Display device

Abstract

The invention 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 the surface of one side of the cover plate in a contact mode, a through hole is formed in the display module, and the through hole penetrates through the display module in 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, and a gap is formed between the side wall of the gasket and the side wall of the through hole; the filling part at least 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, the gap is formed between the side wall of the gasket and the side wall of the through hole, and the filling part is adopted to fill part of the gap between the gasket and the display module, so that the filling part can be used for compensating the offset between the thickness of the gasket and the depth of the through hole; and the cover plate is prevented from being extruded to generate marks due to mismatching between the thickness of the gasket and the depth of the through hole.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display technology is a new display technology that has gradually attracted people's attention for its unique advantages such as low power consumption, high saturation, fast response time and wide viewing angle, especially the gradual development and application of foldable display devices.

[0003] Folding display devices generally need to install a variety of sensors, and hole areas need to be set in the areas corresponding to the sensors. In order for the hole area to meet the transmittance requirements, it is usually necessary to dig holes in the film layers other than the outermost film layer (such as the cover plate). After digging the holes, the hole area will have a problem of poor support. In the related technology, an optical gasket is set in the hole area to improve the support of the hole area. However, there is a process tolerance in the thickness of the optical gasket. When the thickness of the optical gasket does not match the depth of the hole area, the extrusion of the optical gasket and the cover plate can easily cause marks on the cover plate.

[0004] Therefore, it is urgent to improve the above technical problems. Summary of the invention

[0005] The embodiment of the present application provides a display device to improve the technical problem that when the thickness of the optical gasket in the hole area has a process tolerance and the thickness of the optical gasket does not match the depth of the hole area, the optical gasket and the cover plate are squeezed to easily cause marks on the cover plate.

[0006] In order to achieve the above object, the present application provides a display device, including:

[0007] Cover plate;

[0008] A display module, contacting and arranged on one side surface of the cover plate, wherein the display module is provided with a through hole, and the through hole penetrates the display module along the thickness direction of the display module;

[0009] A gasket is disposed in the through hole, wherein the thickness of the gasket is smaller than the depth of the through hole, and a gap is provided between the side wall of the gasket and the side wall of the through hole;

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

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

[0012] Among them, the through hole passes through the adhesive layer, the display panel and the supporting layer, and the filling part includes a first glue part and a second glue part, the first glue part fills the gap between the gasket and the cover plate, and the second glue part at least fills the gap between the adhesive layer and the side wall of the display panel and the side wall of the gasket.

[0013] Optionally, the display device further comprises a middle frame arranged on a side of the display module away from the cover plate;

[0014] The side wall of the opening of the through hole on the support layer is flush with the side wall of the opening of the through hole on the display panel, and the end surface of the gasket facing 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 material different from that of the first adhesive portion.

[0016] Optionally, the second adhesive portion fills a gap between a side wall of the through hole and a side wall of the gasket, and covers at least a portion of an 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 supporting layer is a second sub-hole, the second sub-hole on at least part of the supporting layer is larger than the first sub-hole, and the second sub-hole increases in the direction in which the supporting layer is away from the cover plate;

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

[0019] The first glue portion is arranged between the first sub-portion and the cover plate, the second glue portion is arranged between the side wall of the first sub-portion and the side wall of the first sub-hole, and the second glue portion extends along the side wall of the through hole to at least partially fill the gap between the side wall of the second sub-portion and the side wall of the second sub-hole.

[0020] Optionally, the thickness of the second adhesive portion in the second sub-hole is smaller than the depth of the second sub-hole, and the end surface 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 comprises a middle frame arranged on a side of the display module away from the cover plate;

[0022] The end surface 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 through a third adhesive part, and the third adhesive part is made of a different material from the first adhesive part.

[0023] Optionally, the supporting layer includes a stacked first sublayer and a second sublayer, the second sublayer is arranged on the side of the first sublayer away from the cover plate, the modulus of the second sublayer is greater than the modulus of the first sublayer, the side wall of the opening of the second subhole on the first sublayer is flush with the side wall of the opening of the first subhole, and the opening of the second subhole on the second sublayer is larger than the first subhole.

[0024] Optionally, the supporting layer includes a first sublayer, a second sublayer and a third sublayer stacked in sequence, the third sublayer is arranged on the side of the second sublayer facing away from the first sublayer, the opening of the second subhole on the third sublayer is larger than the opening of the second subhole on the second sublayer, and the opening of the second subhole on the second sublayer is larger than the opening of the first subhole on the first sublayer.

