Display module and display device

Abstract

The present application discloses a display module and a display device, belonging to the field of display technology. The display module includes: a display panel, a support plate, and a circuit board. The display panel includes a display portion, a first bent portion, and a first connecting portion. The first bent portion and the first connecting portion having at least part of the gate drive circuit are bent to the back of the display portion, and the first connecting portion is connected to the side of the support plate facing away from the display portion. In this way, the influence of the gate drive circuit on the non-display area of ​​the display panel can be reduced, thereby reducing the size of the non-display area on the display panel, and further reducing the frame of the display panel.

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] Currently, display devices are used more and more widely, and commonly used display devices include smart phones, tablet computers, and car displays. With the development of the times, the display device includes a display module, which is used to display images.

[0003] A display module includes a display panel and a circuit board. The display panel includes a display unit, a pixel driving circuit and a gate driving circuit. The display unit and the pixel driving circuit are located in the display area of ​​the display panel, and the gate driving circuit is located in the non-display area of ​​the display panel. The pixel driving circuit is electrically connected to the display unit and the gate driving circuit respectively. The circuit board is located on the back of the display panel, and the lower edge of the display panel can be bent to the back to be bound and connected to the circuit board.

[0004] However, the frame of the display panel in the above-mentioned display module is relatively wide, resulting in a relatively small proportion of the display area of ​​the display panel. Summary of the Invention

[0005] The embodiments of the present application provide a display module and a display device. The technical solution is as follows:

[0006] According to a first aspect of the present application, a display module is provided, comprising: a display panel, a support plate, and a circuit board;

[0007] The display panel includes a display portion, and a first bent portion and a first connecting portion extending from a first edge of the display portion and connected in sequence, the display portion having a display surface and a back surface opposite to each other, the first connecting portion being located on the back surface of the display portion, and the first bent portion including at least a portion of a gate driving circuit;

[0008] The support plate is located on a side of the back surface facing away from the display surface, and the first connecting portion is connected to a side of the support plate facing away from the display portion;

[0009] The circuit board is located on a side of the support plate away from the display portion, and a gap is formed between an end of the first connecting portion away from the first bending portion and the circuit board.

[0010] Optionally, the support plate includes a laminated substrate structure and a boss structure, the boss structure is located on a side of the substrate structure facing away from the display portion, and at least a portion of an orthographic projection of the substrate structure on the display surface is located outside a corresponding orthographic projection of the boss structure on the display surface;

[0011] The first connecting portion is connected to a side of the substrate structure away from the display portion, and the circuit board is connected to a side of the boss structure away from the display portion.

[0012] Optionally, an orthographic projection of the first connecting portion on the display surface and an orthographic projection of the circuit board on the display surface do not overlap with each other.

[0013] Optionally, in a first direction, the distance between the first connecting portion and the circuit board is greater than or equal to 5 mm, and the first direction is a direction parallel to the display surface and perpendicular to the first edge.

[0014] Optionally, an orthographic projection of the first connecting portion on the display surface overlaps with an orthographic projection of the circuit board on the display surface.

[0015] Optionally, in the second direction, the distance between the first connecting portion and the circuit board is greater than or equal to 3 mm, and the second direction is a direction perpendicular to the display surface.

[0016] Optionally, the display module further includes a first filling structure, which is located between the first connecting portion and the circuit board, and is connected to the first connecting portion and the circuit board respectively.

[0017] Optionally, the display module further includes a second filling structure, the second filling structure is located between the first bending portion and the support plate, and the second filling structure is connected to the first bending portion and the support plate respectively.

[0018] Optionally, the display module further includes a third filling structure, which covers a side of the first bending portion facing away from the support plate and is connected to the first bending portion.

[0019] Optionally, in the second direction, the ratio of the thickness of the substrate structure to the first thickness ranges from 10% to 90%, the first thickness may be the sum of the thickness of the substrate structure and the thickness of the boss structure, and the second direction is a direction perpendicular to the display surface.

[0020] Optionally, the substrate structure includes a first plate surface and a second plate surface opposite to each other, the first plate surface is located on a side of the second plate surface facing away from the display portion, and an edge of the first plate surface has a chamfered structure.

[0021] Optionally, the first connecting portion has a second edge facing away from the bending portion;

[0022] The display panel further includes a second bending portion and a second connecting portion extending from the second edge and connected in sequence, wherein the second connecting portion is located on a side of the first connecting portion away from the display portion.

[0023] Optionally, the display module further includes a first support pad, the first support pad is located between the connecting portion and the second connecting portion, and the first support pad is connected to the first connecting portion and the second connecting portion respectively.

[0024] According to another aspect of the present application, a display device is provided, comprising: a power supply component and a display module, the display module being the above-mentioned display module, and the power supply component being used to supply power to the display module.

[0025] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0026] A display module comprising a display panel, a support plate, and a circuit board is provided. The display panel comprises a display portion, a first bent portion, and a first connecting portion. The first bent portion and the first connecting portion, which contain at least a portion of a gate drive circuit, are bent toward the back of the display portion, and the first connecting portion is connected to a side of the support plate facing away from the display portion. In this manner, the influence of the gate drive circuit on the non-display area of ​​the display panel can be reduced, thereby reducing the size of the non-display area on the display panel and, in turn, shrinking the bezel of the display panel. This solves the problem of a wide bezel of the display panel in a display module in the related art, thereby achieving the effect of shrinking the bezel of the display panel.

