Display device

Abstract

The application relates to a display device. The display device comprises a cover plate, a display module, a gasket and a filling part. The display module is arranged on one side surface of the cover plate. The display module is provided with a through hole penetrating through the display module along the thickness direction of the display module. The gasket is arranged in the through hole. The thickness of the gasket is smaller than the depth of the through hole. A gap is arranged between the side wall of the gasket and the side wall of the through hole. The filling part fills part of the gap between the gasket and the display module. In the display device, the thickness of the gasket is smaller than the depth of the through hole. A gap is arranged between the side wall of the gasket and the side wall of the through hole. Part of the gap between the gasket and the display module is filled by the filling part. Therefore, the gap between the thickness of the gasket and the depth of the through hole can be compensated by the filling part. The thickness of the gasket and the depth of the through hole are matched, so that the cover plate is not pressed to form an indentation.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) display technology is a new type of display technology that has gradually attracted attention due to its unique advantages such as low power consumption, high saturation, fast response time and wide viewing angle. In particular, foldable display devices have been gradually developed and applied.

[0003] Foldable display devices typically require the installation of multiple sensors, necessitating the creation of perforated areas in the regions corresponding to these sensors. To ensure these perforated areas meet light transmittance requirements, holes are usually cut into all film layers except the outermost layer (such as the cover plate). After perforation, the perforated areas often suffer from poor support. Related technologies address this by placing optical pads within these perforated areas to improve support. However, the thickness of these optical pads is subject to manufacturing tolerances. If the thickness of the optical pad does not match the depth of the perforated areas, the pressure between the optical pad and the cover plate can easily cause marks to appear on the cover plate.

[0004] Therefore, it is urgent to improve the aforementioned technical issues. Summary of the Invention

[0005] This application provides a display device to improve the technical problem that when the thickness of the optical pad in the hole area has process tolerances and the thickness of the optical pad does not match the depth of the hole area, the pressure between the optical pad and the cover plate can easily cause marks on the cover plate.

[0006] To achieve the above objectives, this application provides a display device, comprising:

[0007] Cover plate;

[0008] The display module is disposed on one side surface of the cover plate, and the display module is provided with a through hole that penetrates the display module along the thickness direction of the display module;

[0009] A gasket is disposed within the through hole, the thickness of the gasket being less than the depth of the through hole, and a gap is provided between the sidewall of the gasket and the sidewall of the through hole;

[0010] The filling portion fills at least a portion of the gap between the gasket and the display module.

[0011] Optionally, the display module includes an adhesive layer, a display panel, and a support layer stacked together, wherein the adhesive layer is disposed between the display panel and the cover plate;

[0012] The through-hole penetrates the adhesive layer, the display panel, and the support layer. The filling portion includes a first adhesive portion and a second adhesive portion. The first adhesive portion fills the gap between the gasket and the cover plate, and the second adhesive portion at least fills the gap between the adhesive layer and the sidewall of the display panel and the sidewall of the gasket.

[0013] Optionally, the display device further includes a middle frame disposed on the side of the display module opposite to the cover plate;

[0014] The sidewall of the opening of the through hole on the support layer is flush with the sidewall of the opening of the through hole on the display panel, and the end face of the gasket away from the cover plate is bonded to the middle frame through the third adhesive part.

[0015] The third adhesive portion is made of a different material than the first adhesive portion.

[0016] Optionally, the second adhesive portion fills the gap between the sidewall of the through hole and the sidewall of the gasket, and at least covers a portion of the opening edge of the through hole.

[0017] Optionally, the opening of the through hole on the display panel and the adhesive layer is a first sub-hole, and the opening of the through hole on the support layer is a second sub-hole. At least a portion of the second sub-holes on the support layer are larger than the first sub-holes, and the second sub-holes increase in size along the direction of the support layer away from the cover plate.

[0018] The gasket includes a first sub-part corresponding to the first sub-hole and a second sub-part corresponding to the second sub-hole, wherein the size of the second sub-part is larger than the size of the first sub-part in the same direction;

[0019] The first adhesive portion is provided between the first sub-part and the cover plate, and the second adhesive portion is provided between the sidewall of the first sub-part and the sidewall of the first sub-hole. The second adhesive portion extends along the sidewall of the through hole and at least fills part of the gap between the sidewall of the second sub-part and the sidewall of the second sub-hole.

[0020] Optionally, the thickness of the second adhesive portion within the second sub-hole is less than the depth of the second sub-hole, and the end face of the second sub-portion facing away from the cover plate is flush with the surface of the display module facing away from the cover plate.

[0021] Optionally, the display device further includes a middle frame disposed on the side of the display module opposite to the cover plate;

[0022] The end face of the second sub-part facing away from the cover plate and the surface of the display module facing away from the cover plate are both bonded to the middle frame by a third adhesive part, the material of which is different from that of the first adhesive part.

[0023] Optionally, the support layer includes a first sub-layer and a second sub-layer stacked together. The second sub-layer is disposed on the side of the first sub-layer facing away from the cover plate. The modulus of the second sub-layer is greater than that of the first sub-layer. The sidewall of the opening of the second sub-hole on the first sub-layer is flush with the sidewall of the opening of the first sub-hole. The opening of the second sub-hole on the second sub-layer is larger than that of the first sub-hole.

