JP2003330047A - Optoelectronic device, method for manufacturing the same and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for easily manufacturing an optoelectronic device having a barrier rib provided between substrates for a short time, wherein yield is enhanced and manufacturing costs are reduced, to provide the excellent optoelectronic device manufactured by the method and to provide an electronic equipment using the optoelectronic device. <P>SOLUTION: The method for manufacturing the optoelectronic device is provided with a step for encapsulating an electrooptical substance containing a polymerizable substance between a pair of substrates and a stage for dividing a region in which the electrooptical substance is encapsulated into a plurality of regions by polymerizing the polymerizable substance. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an electro-optical device, an electro-optical device and electronic equipment.

[0002]

2. Description of the Related Art In recent years, with the spread of mobile electronic devices such as mobile phones and notebook personal computers, display devices have been required to have higher functionality and have been actively researched. In particular, there is an increasing demand for low power consumption and thin display devices, and liquid crystal display devices have hitherto fulfilled the demand. However, as a thin display device, a display device using a self-luminous material such as organic electroluminescence and inorganic electroluminescence, and an electrophoretic display device utilizing the electrophoretic phenomenon due to the Coulomb force of charged particles have been proposed. It has features not found in display devices and is expected to be used in various fields.

The electrophoretic display device has a structure in which a dispersion medium containing charged particles (electrophoretic particles) which is an electro-optical material is filled between a pair of substrates provided with electrodes. By applying a voltage through the electrodes, the charged particles having a charge are attracted to the electrodes having opposite polarities, and desired display is performed by comparing the color of the charged particles and the color of the dispersion medium. For example, when white charged particles of titanium oxide having a positive charge and black charged particles of carbon having a negative charge are used together as the charged particles, the white charged particles and the black charged particles are attracted to electrodes of opposite polarities. Since they face each other, excellent contrast is obtained. This electrophoretic display device is characterized by having excellent resolution and contrast and having a wide viewing angle characteristic. In addition, once a voltage is applied and the charged particles are attracted to the electrodes by the electrophoretic phenomenon, the charged particles can be retained even when the power is turned off. Further, a polymer material can be used for the substrate, which is light and inexpensive. For this reason, specifically, it can be used as electronic paper and is expected as a display device to replace printed matter using paper as a medium.

In the electrophoretic display device, it is required that the components in the dispersion medium are uniform over the entire surface of the substrate without being separated due to the difference in specific gravity, for example, when two or more kinds of charged particles having different specific gravities are used. It Therefore, it has been proposed that the electro-optical device has a configuration in which a plurality of partition regions partitioned by partition walls are provided between the substrates and the partition regions are filled with a dispersion medium containing charged particles. In this configuration, the movement of the dispersion medium is allowed only inside the partitioned region, and the separation of the charged particles due to the difference in specific gravity can be eliminated.

Conventionally, an electrophoretic display device having a structure in which a plurality of partition regions partitioned by the above-mentioned partition walls are provided between the substrates first forms a partition wall on one substrate, and a plurality of partition regions partitioned by the partition walls. Then, each partition region was filled with a dispersion medium containing charged particles from the opening side, the opening was sealed, and the other substrate was laminated.

[0006]

However, the divided areas have a very small size of several μm to several hundreds of μm, and a number of display units corresponding to the number of display units are provided on the substrate surface. In addition, in the manufacturing method of filling the dispersion medium containing the charged particles, there is a problem that the step of filling and sealing the dispersion medium is complicated and time-consuming. Further, when the filling amount of the dispersion medium is large, the leakage of the dispersion medium occurs. On the contrary, when the filling amount is small, voids are generated in the partitioned area. Therefore, it is necessary to precisely control the filling amount, which causes a problem of poor yield.

Further, an electro-optical device using an electro-optical material such as liquid crystal, charged particles (electrophoretic particles), and a self-luminous material is used with a structure in which the electro-optical material is filled between a pair of opposing substrates. Therefore, as described above, when a plurality of partition regions partitioned by partition walls are provided between the substrates and the partition regions are filled with the electro-optical material, the partition regions are filled with the electro-optical material. Was there. Therefore, there is a problem that the process of filling and sealing the electro-optical material is complicated and time-consuming.