[0027] In addition, a gap is formed between the end of the first connecting portion facing away from the first bending portion and the circuit board, which can prevent interference between the first connecting portion of the display panel and the circuit board, thereby improving the stability of the display module during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic diagram of the installation of a vehicle-mounted display module;

[0030] Figure 2 This is another installation diagram of the vehicle display module;

[0031] Figure 3 yes Figure 1 A structural schematic diagram of a display module shown;

[0032] Figure 4 yes Figure 1 Another structural schematic diagram of the display module shown;

[0033] Figure 5 1 is a schematic structural diagram of a display module provided in an embodiment of the present application;

[0034] Figure 6 is a structural diagram of another display module provided in an embodiment of the present application;

[0035] Figure 7 This is a schematic structural diagram of another display module provided by this application;

[0036] Figure 8 yes Figure 6 The cross-sectional structure diagram of the display module shown is along the A1-A2 position;

[0037] Figure 9 1 is a schematic structural diagram of a non-display area of ​​a display panel provided in an embodiment of the present application;

[0038] Figure 10 yes Figure 9 The cross-sectional structure diagram of the display panel shown is taken along position B1-B2;

[0039] Figure 11 This is a schematic diagram comparing the frame sizes of a display module provided in an embodiment of the present application;

[0040] Figure 12 It is a structural diagram of another display module;

[0041] Figure 13 is a structural diagram of another display module provided in an embodiment of the present application;

[0042] Figure 14 Looking from a third direction Figure 13 A schematic structural diagram of a display panel shown;

[0043] Figure 15 Looking from the fourth direction Figure 13 A schematic structural diagram of a display panel shown;

[0044] Figure 16 Looking from the fifth direction Figure 13 A schematic structural diagram of a display panel shown;

[0045] Figure 17 is a structural diagram of another display module provided in an embodiment of the present application;

[0046] Figure 18 is a structural diagram of another display panel provided in an embodiment of the present application;

[0047] Figure 19 This is a structural diagram of a support plate provided in an embodiment of the present application;

[0048] Figure 20 is a structural diagram of another display module provided in an embodiment of the present application;

[0049] Figure 21 is a structural diagram of another display module provided in an embodiment of the present application;

[0050] Figure 22 is a structural diagram of another display module provided in an embodiment of the present application;

[0051] Figure 23 is a structural diagram of another display module provided in an embodiment of the present application;

[0052] Figure 24 This is a schematic structural diagram of another display module in the related art;

[0053] Figure 25 yes Figure 24 A schematic diagram of the bending structure of the display module shown;

[0054] Figure 26 yes Figure 24 A schematic diagram of the bending dimensions of the display module shown;

[0055] Figure 27 This is a schematic diagram of the bending dimensions of another display module in the related art;

[0056] Figure 28 Schematic diagram of a process for forming an anti-reflection film layer on a CG;

[0057] Figure 29 A schematic diagram of a process for laminating an explosion-proof film on a CG;

[0058] Figure 30 Schematic diagram of another process for laminating explosion-proof film on CG;

[0059] Figure 31 This is a schematic diagram of the appearance of a display module in the related art;

[0060] Figure 32 It is a structural diagram of another display module.

[0061] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0062] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0063] A flexible display panel is a display panel that can be bent. For example, a flexible display panel can be a display panel including an organic light emitting diode (OLED). Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the installation of a vehicle display module. Figure 2 This is another installation diagram of an in-vehicle display module. The in-vehicle display module 100 can be used in an in-vehicle central control device, which can also be called a vehicle computer or a vehicle host. With the development of intelligent driving technology, the size of in-vehicle display modules 100 is increasing, and in-vehicle display modules 100 have higher requirements for display brightness, display uniformity, and display temperature rise.

[0064] Please refer to Figure 3 and Figure 4 , Figure 3 yes Figure 1 A structural diagram of the display module 100 is shown in FIG. Figure 4 yes Figure 1 Another structural diagram of the display module 100 is shown. Figure 3 Shown Figure 1 The structure of one display module 100 in the two display modules 100 spliced ​​together is shown. Figure 4 Shown Figure 1 The structure of two display modules 100 in the two display modules 100 spliced ​​together is shown. The display module 100 includes a display panel 101. The display panel 101 has a display area (English: Active Area; abbreviated: AA) and a non-display area arranged around the display area.

[0065] The display panel 101 may further include an electrically connected COF (Chip On Film) structure and a rigid circuit board 102 (Printed Circuit Board; PCB).

[0066] Since the display panel 101 in the vehicle-mounted display module 100 is relatively large, the frame of the display panel 101 is relatively wide. Figure 3 As shown, when the vehicle display module 100 includes two display panels 101 spliced ​​together, the width of the border between the two display panels 101 is further increased. Figure 4As shown, because the left and right borders of the elongated display panel 101 are wider than those of the square display panel 101, and the top border of the elongated display panel 101 is narrower than the left and right borders, this results in a significant visual difference when the user uses the vehicle-mounted display module 100, resulting in a poor user experience. The left and right borders of the display panel 101 correspond to the area where the GOA circuit is provided on the display panel 101.

[0067] The embodiments of the present application provide a display module and a display device that can solve the problems existing in the related art.

[0068] Please refer to Figure 5 and Figure 6 , Figure 5 is a structural diagram of a display module 200 provided in an embodiment of the present application. Figure 6 is a structural diagram of another display module provided in an embodiment of the present application. Figure 7 This is a structural diagram of another display module provided by this application. Figure 8 yes Figure 6 The cross-sectional structure diagram of the display module along the A1-A2 position is shown. The display module 200 may include: a display panel 201, a support plate 202 and a circuit board 203. It is understood that, Figure 6 The circuit board 203 is located on the back side p2 of the display portion 2011 of the display panel 201 .

