Display apparatus and mobile terminal

Abstract

A display apparatus (10, 20) and a mobile terminal. The display apparatus (10, 20) comprises a functional add-on area (2000) and a display area (1000), the functional add-on area (2000) comprising a functional area (2100) and a first transition area (2200) located between the display area (1000) and the functional area (2100). The display apparatus (10, 20) comprises a display panel (214) and a cover plate (11, 22) provided on the display panel (214), the cover plate (11, 22) comprising a cover plate main body (221) and a light-shielding layer (222), the cover plate main body (221) being provided with a first recess (221A), the first recess (221A) being located in the first transition area (2200) and surrounding the functional area (2100), and the light-shielding layer (222) being filled in the first recess (221A). The display apparatus (10, 20) avoids the impact of the thickness of the light shielding layer (222) on the thickness of the cover plate main body (221), avoids inconsistency in the optical path differences of light rays passing through different positions of the cover plate (11, 22), and improves the optical imaging quality of a camera (15, 23).

Description

Display device and mobile terminal

[0001] This application claims priority to Chinese patent application No. 202311734212.8 filed on December 14, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of display technology, and more particularly to a display device and a mobile terminal. Background Art

[0003] With the development of display technology, especially full-screen technology, manufacturers currently have various ways to increase the screen-to-body ratio. Among them, the most popular one is to open a hole in the display area of ​​the display device and install an in-plane camera (i.e., under-screen camera technology).

[0004] At present, an ink layer is usually provided on the non-display area of ​​the cover plate relative to the display module to beautify the appearance. When the cover plate and the ink layer are bonded together with adhesive, the ink layer is provided on the non-display area of ​​the cover plate relative to the display module. The ink layer has a certain thickness, resulting in inconsistent thickness of the cover plate at different positions in the light-transmitting area. As a result, the optical path difference of the light entering the camera hole is inconsistent at different positions in the light-transmitting area, resulting in optical path distortion of the incident light entering the camera, which deteriorates the imaging effect of the camera. SUMMARY OF THE INVENTION

[0005] The embodiments of the present application provide a display device and a mobile terminal to alleviate the deficiencies in the related art.

[0006] To achieve the above functions, the technical solutions provided in the embodiments of the present application are as follows:

[0007] An embodiment of the present application provides a display device, comprising an additional function area and a display area located outside the additional function area, wherein the additional function area includes a functional area and a first transition area located between the display area and the functional area; the display device comprises:

[0008] Display panel;

[0009] a cover plate, disposed on the display panel, comprising a cover plate body, the cover plate body being provided with a first groove, the first groove being located in the first transition area and surrounding the functional area;

[0010] Wherein, the cover plate further includes a light shielding layer, and the light shielding layer is filled in the first groove.

[0011] An embodiment of the present application provides a mobile terminal, comprising a terminal body and a display device, wherein the terminal body and the display device are integrated into one body, the display device comprising a function-added area and a display area located outside the function-added area, the function-added area comprising a function area and a first transition area located between the display area and the function area; the display device comprises:

[0012] Display panel;

[0013] a cover plate, disposed on the display panel, comprising a cover plate body, the cover plate body being provided with a first groove, the first groove being located in the first transition area and surrounding the functional area;

[0014] Wherein, the cover plate further includes a light shielding layer, and the light shielding layer is filled in the first groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0016] Figure 1 is a schematic diagram of the structure of a conventional under-screen camera display device;

[0017] Figure 2 is a top view of a display device provided in an embodiment of the present application;

[0018] FIG3 is a first cross-sectional schematic diagram at AA′ in FIG2 ;

[0019] FIG4 is a schematic cross-sectional view of a cover plate provided in an embodiment of the present application;

[0020] FIG5 is a schematic structural diagram of a conventional packaging structure;

[0021] FIG6 is a first cross-sectional top view of a cover plate provided in an embodiment of the present application;

[0022] FIG. 7 is a second cross-sectional schematic diagram at AA′ in FIG. 2 . Modes for Carrying Out the Invention

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0024] Please refer to Figure 1, which is a schematic diagram of the structure of a traditional under-screen camera display device.

