Display module and preparation method therefor, and display device

Abstract

A display module, comprising a display panel and a support structure which is located on the back side of the display panel; the support structure comprises a support layer, a first bonding layer and a light plug, wherein a first opening is provided in the support layer; a first end of the light plug is internally embedded in the first opening, a second end of the light plug is located on the side of the support layer away from the display panel, and an orthographic projection of the second end of the light plug on the support layer at least partially overlaps that of the first end on the support layer; the first bonding layer is located between the support layer and the second end of the light plug, and orthographic projections of the first bonding layer and the second end of the light plug on the support layer at least partially overlap the support layer; the first bonding layer is connected to the support layer and the second end of the light plug, respectively; there is a first gap between the support layer and the first end of the light plug; there is a second gap between the first bonding layer and the first end of the light plug; the first gap and the second gap are in communication; a second opening is provided in the first bonding layer; and the second opening is configured to allow the second gap to be in communication with an outer side of the first bonding layer.

Description

Display module, its manufacturing method, and display device Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display module, its manufacturing method, and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays have attracted widespread attention due to their advantages such as self-illumination, low power consumption, thinness, flexibility, vibrant colors, high contrast, and fast response speed. Summary of the Invention

[0003] In a first aspect, embodiments of this disclosure provide a display module, which includes a display panel.

[0004] A support structure is located on the back side of the display panel;

[0005] The support structure includes a support layer, a first adhesive layer, and a light plug;

[0006] The support layer has a first opening;

[0007] The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer at least partially overlaps with the orthographic projection of the first end on the support layer.

[0008] The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projections of the first adhesive layer and the second end of the light plug onto the support layer at least partially overlap with the support layer;

[0009] The first adhesive layer is connected to the support layer and the second end of the light plug, respectively;

[0010] There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous.

[0011] The first adhesive layer has a second opening; the second opening is configured to allow the second gap to communicate with the outside of the first adhesive layer.

[0012] In some embodiments, the support structure further includes a protective layer.

[0013] The protective layer is located on the side of the light plug opposite to the support layer, and there is a third gap between the protective layer and the light plug;

[0014] The third gap communicates with the second opening and the second gap;

[0015] The protective layer has a third opening, which communicates with the third gap and the outside of the protective layer.

[0016] In some embodiments, the third opening near the light plug corresponds to the position of the second opening.

[0017] In some embodiments, the orthographic projection of the first adhesive layer onto the support layer closes around the periphery of the first opening.

[0018] The second opening penetrates one sidewall of the first adhesive layer.

[0019] In some embodiments, the orthographic projection of the first adhesive layer onto the support layer surrounds the periphery of the first opening, and the first adhesive layer breaks at the location of the second opening.

[0020] In some embodiments, the number of the second openings is one or more.

[0021] In some embodiments, the third opening is a first groove formed on the side of the protective layer near the support layer.

[0022] The first groove extends from the third gap to the edge end face of the protective layer.

[0023] In some embodiments, the third opening is a through-hole formed in the protective layer.

[0024] The through hole extends from the third gap to the edge face of the protective layer.

[0025] In some embodiments, the number of the third openings is one or more.

[0026] In some embodiments, the distance between the end face of the first end near the display panel and the display panel is greater than the distance between the side surface of the support layer near the display panel and the display panel.

[0027] In some embodiments, the support layer has a bending region;

[0028] The display module further includes an ink layer located between the support layer and the protective layer, and the orthographic projection of the ink layer on the support layer at least partially overlaps with the bending area;

[0029] The portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is in contact with the ink layer, and the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap is in contact with the support layer;

[0030] The thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is less than the thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap.

[0031] In some embodiments, the sum of the thicknesses of the protective layer and the ink layer on the display panel is equal to the thickness of the protective layer in the portion where their orthogonal projections on the display panel do not overlap.

[0032] In some embodiments, the support layer further has a bending axis region, the bending axis region being located on opposite sides of the bending axis region along the bending direction;

[0033] The support layer has a plurality of second grooves on the side opposite to the display panel, and the plurality of second grooves are located in the bending area;

[0034] The length direction of the second groove is along the extension direction of the bent shaft area;

[0035] The adjacent second grooves are spaced apart from each other.

[0036] In some embodiments, the bending axis region of the support layer does not overlap with the ink layer;

[0037] The support layer has multiple fourth openings in the bending axis region, and the multiple fourth openings are evenly spaced.

[0038] In some embodiments, the bending area of ​​the support layer corresponds to the bending area of ​​the display panel and the two overlap.

[0039] The bending axis area of ​​the support layer corresponds to the bending axis area of ​​the display panel and the two overlap.

[0040] The bending axis region of the support layer and the orthographic projection of the bending region onto the display panel are at least partially located within the display area of ​​the display panel.

[0041] In some embodiments, the orthographic projection of the bending axis region of the support layer onto the display panel covers the centerline of the display panel in the length direction or the centerline in the width direction.

[0042] In some embodiments, a flexible circuit board is also included, located on the side of the support layer opposite to the display panel.

[0043] One end of the flexible circuit board is electrically connected to the display panel, and the other end is electrically connected to the peripheral circuit board.

[0044] The flexible circuit board includes a second adhesive layer, a substrate, and electrical components. The electrical components are located on the side of the substrate away from the support layer, and the second adhesive layer is located on the side of the substrate close to the support layer.

[0045] The second adhesive layer and the electrical component do not overlap in their orthographic projections on the substrate.

[0046] In some embodiments, a fifth opening is provided in the second adhesive layer.

[0047] The orthographic projection of the fifth opening on the substrate covers the orthographic projection of the electrical component on the substrate;

[0048] The fifth opening is spaced at a predetermined distance from the orthographic projection of the electrical component on the substrate.

[0049] In some embodiments, a protective structure is also included, located on the display side of the display panel;

[0050] The protective structure includes a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel;

[0051] The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel;

[0052] The protective structure has a bending axis area;

[0053] The protective structure further includes a fourth adhesive layer, which is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region.

[0054] In some embodiments, the protective structure further includes a fifth adhesive layer located between the first film layer and the display panel.

[0055] The orthographic projection of the fifth adhesive layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the fifth adhesive layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel.

[0056] The fourth adhesive layer covers the opposite two edge end faces of the first film layer corresponding to the bending axis region, and the fourth adhesive layer is respectively bonded to the third adhesive layer and the fifth adhesive layer.

[0057] In some embodiments, the orthographic projections of the fifth adhesive layer, the third adhesive layer, and the second film layer on the display panel cover the orthographic projection of the fourth adhesive layer on the display panel;

[0058] The fifth adhesive layer, the third adhesive layer, and the second film layer cover the display side surface of the display panel.

[0059] In some embodiments, the material of the fourth adhesive layer includes an insulating transparent adhesive material or a transparent adhesive material containing conductive components.

[0060] In some embodiments, the bending axis area of ​​the protective structure corresponds to the bending axis area of ​​the display panel and the two overlap.

[0061] The orthographic projection of the bending axis region of the protective structure onto the display panel is at least partially located within the display area of ​​the display panel.

[0062] In some embodiments, the orthographic projection of the bending axis region of the protective structure onto the display panel covers the centerline of the display panel in the length direction or the centerline in the width direction.

[0063] In some embodiments, the orthographic projection of the second end of the light plug onto the support layer covers the first opening and overlaps with the peripheral region of the support layer surrounding the first opening, and the orthographic projection of the first adhesive layer onto the support layer is located within the overlapping region of the orthographic projections of the second end of the light plug and the support layer.

[0064] Secondly, embodiments of this disclosure provide a display module, which includes a display panel.

[0065] A support structure is located on the back side of the display panel;

[0066] The support structure includes a support layer, a first adhesive layer, and a protective layer;

[0067] The support layer has a bending axis area and bending areas arranged sequentially on both sides of the bending axis area;

[0068] The display module further includes an ink layer located between the support layer and the protective layer, and the orthographic projection of the ink layer on the support layer at least partially overlaps with the bending area;

[0069] The portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is in contact with the ink layer, and the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap is in contact with the support layer;

[0070] The thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is less than the thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap.

[0071] In some embodiments, the support structure further includes a light plug, and a first opening is formed in the support layer;

[0072] The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer covers the first opening and overlaps with the peripheral area of ​​the support layer surrounding the first opening.

[0073] The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projection of the first adhesive layer on the support layer is located in the overlapping area of ​​the orthographic projections of the second end of the light plug and the support layer.

[0074] The first adhesive layer is connected to the support layer and the second end of the light plug, respectively;

[0075] There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous.

[0076] The first adhesive layer has a second opening; the second opening communicates with the second gap and the outside of the first adhesive layer;

[0077] The protective layer is located on the side of the light plug opposite to the support layer.

[0078] Thirdly, embodiments of this disclosure also provide a display module, which includes a display panel.

[0079] A support structure is located on the back side of the display panel;

[0080] The display module also includes a protective structure located on the display side of the display panel;

[0081] The protective structure includes a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel;

[0082] The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel;

[0083] The protective structure has a bending axis area;

[0084] The protective structure further includes a fourth adhesive layer, which is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region.

