A display device

Abstract

The embodiment of the present disclosure provides a display device, comprising a display module and a backlight module disposed on a side of the display module away from the display side, the backlight module being provided with a camera hole, and a blind hole being provided at a position of the display module corresponding to the camera hole; the backlight module being provided with a light shielding ring, the light shielding ring extending into the blind hole; or / and a light shielding layer being provided on the hole wall of the blind hole. The display device of the embodiment of the present disclosure can prevent light emitted from the circumferential side wall of the blind hole from entering the camera hole by providing a light shielding ring or a light shielding layer provided on the hole wall of the blind hole.

Description

Technical Field

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

[0002] In some technologies, the backlight module of the display device is provided with a camera hole, and the camera function can be realized by arranging the camera module in the camera hole. In order to facilitate the entry of external light into the camera hole, the display module of the display device is provided with a blind hole at a position corresponding to the camera hole, but light leakage is prone to occur at the wall of the blind hole (light emitted from the wall of the blind hole enters the camera hole), which affects the shooting effect of the camera module. Summary of the invention

[0003] The embodiments of the present disclosure provide a display device that can prevent light leakage from a blind hole of a display module.

[0004] In some exemplary embodiments, the display device of the embodiment of the present disclosure includes a display module and a backlight module provided on a side of the display module away from the display side, the backlight module is provided with a camera hole, and a blind hole is provided at a position of the display module corresponding to the camera hole;

[0005] The backlight module comprises a back plate, an optical film group stacked on a side of the back plate facing the display module, and a first light shielding layer;

[0006] The back plate includes a back plate body, the back plate body is provided with a first through hole, the back plate body is provided with a bending portion extending toward the side where the display module is located at the periphery of the first through hole, the back plate further includes a rubber frame integrally connected to the bending portion and arranged along the circumference of the bending portion, and the first through hole, the bending portion and the rubber frame form the camera hole;

[0007] The optical film assembly is provided with a second through hole to avoid the bending portion and the rubber frame;

[0008] The first light shielding layer is arranged around the camera hole and is arranged on the circumferential edge of the surface of the optical film group facing the display module close to the second through hole and the surface of the rubber frame facing the display module;

[0009] The backlight module further comprises a light shielding ring, which is arranged on the first light shielding layer or the plastic frame and extends into the blind hole.

[0010] The display device of the embodiment of the present disclosure can prevent light emitted from the circumferential side wall of the blind hole from entering the camera hole by setting a light shielding ring, thereby ensuring the normal operation of the camera module in the camera hole. The first light shielding layer and the rubber frame can prevent light emitted from the optical film group from entering the camera hole.

[0011] In some other exemplary embodiments, the display device of the embodiment of the present disclosure includes a display module and a backlight module provided on a side of the display module away from a display side, the backlight module is provided with a camera hole, and a blind hole is provided at a position of the display module corresponding to the camera hole;

[0012] The backlight module comprises a back plate, an optical film group stacked on a side of the back plate facing the display module, and a first light shielding layer;

[0013] The back plate includes a back plate body, the back plate body is provided with a first through hole, the back plate body is provided with a bending portion extending toward the side where the display module is located at the periphery of the first through hole, the back plate further includes a rubber frame integrally connected to the bending portion and arranged along the circumference of the bending portion, and the first through hole, the bending portion and the rubber frame form the camera hole;

[0014] The optical film assembly is provided with a second through hole to avoid the bending portion and the rubber frame;

[0015] The first light shielding layer is arranged around the camera hole and is arranged on the circumferential edge of the surface of the optical film group facing the display module close to the second through hole and the surface of the rubber frame facing the display module;

[0016] A second light shielding layer is provided on the hole wall of the blind hole.

[0017] The display device of the embodiment of the present disclosure can prevent light emitted from the circumferential side wall of the blind hole from entering the camera hole by setting the second light shielding layer, thereby ensuring the normal operation of the camera module in the camera hole. The first light shielding layer and the rubber frame can prevent light emitted from the optical film group from entering the camera hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation on the technical solution of the present disclosure. The shapes and sizes of the components in the accompanying drawings do not reflect the actual proportions and are only intended to illustrate the contents of the present disclosure.

[0019] Figure 1 Schematic diagrams of planar structures of display devices of some exemplary embodiments;

[0020] Figure 2a In some exemplary embodiments Figure 1 AA cross-sectional structural schematic diagram of a display device;

[0021] Figure 2b for Figure 2a Schematic diagram of the local structure;

[0022] Figure 2c is a schematic diagram of a partial cross-sectional structure of a backlight module in some other exemplary embodiments;

[0023] Figure 2d is a schematic diagram of a partial cross-sectional structure of a backlight module in some further exemplary embodiments;

[0024] Figure 3a In some other exemplary embodiments Figure 1 AA cross-sectional structural schematic diagram of a display device;

[0025] Figure 3b for Figure 3a Schematic diagram of the local structure;

[0026] Figure 4a In some other exemplary embodiments Figure 1 AA cross-sectional structural schematic diagram of a display device;

[0027] Figure 4b for Figure 4a Schematic diagram of the local structure;

[0028] Figure 4c for Figure 4a Another partial structural schematic diagram of;

[0029] Figure 5a In some further exemplary embodiments Figure 1 AA cross-sectional structural schematic diagram of a display device;

[0030] Figure 5b for Figure 5a Schematic diagram of the preparation process of the display device;

[0031] Figure 6a In some further exemplary embodiments Figure 1 AA cross-sectional structural schematic diagram of a display device;

[0032] Figure 6b In some exemplary embodiments Figure 6a A schematic structural diagram of a second polarizer in a display device;

[0033] Figure 6c In some other exemplary embodiments Figure 6a A schematic structural diagram of a second polarizer in a display device.

