electronic equipment

Abstract

To provide a novel electronic apparatus, an electronic apparatus with a novel mode, or a strong electronic apparatus.SOLUTION: An electronic apparatus includes a housing and a display part with flexibility. The housing includes a first plate, a second plate, and a sealing part. The first plate has light-transmitting property. The first plate and the second plate are disposed to face each other. The sealing part is provided between the first plate and the second plate. The first plate includes a first curved surface that forms an inner side of the housing. The display part includes a region in contact with the first curved surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] Electronic device, display device, light-emitting device, power storage device, driving method thereof, or manufacturing method thereof Regarding the law.

[0002] In this specification, electronic equipment refers to any device that operates when power is supplied. Electronic devices having a power supply, electronic devices having a storage battery as a power supply, and electro-optical devices , an information terminal device having a storage battery, and the like are all electronic devices. The technical field of one embodiment of the invention disclosed in this specification etc. is not limited to the above. Alternatively, one aspect of the present invention relates to a process, a machine, relating to the manufacture or composition of matter Therefore, the technical field of one embodiment of the present invention disclosed in this specification is , semiconductor devices, display devices, liquid crystal display devices, light-emitting devices, lighting devices, power storage devices, memory devices, imaging devices, Examples of the imaging device include a driving method thereof and a manufacturing method thereof. do. [Background technology]

[0003] In recent years, display devices that are worn on the human body, such as head-mounted displays, have been proposed. These are called head-mounted displays or wearable displays. There is a demand for lighter and smaller electronic devices used in daily life, such as hearing aids.

[0004] In addition, as electronic devices become lighter, the batteries they contain are also becoming lighter and smaller. Stylization is required.

[0005] Furthermore, Patent Documents 1 and 2 disclose electronic books equipped with flexible display devices. It is being done. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2010-282181 [Patent Document 2] Patent Publication No. 2010-282183 Summary of the Invention [Problem to be solved by the invention]

[0007] To make the display device worn on the human body more comfortable for the user, it is necessary to reduce its weight. Furthermore, there is a demand for miniaturization and weight reduction of the entire electronic device, including the display device drive unit and power supply. It is necessary to make it a reality.

[0008] Furthermore, the display device worn on the human body and the electronic device having the display device are portable. It is required to be easy to bend and durable.

[0009] Furthermore, a display device that is worn on the human body and an electronic device that has such a display device are Repeated attachment and detachment can cause external forces such as bending, which can damage the display and exterior parts. In addition, built-in power storage devices may be destroyed.

[0010] An object of one embodiment of the present invention is to provide a novel electronic device. An object of one embodiment of the present invention is to provide an electronic device having a novel configuration. An object of one embodiment of the present invention is to provide a durable electronic device.

[0011] Another object of one embodiment of the present invention is to provide a novel display device. An object of one embodiment of the present invention is to provide a display device having a novel structure. Another object of one embodiment of the present invention is to provide a durable display device.

[0012] Another aspect of the present invention is to provide an electronic device that is worn on the body when used. Another embodiment of the present invention is to provide an electronic device that is worn on a wrist. This is one of the challenges.

[0013] Another object of one embodiment of the present invention is to provide a display device that is worn on the body when used. Another embodiment of the present invention is to provide a display device that is worn on the arm. This is one of the challenges.

[0014] Another embodiment of the present invention is to provide a power storage device that is worn on a part of the body. Another object of the present invention is to provide a power storage device that is worn on an arm. This is one of the challenges.

[0015] The description of these problems does not preclude the existence of other problems. It is not necessary for one embodiment to solve all of these problems. The subject matter will be self-evident from the description, drawings, claims, etc. It is possible to extract other issues from the drawings, claims, etc. [Means for solving the problem]

[0016] One embodiment of the present invention is an electronic device including a housing and a flexible display portion.

[0017] The housing is, for example, a structure made up of one or more components. For example, structural materials.

[0018] Here, the housing may have an opening in a part thereof.

[0019] The electronic device according to one aspect of the present invention is preferably worn on the wrist of a user. In the electronic device, the housing has a first plate, a second plate, and a sealing portion. The first plate and the second plate are arranged to face each other. The first plate has a first curved surface that forms the inside of the housing. The display portion has a region in contact with the first curved surface. It is preferably worn on the user's arm in contact with the second plate.

[0020] Alternatively, the electronic device of one embodiment of the present invention includes a first plate, a second plate, a sealing portion, and a flexible The first plate has a light-transmitting property, and the first plate and the second plate are opposite each other. The first plate is arranged to fit together, and a sealing portion is provided between the first plate and the second plate, and the first plate is The display unit has a first curved surface that forms the inside of the display unit, and the display unit has an area that contacts the first curved surface.

[0021] In the above configuration, the first plate, the second plate, and the sealing portion are preferably flexible. In the above configuration, a part of the sealing portion forms the outside of the housing of the second plate. It is preferable that the surface has a surface that is substantially continuous with the surface.

[0022] In the above structure, the sealing portion preferably includes a resin. Therefore, it is preferable that the sealing portion has higher elasticity than the first plate. Preferably, the sealing portion has a lower rigidity than the first plate. It is preferable that the flexibility is higher than that of the

[0023] In the above-described configuration, the power storage device is provided inside the housing, and the power storage device is in contact with the second plate. In the above structure, it is preferable that a region between the power storage device and the display portion It is preferable to have a third plate at the [Effects of the Invention]

[0024] According to one embodiment of the present invention, a novel electronic device can be provided. In this manner, electronic devices having novel configurations can be provided. This makes it possible to provide a durable electronic device.

[0025] According to one embodiment of the present invention, a novel display device can be provided. According to one embodiment of the present invention, a display device having a novel configuration can be provided. According to one aspect of the invention, a robust display device can be provided.

[0026] According to another aspect of the present invention, there is provided an electronic device that is worn on a part of the body. Furthermore, one aspect of the present invention provides an electronic device that is worn on the wrist. can be done.

[0027] According to another embodiment of the present invention, a power storage device that is worn on a part of the body when used is provided. According to one embodiment of the present invention, a power storage device that is worn on an arm can be provided. can be done.

[0028] Alternatively, according to one aspect of the present invention, a display device that is worn on the body when used can be provided. According to one embodiment of the present invention, a display device that is worn on the arm can be provided. can.

[0029] The description of these effects does not preclude the existence of other effects. An embodiment does not necessarily have to have all of these effects. The above will be made clear from the description, drawings, claims, etc. It is possible to extract other effects from the descriptions in the aspects and claims. [Brief explanation of the drawings]

[0030] [Figure 1] 1A and 1B are perspective views illustrating electronic devices according to one embodiment of the present invention. [Figure 2] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 3] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 4] 1A to 1C are perspective views illustrating a method for manufacturing an electronic device according to one embodiment of the present invention. [Figure 5] 1A to 1C are perspective views illustrating a method for manufacturing an electronic device according to one embodiment of the present invention. [Figure 6] 1A and 1B are perspective views illustrating electronic devices according to one embodiment of the present invention. [Figure 7] 1A to 1C are perspective views illustrating a method for manufacturing an electronic device according to one embodiment of the present invention. [Figure 8] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 9] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 10] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 11] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 12] 1A and 1B are perspective views illustrating electronic devices according to one embodiment of the present invention. [Figure 13] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 14] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 15] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 16] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 17] 1A and 1B are cross-sectional views illustrating electronic devices according to one embodiment of the present invention. [Figure 18] FIG. 1 is a perspective view illustrating one embodiment of the present invention. [Figure 19] FIG. 1 is a diagram showing the appearance of a thin storage battery. [Figure 20] FIG. 1 is a cross-sectional view of a thin storage battery. [Figure 21] 1A to 1C are diagrams illustrating a method for manufacturing a thin storage battery. [Figure 22] 1A to 1C are diagrams illustrating a method for manufacturing a thin storage battery. [Figure 23] 1A to 1C are diagrams illustrating a method for manufacturing a thin storage battery. [Figure 24] FIG. 10 is a diagram illustrating the radius of curvature of a surface. [Figure 25] FIG. 2 is a diagram illustrating the radius of curvature of a film. [Figure 26] FIG. 1 is a diagram illustrating a coin-type storage battery. [Figure 27] 1A and 1B illustrate one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the following description, and it is understood by those skilled in the art that various modifications may be made to the modes and details thereof. The present invention will be easily understood by reading the following description of the embodiments. It is not something that is done.

[0032] (Embodiment 1) In this embodiment, an example of an electronic device 100 that can be worn on a part of the body is shown.