Therefore, the present invention has been made in view of the above problems. That is, the manufacturing process is simple, and a method for manufacturing an electro-optical device and an electrophoretic display device that can realize a reduction in process time, a reduction in yield, and a reduction in manufacturing cost are provided.
This manufacturing method is provided to provide an electro-optical device, an electrophoretic display device, and an electronic device having excellent characteristics.

[0009]

That is, a method of manufacturing an electro-optical device according to the present invention comprises the steps of encapsulating an electro-optical substance containing a polymerizable substance between a pair of substrates, and polymerizing the polymerizable substance. Dividing the region in which the electro-optical material is enclosed into a plurality of regions.

By adopting such a method for manufacturing an electro-optical device of the present invention, the electro-optical material is encapsulated and then the polymerizable substance is polymerized to form the compartments. Therefore, the electro-optical material is encapsulated in each compartment area. Even if it does not, there is an advantage that the enclosing work can be performed at once. According to the manufacturing method of the present invention, it is possible to use the so-called vacuum injection method or the like for the above reason. That is, a sealing member is provided between the pair of substrates to form an electro-optical material enclosed region, and a part of the sealing member is opened to serve as an injection port. Then, after the inlet is immersed in the liquid electro-optical material under vacuum or reduced pressure condition, the electro-optical material is sealed between the substrates by setting the pressure condition higher than the vacuum or reduced pressure condition. Therefore, the manufacturing process can be simplified and the time required for the process can be shortened. Further, since there is no work of filling the electro-optical material into each partitioned region, it is not necessary to precisely control the filling amount in each partitioned region, the yield can be significantly reduced, and the manufacturing cost can be reduced.

As the polymerizable substance, it is preferable to use a polymerizable monomer or a polymer precursor, and it is preferable to employ a photopolymerizable substance, for example, a polymer substance which exhibits a polymerization reaction by ultraviolet rays. When a photopolymerizable polymer substance is used, at least one of the pair of substrates is made light-transmissive, and light is irradiated through the substrate. Styrene, methyl methacrylate, vinyl acetate, or the like may be used as the polymerizable monomer or polymer precursor.
The partition material formed of these substances has excellent chemical resistance, is stable to the electro-optical material, and can realize excellent heat resistance, environmental resistance, strength, and elasticity.

Employing a photopolymerizable polymeric material facilitates compartmentalization with high accuracy. This is because the polymerizable substance can be polymerized by performing the exposure through a mask in which the partition portions are selectively opened. Of course, the present invention can be carried out by using thermal polymerization in addition to photopolymerization, but in the case of making fine divisions, it is preferable to use photopolymerization because the irradiation position can be easily controlled.

An electro-optical device according to the present invention includes the electro-optical device manufactured by any one of the methods described above, and the electro-optical device has a plurality of display units.
At least one display unit is included in the partitioned area. In particular, it is preferable that the display units include a plurality of display units corresponding to each of a plurality of colors, and the plurality of display units be divided for each color.

According to the present invention, since the division is made for each display unit of different colors, it becomes possible to prevent the color mixture. At this time, if the partitioning material for partitioning has a light absorbing property, the partitioning material functions as a black mask, so that a secondary effect of improving the contrast can be obtained. For example, in a dot matrix type electro-optical device for full color display, R (red), G (green), B
One pixel is formed by setting three display units of (blue) or C (cyan), Y (yellow), and M (magenta) as one set. In that case, it is possible to prevent color mixture in the pixel by partitioning each display unit. still,
It goes without saying that the present invention can be applied to, for example, an electro-optical device that performs so-called icon display in which a display unit is provided for each character, other than the above dot-matrix electro-optical device.

Further, it is characterized in that a plurality of display units are included in the partitioned area. When all adjacent display units are display units of different colors, it is desirable to partition each display unit as described above, but if not, for example, when performing monochrome display or when adjacent display units are In the case of the same color, one display area may include a plurality of display units.

