Ultrathin display screen

Abstract

The utility model provides an ultrathin display screen. The ultrathin display screen comprises a shell, a circuit board, a backlight source assembly, a display assembly and a glass plate, wherein the circuit board, the backlight source assembly, the display assembly and the glass plate are contained in the shell. The shell comprises a bottom plate and a plurality of side plates which are connected end to end so as to define an accommodating space with an opening; the bottom plate comprises a plate body part and a cover body part, a through hole is formed in the plate body part, and the cover body part seals the through hole and is detachably and fixedly connected with the plate body part; the size of the through hole is greater than or equal to that of the circuit board, so that the circuit board can be mounted in the accommodating space through the through hole; the surface, far away from the opening, of the backlight source assembly is fixedly attached to the plate body part, and the circuit board is arranged close to the surface, far away from the opening, of the backlight source assembly or is fixedly attached to the surface, far away from the opening, of the backlight source assembly. The ultrathin display screen has the advantages of being light, thin, convenient to maintain and the like.

Description

Technical Field

[0001] The utility model relates to the field of displays, and in particular to an ultra-thin display screen. Background Art

[0002] With the development of automotive intelligence, the number of in-vehicle display screens is increasing, and their sizes are also getting larger. Due to the limited space inside the vehicle, users expect the thickness of the display screen to be thinner.

[0003] In the prior art, the display screen is composed of a housing, a front frame, a cover plate, a liquid crystal display component, a backlight component, and an aluminum shell. The cover plate, the liquid crystal component, and the backlight component are fixed in the housing by the cooperation of the aluminum shell, the front frame, and fixing parts (such as screws). However, such a display screen has a relatively large thickness, making it difficult to meet the current users' expectations for a thin and light display screen. Moreover, when the display screen fails, it is very inconvenient to repair. Summary of the Utility Model

[0004] Based on the above situation, the main purpose of the present utility model is to provide an ultra-thin display screen, which can reduce the thickness of the existing display screen and is convenient for repair.

[0005] To achieve the above purpose, the technical solution adopted by the present utility model is as follows: The present utility model provides an ultra-thin display screen, which includes a housing, and a circuit board, a backlight component, a display component, and a glass plate accommodated in the housing;

[0006] The housing includes a bottom plate and a plurality of side plates connected end to end. The plurality of side plates are connected to the bottom plate and enclose a receiving space with an opening; the circuit board, the backlight component, the display component, and the glass plate are sequentially received in the receiving space; the glass plate covers the opening;

[0007] The bottom plate includes a plate body part and a cover body part. A through hole is formed in the plate body part, and the cover body part closes the through hole and is detachably and fixedly connected to the plate body part;

[0008] The size of the through hole is greater than or equal to the size of the circuit board, so that the circuit board can be installed in the receiving space through the through hole;

[0009] The surface of the backlight component away from the opening is fixedly attached to the plate body part, and the circuit board is disposed close to the surface of the backlight component away from the opening, or is fixedly attached to the surface of the backlight component away from the opening.

[0010] Preferably, the circuit board includes a board member and a plurality of electronic components disposed on the board member, and the plurality of electronic components are disposed on the surface of the board member away from the backlight component;

[0011] Some of the electronic components are accommodated in the accommodation space, and some of the electronic components penetrate through the cover portion to be exposed outside the housing.

[0012] Preferably, a groove is formed on the surface of the plate portion close to the backlight assembly; the groove extends to the edge portion of the plate portion and the through hole.

[0013] The ultra-thin display screen further includes an FPC, which is disposed in the groove and is electrically connected to the circuit board, the backlight assembly, and the display assembly.

[0014] Preferably, a part of the side surface of one or more of the display assembly and the backlight assembly is detachably or non-detachably fixed to the side plate, and another part forms a wiring channel with the side plate;

[0015] The wiring channel corresponds to the position of the groove.

[0016] Preferably, the backlight assembly includes a light bar, a reflective sheet, a light guide plate, and a plurality of optical films stacked in sequence; the optical films are brightness enhancement films and / or diffusion films.

[0017] The light bar is disposed on one side of the light guide plate close to the wiring channel; the surface of the reflective sheet away from the open end is fixedly attached to the plate portion.

