Ultra-thin display device with backlight source

Abstract

The present invention provides an ultra-thin display device with a backlight source, the ultra-thin display device comprises a shell, and a backlight assembly, a display assembly and a cover plate contained in the shell; the shell comprises 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 surround a containing space with an opening; the backlight assembly, the display assembly and the cover plate are sequentially installed in the containing space; the cover plate covers the opening; the first surface of the backlight assembly is bonded and fixed to the bottom plate; at least part of the side surfaces of the backlight assembly and the display assembly are bonded and fixed to the side plates; the side surfaces of the cover plate are completely bonded and fixed to the side plates; the distance between the surface of the cover plate away from the display assembly and the surface of the bottom plate away from the backlight assembly is less than or equal to 18 mm. The ultra-thin display device with a backlight source provided by the present invention has the advantages of being ultra-thin and the like.

Description

Technical Field

[0001] The present invention relates to the field of display, and in particular to an ultra-thin display device with a backlight source. Background Art

[0002] With the development of intelligent vehicles, the number of in-car displays is increasing and their sizes are getting larger. Due to the limited space inside the car, users expect the thickness of the display to be thinner and lighter.

[0003] In the prior art, a display screen is composed of an outer shell, a front frame, a cover plate, a liquid crystal display assembly, a backlight assembly, and an aluminum shell. The cover plate, the liquid crystal assembly, and the backlight assembly are fixed in the outer shell by the aluminum shell, the front frame, and fixing parts (such as screws). However, such a display screen has a large thickness and cannot meet the current users' expectations for thin and light displays. Summary of the Invention

[0004] Based on the above situation, the main purpose of the present invention is to provide an ultra-thin display device with a backlight source, which can reduce the thickness of the existing display screen.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: providing an ultra-thin display device with a backlight source, the ultra-thin display device comprising a housing, and a backlight assembly, a display assembly and a cover plate accommodated in the housing;

[0006] 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 backlight assembly, the display assembly and the cover plate are sequentially installed in the receiving space; the cover plate covers the opening;

[0007] The backlight assembly comprises a first surface and a second surface opposite to each other, wherein the first surface is a surface away from the display assembly, and the second surface is a surface close to the display assembly;

[0008] The first surface of the backlight assembly is bonded and fixed to the bottom plate; at least part of the side surfaces of the backlight assembly and the display assembly are bonded and fixed to the side plates; and the side surfaces of the cover plate are completely bonded and fixed to the side plates.

[0009] The distance between the surface of the cover plate away from the display assembly and the surface of the bottom plate away from the backlight assembly is less than or equal to 18 mm.

[0010] Preferably, the first surface and the bottom plate are bonded and fixed by a first type of glue and a second type of glue;

[0011] The bottom plate is rectangular, the first type of glue is located at least in three different positions on the bottom plate; the second type of glue is arranged between the first type of glue;

[0012] The first type of glue includes a support sheet and adhesive layers located on two opposite surfaces of the support sheet, and the second type of glue is liquid-curable adhesive.

[0013] Preferably, the bottom plate is provided with first recessed areas in three different directions, and the first type of glue is provided in the first recessed areas;

[0014] The thickness of the first type of glue is 0.3-1 mm; 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 and the backlight assembly is 0.3-0.8 mm.

[0015] Preferably, the bottom plate is provided with mounting holes in the first recessed areas in two opposite directions;

[0016] The first type of glue covers the mounting hole.

[0017] Preferably, the bottom plate is provided with a second recessed area, and the second recessed area and the first recessed area are located at different positions on the bottom plate; the second recessed area extends to the edge of the bottom plate at the position where the second recessed area is located;

[0018] An FPC 16 is provided in the second recessed area, and the FPC 16 is electrically connected to the backlight assembly and the display assembly;

[0019] A portion of the side surface of one or more of the display assembly and the backlight assembly is bonded and fixed to the side panel, and another portion forms a wiring channel with the side panel;

[0020] The wiring channel corresponds to the second recessed area and is located at the same position on the bottom plate.

