CN212276150U

CN212276150U - Backlight module with good dustproof performance

Info

Publication number: CN212276150U
Application number: CN202020577654.1U
Authority: CN
Inventors: 张利刚
Original assignee: Sichuan Zhaoji Photoelectric Technology Co ltd
Current assignee: Sichuan Zhaoji Photoelectric Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-01-01
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a backlight module with good dustproof performance, which comprises a base, wherein the top of the base is provided with a first groove, the inside of the first groove is sequentially provided with a light screen, a lamp panel, a light guide plate, a vertical polaroid, a liquid crystal screen, a light filter and a horizontal polaroid, the inner sides of the four side walls of the first groove are provided with a square-shaped second foam frame, the top of the base is provided with a square-shaped front frame, the inner side of the bottom of the front frame is provided with a second groove for the square-shaped first foam frame to be inserted into, the bottom of the first foam frame is attached to the top of the horizontal polaroid, the top of the front frame is attached with a dustproof film, the utility model mainly comprises that the bottom of the front frame is provided with a first foam frame, the bottom of the first foam frame is connected with the top of the horizontal polaroid, and as the foam material has strong flexibility, no polaroid gap exists between the front frame, effectively avoiding dust from entering the inside of the base from the outside.

Description

Backlight module with good dustproof performance

Technical Field

The utility model relates to a backlight unit field specifically is a backlight unit that dustproof performance is good.

Background

The backlight module is generally composed of a frame, a light source, a light guide plate and a liquid crystal screen, because the liquid crystal is not a self-luminous material, a light source is additionally provided, the light source is placed behind the liquid crystal screen and is called as a backlight module, because the backlight is composed of a plurality of structures, the backlight module is called as a module, most of components of the existing backlight module are assembled in the frame through shape positioning, namely all the components are overlapped and placed in grooves of the frame and are fixed through a front frame, because gaps exist between the side edges of all the components and the frame, the components cannot be completely closed, when the backlight module is used for a long time, dust enters the module from the gaps, then enters all the components from the side edges of the module, particularly dust exists between the liquid crystal screen and the light guide plate, the black points on the light emitting surface can be influenced, the light emitting quality is influenced, and a backlight module production line with good dustproof performance is urgently lacked for use, dust is prevented from entering the interior of the module from the gap.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a backlight unit that dustproof performance is good, through backlight unit's theory of operation, can solve the dust and get into the inside problem of backlight unit from the gap, effectively increase backlight unit's dustproof effect.

In order to achieve the above object, the utility model provides a following technical scheme: a backlight module with good dustproof performance comprises a base, wherein a first groove is formed in the top of the base, a light shielding plate, a lamp panel, a light guide plate, a vertical polaroid, a liquid crystal display, a light filter and a horizontal polaroid are sequentially arranged in the first groove, the horizontal polaroid is positioned at the top of the first groove, the light shielding plate is positioned at the bottom of the first groove, a square-shaped second foam cotton frame is arranged on the inner side of the four side walls of the first groove, the top of the inner side wall of the second foam cotton frame is attached to the side wall of the horizontal polaroid, the bottom of the inner side wall of the second foam cotton frame is attached to the side wall of the light shielding plate, a groove for inserting the bottom of the second foam cotton is formed in the bottom of the first groove, a square-shaped front frame is arranged at the top of the base, and eight first positioning columns are arranged at equal angles at the bottom of, the confession is seted up at the top of base first locating hole that first locating post was inserted, the inboard of first locating post is provided with the cotton frame male second recess of first bubble that supplies the mouth font, the top laminating of preceding frame has the dust mask.

Preferably, the sizes of the light screen, the lamp panel, the light guide plate, the vertical polarizer, the liquid crystal screen, the light filter and the horizontal polarizer are the same.

Preferably, the depth of the second groove is smaller than 3mm of the thickness of the first foam frame, and the bottom of the first foam frame is attached to the top of the horizontal polarizer.

Preferably, the bottom of the first groove is provided with a left second positioning column and a right second positioning column, and the light shielding plate and the lamp panel are respectively provided with positioning holes for inserting the second positioning columns.

