JP2011069858A - Color filter substrate, element substrate, method of manufacturing the color filter substrate, liquid crystal display device, and electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device superior in color balance by adjusting a focus length of light that is transmissive through each color material. <P>SOLUTION: A liquid crystal display device includes: a substrate; a plurality of color materials formed on the substrate; and a light focusing part having a convex lens, which focuses light that is transmitted through each color material and where the focal length of the light that is transmitted through each color material is adjusted for each color material. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a color filter substrate, an element substrate, a color filter substrate manufacturing method, an element substrate manufacturing method, a liquid crystal display device, and an electronic apparatus.

  Conventionally, a liquid crystal display device in which a liquid crystal layer is sealed between a color filter substrate and an element substrate is known (for example, see Patent Document 1). The liquid crystal layer is disposed between the pair of polarizing plates. The element substrate can apply an electric field to the liquid crystal layer for each pixel region. The azimuth angle of the liquid crystal molecules in the liquid crystal layer changes depending on whether or not an electric field is applied, and light passing through the liquid crystal layer changes in a polarization state depending on whether or not an electric field is applied. A part of the light passing through the liquid crystal layer is absorbed by the polarizing plate according to the polarization state, and becomes light of a desired gradation. The color filter substrate includes a plurality of color material portions having different wavelengths of light to be transmitted. The color material portion has a one-to-one correspondence with the pixel region. The light emitted from the liquid crystal layer passes through the color material portion, so that a component in a predetermined wavelength band is absorbed and becomes desired color light. In general, the liquid crystal layer is independently controlled in the three red, green, and blue pixel regions, and one pixel of a full-color image is formed by light emitted from the three red, green, and blue pixel regions.

Japanese Patent No. 3261854

  In the liquid crystal display device, the same microlens is formed in each color material portion. However, since the light passing through each color material portion is emitted after the components in the wavelength band of each color material portion are absorbed, if the same microlens is formed in each color material portion, the color material portion having a long absorption light wavelength The focal length of the light transmitted through the color material portion is longer than the focal length of the light transmitted through the color material portion where the absorbed light is short, so that the focal length of the light emitted from each color material portion varies from color material portion to color material portion. There was a problem that the color balance was lost.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A color filter substrate according to this application example includes a substrate, a plurality of color material portions formed on the substrate, and condenses light transmitted through each color material portion, and each color. And a condensing part including a convex lens part in which a focal length of light transmitted through the material part is adjusted for each of the color material parts.

  According to this configuration, it is possible to condense the light transmitted for each color material portion, to align the focal length of the light transmitted through each color material portion, and to improve the color balance.

  Application Example 2 In the color filter substrate according to the application example described above, the convex lens portion of the light collecting portion is formed at a position facing each color material portion and faces in the opposite direction with respect to each color material portion. And having a convex shape.

  According to this structure, it can condense easily by the convex lens part which has a convex shape toward the opposite direction with respect to each color material part.

  Application Example 3 In the color filter substrate according to the application example, the convex lens portion of the light collecting portion is formed at a position facing each color material portion, and has a convex shape toward each color material portion. It is characterized by that.

  According to this configuration, light can be easily condensed by the convex lens portion having a convex shape toward each color material portion.

  Application Example 4 In the color filter substrate according to the application example, the color of the convex lens portion corresponding to the color material portion having a long absorption light wavelength among the plurality of color material portions has a short absorption light wavelength. It is larger than the curvature of the convex lens part corresponding to a material part, It is characterized by the above-mentioned.

  According to this structure, when the curvature of a convex lens part is large, the focal distance of the light to permeate | transmit can be shortened. Further, when the curvature of the convex lens portion is small, the focal distance of the transmitted light can be increased. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion having a relatively long absorption light wavelength and to increase the focal length of the light transmitted through the color material portion having a short absorption light wavelength. Thereby, the focal distance of the light which permeate | transmitted each color material part can be arrange | equalized easily.

  Application Example 5 In the color filter substrate according to the application example, the color material portion corresponding to the color material portion having a long absorption light wavelength among the plurality of color material portions is the color material portion having a short absorption light wavelength. Is formed of a material having a refractive index higher than that of the convex lens portion corresponding to the above.

  According to this configuration, when the refractive index of the convex lens portion is high, the focal length of the transmitted light can be shortened. Moreover, when the refractive index of the convex lens part is low, the focal length of the transmitted light can be increased. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion having a relatively long absorption light wavelength and to increase the focal length of the light transmitted through the color material portion having a short absorption light wavelength. Thereby, the focal distance of the light which permeate | transmitted each color material part can be arrange | equalized easily.

  Application Example 6 In the color filter substrate according to the application example described above, the light collecting portion includes the convex lens portion and the color material portion, and among the plurality of color material portions, the absorption light wavelength is long. The color material part is formed of a material having a higher refractive index than the color material part having a short absorption light wavelength.

  According to this configuration, when light is irradiated from the convex lens part side to the substrate side through the color material part, the focal length of light transmitted through the color material part having a long absorption light wavelength is reduced by the color material part. While shortening, the focal distance of the light which permeate | transmits the color material part with a short absorbed light wavelength can be lengthened, and the focal distance of the light which permeate | transmitted each color material part can be equalized easily.

  Application Example 7 In the color filter substrate according to the application example described above, the light collecting portion includes the convex lens portion and a protective film formed on the convex lens portion, and among the plurality of color material portions, The protective film corresponding to the color material portion having a long absorption light wavelength is formed of a material having a higher refractive index than the protective film corresponding to the color material portion having a short absorption light wavelength.

  According to this configuration, since the protective film is formed on the convex lens portion, the surface of the convex lens portion can be protected. Furthermore, when light is irradiated from the substrate side toward the color material portion side, the protective film shortens the focal length of light transmitted through the color material portion having a long absorption light wavelength and a color with a short absorption light wavelength. The focal length of the light transmitted through the material portion can be increased, and the focal length of the light transmitted through each color material portion can be easily made uniform.

  Application Example 8 An element substrate according to this application example is an element substrate that is formed on a substrate and includes elements for transmitting light to a plurality of color material portions. Condensing the light that has passed through the color material part, and having a light collecting part including a convex lens part in which the focal length of the light that has passed through each of the color material parts is adjusted for each of the color material parts .

  According to this configuration, it is possible to condense the light transmitted for each color material portion, to align the focal length of the light transmitted through each color material portion, and to improve the color balance.

  Application Example 9 In the element substrate according to the application example, the convex lens portion of the light collecting portion is formed at a position facing each color material portion, and has a convex shape toward each color material portion. It is characterized by.

  According to this configuration, light can be easily condensed by the convex lens portion having a convex shape toward each color material portion.

  Application Example 10 The element substrate according to the application example is characterized in that the convex lens portion of the light collecting portion is formed at a position facing each color material portion and has a convex shape toward the substrate. To do.

  According to this structure, it can condense easily by the convex lens part which has a convex shape toward a board | substrate.

  Application Example 11 In the element substrate according to the application example, the color material in which the curvature of the convex lens portion corresponding to the color material portion having a long absorption light wavelength is short among the plurality of color material portions has a short absorption light wavelength. It is larger than the curvature of the convex lens part corresponding to a part.

  According to this structure, when the curvature of a convex lens part is large, the focal distance of the light to permeate | transmit can be shortened. Further, when the curvature of the convex lens portion is small, the focal distance of the transmitted light can be increased. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion having a relatively long absorption light wavelength and to increase the focal length of the light transmitted through the color material portion having a short absorption light wavelength. Thereby, the focal distance of the light which permeate | transmitted each color material part can be arrange | equalized easily.

  Application Example 12 In the element substrate according to the application example described above, the convex lens portion corresponding to the color material portion having a long absorption light wavelength is the color material portion having a short absorption light wavelength among the plurality of color material portions. It is formed of a material having a refractive index higher than that of the corresponding convex lens portion.

  According to this configuration, when the refractive index of the convex lens portion is high, the focal length of the transmitted light can be shortened. Moreover, when the refractive index of the convex lens part is low, the focal length of the transmitted light can be increased. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion having a relatively long absorption light wavelength and to increase the focal length of the light transmitted through the color material portion having a short absorption light wavelength. Thereby, the focal distance of the light which permeate | transmitted each color material part can be arrange | equalized easily.

  Application Example 13 In the color filter substrate manufacturing method or the element substrate manufacturing method according to this application example, the functional liquid containing the material of the convex lens portion is ejected as droplets, and the functional liquid is applied to the substrate. An application step of applying; and a solidification step of solidifying the applied functional liquid to form the convex lens portion.

  According to this configuration, waste of the material for the convex lens portion can be eliminated, and the cost can be reduced.

  Application Example 14 A liquid crystal display device according to this application example includes the above color filter substrate, the above element substrate, the above color filter manufacturing method, the color filter substrate manufactured by the element substrate manufacturing method, or And an element substrate.

  According to this configuration, it is possible to provide a liquid crystal display device with excellent color balance.

  Application Example 15 An electronic apparatus according to this application example includes the above-described liquid crystal display device.

  According to this configuration, an electronic apparatus equipped with a high-quality liquid crystal display device can be provided. In this case, the electronic device corresponds to, for example, a television receiver, a personal computer, a portable electronic device, and other various electronic products equipped with the liquid crystal display device.

The structure of a liquid crystal display device is shown, (a) is a perspective view, (b) The partially enlarged plan view. FIG. 2 is a cross-sectional view of a main part showing a configuration of a liquid crystal display device including a color filter substrate according to the first embodiment. The schematic diagram which shows the condensing state of the liquid crystal display device concerning 1st Embodiment. The perspective view which shows the structure of a droplet discharge apparatus. Sectional drawing which shows the structure of a droplet discharge head. Process drawing which shows the manufacturing method of the color filter substrate concerning 1st Embodiment. Process drawing which shows the manufacturing method of the color filter substrate concerning 1st Embodiment. The perspective view which shows the structure of an electronic device. The principal part sectional view showing the composition of the liquid crystal display device containing the color filter substrate concerning a 2nd embodiment. The principal part sectional view showing the composition of the liquid crystal display device containing the color filter substrate concerning a 3rd embodiment. The principal part sectional view showing the composition of the liquid crystal display device containing the color filter substrate concerning a 4th embodiment. The schematic diagram which shows the condensing state of the liquid crystal display device concerning 4th Embodiment. Process drawing which shows the manufacturing method of the color filter board | substrate concerning 4th Embodiment. Process drawing which shows the manufacturing method of the color filter board | substrate concerning 4th Embodiment. FIG. 10 is an essential part cross-sectional view showing a configuration of a liquid crystal display device including a color filter substrate according to a fifth embodiment. Sectional drawing which shows the principal part which shows the structure of the liquid crystal display device containing the element substrate concerning 6th Embodiment. The schematic diagram which shows the condensing state of the liquid crystal display device concerning 6th Embodiment. Process drawing which shows the manufacturing method of the element substrate concerning 6th Embodiment. The principal part sectional view which shows the structure of the liquid crystal display device containing the color filter board | substrate concerning a modification. The principal part sectional view which shows the structure of the liquid crystal display device containing the color filter board | substrate concerning another modification.

  Hereinafter, first to seventh embodiments will be described with reference to the drawings. Note that in the drawings used for explanation, in order to show characteristic portions in an easy-to-understand manner, dimensions and scales of structures in the drawings may be different from actual structures. In addition, in the embodiment, the same components are illustrated with the same reference numerals, and detailed description thereof may be omitted.

[First Embodiment]
First, the first embodiment will be described. 1A and 1B show a configuration of a liquid crystal display device, where FIG. 1A is a perspective view, and FIG. 1B is an enlarged plan view showing a display area. As shown to Fig.1 (a), the liquid crystal display device 1a is a substantially plate-shaped thing, and has display area A1 on one surface. A plurality of pixel areas P are arranged in a matrix in the display area A1. The outside of the display area A1 is a frame A2. A plurality of scanning lines 10a and a plurality of data lines 10b are provided inside the liquid crystal display device 1a. The plurality of scanning lines 10a are substantially parallel to each other, and the plurality of data lines 10b are also substantially parallel to each other. The scanning line 10a is substantially orthogonal (intersect) with the data line 10b. Each of the regions surrounded by the scanning lines 10a and the data lines 10b is a pixel region P.

