CN210181345U

CN210181345U - Mini LED backlight module capable of improving lighting effect and brightness

Info

Publication number: CN210181345U
Application number: CN201920822901.7U
Authority: CN
Inventors: Xianchao Zha; 查显超; Rui Liu; 刘瑞; Qingfeng Lin; 林庆锋
Original assignee: Huizhou Long Li Technology Development Co Ltd
Current assignee: Huizhou Long Li Technology Development Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-03-24
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses an improve light efficiency and improve mini led backlight unit of luminance, include: the circuit board, locate a plurality of groups mini led on the circuit board and locating support on the circuit board, a plurality of groups mini led are the array and arrange, the support includes first support and second support, first support is located mini led periphery and is surrounded whole mini led, the second support is located between adjacent two sets of mini led, first support is the latticed of fretwork with the second support. The utility model discloses an increase between the mini led and set up the second support, the second support is the latticed of fretwork, both can the reverberation, can transmit light again, compares with traditional mini led backlight, and luminance can promote 10% -20% to do not increase the consumption, mix the light moreover and obtain improving, improved the light-emitting effect greatly.

Description

Mini LED backlight module capable of improving lighting effect and brightness

Technical Field

The utility model relates to a liquid crystal display field especially relates to an improve mini led backlight unit of light efficiency and luminance.

Background

Because the Mini LED has the excellent characteristics of display effect which is comparable to that of the OLED, lower large-scale mass production cost, strong adaptability of an application end and the like, the Mini LED is considered as the only key technology which can impact the industrial pattern of the existing OLED in a small-distance field before the era of the Micro LED. Because the Mini LED backlight can greatly improve the display image quality, the display image quality is comparable to that of an OLED in the aspects of wide color gamut, ultrahigh contrast and HDR display, and meanwhile, compared with the OLED with the same size, the price has outstanding advantages, higher cost performance and huge development potential.

If the light-emitting property of the Mini LED chip is poor and the light-emitting angle is not high enough, the optical characteristics of the Mini LED chip are difficult to effectively exert, and the display effect is poor. Although the Mini LED backlight can greatly improve the display image quality and has the advantages of wide color gamut and ultrahigh contrast, the aim can be achieved only by the need of higher brightness of the Mini LED backlight, and compared with the traditional LED backlight, the Mini LED backlight has no advantage under the condition of the same power consumption; under the condition that the brightness of the Mini LED backlight is improved by improving the power consumption, the handheld device cannot accept the high power consumption requirement.

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, provide a miniled backlight unit who improves the light efficiency and improve luminance.

The technical scheme of the utility model as follows: the utility model provides a mini led backlight unit who improves light efficiency and improve luminance is provided, includes: the circuit board, locate a plurality of groups mini led on the circuit board and locating support on the circuit board, a plurality of groups mini led are the array and arrange, the support includes first support and second support, first support is located the peripheral whole mini led that surrounds of minified, the second support is located between adjacent two sets of mini led, first support is the latticed of fretwork with the second support.

Further, the device comprises a filter membrane arranged above the mini led, a lower diffusion membrane arranged on the filter membrane, an upper diffusion membrane arranged on the lower diffusion membrane, a quantum dot membrane arranged on the upper diffusion membrane, a lower light-adding membrane arranged on the quantum dot membrane, an upper light-adding membrane arranged on the lower light-adding membrane, and a light-shielding glue arranged on the upper light-adding membrane.

Further, the second bracket is trapezoidal.

Furthermore, the width of the bottom edge of the second support is 0.5mm-3mm, the width of the top edge of the second support is 0.2mm-1mm, the height of the second support is 0.2mm-1mm, and the included angle between the oblique edge and the bottom edge is 20-60 degrees.

Furthermore, the second support is made of a high-reflectivity plastic material.

Further, the second bracket is made of polycarbonate resin or polyphthalamide with the reflectivity of more than 98%.

Further, the first support comprises a first step, a second step and a third step, the light filtering film, the lower diffusion film, the upper diffusion film, the quantum dot film, the lower brightness enhancement film and the upper brightness enhancement film are arranged on the first step, and the shading glue is arranged on the second step.

Furthermore, a plurality of mini led chips are packaged in each group of mini led.

Furthermore, a pouring sealant is coated outside the mini led chip, and the pouring sealant is hemispherical.

Further, the circuit board is a PCB board or an FPC board.