[0069] The display panel 201 may include a display portion 2011, and a first bent portion 2012 and a first connecting portion 2013 extending from a first edge of the display portion 2011 and connected in sequence. The display portion 2011 has a display surface p1 and a back surface p2 opposite to each other. The first connecting portion 2013 is located on the back side of the display portion 2011. In other words, the first connecting portion 2013 is located outside the back surface p2 of the display portion 2011. The display portion 2011, the first bent portion 2012, and the first connecting portion 2013 may be an integral structure.

[0070] The first bent portion 2012 includes at least a portion of a gate driver array (GOA). The display panel 201 may include a plurality of electrically connected display units and a plurality of gate signal lines. The plurality of gate signal lines may be electrically connected to the gate driver circuit to transmit gate drive signals to the plurality of display units via the plurality of gate signal lines. The display units may include light-emitting units and pixel driver circuits.

[0071] The support plate 202 can be located on the side of the back surface p2 facing away from the display surface p1. The first connecting portion 2013 is connected to the side of the support plate 202 facing away from the display portion 2011. The first connecting portion 2013 and the side of the support plate 202 facing away from the display portion 2011 can be bonded together, which can ensure greater stability of the bent first bent portion 2012 and the first connecting portion 2013. At least a portion of the gate driver circuit can also be located in the first connecting portion 2013.

[0072] Because the display panel 201 has a display area and a non-display area located outside the display area, and the gate driver circuit is located in the non-display area of ​​the display panel 201, the size of the non-display area on the display panel 201 in a direction parallel to the display surface p1 can be reduced by bending the first bent portion 2012, which includes at least a portion of the gate driver circuit, to the back surface p2 of the display portion 2011, away from the display surface p1. In other words, the impact of the multiple second pads used for detection on the non-display area of ​​the display panel 201 can be reduced, thereby reducing the bezel of the display panel 201. This solves the problem of a wide bezel of the display panel 201 in the related art, thereby achieving the effect of reducing the bezel of the display panel 201.

[0073] The circuit board 203 is located on the side of the support plate 202 facing away from the display portion 2011. A gap is defined between the end of the first connecting portion 2013 facing away from the first bent portion 2012 and the circuit board 203. This gap prevents interference between the first connecting portion 2013 of the display panel 201 and the circuit board 203. It also prevents heat generated by the circuit board 203 during operation from affecting the first connecting portion 2013 of the display panel 201, thereby improving the stability of the display module 200 during operation.

[0074] In summary, the embodiments of the present application provide a display module comprising a display panel, a support plate, and a circuit board. The display panel comprises a display portion, a first bent portion, and a first connecting portion. The first bent portion and the first connecting portion having at least a portion of the gate drive circuit are bent to the back of the display portion, and the first connecting portion is connected to the side of the support plate facing away from the display portion. In this way, the influence of the gate drive circuit on the non-display area of ​​the display panel can be reduced, thereby reducing the size of the non-display area on the display panel, and further reducing the frame of the display panel. This can solve the problem of the wide frame of the display panel in the display module in the related art, and achieve the effect of reducing the frame of the display panel.

[0075] In addition, a gap is formed between the end of the first connecting portion facing away from the first bending portion and the circuit board, which can prevent interference between the first connecting portion of the display panel and the circuit board, thereby improving the stability of the display module during operation.

[0076] Please refer to Figure 9 and Figure 10 , Figure 9 2 is a schematic structural diagram of a non-display area of ​​a display panel 201 provided in an embodiment of the present application. Figure 10 yes Figure 9 The cross-sectional structure diagram of the display panel along the B1-B2 position is shown. Figure 10 The display panel 201 shown also includes a first power line, which can be a VSS line. The gate drive circuit and the first power line can be located in the first bent portion 2012 and the first connecting portion 2013. It is understood that when the bending radius of the first bent portion 2012 is large, the first bent portion 2012 can include the gate drive circuit and a portion of the first power line, and the first connecting portion 2013 can include another portion of the first power line; when the bending radius of the first bent portion 2012 is small, the first bent portion 2012 can include a portion of the gate drive circuit, and the first connecting portion 2013 can include another portion of the gate drive circuit and the first power line.

[0077] The display panel 201 includes a base substrate and a display unit (not shown in the figure), a pixel driving circuit (not shown in the figure), a virtual circuit, a gate driving circuit, and a first power line located on the base substrate; the pixel driving circuit is located in the display area, and the virtual circuit, the gate driving circuit and the first power line are located in the non-display area.

[0078] Exemplary, the display panel 201 also includes a plurality of data lines and a plurality of gate lines positioned at the display area, the display panel 201 also includes a plurality of display units and a driving circuit positioned at the display area, the driving circuit is electrically connected to the display unit, for driving the plurality of display units to emit light, and the plurality of data lines and the plurality of gate lines are all electrically connected to the driving circuit. The gate driving circuit can be positioned at the non-display area, and the gate driving circuit can be electrically connected to the plurality of gate lines. The display panel 201 can include two groups of gate driving circuits, and the two groups of gate driving circuits can be positioned at the two sides of the display area respectively, and are both connected to the driving circuit in the display area.