[0018] Preferably, the plate portion includes a plurality of first adhesive bonding regions and second adhesive bonding regions, and a first type of adhesive and a second type of adhesive are respectively provided in the first adhesive bonding regions and the first adhesive bonding regions to fixedly attach the surface of the backlight assembly away from the open end to the plate portion;

[0019] The first type of adhesive includes a support sheet and adhesive layers on opposite surfaces of the support sheet; the second type of adhesive is a liquid-curable adhesive.

[0020] Preferably, the bottom plate is rectangular, the first adhesive bonding regions are disposed close to the edge of the bottom plate, and are disposed at least in three directions of the bottom plate;

[0021] The second adhesive bonding regions are formed between adjacent first adhesive bonding regions.

[0022] Preferably, the display screen includes a base and a connecting member, one end of the connecting member is connected to the base, and the other end is connected to the housing by screws;

[0023] The position where the connecting member is screwed to the housing corresponds to the position where the first type of adhesive is located.

[0024] Preferably, a spacing is provided between the backlight assembly and the display assembly, and the distance between the two is 0.5-1 mm;

[0025] The glass plate is fully attached to the display assembly, and the side surface of the glass plate is attached to the side plate.

[0026] Preferably, the ultra-thin display screen is a vehicle-mounted display screen, and the thickness of the vehicle-mounted display screen is less than or equal to 15 mm; the size of the vehicle-mounted display screen is 6-14 inches.

[0027] The surface of the backlight assembly of the ultra-thin display screen provided by the present invention, which is away from the open end, is attached and fixed to the plate body portion, and the circuit board is arranged closely against the surface of the backlight assembly away from the open end, or is attached and fixed to the surface of the backlight assembly away from the open end, which can greatly reduce the thickness of the ultra-thin display screen. The present invention abandons the traditional fixing method of fixing the backlight assembly by means of fixing parts such as an aluminum shell and screws, reduces the product components, reduces the spacing between the internal components of the product, and makes it easier for the product to achieve thinness and lightness. The size of the through hole on the bottom plate is greater than or equal to the size of the circuit board, so that the circuit board can pass through the through hole, which is convenient for attaching and fixing it to the surface of the backlight assembly away from the open end, or closely against the surface of the backlight assembly away from the open end. When maintenance is required, it is convenient for the user to open the cover portion to maintain the circuit board.

[0028] Other beneficial effects of the present invention will be described in the specific implementation manner through the introduction of specific technical features and technical solutions. Those skilled in the art should be able to understand the beneficial technical effects brought by the technical features and technical solutions through these introductions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred embodiments of the ultra-thin display screen according to the present invention will be described below with reference to the accompanying drawings. In the drawings:

[0030] Figure 1 and Figure 2 are the three-dimensional structural schematic diagrams of the ultra-thin display screen of the present invention from different perspectives.

[0031] Figure 3 and Figure 4 are the three-dimensional structural schematic diagrams of the housing of the ultra-thin display screen of the present invention from different perspectives.

[0032] Figure 5 and Figure 6 are the exploded structural schematic diagrams of the ultra-thin display screen of the present invention from different perspectives.

[0033] Description of the reference numerals:

[0034] 10. Ultra-thin display screen; 11. Housing; 11a. Receiving space; 11b. Open end; 110. Bottom plate; 111. Plate body part; 111a. First recessed area; 111c. Mounting hole; 111b. Second recessed area; 112. Cover body part; 113. Through hole; 120. Side plate; 121. First side plate; 122. Second side plate; 123. Third side plate; 124. Fourth side plate; 13. Backlight assembly; 13a. First surface; 13b. Second surface; 131. Reflective sheet; 132. Light bar; 133. Light guide plate; 134. Lower diffusion sheet; 135. Upper brightness enhancement film; 136. DBEF; 14. Display assembly; 15. Glass plate; 16. FPC; 17. Connecting piece; 18. Base; 140. Circuit board; 19. Protective film. Detailed implementation manner

[0035] The following describes the present utility model based on embodiments, but the present utility model is not limited to these embodiments. In the following detailed description of the present utility model, some specific details are described in detail. In order to avoid obscuring the essence of the present utility model, well-known methods, processes, procedures, and components are not described in detail.