[0021] Preferably, the backlight assembly includes a light bar and a reflective sheet, a light guide plate and a plurality of optical films stacked in sequence; the optical films are light-enhancing sheets and / or diffusion sheets; the light bar is arranged on a side of the light guide plate close to the wiring channel.

[0022] Preferably, the side panel comprises a first side panel, a second side panel, a third side panel and a fourth side panel which are opposite to each other, the first side panel and the third side panel are opposite to each other, and the second side panel and the fourth side panel are opposite to each other;

[0023] The second recessed area is arranged at the location of the first side panel;

[0024] A platform portion for carrying the cover plate is provided around the inside of the side plate, and the cover plate is bonded and fixed on the platform portion;

[0025] A plurality of first steps arranged at intervals are provided on the inner side of the platform portion on the inner side of the first side panel; the first step portion is lower than the platform portion; the first step portion includes a first sub-step portion and a second sub-step portion, the second sub-step portion is located on the inner side of the first sub-step portion and is lower than the first sub-step portion, and the height difference between the second sub-step portion and the second sub-step portion is greater than or equal to the height of the light bar and greater than the height of the reflective sheet, the light guide plate and the plurality of optical films after being stacked;

[0026] One or more second step portions are provided on the inner sides of the platform portions on the inner sides of the second side plate, the third side plate and the fourth side plate;

[0027] The height of the second sub-step portion is the same as the height of the surface of the bottom plate close to the backlight assembly, so as to cooperate with each other to mount the backlight assembly;

[0028] The first sub-step portion and the second sub-step portion have the same height so as to cooperate with each other to mount the display component.

[0029] Preferably, the base plate includes a plate body and a plate cover, the plate body is provided with an installation window, the plate cover closes the installation window and is detachably fixedly connected to the plate body;

[0030] The ultra-thin display device further includes a circuit board, the size of the installation window being greater than or equal to the size of the circuit board so that the circuit board can pass through the installation window; the circuit board is adhesively fixed to the first surface of the backlight assembly;

[0031] Surfaces of the board body and the board cover away from the backlight assembly are substantially flush.

[0032] Preferably, the backlight assembly is composed of a light bar and a stacked reflective sheet, a light guide plate, a lower diffuser, an upper light-enhancing sheet, and a DBEF; the light bar is arranged on one side of the light guide plate.

[0033] The surface of the reflective sheet away from the light guide plate is the first surface;

[0034] The display component is an LCD component, and the distance between the LCD component and the DBEF is 0.5-1 mm;

[0035] The cover plate is fully attached to the surface of the LCD component;

[0036] The distance between the surface of the cover plate away from the display assembly and the surface of the panel body away from the backlight assembly is less than or equal to 13 mm.

[0037] Preferably, the ultra-thin display device is a vehicle-mounted display screen;

[0038] The distance between the surface of the cover plate away from the display assembly and the surface of the panel body away from the backlight assembly is less than or equal to 15 mm.

[0039] The ultra-thin display device with a backlight provided by the present invention can significantly reduce the thickness of a conventional display screen by directly bonding the backlight assembly to the base plate, bonding the side surfaces of the backlight assembly and display assembly to the side panels or completely bonding them, and completely bonding the side surfaces of the cover plate to the side panels. This invention abandons the conventional structure of a display screen in which the display assembly and backlight assembly are fixed to the housing via an aluminum shell, a front frame, and fixings. By bonding and fixing, the present invention reduces the number of components and the spacing between components within the product. This allows the distance between the surface of the cover plate of the ultra-thin display device with a backlight, which is away from the display assembly, and the surface of the base plate, which is away from the backlight assembly, to be reduced to less than or equal to 18 mm.

