Backplane and display screen

Abstract

A backplane (1) and a display screen (2). The backplane (1) comprises a backplane body (11), a connection portion (12), and a support portion (13) which are successively connected. The backplane body (11) is disposed on the side of an optical assembly (27) away from a tempered glass (25), and a bearing surface (111) is provided on the side of the backplane body (11) close to the optical assembly (27), the bearing surface (111) being used for supporting the optical assembly (27) and a liquid crystal glass (26). The support portion (13) is used for supporting the tempered glass (25). The backplane (1) supports the optical assembly (27) and the liquid crystal glass (26) by means of the bearing surface (111) of the backplane body (11), and supports the tempered glass (25) by means of the support portion (13), so as to eliminate the structures of a front frame (22), a middle frame (23) and a tempered glass beading strip (24) in an existing display screen (2), and allow the display screen (2) to have a simpler structure, thereby reducing the difficulty in assembling the display screen (2), and improving the efficiency of assembling the display screen (2).

Description

Back panel and display

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202321984197.8, filed on July 25, 2023, entitled “Back Panel and Display Screen,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the technical field of human-computer interaction equipment, and more specifically, relates to a back panel and a display screen. Background Art

[0004] In order to provide convenience for people's lives, there are display screens with human-computer interaction functions on the market. The display screens are composed of a frame, a back panel, a front frame, a middle frame, a tempered glass strip, tempered glass, liquid crystal glass and optical components. Among them, the tempered glass is clamped between the tempered glass strip and the infrared filter strip of the frame, the front frame is installed on the middle frame, the middle frame is installed on the back panel through positioning columns, the liquid crystal glass is placed in the gap between the front frame and the middle frame, and the optical components are placed on the back panel. At present, due to the complex structure and numerous parts of the display screen, the assembly process of the display screen is cumbersome, difficult and inefficient.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a back panel and a display screen to solve the problems in the prior art of a complicated display screen structure and numerous components, which result in a complicated assembly process, great assembly difficulty, and low efficiency.

[0007] In one aspect, the present application provides a backplane for a display screen, wherein the display screen includes tempered glass, liquid crystal glass, and an optical component, wherein the liquid crystal glass and the optical component are stacked, and the tempered glass is disposed on a side of the liquid crystal glass away from the optical component. The backplane includes a backplane body, a connecting portion, and a supporting portion connected in sequence.

[0008] The back panel body is arranged on the side of the optical component away from the tempered glass, and a bearing surface is provided on the side of the back panel body close to the optical component. The connecting part is arranged on the side of the back panel body close to the tempered glass, and is surrounded by the back panel body to form an accommodating cavity. The liquid crystal glass and the optical component are both placed in the accommodating cavity. The bearing surface is used to support the optical component and the liquid crystal glass; the supporting part is used to support the tempered glass.

[0009] In one embodiment of the present application, the connection portion has a limiting surface perpendicular to the bearing surface on one side close to the back panel body; the limiting surface is used to abut against the liquid crystal glass to prevent the liquid crystal glass from sliding out of the accommodating cavity along the limiting surface.

[0010] In one embodiment of the present application, the connecting portion includes a first section and a second section connected in sequence, wherein a side of the first section away from the second section is connected to the back plate body, and a side of the second section away from the first section is connected to the supporting portion, and the limiting surface is provided on a side of the first section close to the accommodating cavity;

[0011] The second section is inclined from a side close to the first section to a side close to the support portion toward a direction away from the accommodating cavity.

[0012] In one embodiment of the present application, the bearing surface is provided with a positioning post, and the positioning post is used to pass through a positioning hole on the optical component.

[0013] In one embodiment of the present application, the back panel further includes a mounting portion, which is disposed on a side of the supporting portion away from the connecting portion, and is used to connect to a frame of the display screen.

[0014] In one embodiment of the present application, a positioning plate is provided on a side of the mounting portion away from the supporting portion, and the positioning plate is used to be inserted into a positioning groove of the frame of the display screen.

[0015] On the other hand, the present application further provides a display screen, comprising:

[0016] A frame and tempered glass, liquid crystal glass and optical components all arranged in the frame, the liquid crystal glass and optical components are stacked, and the tempered glass is arranged on the side of the liquid crystal glass away from the optical components; and, as described above, the back panel is arranged on the side of the optical components away from the tempered glass and connected to the frame; the optical components are arranged on the bearing surface, and the tempered glass is against the support portion.