[0036] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0037] Unless the context clearly requires otherwise, the words such as "including", "comprising" and the like in the whole specification and claims should be interpreted as the meaning of including rather than exclusive or exhaustive; that is, the meaning of "including but not limited to".

[0038] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0039] The present utility model provides an ultra-thin display screen, and the ultra-thin display screen includes a housing, and a circuit board, a backlight assembly, a display assembly, and a glass plate accommodated in the housing;

[0040] The housing includes a bottom plate and a plurality of side plates connected end to end. The plurality of side plates are connected to the bottom plate and enclose a receiving space with an open end; the circuit board, the backlight assembly, the display assembly, and the glass plate are sequentially received in the receiving space; the glass plate covers the open end;

[0041] The bottom plate includes a plate body part and a cover body part. A through hole is formed in the plate body part, and the cover body part closes the through hole and is detachably and fixedly connected to the plate body part;

[0042] The size of the through hole is greater than or equal to the size of the circuit board, so that the circuit board can pass through the through hole and be installed in the receiving space;

[0043] The surface of the backlight assembly away from the open end is fixedly attached to the plate body portion, and the circuit board is disposed closely against the surface of the backlight assembly away from the open end, or is fixedly attached to the surface of the backlight assembly away from the open end.

[0044] In the ultra-thin display screen provided by the present utility model, the surface of the backlight assembly away from the open end is fixedly attached to the plate body portion, and the circuit board is disposed closely against the surface of the backlight assembly away from the open end, or is fixedly attached to the surface of the backlight assembly away from the open end, which can greatly reduce the thickness of the ultra-thin display screen. The present utility model abandons the traditional fixing method of fixing the backlight assembly by means of fixing parts such as an aluminum shell and screws, reduces the product components, reduces the distance between the internal components of the product, and makes it easier for the product to achieve thinness and lightness. The size of the through hole on the bottom plate is greater than or equal to the size of the circuit board, so that the circuit board can pass through the through hole, which is convenient for fixedly attaching it to the surface of the backlight assembly away from the open end, or closely against the surface of the backlight assembly away from the open end. When maintenance is required, it is convenient for the user to open the cover portion to maintain the circuit board.

[0045] Please refer to Figures 1 to 6 , the present utility model provides an ultra-thin display screen 10 of a backlight, and the ultra-thin display screen 10 can be applied to fields such as automobiles, household appliances, and consumer electronics. As an embodiment, the ultra-thin display screen 10 is particularly suitable for use as an in-vehicle display device in the automotive field, and its display size can be 6-14 inches. It can be understood that its specific size is not limited and can be adjusted according to actual needs.

[0046] The ultra-thin display screen 10 includes a housing 11 for accommodating various components. As an embodiment, the ultra-thin display screen 10 further includes a circuit board 140, a backlight assembly 13, a display assembly 14, and a glass plate 15 accommodated in the housing 11; the circuit board 140, the backlight assembly 13, the display assembly 14, and the glass plate 15 are sequentially accommodated in the receiving space 11a, wherein the circuit board 140 is disposed closer to the bottom plate 110 than the glass plate 15.

[0047] As an embodiment, the housing 11 includes a bottom plate 110 and a plurality of side plates 120 connected end to end, and the plurality of side plates 120 are connected to the bottom plate 110 and enclose a receiving space 11a with an open end 11b. It can be understood that at least a part of the bottom plate 110 and the side plates 120 are integrally formed, or can be fixedly connected together after being separately formed. When the circuit board 140, the backlight assembly 13, the display assembly 14, and the glass plate 15 are sequentially accommodated in the receiving space 11a, the glass plate 15 covers the open end 11b.