Adopt above-mentioned scheme, the utility model discloses an increase between the mini led and set up the second support, the second support is the latticed of fretwork, both can the reverberation, can transmit light again, compares with traditional mini led backlight, and luminance can promote 10% -20% to do not increase the consumption, mix the light moreover and improve, improved the light-emitting effect greatly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

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

Fig. 3 is a schematic diagram of the light transmission 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. 1, the present invention provides a mini led backlight module with improved lighting effect and brightness, comprising: the circuit board 1, locate a plurality of groups mini led2 on the circuit board 1 and locate support on the circuit board 1, a plurality of groups mini led2 are the array and arrange, circuit board 1 is PCB board or FPC board. The support includes first support 11 and second support 12, first support 11 is located the mini led2 periphery and is surrounded whole mini led2, second support 12 is located between adjacent two sets of mini led2, first support 11 is the latticed of fretwork with second support 12. The mini led chip among traditional mini backlight unit is the whole board encapsulation, and the utility model discloses not only establish first support 11 around mini led2, establish latticed second support 12 between mini led2 moreover, this 12 fretworks of second support, both can the reverberation, can transmit light again, can improve backlight unit's luminance, and the mixed light obtains improving, improves the light-emitting effect.

Referring to fig. 2 and 3, the second frame 12 is similar to a trapezoid, the width a of the bottom side is 0.5mm-3mm, the width b of the top side is 0.2mm-1mm, the height c is 0.2mm-1mm, and the included angle between the oblique side and the bottom side is 20 ° to 60 °. The light emitted by the mini led2 is reflected by the inclined edges and the top edges of the trapezoidal support and the grid-shaped structure inside the trapezoidal support, so that the light rays are fully mixed, the reflectivity is improved, and the reflectivity can reach more than 98%.

The second frame 12 is made of a plastic material with high reflectivity, such as Polycarbonate (PC) and polyphthalamide (PPA) with reflectivity greater than 98%, and the material with high reflectivity can better reflect light, so as to further improve the brightness of the light.

Referring to fig. 1, the backlight module further includes a light filter 3 disposed above the mini led2, a lower diffusion film 4 disposed on the light filter 3, an upper diffusion film 5 disposed on the lower diffusion film 4, a quantum dot film 6 disposed on the upper diffusion film 5, a lower brightness enhancement film 7 disposed on the quantum dot film 6, an upper brightness enhancement film 8 disposed on the lower brightness enhancement film 7, and a light-shielding adhesive 9 disposed on the upper brightness enhancement film 8.

The first support 11 comprises a first step 111, a second step 112 and a third step 113, the filter film 3, the lower diffusion film 4, the upper diffusion film 5, the quantum dot film 6, the lower brightness enhancement film 7 and the upper brightness enhancement film 8 are arranged on the first step 111, and the light shielding glue 9 is arranged on the second step 112. Through setting up the step, can fix a position each optical film piece and shading glue better, easy to assemble.

A plurality of mini led chips are packaged in each group of mini led2 and can be packaged in 1 group, 4 groups or 16 groups.

The mini led chip is coated with a pouring sealant 21, the pouring sealant 21 is hemispherical, and the hemispherical design can uniformly scatter light.

To sum up, the utility model discloses an increase between the mini led and set up the second support, the second support is the latticed of fretwork, both can the reverberation, can transmit light again, compares with traditional mini led backlight, and luminance can promote 10% -20% to do not increase the consumption, mix the light moreover and improve, improved the light-emitting effect greatly.

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 an improve mini led backlight unit of light efficiency and luminance, its characterized in that includes: the circuit board, locate a plurality of groups mini led on the circuit board and locating support on the circuit board, a plurality of groups mini led are the array and arrange, the support includes first support and second support, first support is located mini led periphery and is surrounded whole minified, the second support is located between adjacent two sets of mini led, first support is the latticed of fretwork with the second support.

2. The mini led backlight module for improving light efficiency and increasing brightness according to claim 1, further comprising a light filter film disposed above the mini led, a lower diffusion film disposed on the light filter film, an upper diffusion film disposed on the lower diffusion film, a quantum dot film disposed on the upper diffusion film, a lower brightness enhancement film disposed on the quantum dot film, an upper brightness enhancement film disposed on the lower brightness enhancement film, and a light shielding adhesive disposed on the upper brightness enhancement film.

3. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 1, wherein the second frame is trapezoidal.

4. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 3, wherein the width of the bottom edge of the second frame is 0.5mm-3mm, the width of the top edge is 0.2mm-1mm, the height of the top edge is 0.2mm-1mm, and the included angle between the oblique edge and the bottom edge is 20 ° -60 °.

5. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 1, wherein the second frame is made of plastic material with high reflectivity.

6. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 5, wherein the second frame is made of polycarbonate resin or polyphthalamide with reflectivity greater than 98%.

7. The mini led backlight module with improved light efficiency and increased brightness according to claim 2, wherein the first bracket comprises a first step, a second step and a third step, the light filter, the lower diffusion film, the upper diffusion film, the quantum dot film, the lower brightness enhancement film and the upper brightness enhancement film are disposed on the first step, and the light shielding glue is disposed on the second step.

8. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 1, wherein each set of mini led has a plurality of mini led chips encapsulated therein.

9. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 8, wherein a potting adhesive is coated outside the mini led chip, and the potting adhesive is hemispherical.

10. The mini led backlight module with improved light efficiency and increased brightness as claimed in claim 8, wherein the circuit board is a PCB board or an FPC board.