[0034] The accompanying drawings are marked as follows:

[0035] 10. display module, 11. cover plate, 12. adhesive layer, 13. first polarizer, 14. first substrate, 15. second substrate, 16. second polarizer, 17. light-shielding coating, 20. backlight module, 21. back plate, 22. optical film group, 23. first light-shielding layer, 24. light-shielding ring, 31. camera hole, 32. blind hole, 41. adhesive, 51. light-shielding material;

[0036] 101, display area, 102, non-display area, 131, third through hole, 161, fourth through hole, 162, blackened failed part of the second polarizer, 211, back plate body, 212, rubber frame;

[0037] 221, light guide plate, 222, reflective sheet, 223, diffuser, 224, first brightness enhancement sheet, 225, second brightness enhancement sheet, 226, second through hole of the optical film assembly;

[0038] 321, second light shielding layer;

[0039] 1021, a first non-display area, 1022, a second non-display area, 2111, a bending portion, 2120, a circular inner side surface of the rubber frame, 2121, a conical surface, 2122, a cylindrical surface. DETAILED DESCRIPTION

[0040] Those skilled in the art should understand that the technical solutions of the embodiments of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and all should be included in the scope of the claims of the present disclosure.

[0041] like Figure 1 As shown, Figure 1 The planar structure diagram of the display device of some exemplary embodiments, the display device includes a display area 101 and a non-display area 102, the non-display area 102 may include a first non-display area 1021 and a second non-display area 1022, the first non-display area 1021 may be arranged at the periphery of the display area 101, the second non-display area 1022 may be surrounded by the display area 101, and the second non-display area 1022 may be arranged near the edge of the display area 101. The second non-display area 1022 may be provided with a camera hole 31, and a camera module may be provided in the camera hole 31, such as a front camera module. The display device may be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0042] like Figure 2a As shown, Figure 2a In some exemplary embodiments Figure 1The AA cross-sectional structural schematic diagram of a display device, the display device includes a display module 10 and a backlight module 20 arranged on a side of the display module 10 away from the display side, the backlight module 20 is provided with a camera hole 31, and a blind hole 32 is provided at a position of the display module 10 corresponding to the camera hole 31.

[0043] The backlight module 20 includes a back plate 21 , an optical film group 22 stacked on a side of the back plate 21 facing the display module 10 , and a first light shielding layer 23 .

[0044] The back panel 21 includes a back panel body 211, the back panel body 211 is provided with a first through hole, the back panel body 211 is provided with a bending portion 2111 extending toward the side where the display module 10 is located at the periphery of the first through hole, the back panel 21 also includes a rubber frame 212 integrally connected to the bending portion 2111 and arranged along the circumference of the bending portion 2111, the first through hole, the bending portion 2111 and the rubber frame 212 form the camera hole 31.

[0045] The optical film assembly 22 defines a second through hole 226 for avoiding the bending portion 2111 and the plastic frame 212 .

[0046] The first light shielding layer 23 is disposed around the camera hole 31 and is disposed on the circumferential edge of the surface of the optical film assembly 22 facing the display module 10 close to the second through hole 226 and the surface of the plastic frame 212 facing the display module 10 .

[0047] The backlight module 20 further includes a light shielding ring 24, which is disposed on the first light shielding layer 23 or the plastic frame 212 ( Figure 2a In the example, the shading ring 24 is arranged on the first shading layer 23, and the shading ring 24 extends into the blind hole 32, and the surface of the shading ring 24 facing the display module 10 is in contact with the surface of the display module 10 exposed by the blind hole 32.

[0048] In this embodiment, Figure 2a As shown, Figure 2a The dotted line with an arrow in the middle indicates the emission path and direction of part of the light. After the light emitted by the backlight module 20 enters the display module 10, part of the light is emitted from the display side of the display module 10, and part of the light is emitted from the side wall of the blind hole 32 after being reflected and refracted inside the display module 10. By providing a light shielding ring 24, the light emitted from the circumferential side wall of the blind hole 32 can be prevented from entering the camera hole 31, thereby ensuring the normal operation of the camera module in the camera hole 31. The first light shielding layer 23 and the rubber frame 212 can prevent the light emitted from the optical film group 22 from entering the camera hole 31.

[0049] In some exemplary embodiments, Figure 2a As shown, the rubber frame 212 can wrap the bent portion 2111 along the circumference of the bent portion 2111, and the rubber frame 212 is annular, and the circumferential inner side surface 2120 of the rubber frame 212 can form the hole wall of the camera hole 31. The circumferential outer side surface of the rubber frame 212 is arranged opposite to the hole wall of the second through hole 226 of the optical film group 22, and there can be a gap between the circumferential outer side surface of the rubber frame 212 and the hole wall of the second through hole 226 of the optical film group 22. The rubber frame 212 covers the surface of the hole wall of the bent portion 2111 facing the second through hole 226 of the optical film group 22, which can avoid the influence of the reflection of the surface of the hole wall of the bent portion 2111 facing the second through hole 226 of the optical film group 22 on the display effect. Exemplarily, the plastic frame 212 and the back plate body 211 can be connected as one body through an injection molding process to form the camera hole 31 , and the circumferential inner side surface 2120 of the plastic frame 212 forms the hole wall of the camera hole 31 .

[0050] For example, Figure 2a As shown, the cross-sectional shape of the combined structure of the rubber frame 212 and the bent portion 2111 may be approximately trapezoidal, and the circumferential inner side surface 2120 of the rubber frame 212 may include a conical surface 2121 and a cylindrical surface 2122 connected to each other, the cylindrical surface 2122 is closer to the display module 10 than the conical surface 2121, the conical surface 2121 is connected to the cylindrical surface 2122 at the conical end, and the conical surface 2121 is away from the display module 10 at the flared end. The height of the cylindrical surface 2122 along the axial direction of the camera hole 31 is less than the height of the conical surface 2121 along the axial direction of the camera hole 31, and the height of the cylindrical surface 2122 along the axial direction of the camera hole 31 may be about 0.1 mm. The first end of the camera hole 31 is an end away from the display module 10, and the second end of the camera hole 31 is an end close to the display module 10. The aperture of the camera hole 31 gradually decreases from the first end to the second end of the camera hole 31 at the conical surface 2121 of the circumferential inner side surface 2120 of the plastic frame 212, and then remains unchanged at the cylindrical surface 2122 of the circumferential inner side surface 2120 of the plastic frame 212. The shape of the circumferential outer side surface of the plastic frame 212 may not be limited, for example, it may be a cylindrical surface or a conical surface.