[0085] Fourthly, embodiments of this disclosure also provide a display module, which includes a display panel.

[0086] A support structure is located on the back side of the display panel;

[0087] The support structure includes a support layer, a first adhesive layer, and a light plug;

[0088] The display module also includes a flexible circuit board located on the side of the support layer opposite to the display panel.

[0089] One end of the flexible circuit board is electrically connected to the display panel, and the other end is electrically connected to the peripheral circuit board.

[0090] The flexible circuit board includes a second adhesive layer, a substrate, and electrical components. The electrical components are located on the side of the substrate away from the support layer, and the second adhesive layer is located on the side of the substrate close to the support layer.

[0091] The second adhesive layer and the electrical component do not overlap in their orthographic projections on the substrate.

[0092] Fifthly, embodiments of this disclosure provide a display device, which includes the aforementioned display module.

[0093] In some embodiments, a mid-frame is also included, located on the side of the ink layer in the display module opposite to the display panel.

[0094] The area of ​​the middle frame that overlaps with the ink layer is bonded to the ink layer;

[0095] At least a portion of the middle frame that does not overlap with the ink layer is bonded to the support layer in the display module.

[0096] In some embodiments, the fourth adhesive layer in the display module contacts and connects with the mid-frame.

[0097] Sixthly, embodiments of this disclosure provide a method for manufacturing a display module, comprising: manufacturing a display panel;

[0098] Fabrication of support structure;

[0099] The support structure is attached to the back side of the display panel;

[0100] Preparation of protective structures;

[0101] The protective structure is attached to the display side of the display panel;

[0102] The fabrication of the support structure includes fabricating a support layer, a first adhesive layer, and an optical plug.

[0103] A first opening is formed in the support layer;

[0104] The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer covers the first opening and overlaps with the peripheral area of ​​the support layer surrounding the first opening.

[0105] The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projection of the first adhesive layer on the support layer is located in the overlapping area of ​​the orthographic projections of the second end of the light plug and the support layer.

[0106] The first adhesive layer is connected to the support layer and the second end of the light plug, respectively;

[0107] There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous.

[0108] The first adhesive layer has a second opening; the second opening communicates with the second gap and the outside of the first adhesive layer;

[0109] The preparation of the protective structure includes preparing a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel;

[0110] The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel;

[0111] The protective structure has a bending axis area;

[0112] The preparation of the protective structure also includes preparing a fourth adhesive layer using inkjet printing or roll-on application methods.

[0113] The fourth adhesive layer is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region. Attached Figure Description

[0114] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0115] Figure 1a is a top view of a display module viewed from the display side in the related art.

[0116] Figure 1b is a structural cross-sectional view along the AA' section line in Figure 1a.

[0117] Figure 1c is a top view of a display module viewed from the rear side in the related art.

[0118] Figure 1d is a structural cross-sectional view along the BB' section line in Figure 1c.

[0119] Figure 1e is another top view of the display module viewed from the rear side in the related art.

[0120] Figure 1f is a structural cross-sectional view along the CC' section line in Figure 1e.

[0121] Figure 1g is a top view of the flexible circuit board in the display module of the related technology, on the side facing away from the display panel.

[0122] Figure 1h is a top view of the flexible circuit board in the display module of the related technology, near the display panel.

[0123] Figure 2a is a top view of the back side of a display module according to an embodiment of this disclosure.

[0124] Figure 2b is a top view of the position of the light plug in Figure 2a.

[0125] Figure 2c is a structural cross-sectional view along the DD' section line in Figure 2b.

[0126] Figure 2d is a top view of the back side of another display module in an embodiment of this disclosure.

[0127] Figure 2e is a top view of the location of the light plug in Figure 2d.

[0128] Figure 2f is a structural cross-sectional view along the EE' section line in Figure 2e.

[0129] Figure 3a is a top view of the back side of another display module in an embodiment of this disclosure.

[0130] Figure 3b is a cross-sectional view of the structure along the FF' section line in Figure 3a.

[0131] Figure 4a is a top view of the back side of another display module in an embodiment of this disclosure.

[0132] Figure 4b is a top view of the flexible circuit board in the display module of Figure 4a, on the side closest to the display panel.

[0133] Figure 4c is a cross-sectional view of the structure along the GG' section line in Figure 4a.

[0134] Figure 5a is a top view of the display side of a display module in an embodiment of this disclosure.

[0135] Figure 5b is a structural cross-sectional view along the HH' section line in Figure 5a. Detailed Implementation

[0136] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the following describes in further detail a display module, its manufacturing method, and a display device provided in the embodiments of this disclosure, in conjunction with the accompanying drawings and specific implementation methods.

[0137] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0138] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on manufacturing processes. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0139] As electronic products iterate, the market demands higher and higher standards for display devices. Foldable devices (such as OLED displays) are developing towards thinner and lighter designs with smaller bending radii. However, the pursuit of advanced technology means that the appearance of the product cannot be compared with conventional designs, and the reliability of the product is also inferior to conventional design solutions. For example, the bending performance of the product cannot compete with conventional design solutions.

[0140] In related technologies, foldable display modules suffer from many problems due to stacking and thinning, such as the bending bubble problem of foldable screens. Referring to Figures 1a and 1b, Figure 1a is a top view of a display module in the related technology from the display side; Figure 1b is a structural cross-sectional view along the AA' section line in Figure 1a. The foldable display module includes a flexible display panel 1 and a protective structure covering the display side of the display panel 1. The protective structure includes a first transparent film layer 56 and a second transparent film layer 57. The first transparent film layer 56 and the second transparent film layer 57 are bonded together by optically transparent adhesive (OCA) 50. The first transparent film layer 56 is bonded to the display panel 1 by optically transparent adhesive (OCA) 50. The first transparent film layer 56 only covers the display area 100 of the display panel 1, and the second transparent film layer 57 covers the entire display side surface of the display panel 1. The bending axis area 102 of the folding display module covers the horizontal centerline Q of the display area 100. As the overall thickness of the folding display module is greatly reduced, the bending performance of the edge of its bending axis area 102 decreases. Specifically, as the number of bends increases, air bubbles will gradually spread from the edge of the first transparent film layer 56 of the bending axis area 102 through the contact interface between the first transparent film layer 56 and the upper and lower optical transparent adhesives 50 to the display area 100, resulting in air bubble defects in the folding display module.

[0141] For example, there is the issue of ink printing on the display side of the display module. Referring to Figures 1c and 1d, Figure 1c is a top view of a display module viewed from the back side in the related art; Figure 1d is a structural cross-sectional view along the BB' section line in Figure 1c. The folding display module also includes a support structure disposed on the back side of the flexible display panel 1. The support structure includes a support layer 20. In order to improve the bending performance of the support layer 20 in the bending areas 101 located on both sides of the bending axis area 102, a blind groove (i.e., the depth of the groove is less than the thickness of the support layer) R is provided on the side of the support layer 20 facing away from the display panel 1 in the bending area 101. When the folding display module is assembled as a whole, a middle frame (not shown in the figure) is provided on its back side to provide support and protection for the entire display module. The middle frame and the blind groove R area of ​​the support layer 20 are directly bonded together with adhesive. However, the bond between the middle frame and the blind groove R area of ​​the support layer 20 is not very strong. To improve the bond strength, ink 6 is applied to the blind groove R area on the side of the support layer 20 away from the display panel 1. The ink 6 is bonded to the middle frame more firmly with adhesive. The thickness of the ink 6 is about 5μm. After the ink 6 is introduced, the surface height of the ink 6 in the gap area between the blind grooves R of the support layer 20 in the bending area 101 is higher than the surface height of other areas of the support layer 20. A release film 7 is applied to the side of the ink 6 away from the display panel 1. During the process of pressing the support layer 20 onto the back side of the display panel 1 using rollers, the areas on the support layer 20 with ink 6 will be subjected to greater pressure, resulting in poor printing at the corresponding ink area on the display side of the display module.

[0142] For example, there is the problem of air entrapment at the position of the light plug; referring to Figures 1e and 1f, Figure 1e is another top view of the display module viewed from the back side in the related art; Figure 1f is a structural cross-sectional view along the CC' section line in Figure 1e; a light plug 22 is provided in the support structure of the display module, the light plug 22 penetrates through the support layer 20, and the light plug 22 and the support layer 20 are fixedly connected by the light plug adhesive 8, the release film 7 is located on the side of the light plug 22 away from the display panel 1, and the release film 7 covers the light plug 22 and the support layer 20; the light plug 22 plays a supporting and light-transmitting role in the display module; the end of the light plug 22 away from the display panel 1 faces the light sensor (not shown in the figure) set on the frame of the whole machine, and the end of the light plug 22 close to the display panel 1 faces the back side of the display panel 1. The ambient light and the display light of the display panel 1 can be transmitted to the light sensor through the light plug 22, thereby realizing the adjustment of the display brightness of the display module according to the ambient light. In related technologies, due to the thickness tolerance of the optical plug 22 and the pressure exerted during the bonding process of the entire support structure to the back of the display panel 1, the optical plug 22 is relatively far from the back of the display panel 1 relative to the support layer 20. This results in a gap between the optical plug 22 and the support layer 20 in a direction perpendicular to the back of the display panel 1. For example, there is a gap T1 between the end of the optical plug 22 closest to the display panel 1 and the support layer 20, and a gap T2 between the end of the optical plug 22 furthest from the display panel 1 and the support layer 20. The adhesive backing 8 forms a closed-loop design around the optical plug 22, and there is a gap T3 between the adhesive backing 8 and the optical plug 22. The release film 7 covers the optical plug 22 to form a closed design, and there is also a gap T4 between the release film 7 and the optical plug 22. During the bonding process of the entire support structure to the back of the display panel 1, the bonding pressure during the rapid bonding process will cause "air trapping" (i.e., gas trapped in the gap) at the above-mentioned gap positions, resulting in bulging marks at the optical plug 22 position of the display module.

