Display device

Abstract

To provide, in a device that performs display by applying an electric field to charged material, a structure for reducing after-images and a manufacturing method therefor.SOLUTION: A display device comprises a plurality of pixel electrodes and a charged layer (layer including a charged substance) provided on the pixel electrodes. In end parts of the adjacent two pixel electrodes of the plurality of pixel electrodes, one end has a concave part in an end face direction and the other end has a convex part in the end face direction, and the concave part and convex part form a pair to form a gap between the two pixel electrodes.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technical field relates to a display device and a driving method thereof, and also to a manufacturing method of a display device. . [Background technology]

[0002] In recent years, with the advancement of digital technology, textual and image information from newspapers, magazines, etc. has been converted into electronic data. This type of electronic data is generally available on television, personal computers, etc. The image is displayed on a display device provided in a personal computer or a portable electronic terminal, The contents are viewed.

[0003] As a display device with high visibility equivalent to that of paper, electronic inks such as electrophoretic elements are being developed. Display devices using electronic ink are being developed. One example is one that has microcapsules between the base electrode and the counter electrode. A voltage is applied to move the colored particles present in the microcapsules in the direction of the electric field. The display is performed in this way (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2008-276153 Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned Patent Document 1 has a problem in that an afterimage occurs when switching the displayed image.

[0006] One of the reasons for this is that, as shown in FIG. 13(A), the edge 5003 of the pixel electrode 5001 When the end 5003 is linear, As shown in FIG. 13(B), an electric field is correctly applied in the gap 5005 between the pixel electrodes. There is a possibility that the image may not be recorded properly, which will result in an afterimage. If so, the display speed will be slow.

[0007] In view of the above problems, the objective is to improve the performance of display devices, including reducing afterimages. It shall be one. [Means for solving the problem]

[0008] The display device disclosed in this specification is a device that displays a picture by applying an electric field to a charged substance. The liquid crystal display device has a plurality of pixel electrodes, and the ends of two adjacent pixel electrodes are partially or entirely linear. By not applying a voltage to the charged substance in the gap between the pixel electrodes, an electric field is applied correctly. .

[0009] One aspect of the present invention is a liquid crystal display device comprising: a plurality of pixel electrodes; and a charging layer (containing a charging substance) provided on the pixel electrodes. The edges of two adjacent pixel electrodes among the plurality of pixel electrodes are It is a display device having a portion that is bent in the surface direction (also called a bent portion). The edge direction refers to the direction parallel to the upper surface of the pixel electrode. The shape may have a vertex (also called a bent shape), or it may have no vertex (a curved shape). The bent portions of the two pixel electrodes may be , preferably interdigitated with each other.

[0010] Another aspect of the present invention is a liquid crystal display device including a plurality of pixel electrodes and a charging layer provided on the pixel electrodes, Between two adjacent pixel electrodes among the plurality of pixel electrodes, the end of one pixel electrode is The pixel electrode has a concave portion (or a concave-convex portion) in the surface direction, and the end portion of the other pixel electrode has a convex portion (or a concave-convex portion) in the end surface direction. The concave portion (or the concave and convex portion) of one pixel electrode and the convex portion (or the concave and convex portion) of the other pixel electrode are This is a display device in which a gap is formed between the two pixel electrodes by pairing the first electrode and the second electrode. In this specification, a pair of a recess and a protrusion (or a pair of concave and convex portions) means that the protrusion is This state is also expressed as the recessed and protruding parts interlocking with each other. It may be manifested.

[0011] Another aspect of the present invention is a liquid crystal display device including a plurality of pixel electrodes and a charging layer provided on the pixel electrodes, A gap is formed between two adjacent pixel electrodes among the plurality of pixel electrodes, and the gap is three The distance between the two points is equal to the distance between the two points. When connected by , it is a display device that has one or more vertices.

[0012] Another aspect of the present invention is a liquid crystal display device including a plurality of pixel electrodes and a charging layer provided on the pixel electrodes, Between two adjacent pixel electrodes among the plurality of pixel electrodes, the ends of the two pixel electrodes are The gap has three or more equally spaced portions. It is a display device.