[0051] In other embodiments, Figure 2c and Figure 2d As shown, Figure 2c is a schematic diagram of a partial cross-sectional structure of a backlight module in some other exemplary embodiments, Figure 2dIt is a schematic diagram of a partial cross-sectional structure of a backlight module in some other exemplary embodiments. The plastic frame 212 can be arranged on one side of the hole wall of the bent portion 2111 facing the second through hole 226 of the optical film group 22, and covers the end surface of the bent portion 2111 close to the display module 10. The surface of the hole wall of the bent portion 2111 away from the second through hole 226 of the optical film group 22 is not covered by the plastic frame 212, and the hole wall of the camera hole 31 is formed by the bent portion 2111 and the plastic frame 212. The portion of the rubber frame 212 that protrudes from one end of the bending portion 2111 close to the display module 10 is called the protruding portion of the rubber frame 212. The surface of the protruding portion of the rubber frame 212 that is away from the hole wall of the second through hole 226 of the optical film group 22 and the surface of the hole wall of the bending portion 2111 that is away from the second through hole 226 of the optical film group 22 together form the hole wall of the camera hole 31. Figure 2c and Figure 2d In the example of FIG. 1 , when the back panel body 211 and the plastic frame 212 are connected as one body by injection molding, the plastic frame 212 is prone to burrs and protrusions at the connection position P between the end of the bent portion 2111 close to the display module 10 and the plastic frame 212, which will affect the uniformity of the aperture of the camera hole 31 formed in the end. Figure 2c and Figure 2d For example, Figure 2a In the example, the bending portion 2111 is completely wrapped by the rubber frame 212, so that the hole wall of the camera hole 31 is completely formed by the circumferential inner side surface 2120 of the rubber frame 212. When the back panel body 211 and the rubber frame 212 are connected as a whole by the injection molding process, the circumferential inner side surface 2120 of the rubber frame 212 is not easy to form the burrs and protrusions, which can ensure the uniformity of the aperture of the camera hole 31 finally formed.

[0052] Figure 2c In the example, the bending portion 2111 is bent into a right angle, the cross-sectional shape of the combined structure of the rubber frame 212 and the bending portion 2111 can be a rectangle, and the aperture of the camera hole 31 remains unchanged along the axial direction of the camera hole 31. Figure 2dIn the example of , the bending portion 2111 is bent into an obtuse angle, the cross-sectional shape of the combined structure of the plastic frame 212 and the bending portion 2111 can be a trapezoid, and the aperture of the camera hole 31 gradually decreases from the end of the camera hole 31 away from the display module 10 to the end close to the display module 10. Among them, the cross-sectional shape of the combined structure of the plastic frame 212 and the bending portion 2111 is a trapezoid, which can increase the surface area of ​​the plastic frame 212 facing the display module 10 compared to a rectangle, thereby increasing the contact area between the first light shielding layer 23 and the plastic frame 212, so that the first light shielding layer 23 is not easily separated from the plastic frame 212, and the reliability of the attachment of the first light shielding layer 23 to the plastic frame 212 is ensured.

[0053] Figure 2d In the embodiment, the surface of the rubber frame 212 facing the display module 10 and the surface of a part of the hole wall forming the camera hole 31 form an acute angle, so that the intersection position of the surface of the rubber frame 212 facing the display module 10 and the surface of a part of the hole wall forming the camera hole 31 forms a sharp angle. The sharp angle position of the rubber frame 212 is actually a very small rounded corner after the rubber frame 212 is injection molded. In this way, the influence of the rounded corner on the tolerance of the aperture of the camera hole 31 formed in the injection molding process of the rubber frame 212 needs to be considered, and it is not easy to accurately control the aperture size of the camera hole 31 formed. Figure 2a In the example of FIG. 1 , a small cylindrical surface 2122 is provided at one end of the inner circumferential surface 2120 of the plastic frame 212 close to the display module 10, and the angle between the cylindrical surface 2122 and the surface of the plastic frame 212 facing the display module 10 is approximately a right angle. Figure 2d The sharp angle setting in the example does not need to additionally consider the tolerance effect of the sharp angle on the aperture of the camera hole 31 finally formed, so the aperture size of the camera hole 31 finally formed by the injection molding process can be controlled more accurately.

[0054] In some exemplary embodiments, the back panel body 211 may be made of iron. The plastic frame 212 may be made of a light shielding material, such as black plastic. The plastic frame 212 and the back panel body 211 may be connected as one through an injection molding process.

[0055] In some exemplary embodiments, Figure 2aAs shown, the display module 10 may be a liquid crystal display module, including a liquid crystal display panel, a first polarizer 13 and a cover plate 11 stacked sequentially on the display side of the liquid crystal display panel, and a second polarizer 16 disposed on the side of the liquid crystal display panel away from the display side. The liquid crystal display panel includes a first substrate 14 and a second substrate 15 disposed opposite to each other, and a liquid crystal layer disposed between the first substrate 14 and the second substrate 15. Among them, the cover plate 11 and the first polarizer 13 may be bonded by an adhesive layer (such as an optically transparent adhesive) 12, and the first polarizer 13 and the first substrate 14, as well as the second substrate 15 and the second polarizer 16 may be bonded by an adhesive layer (such as an optically transparent adhesive). The first polarizer 13 is provided with a third through hole 131 at a position corresponding to the camera hole 31, and the second polarizer 16 is provided with a fourth through hole 161 at a position corresponding to the camera hole 31, and the fourth through hole 161 is the blind hole 32 of the display module 10.

[0056] Exemplarily, the second substrate 15 may be referred to as an array substrate, including a thin film transistor array forming a pixel driving circuit, a pixel electrode, a common electrode, etc., disposed on the second substrate. The first substrate 14 may be referred to as a color filter substrate, including a color filter layer and a black matrix disposed on the first substrate, the color filter layer including a plurality of filter units arranged in an array, such as a red filter unit, a green filter unit, and a blue filter unit. The black matrix is ​​disposed between adjacent filter units to prevent cross-coloring.