Further, the display electrode for driving the electro-optical material and a wiring for supplying a signal to the display electrode are provided, and the display electrode is partitioned in a region overlapping with the wiring in plan view. . By thus partitioning the wiring, that is, outside the display area, the area of the display area can be increased.

Further, a switching element connected to the wiring is further provided, and the switching element is partitioned in a region overlapping with the switching element in plan view. As the switching element, a TFT (thin film transistor),
Alternatively, a TFD element (thin film diode) can be used. With such a configuration, the switching element is covered with the partitioning material, so that it is possible to prevent malfunction of the element due to entry of light.

Further, an electronic apparatus of the present invention is equipped with the electro-optical device described in any one of the above.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] [Electro-Optical Device] As an electro-optical device of the present embodiment, an electrophoretic display device shown below is an active matrix type display device using a TFT (Thin-film Transistor) element as a switching element. Is. FIG. 1 is a sectional view of an electrophoretic display device according to an embodiment of the present invention. It should be noted that in the following drawings, in order to make the drawings easier to see, the ratios of dimensions, film thicknesses, etc. of the respective constituent members are changed and described, which does not match the actual situation. The element substrate 1 on which the display electrodes 4 are formed and the counter substrate 2 on which the common electrode 3 is formed face each other so that their electrode forming surfaces face each other with a constant space therebetween. A plurality of partitioned areas is provided, and the partitioned area is filled with a dispersion medium 5 of charged particles, which is an electro-optical material. Here, the counter substrate 2 and the common electrode 3 are light transmissive, and an observer can observe the display image from the counter substrate side. A color filter 6 having colored layers of different colors of red (R), green (G), and blue (B) is formed on the counter substrate 2, and a common electrode 3 is formed on the color filter 6. The common electrode 3 is ITO
It is formed of a transparent conductive film such as (Indium Tin Oxide).

The partition wall 8 is styrene which is a polymerizable monomer,
It is formed by polymerizing methyl methacrylate and vinyl acetate. The dispersion medium used is one in which charged particles are dispersed in an insulating solvent dodecylbenzene. As the charged particles, a mixture of white charged particles of titanium oxide having a positive charge and black charged particles of carbon having a negative charge is used. The primary particle size of titanium oxide is 0.2
Is about 0.4 μm, and the primary particle diameter of carbon is 10 to 80 nm. Carbon exists as secondary particles (about 100 nm to 1.5 μm) in which some primary particles are aggregated. When a voltage is applied to the electrodes, the white charged particles and the black charged particles are attracted to the electrodes having opposite polarities. Therefore, depending on the direction of the applied voltage, the black-and-white charged particles are arranged on the substrate provided with electrodes so as to face each other, and can be used as a display device having excellent contrast.

FIG. 2 shows a plurality of display electrodes 4, TFT elements 7, data lines 20a, scanning lines 21a and the like arranged in a matrix which form an image display area of the electrophoretic display device of this embodiment. In the display device according to the present embodiment, the display electrodes 4 as transparent conductive layers and the TFTs for controlling energization to the display electrodes 4 are provided in the plurality of display units arranged in a matrix forming the image display area. The data lines 2 to which the elements 7 are respectively formed and to which the image signal is supplied
0a is electrically connected to the source of the TFT element 7. The image signal to be written in the data line 20a is supplied line-sequentially or a plurality of adjacent data lines 20.
It is supplied to a for each group.

Further, the scanning line 21a is electrically connected to the gate of the TFT element 7, and the scanning signal is pulse-wise line-sequentially supplied to the plurality of scanning lines 21a at a predetermined timing. The display electrode 4 is electrically connected to the drain of the TFT element 7, and the image signal supplied from the data line 20a is written at a predetermined timing by turning on the TFT element 7 for a certain period. Display electrode 4
The image signal of the predetermined level written in is held for a certain period with the common electrode 3 described later. The charged particles having an electric charge are attracted to the electrode of the display electrode 4 and the common electrode 3 which has a polarity opposite to that of the charged particles and enables gradation display by comparing the color of the charged particles and the color of the dispersion medium.