[0013] Another aspect of the present invention is a liquid crystal display device including a plurality of pixel electrodes and a charging layer provided on the pixel electrodes, The end of the right side of one of the plurality of pixel electrodes and the adjacent pixel electrode on the right side of the one pixel electrode The left edge of the pixel electrode is bent and a gap is formed between the left edge and the top edge of the pixel electrode. The end of the pixel electrode and the end of the lower side of the adjacent pixel electrode are bent at the upper side of the pixel electrode, and A gap is formed, and the gap is formed at the right side of the one pixel electrode and the upper side of the one pixel electrode. The gap in this case refers to a display device having two or more equally spaced portions. [Effects of the Invention]

[0014] This can improve the performance of the display device, such as reducing afterimages. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 illustrates an example of a display device. [Figure 2] FIG. 1 illustrates an example of a display device. [Figure 3] FIG. 1 illustrates an example of a display device. [Figure 4] FIG. 1 illustrates an example of a display device. [Figure 5] FIG. 1 illustrates an example of a display device. [Figure 6] FIG. 1 illustrates an example of a display device. [Figure 7] FIG. 1 illustrates an example of a display device. [Figure 8] FIG. 1 illustrates an example of a display device. [Figure 9] FIG. 1 illustrates an example of a display device. [Figure 10] FIG. 1 illustrates an example of a display device. [Figure 11] FIG. 1 illustrates an example of a display device. [Figure 12] 1A and 1B are diagrams illustrating examples of electronic devices. [Figure 13] FIG. 1 is a diagram showing an example of a conventional display device. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following describes the embodiments in detail with reference to the drawings. The present invention can be implemented in many different ways without departing from the spirit and scope thereof. It will be readily understood by those skilled in the art that various modifications can be made to the modes and details. Therefore, the present invention should not be construed as being limited to the description of the following embodiments. In all drawings for explaining the configuration, the same parts or parts having similar functions are denoted by the same reference numerals. The following numbers are used and their repeated explanations will be omitted.

[0017] (Embodiment 1) In this embodiment, an example of the structure of a display device will be described.

[0018] FIG. 1 is a top view of a pixel portion of a display device. Note that FIG. 1 shows only a part of the pixel portion. .

[0019] The pixel section has a plurality of pixels, each of which has a pixel electrode 101. One aspect of the present invention is characterized in that part or all of the edge of the pixel electrode 101 is not linear. That is, the end of the pixel electrode 101 is bent in the end surface direction at a portion 103. It may also have a linear portion 105. The bent portions 103 and 104 of the two pixel electrodes 101 are interdigitated with each other. It is preferable that

[0020] Here, detailed conditions for the structure of the pixel electrode 101 will be described with reference to FIGS. 2 to 3, which are enlarged views of FIG. 5 will be used to explain.

[0021] First, condition 1 will be explained. Between two adjacent pixel electrodes, the edge of one pixel electrode has a recess in the end surface direction, and the end of the other pixel electrode has a protrusion in the end surface direction. The recessed portion of one pixel electrode and the protruding portion of the other pixel electrode are paired, and a gap is formed between the two pixel electrodes. In addition, uneven portions (also called concave and convex portions) are formed at the ends of the two pixel electrodes. The concave-convex portions of one pixel electrode and the concave-convex portions of the other pixel electrode may be paired.

[0022] A specific example of condition 1 is shown in FIG. 2. The pixel electrode 201 has a recess 211 and a protrusion 213. The pixel electrode 203 has a recess 215 and a protrusion 217. The protrusion 211 and the protrusion 217 of the pixel electrode 203 are paired, and the protrusion 213 of the pixel electrode 201 and the The concave portions 215 of the pixel electrode 203 are paired with the concave portions 215 of the pixel electrode 201. The uneven portion of the pixel electrode 203 is paired with the uneven portion of the pixel electrode 201, and a gap 219 is formed between the two pixel electrodes 201 and 203. By applying condition 1, the protruding portion 103 of the pixel electrode in FIG. is formed.

[0023] Another condition 2 will be explained. A gap is formed between two adjacent pixel electrodes, The gap has three or more equally spaced portions. , when the midpoints of each interval are connected by a line segment, there are one or more vertices. This means that the midpoints of each interval in the section are not aligned on a straight line.