[0040] Other beneficial effects of the present invention will be explained through the introduction of specific technical features and technical solutions in the specific implementation methods. Those skilled in the art should be able to understand the beneficial technical effects brought about by the introduction of these technical features and technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The preferred embodiment of the ultra-thin display device with backlight according to the present invention will be described below with reference to the accompanying drawings.

[0042] Figure 1 and Figure 2 Schematic diagram of the three-dimensional structure of the ultra-thin display device with backlight at different viewing angles of the present invention.

[0043] Figure 3 and Figure 4 Schematic diagrams of the three-dimensional structure of the housing of the ultra-thin display device with backlight source at different viewing angles according to the present invention.

[0044] Figure 5 and Figure 6 Schematic diagram of the exploded structure of the ultra-thin display device with backlight at different viewing angles according to the present invention.

[0045] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0046] Figure 8 for Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0047] Figure 9 and Figure 10 It is a schematic cross-sectional view of the ultra-thin display device with a backlight source according to the present invention.

[0048] Description of reference numerals:

[0049] 10. Ultra-thin display device; 11. Housing; 11a. Accommodation space; 11b. Opening; 110. Bottom plate; 111. Plate body; 111a. First recessed area; 111c. Mounting hole; 111b. Second recessed area; 112. Plate cover; 113. Mounting window; 120. Side plate; 121. First side plate; 122. Second side plate; 123. Third side plate; 124. Fourth side plate; 125. Platform portion; 126. First step portion; 127. 61. First sub-step portion; 1262. Second sub-step portion; 127. Second step portion; 13. Backlight assembly; 13a. First surface; 13b. Second surface; 131. Reflector; 132. Light bar; 133. Light guide plate; 134. Lower diffuser; 135. Upper brightening plate; 136. DBEF; 14. Display assembly; 15. Cover plate; 16. FPC; 17. Connector; 18. Base; 140. Circuit board; 19. Protective film. DETAILED DESCRIPTION

[0050] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, and components are not described in detail.

[0051] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0052] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include," "comprising," and similar words should be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to."

[0053] In the description of the present invention, it should be understood that the terms "first," "second," etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0054] The present invention provides an ultra-thin display device with a backlight source, the ultra-thin display device comprising a housing, and a backlight assembly, a display assembly and a cover plate accommodated in the housing;

[0055] 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 backlight assembly, the display assembly and the cover plate are sequentially installed in the receiving space; the cover plate covers the opening;

[0056] The backlight assembly comprises a first surface and a second surface opposite to each other, wherein the first surface is a surface away from the display assembly, and the second surface is a surface close to the display assembly;

[0057] The first surface of the backlight assembly is bonded and fixed to the bottom plate; at least part of the side surfaces of the backlight assembly and the display assembly are bonded and fixed to the side plates; and the side surfaces of the cover plate are completely bonded and fixed to the side plates.

[0058] The distance between the surface of the cover plate away from the display assembly and the surface of the bottom plate away from the backlight assembly is less than or equal to 18 mm.

[0059] The ultra-thin display device with a backlight provided by the present invention can significantly reduce the thickness of a conventional display screen by directly bonding the backlight assembly to the base plate, bonding the side surfaces of the backlight assembly and display assembly to the side panels or completely bonding them, and completely bonding the side surfaces of the cover plate to the side panels. This invention abandons the conventional structure of a display screen in which the display assembly and backlight assembly are fixed to the housing via an aluminum shell, a front frame, and fixings. By bonding and fixing, the present invention reduces the number of components and the spacing between components within the product. This allows the distance between the surface of the cover plate of the ultra-thin display device with a backlight, which is away from the display assembly, and the surface of the base plate, which is away from the backlight assembly, to be reduced to less than or equal to 18 mm.

