Display screen, display device, and method for processing camera hole on display screen

Abstract

The present application relates to a display screen, a display device, and a method for processing a camera hole on a display screen, belonging to the technical field of display screens, wherein the display screen comprises a display screen body and a glass cover plate, wherein the glass cover plate is stacked on the display screen body, wherein the display screen body comprises a heat dissipation film layer, a protective film layer, a panel module, and a polarizer stacked in sequence from bottom to top, and wherein the display screen body is provided with a camera hole penetrating the display screen body, wherein the camera hole comprises a first sub-hole penetrating the heat dissipation film layer, a second sub-hole penetrating the protective film layer, a third sub-hole penetrating the panel module, and a fourth sub-hole penetrating the polarizer, wherein the diameter of the first sub-hole ≧ the diameter of the second sub-hole> the diameter of the third sub-hole=the diameter of the fourth sub-hole. According to the display screen of the present invention, stress concentration can be prevented in the protective film layer when processing the camera hole on the display screen, and the protective module can be prevented from shrinking and pulling to separate from the panel module to produce a gap.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and in particular to a display screen, a display device, and a method for processing a camera hole on a display screen. Background Art

[0002] As the application of display devices becomes more and more extensive, people's demand for the use of display devices is not only for chatting and socializing, but also for the camera function, which is one of the essential functions of display devices. In the prior art, when processing the camera hole on the display screen, the protective film layer is usually attached to the side of the panel module away from the polarizer, and then the protective film layer, the panel module and the polarizer are cut at the same time, so as to process the camera hole on the display screen. Since the film layer that needs to be cut at the same time is thick, the energy required by the cutting equipment is large, resulting in stress accumulation of the protective film layer after cutting. After the cutting is completed, the stress of the protective film layer is released, and the protective film layer and the panel module are pulled and peeled off. Figure 4-Figure 6 As shown, during the safety test, water vapor will intrude from the peeling point, causing the camera hole package to fail.

[0003] Therefore, there is an urgent need for a processing method that can improve the failure of the camera hole. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a display screen, which can prevent the camera hole packaging from failing and prevent water vapor from entering when the camera hole is processed.

[0005] The present invention also provides a display device, which can prevent the camera hole packaging from failing and prevent water vapor from entering.

[0006] The present invention also provides a method for processing a camera hole on a display screen, which can prevent the camera hole packaging from failing and prevent water vapor from entering after the display screen is processed.

[0007] A display screen according to an embodiment of the present invention is used for a display device, comprising a display screen body and a glass cover plate, wherein the glass cover plate is stacked on the display screen body, the display screen body comprises a heat dissipation film layer, a protective film layer, a panel module, a polarizer and a glass cover plate stacked in sequence from bottom to top, a camera hole penetrating the display screen body is provided on the display screen body, the camera hole comprises a first sub-hole penetrating the heat dissipation film layer, a second sub-hole penetrating the protective film layer, a third sub-hole penetrating the panel module and a fourth sub-hole penetrating the polarizer, and the diameter of the first sub-hole ≧ the diameter of the second sub-hole> the diameter of the third sub-hole=the diameter of the fourth sub-hole.

[0008] To elaborate, the diameter of the third sub-hole is the same as the diameter of the fourth sub-hole. When the third sub-hole and the fourth sub-hole are processed on the display screen, the third sub-hole and the fourth sub-hole can be processed at the same time. The diameter of the second sub-hole is larger than the diameters of the third sub-hole and the fourth sub-hole, so the second sub-hole does not need to be processed at the same time as the third sub-hole and the fourth sub-hole. The second sub-hole can be prepared by pre-fabricating a hole on the protective film layer and then stacking it with the panel module, or by using a cutting device to pre-fabricate the second sub-hole on the display screen and then cutting out the third sub-hole and the fourth sub-hole. In this way, stress concentration on the protective film layer can be prevented from being pulled and separated from the panel module. At the same time, the diameter of the second sub-hole is larger than the diameters of the third sub-hole and the fourth sub-hole, which can also make way for processing the camera hole on the panel module and the polarizer, providing operating space.