[0024] A specific example of condition 2 is shown in FIG. 3. A gap 2 is formed between two adjacent pixel electrodes 201 and 203. 19 is formed, and the gap 219 is formed by three equally spaced portions 301, 303, 305 If the midpoints of the three intervals are connected by a line segment, a single vertex 307 is formed. By applying condition 2, the protruding portion 103 of the pixel electrode shown in FIG. will be done.

[0025] Another condition 3 will be explained. Between two adjacent pixel electrodes, The ends of the bent portion are bent together and form gaps. The gaps are formed at three or more locations. In particular, the distance between the two pixel electrodes is equal to or greater than half of one side of the two pixel electrodes. are preferably equal.

[0026] A specific example of condition 3 is shown in FIG. 4. are both bent, forming a gap 219. The gaps 219 are equal in size. By applying condition 3, the protruding portions of the pixel electrodes in FIG. Portion 103 is formed.

[0027] Next, another condition 4 will be explained. The end of the right side of one pixel electrode and the adjacent pixel on the right side The left end of the pixel electrode is bent, and a gap is formed between the both ends. The edge of the upper side of one pixel electrode and the edge of the lower side of the adjacent pixel electrode are bent at the upper side. A gap is formed between both ends of the pixel electrode. The gap on the upper side has two or more equally spaced portions.

[0028] A specific example of condition 4 is shown in FIG. The left end 502 of each of the three is bent, forming a gap 219. The upper edge 503 of the pixel electrode 201 and the lower edge 504 of the pixel electrode 205 are both bent. The gap 219 and the gap 221 are formed at two locations. The distances between the two portions are equal, 505 and 507. By applying condition 4, the distances between the two portions in FIG. A protruding portion 103 of the pixel electrode is formed.

[0029] In the above, "equal intervals" includes cases where the intervals are roughly equal, taking into account errors. Let's say.

[0030] The effects achieved by applying the above-described pixel electrode structure will be described below.

[0031] FIG. 6 is a cross-sectional view of the pixel portion shown in FIG. 1, showing three pixels. As an example, a microcapsule electrophoresis method is used.

[0032] Each pixel is made up of a pixel electrode 603, a counter electrode 605, and a pair of the pixel electrode 603 and the counter electrode 605. A display element 601 having a charged layer 606 (also called a layer having a charged substance) provided between the In addition, the pixel adjacent to one pixel has a pixel electrode 60 adjacent to the pixel electrode 603. 9, a display element 601 having a counter electrode 605 and a charging layer 606.

[0033] The charged layer 606 has a plurality of microcapsules 607. 607 has colored particles 623, 625. The particles 623, 625 are charged particles. It functions as:

[0034] A gap 611 is formed between the pixel electrode 603 and the pixel electrode 609 .

[0035] The pixel electrodes 603 and 609 use the pixel electrode structure shown in FIGS. Therefore, when looking at the gap 611 in FIG. 6 in the depth direction of the paper, the pixel electrode 603 protrudes. 1 or the protruding portion 613 in FIG. This falls under Section 213, etc.

[0036] In this state, when a voltage is applied between the pixel electrodes 603 and 609 and the counter electrode 605, the arrow An electric field is generated as shown in 615.

[0037] An electric field is also generated in the protruding portion 613 of the pixel electrode 603, so that the gap 6 In the case of a part or all of the particle 11, an electric field can be applied correctly to the particles 623 and 625. Therefore, the afterimage that occurs in the gap 5005 in the conventional example shown in FIG. It is possible.

[0038] The gap 611 is the gap between the pixel electrode 603 and the counter electrode 605 (cell gap). It is preferable that the gap is narrower than the gap (also called gap).

[0039] An example of the charged layer 606 will be described in detail below.

[0040] The electrostatic layer 606 includes a plurality of microcapsules 607 and a resin 617. The capsules 607 are dispersed and fixed in a resin 617. The resin 617 is a binder and It has the function of

[0041] The resin 617 may be light-transmitting. Instead of the resin 617, air or an inert gas may be used. In this case, either or both of the pixel electrode 603 and the counter electrode 605 may be filled with any gas. On the other hand, it is preferable to form a layer containing a pressure sensitive adhesive or adhesive agent to fix the microcapsules 607. stomach.

