WO2017195466A1

WO2017195466A1 - Display device and electronic apparatus

Info

Publication number: WO2017195466A1
Application number: PCT/JP2017/011189
Authority: WO
Inventors: 由威石井
Original assignee: ソニー株式会社
Priority date: 2016-05-09
Filing date: 2017-03-21
Publication date: 2017-11-16
Also published as: JP2017203803A

Abstract

A display device in one embodiment of the present disclosure is provided with a first substrate having a display medium and a first connection part, and a second substrate having a wiring for controlling the drive of the display medium and a second connection part connected with the first connection part.

Description

Display device and electronic device

This disclosure relates to, for example, a display device and an electronic device that can be attached to and detached from interiors and clothing.

Generally, in a segment type display device, a display body and a wiring board are integrated like a display device described in Patent Document 1, for example.

JP 2007-206474 A

By the way, in recent years, the development of wearable devices that can be worn on the arm or installed on clothing has been promoted. In the wearable terminal, the display body is often provided on a flexible substrate, and is easily damaged by deformation of the substrate during use. A damaged display body needs to be repaired and replaced. However, in general display devices, the display body and the wiring board are integrated as described above. Replacement is required. For this reason, there is a demand for a display device with high maintainability in which only a damaged portion can be replaced.

It is desirable to provide display devices and electronic devices that can improve maintainability.

A display device according to an embodiment of the present disclosure includes a first substrate having a display body and a first connection portion, and a second connection portion connected to the first connection portion together with wiring for controlling driving of the display body. And a second substrate having.

An electronic apparatus according to an embodiment of the present disclosure includes the display device according to the embodiment of the present disclosure.

In the display device according to the embodiment of the present disclosure and the electronic apparatus according to the embodiment, the first connection portion is provided on the first substrate having the display body, and the second wiring for controlling the driving of the display body is provided. A second connection portion connected to the first connection portion is provided on the substrate. Thereby, the first substrate and the second substrate can be attached and detached.

According to the display device and the electronic device of the embodiment of the present disclosure, the first connection portion and the second connection portion that are connected to each other are provided on the first substrate and the second substrate, respectively. Therefore, it becomes possible to attach and detach the first substrate and the second substrate, and it is possible to improve the maintainability.

In addition, the effect described here is not necessarily limited, and may be any effect described in the present disclosure.

4 is a cross-sectional view illustrating an example of a configuration of a display device according to a first embodiment of the present disclosure. FIG. FIG. 2 is a schematic plan view of the electrophoretic element shown in FIG. 1. 12 is a cross-sectional view illustrating another example of the configuration of the display device according to the first embodiment of the present disclosure. FIG. FIG. 2 is a cross-sectional view for explaining the operation of the display device shown in FIG. 1. FIG. 2 is a cross-sectional view for explaining the operation of the display device shown in FIG. 1. It is sectional drawing showing the structure of the display apparatus which concerns on 2nd Embodiment of this indication. 14 is a cross-sectional view illustrating a configuration of a display device according to Modification 1 of the present disclosure. FIG. 14 is a cross-sectional view illustrating a configuration of a display device according to Modification 2 of the present disclosure. FIG. It is sectional drawing showing the structure of the display apparatus which concerns on 3rd Embodiment of this indication. It is a block diagram showing schematic structure of the electronic device of this indication. 12 is a perspective view illustrating an example of an appearance of application example 1. FIG. 12 is a perspective view illustrating another example of the appearance of application example 1. FIG. 14 is a diagram illustrating an example of an appearance of application example 2. FIG. 22 is a diagram illustrating another example of the appearance of application example 2. FIG. 12 is a perspective view illustrating an appearance of application example 3. FIG.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The description will be given in the following order.
1. First embodiment (an example in which a pair of connection portions each having a concave portion or a convex portion are provided on opposing substrates)
1-1. Configuration of display device 1-2. Operation of display device 1-3. Action / Effect 2nd Embodiment (example which provided the buffer member in the recessed part)
3. Modified example 3-1. Modification 1 (example in which a pair of connection portions are formed of conductive rubber)
3-2. Modification 2 (example in which a pair of connection portions are formed of magnets)
4). Third embodiment (example in which a substrate having elasticity is used for one substrate)
5). Application examples

<1. First Embodiment>
FIG. 1 illustrates a cross-sectional configuration of a display device (display device 1) according to a first embodiment of the present disclosure. The display device 1 is, for example, a 1 cm to several cm square display device, and one or a plurality of the display devices 1 are used for, for example, a clothing such as a wristwatch or a bag to be described later and a wall decoration. The display device 1 is an electrophoretic display using, for example, an electrophoretic element (electrophoretic element 30) that generates contrast using an electrophoretic phenomenon as a display body. FIG. 2 schematically shows a planar configuration of the electrophoretic element 30. The display device 1 has a configuration in which a display body device 10 including an electrophoretic element 30 and a wiring substrate 40 provided with a wiring 42 that controls driving of the electrophoretic element 30 are separately formed. In the present embodiment, a pair of connection portions (for example, connection portion 15 (first connection portion) and A connecting portion 44 (second connecting portion) is provided. In the display device 1, the display device 10 can be detached from the wiring board 40 by the pair of connection portions. FIG. 1 schematically shows the configuration of the display device 1 and may differ from actual dimensions and shapes.

