CN210514870U - Bar-shaped liquid crystal display plastic backlight module - Google Patents

Abstract

The utility model discloses a bar liquid crystal display plastics backlight unit, including preceding frame, center and liquid crystal display panel, preceding frame below shaping has the center, preceding frame below middle part shaping has the draw-in groove, the draw-in groove is inside to be provided with liquid crystal display panel, preceding frame with the inner chamber of center is accomplished by the clamping of machining. Has the advantages that: the utility model provides a clamping is accomplished by a machining to the inner chamber of front bezel and middle frame, can ensure that the size of middle bezel and the inside cavity of front bezel has higher uniformity, and then improve the precision of backlight unit assembly, improve backlight unit's quality, can be through right frame and left frame to inserting, realize the connection installation of fixed frame and plate assembly, fix it in the below of middle bezel, can improve this backlight unit's packaging efficiency, the backlight unit shell of being made by rigid plastic, can effectual reduction backlight unit's manufacturing cost.

Description

Bar-shaped liquid crystal display plastic backlight module

Technical Field

The utility model relates to a liquid crystal display technical field, concretely relates to bar liquid crystal display plastics backlight unit.

Background

Liquid crystal display screens have been widely used in electronic products, including computers, televisions, mobile phones, and the like. The backlight module is an important component of the liquid crystal display screen. The backlight module needs to be provided with a light guide plate, but the existing fixing of the light guide plate mostly adopts a fixing mode of a positioning column, and the defect is that when the backlight module is vibrated, the light guide plate is possibly damaged.

But the split type design is mostly adopted to preceding frame and the middle frame among the current bar liquid crystal display backlight unit, has certain dimensional error after the equipment, influences backlight unit's assembly quality, and simultaneously, the plate assembly just can assemble in the assembling process, can not realize pre-assembly, reduces backlight unit's packaging efficiency, and exactly, current backlight unit shell mostly adopts the aluminum alloy to make in addition, and use cost is higher.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the prior art not enough, provide a bar liquid crystal display plastics backlight unit now, solved the bulky price height of crane, be difficult to get into narrow construction site and the height problem of unadjustable.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a bar liquid crystal display plastics backlight unit, including preceding frame, center and liquid crystal display panel, preceding frame below shaping has the center, preceding frame below middle part shaping has the draw-in groove, the draw-in groove is inside to be provided with the liquid crystal display panel, preceding frame with the inner chamber of center is accomplished by the clamping of machining.

By adopting the technical scheme, the sizes of the middle frame and the cavity in the front frame can be ensured to have higher consistency, so that the assembling accuracy of the backlight module is improved, and the quality of the backlight module is improved.

Further, sliding connection has the bail on the wall of center both sides, the center below is provided with fixed frame, fixed frame with the center passes through the screwed connection.

By adopting the technical scheme, the light guide plate can be clamped inside the middle frame through the clamping nails, so that the tight connection of the light guide plate, the reflecting sheet, the composite film, the diffusion sheet and the liquid crystal display panel is realized.

Further, fixed frame includes the right side frame and sets up the left frame of right side frame one side, a left side frame with the right side frame is pegged graft, the inside shaping of center has the groove of collecting, it has the plate assembly to collect the inside card pressure of inslot.

Through adopting above-mentioned technical scheme, can pass through right side frame with left side frame is to inserting, realizes the connection installation of fixed frame and plate assembly, can improve this backlight unit's packaging efficiency.

Furthermore, a rear cover plate is arranged below the fixing frame and connected with the fixing frame through screws.

Through adopting above-mentioned technical scheme, realize the back shroud with fixed frame's zonulae occludens.

Furthermore, a diffusion sheet is lapped below the liquid crystal display panel, and a composite film is lapped below the diffusion sheet.

By adopting the technical scheme, the diffusion sheet can provide a uniform surface light source for the display, the composite film can improve the angular distribution of light, concentrates the light on the front-view angle, reduces the loss and improves the total emergent luminous flux.

Furthermore, diffusion piece has been lapped to compound membrane below, diffusion piece below overlap joint has the light guide plate, the light guide plate with the center passes through the bail crimping.

By adopting the technical scheme, the light guide plate is made of high-light-transmittance acrylic plastic, the surface is very smooth and flat, and most of internal light rays can be regularly and totally reflected on the flat surface of the light guide plate and cannot be emitted out of the light guide plate.

