Display module and display device

Abstract

The invention provides a display module and a display device. The display module comprises a display area and a frame area surrounding at least part of the display area, the frame area located on at least one side of the display area comprises a first sub-area, a bending sub-area and a second sub-area, the first sub-area and the second sub-area are connected with the two ends of the bending sub-area respectively, and the first sub-area and the second sub-area are oppositely arranged in the thickness direction of a display panel in the display area; the non-display surface of at least one of the first sub-region and the second sub-region is provided with an exposed region for exposing part of the signal lines; the first heat dissipation part is arranged on one side of the non-display surface of the display panel, the first heat dissipation part is at least located between the first sub-area and the second sub-area in the thickness direction of the display panel in the display area, and the first heat dissipation part penetrates through the exposed area to make contact with the signal line. According to the display panel, the heat dissipation piece is arranged at the position where the signal line is exposed to conduct contact type heat dissipation on the signal line of the display panel, the heat dissipation capacity of the display screen is improved, and the display panel is prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] In recent years, as display devices are widely used in different fields, people have higher and higher requirements for display screens. For example, in organic light-emitting diode (OLED) display devices, there are higher and higher requirements for wide color gamut, low power consumption, high contrast and high brightness. On this basis, in order to meet higher visual effects, it is necessary to improve the luminous efficiency, which leads to an increase in the heat generated by the light-emitting elements and the signal lines connected to the light-emitting elements, resulting in serious heating of the screen.

[0003] Therefore, there is an urgent need for a solution that can solve the problem that a high-brightness display screen has poor heat dissipation effect and thus causes the display panel to be easily damaged. Summary of the invention

[0004] The embodiments of the present application provide a display module and a display device, which are used to solve the problem that the display panel is easily damaged due to poor heat dissipation of the display screen.

[0005] In a first aspect, a display module is provided, which includes a display area and a frame area surrounding at least part of the display area, the frame area located on at least one side of the display area includes a first sub-area, a bending sub-area, and a second sub-area, the first sub-area and the second sub-area are respectively connected to two ends of the bending sub-area, and the first sub-area and the second sub-area are relatively arranged along the thickness direction of the display panel of the display area; the non-display surface of at least one of the first sub-area and the second sub-area is provided with an exposed area, and the exposed area is configured to expose a portion of the signal line arranged in the frame area; a first heat sink is arranged on one side of the non-display surface of the display panel, and the first heat sink is at least located between the first sub-area and the second sub-area along the thickness direction of the display panel in the display area, and the first heat sink passes through the exposed area to contact the signal line.

[0006] In combination with the first aspect, an exposed area is set in the first sub-area, and the first heat dissipation element includes: a first heat-conducting layer, which is at least arranged on a side of the first sub-area facing the non-display surface, and in the orthographic projection of the first heat-conducting layer in the thickness direction of the display panel in the display area to the first sub-area, the first heat-conducting layer at least covers a portion of the exposed area; a first heat-conducting block, which is arranged on a side of the first sub-area facing the non-display surface, and the first heat-conducting block is connected to the first heat-conducting layer, and the first heat-conducting block passes through the exposed area of ​​the first sub-area to contact the signal line; and / or, the second sub-area is set with an exposed area, and the first heat dissipation element includes: a second heat-conducting layer, which is arranged on a side of the second sub-area facing the non-display surface, and in the orthographic projection of the second heat-conducting layer in the thickness direction of the display panel in the display area to the second sub-area, the second heat-conducting layer at least covers a portion of the exposed area; a second heat-conducting block, which is arranged on a side of the second sub-area facing the non-display surface, and the second heat-conducting block is connected to the second heat-conducting layer, and the second heat-conducting block passes through the exposed area of ​​the second sub-area to contact the signal line.

[0007] In combination with the first aspect, both the first sub-area and the second sub-area are provided with exposed areas, and the first heat sink further includes: a thermally conductive connecting layer, located between the first thermally conductive layer and the second thermally conductive layer, and connecting the first thermally conductive layer and the second thermally conductive layer.

[0008] In combination with the first aspect, the material of the thermally conductive connection layer includes thermally conductive glue.