(1-1. Configuration of display device)
The display device 1 includes the display body device 10 connected by a pair of connection portions (the connection portion 15 and the connection portion 44 and the connection portion 25 and the connection portion 46), and the wiring board 40. The display device 10 includes a support substrate 11 having a lower electrode 12 and a counter substrate 21 having an upper electrode 22 arranged to face each other via an electrophoretic element 30 and has a display surface on the counter substrate 21 side. is doing. This “having a display surface on the counter substrate 21 side” means that an image is displayed toward the counter substrate 21 side (the user can visually recognize the image from the counter substrate 21 side). The display device 10 is provided with a connection portion 15 electrically connected to the lower electrode 12 and a connection portion 25 electrically connected to the upper electrode 22 as one connection portion of the pair. It has been. The wiring board 40 is provided with a connection portion 44 and a connection portion 46 as the other connection portion of the pair.

The support substrate 11 is made of, for example, an inorganic material, a metal material, a plastic material, or the like. Examples of the inorganic material include silicon (Si), silicon oxide (SiO _x ), silicon nitride (SiN _x ), and aluminum oxide (AlO _x ). Silicon oxide includes glass or spin-on-glass (SOG). Examples of the metal material include aluminum (Al), nickel (Ni), and stainless steel, and examples of the plastic material include polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyethyl ether. Ketone (PEEK) etc. are mentioned.

The support substrate 11 may be light transmissive or non-light transmissive. This is because since the image is displayed on the counter substrate 21 side, the support substrate 11 does not necessarily need to be light transmissive. The support substrate 11 may be a rigid substrate such as a wafer, or may be composed of a flexible thin glass or film. For example, one lower electrode 12 is provided on one surface of the support substrate 11 (a surface facing the counter substrate 21), and the display device 1 of the present embodiment configures one pixel P, for example. The connection portion 15 is provided on the other surface of the support substrate 11 (the surface opposite to the surface facing the counter substrate 21), as will be described in detail later.

The lower electrode 12 is made of a metal material such as gold (Au), silver (Ag), or copper (Cu), for example. For example, the lower electrode 12 may be divided into a lower electrode 12A and a lower electrode 12B as in the display device 2 shown in FIG. 3, or may be divided into a matrix or a segment.

The counter substrate 21 is made of the same material as the support substrate 11 except that it is light transmissive. An upper electrode 22 is provided on the entire surface of the counter substrate 21 (the surface facing the support substrate 11). On the upper electrode 22, a connection portion 25 extending toward the wiring substrate 40 is provided, as will be described in detail later.

The upper electrode 22 is formed of a light-transmitting conductive material (for example, indium oxide-tin oxide (ITO), antimony oxide-tin oxide (ATO), fluorine-doped tin oxide (FTO), or aluminum-doped zinc oxide (AZO)). Transparent electrode material). When an image is displayed on the counter substrate 21 side, the display device (electrophoretic element 30) is seen through the upper electrode 22, so that the light transmittance (transmittance) of the upper electrode 22 is as high as possible. For example, 80% or more. Further, the electric resistance of the upper electrode 22 is preferably as low as possible, for example, 100Ω / □ or less. The upper electrode 22 may be arranged in a matrix shape or a segment shape, like the lower electrode 12.

Note that an adhesive layer or a seal layer may be provided between the support substrate 11 and the counter substrate 21 with the electrophoretic element 30. In addition, for example, a moisture-proof film that prevents intrusion of moisture or the like may be provided on the display surface side of the counter substrate 21 (none is shown).

As shown in FIGS. 1 and 2, the electrophoretic element 30 includes electrophoretic particles 32 and a porous layer 33 in an insulating liquid 31. The migrating particles 32 are dispersed in the insulating liquid 31, and the porous layer 33 includes a fibrous structure 331 and non-migrating particles 332, and has a plurality of pores 333.

The insulating liquid 31 is filled in, for example, a space between the support substrate 11 and the counter substrate 21. The insulating liquid 31 is composed of, for example, any one kind or two or more kinds of non-aqueous solvents such as an organic solvent, and specifically includes hydrocarbon solvents such as paraffin or isoparaffin. Various other materials may be added to the insulating liquid 31 as necessary. For example, a colorant, a charge adjusting agent, a dispersion stabilizer, a viscosity adjusting agent, a surfactant or a resin may be added.

The electrophoretic particles 32 are one or more charged particles (electrophoretic particles) that migrate electrically, and are displayed by moving in the insulating liquid 31 toward the lower electrode 12 or the upper electrode 22 in accordance with an electric field. An image is displayed on the surface. The migrating particles 32 have an arbitrary optical reflection characteristic (light reflectance), such as an organic pigment, an inorganic pigment, a pigment, a carbon material, a metal material, a metal oxide, glass, or a polymer material (resin). Particles (powder). As the electrophoretic particles 32, one of these may be used, or two or more of them may be used. The electrophoretic particles 32 may be pulverized particles or capsule particles of resin solids containing the above particles.

