JP2004020640A - Electrooptical device, electronic appliance equipped with the electrooptical device, and method for manufacturing electrooptical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize an electrophoresis display device with high contrast. <P>SOLUTION: The electrophoresis display device is equipped with a first substrate, a second substrate opposed to the first substrate 1, an electrooptical layer 20 disposed between the first and second substrates 1, 2 and partition walls dividing the electrooptical layer into a plurality of regions, and widths of the partition walls get narrower as going from one substrate out of the first and second substrates 1, 2 to the other substrate. The partition wall 4 is allowed to have a stable structure by widening a joint part between the first substrate 1 and the partition wall 4. In the electrophoresis display device, contrast of a surface of the electrooptical layer 20 on the display surface side is viewed, so that the display is not adversely affected even when the width of the partition wall 4 on the first substrate 1 side is large. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[0001] 1. Field of the Invention [0002] The present invention relates to an electro-optical device, a method of manufacturing the same, and electronic equipment. In particular, the present invention relates to a technique which can be suitably applied to an electrophoretic device using a dispersion system in which electrophoretic particles are dispersed in a liquid dispersion medium as an electro-optical layer.
[0002]
2. Description of the Related Art In an electrophoretic display device, a dispersion system in which electrophoretic particles are dispersed in a liquid dispersion medium is sealed between a pair of opposed substrates at least one of which is made of a transparent material. By controlling the polarity so that the electrophoretic particles in the dispersion are adsorbed or separated on the transparent electrode plate side in accordance with the polarity, a desired character, symbol, graphic, or the like can be displayed.
[0003]
An advantage of the electrophoretic display device is that since the contrast of the surface of the dispersion system is observed, there is no hue change due to parallax unlike a liquid crystal display, and uniform visibility can be obtained from any angle.
[0004]
However, electrophoretic displays also have some disadvantages in principle, one of which is the aggregation and sedimentation of electrophoretic particles. This disadvantage can be avoided by providing a partition between pixels, for example.
[0005]
[Problems to be solved by the invention]
In an electrophoretic display device, a high contrast can be obtained by maintaining a sufficient cell thickness. Therefore, as a structure of a partition provided in an electrophoretic display device having high contrast, a height corresponding to a cell thickness and a narrow width which does not affect visibility are required. Therefore, the partition is required to have a very unstable structure, and its formation is not easy.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, an electro-optical device according to the present invention includes a first substrate, a second substrate facing the first substrate, and a first substrate and a second substrate disposed between the first substrate and the second substrate. An electro-optic layer provided, a partition bonded to the first substrate and the second substrate, and a partition for dividing the electro-optic layer into a plurality of regions, wherein the first substrate and the partition Is characterized in that the area of the junction is different from the area of the junction between the second substrate and the partition. Alternatively, a first substrate, a second substrate facing the first substrate, an electro-optical layer provided between the first substrate and the second substrate, and the electro-optical layer And a partition that divides the partition into a plurality of regions, wherein the width of the partition decreases from one of the first substrate and the second substrate toward the other.
[0007]
According to the above configuration, when the substrate on which the partition is to be formed is used as the formation substrate among the first substrate and the second substrate, when forming the partition, the width of the partition is set to the width of the formation substrate. By providing a structure in which the bonding portion side is wide and becomes narrower in a later step toward the side in contact with the other substrate, a partition wall that can be formed stably can be obtained. Further, when the structure of the partition is used for an element such as an electrophoretic display device that displays the contrast of the surface as a display, after the first and second substrates are bonded together, the partition is narrower and the area of the joint is smaller. When the substrate is placed on the display surface side, a display device in which the width of the partition does not affect the display can be obtained.
[0008]
In the above invention, the first and second substrates can be composed of a support base and electrodes. Glass or plastic, for example, resins such as polycarbonate, acrylic, polyimide, and polyester can be used as the supporting base. As the electrodes, oxides such as indium, tin, cadmium, and antimony, composite oxides such as ITO, metals such as gold, silver, copper, and nickel, and organic conductive materials such as polypyrrole and polythiophene can be used. These can be formed by a vapor deposition method, a sputtering method, a coating method or the like, and the thickness thereof is usually about 10 to 200 nm. The electrodes can be formed in a desired pattern, for example, in a matrix by a conventionally known means such as etching. In addition, since at least one of the first substrate and the second substrate needs to transmit light, it is preferable to use a transparent material among the above materials.