[0033] FIG. 1 is a perspective view of the electronic device 100. FIG. 2(A) is a perspective view of the electronic device 100 shown in FIG. 2(B) shows a cross section of the portion indicated by the dashed line AB in FIG. 2(A). The electronic device 100 shown in FIG. 2 includes a plate 111, a plate 112, two sealing portions 121, and two sealing members 122. The electronic device 100 has a first circuit board 10 Here, it is preferable that the first circuit board 104 has a flexible FPC (Flexible Printed Circuit) is a type of board in which wiring is provided on a resin film. le Printed Circuit) can be used.

[0034] The display unit 102 has a display element on a flexible film.

[0035] The sealing portion 121 and the sealing portion 122 are portions (areas) located between the plates 111 and 112. The sealing portion 121 and the sealing portion 122 are in contact with the plate 111 and the plate 112. is preferred.

[0036] Here, FIG. 2(A) shows a cross section of the arm and a roughly planar view of the electronic device 100 when worn on the arm, for example. 2B is an example of a vertical cross section. The sealing portion 122 is a cross section perpendicular to the cross section shown in FIG. The plate 111 and the plate 112 are in contact with each other at their ends, and have a portion (area) located between the plate 111 and the plate 112. In addition, the sealing portion 122 is preferably formed between the plate 111 and the The ends of the plate 112 may be capped.

[0037] The sealing portion 121 is in contact with the ends of the plates 111 and 112 in the cross section shown in FIG. , preferably has a portion located between plates 111 and 112.

[0038] The sealing portion 121 and the sealing portion 122 have a portion located between the plate 111 and the plate 112. This allows the gap between the plates 111 and 112 to be maintained, and the overall structure of the electronic device 100 to be maintained. In addition, when an external force is applied to the electronic device 100, the shapes of the plates 111 and 112 are changed. After the sealing portion 12 is removed, the sealing portion 12 is easily restored to its original shape. 1, the width 138 of the sealing portion 122 is narrower than the width 139 of the electronic device 100. The width 38 may be approximately the same as the width 139 of the electronic device 100. By doing so, the ends may be smoothly connected, improving ease of wearing.

[0039] The surfaces of the plates 111 and 112 preferably have curved surfaces. Preferably, 112 has a cross section that is, for example, circular or arc-shaped.

[0040] Alternatively, the plates 111 and 112 may be formed in a shape corresponding to the cross section when the electronic device 100 is attached or detached. In this case, it is preferable that the area with a large radius of curvature is hardly deformed and the end portion is bent. For example, arched, C-shaped, oval, or elliptical. It is preferable that the shape of the slit is a partly cut shape. This improves the ease of wearing it on the body, such as on the arm. For example, when wearing it on the arm, The electronic device 100 can cover the arm in accordance with the shape of the plate 111 and the plate 112. may have a rectangular shape, for example, a U-shape.

[0041] Furthermore, if the plates 111 and 112 are made of resin such as plastic, the edges of the plates may be damaged. In addition, for example, when the plate 111 or the plate 112 is made of a resin, chips or cracks may easily occur in the resin. If plastic or other resin is used to construct the housing as a single unit, cracks may easily occur in the resin. This phenomenon is likely to occur mechanically when the plates 111 and 112 are thin. Chipping or cracking may cause a decrease in sealing performance. In such cases, debris may get between the plate and the sealing part, reducing the sealing performance. In this case, by providing the sealing portion 121 and the sealing portion 122, the plate 111 and the plate 112 are supported. It can absorb external impacts, prevent cracks, chips, and fractures, and is less likely to break. This makes it possible to provide a durable electronic device 100.

[0042] The electronic device 100 preferably includes a display module. The display module also includes a circuit board 104 and a second circuit board. The circuit board 104 or the second circuit board is preferably a circuit board for driving a display unit, for example. It is preferable that the display module has a driver circuit for supplying power from a power storage device. Preferably, a converter circuit is provided for this purpose.

[0043] The electronic device 100 may not have the sealing portion 122. 0 includes a plate 111, a plate 112, a sealing portion 121, a display portion 102, a circuit board 104, FIG. 11(A) shows a cross section of the electronic device 100, and FIG. 11(B) shows an exploded view of FIG. 11(A). FIG. 11(C) shows the cross section of the area indicated by the line AB. An enlarged view of area C is shown.

[0044] In FIG. 11, the electronic device 100 includes a board 111, a board 112, and a It is preferable to have a housing that is configured with a sealing portion 121 that is provided so as to be in contact with the housing. In order to form the body, for example, as shown in FIG. 11(A), in the cross section of the plate 111, the end It is preferable that the bend is L-shaped.

[0045] 11(D) shows a modification of FIG. 11(C), in which a seal is provided between the plate 111 and the plate 112. By providing the sealing portion 123, the plate 111 and the plate 112 In this case, the sealing property of the housing formed by the sealing portion 121 and the sealing portion 123 can be further improved. In addition, when the plates 111 and 112 are deformed by an external force, the sealing portion 121 and The sealing portion 123 can absorb external forces and maintain the overall structure of the electronic device 100.

[0046] 12 and 13, the sealing portion 121 is formed on the surface of the plate 111 or the plate 112. It is preferable that the electronic device 100 has a protruding area. 13 is a cross-sectional view of the electronic device 100 shown in FIG.

[0047] The electronic device 100 shown in FIG. 13 includes a plate 111, a plate 112, a sealing portion 121, and a sealing portion 122. 22, a display unit 102, a circuit board 104, a power storage device 103, a circuit unit 107, and a fastener. The power storage device 103 will be described in detail later. 13(B) shows a cross section of the device 100. FIG. 13(B) shows a cross section of the area indicated by the dashed line AB in FIG. 13(A). FIG. 13(C) shows an enlarged view of the area enclosed by the dashed line in FIG. 13(B). As shown in FIG. 1, the surface of the sealing portion 121 protrudes from the surface of the plate 111 by a distance 137. In this way, the surface of the sealing portion 121 is made to protrude from the surfaces of the plates 111 and 112. By adopting this shape, when the electronic device 100 is placed on a desk or the like, the boards 111 and 112 The surface of the board 111 and the board 112 do not come into direct contact with the surface of a desk or the like, making the boards 111 and 112 less likely to break. This can be done.

[0048] The electronic device 100 shown in FIG. 1 includes a plate 111, a plate 112, and a plate 113 that is in contact with the plate 111 and the plate 112. The sealing portion 121 and the sealing portion 122 are provided so as to It is preferable that the housing has high airtightness. By increasing the airtightness of the housing, This can improve the waterproofing of the electronic device 100. In addition, it can prevent foreign matter from entering the housing. Therefore, the reliability of the electronic device 100 can be improved.

[0049] In addition, the electronic device 100 includes a plate 111 and a plate 112, and a sealing portion 121 and a sealing portion 122 fixed to the plate 111 and the plate 112. The fastener 131 may include a screw or the like. Alternatively, a ring or the like may be used as the fastener 131. For example, materials such as metal, ceramics, and resin can be used. For example, stainless steel, magnesium, aluminum, titanium, etc. can be used.

[0050] Alternatively, the electronic device 100 may be fixed by caulking the plates 111 and 112. For example, the electronic device 100 may be configured such that holes are provided in the plates 111 and 112 and screws are inserted into the holes. After inserting the material, it is deformed (caulked) and fixed in place, so-called rivets may be used for fixing. stomach.

[0051] It is preferable that the plates 111 and 112 have curved surfaces. By having such a configuration, the electronic device 100 can be shaped to fit the part where it is worn. In addition, it is preferable that the plates 111 and 112 are flexible. The plates 111 and 112 are flexible, so that the electronic device 100 can be easily attached and detached. Even if the above steps are repeated, the electronic device 100 and the plates 111 and 112 included in the electronic device 100 will not be damaged. It can make it less likely to break.

[0052] The plate 111 is preferably light-transmitting. For example, the plate 111 may be made of glass, quartz, or plastic. Plastic, flexible board, resin-based laminated film, paper containing fibrous materials, Examples of glass include barium borosilicate glass and aluminum Borosilicate glass or soda lime glass. Flexible plates, laminated films Examples of films and base films include the following: Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone Plastics such as polypropylene (PES) and polytetrafluoroethylene (PTFE) For example, synthetic resin such as acrylic resin may be used. may be polypropylene, polyester, polyvinyl fluoride, or polyvinyl chloride. Alternatively, for example, polyamide, polyimide, aramid, epoxy, or inorganic vapor deposition There are films and so on.