[0042] The microcapsule 607 includes a membrane 619, a liquid 621, particles 623, and particles 625. The liquid 621, the particles 623, and the particles 625 are encapsulated in the membrane 619. The film 619 has light-transmitting properties. Note that the cross-sectional shape of the microcapsule 607 is not limited to a circular shape. The shape is not limited to this, and may be an ellipse or a shape with projections and recesses.

[0043] The liquid 621 functions as a dispersion liquid. The liquid 625 can be dispersed in the film 619. The liquid 621 has light-transmitting properties and is It is preferably colored.

[0044] The particles 623 and 625 are different in color. For example, one is black and the other is white. The particle 623 and the particle 625 are preferably white in color. For example, one is positively charged and the other is negatively charged. This generates a potential difference between the pixel electrode 603 and the counter electrode 605. As a result, the particles 623 and 625 move in accordance with the direction of the electric field. The gradation can be controlled by changing the reflectance of 601.

[0045] The structure of the microcapsules 607 is not limited to the above. For example, the liquid 621 is The color of the particles may be not only white and black, but also red, green, blue, etc. Choose from colors such as cyan, magenta, yellow, emerald green, and vermilion The number of types of color of particles may be one or three or more. .

[0046] The display element 601 is not limited to a microcapsule type, but may be a microcup type, a horizontal Moving type, vertical moving type, twist ball type (spherical or cylindrical, etc.), powder moving type, electronic liquid powder (registered trademark) type, charged toner, electrowetting method, electrochromism method The charging layer 606 has a This refers to all elements that can display information by the movement of charged particles or other charged substances.

[0047] When the display screen is viewed from the counter electrode 605 side, the counter electrode 605 has a light-transmitting property. The light-transmitting material is, for example, indium tin oxide (ITO ), indium tin oxide with silicon oxide (ITSO), organoindium, organotin, oxide Zinc (ZnO), indium zinc oxide (IZO), zinc oxide containing gallium, tin oxide (SnO2), indium oxide with tungsten oxide, indium oxide with tungsten oxide Indium zinc oxide, indium oxide with titanium oxide, indium tin oxide with titanium oxide Oxides and the like can be used.

[0048] In this case, the pixel electrode 603 is made of the above-mentioned light-transmitting material or a metal material. In particular, metal materials with low reflectivity for visible light or materials with high absorptivity for visible light can be used. It is preferable to form the pixel electrode 603 using a highly insulating metal material. As a metal with low reflectivity, it is difficult for reflection to occur, improving visibility of the display screen. For example, chromium can be used.

[0049] The display screen may be viewed from the pixel electrode 603 side. In this case, the pixel electrode 603 The light-transmitting material is used.

[0050] In this case, the counter electrode 605 is formed using a metal having a lower reflectance than the pixel electrode 603. It is preferable to use the above-mentioned metals with low reflectance.

[0051] The display screen may be viewed from both the counter electrode 605 side and the pixel electrode 603 side. In this case, both the counter electrode 605 and the pixel electrode 603 are made of the above-mentioned light-transmitting material. In order to prevent light from passing through to the opposite side, the counter electrode 605 side and the pixel electrode 6 It is preferable to arrange a polarizing plate on the O3 side in a crossed Nicol configuration.

[0052] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0053] (Embodiment 2) In this embodiment, an example of a pixel electrode structure different from that shown in FIG. 1 will be shown.

[0054] 7A to 7D are top views of a pixel portion of a display device. D) shows a part of the pixel area.

[0055] In FIG. 7A, the pixel portion has a pixel electrode 701. The edge of the pixel electrode 701 is It has a rectangular protruding portion in the surface direction.

[0056] In FIG. 7B, the pixel portion has a pixel electrode 703. The edge of the pixel electrode 703 is It has a trapezoidal protruding portion in the surface direction.

[0057] In FIG. 7C, the pixel portion has a pixel electrode 705. The edge of the pixel electrode 705 is It has a triangular protruding portion in the surface direction.

[0058] 7(D), the pixel portion has a pixel electrode 707. The right end of the pixel electrode 707 The pixel electrode 707 has a triangular protruding portion in the end surface direction. The portion has a protruding portion in the end face direction.

[0059] 7A to 7D, the structure shown in the first embodiment can be used. By satisfying any one of the conditions 1 to 4, two adjacent An electric field can be applied to the gap between pixel electrodes. can be reduced.