As shown in FIGS. 1 and 2, the porous layer 33 is a three-dimensional structure (irregular network structure such as a non-woven fabric) formed by the fibrous structure 331, and is one or two or more. Gap (pore 333). The pore 333 is filled with the insulating liquid 31, and the migrating particles 32 move between the lower electrode 12 and the upper electrode 22 through the pore 333. The porous layer 33 may be adjacent to the upper electrode 22 or may be separated from it. The porous layer 33 may be supported by a spacer (not shown) that supports the space between the support substrate 11 and the counter substrate 21.

The fibrous structure 331 includes one or more non-migrating particles 332, and the non-migrating particles 332 are held by the fibrous structure 331. In the porous layer 33 which is a three-dimensional structure, one fibrous structure 331 may be entangled at random, or a plurality of fibrous structures 331 may be gathered and overlap at random. However, both may be mixed. FIG. 2 shows a case where the porous layer 33 is formed by a plurality of fibrous structures 331.

The fibrous structure 331 is preferably a nanofiber. Here, the nanofiber is a fibrous substance having a fiber diameter of 0.001 μm to 0.1 μm and a length of 100 times or more of the fiber diameter. The fibrous structure 331 is formed of any one kind or two or more kinds of polymer materials or inorganic materials, for example. Polymer materials include, for example, nylon, polylactic acid, polyamide, polyimide, polyethylene terephthalate, polyacrylonitrile, polyethylene oxide, polyvinyl carbazole, polyvinyl chloride, polyurethane, polystyrene, polyvinyl alcohol, polysulfone, polyvinyl pyrrolidone, polyvinylidene fluoride, polyhexa Fluoropropylene, cellulose acetate, collagen, gelatin, chitosan or copolymers thereof. The inorganic material is, for example, titanium oxide.

The non-electrophoretic particle 332 has an optical reflection characteristic different from that of the electrophoretic particle 32. The light reflectance of the non-migrating particles 332 is not particularly limited, but is preferably set so that at least the porous layer 33 can shield the migrating particles 32 as a whole. This is because contrast is generated by utilizing the difference between the light reflectance of the migrating particles 32 and the light reflectance of the porous layer 33. One or two or more particles that are fixed to the fibrous structure 331 and do not migrate electrically. The non-migrating particles 332 may be embedded in the held fibrous structure 331 or may partially protrude from the fibrous structure 331. The non-migrating particles 332 can be made of the materials listed for the migrating particles 32, and are appropriately selected depending on the role of the migrating particles 32 and the non-migrating particles 332 in order to generate contrast.

The side surface of the electrophoretic element 30 is sealed by, for example, a sealing portion 23. The sealing portion 23 is made of an insulating material such as a polymer material, for example. In FIG. 1, the sealing portion 23 is provided on the support substrate 11 and extends so as to cover the end surface of the counter substrate 21 while sealing the side surface of the electrophoretic element 30. For example, as shown in FIG. 4A, it may be provided between the support substrate 11 and the counter substrate 21 (specifically, the upper electrode 22).

The wiring substrate 40 is provided with a wiring 42 (a wiring 42A and a wiring 42B) for controlling the driving of the electrophoretic element 30, for example, on one surface of the support base 41 (a surface facing the display device 10). On the wiring 42, connection portions (connection portion 44 and connection portion 46) for connecting the display device 10 are provided. Around the connection portion 44 and the connection portion 46, a protection portion 45 and a protection portion are provided. 47 are provided.

The support base 41 is made of, for example, an inorganic material, a metal material, a plastic material, or the like, like the support substrate 11 and the counter substrate 21. Examples of the inorganic material include silicon (Si), silicon oxide (SiO _x ), silicon nitride (SiN _x ), and aluminum oxide (AlO _x ). Silicon oxide includes glass or spin-on-glass (SOG). Examples of the metal material include aluminum (Al), nickel (Ni), and stainless steel, and examples of the plastic material include polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyethyl ether. Ketone (PEEK) etc. are mentioned. The support base 41 may be light transmissive or non-light transmissive. The support base 41 may be a rigid substrate such as a wafer, or may be formed of a flexible thin glass or film.

The wiring 42 can be formed using, for example, the materials mentioned for the lower electrode 12 and the upper electrode 22. The wiring 42 may be light transmissive or non-light transmissive. For example, the wiring 42 includes a wiring 42 </ b> A electrically connected to the lower electrode 12 and a wiring 42 </ b> B electrically connected to the upper electrode 22. A connection part 44 and a connection part 46 are respectively provided on the wiring 42A and the wiring 42B at positions facing the lower electrode 12 and the upper electrode 22 with an adhesive layer 43 interposed therebetween.

The adhesive layer 43 is for improving the adhesion between the wiring 42A and the connection portion 44, and between the wiring 42B and the connection portion 46. The adhesive layer 43 is formed of a conductive material. Specific examples of the adhesive layer 43 include an adhesive (conductive) mixed with silver paste, a material having good conductivity such as silver powder, copper powder, or carbon fiber. Adhesive).