[0053] The plate 112 can be made of the material shown in the plate 111. Stainless steel, stainless steel foil plate, tungsten, tungsten foil Plates with a film, paper, or semiconductors (such as single crystal or silicon) may also be used.

[0054] Furthermore, the plate 112 may be made of a material having higher rigidity than the plate 111. For example, The plate 111 may be made of a stainless steel material. In order to prevent excessive warping or large torsional deformation of the power storage device 103, It also provides a reliable protection against the wearer's constant deformation when worn on the arm, i.e., bending in one direction. This leads to improved reliability.

[0055] It is preferable that the sealing portion 121 and the sealing portion 122 have elasticity. The sealing portion 122 is preferably flexible.

[0056] By providing the sealing portion 121 and the sealing portion 122, the electronic device 100 can be mounted on, for example, the board 11 Compared to 1 and plate 112, it can absorb the impact even when colliding with a harder substance. Therefore, a stronger structure can be achieved. Here, a harder material refers to a material having a higher hardness, for example. It is a high-value substance.

[0057] It is preferable that the sealing portions 121 and 122 have higher elasticity than the plate 111 . A material with higher elasticity is, for example, a material with lower hardness. The stopper 122 is preferably more flexible than the plate 111 .

[0058] In addition, the friction coefficient of the surfaces of the sealing portions 121 and 122 is set to be higher than that of the plates 111 and 112. By increasing the coefficient of friction, it is possible to, for example, When carrying the electronic device 100 or when wearing or removing the electronic device 100 from the body, the electronic device 100 may fall and be damaged. This can be suppressed.

[0059] The sealing portion 121 and the sealing portion 122 may be made of, for example, a resin. For example, an elastomer can be used.

[0060] Alternatively, the sealing portions 121 and 122 may be bellows-shaped or may have cutouts. The flexibility can be increased by bellows processing or by providing notches. For example, a metal with a bellows finish can be used. For example, processing can be done by stretching the material from a folded state to make it stretchable. For example, a metal that has been accordion-processed has multiple mountain folds and valley folds.

[0061] 2A, for example, the surface 141 of the sealing portion 122 and the surface of the plate 112 The surface 142 preferably has a smooth transition. For example, this means that there is little difference in level at the boundary, and that the number of concave or convex portions at the boundary is small. When the electronic device 100 is attached to the body or the like, the attachment portion 121 and the sealing portion 122 are It is preferable that the surface of the plate 112 that contacts the mounting portion be smoothly connected to the surface of the plate 112 that contacts the mounting portion. The smooth connection of these surfaces improves the ease of wearing.

[0062] As shown in FIG. 2(C), the cross section of the sealing portion 121 may have a rounded portion 136. By having such a structure, the wearing comfort may be improved.

[0063] At least a part of the display unit 102 is on the inner surface of the plate 111, that is, the surface that constitutes the inside of the housing. It is preferable that the display unit 102 is in contact with the display surface. It is also preferable that the display unit 102 is flexible. Since the display unit 102 is flexible, the shape of the display unit 102 can be adjusted to fit the shape of the inner surface of the plate 111. Furthermore, even if the plate 111 is deformed by an external force, the display unit This can prevent deterioration or destruction of 102.

[0064] Furthermore, a resin for adhesion may be provided between the display unit 102 and the plate 111. For example, An adhesive sheet may be attached to the plate 111, and the display unit 102 may be attached to the sheet.

[0065] In the cross section shown in FIG. 2(A), the cross section of the sealing portion 122 is elongated in the direction along the plate 111 or the plate 112. 3A, the cross section of the sealing portion 122 is short. The sealing portion 121 and the sealing portion 122 may be configured to be removable. By being removable, for example, a circuit or a power storage device connected to the display unit 102 can be installed inside the housing. When providing the above, the circuit, the power storage device, etc. can be easily attached or replaced.

[0066] A method for assembling the electronic device 100 shown in FIG. 1 will be described with reference to FIG. 4. To avoid complication, the display unit 102, the circuit board 104, etc. are omitted. A part of the sealing portion 121 is sandwiched between the plates 111 and 112. In the example shown in FIG. In this case, the two sealing portions 121 are set to contact two opposing sides of the plate 111 and the plate 112. In addition, parts of the two sealing portions 122 are sandwiched between the plates 111 and 112. In the example shown in FIG. 4, the two sealing portions 122 are provided on the two sides that are not sealed by the sealing portion 121. Here, the plates 111 and 112 and the sealing portion 121 and sealing portion 122 are provided so as to be in contact with each other. 22 may be fixed with an adhesive or the like. For example, an adhesive sheet or the like may be used. preferable.

[0067] Next, although not shown, the plates 111, 112, the sealing portion 121 and the sealing member 122 are fastened together using fasteners 131. If the fastening is sufficient in the above-mentioned adhesion step, the fastener 122 is fixed. There are cases where it is not necessary to provide 31.

[0068] 5, a groove is provided in the sealing portion 121, and the plates 111 and 112 are inserted into the groove. In this configuration, the sealing portion 121 is also formed by the plate 111 and the plate 112 and has a portion sandwiched between them. FIG. 6 shows a perspective view of the electronic device 100. In FIG. 6, a ring-shaped (belt-shaped) fastener 1 Here is an example using 31.

[0069] Furthermore, the sealing portion 121 and the sealing portion 122 may be integrated. 7, the sealing portion 121 may also function as the sealing portion 122. An example in which the end face is provided so as to contact four sides is shown here.

[0070] In the cross sections of the plates 111 and 112 in FIGS. 1 to 7, the ends are rectangular, and in this case, they are rectangular. Although an example having a corner shape is shown, the corners of the plates 111 and 112 may be rounded.

[0071] The electronic device 100 preferably includes a power storage device 103. FIG. 8 shows the electronic device shown in FIG. 8 shows an example in which the device 100 has a power storage device 103. The electronic device 100 shown in FIG. , the plate 112, the sealing portion 121, the sealing portion 122, the display portion 102, and the circuit board 104. 8A shows a cross section of the electronic device 100, and FIG. ) shows a cross section of the portion indicated by the dashed line AB in FIG. 8(A).

[0072] The electronic device 100 preferably includes a circuit portion 107. The power storage device 103 includes: It is preferable to electrically connect the display unit 102 via the circuit board 104 and the circuit unit 107. Moreover, the power storage device 103 may be directly connected to the circuit board 104.

[0073] The power storage device 103 preferably has flexibility. Details will be provided below.

[0074] It is preferable that at least a part of the electricity storage device 103 contacts the plate 112. It is preferable that the surfaces of the storage device 103 and the display unit 102 that come into contact with each other are slippery. It is preferable to provide a space between the electronic device 103 and the display unit 102. As a result, when an external force such as bending is applied to the electronic device 100, the power storage device 103 and the display This is preferable because the portion 102 and the portion 103 can bend independently. The exterior body of the display device 3 and the film on which the display element is provided in the display unit 102 are made of different materials. If there is a difference, the way the material bends in response to an external force, specifically the change in the radius of curvature, may differ. In such a case, if the power storage device 103 and the display unit 102 are not easily slippery, the exterior body of the power storage device 103 Or, if distortion occurs in any of the films on which the display elements are provided in the display unit 102, By providing a space between the power storage device 103 and the display unit 102, distortion can be reduced. The occurrence can be suppressed.

[0075] The power storage device 103 is preferably arranged along an area of ​​the plate 112 with a large radius of curvature. I wish.

[0076] As shown in FIG. 9, the electronic device 100 has a display unit 102 and a power storage device 103. 9 is different from FIG. 8 in that it has a plate 113. Plate The material shown for the plate 112 can be used for the plate 113. For example, a flexible plate, a laminated film using a resin, a base film, etc. may be used. More preferable.

[0077] Here, it is preferable that the power storage device 103 and the display unit 102 are arranged in a position where they partially overlap each other. By placing them in a position where they overlap partially or completely, you can increase the freedom of the internal layout. It may be possible to do this.

[0078] 8, 9, 10, and 13, the display unit 102 and the power storage device 103 are stacked. 14, the display unit 102 and the power storage device 103 are arranged side by side. 14 is different from FIG. 8 in that the power storage device 103 is provided alongside the display unit 102. In the cross section shown in FIG. 14(A), the plate 111, the plate 112, the sealing portion 121 and the sealing The difference is that the power storage device 103 and the display unit 10 are located near the end of the housing formed by the power storage device 103 and the display unit 10. By arranging the two side-by-side, for example, the electronic device 100 can be made thinner. This may improve the wearing comfort.