[0048] As a specific embodiment, the bottom plate 110 is rectangular, and the side plates 120 include opposite first side plate 121, second side plate 122, third side plate 123 and fourth side plate 124. The first side plate 121 and the third side plate 123 are arranged oppositely, the second side plate 122 and the fourth side plate 124 are arranged oppositely, and the first side plate 121, the second side plate 122, the third side plate 123 and the fourth side plate 124 are connected end to end and are connected to the bottom plate 110 at four different orientations of the bottom plate 110. The bottom plate 110 and the first side plate 121, the second side plate 122, the third side plate 123 and the fourth side plate 124 enclose a receiving space 11a, and the receiving space 11a has an opening 11b. It can be understood that the bottom plate 110 being rectangular means that its outer contour is generally rectangular, and it is not required to be a standard rectangle. Designs such as chamfering or rounding can be made at the corners.

[0049] As an embodiment, the bottom plate 110 includes a plate body portion 111 and a cover body portion 112. A through hole 113 is formed in the plate body portion 111, and the cover body portion 112 closes the through hole 113 and is detachably and fixedly connected to the plate body portion 111. As an embodiment, the surfaces of the plate body portion 111 and the cover body portion 112 away from the backlight assembly 13 are substantially flush.

[0050] As an embodiment, the size of the through hole 113 is greater than or equal to the size of the circuit board 140, so that the circuit board 140 can be installed in the receiving space through the through hole 113, and it is also convenient for the user to open the cover body portion 112 to maintain the circuit board 140. As an embodiment, the circuit board 140 passes through the through hole 113 and is adhesively fixed to the backlight assembly 13, which is beneficial to reducing the product thickness.

[0051] As an embodiment, the circuit board 140 is fixedly attached to the surface of the backlight assembly 13 away from the opening 11b.

[0052] As an embodiment, the circuit board 140 can also be arranged closely against the surface of the backlight assembly 13 away from the opening 11b without being attached to the surface of the backlight assembly 13 away from the opening 11b.

[0053] As an embodiment, the circuit board 140 includes a board member 1401 and a plurality of electronic components 1402 disposed on the board member 1401. The plurality of electronic components 1402 are disposed on the surface of the board member 1401 away from the backlight assembly 13; some of the electronic components 1402 are received in the receiving space 11a, and some of the electronic components 1402 penetrate through the cover body portion 112 to be exposed outside the housing 11. Thus, the electronic components 1402 with a relatively high height can be exposed outside the housing 11, avoiding being completely received in the receiving space 11a and causing an increase in the product thickness. The electronic components 1402 with a relatively high height can be wiring terminals or the like.

[0054] As an embodiment, the board body portion 111 is provided with first recessed areas 111a in three different orientations of the bottom plate 110, that is, at least one first recessed area 111a is provided in three different orientations of the bottom plate 110. A second recessed area 111b (i.e., a groove) is provided in another orientation different from the orientation where the first recessed areas 111a are provided, and the first recessed areas 111a and the second recessed area 111b have different functions (introduced below). The second recessed area 111b and the first recessed areas 111a are located in different orientations of the bottom plate 110. The second recessed area 111b is close to the first side plate 121, and the first recessed areas 111a are close to the second side plate 122, the third side plate 123, and the fourth side plate 124. The second recessed area 111b extends to the edge of the bottom plate 110 in its corresponding orientation, that is, extends to the first side plate 121, facilitating wire routing. Further, the second recessed area 111b extends to the through hole 113, facilitating electrical connection.

[0055] As an embodiment, the second recessed area 111b has at least a first depth and a second depth.

[0056] The backlight assembly 13 includes an opposite first surface 13a and a second surface 13b. The first surface 13a is the surface away from the display assembly 14, and the second surface 13b is the surface close to the display assembly 14; the first surface 13a of the backlight assembly 13 is adhesively fixed to the bottom plate 110. It can be understood that adhesively fixing the first surface 13a to the bottom plate 110 does not require the entire first surface 13a to be in contact with the bottom plate 110, as long as it is ensured that at least a part of the first surface 13a is in contact with the bottom plate 110 to achieve adhesive fixation. Specifically, the surface of the backlight assembly 13 away from the opening 11b is in contact and fixed with the board body portion 111.