Preferably, the welding of the top of lamp plate has six at least LEDs, LED's light emitting area is located the side, the confession has been seted up to the bottom of light guide plate the leaded light site that LED's top was put into.

Preferably, the lamp plate with the light guide plate is fixed through gluing the frame installation, it is located to glue the frame LED's outside position.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model mainly installs the first foam frame at the bottom of the front frame, the bottom of the first foam frame is connected with the top of the horizontal polaroid, and because the foam material has strong flexibility, no gap exists between the front frame and the horizontal polaroid, thereby effectively preventing dust from entering the interior of the base from the outside;

2. through the utility model, the light screen, the lamp panel, the light guide plate, the vertical polarizer, the liquid crystal screen, the light filter and the horizontal polarizer form a module, and the module is positioned at the inner side of the second foam cotton, so that dust is effectively prevented from entering between adjacent components from the side edges of the components at the side during assembly;

3. the utility model discloses the top laminating of the preceding frame that sets up has the dust mask, effectively avoids falling into the top of horizontal polaroid at the module in the transportation dust, also can play the guard action to horizontal polaroid simultaneously, avoids fish tail horizontal polaroid in the transportation.

Drawings

FIG. 1 is a sectional view of a backlight module with good dustproof performance;

fig. 2 is a top view dispute of the base of the backlight module with good dustproof performance;

fig. 3 is a bottom view of the front frame of the backlight module with good dustproof performance;

fig. 4 is a schematic view of the light guide plate of the backlight module with good dustproof performance.

In the figure: 1. a base; 2. a front frame; 3. a first positioning post; 4. a dust-proof film; 5. a first foam frame; 6. a horizontal polarizer; 7. an optical filter; 8. a liquid crystal screen; 9. a vertical polarizer; 10. a light guide plate; 11. a rubber frame; 12. an LED; 13. a lamp panel; 14. a visor; 15. a second positioning column; 16. light guide dots; 17. a first positioning hole; 18. a first groove; 19. a second foam frame; 20. a second groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.

Referring to fig. 1-4, the present invention provides a technical solution: a backlight module with good dustproof performance comprises a base 1, wherein a first groove 18 is formed in the top of the base 1, a light screen 14, a lamp panel 13, a light guide plate 10, a vertical polarizer 9, a liquid crystal screen 8, a light filter 7 and a horizontal polarizer 6 are sequentially arranged in the first groove 18, the horizontal polarizer 6 is positioned at the top of the first groove 18, the light screen 14 is positioned at the bottom of the first groove 18, and the light screen 14, the lamp panel 13, the light guide plate 10, the vertical polarizer 9, the liquid crystal screen 8, the light filter 7 and the horizontal polarizer 6 are identical in size and convenient to assemble;

the bottom of the first groove 18 is provided with a left second positioning column 15 and a right second positioning column 15, the light shading plate 14 and the lamp panel 13 are respectively provided with positioning holes for the second positioning columns 15 to insert into, the top of the lamp panel 13 is welded with at least six LEDs 12, the light emitting surface of the LED12 is positioned on the side edge, the bottom of the light guide plate 10 is provided with a light guide dot 16 for placing the top of the LED12 into, the light guide dot 16 is a groove formed by laser engraving, and the light emitting surface of the LED12 completely enters the groove, so that light reflection is facilitated;

the lamp panel 13 and the light guide plate 10 are fixedly installed through the rubber frame 11, and the rubber frame 11 is located at the outer side position of the LED12, so that the module is prevented from shifting between the light guide plate 10 and the lamp panel 13 during operation, and astigmatism is prevented;