[0009] In combination with the first aspect, in an orthographic projection of the first heat-conducting layer along the thickness direction of the display panel in the display area onto the first sub-area, the first heat-conducting layer at least covers the first sub-area; and / or, in an orthographic projection of the second heat-conducting layer along the thickness direction of the display panel in the display area onto the second sub-area, the second heat-conducting layer covers the second sub-area.

[0010] In combination with the first aspect, in an orthographic projection of the first heat-conducting layer along the thickness direction of the display panel in the display area onto the first sub-area, the first heat-conducting layer covers the first sub-area and at least a portion of the display area.

[0011] In combination with the first aspect, the material of the first heat conducting layer and / or the material of the second heat conducting layer includes at least one of the following materials: graphite, copper, and aluminum.

[0012] In combination with the first aspect, the material of the first heat conducting layer is the same as the material of the first heat conducting block.

[0013] In combination with the first aspect, the material of the second heat conducting layer is the same as the material of the second heat conducting block.

[0014] In combination with the first aspect, the first heat conducting layer and / or the first heat conducting block is configured as copper foil.

[0015] In combination with the first aspect, the second heat conducting layer and / or the second heat conducting block is configured as copper foil.

[0016] In combination with the first aspect, the material of the first thermal conductive layer is a conductive metal material, and the first thermal conductive layer is connected to the safe power supply; and / or the material of the second thermal conductive layer is a conductive metal material, and the second thermal conductive layer is connected to the safe power supply.

[0017] In combination with the first aspect, a bending space is enclosed between the bending sub-area and the first heat sink, and the display module further includes: a second heat sink disposed in the bending space, and the second heat sink at least contacts and cooperates with the non-display surface of the bending sub-area.

[0018] In combination with the first aspect, the second heat dissipation element is in contact with and cooperates with the first heat dissipation element.

[0019] In combination with the first aspect, the material of the second heat sink includes a thermally conductive adhesive having heat conductivity, and the thermally conductive adhesive is filled in the bending space.

[0020] In combination with the first aspect, the polarizing layer, the optical adhesive layer and the cover plate are sequentially stacked in a direction away from the display area, and the polarizing layer is disposed on one side of the display surface of the display panel.

[0021] In a second aspect, a display device is provided, comprising the display module described above.

[0022] The present application provides a display module and a display device. The display module includes a first heat sink disposed on the non-display surface of the display panel, and an exposed area for exposing the signal line is disposed on the non-display surface of the display panel, so that the first heat sink can pass through the exposed area and contact the signal line. By disposing the first heat sink and contacting the first heat sink with the exposed signal line to achieve contact heat dissipation of the signal line, the heat in the display panel can be quickly discharged through the first heat sink, thereby preventing the heat from being concentrated in the display panel and causing damage to the components in the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 A top view of a display module.

[0025] Figure 2 for Figure 1 The cross-sectional view of the display module in the CC direction is shown.

[0026] Figure 3 A cross-sectional view of an exposed area provided in a display module provided in an embodiment of the present application.

[0027] Figure 4 A cross-sectional view of an exposed area in a display module provided in another embodiment of the present application.

[0028] Figure 5 A cross-sectional view of a display module provided in one embodiment of the present application.

[0029] Figure 6 A cross-sectional view of a display module provided in another embodiment of the present application.

[0030] Figure 7 A cross-sectional view of a display module provided in another embodiment of the present application.

[0031] Figure 8 A cross-sectional view of a display module provided in another embodiment of the present application.

[0032] Fig. 9 A cross-sectional view of a display module provided in an embodiment of the present application having a support layer disposed therein.

[0033] Fig.10 A cross-sectional view of a display module provided in another embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0035] Figure 1 A top view of a display module. Figure 2 for Figure 1 The cross-sectional view of the display module in the CC direction is shown. The direction indicated by arrow X is the first direction, the direction indicated by arrow Y is the second direction, and the direction indicated by arrow Z is the thickness direction of the display panel in the display area, which is also the thickness direction Z of the display module. The first direction X and the second direction Y are perpendicular to each other in the horizontal plane, and the thickness direction Z is perpendicular to the horizontal plane.