[0025] Optionally, the second glue part is curable glue, and the first glue part is curable glue or optical glue.

[0026] In the display device of the embodiment of the present application, by making the thickness of the gasket smaller than the depth of the through hole, a gap is set between the side wall of the gasket and the side wall 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, so that the filling part can be used to compensate for the difference between the thickness of the gasket and the depth of the through hole, thereby avoiding the mismatch between the thickness of the gasket and the depth of the through hole, which causes the cover plate to be squeezed and produce marks.

[0027] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0029] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0030] Figure 1 is a schematic diagram of a top view of a display device provided in an exemplary embodiment of the present disclosure;

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

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

[0033] Figure 4 yes Figure 1 Another schematic diagram of the cross-section structure at CC in the middle;

[0034] Figure 5 yes Figure 1 Another schematic diagram of the cross-section structure at CC in the middle;

[0035] FIG. 6A to FIG. 6C yes Figure 2 A process flow chart of a display device in;

[0036] Fig. 7A yes Figure 3 A process flow chart of a display device in;

[0037] FIG. 8A to FIG. 8D yes Figure 4 Flow chart of the process of display device in FIG.

[0038] Description of reference numerals:

[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-portion 31, second sub-portion 32;

[0043] Filling part 40, first glue part 41, second glue part 42, third glue part 43;

[0044] Middle frame 50;

[0045] Glue 61;

[0046] Pressure head 81. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

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

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

[0050] The cover plate 10 is a flexible material, such as one of polyimide (PI), polycarbonate (PC), polynorbornene (PNB), polyethylene terephthalate (PET), etc. Since 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 a 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 20 a , and the through hole 20 a penetrates the display module 20 along the thickness direction of the display module 20 , that is, the depth of the through hole 20 a is the same as the thickness of the display module 20 .

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

[0054] In some embodiments, the through hole 20a can be arranged corresponding to a sensor (not shown in the figure), and the sensor can be arranged 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 passing the through hole 20a through the display module 20, it is possible to prevent the film layer of the display module 20 from blocking the light and affecting the function of the sensor.

[0055] To compensate for the poor support of the film layer at the through hole 20a, a gasket 30 is provided in the through hole 20a for support. The gasket 30 is a transparent material, such as one or a composite material of polycarbonate, polymethyl methacrylate (PMMA), glass, etc.

[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 side wall of the gasket 30 and the side wall of the through hole 20a. Through the above arrangement, it is possible to prevent the gasket 30 from protruding from the through hole 20a and squeezing the film layer such as the cover plate 10 to form an imprint. The filling portion 40 can fill the gap between the gasket 30 and the through hole 20a.

[0057] It should be noted that at least part of the filling portion 40 is curable glue, such as light-curing glue, heat-curing glue, etc. Alternatively, at least part of the filling portion 40 is optical clear resin (OCR), UV glue, etc. At least part of the material in the filling portion 40 is in liquid form during filling, so it can flow freely and fill the gap between the gasket 30 and the side wall of the through hole 20a.

[0058] The filling portion 40 can not only fix the gasket 30 to 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 thickness of the gasket 30 from not matching the depth of the through hole 20a and squeezing the cover plate 10 to form an imprint.

[0059] The curable glue and the optically transparent glue in the filling portion 40 may be formed by a dispensing process, but is not limited thereto.

[0060] Alternatively, if Figures 2 to 5 As shown, the display module 20 includes a stacked adhesive layer 21, a display panel 23 and a support layer 24, wherein the adhesive layer 21 is disposed between the display panel 23 and the cover plate 10; wherein the through hole 20a penetrates the adhesive layer 21, the display panel 23 and the support layer 24, and the filling portion 40 includes a first adhesive portion 41 and a second adhesive portion 42, and 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 side wall of the adhesive layer 21 and the display panel 23 and the side wall of the gasket 30.

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

[0062] In some embodiments, the opening sizes of the through hole 20a on the adhesive layer 21 and the display panel 23 are the same, so that the same process can be used to open holes in 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 arranged outside the display area AA. The display area AA is used to display images, and the display area AA is provided with a plurality of sub-pixels, such as red sub-pixels, green sub-pixels, and blue sub-pixels, so as to achieve color display. The non-display area NA is provided with a driving circuit, such as a gate driving circuit, etc., and the driving circuit is used to drive the sub-pixel display.