[0057] Exemplarily, the surface of the first substrate 14 facing the second substrate 15 or the surface of the second substrate 15 facing the first substrate 14 may be provided with an annular light-shielding coating 17, which surrounds the positive projection area of ​​the camera hole 31 on the liquid crystal display panel. The liquid crystal layer does not have liquid crystal molecules in the area surrounded by the light-shielding coating 17, so that external light will not be affected by the liquid crystal when it passes through the liquid crystal display panel and enters the camera hole 31.

[0058] Exemplarily, the first polarizer 13 is provided with a third through hole 131 at a position corresponding to the camera hole 31, and the second polarizer 16 is provided with a fourth through hole 161 at a position corresponding to the camera hole 31, and the fourth through hole 161 is the blind hole 32 of the display module 10. When external light passes through the first polarizer 13 and the second polarizer 16, it can pass through the third through hole 131 and the fourth through hole 161 to enter the camera hole 31. The provision of the third through hole 131 and the fourth through hole 161 can improve the transmittance of external light entering the camera hole 31.

[0059] For example, Figure 2aAs shown, the optical film group 22 may include a reflective sheet 222, a light guide plate 221, a diffuser 223, a second brightness enhancement sheet 225 and a first brightness enhancement sheet 224 stacked in sequence in a direction away from the back plate 21. In this example, the first brightness enhancement sheet 224 is an optical film in the optical film group 22 that is closest to the display module 10, and the surface of the optical film group 22 facing the display module 10 is the surface of the first brightness enhancement sheet 224 facing the display module 10. The backlight module 20 also includes a light source, which may be arranged at the side of the light guide plate 221. The light emitted by the light source is incident into the light guide plate 221 in a side-entry manner, and is emitted from the surface of the light guide plate 221 away from the back plate 21, and then sequentially passes through the diffuser 223, the second brightness enhancement sheet 225 and the first brightness enhancement sheet 224 and is emitted into the display module 10. The diffuser 223 can make the emitted light more uniform. The second brightness enhancement sheet 225 and the first brightness enhancement sheet 224 can modulate the angle of the emitted light to increase the brightness of the backlight source.

[0060] In some exemplary embodiments, Figure 2a As shown, the height difference between the surface of the plastic frame 212 facing the display module 10 and the surface of the optical film set 22 facing the display module 10 can be 0 mm to 0.02 mm. That is, the surface of the plastic frame 212 facing the display module 10 can be protruding from or flush with the surface of the optical film set 22 facing the display module 10.

[0061] In some exemplary embodiments, Figure 2a As shown, the portion of the surface of the display module 10 facing away from the display side close to the blind hole 32 overlaps the portion of the first light shielding layer 23 located on the plastic frame 212. Exemplarily, the annular hole edge of the first light shielding layer 23 (herein, the annular hole edge of the annular component refers to the hole wall of the annular hole) can protrude from the hole wall of the fourth through hole 161. The first shading layer 23 includes a first part and a second part, the first part is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10, close to the second through hole 226, and the second part is arranged on the surface of the rubber frame 212 facing the display module 10; the part of the second polarizer 16 close to the fourth through hole 161 (that is, the blind hole 32 of the display module 10) is overlapped on the second part of the first shading layer 23, which can be understood as the part of the second polarizer 16 close to the fourth through hole 161 is overlapped on the rubber frame 212, so that the rubber frame 212 can support the second polarizer 16, which can avoid the second polarizer 16 pressing on the optical film group 22 to cause the optical film to wrinkle and other problems, and can avoid the external water vapor entering the backlight module 20 when a gap appears between the second polarizer 16 and the first part of the first shading layer 23.

[0062] In some exemplary embodiments, Figure 2a As shown, the first light shielding layer 23 is annular, and the edge of the annular hole of the first light shielding layer 23 can be flush with the hole wall of the second end (the end close to the display module 10) of the camera hole 31, or the hole wall of the second end of the camera hole 31 protrudes from the edge of the annular hole of the first light shielding layer 23. In this way, the first light shielding layer 23 will not extend into the camera hole 31, avoiding affecting the operation of the camera module in the camera hole 31.

[0063] Exemplarily, the light-shielding ring 24 is disposed on the first light-shielding layer 23, and the light-shielding ring 24 extends into the fourth through hole 161 of the second polarizer 16 and contacts the surface of the second substrate 15 exposed by the fourth through hole 161, so that the light-shielding ring 24 can prevent light emitted from the hole wall of the fourth through hole 161 of the second polarizer 16 from entering the camera hole 31.

[0064] For example, Figure 2b As shown, Figure 2b for Figure 2a Schematic diagram of a partial structure, the shading ring 24 is arranged on the first shading layer 23, and the edge of the ring hole of the shading ring 24 can be flush with the edge of the ring hole of the first shading layer 23. The aperture of the blind hole (i.e., the fourth through hole 161) is a, and the outer diameter of the shading ring is b, which can be set to b≤a-0.1mm. For example, there can be a gap D3 between the circumferential outer edge of the shading ring 24 and the hole wall of the fourth through hole 161, and the gap D3 can be greater than or equal to 0.19mm, so that the shading ring 24 can avoid interference with the hole wall of the fourth through hole 161 during the assembly process of the display module 10 and the backlight module 20. The thickness of the shading ring 24 can be d1 to d1+0.03mm, where d1 is the thickness of the second polarizer 16, so as to avoid interference or clearance fit between the shading ring 24 and the surface of the second substrate 15 exposed by the fourth through hole 161. The thickness of the light shielding ring 24 may be 0.05 mm to 0.15 mm. The material of the light shielding ring 24 may be compressed foam, polyethylene terephthalate (PET) or light shielding tape, etc. The first light shielding layer 23 may be a light shielding tape, and both sides of the light shielding tape may be sticky.