[0009] The display screen according to the embodiment of the present invention can prevent stress concentration in the protective film layer when processing the camera hole on the display screen, and prevent the protection module from shrinking and pulling and separating from the panel module to produce a gap. Therefore, when applied to a display device, it can prevent the camera hole packaging from failing and prevent water vapor intrusion.

[0010] According to the display screen of the embodiment of the present invention, the central axis of the camera hole is perpendicular to the plane where the display screen body is located.

[0011] According to the display screen of the embodiment of the present invention, a waterproof sealant layer is coated inside the second sub-hole, the third sub-hole and the fourth sub-hole.

[0012] Optionally, the edge of the lower end of the waterproof sealant layer extends to a portion of the protective film layer opposite to the first sub-hole.

[0013] According to the display screen of the embodiment of the present invention, the thickness of the waterproof sealant layer is 0.5 mm to 1 mm.

[0014] According to the display screen of the embodiment of the present invention, the difference between the diameter of the first sub-hole and the diameter of the second sub-hole is 1 mm to 2 mm.

[0015] According to the display screen of the embodiment of the present invention, the difference between the diameter of the second sub-hole and the diameter of the third sub-hole or the diameter of the fourth sub-hole is 0.5 mm to 1 mm.

[0016] According to the display screen of the embodiment of the present invention, a positioning rib is provided on a side of the panel module close to the protective film layer, and the positioning rib is located on a portion of the panel module opposite to the second sub-hole.

[0017] The display device according to the embodiment of the present invention comprises: the display screen as described above; a back cover, wherein the back cover and the display screen together define an installation cavity, a control module is arranged in the installation cavity, and a glass cover layer of the display screen is away from the back cover.

[0018] According to the method for processing a camera hole on a display screen according to an embodiment of the present invention, a heat dissipation film layer, a protective film layer, a panel module, a polarizer and a glass cover are provided, a first sub-hole is prefabricated on the heat dissipation film layer, a second sub-hole is prefabricated on the protective film layer, the heat dissipation film layer, the protective film layer, the panel module, the polarizer and the glass cover are stacked in sequence from bottom to top, and a third sub-hole and a fourth sub-hole are processed on the panel module and the polarizer by laser melting.

[0019] Optionally, waterproof sealant is applied in the second sub-hole, the third sub-hole and the fourth sub-hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 is a cross-sectional view of a display screen according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the embodiment with marked dimensions;

[0024] Figure 3 A cross-sectional view of a display screen having a camera hole provided with a waterproof adhesive layer according to an embodiment of the present invention;

[0025] Figure 4 This is a microscope magnified picture of the tearing of the protective film layer and the panel module in the prior art;

[0026] Figure 5 The display screen in the prior art has rainbow lines appearing on the camera hole during the reliability test;

[0027] Figure 6 This is an OM analysis diagram of a display screen camera hole in the prior art.

[0028] Reference numerals:

[0029] Display screen 1, display screen body 1a, glass cover plate 1b,

[0030] Heat dissipation film layer 10 , first sub-hole 11 , protection film layer 20 , second sub-hole 21 , panel module 30 , third sub-hole 31 , polarizer 40 , fourth sub-hole 41 , camera hole 60 , waterproof sealant layer 70 . DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The following describes a display screen 1 according to an embodiment of the present invention with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 2 As shown, a display screen 1 according to an embodiment of the present invention is used for a display device, including a display screen body 1a and a glass cover plate 1b, the glass cover plate 1b is stacked on the display screen body 1a, the display screen body 1a includes a heat dissipation film layer 10, a protective film layer 20, a panel module 30, and a polarizer 40 stacked in sequence from bottom to top, the glass cover plate 1b is stacked on the side of the polarizer 40 away from the panel module 30, and the display screen body 1a is provided with a camera hole 60 that penetrates the display screen body 1a, the camera hole 60 is a stepped hole, the camera hole 60 includes a first sub-hole 11 penetrated on the heat dissipation film layer 10, a second sub-hole 21 penetrated on the protective film layer 20, a third sub-hole 31 penetrated on the panel module 30 and a fourth sub-hole 41 penetrated on the polarizer 40, the diameter of the first sub-hole 11 ≧ the diameter of the second sub-hole 21>the diameter of the third sub-hole 31=the diameter of the fourth sub-hole 41.