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

[0065] Specifically, the display panel 23 may include a flexible substrate, an array layer, a light-emitting layer, etc. stacked in sequence. The material of the flexible substrate may be one of polyimide (PI), polycarbonate (PC), polynorbornene (PNB), polyethylene terephthalate (PET), etc. The array layer is arranged on the flexible substrate, and the array layer is provided with a driving circuit, and the driving circuit is used to drive the 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 the cathode are electrically connected to the driving circuit. Among them, the anode is used to provide holes, and the anode is used to provide electrons, and the holes and electrons are compounded in the light-emitting material layer to emit light.

[0066] The display panel 23 may further include an encapsulation layer, which is disposed on a surface of the light-emitting layer facing away from the flexible substrate. The encapsulation layer may protect the light-emitting layer to prevent water and oxygen from entering the light-emitting layer and affecting the life of the light-emitting layer. The encapsulation layer may be formed by one or more organic layers and one or more inorganic layers stacked alternately. For example, the organic layer may be a single layer or multiple layers formed by any one of polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The inorganic layer may be a single layer or multiple layers of metal oxide or metal nitride, such as silicon nitride, aluminum oxide, silicon oxide, etc.

[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. To prevent the adhesive layer 21 from blocking the image of the display panel 23, the adhesive layer 21 is a transparent adhesive material, such as optically clear adhesive (OCA), 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 away from the light emitting surface of the display panel 23. The support layer 24 may be a laminate of one or more of a flexible material and a rigid material. The flexible material may be polyethylene terephthalate, polyimide, polycarbonate, carbon fiber, etc. The rigid material may be stainless steel, titanium, aluminum, copper, etc. The support layer 24 is used to support and protect the display panel 23 so that the back of the display panel 23 is not easily damaged by impact.

[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 glue portion 41 fills the gap between the gasket 30 and the cover plate 10. The second glue portion 42 fills the gap between the side wall of the gasket 30 and the side wall of the adhesive layer 21 and the display panel 23. That is to say, the first glue portion 41 is located between the gasket 30 and the cover plate 10, and the second glue portion 42 is located between the side wall of the gasket 30 and the side wall of the through hole 20a.

[0071] Alternatively, if Figure 2 As shown, the display device 1 also includes a middle frame 50 arranged on the side of the display module 20 away from the cover plate 10; the side wall of the opening of the through hole 20a on the supporting layer 24 is flush with the side wall of the opening of the through hole 20a on the display panel 23, the end surface of the gasket 30 close to the cover plate 10 is bonded to the cover plate 10 through the first glue part 41, and the end surface of the gasket 30 away from the cover plate 10 is bonded to the middle frame 50 through the third glue part 43; wherein, the material of the third glue part 43 is different from that of the first glue part 41.

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

[0073] In some embodiments, Figure 2 As shown, the first adhesive part 41 may be optical adhesive, and the second adhesive part 42 and the third adhesive part 43 may be curable adhesive.

[0074] In some embodiments, the thickness of the first adhesive portion 41 may be 15 micrometers to 50 micrometers. For example, the thickness of the third adhesive portion 43 is 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 spacer 30 may be 15 micrometers to 100 micrometers smaller than the depth of the through hole 20 a , thereby reserving a filling space for the filling part 40 .

[0076] In some embodiments, the distance between the end surface 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] See also FIG. 6A to FIG. 6B , showing Figure 2 Detailed description of the process flow chart of the display device 1.

[0078] like Fig. 6A As shown, a through hole 20a is formed on the display module 20. The cover plate 10 is 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. Through the above configuration, the gasket 30 and the cover plate 10 can be pre-fixed by the first adhesive portion 41. At the same time, the modulus of the first adhesive portion 41 is smaller than that of the gasket 30, thereby preventing the gasket 30 from directly contacting the cover plate 10 and causing marks on the cover plate 10.

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

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

[0082] See also Figure 2 After the above process, the part of the glue 61 located in the gap is cured to form the second glue part 42. The part of the glue 61 located on the side of the gasket 30 away from the cover plate 10 is cured to form the third glue part 43, which can be bonded to the middle frame 50.

[0083] That is to say, the third glue part 43 and the second glue part 42 can be formed by the same glue dispensing process. Through the above setting, 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 glue part 43 can realize the bonding of the gasket 30 and the middle frame 50, thereby simplifying the manufacturing process of the display device 1.