[0060] In addition, a plurality of structures among those shown in FIGS. 1, 7(A), 7(B), 7(C), and 7(D) may be used. may be combined.

[0061] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0062] (Embodiment 3) In this embodiment, an example of the structure of a display device will be described.

[0063] FIG. 8 shows an example of a pixel circuit and a driving circuit. FIG. 8(B) shows an active matrix type display device. The display element 601 is provided in a plurality of pixels 801 arranged in the same manner.

[0064] The structure and driving method of the display element can be achieved by applying the structure of the display element shown in the above embodiment mode. This can be done.

[0065] In the passive matrix type shown in FIG. 8A, a pixel 801 is formed by a plurality of intersecting wirings 80. 3, 805, and a display element 601 electrically connected to the intersecting wirings 803, 805. The wiring 803 is electrically connected to a driver circuit 811, and the wiring 805 is electrically connected to a driver circuit 812. The display element 601 is electrically connected to the driver circuit 811 and the circuit 813. Gray scale display is performed in accordance with the potential input from the driver circuit 813 .

[0066] In the active matrix type shown in FIG. 8B, the pixel 801 has a plurality of intersecting The wirings 803 and 805, the transistor 807, the display element 601, and the capacitor 809 are The gate of the transistor 807 is electrically connected to the wiring 805, and the source Alternatively, one of the source and drain is electrically connected to the wiring 803, and the other of the source and drain is The element 601 and the capacitor 809 are electrically connected to the wiring 803. The wiring 805 is electrically connected to a drive circuit 813 . The transistor 807 is turned on or off depending on a potential input from the driver circuit 813. The display element 601 is controlled by the driving circuit when the transistor 807 is conductive. Gray scale display is performed in accordance with a potential input from 811. Note that the capacitor element 809 is a display element. It has the function of maintaining the voltage applied to the element 601.

[0067] Next, the cross-sectional structure of the pixel portion is shown.

[0068] FIG. 9A shows a cross-sectional structure of a passive matrix type. The display element 601 is disposed between the substrate 901 and the pixel electrodes 603 and 609. By extending in a direction perpendicular to the surface, a plurality of wirings 803 shown in FIG. 8(A) are formed. Therefore, at the end of the plurality of wirings 803 that become the pixel electrodes 603 and 609, It is sufficient to satisfy any one of conditions 1 to 3. On the other hand, on the opposing substrate 903 side, By providing the electrodes 605 in a direction parallel to the paper surface, the plurality of wirings 80 shown in FIG. 9A shows only one counter electrode 605, A plurality of counter electrodes 605 are parallel to the paper surface. A display element 601 is formed at the intersection of several wires 805 .

[0069] 9B shows a cross-sectional structure of an active matrix type. A layer including a transistor 807 and a capacitor 809 is disposed between the display element 601 and the display element 601. The transistor 807 and the capacitor 809 are electrically connected to the pixel electrode 603. Although omitted in FIG. 9B, the pixel electrode 609 is also connected to a transistor. The resistor and the capacitance element are electrically connected.

[0070] The substrate 901 and the opposing substrate 903 may be a glass substrate, a resin substrate, a semiconductor substrate, a metal substrate, or The insulating film such as a nitride film or an oxide film may be provided on the insulating film.

[0071] The transistor 807 is a thin film transistor with a bottom gate structure. The insulating film 913, the electrode 915, the electrode 917, and the semiconductor layer 919 are included. 911 is a gate electrode. Also, an insulating film 913 is a gate insulating film. One of the electrodes 15 and 917 functions as a source electrode and the other as a drain electrode.

[0072] The capacitor 809 includes an electrode 921, an electrode 917, and an insulating film 913. The electrode 921 is a lower electrode of the capacitor element 809 and is the same as the electrode 911 (the gate electrode). The insulating film 913 is a conductive layer formed on the gate insulating film and the capacitor element 80. The electrode 917 is formed on the insulating film 913 and serves as a dielectric material. The conductive layer is a layer that is connected to one of the source electrode and the drain electrode and the upper electrode of the capacitor element 809. It also serves as a

[0073] The electrodes 911, 921, 915, and 917 are made of molybdenum, titanium, or titanium. Metallic materials such as aluminum, tungsten, aluminum, copper, neodymium, scandium, etc. The conductive layer is formed by using an alloy material containing these as a main component, and is a single layer or a multilayer.