[0024] Optionally, the support layer includes a first sub-layer, a second sub-layer, and a third sub-layer stacked sequentially. The third sub-layer is disposed on the side of the second sub-layer opposite to the first sub-layer. The opening of the second sub-hole on the third sub-layer is larger than the opening of the second sub-hole on the second sub-layer, and the opening of the second sub-hole on the second sub-layer is larger than the opening of the first sub-hole on the first sub-layer.

[0025] Optionally, the second adhesive portion is a curable adhesive, and the first adhesive portion is a curable adhesive or an optical adhesive.

[0026] In the display device of this application embodiment, by making the thickness of the gasket less than the depth of the through hole, a gap is provided between the sidewall of the gasket and the sidewall of the through hole, and a filling part is used to fill at least part of the gap between the through hole and the display panel, thereby the filling part can be used to compensate for the discontinuity between the thickness of the gasket and the depth of the through hole, avoiding the mismatch between the thickness of the gasket and the depth of the through hole, which would cause the cover plate to be squeezed and produce an imprint.

[0027] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0030] Figure 1 This is a top view of a display device provided in an exemplary embodiment of this disclosure;

[0031] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure at point CC;

[0032] Figure 3 yes Figure 1 Another cross-sectional structural diagram at the CC position;

[0033] Figure 4 yes Figure 1 Another cross-sectional structural diagram at the CC position;

[0034] Figure 5 yes Figure 1 Another cross-sectional structural diagram at the CC position;

[0035] Figures 6A to 6C yes Figure 2 Process flow diagram of the display device in the process;

[0036] Figure 7A yes Figure 3 Process flow diagram of the display device in the process;

[0037] Figures 8A to 8D yes Figure 4 The process flow diagram of the display device in the process.

[0038] Explanation of reference numerals in the attached figures:

[0039] Display device 1;

[0040] Cover plate 10;

[0041] Display module 20, through hole 20a, first sub-hole 201, second sub-hole 202, adhesive layer 21, polarizer 22, display panel 23, display area AA, non-display area NA, support layer 24, first sub-layer 241, second sub-layer 242, third sub-layer 243;

[0042] Gasket 30, first sub-part 31, second sub-part 32;

[0043] Filler portion 40, first adhesive portion 41, second adhesive portion 42, third adhesive portion 43;

[0044] Mid-frame 50;

[0045] Glue 61;

[0046] Pressure head 81. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0048] This application provides a display device 1, such as... Figures 1 to 5As shown, the device includes a cover plate 10, a display module 20, a gasket 30, and a filling part 40. The display module 20 is disposed in contact with one side surface of the cover plate 10. The display module 20 is provided with a through hole 20a, which penetrates the display module 20 along its thickness direction. The gasket 30 is disposed in the through hole 20a, and the thickness of the gasket 30 is less than the depth of the through hole 20a. A gap 70 is provided between the side wall of the gasket 30 and the side wall of the through hole 20a. The filling part 40 at least fills part of the gap between the gasket 30 and the display module 20.

[0049] Display device 1 is a flexible display device, such as a foldable display device.

[0050] The cover plate 10 is made of a flexible material, such as polyimide (PI), polycarbonate (PC), polynorbornene (PNB), and polyethylene terephthalate (PET). Because the cover plate 10 is a flexible material, the display device 1 has good bending performance, and the cover plate 10 can be bent together with the display module 20.

[0051] The cover plate 10 is disposed on the light-emitting surface side of the display module 20. The cover plate 10 can protect the display module 20 and prevent the display module 20 from being damaged by mechanical impact.

[0052] like Figures 1 to 5 As shown, the display module 20 is provided with a through hole 20a, which penetrates the display module 20 along the thickness direction of the display module 20, that is, the depth of the through hole 20a is the same as the thickness of the display module 20.

[0053] In this application, thickness refers to the dimension in the direction perpendicular to the display surface of the display module 20.

[0054] In some embodiments, the through-hole 20a may correspond to a sensor (not shown in the figure). The sensor may be located on the side of the display module 20 away from the cover plate 10. The sensor can receive light incident from the side of the cover plate 10 through the through-hole 20a, thereby realizing the sensing function. By having the through-hole 20a pass through the display module 20, the film layer of the display module 20 can be prevented from blocking light and affecting the function of the sensor.

[0055] To compensate for the poor membrane support at the through-hole 20a, a gasket 30 is placed inside the through-hole 20a for support. The gasket 30 is made of a transparent material, such as polycarbonate, polymethyl methacrylate (PMMA), glass, or a composite material of multiple materials.

[0056] Optionally, the shape of the gasket 30 can match the shape of the through hole 20a, but is not limited thereto. The thickness of the gasket 30 is less than the depth of the through hole 20a, and a gap is provided between the sidewall of the gasket 30 and the sidewall of the through hole 20a. With the above arrangement, the gasket 30 can be prevented from protruding from the through hole 20a, thus avoiding the formation of marks on the film layer such as the cover plate 10. The filling part 40 can fill the gap between the gasket 30 and the through hole 20a.