[0036] like Figure 1 and Figure 2The display module 10 includes a display panel 1, and the display panel 1 includes a display area AA and a frame area NN. The frame area NN at least partially surrounds the display area AA. The display area AA is used to form a display interface of the display device, and the frame area NN is used to bind and connect electronic devices such as driver chips and flexible circuit boards. The display area AA is arrayed with light-emitting elements in multiple rows and columns in the first direction X and the second direction Y. The signal lines 101 arranged in the frame area NN electrically connect the light-emitting elements to the electronic devices so that the display area AA can emit light. Among them, the multiple signal lines 101 concentratedly arranged in the frame area NN form a heating area NS of the frame area NN. It can be understood that when the display module 10 is provided with a frame on all sides, the frame area NN surrounds the display area AA, and the heating area NS can also surround the display area AA. When the curved screen is provided on both sides of the display module 10 without a side frame, the frame area NN is only located on the upper and lower sides or one side of the display area AA. Similarly, the heating area NS can also be only located on the upper and lower sides or one side of the display area AA, without specific limitation.

[0037] Alternatively, if Figure 2 , on the side of the display module 10 provided with a frame, the frame area NN of the display panel 1 is bent so that a part of the frame area NN is located in the same plane as the display area AA and serves as a frame, while the other part is located below the display area AA after being bent. Specifically, the frame area NN includes a first sub-area NN1, a bending sub-area NN3, and a second sub-area NN2, the first sub-area NN1 and the second sub-area NN2 are respectively connected to the two ends of the bending sub-area NN3, and the first sub-area NN1 and the second sub-area NN2 are arranged relatively along the thickness direction Z of the display panel 1 in the display area AA. Among them, the first sub-area NN1 can form the lower frame of the display module 10, the second sub-area NN2 is located below the first sub-area NN1 after being bent by the bending sub-area NN3, and the second sub-area NN2 can be used to arrange the signal line 101 and electronic devices such as the driving chip and the flexible circuit board. Alternatively, the first sub-area NN1 can form the side frame of the display module 10, and the second sub-area NN2 can also be used to arrange the signal line 101. In addition, the bent second sub-region NN2 may be located only below the first sub-region NN1, or may be located below the first sub-region NN1 and partially extend below the display area AA to provide a larger space for connecting other components, without specific limitation.

[0038] Take the left side frame of the display module 10 as an example, and the bent second sub-area NN2 partially extends below the display area AA. Figure 2The display module 10 includes a display panel 1, and the display panel 1 has a display surface 1a and a non-display surface 1b opposite to each other. It can be understood that the display panel 1 may include a substrate layer, a flat layer, a signal line layer, a light-emitting layer, etc. stacked along the thickness direction Z, and the side capable of emitting light and displaying in the display area AA is the front side, that is, the display surface 1a, and the other side is the back side, that is, the non-display surface 1b. When the frame area NN of the display panel 1 is bent, it is necessary to be bent in the direction away from the display surface 1a, so that the non-display surface 1b of the first sub-area NN1 and the non-display surface 1b of the second sub-area NN2 in the display panel 1 are arranged opposite to each other.

[0039] It is understandable that the signal line layer may include multiple signal lines 101 arranged in an insulated manner, the signal lines 101 are located inside the display panel 1, the signal lines 101 may include signal connection lines arranged in the display area AA and below the light-emitting layer, and may also include leads arranged in the frame area NN, and multiple leads are concentrated in the heating area NS, which will not be described in detail. For ease of observation and understanding, the multiple signal lines 101 arranged in the heating area NS are represented by a black shadow due to the small gap, but it does not mean that only one signal line 101 is included, and it will not be emphasized separately later.

[0040] Continue as Figure 2 , so that in the display module 10 after the bending sub-area NN3 is bent, the first sub-area NN1 and the display area AA are located in the same plane, the first sub-area NN1 is located on one side of the display area AA, the first sub-area NN1 and the second sub-area NN2 are located in different planes, aligned and arranged at intervals in the thickness direction Z, the display surfaces 1a of the first sub-area NN1 and the second sub-area NN2 are opposite to each other, and the non-display surfaces 1b of the first sub-area NN1 and the second sub-area NN2 are arranged opposite to each other.