The connecting portion 44 and the connecting portion 46 are for electrically and mechanically connecting the display device 10 to the wiring board 40, and are formed of a conductive material. Specific materials constituting the connection part 44 and the connection part 46 include, for example, aluminum (Al), brass, copper (Cu), and the like. The connection portion 44 and the connection portion 46 have a concavo-convex structure that fits with the connection portion 15 and the connection portion 25 provided on the display device 10 side on the surface (the surface facing the display device 10). In the present embodiment, convex portions 44A and convex portions 46A are provided on the surfaces of the connecting portion 44 and the connecting portion 46, respectively. In addition, 44 A of convex parts and the convex part 46A may each be provided in the connection part 44 and the connection part 46, respectively, and may be provided with two or more.

The protection part 45 and the protection part 47 are provided around the connection part 44 and the connection part 46, respectively, and are formed of, for example, an acrylic resin or an epoxy resin containing SiOx or AlOx. Specifically, the protection part 45 covers the side surface of the connection part 44, and is preferably provided continuously, for example, on the support base 41 or the wiring 42A. The protection part 47 covers the side surface of the connection part 46, and it is preferable that the protection part 47 is provided continuously to, for example, the support base 41 or the wiring 42B, similarly to the protection part 45. When the support base 41 is, for example, a flexible base, stress is likely to concentrate on the end portion of the metal film (for example, the wiring 42A) on the support base 41 due to deformation of the substrate and the like. There is a risk that this will occur. By providing the protection part 45 and the protection part 47 continuously from the side surfaces of the connection part 44 and the connection part 46 to the support base 41 or the wiring 42A and the wiring 42B, the end parts of the connection part 44 and the connection part 46 The stress concentrated on the end portions of the wiring 42A and the wiring 42B is distributed to the protective portion 45 and the protective portion 47, and durability is improved.

In addition, it is preferable that a protective layer is formed on the wiring 42 other than the periphery of the connection portion 44 and the connection portion 46 (not shown). The protective layer is for preventing corrosion and oxidation of the wiring 42. The protective layer may be formed by extending the protective part 45 and the protective part 47, or may be formed separately. The protective layer preferably covers not only the upper surface of the wiring 42 but also the side surfaces.

The connecting portion 15 and the connecting portion 25 on the display device 10 side are respectively provided at positions facing the connecting portion 44 and the connecting portion 46 on the wiring board 40 side, and are formed as follows, for example. The connection portion 15 is provided on one surface of the support substrate 11 (a surface facing the wiring substrate 40), and is electrically connected to the lower electrode 12 through a through electrode 13 that penetrates the support substrate 11. The through electrode 13 is made of, for example, silver (Ag), and also serves as an adhesive layer that maintains the adhesion between the lower electrode 12 and the connection portion 15, as in the adhesive layer 43. The side wall of the through electrode 13 is preferably covered with the antioxidant film 14. Examples of the material of the antioxidant film 14 include an acrylic resin and an epoxy resin containing SiOx or AlOx. Around the connection portion 15, as with the connection portion 44 and the connection portion 46, a protection portion 16 that covers the side surface of the connection portion 15 and extends to the support substrate 11 is provided. The protective part 16 disperses the stress concentrated on the end part of the connection part 15 in contact with the support substrate 11. By providing this protective part 16, the occurrence of damage or the like of the connection part 15 is suppressed and durability is improved. Will improve.

The connecting portion 25 is provided on the upper electrode 22 and is electrically connected to the upper electrode 22 through the adhesive layer 24. The connection portion 25 extends toward the wiring substrate 40 and is formed so as to seal a part of the side surface of the electrophoretic element 30, for example, like the sealing portion 23. The connection portion 25 may be formed at any position in the end portion and the surface of the display device 10, but it is preferable that the connection portion 25 be formed at the end portion in consideration of display appearance. A protective part 26 is provided around the connection part 25 in the same manner as the connection part 15. The protection part 26 can be formed of the same material as the protection part 16 provided around the connection part 15. The protection part 26 disperses the stress concentrated on the end part of the connection part 25, and the durability is improved by providing the protection part 26. The protection unit 26 is for preventing corrosion and oxidation of the connection unit 25 and preventing entry of moisture and the like into the display body (here, the electrophoretic element 30).

The connection part 15 and the connection part 25 are formed of the same material as the protection part 45 and the protection part 47, for example. On the surfaces of the connection part 15 and the connection part 25 (opposite surface to the wiring board 40), there are provided concavo-convex structures that are respectively fitted to the connection part 44 and the connection part 46 provided on the wiring board 40 side. In the present embodiment, a recess 15A and a recess 25A are provided. Thus, the display body with respect to the wiring board 40 is provided by providing the display body device 10 and the wiring board 40 with a pair of connecting portions (the connecting portion 15 and the connecting portion 44 and the connecting portion 25 and the connecting portion 46). The device 10 can be attached and detached.

