Cover plate and display device

Abstract

One or more embodiments of the present specification provide a cover plate and a display device, including a functional hole and a protective film covering the functional hole, the protective film including a first protective film and a second protective film stacked, relative to the first protective film, the second protective film is close to the functional hole; the second protective film is provided with a gasket at a position corresponding to the functional hole, and the gasket can cover the functional hole. One or more embodiments of the present specification provide two layers of protective films on the functional hole of the cover plate, and provide a gasket capable of covering the functional hole at a position corresponding to the functional hole, so as to prevent the functional hole from being contaminated by the gasket, and the structure of the double-layer protective film and the gasket prevents the protective film from having a height difference, thereby preventing the protective film from easily falling off due to the gap caused by the large height difference, and finally avoiding the risk of residual glue while increasing the adhesive area and reducing the risk of the protective film falling off.

Description

Technical Field

[0001] One or more embodiments of the present specification relate to the technical field of electronic equipment accessories, and in particular, to a cover plate and a display device. Background Art

[0002] Existing smart devices such as mobile phones and tablets are equipped with functional holes such as camera holes for functional components such as cameras during the production of cover plates. During use, in order to prevent dust and other dirt from falling into the hole structure or damaging the components in the hole structure, a protective film is usually attached to the outside of the hole structure.

[0003] However, the existing protective film will be concave due to the hole structure, and laying a support structure on the hole structure will make the protective film bulge and generate bubbles. The unevenness of the protective film will cause the protective film itself to fall off easily and interfere with the use of the equipment in the hole structure. Summary of the invention

[0004] In view of this, the purpose of one or more embodiments of this specification is to provide a cover plate and a display device to solve the problem of interference with components in functional holes caused by uneven hole protection films in the prior art.

[0005] Based on the above purpose, one or more embodiments of the present specification provide a cover plate, including a functional hole and a protective film covering the functional hole, the protective film including a first protective film and a second protective film stacked together, relative to the first protective film, the second protective film is close to the functional hole; a gasket is arranged at the position of the second protective film corresponding to the functional hole, and the gasket can cover the functional hole.

[0006] In some embodiments, the first protective film includes a first protective layer and a first adhesive layer, and the second protective film includes a second protective layer and a second adhesive layer; the first protective layer, the first adhesive layer, the second protective layer and the second adhesive layer are stacked in sequence, and, relative to the second protective layer, the second adhesive layer is close to the functional hole.

[0007] In some embodiments, the first protective layer completely covers the first adhesive layer, and the second protective layer completely covers the second adhesive layer.

[0008] In some embodiments, the thickness of the first protective layer and the second protective layer are both 40 to 60 micrometers, and the thickness of the first adhesive layer and the second adhesive layer are both 10 to 15 micrometers.

[0009] In some embodiments, a mounting hole is provided at a position of the second protective film corresponding to the gasket, and the gasket is disposed in the mounting hole.

[0010] In some embodiments, a cross-sectional area of ​​the mounting hole is greater than or equal to a cross-sectional area of ​​the gasket.

[0011] In some embodiments, the thickness of the spacer is equal to the thickness of the second protective film.

[0012] In some embodiments, the cover plate further includes a cover plate substrate and a light-shielding ink layer disposed between the cover plate substrate and the protective film, and the functional hole is disposed in the light-shielding ink layer.

[0013] Based on the same concept, one or more embodiments of the present specification further provide a display device, comprising a cover plate as described in any one of the above items, wherein the cover plate is arranged on the light emitting side of the display device.

[0014] In some embodiments, the display device further includes a camera hole, and the functional hole of the cover plate corresponds to the camera hole.

[0015] From the above description, it can be seen that one or more embodiments of the present specification provide a cover plate and a display device, including a functional hole and a protective film covering the functional hole, the protective film including a first protective film and a second protective film stacked, relative to the first protective film, the second protective film is close to the functional hole; the second protective film is provided with a gasket at a position corresponding to the functional hole, and the gasket can cover the functional hole. One or more embodiments of the present specification provide two layers of protective films on the functional hole of the cover plate, and provide a gasket capable of covering the functional hole at a position corresponding to the functional hole, so as to prevent the functional hole from being contaminated by the gasket, and the structure of the double-layer protective film and the gasket prevents the protective film from having a height difference, thereby preventing the protective film from easily falling off due to the gap caused by the large height difference, and finally avoiding the risk of residual glue while increasing the adhesive area and reducing the risk of the protective film falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate one or more embodiments of the present specification 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, the drawings described below are only one or more embodiments of the present specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of an existing cover plate proposed in one or more embodiments of this specification;

