Full-screen casting display module

Abstract

The utility model relates to the technical field of display modules, in particular to a full-screen casting display module. The backlight module comprises a backlight casting, a backlight light guide plate, a cover plate and a backlight middle iron frame, the backlight casting adopts a full-screen design; the backlight light guide plate and the functional membrane arranged on the backlight light guide plate are both designed to be of a buckle-free structure; l-shaped limiting blocks are designed at the two corners of the opposite sides of a light bar of the backlight guide plate, the functional membrane is bonded to the backlight guide plate through a double-sided adhesive tape, and two protruding blocks are designed on the backlight guide plate and used for limiting the functional membrane. The backlight casting is of a full-screen structure, and the corresponding backlight light guide plate and the corresponding functional membrane are of buckle-free structures; in order to prevent the functional diaphragm from shifting, the backlight guide plate is provided with two convex blocks, and the mounting alignment parts of the functional diaphragm and the convex blocks are provided with clearance positions, so that the movement of the functional diaphragm is limited, and the problem that the light intensity of the part is higher than that of other display areas due to the fact that the light of a buckle position is not effectively reflected and recycled is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display module technical field, especially a full screen casting display module. BACKGROUND

[0002] Current vehicle interior, in order to pursue better man-machine interaction experience effect, vehicle display module is gradually developing to big size, and bigger size display screen also means more complex internal structure, how to guarantee better display effect becomes the key point of design scheme. Figure 1 As shown, the backlight lighting state, LED lamp side to the edge of the light guide plate and functional film fixed buckle position appears the ray dark area, leading to the display module of TFT assembly also appears the edge display dark area problem, influence customer experience effect. Display dark area is due to the light of the buckle position of the backlight light guide plate is not effectively reflected back, therefore the light intensity of this part is weaker than other display areas, so it is urgent to improve this display dark area problem. UTILITY MODEL CONTENT

[0003] The utility model aims at the problems in the background art, and provides a full screen casting display module.

[0004] The technical scheme of the utility model relates to a full screen casting display module, which comprises a backlight casting, a backlight light guide plate, a cover plate and a backlight middle iron frame.

[0005] The backlight casting is designed as a full screen; the backlight light guide plate and the functional film arranged on the backlight light guide plate are both designed as buckle-free structures.

[0006] The two corner positions opposite the lamp strip of the backlight light guide plate are both designed as L-shaped limiting blocks, the functional film is adhered to the backlight light guide plate through double-sided adhesive, and the backlight light guide plate is designed with two protrusions for limiting the functional film.

[0007] Preferably, during assembly of the display module, the cover plate is once adhered to the FOG component through OCA optical adhesive, the point gluing surface of the backlight casting is pasted with double-sided adhesive pads, RTV glue is applied to the point gluing surface, the once adhered component and the backlight casting are twice adhered, and finally, pressure curing is performed.

[0008] Preferably, the functional film comprises a reflective film, a diffusion film, a light enhancement film, a DBEF film and an anti-peep film.

[0009] Preferably, the functional films are fixed to form an integral structure through double-sided adhesive.

[0010] Preferably, the backlight casting is a die-cast aluminum alloy piece or a die-cast aluminum-magnesium alloy piece.

[0011] Preferably, the backlight middle iron frame is arranged above the functional film to prevent the film from being deviated.

[0012] Preferably, the four edges of the backlight middle iron frame are provided with inner buckles for limiting the backlight middle iron frame to be stably installed in the groove of the backlight casting.

[0013] Preferably, the three edges of the backlight middle iron frame except the edge on which the backlight LED light bar is installed are provided with pull buckles.

[0014] Preferably, the backlight middle iron frame forms a support structure for the backlight dustproof foam.

[0015] Preferably, the functional film and the convex block installation alignment part are provided with a clearance.

[0016] Compared with the prior art, the display module has the following beneficial technical effects:

[0017] The display module of the utility model is composed of a cover plate, OCA optical glue, a FOG assembly, RTV glue, double-sided adhesive PC pad, and a backlight casting, wherein the backlight casting is a full-screen design, the light guide plate and the functional film need to be designed as a buckle-free structure, in order to prevent the light guide plate from loosening and making abnormal sound, the two corner positions of the light bar on the opposite side of the light guide plate need to be designed as L-shaped light guide plate limiting silica gel blocks, the functional film is adhered to the light guide plate through film fixation, and the light guide plate is designed with two convex blocks for limiting the functional film, a middle iron frame is added above the functional film to prevent the functional film from being deviated, and the backlight middle iron frame can support the dustproof foam. The design of the middle iron frame needs to be designed with inner buckles and pull buckles, the inner buckles can limit the middle iron frame to be stably installed in the groove of the casting, and the pull buckles can ensure that the middle iron frame will not be deformed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a physical photo of the display module in the prior art;

[0019] Figure 2 It is a structure schematic view of the full-screen casting display module in the embodiment of the utility model;

[0020] Figure 3 It is a structure schematic view of the full-screen back module in the embodiment of the utility model;

[0021] Figure 4 It is a structure schematic view of the full-screen back module without the backlight middle iron frame in the embodiment of the utility model;

[0022] Figure 5 It is a partial enlarged view of the pull buckle and the inner buckle in the embodiment of the utility model;

[0023] Figure 6 It is a partial enlarged view of the convex block in the embodiment of the utility model.