[0060] See also Figure 1 and Figure 2 The present invention provides an ultra-thin display device 10 with a backlight source. The ultra-thin display device 10 can be used in the fields of automobiles, home appliances, consumer electronics, etc. As an embodiment, the ultra-thin display device 10 is particularly suitable for use in the automotive field as an in-vehicle display device. Its display size can be 6-14 inches. It is understood that the specific size is not limited and can be adjusted according to actual needs.

[0061] See also Figures 3 to 6 The ultra-thin display device 10 includes a housing 11 for accommodating various components. In one embodiment, the housing 11 includes a bottom plate 110 and a plurality of side plates 120 connected end to end. The side plates 120 are connected to the bottom plate 110 to form a receiving space 11a with an opening 11b. It is understood that at least a portion of the bottom plate 110 and the side plates 120 may be integrally formed, or they may be formed separately and then fixed together.

[0062] As a specific embodiment, the bottom plate 110 is rectangular, and the side plates 120 include a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124. The first side plate 121 and the third side plate 123 are arranged opposite each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite each other. 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 connected to the bottom plate 110 at four different positions. 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 storage space 11a, which has an opening 11b. It will be understood that the bottom plate 110 is rectangular, which means that its outer contour is generally rectangular, and it does not require it to be a perfect rectangle. The corners can be designed with chamfered or rounded corners.

[0063] As an embodiment, the base plate 110 includes a base plate 111 and a base plate cover 112. The base plate 111 is provided with an installation window 113. The base plate cover 112 closes the installation window 113 and is detachably fixedly connected to the base plate 111. It is understood that the base plate 110 and the base plate cover 112 may also be integrally formed, that is, the base plate 110 is not provided with the installation window 113.

[0064] As an embodiment, the plate body 111 is provided with a first recessed area 111a at three different positions of the bottom plate 110, that is, at least one first recessed area 111a is provided at three different positions of the bottom plate 110. A second recessed area 111b is provided at another position different from the position where the first recessed area 111a is provided, and the first recessed area 111a and the second recessed area 111b have different functions (described below). The second recessed area 111b and the first recessed area 111a are located at different positions of the bottom plate 110. The second recessed area 111b is provided close to the first side plate 121, and the first recessed area 111a is provided 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 position, that is, extends to the first side plate 121, to facilitate wiring. Furthermore, the second recessed area 111b extends to the installation window 113 to facilitate electrical connection.

[0065] As an embodiment, the second recessed region 111 b has at least a first depth and a second depth.

[0066] The ultra-thin display device 10 further includes a backlight assembly 13, a display assembly 14, and a cover plate 15 housed within the housing 11. The backlight assembly 13, the display assembly 14, and the cover plate 15 are sequentially housed within the housing space 11a, wherein the backlight assembly 13 is positioned closer to the base plate 110 than the cover plate 15. The cover plate 15 covers the opening 11b.

[0067] The backlight assembly 13 includes a first surface 13a and a second surface 13b that are opposed to each other. The first surface 13a is the surface away from the display assembly 14, and the second surface 13b is the surface closer to the display assembly 14. The first surface 13a of the backlight assembly 13 is adhesively fixed to the bottom plate 110. It will be understood that the adhesive fixation of the first surface 13a to the bottom plate 110 does not require that the first surface 13a be entirely in contact with the bottom plate 110. It is sufficient that at least a portion of the first surface 13a is in contact with the bottom plate 110 to achieve adhesive fixation.

[0068] As an embodiment, the first surface 13a and the base plate 110 are bonded and 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 111 are bonded and fixed by a first type of glue and a second type of glue. The first type of glue is a glue that has both bonding and supporting functions, such as 3M or other VHB (Very High Bond) tapes available on the market. The second type of glue mainly plays a bonding role, such as structural glue available on the market. When it is just applied, it has the advantage of an adjustable shape due to its liquid form, and can then be cured to achieve a bonding effect. During bonding, the supporting effect of the first type of glue can make the first surface 13a and the base plate 110 fit together while ensuring a small distance between the two, so as to facilitate the formation of 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 can further be 0.4-0.8 mm, 0.5-0.8 mm, or 0.5-0.6 mm.