  The scanning line 10a and the data line 10b are provided across the display area A1 and the frame A2. In the frame A2, the end of the scanning line 10a is electrically connected to a scanning line driving circuit (not shown) that supplies a scanning signal. In the frame A2, the end of the data line 10b is electrically connected to a data line driving circuit (not shown) that supplies an image signal.

  As shown in FIG. 1B, the display area A1 includes a plurality of pixel areas P. In the present embodiment, a red display pixel region Pr, a green display pixel region Pg, and a blue display pixel region Pb are included. When red light, green light, and blue light are respectively emitted from the pixel areas Pr, Pg, and Pb toward the display side, the red light, the green light, and the blue light are mixed and visually recognized, and one pixel of a full-color image is displayed. Is displayed. Between the pixel regions Pr, Pg, and Pb is a light shielding region D.

  FIG. 2 is a cross-sectional view of a main part of the liquid crystal display device according to the present embodiment. As shown in FIG. 2, the liquid crystal display device 1a includes an element substrate 11, a color filter substrate 12a disposed to face the element substrate 11, and a liquid crystal sandwiched between the element substrate 11 and the color filter substrate 12a. Layer 13 is provided.

  The element substrate 11 is, for example, an active matrix type, and has a transparent substrate 11A made of glass, quartz, plastic, or the like as a base. An element layer 111 is provided on the transparent substrate 11A. The element layer 111 is provided with a thin film transistor (TFT) 112 as an element, various wirings such as the scanning line 10a and the data line 10b shown in FIG. The TFT 112 and various wirings are provided in a portion corresponding to the light shielding region D where light is shielded.

  On the liquid crystal layer 13 side of the element layer 111, island-shaped pixel electrodes 113 are formed for the pixel regions Pr, Pg, and Pb. The pixel electrode 113 has a one-to-one correspondence with the TFT 112 and is electrically connected to the corresponding TFT 112. The TFT 112 switches the image signal based on the scanning signal and supplies the image signal to the pixel electrode 113 at a predetermined timing.

  A passivation film 114 made of an inorganic material such as silicon oxide is provided on the element layer 111 that overlaps the light shielding region D. The passivation film 114 is formed over the periphery of the pixel electrodes 113 so as to cover the periphery of the pixel electrodes 113 in a ring shape. A first alignment film 115 is provided between the pixel electrode 113 and the liquid crystal layer 13. The first alignment film 115 is obtained by performing an alignment process such as a rubbing process on a film made of polyimide or the like, and controls the alignment state of the liquid crystal layer 13 together with a second alignment film 126 described later. Here, the first alignment film 115 and the second alignment film 126 are subjected to alignment treatment so that the liquid crystal layer 13 is nematic twist alignment (TN alignment).

  In the liquid crystal display device 1a of the present embodiment, the side opposite to the liquid crystal layer 13 in the transparent substrate 11A is the incident light incident side. A first polarizing plate 116 is provided on the incident side of the illumination light in the transparent substrate 11A. The first polarizing plate 116 has a characteristic of passing linearly polarized light in a predetermined direction. On the opposite side of the first polarizing plate 116 from the liquid crystal layer 13, an unillustrated illumination device (backlight) including a light source, a light guide plate, and the like is disposed.

  The color filter substrate 12a condenses light that has passed through the transparent substrate 12A as a substrate, a plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and the color material portions 122r, 122g, and 122b. In addition, a condensing unit 130 including a convex lens unit 123 in which a focal length of light transmitted through each of the color material units 122r, 122g, and 122b is adjusted is provided.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  A convex lens portion 123 that constitutes the light collecting portion 130 is provided at a position facing each of the color material portions 122r, 122g, and 122b. In this embodiment, the convex lens part 123 is provided on each color material part 122r, 122g, 122b. The convex lens portion 123 is provided for each of the plurality of pixel regions Pr, Pg, and Pb surrounded by the partition wall 121. The convex lens portion 123 is formed from a resin material having translucency. The convex lens portion 123 has a convex shape toward the opposite direction to the color material portions 122r, 122g, and 122b, that is, toward the liquid crystal layer 13.

  Here, the shape of the convex lens portion 123 according to the present embodiment will be described in detail. As shown in FIG. 2, the convex lens portion 123 has different curvatures of the convex lens portion 123 for each of the color material portions 122r, 122g, and 122b, and has a long absorption light wavelength among the color material portions 122r, 122g, and 122b. The curvature of convex lens part 123a, 123b, 123c corresponding to a color material part is formed so that it may become larger than the curvature of convex lens part 123 corresponding to a color material part with a short absorption light wavelength. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Accordingly, the curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is formed to be larger than the curvature of the convex lens portions 123b and 123c corresponding to the color material portions 122g and 122b having a short absorption light wavelength. ing. In other words, the convex lens portion 123c corresponding to the color material portion 122b, the convex lens portion 123b corresponding to the color material portion 122g, and the convex lens portion 123a corresponding to the color material portion 122r are formed so as to increase in curvature. Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, the refraction of light transmitted through the color material portion 122b having a short absorption light wavelength can be reduced, and the focal length can be increased. The curvatures of the convex lens portions 123a, 123b, and 123c are formed so that the distances that are transmitted through the color material portions 122r, 122g, and 122b are equal from the surface of the transparent substrate 12A. Note that the method of setting the curvature of the convex lens portions 123a, 123b, and 123c corresponding to the color material portions 122r, 122g, and 122b is not particularly limited. For example, the curvature of the convex lens portion 123b corresponding to the color material portion 122g is used as a reference. The curvature of the convex lens portion 123a can be formed so as to be larger than the curvature of the convex lens portion 123b, and the curvature of the convex lens portion 123c can be made smaller than the curvature of the convex lens portion 123b.

  A planarizing layer 124 is provided on the convex lens portions 123a, 123b, and 123c. The planarization layer 124 is made of a light-transmitting resin material or the like. The convex portion on the liquid crystal layer 13 side of the convex lens portion 123 is flattened by the flattening layer 124. In the present embodiment, the surface of the planarizing layer 124 on the liquid crystal layer 13 side is substantially flush with the surface of the partition wall 121 on the liquid crystal layer 13 side.

  A common electrode 125 is provided on the planarization layer 124 and the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate (polarizing layer) 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. The second polarizing plate 127 has a characteristic of passing linearly polarized light. Here, the transmission axis of the second polarizing plate 127 forms an angle of approximately 90 ° with respect to the transmission axis of the first polarizing plate 116. The common electrode 125, the second alignment film 126, and the second polarizing plate 127 are all provided over the entire surface so as to correspond to the pixel regions Pr, Pg, and Pb.

  The liquid crystal layer 13 is made of a liquid crystal material having birefringence. Here, the alignment state of the liquid crystal layer 13 is TN alignment, and the liquid crystal layer 13 exhibits birefringence when no electric field is applied. When an electric field is applied to the liquid crystal layer 13, the director direction of the liquid crystal molecules becomes substantially parallel to the electric field direction, and the liquid crystal layer 13 does not exhibit birefringence.

  Next, the condensing state of the liquid crystal display device 1a of this embodiment will be described. FIG. 3 is a schematic diagram illustrating a light collection state of the liquid crystal display device. In the liquid crystal display device 1 a, the illumination light passes through the first polarizing plate 116 and becomes linearly polarized light (referred to as first linearly polarized light) and enters the liquid crystal layer 13. When attention is paid to the pixel region Pr, the liquid crystal layer 13 is in a state in which no electric field is applied in a state where no image signal is supplied to the pixel electrode 113, and thus exhibits birefringence. The light incident on the liquid crystal layer 13 in the state where no electric field is applied becomes phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, and enters the convex lens portion 123a. The light is refracted by the convex surface of the convex lens portion 123a, and the light transmitted through the convex lens portion 123a enters the color material portion 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the transmission axis of the second polarizing plate 127, passes through the second polarizing plate 127, and the pixel region Pr becomes bright display (red). The light transmitted through the second polarizing plate 127 is condensed at the condensing point CP.

  The condensing state of the pixel regions Pg and Pb is the same as that of the pixel region Pr. However, the curvatures of the convex lens portions 123a, 123b, and 123c correspond to the absorption light wavelengths of the color material portions 122r, 122g, and 122b. Therefore, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively large curvature, and the light transmitted through the color material portion 122b having a short absorption light wavelength is Since the refraction is suppressed by the convex lens portion 123c having a relatively small curvature, even when the absorption light wavelength is different, for example, from the transparent substrate 12A to the condensing point of the light transmitted through the color material portions 122r, 122g, and 122b. Can be made substantially equal.

  In the above embodiment, the illumination light is applied from the element substrate 11 side, but the present invention is not limited to this. For example, illumination light may be applied from the color filter substrate 12a side toward the element substrate 11 side. Even in this case, the light incident on the color filter substrate 12a can be refracted and condensed by the convex lens portions 123a, 123b, and 123c. And the light which permeate | transmits the color material part 122r with a long absorption light wavelength is largely refracted by the convex lens part 123a with a relatively large curvature, and the light which permeate | transmits the color material part 122b with a short absorption light wavelength is a relative curvature. Since the refraction is suppressed by the small convex lens portion 123c, the distance to the condensing point of the light transmitted through the element substrate 11 can be made substantially equal even when the absorption light wavelength is different.

  Further, in a state where an image signal is supplied to the pixel electrode 113, the liquid crystal layer 13 is in an electric field applied state and does not exhibit birefringence. The first linearly polarized light incident on the liquid crystal layer 13 in the electric field applied state enters the convex lens portion 123 without changing the polarization state. The light incident on the convex lens part 123 is refracted by the convex surface of the convex lens part 123a and enters the color material part 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the absorption axis of the second polarizing plate 127 and is absorbed by the second polarizing plate 127. Thereby, the pixel region Pr is darkly displayed (black). The pixel areas Pg and Pb are the same as the pixel area Pr.

(Color filter substrate manufacturing method)
Next, a method for manufacturing a color filter substrate will be described. In manufacturing a color filter substrate, a droplet discharge device that discharges a functional liquid as droplets to form a pattern is used. Therefore, prior to the description of the method for manufacturing a color filter substrate, the droplet discharge device will be described first. .

  FIG. 4 is a perspective view showing the configuration of the droplet discharge device. The droplet discharge device IJ includes a droplet discharge head 1001, an X-axis direction drive shaft 1004, a Y-axis direction guide shaft 1005, a control device CONT, a stage 1007, a cleaning mechanism 1008, a base 1009, and a heater. 1015.

  The stage 1007 supports the workpiece W to which the functional liquid is applied, and includes a fixing mechanism (not shown) that fixes the workpiece W to a reference position.

  The droplet discharge head 1001 is a multi-nozzle type droplet discharge head including a plurality of discharge nozzles, and the longitudinal direction and the X-axis direction are made to coincide. The plurality of discharge nozzles are provided on the lower surface of the droplet discharge head 1001 at regular intervals. From the discharge nozzle of the droplet discharge head 1001, the functional liquid is discharged as droplets onto the work W supported by the stage 1007, and the functional liquid is applied onto the work W.

  An X-axis direction drive motor 1002 is connected to the X-axis direction drive shaft 1004. The X-axis direction drive motor 1002 is a stepping motor or the like, and rotates the X-axis direction drive shaft 1004 when a drive signal in the X-axis direction is supplied from the control device CONT. When the X-axis direction drive shaft 1004 rotates, the droplet discharge head 1001 moves in the X-axis direction.