Further, light bar all is provided with in light guide plate below both sides, the light bar with the light guide plate crimping, the front bezel the center fixed frame and the back shroud all has rigid plastic to make.

By adopting the technical scheme, the light bar irradiates the light guide plate with a line light source and converts the line light source into a surface light source.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1. in order to solve the problems that the front frame and the middle frame in the existing bar-shaped liquid crystal display screen backlight module are mostly designed in a split mode, and certain size errors exist after assembly, and the assembly quality of the backlight module is influenced, the inner cavities of the front frame and the middle frame in the utility model are completed by one-time clamping by machining, so that the sizes of the inner cavities of the middle frame and the front frame can be ensured to have higher consistency, the assembly accuracy of the backlight module is further improved, and the quality of the backlight module is improved;

2. in order to solve the problems that the plate assembly in the existing bar-shaped liquid crystal display backlight module can be assembled only in the assembling process, the pre-assembly cannot be realized, and the assembling efficiency of the backlight module is reduced, the utility model can realize the connection and installation of the fixed frame and the plate assembly by the opposite insertion of the right frame and the left frame, and fix the fixed frame and the plate assembly below the middle frame, thereby improving the assembling efficiency of the backlight module;

3. for solving current bar liquid crystal display backlight unit shell and mostly adopting the aluminum alloy to make, the higher problem of use cost, the utility model discloses the backlight unit shell of making by rigid plastic can effectual reduction backlight unit's manufacturing cost.

Drawings

Fig. 1 is a front view of a plastic backlight module for a bar-type liquid crystal display panel according to the present invention;

fig. 2 is a main sectional view of a plastic backlight module for a bar-type liquid crystal display;

fig. 3 is a main sectional view of a fixing frame in a plastic backlight module for a bar-shaped liquid crystal display;

fig. 4 is a schematic view of the connection relationship between the staple bolt and the middle frame in the plastic backlight module of the bar-type liquid crystal display screen.

The reference numerals are explained below:

1. a front frame; 2. a middle frame; 3. a staple bolt; 4. a card slot; 5. a liquid crystal display panel; 6. a fixing frame; 601. a right frame; 602. a left frame; 7. a rear cover plate; 8. a diffusion sheet; 9. compounding film; 10. a reflective sheet; 11. a light guide plate; 12. a light bar; 13. a finishing groove; 14. a panel assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-4, a bar-shaped liquid crystal display plastic backlight module in this embodiment includes a front frame 1, a middle frame 2 and a liquid crystal display panel 5, the middle frame 2 is formed below the front frame 1, a clamping groove 4 is formed in the middle below the front frame 1, the liquid crystal display panel 5 is arranged inside the clamping groove 4, inner cavities of the front frame 1 and the middle frame 2 are completed by one-time clamping by machining, it can be ensured that the sizes of the middle frame 2 and the inner cavity of the front frame 1 have higher consistency, and then the assembly accuracy of the backlight module is improved, and the quality of the backlight module is improved.

Further, the clamping nails 3 are connected to two side walls of the middle frame 2 in a sliding mode, the fixing frame 6 is arranged below the middle frame 2, the fixing frame 6 is connected with the middle frame 2 through screws, the light guide plate 11 can be clamped inside the middle frame 2 through the clamping nails 3, and the tight connection of the light guide plate 11, the reflecting sheet 10, the composite film 9, the diffusion sheet 8 and the liquid crystal display panel 5 is achieved.

Further, the fixed frame 6 comprises a right frame 601 and a left frame 602 arranged on one side of the right frame 601, the left frame 602 is connected with the right frame 601 in an inserting mode, the adjusting groove 13 is formed in the middle frame 2, the plate assembly 14 is clamped and pressed in the adjusting groove 13, the right frame 601 and the left frame 602 can be oppositely inserted, connection and installation of the fixed frame 6 and the plate assembly 14 are achieved, and assembly efficiency of the backlight module can be improved.

Further, a rear cover plate 7 is arranged below the fixing frame 6, and the rear cover plate 7 is connected with the fixing frame 6 through screws, so that the rear cover plate 7 is tightly connected with the fixing frame 6.