[0069] As an embodiment, the first type of glue includes a support sheet and adhesive layers located on two opposite surfaces of the support sheet, and the second type of glue is a liquid-curable adhesive, and is more preferably a structural adhesive.

[0070] As an embodiment, the first type of glue is located at least in three different directions 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; the first type of glue is arranged in the first recessed areas 111a located in three different directions. The provision of the first recessed areas 111a facilitates the positioning of the bonding position of the first type of glue, and avoids arbitrary bonding that causes the backlight assembly 13 to tilt relative to the bottom plate 110, affecting the light output effect. As an embodiment, the first type of glue is in the form of a strip of glue, and the first type of glue in each first recessed area 111a can be one or more strips, and the first type of glue covers at least a portion of the first recessed area 111a.

[0071] As an embodiment, the thickness of the first type of glue is 0.3-1 mm; after bonding, the thickness of the first type of glue is greater than the thickness of the second type of glue; the distance between the base 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, which can further be 0.4-0.8 mm, 0.5-0.8 mm, or 0.5-0.6 mm.

[0072] As an embodiment, an FPC16 is provided in the second recessed area 111b, and the FPC16 is electrically connected to the backlight assembly 13 and the display assembly 14; a portion of the side surface of one or more of the display assembly 14 and the backlight assembly 13 is bonded and fixed to the side panel 120, and a wiring channel S is formed between the other portion and the side panel 120; the wiring channel corresponds to the position of the second recessed area 111b, and the two are located in the same orientation of the bottom plate 110, that is, the wiring channel S is located on the inner side of the first side panel 121.

[0073] A portion of the side surface (surface in the thickness direction) of one or more of the display component 14 and the backlight component 13 is bonded and fixed to the side panel 120. As a specific embodiment, the side surface portion of the display component 14 is bonded and fixed to the side panel 120, and the side surface portion of the backlight component 13 is bonded and fixed to the side panel 120. Bonding and fixing the side surfaces of both components to the side panel 120 can achieve a fixed connection between the two components and the housing 11. Some side surfaces are not bonded and fixed to the side panel 120, so that a wiring channel is formed between the two components and the side panel 120 for wiring.

[0074] As an embodiment, the side of the cover plate 15 is completely bonded and fixed to the side plate 120, which not only achieves fixation but also acts as a seal. In some embodiments, a protective film 19, such as an explosion-proof film, a privacy film, etc., can be attached to the surface of the cover plate 15.

[0075] As an embodiment, the backlight assembly 13 includes a light bar 132 and a reflective sheet 131, a light guide plate 133 and multiple optical films stacked in sequence; the optical films are light-enhancing films and / or diffusion films; the light bar 132 is arranged on the side of the light guide plate 133 close to the wiring channel, so that the FPC 16 connected to the light bar 132 can pass through the wiring channel and enter the second recessed area 111b.

[0076] See also Figures 7 to 10 As an embodiment, the housing 11 is provided with a platform portion 125 surrounding the side panel 120 for supporting the cover panel 15. The platform portion 125 is used to support the cover panel 15, and the cover panel 15 can be directly bonded and fixed to the platform portion 125. The surface of the cover panel 15 near the display assembly 14 is covered with adhesive, and the adhesive fully adheres to the platform portion 125 and the surface of the display assembly 14 near the cover panel 15.

[0077] As an embodiment, a plurality of first steps 126 are provided inside the platform portion 125 inside the first side panel 121 at intervals, and wiring channels are formed between adjacent first steps 126. The first steps 126 are used to carry the display assembly 14 and the backlight assembly 13.