[0025] In the existing display device 10, an ink layer 13 is usually provided around the light-transmitting area of ​​the cover plate 11 relative to the display module 12, thereby beautifying the appearance. When the adhesive 14 is used to bond the cover plate 11 and the ink layer 13, due to the certain thickness of the ink layer 13, the thickness of the cover plate 11 at different positions in the light-transmitting area 100 is inconsistent, and the optical path difference of the light entering the camera hole 10A at different positions in the light-transmitting area 100 is inconsistent, resulting in the distortion of the optical path of the incident light entering the camera 15, which has a worsening effect on the imaging effect of the camera 15. Based on this, the present application provides a display device and a mobile terminal that can solve the above defects.

[0026] The embodiments of the present application provide a display device and a mobile terminal. Detailed descriptions are provided below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0027] Please refer to Figures 2 and 3; Figure 2 is a top view of the display device provided in an embodiment of the present application; Figure 3 is a first cross-sectional schematic diagram at AA' in Figure 2.

[0028] This embodiment provides a display device 20, which includes a bending portion 20A and a non-bending portion 20B adjacent to the bending portion 20A; wherein, this embodiment uses Figure 2 as a cross-sectional schematic diagram of the display device when it is in a first state, and the first state of the display device is a flattened state as an example to illustrate the technical solution of this application.

[0029] The display device 20 includes a display module 21 and a cover plate 22 provided on the light-emitting side of the display module 21; the display module 21 includes a stacked support film layer 211, a buffer layer 212, a backplane 213, a display panel 214, a polarizer 215, and a flexible substrate 216; the cover plate 22 is located on the side of the flexible substrate 216 away from the display panel 214.

[0030] Specifically, the flexible substrate 216 is adhered to the polarizer 215 via a first adhesive layer 217, and the buffer layer 212 and the support film layer 211 are adhered via a second adhesive layer. The material of the support film layer 211 includes, but is not limited to, stainless steel (SUS). The material of the flexible substrate 216 includes, but is not limited to, one of transparent polyimide (Colorless and transparent PI, CPI), polyethylene terephthalate (PET), and ultra-thin glass (UTG). The display panel 214 may be an organic light-emitting diode (OLED) display panel 214 or a light-emitting diode (LED) display panel 214. This embodiment does not impose any specific restrictions on this.

[0031] In one embodiment, the display module 21 further includes a heat dissipation film layer, which is located between the buffer layer 212 and the support film layer 211 . The material of the heat dissipation film layer includes but is not limited to foam rubber.

[0032] In one embodiment, the display device 20 includes a function-added area 2000 and a display area 1000 located outside the function-added area 2000, the function-added area 2000 includes a function area 2100 and a first transition area 2200 located between the display area 1000 and the function area 2100, and the first transition area 2200 is arranged around the function area 2100; the display device 20 includes a camera component 23, and the camera component 23 is arranged corresponding to the function area 2100; wherein, the camera component 23 includes but is not limited to a camera.

[0033] Please refer to Figures 2 and 4; Figure 4 is a cross-sectional schematic diagram of the cover provided in an embodiment of the present application; the cover 22 includes a cover body 221, and a first groove 221A is provided on the cover body 221, and the first groove 221A is located in the first transition area 2200 and surrounds the functional area 2100; the cover 22 also includes a light-shielding layer 222, and the light-shielding layer 222 is filled in the first groove 221A; wherein the material of the light-shielding layer 222 includes but is not limited to ink, and the ink is preferably black ink.

[0034] It can be understood that this embodiment avoids the thickness of the light-shielding layer from affecting the thickness of the cover body by setting the light-shielding layer to fill the first groove of the cover body, and the thickness of the light-shielding layer is less than or equal to the depth of the first groove, thereby avoiding the difference in thickness of the cover body at different positions of the functional additional area, and further preventing the difference in optical path difference of light passing through different positions of the cover, thereby ensuring the optical imaging quality of the camera.