As shown in FIG. 2, a plurality of display electrodes 4 are provided in a matrix on the element substrate, and data lines 20a and scanning lines 21a are provided along the vertical and horizontal boundaries of the display electrodes 4, respectively. ing. In the present embodiment, the display area formed in the area surrounded by the data lines 20a and the scanning lines 21a is a display unit (dot), and display can be performed for each display unit arranged in a matrix. It is structured.

As shown by the hatched portion in FIG. 2, the partition wall 8 is a wiring such as a data line 20a, a scanning line 21a, and a TFT.
It is formed so as to overlap the element 7 in a plane. In addition, as shown in FIG. 1, the partition wall 8 is a display electrode that divides the display unit of each color formed corresponding to each color of red (R), green (G), and blue (B) of the color filter. It is formed between four.

[Method of Manufacturing Electro-Optical Device] As an embodiment of the method of manufacturing the electro-optical device of the present invention, a method of manufacturing an electrophoretic display device using a photopolymerizable monomer will be described with reference to FIGS.
Shown in. White toner particles of titanium oxide having a positive charge as charged particles, black charged particles of carbon having a negative charge, and dodecylbenzene as an insulating solvent are mixed, and a dispersion medium containing the charged particles (electro-optical material) And To the dispersion medium containing the charged particles, styrene, methyl methacrylate, and vinyl acetate are added as photopolymerizable monomers to obtain an electro-optical material containing photopolymerizable monomers. As shown in FIG. 3, wirings such as the data lines 20a and the display electrodes 4 are formed on the element substrate 1 in advance, and the color filter 6 and the common electrode 3 are formed on the counter substrate 2. These element substrates 1
And the counter substrate 2 are opposed to each other with a constant space therebetween, and they are bonded to each other via a sealing material to form a pair of substrates.

A vacuum state is established between a pair of substrates bonded together via this sealing material, and then the injection port provided in the sealing material is dipped in an electro-optical material containing a photopolymerizable monomer, and a capillary phenomenon is applied. An electro-optical material containing a photopolymerizable monomer is injected. This injection method is used for injecting liquid crystal in a liquid crystal display device and can be easily injected. Then, the injection port is closed and sealed. Thus, in the present invention,
The work of injecting and sealing the electro-optical material is easy and can be performed in a short time.

Next, as shown in FIG. 4, on the side of the counter substrate 2 provided with the light-transmissive common electrode 3 serving as a display surface, a photomask 9 having selectively opened divisional portions is provided, and ultraviolet rays 1
Irradiate 0 to expose the section. By using the photopolymerizable monomer in this manner, the partition wall 8 can be formed by exposure, whereby the partition wall 8 can be easily formed in a predetermined pattern with high dimensional accuracy in a short time. The electro-optical device of this embodiment is completed through the above steps.

In the present embodiment, it is not necessary to inject the electro-optical material into each of the partitioned regions formed by the partition walls, the process of injecting and sealing the electro-optical material can be simplified, and the time required for the process can be shortened. Further, the yield and the manufacturing cost can be significantly reduced. In addition, the electro-optical device according to the present exemplary embodiment is similar to FIG.
As shown in FIG. 5, the partition wall 8 is formed at the boundary between the display electrodes 4 which are the display areas, and the partition area formed by the partition walls 8 is configured to have a one-to-one correspondence with the display electrode 4 which is the display area. It As a result, the display area and the partitioned area can be associated with each other, and excellent display quality can be realized. In particular, it is possible to prevent color mixing between colors in full-color display. Further, when the partition wall 8 is formed at the boundary between the display electrodes 4,
It is possible to minimize the decrease in the aperture ratio due to the line width of the partition wall 8. Further, when the background of the display surface is black, by making the partition wall 8 black, the partition wall 8 can also serve as the black matrix 6m, and the step of forming the black matrix 6m can be simplified or omitted. Similarly, when the background is white, the partition wall 8
The white matrix can be used as a white matrix.