[0057] As an embodiment, the first surface 13a and the bottom plate 110 are adhesively fixed by a first type of glue (not shown) and a second type of glue (not shown); specifically, the first surface 13a and the plate body portion 111 are adhesively fixed by the first type of glue and the second type of glue. Among them, the first type of glue is a glue with both bonding and supporting functions, such as 3M or other VHB (Very High Bond) tapes visible on the market. The second type of glue mainly plays a bonding role, such as structural glue visible on the market. When it is just applied, due to its liquid state, it has the advantage of an adjustable form, and then it can be cured to achieve the bonding effect. During bonding, the supporting effect of the first type of glue can make the first surface 13a fit with the bottom plate 110 while ensuring a small distance between the two, so as to facilitate the formation of a space between the two to accommodate other components, such as the circuit board 140. As an embodiment, the distance between the bottom plate 110 (the area without the first recessed area 111a and the second recessed area 111b) and the backlight assembly 13 is 0.3 - 0.8 mm, and it can further be 0.4 - 0.8 mm, 0.5 - 0.8 mm, 0.5 - 0.6 mm.

[0058] As an embodiment, among them, the first type of glue includes a support sheet and adhesive layers located on opposite surfaces of the support sheet, and the second type of glue is a liquid-curable adhesive, and is further preferably structural glue.

[0059] As an embodiment, the first type of glue is at least located in three different orientations of the bottom plate 110; the second type of glue is arranged between the first type of glue. Specifically, the first type of glue is arranged in the first recessed area 111a, and the first recessed area 111a becomes the first glue bonding area; the first type of glue is arranged in the first recessed areas 111a located in three different orientations. The setting of the first recessed area 111a facilitates positioning the bonding position of the first type of glue, avoiding random bonding that causes the backlight assembly 13 to tilt relative to the bottom plate 110 and affecting the light output effect. As an embodiment, the first type of glue is in the form of a glue strip, and the first type of glue in each first recessed area 111a can be one or more, and the first type of glue covers at least a part of the first recessed area 111a.

[0060] As an embodiment, the thickness of the first type of glue is 0.3 - 1 mm; after the bonding is completed, the thickness of the first type of glue is greater than the thickness of the second type of glue; the distance between the bottom plate 110 and the backlight assembly 13 is 0.3 - 0.8 mm, that is, the thickness of the second type of glue after curing is 0.3 - 0.8 mm, and it can further be 0.4 - 0.8 mm, 0.5 - 0.8 mm, 0.5 - 0.6 mm.

[0061] The area of the plate body portion 111 where the second type of glue is arranged forms a second glue bonding area. As an embodiment, the second glue bonding area is formed between adjacent first glue bonding areas.

[0062] As an embodiment, an FPC 16 is disposed in the second recessed area 111b, and the FPC 16 is electrically connected to the circuit board 140, the backlight assembly 13, and the display assembly 14; one or more parts of the side surface of the display assembly 14 and the backlight assembly 13 are detachably fixed (such as snap connection) or non-detachably fixed (such as adhesive fixation) to the side plate 120, and the other part forms a wiring channel S with the side plate 120; the wiring channel corresponds to the position of the second recessed area 111b, and the two are located on the same orientation of the bottom plate 110, that is, the wiring channel S is located inside the first side plate 121.

[0063] One or more parts of the side surface (the surface in the thickness direction) of the display assembly 14 and the backlight assembly 13 are adhesively fixed to the side plate 120. As a specific embodiment, the side part of the display assembly 14 is adhesively fixed to the side plate 120, and the side part of the backlight assembly 13 is adhesively fixed to the side plate 120. The adhesive fixation of the side parts of the two to the side plate 120 can realize the fixed connection between the two and the housing 11, and there are still some side surfaces that are not adhesively fixed to the side plate 120, so that a wiring channel is formed between the two and the side plate 120 for wiring.

[0064] As an embodiment, the side surface of the glass plate 15 is completely adhesively fixed to the side plate 120, which not only realizes fixation but also plays a sealing role. In some embodiments, a protective film 19, such as an explosion-proof film, an anti-peeping film, etc., can be pasted on the surface of the glass plate 15.

[0065] As an embodiment, the backlight assembly 13 includes a lamp bar 132 and a reflective sheet 131, a light guide plate 133, and a plurality of optical films stacked in sequence; the optical films are brightness enhancement films and / or diffusion films. The lamp bar 132 is disposed on one side of the light guide plate 133 close to the wiring channel, which is convenient for the FPC 16 connecting the lamp bar 132 to pass through the wiring channel and enter the second recessed area 111b.