[0035] Specifically, please refer to Figure 1 and Figure 4; in one embodiment, the cover body 221 includes a first main body portion 2211 and a second main body portion 2212, the first main body portion 2211 is arranged in the first transition area 2200, and the second main body portion 2212 is arranged in the functional area 2100; wherein, the side of the first main body portion 2211 away from the display module 21 is flush with the side of the second main body portion 2212 away from the display module 21.

[0036] The light-shielding layer 222 includes a first light-shielding portion 222A, which is filled in the first groove 221A. The first light-shielding portion 222A is an annular structure. The sum of the thickness of the first light-shielding portion 222A and the thickness of the first main body 2211 is less than or equal to the thickness of the second main body 2212. Preferably, the thickness of the first light-shielding portion 222A is equal to the depth of the first groove 221A, the width of the first light-shielding portion 222A is equal to the width of the first groove 221A, and the depth d of the first groove 221A is greater than or equal to 1 micron and less than or equal to half the thickness of the cover body 221. , the width w of the first groove 221A is greater than or equal to 0.3 mm and less than or equal to 1 mm, and the sum of the thickness of the first shading portion 222A and the thickness of the first main body portion 2211 is equal to the thickness of the second main body portion 2212, so that the side of the first main body portion 2211 away from the display module 21 is flush with the side of the second main body portion 2212 away from the display module 21, reducing the step difference on the cover plate body 221, improving the flatness of the cover plate body 221, and thereby eliminating the optical path difference of light in the functional additional area 2000 passing through different positions of the cover plate 22, thereby improving the imaging quality of the under-screen camera.

[0037] It should be noted that the thickness of the first shading portion 222A is equal to the depth of the first groove 221A, and the width of the shading layer 222 is equal to the width of the first groove 221A is only for illustration. In another embodiment, the thickness of the shading layer 222 is less than the depth of the first groove 221A; specifically, the absolute value of the difference between the thickness of the shading layer 222 and the depth of the first groove 221A is less than or equal to 2 microns. This embodiment does not impose any specific restrictions on the thickness of the shading layer 222.

[0038] In one embodiment, the cover plate 22 further includes an adhesive layer 223, which is disposed between the cover plate body 221 and the display module 21, and the first groove 221A is located on a side of the cover plate body 221 close to the adhesive layer 223; wherein, the adhesive layer 223 includes a first adhesive portion 2231 disposed in the first transition area 2200 and a second adhesive portion 2232 disposed in the functional additional area 2000, and a side of the first adhesive portion 2231 away from the cover plate body 221 is flush with a side of the second adhesive portion 2232 away from the cover plate body 221.

[0039] The orthographic projection of the adhesive layer 223 on the shading layer 222 covers the shading layer 222, and the cover plate body 221 is bonded to the display module 21 through the adhesive layer 223. The adhesive layer 223 includes but is not limited to optical glue, and the optical glue includes but is not limited to one of solid optical glue and liquid optical glue. When the optical glue is solid optical glue, it is preferred that the solid optical glue is OCA optical glue.

[0040] Specifically, please refer to Figures 2, 4 and 5; Figure 5 is a structural diagram of a traditional packaging structure; it should be noted that the traditional packaging structure 30 shown in Figure 5 can be used to package the under-screen camera display device; in the traditional packaging structure 30, the ink layer 13 is located between the cover plate 11 and the adhesive 14, and the orthographic projection of the adhesive 14 on the cover plate 11 covers the orthographic projection of the ink layer 13 on the cover plate 11, wherein the ink layer 13 has a certain thickness, resulting in inconsistent thickness of the adhesive 14 at different positions in the light-transmitting area 100, and the light entering the camera hole has inconsistent optical path differences at different positions in the light-transmitting area 100, resulting in distortion of the optical path of the incident light entering the camera, which worsens the imaging effect of the camera.