[0041] The display module 10 further includes a polarizing layer 2, an optical adhesive layer 3 and a cover plate 4 which are sequentially stacked in a direction away from the display area AA, and the cover plate 4 at least covers the display surface 1a of the display area AA of the display panel 1. Optionally, in the orthographic projection of the cover plate 4 in the thickness direction Z toward the display panel, the cover plate 4 can cover the first sub-area NN1, the display area AA and the bending sub-area NN3, so as to protect the display panel 1. The specific matching structure of the cover plate 4, the polarizing layer 2 and the optical adhesive layer 3 with the display panel 1 is not described in detail.

[0042] In addition, continue as Figure 2The display module 10 may further include a support layer 5, which may specifically include a first support layer 51 and a second support layer 52. The first support layer 51 is disposed on the non-display surface 1b of the first sub-area NN1 and the display area AA, and the second support layer 52 is disposed on the non-display surface 1b of the second sub-area NN2, so that the first support layer 51 and the second support layer 52 are disposed opposite to each other. Optionally, the first support layer 51 and the second support layer 52 may be connected by a connector 53 to maintain the bending sub-area NN3 in a bent state. It is understood that the connector 53 may include, for example, a metal plate and foam arranged in a stacked manner along the thickness direction Z.

[0043] Among them, a plurality of signal lines 101 are centrally arranged in the heating area NS, and the heating area NS can be set in at least one of the first sub-area NN1 and the second sub-area NN2. If a higher visual effect is to be achieved, the luminous efficiency of the plurality of light-emitting elements of the light-emitting layer needs to be improved, which will cause the light-emitting elements to emit more heat. Similarly, the signal lines 101 connecting the light-emitting elements to the electronic devices in the frame area NN will also emit more heat, especially the heating area NS where the signal lines 101 are centrally arranged will generate more heat, and the heat will be concentrated inside the display panel 1 and will not easily diffuse out, which may easily cause other components in the display panel 1 to be damaged.

[0044] In view of this, the embodiments of the present application provide a display module and a display device to solve the problem that the display panel 1 is easily damaged due to poor heat dissipation effect of the highlight display module 10 .

[0045] Figure 3 A cross-sectional view of an exposed area provided in a display module provided in an embodiment of the present application. Figure 4 A cross-sectional view of an exposed area in a display module provided in another embodiment of the present application. Figure 5 A cross-sectional view of a display module provided in one embodiment of the present application. Figure 6 A cross-sectional view of a display module provided in another embodiment of the present application. Figure 7 A cross-sectional view of a display module provided in another embodiment of the present application. Figure 8 A cross-sectional view of a display module provided in another embodiment of the present application.

[0046] like Figures 3 to 8The display module 10 includes a display panel 1 and a first heat sink 6. The non-display surface 1b of at least one of the first sub-area NN1 and the second sub-area NN2 of the display panel 1 is provided with an exposed area 102. The exposed area 102 is configured to expose a portion of the signal line 101 arranged in the frame area NN. The first heat sink 6 is arranged on one side of the non-display surface 1b of the display panel 1, and the first heat sink 6 is at least located between the first sub-area NN1 and the second sub-area NN2 along the thickness direction Z of the display panel 1 in the display area AA. The first heat sink 6 passes through the exposed area 102 and contacts the signal line 101.

[0047] By utilizing the exposed area 102, at least part of the signal line 101 located in the heating area NS in the display panel 1 is exposed, so that the first heat sink 6 can pass through the exposed area 102 and contact and cooperate with the signal line 101, thereby guiding the heat of the signal line 101 to the outside of the display panel 1 through the first heat sink 6, avoiding heat concentration in the heating area NS, which is beneficial to cooling the display panel 1, thereby avoiding damage to components in the display panel 1.

[0048] Alternatively, if Figure 3 and Figure 4 The exposed area 102 can be set as a through hole structure extending from the non-display surface 1b of the display panel 1 to the inside. The through hole can expose at least part of the signal line 101 of the heating area NS, so that the first heat sink 6 can pass through the through hole and contact and cooperate with the signal line 101.