[0066] As an embodiment, the backlight assembly 13 is composed of a lamp bar 132 and a reflective sheet 131, a light guide plate 133, a lower diffusion sheet 134, an upper brightness enhancement sheet 135, and a DBEF (dual brightness enhancement film) 136 stacked; the lamp bar 132 is disposed on one side of the light guide plate 133, and the surface of the reflective sheet 131 away from the light guide plate 133 is the first surface 13a; the display assembly 14 is an LCD assembly, and the glass plate 15 is fully attached to the surface of the LCD assembly. In this way, while optimizing the number of components, the product function is realized and the product thickness is reduced.

[0067] As an embodiment, the distance between the LCD assembly and the DBEF 136 is 0.5 - 1 mm. Further, it can be 0.5 - 0.8 mm, 0.5 - 0.7 mm, 0.5 - 0.6 mm.

[0068] As an embodiment, the distance between the surface of the glass plate 15 away from the display component 14 and the surface of the plate body portion 111 away from the backlight component 13 is less than or equal to 15 mm. Further, the distance between the surface of the glass plate 15 away from the display component 14 and the surface of the plate body portion 111 away from the backlight component 13 is less than or equal to 13 mm.

[0069] As an embodiment, the side plate 120 can be higher than the glass plate 15 to play a role in protecting the glass plate 15.

[0070] As an embodiment, the ultra-thin display screen 10 is a vehicle-mounted display screen with a thickness less than or equal to 15 mm.

[0071] As an embodiment, the size of the vehicle-mounted display screen is 6 - 14 inches.

[0072] As an embodiment, the ultra-thin display screen 10 further includes a base 18 and a connecting member 17, and the base 18 is connected to the housing 11 through the connecting member 17. As an embodiment, the connecting member 17 is connected to the housing 11 by screws. The position where the connecting member 17 is screwed to the housing 11 corresponds to the position where the first type of glue is located.

[0073] As an embodiment, the bottom plate 110 is provided with mounting holes 111c in the first recessed areas 111a in two opposite directions; the first type of glue covers the mounting holes 111c. When fixing members such as screws are installed in the mounting holes 111c, it is easy to drop iron filings after a long time, which affects the operation of the product. For example, the iron filings affect the normal operation of the circuit board 140. Covering the mounting holes 111c with the first type of glue can avoid this situation and also realizes the structural reuse of the first type of glue.

[0074] As an embodiment, when the ultra-thin display screen 10 is installed, after the FPC 16 is installed, the reflective sheet 131 can be bonded and fixed to the bottom plate 110, and then the light guide plate 133, upper / lower diffusion sheets, upper / lower brightness enhancement films, DBEF 136, etc. are stacked. After the light bar 132 is installed, adhesive is coated so that the light bar 132, and parts such as the light guide plate 133, upper / lower diffusion sheets, upper / lower brightness enhancement films, DBEF 136, etc. are adhesively fixed to the side of the housing 11. A routing channel for the FPC 16 is formed between the side plate 120 at the position where the side of the light bar 132 is not adhesively fixed. The distance between the display component 14 and the backlight component 13 is set, and it is fixed to the side plate 120 with glue. The FPC 16 on the light bar 132 can pass through the routing channel and enter the second recessed area 111b (or the FPC 16 can pass through the routing channel from the second recessed area 111b and be plugged into the light bar 132). The FPC 16 extends out from the routing channel and is plugged into the display component 14 (the display component 14 and the FPC 16 can also be fixedly connected all the time). The FPC 16 connected to the light bar 132 and the FPC 16 connected to the display component 14 are respectively located in the second recessed area 111b at the first depth and the second depth. Then, the glass plate 15 is fully attached to the display component 14, and all sides of the glass plate 15 are adhesively fixed to the side plate 120. Finally, the cover part 112 is removed, the circuit board 140 is attached to the reflective sheet 131, and then the cover part 112 is covered again.

[0075] As an embodiment, the circuit board 140 can be installed before the reflective sheet 131 is installed.