[0057] It should be noted that at least a portion of the filling portion 40 is a curable adhesive, such as a UV-curable adhesive or a thermosetting adhesive. Alternatively, at least a portion of the filling portion 40 is an optically clear resin (OCR), a UV adhesive, or the like. At least a portion of the material in the filling portion 40 is in a liquid state during filling, and therefore can flow freely to fill the gap between the gasket 30 and the sidewall of the through hole 20a.

[0058] The filling part 40 can not only fix the gasket 30 and prevent the gasket 30 from shaking in the through hole 20a, but also compensate for the difference between the thickness of the gasket 30 and the depth of the through hole 20a, preventing the gasket 30 from being mismatched with the depth of the through hole 20a and thus squeezing the cover plate 10 to form an imprint.

[0059] The curable adhesive and optically transparent adhesive in the filling part 40 can be formed by a dispensing process, but are not limited to this.

[0060] Optionally, such as Figures 2 to 5 As shown, the display module 20 includes an adhesive layer 21, a display panel 23, and a support layer 24 stacked together. The adhesive layer 21 is disposed between the display panel 23 and the cover plate 10. A through-hole 20a penetrates the adhesive layer 21, the display panel 23, and the support layer 24. The filling portion 40 includes a first adhesive portion 41 and a second adhesive portion 42. The first adhesive portion 41 fills the gap between the gasket 30 and the cover plate 10. The first adhesive portion 41 fills the gap between the gasket 30 and the adhesive layer 21 and the display panel 23, and the second adhesive portion 42 at least fills the gap between the sidewalls of the adhesive layer 21 and the display panel 23 and the sidewalls of the gasket 30.

[0061] The display panel 23 can be an OLED panel, a Mini-LED panel, a Micro-LED panel, etc. The display panel 23 is a flexible panel, thus making the display device 1 a foldable display device.

[0062] In some embodiments, the through-hole 20a has the same opening size on the adhesive layer 21 and the display panel 23, so that the same process can be used to make holes on the adhesive layer 21 and the display panel 23, simplifying the manufacturing process of the through-hole 20a.

[0063] like Figure 1As shown, the display panel 23 includes a display area AA and a non-display area NA disposed around the display area AA. The display area AA is used to display images and has multiple sub-pixels, such as red sub-pixels, green sub-pixels, and blue sub-pixels, thereby achieving color display. The non-display area NA is provided with driving circuits, such as gate driving circuits, which are used to drive the sub-pixels to display.

[0064] It should be noted that, Figure 1 In this embodiment, the through-hole 20a is located within the non-display area NA, but this should not be construed as a limitation of this application. The through-hole 20a may also be located within the display area AA.

[0065] Specifically, the display panel 23 may include a flexible substrate, an array layer, and a light-emitting layer stacked sequentially. The flexible substrate may be made of polyimide (PI), polycarbonate (PC), polynorbornene (PNB), or polyethylene terephthalate (PET). The array layer is disposed on the flexible substrate and has a driving circuit for driving sub-pixel display. The light-emitting layer may include a stack of an anode, a light-emitting material layer, and a cathode. The anode and cathode are electrically connected to the driving circuit. The anode provides holes and electrons, and the holes and electrons recombine in the light-emitting material layer to emit light.

[0066] The display panel 23 may further include an encapsulation layer disposed on the surface of the light-emitting layer facing away from the flexible substrate. The encapsulation layer protects the light-emitting layer from water, oxygen, and other contaminants that could affect its lifespan. The encapsulation layer may be formed by alternating layers of one or more organic layers and one or more inorganic layers. For example, the organic layer may be a single layer or multiple layers formed from polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The inorganic layer may be a single layer or multiple layers of metal oxides or metal nitrides, such as silicon nitride, aluminum oxide, or silicon dioxide.

[0067] like Figures 2 to 5 As shown, the adhesive layer 21 is disposed between the light-emitting surface of the display panel 23 and the cover plate 10. In order to avoid the adhesive layer 21 from obscuring the image of the display panel 23, the adhesive layer 21 is a transparent adhesive material, such as optically clear adhesive (OCA) 61, pressure-sensitive adhesive, etc.

[0068] like Figures 2 to 5As shown, the support layer 24 is disposed on the side of the display panel 23 opposite to the light-emitting surface of the display panel 23. The support layer 24 can be a stack of one or more flexible and rigid materials. Flexible materials can be polyethylene terephthalate, polyimide, polycarbonate, carbon fiber, etc. Rigid materials can be stainless steel, titanium, aluminum, copper, etc. The support layer 24 is used to support and protect the display panel 23, making the back of the display panel 23 less susceptible to impact damage.

[0069] like Figures 2 to 5 As shown, the through-hole 20a penetrates each film layer of the display module 20. When the display module 20 includes a stacked adhesive layer 21, a display panel 23, and a support layer 24, the through-hole 20a penetrates the adhesive layer 21, the display panel 23, and the support layer 24. When the display panel 23 also includes other film layers, the through-hole 20a also penetrates the other film layers.

