Display device

Abstract

A display device (1) includes a frame (2) and an OLED module (3). The frame (2) includes a connecting portion (25) connecting a bending region (24) and an end region at a connecting surface (S2). In a case where a display surface (S3) of the OLED module (3) is folded inward, the connecting portion (25) stretches the end region of the frame (2) in a second direction opposite to a first direction in which the display surface (S3) is folded inward.

Description

Technical Field

[0001] This invention relates to display devices. Background Technology

[0002] In recent years, unlike flat panel displays, flexible display devices capable of changing various shapes have been developed. Flexible display devices are easy for users to carry, thus improving user convenience. Examples of flexible display devices include bendable displays, foldable displays, and rollable displays.

[0003] For example, Patent Document 1 describes a foldable display device that stores the elastic modulus of an adhesive used to bond multiple layers constituting an OLED module together and define the bonding properties.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2017-126061 Summary of the Invention

[0007] The technical problem to be solved by the present invention

[0008] Here, typically, the layers of the OLED module in a flexible display device, as described above, are bonded together with adhesives. In this case, if the display device equipped with the OLED module is bent, slippage occurs between the layers of the OLED module due to the layer thickness, as well as interlayer variations (deviations) caused by stretching and contraction. As a result, internal stresses such as tensile and compressive stresses are generated in each layer. In particular, peel stress is generated in the layers at the ends of the OLED module.

[0009] When the OLED module is repeatedly bent, the adhesives bonding the layers of the OLED module undergo plastic deformation, weakening the adhesive force and causing the OLED module to gradually slide. During this period, compressive or tensile stress is continuously applied to the layers of the OLED module, causing changes in the dimensions of each layer. If there are dimensional differences between the bonded layers, peel stress will occur.

[0010] If the adhesive used to bond the layers of an OLED module fails to mitigate the peel stress caused by differences in expansion and contraction between the layers, cracks and peeling may occur at the adhesive interfaces. Furthermore, even when the layers are firmly bonded together with adhesive, the layers of the OLED module may peel off from each other or cracks may appear in the panel. As a result, this can sometimes compromise the appearance quality of the display device.

[0011] Patent Document 1 also mentions the tilting of the cross-section of the end regions of each layer caused by the interlayer shift that occurs when the folding display device is opened from its closed state. However, if the display device described in Patent Document 1 does not correct the shift of each layer caused by the sliding and stretching of each layer, the internal stress generated in each layer will not be reduced when the display device is bent.

[0012] Therefore, one objective of the present invention is to provide a display device that can reduce the internal stress generated in each layer of the OLED module when the display device is bent.

[0013] Technical solutions for solving technical problems

[0014] A display device according to one aspect of the present invention includes: a frame; and an OLED module supported by the frame, having multiple layers including an OLED layer laminated via an adhesive. The frame has one or more connecting portions, which respectively connect one or more bending regions of the frame and at least one end region of the frame to a connecting surface on the opposite side of a support surface supporting the OLED module on a surface of the frame. The bending regions of the frame fold inward over the display surface of the OLED module. When the display surface is folded inward, the connecting portions stretch the end region of the frame in a second direction opposite to the first direction of folding the display surface inward, which is to fold the display surface outward.

[0015] Beneficial effects

[0016] A display device capable of reducing internal stress generated in each layer of the OLED module when the display device is bent. Attached Figure Description

[0017] Figure 1 is a side view of an example of a display device according to a first embodiment in the open state.

[0018] Figure 2 This is a side view illustrating an example of the closing action of the frame in the display device according to the first embodiment.

[0019] Figure 3 This is a side view of an example of a display device in the first embodiment, shown in its off state.

[0020] Figure 4 This is a side view illustrating an example of the opening action of the frame in the display device according to the first embodiment.

[0021] Figure 5 This is a side view of an example of a prior art display device in its open state.

[0022] Figure 6 This is a side view of an example of a prior art display device in its off state.

[0023] Figure 7 This is a side view of an example of a display device showing the end area of ​​an unfixed OLED module.

[0024] Figure 8 This is a side view of an example of a display device according to the second embodiment in the open state.

[0025] Figure 9 This is a side view of an example of a display device according to the second embodiment in the off state.

[0026] Figure 10 This is a side view showing an example of a display device according to the third embodiment in the open state.

[0027] Figure 11 This is a front view showing an example of a display device according to the third embodiment in the open state.

[0028] Figure 12 This is a top view showing an example of a display device according to the third embodiment in the open state.

[0029] Figure 13 This is a side view of an example of a display device according to a third embodiment in the off state. Detailed Implementation

[0030] <First Implementation Method>

[0031] Hereinafter, the display device 1 of the first embodiment of the present invention will be described with reference to the accompanying drawings.

[0032] Figure 1 This is a side view (sectional side view) of an example of the display device 1 of the first embodiment in the open state.

[0033] [Display Device 1]

[0034] Display device 1 is a flexible display device whose shape can be varied.

[0035] As a display device 1, for example, as an electro-optic element whose brightness and transmittance are controlled by current, an organic EL (Electro Luminescence) display equipped with an OLED (Organic Light Emitting Diode) can be cited. Display device 1 can be used, for example, as a portable terminal such as a smartphone or tablet.

[0036] The size (dimensions) of the display device 1 is not particularly limited. For example, the display device of the present invention can be applied if the length is 140mm or more and 160mm or less, the width is 60mm or more and 80mm or less, and the thickness is 5mm or more and 20mm or less.

[0037] like Figure 1 As shown, the display device 1 includes a frame 2 and an OLED module 3 supported on the frame 2. Furthermore, when the frame 2 and the OLED module 3 are in the open state, they are in a flat state.

[0038] [Frame 2]

[0039] like Figure 1 As shown, the frame 2 includes a display section 21, a support section 22, a first connecting section 23, a connecting section 25, a bending section 26, and a second connecting section 27. Furthermore, the frame 2 is provided with a bending area 24, a cutout section 28, and a non-fixed area 29.

[0040] like Figure 1 As shown, in the open state, the display part 21, support part 22, first connecting part 23, connecting part 25, bending part 26 and second connecting part 27 in the frame 2 of the display device 1 are in a flat state.

[0041] (Display Unit 21)

[0042] Display unit 21 is a screen that displays images and text, etc.

[0043] exist Figure 1 In the example shown, the display unit 21 includes a display unit 211 and a display unit 212. However, in this embodiment, the display unit 21 can be composed of one or more display units. It can be composed of one display unit or three or more display units.

[0044] However, as Figure 1 As shown, the display unit 21 is composed of two display units 211 and 212. Therefore, the frame 2 can be bent more appropriately without bending in the area within the two display units 211 and 212.

[0045] (Support part 22)

[0046] The support part 22 supports the display part 21.

