CN211479545U

CN211479545U - Narrow-frame backlight module structure and display device

Info

Publication number: CN211479545U
Application number: CN202020197243.XU
Authority: CN
Inventors: 王武
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-09-11
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a narrow frame backlight unit structure and display device, wherein the backlight unit structure includes: the backplate, locate the barricade at backplate edge, locate the backplate top just is located inboard optical diaphragm of barricade, with barricade matched with briquetting, the briquetting can block realize right on the barricade optical diaphragm's is fixed. The fixing structure of the utility model meets the design requirement of the narrow frame of the backlight module; the assembly difficulty of the optical diaphragm is simplified; the method is suitable for assembling and fixing the optical diaphragm which is easily fragile in material; the fixing problem of the optical film when the backlight module has no glue frame is solved, and the backlight module is particularly suitable for a direct type backlight structure with medium and large size.

Description

Narrow-frame backlight module structure and display device

Technical Field

The utility model relates to a backlight unit technical field especially relates to a narrow frame backlight unit structure and display device.

Background

The narrow frame design in the backlight module gradually replaces the old-fashioned wide frame design, which brings about not little challenge to the process, design and assembly, so how to fix some parts in the backlight module still needs to be solved, especially the fixing problem of the diffusion plate under the premise of the narrow frame, and the problem needs to be solved urgently.

In the present straight following formula TV backlight unit, the fixed mode of diffuser plate is: and the fixing is carried out in the XY direction by adopting a rivet or other limiting modes, and the fixing is carried out in the Z direction by generally adopting a rubber frame to press. But the existence of the rubber frame makes the frame wider, which is not favorable for the design of the narrow frame of the whole backlight module.

Therefore, the prior art is not sufficient and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a narrow frame backlight unit structure and display device.

The technical scheme of the utility model as follows: provide narrow frame backlight unit structure, include: the backplate, locate the barricade at backplate edge, locate the backplate top just is located inboard optical diaphragm of barricade, with barricade matched with briquetting, the briquetting can block realize right on the barricade optical diaphragm's is fixed.

Further, the briquette includes: the inner side wall, with the lateral wall that the medial wall set up relatively, connect the medial wall with the connecting portion on the top of lateral wall.

Be equipped with a plurality of buckles on the lateral wall, the lateral wall of barricade corresponds the buckle is equipped with a plurality of draw-in grooves, the buckle can the card go into correspondingly in the draw-in groove.

The inner side wall is provided with a fixing part, and the fixing part is used for fixing the optical diaphragm.

Furthermore, the fixing portion includes a first blocking piece, one end of the first blocking piece is fixed on the inner side wall, the other end of the first blocking piece extends towards the side of the optical membrane, and the first blocking piece can be pressed on the upper surface of the optical membrane.

The first baffle plate and the inner side wall are of an integral structure.

Further, the fixing portion comprises an opening formed in the inner side wall, at the moment, a protruding block is arranged on the optical membrane corresponding to the opening, the protruding block can be clamped into the opening, and the top of the opening can be pressed on the upper surface of the protruding block.

Furthermore, the fixing portion further comprises a second blocking piece, one end of the second blocking piece is arranged at the top of the opening, the other end of the second blocking piece extends towards the side of the outer side wall, and the second blocking piece can be pressed on the upper surface of the protruding block.

The second baffle plate and the inner side wall are of an integral structure.

Further, the opening and the second blocking piece are formed by bending the inner side wall to the side of the outer side wall by 90 degrees.

And a groove is formed in the top of the retaining wall corresponding to the second retaining plate.

Furthermore, the briquetting card is gone into the evagination wall department of barricade, the draw-in groove with the recess is all located the evagination wall department of barricade.

Further, the briquetting is the U type structure, the briquetting is the metal briquetting.

Furthermore, the number of the buckles and the number of the clamping grooves are two.

The optical film is a diffusion plate.

The utility model also provides a display device, include as above the backlight unit structure.

By adopting the scheme, the fixing structure of the utility model meets the design requirement of the narrow frame of the backlight module; the assembly difficulty of the optical diaphragm is simplified; the method is suitable for assembling and fixing the optical diaphragm which is easily fragile in material; the problem of fixing the optical film when the backlight module has no rubber frame is solved; the structure is particularly suitable for the direct type backlight structure with medium and large size.

