CN203363863U - Straight down type backlight module and display device - Google Patents

Straight down type backlight module and display device Download PDF

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Publication number
CN203363863U
CN203363863U CN2013204338728U CN201320433872U CN203363863U CN 203363863 U CN203363863 U CN 203363863U CN 2013204338728 U CN2013204338728 U CN 2013204338728U CN 201320433872 U CN201320433872 U CN 201320433872U CN 203363863 U CN203363863 U CN 203363863U
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CN
China
Prior art keywords
mode set
down straight
lamp box
aphototropism mode
straight aphototropism
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Application number
CN2013204338728U
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Chinese (zh)
Inventor
王杰
何坤均
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BOE Technology Group Co Ltd
Beijing BOE Vision Electronic Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Vision Electronic Technology Co Ltd
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Priority to CN2013204338728U priority Critical patent/CN203363863U/en
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Abstract

The utility model provides a straight down type backlight module and a display device and belongs to the technical field of display. The straight down type backlight module and the display device can solve the problems that in the prior art, to improve the luminance of a straight down type backlight module, production cost is increased, energy consumption is high, heat dissipation is difficult and the uniformity of luminance is poor. The straight down type backlight module comprises a light box and a light emitting unit, wherein a light box opening is formed in the upper portion of the light box, the light emitting unit is arranged on the bottom of the light box, and a reflecting coating is attached to the inner side of each lateral wall of the light box. According to the straight down type backlight module, the luminance and uniformity of light are improved.