[0065] Exemplarily, the light shielding ring 24 and the first light shielding layer 23 are attached together before forming their respective ring holes, and the ring hole of the light shielding ring 24 and the ring hole of the first light shielding layer 23 can be formed by integral cutting, so that the edge of the ring hole of the light shielding ring 24 is flush with the edge of the ring hole of the first light shielding layer 23, and then the first light shielding layer 23 with the light shielding ring 24 attached is attached to the surface of the rubber frame 212 and the optical film group 22 facing the display module 10. The edge of the ring hole of the light shielding ring 24 is flush with the edge of the ring hole of the first light shielding layer 23, which is conducive to improving the attachment accuracy of the first light shielding layer 23.

[0066] For example, Figure 2b As shown, the width of the surface of the plastic frame 212 facing the display module 10 is D1, for example, D1=0.65mm. The width of the light shielding ring 24 is D2, for example, D2=0.2mm. There may be a gap D3 between the circumferential outer edge of the light shielding ring 24 and the hole wall of the fourth through hole 161, and the gap D3 may be greater than or equal to 0.19mm, for example, D3=0.19mm. The width of the portion of the second polarizer 16 overlapping the second portion of the first light shielding layer 23 is D4, for example, D4=0.2mm. The width of the portion of the first light shielding layer 23 attached to the plastic frame 212 (i.e., the second portion of the first light shielding layer 23) is: D2+D3+D4=0.59mm, which can ensure that the first light shielding layer 23 can be firmly attached to the plastic frame 212, reducing the risk of the first light shielding layer 23 detaching from the plastic frame 212.

[0067] In some exemplary embodiments, Figure 3a As shown, Figure 3a In some other exemplary embodiments Figure 1AA cross-sectional structural diagram of a display device, the display device comprises a display module 10 and a backlight module 20 arranged on a side of the display module 10 away from the display side, the backlight module 20 is provided with a camera hole 31, and a blind hole 32 is provided at a position corresponding to the camera hole 31 of the display module 10; the backlight module 20 comprises a back plate 21, an optical film group 22 stacked on the back plate 21 and facing the display module 10, and a first light shielding layer 23; the back plate 21 comprises a back plate body 211, the back plate body 211 is provided with a first through hole, and the back plate body 211 is provided with a blind hole 32 at the periphery of the first through hole facing the display module 1 0, the back plate 21 also includes a rubber frame 212 integrally connected to the bent portion 2111 and arranged along the circumference of the bent portion 2111, the first through hole, the bent portion 2111 and the rubber frame 212 form the camera hole 31; the optical film group 22 is provided with a second through hole 226 to avoid the bent portion 2111 and the rubber frame 212; the first light shielding layer 23 is arranged around the camera hole 31, and is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10 close to the second through hole 226 and the surface of the rubber frame 212 facing the display module 10.

[0068] The backlight module 20 further includes a light shielding ring 24 , which is disposed on the plastic frame 212 and extends into the blind hole 32 and contacts the surface of the display module 10 exposed by the blind hole 32 .

[0069] For example, Figure 3a As shown, the display module 10 may be a liquid crystal display module 10, comprising a liquid crystal display panel, a first polarizer 13 and a cover plate 11 stacked sequentially on the display side of the liquid crystal display panel, and a second polarizer 16 disposed on the side of the liquid crystal display panel away from the display side. The liquid crystal display panel comprises a first substrate 14 and a second substrate 15 disposed opposite to each other, and a liquid crystal layer disposed between the first substrate 14 and the second substrate 15. A third through hole 131 is disposed at a position corresponding to the camera hole 31 of the first polarizer 13, and a fourth through hole 161 is disposed at a position corresponding to the camera hole 31 of the second polarizer 16, and the fourth through hole 161 is the blind hole 32 of the display module 10.

[0070] For example, Figure 3aAs shown, the shading ring 24 and the plastic frame 212 may be an integral structure, that is, the shading ring 24 is a part of the plastic frame 212. The surface of the plastic frame 212 facing the display module 10 may be provided with an annular boss, which is the shading ring 24, and the annular boss and the plastic frame 212 are an integrally formed structure. Alternatively, the shading ring 24 and the plastic frame 212 may not be an integral structure, and the shading ring 24 is an additional component provided on the plastic frame 212, and the material of the shading ring 24 may be compressed foam, PET or light-shielding tape, etc.

[0071] For example, Figure 3a As shown, the surface of the rubber frame 212 facing the display module 10 is provided with an annular boss, and the annular boss is the shading ring 24. The hole wall of the annular boss can be flush with the cylindrical surface of the circumferential inner side surface 2120 of the rubber frame 212. The edge of the annular hole of the first shading layer 23 can protrude from the hole wall of the blind hole 32. The first shading layer 23 includes a first part and a second part, the first part is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10 close to the second through hole 226, and the second part is arranged on the surface of the rubber frame 212 facing the display module 10. The second part of the first shading layer 23 can be arranged on the part of the surface of the rubber frame 212 facing the display module 10 except the annular boss. As shown Figure 3b As shown, Figure 3b for Figure 3a A schematic diagram of the partial structure of the embodiment of the present invention shows that a gap X1 may be provided between the edge of the annular hole of the first shading layer 23 and the annular boss, for example, X1=0.12mm. A gap X2 may be provided between the hole wall of the blind hole 32 (the fourth through hole 161 of the second polarizer 16 in this example) and the annular boss, for example, X2=0.19mm, so that interference between the annular boss and the hole wall of the fourth through hole 161 can be avoided during the assembly process of the display module 10 and the backlight module 20. The width of the annular boss may be X3, for example, X3=0.15mm. While ensuring the molding ability and reliable strength of the annular boss, the width of the annular boss may be designed to be smaller. The height of the annular boss may be equal to the sum of the thickness of the first shading layer 23 and the thickness of the second polarizer 16, and the height of the annular boss may be 0.1mm to 0.2mm. The surface of the annular boss facing the display module 10 and the surface of the display module 10 exposed by the blind hole 32 may be in contact with each other or have a gap of less than or equal to 0.03 mm.