  The Y-axis direction guide shaft 1005 is fixed so as not to move with respect to the base 1009. The stage 1007 includes a Y-axis direction drive motor 1003. The Y-axis direction drive motor 1003 is a stepping motor or the like, and moves the stage 1007 in the Y-axis direction when a drive signal in the Y-axis direction is supplied from the control device CONT.

  The control device CONT supplies a droplet discharge control voltage to the droplet discharge head 1001. In addition, a driving pulse signal for controlling movement of the droplet discharge head 1001 in the X-axis direction is supplied to the X-axis direction driving motor 1002, and a driving pulse signal for controlling movement of the stage 1007 in the Y-axis direction is supplied to the Y-axis direction driving motor 1003. Supply.

  The cleaning mechanism 1008 is for cleaning the droplet discharge head 1001. The cleaning mechanism 1008 includes a Y-axis direction drive motor (not shown). The cleaning mechanism moves along the Y-axis direction guide shaft 1005 by driving the Y-axis direction drive motor. The movement of the cleaning mechanism 1008 is also controlled by the control device CONT.

  Here, the heater 1015 is means for heat-treating the workpiece W by lamp annealing, and performs evaporation and drying of the solvent contained in the functional liquid disposed on the workpiece W. The heater 1015 is also turned on and off by the control device CONT.

  The droplet discharge device IJ is arranged in the X-axis direction on the lower surface of the droplet discharge head 1001 with respect to the workpiece W while relatively scanning the droplet discharge head 1001 and the stage 1007 that supports the workpiece W. Droplets are ejected from a plurality of ejection nozzles.

  FIG. 5 is a diagram for explaining the principle of discharging the functional liquid by the piezo method. In FIG. 5, a piezo element 1022 is installed adjacent to a liquid chamber 1021 that contains a functional liquid. The functional liquid is supplied to the liquid chamber 1021 via a liquid material supply system 1023 including a material tank that stores the functional liquid. The piezo element 1022 is connected to a drive circuit 1024, and a voltage is applied to the piezo element 1022 via the drive circuit 1024 to deform the piezo element 1022, whereby the liquid chamber 1021 is deformed and functions from the discharge nozzle 1025. Liquid is discharged. In this case, the amount of distortion of the piezo element 1022 is controlled by changing the value of the applied voltage. Further, the strain rate of the piezo element 1022 is controlled by changing the frequency of the applied voltage. Since the droplet discharge by the piezo method does not apply heat to the material, it has an advantage of hardly affecting the composition of the material.

  Returning to the description of the manufacturing method of the color filter substrate, description will be made with reference to the drawings. 6 and 7 are process diagrams showing a method for manufacturing a color filter substrate.

  First, as shown in FIG. 6A, the partition 121 is formed on the transparent substrate 12A. Specifically, for example, a resin material is formed on the transparent substrate 12A, and the partition 121 is formed by opening portions that overlap the pixel regions Pr, Pg, and Pb in the film.

  Next, as shown in FIG. 6B, the functional liquid containing the materials of the color material portions 122r, 122g, and 122b is applied from the droplet discharge head 1001 of the droplet discharge apparatus IJ toward the region partitioned by the partition 121. The droplets 51r, 52g, and 53b are ejected, and the functional liquids 122r ′, 122g ′, and 122b ′ are attached to the portions surrounded by the partition wall 121.

  Thereafter, the adhered functional liquids 122r ', 122g', 122b 'are solidified by drying, baking, or the like to form the color material parts 122r, 122g, 122b as shown in FIG. 6C.

  Next, as shown in FIG. 7A, the functional liquid containing the material of the convex lens portion 123 is discharged as droplets 57 from the droplet discharge head 1001 of the droplet discharge apparatus IJ toward the respective color material portions 122r, 122g, 122b. Then, the functional liquids 123a ′, 123b ′, 123c ′ are applied on the color material portions 122r, 122g, 122b (application process).

  In the application step, the discharge amount (application amount) of the droplets 57 for the color material portions 122r, 122g, and 122b is adjusted. In the present embodiment, the droplets 57 are ejected so that the application amount increases in the order of the color material portion 122b to which the functional liquid 123 'is applied, the color material portion 122g, and the color material portion 122r. Thereby, the curvatures of the functional liquids 123a ', 123b', 123c 'in the liquid state can be increased in the order of the color material part 122b, the color material part 122g, and the color material part 122r.

  Then, the applied functional liquids 123a ', 123b', 123c 'are solidified by drying and baking (solidification step). Accordingly, as shown in FIG. 7B, convex lens portions 123a, 123b, and 123c having different curvatures are formed corresponding to the color material portions 122r, 122g, and 122b. That is, the curvature increases in the order of the convex lens portion 123c, the convex lens portion 123b, and the convex lens portion 123a.

  Next, as shown in FIG. 7C, a planarizing layer 124 is formed on each convex lens portion 123a, 123b, 123c. For example, after the liquid forming material of the planarizing layer 124 is applied by a coating method such as a spin coating method, the applied forming material is solidified to form the planarizing layer 124. Then, a transparent conductive material such as ITO is formed over almost the entire area of the transparent substrate 12A over the pixel regions Pr, Pg, and Pb to form the common electrode 125. Then, the second alignment film 126 is formed on the common electrode 125. Thereby, the color filter substrate 12a excluding the second polarizing plate 127 is formed.

  As a method for manufacturing the liquid crystal display device 1a, the element substrate 11 is formed separately from the formation of the color filter substrate 12a. Specifically, the TFT 112, various wirings, various passivation films, and the like are formed on the transparent substrate 11A to form the element layer 111. Then, island-shaped pixel electrodes 113 are formed on the element layer 111. Then, a passivation film 114 is formed continuously between the peripheral edge of the pixel electrode 113 and the pixel electrode 113. For example, an inorganic material (for example, silicon oxide) is formed over almost the entire area of the transparent substrate 11A. Then, the passivation film 114 is obtained by patterning this film to expose portions (center portions) overlapping the pixel regions Pr, Pg, Pb in the pixel electrode 113. Then, a first alignment film 115 is formed over almost the entire area of the transparent substrate 11A so as to cover the pixel electrode 113 and the passivation film 114. The element substrate 11 can be formed by appropriately using known forming materials and forming methods.

  Next, the element substrate 11 and the color filter substrate 12a are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11 and the color filter substrate 12a, the peripheral portion of the element substrate 11 and the peripheral portion of the color filter substrate 12a are bonded together, and a liquid crystal is provided between the element substrate 11 and the color filter substrate 12a. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1a is obtained by sticking the first polarizing plate 116 outside the transparent substrate 11A and sticking the second polarizing plate 127 outside the transparent substrate 12A.

(Configuration of electronic equipment)
Next, the configuration of the electronic device will be described. In the present embodiment, the configuration of a mobile personal computer as an electronic device will be described. FIG. 8 is a perspective view showing a configuration of a mobile personal computer as an electronic apparatus. A mobile personal computer 1100 includes a liquid crystal display device 1a, a main body 1103 having a keyboard 1102, and the like. In addition, said electronic device is an example of the electronic device of this invention, Comprising: The technical scope of this invention is not limited. For example, the liquid crystal display device 1a can be applied to a mobile phone, a portable audio device, a PDA (Personal Digital Assistant), and the like as other electronic devices.

  Therefore, according to the first embodiment, there are the following effects.

  (1) Convex lens portions 123a, 123b, and 123c having convex shapes in the opposite direction with respect to the color material portions 122r, 122g, and 122b were formed. The curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength among the plurality of color material portions 122r, 122g, and 122b corresponds to the other color material portions 122g and 122b having a short absorption light wavelength. It formed so that it might become larger than the curvature of the convex lens parts 123b and 123c. Specifically, the curvature of the convex lens portion 123 corresponding to each of the color material portions 122r, 122g, and 122b is increased in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1a can be made uniform. Thereby, a color balance can be improved.

  (2) Since the functional liquid containing the material of the color material part 122 and the functional liquid containing the material of the convex lens part 123 are ejected as droplets in the opening of the partition wall 121 using the liquid droplet ejection method, the color material part The relative positions of 122r, 122g, and 122b and the convex lens portions 123a, 123b, and 123c can be controlled with high accuracy. Therefore, the light collection accuracy is improved, and a high-quality color filter substrate 12a can be manufactured.

[Second Embodiment]
Next, a second embodiment will be described. Since the basic configuration of the liquid crystal display device and the configuration of the electronic device are the same as those in the first embodiment, the description thereof is omitted (see FIGS. 1 and 8). Moreover, the same code | symbol as 1st Embodiment is attached | subjected about the member similar to 1st Embodiment.

  FIG. 9 is a cross-sectional view of a main part of the liquid crystal display device according to the present embodiment. As shown in FIG. 9, the liquid crystal display device 1b includes an element substrate 11, a color filter substrate 12b disposed to face the element substrate 11, and a liquid crystal layer 13 sandwiched between the element substrate 11 and the color filter substrate 12b. It has. Since the configuration of the element substrate 11 and the configuration of the liquid crystal layer 13 and the like are the same as those in the first embodiment, the description thereof will be omitted, and a description will be mainly given of a portion different from the configuration of the first embodiment, that is, the configuration of the color filter substrate 12b. To do.

  The color filter substrate 12b condenses light that has passed through the transparent substrate 12A as a substrate, a plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and the color material portions 122r, 122g, and 122b. In addition, a condensing unit 130 including a convex lens unit 123 in which a focal length of light transmitted through each of the color material units 122r, 122g, and 122b is adjusted is provided.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  Convex lens portions 123a, 123b, and 123c constituting the light condensing unit 130 are provided at positions facing the respective color material portions 122r, 122g, and 122b. In this embodiment, the convex lens part 123 is provided on each color material part 122r, 122g, 122b. The convex lens portion 123 is provided for each of the plurality of pixel regions Pr, Pg, and Pb surrounded by the partition wall 121. The convex lens portion 123 is formed from a resin material having translucency. The convex lens portion 123 has a convex shape toward the opposite direction to the color material portions 122r, 122g, and 122b, that is, toward the liquid crystal layer 13. In this embodiment, the curvature of each convex lens part 123a, 123b, 123c is formed substantially the same.

  In the color filter substrate 12b according to the present embodiment, among the plurality of color material portions 122r, 122g, and 122b, the convex lens portion 123a corresponding to the color material portion having the long absorption light wavelength has another color having the short absorption light wavelength. It is made of a material having a higher refractive index than the convex lens portions 123b and 123c corresponding to the material portions. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Accordingly, the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is formed of a material having a higher refractive index than the convex lens portions 123b and 123c corresponding to the color material portions 122g and 122b having a short absorption light wavelength. . That is, the convex lens portion 123c corresponding to the color material portion 122b, the convex lens portion 123b corresponding to the color material portion 122g, and the convex lens portion 123a corresponding to the color material portion 122r are formed of materials having a high refractive index in this order. Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, refraction of light transmitted through the color material portion 122b having a short absorption light wavelength is suppressed, and the focal length can be increased. The refractive indexes of the convex lens portions 123a, 123b, and 123c are adjusted so that the distances that are transmitted through and condensed through the color material portions 122r, 122g, and 122b are equal from the surface of the transparent substrate 12A. Note that the method of setting the refractive index of the convex lens portions 123a, 123b, 123c corresponding to the color material portions 122r, 122g, 122b is not particularly limited. For example, the refractive index of the convex lens portion 123b corresponding to the color material portion 122g is used as a reference. As described above, the convex lens portion 123a can be formed so that the refractive index is larger than the refractive index of the convex lens portion 123b, and the curvature of the convex lens portion 123c is smaller than the refractive index of the convex lens portion 123b.

  In this embodiment, since the refractive indexes of the color material portions 122r, 122g, and 122b are formed to be substantially the same, the color filter substrate 12b absorbs light among the plurality of color material portions 122r, 122g, and 122b. The difference between the refractive index of the convex lens portion 123 corresponding to the color material portion having a long wavelength and the refractive index of the color material portion is the refractive index of the convex lens portion 123 corresponding to the color material portion having a short absorption light wavelength and the refraction of the color material portion. It can be said that it is larger than the difference from the rate. Specifically, the difference in refractive index between the color material portion 122r and the convex lens portion 123a is the largest, and then the difference in refractive index between the color material portion 122g and the convex lens portion 123b is large, so that the color material portion 122b and the convex lens portion 123c. And the refractive index difference is the smallest.