[0079] As shown in FIG. 15, the electronic device 100 includes a power storage device 103, a power storage device 106, and Here, the power storage device 103 preferably has flexibility. For example, a thin storage battery using a laminate film for the exterior body can be used as 103. The power storage device 106 does not need to be flexible. For example, the power storage device 106 may have a coin-type (or Battery types include (button type), square type, cylindrical type, etc. The device 106 may be, for example, a storage device for storing data when the electronic device 100 has a memory or the like. The power storage device 106 can be used as a battery. For coin-type batteries, see embodiment 3. do.

[0080] The electronic device 100 shown in FIGS. 1 to 15 has a cross section of the plate 112 with a radius of curvature of, for example, It is preferable that the distance is 10 mm or more, more preferably 5 mm or more. In order to make the child device 100 into a shape that is easy to wear on the arm, for example, the cross section of the plate 112 is The radius of curvature is preferably 20 mm or more, and more preferably 15 mm or more. In addition, it is preferable that the electronic device 100 has a shape that encloses more than half of the cross section of the arm. .

[0081] Alternatively, as shown in the example of FIG. 17, the electronic device 100 may have an elliptical cross section. FIG. 17(A) shows a cross-sectional view of the electronic device 100. FIG. 17(B) shows a broken line of FIG. 17(A). 17 shows a cross section of the area indicated by the line AB. The electronic device 100 shown in FIG. 17 has a plate 111 and a plate 11 2, a display unit 102, a sealing unit 121, and a circuit board 104. 100 may have a fastener 132. In FIG. 17(A), the plates 111 and 112 are oval. An example having a cross section of a shape is shown.

[0082] Furthermore, the electronic device 100 does not have to have a shape that covers the arm. The electronic device 100 shown in FIG. 16 can be used by being worn on the arm, for example. The electronic device 100 is worn on the wrist, and a part of the electronic device 100 is attached to another wearable device such as a wristwatch. It can also be used by fixing it to mobile devices or wearable accessories.

[0083] The electronic device 100 may be attached to a part of the body other than the arm, such as a leg or a finger. The electronic device 100 may be fixed to an arm, a leg, or the like using a belt, for example.

[0084] 10 is different from the electronic device 100 shown in FIG. 2 in that it has a housing 126. The electronic device 100 shown in FIG. 10 includes a plate 111, a plate 112, a sealing portion 121, and The electronic device includes a sealing portion 122, a display portion 102, a circuit board 104, and a housing 126. The housing 126 preferably includes a power storage device 103 therein. FIG. 10B shows a cross section of the electronic device 100, and FIG. 10B shows a cross section of the portion indicated by the dashed line AB in FIG. 10A. A cross section is shown.

[0085] The electronic device 100 shown in FIG. 10 includes a plate 111, a plate 112, and a plate connected to the plate 111 and the plate 112. a housing including a sealing portion 121 and a sealing portion 122 provided so as to 6 and has.

[0086] The housing 126 is preferably flexible. The housing 126 may be made of the same material as the sealing portion 121 and the sealing portion 122, for example. The same materials can be used.

[0087] The housing 126 has a first region that is fixed to the housing and a second region that is not fixed to the housing. It is preferable.

[0088] An example of a method for manufacturing the electronic device 100 will be described below.

[0089] First, the plate 111, the plate 112, the sealing portion 121, and the sealing portion 122 are prepared.

[0090] Next, the electricity storage device 103 to be attached to the area of ​​the plate 112 with the large radius of curvature is prepared.

[0091] The power storage device 103 preferably has a curved shape. This allows the storage device 103 to be provided in an area of ​​the plate 112 with a large radius of curvature. The power storage device 103 is preferably flexible. It is a thin and flexible film, and is applied to the curved surface of the area with a large radius of curvature of the plate 112. When the electronic device 100 is worn on the arm, the plate 112 can be deformed accordingly. The power storage device 103 can be modified to follow the changes. It is preferable to use a lithium ion secondary battery.

[0092] In this embodiment, the flexible power storage device 103 is an exterior body made of a film. An example of using a thin secondary battery is shown in Fig. 19. 19. The cross sections cut along the dashed lines A1-A2 and B1-B2 in FIG. 19 are shown in FIG. 2. 0(A) and 20(B).

[0093] The thin secondary battery includes a sheet-shaped positive electrode 203, a sheet-shaped negative electrode 206, and a separator 207. 07, an electrolyte solution 208, an exterior body 209 made of a film, and a positive electrode lead electrode 510. The positive electrode 203 and the negative electrode 204 are disposed in the outer casing 209. A separator 207 is provided between the battery 201 and the battery 6. The exterior body 209 contains an electrolyte 208 The positive electrode 203 has a positive electrode current collector 201 and a positive electrode active material layer 202. The negative electrode 206 includes a negative electrode current collector 204 and a negative electrode active material layer 205 .

[0094] The materials for the positive electrode current collector 201 and the negative electrode current collector 204 include stainless steel, gold, platinum, zinc, and the like. Metals such as lead, iron, nickel, copper, aluminum, titanium, tantalum, and their alloys For example, a material with high conductivity that does not alloy with carrier ions such as lithium can be used. In addition, the heat resistance of silicon, titanium, neodymium, scandium, molybdenum, etc. has been improved. Aluminum alloys containing elements that react with silicon can be used. Alternatively, the metal element may be formed from a metal element that reacts with silicon to form a silicide. The metal elements that form the alloy include zirconium, titanium, hafnium, vanadium, niobium, There are tantalum, chromium, molybdenum, tungsten, cobalt, nickel, etc. Positive electrode current collector The body 201 and the negative electrode current collector 204 may be in the form of a foil, a plate (sheet), a mesh, a cylinder, or a coil. The positive electrode may be in the form of a punched metal, an expanded metal, or the like. The current collector 201 and the negative electrode current collector 204 have a thickness of 10 μm or more and 30 μm or less. It would be good to do so.

[0095] The positive electrode active material layer 202 is made of a material into which lithium ions can be inserted and extracted. For example, an olivine-type crystal structure, a layered rock salt-type crystal structure, or a sintered rock salt structure can be used. There are lithium-containing materials with a pinel-type crystal structure. FeO2, LiCoO2, LiNiO2, LiMn2O4, V2O5, Cr2O5, Mn Compounds such as O2 can be used.

[0096] or a lithium-containing composite phosphate (general formula LiMPO4, where M is one or more of Fe(II), Mn( II), Co(II), Ni(II))) can be used. Representative examples of the general formula LiM PO4 include LiFePO4, LiNiPO4, LiCoPO4, LiMn PO4, LiFe , , ,

[0098] , , , , , i ,

[0097] , Ni b PO4, LiFe a Co b PO4, LiFe a Mn b PO4, LiNi a Co b PO4, LiNi a Mn b PO4 (a + b is 1 or less, 0 < a < 1, 0 < b < 1), LiFe c Ni d Co e PO, LiFe c Ni d Mn e PO4, LiNi c Co d Mn e PO4 (c + d + e is 1 or less, 0 < c < 1, 0 < d < 1, 0 < e < 1), L iFe f Ni<00000​​​​​​​​​​​​​​​​​​​Materials such as LiCoO2, LiNiO2, LiMnO2, Li2MnO3, and LiN i 0.8 Co 0.2 NiCo-based materials such as O2 (general formula: LiNi x Co 1-x O2(0 <x<1))、LiNi 0.5 Mn 0.5 NiMn-based materials such as O2 (general formula: LiNi x Mn 1-x O2(0 <x<1))、LiNi 1 / 3 Mn 1 / 3 Co 1 / 3 Ni such as O2 MnCo-based materials (also known as NMC) have the general formula LiNi x Mn y Co 1-x-y O2(x >0, y>0, x+y<1). Furthermore, Li(Ni 0.8 Co 0.15 Al 0. 05 )O2, Li2MnO3-LiMO2 (M=Co, Ni, Mn), etc.

[0099] Examples of lithium-containing materials having a spinel-type crystal structure include LiMn2O4, Li 1+x Mn 2-x O4, LiMn 2-x Al x O4(0 <x<2)、LiMn 1.5 Ni 0.5 There are O4 and so on.

[0100] Lithium-containing materials with spinel-type crystal structures containing manganese, such as LiMn2O4, , a small amount of lithium nickel oxide (LiNiO2 or LiNi 1-x M x O2 (M = Co, Al Mixing these materials has the advantage of suppressing the elution of manganese and the decomposition of the electrolyte. This is preferable.