[0047] like Figure 1 As shown, when the frame 2 has a support portion 22, the support portion 22 can also be provided in the area where the frame 2 is bent (for example, the central area of ​​the frame 2). By providing the support portion 22 in the bending area of ​​the frame 2, such as the central area of ​​the frame 2, the frame 2 can be bent more appropriately.

[0048] In addition, such as Figure 1 As shown, when the support portion 22 is provided in the bending area of ​​the frame 2, the support portion 22 may also have a first connecting portion 23 in the bending area 24 of the bending frame 2. By having the first connecting portion 23 in the support portion 22, the frame 2 can be bent more appropriately.

[0049] The thickness of the support portion 22 is not particularly limited, for example, it is 1 mm or more and 2 mm or less. By making the thickness of the support portion 22 1 mm or more and 2 mm or less, the display device 1 can be folded more appropriately.

[0050] (First connecting part 23)

[0051] The first connecting part 23 is rotatably connected to one end region of the display part 21 and one end region of the support part 22 with the first connecting part 23 as the center.

[0052] exist Figure 1 In the example shown, the first connecting portion 231 connects one end region of the display portion 211 and one end region of the support portion 22, and the first connecting portion 232 connects one end region of the display portion 212 and the other end region of the support portion 22. In other words, in Figure 1 In the example shown, display units 211 and 212 are connected to support unit 22 via first connecting units 231 and 232.

[0053] However, in this embodiment, when the display unit 21 is composed of a single display unit, the end region of one side of the display unit 21 and the end region of one side of the support unit 22 can be rotatably connected around the first connecting part 23 by means of a first connecting part 23. In this way, if the frame 2 includes at least one first connecting part 23, the frame 2 can be bent more easily and appropriately.

[0054] As the first connecting part 23, a hinge can be cited as an example. Since the first connecting part 23 is a hinge, the frame 2 can be bent more easily and properly.

[0055] (Bend area 24)

[0056] The bending area 24 is the area where the frame 2 is bent. It is the area where the supporting surface S1 of the OLED module 3 and the display surface S3 of the OLED module 3 are folded inward to form a concave shape.

[0057] The following uses Figures 1-3 The bending area 24 is described in detail.

[0058] Figure 2 This is a side view illustrating an example of the closing action of the frame 2 in the display device 1 according to the first embodiment. In other words, Figure 2This is an example diagram showing the state of box 2 when it is starting to close. Figure 3 This is a side view of an example of the display device 1 of the first embodiment in its off state. In other words, Figure 3 This is a diagram showing an example of the display device 1 in the closed state of the frame 2.

[0059] like Figure 3 As shown, in the closed state, the OLED module 3 is folded to the concave side in the support portion 22 and the central region of the OLED module 3, which is also the non-fixed region 291 that serves as the bending region, and the end region of the frame 2, i.e. the bending portion 26, opens to the convex side.

[0060] Figures 1-3 In the example shown, the bending region 24 is the end region of the support portion 22. Furthermore, when the display portion 211 is rotated with the first connecting portion 231 as the center and the display portion 212 is rotated with the first connecting portion 232 as the center, the bending regions 241 and 242 become regions that fold the display surface S3 of the frame 2 inward.

[0061] In this embodiment, there can be one or more bending regions 24, and the number of bending regions 24 is not particularly limited, but if Figures 1-3 As shown, two are preferred. By having two bending regions 24, the display device 1 can be bent more appropriately, as... Figure 3 As shown, the easily foldable display device 1 can be appropriately used as a foldable display device.

[0062] In addition, Figure 3 In the example shown, the inwardly folded portion of the display surface S3 of the OLED module 3, i.e., the non-fixed region 291, becomes the central region of the support portion 22, which is different from the position of the bent region 24 of the bent portion of the frame 2. However, in this embodiment, the frame 2 may also lack the support portion 22 and be composed only of a bendable display portion, with the non-fixed region 291 and the bent region 24 being shared areas. Even in such a case, the display device 1 of this embodiment can reduce the internal stress generated in each layer of the OLED module 3.

[0063] (Connection 25)

[0064] The connecting portion 25 connects the bent region 24 and the bent portion 26, which is at least one end region of the frame 2, on the connecting surface S2 opposite to the supporting surface S1. Figure 1 In the example shown, the connecting portion 251 connects one end region of the support portion 22, namely the bending region 241 and the bending portion 261, and the connecting portion 252 connects the other end region of the support portion 22, namely the bending region 242 and the bending portion 262.

[0065] like Figure 1 As shown, the connecting portion 25 can also connect at least one end region of the support portion 22 and at least one end region of the frame 2, namely the bent portion 26. Thus, on the connecting surface S2 opposite to the support surface S1, the first connecting portion 23, the bent portion 26, and the second connecting portion 27 are linked together and the bending action is synchronized, just as in the case where the bending region 24 and the bent portion 26 are connected respectively.

[0066] Furthermore, when the display surface S3 is folded inward, the connecting portion 25 stretches the bent portion 26 in a second direction opposite to the first direction of the inward folding of the display surface S3, which is the outward folding of the display surface S3.

[0067] exist Figure 2 In the example shown, when the support portion 22 is rotated relative to the display portion 212 in the first direction D1 (i.e., the concave side) with the second connecting portion 272 as the center, and the display surface S3 is folded inward, the connecting portion 252 and the support portion 22 move in conjunction with each other. Figure 2 Stretch to the left as indicated by the arrow.

[0068] Therefore, when the support portion 22 is rotated relative to the display portion 212 in the first direction D1 on the concave side with the second connecting portion 272 as the center, and the display surface S3 is folded inward, the connecting portion 252 stretches the bent portion 262 in the second direction D2, which is opposite to the first direction D1 and thus the display surface S3 is folded outward. Similarly, when the display surface S3 is folded inward, the connecting portion 251 stretches the bent portion 261 in the direction opposite to the direction of closing the display device 1, i.e., the concave side, i.e., the convex side.

[0069] Thus, by stretching the bent portion 26 through the connecting portion 25, the end region 36 of the OLED module supported by the bent portion 26 is also stretched. Therefore, as... Figure 3 As shown, when the display surface S3 is folded inward, the display device 1 is bent, or folded, the end region 36 of the OLED module is also stretched.

[0070] Therefore, by generating interlayer slip in the end region 36 in the opposite direction to the interlayer slip (interlayer sliding) of the OLED module 3 in the bending region, i.e., the non-fixed region 291, of the OLED module 3, the dimensional variation differences between the layers of the OLED module 3 can be reduced. As a result, the internal stress of each layer of the OLED module 3 can be offset and reduced, making it difficult for the layers to peel off.

[0071] In addition, Figure 3In the example shown, the bending portion 26 is stretched by the connecting portion 25, and the bending portion 26 bends towards the convex side, which is the opposite direction to the direction in which the display device 1 is turned off, i.e., the concave side. Simultaneously, the OLED module 3, supported by the bending portion 26, also warps towards the convex side, which is the opposite direction to the direction in which the display device 1 is turned off. This further reduces the internal stress generated in each layer of the OLED module 3.