Drawings

Fig. 1 is an exploded view of an embodiment of a narrow-bezel backlight module structure of the utility model;

fig. 2 is a schematic structural view of the narrow-frame backlight module according to an embodiment of the present invention after assembly;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a perspective view of a pressing block in an embodiment of the narrow-frame backlight module of the present invention;

FIG. 6 is a cross-sectional view of a pressing block according to an embodiment of the narrow-frame backlight module of the present invention;

fig. 7 is a cross-sectional view of the narrow-frame backlight module according to another embodiment of the present invention after assembly.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 7, the present invention provides a narrow-frame backlight module structure, including: backplate 1, locate 1 marginal barricade 2 of backplate, locate 1 top of backplate and be located 2 inboard optical film 3 of barricade, with 2 matched with briquettings of barricade, the briquetting can block realize right on the barricade 2 optical film 3's is fixed. Specifically, in the present embodiment, the optical film 3 is a diffusion plate, but may be another optical film. Specifically, in this embodiment, the pressing block is a metal pressing block, and the metal pressing block is used to replace the rubber frame, so that the requirement on the space can be reduced to the greatest extent, and the requirement on the narrow frame is met, the specific material of the pressing block can be a steel material, an aluminum-plated zinc plate, an aluminum material, SECC, SGCC, SUS201, SUS304 and other common hardware materials, and meanwhile, the specific thickness can be selected according to the comprehensive consideration of the size of the assembly space, the structural strength and the like, for example, the thickness range can be 0.1mm to 1.0 mm. The fixing structure of the utility model meets the design requirement of the narrow frame of the backlight module; the assembly difficulty of the optical diaphragm is simplified; the method is suitable for assembling and fixing the optical diaphragm which is easily fragile in material; the problem of fixing the optical film when the backlight module has no rubber frame is solved; the structure is particularly suitable for the direct type backlight structure with medium and large size.

Referring to fig. 1 to 7 again, the present invention realizes the fixing function of the optical film 3 by providing two different fixing portions on the pressing block.

As shown in fig. 1 to 6, a first scheme: in this embodiment, the pressing block 4 includes: the structure comprises an inner side wall 41, an outer side wall 42 arranged opposite to the inner side wall 41, a connecting part 43 for connecting the tops of the inner side wall 41 and the outer side wall 42, and a plurality of buckles 44 arranged on the outer side wall 42. Specifically, in this embodiment, the pressing block 4 is a U-shaped structure and can be exactly clamped on the retaining wall 3. The lateral wall of barricade 2 corresponds buckle 44 is equipped with a plurality of draw-in grooves 5, buckle 44 can block into corresponding in the draw-in groove 5, this kind of unilateral zero clearance design makes briquetting 4 is relative barricade 2 does not have too much relative displacement space, and then the realization is right briquetting 4's limiting displacement. Specifically, in this embodiment, the number of the buckles 44 and the number of the clamping grooves 5 are two, so that the two limiting positions are more stable, and the structural design is simpler.

Specifically, in this embodiment, the fixing portion includes an opening 45 formed on the inner side wall 41, a protrusion 6 is disposed on the optical film 3 corresponding to the opening 45, the protrusion 6 can be inserted into the opening 45, and at this time, the top of the opening 45 presses on the upper surface of the protrusion 6 to fix the optical film 3. Specifically, in this embodiment, the fixing portion further includes a second blocking piece 46, one end of the second blocking piece 46 is fixed on the top of the opening 45, the other end of the second blocking piece 46 extends toward the side of the outer side wall 42, and a lower surface of the second blocking piece 46 is pressed on an upper surface of the bump 6 as a pressing surface to strengthen the fixing effect on the optical film 3. Specifically, in this embodiment, the second flap 46 and the inner sidewall 41 are an integral structure, specifically, in this embodiment, the inner sidewall 41 is folded towards the side of the outer sidewall 42 by 90 ° to form the opening 45 and the second flap 46, where the width of the folded edge is designed according to actual needs. Meanwhile, the top of the retaining wall 2 corresponds to the second blocking piece 46, a groove 7 is formed in the second blocking piece 46, the second blocking piece 46 can be clamped into the groove 7, and the pressing block 4 is clamped on the retaining wall 2, after the positioning is completed, the fixed surface of the pressing block is flush with the fixed portion of the retaining wall 2.