a square second foam frame 19 is arranged on the inner side of the four side walls of the first groove 18, the top of the inner side wall of the second foam frame 19 is attached to the side wall of the horizontal polaroid 6, the bottom of the inner side wall of the second foam frame 19 is attached to the side wall of the light screen 14, a groove for inserting the bottom of the second foam frame 19 is formed in the bottom of the first groove 18, a square front frame 2 is installed on the top of the base 1, eight first positioning posts 3 are arranged at equal angles on the bottom of the front frame 2, a first positioning hole 17 for inserting the first positioning post 3 is formed in the top of the base 1, a second groove 20 for inserting the square first foam frame 5 is formed in the inner side of the first positioning post 3, the depth of the second groove 20 is smaller than the thickness of the first foam frame 5 by 3mm, the bottom of the first foam frame 5 is attached to the top of the horizontal polaroid 6, and gaps can not exist between the first foam frame 5 and the horizontal polaroid 6, no gap exists between the second foam frame 19 and the side wall of each component;

the top laminating of preceding frame 2 has dust mask 4, effectively avoids falling into the top of horizontal polaroid 6 at the module in the transportation dust, also can play the guard action to horizontal polaroid 6 simultaneously, avoids fish tail horizontal polaroid 6 in the transportation.

The working principle is as follows: the top of first bubble cotton frame 5 is located the inside of second recess 20, the bottom of first bubble cotton frame 5 connects with horizontal polaroid 6's top, and because the cotton material of bubble has very strong elasticity, there is not the gap before making between frame 2 and the horizontal polaroid 6, the bubble is cotton to be in compression state this moment, the inside of dust from outside entering base 1 has effectively been avoided, second bubble cotton frame 19 is located the inside of first recess 18, the inside wall of second bubble cotton frame 19 and the side laminating of each inside subassembly of base 1, second bubble cotton frame 19 is in compression state this moment, when having avoided the dust to get into the base 1 inside from the side, also can make fixed inseparabler between each subassembly, can not have and rock.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a backlight unit that dustproof performance is good, includes base (1), its characterized in that: the LED lamp is characterized in that a first groove (18) is formed in the top of the base (1), a light shielding plate (14), a lamp panel (13), a light guide plate (10), a vertical polarizer (9), a liquid crystal screen (8), a light filter (7) and a horizontal polarizer (6) are sequentially arranged in the first groove (18), the horizontal polarizer (6) is located at the top of the first groove (18), the light shielding plate (14) is located at the bottom of the first groove (18), a square-shaped second foam frame (19) is arranged on the inner sides of the four side walls of the first groove (18), the top of the inner side wall of the second foam frame (19) is attached to the side wall of the horizontal polarizer (6), the bottom of the inner side wall of the second foam frame (19) is attached to the side wall of the light shielding plate (14), a groove for inserting the bottom of the second foam frame (19) is formed in the bottom of the first groove (18), preceding frame (2) of mouth font is installed at the top of base (1), the bottom of preceding frame (2) is equal to the angle and is provided with eight first locating posts (3), the confession has been seted up at the top of base (1) first locating hole (17) of first locating post (3) male, the inboard of first locating post (3) is provided with first bubble cotton frame (5) male second recess (20) that supply the mouth font, the top laminating of preceding frame (2) has dust-proof membrane (4).

2. The backlight module of claim 1, wherein: the size of the light screen (14), the lamp panel (13), the light guide plate (10), the vertical polarizer (9), the liquid crystal screen (8), the optical filter (7) and the horizontal polarizer (6) are the same.

3. The backlight module of claim 1, wherein: the depth of the second groove (20) is smaller than the thickness of the first foam frame (5) by 3mm, and the bottom of the first foam frame (5) is attached to the top of the horizontal polarizer (6).

4. The backlight module of claim 1, wherein: the bottom of first recess (18) is provided with about two second reference column (15), light screen (14) with lamp plate (13) are seted up respectively and are supplied second reference column (15) male locating hole.

5. The backlight module of claim 1, wherein: the welding of the top of lamp plate (13) has six at least LED (12), the light emitting area of LED (12) is located the side, the confession has been seted up to the bottom of light guide plate (10) leaded light site (16) that the top of LED (12) was put into.

6. The backlight module of claim 5, wherein: lamp plate (13) with it is fixed to install through gluing frame (11) between light guide plate (10), it is located to glue frame (11) the outside position of LED (12).