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Direct type backlight module with light bars located on back side of backboard

A backlight module, direct-type technology, applied in the field of direct-type backlight modules, can solve the problems that the reflective sheet and the back plate cannot be well fitted, the assembly process of the backlight module is very demanding, and the reflective sheet is warped, etc. Achieve the effect of improving after-sales maintenance efficiency, reducing R&D costs, and improving flatness

Active Publication Date: 2014-11-19
深圳华康创展科技控股集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it has high requirements on the assembly process of the backlight module, the production efficiency is low, the defect rate is high, and the visual effect is not as good as the side-lit backlight LCD TV.
[0003] In the traditional process, because the currently used light bars, lamp beads, lenses and light bar lines are all located on the same side of the PCB board, the reflector and the back plate cannot fit well, and it will be caused by errors during assembly. The reflector is partially warped, especially around the light strip line, light strip connector and lens

Method used

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  • Direct type backlight module with light bars located on back side of backboard
  • Direct type backlight module with light bars located on back side of backboard
  • Direct type backlight module with light bars located on back side of backboard

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Embodiment Construction

[0030] Direct-lit backlight modules include reflective and refractive backlight modules, such as figure 1 As shown, the main working principle of the reflective lens is that the light is emitted from the LED 3 , passes through the lens 2 and hits the reflective sheet 4 below, and then reflects to the diffuser plate 1 above; figure 2 As shown, the working principle of the refracting lens is that the light emitted from the LED 3 is refracted by the lens 2 and directly hits the diffuser plate 1 above. Therefore, it can be seen that the backlight module has high requirements on the flatness of the reflection sheet 4. If the assembly of the reflection sheet 4 is not flat enough, it will seriously affect the direction of light irradiation, making the brightness of the backlight module uneven, and some places are too bright and some places are too bright. dark situation. Moreover, a small change in the local position of the reflective sheet 4 will change the direction of light irra...

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Abstract

The invention discloses a direct type backlight module with light bars located on the back side of a backboard. The direct type backlight module with the light bars located on the back side of the backboard comprises the light bars, the backboard, lens and a reflector plate, wherein the lens are installed on light beads of the light bars, the reflector plate is installed on the front side of the backboard in an attached mode, a plurality of groups of installation holes which are arranged in order are formed in the backboard where the reflector plate is installed, the installation holes penetrate through the reflector plate and the backboard, and the light beads of the light bars and the lens penetrate through the installation holes, so that the light bars are installed on the back side of the backboard in an attached mode. The direct type backlight module with the light bars located on the back side of the backboard has the advantages that the technological assembly requirements are low, the yield is high, the heat dissipation effect is good, cost is reduced, maintenance efficiency is improved, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of LED liquid crystal television production, in particular to a direct-lit backlight module with a light bar located behind a backboard. Background technique [0002] At present, LED LCD TV backlights are divided into side-type backlight and direct-type backlight. Side-type backlight LCD TVs can be made very thin and have good visual effects, but the cost is high; direct-type backlight LCD TVs are low in cost, but it is difficult to simultaneously Achieve good visual effect and thinness. Among them, the direct-type backlight is divided into refraction-type backlight and reflective-type backlight according to the principle of diffusing light through the lens. The reflective-type backlight module can be made thinner than the refraction-type backlight module, which is the mainstream of direct-type LCD TVs. Recently, The ultra-thin direct-down TV OD15 (the light mixing distance from the reflector to the bottom of the dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S4/00F21S8/00F21V19/00F21V29/00G02F1/13357F21Y101/02F21S4/24F21Y103/10F21Y115/10
Inventor 张超捷
Owner 深圳华康创展科技控股集团有限公司
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