Description

A kind of down straight aphototropism mode set and display unit
Technical field
The utility model belongs to technical field of liquid crystal display, is specifically related to a kind of down straight aphototropism mode set and display unit.
Background technology
The quality that liquid crystal display is good with it and obtain extensive use, but, because liquid crystal itself is not luminous, need a backlight module provide image to show needed light.Backlight module mainly is divided into two kinds of straight-down negative and side entering types.Down straight aphototropism mode set generally comprises lamp box, backlight and luminescence unit, and lamp box top is provided with the lamp box opening, and backlight is located at the lamp box bottom, and luminescence unit is located on backlight, and its light sent is through the direct directive display panels of lamp box opening.Therefore for making all have preferably viewing effect from all angles, LCDs need to meet the requirement of brightness homogeneity, requires the brightness of the emergent light of backlight module must be evenly.For meeting above-mentioned requirements, design during down straight aphototropism mode set, needs to use the optical films such as diffusion barrier, prismatic lens usually, but light after the multilayer optical rete, the phenomenon of light loss is very serious, needs thus to improve the brightness of backlight module.Simultaneously, the resolution ratio of liquid crystal display constantly improves, for realizing that better picture effect also needs the more backlight module of high brightness.
In order to improve the brightness of backlight module, be mostly that the light source power by improving backlight module is realized.Such as for by LED(Light Emitting Diode, light emitting diode) as the backlight module of light source, usually with brightness that more high-power LED improves backlight module.
The inventor finds that in prior art, at least there are the following problems: the brightness meeting that improves backlight module by the light source power (such as using more high-power LED) that improves backlight module causes production cost to raise, energy consumption is large, the heat radiation difficulty, the poor series of problems that waits of brightness uniformity.Therefore, need badly and solve in the situation that the problem of the certain raising of light source power backlight module brightness.
The utility model content
Technical problem to be solved in the utility model comprises, for being the brightness of raising down straight aphototropism mode set in prior art and then causing production cost to raise, energy consumption is large, the heat radiation difficulty, the poor series of problems that waits of brightness uniformity, providing a kind of can reduce production costs, and energy consumption is little, down straight aphototropism mode set and the display unit of the high and good uniformity of brightness.
The technical scheme that solution the utility model technical problem adopts is a kind of down straight aphototropism mode set, it comprises lamp box and luminescence unit, and the lamp box opening is established on described lamp box top, and described luminescence unit is located at described lamp box bottom, wherein, the inside sidewalls of described lamp box is posted reflective coating.
Preferably, described reflective coating is silver-colored reflector plate.
Preferably, described down straight aphototropism mode set also comprises backlight, and described backlight is located at described lamp box bottom, and described luminescence unit is located on described backlight.
Preferably, described backlight is provided with reflectance coating in the face of the surface of described lamp box opening.
Preferably, described lamp box opening is provided with optical film, and described optical film comprises at least one in diffuser plate, diffusion barrier and brightness enhancement film.
Preferably, described luminescence unit is LED lamp bar.
Preferably, described LED lamp bar comprises white LED lamp.
Preferably, described LED lamp bar comprises printed circuit board (PCB).
The sidewall docile of the lamp box of down straight aphototropism mode set of the present utility model has reflective coating, thereby improved the brightness of backlight module, can use thus the light source of low power luminescent device as backlight module, and then it is little to make backlight module have energy consumption, heat radiation easily, life-span is long, cost, uniformity of luminance is good, high-contrast, the advantages such as high color saturation, also can make display unit become ultra-thin slim and graceful.
The technical scheme that solution the utility model technical problem adopts is a kind of display unit, and it comprises above-mentioned down straight aphototropism mode set.
Display unit of the present utility model is owing to comprising above-mentioned down straight aphototropism mode set, so the brightness of display screen is high, good uniformity, and display effect is better.
The accompanying drawing explanation
The section of structure of the down straight aphototropism mode set that Fig. 1 is embodiment 1 of the present utility model;
The schematic diagram of the backlight of the down straight aphototropism mode set that Fig. 2 is embodiment 1 of the present utility model and LED lamp bar;
Wherein Reference numeral is: 1, lamp box; 11, sidewall; 2, LED lamp; 3, LED lamp bar; 4, backlight; 5, reflectance coating; 6, diffuser plate; 7, diffusion barrier; 8, brightness enhancement film; 9, reflective coating.
The specific embodiment
For making those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
The present embodiment provides a kind of down straight aphototropism mode set, and as shown in Figure 1, it comprises lamp box 1 and for luminous luminescence unit.
Lamp box 1 have in sidewall 11(Fig. 1 only show two sidewalls), be provided with the lamp box opening on lamp box 1 top, luminescence unit is located at lamp box 1 bottom, and luminous to the lamp box opening, wherein, reflective coating 9 is posted in lamp box sidewall 11 inboards, and obviously four inside sidewalls of lamp box are all sticked reflective coating 9 reflection ray more.
Preferably, reflective coating 9 is silver-colored reflector plate.The silver reflector plate has very high light reflectance, can, up to 98%, in the inside sidewalls of lamp box, especially, after four inside sidewalls are sticked silver-colored reflector plate, can improve greatly the brightness of backlight module.
Preferably, the down straight aphototropism mode set in the present embodiment also comprises backlight 4, and backlight 4 is located at lamp box 1 bottom, and luminescence unit is located on backlight 4.
Further preferred, backlight 4 is provided with reflectance coating 5 to strengthen light reflection in the face of the surface of lamp box opening.
Preferably, the lamp box opening is provided with optical film, the optical film arranged in the present embodiment comprises diffuser plate 6, diffusion barrier 7 and brightness enhancement film 8, thereby strengthens brightness and the uniformity (can adjust the number of plies of optical film or brightness and the uniformity that type is improved backlight according to actual conditions) of emergent light.
Preferably, luminescence unit be LED lamp bar 3(as depicted in figs. 1 and 2, backlight module in the present embodiment only shows three LED lamp bars 3 on backlight 4, on each LED lamp bar 3, three LED lamps 2 are set, a plurality of LED lamp bars 3 can be set as required, the same quantity that LED lamp 2 on each LED lamp bar 3 also can be set as required in actual production).
Further preferred, LED lamp bar 3 comprises white LED lamp, and the present embodiment only be take white LED lamp and described as example, for the kind of LED lamp, do not limit, and can also be blue LED lamp or other light sources.After the sidewall 11 of lamp box 1 sticks silver-colored reflector plate, the brightness of backlight module has improved, the backlight module of the present embodiment is used low power LDE lamp thus, thereby can reduce heat generation, reduce energy consumption, and low power LED lamp lighting angle is large, can reaches 140 ° (the high-powered LED lamp lighting angle only has 100 ° of left and right usually), thereby can improve the brightness uniformity of backlight module.
Preferred again, LED lamp bar comprises printed circuit board (PCB) (being that the LED lamp is located on printed circuit board (PCB)), adopts printed circuit board (PCB) can make manufacture craft become comparatively simple.
Wherein, printed circuit board (PCB) can be FR4(Fire Resist, is called for short FR, and FR4 is a kind of code name of flame resistant material grade) printed circuit board (PCB).Adopt low-power LED lamp, the heat itself produced is little, therefore can use the FR4 printed circuit board (PCB), so neither can have influence on its service life, also can save production cost.Comparatively speaking, the heat that high-powered LED lamp produces is high, needs to use the MCPCB(Metal Core PCB of good heat dissipation effect, is called for short MCPCB, metal base printed circuit board), therefore correspondingly can improve production cost.
The inside sidewalls docile of the lamp box of the backlight module in the present embodiment has reflective coating, thereby improved the brightness of backlight module, and use the light source of low power luminescent device as backlight module, and then it is little to make backlight module have energy consumption, heat radiation is easily, life-span is long, cost, uniformity of luminance is good, high-contrast, the advantages such as high color saturation, also can make display unit become ultra-thin slim and graceful.
Embodiment 2:
The present embodiment provides a kind of display unit, and it comprises above-mentioned down straight aphototropism mode set, certainly also comprises as known structures such as array base palte, color membrane substrates.Described display unit can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
Display unit in the present embodiment is owing to comprising above-mentioned down straight aphototropism mode set, and the brightness of its emergent light is improved, and the uniformity of brightness improves, thereby the brightness of the display screen of display unit is high and more even, and display effect is better.
Be understandable that, above embodiment is only the illustrative embodiments adopted for principle of the present utility model is described, yet the utility model is not limited to this.For those skilled in the art, in the situation that do not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection domain of the present utility model.