[0101] In addition, the positive electrode active material is a compound of the general formula Li (2-j) MSiO4 (M is Fe(II), M Lithium-containing materials such as one or more of n(II), Co(II), and Ni(II), where 0≦j≦2 The general formula Li (2-j) A typical example of MSiO4 is Li (2- j) FeSiO4, Li (2-j) NiSiO4, Li (2-j) CoSiO4, Li ( 2-j) MnSiO4, Li (2-j) Fe k Ni l SiO4, Li (2-j) Fe k C o l SiO4, Li (2-j) Fe k Mn l SiO4, Li (2-j) Ni k Co l Si O4, Li (2-j) Ni k Mn l SiO4 (k+l is less than 1, 0 <k<1、0<l<1 ), Li (2-j) Fe m Ni n Co q SiO4, Li (2-j) Fe m Ni n Mn q S iO4, Li (2-j) Ni m Co n Mn q SiO4 (m+n+q is 1 or less, 0 <m<1 , 0 <n<1、0<q<1)、Li (2-j) Fe r Ni s Co t Mn u SiO4(r+ s + t + u is 1 or less, 0 < r < 1, 0 < s < 1, 0 < t < 1, 0 < u < 1), etc. of lithium There is a compound.

[0102] Also, as the positive electrode active material, A x M2(XO4)3 (A = Li, Na, Mg, M = Fe, Mn, Ti, V, Nb, Al, X = S, P, Mo, W, As, Si) represented by the general formula NASICON type compounds can be used. Examples of NASICON type compounds include Fe2(MnO4 )3, Fe2(SO4)3, Li3Fe2(PO4)3, etc. Also, as the positive electrode active material Li2MPO4F, Li2MP2O7, Li5MO4 (M = Fe, Mn) represented by the general formula Compounds, perovskite type fluorides such as NaF3, FeF3, metal chalcogenides (sulfides, selenides, tellurides) such as TiS2, MoS 2, etc., materials having a reverse spinel type crystal structure such as LiMVO4, vanadium oxide systems (V2O5, V6O , LiV 13 , etc. 3O8, etc.), manganese oxides, organic sulfur compounds, etc. can be used. <00​​​​​​​​​​​​​​​​​​​and high specific capacity per volume (3860mAh / g and 2062mAh / cm, respectively). 3 ) and is therefore preferable.

[0106] Carbon materials include graphite, easily graphitizable carbon (soft carbon), and non-graphitizable carbon (hard carbon). Examples include graphene, carbon black, carbon nanotubes, graphene, and graphene-based nanofibers.

[0107] As graphite, mesocarbon microbeads (MCMB), coke-based artificial graphite, These include artificial graphite such as titanium-based artificial graphite, and natural graphite such as spherical natural graphite.

[0108] Graphite is formed when lithium ions are inserted into graphite (when lithium-graphite intercalation compounds are formed) It shows a low potential similar to that of lithium metal (0.3 V or less vs. Li / Li + ).this This allows lithium-ion secondary batteries to exhibit high operating voltages. It has a relatively high capacity per unit volume, small volume expansion, is inexpensive, and is cheaper than lithium metal. This is preferable because it has advantages such as high safety.

[0109] As a negative electrode active material, it can carry out charge-discharge reactions by alloying and dealloying reactions with lithium. For example, if the carrier ion is a lithium ion, Mg, Ca, Al, Si, Ge, Sn, Pb, Sb, As, Bi, Ag, Au, Materials containing at least one of Zn, Cd, Hg, and In can be used. These elements have a larger capacity than carbon, and silicon in particular has a theoretical capacity of 4200mA. h / g, which is remarkably high. For this reason, it is preferable to use silicon as the negative electrode active material. Examples of alloy materials using such elements include Mg2Si, Mg2Ge, and Mg2Sn , SnS2, V2Sn3, FeSn2, CoSn2, Ni3Sn2, Cu6Sn5, Ag 3Sn, Ag3Sb, Ni2MnSb, CeSb3, LaSn3, La3Co2Sn7, Examples include CoSb3, InSb, and SbSn.

[0110] In addition, the negative electrode active material is SiO, SnO, SnO2, titanium dioxide (TiO2), lithium Lithium Titanium Oxide (Li4Ti5O 12 ), lithium-graphite intercalation compound (Li x C6) , niobium pentoxide (Nb2O5), tungsten oxide (WO2), molybdenum oxide (MoO 2) and other oxides can be used.

[0111] In addition, the negative electrode active material is a composite nitride of lithium and transition metals, which has a Li3N structure. つLi 3-x M x N (M=Co, Ni, Cu) can be used. For example, Li 2. 6Co 0.4 N3 has a large charge / discharge capacity (900mAh / g, 1890mAh / cm 3 )of Shown and preferred.

[0112] When a composite nitride of lithium and transition metals is used, lithium ions are included in the negative electrode active material, As a positive electrode active material, materials that do not contain lithium ions, such as V2O5 and Cr3O8, are used. In addition, when a material containing lithium ions is used as the positive electrode active material, However, by first removing the lithium ions contained in the positive electrode active material, As the nitride, a complex nitride of lithium and a transition metal can be used.

[0113] In addition, a material that undergoes a conversion reaction can also be used as the negative electrode active material. For example, lithium oxides such as cobalt oxide (CoO), nickel oxide (NiO), and iron oxide (FeO) A transition metal oxide that does not undergo an alloying reaction with the metal may be used as the negative electrode active material. Further materials that can react include Fe2O3, CuO, Cu2O, RuO2, Cr2 Oxides such as O3, CoS 0.89 , sulfides such as NiS and CuS, Zn3N2, Cu3N, Nitrides such as Ge3N4, phosphides such as NiP2, FeP2, CoP3, FeF3, BiF This also occurs with fluorides such as 3. Note that the potential of the above fluorides is high, so they are not used as positive electrode active materials. It's fine.

[0114] In addition to the above-mentioned negative electrode active material, the negative electrode active material layer 205 contains a material for improving the adhesion of the active material. and a conductive additive for increasing the conductivity of the negative electrode active material layer 205. That's fine.

[0115] The electrolytic solution 208 is an electrolyte capable of moving carrier ions. The electrolyte is made of a material that has lithium ions as carrier ions. are LiPF6, LiClO4, Li(FSO2)2N, LiAsF6, LiBF4, L Lithium such as iCF3SO3, Li(CF3SO2)2N, Li(C2F5SO2)2N, etc. These electrolytes may be used alone or in any combination of two or more. In order to make the reaction product more stable, vinylene may be added to the electrolyte. A small amount (1 wt%) of carbonate (VC) may be added to reduce decomposition of the electrolyte. .

[0116] The solvent of the electrolyte 208 is a material that allows the movement of carrier ions. The solvent for the solution is preferably an aprotic organic solvent. Representative examples of aprotic organic solvents are: Examples include ethylene carbonate (EC), propylene carbonate, and dimethyl carbonate. diethyl carbonate (DEC), γ-butyrolactone, acetonitrile, dimethicone Examples of the methyl ether include methyl ethane and tetrahydrofuran, and one or more of these can be used. In addition, by using a polymer material that gels as a solvent for the electrolyte, it is possible to reduce leakage and other issues. This increases safety. It also makes it possible to make storage batteries thinner and lighter. Typical examples of materials are silicone gel, acrylic gel, acrylonitrile gel, and polyethylene gel. Styrene oxide gel, polypropylene oxide gel, fluorine polymer gel, etc. In addition, ionic liquids (room-temperature molten salts) that are flame-retardant and non-volatile are used as solvents for electrolytes. ) can be used to prevent the internal temperature from rising due to an internal short circuit or overcharging of the battery. Even if the temperature rises, it can prevent the battery from exploding or catching fire.

[0117] The separator 207 may be made of cellulose (paper), polypropylene, or polyethylene. Insulators such as polypropylene and polyethylene can be used. , holes are provided.

[0118] The secondary battery has a thin, flexible film (for example, laminate film) as its exterior. A laminate film is a laminated film made of a base film and an adhesive synthetic resin film. It refers to a film or a laminated film of two or more types. The base film is PET or PB. Polyesters such as nylon 6 and nylon 66, polyamides such as inorganic vapor deposition films, As adhesive synthetic films, polyolefins such as PE and PP can be used. The laminate film may be made of a material such as acrylic resin, epoxy resin, or the like. The film is laminated to the object to be treated by thermocompression bonding using a laminating device. It is preferable to apply an anchor coating agent as a pretreatment before the lamination process. The anchor coating agent can strengthen the adhesion between the film and the object to be treated. A socyanate-based material may be used.