[0143] For example, there is the problem of extrusion molding at the location of the flexible printed circuit board (FPC); due to the overall thinning of the display module, the display module is prone to deformation during the overall pressing process. The display module also includes a flexible printed circuit board, which is bent to the back side of the display panel after being bonded and electrically connected to the display panel, and is bonded and electrically connected to the peripheral circuit board located on the back side of the display panel. Referring to Figures 1g and 1h, Figure 1g is a top view of the flexible printed circuit board away from the display panel in the related technology display module; Figure 1h is a top view of the flexible printed circuit board near the display panel in the related technology display module; the flexible printed circuit board 4 includes a flexible substrate 40 and an electrical component 42 disposed on one side of the substrate 40; during the process of bending the flexible printed circuit board 4 to the back side of the display panel 1, the bending fixture clamps the flexible printed circuit board 4 and bends it to the back side of the display panel 1, and the substrate 40 of the flexible printed circuit board 4 and the support layer 20 are bonded together by adhesive 9; to avoid the bending process When the electrical component 42 is bumped or damaged, the bending fixture avoids the position of the electrical component 42. Therefore, after the substrate 40 of the flexible circuit board 4 is pasted with the support layer 20, the adhesive 9 at the corresponding position of the electrical component 42 and the support layer 20 are in a "partially sticky" state. When the display side surface of the display module is pressed during normal use, the adhesive 9 at the corresponding position of the electrical component 42 will be substantially stuck to the support layer 20, causing the display module to be dented at the position of the electrical component 42, and then a "pit" extrusion mold mark will appear on the display side of the display module.

[0144] To address the aforementioned problems in the related technologies, in a first aspect, embodiments of this disclosure provide a display module. Referring to Figures 2a-2f, Figure 2a is a top view of the back side of a display module according to an embodiment of this disclosure; Figure 2b is a top view of the position of the light plug in Figure 2a; Figure 2c is a structural cross-sectional view along the DD' section line in Figure 2b; Figure 2d is a top view of the back side of another display module according to an embodiment of this disclosure; Figure 2e is a top view of the position of the light plug in Figure 2d.

[0145] Figure 2f is a structural cross-sectional view along the EE' section line in Figure 2e; wherein, the display module includes a display panel 1 and a support structure 2 located on the back side of the display panel 1; the support structure 2 includes a support layer 20, a first adhesive layer 21, and a light plug 22, wherein the support layer 20 has a first opening 201; the first end A of the light plug 22 is embedded in the first opening 201, and the second end B of the light plug 22 is located on the side of the support layer 20 away from the display panel 1, and the orthographic projection of the second end B of the light plug 22 on the support layer 20 at least partially overlaps with the orthographic projection of the first end A on the support layer 20; the first adhesive layer 21 is located on the back side of the display panel 1; the support structure 2 includes a support layer 20, a first adhesive layer 21, and a light plug 2 ... Between the support layer 20 and the second end B of the light plug 22, the orthographic projection of the first adhesive layer 21 and the second end B of the light plug 22 on the support layer 20 at least partially overlaps with the support layer 20; the first adhesive layer 21 is connected to the support layer 20 and the second end B of the light plug 22 respectively; there is a first gap C between the support layer 20 and the first end A of the light plug 22; there is a second gap D between the first adhesive layer 21 and the first end A of the light plug 22; the first gap C and the second gap D are connected; a second opening 210 is provided in the first adhesive layer 21; the second opening 210 is connected to the second gap D and the outside of the first adhesive layer 21.

[0146] In this embodiment, the second opening 210 is configured to allow the second gap D to communicate with the outer side of the first adhesive layer 21. The orthographic projection of the first adhesive layer 21 onto the support layer 20 surrounds the light plug 22. At least one second opening 210 is provided in the first adhesive layer 21, such that the second gap D, the second opening 210, and the exhaust channel on the outer side of the first adhesive layer 21 are formed. The exhaust channel is not limited to a straight line and can be of any shape.

[0147] The light plug 22 is made of a light-transmitting material. The light plug 22 allows ambient light and display light from the display side of the display panel 1 to be transmitted from its first end A to its second end B. The light sensor is located at the second end B of the light plug 22. The light sensor receives ambient light and display light, thereby controlling the display module to adjust its display brightness according to the ambient light.

[0148] In this embodiment, by opening a second opening 210 in the first adhesive layer 21, the second gap D and the first adhesive layer 21 can be connected, thereby forming a gas flow channel between the first gap C, the second gap D and the outside. This improves or avoids the problem of "air trapping" at the positions of the first gap C and the second gap D during the process of applying the support structure 2 to the back side of the display panel 1 due to the application pressure of rapid application, and ultimately improves or avoids the appearance of bulges and mold marks on the display module at the corresponding light plug 22.

[0149] In some embodiments, the orthographic projection of the second end B of the light plug 22 onto the support layer 20 covers the first opening 201 and overlaps with the peripheral region of the support layer 20 surrounding the first opening 201; the orthographic projection of the first adhesive layer 21 onto the support layer 20 is located within the overlapping region of the orthographic projections of the second end B of the light plug 22 and the support layer 20.

[0150] In some embodiments, the cross-sectional shape of the light plug 22 perpendicular to the display panel 1 can be T-shaped, I-shaped, or other shapes.

[0151] In some embodiments, the support structure 2 further includes a protective layer 23, which is located on the side of the light plug 22 away from the support layer 20, and a third gap E is formed between the protective layer 23 and the light plug 22; the third gap E communicates with the second opening 210 and the second gap D; a third opening 230 is formed in the protective layer 23, which communicates with the third gap E and the outside of the protective layer 23.

[0152] The third opening 230 in the protective layer 23 allows the third gap E to be connected to the outside through the third opening 230, thereby forming a gas flow channel between the first gap C, the second gap D, the third gap E and the outside. This improves or avoids the problem of "air trapping" caused by the fast application pressure at the positions of the first gap C, the second gap D and the third gap E during the process of applying the support structure 2 to the back of the display panel 1, and ultimately improves or avoids the appearance of bulges or mold marks on the display module at the corresponding positions of the light plug 22.

[0153] In some embodiments, the protective layer 23 may include a plurality of sublayers stacked sequentially. The third gap E may be an opening formed in a sublayer near the light plug 22.

[0154] In some embodiments, referring to Figures 2a, 2b, 2c, 2d, 2e, and 2f, the end opening F of the third opening 230 near the light plug 22 corresponds to the position of the second opening 210. That is, the end opening F of the third opening 230 near the light plug 22 is directly connected to the second opening 210. This arrangement allows the first gap C, the second gap D, the third gap E to form a more direct and shorter gas flow channel with the outside, thereby further improving or avoiding the "air trapping" problem at the positions of the first gap C, the second gap D, and the third gap E during the process of attaching the support structure 2 to the back side of the display panel 1 due to the rapid attachment pressure.

[0155] In some embodiments, referring to Figures 2d, 2e, and 2f, the orthographic projection of the first adhesive layer 21 onto the support layer 20 closes around the periphery of the first opening 201, and the second opening 210 penetrates one sidewall of the first adhesive layer 21. This achieves a firm bond between the first adhesive layer 21 and the light plug 22 and the support layer 20, preventing the light plug 22 from shifting during transport or shaking of the display module, thus ensuring the accuracy of the light sensor's detection of ambient light. Furthermore, it allows for a more direct and shorter gas flow channel between the first gap C, the second gap D, the third gap E, and the outside environment.

[0156] In some embodiments, referring to Figures 2a, 2b, and 2c, the orthographic projection of the first adhesive layer 21 onto the support layer 20 surrounds the periphery of the first opening 201, and the first adhesive layer 21 is broken at the location of the second opening 210. That is, in this embodiment, the second opening 210 is formed by breaking the first adhesive layer 21. This also achieves a firm adhesive connection between the first adhesive layer 21 and the light plug 22 and the support layer 20, while allowing the first gap C, the second gap D, the third gap E, and the outside to form a more direct and shorter gas flow channel.

[0157] In some embodiments, the number of second openings 210 is one or more.

[0158] In some embodiments, the first adhesive layer 21 is an optically clear adhesive, such as OCA (Optically Clear Adhesive) or OCR (Optical Clear Resin). The support layer 20 is made of at least one of titanium alloy, stainless steel (SUS), graphene, copper, and fibrous materials (e.g., carbon fiber composites, metal fiber composites, etc.).

