CN210803928U

CN210803928U - Backlight module with comb-shaped lamp panel structure

Info

Publication number: CN210803928U
Application number: CN201921930530.0U
Authority: CN
Inventors: 张小齐; 庄世强; 李伟
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-19
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a take backlight unit of pectination lamp plate structure, include: light source subassembly, set up in the reinforcing plate of light source subassembly below and set up in the optics diaphragm of light source subassembly top, the light source subassembly includes: the circuit board and set up in a plurality of groups lamp strip on the circuit board is provided with a plurality of LED chips on every group lamp strip, the LED chip is the matrix arrangement on the lamp strip, and the interval between the adjacent LED chip equals, the lamp strip is pectination evenly distributed on the light source subassembly, and the interval between the adjacent lamp strip equals, and the interval between the lamp strip is not less than the width of lamp strip. The utility model discloses a set up the lamp strip that the pectination distributes, make the clout after the cutting can form another light source subassembly to this effect that reaches make full use of raw and other materials reduces the manufacturing cost of light source subassembly, and the reinforcing plate has increased the steadiness of lamp strip structure simultaneously, thereby has improved backlight unit's stability.

Description

Backlight module with comb-shaped lamp panel structure

Technical Field

The utility model relates to a liquid crystal display field especially relates to a take backlight unit of pectination lamp plate structure.

Background

The liquid crystal display industry is developing towards highlight, full screen, high color gamut and the like. The backlight module serving as a light source has two setting modes of a direct type and a side type, and manufacturers in the market are actively researching and developing light source structures of direct type backlight modules such as mini-LED, OLED and micro-LED. But development is limited due to manufacturing process, cost, quality, etc. The light source structure of the existing mini-LED, OLED, micro-LED and other direct type backlight modules comprises a circuit board and basic structures such as LED chips distributed on the circuit board in a matrix. Referring to fig. 1, in the conventional structure, the number of LED chips 02 on a circuit board 01 is reduced as much as possible in consideration of a plurality of reasons such as cost and heat dissipation of the LED chips 02. Generally, a certain distance is reserved between the LED chips 02 and the LED chips 02, and the distance is far larger than the width of the LED chips 02 and the width of the bonding pads, so that a plurality of blank areas 03 exist in the circuit board 01, the circuit board 01 is not fully utilized, the price of the circuit board 01 is high, and the whole cost of the backlight module is affected.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a take backlight unit of pectination lamp plate structure, the utilization ratio of increase circuit board to reduce material cost.

The technical scheme of the utility model as follows: the utility model provides a take backlight unit of pectination lamp plate structure includes: light source subassembly, set up in the reinforcing plate of light source subassembly below and set up in the optics diaphragm of light source subassembly top, the light source subassembly includes: the circuit board and set up in a plurality of groups lamp strip on the circuit board is provided with a plurality of LED chips on every group lamp strip, and the interval between the adjacent LED chip equals, the shape of circuit board is pectination structure, and the interval between the adjacent lamp strip equals, and the interval between the lamp strip is not less than the width of lamp strip.

Furthermore, a reflecting layer is arranged between the reinforcing plate and the circuit board.

Furthermore, the reinforcing plate is made of a PET or metal plate.

Further, the optical film includes: the reflecting sheet is arranged on the circuit board and provided with openings corresponding to each group of light bars or each LED chip.

Further, the optical film further includes: a combination of one or more of a diffusion film or a quantum film.

Furthermore, the circuit board is provided with bonding pads corresponding to the LED chips, and a gap exists between the adjacent bonding pads.

Further, the spacing between adjacent LED chips is equal.

According to the above technical scheme, the utility model discloses a set up the lamp strip that the pectination distributes, make the clout after the cutting can form another light source subassembly to this effect that reaches make full use of raw and other materials reduces the manufacturing cost of light source subassembly, and the reinforcing plate has increased the steadiness of lamp strip structure simultaneously, thereby has improved backlight unit's stability.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

FIG. 4 is a schematic view of a light source module.

Fig. 5 is an enlarged view of B in fig. 4.

Fig. 6 is a schematic structural view of a reflector plate.

Fig. 7 is a schematic structural view of the entire PCB.

Fig. 8 is a schematic structural diagram of a cut circuit board.