[0018] Figure 2 A schematic diagram of the structure of another conventional cover plate proposed in one or more embodiments of this specification;

[0019] Figure 3 A schematic diagram of the structure of a cover plate proposed in one or more embodiments of this specification. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this specification more clear, this specification is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements, objects or method steps appearing before the word cover the elements, objects or method steps listed after the word and their equivalents, without excluding other elements, objects or method steps. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] As described in the background technology section, the prior art mainly protects functional holes in two ways. Figure 1 As shown in the figure, it is a protection scheme for functional holes on a cover plate in the prior art. The functional hole 100 set in the light-shielding ink layer 500 is set on the cover plate substrate 400. In order to protect the functional hole 100, the prior art directly applies a protective film 200 on the functional hole 100. The protective film colloid is in direct contact with the adhered object, resulting in 100% offset printing of the functional hole and the colloid edge due to colloid precipitation. Figure 2 As shown, another prior art protection solution for the functional holes on the cover plate is provided, in which a gasket is covered on the functional hole 100, and a protective film 200 is covered on the gasket. However, this method of simply adding a gasket will result in a large height difference gap on both sides of the protective film; the adhesive area of ​​the protective film is greatly reduced, and the risk of falling off is increased.

[0023] In view of the above-mentioned actual situation, one or more embodiments of the present specification propose a cover plate, by setting two layers of protective films on the functional holes of the cover plate, and setting gaskets capable of covering the functional holes at the corresponding positions of the functional holes, so as to prevent the functional holes from being contaminated by the gaskets, and the structure of the double-layer protective film and the gasket prevents the protective film from having height differences, thereby preventing the protective film from easily falling off due to gaps caused by large height differences. Ultimately, while avoiding the risk of residual glue, the adhesive area is increased and the risk of protective film falling off is reduced.

[0024] like Figure 3 As shown, it is a schematic diagram of the structure of a cover plate provided by one or more embodiments of the present specification, including: a functional hole 100 and a protective film 200 covering the functional hole 100, the protective film 200 includes a first protective film 210 and a second protective film 220 which are stacked, relative to the first protective film 210, the second protective film 220 is close to the functional hole 100; a gasket 300 is arranged at the position of the second protective film 220 corresponding to the functional hole 100, and the gasket 300 can cover the functional hole 100.

[0025] Among them, the functional hole is mainly a hole design on smart devices such as mobile phones and tablets for realizing specific functions of the device itself, such as a camera hole. In functional holes such as camera holes, in order to better achieve the purpose of shooting, the functional holes are mainly set in the light-shielding ink layer of the cover of such smart devices. The main function of the protective film is to protect the functional hole and isolate the functional hole from the outside world to meet the special needs of the components inside the functional hole (such as cameras, etc.) (clearer shooting, etc.), so the protective film itself can be a transparent film layer. The main body of the protective film can be made of PET material, which is polyethylene terephthalate material, commonly known as polyester resin. The protective film can cover the functional hole by bonding it with an adhesive, or it can be directly integrated with the cover body according to the characteristics of the organic material. The protective film of the PET material is directly formed with the main body of the cover, and its own heat deformation temperature is not high, and it is directly adhered to the functional hole. In a specific application scenario, the protective film is adhered to the functional hole through an adhesive layer, and the adhesive layer can be a PSA layer, that is, a Pressure Sensitive Adhesive, a pressure-sensitive adhesive layer or a pressure-sensitive adhesive layer.

[0026] Afterwards, the protective film is divided into a first protective film and a second protective film which are stacked. The second protective film is closer to the functional hole than the first protective film. The first protective film adheres to the second protective film and achieves complete coverage. The second protective film adheres to the functional hole and also achieves complete coverage. In order to achieve support on the functional hole, to prevent the protective film from sinking into the functional hole and causing offset printing, and to prevent the risk of residual glue caused by direct contact with the protected area, a gasket is set at the position corresponding to the second protective film and the functional hole. In order to cover the functional hole, the cross-sectional area of ​​the gasket must be slightly larger than the cross-sectional area of ​​the functional hole. The gasket is set in the second protective film by opening a hole of appropriate size on the second protective film, inserting a gasket with a thickness equal to that of the second protective film into the hole, and then cooperating with the first protective film to fix the gasket on the functional hole; or by opening a groove with a thickness equal to that of the gasket on the second protective film (the thickness of the gasket itself is less than that of the second protective film), and then inserting the gasket into the groove to fix the gasket on the functional hole. In a specific embodiment, the size of the hole or groove opened on the second protective film can be slightly larger than the size of the gasket. As long as the gap formed does not cause the first protective film to have too large a height difference, it will not affect the effect of this embodiment. In other embodiments, the gasket itself can also slightly protrude from the second protective film as long as the height difference caused is within a certain threshold range. Finally, the material of the gasket can be a transparent non-glue PET gasket, etc.