[0070] like Figures 2 to 5 As shown, the first adhesive portion 41 fills the gap between the gasket 30 and the cover plate 10. The second adhesive portion 42 fills the gap between the sidewall of the gasket 30 and the sidewall of the adhesive layer 21 and the display panel 23. That is to say, the first adhesive portion 41 is located between the gasket 30 and the cover plate 10, and the second adhesive portion 42 is located between the sidewall of the gasket 30 and the sidewall of the through hole 20a.

[0071] Optionally, such as Figure 2 As shown, the display device 1 also includes a middle frame 50 disposed on the side of the display module 20 away from the cover plate 10; the sidewall of the opening of the through hole 20a on the support layer 24 is flush with the sidewall of the opening of the through hole 20a on the display panel 23; the end face of the gasket 30 near the cover plate 10 is bonded to the cover plate 10 through the first adhesive part 41, and the end face of the gasket 30 away from the cover plate 10 is bonded to the middle frame 50 through the third adhesive part 43; wherein, the third adhesive part 43 is made of a different material than the first adhesive part 41.

[0072] The end face of the gasket 30 near the cover plate 10 is the side surface of the gasket 30 near the cover plate 10. The end face of the gasket 30 near the cover plate 10 is bonded to the cover plate 10 through the first adhesive part 41. That is to say, the side surface of the first adhesive part 41 near the cover plate 10 is bonded to the cover plate 10, and the side surface of the first adhesive part 41 near the gasket 30 is bonded to the gasket 30.

[0073] In some embodiments, such as Figure 2 As shown, the first adhesive part 41 can be an optical adhesive, and the second adhesive part 42 and the third adhesive part 43 are curable adhesives.

[0074] In some embodiments, the thickness of the first adhesive portion 41 can be from 15 micrometers to 50 micrometers. For example, the thickness of the third adhesive portion 43 can be 15 micrometers, 20 micrometers, 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, etc.

[0075] In some embodiments, the thickness of the gasket 30 may be 15 micrometers to 100 micrometers smaller than the depth of the through hole 20a, thereby reserving filling space for the filling portion 40.

[0076] In some embodiments, the distance between the end face of the gasket 30 facing away from the cover plate 10 and the surface of the display module 20 facing away from the cover plate 10 is 0.2 mm to 1 mm, and the gasket 30 does not extend beyond the surface of the display module 20 facing away from the cover plate 10.

[0077] Please see Figures 6A to 6B , showed Figure 2 The process flow diagram of display device 1 in the diagram.

[0078] like Figure 6A As shown, a through hole 20a is formed on the display module 20. The cover plate 10 is then attached to the display module 20.

[0079] like Figure 6B As shown, the first adhesive portion 41 is used to bond the gasket 30 to the cover plate 10. With the above arrangement, the gasket 30 and the cover plate 10 can be pre-fixed through the first adhesive portion 41. At the same time, the modulus of the first adhesive portion 41 is less than the modulus of the gasket 30, thereby avoiding direct contact between the gasket 30 and the cover plate 10, which would result in imprints on the cover plate 10.

[0080] like Figure 6C As shown, adhesive 61 is applied to the area corresponding to the through hole 20a using a dispensing process. The adhesive 61 flows into the through hole 20a along the gap between the through hole 20a and the gasket 30.

[0081] In some embodiments, such as Figure 6C As shown, the distance between the upper surface of the adhesive 61 and the upper surface of the support layer is 15 micrometers to 50 micrometers. For example, the distance between the upper surface of the adhesive 61 and the upper surface of the support layer is 15 micrometers, 20 micrometers, 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 50 micrometers, etc. The thickness of the adhesive 61 can be adjusted according to the size of the gap, etc., and this application does not limit it in this regard.

[0082] Please see Figure 2 After the above process, the portion of adhesive 61 located in the gap cures to form the second adhesive portion 42. The portion of adhesive 61 located on the side of the gasket 30 opposite to the cover plate 10 cures to form the third adhesive portion 43, which can be bonded to the middle frame 50.

[0083] This means that the third adhesive part 43 and the second adhesive part 42 can be formed by the same dispensing process. With the above arrangement, the filling part 40 can compensate for the difference between the thickness of the gasket 30 and the depth of the through hole 20a. The third adhesive part 43 can realize the bonding between the gasket 30 and the middle frame 50, thereby simplifying the manufacturing process of the display device 1.

[0084] Optionally, such as Figure 2 As shown, the second adhesive portion 42 fills the gap between the sidewall of the through hole 20a and the sidewall of the gasket 30, and the second adhesive portion 42 at least covers part of the opening edge of the through hole 20a.

[0085] Please see Figure 6C and Figure 2 After the second adhesive portion 42 is formed by the dispensing process, during the bonding process between the display module 20 and the middle frame 50, some adhesive 61 will overflow to the edge of the opening of the through hole 20a. That is, the second adhesive portion 42 and the third adhesive portion 43 are both formed by the same dispensing process, which simplifies the manufacturing process of the display device 1. The third adhesive portion 43 can increase the bonding area between the middle frame 50 and the display module 20, and improve the reliability of the fixation between the display module 20 and the middle frame 50.