[0049] It is understandable that the number of through holes can be set to one or more, and the shape of the cross section of the through hole can be circular, square, etc., without specific limitation. In addition, the through hole can be a cylindrical hole structure extending along the thickness direction Z, or a tubular structure extending in a winding manner, as long as one end of the through hole exposes at least part of the signal line 101 of the heating area NS, and the other end can allow part of the first heat sink 6 outside the display panel 1 to extend into and contact the signal line 101, without specific limitation. In the embodiment of the present disclosure, the through hole is set as a cylindrical hole structure extending along the thickness direction Z.

[0050] In addition, the exposed area 102 may be provided only in the first sub-area NN1 (eg Figure 3 ), or may be set only in the second sub-area NN2 (such as Figure 4 ), or can be set in the first sub-area NN1 and the second sub-area NN2 at the same time (such as Figure 6 ), can be adaptively adjusted according to the position of the heating zone NS on the display panel 1. In addition, when the exposed area 102 is set in the corresponding sub-area, only part of the signal lines 101 of the heating zone NS can be exposed, or all the signal lines 101 of the heating zone NS can be exposed (not shown in the figure), which can be adaptively adjusted according to actual heat dissipation requirements.

[0051] In some optional embodiments, the exposed area 102 can also be further configured to expose a portion of the signal line 101 of the display area AA (not shown in the figure), and the signal line 101 corresponds to a signal connection line for connecting the light-emitting element. The first heat sink 6 can pass through the exposed area 102 and contact and cooperate with the signal connection line to further improve the heat dissipation capacity of the display panel 1.

[0052] It should be emphasized that the material of the signal line 101 may be, for example, a copper wire, or may be other metal wires with conductive capability, without specific limitation.

[0053] The following is a detailed description by taking the example that the exposed area 102 is disposed in the heating zone NS and a portion of the signal line 101 in the heating zone NS is exposed.

[0054] In some embodiments, Figure 5 A heating area NS is provided in the first sub-area NN1, an exposed area 102 is provided in the first sub-area NN1, the first heat dissipation element 6 includes a first heat-conducting layer 61 and a first heat-conducting block 62, the first heat-conducting layer 61 is at least provided on a side of the first sub-area NN1 facing the non-display surface 1b, and the first heat-conducting layer 61 is in the orthographic projection of the thickness direction Z of the display panel 1 toward the first sub-area NN1 in the display area AA, the first heat-conducting layer 61 at least covers a portion of the exposed area 102, the first heat-conducting block 62 is provided on a side of the first sub-area NN1 facing the non-display surface 1b, the first heat-conducting block 62 is connected to the first heat-conducting layer 61, and the first heat-conducting block 62 passes through the exposed area 102 of the first sub-area NN1 and contacts the signal line 101. The first heat-conducting block 62 can extend into the exposed area 102, so that one end of the first heat-conducting block 62 can contact the signal line 101, and the other end can be contact-connected to the first heat-conducting layer 61 outside the display panel 1, so that the heat dissipated by the signal line 101 can be guided to the outside of the display panel 1 through the connected first heat-conducting block 62 and the first heat-conducting layer 61, so as to improve the heat dissipation capacity of the display panel 1.

[0055] Optionally, the first heat-conducting block 62 and the first heat-conducting layer 61 can be made of the same heat-conducting material, and the first heat-conducting block 62 and the first heat-conducting layer 61 can be integrally formed. In other examples, the first heat-conducting block 62 and the first heat-conducting layer 61 can be made of different heat-conducting materials, which is not specifically limited.

[0056] It should be emphasized that the materials of the first heat-conducting layer 61 and the first heat-conducting block 62 may include metals or non-metals with high thermal conductivity, such as graphite, copper, and aluminum, without specific limitation.

[0057] It can be understood that, in the orthographic projection of the first heat-conducting layer 61 along the thickness direction Z of the display panel 1 in the display area AA toward the first sub-area NN1, the first heat-conducting layer 61 can cover part of the exposed area 102 (not shown in the figure), or can cover the entire exposed area 102, and can be matched according to the size of the first heat-conducting block 62 provided in the exposed area 102. For example, the size of the first heat-conducting block 62 matches the size of the exposed area 102, and at this time, the first heat-conducting layer 61 can at least cover the entire exposed area 102 in the thickness direction Z, so as to maximize the contact area between the first heat-conducting block 62 and the first heat-conducting layer 61, which is conducive to the diffusion of heat.