  A planarizing layer 124 is provided on the convex lens portions 123a, 123b, and 123c. A common electrode 125 is provided on the planarization layer 124 and the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. The details of the planarization layer 124, the common electrode 125, and the second polarizing plate (polarizing layer) 127 are the same as those in the first embodiment, and thus the description thereof is omitted.

  Next, the condensing state of the liquid crystal display device 1b of this embodiment will be described with reference to FIG. In the liquid crystal display device 1 b, the illumination light passes through the first polarizing plate 116 and becomes linearly polarized light (referred to as first linearly polarized light) and enters the liquid crystal layer 13. When attention is paid to the pixel region Pr, the liquid crystal layer 13 is in a state in which no electric field is applied in a state where no image signal is supplied to the pixel electrode 113, and thus exhibits birefringence. The light incident on the liquid crystal layer 13 in the state where no electric field is applied becomes phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, and enters the convex lens portion 123a. The light is refracted by the surface of the convex lens portion 123a, and the light transmitted through the convex lens portion 123a enters the color material portion 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the transmission axis of the second polarizing plate 127, passes through the second polarizing plate 127, and the pixel region Pr becomes bright display (red). The light transmitted through the second polarizing plate 127 is condensed at the condensing point CP.

  The condensing state of the pixel regions Pg and Pb is the same as that of the pixel region Pr, but the convex lens portions 123a, 123b, and 123c are made of materials corresponding to the absorption light wavelengths in the order of the color material portions 122b, 122g, and 122r. Therefore, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively high refractive index, and the color material portion 122b having a short absorption light wavelength. Since the light transmitted through the light is suppressed by the convex lens portion 123c having a relatively low refractive index, for example, even if the absorption light wavelength is different, the light passes through the color material portions 122r, 122g, and 122b from the transparent substrate 12A. The distance to the light condensing point can be made substantially equal.

  In the above embodiment, the illumination light is applied from the element substrate 11 side, but the present invention is not limited to this. For example, illumination light may be applied from the color filter substrate 12b side toward the element substrate 11 side. Even in this case, the light incident on the color filter substrate 12b can be refracted and condensed by the convex lens portions 123a, 123b, and 123c. The light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively high refractive index, and the light transmitted through the color material portion 122b having a short absorption light wavelength is relatively Since the refraction is suppressed by the convex lens portion 123c having a low refractive index, the distance to the condensing point of the light transmitted through the element substrate 11 can be made substantially equal even when the absorption light wavelength is different.

  Since the state in which the image signal is supplied to the pixel electrode 113 is the same as that in the first embodiment, the description thereof is omitted.

(Color filter substrate manufacturing method)
Next, a method for manufacturing a color filter substrate will be described. The configuration of the droplet discharge device IJ used for manufacturing the color filter substrate is the same as that of the first embodiment, and thus the description thereof is omitted.

  First, the partition 121 is formed on the transparent substrate 12A. Specifically, for example, a resin material is formed on the transparent substrate 12A, and portions that overlap the pixel regions Pr, Pg, and Pb are opened in the film to form the partition wall 121 (see FIG. 6A).

  Next, the functional liquid containing the materials of the color material portions 122r, 122g, and 122b is ejected as droplets 51r, 52g, and 53b from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the region partitioned by the partition 121. Functional liquids 122r ′, 122g ′, and 122b ′ are attached to the portion surrounded by the partition wall 121 (see FIG. 6B).

  Thereafter, the adhered functional liquids 122r ', 122g', 122b 'are solidified by drying, baking, or the like to form the color material parts 122r, 122g, 122b (see FIG. 6C).

  Next, the functional liquid containing the material of the convex lens portion 123 is ejected as droplets 57 from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the respective color material portions 122r, 122g, 122b, and the respective color material portions 122r, 122g, 122b. The functional liquids 123a ′, 123b ′, and 123c ′ are applied thereon. In the coating step, functional liquids having different refractive indexes are discharged as droplets to the color material portions 122r, 122g, and 122b. In the present embodiment, a functional liquid containing a material having a high refractive index is ejected as droplets in the order of the color material portions 122b, 122g, and 122r (application process).

  Then, the applied functional liquids 123a ', 123b', 123c 'are solidified by drying and baking (solidification step). Thereby, convex lens parts 123a, 123b, and 123c having different refractive indexes are formed corresponding to the convexes of the respective color material parts 122r, 122g, and 122b.

  Next, a planarizing layer 124 is formed on each convex lens portion 123a, 123b, 123c. Then, a transparent conductive material such as ITO is formed over almost the entire area of the transparent substrate 12A over the pixel regions Pr, Pg, and Pb to form the common electrode 125. Then, the second alignment film 126 is formed on the common electrode 125. Thereby, the color filter substrate 12b excluding the second polarizing plate 127 is formed.

  Further, as a manufacturing method of the liquid crystal display device 1b, the element substrate 11 is formed separately from the formation of the color filter substrate 12b in the same manner as in the first embodiment. Next, the element substrate 11 and the color filter substrate 12b are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11 and the color filter substrate 12b, the peripheral portion of the element substrate 11 and the peripheral portion of the color filter substrate 12b are bonded together, and a liquid crystal is provided between the element substrate 11 and the color filter substrate 12b. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1b is obtained by sticking the first polarizing plate 116 outside the transparent substrate 11A and sticking the second polarizing plate 127 outside the transparent substrate 12A.

  Therefore, according to said 2nd Embodiment, in addition to the effect of 1st Embodiment, there exists an effect shown below.

  (1) Among the plurality of color material parts 122r, 122g, 122b, the convex lens part 123a corresponding to the color material part 122r having a long absorption light wavelength is a convex lens corresponding to the other color material parts 122g, 122b having a short absorption light wavelength. It was formed of a material having a higher refractive index than the parts 123b and 123c. Specifically, the refractive index of the convex lens portion 123 corresponding to each of the color material portions 122r, 122g, and 122b is increased in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1b can be made uniform. Thereby, a color balance can be improved.

  (2) Since the shape of each convex lens part 123a, 123b, 123c can be made the same, the color filter substrate 12b can be formed easily.

[Third Embodiment]
Next, a third embodiment will be described. Since the basic configuration of the liquid crystal display device and the configuration of the electronic device are the same as those in the first embodiment, the description thereof is omitted (see FIGS. 1 and 8). Moreover, the same code | symbol as 1st Embodiment is attached | subjected about the member similar to 1st Embodiment.

  FIG. 10 is a cross-sectional view of a main part of the liquid crystal display device according to this embodiment. As shown in FIG. 10, the liquid crystal display device 1c includes an element substrate 11, a color filter substrate 12c disposed opposite to the element substrate 11, and a liquid crystal layer 13 sandwiched between the element substrate 11 and the color filter substrate 12c. It has. Since the configuration of the element substrate 11 and the configuration of the liquid crystal layer 13 and the like are the same as those in the first embodiment, the description thereof will be omitted, and the difference from the configuration of the first embodiment, that is, the configuration of the color filter substrate 12c will be mainly described. To do.

  The color filter substrate 12c condenses light transmitted through the transparent substrate 12A as a substrate, a plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and the color material portions 122r, 122g, and 122b. In addition, a condensing unit 130 including a convex lens unit in which the focal length of the light transmitted through the color material units 122r, 122g, and 122b is adjusted is provided.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  Convex lens portions 123 constituting the condensing portion 130 and flattening layers 124a, 124b, and 124c as protective films formed on the respective convex lens portions 123 are disposed at positions facing the respective color material portions 122r, 122g, and 122b. Have. In this embodiment, the convex lens part 123 is provided on each color material part 122r, 122g, 122b. The convex lens portion 123 is provided for each of the plurality of pixel regions Pr, Pg, and Pb surrounded by the partition wall 121. The convex lens portion 123 is formed from a resin material having translucency. The convex lens portion 123 has a convex shape toward the opposite direction to the color material portions 122r, 122g, and 122b, that is, toward the liquid crystal layer 13. In this embodiment, the curvature of each convex lens portion 123 is substantially the same, and each convex lens portion 123 is formed of a material having a similar refractive index.

  In the color filter substrate 12c according to the present embodiment, the refractive index of the convex lens portion 123 corresponding to the color material portion having a long absorption light wavelength and the refraction of the planarizing layer 124 among the color material portions 122r, 122g, and 122b. The difference between the refractive index and the refractive index of the convex lens portion 123 corresponding to the color material portion having a short absorption light wavelength and the refractive index of the planarizing layer 124 is formed. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Therefore, the difference between the refractive index of the convex lens portion 123 corresponding to the color material portion 122r having a long absorption light wavelength and the refractive index of the planarizing layer 124a is the respective convex lens portion corresponding to the color material portions 122g and 122b having a short absorption light wavelength. It is formed to be larger than the difference between the refractive index of 123 and the refractive indexes of the planarization layers 124b and 124c. That is, the convex lens part 123 and the planarization layer 124c corresponding to the color material part 122b, the convex lens part 123 and the planarization layer 124b corresponding to the color material part 122g, and the convex lens part 123 and the planarization layer 124a corresponding to the color material part 122r. The difference in refractive index increases in order. In the present embodiment, each convex lens portion 123 is formed of a material having the same refractive index. For this reason, the refractive indexes of the materials of the planarization layers 124a, 124b, and 124c are made different, and the planarization layer 124a, the planarization layer 124b, and the planarization layer 124c are formed of materials having a higher refractive index in this order.

  Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, the refraction of light transmitted through the color material portion 122b having a short absorption light wavelength can be reduced, and the focal length can be increased. The distances collected through the color material portions 122r, 122g, and 122b are adjusted by the difference in refractive index between the planarization layers 124a, 124b, and 124c so that the distances from the surfaces of the transparent substrate 12A are equal. . In addition, the setting method of the condensing part 130 corresponding to each color material part 122r, 122g, 122b is not specifically limited, For example, the planarization layer is based on the refractive index of the planarization layer 124b corresponding to the color material part 122g. The refractive index of 124a can be smaller than the refractive index of the planarization layer 124b, and the refractive index of the planarization layer 124c can be larger than the refractive index of the planarization layer 124b.

  A common electrode 125 is provided on the planarization layers 124 a, 124 b, 124 c and the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. Note that the details of the common electrode 125 and the second polarizing plate (polarizing layer) 127 are the same as those in the first embodiment, and a description thereof will be omitted.

  Next, the condensing state of the liquid crystal display device 1c of this embodiment will be described with reference to FIG. In the present embodiment, a case where illumination light is applied toward the element substrate 11 from the color filter substrate 12c side will be described. In the liquid crystal display device 1c, the illumination light passes through the second polarizing plate 127 and becomes linearly polarized light, and the light transmitted through the transparent substrate 12A enters the color material portion 122. Here, focusing on the pixel region Pr, light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r is refracted at the joint surface between the convex lens portion 123 and the flattening layer 124a, and the light transmitted through the flattening layer 124a is incident on the liquid crystal layer 13. Here, in a state where an image signal is not supplied to the pixel electrode 113, the liquid crystal layer 13 is in a state where no electric field is applied, and exhibits birefringence. The light incident on the liquid crystal layer 13 in the state where no electric field is applied becomes phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, enters the element substrate 11, and the vibration direction of the first polarizing plate 116. The optical axis substantially coincides with the transmission axis, passes through the first polarizing plate 116, the pixel region Pr becomes bright display (red), and the light transmitted through the first polarizing plate 116 is condensed at the condensing point CP. .