[0009]
Examples of the partition include resins such as polyester, polyethylene, polypropylene, polyethersulfone, polycarbonate, polymethacrylate, and polyacrylate. For example, a method of laminating a dry film resist on a substrate, overlaying a mask pattern on the dry film resist, exposing to light, and developing with a developer can be used for the partition. When laminating a dry film resist, the lamination may be repeated until a desired thickness is obtained. Further, it is preferable that the partition wall is stably present with respect to the material constituting the electro-optical layer in terms of solubility and the like. It is preferable that a seal region is formed around the partition pattern using the same material as the partition simultaneously with the formation of the partition. In a later step, the first substrate and the second substrate are bonded together by disposing an adhesive in the seal portion region.
[0010]
In the present invention, it is preferable that an insulating film is provided between at least one of the first substrate and the second substrate and the partition.
[0011]
In the above-described configuration, for example, in a display device including a positively or negatively charged charged material (electrophoretic particles in an electrophoretic display device) such as an electrophoretic display device, adhesion of the charged material to an electrode is prevented. Thus, it is possible to prevent the display from deteriorating.
[0012]
In the above invention, as the insulating film, an inorganic substance such as SiO ₂ or SiO, a resin similar to the material of the partition wall, or the like can be used. Also, polyimide or the like can be used. These can be formed by an evaporation method, a sputtering method, a coating method, or the like, and have a thickness of about 0.5 to 2.0 μm. In addition, since at least one of the first substrate and the second substrate needs to transmit light, it is preferable to use a transparent material among the above materials.
[0013]
In the present invention, it is preferable that a plurality of display units are provided in a screen, and the plurality of display units are separated by the partition. The display unit here means, for example, each dot in a dot matrix type display device, each character in the case of a character display type display device, or a plurality of dots in the case where a plurality of dots each having a different color such as RGB are formed. Each pixel, which is a group of dots, is shown. The partition does not necessarily need to be divided into one dot, one character, and one pixel. For example, a configuration in which a plurality of dots are included in one area partitioned by the partition may be possible.
[0014]
According to the above configuration, since the partition is provided between the display elements, it is advantageous in that the quality of an image due to the partition can be prevented from being deteriorated. Further, by providing the partition between the pixels, the wiring between the pixels is covered with the partition, so that it is possible to prevent a deterioration in display quality caused by complicated distribution of an electric field when a voltage is applied.
[0015]
In the present invention, it is preferable that the end of the partition is disposed inside the pixel electrode, and the end of the pixel electrode is covered with the partition.
[0016]
According to the above configuration, since the end of the pixel electrode is covered with the partition wall, it is possible to prevent the display quality from deteriorating due to the complicated distribution of the electric field when the voltage is applied.
[0017]
Further, in the present invention, a configuration is also possible in which the partition is formed on the element substrate side and the driving element is covered with the partition.
[0018]
According to the above configuration, it is possible to protect a driving element, such as a TFT, which generates a leak current by receiving light from external light.
[0019]
In the present invention, it is preferable that the electro-optical layer includes a plurality of positively or negatively charged particles and a medium in which the particles are dispersed. In such a case, the gap between the first substrate and the second substrate is preferably 10 μm to 100 μm, whereby good contrast characteristics can be obtained. Further, in this case, the width of the partition on the side having a large contact area with the substrate is preferably at least 0.8 times the gap between the first substrate and the second substrate. This is because the stability of the partition depends on the contact area between the partition and the gap between the first substrate and the second substrate. The width of the partition having the smaller contact area with the substrate is preferably 5.0 to 10 μm regardless of the gap between the first substrate and the second substrate. This is because it is preferable to arrange the side having a small contact area between the partition and the substrate on the display surface side, and it is necessary to make the width of the partition a dimension that does not affect the display.