[0058] Optionally, continue as Figure 5 In the orthographic projection of the first heat-conducting layer 61 along the thickness direction Z of the display panel 1 in the display area AA toward the first sub-area NN1, the first heat-conducting layer 61 may further at least cover the entire first sub-area NN1, or, as Figure 7 The first heat-conducting layer 61 may further cover the entire first sub-area NN1 and part of the display area AA to further enhance the ability of the heat in the display panel 1 to diffuse outwards. It may be adaptively adjusted according to actual needs without specific limitation.

[0059] In some embodiments, Figure 6 A heating area NS is provided in the second sub-area NN2, and an exposed area 102 is provided in the second sub-area NN2. The first heat dissipation member 6 may further include a second heat-conducting layer 63 and a second heat-conducting block 64. The second heat-conducting layer 63 is provided on the side of the second sub-area NN2 facing the non-display surface 1b, and the second heat-conducting layer 63 is in the orthographic projection of the second sub-area NN2 in the thickness direction Z of the display panel 1 in the display area AA. The second heat-conducting layer 63 at least covers part of the exposed area 102. The second heat-conducting block 64 is provided on the side of the second sub-area NN2 facing the non-display surface 1b, and the second heat-conducting block 64 is connected to the second heat-conducting layer 63. The second heat-conducting block 64 passes through the exposed area 102 of the second sub-area NN2 and contacts the signal line 101. The second heat-conducting block 64 can extend into the exposed area 102, so that one end of the second heat-conducting block 64 can contact the signal line 101, and the other end can be contact-connected to the second heat-conducting layer 63 outside the display panel 1, so that the heat dissipated by the signal line 101 can be guided to the outside of the display panel 1 through the connected second heat-conducting block 64 and the second heat-conducting layer 63, so as to improve the heat dissipation capacity of the display panel 1.

[0060] Optionally, the second heat conducting block 64 and the second heat conducting layer 63 can be made of the same heat conducting material, and the second heat conducting block 64 and the second heat conducting layer 63 can be integrally formed. In other examples, the second heat conducting block 64 and the second heat conducting layer 63 can be made of different heat conducting materials, which is not specifically limited.

[0061] It should be emphasized that the materials of the second heat-conducting layer 63 and the second heat-conducting block 64 may include metals or non-metals with high thermal conductivity, such as graphite, copper, and aluminum, without specific limitation.

[0062] Optionally, the material of the second heat-conducting layer 63 can be the same as that of the first heat-conducting layer 61, and the material of the second heat-conducting block 64 can be the same as that of the first heat-conducting block 62. They can be adaptively adjusted according to actual needs without specific limitation. In the embodiment of the present application, the materials for preparing the first heat-conducting layer 61, the first heat-conducting block 62, the second heat-conducting layer 63 and the second heat-conducting block 64 are the same, and are all set as copper foil. While having thermal conductivity, the copper foil can provide support for the non-display surface 1b of the display panel 1, replacing the function of the original support layer 5, which is conducive to thinning the display module 10 while providing support for the display panel 1.

[0063] It can be understood that, in the orthographic projection of the second heat-conducting layer 63 in the thickness direction Z of the display panel 1 in the display area AA toward the second sub-area NN2, the second heat-conducting layer 63 can cover part of the exposed area 102 or the entire exposed area 102, and can be matched according to the size of the second heat-conducting block 64 provided in the exposed area 102. For example, Figure 6 The size of the second heat-conducting block 64 matches the size of the exposed area 102. At this time, the second heat-conducting layer 63 can at least cover the entire exposed area 102 in the thickness direction Z to maximize the contact area between the second heat-conducting block 64 and the second heat-conducting layer 63, which is beneficial to the diffusion of heat.

[0064] Alternatively, if Figure 7 In the orthographic projection of the second heat-conducting layer 63 in the thickness direction Z of the display panel 1 in the display area AA toward the second sub-area NN2, the second heat-conducting layer 63 can further cover the entire second sub-area NN2 to further enhance the ability of the display panel 1 to diffuse outwardly. It can be adaptively adjusted according to actual needs without specific limitation.