[0041] It can be understood that in this embodiment, the first light-shielding portion 222A is set to fill the first groove 221A, and the thickness of the first light-shielding portion 222A is less than or equal to the depth of the first groove 221A, and the side of the first adhesive portion 2231 away from the cover plate body 221 is flush with the side of the second adhesive portion 2232 away from the cover plate body 221, thereby avoiding the difference in thickness of the adhesive layer 223 at different positions in the function-added area 2000, and further eliminating the optical path difference of light in the function-added area 2000 passing through different positions of the adhesive layer 223, thereby improving the imaging quality of the under-screen camera.

[0042] In one embodiment, the display device 20 further includes a non-display area 3000, which is located on a side of the display area 1000 away from the additional functional area 2000, and the non-display area 3000 is arranged around the display area 1000; a second groove 221B is provided on the cover plate body 221, and the second groove 221B is located in the non-display area 3000 and surrounds the display area 1000; the light-shielding layer 222 includes a second light-shielding portion 222B, and the second light-shielding portion 222B is filled in the second groove 221B, and the absolute value of the difference between the thickness of the second light-shielding portion 222B and the depth of the first groove 221A is less than or equal to 2 microns. This embodiment does not impose any specific restrictions on the thickness of the second light-shielding portion 222B.

[0043] It can be understood that, in this embodiment, a second groove 221B is provided on the cover body 221, and the second light shielding portion 222B is filled in the second groove 221B, thereby effectively ensuring the flatness of the cover body 221 close to the display panel 214. In addition, the second light shielding portion 222B is filled in the second groove 221B, and the thickness of the cover body 221 relative to the display area 1000 is not increased. When the cover body 221 and the flexible substrate 216 are connected by the adhesive layer 223, the phenomenon of separation of the cover body 221 from the flexible substrate 216 due to uneven thickness can be avoided.

[0044] In one embodiment, please refer to Figures 2, 6 and 7; Figure 6 is a first cross-sectional top view of the cover provided in the embodiment of the present application; Figure 7 is a second cross-sectional schematic diagram at AA' in Figure 2.

[0045] It should be noted that in the prior art, a hole is usually designed in the display panel, and a front camera is placed below the hole to realize the camera function of the display product. Due to the misalignment between the film layers of the display product during the folding process, the design of the front camera inside the screen may cause interference between the camera and the screen. In this embodiment, FIG4 is a cross-sectional top view of the cover plate of the display device provided in the embodiment of the present application when it is in the first state, FIG7 is a cross-sectional schematic view of the display device in the second state, and the second state of the display device is a bent state as an example to illustrate the technical solution of the present application.

[0046] In this embodiment, the display device 20 includes a bending portion 20A and a non-bending portion 20B adjacent to the bending portion 20A; the functional additional area 2000 is located in the non-bending portion 20B; wherein, this embodiment takes the first state of the display device 20 as a flattened state and the second state of the display device 20 as a bent state as an example to illustrate the technical solution of the present application.

[0047] A first through hole 214A is provided on the display panel 214, and the first through hole 214A is arranged around the functional area 2100, and the aperture of the first through hole 214A is larger than the width of the functional area 2100; wherein, when the display device 20 is in the first state, the first through hole 214A is coaxially arranged with the functional area 2100; when the display device 20 is in the second state, the central axis L1 of the first through hole 214A is parallel to the central axis L2 of the functional area 2100 and is arranged at intervals.

[0048] Specifically, the functional area 2100 includes an imaging area 2110 corresponding to the field of view of the camera assembly 23, and a second transition area 2120 located between the imaging area 2110 and the first transition area 2200; wherein, when the display device 20 is in the second state, the side of the display panel 214 close to the first through hole 214A is located on the side of the second transition area 2120 away from the imaging area 2110; that is, the display panel 214 is not located in the imaging area 2110; wherein, when the display device 20 is in the second state, in the first direction X, the distances from the two side walls of the first light shielding portion 222A to the straight line where the center axis L3 of the camera assembly 23 is located are not equal, thereby effectively preventing the camera from interfering with the display panel 214 and other problems.