Fig. 9 is a schematic structural diagram of another circuit board after cutting.

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 5, the present invention provides a backlight module with a comb-shaped lamp panel structure, including: the backlight module comprises a light source assembly 10, a reinforcing plate 30 arranged below the light source assembly 10, and an optical film 20 arranged above the light source assembly 10. The light source assembly 10 includes: the lamp strip comprises a circuit board 11 and a plurality of groups of lamp strips 12 arranged on the circuit board 11. Each group of light bars 12 is provided with a plurality of LED chips 121. The pitches between the adjacent LED chips 121 are equal. The shape of circuit board 11 is comb structure, and the interval between adjacent lamp strip 12 equals, and the interval between lamp strip 12 is not less than the width of lamp strip 12 for circuit board 11 cutting shaping back, the clout is enough to form another light source subassembly 10, reaches the effect of make full use of raw and other materials with this, reduces the manufacturing cost of light source subassembly 10. The reinforcing plate 30 can fix the light bars 12, and a certain interval can be kept between the adjacent light bars 12, so that the stability of the backlight module is improved.

A reflective layer is disposed between the stiffener 30 and the circuit board 11. The reflecting layer plays a role in reflecting light in the interval of the adjacent light bars 12, and the optical display effect of the backlight module is improved.

The reinforcing plate 30 is made of a PET or metal plate, and can fix the light bar 12, so that the light bar 12 cannot bend or move, and certain intervals can be kept between the light bars 12.

Referring to fig. 6, the optical film 20 includes: the reflecting sheet 21 is disposed on the circuit board 11, and the reflecting sheet 21 is provided with an opening 211 corresponding to each group of light bars 12 or each LED chip 121. The opening 211 can accommodate the LED chip 121, so that the optical film 20 does not increase the thickness of the backlight module while improving the optical effect of the backlight module. Meanwhile, the reflector plate 21 has certain strength, and can play a role in assisting in fixing the light bar 12.

The optical film 20 further includes: one or more of the diffusion film or the quantum film are combined and matched differently according to the requirements of the backlight module, so that the optical effect of the backlight module can be further improved.

The circuit board 11 is provided with bonding pads corresponding to the LED chip 121, and there is a gap between adjacent bonding pads, so that short circuit between the bonding pads due to mutual extrusion and overlapping is avoided.

Referring to fig. 7 to 9, the circuit board 11 is formed by cutting a whole board 111, fig. 7 is a whole board, the whole PCB board 111 is cut to form two circuit boards 11, and fig. 8 and 9 are two circuit boards 11 formed after cutting, respectively.

To sum up, the utility model discloses a set up the lamp strip that the pectination distributes, make the clout after the cutting can form another light source subassembly to this effect that reaches make full use of raw and other materials reduces the manufacturing cost of light source subassembly, and the reinforcing plate has increased the steadiness of lamp strip structure simultaneously, thereby has improved backlight unit's stability.

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 take backlight unit of pectination lamp plate structure which characterized in that includes: light source subassembly, set up in the reinforcing plate of light source subassembly below and set up in the optics diaphragm of light source subassembly top, the light source subassembly includes: the circuit board and set up in a plurality of groups lamp strip on the circuit board is provided with a plurality of LED chips on every group lamp strip, the shape of circuit board is pectination structure, and the interval between the adjacent lamp strip equals, and the interval between the lamp strip is not less than the width of lamp strip.

2. The backlight module with comb-shaped light board structure as claimed in claim 1, wherein a reflective layer is disposed between the stiffener and the circuit board.

3. The backlight module with a comb-shaped light board structure as claimed in claim 1, wherein the stiffener is made of a sheet material of PET or metal.

4. The backlight module with comb light plate structure of claim 1, wherein the optical film comprises: the reflecting sheet is arranged on the circuit board and provided with openings corresponding to each group of light bars or each LED chip.

5. The backlight module with comb light plate structure of claim 4, wherein the optical film further comprises: a combination of one or more of a diffusion film or a quantum film.

6. The backlight module with the comb-shaped light board structure as claimed in claim 1, wherein pads are disposed on the circuit board at positions corresponding to the LED chips, and a space is formed between adjacent pads.

7. The backlight module with comb plate structure of claim 1, wherein the distance between adjacent LED chips is equal.