[0072] The reasons for reducing the internal stress generated in each layer of the OLED module 3 by stretching the end region 36 of the OLED module will be explained in more detail later compared with the prior art display device 1' and display device 1" .

[0073] like Figure 1 As shown in the example, the connecting portion 25 can also be positioned below the first connecting portion 23 and the second connecting portion 27. Therefore, when the first connecting portion 23 bends towards the concave side, the second connecting portion 27 can easily bend towards the concave side. This further reduces the internal stress generated in each layer of the OLED module 3.

[0074] The following uses Figure 4 The operation of the connecting part 25 during the operation of opening the display device 1 will be explained. Figure 4 This is a side view illustrating an example of the opening action of the frame 2 in the display device 1 according to the first embodiment. In other words, Figure 4 This is an example diagram showing the state of box 2 when it is initially opened.

[0075] exist Figure 4 In the example shown, when the support portion 22 is rotated about the first connecting portion 232 in a third direction D3 relative to the direction in which the frame 2 of the display device 1 is opened (returned to its initial state) relative to the display portion 212, the connecting portion 252 moves in conjunction with the support portion 22 towards... Figure 4 The arrow indicates that the bending portion 262 is pushed out in the right direction. Consequently, when the support portion 22 is rotated about the first connecting portion 232 along a third direction D3, the connecting portion 252 pushes the bending portion 262 out in a fourth direction D4, opposite to the third direction D3, and the bending portion 262 returns to its initial state. Similarly, when the display portion 211 is rotated relative to the support portion 22 in the direction of opening the display device 1, the connecting portion 251 pushes the bending portion 261 out in the direction opposite to the direction of opening the display device 1, and the bending portion 261 returns to its initial state.

[0076] Figures 1-4In the example shown, the end regions 2511 and 2512 of the connecting portion 251, and the end regions 2521 and 2522 of the connecting portion 252, are tapered shapes that slope inwards. Thus, at least one end region of the connecting portion 25 can also be a tapered shape that slopes inwards. By making at least one end region of the connecting portion 25 a tapered shape that slopes inwards, even if the bent portion 26 bends towards the convex side, it is difficult for it to contact or interfere with the connecting surface S2 of the frame 2. Therefore, the bent portion 26 can be bent more appropriately.

[0077] The connecting part 25 can be, for example, a thin plate-shaped component or a rod-shaped component. For example, a thin metal plate such as an SUS plate can be used. For example, a rod-shaped component such as a shaft can be used. The connecting part 25 being an SUS plate or a shaft allows for a more appropriate connection between the bending region 24 and the bent portion 26, and the bent portion 26 can be stretched in the direction opposite to the inward bending direction.

[0078] The thickness of the connecting portion 25 is not particularly limited, for example, it is 140 μm or more and 160 μm or less. By making the thickness of the connecting portion 25 140 μm or more and 160 μm or less, the end region of the frame 2, i.e. the bending portion 26, can be bent more appropriately.

[0079] (Bend 26)

[0080] The curved portion 26 is the end region of the frame 2. For example... Figure 1 As shown, when the frame 2 is in the open state, the curved part 26 is in a flat state.

[0081] When the display surface S3 is folded inward, the bent portion 26 is stretched along a second direction on the connecting portion 25. This second direction is the convex side of the display surface S3 that is folded outward, opposite to the concave side of the inward folding of the display surface S3 (i.e., the first direction). In this way, the bent portion 26 is stretched by the connecting portion 25, thereby stretching the end region 36 of the OLED module supported by the bent portion 26.

[0082] Therefore, by generating interlayer slip in the bending region 291 of the OLED module 3 in the end region 36, which is in the opposite direction to the interlayer slip (interlayer sliding) of the OLED module 3, the dimensional variation difference of each layer of the OLED module 3 can be reduced.

[0083] As a result, the internal stress of each layer of the OLED module 3 can be offset or reduced, making each layer difficult to peel off.

[0084] Furthermore, when the bending portion 26 is stretched towards the convex side (second direction) of the display surface S3, it can also be bent in the second direction, which is the convex side. As a result, the OLED module 3 supported by the bending portion 26 also bends towards the convex side (opposite to the direction of closing the display device 1, i.e., the concave side), and warps towards the convex side (opposite to the direction of closing the display device 1, i.e., the concave side). This further reduces the internal stress of each layer of the OLED module 3.

[0085] Furthermore, when the display surface S3 is folded inward, the bent portion 26 can also rotate in the second direction around the second connecting portion 272. This makes it easier and more appropriate to bend the bent portion 26. As a result, it is easier and more appropriate to warp the bent portion 26 and the OLED module 3 supported by the bent portion 26, and it is more appropriate to reduce the internal stress generated in each layer of the OLED module 3.

[0086] exist Figure 2 In the example shown, when the support portion 22 is rotated relative to the display portion 212 along the first direction D1 (concave side) with the second connecting portion 272 as the center, and the display surface S3 is folded inward, the connecting portion 252 is stretched by the support portion 22. Furthermore, by stretching the connecting portion 252 toward the support portion 22, the bent portion 262 is stretched in the second direction D2 (convex side), opposite to the first direction D1. Similarly, when the display surface S3 is folded inward, by stretching the connecting portion 251 toward the support portion 22, the bent portion 261 is stretched in the direction opposite to the direction of closing the display device 1 (convex side).

[0087] In addition, Figure 3 In the example shown, the bending portion 26 is stretched by the connecting portion 25, and the bending portion 26 bends in the opposite direction to the direction of closing the display device 1, i.e., the concave side, i.e., the convex side.

[0088] exist Figure 4 When the support portion 22 is rotated relative to the display portion 212 toward the convex side of the open display device 1, i.e., the third direction D3, with the second connecting portion 232 as the center, the bent portion 262 is stretched toward the concave side, i.e., the fourth direction D4, opposite to the third direction D3, via the connecting portion 252. Similarly, when the display portion 211 is rotated relative to the support portion 22 toward the direction of opening the display device 1, the bent portion 261 is stretched toward the concave side, opposite to the direction of opening the display device 1, via the connecting portion 251.

[0089] Figures 1-4 In the example shown, the curved portion 26 is composed of two curved portions, curved portion 261 and curved portion 262. However, in this embodiment, the curved portion 26 may also be composed of only one curved portion. However, as... Figures 1-4As shown in the example, the bending portion 26 is preferably composed of two bending portions, such as bending portions 261 and 262. Because the bending portion 26 is composed of two bending portions, the internal stress generated in each layer of the OLED module 3 can be further reduced when the display device 1 is bent.

[0090] (Second connecting part 27)

[0091] The second connecting part 27 connects the end region of the display part 21 that is not connected to the support part 22 and the end region of one of the bent parts 26 in a manner that allows rotation around the second connecting part 27. Figure 1 As shown, with the frame 2 open, the second connecting part 27 is in a flat state.