As shown in fig. 7, in a second embodiment, the pressing block 8 includes: the structure comprises an inner side wall 81, an outer side wall 82 arranged opposite to the inner side wall 81, a connecting part 83 for connecting the top parts of the inner side wall 81 and the outer side wall 82, and a plurality of buckles 84 arranged on the outer side wall 82. Specifically, in this embodiment, the pressing block 8 is a U-shaped structure and can be exactly clamped on the retaining wall 3. The lateral wall of barricade 2 corresponds buckle 84 is equipped with a plurality of draw-in grooves 5, buckle 84 can block into correspondingly in the draw-in groove 5, this kind of unilateral zero clearance design makes briquetting 8 is relative barricade 2 does not have too many relative displacement space, and then the realization is right briquetting 8's limiting displacement. Specifically, in this embodiment, the number of the buckles 84 and the number of the clamping grooves 5 are two, so that the two limiting positions are more stable, and the structural design is simpler.

Specifically, in this embodiment, the fixing portion includes a first blocking piece 85, one end of the first blocking piece 85 is disposed on the inner side wall 81, and the other end extends toward the side of the optical film 3, and when the pressing block 8 is clamped into the retaining wall 2, the first blocking piece 85 is just pressed on the upper surface of the optical film 3, so as to fix the optical film 3.

Referring to fig. 1, in this embodiment, in order to cooperate with the pressing block, the inner side wall of the back plate is flush after the pressing block is mounted, and the mounting of the internal light guide plate, the PCB and the like is not affected, the pressing block is clamped into the outer convex wall of the retaining wall 2, and accordingly, the clamping groove 5 and the groove 7 are disposed at the outer convex wall of the retaining wall 2.

To sum up, the fixing structure of the utility model meets the design requirement of the narrow frame of the backlight module; the assembly difficulty of the optical diaphragm is simplified; the method is suitable for assembling and fixing the optical diaphragm which is easily fragile in material; the problem of fixing the optical film when the backlight module has no rubber frame is solved; the structure is particularly suitable for the direct type backlight structure with medium and large size.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a narrow frame backlight unit structure which characterized in that includes: the optical diaphragm fixing device comprises a back plate, a retaining wall arranged at the edge of the back plate, an optical diaphragm arranged above the back plate and positioned on the inner side of the retaining wall, and a pressing block matched with the retaining wall, wherein the pressing block can be clamped on the retaining wall to fix the optical diaphragm;

the briquette includes: the connecting part is connected with the top ends of the inner side wall and the outer side wall;

the outer side wall is provided with a plurality of buckles, the outer side wall of the retaining wall is provided with a plurality of clamping grooves corresponding to the buckles, and the buckles can be clamped into the corresponding clamping grooves;

2. The narrow-bezel backlight module structure of claim 1, wherein the fixing portion comprises a first blocking piece, one end of the first blocking piece is fixed on the inner sidewall, the other end of the first blocking piece extends towards the side of the optical film, and the first blocking piece can press against the upper surface of the optical film;

the first baffle plate and the inner side wall are of an integral structure.

3. The narrow bezel backlight module structure of claim 1, wherein the fixing portion comprises an opening formed on the inner sidewall, at this time, the optical film is provided with a protrusion corresponding to the opening, the protrusion can be snapped into the opening, and a top of the opening can press an upper surface of the protrusion.

4. The narrow-bezel backlight module structure of claim 3, wherein the fixing portion further comprises a second blocking piece, one end of the second blocking piece is disposed at the top of the opening, the other end of the second blocking piece extends towards the outer side wall, and the second blocking piece can press against the upper surface of the protrusion;

the second baffle plate and the inner side wall are of an integral structure.

5. The narrow bezel backlight module structure of claim 4, wherein the opening and the second blocking plate are formed by bending the inner sidewall to the outer sidewall by 90 °;

6. The narrow-bezel backlight module structure as claimed in claim 5, wherein the pressing block is clamped into the outer convex wall of the retaining wall, and the clamping groove and the groove are both disposed on the outer convex wall of the retaining wall.

7. The narrow-bezel backlight module structure of claim 1, wherein the pressing block is a U-shaped structure, and the pressing block is a metal pressing block.

8. The narrow-bezel backlight module structure of claim 1, wherein the number of the fasteners and the number of the slots are two;

the optical film is a diffusion plate.

9. A display device comprising the backlight module structure of any one of claims 1 to 8.