[0084] Alternatively, if Figure 2 As shown, the second adhesive portion 42 fills the gap between the side wall of the through hole 20 a and the side wall of the gasket 30 , and the second adhesive portion 42 at least covers a portion of the opening edge of the through hole 20 a .

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

[0086] Alternatively, if Figure 3 As shown, Figure 3 A cross-sectional view of yet another display device 1 is shown. Figure 3 The display device 1 and Figure 2 The difference between the display device 1 in the embodiment of the present invention lies in the bonding method of the gasket 30 to the cover plate 10 and the middle frame 50. The end surface of the gasket 30 close to the cover plate 10 is bonded to the cover plate 10 through the first adhesive portion 41, and the end surface of the gasket 30 away from the cover plate 10 is bonded to the middle frame 50 through the third adhesive portion 43.

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

[0088] The end surface of the gasket 30 facing away from the cover plate 10 is bonded to the middle frame 50 via the third adhesive portion 43. Through the above arrangement, the manufacturing process of the display device 1 can be simplified.

[0089] In some embodiments, Figure 3 As shown, the third adhesive part 43 may be optical adhesive, and the first adhesive part 41 and the second adhesive part 42 may be curable adhesive.

[0090] Specifically, Fig. 7AAs shown, a through hole 20a is formed on the display module 20. The cover plate 10 is attached to the display module 20. Glue 61 is set in the through hole 20a, and then the gasket 30 attached to the middle frame 50 is placed in the through hole 20a after being aligned with the through hole 20a. By pre-fixing the gasket 30 on the middle frame 50, the glue 61 can overflow along the side wall of the through hole 20a by pressing the middle frame 50, and the overflowed glue 61 can be directly bonded to the middle frame 50, simplifying the process.

[0091] Please combine Fig. 7A and Figure 3 , the glue 61 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, and the glue 61 is solidified to form a first glue portion 41 and a second glue portion 42. The first glue portion 41 is located between the gasket 30 and the cover plate 10, and the second glue portion 42 is located between the side wall of the gasket 30 and the side wall of the through hole 20a, and the second glue portion 42 overflows to the opening edge of the through hole 20a. The modulus of the first glue portion 41 is smaller than that of the gasket 30, so as to prevent the gasket 30 from directly contacting the cover plate 10, which would cause marks on the cover plate 10.

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

[0093] Optionally, combined Fig. 7A and Figure 3 The second adhesive portion 42 at least covers a portion of the opening edge of the through hole 20 a , and the second adhesive portion 42 and the third adhesive portion 43 are made of different materials.

[0094] The glue 61 overflows the through hole 20a, 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, and improve the reliability of fixing 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 side walls of the through hole 20a are flush. At this time, 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 to reduce the assembly process. The bonding of the display module 20 and the middle frame 50 by dispensing can improve the structure and stability of the whole machine 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 to improve the impact resistance and support performance of the display device 1.

[0096] Alternatively, if 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 supporting layer 24 is a second sub-hole. The second sub-hole 202 on at least part of the supporting layer 24 is larger than the first sub-hole 201, and the second sub-hole 202 increases in the direction of the supporting layer 24 away from the cover plate 10; the gasket 30 includes a first sub-portion 31 corresponding to the first sub-hole 201 and a second sub-portion 32 corresponding to the second sub-hole 202. In the same direction, the size of the second sub-portion 32 is larger than that of the first sub-portion 31; wherein a first glue portion 41 is arranged between the first sub-portion 31 and the cover plate 10, a second glue portion 42 is arranged between the side wall of the first sub-portion 31 and the side wall of the first sub-hole 201, and the second glue portion 42 extends along the side wall of the through hole 20a to at least fill a part of the gap between the side wall of the second sub-portion 32 and the side wall 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 a larger opening is located on the side of the first sub-hole 201 with a 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 size in the horizontal direction, the size of the first sub-hole 201 refers to Figure 4 The horizontal dimension of the center.