[0086] Optionally, such as Figure 3 As shown, Figure 3 A cross-sectional view of yet another display device 1 is shown. Figure 3 The display device 1 in Figure 2 The difference in the display device 1 lies in the bonding method between the gasket 30 and the cover plate 10 and the middle frame 50. The end face of the gasket 30 near the cover plate 10 is bonded to the cover plate 10 through the first adhesive part 41, and the end face of the gasket 30 away from the cover plate 10 is bonded to the middle frame 50 through the third adhesive part 43.

[0087] The end face of the gasket 30 near the cover plate 10 is the side surface of the gasket 30 near the cover plate 10. The end face of the gasket 30 near the cover plate 10 is bonded to the cover plate 10 through the first adhesive part 41.

[0088] The end face of the gasket 30 facing away from the cover plate 10 is bonded to the middle frame 50 via the third adhesive part 43. This arrangement simplifies the manufacturing process of the display device 1.

[0089] In some embodiments, such as Figure 3 As shown, the third adhesive part 43 can be an optical adhesive, and the first adhesive part 41 and the second adhesive part 42 are curable adhesives.

[0090] Specifically, such as Figure 7AAs shown, a through hole 20a is formed on the display module 20. The cover plate 10 is attached to the display module 20. Adhesive 61 is applied to the through hole 20a, and then a gasket 30 attached to the middle frame 50 is aligned with the through hole 20a and placed into the through hole 20a. By pre-fixing the gasket 30 to the middle frame 50, the adhesive 61 can overflow along the side wall of the through hole 20a by pressing the middle frame 50. The overflowing adhesive 61 can be directly bonded to the middle frame 50, simplifying the process.

[0091] Please combine Figure 7A and Figure 3 The adhesive 61 located in the through hole 20a overflows along the gap between the gasket 30 and the through hole 20a under the pressure of the gasket 30. After the adhesive 61 cures, it forms a first adhesive portion 41 and a second adhesive portion 42. The first adhesive portion 41 is located between the gasket 30 and the cover plate 10, and the second adhesive portion 42 is located between the side wall of the gasket 30 and the side wall of the through hole 20a, and the second adhesive portion 42 overflows to the opening edge of the through hole 20a. The modulus of the first adhesive portion 41 is less than the modulus of the gasket 30, thereby preventing the gasket 30 from directly contacting the cover plate 10 and causing marks to appear on the cover plate 10.

[0092] like Figure 7A As shown, the end face of the gasket 30 facing away from the cover plate 10 is bonded to the middle frame 50 via the third adhesive portion 43. Specifically, the shape and size of the third adhesive portion 43 can match the shape and size of the side surface of the gasket 30 closest to the middle frame 50. The gasket 30 can be attached to the middle frame 50 via the third adhesive portion 43 first, and then the middle frame 50 with the gasket 30 attached can be aligned and assembled with the through hole 20a.

[0093] Optionally, combined Figure 7A and Figure 3 The second adhesive portion 42 at least covers part of the opening edge of the through hole 20a, and the material of the second adhesive portion 42 is different from that of the third adhesive portion 43.

[0094] After the glue 61 overflows from the through hole 20a, it covers the opening edge of the through hole 20a and contacts the third glue portion 43 on the middle frame 50. The overflowing glue 61 can increase the contact area between the middle frame 50 and the display module 20, thereby improving the reliability of the fixation between the display module 20 and the middle frame 50.

[0095] In all the above embodiments, the through hole 20a can be a hole with a uniform inner diameter, that is, the sidewall of the through hole 20a is flush. In this case, the structure of the gasket 30 is simple and easy to process, and the filling part 40 can be directly bonded to the middle frame 50, reducing the assembly process. Bonding the display module 20 to the middle frame 50 by dispensing improves the structural and overall stability at the through hole 20a. The gap between the gasket 30 and the display module 20 is filled and reinforced by the filling part 40, improving the impact resistance and support performance of the display device 1.

[0096] Optionally, such as Figure 4 As shown, the opening of the through hole 20a on the display panel 23 and the adhesive layer 21 is a first sub-hole, and the opening of the through hole 20a on the support layer 24 is a second sub-hole. At least a portion of the second sub-hole 202 on the support layer 24 is larger than the first sub-hole 201, and the second sub-hole 202 increases in size along the direction of the support layer 24 away from the cover plate 10. The gasket 30 includes a first sub-part 31 corresponding to the first sub-hole 201 and a second sub-part 32 corresponding to the second sub-hole 202. In the same direction, the size of the second sub-part 32 is larger than the size of the first sub-part 31. A first adhesive part 41 is provided between the first sub-part 31 and the cover plate 10, and a second adhesive part 42 is provided between the sidewall of the first sub-part 31 and the sidewall of the first sub-hole 201. The second adhesive part 42 extends along the sidewall of the through hole 20a and at least fills a portion of the gap between the sidewall of the second sub-part 32 and the sidewall of the second sub-hole 202.