[0049] It should be noted that the display device described in this embodiment can be applicable to an inward-folding or outward-folding display device. The difference between the inward-folding display device and the outward-folding display device is that the displacement direction of the multi-film layer structure is opposite; specifically, in the inward-folding display device, the direction of movement of the multi-film layer structure in the display device is the direction from the bent portion to the non-bent portion; in the outward-folding display device, the direction of movement of the multi-film layer structure in the display device is the direction from the non-bent portion to the bent portion.

[0050] Among them, this embodiment takes the display device as an inward folding display device, the direction of movement of the multi-film layer structure in the display device 20 as the first direction X, and the first direction X as the direction of movement of the multi-film layer structure in the display device, which is the direction from the bending part to the non-bending part, as an example to illustrate the technical solution of the present application.

[0051] In one embodiment, the display device 20 also includes a functional layer 210, which is located on the side of the display panel 214 away from the cover plate 22, and a second through hole 210A is opened on the functional layer 210, and the aperture of the second through hole 210A is equal to the aperture of the first through hole 214A; wherein, the functional layer 210 can be any film layer among the back plate 213, the buffer layer 212 and the support film layer 211. In this embodiment, the functional layer 210 is taken as the back plate 213 as an example to illustrate the technical solution of the present application.

[0052] In this embodiment, when the display device 20 is in the first state, the second through hole 210A is arranged around the functional area 2100; when the display device 20 is in the second state, the side of the functional layer 210 close to the second through hole 210A is located in the functional additional area 2000, and the central axis L1 of the first through hole 214A is located on the side where the central axis L2 of the second through hole 210A is away from the central axis L3 of the camera assembly 23; specifically, when the display device 20 is in the first state, the first through hole 214A, the second through hole 210A and the camera assembly 23 are coaxially arranged; when the display device 2 When 0 is in the second state, a preset offset distance w is defined between the central axis L1 of the first through hole 214A and the central axis L3 of the camera assembly 23; specifically, the central axis L1 of the first through hole 214A is offset from the central axis L3 of the camera assembly 23 along the first direction X by the preset offset distance w; the width of the second transition zone 2120 is greater than the preset offset distance w; the width of the second transition zone 2120 is greater than or equal to 150 microns and less than or equal to 800 microns; the hole-like structure has a first aperture and a second aperture, the first aperture and the second aperture being different; and the camera is nested in the hole-like structure.

[0053] The positive projection of the side of the functional layer 210 close to the second through hole 210A on the shading layer 222 is located within the shading layer 222, thereby preventing the functional layers from shifting and blocking the camera component 23 when the display device 20 is in the second state, thereby improving the imaging effect of the camera component 23 and the stability of the display device 20.

[0054] The display device 20 includes a camera hole 20C, which is arranged corresponding to the functional area 2100. The camera hole 20C passes through the first adhesive layer 217, the polarizer 215, the display panel 214, the back plate 213, the buffer layer 212 and the supporting film layer 211 in sequence; wherein, the camera hole 20C includes the first through hole 214A and the second through hole 210A.

[0055] It should be noted that, since the bending radii of each film layer in the display module 21 are different, and the materials of each film layer are different, when the display device 20 is bent from a flat state to a folded state, each film layer of the display module 21 generates an offset at the camera hole 20C, that is, a negative offset, and there may be differences between the generated offset amounts. This embodiment uses the example of a preset offset distance w between the central axis L1 of the first through hole 214A and the central axis L3 of the camera assembly 23 to illustrate the technical means of this application; wherein, the preset offset distance is selected according to actual production conditions, and this embodiment does not limit it to a specific limitation.

[0056] In one embodiment, the functional area 2100 is a hole-like structure. When the display device 20 is in a first state, the shape of the cross-section of the hole-like structure can be a symmetrical figure such as a circle or a rectangle; when the display device 20 is in a second state, the hole-like structure has a first aperture and a second aperture, and the first aperture is different from the second aperture; specifically, the orthographic projection of the hole-like structure on the display device 20 is located in the second through hole 210A, and the orthographic projection of the hole-like structure on the display device 20 is located in the inner ring of the first light-shielding portion 222A, thereby preventing interference between the camera and the functional layer 210, and between the camera and the first light-shielding portion 222A.