In the electro-optical device of this embodiment, as shown in FIG. 1, on the element substrate 1, the data lines 20a, the scanning lines 21a, and the switching elements corresponding to the intersections of the data lines 20a and the scanning lines 21a. TFT element 7, which functions as
A display electrode 4 connected to the TFT element 7 is provided. Since no electric field is generated not only at the boundary between the adjacent display electrodes 4 but also at the data line 20a and the scanning line 21a,
The arrangement of the electro-optical material is disturbed. Therefore, by providing the partition walls 8 so as to overlap the data lines 20a, the scanning lines 21a, and the TFT elements 7 in plan view, it is possible to eliminate the disorder of the arrangement and realize a high-quality image display.

Further, in the electro-optical device according to the present embodiment, the partition area partitioned by the partition wall is 5 mm × 5 mm or less, preferably 1 mm × 1 mm or less, which makes it possible to obtain a specific gravity even when two or more electro-optical materials are used. It is possible to realize a display surface in which the electro-optic material is uniformly dispersed over the entire surface without separation of the electro-optic material. In addition, the partition wall has 10
Since the area is less than or equal to%, the influence on the display characteristics of the partition wall can be almost eliminated.

In the method of manufacturing the electro-optical device according to the present embodiment, since the polymerizable monomer is polymerized to form the partition wall, a partition wall excellent in binding property with the substrate is formed without forming a gap between the substrate and the partition wall. Can be formed. Therefore, partition walls having a line width of 10 μm or less can be formed, and the aperture ratio can be improved and the partition region can be miniaturized. Further, since the polymerizable monomer used is smaller than the primary particle diameter of the charged particles which is an electro-optical material, when the polymerizable monomer is polymerized, the charged particles are not taken in, and after the partition wall is formed by the polymerization, the charged particles are Concentration does not fluctuate. Therefore, it is possible to manufacture an electro-optical device having a constant display characteristic and reduce the yield.

Further, in this embodiment, since the photopolymerizable monomer is used, the monomer can be polymerized by exposure, and the partition wall can be easily formed in a short time with high accuracy. In particular, in the present embodiment, the photopolymerizable monomers styrene, methyl methacrylate, and vinyl acetate are used, and they have chemical resistance to a dispersion medium containing charged particles, which is an electro-optical material, and react with the dispersion medium. Without
Deterioration does not occur. It also has excellent compatibility,
The step of mixing with a dispersion medium containing charged particles and the step of injecting between the substrates can be easily performed.

The charged particles may be colored and the insulating solvent may be colorless, or the charged particles may be white and the insulating solvent may be colored. Generally, white particles and / or black particles are widely used as the charged particles, but examples of the charged particles include zinc white, barium sulfate, titanium oxide, chromium oxide, calcium carbonate, gypsum, lead white, and manganese violet. , Carbon black, iron black, navy blue, ultramarine, phthalocyanine blue, chrome yellow, cadmium yellow, lithopone, molybdate orange, fast yellow, benzimidazoline yellow, flavans yellow, naphthol yellow, benzimidazolone orange, perinone orange,
Red iron oxide, cadmium red, Madareki, naphthol red, dioxazine violet, phthalocyanine blue, alkali blue, cerulean blue, emerald green, phthalocyanine green, pigment green, cobalt green, aniline black and the like can be used. These materials are appropriately subjected to appropriate treatment, dispersed in an insulating solvent, and used as a dispersion medium containing charged particles. As the insulating solvent, a polar solvent such as a water-based solvent or an alcohol-based solvent may be used depending on the charged particles, but a benzene-based non-polar solution is generally preferable in terms of compatibility and characteristics. Is. Further, a mixed solution of a low boiling point solvent and a high boiling point solvent may be used. When used by coloring, a soluble dye or the like may be dissolved.

A light transmissive substrate is used for at least one of the element substrate 1 and the counter substrate 2 (viewing side). The material, thickness, dimensions and the like are not particularly limited and can be appropriately determined depending on the purpose and application. For example, by using a flexible polymer material for the substrate, it can be applied to electronic paper or the like. A spherical spacer may be provided between the substrates depending on the purpose and application.