[0027] From the above description, it can be seen that a cover plate provided in one or more embodiments of the present specification includes a functional hole and a protective film covering the functional hole, the protective film includes a first protective film and a second protective film stacked, relative to the first protective film, the second protective film is close to the functional hole; a gasket is provided at a position corresponding to the second protective film and the functional hole, and the gasket can cover the functional hole. One or more embodiments of the present specification provide two layers of protective films on the functional hole of the cover plate, and provide a gasket capable of covering the functional hole at a position corresponding to the functional hole, so as to prevent the functional hole from being contaminated by the gasket, and the structure of the double-layer protective film and the gasket prevents the protective film from having a height difference, thereby preventing the protective film from easily falling off due to the gap caused by the large height difference, and finally avoiding the risk of residual glue while increasing the adhesive area and reducing the risk of the protective film falling off.

[0028] In some application scenarios, in order to facilitate the stacking of the first protective film, the second protective film and the functional hole, the molding process is simplified. Figure 3As shown, the first protective film 210 includes a first protective layer 211 and a first adhesive layer 212, and the second protective film 220 includes a second protective layer 221 and a second adhesive layer 222; the first protective layer 211, the first adhesive layer 212, the second protective layer 221 and the second adhesive layer 222 are stacked in sequence, and, relative to the second protective layer 221, the second adhesive layer 222 is close to the functional hole 100.

[0029] The first protective film and the second protective film, and the second protective film and the functional hole are adhered to each other by the first adhesive layer and the second adhesive layer, respectively. They can both use high-strength adhesive materials, so that the protective film can be firmly adhered to the cover plate to avoid the lifting of the protective film. Afterwards, the first adhesive layer and the second adhesive layer can use optically clear adhesive (OCA), and by using adhesive materials with high transmittance such as optical adhesive, the protective film has good transmittance above the functional hole; UV curing adhesive, PSA and other high-strength adhesive materials can also be used to reduce the risk of rebound and lifting of the protective film through higher cohesion and stronger adhesion. Afterwards, the first protective layer and the second protective layer can be made of transparent PET material, or other transparent organic materials.

[0030] In some application scenarios, in order to achieve overall flatness. Figure 3 As shown, the first protective layer 211 completely covers the first adhesive layer 212 , and the second protective layer 221 completely covers the second adhesive layer 222 .

[0031] Among them, if the adhesive layer under the protective layer is only partially applied, for example, the adhesive layer under the protective layer is composed of strips of adhesive applied at intervals, and the adhesive itself needs to occupy a thickness, the protective layer will be sunken between the two adhesives, thereby causing the unevenness of the protective layer, and the unevenness of the protective layer itself will seriously affect the use of equipment such as cameras. Therefore, by fully covering, each layer of the protective film is evenly stacked on the adjacent layer, so that the protective film as a whole is finally kept flat.

[0032] In some application scenarios, the thickness of the first protective layer and the second protective layer are both 40 to 60 microns, and the thickness of the first adhesive layer and the second adhesive layer are both 10 to 15 microns.

[0033] The thickness of the first protective layer and the second protective layer and the first adhesive layer and the second adhesive layer can be set within the above range, but are not limited thereto. In a specific application scenario, the thickness of the first protective layer and the second protective layer is 50 microns, the thickness of the first adhesive layer and the second adhesive layer is 12 microns, that is, the thickness of the first protective film and the second protective film is 62 microns.

[0034] In some application scenarios, it is convenient to install a gasket in the second protective film. Figure 3 As shown, a mounting hole is provided at a position of the second protective film 220 corresponding to the gasket 300 , and the gasket 300 is disposed in the mounting hole.