[0119] Regarding the method for manufacturing a thin secondary battery using an exterior body made of a film, see Embodiment 3. Refer to.

[0120] The thin secondary battery thus obtained is attached starting from the area of ​​the plate 112 with the larger radius of curvature. By attaching the plate 112 from the area with the larger radius of curvature, damage to the secondary battery when it is fixed to the plate 112 is reduced. This can reduce the risk of infection.

[0121] Next, a display module to be attached onto the power storage device 103 is prepared.

[0122] The display unit 102 is flexible. The display unit 102 has a display element on a flexible film. Has children.

[0123] As a method for producing a display element on a flexible film, There are two methods: one is to directly fabricate a display element on a substrate, and the other is to fabricate a display element on a rigid substrate such as a glass substrate. After forming the layer containing the compound, the substrate is removed by etching or polishing, and then the display element is a method of bonding a layer containing the polymer to a flexible film, or a method of bonding a rigid substrate such as a glass substrate A peeling layer is provided on the substrate, and a layer including a display element is formed thereon, and then the peeling layer is used to provide rigidity. The substrate and the layer including the display element are separated, and the layer including the display element and a flexible film are then bonded to each other. There are methods for gluing.

[0124] In this embodiment, the display unit 102 is an active matrix type display capable of high-definition display. To make the display device, heat treatment at 400°C or higher is possible, and the reliability of the display element is high. A method for manufacturing the film, in other words, a method for forming a peeling layer on a substrate having rigidity such as a glass substrate, The technology described in JP-A-2003-174153 is used.

[0125] The technology described in JP-A-2003-174153 allows for the production of transistors with polysilicon as the active layer. and transistors using oxide semiconductor layers on flexible substrates or films. Furthermore, by using these transistors as switching elements, An electroluminescence element (EL element) is provided.

[0126] The general structure of an EL element is a pair of electrodes containing a light-emitting organic or inorganic compound. By applying a voltage to the element, Electrons and holes are injected and transported from a pair of electrodes to the light-emitting layer, respectively. The recombination of these carriers (electrons and holes) produces light-emitting organic compounds or The inorganic compound forms an excited state, and emits light when the excited state returns to the ground state.

[0127] The types of excited states that organic compounds form are singlet excited states and triplet excited states. The emission from the singlet excited state is called fluorescence, and the emission from the triplet excited state is called phosphorescence. It is called.

[0128] Such light-emitting elements are usually formed as thin films from submicrons to several microns in thickness. The major advantage is that it can be manufactured in a lightweight form. The response time is only microseconds or less, making it extremely fast. Another feature is that sufficient light emission can be obtained with a DC voltage of several volts to several tens of volts. Therefore, the power consumption is relatively low.

[0129] EL elements have a better viewing angle than LCD elements, and when the display area has a curved surface It is preferable as a display element of the display unit 102. In addition, it is possible to provide a backlight like a liquid crystal element. This reduces power consumption and the number of components, resulting in a total thickness EL elements are preferable as display elements for the display unit 102 because they can be made thinner.

[0130] The method for producing a display element on a flexible film is described above (JP-A 2003- 174153). In addition, the manufacturing method and materials of the EL element are not limited to known methods. Since known manufacturing methods and materials can be used, the explanation will be omitted here.

[0131] The display device used for the display unit 102 may be a simple monochromatic light source or a display of only numbers. Therefore, a passive matrix type display device is sufficient. In this case, If a display element is produced on a flexible film by a production method other than the technology described in good.

[0132] The display module obtained by the above method is attached to the power storage device 103. The display unit 102 is electrically connected to the plate 111, the plate 112, the sealing unit 121, and The housing is constructed using the sealing portion 122. The housing is assembled so that a display module and the like are installed inside the housing. By assembling the electronic device 100 shown in FIG. 11(B), the electronic device 10 In order to improve the appearance of the device, the display unit 102 is covered with a metal cover, a plastic cover, or , may be covered with a rubber cover.

[0133] When the electronic device 100 is provided with a display unit 102, the screen size is set to a value that can be arranged on the board 112. There is no particular limitation as long as the size is correct. For example, when worn on the wrist, the size should be around the wrist circumference of an adult. The screen size is 18cm±5cm, so the maximum screen size is 23cm around the wrist x 23cm from the wrist to the elbow. The distance between an adult's wrist and elbow is 1 foot (30.48 cm). The cylindrical plate 112 is 23 cm x 30.48 cm and can be placed on the wrist. This can be said to be the maximum screen size of the display unit of the device 100. Note that the screen size here is the maximum size of the display unit of the device 100. It refers to the size when the screen is flat, not the size when it has multiple screens. The display units may be provided in one electronic device, for example, a second display unit smaller than the first display unit. The dimensions of the board 112 are larger than the screen size of the display unit. When an EL element is used, if the screen size can be placed on the support structure, For example, the total weight of the display panel and FPC alone can be 1 g or more and less than 10 g. The boards 111 and 112 are, for example, 5 cm to 30 cm in length and 1 cm to 30 cm in width. It should be less than 5cm.

[0134] The thinnest part of the electronic device 100 provided with the display module is 5 mm or less. The thickest part of the electronic device 100 is the connection between the display panel and the FPC. part, but can be less than 1 cm.

[0135] Additionally, the total weight of the electronic device 100 can be less than 100 g.

[0136] Furthermore, as shown in the cross-sectional view of FIG. 2(A), when the electronic device 100 is worn on the arm, The device can be fitted to the arm by moving a part of the support structure in the direction of arrow 105. The total weight of the child device 100 is less than 100 g, preferably 50 g or less, and the thickest part is 1 This makes it possible to provide electronic devices that are thin and lightweight, measuring less than cm.

[0137] 27A and 27B show examples of how the electronic device 100 is worn. FIG. 27A shows how the electronic device 100 is worn on the arm (wrist). 27(C) shows an example in which the electronic device 100 is worn on the upper part of the arm. FIG. 27(B) shows an example of the electronic device 100 that is a wristband-type device.

[0138] For example, in this specification, a display element, a display device which is a device having a display element, a light-emitting device, A light-emitting device, which is a device having an element and a light-emitting element, can be used in various forms or in various The display element, the display device, the light-emitting element or the light-emitting device can have, for example, EL (electroluminescence) elements (EL elements containing organic and inorganic materials, organic EL elements) LEDs (white LEDs, red LEDs, green LEDs, blue LEDs, etc.) , transistors (transistors that emit light according to current), electron-emitting devices, liquid crystal devices, electrons Ink, electrophoretic element, grating light valve (GLV), plasma display (PDP), display element using MEMS (microelectromechanical systems) Digital Micromirror Device (DMD), DMS (Digital MicroShutter) MIRASOL (registered trademark), IMOD (Interference Modulation shutter-type MEMS display elements, optical interference-type MEMS display elements, Using electrowetting elements, piezoelectric ceramic displays, and carbon nanotubes In addition to these, it has at least one of an electric or magnetic function. Even if the display medium has a variable contrast, brightness, reflectance, transmittance, etc. depending on the use, An example of a display device using an EL element is an EL display. An example of a display device using an emission element is a field emission display (FED) ) or SED type flat panel display (SED: Surface-conduction Electron-emitter Displays (ELDs) are also available. An example of a display device is a liquid crystal display (transmissive liquid crystal display, semi-transmissive liquid crystal display, etc.). LCD, reflective LCD, direct-view LCD, projection LCD Display using electronic ink, electronic liquid powder (registered trademark), or electrophoretic element An example of such a device is electronic paper. In order to realize a liquid crystal display, a part or all of the pixel electrodes are used as reflective electrodes. For example, a part or all of the pixel electrodes may be made of aluminum. In this case, the reflective electrode may have a thickness of 100 μm or 100 μm. It is also possible to provide a memory circuit such as RAM, which further reduces power consumption. When using an LED, a glass substrate is placed under the LED electrode and nitride semiconductor. Graphene or graphite may be arranged in layers. In this way, by providing graphene or graphite, On top of this, nitride semiconductors, such as n-type GaN semiconductor layers having crystallinity, can be easily formed. Furthermore, a p-type GaN semiconductor layer having crystals can be provided on the above, It is possible to construct an LED. Note that graphene and graphite are n-type crystalline An AlN layer may be provided between the GaN semiconductor layer. The layer may be deposited by MOCVD. However, the provision of graphene The GaN semiconductor layer can also be formed by sputtering.