[0079] Please refer to Figure 7 The display panel 201 may also include a COF structure 204, which includes a driver chip (or integrated circuit; English: integrated circuit; abbreviated: IC) and a flexible printed circuit board (English: Flexible Printed Circuit Board; abbreviated: FPC). The COF structure 204 uses a grain soft film assembly technology to fix the driver chip to the flexible printed circuit board. The flexible printed circuit board can be located in the non-display area and electrically connected to the multiple data lines and gate drive circuits in the display area. The flexible printed circuit board can also be bent to the back side p2 of the display panel 201 and bound to the circuit board 203.

[0080] Please refer to Figure 9 and Figure 10 The non-display area of ​​the display panel 201 can be divided into the AA to GOA region, the GOA region, the VSS region, and the VSS to PE (Panel Edge; Translation: Display Panel 201 Edge) region. The VSS to PE region may include a crack dam structure (English: Crack Dam, abbreviated: CD). In an exemplary embodiment, the first bending portion 2012 may include structures located in the AA to GOA region, the GOA region, the VSS region, and a portion of the VSS to PE region, and the first connecting portion 2013 may include a structure located in another portion of the VSS to PE region.

[0081] The display panel 201 may include a base substrate and a first power line (VSS) located on the base substrate, a first gate driving circuit (EM GOA; EG), a second gate driving circuit (Reset GOA; RG), a third gate driving circuit (Gate GOA; GG), a second power line (VDD), a data line (SD), a reset signal line (Vint), a first planar layer (PLN1), a second planar layer (PLN2), a pixel defining layer (PDL), a first encapsulation layer (CVD1), an inkjet printing layer (IJP) and a second encapsulation layer (CVD2) and other film layers.

[0082] Please refer to Figure 11 , Figure 11 is a schematic diagram comparing the frame sizes of a display module 200 provided in an embodiment of the present application. Figure 11 , which is a schematic diagram comparing the frame size of a display module 100 in a related art and the frame size of a display module 200 in this application, Figure 11 The display module 100 in the related art can be Figure 1 The cross-sectional structure diagram of the display module 100 is shown in FIG. Figure 11 The display panel 101 in the display module 100 in the related art is not bent. In the related art, the bezel of the display panel 101 is reduced by compressing the size of the GOA circuit, compressing the size of the VSS, compressing the size of the edge (margin) of the display panel 101, and introducing the GOA circuit into the AA area. However, the above-mentioned methods of reducing the bezel of the display panel 101 in the related art will have an adverse effect on the image quality and brightness of the display panel 101, the heat generated by the display panel 101 during use, and the yield of the display panel 101.

[0083] Compared to the related art method of reducing the bezel of the display panel 201, the embodiment of the present application reduces the bezel size of the display panel 201 by bending the non-display area having the gate drive circuit. This eliminates the need to compress structures such as the gate drive circuit and the first power line in the display panel 201. This can reduce the impact on image quality, image brightness, heat generation during use of the display panel 201, and the yield rate of the display panel 201, thereby improving the display effect of the display panel 201. In addition, the size of the bezel K1 in the embodiment of the present application is smaller than the size of the bezel K2 in the related art.

[0084] In an exemplary embodiment, please refer to Figure 8 The display module 200 may further include a backing film layer 213 (black film, abbreviated: BF) and a pressure-sensitive adhesive layer 214 (PSA, abbreviated: PSA) located between the display portion 2011 and the support plate 202. The backing film layer 213 is located on the side of the pressure-sensitive adhesive layer 214 facing away from the support plate 202. The display module 200 may further include a polarizer layer 215 (POL, abbreviated: POL) located on the side of the display portion 2011 facing away from the support plate 202 and stacked in a direction away from the display portion 2011, an optically clear adhesive layer 216 (OCA, abbreviated: OCA), and a cover structure 217. The cover structure may be a glass cover (CG, abbreviated: coverglass).

[0085] Please refer to Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 , Figure 12 is a structural diagram of another display module 200. Figure 12 is a structural diagram of another display module 200 provided in an embodiment of the present application. Figure 14 is looking from a third direction D3 Figure 11 The structural diagram of the display panel 201 is shown in FIG. Figure 15 Looking from the fourth direction D4 Figure 11 The structural diagram of the display panel 201 is shown in FIG. Figure 16 Looking from the fifth direction D5 Figure 11 The structural diagram of the display panel 201 shown is, Figure 14 It is from Figure 13 The left side of the display panel 201 is shown looking towards Figure 13 The structural diagram of the display panel 201 is shown in FIG. Figure 15 It is from Figure 13 The upper side of the display panel 201 is shown looking toward Figure 13 The structural diagram of the display panel 201 is shown in FIG. Figure 16 It is from Figure 13 The bottom side of the display panel 201 is shown looking toward Figure 13 The structure diagram of the display panel 201 is shown. Figure 12 for Figure 1 The back structure diagram of the display module 200 in the related art is shown as follows. Figure 12 and Figure 13 As shown, the display panel 201 in the related art is located on the side of the support plate 202 close to the display panel 201, and the left and right sides of the display panel 201 in the embodiment of the present application are bent to the side of the support plate 202 away from the display surface of the display panel 201.

[0086] Please refer to Figure 15 In an alternative embodiment, the support plate 202 may include a stacked substrate structure 2021 and a boss structure 2022. The boss structure 2022 may be located on a side of the substrate structure 2021 facing away from the display portion 2011. At least a portion of the orthographic projection of the substrate structure 2021 on the display surface p1 may be located outside the orthographic projection of the corresponding boss structure 2022 on the display surface p1. The first connecting portion 2013 is connected to the side of the substrate structure 2021 facing away from the display portion 2011, and the circuit board 203 is connected to the side of the boss structure 2022 facing away from the display portion 2011.

