JP2010160308A - Electrooptical apparatus and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce light loss in a liquid crystal device, for example. <P>SOLUTION: The corner (C1) of an opening region (10b) is not defined to a curved part in a crossing region where a data line (6) crosses a scanning line (11). The corner (C1) of the opening region (10b) is defined only by edges (10bx) and (10by) extending in the direction along the polarization direction of the light entering the opening region (10b) capable of transmitting light. Therefore, the liquid crystal device 1 can reduce the polarization of the light transmitting through the opening region (10b) and the light having transmitted through it to a polarization direction different from the essentially taken polarization direction, so that the liquid crystal device (1) can reduce light loss in displaying black and the liquid crystal device 1 can improve the display performance of displaying an image. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to, for example, an electro-optical device such as a liquid crystal device in which a thin film transistor is disposed for each pixel as a switching element on a substrate, and the electro-optical device to a technical field of an electronic device such as a liquid crystal projector.

  In a liquid crystal device that is an example of this type of electro-optical device, a storage capacitor is electrically connected to the pixel electrode so that a potential corresponding to an image signal is maintained in the pixel electrode during operation. Such a storage capacitor is, for example, an area where an opaque wiring portion or the like is formed in a display area for displaying an image, and is provided in a non-opening area that does not substantially transmit light (for example, , See Patent Document 1). A data line for supplying an image signal to the pixel electrode and a scanning line for supplying a scanning signal for switching the operation of a pixel switching element for switching control of the pixel electrode to the element have a display performance of the liquid crystal device. The non-opening region is formed so as not to decrease. Such a non-opening region forms a lattice-like region in the display region along the direction in which each of the data lines and the scanning lines extends. In the display area of the liquid crystal device, the opening areas through which light can be substantially transmitted are separated from each other by, for example, non-opening areas that are grid-like areas, and are arranged in a matrix in the display area.

  Further, in this type of liquid crystal device, a polarizing element such as a polarizing plate that polarizes light is a light incident side on which light source light of the liquid crystal device is incident, and light that is transmitted through the liquid crystal device is emitted from the liquid crystal device. Provided on each of the emission sides. Light polarized by these polarizing elements is incident on the display area of the liquid crystal device, and light emitted from the display area is polarized. The polarization direction in which the light is polarized is, for example, a direction in which each of the data line and the scanning line extends in the display area.

JP 2004-4722 A

  However, in order to increase the capacitance value of the storage capacitor for the purpose of improving the display performance of the liquid crystal device for displaying an image, and to prevent the aperture ratio, which is the ratio occupied by the aperture region in the pixel region, from being reduced, Is formed in a non-opening region extending in a lattice shape. More specifically, for example, the capacitor electrode of the storage capacitor is formed in a cross shape corresponding to the intersection where the data lines and the scanning lines intersect so as to maximize the area. At this time, in the intersecting region where the data lines and the scanning lines intersect, the corners of the capacitor electrodes are not formed at right angles but are formed as curved portions due to the patterning accuracy of the capacitor electrodes. According to such a curved portion, the light transmitted through the aperture region is polarized in a direction different from the direction in which it should be polarized, and light leakage occurs.

  Accordingly, the present invention has been made in view of the above-described problems, and includes, for example, an electro-optical device such as a liquid crystal device capable of improving display performance by reducing light leakage, and such an electro-optical device. It is an object to provide an electronic device.

  In order to solve the above problems, the electro-optical device according to the present invention extends on the substrate and each of the first direction and the second direction intersecting with each other in the display region on the substrate, and each other on the substrate. A plurality of first light-shielding films and a plurality of second light-shielding films formed in different layers, wherein light is transmitted through each of the plurality of pixel regions constituting the display region in the first direction and the second direction. A direction along a polarization direction of light incident on a possible opening region or light emitted from the opening region, and the opening region is the edge of each of the first light shielding film and the second light shielding film. It is defined by a portion extending along each of the first direction and the second direction.