[0020]
In the above configuration, the electro-optical device of the present invention takes the form of an electrophoretic display device. The plurality of positively or negatively charged particles and the medium in which the particles are dispersed are called an electrophoretic display liquid.
[0021]
The electrophoretic dispersion liquid can be composed of a plurality of positive or negatively charged electrophoretic particles and a dispersion medium in which the electrophoretic particles are dispersed. Further, a coloring agent or a surfactant can be added as required.
[0022]
Various inorganic and organic dielectrics can be widely used as the electrophoretic particles. As the inorganic substance, for example, oxides such as titanium oxide, silicon oxide, and aluminum oxide can be used. As the organic substance, each pigment or resin, for example, polystyrene, polyacrylate, polymethacrylate, or the like can be used. Further, it is preferable that the resin is insoluble in the dispersion medium. When resin electrophoretic particles are used, carbon black, various pigments, and dyes colored with dyes can be used as necessary. The shape of the electrophoretic particles is preferably spherical. In the case of a spherical shape, the contact between particles or the contact between the particles and the substrate becomes a point contact, and the adhesive force based on the intermolecular force between the particles and between the particles and the substrate is reduced, so that a dielectric film is formed inside the substrate. Even so, the charged particles can move smoothly by the electric field. The particle size of the electrophoretic particles is preferably from 0.1 μm to 5.0 μm. Within this range, the light scattering efficiency does not decrease, and a sufficient response speed can be obtained when a voltage is applied. When two or more types of electrophoretic particles are used, it is preferable that the particle diameters of the two or more types be substantially the same. According to this, it is possible to avoid a situation in which particles having a large particle size are surrounded by particles having a small particle size, and the original color density of the large particles is reduced.
[0023]
As the dispersion medium, aromatic hydrocarbons such as dodecylbenzene and xylene, paraffinic hydrocarbons such as hexane and cyclohexane, halogenated hydrocarbons such as trichloroethylene and tetrachloroethylene, and mixtures thereof can be used. Further, in order to prevent the floating and sedimentation of the electrophoretic particles, it is desirable that the specific gravity is substantially equal to that of the electrophoretic particles and the viscosity is low in terms of the mobility of the electrophoretic particles when a voltage is applied.
[0024]
Oil-soluble dyes such as oil red (5B, RR, OG), oil blue (613, 2N, BOS), oil green (502, BG), and oil black (HBB, 860, BS) can be used as the coloring agent. .
[0025]
Examples of the surfactant include anionic surfactants such as fatty acid salts and alkyl sulfates, cationic surfactants such as alkylamine salts and quaternary ammonium salts, amphoteric surfactants such as alkyl betaines and amine oxides. And nonionic surfactants such as polyoxyethylene alkyl ethers and polyoxyalkylenes. The amount of the surfactant added is about 0.5 to 1.0% by weight based on the total weight of the electrophoretic dispersion.
[0026]
Further, since the electrophoretic dispersion liquid preferably does not contain impurity ions, it is preferable that each material constituting the electrophoretic dispersion liquid is purified and used as necessary. Further, a material that does not generate ions when a voltage is applied is preferable.