[0087] That is, in the third direction D3 , the size of the boss structure 2022 may be smaller than the size of the substrate structure 2021 , and in the fourth direction D4 , the size of the boss structure 2022 may be the same as the size of the substrate structure 2021 .

[0088] Since the COF structure 204 can be bent from the third edge of the display panel 201 to the side of the support plate 202 away from the display part 2011, and is bound and connected to the circuit board 203 located on the side of the support plate away from the display part 2011, the size of the boss structure 2022 in the embodiment of the present application can be the same as the size of the substrate structure 2021 in the fourth direction D4, so that the COF structure 204 can be located on the same surface as the circuit board 203, which facilitates the binding connection between the COF structure 204 and the circuit board 203.

[0089] The third edge can be Figure 13 The third edge may be perpendicular to the first edge, and the display panel 201 may include two opposite first edges.

[0090] In addition, arranging the first connecting portion 2013 and the circuit board 203 on different surfaces can avoid interference between the first connecting portion 2013 and the circuit board 203, and can also increase the heat dissipation area on the support plate 202, thereby improving the heat dissipation effect of the circuit board 203 and the display panel 201 in the display module 200.

[0091] Please refer to Figure 8 In an optional embodiment, the orthographic projection of the first connecting portion 2013 on the display surface p1 and the orthographic projection of the circuit board 203 on the display surface p1 do not overlap each other. This can be achieved by optimizing the circuit layout on the circuit board 203 and increasing the number of layers of the circuit board 203. Figure 6 In the structure shown in FIG, the first connection portion 2013 of the display panel 201 and the circuit board 203 are staggered in a direction perpendicular to the display surface p1. In this case, the orthographic projection of the first connection portion 2013 on the first plane and the orthographic projection of the circuit board 203 on the first plane may not overlap, or the orthographic projection of the first connection portion 2013 on the first plane and the orthographic projection of the circuit board 203 on the first plane may overlap, which is not limited in this embodiment of the present application. The first plane is a plane perpendicular to the display surface p1 and parallel to the first edge.

[0092] In an alternative embodiment, a distance L1 between the first connection portion 2013 and the circuit board 203 in the first direction D1 is greater than or equal to 5 mm. The first direction D1 is parallel to the display surface p1 and perpendicular to the first edge. This prevents interference between the first connection portion 2013 and the circuit board 203.

[0093] Please refer to Figure 17 , Figure 17 This is a schematic diagram of the structure of another display module provided by an embodiment of the present application. The orthographic projection of the first connecting portion 2013 on the display surface p1 overlaps with the orthographic projection of the circuit board 203 on the display surface p1. This can be achieved by reducing the thickness of the substrate structure 2021 and increasing the thickness of the boss structure 2022 to increase the height difference between the side of the boss structure 2022 facing away from the display portion 2011 and the side of the substrate structure 2021 facing away from the display portion 2011. Figure 17 The first connection portion 2013 of the display panel 201 and the circuit board 203 are staggered in the second direction D2. In this case, the orthographic projection of the first connection portion 2013 on the first plane and the orthographic projection of the circuit board 203 on the first plane do not overlap each other.

[0094] In an optional embodiment, in the second direction D2, the distance L2 between the first connection portion 2013 and the circuit board 203 is greater than or equal to 3 mm, and the second direction D2 is perpendicular to the display surface p1. In this way, interference between the first connection portion 2013 and the circuit board 203 can be avoided.

[0095] Please refer to Figure 18 , Figure 18 2 is a schematic structural diagram of another display panel 201 provided in an embodiment of the present application. In an optional embodiment, the display module 200 further includes an adhesive layer 205. The adhesive layer 205 can be located between the first connecting portion 2013 and a side of the support plate 202 facing away from the display portion 2011. That is, the adhesive layer 205 can be located between the first connecting portion 2013 and the substrate structure 2021 of the support plate 202. The adhesive layer 205 can be used to bond the first connecting portion 2013 and the support plate 202. The material of the adhesive layer 205 can include thermally conductive adhesive. Exemplarily, the thickness of the adhesive layer 205 in the second direction D2 can be 0.05 mm, and the thickness of the first connecting portion 2013 in the second direction D2 can be greater than 0.1 mm. Exemplarily, the material of the thermally conductive adhesive can include adhesive and thermally conductive particles. The thermally conductive particles can be at least one of ceramic particles, boron nitride particles, and aluminum nitride particles.

[0096] The display module 200 may further include a first filling structure 206 . The first filling structure 206 may be located between the first connection portion 2013 and the circuit board 203 , and the first filling structure 206 may be connected to the first connection portion 2013 and the circuit board 203 , respectively.

[0097] A filling material can be injected between the first connection portion 2013 and the circuit board 203 using a low-temperature injection molding process to form a filling structure. The filling material can include at least one of epoxy resin and silicone. The first filling structure 206 can be used to further secure the first connection portion 2013 to prevent the first connection portion 2013 from peeling off and colliding with the circuit board 203 when the display module 200 is subjected to external vibrations.

[0098] The filling material may be a negative thermal conductive material, that is, the negative thermal conductive material may conduct heat toward a side away from the display panel 201 .

[0099] The distance between the first bending portion 2012 and the display area near the connection with the display portion 2011 is greater than or equal to 30 microns, that is, the distance between the bending points on the left and right sides of the display panel 201 and the display area is greater than or equal to 30 microns.