  According to the electro-optical device according to the aspect of the invention, the region where the first light shielding film and the second light shielding film are formed in the display region is a region where light is not transmitted, that is, a non-opening region. In other words, an opening area through which light can be substantially transmitted in the display area is defined by the respective edges of the first light shielding film and the second light shielding film. More specifically, the opening region is defined by a portion extending along each of the first direction and the second direction in each edge of the first light shielding film and the second light shielding film. In addition, since the first light-shielding film and the second light-shielding film are formed in different layers, the corner of the opening region is defined as a curved portion in the intersection region where the light-shielding films intersect each other. Nothing. That is, the corner of the opening region is defined only by the edges extending along the first direction and the second direction, which are directions along the polarization direction of light incident on the opening region through which light can be transmitted.

  Therefore, according to the electro-optical device according to the present invention, the light transmitted through the aperture region or the transmitted light can be reduced from being polarized in a polarization direction different from the polarization direction to be originally polarized. Light can be reduced when black is displayed, and the electro-optical device can improve display performance for displaying an image. The first light-shielding film and the second light-shielding film not only have a light-shielding function, but may be shared with wirings or electrodes so as to constitute a part of the circuit portion on the substrate.

  In one aspect of the electro-optical device according to the present invention, the planar shape of each of the first light shielding film and the second light shielding film is a strip shape extending only along each of the first direction and the second direction. May be.

  According to this aspect, while defining the non-opening regions in a lattice shape in the display region, it is possible to define the open regions separated from each other by the non-opening regions and arranged in a matrix in the display region. .

  In another aspect of the electro-optical device according to the present invention, the electro-optical device includes a pixel electrode formed in each of the plurality of pixel regions, and the first light-shielding film is provided corresponding to the pixel region on the substrate. A scanning line for supplying a scanning signal for controlling the operation of the pixel switching transistor element to the pixel switching transistor element, and the second light shielding film is a data line for supplying an image signal to the pixel electrode. Good.

  According to this aspect, since the opening region can be defined by the data line and the scanning line, it is not necessary to provide a separate light shielding film.

  In this aspect, the transparent electrode includes a transparent capacitive electrode formed in the opening region and a transparent dielectric film formed on the transparent conductive film in the opening region, and the pixel electrode is made of a transparent conductive material. The pixel electrode, the dielectric film, and the capacitor electrode are electrically connected to an output terminal of the pixel switching transistor element, and the potential of the pixel electrode is set to a potential corresponding to the image signal. A storage capacitor that operates so as to be held may be configured.

  According to this aspect, since the storage capacitor can be formed in the opening region, it is not necessary to form the storage capacitor in the non-opening region, and the opening region can be defined only by the data line and the scanning line. In addition, since it is not necessary to provide a large capacitor electrode in the non-opening region in order to secure the storage capacitor, the aperture ratio can be increased.

  In order to solve the above problems, an electronic apparatus according to the present invention includes the above-described electro-optical device of the present invention.

  According to the electronic apparatus according to the present invention, since the electro-optical device according to the present invention described above is provided, a projection display device, a mobile phone, an electronic notebook, a word processor, and a viewfinder type capable of high-quality display. Alternatively, various electronic devices such as a monitor direct-view video tape recorder, a workstation, a videophone, a POS terminal, and a touch panel can be realized. In addition, as an electronic apparatus according to the present invention, for example, an electrophoretic device such as electronic paper can be realized.

  Such an operation and other advantages of the present invention will become apparent from the embodiments described below.

  Hereinafter, embodiments of an electro-optical device and an electronic apparatus according to the invention will be described with reference to the drawings. Hereinafter, as an example of the electro-optical device of the present invention, a liquid crystal device adopting a TFT active matrix driving method will be described.

<1: Liquid crystal device>
<1-1: Overall Configuration of Liquid Crystal Device>
First, the overall configuration of the liquid crystal device 1 according to the present embodiment will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a plan view showing the overall configuration of the liquid crystal device 1 according to the present embodiment, and FIG. 2 is a cross-sectional view taken along the line II-II ′ of FIG.