[0159] In some embodiments, referring to Figures 2a, 2b and 2c, the third opening 230 is a first groove G formed on the side of the protective layer 23 near the support layer 20, and the first groove G extends from the third gap E to the edge end face of the protective layer 23.

[0160] In some embodiments, referring to Figures 2d, 2e and 2f, the third opening 230 is a through hole H formed in the protective layer 23, and the through hole H extends from the third gap E to the edge end face of the protective layer 23.

[0161] In some embodiments, the number of third openings 230 is one or more.

[0162] In some embodiments, the distance s1 between the end face of the first end A near the display panel 1 and the display panel 1 is greater than the distance s2 between the side surface of the support layer 20 near the display panel 1 and the display panel 1. This configuration prevents the light plug 22 from being damaged by the application pressure during the process of attaching the support structure 2 to the back side of the display panel 1.

[0163] In some embodiments, the orthographic projection of the light plug 22 onto the display panel 1 is located in the display area 100 of the display panel 1.

[0164] In some embodiments, referring to Figures 3a and 3b, Figure 3a is a top view of the back side of another display module in an embodiment of the present disclosure; Figure 3b is a structural cross-sectional view along the FF' section line in Figure 3a; the support layer 20 has a bending region 101; the display module further includes an ink layer 3 located between the support layer 20 and the protective layer 23, and the orthographic projection of the ink layer 3 on the support layer 20 at least partially overlaps with the bending region 101; the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is in contact with the ink layer 3, and the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap is in contact with the support layer 20; the thickness h1 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is less than the thickness h2 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap.

[0165] In this embodiment, the orthogonal projection of the ink layer 3 onto the support layer 20 covers the bending area 101.

[0166] The ink layer 3 is bonded to the middle frame, which is subsequently disposed on the side of the ink layer 3 facing away from the display panel 1, via adhesive. A portion of the middle frame corresponding to the bending area 101 bends along with the bending area 101. During the bending process of the bending area 101, the middle frame provides auxiliary bending and support to the bending area 101 of the support layer 20. By placing the ink layer 3 in the bending area 101 of the support layer 20 facing away from the display panel 1, the bonding strength between the bending area 101 of the support layer 20 and the middle frame is enhanced. This prevents the middle frame from detaching from the support layer 20 during the bending process of the bending area 101, thus ensuring the auxiliary bending and support of the middle frame for the bending area 101 of the support layer 20.

[0167] By making the thickness h1 of the overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1 less than the thickness h2 of the non-overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1, the surface height difference between the ink layer 3 setting area and the ink layer 3 non-setting area on the side of the support layer 20 away from the display panel 1 can be reduced or eliminated. This improves or avoids the problem of greater pressure on the ink layer 3 setting area during the process of the support layer 20 being pressed and attached to the back side of the display panel 1 by rollers, thereby improving or avoiding the occurrence of poor printing on the display side of the display module at the corresponding ink layer 3 position.

[0168] In some embodiments, in the overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1, the sum of the thicknesses of the protective layer 23 and the ink layer 3 is equal to the thickness of the protective layer in the non-overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1. That is, the protective layer 23 extends in the direction of the ink layer 3 to fill the previous step difference, so that the protective layer 23 completely covers the side of the ink layer 3.

[0169] This configuration completely eliminates the surface height difference between the area where the ink layer 3 is set and the area where the ink layer 3 is not set on the side of the support layer 20 facing away from the display panel 1. This completely avoids the problem of greater pressure on the area where the ink layer 3 is set during the process of the support layer 20 being pressed and attached to the back side of the display panel 1 by rollers, thereby preventing printing defects on the display side of the display module at the corresponding position of the ink layer 3.

[0170] In some embodiments, referring to FIG3a, the support layer 20 further has a bending axis region 102, the bending region 101 being located on opposite sides of the bending axis region 102 along the bending direction; a plurality of second grooves 202 are provided on the side of the support layer 20 away from the display panel 1, the plurality of second grooves 202 being located in the bending region 101; the length direction of the second grooves 202 is along the extension direction of the bending axis region 102; adjacent second grooves 202 are spaced apart from each other.

[0171] In particular, multiple second grooves 202 are formed in the bending area 101 of the support layer 20, which can improve the bending performance of the bending area 101 of the support layer 20.

[0172] In some embodiments, referring to FIG3a, the bending axis region 102 of the support layer 20 does not overlap with the ink layer 3; a plurality of fourth openings 203 are provided in the bending axis region 102 of the support layer 20, and the plurality of fourth openings 203 are evenly spaced. The provision of the fourth openings 203 in the bending axis region 102 of the support layer 20 can enhance the bending performance of the bending axis region 102, thereby making the bending axis region 102 less prone to damage during frequent bending.

[0173] In some embodiments, the shape of the fourth opening 203 can be any shape such as a circle, an ellipse, or a rectangle.

[0174] In some embodiments, a plurality of fourth openings 203 are provided in the bending axis region 102 of the support layer 20. The plurality of fourth openings 203 are distributed at uneven intervals. For example, the spacing between the fourth openings 203 can gradually increase or decrease and then increase from the bending axis region 101 to the direction away from the bending axis region 102.

[0175] In some embodiments, the bending area 101 of the support layer 20 corresponds to the bending area of ​​the display panel 1 and the two overlap; the bending axis area 102 of the support layer 20 corresponds to the bending axis area of ​​the display panel 1 and the two overlap; the orthographic projection of the bending axis area 102 and the bending area 101 of the support layer 20 on the display panel 1 is at least partially located in the display area 100 of the display panel 1.

[0176] In some embodiments, referring to FIG3a, the orthographic projection of the bending axis region 102 of the support layer 20 onto the display panel 1 covers the center line P in the length direction or the center line in the width direction of the display panel 1. It should be noted that allowing a certain deviation or error within the allowable range of the module process to cover the orthographic projection of the bending axis region 102 of the support layer 20 onto the display panel 1 covering the center line P in the length direction or the center line in the width direction of the display panel 1.

[0177] In some embodiments, referring to Figures 4a, 4b, and 4c, Figure 4a is a top view of the back side of another display module in an embodiment of the present disclosure; Figure 4b is a top view of the flexible circuit board in the display module of Figure 4a on the side near the display panel; Figure 4c is a structural cross-sectional view along the GG' section line in Figure 4a; the display module further includes a flexible circuit board 4, located on the side of the support layer 20 away from the display panel 1, one end of the flexible circuit board 4 is bonded and electrically connected to the display panel 1, and the other end is bonded and electrically connected to a peripheral circuit board (not shown in the figure); the flexible circuit board 4 includes a second adhesive layer 41, a substrate 40, and an electrical component 42, the electrical component 42 is located on the side of the substrate 40 away from the support layer 20, and the second adhesive layer 41 is located on the side of the substrate 40 near the support layer 20; the orthographic projections of the second adhesive layer 41 and the electrical component 42 on the substrate 40 do not overlap.

[0178] By ensuring that the orthographic projections of the second adhesive layer 41 and the electrical component 42 on the substrate 40 do not overlap, after the flexible circuit board 4 is bent to the back side of the display panel 1, since the second adhesive layer 41 is not provided between the substrate 40 at the location of the electrical component 42 and the support layer 20, there is no "seemingly adhesive but not truly adhesive" state between the substrate 40 at the location of the electrical component 42 and the support layer 20. Therefore, when the display side surface of the display module is pressed during normal use, the display module will not be dented at the location of the corresponding electrical component 42, thereby avoiding the appearance of "dented" pressure marks on the display side of the display module.

[0179] In some embodiments, a fifth opening 410 is provided in the second adhesive layer 41, and the orthographic projection of the fifth opening 410 on the substrate 40 covers the orthographic projection of the electrical component 42 on the substrate 40; a distance x is spaced between the fifth opening 410 and the orthographic projection of the electrical component 42 on the substrate 40.

[0180] The set distance x is consistent with the avoidance distance of the bending fixture at the position of the electrical component 42. On the one hand, it can avoid the bending fixture from bumping and damaging the electrical component 42 during the process of bending the flexible circuit board 4 to the back of the display panel 1. On the other hand, the bending fixture can make the second adhesive layer 41 firmly bond the flexible circuit board 4 and the support layer 20 together.

[0181] In some embodiments, the second adhesive layer 41 is an adhesive.

[0182] In some embodiments, referring to Figures 5a and 5b, Figure 5a is a top view of the display side of a display module according to an embodiment of the present disclosure; Figure 5b is a structural cross-sectional view along the HH' section line in Figure 5a; the display module further includes a protective structure 5 located on the display side of the display panel 1; the protective structure 5 includes a first film layer 51, a third adhesive layer 52, and a second film layer 53, the first film layer 51, the third adhesive layer 52, and the second film layer 53 being stacked sequentially away from the display panel 1; the orthographic projection of the first film layer 51 on the display panel 1 covers the display panel 1. The orthographic projection of the third adhesive layer 52 and the second film layer 53 on the display panel 1 in the display area 100 covers the orthographic projection of the first film layer 51 on the display panel 1, and the orthographic projection area of ​​the third adhesive layer 52 and the second film layer 53 on the display panel 1 is larger than the orthographic projection area of ​​the first film layer 51 on the display panel 1; the protective structure 5 has a bending axis area 102; the protective structure 5 also includes a fourth adhesive layer 54, which is located in the same layer as the first film layer 51, and the fourth adhesive layer 54 is located at the opposite two sides of the corresponding bending axis area 102 of the first film layer 51.