[0017] In one embodiment of the present application, an adhesive is provided along the circumference of a side of the liquid crystal glass close to the optical component, and the liquid crystal glass is bonded to the optical component through the adhesive.

[0018] In one embodiment of the present application, a limit block is provided on the back panel, and adjacent sides of the limit block respectively abut against the bearing surface and the connecting portion; the limit block abuts against the liquid crystal glass to prevent the liquid crystal glass from slipping.

[0019] In one embodiment of the present application, the frame has a clamping portion located on one side of the supporting portion, and opposite sides of the tempered glass respectively abut against the clamping portion and the supporting portion.

[0020] The backplane and display screen provided by the present application have the following beneficial effects: the backplane comprises a backplane body, a connecting portion, and a supporting portion, which are connected in sequence; the backplane body is disposed on the side of the optical assembly away from the tempered glass; the side of the backplane body closer to the optical assembly is provided with a bearing surface for supporting the optical assembly and liquid crystal glass; and the supporting portion is used to support the tempered glass. The backplane of the present application supports the optical assembly and liquid crystal glass via the bearing surface of the backplane body, and supports the tempered glass via the supporting portion. This eliminates the need for the front frame, middle frame, and tempered glass bead structure in existing display screens, making the structure of the interactive display screen simpler, thereby reducing the difficulty of assembling the interactive display screen and improving its assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] FIG1 is a partial cross-sectional view of a display screen in the prior art of this application;

[0023] FIG2 is an exploded view of the overall structure of the display screen (excluding the frame) provided by the present application;

[0024] FIG3 is a schematic diagram of the overall structure of the backplane provided in this application;

[0025] FIG4 is an enlarged view of point X in FIG3 ;

[0026] FIG5 is a partial cross-sectional view of the backplane provided in this application;

[0027] FIG6 is a partial cross-sectional view of the display screen provided by the present application passing through the central axis of the positioning post;

[0028] FIG7 is a partial cross-sectional view of the axis of the display screen passing through the limit block provided in the present application.

[0029] Among them, the figure marks are: 1. back panel; 11. back panel body; 111. bearing surface; 112. positioning column; 12. connecting part; 121. first section; 1211. limiting surface; 122. second section; 13. supporting part; 14. mounting part; 141. positioning plate; 15. bending part; 16. limiting block; 2. display screen; 21. frame; 211. positioning groove; 212. infrared touch panel; 213. infrared filter strip; 214. clamping part; 22. front frame; 23. middle frame; 24. tempered glass strip; 25. tempered glass; 26. liquid crystal glass; 27. optical component; 271. reflector; 272. diffuser; 273. optical film. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] As described in the background technology, as shown in Figure 1, the display screen 2 is composed of a frame 21, a back panel 1, a front frame 22, a middle frame 23, a tempered glass bead 24, a tempered glass 25, a liquid crystal glass 26 and an optical component 27, wherein the tempered glass 25 is clamped between the tempered glass bead 24 and the infrared filter strip 213 of the frame 21, and the liquid crystal glass 26 and the optical component 27 are installed on the back panel 1 through the front frame 22 and the middle frame 23; when assembling the display screen 2, the tempered glass bead 24 needs to be installed on the frame 21 to fix the position of the tempered glass 25, and the front frame 22 and the middle frame 23 need to be installed on the back panel 1 to fix the position of the liquid crystal glass 26. When assembling the display screen 2, many parts need to be installed, the assembly process is cumbersome, the assembly is difficult, and the efficiency is low.

[0035] In order to solve the above problems, according to one aspect of the present application, as shown in Figures 2 to 7, the present application provides a back panel 1 for use in a display screen 2, the display screen 2 includes tempered glass 25, liquid crystal glass 26 and an optical component 27, the liquid crystal glass 26 and the optical component 27 are stacked, the tempered glass 25 is arranged on the side of the liquid crystal glass 26 away from the optical component 27, the back panel 1 includes a back panel body 11, a connecting portion 12 and a supporting portion 13 connected in sequence; the back panel body 11 is arranged on the side of the optical component 27 away from the tempered glass 25, and a bearing surface 111 is provided on the side of the back panel body 11 close to the optical component 27, the connecting portion 12 is arranged on the side of the back panel body 11 close to the tempered glass 25, and is surrounded by the back panel body 11 to form an accommodating cavity, the liquid crystal glass 26 and the optical component 27 are both placed in the accommodating cavity, the bearing surface 111 is used to support the optical component 27 and the liquid crystal glass 26; the supporting portion 13 is used to support the tempered glass 25.