[0074] The insulating film 913 is formed as a single layer or a stacked layer using a silicon oxide film, a silicon nitride film, or the like. do.

[0075] The semiconductor layer 919 is formed of an amorphous semiconductor, a polycrystalline semiconductor, a single crystal semiconductor, or a microcrystalline semiconductor. The semiconductor material can be silicon, germanium, An organic semiconductor, an oxide semiconductor, or the like can be used. It is also possible to use a channel-etched type or a channel-stop type transistor. It may be a thin film transistor or a top gate structure. A transistor using a conductive substrate (also called a bulk transistor) may also be used.

[0076] The transistor 807 has a single drain structure and an LDD (lightly doped drain) structure. Various structures such as a gate overlap drain structure can be applied.

[0077] An insulating film is provided between the transistor 807 and the pixel electrode 603, and between the capacitor element 809 and the pixel electrode 603. 923 is formed.

[0078] The insulating film 923 is made of an inorganic material such as silicon oxide or silicon nitride, polyimide, polyamide, Organic materials such as benzocyclobutene, acrylic, or epoxy, or siloxane materials, etc. It is formed as a single layer or a laminate using the above.

[0079] In addition, a color filter (CF) may be provided on the substrate 901 side or the opposing substrate 903 side. A configuration in which a black matrix (BM) is provided may be appropriately adopted. CF and BM may be provided on both the side of the counter substrate 903 and the side of the counter substrate 904.

[0080] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0081] (Fourth embodiment) In this embodiment mode, an example of a manufacturing method of a display device will be described. The structures described in the above embodiment modes can be used as appropriate.

[0082] First, a method for manufacturing a passive matrix display device will be described with reference to FIG.

[0083] On the substrate 901, the wiring that will become the pixel electrodes 603 and 609 is formed so as to extend in the direction perpendicular to the paper surface. Here, the pixel electrodes 603 and 609 are formed by depositing a conductive film that will become the pixel electrodes. Thereafter, etching or the like is carried out to process the substrate so as to satisfy any one of the above conditions 1 to 3.

[0084] Next, a charging layer 606 (also called a layer having a charging substance) is formed on the pixel electrodes 603 and 609. For example, microcapsules 607 are dispersed on the pixel electrodes 603 and 609. A fixed resin 617 is provided.

[0085] Next, on the resin 617 (on the charging layer 606), the opposing Wiring is formed to become the electrode 605. The resin 617 on which the counter electrode 605 has been formed is , may be provided on the pixel electrodes 603 and 609.

[0086] Next, a counter substrate 903 is provided on the counter electrode 605. The counter substrate 903 is provided with a sealing material. The substrate 901 is bonded to the substrate 901 using the adhesive.

[0087] The opposing substrate 903 on which the opposing electrode 605 is formed is separated from the substrate 901 by using a sealing material. They may also be pasted together.

[0088] Also, if you use an electronic liquid powder type instead of a microcapsule type, you can use a positively charged color The pixel electrode 60 is provided with a polymer particle and a negatively charged polymer particle of a different color. 3 and the counter electrode 605. A display element can also be configured using the same.

[0089] In this manner, a passive matrix display device can be manufactured.

[0090] Next, an example of a manufacturing method of an active matrix type will be described with reference to FIG. The same steps as those for the positive matrix type will be omitted.

[0091] A transistor 807 and a capacitor 809 are formed over a substrate 901 .

[0092] An insulating film 923 is formed over the transistor 807 and the capacitor 809 .

[0093] The pixel electrodes 603 and 609 are formed on the insulating film 923. 9 is a method for forming a conductive film that will become the pixel electrode, and then etching or the like is performed under the above conditions 1 to 3. The data is processed to satisfy one of the four conditions.

[0094] Next, a charging layer 606 (also called a layer having a charging substance) is formed on the pixel electrodes 603 and 609. For example, microcapsules 607 are dispersed on the pixel electrodes 603 and 609. A fixed resin 617 is provided.