(1-2. Operation of display device)
For example, the display device 1 operates as follows. 4A and 4B are diagrams for explaining the operation of the display device, and show a cross-sectional configuration corresponding to FIG. Here, in order to simplify the illustrated contents, the porous layer 33 is shown in a simplified manner.

In the display device 1 in the initial state, the migrating particles 32 are arranged in the retreat area R1 (FIG. 4A). In this case, since the migrating particles 32 are shielded by the porous layer 33 in all pixels, the color (for example, white) of the porous layer 33 is displayed when the display device 1 is viewed from the counter substrate 21 side. The

On the other hand, when an electric field is applied between the lower electrode 12 and the upper electrode 22, as shown in FIG. 4B, the migrating particles 32 pass through the porous layer 33 (pore 333) from the retreat area R1 for each pixel. Then, it moves to the display area R2. Thereby, the porous layer 33 is concealed by the migrating particles 32, and the color (for example, black) of the migrating particles 32 is displayed.

In the case where the lower electrode 12 is dividedly formed (lower electrode 12A and lower electrode 12B) and, for example, two pixels P1 and P2 are provided as in the display device 2 shown in FIG. 3, the lower electrode 12A and By individually controlling the voltage applied to the lower electrode 12B, the movement of the migrating particles 32 can be controlled for each of the lower electrode 12A and the lower electrode 12B. Thereby, a region (pixel) in which the porous layer 33 is hidden by the migrating particles 32 and a region (pixel) in which the porous layer 33 is not hidden by the migrating particles 32 are formed in the display surface. Will occur.

In the display device 2, the lower electrode 12A and the lower electrode 12B are provided with a connection portion 15a having a recess 15A and a connection portion 15b having a recess 15B, respectively. Further, wiring 42A and wiring 42C corresponding to the lower electrode 12A and the lower electrode 12B are also provided on the wiring board 40 side, and a connecting portion 44a and a convex portion having a convex portion 44A on the

wirings

42A and 42C, respectively. A connecting portion 44b having 44B is provided.

(1-3. Action and effect)
For example, in a general display device used for a watch dial or the like, a segment electrode is formed on a lower substrate, and a display body (for example, a microcapsule) is formed on the upper portion of the display device via an adhesive layer, for example. Type electrophoretic display). On the display body, a common electrode and a transparent plastic substrate are laminated in this order. A drive signal is supplied to the segment electrodes, and a common signal is supplied to the common electrodes. When a potential is applied to the segment electrode with respect to the common electrode by controlling the element driving signal, the charged black particles and white particles in the capsule move upward or downward, respectively. Thereby, when viewed from the transparent plastic substrate side, each pixel is visually recognized as white or black.

In recent years, wearable terminals that are being developed are assumed to use display devices not only for displaying characters but also for changing colors and patterns. In the wearable terminal, it is also assumed that the display device is installed on a flexible substrate as well as a rigid substrate. A flexible substrate is less durable than a rigid substrate such as a glass substrate. In a wearable terminal having flexibility, the end of the installed display device is likely to be damaged, and the display device may be partially destroyed during use.

However, in the general display device as described above, since the plurality of display bodies and the lower substrate constituting the display device are integrated through the adhesive material, they cannot be easily peeled off. For this reason, when a load is applied to a part and the display body is damaged, it is not possible to remove and repair only the damaged display body, and it is necessary to replace the entire display.

On the other hand, in the display device 1 of the present embodiment, the display device 10 and the wiring board 40 are separately formed as described above, and a pair of connection portions that can be connected to each other is provided. Specifically, a connection portion 15 electrically connected to the lower electrode 12 and a connection portion 25 electrically connected to the upper electrode 22 are provided on the display device 10 side. Further, the connection portion 44 and the connection portion 46 are provided on the wiring board 40 at positions facing the connection portion 15 and the connection portion 25. Thereby, the display body device 10 can be arbitrarily detached from the wiring board 40.

As described above, in the display device 1 according to the present embodiment, the display device 10 and the wiring board 40 are formed independently, and are connected to each other (the connecting portion 15 and the connecting portion 44 and the connecting portion 25 and the connecting portion). 46). Therefore, the display device 10 and the wiring board 40 can be attached and detached, and the maintainability can be improved.

In addition, as described above, in a wearable terminal having flexibility, stress tends to concentrate on the end portion of the installed display device, and thus the end portion is likely to be damaged. On the other hand, in the present embodiment, the

protection portions

16, 26, 45, 47 are provided around the

connection portions

15, 25, 44, 46, respectively. As a result, the stress concentrated on the end portions of the

connection portions

15, 25, 44, 46 is dispersed, and the occurrence of breakage or peeling of the metal film forming the

connection portions

15, 25, 44, 46 is suppressed. Is possible. Therefore, it is possible to improve the durability of the

connection portions

15, 25, 44, and 46, and it is possible to provide the display device 1 (or the display device 2) with high reliability.

Next, second and third embodiments and modified examples (modified examples 1 and 2) will be described. In addition, the same code | symbol is attached | subjected to the component corresponding to the display apparatus 1 of the said 1st Embodiment, and description is abbreviate | omitted.