[0078] As an embodiment, the height of the first step portion 126 is lower than that of the platform portion 125; the first step portion 126 includes a first sub-step portion 1261 and a second sub-step portion 1262. The second sub-step portion 1262 is located inside the first sub-step portion 1261 and is lower than the first sub-step portion 1261. The height difference between the second sub-step portion 1262 and the first sub-step portion 1261 is greater than or equal to the height of the light bar 132, and greater than the height of the reflective sheet 131, the light guide plate 133, and the multiple optical films stacked together. In this way, the installation of the display component 14 and the backlight component 13 can be guaranteed to be non-interfering, and the display effect can be guaranteed. In the embodiment where the height difference between the first sub-step portion 1261 and the second sub-step portion 1262 is equal to the height of the light bar 132, the light bar 132 can also serve as a carrier for the display component 14. In this way, the space between the display component 14 and the first side panel 121 can be larger, facilitating wiring, etc.

[0079] As an embodiment, one or more second step portions 127 are provided on the inner side of the platform portion 125 on the inner side of the second side panel 122, the third side panel 123 and the fourth side panel 124; the height of the second sub-step portion 1262 is the same as the surface height of the bottom plate 110 close to the backlight assembly 13, so as to cooperate with each other to carry the backlight assembly 13; the first sub-step portion 1261 has the same height as the second step portion 127, so as to cooperate with each other to carry the display assembly 14.

[0080] It is understood that a second step portion 127 may also be provided on the inner side of the first side plate 121. As an embodiment, a first step portion 126 and a second step portion 127 are provided on the inner side of the first side plate 121. As an embodiment, the first step portion 126 is located in the second recessed area 111b, and the second step portion 127 is provided in the non-recessed area.

[0081] As an embodiment, the second step portions 127 on the inner sides of the second side plate 122 , the third side plate 123 and the fourth side plate 124 may be connected or independent of each other.

[0082] It can be understood that the first step portion 126 and the second step portion 127 can be considered to be part of the side panel 120. When describing the bonding, fixing / bonding of the display component 14, the backlight component 13 and the side panel 120, it can include the bonding, fixing / bonding of the display component 14, the backlight component 13 and the first step portion 126 and the second step portion 127.

[0083] As an embodiment, the ultra-thin display device 10 further includes a circuit board 140 electrically connected to the FPC 16. The size of the mounting window 113 is equal to or greater than the size of the circuit board 140, so that the circuit board 140 can pass through the mounting window 113, making it convenient for the user to open the cover 112 to maintain the circuit board 140. The circuit board 140 is adhesively fixed to the first surface 13a of the backlight assembly 13, which helps reduce the thickness of the product.

[0084] As an embodiment, the surfaces of the board body 111 and the board cover 112 away from the backlight assembly 13 are substantially flush.

[0085] In one embodiment, the backlight assembly 13 comprises a light bar 132, a stacked reflective sheet 131, a light guide plate 133, a lower diffuser 134, an upper brightness enhancement sheet 135, and a dual brightness enhancement film (DBEF) 136. The light bar 132 is positioned on one side of the light guide plate 133, and the surface of the reflective sheet 131 facing away from the light guide plate 133 is a first surface 13a. The display assembly 14 is an LCD assembly, and the cover plate 15 is fully bonded to the surface of the LCD assembly. This optimizes the number of components while achieving product functionality and reducing thickness.

[0086] As an embodiment, the distance between the LCD assembly and the DBEF 136 is 0.5-1 mm, and may further be 0.5-0.8 mm, 0.5-0.7 mm, or 0.5-0.6 mm.

[0087] As an embodiment, the distance between the surface of the cover plate 15 away from the display assembly 14 and the surface of the panel body 111 away from the backlight assembly 13 is less than or equal to 15 mm. Furthermore, the distance between the surface of the cover plate 15 away from the display assembly 14 and the surface of the panel body 111 away from the backlight assembly 13 is less than or equal to 13 mm.

[0088] As an embodiment, the ultra-thin display device 10 is a vehicle-mounted display screen.