[0100] In an optional embodiment, the display module 200 may further include a second filling structure 207. The second filling structure 207 may be located between the first bent portion 2012 and the support plate 202, and the second filling structure 207 may be connected to the first bent portion 2012 and the support plate 202, respectively. The second filling structure 207 may further secure the first bent portion 2012 and prevent the first bent portion 2012 from deforming when subjected to force.

[0101] In an optional embodiment, the display module 200 may further include a third filling structure 208, which may cover a side of the first bent portion 2012 facing away from the support plate 202 and be connected to the first bent portion 2012. The second filling structure 207 may further secure the first bent portion 2012. Furthermore, by disposing the third filling structure 208 outside the first bent portion 2012 of the display panel 201 to protect the first bent portion 2012, damage to the first bent portion 2012 caused by external impact forces may be avoided. The third filling structure 208 may also protect the first bent portion 2012 of the display panel 201 from dust and water, thereby optimizing the impact resistance of the display module 200.

[0102] The first filling structure 206 , the second filling structure 207 and the third filling structure 208 may be an integral structure formed by a one-time low-temperature injection molding process, which can simplify the construction process.

[0103] Please refer to Figure 19 , Figure 19 This is a schematic diagram of the structure of a support plate 202 provided in an embodiment of the present application. In an optional embodiment, in the second direction D2, the ratio of the thickness of the substrate structure 2021 to the first thickness ranges from 10% to 90%. The first thickness can be the sum of the thickness of the substrate structure 2021 and the thickness of the boss structure 2022.

[0104] For example, the thickness of substrate structure 2021 can range from 0.1 mm to 1 mm. The first thickness can range from 1 mm to 1.15 mm. Considering the lightweight design of display module 200, the difference between the first thickness and the substrate thickness is greater than or equal to 0.15 mm (0.05 mm for adhesive layer 205 + 0.1 mm for first connecting portion 2013) to prevent first connecting portion 2013 from protruding from support plate 202.

[0105] Please refer to Figure 19In an alternative embodiment, the substrate structure 2021 may include a first surface b1 and a second surface b2 facing each other. The first surface b1 is located on the side of the second surface b2 facing away from the display portion 2011. The edge of the first surface b1 has a chamfered structure c1. The chamfered structure c1 may be a chamfered or rounded structure. This prevents stress concentration at the point where the display panel 201 contacts the support plate 202 after being bent to the back surface p2, thereby preventing damage to the display panel 201.

[0106] Please refer to Figure 20 , Figure 20 This is a structural schematic diagram of another display module 200 provided in an embodiment of the present application. In an optional embodiment, the first connecting portion 2013 has a second edge facing away from the bending portion; the display panel 201 also includes a second bending portion 2014 and a second connecting portion 2015 extending from the second edge and connected in sequence, and the second connecting portion 2015 is located on the side of the first connecting portion 2013 facing away from the display portion 2011. In this way, the display panel 201 can be bent twice through the first bending portion 2012 and the second bending portion 2014, so that the first connection portion 2013 and the second connection portion 2015 of the display panel 201 are stacked and arranged on the side of the back side p2 of the display panel 201 away from the display surface p1. In this way, by arranging the first connection portion 2013 and the second connection portion 2015 more concentratedly on the back side p2 of the display panel 201, the area occupied by the first connection portion 2013 and the second connection portion 2015 of the display panel 201 on the back side p2 of the display panel 201 can be reduced, so as to reduce the risk of interference between the display panel 201 and the circuit board 203, and the effect of optimizing the occupied space of the display module 200 can be achieved.

[0107] Please refer to Figure 20 Optionally, the display module 200 further includes a first support pad 209, which is located between the connecting portion and the second connecting portion 2015, and is connected to the first connecting portion 2013 and the second connecting portion 2015, respectively. The first support pad 209 can be bonded to the first connecting portion 2013 and the second connecting portion 2015, respectively. In this way, the first support pad 209 can provide support and prevent the first connecting portion 2013 and the second connecting portion 2015 from being deformed by external pressure. The first support pad 209 can also prevent the second connecting portion 2015 from being affected by the bending stress of the second bent portion 2014 and moving away from the display surface p1, thereby improving the stability of the second bent portion 2014.

[0108] The first support pad 209 can be bonded to the first connection portion 2013 and the second connection portion 2015 respectively by double-sided tape with a thickness of millimeters. The first support pad 209 is manufactured by injection molding, CNC machine tool technology, powder metallurgy technology, etc.

[0109] Please refer to Figure 21 , Figure 21 FIG2 is a schematic structural diagram of another display module 200 provided in an embodiment of the present application. In an optional embodiment, the display module 200 may further include a second support pad 210. The second support pad 210 is located on a side of the first support portion away from the second support portion. The second support pad 210 is connected to the first support portion. The second support pad 210 has a curved surface that is convex toward the second bend portion 2014, and the curved surface matches the shape of the inner wall of the second bend portion 2014. The curved surface can be parallel to the inner wall of the second bend portion 2014 (i.e., the concave surface of the second bend portion 2014), and the distance between the curved surface of the second support pad 210 and the concave surface of the second bend portion 2014 can be 0.1 mm. This can prevent the second bend portion 2014 from undergoing significant deformation after being subjected to external forces (such as vibration, compression, etc.).

[0110] Please refer to Figure 22 , Figure 22 This is a structural schematic diagram of another display module 200 provided in an embodiment of the present application. In an optional implementation, the display module 200 may also include a fourth filling structure 212 located between the second bending portion 2014 and the circuit board 203, which can further enhance the stability of the second bending portion 2014.

