CN210109526U

CN210109526U - Lamp strip of structure of being glued of setting up a little

Info

Publication number: CN210109526U
Application number: CN201921154368.8U
Authority: CN
Inventors: 张小齐; 罗志斌; 曾晓虎
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-02-21
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a lamp strip of structure of being dotted with cement, include: FPC, FPC includes a first overburden, it has a plurality of windows to open on the first overburden, be equipped with the pad in the window, be equipped with the LED lamp on the pad, it is used for fixing to be equipped with on the FPC the first piece of gluing of LED, the second is glued piece, the third and is glued at least one kind in the piece. The utility model fixes the LED lamp and the FPC more firmly and is not easy to fall off through the dispensing treatment of the LED lamp and the FPC, thereby ensuring the uniformity of the picture brightness; the design of narrow frames around can be realized, and the thickness is reduced to below 1 mm; the number of the LED lamps is reduced, and the cost is reduced.

Description

Lamp strip of structure of being glued of setting up a little

Technical Field

The utility model relates to a backlight unit technical field especially relates to a lamp strip of structure is glued to setting up a little.

Background

With the rapid development of electronic products, screen display effects with higher image quality are being pursued, such as: narrow frame, full screen, perforation type, water droplet type, the development of the beauty point type and corresponding screen display effect handle.

Due to technical bottlenecks and cost, most of the existing smart phones still adopt liquid crystal screens, and are expected to be dominant in the long-term future. The liquid crystal does not emit light, and the image can be displayed only by the bottom matched backlight module, and the image is required to have high brightness and uniform brightness. To the development of narrow frame, full-face screen, along with the frame is more and more narrow, the size of corresponding FPC and LED lamp also requires the more and more narrow of preparation, can cause the fixed area of LED lamp to diminish like this, and fixed arouses the LED lamp to drop easily, influences display screen's luminance and homogeneity. Therefore, the LED lamp and the FPC are subjected to dispensing treatment, so that the LED lamp and the FPC are firmly fixed and are not easy to fall off.

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, providing a lamp strip of structure is glued to the point.

The technical scheme of the utility model as follows: the utility model provides a lamp strip of some glued structures, includes: FPC, FPC includes a first overburden, it has a plurality of windows to open on the first overburden, be equipped with the pad in the window, be equipped with the LED lamp on the pad, it is used for fixing to be equipped with on the FPC the first piece of gluing of LED lamp, the second is glued piece, the third and is glued at least one in the piece.

Furthermore, the first rubber block is arranged between the bottom of the LED lamp and the first covering layer.

Furthermore, a first microstructure is arranged at the position, corresponding to the first rubber block, of the first covering layer, and a gap exists between the first rubber block and the bonding pad as well as between the first rubber block and the solder paste.

Furthermore, the second rubber block is arranged on the back of the light-emitting surface of the LED lamp, and the second rubber block extends to the first covering layer.

Furthermore, a second microstructure is arranged at the position, corresponding to the second rubber block, of the first covering layer.

Further, the third glue block is filled between two adjacent LED lamps.

Further, the first glue block, the second glue block and the third glue block are all UV glue or thermosetting glue, the glue viscosity is 300pa · s, and the glue dispensing area is as follows: 0.3 mm-0.5 mm, and adopting a nozzle mode to perform glue dispensing.

Further, the FPC further includes, laminated in order from the front surface to the back surface: the first adhesive layer, the first electroplated layer, the first copper foil layer, the base material layer, the second copper foil layer, the second electroplated layer, the second adhesive layer and the second covering layer are arranged on the upper surface of the first adhesive layer, and a reflecting layer is arranged on the upper surface of the first covering layer.

Further, the reflecting layer is a white ink layer, a reflecting film or a white film.

Furthermore, the pad is of a surrounding type spider grid pad structure.

By adopting the scheme, the LED lamp and the FPC are more firmly fixed by dispensing the LED lamp and the FPC, so that the LED lamp and the FPC are not easy to fall off, and the uniformity of the picture brightness is ensured; the design of narrow frames around can be realized, and the thickness is reduced to below 1 mm; the number of the LED lamps is reduced, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of a prior art light bar;

FIG. 2 is a schematic view of the FPC stacking structure of the present invention;

fig. 3 is a schematic front structural view of the FPC in an embodiment of the light bar of the spot gluing structure of the present invention;

fig. 4 is a cross-sectional view of an embodiment of a light bar of the spot gluing structure of the present invention;

fig. 5 is a schematic front view of the FPC in another embodiment of the light bar of the spot gluing structure of the present invention;

fig. 6 is a cross-sectional view of another embodiment of the light bar of the spot gluing structure of the present invention;

fig. 7 is a schematic front structure view of an FPC in another embodiment of the light bar of the spot gluing structure of the present invention;

fig. 8 is a cross-sectional view of another embodiment of the light bar of the spot gluing structure of the present invention;

FIG. 9 is a schematic diagram of a pad structure of a prior art light bar;

fig. 10 is the structure diagram of the bonding pad in the light bar of the spot gluing structure of the present invention.

Detailed Description

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

Referring to fig. 2 to 8, the present invention provides a light bar with a spot gluing structure, including: an FPC1, the FPC1 comprising, laminated in order from the front side to the back side: first overburden 11, first glue film 12, first electroplated layer 13, first copper foil layer 14, substrate layer 15, second copper foil layer 16, second electroplated layer 17, second glue film 18, second overburden 19, it has a plurality of windows 2 to open on the first overburden 11, be equipped with pad 3 in the window 2, be equipped with LED lamp 4 on the pad 3. In order to avoid LED lamp 4 drops, the utility model discloses it is right LED lamp 4 has carried out the point and has glued the processing, through set up gluey piece on FPC1, makes LED lamp 4 is in it is more firm to fix on FPC1, is difficult for droing to guaranteed the homogeneity of picture luminance, can realize backlight unit narrow frame design all around, can reduce backlight unit's thickness to below 1mm simultaneously, thereby satisfy the demand of super narrow frame and ultra-thin design.