[0065] In some embodiments, Figure 7 When both the first sub-area NN1 and the second sub-area NN2 are provided with the exposed area 102, the first heat-conducting layer 61 and the second heat-conducting layer 63 can be directly connected, that is, the first heat-conducting block 62, the first heat-conducting layer 61, the second heat-conducting block 64 and the second heat-conducting layer 63 can be connected to form an integrated heat-conducting member. Figure 8 The first heat sink 6 may further include a heat-conducting connection layer 65, which is located between the first heat-conducting layer 61 and the second heat-conducting layer 63 and connects the first heat-conducting layer 61 and the second heat-conducting layer 63. The heat-conducting connection layer 65 is provided to connect the first heat-conducting layer 61 and the second heat-conducting layer 63 more stably, replacing the metal plate and foam in the original connector 53, which is conducive to improving the heat dissipation effect.

[0066] Optionally, the material of the thermally conductive connection layer 65 includes thermally conductive glue.

[0067] In an optional embodiment, the material of at least one of the first heat-conducting layer 61 and the second heat-conducting layer 63 can be set to a conductive metal material, such as copper, aluminum, etc. When the first heat-conducting layer 61 and the second heat-conducting layer 63 are both set to conductive metal materials, the corresponding heat-conducting layer needs to be connected to a safe power source, that is, grounded, to prevent a large area of ​​metal from affecting the signal of the signal line layer and avoiding signal crosstalk.

[0068] Fig. 9 A cross-sectional view of a display module provided in an embodiment of the present application having a support layer disposed therein.

[0069] In some embodiments, Fig. 9 On the basis of the above embodiments, a support layer 5 may be provided, the support layer 5 comprising a first support layer 51 and a second support layer 52. The first support layer 51 is provided between the non-display surface 1b of the display panel 1 and the first heat-conducting layer 61. The first support layer 51 is provided with a through hole at a position opposite to the exposed area 102, so that the first heat-conducting block 62 passes through the connection signal line 101 and the first heat-conducting layer 61. The second support layer 52 is provided between the non-display surface 1b of the display panel 1 and the second heat-conducting layer 63. The second support layer 52 is provided with a through hole at a position opposite to the exposed area 102, so that the second heat-conducting block 64 passes through the connection signal line 101 and the second heat-conducting layer 63. The first heat-conducting layer 61 and the second heat-conducting layer 63 can play a supporting role together with the support layer 5, further improving the supporting strength and supporting stability of the display panel 1.

[0070] Fig.10 A cross-sectional view of a display module provided in another embodiment of the present application.

[0071] In some embodiments, Figure 8 and Fig.10 The display module 10 may further include a second heat sink 7. A bending space 103 is enclosed between the bending sub-area NN3 and the first heat sink 6. The second heat sink 7 is disposed in the bending space 103. The second heat sink 7 is in contact with at least the non-display surface 1b of the bending sub-area NN3. The second heat sink 7 is disposed to further improve the heat dissipation capacity of the display panel 1 and improve the support stability of the display panel 1.

[0072] Optionally, the second heat sink 7 may be in contact with and cooperate with the first heat sink 6 , so that heat can be conducted out through the first heat sink 6 and the second heat sink 7 , which is beneficial to heat dissipation of the display panel 1 .

[0073] Optionally, the material of the second heat sink 7 includes a heat-conducting adhesive having heat-conducting capability, and the heat-conducting adhesive is filled in the bending space 103 to ensure the bending stability of the bending area and prevent deformation.

[0074] The present application also provides a display device, which may include the display module 10 described above.

[0075] It is understandable that the display device may be a device having a display module 10, a mobile terminal such as a mobile phone.

[0076] Optionally, the display device may also be a notebook, a tablet computer, a computer, a wearable device, etc., and this application does not impose any specific limitation on this.