[0027]
Further, the method of manufacturing an electro-optical device according to the present invention manufactures an electro-optical device in which an electro-optic layer is disposed between a first substrate and a second substrate, and the electro-optic layer is divided into a plurality of regions by partition walls. A method of forming the partition on the first substrate, and bonding the second substrate to the first substrate with the partition interposed therebetween, wherein the partition is separated from the first substrate by the first substrate. It is characterized in that it is formed so that its width decreases toward the two substrates. The method further includes a step of enclosing an electro-optical material including a plurality of positively or negatively charged particles and a medium in which the particles are dispersed, between the first substrate and the second substrate. And
[0028]
As a method of enclosing the electrophoretic dispersion liquid, for example, an inkjet method can be used. By using the inkjet method, a minute amount of the electrophoretic dispersion liquid can be filled accurately and at high speed. For example, when the area separated by the partition is 240 μm in length, 80 μm in width, and 50 μm in height, the volume is 960 picoliter. In the ink jet method, the discharge amount of less than 6 picoliters can be controlled, so that each region separated by the partition can be easily filled with the electrophoretic dispersion liquid.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0030]
(1st Embodiment)
FIG. 1 is an exploded perspective view showing a configuration of an electrophoretic display panel according to an embodiment of the present invention, and FIG. 2 is a partial sectional view thereof. As shown in FIG. 1 and FIG. 2, in the electrophoretic display panel A, a common electrode 5 is formed at a certain interval by a first substrate 1 on which a pixel electrode 3 is formed and a partition 4 having a certain height. The electrophoretic dispersion liquid 6 is sealed in the gap between the second substrate 2 and the second substrate 2. Here, the second substrate 2 and the common electrode 5 are made of a transparent material. The observer views the display image from the surface of the second substrate 2 where the common electrode 5 is not formed.
[0031]
In addition to the pixel electrode 3, a scanning line, a data line, and a thin film transistor (TFT) functioning as a switching element, which will be described later, are formed on the first substrate.
[0032]
The partition wall 4 is formed on the first substrate 1, and the partition wall width is configured to decrease toward the opposing second substrate 2. The partition 4 is formed so as to cover the edge of the pixel electrode 3 formed on the first substrate 1, the scanning line 7, and the data line 8.
[0033]
The electrophoretic dispersion liquid 6 is obtained by dispersing electrophoretic particles 10 in a dispersion medium 9. A surfactant is added to the electrophoretic dispersion 6 as needed.
[0034]
FIG. 3 is a partial cross-sectional view showing an example of an electrophoretic display panel having a partition structure not depending on the present invention. The partition 4 in FIG. 2 and the partition 4a in FIG. 3 provide the same visibility from the side where the common electrode 3 of the second substrate 2 which is the display surface is not formed. However, since the first substrate 1 side of the partition wall 4 in FIG. 2 is formed with a wide width, the contact area is large and has a more stable structure than the partition wall 4a in FIG. Since the electrophoretic display panel sees the contrast of the surface of the dispersion liquid 9, the width of the partition on the first substrate 1 side does not affect the visibility of the panel surface.
[0035]
Next, an outline of a method of manufacturing the electrophoretic panel according to the first embodiment will be described. FIG. 4 is a process chart for explaining a method of manufacturing an electrophoretic display panel.
[0036]
First, in a first step shown in FIG. 4A, a TFT 11, a pixel electrode 3, a plurality of scanning lines 7, and a plurality of data lines 8 are formed on a first substrate 1, and a scanning line driving circuit 16 and a data line are formed. The drive circuit 17 is formed at the same time. In the first step, a TFT manufacturing process in a liquid crystal display device can be used.
[0037]
Next, in a second step shown in FIG. 4B, a negative dry film resist 19 is formed into a film having a thickness of 50 μm by lamination, then exposed and developed with a developing solution to form the partition 4 on the first substrate 1. Form.
[0038]
Next, in a third step shown in FIG. 4 (C), the electrophoretic dispersion liquid 6 is filled into the respective regions 12 separated by the partition walls 4 using an ink jet type dispersion liquid filling apparatus.
[0039]
Next, in a fourth step shown in FIG. 4D, the second substrate 2 on which the common electrode 5 is formed is attached so that the common electrode 5 and the pixel electrode 3 face each other.
[0040]
Through the above steps, the electrophoretic display panel A can be manufactured.
[0041]
Next, the second step in the present embodiment will be described in detail. FIG. 5 is an explanatory diagram for describing the second step in the present embodiment in detail.
[0042]
First, in FIG. 5A, a dry film resist is formed to a thickness of 50 μm by lamination.
[0043]
Next, exposure is performed using a mask pattern 13 having a gray scale in FIG. The mask pattern includes a complete light-shielding portion 13b of chromium formed on quartz 13a and a semi-transmissive portion 13c of tantalum that can be designed to transmit ultraviolet rays up to 40%. Exposure through the semi-transmissive portion 13c enables a pattern having a tapered structure.