[0111] Please refer to Figure 23 , Figure 23 2 is a schematic structural diagram of another display module 200 provided in an embodiment of the present application. In an optional embodiment, the support plate 202 may have a groove 211, the circuit board 203 may be located in the groove 211, and the first connecting portion 2013 may be located outside the groove 211. In this way, interference between the circuit board 203 and the first connecting portion 2013 can also be avoided.

[0112] Please refer to Figure 24 、 Figure 25 、 Figure 26 and Figure 27 , Figure 24 is a structural diagram of another display module 100 in the related art. Figure 25 yes Figure 24 The bending structure diagram of the display module 100 is shown in FIG. Figure 26 yes Figure 25 The bending dimension diagram of the display module 100 is shown in FIG. Figure 27 It is a schematic diagram of the bending dimensions of another display module 100 in the related art. Figure 24The figure is a schematic diagram of the structure of the display module 100 at two different viewing angles: a first viewing angle and a second viewing angle. The display module 100 also includes a composite film layer (SCF) located between the display panel 101 and the support plate, and multiple film layers stacked on the display panel 101 (PNL). The multiple film layers include a bottom optical clear adhesive layer (BOCA), a bottom optical clear adhesive layer (BOCA), a touch film layer (SEN), a polarizer (POL), a top optical clear adhesive (TOCA), and a transparent cover (CG). In the related art, these film layers can be bent together with the display panel 101 to a certain curvature to visually achieve a narrow-frame display effect.

[0113] like Figure 26 As shown, the edge of the display module 100 has a curvature of 55°, a bending radius R of 12 mm, a projection frame of the display module 100 of 2.6 mm, and a frame width of the display module 100 before bending of 4 mm. Figure 27 As shown, the edge curvature is 80°, the bending radius R is 11 mm, and the projected frame of the display module 100 is 1.3 mm. It can be seen that bending the edge of the display module 100 at a larger angle can further reduce the visual frame.

[0114] but Figure 24 The process and design shown have the following risks. First, the CG mold opening cost risk is high. The mold opening cost of the CG shape with curved sides is high. Second, the contour of the CG bending area fluctuates greatly, resulting in a low yield of the formed CG. Third, the yield of the anti-reflection (AR) film formed on the CG is low. Please refer to Figure 28 , Figure 28 This is a schematic diagram of the process of forming an anti-reflection film on CG. Since the bending area is not perpendicular to the evaporation direction of the AR material, the thickness of the AR film is not uniform, which produces a large visual color difference. In other words, the amount of ion sputtering in the evaporation process is not uniformly distributed on the curved surface, resulting in obvious differences in the film layer. Fourthly, it is difficult to attach explosion-proof film to CG. Please refer to Figure 29 and Figure 30 , Figure 29 This is a schematic diagram of the process of laminating explosion-proof film on CG. Figure 30 This is another process diagram for laminating explosion-proof film on CG. Figure 29As shown, the CG remains stationary while the roller (Ro) moves to attach the explosion-proof film to the CG. Due to the curvature of the CG's edge bend, the roller's pressure direction is not perpendicular to the CG, resulting in uneven bonding pressure, ultimately leading to bonding bubbles and insufficient bonding accuracy. Figure 27 As shown, the carrier that carries the CG can also rotate so that the roller can better vertically contact the edge bending area of ​​the CG to improve the lamination effect of the explosion-proof film, but the cost of this process is relatively high. Fifthly, at a wide viewing angle, the bending area of ​​the display module 100 has a large color deviation problem. For example, the bending areas on both sides of the display module 100 are prone to severe color deviation or even greening problems at a wide viewing angle. Sixthly, please refer to Figure 31 , Figure 31 This is a schematic diagram of the appearance of a display module 100 in the related art. During the bonding process between the CG and other film layers in the display module 100, due to the uneven force applied to the bending area and the flat area, obvious mold marks (orange peel texture) will appear on the display module 100 after bonding, affecting the product appearance. In addition, please refer to Figure 32 , Figure 32 This is another structural diagram of a display module 100. Since the area of ​​the display panel 101 connected to the COF structure cannot be bent, and the space required for the CG to bend is large, the process of bending the edge of the display module 100 to a certain curvature places high demands on the structural design of the display module 100. For example, Figure 32 The diagram is a schematic diagram of the structure of two different sizes of vehicle-mounted display modules, wherein the two different sizes of vehicle-mounted display modules are a 15.05-inch (English: inch) vehicle-mounted module and a 15.6-inch (English: inch). Since the distance between the edge (right edge) of the visible display panel and the COF structure in the 15.05-inch (English: inch) vehicle-mounted module is 12 mm, this distance is large and can provide sufficient space for CG bending, so the display module can be processed to bend the edge with a certain curvature. Since the distance between the edge (right edge) of the visible display panel and the COF structure in the 15.65-inch (English: inch) vehicle-mounted module is 3.4 mm, this distance is small, making it difficult to bend the CG in the display module. Therefore, it is difficult to implement the process of bending the edge with a certain curvature of the display module 100.