  1 and 2, the liquid crystal device 1 includes a TFT array substrate 10 and a counter substrate 20 that are arranged to face each other. The TFT array substrate 10 is an example of the “substrate” in the present invention. The TFT array substrate 10 is, for example, a transparent substrate such as a quartz substrate or a glass substrate, or a silicon substrate. The counter substrate 20 is a substrate made of the same material as the TFT array substrate 10, for example. A liquid crystal layer 50 is sealed between the TFT array substrate 10 and the counter substrate 20, and the TFT array substrate 10 and the counter substrate 20 are sealed around the image display region 10a where the electro-optical operation is performed. They are bonded to each other by a sealing material 52 provided in the region. The image display area 10a is an example of the “display area” in the present invention.

  The sealing material 52 is made of, for example, an ultraviolet curable resin, a thermosetting resin, or the like for bonding the two substrates, and is applied on the TFT array substrate 10 in the manufacturing process and then cured by ultraviolet irradiation, heating, or the like. It is. Further, for example, in the sealing material 52, a gap material 56 such as a glass fiber or a glass bead for dispersing the distance (inter-substrate gap) between the TFT array substrate 10 and the counter substrate 20 to a predetermined value is dispersed.

  A light-shielding frame light-shielding film 53 that defines the frame area of the image display area 10a is provided on the counter substrate 20 side in parallel with the inside of the seal area where the sealing material 52 is disposed. However, part or all of the frame light shielding film 53 may be provided as a built-in light shielding film on the TFT array substrate 10 side.

  A data line driving circuit 101, a sampling circuit 7, a scanning line driving circuit 104, and an external circuit connection terminal 102 are formed in the peripheral area located around the image display area 10 a on the TFT array substrate 10.

  In the peripheral region on the TFT array substrate 10, a data line driving circuit 101 and a plurality of external circuit connection terminals 102 are provided along one side of the TFT array substrate 10 on the outer peripheral side of the seal region.

  In the peripheral region on the TFT array substrate 10, the region located inside the seal region is sampled along one side of the image display region 10 a along one side of the TFT array substrate 10 and covered with the frame light shielding film 53. A circuit 7 is arranged.

  The scanning line driving circuit 104 is provided along two sides adjacent to one side of the TFT array substrate 10 so as to be covered with the frame light shielding film 53. Further, in order to electrically connect the two scanning line driving circuits 104 provided on both sides of the image display region 10a in this way, the TFT array substrate 10 is covered with the frame light shielding film 53 along the remaining side. A plurality of wirings 105 are provided.

  In the peripheral region on the TFT array substrate 10, vertical conduction terminals 106 are disposed in regions facing the four corners of the counter substrate 20, and vertical conduction is provided between the TFT array substrate 10 and the counter substrate 20. A material is provided corresponding to the vertical conduction terminal 106 and electrically connected to the terminal 106.

  In FIG. 2, on the TFT array substrate 10, a laminated structure is formed in which wirings such as TFTs for pixel switching, scanning lines, and data lines are formed. In the image display area 10a, pixel electrodes 9 are provided in a matrix form on the upper layer of wiring such as pixel switching TFTs, scanning lines, and data lines. The pixel electrode 9 is formed as a transparent electrode made of an ITO film. An alignment film 16 is formed on the pixel electrode 9.

  On the other hand, a light shielding film 23 is formed on the surface of the counter substrate 20 facing the TFT array substrate 10. The light shielding film 23 is formed of, for example, a light shielding metal film or the like, and is patterned, for example, in a lattice shape in the image display region 10a on the counter substrate 20. On the light shielding film 23 (below the light shielding film 23 in FIG. 2), the counter electrode 21 made of an ITO film is formed, for example, in a solid shape so as to face the plurality of pixel electrodes 9, and further on the counter electrode 21 (FIG. 2, below the counter electrode 21), an alignment film 22 is formed.

  The liquid crystal layer 50 is made of, for example, a liquid crystal in which one or several types of nematic liquid crystals are mixed, and takes a predetermined alignment state between the pair of alignment films. A liquid crystal storage capacitor is formed between the pixel electrode 9 and the counter electrode 21 by applying a voltage to each of the liquid crystal devices during driving.