[0095] Subsequently, the counter electrode 605 is formed on the resin 617 (on the charging layer 606). The resin 617 on which the counter electrode 605 is formed may be provided on the pixel electrodes 603 and 609 .

[0096] Next, a counter substrate 903 is provided on the counter electrode 605. The counter substrate 903 is provided with a sealing material. The substrate 901 is bonded to the substrate 901 using the adhesive.

[0097] The opposing substrate 903 on which the opposing electrode 605 is formed is separated from the substrate 901 by using a sealing material. They may also be pasted together.

[0098] In this manner, an active matrix display device can be manufactured.

[0099] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0100] (Embodiment 5) In this embodiment mode, an example of a manufacturing method of a display device, which is different from that in Embodiment Mode 4, will be described. Note that the materials, structures, and the like shown in the above embodiment modes can be used as appropriate.

[0101] First, a peeling layer 931 is formed over a substrate 901 (see FIG. 10A).

[0102] The release layer 931 may be made of tungsten, molybdenum, titanium, tantalum, niobium, nickel, Cobalt, zirconium, zinc, ruthenium, rhodium, palladium, osmium, iridium The insulating film can be formed by using a material such as aluminum or silicon, in a single layer or a stacked layer. It may be formed by using an alloy material containing these elements as the main component, or a material containing these elements as the main component. These materials may be used to form the insulating layer 11 by sputtering, plating, or the like. A peeling layer 931 is formed with a thickness of 30 nm to 200 nm by the CVD method, coating method, printing method, etc. It can be achieved.

[0103] In addition, an insulating film (silicon nitride film or silicon oxide film) that functions as a buffer layer is formed on the peeling layer 931. By providing the insulating film, a thin film can be formed on the surface of the peeling layer 931 in a later peeling step. This makes it easier to peel off the adhesive.

[0104] Next, pixel electrodes 603 and 609 are formed on the peeling layer 931. , 609, after forming a conductive film to be the pixel electrode, etching or the like is performed, and 3. The material is processed so as to satisfy any one of the conditions 1 to 4.

[0105] An insulating film 933 is formed on the pixel electrodes 603 and 609. The insulating film 933 is made of silicon oxide. Inorganic materials such as silicon or silicon nitride, polyimide, polyamide, benzocyclobutene, acrylic Alternatively, the insulating layer 10 is formed in a single layer or a multilayer using an organic material such as epoxy, a siloxane material, or the like. These materials are used in a variety of processes, including CVD, sputtering, SOG, droplet ejection, and screen printing. The insulating film 933 can be formed by the above method.

[0106] Then, the transistor 807 and the capacitor 809 are formed over the insulating film 933. The transistor 807 and the capacitor 809 are electrically connected to the pixel electrode 603. In FIG. 10A, the transistor and the capacitor electrically connected to the pixel electrode 609 are It has been omitted.

[0107] Next, a part of the insulating film 933 provided on the edge of the substrate 901 is removed by etching or the like. After that, an insulating film 935 is formed to cover the transistor 807 and the capacitor 809. 935 functions as a barrier layer and is a nitrogen-containing layer (silicon nitride, silicon nitride oxide, silicon oxynitride The layer can be formed using a layer including a metal or a metal oxide.

[0108] Next, the insulating film 935 is irradiated with laser light to form a groove 937 (see FIG. 10(B)). Then, a separate film 939 is provided so as to cover at least the groove 937 (FIG. 1 (See 0(C)).

[0109] Next, a first organic resin 941 is formed on the insulating film 935. By providing the groove 937, the first organic resin 941 penetrates into the groove 937 and adheres to the release layer 931. The first organic resin 941 functions as a substrate (also called a support substrate). It works.

[0110] Next, the element layer 943 is removed from the surface of the peeling layer 931 along the groove 937. After peeling, the separation film 93 is peeled off from the plate 901 (see FIG. 10(D)). Remove the 9.

[0111] Next, a charging layer 606 ( A layer having a charged substance is formed (see FIG. 10E). The 943 is used upside down.

[0112] Then, a second organic resin 945 on which a counter electrode 605 is formed is provided on the charging layer 606. Then, a heat treatment is performed to bond the first organic resin 941 and the second organic resin 945 together. The second organic resin 945 functions as a counter substrate.