[0092] exist Figure 1 In the example shown, the second connecting portion 271 and the second connecting portion 272 are located at one end region and the other end region of the frame 2, respectively. The second connecting portion 271 and the second connecting portion 272 are fixed to the frame 2 by bending, such that a bend 261 is included in one end region of the frame 2 and a bend 262 is included in the other end region. Furthermore, the second connecting portions 271 and 272 are linked with the first connecting portions 231 and 232, bending in opposite directions relative to the first connecting portions 231 and 232.

[0093] exist Figure 1 In the example shown, the second connecting portion 271 is rotatably connected to the end region of the display portion 211 that is not connected to the support portion 22 and to the end region of the bent portion 261, with the second connecting portion 271 as the center. Furthermore, the second connecting portion 272 is rotatably connected to the end region of the display portion 212 that is not connected to the support portion 22 and to the end region of the bent portion 262, with the second connecting portion 272 as the center.

[0094] In other words, the display portion 211 and the curved portion 261 are connected via the second connecting portion 271. Furthermore, the display portion 212 and the curved portion 262 are connected via the second connecting portion 272.

[0095] Thus, by providing a second connecting portion 27 outside the bending region 24 of the frame 2, and by connecting the other end region of the display section 21 and the end region of one of the bent portions 26 in a manner that allows rotation around the second connecting portion 27, the bent portion 26 can be bent more easily and appropriately. As a result, the OLED module 3 supported by the bent portion 26 can also be bent more easily and appropriately, and the internal stress generated in each layer of the OLED module 3 can be reduced more appropriately.

[0096] The second connecting portion 27 may also be provided on the support surface S1 of the end region of the display portion 21 that is not connected to the support portion 22 and the end region of the bent portion 26. In this case, a cutout portion 28 may also be provided in the connecting surface S2 on the side opposite to the second connecting portion 27.

[0097] exist Figure 1 In the example shown, the second connecting portion 271 is provided on the support surface S1 of the end region of the display portion 211, which is the end region of the other end region not connected to the support portion 22 and the end region of the bent portion 261. The second connecting portion 272 is provided on the support surface S1 of the end region of the display portion 212, which is the end region of the other end region not connected to the support portion 22 and the end region of the bent portion 262. Furthermore, a cutout portion 281 is provided in the region of the connecting surface S2 opposite to the second connecting portion 271, and a cutout portion 282 is provided in the region of the connecting surface S2 opposite to the second connecting portion 272.

[0098] Thus, the support surface S1, where the second connecting portion 27 is located on the other end region of the display portion 21 and on one end region of the bent portion 26, allows the bent portion 26 to be bent more easily and appropriately by providing a cutout 28 in the region opposite to the second connecting portion 27. As a result, the OLED module 3 supported by the bent portion 26 can also be bent more easily and appropriately, further reducing the internal stress generated in each layer of the OLED module 3.

[0099] As a second connecting part 27, a hinge can be cited as an example. Because the second connecting part 27 is a hinge, the bending part 26 can be bent more easily and appropriately relative to the display part 21. As a result, the OLED module 3 supported by the bending part 26 can also be bent more easily and appropriately, and the internal stress generated in each layer of the OLED module 3 can be further appropriately reduced.

[0100] OLED module 3

[0101] The OLED module 3 is supported by the frame 2, and multiple layers including the OLED layer (OLED panel) 32 are stacked by an adhesive.

[0102] Multiple layers can also be stacked using transparent adhesives such as OCA (Optical Clear Adhesive). Stacking multiple layers using transparent adhesives such as OCA can further reduce the internal stress generated in each layer of the OLED module 3.

[0103] The thickness of the adhesive is not particularly limited; for example, it can be 15μm or more and 75μm or less. By making the thickness of the adhesive 15μm or more and 75μm or less, it is neither too thick nor too thin, so the OLED module 3 can be fixed to the frame 2 more appropriately, and the OLED module 3 can be bent more appropriately.

[0104] The following uses Figure 1 The OLED module 3 will be explained in detail.

[0105] exist Figure 1 In the example shown, the OLED module 3 is supported by the frame 2 in the display sections 211, 212, bending sections 261 and 262, and is fixed to the frame 2.

[0106] Furthermore, the OLED module 3 comprises, from bottom to top, multiple layers including a fixing component 31, an OLED layer 32, a touch panel 33, a polarizing film 34, and a window film 35, which are bonded together by an OCA (Optical Coel A, not shown). The layers of the OLED module 3 typically use known layers employed in OLED modules.

[0107] (Fixed component 31)

[0108] The fixing component 31 is a component that fixes the OLED module 3 to the frame 2 by means of bonding or adhesive, such as double-sided tape.

[0109] like Figure 1 As shown, the fixing component 31, which is the bottommost layer of the OLED module 3, may not be provided on a part of the support surface S1 of the frame 2. In other words, the bottommost layer of the OLED module 3 may not be provided on a part of the support surface S1 of the frame 2, and a part of the support surface S1 becomes a non-fixed area 29.

[0110] For example, such as Figure 1 as well as Figure 3 As shown, the bottom layer of the OLED module 3 can also be provided in the non-fixed regions 291, 292, and 293 of the support surface S1 of the frame 2 where the OLED module 3 is bent. This allows the OLED module 3 to be bent without applying excessive force, further reducing the internal stress generated in each layer of the OLED module 3.

[0111] The thickness of the fixing member 31 is not particularly limited, but is preferably 40 μm or more and 60 μm or less. By making the thickness of the fixing member 31 40 μm or more and 60 μm or less, it is neither too thick nor too thin, so the OLED module 3 can be fixed to the frame 2 more appropriately, and the display device 1 equipped with the OLED module 3 can be bent more appropriately.

[0112] (OLED layer 32)

[0113] The OLED layer 32 is an organic light-emitting diode that includes a light-emitting layer, holes, a cathode, an insulating layer, and a conductive layer.

[0114] The thickness of the OLED layer 32 is not particularly limited, but is preferably 20 μm or more and 40 μm or less. By making the thickness of the OLED layer 32 20 μm or more and 40 μm or less, it is neither too thick nor too thin, so the display device 1 equipped with the OLED module 3 can be bent more appropriately.

[0115] (Touch Panel 33)

[0116] Touch panel 33 is a panel with touch sensor functionality.

[0117] The thickness of the touch panel 33 is not particularly limited, but is preferably 5 μm or more and 25 μm or less. By making the thickness of the touch panel 33 5 μm or more and 25 μm or less, it is neither too thick nor too thin, so the display device 1 equipped with the OLED module 3 can be bent more appropriately.

[0118] (Polarizing film 34)

[0119] The polarizing film (polarizing plate) 34 is an optical film used as a polarizing light supply element or a polarizing light detection element in the display device 1.