[0024] Reference signs: 1, backlight casting; 2, backlight light guide plate; 3, cover plate; 4, backlight middle iron frame; 5, backlight dustproof bubble cotton; 6, RTV glue; 7, FOG assembly; 8, OCA optical glue; 9, cushion block; 10, lifting buckle; 11, inner buckle; 12, backlight LED light bar; 13, protruding block; 14, limiting block. DETAILED DESCRIPTION

[0025] Example 1

[0026] As Figure 2 shown, the utility model provides a full screen casting display module, including backlight casting 1, backlight light guide plate 2, cover plate 3 and backlight middle iron frame 4, backlight casting 1 is full screen design, as Figure 4 shown, backlight light guide plate 2 and the functional film piece that sets up on backlight light guide plate 2 are designed as no buckle structure, the light bar opposite side two corners of backlight light guide plate 2 are designed L type limiting block 14, and functional film piece is adhered on backlight light guide plate 2 through double-sided adhesive, and backlight light guide plate 2 designs two protruding blocks 13 for the limiting of functional film piece (as Figure 6 shown).

[0027] Backlight casting 1 is set as full screen structure, and corresponding backlight light guide plate 2 and functional film piece are no buckle structure, thereby solve the problem that the light of buckle position is not effectively reflected and recycled, and the light intensity of this part is weaker than other display areas, resulting in the display dark area, in the embodiment, to prevent functional film piece ectopia, backlight light guide plate 2 designs two protruding blocks 13 and functional film piece and protruding block 13 installation alignment part set up empty position, thereby limiting the movement of functional film piece.

[0028] Example 2

[0029] The utility model discloses a full screen casting display module, when display module assembly, cover plate 3 is adhered once through OCA optical glue 8 and FOG assembly 7, and the cushion block 9 of double-sided adhesive is pasted to the dispensing surface of backlight casting 1, and RTV glue 6 is dispensed on the dispensing surface, and the primary adhering piece and backlight casting 1 are adhered twice, and finally pressure curing.

[0030] In the embodiment, functional film piece includes reflecting film, diffusion film, light enhancement film, DBEF film and anti-peep film. Functional film piece is fixed to form an integral structure by double-sided adhesive. As an optional scheme, the backlight casting 1 is a die-cast aluminum alloy or a die-cast aluminum-magnesium alloy.

[0031] As Figure 2 shown, the backlight middle iron frame 4 is arranged above the functional film piece, for preventing the film piece from being offset. As Figure 3 , 5As shown in the drawings, the four edges of the backlight middle iron frame 4 are provided with inner buckles 11, which are used for limiting the backlight middle iron frame 4 to be stably installed in the groove of the backlight casting 1.

[0032] As shown in the drawings, the three edges of the backlight middle iron frame 4 except the edge where the backlight LED light bar 12 is installed are provided with pull buckles 10; the pull buckles 10 are used for limiting the deformation of the backlight middle iron frame 4. Figure 3 、 5 As shown in the drawings, the three edges of the backlight middle iron frame 4 except the edge where the backlight LED light bar 12 is installed are provided with pull buckles 10; the pull buckles 10 are used for limiting the deformation of the backlight middle iron frame 4.

[0033] The backlight middle iron frame 4 forms a supporting structure for the backlight dustproof foam 5; the backlight dustproof foam 5 is used for dustproof between the FOG assembly 7 and the functional film.

[0034] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A full-screen casting display module, characterized in that, It includes a backlight casting (1), a backlight guide plate (2), a cover plate (3), and a backlight iron frame (4); The backlight casting (1) is designed for full-screen display; the backlight guide plate (2) and the functional film set on the backlight guide plate (2) are designed as a snap-on structure; L-shaped limiting blocks (14) are designed on both sides of the lamp strip of the backlight guide plate (2). The functional film is glued to the backlight guide plate (2) by double-sided adhesive. The backlight guide plate (2) is designed with two protrusions (13) for limiting the functional film.

2. The full-screen casting display module according to claim 1, characterized in that, During the assembly of the display module, the cover plate (3) is bonded to the FOG component (7) in one step using OCA optical adhesive (8). The backlight casting (1) is bonded with a double-sided adhesive pad (9) on the adhesive surface, and RTV adhesive (6) is applied to the adhesive surface. The first-layer bonded part and the backlight casting (1) are bonded together in two steps, and finally pressure is maintained for curing.

3. A full-screen casting display module according to claim 1, characterized in that, Functional films include reflective films, diffuser films, brightness enhancement films, DBEF films, and privacy films.

4. A full-screen casting display module according to claim 3, characterized in that, The functional membranes are fixed together on both sides to form an integral structure.

5. A full-screen casting display module according to claim 1, characterized in that, The backlight casting (1) is a die-cast aluminum alloy part or a die-cast aluminum-magnesium alloy part.

6. A full-screen casting display module according to claim 1, characterized in that, The iron frame (4) in the backlight is set above the functional diaphragm to prevent the diaphragm from shifting.

7. A full-screen casting display module according to claim 6, characterized in that, The four sides of the backlight iron frame (4) are provided with inner buckles (11) to limit the backlight iron frame (4) so ​​that it is stably installed in the groove of the backlight casting (1).

8. A full-screen casting display module according to claim 6, characterized in that, Except for the side where the backlight LED light strip (12) is installed, the other three sides of the backlight iron frame (4) are equipped with lifting buckles (10); the lifting buckles (10) are used to limit the deformation of the backlight iron frame (4).

9. A full-screen casting display module according to claim 1, characterized in that, The iron frame (4) in the backlight forms a support structure for the backlight dustproof foam (5); the backlight dustproof foam (5) is used to prevent dust between the FOG component (7) and the functional diaphragm.

10. A full-screen casting display module according to claim 1, characterized in that, The functional diaphragm and the protrusion (13) are installed with a clearance space.

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