[0113] The order of forming the charging layer 606, the counter electrode 605, and the counter substrate is the same as in the above embodiment. You can do it similarly.

[0114] The first organic resin 941 and the second organic resin 945 are epoxy resin, unsaturated polyester resin, etc. Heat-resistant resins such as ster resin, polyimide resin, bismaleimide triazine resin, or cyanate resin Curable resins can be used. Other resins include polyphenylene oxide resin and polyether Thermoplastic resins such as imide resins or fluororesins may also be used. Flexible displays can be fabricated.

[0115] It is also possible to manufacture a passive matrix display device by applying the above manufacturing method. can.

[0116] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0117] (Sixth embodiment) In this embodiment, the positional relationship between the pixel electrodes and other wirings will be described.

[0118] FIG. 11 shows the pixel electrodes shown in FIGS. 1 to 6 and the wirings 803 and 805 shown in FIG. This is an example of the positional relationship between the

[0119] In FIG. 11, the pixel electrode 201 and the wirings 803 and 805 overlap each other. The wiring 803 does not overlap the gap 950 , and the wiring 805 does not overlap the gap 960 .

[0120] By adopting such a positional relationship, the potential of the wiring 803 in the gap 950 is reduced. This prevents the electric field from being applied to the charged material, thereby reducing the afterimage in the gap 950. Cut.

[0121] Similarly, in the gap 960, an electric field caused by the potential of the wiring 805 is applied to the charged material. Therefore, the afterimage in the gap 960 can be reduced.

[0122] This embodiment mode can be implemented in appropriate combination with other embodiment modes.

[0123] (Embodiment 7) In this embodiment, an example of an electronic device will be described.

[0124] 12(A) and 12(B) are diagrams showing electronic paper (also called electronic books, e-books, etc.). The display unit 4101 of the main body 4001 and the display unit 4102 of the main body 4002 are respectively The display device disclosed in this specification can be applied.

[0125] In addition to electronic paper, televisions (Fig. 12(C)), mobile phones (Fig. 12(D)), and In the personal computer of Fig. 2(E) or the electronic device such as the game machine of Fig. 12(F), The display units 4103 to 4106 of the main bodies 4003 to 4006 are provided with the display device disclosed in this specification. can be applied.

[0126] This embodiment mode can be implemented in appropriate combination with other embodiment modes. [Explanation of symbols]

[0127] 101 pixel electrode 103 parts 104 parts 105 parts 211 recess 215 recess 213 Convex 217 Convex 201 Pixel electrode 203 Pixel electrode 205 pixel electrode 219 Gap 221 Gap 301 parts 303 parts 305 parts 307 Vertex 401 End 403 End 501 End 502 End 503 End 504 End 505 parts 507 parts 601 Display element 603 Pixel electrode 605 Counter electrode 606 Charged Layer 607 Microcapsules 609 Pixel electrode 611 Gap 613 parts 615 Arrow 617 Resin 619 Membrane 621 Liquid 623 particles 625 particles 701 Pixel electrode 703 Pixel electrode 705 pixel electrode 707 Pixel electrode 801 pixels 803 Wiring 805 Wiring 807 Transistor 809 Capacitor 811 Drive circuit 813 Drive Circuit 901 Circuit Board 903 Opposing substrate 911 Electrode 915 Electrode 917 Electrode 921 Electrode 913 Insulating film 923 Insulating Film 919 Semiconductor layer 931 Peeling layer 933 Insulating Film 935 Insulating Film 937 Groove 939 Separate Film 941 First Organic Resin 943 Element Layer 945 Second Organic Resin 950 gap 960 Gap 4001~4006 Main unit 4101~4106 Display section 5001 Pixel electrode 5003 End 5005 Gap

Claims

[Claim 1] a plurality of pixel electrodes; and a charging layer provided on the pixel electrodes; an end portion of a right side of one of the plurality of pixel electrodes and an end portion of a left side of an adjacent pixel electrode on the right side of the one pixel electrode are bent to form a gap, an end of an upper side of the one pixel electrode and an end of a lower side of an adjacent pixel electrode at the upper side of the one pixel electrode are bent to form a gap; A display device characterized in that the gap at the right side of the one pixel electrode and the gap at the top side of the one pixel electrode have equal intervals at two or more locations.

Images