[0120] The thickness of the polarizing film 34 is not particularly limited, but is preferably 20 μm or more and 40 μm or less. Since the thickness of the polarizing film 34 is 20 μm or more and 40 μm or less, it is neither too thick nor too thin, thus allowing for more appropriate bending of the display device 1 equipped with the OLED module 3.

[0121] (Window film 35)

[0122] Window film 35 is the outermost layer of OLED module 3.

[0123] The thickness of the window film 35 is not particularly limited, but is preferably 80 μm or more and 100 μm or less. By making the thickness of the window film 35 80 μm or more and 100 μm or less, it is neither too thick nor too thin, so the display device 1 equipped with the OLED module 3 can be bent more appropriately.

[0124] [Effect of display device 1]

[0125] The following uses Figures 1-7 While comparing it with the prior art display device 1', the effects of the display device 1 of the first embodiment are explained. Figure 5 This is a side view of a prior art display device 1' in its open state. Figure 6This is a side view of a prior art display device 1' in its off state. Figure 7 This is a side view of an example of a display device 1” showing the end region of an unfixed OLED module 3”.

[0126] (Prior art display device 1')

[0127] like Figure 5 As shown, the display device 1' includes a frame 2' and an OLED module 3' supported on the frame 2'.

[0128] The frame 2' includes a display section 21', a support section 22', and a first connecting section 23'. The frame 2' has a bending region 24' and a non-fixed region 29' in which the support surface S1' supporting the OLED module 3' and the connecting surface S2' opposite to the support surface S1' are folded inward to form a concave shape.

[0129] The bending region 24' is composed of bending regions 241' and 242'. When the display section 211' is rotated around the first connecting section 231' and the display section 212' is rotated around the first connecting section 232', it becomes the region where the display surface S3' of the frame 2' is folded inward. On the other hand, the frame 2' differs from the frame 2 in the first embodiment in that it does not have the connecting section 25, the bending section 26, the second connecting section 27, and the cutout section 28. In the non-fixed region 29, there is no non-fixed region corresponding to the non-fixed regions 291 and 292. Apart from these points, the frame 2' has the same structure as the frame 2 in the first embodiment.

[0130] The OLED module 3' comprises, from bottom to top, a fixing component 31', an OLED layer 32', a touch panel 33', a polarizing film 34', and a window film 35', which are bonded together by an OCA (not shown). The OLED module 3' also has fixing components 31' in the areas corresponding to the non-fixed areas 291 and 292. Apart from this, the OLED module 3' has the same configuration as the OLED module 3 in the first embodiment.

[0131] like Figure 6 As shown, when the display device 1' is bent, the difference in interlayer variation caused by the sliding and stretching of each layer due to the layer thickness of the OLED module 3' results in internal stresses such as tensile stress and compressive stress in each layer. In particular, peel stress occurs in the layers of the end region of the OLED module 3'.

[0132] For example, such as Figure 6As shown, when the OLED module 3' and the display device 1' are folded inward together, a slip occurs between the layers of the OLED module 3' as the OLED module 3' is bent. The amount of slip between the layers does not depend on the radius of each layer, but on the distance between the layers.

[0133] exist Figure 5 and 6 In the example shown, the OLED module 3' is bent with vertical lines marking the equal positions of each layer before bending in the horizontal direction.

[0134] like Figure 6 As shown, tensile stress N1' acts on OLED layer 32', stretching OLED layer 32', while compressive stress N2' acts on window film 35', compressing window film 35'. In this case, the theoretical slip L (μm) between these layers is expressed by the following equation (1) using the interlayer distance D' (μm). For example, when the interlayer distance D' (μm) is 100 (μm), the slip S' (μm) is 157 (μm).

[0135] S'=π·D' / 2···(1)

[0136] In addition, from Figure 6 As can be seen from the vertical line, in the OLED module 3', the layers are bonded together by OCA, thus limiting the sliding amount of each layer. For example, the sliding amount of the end region of the OLED module 3' is actually smaller than the value of equation (1) due to the bonding of OCA.

[0137] When the OLED module 3' is repeatedly bent, the adhesives such as OCA that bond the layers of the OLED module 3' undergo plastic deformation, and the adhesive force weakens, so the OLED module 3' slides slowly. During this period, compressive or tensile stress is continuously applied to the layers of the OLED module 3', causing the dimensions of each layer to change. If there is a dimensional difference between the bonded layers, peel stress is generated.

[0138] Furthermore, if the adhesives such as OCA used to bond the layers of the OLED module 3' cannot mitigate the peel stress caused by the difference in expansion and contraction between the layers, cracks and peeling may occur at the adhesive interfaces. Additionally, even when the layers are firmly bonded together with adhesives, the layers of the OLED module 3' may peel off from each other, or cracks may appear in the panel. As a result, this can sometimes compromise the appearance quality of the display device 1'.

[0139] Here, with the end region 36' of the OLED module 3' in the display device 1' not fixed to the frame 2', it becomes Figure 7As shown in the diagram. Furthermore, for ease of explanation, components having the same functions as those described in the above examples are labeled with the same reference numerals, and their descriptions are omitted.

[0140] like Figure 7 As shown, the display device 1" includes a frame 2' and an OLED module 3 supported on the frame 2'.

[0141] The OLED module 3” consists of, from bottom to top, a fixing component 31”, an OLED layer 32”, a touch panel 33”, a polarizing film 34”, and a window film 35”.

[0142] The end region 36” of the OLED module 3” is not fixed to the frame 2'. Furthermore, the fixing member 31” is not located in the end region of the frame 2'. In other words, the layers of the OLED module 3” other than the fixing member 31” also exist in the non-fixed region 29”, specifically in the non-fixed region 29”, in the non-fixed region 29”, as well as the non-fixed region 292”. Apart from these points, the OLED module 3” has the same configuration as the OLED module 3” in the prior art.

[0143] like Figure 7 As shown, in the end region 36” corresponding to the non-fixed region 292”, the first end region 3611” protrudes relative to the display portion 211', and the second end region 3621” warps in the direction opposite to the concave side of the bending direction of the frame 2', i.e., the convex side. Similarly, in the end region 36” corresponding to the non-fixed region 293”, the first end region 3612” protrudes relative to the display portion 212', and the second end region 3622” warps in the direction opposite to the concave side of the bending direction of the frame 2', i.e., the convex side. That is, the first end region 361” protrudes relative to both the display portions 211' and 212', and the second end region 362” warps in the direction opposite to the convex side of the bending direction of the frame 2', i.e., the concave side.

[0144] Therefore, in the prior art display device 1', when the OLED module 3' is bent, the end area is fixed, thus applying excessive force to the OLED module 3'.

[0145] Furthermore, it is known that if the end region 36" of the OLED module 3" is not fixed and moves freely, the end region 36" will warp in a direction opposite to the bending direction, i.e., the convex side, in a way that releases the stress generated by bending the OLED module 3". That is, it is known that even if the OLED module 3" is bent, if the end region 36" of the OLED module warps in a direction opposite to the bending direction, i.e., the concave side, then it is not necessary to apply excessive force to the OLED module 3".