[0044]
Next, development is performed using an alkaline developer in FIG. A stable partition wall in contact with the substrate has a dimension width of 50 μm on the wide side of the partition wall and 10 μm on a narrow side of the partition wall.
[0045]
(Second embodiment)
Next, an electrophoretic display device according to a second embodiment will be described with reference to the drawings.
[0046]
FIG. 6 is a sectional view of the electrophoretic display panel according to the second embodiment. As shown in FIG. 5, the electrophoretic display panel B differs from the first embodiment in that an insulating film 14 is provided on the electrodes in the structure.
[0047]
Next, as a method of manufacturing the electrophoretic display panel B, a step of forming an insulating film 14 on the first substrate 1 after the first step in the first embodiment is added. Further, a step of forming the insulating film 14 on the common electrode 5 formed on the second substrate before the fourth step is added.
[0048]
(Third embodiment)
Next, an electrophoretic display device according to a third embodiment will be described with reference to the drawings.
[0049]
FIG. 7 is a sectional view of an electrophoretic display panel according to the third embodiment. As shown in FIG. 7, the electrophoretic display panel C is different from the previous embodiment in that the contact surface between the partition wall 15 and the first substrate 1 extends over the entire display area.
[0050]
Next, an outline of a method of manufacturing the electrophoretic display panel C will be described. FIG. 7 is a process chart for explaining a method of manufacturing the electrophoretic display panel C.
[0051]
First, in a first step shown in FIG. 7A, a TFT 11, a pixel electrode 3, a plurality of scanning lines 7 and a plurality of data lines 8 are formed on a first substrate 1, and a scanning line driving circuit 16 and a data line are formed. The drive circuit 17 is formed at the same time.
[0052]
Next, in a second step shown in FIG. 7B, a negative type dry film resist is formed into a film having a thickness of 50 μm by lamination, then exposed using a mask pattern including a gray scale, and developed with a developer to form a first resist. The partition 15 is formed on the substrate. At the time of development, the development time is shortened, and adjustment is performed so that the resist is left with a thickness of 0.5 to 2 μm other than the partition pattern portion in the display region.
[0053]
Next, in a third step shown in FIG. 7C, the electrophoretic dispersion liquid 6 is filled in each area 18 separated by the partition wall 15 using an ink jet type dispersion liquid filling apparatus.
[0054]
Next, in a fourth step shown in FIG. 7D, an insulating film 14 is formed on the second substrate 2 on which the common electrode 5 is formed.
[0055]
Next, in a fifth step shown in FIG. 7E, the common electrode 5 and the pixel electrode 3 on which the insulating film 14 is formed are attached to each other so as to face each other.
[0056]
Through the above steps, the electrophoretic display panel C can be manufactured.
[0057]
Next, the second step in the present embodiment will be described in detail. FIG. 7 is an explanatory diagram for describing the second step in the present embodiment in detail.
[0058]
First, in FIG. 8A, a dry film resist 19 is formed to a thickness of 50 μm by lamination.
[0059]
Next, exposure is performed using a Mac pattern 13 having a gray scale in FIG. The mask pattern includes a complete light-shielding portion 13b made of chrome on quartz 13a and a semi-transmissive portion 13c made of tantalum that can be designed to transmit ultraviolet rays up to 40%. Exposure through the semi-transmissive portion 13c enables a pattern having a tapered structure.
[0060]
Next, development is performed using an alkaline developer in FIG. At this time, the development time is shortened, and the resist is left in a thickness of 0.5 to 2 μm other than the partition pattern portion in the display area.
[0061]
(Fourth embodiment)
An example of an electronic apparatus provided with the electro-optical device manufactured by the manufacturing method of the present invention will be described below, but the application of the present invention is not limited to the example.