[0035] Among them, the position of the mounting hole is directly above the functional hole, the cross-sectional area of ​​the mounting hole is slightly larger than the cross-sectional area of ​​the functional hole, and the gasket can be placed. In specific application scenarios, the mounting hole does not need to be completely consistent with the cross-sectional size of the gasket. It can be slightly larger than the cross-sectional size of the gasket within a set error range. Within this error range, the first protective film set on the second protective film will not produce a significant height difference, thereby not affecting the adhesive area, and thus will not increase the risk of detachment. The error generated by the existing cutting technology is completely within the acceptable range. That is, in some application scenarios, the cross-sectional area of ​​the mounting hole is greater than or equal to the cross-sectional area of ​​the gasket.

[0036] In some application scenarios, in order to prevent the first protective film from having a height difference due to the protrusion of the gasket. Figure 3 As shown, the thickness of the gasket 300 is equal to the thickness of the second protection film 220 .

[0037] Among them, by the overall cutting method, the gasket is first placed in the installation hole, and then the entire film is cut to ensure the overall flatness. In the specific application scenario, the thickness of the gasket and the second protective film are both 62 microns.

[0038] In some application scenarios, in order to complete the overall construction of the cover. Figure 3 As shown, the cover plate further includes a cover plate substrate 400 and a light-shielding ink layer 500 disposed between the cover plate substrate 400 and the protective film 200 , and the functional hole 100 is disposed in the light-shielding ink layer 500 .

[0039] Among them, the cover substrate is generally the CG layer, that is, the cover glass layer; the light-shielding ink layer is the Ink layer

[0040] Based on the same inventive concept, one or more embodiments of the present specification further provide a display device, comprising a cover plate as described in any of the aforementioned embodiments, wherein the cover plate is arranged on the light emitting side of the display device.

[0041] In some application scenarios, the display device further includes a camera hole, and the functional hole of the cover plate corresponds to the camera hole.

[0042] That is, in a specific application scenario, the functional hole on the cover is mainly used as a camera hole.

[0043] The display device of the above embodiment is used to apply the corresponding cover plate in the above embodiment, and has the beneficial effects of the embodiment of the corresponding cover plate, which will not be described in detail here.

[0044] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the concept of the present disclosure, the technical features in the above embodiments or different embodiments may also be combined, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity. Therefore, any omission, modification, equivalent substitution, improvement, etc. made within the spirit and principle of one or more embodiments of the present specification shall be included in the scope of protection of the present disclosure.

Claims

1. A cover plate, comprising a functional hole and a protective film covering the functional hole, wherein the protective film comprises a first protective film and a second protective film which are stacked, and relative to the first protective film, the second protective film is close to the functional hole; a gasket is arranged at a position of the second protective film corresponding to the functional hole, and the gasket can cover the functional hole; a mounting hole is arranged at a position of the second protective film corresponding to the gasket, and the gasket is arranged in the mounting hole; wherein, The cross-sectional area of ​​the gasket is larger than the cross-sectional area of ​​the functional hole.

2. The cover plate according to claim 1, wherein: The first protective film includes a first protective layer and a first adhesive layer, and the second protective film includes a second protective layer and a second adhesive layer; the first protective layer, the first adhesive layer, the second protective layer and the second adhesive layer are stacked in sequence, and, relative to the second protective layer, the second adhesive layer is close to the functional hole.

3. The cover plate according to claim 2, wherein: The first protective layer completely covers the first adhesive layer, and the second protective layer completely covers the second adhesive layer.

4. The cover plate according to claim 2, wherein: The thickness of the first protective layer and the second protective layer are both 40 to 60 micrometers, and the thickness of the first adhesive layer and the second adhesive layer are both 10 to 15 micrometers.

5. The cover plate according to claim 1, wherein: The cross-sectional area of ​​the mounting hole is greater than or equal to the cross-sectional area of ​​the gasket.

6. The cover plate according to claim 1 or 5, wherein: The thickness of the gasket is equal to the thickness of the second protective film. 7 . The cover plate according to claim 1 , further comprising a cover plate substrate and a light-shielding ink layer disposed between the cover plate substrate and the protective film, wherein the functional hole is disposed in the light-shielding ink layer.

8. A display device, comprising the cover plate according to any one of claims 1 to 7, wherein the cover plate is arranged on a light emitting side of the display device. 9 . The display device according to claim 8 , further comprising a camera hole, wherein the functional hole of the cover plate corresponds to the camera hole.

Images