The partition wall 8 is a circular close packing as shown in FIG.
A pattern such as a hexagonal honeycomb arrangement or a triangular close packing may be used. At this time, in the case of full-color display, as shown in FIG. 6, by making the pattern of the color filter correspond to the pattern of the partition wall provided, it is possible to make the pixels correspond to the divided regions, and realize excellent display quality. it can. 6A shows a mosaic type array, FIG. 6B shows a triangle type array, FIG. 6C shows a vertical stripe type array, and FIG. 6D shows a 4-pixel arrangement type array. The color filter pattern corresponds to the partition pattern. A desired display quality can be realized by appropriately selecting

As the polymerizable monomer or polymer precursor to form the partition walls 8, for example, compounds capable of conducting polymerization such as photopolymerization, thermal polymerization, polycondensation, addition polymerization and orientation polymerization can be used, and they can be used alone or in combination of two or more kinds. It doesn't matter. Also the refractive index,
Since the display characteristics of the electrophoretic display device are also influenced by the dielectric constant, the hue, etc., it is preferable to appropriately determine the characteristics, purpose, and use of the dispersion medium used.

Further, a polymer binder, a polymerization initiator, a plasticizer, a stabilizer, a coloring agent, an adhesion promoter, a polymerization inhibitor, etc. may be added and used depending on the purpose and application. It is preferable to use a compound having chemical resistance to the electro-optical material used and excellent compatibility. Further, the refractive index, the dielectric constant, the hue, and the like affect the display characteristics of the electro-optical device, and thus are preferably determined appropriately according to the characteristics of the electro-optical material used, the purpose, and the application.

In the method of manufacturing the electro-optical device according to the present embodiment, in the exposure step of forming the partition wall by exposure, ultraviolet rays, X-rays, etc. can be used as light, and the wavelength, intensity, irradiation time, etc.
It can be appropriately determined according to the characteristics of the polymerizable monomer used. The light irradiation in the exposure step can be performed by irradiating light to a local portion with, for example, a laser without using a photomask. The light irradiation is not limited to the display surface side,
For example, if a transparent substrate is used as the substrate, the exposure can be performed even if the substrate is provided with data lines and scanning lines.

Further, in this embodiment, the polymerization step may be carried out twice or more. For example, after the first polymerization, the entire surface or a predetermined pattern is exposed to light, and the unreacted residual polymerizable monomer is polymerized on the surfaces of the element substrate 1, the counter substrate 2, and the partition walls 8 to fix the same. Unreacted components in the electro-optical material can be removed. The remaining unreacted component is accompanied by an increase in the viscosity of the electro-optical material and causes deterioration of characteristics such as a decrease in responsiveness of the electro-optical material. Therefore, by performing the polymerization step twice or more and removing the remaining unreacted portion, the characteristic deterioration of the electro-optical material can be suppressed.

Further, the polymerizable monomer is not limited to photopolymerization,
For example, compounds capable of conducting polymerization such as thermal polymerization, polycondensation, addition polymerization, orientation polymerization and the like can be used, and they may be used alone or in combination of two or more kinds. When a heat-polymerizable monomer is used, for example, a target position may be irradiated with microwaves, far infrared rays, laser, etc., or ultrasonic waves may be applied to give frictional heat, or direct heat may be applied. Thus, the polymerizable monomer can be polymerized to form a predetermined partition wall.

[Second Embodiment] FIG. 7 is a sectional view of an electrophoretic display device according to the present embodiment. The electrophoretic display device according to the present embodiment is different from the electrophoretic display device according to the first embodiment in two points. One is a data line 20c and a TFT that planarly overlap the partition wall 8 as shown in FIG. Element 7c,
That is, the data lines 20u and the TFT elements 7u that do not overlap the partition are alternately arranged in the longitudinal direction of the scanning line 21a. Therefore, the partition area partitioned by the partition wall 8 includes two display electrodes 4 (display units) adjacent to each other in the longitudinal direction of the scanning line 21a. Another difference is that
This means that there is no color filter and the image is displayed in black and white.