[0034] Specifically, the diameter of the first sub-hole 11 is D1, the diameter of the second sub-hole 21 is D2, the diameter of the third sub-hole 31 is D3, and the diameter of the fourth sub-hole 41 is D4. In some embodiments, D1=D2, in some embodiments, D1>D2, and in all embodiments, D2 is greater than D3 and D4, and D3 is equal to D4.

[0035] In detail, the diameter of the third sub-hole 31 is the same as the diameter of the fourth sub-hole 41. When the third sub-hole 31 and the fourth sub-hole 41 are processed on the display screen 1, the third sub-hole 31 and the fourth sub-hole 41 can be processed at the same time. The diameter of the second sub-hole 21 is larger than the diameters of the third sub-hole 31 and the fourth sub-hole 41, so the second sub-hole 21 does not need to be processed at the same time as the third sub-hole 31 and the fourth sub-hole 41. The second sub-hole 21 can be formed by pre-fabricating a hole on the protective film layer 20 and then stacking it with the panel module 30, or the second sub-hole 21 can be pre-fabricated on the display screen 1 by a cutting device, and then the third sub-hole 31 and the fourth sub-hole 41 are cut. In this way, the stress concentration of the protective film layer 20 and the pulling and separation from the panel module 30 can be prevented. At the same time, the diameter of the second sub-hole 21 is larger than the diameters of the third sub-hole 31 and the fourth sub-hole 41, which can also make way for processing the camera hole 60 on the panel module 30 and the polarizer 40 to provide operating space.

[0036] It should be noted that the shape of the first sub-hole 11 includes but is not limited to square, round, elliptical, wavy and rectangular, etc.; the shape of the second sub-hole 21 includes but is not limited to square, round, elliptical, wavy and rectangular, etc.; the third sub-hole 31 and the fourth sub-hole 41 have the same shape, including but not limited to square, round, elliptical, wavy and rectangular, etc., but usually, the camera is round, so in order to adapt to the shape of the camera, the shape of the third sub-hole 31 and the fourth sub-hole 41 is usually set to be round.

[0037] Since processing errors are unavoidable in actual processing production, the diameter of the third sub-hole 31 is the same as the diameter of the fourth sub-hole 41, which means that the diameter of the third sub-hole 31 is equal to the diameter of the fourth sub-hole 41 within the processing error range.

[0038] Secondly, the display device includes but is not limited to a mobile phone, a reader, an IPAD, etc. When the display screen 1 is applied to a mobile phone, the panel module 30 of the display screen 1 usually includes a touch module and a display module.

[0039] In addition, in the phrase "heat dissipation film layer 10, protective film layer 20, panel module 30, polarizer 40 and glass cover plate 1b stacked sequentially from bottom to top", "from bottom to top" here is only to describe a general positional relationship of the relative positions of the various film layers. When the display screen 1 is used in different occasions, it can be the heat dissipation film layer 10, protective film layer 20, panel module 30, polarizer 40 and glass cover plate 1b stacked sequentially from left to right, or the heat dissipation film layer 10, protective film layer 20, panel module 30, polarizer 40 and glass cover plate 1b stacked sequentially from right to left; or the heat dissipation film layer 10, protective film layer 20, panel module 30, polarizer 40 and glass cover plate 1b stacked sequentially from top to bottom. When in use, the glass cover plate 1b side is the front side of the display screen 1, the heat dissipation film layer 10 is the back side of the display screen 1, and the pattern color displayed on the display screen 1 is viewed from the glass cover plate 1b side.

[0040] The display screen 1 according to the embodiment of the present invention can prevent stress concentration in the protective film layer 20 when processing the camera hole 60 on the display screen 1, and prevent the protective module from shrinking and pulling to separate from the panel module 30 to produce a gap. Therefore, when applied to a display device, it can prevent the camera hole 60 from packaging failure and prevent water vapor intrusion.