[0057] In one embodiment, in the first direction X, the distance between the side wall of the inner ring of the first light-shielding portion 222A and the side of the functional layer 210 close to the second through hole 210A is greater than the preset offset distance w, thereby effectively preventing the edge of the functional layer 210 from being exposed in the camera hole 20C when the display device 20 is bent, thereby affecting the overall appearance of the display device 20.

[0058] This embodiment provides a mobile terminal, which includes a terminal body and the display device described in any one of the above embodiments, wherein the terminal body and the display device are integrated into one.

[0059] It can be understood that the display device has been described in detail in the above embodiments and will not be repeated here.

[0060] In specific applications, the mobile terminal can be the display screen of a smartphone, tablet computer, laptop computer, smart bracelet, smart watch, smart glasses, smart helmet, desktop computer, smart TV or digital camera, and can even be used on electronic devices with flexible display screens.

[0061] In summary, although the present application has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims.

Claims

1. A display device, wherein: The display device comprises a function-added area and a display area located outside the function-added area, wherein the function-added area comprises a function area and a first transition area located between the display area and the function area; the display device comprises: Display panel; A cover plate, disposed on the display panel, comprising a cover plate body, a first groove is formed on the cover plate body, and the first groove is located in the first transition area and surrounds the functional area; Wherein, the cover plate further includes a light shielding layer, and the light shielding layer is filled in the first groove.

2. The display device according to claim 1, wherein: The display device comprises a bending portion and a non-bending portion adjacent to the bending portion; The display panel is provided with a first through hole, the first through hole is arranged around the functional area, and the aperture of the first through hole is larger than the width of the functional area; wherein, When the display device is in a first state, the first through hole is coaxially arranged with the functional area; When the display device is in the second state, the central axis of the first through hole is parallel to the central axis of the functional area and is spaced apart from each other.

3. The display device according to claim 2, wherein: The display device further includes a camera assembly, and the camera assembly is arranged corresponding to the functional area; The functional area includes an imaging area corresponding to the field of view of the camera assembly, and a second transition area located between the imaging area and the first transition area; Wherein, when the display device is in the second state, a side of the display panel close to the first through hole is located on a side of the second transition area away from the imaging area.

4. The display device according to claim 3, wherein: The display device further comprises a functional layer, the functional layer is located at a side of the display panel away from the cover plate, a second through hole is formed on the functional layer, and the aperture of the second through hole is equal to the aperture of the first through hole; When the display device is in the first state, the second through hole is arranged around the functional area; When the display device is in the second state, the side of the functional layer close to the second through hole is located in the functional additional area, and the central axis of the first through hole is located on the side of the central axis of the second through hole away from the central axis of the camera assembly.

5. The display device according to claim 4, wherein: When the display device is in a first state, the first through hole is coaxially arranged with the camera assembly; When the display device is in the second state, a preset misalignment distance exists between the central axis of the first through hole and the central axis of the camera assembly.

6. The display device according to claim 5, wherein: When the display device is in the second state, the central axis of the first through hole is offset from the central axis of the camera assembly by the preset offset distance along the first direction; and the width of the second transition area is greater than the preset offset distance.

7. The display device according to claim 6, wherein: The width of the second transition zone is greater than or equal to 150 micrometers and less than or equal to 800 micrometers.

8. The display device according to claim 5, wherein: The functional area is a hole-like structure. When the display device is in a first state, the cross-section of the hole-like structure is circular. When the display device is in a second state, the hole-like structure has a first aperture and a second aperture, and the first aperture is different from the second aperture.

9. The display device according to claim 8, wherein: The light shielding layer includes a first light shielding portion, the first light shielding portion is filled in the first groove, and the first light shielding portion is a ring structure; Wherein, when the display device is in the second state, in the first direction, the distances from the two side walls of the first light shielding portion to the straight line where the central axis of the camera assembly is located are not equal.