[0183] In this embodiment, by providing a fourth adhesive layer 54 of the same layer as the first film layer 51 at the opposite sides of the corresponding bending axis region 102 of the first film layer 51, at least partially blocking the air bubbles generated by the opposite sides of the first film layer 51 located in the bending axis region 102 during frequent bending from the contact interface between the first film layer 51 and the third adhesive layer 52 and the display panel 1 to the display area of ​​the display panel 1, thereby improving or avoiding air bubble defects in the display module.

[0184] In some embodiments, the protective structure 5 further includes a fifth adhesive layer 55 located between the first film layer 51 and the display panel 1. The orthographic projection of the fifth adhesive layer 55 on the display panel 1 covers the orthographic projection of the first film layer 51 on the display panel 1, and the orthographic projection area of ​​the fifth adhesive layer 55 on the display panel 1 is larger than the orthographic projection area of ​​the first film layer 51 on the display panel 1. The fourth adhesive layer 54 covers the opposite side edge end faces of the corresponding bending axis region 102 of the first film layer 51, and the fourth adhesive layer 54 is respectively bonded to the third adhesive layer 52 and the fifth adhesive layer 55.

[0185] The fifth adhesive layer 55 enables the display panel 1 to be bonded to the first film layer 51.

[0186] In this embodiment, by covering the opposite side edge end faces of the corresponding bending axis region 102 of the first film layer 51 with the fourth adhesive layer 54, and by bonding the fourth adhesive layer 54 with the third adhesive layer 52 and the fifth adhesive layer 55 respectively, there can be no gap between the opposite side edges of the first film layer 51 located in the bending axis region 102 and the fourth adhesive layer 54, the third adhesive layer 52 and the fifth adhesive layer 55. This can completely prevent the generation of air bubbles on the opposite side edges of the first film layer 51 located in the bending axis region 102 during frequent bending, and thus completely prevent the display module from having air bubble defects.

[0187] In some embodiments, the orthographic projections of the fifth adhesive layer 55, the third adhesive layer 52, and the second film layer 53 on the display panel 1 cover the orthographic projection of the fourth adhesive layer 54 on the display panel 1; the fifth adhesive layer 55, the third adhesive layer 52, and the second film layer 53 cover the display side surface of the display panel 1.

[0188] In some embodiments, the material of the fourth adhesive layer 54 includes an insulating transparent adhesive material or a transparent adhesive material containing conductive components.

[0189] In some embodiments, the third adhesive layer 52, the fourth adhesive layer 54, and the fifth adhesive layer 55 are all made of transparent optical adhesive material.

[0190] In some embodiments, the third adhesive layer 52 and the fifth adhesive layer 55 are both made of transparent optical adhesive material. The fourth adhesive layer 54 is made of transparent optical adhesive material containing conductive components.

[0191] In some embodiments, the bending axis region 102 of the protective structure 5 corresponds to the bending axis region of the display panel 1 and the two overlap; the orthographic projection of the bending axis region 102 of the protective structure 5 on the display panel 1 is at least partially located in the display area 100 of the display panel 1.

[0192] In some embodiments, the orthographic projection of the bending axis area 102 of the protective structure 5 onto the display panel 1 covers the centerline P in the length direction or the centerline in the width direction of the display panel 1. It should be noted that allowing a certain deviation or error within the allowable range of the module process to cover the orthographic projection of the bending axis area 102 of the protective structure 5 onto the display panel 1 is permissible.

[0193] In some embodiments, the first film layer 51 is made of ultrathin flexible glass. The second film layer 53 is made of polyimide or polyethylene terephthalate.

[0194] The display module provided in this embodiment, by opening a second opening 210 in the first adhesive layer 21, allows the second gap D and the first adhesive layer 21 to be connected, thereby enabling the first gap C, the second gap D and the outside to form a gas flow channel. This improves or avoids the problem of "air trapping" at the positions of the first gap C and the second gap D during the process of applying the support structure 2 to the back side of the display panel 1 due to the application pressure of rapid application, and ultimately improves or avoids the appearance of bulge marks on the display module at the corresponding light plug 22.

[0195] This disclosure also provides a display module, referring to Figures 2a-2f, 3a, and 3b, which includes a display panel 1 and a support structure 2 located on the back side of the display panel 1. The support structure 2 includes a support layer 20, a first adhesive layer 21, and a protective layer 23. The support layer 20 has a bending axis region 102 and bending regions 101 sequentially disposed on both sides of the bending axis region 102. The display module also includes an ink layer 3 located between the support layer 20 and the protective layer 23, and the orthographic projection of the ink layer 3 on the support layer 20 at least partially overlaps with the bending region 101. The portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is in contact with the ink layer 3, and the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap is in contact with the support layer 20. The thickness h1 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is less than the thickness h2 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap.

[0196] The display module provided in this embodiment reduces or eliminates the surface height difference between the area where the protective layer 23 and the ink layer 3 overlap on the display panel 1 and the area where the ink layer 3 is not installed on the side of the support layer 20 facing away from the display panel 1. This reduces or eliminates the problem of greater pressure on the area where the ink layer 3 is installed during the process of the support layer 20 being pressed and attached to the back side of the display panel 1 by rollers. This improves or avoids the problem of poor printing on the display side of the display module at the position corresponding to the ink layer 3.

[0197] In some embodiments, the support structure 2 further includes a light plug 22, and a first opening 201 is formed in the support layer 20; the first end A of the light plug 22 is embedded in the first opening 201, and the second end B of the light plug 22 is located on the side of the support layer 20 away from the display panel 1, and the orthographic projection of the second end B of the light plug 22 on the support layer 20 covers the first opening 201 and overlaps with the peripheral area of ​​the support layer 20 surrounding the first opening 201; a first adhesive layer 21 is located between the support layer 20 and the second end B of the light plug 22, and the orthographic projection of the first adhesive layer 21 on the support layer 20... Located in the overlapping area of ​​the second end B of the light plug 22 and the orthographic projection of the support layer 20; the first adhesive layer 21 is connected to the support layer 20 and the second end B of the light plug 22 respectively; there is a first gap C between the support layer 20 and the first end A of the light plug 22; there is a second gap D between the first adhesive layer 21 and the first end A of the light plug 22; the first gap C and the second gap D are connected; a second opening 210 is provided in the first adhesive layer 21; the second opening 210 is connected to the second gap D and the outside of the first adhesive layer 21; the protective layer 23 is located on the side of the light plug 22 away from the support layer 20.

[0198] By creating a second opening 210 in the first adhesive layer 21, the second gap D and the first adhesive layer 21 can be connected, thereby forming a gas flow channel between the first gap C, the second gap D and the outside. This improves or avoids the problem of "air trapping" at the positions of the first gap C and the second gap D during the process of applying the support structure 2 to the back side of the display panel 1 due to the application pressure of rapid application, and ultimately improves or avoids the appearance of bulge marks on the display module at the corresponding light plug 22 position.

[0199] In some embodiments, in the overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1, the sum of the thicknesses of the protective layer 23 and the ink layer 3 is equal to the thickness of the protective layer in the non-overlapping portion of the orthographic projections of the protective layer 23 and the ink layer 3 on the display panel 1. That is, the protective layer 23 extends in the direction of the ink layer 3 to fill the previous step difference, so that the protective layer 23 completely covers the side of the ink layer 3.

[0200] This configuration completely eliminates the surface height difference between the area where the ink layer 3 is set and the area where the ink layer 3 is not set on the side of the support layer 20 facing away from the display panel 1. This completely avoids the problem of greater pressure on the area where the ink layer 3 is set during the process of the support layer 20 being pressed and attached to the back side of the display panel 1 by rollers, thereby preventing printing defects on the display side of the display module at the corresponding position of the ink layer 3.

[0201] In some embodiments, referring to FIG3a, a plurality of second grooves 202 are provided on the side of the support layer 20 away from the display panel 1, and the plurality of second grooves 202 are located in the bending region 101; the length direction of the second grooves 202 is along the extension direction of the bending axis region 102; adjacent second grooves 202 are spaced apart from each other.

[0202] In particular, multiple second grooves 202 are formed in the bending area 101 of the support layer 20, which can improve the bending performance of the bending area 101 of the support layer 20.

[0203] In some embodiments, referring to FIG3a, the bending axis region 102 of the support layer 20 does not overlap with the ink layer 3; a plurality of fourth openings 203 are provided in the bending axis region 102 of the support layer 20, and the plurality of fourth openings 203 are evenly spaced. The provision of the fourth openings 203 in the bending axis region 102 of the support layer 20 can enhance the bending performance of the bending axis region 102, thereby making the bending axis region 102 less prone to damage during frequent bending.

[0204] In some embodiments, the shape of the fourth opening 203 can be any shape such as a circle, an ellipse, or a rectangle.