[0115] The support plate 202 in the embodiment of the present application can be an aluminum plate (Al), SCF or stainless steel (SUS). In addition, the display module 200 in the present application does not need to compress the packaging frame of the display panel 201, which can make the packaging effect of the display module 200 better, and the CG can be flatly bonded with other film layers, so the above-mentioned risk problems will not occur, that is, compared with the CG with curved sides in the related art, the manufacturing difficulty of the CG in the embodiment of the present application is lower, the CG yield is higher, the yield of the anti-reflection (AR) film layer formed on the CG is higher, and the difficulty of bonding the explosion-proof film on the CG is lower. In the process of bonding the CG and other film layers in the display module 200, since the bonding areas of the CG are all flat areas, the force is uniform, so that the flatness of the bonded display module is better. In addition, since the embodiment of the present application only bends the non-display area located on the display panel, it will not cause the problem of color deviation of the bent part of the display module under a large viewing angle. Moreover, the display panel in the embodiment of the present application is a flexible display panel, which is less difficult to bend than the bending difficulty of the entire display module in the related art. Therefore, the process of bending the display panel in the present application has lower requirements on the structural design of the display module 200, which can reduce the design and manufacturing difficulty of the display module.

[0116] In summary, the embodiments of the present application provide a display module comprising a display panel, a support plate, and a circuit board. The display panel comprises a display portion, a first bent portion, and a first connecting portion. The first bent portion and the first connecting portion having at least a portion of the gate drive circuit are bent to the back of the display portion, and the first connecting portion is connected to the side of the support plate facing away from the display portion. In this way, the influence of the gate drive circuit on the non-display area of ​​the display panel can be reduced, thereby reducing the size of the non-display area on the display panel, and further reducing the frame of the display panel. This can solve the problem of the wide frame of the display panel in the display module in the related art, and achieve the effect of reducing the frame of the display panel.

[0117] In addition, a gap is formed between the end of the first connecting portion facing away from the first bending portion and the circuit board, which can prevent interference between the first connecting portion of the display panel and the circuit board, thereby improving the stability of the display module during operation.

[0118] In addition, an embodiment of the present application further provides a display device, which may include: a power supply component and a display module, wherein the display module is a display module in any of the above embodiments, and the power supply component is used to power the display module. The display device may also include a circuit protection board, a middle frame, and a back cover. The circuit protection board may be electrically connected to the power supply component, which may be a battery. The display panel in the display module may be a flexible display screen, such as a foldable screen or a rollable screen.

[0119] Optionally, the display device may be any product or component with a display function, such as an AMOLED display device, a liquid crystal display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, or a car display.

[0120] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be 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 will be 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 will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0121] In this application, the terms "first", "second", "third", "fourth", "fifth" and "sixth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise expressly limited.

[0122] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: The display module includes: a display panel, a support plate and a circuit board; The display panel includes a display portion, and a first bent portion and a first connecting portion extending from a first edge of the display portion and connected in sequence, the display portion having a display surface and a back surface opposite to each other, the first connecting portion being located on the back surface of the display portion, and the first bent portion including at least a portion of a gate driving circuit; The support plate is located on a side of the back surface facing away from the display surface, and the first connecting portion is connected to a side of the support plate facing away from the display portion; The circuit board is located on a side of the support plate away from the display portion, and a gap is formed between an end of the first connecting portion away from the first bending portion and the circuit board; The support plate includes a laminated substrate structure and a boss structure, wherein the boss structure is located on a side of the substrate structure facing away from the display portion, and at least a portion of an orthographic projection of the substrate structure on the display surface is located outside a corresponding orthographic projection of the boss structure on the display surface; The first connecting portion is connected to a side of the substrate structure away from the display portion, and the circuit board is connected to a side of the boss structure away from the display portion; The display module further includes a first filling structure, which is located between the first connecting portion and the circuit board, and is connected to the first connecting portion and the circuit board respectively.

2. The display module according to claim 1, wherein: The orthographic projection of the first connecting portion on the display surface and the orthographic projection of the circuit board on the display surface do not overlap with each other.

3. The display module according to claim 2, wherein: In a first direction, a distance between the first connecting portion and the circuit board is greater than or equal to 5 mm. The first direction is a direction parallel to the display surface and perpendicular to the first edge.

4. The display module according to claim 1, wherein: The orthographic projection of the first connecting portion on the display surface overlaps with the orthographic projection of the circuit board on the display surface.

5. The display module according to claim 4, wherein: In a second direction, a distance between the first connecting portion and the circuit board is greater than or equal to 3 mm, and the second direction is a direction perpendicular to the display surface.

6. The display module according to claim 1, wherein: The display module further includes a second filling structure, which is located between the first bending portion and the support plate, and is connected to the first bending portion and the support plate respectively.

7. The display module according to claim 1, wherein: The display module further includes a third filling structure, which covers a side of the first bending portion facing away from the support plate and is connected to the first bending portion.

8. The display module according to claim 1, wherein: In the second direction, the ratio of the thickness of the substrate structure to the first thickness ranges from 10% to 90%, the first thickness is the sum of the thickness of the substrate structure and the thickness of the boss structure, and the second direction is a direction perpendicular to the display surface.

9. The display module according to claim 1, wherein: The substrate structure includes a first plate surface and a second plate surface opposite to each other. The first plate surface is located on a side of the second plate surface facing away from the display portion. An edge of the first plate surface has a chamfered structure.

10. The display module according to claim 1, wherein: The first connecting portion has a second edge facing away from the bent portion; The display panel further includes a second bending portion and a second connecting portion extending from the second edge and connected in sequence, wherein the second connecting portion is located on a side of the first connecting portion away from the display portion.

11. The display module according to claim 10, wherein: The display module further includes a first support pad, which is located between the connecting portion and the second connecting portion, and is connected to the first connecting portion and the second connecting portion respectively.

12. A display device, characterized in that: The display device includes: a power supply component and a display module, the display module is the display module according to any one of claims 1 to 11, and the power supply component is used to supply power to the display module.

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