[0041] According to the display screen 1 of the embodiment of the present invention, the central axis of the camera hole 60 is perpendicular to the plane where the display screen body 1a is located. That is to say, the central axis of the first sub-hole 11 is perpendicular to the plane where the display screen body 1a is located, the central axis of the second sub-hole 21 is perpendicular to the plane where the display screen body 1a is located, and the central axis of the third sub-hole 31 is perpendicular to the plane where the display screen body 1a is located. This allows the display screen 1 to not block the field of view of the camera without increasing its size when used in a display device.

[0042] like Figure 3 As shown, according to the display screen 1 of the embodiment of the present invention, the second sub-hole 21, the third sub-hole 31 and the fourth sub-hole 41 are coated with a waterproof sealant layer 70, the portion of the waterproof sealant layer 70 in the second sub-hole 21 extends along the circumference of the second sub-hole 21 to completely cover the inner wall of the second sub-hole 21, the portion of the waterproof sealant layer 70 in the third sub-hole 31 extends along the circumference of the third sub-hole 31 to completely cover the inner wall of the third sub-hole 31, and the portion of the waterproof sealant layer 70 in the fourth sub-hole 41 extends along the circumference of the fourth sub-hole 41 to completely cover the inner wall of the fourth sub-hole 41. By providing the waterproof sealant layer 70, after cutting the camera hole 60, the waterproof sealant layer 70 can be used to block the slight separation and narrow gap that may appear between the protective film layer 20 and the panel module 30, and between the panel module 30 and the polarizer 40, so as to further prevent the camera hole 60 from packaging failure, and prevent water vapor intrusion in reliability experiments.

[0043] like Figure 3As shown, optionally, the edge of the lower end of the waterproof sealant layer 70 extends to the portion of the protective film layer 20 opposite to the first sub-hole 11, which can further block the slight separation and narrow gap that may appear between the protective film layer 20 and the panel module 30. At the same time, the waterproof sealant layer 70 can also increase the pulling force for the protective film layer 20, thereby preventing the protective film layer 20 and the panel module 30 from having a slight separation and narrow gap here, thereby improving the sealing effect of the camera hole 60 package.

[0044] According to the display screen 1 of the embodiment of the present invention, the thickness of the waterproof sealant layer 70 is 0.5 mm to 1 mm, that is, the thickness d of the waterproof sealant layer 70 satisfies: 0.5 mm ≤ d ≤ 1 mm. In some embodiments, the thickness of the waterproof sealant layer 70 is 0.5 mm, 0.8 mm, 1 mm, etc. If the thickness of the waterproof sealant layer 70 is too thin, it will not have the effect of sealing and shielding. If the thickness of the waterproof sealant layer 70 is too thick, when the display screen 1 is assembled in the display device, it will block the field of view of the camera. Therefore, the appropriate thickness of the waterproof sealant layer 70 can play a sealing and shielding role without blocking the field of view of the camera.

[0045] According to the display screen 1 of the embodiment of the present invention, the difference between the diameter of the first sub-hole 11 and the diameter of the second sub-hole 21 is 1mm to 2mm. That is, 1mm≤D1-D2≤2mm. In some embodiments, the difference between the diameter of the first sub-hole 11 and the diameter of the second sub-hole 21 is 1mm, 1.2mm, 1.5mm, 1.6mm, 1.8mm, and 2mm, etc. The smaller the difference between the diameter of the first sub-hole 11 and the diameter of the second sub-hole 21, the closer the edge of the first sub-hole 11 and the edge of the second sub-hole 21 are. When the edge of the second sub-hole 21 is completely accommodated in the first sub-hole 11, more delicate operations are required during alignment, which is easy to be misaligned and misaligned left and right; the larger the difference between the diameter of the first sub-hole 11 and the diameter of the second sub-hole 21, the easier it is for the heat dissipation film layer 10 to fail to play a role in local heat dissipation of the panel module 30 near the camera hole 60.

[0046] In some embodiments, the first sub-hole 11 on the heat dissipation film layer 10 is prefabricated before the material is received, and the second sub-hole 21 on the protective film layer 20 is also prefabricated before the material is received. When the protective film layer 20 is stacked and fixed on the back of the panel module 30, and then the heat dissipation film layer 10 is fixed on the protective film layer 20, therefore, the difference between the diameter of the appropriate first sub-hole 11 and the diameter of the second sub-hole 21 can leave a margin, simplifying the alignment method of the second sub-hole 21 and the first sub-hole 11, ensuring that the circumferential edges of the second sub-hole 21 are all located in the first sub-hole 11, and at the same time can play a role in heat dissipation of the panel module 30.