[0036] Specifically, the back panel 1 supports the optical component 27 and the liquid crystal glass 26 through the bearing surface 111 of the back panel body 11, and supports the tempered glass 25 through the support part 13, which can save the front frame 22, the middle frame 23 and the tempered glass molding 24 structure in the existing display screen 2, making the structure of the display screen 2 simpler, thereby reducing the assembly difficulty of the display screen 2 and improving the assembly efficiency of the display screen 2.

[0037] In addition, the liquid crystal glass 26 and the optical component 27 are placed in a accommodating cavity formed by the back panel body 11 and the connecting part 12. The connecting part 12 can abut against the side of the liquid crystal glass 26 to prevent the liquid crystal glass 26 from sliding away from the optical film 273 of the optical component 27, thereby preventing the optical film 273 from being damaged due to pulling.

[0038] It should be noted that, in this embodiment, as shown in Figures 6 and 7, the optical component 27 includes a reflective sheet 271, a diffuser plate 272 and an optical film 273 stacked in sequence from the back panel body 11 to the liquid crystal glass 26. Specifically, the reflective sheet 271 is placed on the supporting surface 111 of the back panel body 11, and the liquid crystal glass 26 is attached to the optical film 273.

[0039] In one embodiment, as shown in Figures 3-5, the side of the connecting portion 12 close to the back panel body 11 has a limiting surface 1211 perpendicular to the supporting surface 111; the limiting surface 1211 is used to abut against the liquid crystal glass 26 to prevent the liquid crystal glass 26 from sliding out of the accommodating cavity along the limiting surface 1211.

[0040] Specifically, when the liquid crystal glass 26 slides relative to the optical film 273, the limiting surface 1211 provided on the side of the connecting portion 12 close to the back panel body 11 and perpendicular to the supporting surface 111 can abut against the liquid crystal glass 26 to prevent the liquid crystal glass 26 from sliding away from the optical film 273 along the limiting surface 1211, thereby preventing the optical film 273 from being damaged due to pulling; it should be noted that if the angle between the limiting surface 1211 and the supporting surface 111 is an obtuse angle, when the liquid crystal glass 26 slides relative to the optical film 273 of the optical component 27, the liquid crystal glass 26 can slide away from the optical film 273 along the inclined limiting surface 1211, thereby pulling the optical film 273, and making the limiting surface 1211 perpendicular to the supporting surface 111 can prevent the liquid crystal glass 26 from sliding away from the optical film 273 along the limiting surface 1211.

[0041] In a specific embodiment, as shown in Figure 5, the connecting portion 12 includes a first section 121 and a second section 122 connected in sequence, the side of the first section 121 away from the second section 122 is connected to the back panel body 11, the side of the second section 122 away from the first section 121 is connected to the support portion 13, and the limiting surface 1211 is arranged on the side of the first section 121 close to the accommodating cavity; the second section 122 is inclined from the side close to the first section 121 to the side close to the support portion 13 in a direction away from the accommodating cavity.

[0042] Specifically, for the tempered glass 25, after the distance of the connecting portion 12 in the direction from the optical component 27 to the tempered glass 25 is greater than a preset size, the second section 122 of the connecting portion 12 needs to be tilted from the side close to the first section 121 to the side close to the support portion 13 in a direction away from the accommodating cavity, that is, the angle between the second section 122 of the connecting portion 12 and the first section 121 of the connecting portion 12 and the angle between the second section 122 of the connecting portion 12 and the support portion 13 are both obtuse angles, thereby forming a trapezoidal structure at the support of the tempered glass 25 to ensure that the support portion 13 has sufficient supporting force to support the tempered glass 25; for example, for a 0.6 mm thick tempered glass 25, after the distance of the connecting portion 12 in the direction from the optical component 27 to the tempered glass 25 is greater than 2 mm, the second section 122 of the connecting portion 12 needs to be tilted from the side close to the first section 121 to the side close to the support portion 13 in a direction away from the accommodating cavity to ensure that the support portion 13 has sufficient supporting force to support the tempered glass 25.