  The condensing state of the pixel regions Pg and Pb is the same as that of the pixel region Pr. However, since the refractive index of the material is set higher in the order of the flattening layers 124a, 124b, and 124c, the absorption light wavelength is long. The light transmitted through the color material portion 122r is largely refracted in the flattening layer 124a having a relatively low refractive index, and the light transmitted through the color material portion 122b having a short absorption light wavelength is flattened with a relatively high refractive index. Since refraction is suppressed in the layer 124c, even when the absorption light wavelength is different, for example, the distances from the element substrate 11 to the condensing points of the light transmitted through the color material portions 122r, 122g, and 122b are made substantially equal. Can do.

  Since the state in which the image signal is supplied to the pixel electrode 113 is the same as that in the first embodiment, the description thereof is omitted.

(Color filter substrate manufacturing method)
Next, a method for manufacturing a color filter substrate will be described. The configuration of the droplet discharge device IJ used for manufacturing the color filter substrate is the same as that of the first embodiment, and thus the description thereof is omitted.

  First, the partition 121 is formed on the transparent substrate 12A. Specifically, for example, a resin material is formed on the transparent substrate 12A, and portions that overlap the pixel regions Pr, Pg, and Pb are opened in the film to form the partition wall 121 (see FIG. 6A).

  Next, the functional liquid containing the materials of the color material portions 122r, 122g, and 122b is ejected as droplets 51r, 52g, and 53b from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the region partitioned by the partition 121. Functional liquids 122r ′, 122g ′, and 122b ′ are attached to the portion surrounded by the partition wall 121 (see FIG. 6B).

  Thereafter, the adhered functional liquids 122r ', 122g', 122b 'are solidified by drying, baking, or the like to form the color material parts 122r, 122g, 122b (see FIG. 6C).

  Next, the functional liquid containing the material of the convex lens portion 123 is ejected as droplets 57 from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the respective color material portions 122r, 122g, 122b, and the respective color material portions 122r, 122g, 122b. The functional liquid 123 ′ is applied on the top (application process). In the present embodiment, a functional liquid containing a material having the same refractive index is ejected as droplets to the color material portions 122b, 122g, and 122r.

  Then, the applied functional liquid 123 ′ is solidified by drying and baking (solidification step). Thereby, the convex lens part 123 is formed.

  Next, planarization layers 124a, 124b, and 124c are formed on each convex lens portion 123. In this embodiment, the planarization layer 124a, the planarization layer 124b, and the planarization layer 124c are formed of materials having a high refractive index in this order.

  Then, a transparent conductive material such as ITO is formed over almost the entire area of the transparent substrate 12A over the pixel regions Pr, Pg, and Pb to form the common electrode 125. Then, the second alignment film 126 is formed on the common electrode 125. Thereby, the color filter substrate 12c excluding the second polarizing plate 127 is formed.

  Further, as a manufacturing method of the liquid crystal display device 1c, the element substrate 11 is formed separately from the formation of the color filter substrate 12c in the same manner as in the first embodiment. Next, the element substrate 11 and the color filter substrate 12c are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11 and the color filter substrate 12c, the peripheral portion of the element substrate 11 and the peripheral portion of the color filter substrate 12c are bonded together, and a liquid crystal is provided between the element substrate 11 and the color filter substrate 12c. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1c is obtained by sticking the first polarizing plate 116 outside the transparent substrate 11A and sticking the second polarizing plate 127 outside the transparent substrate 12A.

  Therefore, according to the third embodiment, in addition to the effects of the first and second embodiments, there are the following effects.

  (1) Among the plurality of color material portions 122r, 122g, and 122b, the planarization layer 124a corresponding to the color material portion 122r having a long absorption light wavelength corresponds to the other color material portions 122g and 122b having a short absorption light wavelength. The planarization layers 124b and 124c were formed of a material having a higher refractive index. Specifically, the refractive indexes of the planarizing layers 124c, 124b, and 124a corresponding to the color material portion 122b, the color material portion 122g, and the color material portion 122r, respectively, were increased. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1c can be made uniform. Thereby, a color balance can be improved.

  (2) By making the refractive indexes of the planarizing layers 124a, 124b, and 124c different in correspondence with the plurality of color material portions 122r, 122g, and 122b, in particular, the element substrate 11 is changed from the color filter substrate 12c side. The light condensing point CP can be easily made to have the same height when irradiated with light.

[Fourth Embodiment]
Next, a fourth embodiment will be described. Since the basic configuration of the liquid crystal display device and the configuration of the electronic device are the same as those in the first embodiment, the description thereof is omitted (see FIGS. 1 and 8). Moreover, the same code | symbol as 1st Embodiment is attached | subjected about the member similar to 1st Embodiment.

  FIG. 11 is a cross-sectional view of a main part of the liquid crystal display device according to the present embodiment. As shown in FIG. 11, the liquid crystal display device 1d includes an element substrate 11, a color filter substrate 12d arranged to face the element substrate 11, and a liquid crystal layer 13 sandwiched between the element substrate 11 and the color filter substrate 12d. It has. Since the configuration of the element substrate 11 and the configuration of the liquid crystal layer 13 and the like are the same as those in the first embodiment, the description thereof will be omitted, and the difference from the configuration of the first embodiment, that is, the configuration of the color filter substrate 12d will be mainly described. To do.

  The color filter substrate 12d condenses the light transmitted through the transparent substrate 12A as a substrate, the plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and the color material portions 122r, 122g, and 122b. In addition, a condensing unit 130 including a convex lens unit in which the focal length of the light transmitted through the color material units 122r, 122g, and 122b is adjusted is provided.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  Convex lens portions 123a, 123b, and 123c constituting the light condensing unit 130 are provided at positions facing the respective color material portions 122r, 122g, and 122b. In this embodiment, the convex lens part 123 is provided on each color material part 122r, 122g, 122b. The convex lens portion 123 is provided for each of the plurality of pixel regions Pr, Pg, and Pb surrounded by the partition wall 121. The convex lens portion 123 is formed from a resin material having translucency. And the convex lens part 123 has convex shape toward each color material part 122r, 122g, 122b.

  Here, the shape of the convex lens portion 123 according to the present embodiment will be described in detail. As shown in FIG. 11, the convex lens portion 123 has different curvatures of the convex lens portion 123 for each of the color material portions 122r, 122g, and 122b, and has a longer absorption light wavelength among the plurality of color material portions 122r, 122g, and 122b. The curvature of the convex lens part 123 corresponding to the color material part is formed to be larger than the curvature of the convex lens part 123 corresponding to the color material part having a short absorption light wavelength. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Accordingly, the curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is formed to be larger than the curvature of the convex lens portions 123b and 123c corresponding to the color material portions 122g and 122b having a short absorption light wavelength. ing. In other words, the convex lens portion 123c corresponding to the color material portion 122b, the convex lens portion 123b corresponding to the color material portion 122g, and the convex lens portion 123a corresponding to the color material portion 122r are formed so as to increase in curvature. Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, the refraction of light transmitted through the color material portion 122b having a short absorption light wavelength can be reduced, and the focal length can be increased. The curvatures of the convex lens portions 123a, 123b, and 123c are formed so that the distances that are transmitted through the color material portions 122r, 122g, and 122b are equal from the surface of the transparent substrate 12A. Note that the method of setting the curvature of the convex lens portions 123a, 123b, and 123c corresponding to the color material portions 122r, 122g, and 122b is not particularly limited. For example, the curvature of the convex lens portion 123b corresponding to the color material portion 122g is used as a reference. The curvature of the convex lens portion 123a can be formed so as to be larger than the curvature of the convex lens portion 123b, and the curvature of the convex lens portion 123c can be made smaller than the curvature of the convex lens portion 123b. In the present embodiment, the surface of the convex lens portion 123 on the liquid crystal layer 13 side is substantially flush with the surface of the partition wall 121 on the liquid crystal layer 13 side.

  A common electrode 125 is provided on the convex lens portion 123 and the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate (polarizing layer) 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. The common electrode 125 and the second polarizing plate (polarizing layer) 127 are the same as those in the first embodiment, and thus the description thereof is omitted.

  Next, the condensing state of the liquid crystal display device 1d will be described. FIG. 12 is a schematic diagram schematically showing a light collection state of the liquid crystal display device. In the liquid crystal display device 1 d, the illumination light passes through the first polarizing plate 116 and becomes linearly polarized light (referred to as first linearly polarized light) and enters the liquid crystal layer 13. When attention is paid to the pixel region Pr, the liquid crystal layer 13 is in a state in which no electric field is applied in a state where no image signal is supplied to the pixel electrode 113, and thus exhibits birefringence. The light incident on the liquid crystal layer 13 in the state where no electric field is applied becomes phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, and enters the convex lens portion 123a. The light is refracted by the surface of the convex lens portion 123a, and the light transmitted through the convex lens portion 123a enters the color material portion 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the transmission axis of the second polarizing plate 127, passes through the second polarizing plate 127, and the pixel region Pr becomes bright display (red). The light transmitted through the second polarizing plate 127 is condensed at the condensing point CP.

  The condensing state of the pixel regions Pg and Pb is the same as that of the pixel region Pr. However, the curvatures of the convex lens portions 123a, 123b, and 123c correspond to the absorption light wavelengths of the color material portions 122r, 122g, and 122b. Therefore, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively large curvature, and the light transmitted through the color material portion 122b having a short absorption light wavelength is Since the refraction is suppressed by the convex lens portion 123c having a relatively small curvature, even when the absorption light wavelength is different, for example, from the transparent substrate 12A to the condensing point of the light transmitted through the color material portions 122r, 122g, and 122b. Can be made substantially equal.

  In the above embodiment, the illumination light is applied from the element substrate 11 side, but the present invention is not limited to this. For example, illumination light may be applied from the color filter substrate 12d side toward the element substrate 11 side. Even in this case, the light incident on the color filter substrate 12d can be refracted and condensed by the convex lens portions 123a, 123b, and 123c. And the light which permeate | transmits the color material part 122r with a long absorption light wavelength is largely refracted by the convex lens part 123a with a relatively large curvature, and the light which permeate | transmits the color material part 122b with a short absorption light wavelength is a relative curvature. Since the refraction is suppressed by the small convex lens portion 123c, the distance to the condensing point of the light transmitted through the element substrate 11 can be made substantially equal even when the absorption light wavelength is different.

  Since the state in which the image signal is supplied to the pixel electrode 113 is the same as that in the first embodiment, the description thereof is omitted.

(Color filter substrate manufacturing method)
Next, a method for manufacturing a color filter substrate will be described. 13 and 14 are process diagrams showing a method for manufacturing a color filter. The configuration of the droplet discharge device IJ used for manufacturing the color filter substrate is the same as that of the first embodiment, and thus the description thereof is omitted.

  First, the partition 121 is formed on the transparent substrate 12A. Specifically, as shown in FIG. 13A, for example, a resin material is formed on the transparent substrate 12A, and portions overlapping the pixel regions Pr, Pg, and Pb are opened in this film, and the partition wall 121 is formed. Form.

  Next, as shown in FIG. 13B, the functional liquid containing the materials of the color material portions 122r, 122g, and 122b is applied from the droplet discharge head 1001 of the droplet discharge apparatus IJ toward the region partitioned by the partition 121. The droplets 51r, 52g, and 53b are ejected, and the functional liquids 122r ′, 122g ′, and 122b ′ are attached to the portions surrounded by the partition wall 121. At this time, the surface treatment is performed on the regions partitioned by the partition walls 121 corresponding to the color material portions 122r, 122g, and 122b, for example, before discharging the droplets so that the curvatures of the color material portions 122r, 122g, and 122b are different. . Specifically, in the partition region corresponding to the color material portion 122r, a surface treatment having strong lyophilic power is applied particularly to the side surface portion of the partition wall 121 (the surface of the partition wall 121 in the partition region). On the other hand, surface treatment with weak lyophilicity is performed in the order of the partition area corresponding to the color material portion 122g and the partition area corresponding to the color material portion 122b. Thereby, for example, the functional liquid applied to the partition region corresponding to the coloring material portion 122r having strong lyophilicity spreads (spreads up) on the surface of the partition wall 121. On the other hand, the functional liquid applied to the partition area corresponding to the weakly lyophilic color material part 122b does not spread and spread on the surface of the partition wall 121 compared to the functional liquid applied to the partition area corresponding to the color material part 122r. (There is little uplift).