Further, diffusion piece 8 is lapped below liquid crystal display panel 5, and diffusion piece 8 below is lapped there is compound film 9, and diffusion piece 8 can provide an even area source for the display, and compound film 9 can improve the angular distribution of light, concentrates on the angle of looking at with light, reduces the loss simultaneously, improves total light-emitting luminous flux.

Further, diffusion piece 8 has been lapped to the 9 below of complex film, and diffusion piece 8 below overlap joint has light guide plate 11, and light guide plate 11 passes through bail 3 crimping with center 2, and light guide plate 11 is made by the ya keli plastics of high luminousness, and the surface is very smooth level and smooth, makes most inside light can be on its level and smooth surface regular total reflection, and can not jet out light guide plate 11 outsidely.

Further, light bars 12 are arranged on two sides of the lower portion of the light guide plate 11, the light bars 12 are in compression joint with the light guide plate 11, the front frame 1, the middle frame 2, the fixing frame 6 and the rear cover plate 7 are made of hard plastics, and the light bars 12 irradiate line light sources onto the light guide plate 11 and convert the line light sources into the surface light sources.

The specific implementation process of this embodiment is as follows: when assembling the backlight module, the inner cavities of the front frame 1 and the middle frame 2 are completed by one-time clamping by machining, which can ensure that the size of the inner cavities of the middle frame 2 and the front frame 1 has higher consistency, further improve the assembly accuracy of the backlight module and improve the quality of the backlight module, a liquid crystal display panel 5, a diffusion sheet 8, a composite film 9, a diffusion sheet 8 and a light guide plate 11 are sequentially placed in the cavity formed by the front frame 1 and the middle frame 2, then a staple bolt 3 is pushed to tightly fix the light guide plate 11, the light guide plate 11 can be oppositely inserted through a right frame 601 and a left frame 602 to realize the connection and installation of a fixed frame 6 and a plate assembly 14, the fixed frame is fixed below the middle frame 2, the assembly efficiency of the backlight module can be improved, then light bars 12 are fixed on two sides below the light bars, a rear cover plate 7 is covered to complete the installation of the backlight module, a backlight module, the production cost of the backlight module can be effectively reduced.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims (7)

1. The utility model provides a bar liquid crystal display plastics backlight unit which characterized in that: the liquid crystal display panel comprises a front frame (1), a middle frame (2) and a liquid crystal display panel (5), wherein the middle frame (2) is formed below the front frame (1), a clamping groove (4) is formed in the middle of the lower portion of the front frame (1), the liquid crystal display panel (5) is arranged inside the clamping groove (4), and the inner cavities of the front frame (1) and the middle frame (2) are machined through one-step clamping.

2. The plastic backlight module for bar-type liquid crystal display screen of claim 1, wherein: sliding connection has bail (3) on center (2) both sides wall, center (2) below is provided with fixed frame (6), fixed frame (6) with center (2) pass through the screw connection.

3. The plastic backlight module for bar-type liquid crystal display screen of claim 2, characterized in that: fixed frame (6) are in including right frame (601) and setting left frame (602) of right frame (601) one side, left side frame (602) with right frame (601) are pegged graft, center (2) inside shaping has receipts whole groove (13), the inside card of receipts whole groove (13) is pressed there is plate assembly (14).

4. The plastic backlight module for bar-type liquid crystal display screen of claim 3, characterized in that: and a rear cover plate (7) is arranged below the fixed frame (6), and the rear cover plate (7) is connected with the fixed frame (6) through screws.

5. The plastic backlight module for bar-type liquid crystal display screen of claim 4, wherein: a diffusion sheet (8) is overlapped below the liquid crystal display panel (5), and a composite film (9) is overlapped below the diffusion sheet (8).

6. The plastic backlight module for bar-type liquid crystal display screen of claim 5, wherein: diffusion sheet (8) are lapped below the composite film (9), light guide plate (11) are lapped below the diffusion sheet (8), and the light guide plate (11) and the middle frame (2) are in compression joint through the staple (3).

7. The plastic backlight module for bar-type liquid crystal display screen of claim 6, wherein: light guide plate (11) below both sides all are provided with lamp strip (12), lamp strip (12) with light guide plate (11) crimping, preceding frame (1) center (2) fixed frame (6) and back shroud (7) all have rigid plastic to make.

Images