[0072] In some exemplary embodiments, Figure 4a As shown, Figure 4a In some other exemplary embodiments Figure 1AA cross-sectional structural schematic diagram of a display device, the display device comprises a display module 10 and a backlight module 20 arranged on a side of the display module 10 away from the display side, the backlight module 20 is provided with a camera hole 31, and a blind hole 32 is provided at a position corresponding to the camera hole 31 of the display module 10. The backlight module 20 comprises a back plate 21, an optical film group 22 stacked on the back plate 21 on the side facing the display module 10, and a first light shielding layer 23. The back plate 21 comprises a back plate body 211, the back plate body 211 is provided with a first through hole, the back plate body 211 is provided with a bending portion 2111 extending toward the side where the display module 10 is located at the periphery of the first through hole, the back plate 21 also comprises a rubber frame 212 integrally connected with the bending portion 2111 and arranged along the circumference of the bending portion 2111, and the first through hole, the bending portion 2111 and the rubber frame 212 form the camera hole 31. The optical film set 22 is provided with a second through hole 226 that avoids the bent portion 2111 and the plastic frame 212. The first light shielding layer 23 is arranged around the camera hole 31 and is arranged on the circumferential edge of the surface of the optical film set 22 facing the display module 10 close to the second through hole 226 and the surface of the plastic frame 212 facing the display module 10.

[0073] The backlight module 20 also includes a shading ring 24, which is arranged on the plastic frame 212. The first shading layer 23 is also arranged on the surface of the shading ring 24 facing the display module 10. The portion of the first shading layer 23 located on the shading ring 24 extends into the blind hole 32 and contacts the surface of the display module 10 exposed by the blind hole 32.

[0074] For example, Figure 4a As shown, the display module 10 may be a liquid crystal display module 10, comprising a liquid crystal display panel, a first polarizer 13 and a cover plate 11 stacked sequentially on the display side of the liquid crystal display panel, and a second polarizer 16 disposed on the side of the liquid crystal display panel away from the display side. The liquid crystal display panel comprises a first substrate 14 and a second substrate 15 disposed opposite to each other, and a liquid crystal layer disposed between the first substrate 14 and the second substrate 15. A third through hole 131 is disposed at a position corresponding to the camera hole 31 of the first polarizer 13, and a fourth through hole 161 is disposed at a position corresponding to the camera hole 31 of the second polarizer 16, and the fourth through hole 161 is the blind hole 32 of the display module 10.

[0075] In some exemplary embodiments, Figure 4aAs shown, the first shading layer 23 includes a first part and a second part, the first part is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10 close to the second through hole 226, and the second part is arranged on the surface of the rubber frame 212 facing the display module 10; the part of the second polarizer 16 close to the fourth through hole 161 is overlapped on the second part of the first shading layer 23.

[0076] For example, Figure 4b As shown, Figure 4b for Figure 4a Schematic diagram of the partial structure, the shading ring 24 and the rubber frame 212 can be an integrally formed structure, that is, the shading ring 24 is a part of the rubber frame 212, and the surface of the rubber frame 212 facing the display module 10 can be provided with an annular boss, which is the shading ring 24. The second part of the first shading layer 23 is also arranged on the surface of the annular boss facing the display module 10. The cross-sectional shape of the annular boss can be roughly trapezoidal, and the intersection of the circumferential outer side surface of the annular boss and the surface of the annular boss facing the display module can be provided with a chamfer. The hole wall of the annular hole of the annular boss can be a part of the hole wall of the camera hole 31. The circumferential outer side surface of the annular boss can be a slope structure, and the slope angle α can be 20 degrees to 90 degrees, for example, 30 degrees to 60 degrees, so that the part of the first shading layer 23 arranged on the annular boss is not easy to separate from the annular boss, which can improve the adhesion reliability of the first shading layer 23. The edge of the ring hole of the first shading layer 23 can be flush with the hole wall of the ring hole of the annular boss, or the hole wall of the ring hole of the annular boss can protrude from the edge of the ring hole of the first shading layer 23, so that the first shading layer 23 will not protrude into the camera hole 31 and affect the operation of the camera module.

[0077] For example, Figure 4c As shown, Figure 4c for Figure 4aAnother partial structural schematic diagram, the width of the surface of the rubber frame 212 facing the display module 10 is W1, for example, W1 = 0.65mm. The width of the surface of the annular boss facing the display module is W2, for example, W2 = 0.15mm. Under the condition of ensuring the molding ability and reliable strength of the annular boss, the width of the annular boss can be designed to be as small as possible. The height of the annular boss can be equal to the thickness of the second polarizer 16, and the height of the annular boss can be 0.1mm to 0.2mm. There can be a gap W3 between the portion of the first shading layer 23 disposed on the annular boss and the hole wall of the blind hole 32 (the fourth through hole 161 of the second polarizer 16 in this example), for example, W3 = 0.19mm. The gap W3 can avoid interference between the portion of the first shading layer 23 disposed on the annular boss and the hole wall of the blind hole 32 during the assembly process of the display module 10 and the backlight module 20. The width of the portion of the second polarizer 16 overlapping the second portion of the first light shielding layer 23 is W4, for example, W4=0.2 mm. The width of the portion of the first light shielding layer 23 disposed on the plastic frame 212 (i.e., the second portion of the first light shielding layer 23) can be 0.59 mm, which can ensure that the first light shielding layer 23 can be firmly attached to the plastic frame 212, reducing the risk of the first light shielding layer 23 detaching from the plastic frame 212.