[0146] (Display device 1 of the first embodiment)

[0147] In contrast, such as Figure 1 As shown in the example, in the first embodiment, the display device 1, with vertical lines marking the equivalent positions of each layer of the OLED module 3 before bending in the horizontal direction, becomes, when the OLED module 3 is bent, Figure 3 The state shown.

[0148] When the device is bent towards the concave side in the direction of closing the display device 1, the end region 36 of the OLED module supported by the bent portion 26 is also stretched as the bent portion 26 is stretched by the connecting portion 25. Figure 3 In the example shown, as the bending portion 26 bends in the direction opposite to the concave side of the bending display device 1, i.e., the convex side, the end region 36 of the OLED module supported by the bending portion 26 also warps in the convex side.

[0149] Therefore, interlayer slip can be generated in the end region 36 in the opposite direction to the interlayer slip (interlayer slip) of the OLED module 3 in the bending region, i.e., the non-fixed region 291, which is the OLED module 3.

[0150] For example, compared with the tensile stress N1' acting on the OLED layer 32' in the prior art, the tensile stress N1 acting on the OLED layer 32 can be reduced. Similarly, compared with the compressive stress N2' acting on the window film 35' in the prior art, the compressive stress N2' acting on the window film 35 can be reduced.

[0151] As a result, by reducing the elongation of the OLED layer 32' and the shrinkage of the window film 35, the dimensional variation of each layer of the OLED module 3 can be reduced. Consequently, the internal stress of each layer of the OLED module 3 can be offset and reduced, making it less likely for the layers to peel off.

[0152] <Second Implementation Method>

[0153] In the display device 1 of the first embodiment, the OLED module 3 is bent into a U-shape, but the display device of the present invention can also be bent into a teardrop shape as in the display device 1X of the second embodiment.

[0154] The following uses Figure 8 and 9 The display device 1X according to the second embodiment will now be described. Furthermore, for ease of explanation, components having the same functions as those described in the above embodiments will be labeled with the same reference numerals, and their descriptions will be omitted.

[0155] Figure 8 This is a side view of an example of the display device 1X of the second embodiment in the open state. Figure 9This is a side view of an example of the display device 1X of the second embodiment in the off state.

[0156] [Display Device 1X]

[0157] like Figure 8 As shown, the display device 1X includes a frame 2X and an OLED module 3X supported on the frame 2X.

[0158] [Frame 2X]

[0159] like Figure 8 As shown, the frame 2X includes a display section 21X, a support section 22, a first connecting section 23, a connecting section 25, a bending section 26, and a second connecting section 27. Furthermore, a bending region 24 is provided in the frame 2X. Additionally, the frame 2X includes a bending region 24, a cutout section 28, and a non-fixed region 29X.

[0160] Thus, except that the frame 2X has a display section 21X instead of the display section 21 in the first embodiment, it has the same configuration as the frame 2 in the first embodiment.

[0161] (Display unit 21X)

[0162] The display unit 21X includes a first display unit (display unit) 211X, a first display unit (display unit) 212X, a second display unit (display unit) 213X, and a second display unit (display unit) 214X.

[0163] The heights of the first display units 211X and 212X are lower than the heights of the display units 211 and 212 in the first embodiment. Apart from this, the first display units 211X and 212X have the same configuration as the display units 211 and 212 in the first embodiment.

[0164] The second display units 213X and 214X are not particularly limited as long as they can ensure the visibility of the images displayed on the first display unit 211X and the first display unit 212X. For example, they may be made of a transparent frame (or a similar frame).

[0165] like Figure 8 As shown, the second display unit 213X is supported by the first display unit 211X and is located in a region extending from one end of the frame 2X, i.e., a portion of the curved portion 261 toward the bending region 241. The second display unit 214X is supported by the first display unit 212X and is located in a region extending from the other end of the frame 2X, i.e., a portion of the curved portion 262 toward the bending region 242.

[0166] Therefore, the height of a portion of the frame 2X from one end region, i.e., the curved portion 261, toward the bending region 241, and the height of a portion of the frame 2X from the other end region, i.e., the curved portion 262, toward the bending region 242, are higher than the height of other regions of the frame 2X.

[0167] like Figure 9 As shown, when the display surface S3 of the OLED module 3X of the display device 1X is folded inward, the shape of the OLED module 3X becomes a teardrop shape that expands in the central region, i.e., the non-fixed region 291X, where the OLED module 3X is bent.

[0168] Thus, when the OLED component 3X is shaped like a teardrop, sliding occurs between the layers due to the expansion of the OLED component 3X. However, the amount of sliding between the layers does not depend on the radius of each layer, but rather on the distance between the layers. Furthermore, the amount of sliding between the layers of the OLED module 3X is the same as in the first embodiment, with the amount of sliding between the layers in the end region 36X being less than the amount of sliding between the layers in the non-fixed region 291X.

[0169] Here, when the display device 1X is bent towards the concave side (the direction of closing), the end region 36X of the OLED module supported by the bending portion 26 is also stretched as the bending portion 26 is stretched by the connecting portion 25. Furthermore, as the bending portion 26 bends towards the convex side (the direction opposite to the concave side of the display device 1X), the end region 36X of the OLED module supported by the bending portion 26 also warps towards the convex side.

[0170] Thus, the end region 36X of the OLED module in the second embodiment performs the same operation as the end region 36 of the OLED module in the first embodiment. Therefore, in the end region 36X of the OLED module, interlayer sliding in the opposite direction to the interlayer sliding of the OLED module 3X in the non-fixed region 291X can also occur, just as in the end region 36 of the OLED module in the first embodiment.

[0171] Therefore, in the second embodiment where the OLED module 3X is bent into a teardrop shape, the same technique as in the first embodiment where the OLED module 3X is bent into a U-shape can be applied to reduce the dimensional variation differences between the layers of the OLED module 3X. As a result, the internal stress of each layer of the OLED module 3X can be offset and reduced, making it difficult for the layers to peel off.

[0172] Furthermore, the gap GX (distance between the fixing members 31X) of the frame 2X of the display device 1X in the closed state is shorter than the gap G (distance between the fixing members 31) of the frame 2 of the display device 1 in the first embodiment in the closed state.

[0173] Furthermore, when the OLED module 3X is bent into a teardrop shape, the angle at which the curved portion 26 of the frame 2X and the end region 36X of the OLED module 3X bend toward the convex side becomes gentler than the angle at which the curved portion 26 of the frame 2 and the end region 36 of the OLED module 3X bend.

[0174] This is because by bending the OLED module 3X into a teardrop shape to disperse the interlayer slip and internal stress, the interlayer slip and internal stress can be adjusted only in the end region 36X of the OLED module.