[0099] Accordingly, if Figure 4 As shown, the gasket 30 includes a first sub-portion 31 corresponding to the first sub-hole 201 and a second sub-portion 32 corresponding to the second sub-hole 202, and the size of the second sub-portion 32 is larger than the size of the first sub-portion 31. That is to say, the side wall of the second sub-portion 32 is spaced apart from the side wall of the first sub-portion 31, and the side wall of the second sub-portion 32 is located on the side of the side wall of the first sub-portion 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 named as the first gap, the second gap, and the third gap, respectively. Among them, the first gap and the second gap are formed between the first sub-section 31 and the first sub-hole 201. The first gap is the gap between the end surface of the first sub-section 31 close to the cover plate 10 and the cover plate 10 close to the first sub-section 31, and the first glue part 41 is formed in the first gap. The second gap is the gap between the side wall of the first sub-section 31 and the side wall of the first sub-hole 201. The third gap and the fourth gap are formed between the second sub-section 32 and the second sub-hole 202. The third gap is located between the end surface of the second sub-section 32 close to the first sub-section 31 and the bottom wall of the second sub-hole 202 close to the second sub-section 32, and the fourth gap is located between the side wall of the second sub-section 32 and the side wall of the second sub-hole 202. The second glue part 42 is formed in the second gap, the third gap, and the fourth gap.

[0101] The bottom wall of the second sub-hole 202 close to the second sub-portion 32 refers to a side surface of the second sub-hole 202 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 may be 0.2 mm to 1 mm.

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

[0104] In some embodiments, the thickness of the first sub-portion 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-portion 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 glue part 41 may be 50 micrometers less than the depth of the second sub-hole 202 .

[0107] See also FIG. 8A to FIG. 8C , showing Figure 4 Detailed description of the process flow chart of the display device 1.

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

[0109] like Figure 8B As shown, glue 61 may be disposed in the through hole 20 a.

[0110] like Figure 8CAs shown, the gasket 30 is placed in the through hole 20a, and the press head 81 is used to fix the gasket 30. 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 in the second sub-hole 202 is less than or equal to the depth of the second sub-hole 202 , and the end surface 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 glue portion 42 in the second sub-hole 202 is less than or equal to the depth of the second sub-hole 202 , which means that the glue 61 cannot completely fill the fourth gap, thereby preventing the glue 61 from overflowing the through hole 20a and affecting the flatness of the opening edge of the through hole 20a.

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

[0114] like Fig.8D As shown, the pressing head 81 is removed, and the middle frame 50 is bonded to the gasket 30 and the display module 20 through the third adhesive portion 43 .

[0115] like Figure 4 As shown, the end surface 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. Through the above arrangement, the end surface 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 they can be bonded to the middle frame 50, avoiding the thickness difference between the gasket 30 and the display module 20, which would cause marks 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 pressure head 81 with a flat surface can be used to apply pressure to the gasket 30 .

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

[0118] Alternatively, if Fig.8D As shown, the display device 1 further includes a middle frame 50 disposed on a side of the display module 20 away from the cover plate 10 ; the end surface of the second sub-portion 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 via the third adhesive portion 43 .

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

[0120] Alternatively, if Figure 4 As shown, the support layer 24 includes a stacked first sublayer 241 and a second sublayer 242, the second sublayer 242 is disposed on the side of the first sublayer 241 away from the cover plate 10, the modulus of the second sublayer 242 is greater than the modulus of the first sublayer 241, the first subhole 201 penetrates the adhesive layer 21 and the display panel 23, and the second subhole 202 penetrates the first sublayer 241 and the second sublayer 242. The sidewall of the opening of the second subhole 202 on the first sublayer 241 is flush with the sidewall of the first subhole 201, and the opening of the second subhole 202 on the second sublayer 242 is greater than the opening of the second subhole 202 on the first sublayer 241.

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

[0122] The material of the second sublayer 242 may be a metal layer, but is not limited thereto. The second sublayer 242 has a certain rigidity, and can provide back support and protection for the display panel 23, so that the back of the display panel 23 is not easily damaged by impact. The modulus of the second sublayer 242 is greater than the modulus of the first sublayer 241. For example, the material of the second sublayer 242 may be stainless steel, copper, aluminum, etc.

[0123] In the above embodiment, if Figure 4 As shown, the first sub-hole 201 is a hole with uniform aperture, and the second sub-hole 202 is a hole with uneven aperture. Uniform aperture means that the side walls in the hole are flush. Uneven aperture means that the hole is a stepped hole. The aperture of the stepped hole has at least two sizes, and the aperture of the stepped hole increases in the direction away from the cover plate 10. Figure 4 In the embodiment, the second sub-hole 202 is a stepped hole.