[0089] As an embodiment, the ultra-thin display device 10 further includes a base 18 and a connector 17 , and the base 18 is connected to the housing 11 via the connector 17 .

[0090] As an embodiment, mounting holes 111c are provided in first recessed areas 111a on two opposing sides of the base plate 110; the first type of adhesive covers the mounting holes 111c. When screws and other fasteners are installed in the mounting holes 111c, metal filings can easily fall out over time, affecting product operation. For example, metal filings can affect the normal operation of the circuit board 140. Covering the mounting holes 111c with the first type of adhesive prevents this from occurring and allows for structural reuse of the first type of adhesive.

[0091] As an embodiment, when installing the ultra-thin display device 10, after installing the FPC 16, the reflective sheet 131 can be bonded and fixed to the bottom plate 110 (the reflective sheet 131 is bonded and fixed to the second sub-step portion 1262 in the second recessed area 111b). Then, the light guide plate 133, upper / lower diffusers, upper / lower brightness enhancement sheets, DBEF 136, etc. are stacked. After installing the light bar 132, adhesive is applied so that the side surface of the light bar 132, including the stacked light guide plate 133, upper / lower diffusers, upper / lower brightness enhancement sheets, DBEF 136, etc., is bonded and fixed to the housing 11. The unbonded side surface of the light bar 132 forms a routing channel for the FPC 16 between the side panel 120 and the display assembly 14. The display assembly 14 is mounted on the first sub-step portion 1261 and the second step portion 127 and fixed with adhesive. The FPC 16 on the light bar 132 can pass through the wiring channel and enter the second recessed area 111b (or the FPC 16 can pass through the wiring channel from the second recessed area 111b and plug into the light bar 132). The FPC 16 extends from the wiring channel and plugs into the display assembly 14 (the display assembly 14 and the FPC 16 can also remain fixedly connected). The FPC 16 connected to the light bar 132 and the FPC 16 connected to the display assembly 14 are located in the second recessed area 111b of the first depth and the second depth, respectively. The cover 15 is then fully attached to the display assembly 14 and the platform portion 125, and all sides of the cover 15 are bonded and fixed to the side panels 120. Finally, the cover 112 is removed, the circuit board 140 is attached to the reflective sheet 131, and the cover 112 is replaced.

[0092] As an embodiment, the circuit board 140 may be installed before the reflective sheet 131 is installed.

[0093] Those skilled in the art will appreciate that, provided there is no conflict, the above preferred solutions can be freely combined and superimposed.

[0094] It should be understood that the above-mentioned embodiments are merely illustrative and non-restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by those skilled in the art to the above-mentioned details will be included in the scope of the claims of the present invention.

Claims

1. An ultra-thin display device with a backlight source, characterized in that: The ultra-thin display device comprises a housing, and a backlight assembly, a display assembly and a cover plate accommodated 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 backlight assembly, the display assembly and the cover plate are sequentially installed in the receiving space; The cover plate covers the opening; The backlight assembly comprises a first surface and a second surface opposite to each other, the first surface is a surface away from the display assembly, and the second surface is a surface close to the display assembly; The first surface of the backlight assembly is bonded and fixed to the bottom plate; at least part of the side surfaces of the backlight assembly and the display assembly are bonded and fixed to the side plate; the side surfaces of the cover plate are completely bonded and fixed to the side plate; The distance between the surface of the cover plate away from the display assembly and the surface of the bottom plate away from the backlight assembly is less than or equal to 18 mm; The first surface and the bottom plate are bonded and fixed by using a first type of glue and a second type of glue; The bottom plate is rectangular, the first type of glue is located at least at three different positions of the bottom plate; the second type of glue is arranged between the first type of glue; The first type of glue comprises a support sheet and adhesive layers located on two opposite surfaces of the support sheet, and the second type of glue is liquid curable adhesive.