[0205] In some embodiments, a plurality of fourth openings 203 are provided in the bending axis region 102 of the support layer 20. The plurality of fourth openings 203 are distributed at uneven intervals. For example, the spacing between the fourth openings 203 can gradually increase or decrease and then increase from the bending axis region 101 to the direction away from the bending axis region 102.

[0206] In some embodiments, the bending area 101 of the support layer 20 corresponds to the bending area of ​​the display panel 1 and the two overlap; the bending axis area 102 of the support layer 20 corresponds to the bending axis area of ​​the display panel 1 and the two overlap; the orthographic projection of the bending axis area 102 and the bending area 101 of the support layer 20 on the display panel 1 is at least partially located in the display area 100 of the display panel 1.

[0207] In some embodiments, referring to FIG3a, the orthographic projection of the bending axis region 102 of the support layer 20 onto the display panel 1 covers the center line P in the length direction or the center line in the width direction of the display panel 1. It should be noted that allowing a certain deviation or error within the allowable range of the module process to cover the orthographic projection of the bending axis region 102 of the support layer 20 onto the display panel 1 covering the center line P in the length direction or the center line in the width direction of the display panel 1.

[0208] This disclosure also provides a display module. Referring to Figures 2a-2f, 5a, and 5b, the module includes a display panel 1 and a support structure 2 located on the back side of the display panel 1. The display module further includes a protective structure 5 located on the display side of the display panel 1. The protective structure 5 includes a first film layer 51, a third adhesive layer 52, and a second film layer 53, which are stacked sequentially away from the display panel 1. The orthographic projection of the first film layer 51 onto the display panel 1 covers the display area of ​​the display panel 1. In region 100, the orthographic projection of the third adhesive layer 52 and the second film layer 53 on the display panel 1 covers the orthographic projection of the first film layer 51 on the display panel 1, and the orthographic projection area of ​​the third adhesive layer 52 and the second film layer 53 on the display panel 1 is larger than the orthographic projection area of ​​the first film layer 51 on the display panel 1; the protective structure 5 has a bending axis region 102; the protective structure 5 also includes a fourth adhesive layer 54, which is located in the same layer as the first film layer 51, and the fourth adhesive layer 54 is located at the opposite two side edges of the corresponding bending axis region 102 of the first film layer 51.

[0209] Specifically, by providing a fourth adhesive layer 54, which is in the same layer as the first film layer 51, on the opposite sides of the corresponding bending axis region 102 of the first film layer 51, at least partially blocking the air bubbles generated on the opposite sides of the first film layer 51 located in the bending axis region 102 during frequent bending, from the contact interface between the first film layer 51 and the third adhesive layer 52 and the display panel 1 to the display area of ​​the display panel 1, thereby improving or avoiding air bubble defects in the display module.

[0210] In some embodiments, the support structure 2 includes a support layer 20, a first adhesive layer 21, and a light plug 22. The support layer 20 has a first opening 201. The first end A of the light plug 22 is embedded in the first opening 201, and the second end B of the light plug 22 is located on the side of the support layer 20 opposite to the display panel 1. The orthographic projection of the second end B of the light plug 22 onto the support layer 20 covers the first opening 201 and overlaps with the peripheral area of ​​the support layer 20 surrounding the first opening 201. The first adhesive layer 21 is located between the support layer 20 and the second end B of the light plug 22. The orthographic projection of the first adhesive layer 21 onto the support layer 20 is located within the overlapping area of ​​the second end B of the light plug 22 and the orthographic projection of the support layer 20; the first adhesive layer 21 is connected to the support layer 20 and the second end B of the light plug 22 respectively; there is a first gap C between the support layer 20 and the first end A of the light plug 22; there is a second gap D between the first adhesive layer 21 and the first end A of the light plug 22; the first gap C and the second gap D are interconnected; a second opening 210 is provided in the first adhesive layer 21; the second opening 210 is interconnected with the second gap D and the outside of the first adhesive layer 21.

[0211] By creating a second opening 210 in the first adhesive layer 21, the second gap D and the first adhesive layer 21 can be connected, thereby forming a gas flow channel between the first gap C, the second gap D and the outside. This improves or avoids the problem of "air trapping" at the positions of the first gap C and the second gap D during the process of applying the support structure 2 to the back side of the display panel 1 due to the application pressure of rapid application, and ultimately improves or avoids the appearance of bulge marks on the display module at the corresponding light plug 22 position.

[0212] In some embodiments, the protective structure 5 further includes a fifth adhesive layer 55 located between the first film layer 51 and the display panel 1. The orthographic projection of the fifth adhesive layer 55 on the display panel 1 covers the orthographic projection of the first film layer 51 on the display panel 1, and the orthographic projection area of ​​the fifth adhesive layer 55 on the display panel 1 is larger than the orthographic projection area of ​​the first film layer 51 on the display panel 1. The fourth adhesive layer 54 covers the opposite side edge end faces of the corresponding bending axis region 102 of the first film layer 51, and the fourth adhesive layer 54 is respectively bonded to the third adhesive layer 52 and the fifth adhesive layer 55.

[0213] The fifth adhesive layer 55 enables the display panel 1 to be bonded to the first film layer 51.

[0214] In this embodiment, by covering the opposite side edge end faces of the corresponding bending axis region 102 of the first film layer 51 with the fourth adhesive layer 54, and by bonding the fourth adhesive layer 54 with the third adhesive layer 52 and the fifth adhesive layer 55 respectively, there can be no gap between the opposite side edges of the first film layer 51 located in the bending axis region 102 and the fourth adhesive layer 54, the third adhesive layer 52 and the fifth adhesive layer 55. This can completely prevent the generation of air bubbles on the opposite side edges of the first film layer 51 located in the bending axis region 102 during frequent bending, and thus completely prevent the display module from having air bubble defects.

[0215] In some embodiments, the orthographic projections of the fifth adhesive layer 55, the third adhesive layer 52, and the second film layer 53 on the display panel 1 cover the orthographic projection of the fourth adhesive layer 54 on the display panel 1; the fifth adhesive layer 55, the third adhesive layer 52, and the second film layer 53 cover the display side surface of the display panel 1.

[0216] In some embodiments, the material of the fourth adhesive layer 54 includes an insulating transparent adhesive material or a transparent adhesive material containing conductive components.

[0217] In some embodiments, the third adhesive layer 52, the fourth adhesive layer 54, and the fifth adhesive layer 55 are all made of transparent optical adhesive material.

[0218] In some embodiments, the third adhesive layer 52 and the fifth adhesive layer 55 are both made of transparent optical adhesive material. The fourth adhesive layer 54 is made of transparent optical adhesive material containing conductive components.

[0219] In some embodiments, the bending axis region 102 of the protective structure 5 corresponds to the bending axis region of the display panel 1 and the two overlap; the orthographic projection of the bending axis region 102 of the protective structure 5 on the display panel 1 is at least partially located in the display area 100 of the display panel 1.

[0220] In some embodiments, the orthographic projection of the bending axis area 102 of the protective structure 5 onto the display panel 1 covers the centerline P in the length direction or the centerline in the width direction of the display panel 1. It should be noted that allowing a certain deviation or error within the allowable range of the module process to cover the orthographic projection of the bending axis area 102 of the protective structure 5 onto the display panel 1 is permissible.

[0221] In some embodiments, the first film layer 51 is made of ultrathin flexible glass. The second film layer 53 is made of polyimide or polyethylene terephthalate.

[0222] Based on the above structure of the display module, this embodiment also provides a method for preparing the display module, including: step S01: preparing a display panel.

[0223] Step S02: Prepare the support structure.

[0224] In this step, the preparation of the support structure includes the preparation of a support layer, a first adhesive layer, and a light plug.

[0225] Step S03: Attach the support structure to the back of the display panel.

[0226] Step S04: Prepare the protective structure.

[0227] In this step, the preparation of the protective structure includes the preparation of a first film layer, a third adhesive layer, and a second film layer. The preparation of the protective structure also includes the preparation of a fourth adhesive layer by inkjet printing or roll-on application.

[0228] Step S05: Attach the protective structure to the display side of the display panel.

[0229] The display module provided in this embodiment, by providing a fourth adhesive layer 54 of the same layer as the first film layer 51 at the opposite sides of the corresponding bending axis region 102 of the first film layer 51, can at least partially block the air bubbles generated by the opposite sides of the first film layer 51 located in the bending axis region 102 during frequent bending from the contact interface between the first film layer 51 and the third adhesive layer 52 and the display panel 1 to the display area of ​​the display panel 1, thereby improving or avoiding air bubble defects in the display module.

[0230] This disclosure also provides a display module. Referring to Figures 2a-2f, 4a, 4b and 4c, the module includes a display panel 1 and a support structure 2 located on the back side of the display panel 1. The support structure 2 includes a support layer 20, a first adhesive layer 21 and a light plug 22. The display module also includes a flexible circuit board 4 located on the side of the support layer 20 away from the display panel 1. One end of the flexible circuit board 4 is bonded and electrically connected to the display panel 1, and the other end is bonded and electrically connected to a peripheral circuit board (not shown in the figure). The flexible circuit board 4 includes a second adhesive layer 41, a substrate 40 and an electrical component 42. The electrical component 42 is located on the side of the substrate 40 away from the support layer 20, and the second adhesive layer 41 is located on the side of the substrate 40 close to the support layer 20. The orthographic projections of the second adhesive layer 41 and the electrical component 42 on the substrate 40 do not overlap.