  Although not shown here, on the TFT array substrate 10, in addition to the data line driving circuit 101 and the scanning line driving circuit 104, a plurality of data lines are precharged at a predetermined voltage level prior to the image signal. A precharge circuit to be supplied, an inspection circuit for inspecting the quality, defects, etc. of the liquid crystal device during manufacture or at the time of shipment may be formed.

<1-2: Electrical configuration of liquid crystal device>
Next, the electrical configuration of the image display area 10a of the liquid crystal device 1 will be described with reference to FIG. FIG. 3 is an equivalent circuit diagram of various elements, wirings, and the like in a plurality of pixels formed in a matrix that forms the image display region 10a of the liquid crystal device 1 according to the present embodiment.

  In FIG. 3, a pixel electrode 9 and a TFT 30 which is an example of the “pixel switching transistor element” of the present invention are formed in each of a plurality of pixel regions formed in a matrix form constituting the image display region 10a. ing. The TFT 30 is electrically connected to the pixel electrode 9, and performs switching control of the pixel electrode 9 so as to switch between supply and non-supply of the image signal to the pixel electrode 9 during operation of the liquid crystal device 1. The data line 6 to which the image signal is supplied is an example of the “second light shielding film” in the present invention, and is electrically connected to the source region of the TFT 30. Image signals S1, S2,..., Sn to be written to the data lines 6 may be supplied line-sequentially in this order, or may be supplied for each group to a plurality of adjacent data lines 6. Good.

  The scanning line 11 which is an example of the “first light shielding film” of the present invention is electrically connected to the gate of the TFT 30, and the liquid crystal device 1 scans the scanning line 11 in a pulsed manner at a predetermined timing. Gm, G2,..., Gm are applied in a line sequential order in this order. The pixel electrode 9 is electrically connected to the drain of the TFT 30, and the image signal S1, S2,..., Sn supplied from the data line 6 is obtained by closing the switch of the TFT 30 serving as a switching element for a certain period. It is written at a predetermined timing. A predetermined level of image signals S1, S2,..., Sn written to the liquid crystal via the pixel electrode 9 is constant between the counter electrode 21 (see FIG. 2) formed on the counter substrate 20 (see FIG. 2). Hold for a period.

  The liquid crystal constituting the liquid crystal layer 50 (see FIG. 2) modulates light and enables gradation display by changing the orientation and order of the molecular assembly depending on the applied voltage level. In the normally white mode, the transmittance for incident light is reduced according to the voltage applied in units of each pixel, and in the normally black mode, the light is incident according to the voltage applied in units of each pixel. The transmittance for light is increased, and light having a contrast corresponding to an image signal is emitted from the liquid crystal device as a whole.

  In order to prevent the image signal held here from leaking, a storage capacitor 70 is added electrically in parallel with the liquid crystal capacitor formed between the pixel electrode 9 and the counter electrode 21 (see FIG. 2). ing.

<1-3: Specific Configuration of Liquid Crystal Device>
Next, a specific configuration of a pixel of the liquid crystal device 1 will be described with reference to FIGS. FIG. 4 is a plan view schematically showing the positional relationship between electrodes and wirings arranged for performing an electro-optical operation in the image display region 10a of the liquid crystal device 1 according to this embodiment. 5 and 6 are plan views showing in detail the configuration of a part of the image display area 10a. Each of FIGS. 5 and 6 shows a layer different from each other on the TFT array substrate 10 by a solid line, and shows a planar structure in a slightly wider region than FIG. FIG. 7 is a cross-sectional view taken along the line VII-VII ′ in each of FIGS. 4 to 7, the scales of the respective layers and members are different from each other in order to make each layer and each member recognizable on the drawing. FIG. 8 is a plan view showing the division of the opening area and the non-opening area in the image display area 10a. FIG. 9 is an enlarged plan view showing an enlarged corner of the opening region. FIG. 10 is a plan view according to the comparative example of FIG.