The following three implementation modes can be realized according to different dispensing positions:

referring to fig. 3 and 4, a first glue block 5 is disposed between the bottom of the LED lamp 4 and the first cover layer 11, that is, glue is dispensed on the first cover layer 11 around the bonding pad 3, the LED lamp 4 is mounted, and then the glue is cured. The addition of the first glue block 5 enables the LED lamp 4 to be bonded to the FPC1 more firmly, while also increasing the flatness. In this embodiment, in order not to affect the conductivity of the pad 3, a certain gap exists between the first rubber block 5 and the pad 3 and between the first rubber block and the solder paste. In order to increase the bonding strength of the first adhesive block 5 on the first cover layer 11, a first microstructure is disposed at a position where the first cover layer 11 is dispensed, specifically, the first microstructure may be composed of a number of concave-convex structures, and the concave-convex structures increase the contact area between the first cover layer 11 and the first adhesive block 5, thereby increasing the bonding strength.

Referring to fig. 5 and 6, in the present embodiment, glue is dispensed on the back of the light emitting surface of the LED lamp 4 to form the second glue block 6, the second glue block 6 extends downward to the first cover layer 11, and the second glue block 6 can adhere the LED lamp 4 to the FPC 1. Specifically, in this embodiment, a second microstructure is disposed at a position of the first cover layer 11 corresponding to the second rubber block 6, the second microstructure may be composed of a plurality of concave-convex structures, and the concave-convex structures can increase a contact area between the second rubber block 6 and the second cover layer 11, so as to increase an adhesion effect.

Referring to fig. 7 and 8, in the present embodiment, a third adhesive block 7 is filled between two adjacent LED lamps 4, so that the two adjacent LED lamps 4 are adhered and fixed to each other, thereby increasing the firmness of the LED lamps 4, and meanwhile, the third adhesive block 7 may or may not contact with the first cover layer 11.

Please refer to fig. 3 to 8 again, specifically, the first glue block 5, the second glue block 6, and the third glue block 7 of the present invention are all UV glue or thermosetting glue, wherein the glue viscosity is 300pa · s, and the glue dispensing area is: 0.3 mm-0.5 mm, adopting nozzle mode to carry out glue dispensing, wherein the adhesive strength of the specific glue can be achieved by adjusting the formula of the glue.

Referring to fig. 2, in the present embodiment, a reflective layer 8 is disposed on the upper surface of the first covering layer 11, and the reflective layer 8 is a white ink layer, a reflective film, or a white film.

Referring to fig. 9 and 10, a structure of a bonding pad c on a conventional light bar FPC is shown in fig. 9, but the LED light of the bonding pad structure is easily tilted and tilted, and the bonding pad has insufficient strength and is easily detached. This embodiment adopts modified pad structure, as shown in fig. 10, pad 3 is spider net pad structure, the circuit of pad 3 is the surrounding type design all around, and this kind of design can make pin intensity increase, thereby improves 4 welding perk of LED lamp and crooked problem.

In summary, the utility model fixes the LED lamp and the FPC more firmly and is not easy to fall off through the dispensing treatment of the LED lamp and the FPC, thereby ensuring the uniformity of the picture brightness; the design of narrow frames around can be realized, and the thickness is reduced to below 1 mm; the number of the LED lamps is reduced, and the cost is reduced.

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 lamp strip of some glued structures, its characterized in that includes: FPC, FPC includes a first overburden, it has a plurality of windows to open on the first overburden, be equipped with the pad in the window, be equipped with the LED lamp on the pad, it is used for fixing to be equipped with on the FPC the first piece of gluing of LED, the second is glued piece, the third and is glued at least one kind in the piece.

2. The light bar with spot gluing structure of claim 1, wherein the first glue block is disposed between the bottom of the LED light and the first cover layer.

3. The light bar with spot gluing structure of claim 2, wherein a first microstructure is arranged on the first covering layer corresponding to the first glue block, and a gap is formed between the first glue block and the bonding pad and between the first glue block and the solder paste.

4. The light bar with spot gluing structure of claim 1, wherein the second glue block is arranged on the back of the light emitting surface of the LED lamp, and the second glue block extends to the first covering layer.

5. The light bar with spot gluing structure of claim 4, wherein the first covering layer is provided with a second microstructure corresponding to the second glue block.

6. The light bar with spot gluing structure of claim 1, wherein the third glue block is filled between two adjacent LED lights.

7. The light bar with spot gluing structure of any one of claims 1 to 6, wherein the first glue block, the second glue block and the third glue block are all UV glue or thermosetting glue, the glue viscosity is 300 pa-s, and the glue dispensing area is as follows: 0.3 mm-0.5 mm, and adopting a nozzle mode to perform glue dispensing.

8. The light bar with spot gluing structure of claim 1, wherein the FPC further comprises, stacked from front to back in sequence: the first adhesive layer, the first electroplated layer, the first copper foil layer, the base material layer, the second copper foil layer, the second electroplated layer, the second adhesive layer and the second covering layer are arranged on the upper surface of the first adhesive layer, and a reflecting layer is arranged on the upper surface of the first covering layer.

9. The light bar with spot gluing structure of claim 8, wherein the reflective layer is a white ink layer, a reflective film or a white film.

10. The dotted structure light bar of claim 1, wherein the pad is a surrounding spider grid pad structure.