[0043] In one embodiment, as shown in FIG. 6 , the bearing surface 111 is provided with a positioning post 112 , and the positioning post 112 is used to pass through a positioning hole on the optical component 27 .

[0044] Specifically, the positioning hole is set on the hanging ear of the optical film 273 of the optical component 27. During installation, the positioning column 112 is passed through the positioning hole on the optical film 273 to position the optical film 273 and prevent the position of the optical film 273 from shifting.

[0045] In one embodiment, as shown in FIG. 5 to FIG. 7 , the back panel 1 further includes a mounting portion 14 . The mounting portion 14 is disposed on a side of the support portion 13 away from the connecting portion 12 . The mounting portion 14 is configured to be connected to the frame 21 of the display screen 2 .

[0046] Specifically, the back panel 1 is fixedly connected to the frame 21 of the display screen 2 via the mounting portion 14 , and the mounting portion 14 can be connected to the frame 21 of the display screen 2 in a screw connection manner.

[0047] In a specific embodiment, a positioning plate 141 is provided on a side of the mounting portion 14 away from the supporting portion 13 . The positioning plate 141 is used to be inserted into the positioning groove 211 of the frame 21 of the display screen 2 .

[0048] A positioning plate 141 is provided on one side of the mounting portion 14 away from the supporting portion 13 . The positioning plate 141 can be placed in the positioning groove 211 of the frame 21 of the display screen 2 to position the back panel 1 and ensure the accuracy of the installation position of the back panel 1 .

[0049] In this embodiment, as shown in Figures 5 to 7, a bending portion 15 is provided between the supporting portion 13 of the back panel 1 and the mounting portion 14 of the back panel 1; the bending portion 15 is provided on the side of the supporting portion 13 away from the accommodating cavity, and extends in the direction away from the tempered glass 25. It should be noted that the display screen 2 in this embodiment has a human-computer interaction function, that is, an infrared touch panel 212 and an infrared filter strip 213 are provided in the frame 21 of the display screen 2, and the infrared filter strip 213 is provided on the side of the tempered glass 25 away from the back panel 1; the infrared touch panel 212 is installed in the cavity of the frame 21 and is located on one side of the infrared filter strip 213, and is used to emit infrared light that can pass through the infrared filter strip 213 to obtain the position information of people's fingers when they touch the display screen 2.

[0050] Specifically, installing the infrared touch panel 212 in the cavity of the frame 21 will increase the distance of the frame 21 in the direction from the optical component 27 to the tempered glass 25. The setting of the bending portion 15 can enable the back panel 1 to adapt to the frame 21 whose structure has changed due to the installation of the infrared touch panel 212, so as to prevent the back panel 1 from interfering with the frame 21 when assembling the display screen 2; and for the display screen 2 that does not have the human-computer interaction function, the frame 21 of the display screen 2 does not need to be installed with the infrared touch panel 212 and the infrared filter strip 213, and the distance of the frame 21 in the direction from the optical component 27 to the tempered glass 25 will not increase, and there is no need to add a bending portion 15.

[0051] According to another aspect of the present application, as shown in Figures 6 and 7, an embodiment of the present application provides a display screen 2, which includes a frame 21, a back panel 1 in any of the above embodiments, and a tempered glass 25, a liquid crystal glass 26 and an optical component 27 all arranged in the frame 21, the liquid crystal glass 26 and the optical component 27 are stacked, and the tempered glass 25 is arranged on the side of the liquid crystal glass 26 away from the optical component 27; the back panel 1 is arranged on the side of the optical component 27 away from the tempered glass 25 and is connected to the frame 21; the optical component 27 is arranged on the bearing surface 111, and the tempered glass 25 is against the support portion 13.

[0052] It can be understood that since the display screen 2 includes the above-mentioned back panel 1, the optical component 27, liquid crystal glass 26 and tempered glass 25 are supported by the back panel 1, which can make the structure of the display screen 2 simpler, thereby reducing the assembly difficulty of the display screen 2 and improving the assembly efficiency of the display screen 2.

[0053] Specifically, the optical component 27 and the liquid crystal glass 26 are supported by the bearing surface 111 of the back panel body 11 of the back panel 1, and the tempered glass 25 is supported by the support part 13. This can save the front frame 22, the middle frame 23 and the tempered glass molding 24 structure in the existing display screen 2, making the structure of the display screen 2 simpler, thereby reducing the assembly difficulty of the display screen 2 and improving the assembly efficiency of the display screen 2.