  Thereafter, as shown in FIG. 13C, the attached functional liquids 122r ', 122g', 122b 'are solidified by drying, baking, etc., thereby forming the color material parts 122r, 122g, 122b. The surface portions of the solidified color material portions 122r, 122g, and 122b form a concave curved surface, and the curvature of the curved surface increases in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Formed as follows.

  Next, as shown in FIG. 14A, the functional liquid containing the material of the convex lens portion 123 is discharged as droplets 57 from the droplet discharge head 1001 of the droplet discharge apparatus IJ toward the respective color material portions 122r, 122g, 122b. Then, the functional liquids 123a ′, 123b ′, and 123c ′ are applied onto the color material portions 122r, 122g, and 122b (application process).

  Then, the applied functional liquids 123a ', 123b', 123c 'are solidified by drying and baking (solidification step). Thereby, convex lens parts 123a, 123b, and 123c having different curvatures are formed corresponding to the respective color material parts 122r, 122g, and 122b. That is, the curvature increases in the order of the convex lens portion 123c, the convex lens portion 123b, and the convex lens portion 123a.

  Next, a transparent conductive material such as ITO is formed on each convex lens portion 123 a, 123 b, 123 c and on the partition wall 121 to form the common electrode 125. Then, the second alignment film 126 is formed on the common electrode 125. Thereby, the color filter substrate 12d excluding the second polarizing plate 127 is formed.

  Further, as a manufacturing method of the liquid crystal display device 1d, the element substrate 11 is formed separately from the formation of the color filter substrate 12d in the same manner as in the first embodiment. Next, the element substrate 11 and the color filter substrate 12d are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11 and the color filter substrate 12d, the periphery of the element substrate 11 and the periphery of the color filter substrate 12d are bonded together, and liquid crystal is interposed between the element substrate 11 and the color filter substrate 12d. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1d is obtained by attaching the first polarizing plate 116 to the outside of the transparent substrate 11A and attaching the second polarizing plate 127 to the outside of the transparent substrate 12A.

  Therefore, according to said 4th Embodiment, in addition to the effect of 1st-3rd embodiment, there exists an effect shown below.

  (1) Convex lens portions 123a, 123b, and 123c having convex shapes toward the respective color material portions 122r, 122g, and 122b were formed. The curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength among the plurality of color material portions 122r, 122g, and 122b corresponds to the other color material portions 122g and 122b having a short absorption light wavelength. It formed so that it might become larger than the curvature of the convex lens parts 123b and 123c. Specifically, the curvature of the convex lens portion 123 corresponding to each of the color material portions 122b, 122g, and 122r is increased in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1d can be made uniform. Thereby, a color balance can be improved.

  (2) The convex lens portions 123a, 123b, and 123c are formed on the color material portions 122r, 122g, and 122b, and are protective films that protect the surface portions of the color material portions 122r, 122g, and 122b, or the color material portions 122r and 122g. , 122b also functions as a flattening layer for flattening. Therefore, materials and members such as a protective film and a planarizing film can be omitted, the structure of the color filter substrate 12d can be simplified, and the cost can be reduced.

[Fifth Embodiment]
Next, a fifth embodiment will be described. Since the basic configuration of the liquid crystal display device and the configuration of the electronic device are the same as those in the first embodiment, the description thereof is omitted (see FIGS. 1 and 8). Moreover, the same code | symbol as 1st Embodiment is attached | subjected about the member similar to 1st Embodiment.

  FIG. 15 is a cross-sectional view of a main part of the liquid crystal display device according to the present embodiment. As shown in FIG. 15, the liquid crystal display device 1e includes an element substrate 11, a color filter substrate 12e disposed to face the element substrate 11, and a liquid crystal layer 13 sandwiched between the element substrate 11 and the color filter substrate 12e. It has. Since the configuration of the element substrate 11 and the configuration of the liquid crystal layer 13 and the like are the same as those in the first embodiment, the description thereof will be omitted, and a description will be mainly given of portions different from the configuration of the first embodiment, that is, the configuration of the color filter substrate 12e. To do.

  The color filter substrate 12e condenses light that has passed through the transparent substrate 12A as a substrate, a plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and the color material portions 122r, 122g, and 122b. In addition, a condensing unit 130 including a convex lens unit 123 in which a focal length of light transmitted through each of the color material units 122r, 122g, and 122b is adjusted is provided.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  Convex lens portions 123a, 123b, and 123c constituting the light condensing unit 130 are provided at positions facing the respective color material portions 122r, 122g, and 122b. In this embodiment, the convex lens part 123 is provided on each color material part 122r, 122g, 122b. The convex lens portion 123 is provided for each of the plurality of pixel regions Pr, Pg, and Pb surrounded by the partition wall 121. The convex lens portion 123 is formed from a resin material having translucency. And the convex lens part 123 has convex shape toward each color material part 122r, 122g, 122b.

  In the color filter substrate 12e according to the present embodiment, among the plurality of color material portions 122r, 122g, and 122b, the convex lens portion 123a corresponding to the color material portion having a long absorption light wavelength has another color having a short absorption light wavelength. It is made of a material having a higher refractive index than the convex lens portions 123b and 123c corresponding to the material portions. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Accordingly, the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is formed of a material having a higher refractive index than the convex lens portions 123b and 123c corresponding to the color material portions 122g and 122b having a short absorption light wavelength. . That is, the convex lens portion 123c corresponding to the color material portion 122b, the convex lens portion 123b corresponding to the color material portion 122g, and the convex lens portion 123a corresponding to the color material portion 122r are formed of materials having a high refractive index in this order. Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, the refraction of light transmitted through the color material portion 122b having a short absorption light wavelength can be reduced, and the focal length can be increased. The refractive indexes of the convex lens portions 123a, 123b, and 123c are adjusted so that the distances that are transmitted through and condensed through the color material portions 122r, 122g, and 122b are equal from the surface of the transparent substrate 12A. Note that the method of setting the refractive index of the convex lens portions 123a, 123b, 123c corresponding to the color material portions 122r, 122g, 122b is not particularly limited. For example, the refractive index of the convex lens portion 123b corresponding to the color material portion 122g is used as a reference. As described above, the convex lens portion 123a can be formed so that the refractive index is larger than the refractive index of the convex lens portion 123b, and the curvature of the convex lens portion 123c is smaller than the refractive index of the convex lens portion 123b.

  In the present embodiment, the color material portions 122r, 122g, and 122b are formed with substantially the same refractive index. Therefore, the color filter substrate 12e absorbs light among the plurality of color material portions 122r, 122g, and 122b. The difference between the refractive index of the convex lens portion 123 corresponding to the color material portion having a long wavelength and the refractive index of the color material portion is the refractive index of the convex lens portion 123 corresponding to the color material portion having a short absorption light wavelength and the refraction of the color material portion. It can be said that it is larger than the difference from the rate. Specifically, the difference in refractive index between the color material portion 122r and the convex lens portion 123a is the largest, and then the difference in refractive index between the color material portion 122g and the convex lens portion 123b is large, so that the color material portion 122b and the convex lens portion 123c. And the refractive index difference is the smallest.

  A common electrode 125 is provided on the convex lens portions 123a, 123b, and 123c and on the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate (polarizing layer) 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. Note that the details of the common electrode 125 and the second polarizing plate (polarizing layer) 127 are the same as those in the first embodiment, and a description thereof will be omitted.

  Next, the light collection state of the liquid crystal display device 1e will be described with reference to FIG. In the liquid crystal display device 1 e, the illumination light passes through the first polarizing plate 116 and becomes linearly polarized light (referred to as first linearly polarized light) and enters the liquid crystal layer 13. When attention is paid to the pixel region Pr, the liquid crystal layer 13 is in a state in which no electric field is applied in a state where no image signal is supplied to the pixel electrode 113, and thus exhibits birefringence. The light incident on the liquid crystal layer 13 in the state where no electric field is applied becomes phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, and enters the convex lens portion 123a. The light is refracted by the surface of the convex lens portion 123a, and the light transmitted through the convex lens portion 123a enters the color material portion 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the transmission axis of the second polarizing plate 127, passes through the second polarizing plate 127, and the pixel region Pr becomes bright display (red). The light transmitted through the second polarizing plate 127 is condensed at the condensing point CP.

  The condensing states of the pixel regions Pg and Pb are the same as those of the pixel region Pr. However, the convex lens portions 123a, 123b, and 123c are made of materials corresponding to the absorption light wavelengths in the order of the color material portions 122b, 122g, and 122r. Therefore, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively high refractive index, and the color material portion 122b having a short absorption light wavelength. Since the light transmitted through the light is suppressed by the convex lens portion 123c having a relatively low refractive index, for example, even if the absorption light wavelength is different, the light passes through the color material portions 122r, 122g, and 122b from the transparent substrate 12A. The distance to the light condensing point can be made substantially equal.

  In the above embodiment, the illumination light is applied from the element substrate 11 side, but the present invention is not limited to this. For example, illumination light may be applied from the color filter substrate 12e side toward the element substrate 11 side. Even in this case, the light incident on the color filter substrate 12e can be refracted and condensed by the convex lens portions 123a, 123b, and 123c. The light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively high refractive index, and the light transmitted through the color material portion 122b having a short absorption light wavelength is relatively Since the refraction is suppressed by the convex lens 123c having a low refractive index, the distance to the condensing point of the light transmitted through the element substrate 11 can be made substantially equal even when the absorption light wavelength is different.

  Since the state in which the image signal is supplied to the pixel electrode 113 is the same as that in the first embodiment, the description thereof is omitted.

(Color filter substrate manufacturing method)
Next, a method for manufacturing a color filter substrate will be described. The configuration of the droplet discharge device IJ used for manufacturing the color filter substrate is the same as that of the first embodiment, and thus the description thereof is omitted.

  First, the partition 121 is formed on the transparent substrate 12A. Specifically, for example, a resin material is formed on the transparent substrate 12A, and portions that overlap the pixel regions Pr, Pg, and Pb are opened in this film to form the partition wall 121 (see FIG. 13A). .

  Next, the functional liquid containing the materials of the color material portions 122r, 122g, and 122b is ejected as droplets 51r, 52g, and 53b from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the region partitioned by the partition 121. Functional liquids 122r ′, 122g ′, and 122b ′ are attached to the portions surrounded by the partition walls 121. At this time, for example, the surface treatment is performed on the region partitioned by the partition 121 corresponding to each of the color material portions 122r, 122g, and 122b before the droplet discharge. Specifically, a surface treatment having lyophilicity is performed in the partitioned areas corresponding to the color material portions 122r, 122g, and 122b. As a result, the functional liquid applied to each partition region is spread and spreads to the same extent on the surface of the partition wall 121 (yes).

  Thereafter, the adhered functional liquids 122r ', 122g', 122b 'are solidified by drying, baking, or the like to form the color material parts 122r, 122g, 122b. The curvatures of the concave surfaces of the surface portions of the solidified color material portions 122r, 122g, and 122b are formed substantially equal.

  Next, the functional liquid containing the material of the convex lens portion 123 is ejected as droplets 57 from the droplet ejection head 1001 of the droplet ejection apparatus IJ toward the respective color material portions 122r, 122g, 122b, and the respective color material portions 122r, 122g, 122b. The functional liquids 123a ′, 123b ′, and 123c ′ are applied on the top (application process). In the coating step, functional liquids having different refractive indexes are discharged as droplets to the color material portions 122r, 122g, and 122b. In the present embodiment, a functional liquid containing a material having a high refractive index in the order of the color material parts 122b, 122g, and 122r is ejected as droplets.