[0062]
<Mobile computer>
First, an example in which the display device including the electro-optical device according to the above-described embodiment is applied to a mobile personal computer (information processing device) will be described. FIG. 10 is a perspective view showing the configuration of the personal computer. In the figure, a personal computer 1100 includes a main body 1104 having a keyboard 1102, and a display device unit having the above-described display device 1106. Further, the inside of the personal computer includes many of the above-mentioned semiconductor integrated circuits not shown.
[0063]
<mobile phone>
Next, an example in which the electro-optical device according to the above-described embodiment is applied to a display unit of a mobile phone will be described. FIG. 11 is a perspective view showing the configuration of the mobile phone. In the figure, a mobile phone 1200 includes, in addition to a plurality of operation buttons 1202, an earpiece 1024, a mouthpiece 1206, the above-described display device 1208, and the above-described semiconductor integrated circuit (not shown).
[0064]
<Digital still camera>
A digital still camera using the electro-optical device according to the above-described embodiment as a finder will be described. FIG. 12 is a perspective view showing the configuration of the digital still camera, but also simply shows the connection with an external device.
[0065]
While an ordinary camera exposes a film with an optical image of a subject, the digital still camera 1300 photoelectrically converts the optical image of the subject with an image sensor such as a CCD (Charge Coupled Device) to generate an image signal. The display device 1304 described above is provided on the back of the case 1302 of the digital still camera 1300, and is configured to perform display based on an imaging signal from a CCD. Therefore, the display device 1304 functions as a finder that displays a subject. A light receiving unit including an optical lens, a CCD, and the like is provided on the observation side (the back side in the figure) of the case 1302.
[0066]
When the photographer confirms the image of the subject displayed on the display device 1304 and presses the shutter button 1308, the imaging signal of the CCD at that time is transferred and stored in the memory of the circuit board 1310. Further, the digital still camera 1300 includes a video signal output terminal 1312 and an input / output terminal 1314 for data communication on a side surface of the case 1302. As shown in the figure, a television monitor 1430 is connected to a video signal output terminal 1312, and a personal computer 1430 is connected to an input / output terminal 1314 for data communication as necessary. By this operation, the imaging signal stored in the memory of the circuit board 1308 is output to the television monitor 1330 and the computer 1340.
[0067]
As described above, complicated signal processing is performed in the digital still camera, and a plurality of the above-described semiconductor integrated circuits are included for the signal processing and image storage.
[0068]
<E-book>
FIG. 13 is a perspective view illustrating a configuration of an electronic book as an example of the electronic apparatus according to the invention. In the figure, reference numeral 1400 indicates an electronic book. The electronic book 1400 has a book-type frame 1402 and a cover 1403 that can be opened and closed on the frame 1402. The frame 1402 is provided with a display device 1404 with a display surface exposed on the surface thereof, and further provided with an operation unit 1405. The frame 1402 contains a plurality of the above-described semiconductor integrated circuits such as a controller, a counter, and a memory. In the present embodiment, the display device 1404 includes a pixel portion formed by filling a thin film element with electronic ink, and a peripheral circuit integrated with the pixel portion and integrated. The peripheral circuit includes a decoder-type scan driver and a data driver.
[0069]
In addition to the personal computer shown in FIG. 10, the digital still camera shown in FIG. 12, and the electronic book shown in FIG. 13, an electronic paper, a liquid crystal television, a viewfinder type, and a monitor Type video tape recorders, car navigation devices, pagers, electronic organizers, calculators, word processors, workstations, videophones, POS terminals, devices with touch panels, and the like. The display device described above can be applied to the display units of these various electronic devices.
[0070]
【The invention's effect】
According to the present invention, a stable structure can be given to the partition wall. When the structure of the partition is used in a display device in which the surface contrast is displayed as a display like an electrophoretic display device, an effect of not affecting the display can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a configuration of an electrophoretic display panel according to a first embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of the panel.
FIG. 3 is a partial cross-sectional view showing an example of an electrophoretic display panel having a partition structure not depending on the present invention.
FIG. 4 is an explanatory diagram for illustrating the method for manufacturing the electrophoretic display panel according to the first embodiment of the present invention.
FIG. 5 is an explanatory diagram for describing a second step of the manufacturing method in detail.