[0047] In some embodiments, the first sub-hole 11 on the heat dissipation film layer 10 is prefabricated before the material is received, and the second sub-hole 21 on the protective film layer 20 is also prefabricated before the material is received. When the protective film layer 20 is stacked and fixed on the back of the panel module 30, and then the heat dissipation film layer 10 is fixed on the protective film layer 20, a margin is left to simplify the alignment of the second sub-hole 21 and the first sub-hole 11, and ensure that the circumferential edges of the second sub-hole 21 are all located in the first sub-hole 11.

[0048] According to the display screen 1 of the embodiment of the present invention, the difference between the diameter of the second sub-hole 21 and the diameter of the third sub-hole 31 or the diameter of the fourth sub-hole 41 is 0.5mm-1mm. That is, 0.5mm≤D2-D3≤1mm, 0.5mm≤D2-D4≤1mm. In some embodiments, the difference between the diameter of the second sub-hole 21 and the diameter of the third sub-hole 31 or the diameter of the fourth sub-hole 41 is 0.5mm, 0.7mm, 0.8mm, 1mm, etc. Such a setting enables the second sub-hole 21 to provide a margin and operating space for the cutting equipment to cut the third sub-hole 31 and the fourth sub-hole 41.

[0049] In some embodiments, the second sub-hole 21 on the protective film layer 20 is prefabricated before the material is received. In other embodiments, the second sub-hole 21 on the protective film layer 20 is processed before processing the third sub-hole 31 and the fourth sub-hole 41 when the protective film layer 20 is laminated and fixed on the back of the panel module 30. The smaller the difference between the diameter of the second sub-hole 21 and the diameter of the third sub-hole 31 or the diameter of the fourth sub-hole 41, the smaller the margin and operating space provided by the cutting equipment for cutting the third sub-hole 31 and the fourth sub-hole 41, and the greater the difficulty of operation. If the edge of the protective film layer 20 forming the second sub-hole 21 is cut at the same time, stress concentration of the protective film layer 20 will be caused; the larger the difference between the diameter of the second sub-hole 21 and the diameter of the third sub-hole 31 or the diameter of the fourth sub-hole 41, the less the protective film layer 20 can protect the panel module 30, and the panel module 30 near the camera hole 60 is easily scratched. Therefore, the difference between the diameter of the appropriate second sub-hole 21 and the diameter of the third sub-hole 31 or the diameter of the fourth sub-hole 41 can provide margin and operating space for the cutting equipment to cut the third sub-hole 31 and the fourth sub-hole 41 while effectively protecting the panel module 30.

[0050] According to the display screen 1 of the embodiment of the present invention, a positioning rib is provided on one side of the panel module 30 close to the protective film layer 20, and the positioning rib is located on the portion of the panel module 30 opposite to the second sub-hole 21. When the second sub-hole 21 on the protective film layer 20 is a prefabricated hole before the material is received, it is necessary to align the second sub-hole 21 on the protective film layer 20 with the position of the third sub-hole 31 to be processed on the panel module 30, so that the edge of the third sub-hole 31 can be located within the contour of the second sub-hole 21 while the third sub-hole 31 is processed at the specified position of the panel module 30. Therefore, the protective module layer and the panel module 30 layer can be quickly stacked as required through the positioning rib.

[0051] In some embodiments, the positioning ribs extend and close circumferentially. In other embodiments, the positioning ribs are two cross marks located at diagonal positions. Of course, the positioning ribs may also have other structural arrangements so that when the protective film layer 20 is installed on the panel module 30, the positioning ribs can be accommodated in the second sub-hole 21.

[0052] The display device according to the embodiment of the present invention includes the display screen 1 and the back cover as described above.

[0053] Specifically, the back cover and the display screen 1 together define an installation cavity, in which a control module is disposed, the glass cover plate 1 b of the display screen 1 is away from the back cover, and the heat dissipation film layer 10 is close to the installation cavity.