  Then, the applied functional liquids 123a ', 123b', 123c 'are solidified by drying and baking (solidification step). Thereby, convex lens parts 123a, 123b, and 123c having different refractive indexes are formed corresponding to the respective color material parts 122r, 122g, and 122b.

  Subsequently, the common electrode 125 is formed on each convex lens part 123a, 123b, 123c and the partition 121. Then, the second alignment film 126 is formed on the common electrode 125. Thereby, the color filter substrate 12e excluding the second polarizing plate 127 is formed.

  As a manufacturing method of the liquid crystal display device 1e, the element substrate 11 is formed separately from the formation of the color filter substrate 12e in the same manner as in the first embodiment. Next, the element substrate 11 and the color filter substrate 12e are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11 and the color filter substrate 12e, the peripheral edge of the element substrate 11 and the peripheral edge of the color filter substrate 12e are bonded together, and a liquid crystal is provided between the element substrate 11 and the color filter substrate 12e. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1e is obtained by sticking the first polarizing plate 116 outside the transparent substrate 11A and sticking the second polarizing plate 127 outside the transparent substrate 12A.

  Therefore, according to said 5th Embodiment, in addition to the effect of 1st-4th embodiment, there exists an effect shown below.

  (1) Among the plurality of color material portions 122r, 122g, 122b, a convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is replaced with a convex lens corresponding to the other color material portions 122g, 122b having a short absorption light wavelength. It was formed of a material having a higher refractive index than the parts 123b and 123c. Specifically, the refractive index of the convex lens portion 123 corresponding to each of the color material portions 122r, 122g, and 122b is increased in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1e can be made uniform. Thereby, a color balance can be improved.

  (2) The shape of each convex lens part 123a, 123b, 123c can be made the same, and the color filter substrate 12e can be formed easily. Furthermore, since each convex lens part 123a, 123b, 123c functions as a protective film or a flattening layer for the color material parts 122r, 122g, 122b, the configuration of the color filter substrate 12e can be simplified.

[Sixth Embodiment]
Next, a sixth embodiment will be described. Since the basic configuration of the liquid crystal display device and the configuration of the electronic device are the same as those in the first embodiment, the description thereof is omitted (see FIGS. 1 and 8). Moreover, the same code | symbol as 1st Embodiment is attached | subjected about the member similar to 1st Embodiment.

  FIG. 16 is a cross-sectional view of a main part of the liquid crystal display device according to the present embodiment. As shown in FIG. 16, the liquid crystal display device 1g includes an element substrate 11g, a color filter substrate 12 disposed to face the element substrate 11g, and a liquid crystal layer 13 sandwiched between the element substrate 11g and the color filter substrate 12. It has.

  The color filter substrate 12 includes a transparent substrate 12A as a substrate, a plurality of color material portions 122r, 122g, and 122b formed on the transparent substrate 12A, and a planarization layer formed on the color material portions 122r, 122g, and 122b. 124 and the like.

  The transparent substrate 12A is a transparent substrate made of glass, quartz, plastic, or the like. A partition wall 121 is provided in a portion overlapping the light shielding region D on the liquid crystal layer 13 side of the transparent substrate 12A. In the partition wall 121, openings are provided in portions overlapping the pixel regions Pr, Pg, and Pb. That is, the partition wall 121 surrounds each of the pixel regions Pr, Pg, and Pb in an annular shape. The partition wall 121 is made of, for example, an acrylic resin containing a light shielding material such as a black pigment, and functions as a black matrix.

  Color material portions 122r, 122g, and 122b are partitioned and disposed in portions overlapping the pixel regions Pr, Pg, and Pb on the liquid crystal layer 13 side of the transparent substrate 12A. The color material portions 122r, 122g, and 122b are disposed in each of a plurality of openings provided in the partition wall 121 and are partitioned by the partition wall 121. The color material parts 122r, 122g, and 122b have characteristics of transmitting red light, green light, and blue light, respectively, and absorbing color light in other wavelength bands.

  A planarizing layer 124 is provided on the color material portions 122r, 122g, and 122b. The planarization layer 124 is made of a light-transmitting resin material or the like. The surface portion of the color material portion 122 is flattened by the flattening layer 124. In the present embodiment, the surface of the planarizing layer 124 on the liquid crystal layer 13 side is substantially flush with the surface of the partition wall 121 on the liquid crystal layer 13 side.

  A common electrode 125 is provided on the planarization layer 124 and the partition wall 121. A second alignment film 126 is provided on the common electrode 125 on the side. A second polarizing plate (polarizing layer) 127 is disposed on the opposite side of the transparent substrate 12A from the color material portion 122. The second polarizing plate 127 has a characteristic of passing linearly polarized light. Here, the transmission axis of the second polarizing plate 127 forms an angle of approximately 90 ° with respect to the transmission axis of the first polarizing plate 116. The common electrode 125, the second alignment film 126, and the second polarizing plate 127 are all provided over the entire surface so as to correspond to the pixel regions Pr, Pg, and Pb.

  The liquid crystal layer 13 is made of a liquid crystal material having birefringence. Here, the alignment state of the liquid crystal layer 13 is TN alignment, and the liquid crystal layer 13 exhibits birefringence when no electric field is applied. When an electric field is applied to the liquid crystal layer 13, the director direction of the liquid crystal molecules becomes substantially parallel to the electric field direction, and the liquid crystal layer 13 does not exhibit birefringence.

  The element substrate 11g is, for example, an active matrix type, and has a transparent substrate 11A as a substrate made of glass, quartz, plastic, or the like as a base. An element layer 111 is provided on the transparent substrate 11A. The element layer 111 is provided with a thin film transistor (TFT) 112 as an element, various wirings such as the scanning line 10a and the data line 10b shown in FIG. The TFT 112 and various wirings are provided in a portion corresponding to the light shielding region D where light is shielded.

  On the liquid crystal layer 13 side of the element layer 111, island-shaped pixel electrodes 113 are formed for the pixel regions Pr, Pg, and Pb. The pixel electrode 113 has a one-to-one correspondence with the TFT 112 and is electrically connected to the corresponding TFT 112. The TFT 112 switches the image signal based on the scanning signal and supplies the image signal to the pixel electrode 113 at a predetermined timing.

  A passivation film 114 made of an inorganic material such as silicon oxide is provided on the element layer 111 that overlaps the light shielding region D. The passivation film 114 is formed over the periphery of the pixel electrodes 113 so as to cover the periphery of the pixel electrodes 113 in a ring shape.

  On the transparent substrate 11A, the light transmitted through the color material portions 122r, 122g, and 122b is condensed, and the focal length of the light transmitted through the color material portions 122r, 122g, and 122b is the color material portions 122r and 122g. , 122b is provided with a condensing part 130 including a convex lens part 123 adjusted for each. In the present embodiment, convex lens portions 123a, 123b, and 123c having convex shapes toward the color material portions 122r, 122g, and 122b are provided on the pixel electrode 113 at positions facing the color material portions 122r, 122g, and 122b. Is formed. The convex lens portion 123 is formed from a resin material having translucency.

  Here, the shape of the convex lens portion 123 according to the present embodiment will be described in detail. As shown in FIG. 17, the convex lens portion 123 has different curvatures of the convex lens portion 123 for each of the color material portions 122r, 122g, and 122b, and has a long absorption light wavelength among the color material portions 122r, 122g, and 122b. The curvature of the convex lens part 123 corresponding to the color material part is formed to be larger than the curvature of the convex lens part 123 corresponding to the color material part having a short absorption light wavelength. In the present embodiment, among the color material portions 122r, 122g, and 122b, the color material portion 122r that transmits red light has the longest absorption light wavelength, and then the color material portion 122g that transmits green light has the longest length and blue light. The color material portion 122b that transmits the light has the shortest absorption light wavelength. Accordingly, the curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength is formed to be larger than the curvature of the convex lens portions 123b and 123c corresponding to the color material portions 122g and 122b having a short absorption light wavelength. ing. In other words, the convex lens portion 123c corresponding to the color material portion 122b, the convex lens portion 123b corresponding to the color material portion 122g, and the convex lens portion 123a corresponding to the color material portion 122r are formed so as to increase in curvature. Thereby, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted, and the focal length can be shortened. On the other hand, the refraction of light transmitted through the color material portion 122b having a short absorption light wavelength can be reduced, and the focal length can be increased. The curvatures of the convex lens portions 123a, 123b, and 123c are formed so that the distances that are transmitted through the color material portions 122r, 122g, and 122b are equal from the surface of the transparent substrate 12A. Note that the method of setting the curvature of the convex lens portions 123a, 123b, and 123c corresponding to the color material portions 122r, 122g, and 122b is not particularly limited. For example, the curvature of the convex lens portion 123b corresponding to the color material portion 122g is used as a reference. The curvature of the convex lens portion 123a can be formed so as to be larger than the curvature of the convex lens portion 123b, and the curvature of the convex lens portion 123c can be made smaller than the curvature of the convex lens portion 123b.

  A first alignment film 115 is provided on the convex lens portion 123, the pixel electrode 113, and the passivation film 114. The first alignment film 115 is obtained by performing an alignment process such as a rubbing process on a film made of polyimide or the like, and controls the alignment state of the liquid crystal layer 13 together with a second alignment film 126 described later. Here, the first alignment film 115 and the second alignment film 126 are subjected to alignment treatment so that the liquid crystal layer 13 is nematic twist alignment (TN alignment).

  Next, the condensing state of the liquid crystal display device 1g will be described. FIG. 17 is a schematic diagram illustrating a light collection state of the liquid crystal display device. In the liquid crystal display device 1 g, the illumination light passes through the first polarizing plate 116 and becomes linearly polarized light (referred to as first linearly polarized light) and enters the convex lens unit 123. Here, focusing on the pixel region Pr, the light is refracted by the convex lens portion 123a, and the light transmitted through the convex lens portion 123a enters the liquid crystal layer. In a state where no image signal is supplied to the pixel electrode 113, the liquid crystal layer 13 is in an electric field non-applied state and exhibits birefringence. The light incident on the liquid crystal layer 13 in the non-electric field application state is phase-modulated and becomes second linearly polarized light rotated by 90 ° from the first linearly polarized light, and is incident on the color material portion 122r. The light incident on the color material portion 122r absorbs light in a wavelength band other than red light, and the red light is emitted from the color material portion 122r. The red light emitted from the color material portion 122r has a vibration direction substantially coincident with the transmission axis of the second polarizing plate 127, passes through the second polarizing plate 127, and the pixel region Pr becomes bright display (red). The light transmitted through the second polarizing plate 127 is condensed at the condensing point CP.

  The condensing state of the pixel regions Pg and Pb is the same as that of the pixel region Pr. However, the curvatures of the convex lens portions 123a, 123b, and 123c correspond to the absorption light wavelengths of the color material portions 122r, 122g, and 122b. Therefore, the light transmitted through the color material portion 122r having a long absorption light wavelength is largely refracted by the convex lens portion 123a having a relatively large curvature, and the light transmitted through the color material portion 122b having a short absorption light wavelength is Since the refraction is suppressed by the convex lens portion 123c having a relatively small curvature, even when the absorption light wavelength is different, for example, from the transparent substrate 12A to the condensing point of the light transmitted through the color material portions 122r, 122g, and 122b. Can be made substantially equal.

  In the above embodiment, the illumination light is applied from the element substrate 11g side, but the present invention is not limited to this. For example, illumination light may be applied from the color filter substrate 12 side toward the element substrate 11g side. Even in this case, the light incident on the color filter substrate 12 can be refracted and condensed by the convex lens portions 123a, 123b, and 123c. And the light which permeate | transmits the color material part 122r with a long absorption light wavelength is largely refracted by the convex lens part 123a with a relatively large curvature, and the light which permeate | transmits the color material part 122b with a short absorption light wavelength is a relative curvature. Since the refraction is suppressed by the small convex lens portion 123c, the distance to the condensing point of the light transmitted through the element substrate 11g can be made substantially equal even when the absorption light wavelength is different.