[0097] The through hole 20a includes a first sub-hole 201 and a second sub-hole 202 that are connected, and the opening of the second sub-hole 202 is larger than the opening of the first sub-hole 201. That is to say, the inner diameter of the through hole 20a has at least two different sizes, and the second sub-hole 202 with the larger opening is located on the side of the first sub-hole 201 with the smaller opening away from the cover plate 10.

[0098] In some embodiments, the size of the second sub-hole 202 is 2 mm to 20 mm larger than the size of the first sub-hole 201, but is not limited thereto. The size of the second sub-hole 202 refers to... Figure 4 The dimension in the horizontal direction, the dimension of the first sub-hole 201 refers to Figure 4 The dimension in the horizontal direction.

[0099] Accordingly, such as Figure 4 As shown, the gasket 30 includes a first sub-part 31 corresponding to the first sub-hole 201 and a second sub-part 32 corresponding to the second sub-hole 202, wherein the size of the second sub-part 32 is larger than the size of the first sub-part 31. That is to say, the sidewall of the second sub-part 32 is spaced apart from the sidewall of the first sub-part 31, and the sidewall of the second sub-part 32 is located on the side of the sidewall of the first sub-part 31 away from the center of the gasket 30.

[0100] For ease of description, the gaps between the gasket 30 and the through hole 20a are respectively named the first gap, the second gap, and the third gap. Specifically, the first sub-part 31 and the first sub-hole 201 form the first gap and the second gap. The first gap is the gap between the end face of the first sub-part 31 near the cover plate 10 and the cover plate 10 near the first sub-part 31, and the first adhesive part 41 is formed within the first gap. The second gap is the gap between the side wall of the first sub-part 31 and the side wall of the first sub-hole 201. The second sub-part 32 and the second sub-hole 202 form the third gap and the fourth gap. The third gap is located between the end face of the second sub-part 32 near the first sub-part 31 and the bottom wall of the second sub-hole 202 near the second sub-part 32, and the fourth gap is located between the side wall of the second sub-part 32 and the side wall of the second sub-hole 202. The second adhesive part 42 is formed within the second gap, the third gap, and the fourth gap.

[0101] The bottom wall of the second sub-hole 202 near the second sub-part 32 refers to the side surface of the second sub-hole 202 that is parallel to the display surface. The bottom wall of the second sub-hole 202 is connected to the side wall of the second sub-hole 202.

[0102] In some embodiments, the width of the second gap can be from 0.2 mm to 1 mm.

[0103] In some embodiments, the width of the fourth gap can be from 0.5 mm to 2 mm.

[0104] In some embodiments, the thickness of the first sub-part 31 may be 15 micrometers to 50 micrometers smaller than the depth of the first sub-hole 201.

[0105] In some embodiments, the thickness of the second sub-part 32 may be 15 micrometers to 50 micrometers smaller than the depth of the second sub-hole 202.

[0106] In some embodiments, the thickness of the fourth gap not filled by the first adhesive portion 41 may be 50 micrometers smaller than the depth of the second sub-hole 202.

[0107] Please see Figures 8A to 8C , showed Figure 4 The process flow diagram of display device 1 in the diagram.

[0108] like Figure 8A As shown, a through hole 20a is formed on the display module 20. The cover plate 10 is then attached to the display module 20.

[0109] like Figure 8B As shown, adhesive 61 can be placed inside the through hole 20a.

[0110] like Figure 8CAs shown, the gasket 30 is placed into the through hole 20a, and the gasket 30 is fixed by the pressure head 81. The gasket 30 squeezes the glue 61 so that the glue 61 fills at least the first gap, the second gap and the third gap.

[0111] Optionally, the thickness of the second adhesive portion 42 within the second sub-hole 202 is less than or equal to the depth of the second sub-hole 202, and the end face of the second sub-portion 32 facing away from the cover plate 10 is flush with the surface of the display module 20 facing away from the cover plate 10.

[0112] The thickness of the second adhesive portion 42 within the second sub-hole 202 is less than or equal to the depth of the second sub-hole 202. This means that the adhesive 61 cannot completely fill the fourth gap, thereby preventing the adhesive 61 from overflowing the through hole 20a and affecting the smoothness of the opening edge of the through hole 20a.

[0113] It should be understood that the amount of adhesive 61 can be controlled so that adhesive 61 cannot completely fill the fourth gap.

[0114] like Figure 8D As shown, remove the pressure head 81 and bond the middle frame 50 to the gasket 30 and the display module 20 through the third adhesive part 43.

[0115] like Figure 4 As shown, the end face of the second sub-part 32 facing away from the cover plate 10 is flush with the surface of the display module 20 facing away from the cover plate 10. With the above arrangement, the end face of the gasket 30 facing away from the cover plate 10 and the surface of the display module 20 facing away from the cover plate 10 can be flat surfaces, so that it can be bonded to the middle frame 50, avoiding the difference in thickness between the gasket 30 and the display module 20, which would cause marks to appear on the cover plate 10.