<2. Second Embodiment>
FIG. 5 illustrates a cross-sectional configuration of a display device (display device 3) according to the second embodiment of the present disclosure. As in the first embodiment, the display device 3 is used for, for example, a clothing such as a wristwatch or a bag to be described later or a wall decoration, for example, as a display body. For example, an electrophoretic display using the electrophoretic element 30. Similar to the first embodiment, the display device 3 includes a connecting portion (for example, the connecting portion 15) and a convex portion having a recess (for example, the recess 15A) that fits in the display device 20 and the wiring board 40. And a connecting portion (for example, connecting portion 44) having a portion (for example, a protruding portion 44A). The present embodiment is different from the first embodiment in that a buffer member (for example, the buffer member 17) is provided inside the recess. FIG. 5 schematically shows the configuration of the display device 3 and may differ from actual dimensions and shapes.

As described above, the display device 3 of the present embodiment has a configuration in which the buffer member 17 and the buffer member 27 are provided in the recess 15A and the recess 25A provided on the display device 20 side, respectively.

When the display body device 20 is connected to the wiring board 40, the buffer member 17 and the buffer member 27 are concentrated on the

connection portions

15, 25, 44, 46, in particular, the concave portions 15A and the concave portions 25A, and the convex portions 44A and the convex portions 46A. This is to reduce the stress that occurs. The buffer member 17 and the buffer member 27 are formed using a material different from that of the connection portion 15 and the connection portion 25. The buffer member 17 and the buffer member 27 are preferably formed using, for example, a resin material having cushioning properties. Specific examples of the material include styrene-based, olefin-based, vinyl chloride-based, urethane-based, and amide-based materials. These elastomers can be mentioned. Specifically, the buffer member 17 and the buffer member 27 are preferably provided on the entire side surfaces of the recess 15A and the recess 25A, respectively. Thereby, the stress load concentrated on the concave portions 15A and the concave portions 25A and the convex portions 44A and the convex portions 46A due to deformation of the wiring board 40 or the like is reduced.

As described above, in the present embodiment, the buffer member 17 and the buffer member 27 are provided in the recess 15A and the recess 25A provided on the surfaces of the connection portion 15 and the connection portion 25 (the surface facing the wiring board 40). I made it. Thereby, in the display device 3 in which the wiring substrate 40 is configured using a particularly flexible substrate, it is possible to further improve the durability of the

connection portions

15, 25, 44, and 46. Therefore, in addition to the effect of the first embodiment, there is an effect that the reliability can be further improved.

<3. Modification>
(3-1. Modification 1)
FIG. 6 illustrates a cross-sectional configuration of a display device (display device 4) according to Modification 1 of the present disclosure. As in the first and second embodiments, the display device 4 is used to decorate clothes and wall surfaces such as wristwatches and bags, which will be described later, by combining one or more, for example, As the display body, for example, an electrophoretic display using the electrophoretic element 30 is used. As in the first embodiment, the display device 4 has a connection portion (for example, the connection portion 51 and the connection portion) having recesses (the recess portion 51A and the recess portion 52A) that fit into the display body device 50 and the wiring board 60. Part 52) and a connection part (for example, connection part 61 and connection part 62) each having a convex part (the convex part 61A and the convex part 62A) are provided. The present modification is different from the first embodiment in that each of the

connection portions

51, 52, 61, 62 is formed of conductive rubber (conductive rubber). FIG. 6 schematically shows the configuration of the display device 4 and may differ from actual dimensions and shapes.

By forming the connecting

portions

51, 52, 61, and 62 using conductive rubber as in the present modification, the inside of the recess 51A and the recess 52A as in the display device 3 in the second embodiment. It is possible to improve the durability of the connecting

portions

51, 52, 61, 62 without providing a buffer member.

(3-2. Modification 2)
FIG. 7 illustrates a cross-sectional configuration of a display device (display device 5) according to Modification 2 of the present disclosure. As in the first and second embodiments, the display device 5 is used for, for example, an ornament such as a wristwatch or a bag to be described later and a wall decoration, for example, by combining one or a plurality thereof. For example, an electrophoretic display using the electrophoretic element 30 as the display body. The deformable display device 5 is characterized in that the

connection portions

71, 72, 81, 82 provided on the display device 70 and the wiring board 80 are formed of materials having magnetic force, respectively. This is different from the second embodiment and the first modification. FIG. 7 schematically shows the configuration of the display device 5 and may differ from actual dimensions and shapes.

The connecting

portions

71, 72, 81, 82 are formed of a magnetic material such as a magnet as described above. When the

connection portions

71, 72, 81, 82 are formed using a material having magnetic force, it is not always necessary to provide an uneven structure on the surfaces of the

connection portions

71, 72, 81, 82 facing each other. In addition, each connecting

portion

71, 72, 81, 82 may be formed with a metal film that shields the magnetic force generated from the magnet on a surface other than the surfaces facing each other (a surface facing the side surface and the substrate (or base)). preferable. In particular, by using a so-called cap magnet in which a portion other than the magnet surface is covered with an iron material (yoke), the attractive force of the magnet surface is enhanced, and the attachment strength of the display device 70 to the wiring board 80 is improved.