[0139] In addition to the display device, the electronic device according to one embodiment of the present invention may also include other semiconductor circuits, such as an overcharge It also includes a control circuit to prevent this, as well as sensors such as an image sensor, gyro sensor, and acceleration sensor. It may also be equipped with a sensor, a touch panel, etc. It may also be used to measure pulse and surface temperature by touching a part of the human body. It may also be equipped with sensors for measuring blood pressure, blood oxygen concentration, etc. By incorporating an image sensor in the camera, the captured image can be displayed on a display device. By incorporating sensors such as gyro sensors and acceleration sensors, it is possible to It can save power by switching between on and off states depending on the orientation and movement. By installing a touch panel, the electronic device can be operated by touching a desired position on the touch panel. In addition to the display device, the above-described configuration can also include a By installing memory and a CPU, it is also possible to create a wearable computer.

[0140] Furthermore, the electronic device of one embodiment of the present invention can be used as a display unit of a wrist-worn electronic device, and the display unit can be used as a display unit of a conventional mobile phone. By using both the display portion of an information terminal and the electronic device of one embodiment of the present invention as a sub-display, It can also function as a

[0141] This embodiment mode can be freely combined with other embodiment modes.

[0142] (Embodiment 2) In this embodiment, an example in which a power storage device is charged by wireless power feeding will be described. For wireless power supply, electric fields, magnetic fields, electromagnetic waves, etc. can be used. The receiver may be an antenna, a coil, or the like.

[0143] The electronic device according to one embodiment of the present invention receives an electric field, a magnetic field, an electromagnetic wave, or the like from an antenna, a coil, or the like. In addition, the electronic device of one embodiment of the present invention preferably includes a capacitor for charging. It is preferable to have a sensor.

[0144] By using a coupling coil and a coupling capacitor, it is possible to charge the storage device without contact. In addition, the coupling coil can be changed to an antenna. Here, a secondary battery is used as the power storage device. The primary coil of the charger and the secondary coil of the electronic device are magnetically coupled to each other. The AC magnetic field generated by the primary coil generates a voltage in the secondary coil using electromagnetic induction. Charging is achieved by transmitting power to the secondary coil without contact. Since it is preferable to provide the coil in contact with the flexible film, the coil of the electronic device is also It is preferable to use a coil provided in an electronic device as an antenna. That's fine.

[0145] When an antenna is provided on the secondary battery of a wrist-worn electronic device with a display module, The device is not limited to charging a secondary battery by contact, but also has a memory and can transmit and receive electronic data. Or, by providing a GPS function, you can acquire location information and GPS time and display the location and clock. An antenna may be provided that can be used for such purposes.

[0146] For safety reasons, the input / output terminals for charging or discharging the secondary battery are exposed, as they may come into contact with parts of the human body. If the input / output terminals are exposed, rain or other water may damage the input / output terminals. There is a risk of short-circuiting the components, or electric shock if the input / output terminals come into contact with the human body. If so, the input / output terminals can be configured not to be exposed on the surface of the electronic device.

[0147] Note that the present invention is the same as that of the first embodiment except that an antenna, a coil, and a wireless power supply converter are provided. Therefore, other detailed explanations will be omitted here.

[0148] According to the first embodiment, a power storage device, here a secondary battery, is fixed on the plate, and a display is placed on the secondary battery. The secondary battery preferably has a curved shape. The secondary battery is preferably flexible. The wireless power converter and antenna are also installed so that they overlap part of the display. Fix.

[0149] The wireless power supply converter and antenna weigh less than 10 g, and the total weight is almost the same as in the first embodiment. The weight can be kept almost the same.

[0150] FIG. 18 is a schematic diagram of an electronic device 400 having an antenna (not shown) and a charger 401. When the electronic device 400 is placed on the charger 401, power is supplied from the antenna of the charger 401. can be supplied to the electronic device 400 to charge the secondary battery of the electronic device 400.

[0151] In addition, information such as the remaining charge and the time remaining until full charge is displayed on the display of the electronic device 400. It is possible to display it.

[0152] This embodiment mode can be freely combined with other embodiment modes.

[0153] (Embodiment 3) In this embodiment, the manufacturing method of the thin storage battery shown in Embodiment 1 and the manufacturing method of the coin-type storage battery will be described. An example of the structure will be described.

[0154] [Method for manufacturing thin secondary batteries] Regarding a method for manufacturing a thin secondary battery using an exterior body made of a film shown in embodiment 1, FIG. 19 shows an external view of a thin secondary battery. The cross sections cut along the dashed line B1-B2 are shown in Fig. 20(A) and Fig. 20(B), respectively. Shown below.

[0155] A method for manufacturing a thin secondary battery will be described.

[0156] The separator 207 is processed into a bag shape and encases either the positive electrode 203 or the negative electrode 206. For example, as shown in FIG. 21(A), the positive electrode 203 is sandwiched between the electrodes. The separator 207 is folded in half so that the sealing portion 5 is formed outside the area overlapping with the positive electrode 203. By sealing with 14, the positive electrode 203 can be reliably supported within the separator 207. Then, as shown in FIG. 21(B), the positive electrode 203 and the negative electrode 204 wrapped in the separator 207 are The electrodes 206 are alternately stacked and placed inside the exterior body 209 to form a thin secondary battery. It is good to form.

[0157] FIG. 22(B) shows an example in which a current collector is welded to a lead electrode. 1 is welded to the positive electrode lead electrode 510. The positive electrode current collector 201 is welded to the positive electrode lead electrode 510 in the welding region 512 using a 22(B) , the thin secondary battery can be easily removed from the outside after fabrication. This can alleviate the stress that occurs when force is applied, thereby improving the reliability of thin secondary batteries. This can be done.

[0158] In the thin secondary battery shown in FIGS. 21 and 22, the positive electrode lead electrode 510 is The positive electrode current collector 201 of the negative electrode lead electrode 511 is connected to the negative electrode current collector of the negative electrode 206. 204 and 205 are ultrasonically bonded to each other. The current collector 201 and the negative electrode current collector 204 can also serve as a lead electrode. The positive electrode current collector 201 and the negative electrode current collector 204 are partially exposed to the outside from the outer casing 209. It may be arranged so that

[0159] In addition, in FIG. 21, the positive electrode lead electrode 510 and the negative electrode lead electrode 511 are arranged on the same side. However, as shown in FIG. 23, the positive electrode lead electrode 510 and the negative electrode lead electrode 511 are connected to different sides. In this way, the storage battery according to one aspect of the present invention allows the lead electrodes to be freely arranged. Therefore, the degree of design freedom is high. In addition, the storage battery of one embodiment of the present invention can be used in the production of a product. It can improve sexuality.

[0160] In the thin storage battery 200, the exterior body 209 is made of, for example, polyethylene or polypropylene. A film made of a material such as aluminum, polycarbonate, ionomer, or polyamide is applied to the film. A thin metal film made of aluminum, stainless steel, copper, nickel or the like with excellent flexibility is provided, and the thin metal film is further provided. On top of that, an insulating synthetic resin film such as polyamide resin or polyester resin is applied as the outer surface of the exterior body. A film having a three-layer structure can be used.

[0161] In addition, in FIG. 21, the number of pairs of opposing positive and negative electrodes is set to five as an example, but of course, Of course, the number of electrode pairs is not limited to five, and may be more or less. In this case, a storage battery with a larger capacity can be obtained. In this case, the storage battery can be made thinner and more flexible.

[0162] In the above configuration, the exterior body 209 of the secondary battery has a curvature radius of 30 mm or more, preferably a curvature radius of 100 mm or more. The film that is the exterior of the secondary battery can be deformed within a radius of 10 mm or more. In the case of a secondary battery with a laminated structure consisting of one or two sheets, the cross section of the curved battery The surface structure is sandwiched between two curves of the film exterior.

[0163] The radius of curvature of a surface will be explained with reference to FIG. 24. In FIG. 24(A), the curved surface 170 On a plane 1701 cutting through 0, a part of a curve 1702 included in a surface 1700 is cut into a circle. Approximate the arc, and let the radius of the circle be the radius of curvature 1703 and the center of the circle be the center of curvature 1704. FIG. 24(B) shows a top view of the curved surface 1700. FIG. 24(C) shows the curved surface 1700 on the flat surface 1701. The cross section of 1700 is shown. When cutting a curved surface with a plane, the angle of the plane to the curved surface is The radius of curvature of the curve that appears in the cross section will differ depending on the cutting position and the cutting direction. etc., the smallest radius of curvature is taken as the radius of curvature of the surface.