[0231] The display module provided in this embodiment ensures that the orthographic projections of the second adhesive layer 41 and the electrical component 42 on the substrate 40 do not overlap. After the flexible circuit board 4 is bent to the back side of the display panel 1, since the second adhesive layer 41 is not provided between the substrate 40 at the position of the electrical component 42 and the support layer 20, there is no "seemingly adhesive but not truly adhesive" state between the substrate 40 at the position of the electrical component 42 and the support layer 20. Therefore, when the display side surface of the display module is pressed during normal use, the display module will not be dented at the position of the corresponding electrical component 42, thereby avoiding the appearance of "dented" extrusion molding marks on the display side of the display module.

[0232] In some embodiments, a first opening 201 is formed in the support layer 20; a first end A of the light plug 22 is embedded in the first opening 201, and a second end B of the light plug 22 is located on the side of the support layer 20 away from the display panel 1, and the orthographic projection of the second end B of the light plug 22 on the support layer 20 covers the first opening 201 and overlaps with the peripheral area of ​​the support layer 20 surrounding the first opening 201; a first adhesive layer 21 is located between the support layer 20 and the second end B of the light plug 22, and the orthographic projection of the first adhesive layer 21 on the support layer 20 is located in the overlapping area of ​​the orthographic projections of the second end B of the light plug 22 and the support layer 20; the first adhesive layer 21 is connected to the support layer 20 and the second end B of the light plug 22 respectively; a first gap C is formed between the support layer 20 and the first end A of the light plug 22; a second gap D is formed between the first adhesive layer 21 and the first end A of the light plug 22; the first gap C and the second gap D are connected; a second opening 210 is formed in the first adhesive layer 21; the second opening 210 is connected to the second gap D and the outside of the first adhesive layer 21.

[0233] By creating a second opening 210 in the first adhesive layer 21, the second gap D and the first adhesive layer 21 can be connected, thereby forming a gas flow channel between the first gap C, the second gap D and the outside. This improves or avoids the problem of "air trapping" at the positions of the first gap C and the second gap D during the process of applying the support structure 2 to the back side of the display panel 1 due to the application pressure of rapid application, and ultimately improves or avoids the appearance of bulge marks on the display module at the corresponding light plug 22 position.

[0234] In some embodiments, a fifth opening 410 is provided in the second adhesive layer 41, and the orthographic projection of the fifth opening 410 on the substrate 40 covers the orthographic projection of the electrical component 42 on the substrate 40; a distance x is spaced between the fifth opening 410 and the orthographic projection of the electrical component 42 on the substrate 40.

[0235] The set distance x is consistent with the avoidance distance of the bending fixture at the position of the electrical component 42. On the one hand, it can avoid the bending fixture from bumping and damaging the electrical component 42 during the process of bending the flexible circuit board 4 to the back of the display panel 1. On the other hand, the bending fixture can make the second adhesive layer 41 firmly bond the flexible circuit board 4 and the support layer 20 together.

[0236] In some embodiments, the second adhesive layer 41 is an adhesive.

[0237] This disclosure also provides a display module. Referring to Figures 2a-2f, 3a and 3b, 4a, 4b and 4c, and 5a and 5b, the display module includes a display panel 1 and a support structure 2 located on the back side of the display panel 1. The support structure 2 includes a support layer 20, a first adhesive layer 21, a light plug 22, and a protective layer 23. A first opening 201 is formed in the support layer 20. The first end A of the light plug 22 is embedded in the first opening 201, and the second end B of the light plug 22 is located on the side of the support layer 20 away from the display panel 1. The orthographic projection of the second end B of the light plug 22 onto the support layer 20 covers the first opening 201 and surrounds the support layer 20. The peripheral areas of the first opening 201 overlap; the first adhesive layer 21 is located between the support layer 20 and the second end B of the light plug 22, and the orthographic projection of the first adhesive layer 21 on the support layer 20 is located in the overlapping area of ​​the orthographic projections of the second end B of the light plug 22 and the support layer 20; the first adhesive layer 21 is connected to the support layer 20 and the second end B of the light plug 22 respectively; there is a first gap C between the support layer 20 and the first end A of the light plug 22; there is a second gap D between the first adhesive layer 21 and the first end A of the light plug 22; the first gap C and the second gap D are connected; a second opening 210 is provided in the first adhesive layer 21; the second opening 210 is connected to the second gap D and the outside of the first adhesive layer 21.

[0238] The support layer 20 has a bending region 101; the display module also includes an ink layer 3, located between the support layer 20 and the protective layer 23, and the orthographic projection of the ink layer 3 on the support layer 20 at least partially overlaps with the bending region 101; the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is in contact with the ink layer 3, and the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap is in contact with the support layer 20; the thickness h1 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that overlaps is less than the thickness h2 of the portion of the orthographic projection of the protective layer 23 and the ink layer 3 on the display panel 1 that does not overlap.

[0239] The display module also includes a flexible circuit board 4, located on the side of the support layer 20 away from the display panel 1. One end of the flexible circuit board 4 is bonded and electrically connected to the display panel 1, and the other end is bonded and electrically connected to the peripheral circuit board (not shown in the figure). The flexible circuit board 4 includes a second adhesive layer 41, a substrate 40, and an electrical component 42. The electrical component 42 is located on the side of the substrate 40 away from the support layer 20, and the second adhesive layer 41 is located on the side of the substrate 40 close to the support layer 20. The orthographic projections of the second adhesive layer 41 and the electrical component 42 on the substrate 40 do not overlap.

[0240] The display module also includes a protective structure 5 located on the display side of the display panel 1. The protective structure 5 includes a first film layer 51, a third adhesive layer 52, and a second film layer 53, which are stacked sequentially away from the display panel 1. The orthographic projection of the first film layer 51 on the display panel 1 covers the display area 100 of the display panel 1, and the orthographic projections of the third adhesive layer 52 and the second film layer 53 on the display panel 1 cover the orthographic projection of the first film layer 51 on the display panel 1. The orthographic projection area of ​​the third adhesive layer 52 and the second film layer 53 on the display panel 1 is larger than the orthographic projection area of ​​the first film layer 51 on the display panel 1. The protective structure 5 has a bending axis region 102. The protective structure 5 also includes a fourth adhesive layer 54 located on the same layer as the first film layer 51. The fourth adhesive layer 54 is located at the opposite two edges of the corresponding bending axis region 102 of the first film layer 51.

[0241] Secondly, embodiments of this disclosure also provide a display device, including the display module in any of the above embodiments.

[0242] In some embodiments, the display device further includes a mid-frame located on the side of the ink layer in the display module opposite to the display panel, wherein the area of ​​the mid-frame overlapping with the ink layer is bonded to the ink layer; and at least a portion of the mid-frame not overlapping with the ink layer is bonded to a support layer in the display module.

[0243] In some embodiments, the fourth adhesive layer in the display module contacts and connects with the middle frame.

[0244] The display device provided in this embodiment, by employing the display module in the above embodiment, can improve or avoid defects such as bulging, extrusion, and bubbles in the display device, thereby improving the quality of the display device.

[0245] The display device provided in this disclosure can be any product or component with display function, such as an OLED panel, OLED TV, OLED billboard, monitor, mobile phone, or navigator.

[0246] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display module, wherein, Including the display panel, A support structure is located on the back side of the display panel; The support structure includes a support layer, a first adhesive layer, and a light plug; The support layer has a first opening; The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer at least partially overlaps with the orthographic projection of the first end on the support layer. The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projections of the first adhesive layer and the second end of the light plug onto the support layer at least partially overlap with the support layer; The first adhesive layer is connected to the support layer and the second end of the light plug, respectively; There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous. The first adhesive layer has a second opening; the second opening is configured to allow the second gap to communicate with the outside of the first adhesive layer.

2. The display module according to claim 1, wherein, The support structure also includes a protective layer. The protective layer is located on the side of the light plug opposite to the support layer, and there is a third gap between the protective layer and the light plug; The third gap communicates with the second opening and the second gap; The protective layer has a third opening, which communicates with the third gap and the outside of the protective layer.

3. The display module according to claim 2, wherein, The third opening has an opening at the end near the light plug that corresponds to the position of the second opening.

4. The display module according to claim 1, wherein, The orthographic projection of the first adhesive layer onto the support layer closes around the periphery of the first opening. The second opening penetrates one sidewall of the first adhesive layer.

5. The display module according to claim 1, wherein, The orthographic projection of the first adhesive layer on the support layer surrounds the periphery of the first opening, and the first adhesive layer breaks at the location of the second opening.

6. The display module according to claim 4 or 5, wherein, The number of the second opening is one or more.

7. The display module according to claim 2, wherein, The third opening is a first groove formed on the side of the protective layer near the support layer. The first groove extends from the third gap to the edge end face of the protective layer.