As described above, by forming the connecting

portions

71, 72, 81, 82 using a material having magnetic force, the same effect as that of the display device 1 in the first embodiment can be obtained. Further, by forming the connecting

portions

71, 72, 81, 82 using a magnet, it is possible to follow the movement in the plane direction (XZ plane direction).

<4. Third Embodiment>
FIG. 8 illustrates a cross-sectional configuration of a display device (display device 6) according to the third embodiment of the present disclosure. As in the first embodiment, the display device 6 is used for, for example, a wristwatch or a bag to be described later, or a wall decoration, for example, as a display body. For example, an electrophoretic display using the electrophoretic element 30. Similar to the first embodiment, the display device 6 includes a connecting portion (for example, the connecting portion 15) and a convex portion having a recess (for example, the recess 15A) that fits in the display device 10 and the wiring board 90. And a connecting portion (for example, connecting portion 44) having a portion (for example, a protruding portion 44A). In the present embodiment, the support base 91 constituting the wiring board 90 is made of a base having elasticity, and the protection part 95 and the protection part 97 protecting the connection part 44 and the connection part 46, respectively, The second embodiment is different from the first and second embodiments and the first and second modifications in that the wiring 42A and the wiring 42B are extended to the back surfaces. FIG. 8 schematically shows the configuration of the display device 6 and may differ from actual dimensions and shapes.

The support base 91 is made of a material having elasticity as described above, for example, a fiber assembly such as cloth. Since the support base 91 formed by the fiber assembly has a gap between the fibers, moisture or the like can easily pass therethrough. For example, there is a possibility that a short circuit may occur between the wiring 42A and the wiring 42B. For this reason, in this embodiment, it is preferable that the protection part 95 and the protection part 97 continuously cover not only the front and side surfaces of the wiring 42A and the wiring 42B but also the back surface. Thereby, it is possible to suppress the occurrence of a short circuit between the wiring 42A and the wiring 42B. The protective part 95 and the protective part 97 covering the back surfaces of the wiring 42A and the wiring 42B support, for example, the resin material constituting the protective part 95 and the protective part 97 using the gaps of the fiber aggregates constituting the support base 91. It can be formed by impregnating the substrate 91.

As described above, in the present embodiment, the protective portion 95 and the protective portion 97 are formed to extend to the back surfaces of the wiring 42A and the wiring 42B, respectively, so that the support base 91 constituting the wiring board 90 is stretchable. It is possible to use a material having That is, in addition to the effect of the first embodiment, the material selectivity of the substrate (specifically, the support base) to which the display device 10 is attached is improved.

Further, by covering the back surfaces of the wiring 42A and the wiring 42B with the protection part 95 and the protection part 97, respectively, it becomes possible to improve the durability of the connection part 44 and the connection part 46 on the wiring board 90 side.

<5. Application example>
Next, application examples of the display devices (display devices 1 to 6) described in the first to third embodiments and the first and second modifications will be described. However, the configuration of the electronic device described below is merely an example, and the configuration can be changed as appropriate. The display device 1 (and the display devices 2 to 6) is a part of various electronic devices or various electronic devices or interior or clothing, for example, a so-called wearable terminal, such as a watch (watch), a bag, clothes, a hat. It can be applied to a part of clothing such as glasses and shoes, and the type of the electronic device is not particularly limited. FIG. 9 shows a schematic configuration of a specific electronic device described below. The electronic device 100 includes a display device 1 (or display devices 2 to 6), and a functional unit 110 provided with a circuit for controlling driving of the display device 1 (or display devices 2 to 6), a power source, and the like. .

(Application example 1)
10A and 10B show the appearance of an electronic timepiece (a wristwatch-integrated electronic device). This electronic timepiece has, for example, a dial (character information display portion) 210 and a band portion (color pattern display portion) 220, and these dial 210 and band portion 220 include the display device 1 (or display device). 2 to 6). For example, various characters and designs are displayed on the dial 210 as shown in FIGS. 10A and 10B by display driving using the above-described electrophoretic element. The band part 220 is a part that can be attached to an arm or the like, for example. By using the display device 2 in the band unit 220, various color patterns can be displayed, and the design of the band unit 220 can be changed from the example of FIG. 10A to the example of FIG. 10B. . Electronic devices that are also useful in fashion applications can be realized.

(Application example 2)
FIG. 11A and FIG. 11B represent the appearance of the bag. This bag has, for example, a storage unit 310 and a handle 320. For example, the display device 1 (or display devices 2 to 6) is attached to the storage unit 310. Various characters and symbols are displayed on the storage unit 310 by the display device 1 (or the display devices 2 to 6). Further, by attaching the display device 1 (or the display devices 2 to 6) to the handle 320 portion, various color patterns can be displayed. As shown in the example of FIG. 11A to the example of FIG. The design can be changed. Electronic devices that are also useful in fashion applications can be realized.