[0054] The display device according to the embodiment of the present invention can prevent the packaging failure of the camera hole 60 and prevent the intrusion of water vapor.

[0055] The display device includes but is not limited to a mobile phone, a reader, an IPAD, etc.

[0056] According to the method for processing the camera hole 60 on the display screen 1 according to an embodiment of the present invention, a heat dissipation film layer 10, a protective film layer 20, a panel module 30, a polarizer 40 and a glass cover plate 1b are provided, a first sub-hole 11 is prefabricated on the heat dissipation film layer 10, and a second sub-hole 21 is prefabricated on the protective film layer 20. The heat dissipation film layer 10, the protective film layer 20, the panel module 30, the polarizer 40 and the glass cover plate 1b are stacked in sequence from bottom to top, and a third sub-hole 31 and a fourth sub-hole 41 are processed on the panel module 30 and the polarizer 40 by laser melting.

[0057] According to the method of processing the camera hole 60 on the display screen 1 according to an embodiment of the present invention, it is possible to prevent stress concentration in the protective film layer 20 when processing the camera hole 60 on the display screen 1, and prevent the protective module from shrinking and pulling to separate from the panel module 30 to produce a gap, so that when applied to a display device, it is possible to prevent the camera hole 60 from packaging failure and prevent water vapor intrusion.

[0058] Optionally, waterproof sealant is applied in the second sub-hole 21 , the third sub-hole 31 and the fourth sub-hole 41 .

[0059] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A display screen, characterized in that: The display comprises a display body and a glass cover plate, wherein the glass cover plate is stacked on the display body, the display body comprises a heat dissipation film layer, a protective film layer, a panel module, and a polarizer which are stacked in sequence from bottom to top, the display body is provided with a camera hole penetrating the display body, the camera hole comprises a first sub-hole penetrating the heat dissipation film layer, a second sub-hole penetrating the protective film layer, a third sub-hole penetrating the panel module, and a fourth sub-hole penetrating the polarizer, the diameter of the first sub-hole is greater than the diameter of the second sub-hole, the diameter of the second sub-hole is greater than the diameter of the third sub-hole, and the diameter of the third sub-hole is equal to the diameter of the fourth sub-hole; The difference between the diameter of the first sub-hole and the diameter of the second sub-hole is 1 mm to 2 mm; The difference between the diameter of the second sub-hole and the diameter of the third sub-hole or the diameter of the fourth sub-hole is 0.5 mm to 1 mm.

2. The display screen according to claim 1, characterized in that: The second sub-hole, the third sub-hole and the fourth sub-hole are coated with a waterproof sealant layer.

3. The display screen according to claim 2, characterized in that: The edge of the lower end of the waterproof sealant layer extends to the portion of the protective film layer opposite to the first sub-hole.

4. The display screen according to claim 2, characterized in that: The thickness of the waterproof sealant layer is 0.5 mm to 1 mm.

5. The display screen according to claim 1, characterized in that: A positioning rib is provided on a side of the panel module close to the protective film layer, and the positioning rib is located on a portion of the panel module opposite to the second sub-hole.

6. A display device, characterized in that: include: The display screen according to any one of claims 1 to 5; A back cover, wherein the back cover and the display screen define a mounting cavity together, a control module is arranged in the mounting cavity, and a glass cover layer of the display screen is away from the back cover.

7. A method for processing a camera hole on a display screen, characterized in that: The display screen is the display screen according to any one of claims 1 to 5; the method comprises: A heat dissipation film layer, a protective film layer, a panel module, a polarizer and a glass cover are provided. A first sub-hole is prefabricated on the heat dissipation film layer, and a second sub-hole is prefabricated on the protective film layer. The heat dissipation film layer, the protective film layer, the panel module, the polarizer and the glass cover are stacked in sequence from bottom to top, and a third sub-hole and a fourth sub-hole are processed on the panel module and the polarizer by laser melting.

8. The method for machining a camera hole on a display screen according to claim 7, characterized in that: A waterproof sealant is applied in the second sub-hole, the third sub-hole and the fourth sub-hole.

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