  In FIG. 4, on the TFT array substrate 10, a scanning line 11 which is an example of the “first light shielding film” of the present invention and a data line 6 which is an example of the “second light shielding film” of the present invention are provided. , Extending along the X direction and the Y direction, which are typical examples of the “first direction” and the “second direction” of the present invention, respectively. Each of the data line 6 and the scanning line 11 intersects with each other on the TFT array substrate 10. Of the respective edges of the data lines 6 and the scanning lines 11, the edges extending along the X direction and the Y direction in the figure define an opening area that is a substantially light transmissive area in the image display area 10a. is doing. Conversely, in the image display area 10a on the TFT array substrate 10, the area where the data lines 6 and the scanning lines 11 are formed is formed in a non-opening area where light is not transmitted. In the present embodiment, the entire area overlapping the data line 6 and the scanning line 11 coincides with the non-opening area. Therefore, according to the data line 6 and the scanning line 11, the TFT 30 can be shielded from light without providing a separate light shielding film. In addition, since the storage capacitor 70 can be formed in the opening region, it is not necessary to form the storage capacitor in the non-opening region, and the opening region can be defined only by the data line 6 and the scanning line 11.

  In the vicinity of the intersection of the data line 6 and the scanning line 11, the TFT 30 (that is, the semiconductor layer 30 a and the gate electrode 30 b) is formed so as to overlap the scanning line 11. The scanning line 11 is made of a light-shielding conductive material, for example, W (tungsten), Ti (titanium), TiN (titanium nitride) or the like, and is wider than the semiconductor layer a so as to include the semiconductor layer 30a of the TFT 30. Is formed. Here, as will be described later, since the scanning line 11 is arranged on the lower layer side than the semiconductor layer 30 a, the TFT array substrate 10 is formed by forming the scanning line 11 wider than the semiconductor layer 30 a of the TFT 30 in this way. The channel region 30b of the TFT 30 can be almost or completely shielded from the return light, such as the back-surface reflection of light and the light emitted from other liquid crystal devices by a multi-plate projector or the like and penetrating the composite optical system. As a result, when the liquid crystal device 1 is operated, the light leakage current in the TFT 30 is reduced, the contrast ratio can be improved, and high-quality image display is possible.

  The TFT 30 includes a semiconductor layer 30a and a gate electrode 30b. The semiconductor layer 30a is formed including a source region 30a1, a channel region 30a2, and a drain region 30a3. Here, an LDD (Lightly Doped Drain) region may be formed at the interface between the channel region 30a2 and the source region 30a1 or between the channel region 30a2 and the drain region 30a3.

  The gate electrode 30b is formed through a gate insulating film in a region overlapping the channel region of the semiconductor layer 30a when viewed in plan on the TFT array substrate 10. Although not shown in FIG. 4, the gate electrode 30b is electrically connected to the scanning line 11 arranged on the lower layer side via the contact hole 34, and the TFT 30 is formed by applying a scanning signal. ON / OFF control.

  Since the data line 6 overlaps the TFT 30 on the TFT 30, the TFT 30 can be shielded from the upper side. The data line 6 is electrically connected to the contact hole 31. For example, the data line 6 is electrically connected to the source region 30 a 1 (see FIG. 7) of the TFT 30 and supplies an image signal to the TFT 30.

  On the other hand, the drain region 30a3 is electrically connected to the pixel electrode 9 through the contact hole 32, the relay layer 7, and the contact hole 33 that constitute an example of the “output terminal” of the present invention (see FIG. 7). .)

  In FIG. 5, the capacitor electrode 71 is made of, for example, a transparent conductive material such as ITO, and forms a pair of capacitor electrodes in the storage capacitor 70 together with the pixel electrode 9. The capacitive electrode 71 overlaps substantially the entire image display area 10a, and extends to the upper layer side of the data line 6 in the opening area through which light can pass.