[0078] In some exemplary embodiments, Figure 5a As shown, Figure 5a In some further exemplary embodiments Figure 1 AA cross-sectional structural diagram of a display device, the display device comprises a display module 10 and a backlight module 20 arranged on a side of the display module 10 away from the display side, the backlight module 20 is provided with a camera hole 31, and a blind hole 32 is provided at a position corresponding to the camera hole 31 of the display module 10; the backlight module 20 comprises a back plate 21, an optical film group 22 stacked on the back plate 21 and facing the display module 10, and a first light shielding layer 23; the back plate 21 comprises a back plate body 211, the back plate body 211 is provided with a first through hole, and the back plate body 211 is provided with a blind hole 32 at the periphery of the first through hole facing the display module 1 0, the back plate 21 also includes a rubber frame 212 integrally connected to the bent portion 2111 and arranged along the circumference of the bent portion 2111, the first through hole, the bent portion 2111 and the rubber frame 212 form the camera hole 31; the optical film group 22 is provided with a second through hole 226 to avoid the bent portion 2111 and the rubber frame 212; the first light shielding layer 23 is arranged around the camera hole 31, and is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10 close to the second through hole 226 and the surface of the rubber frame 212 facing the display module 10.

[0079] The backlight module 20 further includes a light shielding ring 24 arranged around the camera hole 31, the light shielding ring 24 is arranged on the adhesive frame 212, and the light shielding ring 24 extends into the blind hole 32 and contacts the surface of the display module 10 exposed by the blind hole 32; the light shielding ring 24 is formed after the adhesive 41 is cured. The light shielding ring 24 of this embodiment can, on the one hand, block the light emitted from the hole wall of the blind hole 32 from entering the camera hole 31, and on the other hand, can play a role in bonding the display module 10 and the backlight module 20, and is not easy to debond.

[0080] For example, Figure 5a As shown, the display module 10 may be a liquid crystal display module 10, comprising a liquid crystal display panel, a first polarizer 13 and a cover plate 11 stacked sequentially on the display side of the liquid crystal display panel, and a second polarizer 16 disposed on the side of the liquid crystal display panel away from the display side. The liquid crystal display panel comprises a first substrate 14 and a second substrate 15 disposed opposite to each other, and a liquid crystal layer disposed between the first substrate 14 and the second substrate 15. A third through hole 131 is disposed at a position corresponding to the camera hole 31 of the first polarizer 13, and a fourth through hole 161 is disposed at a position corresponding to the camera hole 31 of the second polarizer 16, and the fourth through hole 161 is the blind hole 32 of the display module 10.

[0081] For example, Figure 5a As shown, the annular edge of the first light shielding layer 23 may protrude from the hole wall of the blind hole 32, and the light shielding ring 24 may also be arranged on the portion of the first light shielding layer 23 protruding from the hole wall of the blind hole 32. The hole wall of the camera hole 31 at one end close to the display module 10 may protrude from the annular edge of the light shielding ring 24, which can prevent the adhesive 41 forming the light shielding ring 24 from overflowing into the camera hole 31 before curing; or, the hole wall of the camera hole 31 at one end close to the display module 10 may be flush with the annular edge of the light shielding ring 24. There may be a gap between the light shielding ring 24 and the hole wall of the blind hole 32, or the light shielding ring 24 may be in contact with the hole wall of the blind hole 32.

[0082] Exemplarily, the adhesive 41 forming the light shielding ring 24 may be black silicone adhesive or UV adhesive (ultraviolet light curing adhesive).

[0083] For example, Figure 5b As shown, Figure 5b for Figure 5aThe preparation process of the display device is schematically shown, and the preparation process of the display device may include the following steps: a) applying a circle of adhesive 41 on the surface of the display module 10 exposed by the blind hole 32 near the wall of the blind hole 32; b) assembling the backlight module 20 attached with the first shading layer 23 (such as shading tape) and the display module 10 with the adhesive 41 applied thereon, during the assembly process, the adhesive 41 is squeezed by the adhesive frame 212 to overflow to the surroundings and fill the gap, and the adhesive 41 is cured to form the shading ring 24.

[0084] For example, Figure 5b As shown, in the step a), after the adhesive 41 is applied, there may be a gap Y1 between the adhesive 41 and the hole wall of the blind hole 32, which may be set to Y1 ≥ 0 mm, such as Y1 = 0.05 mm. In the subsequent assembly process of the display module 10 and the backlight module 20, the adhesive 41 overflows and fills the gap (which may be completely filled or incompletely filled), and the adhesive 41 may be prevented from overflowing between the second polarizer 16 and the first light shielding layer 23, so as to avoid the formation of bulges after curing, which may cause the surface of the second polarizer 16 to be uneven. The width of the applied adhesive 41 is Y2, Y2 = 0.35 mm to 0.5 mm, and the height of the applied adhesive 41 may be 0.1 mm to 0.16 mm. Figure 5a In the display device, the projection position of the circumferential edge of the end of the camera hole 31 close to the display module 10 on the surface of the display module 10 exposed by the blind hole 32 is the reference position. After the adhesive 41 is applied, there can be a gap Y3 between the adhesive 41 and the reference position, such as Y3 ≥ 0.05mm, so that the adhesive 41 will not overflow into the camera hole 31 and block the light during the assembly process of the display module 10 and the backlight module 20. When the tolerance allowed by the aperture size of the camera hole 31 is large, it can be set to Y3 = 0mm, so that there will be no impact even if the adhesive 41 overflows into the camera hole 31 during the assembly process of the display module 10 and the backlight module 20.

[0085] In some exemplary embodiments, Figure 6a As shown, Figure 6a In some further exemplary embodiments Figure 1AA cross-sectional structural diagram of a display device, the display device comprises a display module 10 and a backlight module 20 arranged on a side of the display module 10 away from the display side, the backlight module 20 is provided with a camera hole 31, and a blind hole 32 is provided at a position corresponding to the camera hole 31 of the display module 10; the backlight module 20 comprises a back plate 21, an optical film group 22 stacked on the back plate 21 and facing the display module 10, and a first light shielding layer 23; the back plate 21 comprises a back plate body 211, the back plate body 211 is provided with a first through hole, and the back plate body 211 is provided with a blind hole 32 at the periphery of the first through hole facing the display module 1 0, the back plate 21 also includes a plastic frame 212 integrally connected to the bending portion 2111 and arranged along the circumference of the bending portion 2111, the first through hole, the bending portion 2111 and the plastic frame 212 form the camera hole 31; the optical film group 22 is provided with a second through hole 226 to avoid the bending portion 2111 and the plastic frame 212; the first light shielding layer 23 is arranged around the camera hole 31, and is arranged on the circumferential edge of the surface of the optical film group 22 facing the display module 10 close to the second through hole 226 and the surface of the plastic frame 212 facing the display module 10. A second light shielding layer 321 is provided on the hole wall of the blind hole 32. In this embodiment, the second light shielding layer 321 can block the light emitted from the hole wall of the blind hole 32 from entering the camera hole 31, thereby ensuring the normal operation of the camera module in the camera hole 31.