2. The ultra-thin display device with backlight according to claim 1, characterized in that: The bottom plate is provided with first recessed areas at three different positions, and the first type of glue is provided in the first recessed areas; The thickness of the first type of glue is 0.3-1 mm; 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 and the backlight assembly is 0.3-0.8 mm.

3. The ultra-thin display device with backlight as claimed in claim 2, characterized in that: The bottom plate is provided with mounting holes in the first recessed areas in two opposite directions; The first type of glue covers the mounting hole.

4. The ultra-thin display device with backlight according to claim 2, characterized in that: The bottom plate is provided with a second recessed area, and the second recessed area and the first recessed area are located at different positions of the bottom plate; the second recessed area extends to the edge of the bottom plate at the position where the second recessed area is located; An FPC 16 is disposed in the second recessed area, and the FPC 16 is electrically connected to the backlight assembly and the display assembly; A portion of the side surface of one or more of the display assembly and the backlight assembly is bonded and fixed to the side plate, and a wiring channel is formed between the other portion and the side plate; The wiring channel corresponds to the second recessed area and is located at the same position of the bottom plate.

5. The ultra-thin display device with backlight as claimed in claim 4, characterized in that: The backlight 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 a light-enhancing sheet and a diffusion sheet; the light bar is arranged on the side of the light guide plate close to the wiring channel.

6. The ultra-thin display device with backlight as claimed in claim 5, characterized in that: The side panels include a first side panel, a second side panel, a third side panel and a fourth side panel which are opposite to each other, wherein the first side panel and the third side panel are opposite to each other, and the second side panel and the fourth side panel are opposite to each other; The second recessed area is arranged at the position where the first side plate is located; A platform portion for carrying the cover plate is disposed around the inside of the side plate, and the cover plate is bonded and fixed on the platform portion; A plurality of first step portions arranged at intervals are arranged inside the platform portion inside the first side plate; the height of the first step portion is lower than the platform portion; the first step portion includes a first sub-step portion and a second sub-step portion, the second sub-step portion is located inside the first sub-step portion, and its height is lower than the first sub-step portion, and the height difference between the second sub-step portion and the second sub-step portion is greater than or equal to the height of the light bar, and greater than the height of the reflector, the light guide plate and the plurality of optical films after being stacked; One or more second step portions are provided inside the platform portion inside the second side plate, the third side plate and the fourth side plate; The height of the second sub-step portion is the same as the height of the surface of the bottom plate close to the backlight assembly, so as to cooperate with each other to mount the backlight assembly; The first sub-step portion and the second step portion have the same height so as to cooperate with each other to mount the display component.

7. The ultra-thin display device with backlight according to claim 1, characterized in that: The bottom plate includes a plate body and a plate cover, the plate body is provided with an installation window, the plate cover closes the installation window and is detachably fixedly connected to the plate body; The ultra-thin display device further comprises a circuit board, the size of the installation window is greater than or equal to the size of the circuit board, so that the circuit board can pass through the installation window; the circuit board is adhesively fixed to the first surface of the backlight assembly; The surfaces of the board body and the board cover away from the backlight assembly are substantially flush.

8. The ultra-thin display device with backlight according to claim 1, characterized in that: The backlight assembly is composed of a light bar and a stacked reflective sheet, a light guide plate, a lower diffuser, an upper light enhancement sheet, and a DBEF; the light bar is arranged on one side of the light guide plate. The surface of the reflective sheet away from the light guide plate is the first surface; The display component is an LCD component, and the distance between the LCD component and the DBEF is 0.5-1 mm; The cover plate is fully attached to the surface of the LCD component; The distance between the surface of the cover plate away from the display assembly and the surface of the plate body away from the backlight assembly is less than or equal to 13 mm.

9. The ultra-thin display device with backlight as claimed in claim 1, characterized in that: The ultra-thin display device is a vehicle-mounted display screen; The distance between the surface of the cover plate away from the display assembly and the surface of the plate body away from the backlight assembly is less than or equal to 15 mm.

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