  A plurality of pixel areas constituting the image display area 10 a, that is, areas corresponding to areas where the pixel electrodes 9 are provided, are divided by the data lines 6 and the scanning lines 11. The capacitor electrode 71 is formed on the lower layer side than the pixel electrode 9 (not shown in FIG. 5), and has an opening 5a for each pixel region. Inside the opening 5a, a contact hole 33 for electrically connecting the pixel electrode 9 and the drain region 30a3 (see FIG. 7) extends in the vertical direction in the drawing, that is, along the thickness direction of the TFT array substrate 10. Is formed. Therefore, according to the contact hole 33, the image signal potential output from the drain region 30a3 can be supplied to the pixel electrode 9 without being electrically short-circuited to the capacitor electrode 71 formed on the lower layer side of the pixel electrode 9. . As a result, the pixel electrode 9 can be driven on / off while providing the capacitor electrode 71 on the lower layer side of the pixel electrode 9, so that the liquid crystal device 1 having an extremely efficient wiring layout can be realized.

  In addition, while the size of the capacitor electrode 71 constituting one of the pair of capacitor electrodes that are a part of the storage capacitor 70 is made as large as possible, the electrical connection between the pixel electrode 9 and the drain region 30a3 through the contact hole 33 is achieved. Connection is possible.

  In FIG. 6, the pixel electrode 9 is formed in an island shape for each pixel region. In the present embodiment, each pixel region is divided into a matrix by data lines 6 and scanning lines 11. As shown by the dotted line 9 a in FIG. 4, the pixel electrode 9 is connected to the data line 6 and the scanning line 11 when the end of the pixel electrode 9 is viewed on the TFT array substrate 10 in each pixel region. It is formed so as to partially overlap. The storage capacitor 70 is formed in a region where the capacitor electrode 71 and the pixel electrode 9 overlap each other.

  In FIG. 7, insulating films 12, 13, 14 and 15 and a dielectric film 72 are formed on the TFT array substrate 10. The scanning line 11, the TFT 30, the data line 6, the capacitor electrode 71, and the pixel electrode 9 are formed on the TFT array substrate 10, the insulating film 12, the insulating film 14, the insulating film 15, and the dielectric film 72, respectively. Has been.

  The dielectric film 72 is a transparent film formed on the capacitor electrode 71 in the opening region where light can be transmitted. The dielectric film 72 is made of alumina having a dielectric constant relatively higher than that of other dielectric films, and forms a storage capacitor 70 together with the capacitor electrode 71 and the pixel electrode 9 in the opening region. Since alumina has a relatively high dielectric constant compared to other dielectric materials, it is possible to increase the settable capacitance value when the size of the storage capacitor 70 is constant. In addition, it is more preferable that the film thickness of the dielectric film 72 is thinner in order to increase the capacitance value of the storage capacitor 70.

  Since the storage capacitor 70 is composed of the transparent capacitor electrode 71, the dielectric film 72, and the pixel electrode 9, each of which has an aperture ratio that is a ratio occupied by the aperture region in the pixel region without narrowing the aperture region. There is no reduction. In addition, according to such a storage capacitor 70, since the storage capacitor 70 can be formed in the opening region, the capacitance value can be increased compared to the case where the storage capacitor is formed only in the non-opening region. is there.

  Therefore, according to the liquid crystal device 1, the capacity value of the storage capacitor 70 can be increased and the size of the opening region can be increased, so that the display performance of the liquid crystal device 1 can be improved.

  Next, the planar shape of the opening region defined by the respective edges of the data line 6 and the scanning line 11 will be described in detail with reference to FIGS.

  In FIG. 8, the opening region 10 b is defined by the respective edges of the data line 6 and the scanning line 11. More specifically, the opening region 10b is a region surrounded by the edge 10bx of the scanning line 11 extending along the X direction and the edge 10by of the data line 6 extending along the Y direction. Such opening regions 10b are provided in a matrix in the image display region 10a.

  Each of the plurality of opening regions 10b is separated from each other by a non-opening region 10c extending in a lattice shape in the image display region 10a.

  Here, as shown in FIG. 10, in the liquid crystal device according to the comparative example of the liquid crystal device 1, the corner portion of the capacitor electrode 73 for forming the storage capacitor in the intersection region where the data line 6 and the scanning line 11 intersect each other. The edge R of 73a becomes a curved portion due to processing conditions such as patterning accuracy when the capacitor electrode 73 is formed. The capacity electrode needs to have a certain area in order to secure a necessary storage capacity value, and is often wider than the width of the data line or the scanning line, and becomes a boundary part that defines the opening region. Therefore, the corner portion C2 of the opening region is defined by the edge R that is a curved portion. According to such a corner portion C2, the light transmitted through the opening region 10b is polarized in a direction different from the polarization direction to be polarized, more specifically, in an oblique direction with respect to each of the X direction and the Y direction. For this reason, light leakage occurs when black display is performed in the image display area 10a.