Claims (9)

1. a down straight aphototropism mode set, comprise lamp box and luminescence unit, and the lamp box opening is established on described lamp box top, and described luminescence unit is located at described lamp box bottom, it is characterized in that,
The inside sidewalls of described lamp box is posted reflective coating.
2. down straight aphototropism mode set according to claim 1, is characterized in that, described reflective coating is silver-colored reflector plate.
3. down straight aphototropism mode set according to claim 1, is characterized in that, described down straight aphototropism mode set also comprises backlight, and described backlight is located at described lamp box bottom, and described luminescence unit is located on described backlight.
4. down straight aphototropism mode set according to claim 3, is characterized in that, described backlight is provided with reflectance coating in the face of the surface of described lamp box opening.
5. down straight aphototropism mode set according to claim 1, is characterized in that, described lamp box opening is provided with optical film, and described optical film comprises at least one in diffuser plate, diffusion barrier and brightness enhancement film.
6. down straight aphototropism mode set according to claim 1, is characterized in that, described luminescence unit is LED lamp bar.
7. down straight aphototropism mode set according to claim 6, is characterized in that, described LED lamp bar comprises white LED lamp.
8. down straight aphototropism mode set according to claim 6, is characterized in that, described LED lamp bar comprises printed circuit board (PCB).
9. a display unit, is characterized in that, described display unit comprises: the described down straight aphototropism mode set of claim 1 to 8 any one.
CN2013204338728U 2013-07-19 2013-07-19 Straight down type backlight module and display device Active CN203363863U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013204338728U CN203363863U (en) 2013-07-19 2013-07-19 Straight down type backlight module and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013204338728U CN203363863U (en) 2013-07-19 2013-07-19 Straight down type backlight module and display device

Publications (1)

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CN203363863U true CN203363863U (en) 2013-12-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037366A1 (en) * 2014-09-09 2016-03-17 深圳市华星光电技术有限公司 Backlight module
CN106338859A (en) * 2015-07-06 2017-01-18 三星电子株式会社 Backlight unit of display apparatus and display apparatus
CN108983497A (en) * 2018-08-27 2018-12-11 上海中航光电子有限公司 Mini LED backlight and preparation method thereof and backlight source module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016037366A1 (en) * 2014-09-09 2016-03-17 深圳市华星光电技术有限公司 Backlight module
CN106338859A (en) * 2015-07-06 2017-01-18 三星电子株式会社 Backlight unit of display apparatus and display apparatus
CN108983497A (en) * 2018-08-27 2018-12-11 上海中航光电子有限公司 Mini LED backlight and preparation method thereof and backlight source module

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