8. The display module according to claim 2, wherein, The third opening is a through hole formed in the protective layer. The through hole extends from the third gap to the edge face of the protective layer.

9. The display module according to claim 7 or 8, wherein, The number of the third openings is one or more.

10. The display module according to claim 1, wherein, The distance between the end face of the first end near the display panel and the display panel is greater than the distance between the side surface of the support layer near the display panel and the display panel.

11. The display module according to any one of claims 1-10, wherein, The support structure also includes a protective layer, which has a bending area; The display module further includes an ink layer located between the support layer and the protective layer, and the orthographic projection of the ink layer on the support layer at least partially overlaps with the bending area; The portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is in contact with the ink layer, and the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap is in contact with the support layer; The thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is less than the thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap.

12. The display module according to claim 11, wherein, In the portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap, the sum of the thicknesses of the protective layer and the ink layer is equal to the thickness of the protective layer in the portion where their orthographic projections on the display panel do not overlap.

13. The display module according to claim 11, wherein, The support layer also has a bending axis region, which is located on opposite sides of the bending axis region along the bending direction; The support layer has a plurality of second grooves on the side opposite to the display panel, and the plurality of second grooves are located in the bending area; The length direction of the second groove is along the extension direction of the bent shaft area; The adjacent second grooves are spaced apart from each other.

14. The display module according to claim 13, wherein, The bending axis area of ​​the support layer does not overlap with the ink layer; The support layer has multiple fourth openings in the bending axis region, and the multiple fourth openings are evenly spaced.

15. The display module according to claim 13, wherein, The bending area of ​​the support layer corresponds to the bending area of ​​the display panel and the two overlap. The bending axis area of ​​the support layer corresponds to the bending axis area of ​​the display panel and the two overlap. The bending axis region of the support layer and the orthographic projection of the bending region onto the display panel are at least partially located within the display area of ​​the display panel.

16. The display module according to claim 15, wherein, The orthographic projection of the bending axis region of the support layer onto the display panel covers the centerline of the display panel in the length direction or the centerline in the width direction.

17. The display module according to any one of claims 1-16, wherein, It also includes a flexible circuit board located on the side of the support layer opposite to the display panel. One end of the flexible circuit board is electrically connected to the display panel, and the other end is electrically connected to the peripheral circuit board. The flexible circuit board includes a second adhesive layer, a substrate, and electrical components. The electrical components are located on the side of the substrate away from the support layer, and the second adhesive layer is located on the side of the substrate close to the support layer. The second adhesive layer and the electrical component do not overlap in their orthographic projections on the substrate.

18. The display module according to claim 17, wherein, A fifth opening is provided in the second adhesive layer. The orthographic projection of the fifth opening on the substrate covers the orthographic projection of the electrical component on the substrate; The fifth opening is spaced at a predetermined distance from the orthographic projection of the electrical component on the substrate.

19. The display module according to any one of claims 1-18, wherein, It also includes a protective structure located on the display side of the display panel; The protective structure includes a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel; The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel; The protective structure has a bending axis area; The protective structure further includes a fourth adhesive layer, which is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region.

20. The display module according to claim 19, wherein, The protective structure also includes a fifth adhesive layer located between the first film layer and the display panel. The orthographic projection of the fifth adhesive layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the fifth adhesive layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel. The fourth adhesive layer covers the opposite two edge end faces of the first film layer corresponding to the bending axis region, and the fourth adhesive layer is respectively bonded to the third adhesive layer and the fifth adhesive layer.

21. The display module according to claim 20, wherein, The orthographic projections of the fifth adhesive layer, the third adhesive layer, and the second film layer on the display panel cover the orthographic projection of the fourth adhesive layer on the display panel; The fifth adhesive layer, the third adhesive layer, and the second film layer cover the display side surface of the display panel.

22. The display module according to claim 19, wherein, The material of the fourth adhesive layer includes an insulating transparent adhesive material or a transparent adhesive material containing conductive components.

23. The display module according to claim 19, wherein, The bending axis area of ​​the protective structure corresponds to the bending axis area of ​​the display panel and the two overlap. The orthographic projection of the bending axis region of the protective structure onto the display panel is at least partially located within the display area of ​​the display panel.

24. The display module according to claim 23, wherein, The orthographic projection of the bending axis area of ​​the protective structure onto the display panel covers the centerline of the display panel in the length direction or the centerline in the width direction.

25. The display module according to claim 1, wherein, The orthographic projection of the second end of the light plug onto the support layer covers the first opening and overlaps with the peripheral area of ​​the support layer surrounding the first opening, and the orthographic projection of the first adhesive layer onto the support layer is located within the overlapping area of ​​the orthographic projections of the second end of the light plug and the support layer.

26. A display module, wherein, Including the display panel, A support structure is located on the back side of the display panel; The support structure includes a support layer, a first adhesive layer, and a protective layer; The support layer has a bending axis area and bending areas arranged sequentially on both sides of the bending axis area; The display module further includes an ink layer located between the support layer and the protective layer, and the orthographic projection of the ink layer on the support layer at least partially overlaps with the bending area; The portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is in contact with the ink layer, and the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap is in contact with the support layer; The thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel overlap is less than the thickness of the portion where the orthographic projections of the protective layer and the ink layer on the display panel do not overlap.

27. The display module according to claim 26, wherein the support structure further includes a light plug, and a first opening is formed in the support layer; The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer covers the first opening and overlaps with the peripheral area of ​​the support layer surrounding the first opening. The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projection of the first adhesive layer on the support layer is located in the overlapping area of ​​the orthographic projections of the second end of the light plug and the support layer. The first adhesive layer is connected to the support layer and the second end of the light plug, respectively; There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous. The first adhesive layer has a second opening; the second opening communicates with the second gap and the outside of the first adhesive layer; The protective layer is located on the side of the light plug opposite to the support layer.

28. A display module, wherein, Including the display panel, A support structure is located on the back side of the display panel; The display module also includes a protective structure located on the display side of the display panel; The protective structure includes a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel; The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel; The protective structure has a bending axis area; The protective structure further includes a fourth adhesive layer, which is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region.

29. A display module, wherein, Including the display panel, A support structure is located on the back side of the display panel; The support structure includes a support layer, a first adhesive layer, and a light plug; The display module also includes a flexible circuit board located on the side of the support layer opposite to the display panel. One end of the flexible circuit board is electrically connected to the display panel, and the other end is electrically connected to the peripheral circuit board. The flexible circuit board includes a second adhesive layer, a substrate, and electrical components. The electrical components are located on the side of the substrate away from the support layer, and the second adhesive layer is located on the side of the substrate close to the support layer. The second adhesive layer and the electrical component do not overlap in their orthographic projections on the substrate.

30. A display device, wherein, Includes the display module as described in any one of claims 1-29.

31. The display device according to claim 30, wherein, It also includes a mid-frame, located on the side of the ink layer in the display module opposite to the display panel. The area of ​​the middle frame that overlaps with the ink layer is bonded to the ink layer; At least a portion of the middle frame that does not overlap with the ink layer is bonded to the support layer in the display module.

32. The display device according to claim 31, wherein, The fourth adhesive layer in the display module contacts and connects with the middle frame.

33. A method for manufacturing a display module, wherein, include: Fabrication of display panels; Fabrication of support structure; The support structure is attached to the back side of the display panel; Preparation of protective structures; The protective structure is attached to the display side of the display panel; The fabrication of the support structure includes fabricating a support layer, a first adhesive layer, and an optical plug. A first opening is formed in the support layer; The first end of the light plug is embedded in the first opening, and the second end of the light plug is located on the side of the support layer away from the display panel. The orthographic projection of the second end of the light plug on the support layer covers the first opening and overlaps with the peripheral area of ​​the support layer surrounding the first opening. The first adhesive layer is located between the support layer and the second end of the light plug, and the orthographic projection of the first adhesive layer on the support layer is located in the overlapping area of ​​the orthographic projections of the second end of the light plug and the support layer. The first adhesive layer is connected to the support layer and the second end of the light plug, respectively; There is a first gap between the support layer and the first end of the light plug; there is a second gap between the first adhesive layer and the first end of the light plug; the first gap and the second gap are continuous. The first adhesive layer has a second opening; the second opening communicates with the second gap and the outside of the first adhesive layer; The preparation of the protective structure includes preparing a first film layer, a third adhesive layer, and a second film layer, wherein the first film layer, the third adhesive layer, and the second film layer are stacked sequentially away from the display panel; The orthographic projection of the first film layer on the display panel covers the display area of ​​the display panel, the orthographic projection of the third adhesive layer and the second film layer on the display panel covers the orthographic projection of the first film layer on the display panel, and the orthographic projection area of ​​the third adhesive layer and the second film layer on the display panel is larger than the orthographic projection area of ​​the first film layer on the display panel; The protective structure has a bending axis area; The preparation of the protective structure also includes preparing a fourth adhesive layer using inkjet printing or roll-on application methods. The fourth adhesive layer is located in the same layer as the first film layer, and the fourth adhesive layer is located on the opposite two sides of the first film layer corresponding to the bending axis region.

Images