[0076] It can be understood that in order to horizontally install the display component 14 and the backlight component 13 in the accommodation space 11b, bosses with different heights can be provided at the intersection of the bottom plate 110 and the side plate 120 to carry the display component 14 and the backlight component 13.

Claims

1. An ultra-thin display screen, characterized in that: The ultra-thin display screen comprises a housing, and a circuit board, a backlight source assembly, a display assembly and a glass plate contained in the housing; The housing includes a bottom plate and a plurality of side plates connected end to end, wherein the plurality of side plates are connected to the bottom plate and enclose a receiving space with an opening; the circuit board, the backlight source assembly, the display assembly and the glass plate are sequentially received in the receiving space; the glass plate covers the opening; The bottom plate includes a plate body and a cover body, the plate body is provided with a through hole, the cover body seals the through hole and is detachably fixedly connected to the plate body; The size of the through hole is greater than or equal to the size of the circuit board, so that the circuit board can be installed in the receiving space through the through hole; The surface of the backlight source assembly away from the opening is fitted and fixed to the plate body, and the circuit board is arranged close to the surface of the backlight source assembly away from the opening, or is fitted and fixed to the surface of the backlight source assembly away from the opening.

2. The ultra-thin display screen according to claim 1, characterized in that: The circuit board comprises a board and a plurality of electronic components arranged on the board, wherein the plurality of electronic components are arranged on a surface of the board away from the backlight source assembly; Some of the electronic components are accommodated in the accommodating space, and some of the electronic components pass through the cover body to be exposed outside the housing.

3. The ultra-thin display screen according to claim 1, characterized in that: A groove is formed on the surface of the plate body close to the backlight source assembly; the groove extends to the edge of the plate body and the through hole; The ultra-thin display screen further includes an FPC, which is arranged in the groove and is electrically connected to the circuit board, the backlight source assembly and the display assembly.

4. The ultra-thin display screen as claimed in claim 3, characterized in that: A portion of the side surface of one or more of the display assembly and the backlight assembly is detachably or non-detachably fixed to the side panel, and a wiring channel is formed between the other portion and the side panel; The wiring channel corresponds to the position of the groove.

5. The ultra-thin display screen as claimed in claim 4, characterized in that: The backlight source assembly comprises a light bar and a reflective sheet, a light guide plate and a plurality of optical films stacked in sequence; the optical films are brightness enhancement sheets and / or diffusion sheets; The light bar is arranged on a side of the light guide plate close to the wiring channel; and the surface of the reflector sheet away from the opening is attached and fixed to the plate body.

6. The ultra-thin display screen according to claim 1, characterized in that: The plate body comprises a plurality of first adhesive bonding areas and second adhesive bonding areas, wherein the first adhesive bonding areas and the second adhesive bonding areas are respectively provided with first type of adhesive and second type of adhesive to bond and fix the surface of the backlight source assembly away from the opening to the plate body; The first type of glue comprises a support sheet and adhesive layers located on two opposite surfaces of the support sheet; the second type of glue is liquid curable adhesive.

7. The ultra-thin display screen according to claim 6, characterized in that: The bottom plate is rectangular, and the first adhesive bonding area is arranged near the edge of the bottom plate and is arranged at least in three directions of the bottom plate; The second adhesive bonding area is formed between adjacent first adhesive bonding areas.

8. The ultra-thin display screen according to claim 6, characterized in that: The display screen comprises a base and a connecting piece, one end of the connecting piece is connected to the base, and the other end is connected to the housing through a screw; The position where the connecting piece is screwed to the housing corresponds to the position where the first type of glue is located.

9. The ultra-thin display screen according to any one of claims 1 to 8, characterized in that: The backlight source assembly and the display assembly are spaced apart from each other, with the distance between the two being 0.5-1 mm; The glass plate is fully bonded to the display assembly, and the side surface of the glass plate is bonded to the side plate.

10. The ultra-thin display screen according to any one of claims 1 to 8, characterized in that: The ultra-thin display screen is a vehicle-mounted display screen, the thickness of which is less than or equal to 15 mm; the size of which is 6-14 inches.

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