[0116] like Figure 8C As shown, in order to make the surface of the gasket 30 facing away from the cover plate 10 flush with the surface of the display module 20 facing away from the cover plate 10, a flat pressure head 81 can be used to apply pressure to the gasket 30.

[0117] It should be noted that, since the second adhesive part 42 is provided in the third gap, the portion of the side wall of the second sub-part 32 that extends beyond the side wall of the first sub-part 31 can support the side wall of the first sub-hole 201, thereby further improving the support reliability at the through hole 20a.

[0118] Optionally, such as Figure 8D As shown, the display device 1 also includes a middle frame 50 disposed on the side of the display module 20 away from the cover plate 10; the end face of the second sub-part 32 away from the cover plate 10 and the surface of the display module 20 away from the cover plate 10 are both bonded to the middle frame 50 by the third adhesive part 43.

[0119] The third adhesive part 43 is made of an adhesive material. The third adhesive part 43 can be frame adhesive, optical adhesive, etc. The surface of the third adhesive part 43 near the display module 20 is bonded to the display module 20 and the second sub-part 32, and the surface of the third adhesive part 43 near the middle frame 50 is bonded to the middle frame 50.

[0120] Optionally, such as Figure 4 As shown, the support layer 24 includes a first sub-layer 241 and a second sub-layer 242 stacked together. The second sub-layer 242 is disposed on the side of the first sub-layer 241 facing away from the cover plate 10. The modulus of the second sub-layer 242 is greater than that of the first sub-layer 241. The first sub-hole 201 penetrates the adhesive layer 21 and the display panel 23, and the second sub-hole 202 penetrates both the first sub-layer 241 and the second sub-layer 242. The sidewall of the opening of the second sub-hole 202 on the first sub-layer 241 is flush with the sidewall of the first sub-hole 201, and the opening of the second sub-hole 202 on the second sub-layer 242 is larger than the opening of the second sub-hole 202 on the first sub-layer 241.

[0121] The first sublayer 241 can be a backsheet layer. The material of the backsheet layer includes, but is not limited to, one or more of the following: silica, polyester resin, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene terephthalate, polyimide, or polyurethane. The backsheet layer can prevent the display layer from being damaged by external forces and can block water and oxygen.

[0122] The material of the second sub-layer 242 can be a metal layer, but is not limited to this. The second sub-layer 242 has a certain degree of rigidity, which can provide back support and protection for the display panel 23, making the back of the display panel 23 less susceptible to impact damage. The modulus of the second sub-layer 242 is greater than that of the first sub-layer 241. For example, the material of the second sub-layer 242 can be stainless steel, copper, aluminum, etc.

[0123] In the above embodiments, such as Figure 4 As shown, the first sub-hole 201 is a hole with a uniform diameter, and the second sub-hole 202 is a hole with a non-uniform diameter. A uniform diameter means that the inner sidewalls of the hole are flush. A non-uniform diameter means that the hole is a stepped hole. A stepped hole has at least two diameter sizes, and the diameter increases along the direction away from the cover plate 10. For example... Figure 4 In the middle, the second sub-hole 202 is a stepped hole.

[0124] The first sub-hole 201 is located within the adhesive layer 21 and the display panel 23, and the second sub-hole 202 is located within the first sub-layer 241 and the second sub-layer 242.

[0125] Optionally, such as Figure 5 As shown, a cross-sectional view of another display device 1 is presented. Figure 5 The display device 1 in Figure 4 The difference in display device 1 lies in the shape of the second sub-hole 202 and the shape of the gasket 30. For example... Figure 5 As shown, the second sub-hole 202 is a stepped hole. The diameter of the second sub-hole 202 closer to the first sub-hole 201 is smaller than the diameter of the second sub-hole 202 farther from the first sub-hole 201, and the minimum opening of the second sub-hole 202 is larger than the opening of the first sub-hole 201.

[0126] The interfaces between different apertures in the stepped apertures are coplanar with the interfaces between two adjacent film layers of the display module 20. This means that apertures with uniform apertures in the stepped apertures are located within one or more film layers. When apertures with uniform apertures in the stepped apertures are located within one film layer, the depth of the aperture is equal to the thickness of that film layer; when apertures with uniform apertures in the stepped apertures are located within multiple film layers, the depth of the aperture is equal to the thickness of those multiple film layers. This design avoids the interfaces between apertures of different apertures located within the same film layer, which could lead to stress within the film layer and cause cracks.

[0127] By setting the through hole 20a to include multiple stepped holes, the support reliability at the sidewall of the through hole 20a can be further improved, and the risk of marks appearing on the cover plate 10 can be reduced.

[0128] Optionally, such as Figure 5 As shown, the support layer 24 may include a first sublayer 241, a second sublayer 242, and a third sublayer 243, and the materials of the first sublayer 241, the second sublayer 242, and the third sublayer 243 may be different.

[0129] The opening sizes of the second sub-holes 202 on the first sub-layer 241, the second sub-layer 242, and the third sub-layer 243 are all different. The first sub-layer 241, the second sub-layer 242, and the third sub-layer 243 can each have holes, and then be bonded together to form the support layer 24.