FIG. 6 is a sectional view showing a configuration of an electrophoretic display panel according to a second embodiment of the present invention.
FIG. 7 is a sectional view showing a configuration of an electrophoretic display panel according to a third embodiment of the present invention.
FIG. 8 is an explanatory view showing the method for manufacturing the panel.
FIG. 9 is an explanatory diagram for describing a second step of the manufacturing method in detail;
FIG. 10 is an explanatory diagram illustrating an example in which the electro-optical device according to the present invention is used in a portable personal computer.
FIG. 11 is an explanatory diagram illustrating an example in which the electro-optical device according to the invention is used in a mobile phone.
FIG. 12 is an explanatory diagram illustrating an example in which the electro-optical device according to the invention is used in a digital camera.
FIG. 13 is an explanatory diagram illustrating an example in which the electro-optical device according to the invention is used in an electronic book.
[Explanation of symbols]
1: First substrate 2: Second substrate 3: Pixel electrode 4, 4a: Partition wall 5: Common electrode 6: Electrophoretic dispersion liquid 7: Scan line 8: Data line 9: Dispersion medium 10: Electrophoretic particles 11: TFT
12: region separated by partition 13: mask pattern 13a: quartz 13b: complete light shielding portion 13c: semi-transmissive portion 14: insulating film 15: partition 16: scanning line drive circuit 17: data line drive circuit 18: separated by partition Area 19: dry film resist 20: inkjet head

Claims (13)

A first substrate, a second substrate facing the first substrate, an electro-optic layer provided between the first substrate and the second substrate, A partition which is joined to a second substrate and divides the electro-optical layer into a plurality of regions, wherein an area of a joint between the first substrate and the partition is larger than that of the second substrate and the partition. An electro-optical device, which is different from an area of a joining portion with the electro-optical device. The electro-optical device according to claim 1,
An electro-optical device, wherein an insulating film is provided between at least one of the first substrate and the second substrate and the partition. The electro-optical device according to claim 1,
An electro-optical device comprising a plurality of display units in a screen, wherein each of the plurality of display units is separated by the partition. The electro-optical device according to claim 1,
An electro-optical device having a structure in which an end of a partition is arranged inside a pixel electrode and an end of the pixel electrode is covered by the partition. The electro-optical device according to claim 1,
An electro-optical device having a structure including a partition wall formed using a black partition wall material. The electro-optical device according to claim 1,
An electro-optical device having a structure in which a partition is formed on an element substrate side and covers a driving element. The electro-optical device according to claim 1,
The electro-optical device according to claim 1, wherein the electro-optical layer includes a plurality of positively or negatively charged particles and a medium in which the particles are dispersed. The electro-optical device according to claim 1,
An electro-optical device, wherein the width of the partition wall on the wide side of the junction between the partition wall and the substrate is at least 0.8 times the gap between the first substrate and the second substrate on the side. . A first substrate, a second substrate facing the first substrate, an electro-optical layer provided between the first substrate and the second substrate, and a plurality of electro-optical layers. An electro-optical device, comprising: a partition that divides the partition into regions, wherein the width of the partition decreases from one of the first substrate and the second substrate toward the other. The electro-optical device according to claim 1,
An electro-optical device, wherein a gap between the first substrate and the second substrate is 10 μm or more and 100 μm or less. In an electronic apparatus including an electro-optical device as a display unit,
An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 10 as the display unit. An electro-optical layer is disposed between a first substrate and a second substrate, and the partition is formed on the first substrate in a method of manufacturing an electro-optical device in which the electro-optical layer is divided into a plurality of regions by partitions. And a step of bonding the second substrate to the first substrate with the partition interposed therebetween, wherein the partition has a width decreasing from the first substrate toward the second substrate. A method for manufacturing an electro-optical device, wherein The method for manufacturing an electro-optical device according to claim 12,
The method further comprises a step of enclosing a plurality of positively or negatively charged particles and an electro-optical material including a medium in which the particles are dispersed between the first substrate and the second substrate. Electro-optical device.

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