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

[0125] Alternatively, if Figure 5 , a cross-sectional view of yet another display device 1 is shown. Figure 5 The display device 1 and Figure 4 The difference between the display device 1 in FIG. 1 and FIG. 2 is the shape of the second sub-hole 202 and the shape of the gasket 30. Figure 5 As shown, the second sub-hole 202 is a stepped hole, the aperture of the second sub-hole 202 close to the first sub-hole 201 is smaller than the aperture of the second sub-hole 202 away 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 interface of the stepped holes with different apertures is coplanar with the interface of two adjacent film layers of the display module 20. That is to say, the holes with uniform apertures in the stepped holes are located in one or more film layers. When the holes with uniform apertures in the steps are located in one film layer, the depth of the holes is equal to the thickness of the film layer; when the holes with uniform apertures in the steps are located in multiple film layers, the depth of the holes is equal to the thickness of the multiple film layers. Through the above arrangement, it is possible to avoid the interface of holes with different apertures being located in the same film layer, which may cause stress and cracks in the film layer.

[0127] By configuring the through hole 20 a to include a plurality of stepped holes, the support reliability at the side wall of the through hole 20 a can be further improved, and the risk of marks on the cover plate 10 can be reduced.

[0128] Alternatively, if 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 be opened separately, and then attached to form the support layer 24 .

[0130] The configuration of the first sublayer 241 and the second sublayer 242 may refer to the above embodiments. The third sublayer 243 may be made of the same or different materials as the first sublayer 241 and the second sublayer 242. The third sublayer 243 may be made of carbon fiber, a metal layer or a flexible material layer.

[0131] like Figures 2 to 5 As shown, in all the above embodiments, 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 may 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 , the polarizer 22 , and the display panel 23 may be formed into the through hole 20 a by the same process, thereby simplifying the manufacturing process of the display module 20 .

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

[0134] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0135] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0136] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0137] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display device, characterized in that: include: Cover plate; A display module, contacting and arranged on one side surface of the cover plate, wherein the display module is provided with a through hole, and the through hole penetrates the display module along the thickness direction of the display module; A gasket is disposed in the through hole, wherein the thickness of the gasket is smaller than the depth of the through hole, and a gap is provided between the side wall of the gasket and the side wall of the through hole; The filling portion at least fills a portion of the gap between the gasket and the display module.

2. The display device according to claim 1, characterized in that The display module comprises a stacked adhesive layer, a display panel and a support layer, wherein the adhesive layer is arranged between the display panel and the cover plate; Among them, the through hole passes through the adhesive layer, the display panel and the supporting layer, and the filling part includes a first glue part and a second glue part, the first glue part fills the gap between the gasket and the cover plate, and the second glue part at least fills the gap between the adhesive layer and the side wall of the display panel and the side wall of the gasket.

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

4. The display device according to claim 3, characterized in that: The second adhesive portion fills a gap between a side wall of the through hole and a side wall of the gasket, and covers at least a portion of an 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 supporting layer is a second sub-hole. The second sub-hole on at least part of the supporting layer is larger than the first sub-hole, and the second sub-hole increases in the direction in which the supporting layer is away from the cover plate; The gasket comprises a first sub-portion corresponding to the first sub-hole and a second sub-portion corresponding to the second sub-hole, and in the same direction, the size of the second sub-portion is larger than the size of the first sub-portion; The first glue portion is arranged between the first sub-portion and the cover plate, the second glue portion is arranged between the side wall of the first sub-portion and the side wall of the first sub-hole, and the second glue portion extends along the side wall of the through hole to at least partially fill the gap between the side wall of the second sub-portion and the side wall of the second sub-hole.

6. The display device according to claim 5, characterized in that: The thickness of the second adhesive portion in the second sub-hole is smaller than the depth of the second sub-hole, and the end surface 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 comprises a middle frame arranged on a side of the display module away from the cover plate; The end surface 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 through a third adhesive part, and the third adhesive part is made of a different material from the first adhesive part.

8. The display device according to claim 5, characterized in that The supporting layer includes a stacked first sublayer and a second sublayer, the second sublayer is arranged on the side of the first sublayer away from the cover plate, the modulus of the second sublayer is greater than the modulus of the first sublayer, the side wall of the opening of the second subhole on the first sublayer is flush with the side wall of the opening of the first subhole, and the opening of the second subhole on the second sublayer is larger than the first subhole.

9. The display device according to claim 5, characterized in that: The supporting layer includes a first sublayer, a second sublayer and a third sublayer stacked in sequence, the third sublayer is arranged on the side of the second sublayer away from the first sublayer, the opening of the second subhole on the third sublayer is larger than the opening of the second subhole on the second sublayer, and the opening of the second subhole on the second sublayer is larger than the opening of the first subhole on the first sublayer.

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

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