[0130] The first sublayer 241 and the second sublayer 242 can be configured as described in the above embodiments. The third sublayer 243 can be made of the same or different material as the first sublayer 241 and the second sublayer 242. The third sublayer 243 can be a carbon fiber layer, a metal layer, or a flexible material layer.

[0131] like Figures 2 to 5 As shown, in all the embodiments described above, the display module 20 may further include a polarizer 22, which may be disposed between the adhesive layer 21 and the display panel 23. The polarizer 22 can be used to reduce the reflection of ambient light by the display module 20 and improve the glare problem of the display module 20.

[0132] The adhesive layer 21, polarizer 22, and display panel 23 can be formed using the same process to create the through hole 20a, thereby simplifying the manufacturing process of the display module 20.

[0133] In the embodiments of this application, the display device 1 can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0134] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0135] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0136] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0137] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display device, characterized in that, include: Cover plate; The display module is disposed on one side surface of the cover plate, and the display module is provided with a through hole that penetrates the display module along the thickness direction of the display module; A gasket is disposed within the through hole, the thickness of the gasket being configured to be less than the depth of the through hole, and the outer peripheral dimension of the gasket being configured to be less than the inner diameter of the through hole, so as to form an circumferential gap between the sidewall of the gasket and the sidewall of the through hole. The filling portion, at least partially being a curable adhesive, fills at least a portion of the gap between the gasket and the display module, and at least partially fills the gap between the sidewall of the through hole and the sidewall of the gasket, in order to compensate for the dimensional difference between the thickness of the gasket and the depth of the through hole.

2. The display device according to claim 1, characterized in that, The display module includes an adhesive layer, a display panel, and a support layer stacked together, with the adhesive layer disposed between the display panel and the cover plate; The through-hole penetrates the adhesive layer, the display panel, and the support layer. The filling portion includes a first adhesive portion and a second adhesive portion. The first adhesive portion fills the gap between the gasket and the cover plate, and the second adhesive portion at least fills the gap between the adhesive layer and the sidewall of the display panel and the sidewall of the gasket.

3. The display device according to claim 2, characterized in that, The display device further includes a middle frame disposed on the side of the display module opposite to the cover plate; The sidewall of the opening of the through hole on the support layer is flush with the sidewall of the opening of the through hole on the display panel, and the end face of the gasket away from the cover plate is bonded to the middle frame through the third adhesive part. The third adhesive portion is made of a different material than the first adhesive portion.

4. The display device according to claim 3, characterized in that, The second adhesive portion fills the gap between the sidewall of the through hole and the sidewall of the gasket, and at least covers a portion of the opening edge of the through hole.

5. The display device according to claim 2, characterized in that, The opening of the through hole on the display panel and the adhesive layer is a first sub-hole, and the opening of the through hole on the support layer is a second sub-hole. At least a portion of the second sub-holes on the support layer are larger than the first sub-holes, and the second sub-holes increase in size along the direction of the support layer away from the cover plate. The gasket includes a first sub-part corresponding to the first sub-hole and a second sub-part corresponding to the second sub-hole, wherein the size of the second sub-part is larger than the size of the first sub-part in the same direction; The first adhesive portion is provided between the first sub-part and the cover plate, and the second adhesive portion is provided between the sidewall of the first sub-part and the sidewall of the first sub-hole. The second adhesive portion extends along the sidewall of the through hole and at least fills part of the gap between the sidewall of the second sub-part and the sidewall of the second sub-hole.

6. The display device according to claim 5, characterized in that, The thickness of the second adhesive portion within the second sub-hole is less than the depth of the second sub-hole, and the end face of the second sub-portion facing away from the cover plate is flush with the surface of the display module facing away from the cover plate.

7. The display device according to claim 6, characterized in that, The display device further includes a middle frame disposed on the side of the display module opposite to the cover plate; The end face of the second sub-part facing away from the cover plate and the surface of the display module facing away from the cover plate are both bonded to the middle frame by a third adhesive part, the material of which is different from that of the first adhesive part.

8. The display device according to claim 5, characterized in that, The support layer includes a first sub-layer and a second sub-layer stacked together. The second sub-layer is disposed on the side of the first sub-layer facing away from the cover plate. The modulus of the second sub-layer is greater than that of the first sub-layer. The sidewall of the opening of the second sub-hole on the first sub-layer is flush with the sidewall of the opening of the first sub-hole. The opening of the second sub-hole on the second sub-layer is larger than that of the first sub-hole.

9. The display device according to claim 5, characterized in that, The support layer includes a first sub-layer, a second sub-layer, and a third sub-layer stacked sequentially. The third sub-layer is disposed on the side of the second sub-layer opposite to the first sub-layer. The opening of the second sub-hole on the third sub-layer is larger than the opening of the second sub-hole on the second sub-layer, and the opening of the second sub-hole on the second sub-layer is larger than the opening of the first sub-hole on the first sub-layer.

10. The display device according to any one of claims 2 to 9, characterized in that, The second adhesive part is a curable adhesive, and the first adhesive part is a curable adhesive or an optical adhesive.

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