[0077] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0078] In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0079] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a display area and a frame area surrounding at least a portion of the display area, the frame area located on at least one side of the display area comprising a first sub-area, a bending sub-area, and a second sub-area, the first sub-area and the second sub-area are respectively connected to two ends of the bending sub-area, and the first sub-area and the second sub-area are arranged opposite to each other along a thickness direction of the display panel in the display area; a non-display surface of at least one of the first sub-area and the second sub-area is provided with an exposed area, and the exposed area is configured to expose a portion of the signal lines arranged in the frame area; A first heat sink is disposed on one side of the non-display surface of the display panel, and the first heat sink is at least located between the first sub-area and the second sub-area along the thickness direction of the display panel in the display area, and the first heat sink passes through the exposed area and contacts the signal line.

2. The display module according to claim 1, characterized in that: The first sub-region is provided with the exposed area, and the first heat dissipation element includes: A first heat-conducting layer is provided at least on a side of the first sub-area facing the non-display surface, and in an orthographic projection of the first heat-conducting layer in the thickness direction of the display panel in the display area onto the first sub-area, the first heat-conducting layer at least covers a portion of the exposed area; A first heat-conducting block is disposed on a side of the first sub-area facing the non-display surface, and the first heat-conducting block is connected to the first heat-conducting layer, and the first heat-conducting block passes through the exposed area of ​​the first sub-area and contacts the signal line; and / or, The second sub-region is provided with the exposed area, and the first heat dissipation element includes: A second heat-conducting layer is disposed on a side of the second sub-area facing the non-display surface, and in an orthographic projection of the second heat-conducting layer in the thickness direction of the display panel in the display area onto the second sub-area, the second heat-conducting layer at least covers a portion of the exposed area; The second heat conducting block is disposed on a side of the second sub-area facing the non-display surface, and the second heat conducting block is connected to the second heat conducting layer. The second heat conducting block passes through the exposed area of ​​the second sub-area and contacts the signal line.

3. The display module according to claim 2, characterized in that: The first sub-area and the second sub-area are both provided with the exposed area, and the first heat dissipation element further includes: a heat-conducting connecting layer, located between the first heat-conducting layer and the second heat-conducting layer, and connecting the first heat-conducting layer and the second heat-conducting layer; Preferably, the material of the thermally conductive connection layer includes thermally conductive glue.

4. The display module according to claim 3, characterized in that: In an orthographic projection of the first heat-conducting layer along the thickness direction of the display panel in the display area onto the first sub-area, the first heat-conducting layer at least covers the first sub-area; and / or, in an orthographic projection of the second heat-conducting layer along the thickness direction of the display panel in the display area onto the second sub-area, the second heat-conducting layer covers the second sub-area; Preferably, in an orthographic projection of the first heat-conducting layer along a thickness direction of the display panel in the display area onto the first sub-area, the first heat-conducting layer covers the first sub-area and at least a portion of the display area.

5. The display module according to claim 2, characterized in that: The material of the first heat-conducting layer and / or the material of the second heat-conducting layer both include at least one of the following materials: graphite, copper, aluminum; Preferably, the material of the first heat-conducting layer is the same as the material of the first heat-conducting block; Preferably, the material of the second heat-conducting layer is the same as the material of the second heat-conducting block; Preferably, the first heat-conducting layer and / or the first heat-conducting block is configured as copper foil; Preferably, the second heat conducting layer and / or the second heat conducting block is / are configured as copper foil.

6. The display module according to claim 2, characterized in that: The material of the first heat-conducting layer is a conductive metal material, and the first heat-conducting layer is connected to a safe power source; and / or, The material of the second heat-conducting layer is a conductive metal material, and the second heat-conducting layer is connected to a safe power source.

7. The display module according to any one of claims 1 to 6, characterized in that: A bending space is enclosed between the bending sub-area and the first heat sink, and the display module further includes: The second heat dissipation element is disposed in the bending space, and the second heat dissipation element is at least in contact with and cooperates with the non-display surface of the bending sub-area.

8. The display module according to claim 7, characterized in that: The second heat dissipation member is in contact with and matched with the first heat dissipation member; Preferably, the material of the second heat sink includes thermally conductive glue having heat conductivity, and the thermally conductive glue is filled in the bending space.

9. The display module according to claim 7, characterized in that: include: A polarizing layer, an optical adhesive layer and a cover plate are sequentially stacked in a direction away from the display area, wherein the polarizing layer is arranged on one side of the display surface of the display panel.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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