[0175] In this way, the angle at which the end region 36X of the OLED module warps towards the convex side is gentler than the angle at which the end region 36 of the OLED module warps towards the convex side. As a result, the height Tx of the display device 1X in the off state is lower than the height T of the display device 1 in the off state. This allows the display device 1X to be made thinner overall, thus improving the design of the display device 1X.

[0176] [OLED Module 3X]

[0177] The OLED module 3X has a fixing component 31X instead of the fixing component 31 in the first embodiment. Apart from this, the OLED module 3X has the same configuration as the OLED module 3 in the first embodiment.

[0178] (Fixed component 31X)

[0179] The fixing member 31X is provided on the second display portions 213X and 214X and the curved portions 261 and 262 of the display portion 21X, but not on the first display portions 211X and 212X. In other words, the area where the fixing member 31X is provided on the frame 2X is narrower than that of the fixing member 31 in the first embodiment.

[0180] Therefore, as Figure 9 As shown, when the frame 2X of the display device 1X is bent, the OLED module 3X can be appropriately bent into a teardrop shape.

[0181] [Variation Example]

[0182] In the example above, the display unit 21X includes a first display unit 211X, a first display unit 212X, a second display unit 213X, and a second display unit 214X. However, in this embodiment, the display unit 21X is not limited to being composed of a first display unit and a second display unit.

[0183] In this embodiment, it is sufficient that a portion of the frame 2X’s end region (i.e., the bent portion 261) toward the bending region 241 and a portion of the frame 2X’s end region (i.e., the bent portion 262) toward the bending region 242 are higher than other regions of the frame 2X.

[0184] Therefore, the display unit 21X may consist of only the first display units 211X and 212X, or it may not have the second display units 213X and 214X, but consist of only one set of display units.

[0185] In this case, a portion of the first display portion 211X extending from the second connecting portion 271 toward the bending region 241 and a portion of the first display portion 212X extending from the second connecting portion 272 toward the bending region 242 are higher than other regions of the first display portions 211X and 212X.

[0186] In other words, by providing cutouts (not shown) in other areas of the first display section 211X and 212X of the frame 2X, the other areas of the first display section 211X and 212X become lower.

[0187] Thus, the display device 1X is configured as a simple structure with a set of display sections, and is thin and has excellent design. Similarly, as in the above example, it can offset and reduce the internal stress of each layer of the OLED module 3, making each layer difficult to peel off.

[0188] <Third Implementation Method>

[0189] The display device of the present invention may also include components and an outer casing, in addition to the components of the display device 1 of the first embodiment, as in the display device 1Y of the third embodiment.

[0190] The following uses Figures 10-12 The display device 1Y according to the third embodiment will be described. Furthermore, for ease of explanation, components having the same functions as those described in the above embodiments will be labeled with the same reference numerals, and their descriptions will be omitted.

[0191] Figure 10 This is a side view of an example of the display device 1Y of the third embodiment in the open state. Figure 11 This is a front view (front sectional view) of an example of the display device 1Y of the third embodiment in the open state. Figure 12 This is a top view (top surface sectional view) of an example of the display device 1Y of the third embodiment in the open state. Figure 13 This is a side view of an example of the display device 1Y of the third embodiment in the off state.

[0192] [Display Device 1Y]

[0193] like Figure 10 As shown, the display device 1Y, in addition to having all the components of the display device 1 of the first embodiment, also has a frame 2Y, which replaces the frame 2 in the first embodiment with a component 4 and an outer casing 5. Except for this, the display device 1Y has the same configuration as the display device 1 of the first embodiment.

[0194] [Frame 2Y]

[0195] like Figure 10 As shown, the frame 2Y has a support portion 22Y instead of the support portion 22 in the first embodiment. Apart from this, the frame 2Y has the same configuration as the frame 2 in the first embodiment.

[0196] (Support part 22Y)

[0197] The support portion 22Y is thicker than the support portion 22 in the first embodiment. For example, the support portion 22Y is thickened to the extent that the bottom surface of the support portion 22Y is below the bottom surface of the component 4.

[0198] Therefore, the outer casing 5 can be used to properly wrap the component 4, the frame 2, and the OLED module 3 from the outside.

[0199] [Component 4]

[0200] Component 4 is disposed in the connecting surface S2 of the frame 2Y, in at least a portion of the area other than the end region of at least one side of the frame 2, i.e., the bent portion 26.

[0201] Figures 10-13 In the example shown, components 41 and 42 are provided on the connecting surface S2 of the frame 2Y, specifically on the end region of one side of the frame 2Y, namely the bent portion 261, and the end region of the other side, namely the bent portion 262. In other words, component 4 is not provided on the connecting surface S2 (below) of the bent portion 26. This ensures that there is space (empty space) between the bent portion 26 and the outer fitting 5 for bending the bent portion 26.

[0202] Therefore, the display device 1Y also includes component 4, such as Figure 13 As shown, similar to the display device 1 of the first embodiment, even when the display device 1Y is turned off, the bent portions 261 and 262 bend toward the convex side, and the bent portions 261 and 262 will not interfere with the components 41 and 42.

[0203] As for component 4, it is not particularly limited, but can include known component types such as batteries and substrates.

[0204] [Exterior Design Department 5]

[0205] The outer assembly section 5 assembles the various components of the display device 1Y.

[0206] Specifically, such as Figures 10-12 As shown, with the display device 1Y in a flat, open state, the outer part 5 covers and fixes a portion of the display surface S3 of the OLED module 3, the side of the OLED module 3 and the frame 2Y, the support part 22Y of the frame 2Y and the component 4.

[0207] Specifically, with the display device 1Y in its flat, open state, the outer casing 51 covers and secures a portion of the display surface S3 of the OLED module 3, the side of the curved portion 261 of the OLED module 3 and the frame 2Y, a portion of the support portion 22 of the frame 2Y, and component 41. Similarly, the outer casing 52 covers and secures a portion of the display surface S3 of the OLED module 3, the side of the curved portion 262 of the OLED module 3 and the frame 2Y, a portion of the support portion 22 of the frame 2Y, and component 42.

[0208] In addition, such as Figure 13 As shown, the outer casing 5 folds the display surface S3 of the OLED module 3 inward, and with the display device 1Y folded, it wraps the frame 2Y, the OLED module 3 and the component 4 from the outside.

[0209] Specifically, in the case of the foldable display device 1Y, the outer casing 51 wraps around a portion of the support portion 22Y of the frame 2Y, a portion of the OLED module 3, and component 41 from the outside. Similarly, the outer casing 52 wraps around a portion of the support portion 22Y of the frame 2Y, a portion of the OLED module 3, and component 42 from the outside.

[0210] In this way, the outer casing 5 wraps around the components of the display device IY from the outside, thereby, similar to the display device 1 of the first embodiment, being able to offset and reduce the internal stress of each layer of the OLED module 3, making it difficult to peel off each layer, and being able to properly protect the display device IY.