(Application example 3)
FIG. 12 shows an example in which the display device 1 (or the display devices 2 to 6) is attached to the wall surface 400. FIG. As shown in FIG. 12, various patterns can be formed on the wall surface 400 by attaching a plurality of display devices 1 (or display devices 2 to 6) to the wall surface 400 and controlling the driving thereof.

Although the present disclosure has been described with reference to the first to third embodiments and the first and second modifications, the present disclosure is not limited to the aspect described in the embodiments, and various modifications can be made. For example, in the above-described embodiment and the like, the concave portion (for example, the concave portion 15A) of the concavo-convex structure to be fitted to each other is provided on the display device (for example, the display device 10) side, and the convex portion (for example, the convex portion 44A) is provided on the wiring board For example, although the example provided in the wiring board 40 side side was shown, you may make it provide not only this but a recessed part in the wiring board side, and a convex part in the display body device side.

Further, for example, in the above-described embodiment, the description has been made using the microcup electrophoretic element as the display body. However, the present invention is not limited thereto, and a microcapsule electrophoretic element or a twist ball electrophoretic element is used. It may be used. Further, a display body other than the electrophoretic element, for example, an electrochromic (EC) element, a toner-type display body, or a powder particle moving display body may be used.

Furthermore, it is not necessary to provide all the constituent elements described in the above embodiments and the like, and other constituent elements may be included. In the first embodiment, the display device 1 is, for example, a display device of 1 cm to several cm square, for example. However, other shapes may be used and the display device 1 is not particularly limited.

In addition, the effect described in this specification is an illustration to the last, and is not limited, Moreover, there may exist another effect.

In addition, this indication can also take the following structures.
(1)
A first substrate having a display and a first connection;
A display device comprising: a second substrate having a second connection portion connected to the first connection portion together with wiring for controlling driving of the display body.
(2)
The display device according to (1), wherein the first substrate and the second substrate are electrically and mechanically connected via the first connection portion and the second connection portion.
(3)
The display device according to (1) or (2), wherein at least one of the first connection part and the second connection part has a protection part in the periphery.
(4)
The display device according to any one of (1) to (3), wherein the first connection portion and the second connection portion have a concave portion on one side and a convex portion on the other side.
(5)
The said recessed part is a display apparatus as described in said (4) which has a buffer member inside.
(6)
The display device according to (5), wherein the buffer member is formed of a material different from that of the first connection portion or the second connection portion in which the concave portion is provided.
(7)
The display device according to any one of (1) to (6), wherein at least one of the first connection portion and the second connection portion is made of conductive rubber.
(8)
The display device according to any one of (1) to (7), wherein the first connection portion and the second connection portion are formed of materials having a magnetic force.
(9)
The display device according to any one of (3) to (8), wherein the protection unit is formed of a resin material.
(10)
The display body includes a first electrode and a second electrode disposed to face each other with a display layer interposed therebetween,
The first substrate is provided with two first connection portions that are electrically connected to the first electrode and the second electrode, respectively.
The display device according to any one of (1) to (9), wherein the second substrate is provided with two second connection portions corresponding to the two first connection portions.
(11)
A display device,
The display device
A first substrate having a display and a first connection;
An electronic apparatus comprising: a second substrate having a second connection portion connected to the first connection portion together with wiring for controlling driving of the display body.

This application claims priority on the basis of Japanese Patent Application No. 2016-093770 filed on May 9, 2016 at the Japan Patent Office. The entire contents of this application are hereby incorporated by reference. Incorporated into.

Those skilled in the art will envision various modifications, combinations, subcombinations, and changes, depending on design requirements and other factors, which are within the scope of the appended claims and their equivalents. It is understood that

Claims

A first substrate having a display and a first connection;
A display device comprising: a second substrate having a second connection portion connected to the first connection portion together with wiring for controlling driving of the display body.
The display device according to claim 1, wherein the first substrate and the second substrate are electrically and mechanically connected to each other via the first connection portion and the second connection portion.
2. The display device according to claim 1, wherein at least one of the first connection part and the second connection part has a protection part in the periphery.
The display device according to claim 1, wherein the first connection portion and the second connection portion have a concave portion on one side and a convex portion on the other side.
The display device according to claim 4, wherein the recess has a buffer member therein.
The display device according to claim 5, wherein the buffer member is formed of a material different from that of the first connection part or the second connection part in which the recess is provided.
The display device according to claim 1, wherein at least one of the first connection portion and the second connection portion is formed of conductive rubber.
The display device according to claim 1, wherein the first connection portion and the second connection portion are formed of materials having magnetic force.
The display device according to claim 3, wherein the protection part is formed of a resin material.
The display body includes a first electrode and a second electrode disposed to face each other with a display layer interposed therebetween,
The first substrate is provided with two first connection portions that are electrically connected to the first electrode and the second electrode, respectively.
The display device according to claim 1, wherein the second substrate is provided with two second connection portions corresponding to the two first connection portions.
A display device,
The display device
A first substrate having a display and a first connection;
An electronic apparatus comprising: a second substrate having a second connection portion connected to the first connection portion together with wiring for controlling driving of the display body.