  Since the state in which the image signal is supplied to the pixel electrode 113 is the same as that in the first embodiment, the description thereof is omitted.

(Method for manufacturing element substrate)
Next, a method for manufacturing the element substrate will be described. FIG. 18 is a process diagram showing a method for manufacturing an element substrate. Note that the configuration of the droplet discharge device IJ used for manufacturing the element substrate is the same as that of the first embodiment, and thus description thereof is omitted.

  First, an element layer 111 such as a thin film transistor (TFT) 112 is formed on the transparent substrate 11 </ b> A, and a pixel electrode 113 is formed on the element layer 111. Then, as shown in FIG. 18A, the functional liquid containing the material of the convex lens portion 123 is ejected as droplets 57 on the pixel electrode 113 toward the positions corresponding to the color material portions 122a, 122b, and 122c. Then, the functional liquids 123a ′, 123b ′, and 123c ′ are applied (application process).

  In the coating step, the coating amount is increased in the order of the functional liquid 123c ′, the functional liquid 123b ′, and the functional liquid 123a ′. Thereby, the curvatures of the functional liquids 123a ', 123b', 123c 'in the liquid state can be increased in the order of the color material part 122b, the color material part 122g, and the color material part 122r.

  Then, the applied functional liquids 123a ', 123b', 123c 'are solidified by drying and baking (solidification step). As a result, as shown in FIG. 18B, convex lens portions 123a, 123b, and 123c having different curvatures corresponding to the convex portions of the color material portions 122r, 122g, and 122b are formed. That is, the curvature increases in the order of the lens portion 123c, the convex lens portion 123b, and the convex lens portion 123a.

  Next, as shown in FIG. 18C, a first alignment film 115 is formed on the convex lens portion 123, the pixel electrode 113, and the passivation film 114, and the first alignment film 115 is subjected to an alignment process by a rubbing process or the like. . Thereby, the element substrate 11g excluding the first polarizing plate 116 is formed.

  As a manufacturing method of the liquid crystal display device 1g, the color filter substrate 12 is formed separately from the formation of the element substrate 11g. Next, the element substrate 11g and the color filter substrate 12 are arranged to face each other with the pixel electrode 113 and the common electrode 125 inside. Then, while aligning the element substrate 11g and the color filter substrate 12, the peripheral portion of the element substrate 11g and the peripheral portion of the color filter substrate 12 are bonded together, and a liquid crystal is provided between the element substrate 11g and the color filter substrate 12. The material is sealed to seal the liquid crystal layer 13. Moreover, the liquid crystal display device 1g is obtained by sticking the 1st polarizing plate 116 on the outer side of the transparent substrate 11A, and sticking the 2nd polarizing plate 127 on the outer side of the transparent substrate 12A.

  Therefore, according to the sixth embodiment, the following effects can be obtained.

  (1) Convex lens portions 123a, 123b, and 123c having convex shapes toward the respective color material portions 122r, 122g, and 122b were formed. The curvature of the convex lens portion 123a corresponding to the color material portion 122r having a long absorption light wavelength among the plurality of color material portions 122r, 122g, and 122b corresponds to the other color material portions 122g and 122b having a short absorption light wavelength. It formed so that it might become larger than the curvature of the convex lens parts 123b and 123c. Specifically, the curvature of the convex lens portion 123 corresponding to each of the color material portions 122r, 122g, and 122b is increased in the order of the color material portion 122b, the color material portion 122g, and the color material portion 122r. Accordingly, it is possible to shorten the focal length of the light transmitted through the color material portion 122r having a long absorption light wavelength, and to increase the focal length of the light transmitted through the color material portion 122b having a short absorption light wavelength. The height of the condensing point CP of the light transmitted through the color material portions 122r, 122g, 122b from the display surface of the display device 1g can be made uniform. Thereby, a color balance can be improved.

  (2) Since the functional liquid containing the material of the convex lens portion 123 is discharged as a droplet using the droplet discharge method, the shape and relative position of the convex lens portions 123a, 123b, and 123c can be controlled with high accuracy. Therefore, the light condensing accuracy is improved, and the high-quality element substrate 11g can be manufactured.

  In addition, it is not limited to said embodiment, The following modifications are mentioned.

  (Modification 1) In the first to fifth embodiments, the convex lens portion 123 is formed on the color material portion 122. However, the present invention is not limited to this, and the convex lens portion 123 may be formed at a position facing the color material portion 122. Good. For example, as shown in FIG. 19, a convex lens portion 123 is formed on the transparent substrate 12A at a position corresponding to each color material portion 122r, 122g, 122b, and the color material portion 122 is formed on the convex lens portion 123. May be. In this case, the curvatures of the convex lens portions 123a, 123b, and 123c may be set corresponding to the color material portions 122r, 122g, and 122b having different absorption light wavelengths. Alternatively, materials having different refractive indexes of the convex lens portions 123a, 123b, and 123c may be selected corresponding to the color material portions 122r, 122g, and 122b having different absorption light wavelengths. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 2) Furthermore, as shown in FIG. 20, for example, convex lens portions 123 may be formed on the common electrode 125 at positions corresponding to the respective color material portions 122r, 122g, 122b. In this case, the curvatures of the convex lens portions 123a, 123b, and 123c may be set corresponding to the color material portions 122r, 122g, and 122b having different absorption light wavelengths. Alternatively, materials having different refractive indexes of the convex lens portions 123a, 123b, and 123c may be selected corresponding to the color material portions 122r, 122g, and 122b having different absorption light wavelengths. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 3) In the first and second embodiments, the planarizing layer 124 is provided on the convex lens portion 123, but the planarizing layer 124 may be omitted. Even if it does in this way, while being able to acquire the same effect as the above, the structure of the color filter substrates 12a and 12b can be simplified.

  (Modification 4) Although the first to sixth embodiments have been described individually, these may be arbitrarily combined and applied as the element substrate 11, the color filter substrate 12, or the liquid crystal display device 1. In this way, it is possible to further condense the light that is transmitted efficiently and to adjust the focal length for each of the color material portions 122r, 122g, and 122b.

  (Modification 5) In the sixth embodiment, the convex lens portions 123a, 123b, and 123c having different curvatures are formed. However, the present invention is not limited to this. For example, the convex lens portions 123a, 123b, and 123 may be formed using materials having different refractive indexes. In this case, among the plurality of color material portions 122, a material having a higher refractive index than the convex lens portion 123 corresponding to the color material portion having a long absorption light wavelength and the convex lens portion 123 corresponding to the color material portion 122 having a short absorption light wavelength. Form with. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 6) In the sixth embodiment, the convex lens portion 123 having a convex shape toward each color material portion 122 is formed. However, the present invention is not limited to this. For example, a convex lens portion 123 having a convex shape toward the transparent substrate 11A may be formed. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 7) In the above embodiment, three types of color material portions 122r, 122g, and 122b have been described as examples. However, the present invention is not limited to this. For example, the color material portion 122 may be two types or four or more types. Even in such a case, the condensing unit 130 including the convex lens unit 123 may be configured according to the absorption light wavelength of the color material unit 122. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 8) The liquid crystal layer 13 described in the above embodiment may be of an orientation other than TN orientation such as VA orientation, or may be driven by a lateral electric field. When the orientation of the liquid crystal layer and the driving method are changed, the electrode arrangement, the characteristics of the alignment film, the characteristics of the polarizing plate, and the like may be changed as appropriate. In addition to a transmissive liquid crystal device, a reflective or transflective liquid crystal display device may be used. Even if it does in this way, the same effect as the above can be acquired.

  DESCRIPTION OF SYMBOLS 1 (1a-1i) ... Liquid crystal display device 11, 11g ... Element substrate, 11A ... Transparent substrate as a substrate, 12A ... Transparent substrate as a substrate, 12, 12a-12e ... Color filter substrate, 13 ... Liquid crystal layer, 57 Liquid droplet, 122, 122r, 122g, 122g ... Color material part, 123, 123a, 123b, 123c ... Convex lens part, 124, 124a, 124b, 124c ... Flattening layer as a protective film, 130 ... Condensing part, 1001 A droplet discharge head, 1100, a mobile personal computer as an electronic device, IJ, a droplet discharge device, CP, a condensing point.

Claims (15)

A substrate,
A plurality of color material portions formed on the substrate;
A light collecting unit including a convex lens unit that condenses light transmitted through each of the color material units and a focal length of the light transmitted through each of the color material units is adjusted for each color material unit. Color filter substrate characterized by. The color filter substrate according to claim 1,
The convex lens part of the condensing part is
A color filter substrate, wherein the color filter substrate is formed at a position facing each of the color material portions and has a convex shape in the opposite direction to each of the color material portions. The color filter substrate according to claim 1,
The convex lens part of the condensing part is
A color filter substrate formed at a position facing each of the color material portions and having a convex shape toward each of the color material portions. In the color filter substrate according to any one of claims 1 to 3,
Among the plurality of color material portions, the curvature of the convex lens portion corresponding to the color material portion having a long absorption light wavelength is larger than the curvature of the convex lens portion corresponding to the color material portion having a short absorption light wavelength. Characteristic color filter substrate. In the color filter substrate according to any one of claims 1 to 4,
Of the plurality of color material portions, the convex lens portion corresponding to the color material portion having a long absorption light wavelength is formed of a material having a higher refractive index than the convex lens portion corresponding to the color material portion having a short absorption light wavelength. A color filter substrate characterized by being made. In the color filter substrate according to any one of claims 1 to 5,
The condensing part is
The convex lens part;
The color material portion,
The color filter substrate, wherein among the plurality of color material portions, the color material portion having a long absorption light wavelength is formed of a material having a refractive index higher than that of the color material portion having a short absorption light wavelength. In the color filter substrate according to any one of claims 1 to 6,
The condensing part is
The convex lens part;
A protective film formed on the convex lens part,
Of the plurality of color material portions, the protective film corresponding to the color material portion having a long absorption light wavelength is formed of a material having a higher refractive index than the protective film corresponding to the color material portion having a short absorption light wavelength. A color filter substrate characterized by being made. An element substrate including an element formed on a substrate and transmitting light to a plurality of color material portions,
Condensing light that is formed on the substrate and that condenses light that has passed through each of the color material portions, and includes a convex lens portion in which the focal length of the light that has passed through each of the color material portions is adjusted for each of the color material portions. An element substrate comprising a portion. The element substrate according to claim 8,
The convex lens part of the condensing part is
An element substrate formed at a position facing each of the color material portions and having a convex shape toward each of the color material portions. The element substrate according to claim 8,
The convex lens part of the condensing part is
An element substrate formed at a position facing each of the color material portions and having a convex shape toward the substrate. In the element substrate according to any one of claims 8 to 10,
Among the plurality of color material portions, the curvature of the convex lens portion corresponding to the color material portion having a long absorption light wavelength is larger than the curvature of the convex lens portion corresponding to the color material portion having a short absorption light wavelength. A characteristic element substrate. In the element substrate according to any one of claims 8 to 11,
Of the plurality of color material portions, the convex lens portion corresponding to the color material portion having a long absorption light wavelength is formed of a material having a higher refractive index than the convex lens portion corresponding to the color material portion having a short absorption light wavelength. An element substrate. A functional liquid containing the material of the convex lens portion of the color filter substrate according to any one of claims 1 to 7 or the element substrate according to any one of claims 8 to 12 is ejected as droplets. An application step of applying a functional liquid to the substrate;
A solidifying step of solidifying the applied functional liquid to form the convex lens portion, or a method of manufacturing a color filter substrate or a method of manufacturing an element substrate.   A color filter substrate according to any one of claims 1 to 7, an element substrate according to any one of claims 8 to 12, a method for producing a color filter according to claim 13, and an element substrate. A liquid crystal display device comprising a color filter substrate or an element substrate manufactured by a manufacturing method.   An electronic apparatus comprising the liquid crystal display device according to claim 14.

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