10. The display device according to claim 9, wherein: The distance between the side wall of the inner ring of the first light shielding portion and the side of the functional layer close to the second through hole is greater than the preset misalignment distance.

11. The display device according to claim 9, wherein: The cover body includes a first main body portion and a second main body portion, the first main body portion is arranged in the first transition area, the second main body portion is arranged in the functional area, and a side of the first main body portion away from the display module is flush with a side of the second main body portion away from the display module; Wherein, the sum of the thickness of the first light shielding portion and the thickness of the first main body portion is less than or equal to the thickness of the second main body portion.

12. The display device according to claim 9, wherein: The display device further comprises a non-display area, the non-display area is located at a side of the display area away from the function-addition area, and the non-display area is arranged around the display area; A second groove is formed on the cover plate body, and the second groove is located in the non-display area and surrounds the display area; The light shielding layer includes a second light shielding portion, the second light shielding portion is filled in the second groove, and the thickness of the second light shielding portion is less than or equal to the depth of the second groove.

13. The display device according to claim 1, wherein: The display device further includes a display module, which includes a stacked support film layer, a buffer layer, a backplane, the display panel, a polarizer, and a flexible substrate; wherein the cover plate is located on a side of the flexible substrate away from the display panel.

14. The display device according to claim 13, wherein: The cover plate further comprises an adhesive layer, wherein the adhesive layer is disposed between the cover plate body and the display module, and the first groove is located on a side of the cover plate body close to the adhesive layer; The adhesive layer includes a first adhesive portion disposed in the first transition zone and a second adhesive portion disposed in the function-added zone, and a side of the first adhesive portion away from the cover plate body is flush with a side of the second adhesive portion away from the cover plate body.

15. The display device according to claim 14, wherein: The orthographic projection of the adhesive layer on the light-shielding layer covers the light-shielding layer.

16. The display device according to claim 15, wherein: The material of the light-shielding layer is black humor, and the material of the adhesive layer is optical adhesive.

17. A mobile terminal, wherein: The mobile terminal comprises a terminal body and a display device, wherein the terminal body and the display device are integrated into one, the display device comprises a function-added area and a display area located outside the function-added area, the function-added area comprises a function area and a first transition area located between the display area and the function area; the display device comprises: Display panel; A cover plate, disposed on the display panel, comprising a cover plate body, a first groove is formed on the cover plate body, and the first groove is located in the first transition area and surrounds the functional area; Wherein, the cover plate further includes a light shielding layer, and the light shielding layer is filled in the first groove.

18. The mobile terminal according to claim 17, wherein: The display device comprises a bending portion and a non-bending portion adjacent to the bending portion; The display panel is provided with a first through hole, the first through hole is arranged around the functional area, and the aperture of the first through hole is larger than the width of the functional area; wherein, When the display device is in a first state, the first through hole is coaxially arranged with the functional area; When the display device is in the second state, the central axis of the first through hole is parallel to the central axis of the functional area and is spaced apart from each other.

19. The mobile terminal according to claim 18, wherein: The display device further includes a camera assembly, and the camera assembly is arranged corresponding to the functional area; The functional area includes an imaging area corresponding to the field of view of the camera assembly, and a second transition area located between the imaging area and the first transition area; Wherein, when the display device is in the second state, a side of the display panel close to the first through hole is located on a side of the second transition area away from the imaging area.

20. The mobile terminal according to claim 19, wherein: The display device further comprises a functional layer, the functional layer is located at a side of the display panel away from the cover plate, a second through hole is formed on the functional layer, and the aperture of the second through hole is equal to the aperture of the first through hole; When the display device is in the first state, the second through hole is arranged around the functional area; When the display device is in the second state, the side of the functional layer close to the second through hole is located in the functional additional area, and the central axis of the first through hole is located on the side of the central axis of the second through hole away from the central axis of the camera assembly.

Images