  Therefore, in the liquid crystal device 1, light leakage in the image display region 10a can be reduced with a unique configuration described below. 9 and 10, the corner C1 of the opening region 10b is not defined as a curved portion in the intersecting region where the data line 6 and the scanning line 11 intersect each other. That is, the corner portion C1 of the opening region 10b is defined only by the edges 10bx and 10by extending in directions along the polarization direction of the light incident on the opening region 10b through which light can be transmitted.

  Therefore, according to the liquid crystal device 1, since the light transmitted through the opening region 10b or the transmitted light can be reduced from being polarized in a polarization direction different from the polarization direction that should be polarized, the liquid crystal device 1 displays black. It is possible to reduce the light leakage that occurs when the image is displayed, and it is possible to improve the display performance of the liquid crystal device 1 displaying an image.

(Modification)
Next, a modification of the liquid crystal device according to the present embodiment will be described with reference to FIG. FIG. 11 is a plan view showing the division of the opening area and the non-opening area in the image display area of the liquid crystal device according to this example.

  As shown in FIG. 11, the planar shapes of the scanning line 11a and the data line 6a, which are examples of the “first light shielding film” and the “second light shielding film” of the present invention, are shown in the X direction and the Y direction in the drawing. It is a strip extending only along each of them. The scanning lines 11a and the data lines 6a define a non-opening region 10c in a lattice pattern in the image display region 10a, are separated from each other by the non-opening region 10c, and are arranged in a matrix in the image display region 10a. It is possible to define the opening region 10b. That is, the corner portion C3 of the opening region 10b defined by the scanning line 6a and the data line 6a overlapping each other does not include a curved portion, and extends along each of the X direction and the Y direction in the drawing. A right-angled part defined by an extending edge.

  Therefore, according to the liquid crystal device according to this example, the scanning region 11b and the data line 6a overlap each other regardless of the positional relationship between the scanning line 11a and the data line 6a. Since the corner portion C3 is defined by edges intersecting at right angles to each other, light leakage in the image display region 10a can be reduced without complicating the manufacturing process.

  The configuration of this example that simplifies the configuration of such a non-opening region contributes in particular to the fact that the storage capacitor is formed of a transparent member and arranged in the open region.

<2: Electronic equipment>
Next, an example in which the above-described liquid crystal device is applied as a light valve to a projector that is an example of an electronic device will be described with reference to FIG. FIG. 12 is a plan view showing a configuration example of the projector.

  In FIG. 12, a projector 1100 includes a lamp unit 1102 made of a white light source such as a halogen lamp. The projection light emitted from the lamp unit 1102 is separated into three primary colors of RGB by four mirrors 1106 and two dichroic mirrors 1108 arranged in the light guide 1104, and serves as a light valve corresponding to each primary color. The light enters the liquid crystal panels 1110R, 1110B, and 1110G.

  The configurations of the liquid crystal panels 1110R, 1110B, and 1110G are the same as those of the liquid crystal device described above, and are driven by R, G, and B primary color signals supplied from the image signal processing circuit. The light modulated by these liquid crystal panels enters the dichroic prism 1112 from three directions. In the dichroic prism 1112, R and B light is refracted at 90 degrees, while G light travels straight. Therefore, as a result of the synthesis of the images of the respective colors, a color image is projected onto the screen or the like via the projection lens 1114.

  Here, paying attention to the display images by the liquid crystal panels 1110R, 1110B, and 1110G, the display image by the liquid crystal panel 1110G needs to be horizontally reversed with respect to the display images by the liquid crystal panels 1110R and 1110B.