[0054] In one embodiment, an adhesive member (not shown in the figure) is provided along the circumference of one side of the liquid crystal glass 26 close to the optical component 27 , and the liquid crystal glass 26 is bonded to the optical component 27 via the adhesive member.

[0055] Specifically, the liquid crystal glass 26 is bonded to the optical film 273 of the optical component 27 through an adhesive. On the one hand, it can fix the liquid crystal glass 26 on the optical component 27, and on the other hand, it can simplify the installation of the liquid crystal glass 26. The adhesive can be a double-sided tape. It should be noted that the middle part of the liquid crystal glass 26 has a touchable area. When the liquid crystal glass 26 is bonded to the optical component 27 through an adhesive, the adhesive needs to be outside the touchable area to ensure the normal operation of the liquid crystal glass 26.

[0056] In one embodiment, as shown in FIG7 , a limit block 16 is provided on the back panel 1 , and adjacent sides of the limit block 16 abut against the bearing surface 111 and the connecting portion 12 , respectively; the limit block 16 abuts against the liquid crystal glass 26 to prevent the liquid crystal glass 26 from slipping.

[0057] Specifically, by having the stopper 16 abut against the liquid crystal glass 26, the liquid crystal glass 26 can be limited in position, preventing the liquid crystal glass 26 from slipping, that is, preventing the liquid crystal glass 26 from sliding off the optical film 273 of the optical assembly 27, thereby preventing the optical film 273 from being damaged by pulling. In this embodiment, the adjacent two sides of the stopper 16 respectively abut the bearing surface 111 and the connecting portion 12. Specifically, the adjacent two sides of the stopper 16 respectively abut the bearing surface 111 and the stopper surface 1211, and the bearing surface 111 and the stopper surface 1211 are perpendicular. Therefore, the stopper 16 can be abutted against the side of the liquid crystal glass 26 perpendicular to the liquid crystal glass 26, thereby preventing the liquid crystal glass 26 from sliding off the optical film 273 of the optical assembly 27 along the side of the liquid crystal glass 26 against which the stopper 16 abuts, thereby preventing the optical film 273 from being damaged by pulling.

[0058] In one embodiment, as shown in FIG. 6 , the frame 21 has a clamping portion 214 located on one side of the support portion 13 , and opposite sides of the tempered glass 25 respectively abut against the clamping portion 214 and the support portion 13 .

[0059] Specifically, by clamping the tempered glass 25 between the clamping portion 214 and the support portion 13 of the frame 21, the tempered glass 25 can be prevented from shaking during operation; in this embodiment, the opposite sides of the tempered glass 25 are respectively adhered to the clamping portion 214 and the support portion 13. Specifically, the opposite sides of the tempered glass 25 can be adhered to the clamping portion 214 and the support portion 13 by double-sided tape.

[0060] In this embodiment, the frame 21 is provided with a limiting groove for limiting the tempered glass 25 and the back panel 1. In order to ensure the normal operation of the display screen 2, corresponding distance requirements are required between each component, as shown in Figure 7, wherein the distance between the touchable area of ​​the liquid crystal glass 26 and the connecting portion 12 is set to A, the width of the support portion 13 used to support the tempered glass 25 is set to B, the distance between the bending portion 15 and the side wall of the limiting groove is set to C, the distance between the side edge of the tempered glass 25 and the side wall of the limiting groove is set to D, and the width of the clamping portion 214 used to clamp the tempered glass 25 to press the tempered glass 25 (it should be noted that the display screen 2 of this embodiment has a human-computer interaction function, and the side of the tempered glass 25 away from the support portion 13 is pressed together by a part of the frame 21 and the infrared filter strip 213) is set to E.

[0061] Specifically, to ensure that the touchable area of ​​the liquid crystal glass 26 is not blocked when assembling the display screen 2, the distance between the various components should satisfy: E+D<A+B+C; with respect to the width B of the support portion 13 supporting the tempered glass 25, the requirements for tempered glass 25 of different thicknesses are different and can be selected according to actual needs; to prevent the tempered glass 25 from falling out, the width of the clamping portion 214 pressing the tempered glass 25 must satisfy: E>5mm, and when the width of the clamping portion 214 pressing the tempered glass 25 meets the above requirements, it can provide convenience for the assembly personnel in the gluing work.