The manufacturing method of this embodiment is the same as that of the first embodiment, and its explanation is omitted. In the present embodiment, it is not necessary to inject the electro-optical material into each partitioned region formed by the partition wall, the step of injecting and sealing the electro-optical material can be simplified, the time required for the step can be shortened, and the yield can be further increased. It is possible to obtain the same effect as that of the first embodiment that the manufacturing cost can be significantly reduced. Furthermore, this embodiment is the first
Unlike the above embodiment, there is no color filter, the structure is simple, and the manufacturing process can be simplified. In addition, the size of the partition region partitioned by the partition wall can be increased, and thus the aperture ratio can be increased. Further, since the size of the partition region can be increased, it is not necessary to precisely form fine partition walls when the partition walls are formed by polymerization, and the work of forming the partition walls is simplified. However, in the present embodiment, since the TFT element that does not overlap the partition in plan view cannot be shielded by the partition, it is desirable to separately provide a light shielding film or the like above the TFT element to shield the light.

Next, examples of the electronic apparatus of the present invention including the electro-optical device of the present invention will be described. [Electronic Paper] An example in which the electro-optical device according to the above-described embodiment is applied to a display unit of electronic paper will be described. FIG. 9 is a perspective view showing the configuration of this electronic paper. In FIG. 9, the electronic paper 30 is a main body 32 made of a rewritable sheet having the same texture and flexibility as paper.
And a display unit including the electro-optical device 31 described above. FIG. 10 is a perspective view showing the structure of the electronic notebook. In FIG. 10, the electronic notebook 33
Is a bundle of a plurality of electronic papers 30 shown in FIG.
It is sandwiched between the covers 34. Further, the electronic notebook 33 can change the display content of the electronic paper 30 in the bundled state by providing the cover 34 with the display data input means.

[Electronic Book] Next, an example in which the electro-optical device according to the above-described embodiment is applied to an electronic book will be described. FIG. 11 is a perspective view showing the configuration of this electronic book. In FIG. 11, reference numeral 35 indicates an electronic book. The electronic book 35 has a book-shaped frame 36.
The frame 36 has an openable / closable cover 37. The frame 36 is provided with a display device 38 including the above-described electro-optical device in a state where the display surface is exposed on the surface thereof, and further, an operation unit 39 is provided.

The technical scope of the present invention is not limited to the above-mentioned embodiment, and for example, as an electro-optical material,
A self-luminous material such as a fluorescent substance, organic electroluminescence, inorganic electroluminescence, or a self-luminous material, or a liquid crystal can be used. Therefore, a display using a self-luminous material as an electro-optical device in which the electro-optical material is filled between a pair of substrates. Examples of the device include a device and a liquid crystal display device.

As electronic equipment, in addition to the electronic paper of FIG. 9, the electronic notebook of FIG. 10 and the electronic book of FIG. 11, personal computers, mobile phones, digital still cameras, liquid crystal televisions, viewfinder types, monitors. Direct-view video tape recorder, car navigation system, pager, electronic organizer, calculator, word processor,
Examples thereof include workstations, videophones, POS terminals, devices equipped with a touch panel, and the like. Needless to say, the above-described electro-optical device can be applied as the display unit of these various electronic devices.

[0047]

As described above, according to the method of manufacturing the electro-optical device of the present invention, the step of enclosing the electro-optical material containing the polymerizable monomer and the step of polymerizing the polymerizable monomer to form the partition wall. By including the above, it is not necessary to inject the electro-optical material into each of the partitioned regions formed by the partition walls, the step of injecting and sealing the electro-optical material can be simplified, and the time required for the step can be shortened. Further, the yield and the manufacturing cost can be significantly reduced. Further, the partition wall has excellent binding property to the substrate, the line width of the partition wall can be narrowed, the aperture ratio can be improved, and the partitioned area can be miniaturized. Further, the manufacturing method of the present invention can provide an electro-optical device and an electronic device that are inexpensive and have excellent display characteristics.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an example of an electro-optical device according to a first embodiment of the invention.

FIG. 2 is a schematic configuration diagram of an element substrate showing an example of the electro-optical device according to the first embodiment of the invention.

FIG. 3 is a schematic cross-sectional view showing an example of a method for manufacturing an electro-optical device of the present invention.

FIG. 4 is a schematic cross-sectional view showing an example of a method for manufacturing an electro-optical device of the present invention.