[0164] The secondary battery is curved, sandwiching electrodes, electrolyte, etc., 1805 between two films as the exterior body. In this case, the radius of curvature 1802 of the film 1801 on the side closer to the center of curvature 1800 of the secondary battery is smaller than the radius of curvature 1804 of the film 1803 on the side farther from the center of curvature 1800 ( (Figure 25(A)). When a secondary battery is bent to make its cross section arc-shaped, the center of curvature is 180°. The surface of the film is subjected to compressive stress, and the surface of the film far from the center of curvature 180° is subjected to tension. The pattern formed by the recesses or protrusions on the surface of the exterior body is subjected to tension stress (Fig. 25(B)). When formed, even if compressive stress or tensile stress is applied, the effect of strain is not Therefore, the secondary battery can be mounted on the exterior body near the center of curvature. The radius of curvature can be deformed within a range of 30 mm or more, preferably 10 mm or more.

[0165] The cross-sectional shape of the secondary battery is not limited to a simple arc shape, and may be a shape having a partial arc. For example, the shape shown in FIG. 25(C), a wave shape (FIG. 25(D)), an S-shape, etc. When the curved surface of the secondary battery has a shape with multiple centers of curvature, Among the radii of curvature at each of the centers of curvature, the surface with the smallest radius of curvature is 2 The radius of curvature of the outer casing closest to the center of curvature of the outer casing is 30 mm or more, preferably 10 mm The secondary battery can be deformed within the above range.

[0166] After the secondary battery is fabricated, it is preferable to perform aging. An example of the aging conditions is as follows: First, charge at a rate between 0.001C and 0.2C. The temperature may be, for example, above room temperature and below 40°C. At this time, decomposition of the electrolyte occurs, When gas is generated, if the gas accumulates in the cell, the electrolyte will come into contact with the electrode surface. In other words, the effective reaction area of ​​the electrode is reduced, and the effective This corresponds to an increase in the flow density.

[0167] If the current density becomes too high, a voltage drop occurs depending on the resistance of the electrode, and lithium is transferred to the active material. At the same time as lithium insertion occurs, lithium deposition occurs on the surface of the active material. For example, after lithium is deposited, a film may grow on the surface. If this happens, the lithium deposited on the surface will not dissolve, and the lithium that does not contribute to the capacity will In addition, if the deposited lithium physically collapses and loses its electrical connection with the electrode, However, lithium that does not contribute to the capacity is generated. It is preferable to degas before the lithium potential is reached.

[0168] After degassing, the temperature is set higher than room temperature, preferably 30°C or higher and 60°C or lower. More preferably, the temperature is 35°C or higher and 60°C or lower, and the charging time is, for example, 1 hour or higher and 100 hours or lower. During the initial charging, the electrolyte decomposes on the surface and forms a film. Therefore, for example, by keeping the temperature higher than room temperature after degassing, It is also conceivable that the coating may become dense.

[0169] Here, when bending the thin storage battery 200, it is recommended to bend it after the gas is released. It is preferable to bend the sheet after degassing, for example, in areas where stress is applied by bending. This can prevent lithium deposition and the like in the battery.

[0170] [Coin-type battery] Next, as an example of a power storage device, an example of a coin-type storage battery will be described with reference to FIG. 6(A) is an external view of a coin-type (single-layer flat) storage battery, and FIG. 26(B) is a cross-sectional view of the battery. Figure.

[0171] The coin-type storage battery 300 has a positive electrode can 301 that also serves as a positive electrode terminal and a negative electrode can 302 that also serves as a negative electrode terminal. 302 is insulated and sealed by a gasket 303 made of polypropylene or the like. The negative electrode 307 is composed of a negative electrode current collector 308 and a negative electrode active material layer 309 provided in contact with the negative electrode current collector. The negative electrode active material layer 309 contains the negative electrode active material described in Embodiment 1. In addition, the negative electrode described in Embodiment 2 is preferably used for the negative electrode 307.

[0172] The positive electrode 304 is composed of a positive electrode current collector 305 and a positive electrode active material layer 30 The positive electrode active material layer 306 may be formed by the positive electrode active material layer 202. For the separator 310, please refer to the description of the separator 207. For details, please refer to the description of the electrolyte 208.

[0173] The positive electrode 304 and the negative electrode 307 used in the coin-type storage battery 300 are each an active material. The barrier layer need only be formed on one side.

[0174] The positive electrode can 301 and the negative electrode can 302 are made of nickel or aluminum, which is corrosion-resistant to the electrolyte. Metals such as aluminum and titanium, or alloys of these and other metals (e.g., stainless steel) In addition, nickel or aluminum can be used to prevent corrosion by the electrolyte. The positive electrode can 301 is preferably coated with a positive electrode 304, and the negative electrode can 302 is preferably coated with a negative electrode. and the electrodes 307, respectively.

[0175] The negative electrode 307, the positive electrode 304, and the separator 310 are impregnated with an electrolyte, and the negative electrode 307, the positive electrode 304, and the separator 310 are then impregnated with an electrolyte. ) the positive electrode can 301 is placed downward, and the positive electrode 304, separator 310, negative electrode 307, The positive electrode can 301 and the negative electrode can 302 are stacked in this order, and the positive electrode can 301 and the negative electrode can 302 are secured together with a gasket 303 interposed therebetween. Then, the coin-type storage battery 300 is manufactured by crimping the components.

[0176] This embodiment mode can be freely combined with other embodiment modes. [Explanation of symbols]

[0177] 100 Electronic equipment 102 Display section 103 Electricity storage device 104 Circuit Board 105 Arrow 106 Energy storage device 111 board 112 board 113 board 121 Sealing part 122 Sealing part 123 Sealing part 126 Case 131 Fasteners 132 fasteners 136 Roundness 137 distance 141 Surface 142 Surface 200 storage batteries 201 Positive electrode current collector 202 Cathode active material layer 203 Positive electrode 204 Negative electrode current collector 205 Negative electrode active material layer 206 Negative electrode 207 Separator 208 Electrolyte 209 Exterior body 300 storage battery 301 Positive electrode can 302 Anode can 303 Gasket 304 Positive electrode 305 Positive electrode current collector 306 Positive electrode active material layer 307 Negative electrode 308 Negative electrode current collector 309 Negative electrode active material layer 310 Separator 400 Electronic equipment 401 Charger 510 Positive lead electrode 511 Negative lead electrode 512 Welding Area 513 Curved section 514 Sealing part 1700 curved surface 1701 Plane 1702 Curve 1703 Radius of curvature 1704 Center of curvature 1800 Center of curvature 1801 Film 1802 radius of curvature 1803 Film 1804 radius of curvature

Claims

1. a first plate, a second plate, a sealing portion, a flexible display portion, and a flexible power storage device; the first plate is translucent; the power storage device and the display unit are arranged in a position where they partially overlap each other, the first plate and the second plate are arranged to face each other, the sealing portion is disposed between the first plate and the second plate; the first plate has a first curved surface; the second plate has a second curved surface; the display unit has an area in contact with the first curved surface, the power storage device has a region in contact with the second curved surface, the sealing portion has higher elasticity than the first plate and the second plate; In a cross-sectional view, a surface of the sealing portion protrudes from surfaces of the first plate and the second plate.

2. a first plate, a second plate, a sealing portion, a flexible display portion, and a flexible power storage device; the first plate is translucent; the power storage device and the display unit are arranged in a position where they partially overlap each other, the first plate and the second plate are arranged to face each other, the sealing portion is disposed between the first plate and the second plate; the first plate has a first curved surface; the second plate has a second curved surface; the display unit has an area in contact with the first curved surface, the power storage device has a region in contact with the second curved surface, a coefficient of friction of the surface of the sealing portion is greater than a coefficient of friction of the surface of the first plate; a coefficient of friction of the surface of the sealing portion is greater than a coefficient of friction of the surface of the second plate; the sealing portion has higher elasticity than the first plate and the second plate; In a cross-sectional view, a surface of the sealing portion protrudes from surfaces of the first plate and the second plate.

3. In claim 1 or claim 2, An electronic device in which the radii of curvature of the first curved surface and the second curved surface change in response to an external force.

4. In any one of claims 1 to 3, An electronic device, wherein a change in the radius of curvature of the first curved surface and a change in the radius of curvature of the second curved surface in response to an external force are different.

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