[0062] In summary, the back panel 1 and the display screen 2 having the back panel 1 provided in this embodiment have at least the following beneficial technical effects:

[0063] The back panel 1 supports the optical component 27 and the liquid crystal glass 26 through the bearing surface 111 of the back panel body 11, and supports the tempered glass 25 through the support part 13, which can save the front frame 22, the middle frame 23 and the tempered glass molding 24 structure in the existing display screen 2, making the structure of the display screen 2 simpler, thereby reducing the assembly difficulty of the display screen 2 and improving the assembly efficiency of the display screen 2.

[0064] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A back panel, used in a display screen (2), the display screen (2) comprising a tempered glass (25), a liquid crystal glass (26) and an optical component (27), the liquid crystal glass (26) and the optical component (27) being stacked, the tempered glass (25) being arranged on a side of the liquid crystal glass (26) away from the optical component (27), the back panel (1) comprising a back panel body (11), a connecting portion (12) and a supporting portion (13) connected in sequence; The back panel body (11) is arranged on a side of the optical component (27) away from the tempered glass (25), and a bearing surface (111) is arranged on a side of the back panel body (11) close to the optical component (27); the connecting portion (12) is arranged on a side of the back panel body (11) close to the tempered glass (25), and is surrounded by the back panel body (11) to form a receiving cavity, and the liquid crystal glass (26) and the optical component (27) are both placed in the receiving cavity, and the bearing surface (111) is used to support the optical component (27) and the liquid crystal glass (26); the supporting portion (13) is used to support the tempered glass (25).

2. A backplane according to claim 1, wherein: The connection portion (12) has a limiting surface (1211) perpendicular to the bearing surface (111) on one side of the back panel body (11); the limiting surface (1211) is used to abut against the liquid crystal glass (26) to prevent the liquid crystal glass (26) from sliding out of the accommodating cavity along the limiting surface (1211).

3. A backplane according to claim 2, wherein: The connecting portion (12) comprises a first section (121) and a second section (122) connected in sequence, the side of the first section (121) away from the second section (122) is connected to the back plate body (11), the side of the second section (122) away from the first section (121) is connected to the supporting portion (13), and the limiting surface (1211) is arranged on a side of the first section (121) close to the accommodating cavity; The second section (122) is inclined from a side close to the first section (121) to a side close to the support portion (13) in a direction away from the accommodating cavity.

4. A backplane according to claim 1, wherein: The bearing surface (111) is provided with a positioning column (112), and the positioning column (112) is used to penetrate a positioning hole on the optical component (27).

5. According to a back panel according to any one of claims 1 to 4, the back panel (1) further comprises a mounting portion (14), the mounting portion (14) being arranged on a side of the supporting portion (13) away from the connecting portion (12), the mounting portion (14) being used to be connected to a frame (21) of the display screen (2).

6. A back plate according to claim 5, wherein: A positioning plate (141) is provided on one side of the mounting portion (14) away from the supporting portion (13), and the positioning plate (141) is used to be inserted into a positioning groove (211) of the frame (21) of the display screen (2).

7. A display screen, comprising: A frame (21), and a tempered glass (25), a liquid crystal glass (26), and an optical component (27) all arranged in the frame (21), wherein the liquid crystal glass (26) and the optical component (27) are arranged in a stacked manner, and the tempered glass (25) is arranged on a side of the liquid crystal glass (26) away from the optical component (27); The back panel (1) as described in any one of claims 1 to 6, wherein the back panel (1) is arranged on a side of the optical component (27) away from the tempered glass (25), and is connected to the frame (21); the optical component (27) is arranged on the bearing surface (111), and the tempered glass (25) is against the supporting portion (13).

8. A display screen according to claim 7, wherein: An adhesive is provided along the circumference of one side of the liquid crystal glass (26) close to the optical component (27), and the liquid crystal glass (26) is bonded to the optical component (27) via the adhesive.

9. A display screen according to claim 7, wherein: A limit block (16) is provided on the back plate (1), and adjacent two sides of the limit block (16) respectively abut against the bearing surface (111) and the connecting portion (12); the limit block (16) abuts against the liquid crystal glass (26) to prevent the liquid crystal glass (26) from slipping off.

10. A display screen according to claim 7, wherein: The frame (21) has a clamping portion (214) located on one side of the supporting portion (13), and opposite sides of the tempered glass (25) respectively abut against the clamping portion (214) and the supporting portion (13).

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