FIG. 5 is a schematic configuration diagram of an element substrate showing an example of the electro-optical device of the invention.

FIG. 6 is a diagram showing an array pattern of red (R), green (G), and blue (B) of color filters, (a) is a mosaic type, (b) is a triangle type, and (c) is a stripe type. , (D) are diagrams showing a 4-pixel arrangement type.

FIG. 7 is a schematic sectional view showing an example of an electro-optical device according to a second embodiment of the invention.

FIG. 8 is a schematic configuration diagram of an element substrate showing an example of an electro-optical device according to a second embodiment of the invention.

FIG. 9 is a perspective view showing a configuration of electronic paper which is an example of the electronic apparatus of the invention.

FIG. 10 is a perspective view showing a configuration of an electronic notebook which is an example of the electronic apparatus of the invention.

FIG. 11 is a perspective view showing a configuration of an electronic book which is an example of the electronic apparatus of the invention.

[Explanation of symbols]

1. ． ． Element substrate 2. ． ． Counter substrate 3. ． ． Light-transmissive common electrode 4. ． ． Display electrode 5. ． ． Dispersion medium containing charged particles 6. ． ． Color filter 6r, 6g, 6b. ． ． Each dye layer of color filter 6 m. ． ． Black matrix 7. ． ． TFT element 7c. ． ． TFT element that overlaps the partition 7u. ． ． TFT element that does not overlap the partition 8. ． ． Partition 9. ． ． Photo mask 10. ． ． UV rays 20a. ． ． Data line 20b. ． ． Source line 20c. ． ． Data line that overlaps the bulkhead 20u. ． ． Data line that does not overlap with partition wall 21a. ． ． Scan line 22. ． ． Semiconductor film 23. ． ． Gate insulation film 24. ． ． Base protection film 30. ． ． Electronic paper 31. ． ． Electro-optical device 32. ． ． Main body made of rewritable sheet 33. ． ． Electronic notebook 34. ． ． cover 35. ． ． E-book 36. ． ． flame 37. ． ． Openable cover 38. ． ． Display device composed of electro-optical device 39. ． ． Operation part

Claims (12)

[Claims] 1. A method of manufacturing an electro-optical device, the step of encapsulating an electro-optical substance containing a polymerizable substance between a pair of substrates, and a region in which the electro-optical substance is encapsulated by polymerizing the polymerizable substance. And a step of partitioning into a plurality of regions. 2. The method of manufacturing an electro-optical device according to claim 1, wherein the polymerizable substance is selected from a polymerizable monomer and a polymer precursor. 3. The method for manufacturing an electro-optical device according to claim 1, wherein the polymerizable substance is a photopolymerizable substance, and at least one of the pair of substrates is light transmissive. And the step of polymerizing the polymerizable substance comprises irradiating light through at least the one substrate. 4. The method of manufacturing an electro-optical device according to claim 3, wherein light is selectively applied to the sectioned portion. 5. The electro-optical device according to claim 1, wherein the electro-optical material includes a dispersion medium and electrophoretic particles. 6. The electro-optical device according to claim 5, wherein the electrophoretic particles are larger than the polymerizable monomer and the polymer precursor. 7. An electro-optical device manufactured by the method according to claim 1, wherein the electro-optical device has a plurality of display units, and the electro-optical device has a plurality of display units. An electro-optical device, wherein the display device includes at least one display unit. 8. The electro-optical device according to claim 7, wherein the plurality of display units corresponding to each of a plurality of colors are included, and the plurality of display units are divided for each color. Optical device. 9. The electro-optical device according to claim 7, wherein a plurality of display units are included in the partitioned area. 10. The electro-optical device according to claim 7, further comprising a display electrode for driving the electro-optical material, and a wiring for supplying a signal to the display electrode. The electro-optical device, wherein the electro-optical device is partitioned in a region that overlaps the wiring in plan view. 11. The electro-optical device according to claim 10, further comprising a switching element connected to the wiring, wherein the switching element is partitioned in a region overlapping with the switching element in a plan view. apparatus. 12. An electronic device comprising a display unit, wherein the electro-optical device according to claim 7 is mounted as the display unit.