[0211] This invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. Embodiments obtained by combining the technical means disclosed in different embodiments are also included within the technical scope of this invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

[0212] 〔Summarize〕

[0213] The display device according to the present invention includes: a frame; and an OLED module supported by the frame, having multiple layers including an OLED layer laminated via an adhesive. The frame has one or more connecting portions, which respectively connect one or more bending regions of the frame and at least one end region of the frame to a connecting surface on the opposite side of the support surface supporting the OLED module on a surface of the frame. The bending regions of the frame fold inward over the display surface of the OLED module. When the display surface is folded inward, the connecting portions stretch the end region of the frame in a second direction opposite to the first direction of folding the display surface inward, which is to fold the display surface outward.

[0214] The display device of embodiment 2 of the present invention can also be configured such that, in embodiment 1 above, when the display surface is folded inward, the end region of the frame is bent in the second direction.

[0215] The display device of embodiment 3 of the present invention can also be configured such that, in embodiment 2 described above, in the support surface, in the bending region of the OLED module where the OLED module is bent, the lowest layer of the OLED module is not provided.

[0216] The display device of embodiment 4 of the present invention can also be configured such that, in embodiment 2 or 3 above, the frame has: one or more display portions; a support portion that supports the display portions; one or more curved portions that serve as end regions of the frame; a first connecting portion that rotatably connects one end region of the display portion and one end region of the support portion; and a second connecting portion that rotatably connects the other end region of the display portion and one end region of the curved portion, wherein, when the display surface is folded inward by rotating the display portion around the first connecting portion, the curved portion rotates in the second direction around the second connecting portion.

[0217] The display device of embodiment 5 of the present invention can also be configured such that, in embodiment 4 above, the connecting portion is located at a position lower than the first connecting portion and the second connecting portion.

[0218] The display device of embodiment 6 of the present invention may also be configured such that, in embodiment 4 or 5 above, the second connecting portion is provided on the support surface of the other end region of the display portion and the end region of one of the curved portions, and a cutout portion is provided in the region on the opposite side of the second connecting portion in the connecting surface.

[0219] The display device of embodiment 7 of the present invention may also be configured such that, in any one of embodiments 4 to 6 above, at least one of the first connecting portion and the second connecting portion is a hinge.

[0220] The display device of embodiment 8 of the present invention may also be configured such that, in any one of embodiments 1 to 7 above, at least one end region of the connecting portion is a tapered shape that is inclined inward.

[0221] The display device of embodiment 9 of the present invention may also be configured such that, in any of the embodiments 1 to 8 described above, the connecting part is an SUS plate or a shaft.

[0222] The display device of embodiment 10 of the present invention may also be configured such that, in any one of embodiments 1 to 9 above, the plurality of layers are laminated via a transparent adhesive.

[0223] The display device of embodiment 11 of the present invention may also be configured such that, in any of the embodiments 1 to 10 described above, the height of a portion of the bent area from one end region of the frame toward the bent area of ​​the frame and the height of a portion of the bent area from the other end region of the frame toward the bent area of ​​the frame are higher than the height of other regions of the frame.

[0224] The display device of embodiment 12 of the present invention may also be configured such that, in any of the embodiments 1 to 11 above, a component is provided in at least a portion of the connecting surface other than the end region of at least one of the frames, and an outer mounting portion is provided, wherein the outer mounting portion wraps the frame, the OLED module and the component from the outside when the display surface is folded inward.

[0225] Explanation of reference numerals in the attached figures

[0226] 1, 1X, 1Y: Display devices

[0227] 2, 2X, 2Y: Frame

[0228] 3. 3X: OLED module

[0229] 4, 41, 42: Components

[0230] 5, 51, 52: Exterior Decoration Department

[0231] 21, 21', 21X, 211, 211', 211X, 212, 212', 212X, 213X, 214X: Display Unit

[0232] 22, 22', 22Y: Support section

[0233] 23, 23', 231, 232: First connecting part

[0234] 24, 24', 241, 242: Bending areas

[0235] 26, 261, 261X, 262, 262X: Bends

[0236] 25, 251, 252: Connecting parts

[0237] 26, 36, 36', 36”, 36X, 2511, 2512, 2521, 2522: End regions; 27, 271, 272: Second connecting parts.

[0238] 32, 32', 32”: OLED layer

[0239] 211X, 212X: First display unit (display unit)

[0240] 213X, 214X: Second display unit (display unit)

[0241] D1: First Direction

[0242] D2: Second Direction

[0243] S1: Support surface

[0244] S2: Connecting surface

[0245] S3: Display Surface

Claims

1. A display device, characterized in that, It possesses: Frame; and An OLED module, supported by the frame, has multiple layers, including an OLED layer, stacked together via adhesive. The frame has: Display section; A support portion that supports the display portion; A first connecting portion rotatably connects the display portion and the support portion to form a bent area of ​​the frame; Connecting parts; The curved portion, which serves as the end region of the frame; as well as The second connecting part rotatably connects the display part and the curved part. The connecting portion connects the bending region and the bending portion on a connecting surface opposite to the support surface supporting the OLED module, wherein the bending region folds inward over the display surface of the OLED module. When the display surface is folded inward, the connecting portion stretches the bent portion in a second direction opposite to the first direction of folding the display surface inward, which is the direction of folding the display surface outward.

2. The display device according to claim 1, characterized in that, When the display surface is folded inward, the bent portion bends in the second direction.

3. The display device according to claim 2, characterized in that, The OLED module includes a fixing component that fixes the OLED module to the frame. In the support surface, in the bending area, the OLED module is not provided with the fixing component.

4. The display device according to claim 2 or 3, characterized in that, The frame has: When the display surface is folded inward by rotating the display portion around the first connecting portion, the bent portion can rotate in the second direction around the second connecting portion.

5. The display device according to claim 4, characterized in that, The connecting portion is located below the first connecting portion and the second connecting portion.

6. The display device according to claim 4, characterized in that, The second connecting portion is disposed on the supporting surface of the curved portion. A cutout is provided in the region on the opposite side of the second connecting portion in the connecting surface.

7. The display device according to claim 4, characterized in that, At least one of the first connecting portion and the second connecting portion is a hinge.

8. The display device according to any one of claims 1 to 3, characterized in that, The end region of the connector is an inclined conical shape.

9. The display device according to any one of claims 1 to 3, characterized in that, The connecting part is an SUS plate or a shaft.

10. The display device according to any one of claims 1 to 3, characterized in that, The multiple layers are stacked via a transparent adhesive.

11. The display device according to any one of claims 1 to 3, characterized in that, The height of a portion of the area between the curved section and the bending area is higher than the height of other areas of the frame.

12. The display device according to any one of claims 1 to 3, characterized in that, A component is provided in at least a portion of the connecting surface, excluding the curved portion. The display device also has an outer casing that, when the display surface is folded inward, wraps around the frame, the OLED module, and the components from the outside.

Images