[0086] For example, Figure 6a As shown, the display module 10 may be a liquid crystal display module 10, comprising a liquid crystal display panel, a first polarizer 13 and a cover plate 11 stacked sequentially on the display side of the liquid crystal display panel, and a second polarizer 16 disposed on the side of the liquid crystal display panel away from the display side. The liquid crystal display panel comprises a first substrate 14 and a second substrate 15 disposed opposite to each other, and a liquid crystal layer disposed between the first substrate 14 and the second substrate 15. A third through hole 131 is disposed at a position corresponding to the camera hole 31 of the first polarizer 13, and a fourth through hole 161 is disposed at a position corresponding to the camera hole 31 of the second polarizer 16, and the fourth through hole 161 is the blind hole 32 of the display module 10.

[0087] For example, Figure 6a As shown in FIG. 2 , the annular edge of the first light shielding layer 23 may protrude from the hole wall of the blind hole 32. Figure 6b As shown, Figure 6b In some exemplary embodiments Figure 6aThe schematic diagram of the structure of the second polarizer 16 in the display device is shown in FIG. 3 , wherein the second light-shielding layer 321 may be a light-shielding material 51 coated on the hole wall of the blind hole 32. For example, the second light-shielding layer 321 may be a light-shielding material 51 coated on the hole wall of the fourth through hole 161 of the second polarizer 16, such as black ink or light-shielding glue. The raw materials of a plurality of second polarizers 16 may be stacked and placed and drilled to form the fourth through hole 161, and then black ink or light-shielding glue may be coated on the hole wall of the fourth through hole 161. The black ink or light-shielding glue may be cured to form the second light-shielding layer 321. The thickness of the black ink or light-shielding glue may be about 0.01 mm.

[0088] Alternatively, the second light shielding layer 321 is formed by chemically blackening the portion of the film material provided with the blind hole 32 near the blind hole 32. Figure 6c As shown, Figure 6c In some other exemplary embodiments Figure 6a The schematic diagram of the structure of the second polarizer 16 in the display device of FIG. 1 is a schematic diagram of the structure of the second polarizer 16 in the display device, the second light shielding layer 321 can be formed by chemically blackening and failing the portion 162 of the second polarizer 16 near the fourth through hole 161. Exemplarily, the raw materials of a plurality of second polarizers 16 can be stacked and placed and drilled to form the fourth through hole 161, and then chemical solution can be sprayed on the hole wall of the fourth through hole 161, and the chemical solution reacts with the material of the second polarizer 16, so that the portion 162 of the second polarizer 16 near the fourth through hole 161 is blackened and failed, thereby forming the second light shielding layer 321.

[0089] In the drawings, the size of the components, the thickness of the layers, or the regions are sometimes exaggerated for the sake of clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to the dimensions, and the shape and size of each component in the drawings do not reflect the true proportions. In addition, the drawings schematically show some examples, and the embodiments of the present disclosure are not limited to the shapes or values ​​shown in the drawings.

[0090] In the description of this article, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore includes a state where the angle is greater than 85° and less than 95°.

[0091] In the description herein, the terms "upper", "lower", "left", "right", "top", "inside", "outside", "axial", "four corners", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the embodiments of the present disclosure, rather than indicating or implying that the referred structure has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0092] In the description herein, unless otherwise clearly specified and limited, the terms "connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in the embodiments of the present disclosure can be understood according to the circumstances.

Claims

1. A display device, characterized in that: It comprises a display module and a backlight module arranged on a side of the display module away from the display side, the backlight module is provided with a camera hole, and a blind hole is arranged at a position of the display module corresponding to the camera hole; The backlight module comprises a back plate, an optical film group stacked on a side of the back plate facing the display module, and a first light shielding layer; The back plate includes a back plate body, the back plate body is provided with a first through hole, the back plate body is provided with a bending portion extending toward the side where the display module is located at the periphery of the first through hole, the back plate further includes a rubber frame integrally connected to the bending portion and arranged along the circumference of the bending portion, and the first through hole, the bending portion and the rubber frame form the camera hole; The optical film assembly is provided with a second through hole to avoid the bending portion and the rubber frame; The first light shielding layer is arranged around the camera hole and is arranged on the circumferential edge of the surface of the optical film group facing the display module close to the second through hole and the surface of the rubber frame facing the display module; A second light-shielding layer is provided on the hole wall of the blind hole; The display module comprises a liquid crystal display panel, a first polarizer arranged on the display side of the liquid crystal display panel, and a second polarizer arranged on the side of the liquid crystal display panel away from the display side; the liquid crystal display panel comprises a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer arranged between the first substrate and the second substrate; a surface of the first substrate facing the second substrate or a surface of the second substrate facing the first substrate is provided with an annular light-shielding coating, the light-shielding coating surrounds the orthographic projection area of ​​the camera hole on the liquid crystal display panel, and the liquid crystal layer has no liquid crystal molecules arranged in the area surrounded by the light-shielding coating; The second light shielding layer is arranged on a side of the first light shielding layer close to the light shielding coating layer; a hole wall of one end of the camera hole close to the display module protrudes from the edge of the ring hole of the first light shielding layer; The second light shielding layer is formed after a portion of the film material provided with the blind hole and close to the blind hole is chemically blackened and becomes ineffective.

2. The display device according to claim 1, wherein: A fourth through hole is provided at a position of the second polarizer corresponding to the camera hole, and the fourth through hole is the blind hole of the display module.

Images