  In addition, since light corresponding to each primary color of R, G, and B is incident on the liquid crystal panels 1110R, 1110B, and 1110G by the dichroic mirror 1108, it is not necessary to provide a color filter.

  In addition to the electronic device described with reference to FIG. 12, a mobile personal computer, a mobile phone, a liquid crystal television, a viewfinder type, a monitor direct-view type video tape recorder, a car navigation device, a pager, an electronic device Examples include a notebook, a calculator, a word processor, a workstation, a videophone, a POS terminal, and a device equipped with a touch panel. Needless to say, the present invention can be applied to these various electronic devices.

  In addition to the liquid crystal devices described in the above embodiments, the present invention includes a reflective liquid crystal device (LCOS), a plasma display (PDP), a field emission display (FED, SED), an organic EL display, and a digital micromirror device. (DMD), electrophoresis apparatus and the like are also applicable.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and an electro-optical device with such a change, In addition, an electronic apparatus including the electro-optical device is also included in the technical scope of the present invention.

It is a top view which shows the whole structure of the liquid crystal device which concerns on this embodiment. It is II-II 'sectional drawing of FIG. It is a circuit diagram which shows the electrical structure of the liquid crystal device which concerns on this embodiment. It is a schematic diagram which shows transparently the positional relationship of wiring etc. in the image display area of the liquid crystal device concerning this embodiment. FIG. 5 is a plan view showing a layout of each component in one of different layers in the liquid crystal device according to the present embodiment. FIG. 5 is a plan view showing a layout of each component in another layer different from each other in the liquid crystal device according to the present embodiment. FIG. 7 is a cross-sectional view taken along the line VII-VII ′ of FIGS. 4 to 6. It is the top view which showed the division of the opening area | region and non-opening area | region in an image display area. It is the enlarged plan view which expanded and showed the corner | angular part of an opening area | region. It is a top view which concerns on the comparative example of FIG. FIG. 10 is a plan view showing the division of an opening area and a non-opening area in a modification of the electro-optical device according to the embodiment. 1 is a plan view illustrating a configuration of a projector that is an example of an electronic apparatus to which an electro-optical device according to an embodiment is applied.

  5a ... opening, 6, 6a ... data line, 7 ... relay layer, 9 ... pixel electrode, 10 ... TFT array substrate, 10a ... image display area, 10b ... Open region, 10c ... Non-open region, 11, 11a ... Scan line, 30 ... TFT, 30a ... Semiconductor layer, 30a1 ... Source region, 30a2 ... Channel region, 30a3 ... -Drain region, 30b ... Gate electrode, 50 ... Liquid crystal, 70 ... Storage capacitor, 71 ... Capacitance electrode

Claims (5)

A substrate,
A plurality of first light-shielding films and a plurality of second light-shielding films that extend in the first direction and the second direction that intersect with each other in the display region on the substrate and are formed in different layers on the substrate. And
The first direction and the second direction are along a polarization direction of light incident on an opening region through which light can be transmitted or light emitted from the opening region in each of a plurality of pixel regions constituting the display region. Direction,
The opening region is defined by a portion extending along each of the first direction and the second direction of each edge of the first light shielding film and the second light shielding film. apparatus. 2. The electro-optic according to claim 1, wherein the planar shape of each of the first light-shielding film and the second light-shielding film is a strip shape extending only along each of the first direction and the second direction. apparatus. A pixel electrode formed in each of the plurality of pixel regions,
The first light-shielding film is a scanning line that supplies a scanning signal for controlling an operation of a pixel switching transistor element provided corresponding to the pixel region on the substrate to the pixel switching transistor element,
The electro-optical device according to claim 1, wherein the second light shielding film is a data line that supplies an image signal to the pixel electrode. A transparent capacitive electrode formed in the opening region;
A transparent dielectric film formed on the transparent conductive film in the opening region,
The pixel electrode is made of a transparent conductive material, and is electrically connected to an output terminal of the pixel switching transistor element.
The pixel electrode, the dielectric film, and the capacitor electrode constitute a storage capacitor that operates so that the potential of the pixel electrode is held at a potential corresponding to the image signal. 4. The electro-optical device according to 3. An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 4.

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