Micro-prism film with LED side lighting in backlight module

JI Zhen-qiang; DONG Lian-he; WANG Li; WU Bo-qi; YIN Hang

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Micro-prism film with LED side lighting in backlight module

更新时间：2020-08-12

- Micro-prism film with LED side lighting in backlight module
- Chinese Journal of Liquid Crystals and Displays Vol. 29, Issue 4, Pages: 533-537(2014)
- 作者机构：
  
  长春理工大学光电工程学院,吉林长春,130021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN312+.8
- Received：25 September 2013，
  
  Revised：05 November 2013，
  
  Published Online：01 November 2013，
  
  Published：05 August 2014
- 稿件说明：
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季振强, 董连和, 王丽, 吴博琦, 尹航. 背光模组LED侧照明微棱镜膜的研究[J]. 液晶与显示, 2014,29(4): 533-537

JI Zhen-qiang, DONG Lian-he, WANG Li, WU Bo-qi, YIN Hang. Micro-prism film with LED side lighting in backlight module[J]. , 2014,29(4): 533-537
季振强, 董连和, 王丽, 吴博琦, 尹航. 背光模组LED侧照明微棱镜膜的研究[J]. 液晶与显示, 2014,29(4): 533-537 DOI：

JI Zhen-qiang, DONG Lian-he, WANG Li, WU Bo-qi, YIN Hang. Micro-prism film with LED side lighting in backlight module[J]. , 2014,29(4): 533-537 DOI：

摘要

在液晶显示器背光模组LED侧照明中，为了减小近光源处明暗相间非混光区对导光板有效均匀照明面积的影响，对导光板入光面处微结构进行研究。设计了一种具有阵列棱镜结构的微棱镜膜，在不改变LED与入光面距离以及相邻LED间距的前提下，将其贴附于导光板的入光面处。试验结果表明：当棱镜顶角为105时，入射光线的出射角度最大，微棱镜膜的散光作用可以将非混光区的宽度由原来4 mm减缩至2 mm。有效地增加了近光源处混光区域的面积，对于LED侧照明式背光模组入光面微结构的设计有一定的指导意义。

Abstract

In the LED side lighting of LCD(Liquid Crystal display)backlight module

in order to reduce the influence from the non-mixed area near the light source for the effective uniform illuminating area of the light guide plate

the micro structure on the incident surface of light guide plate is studied. A micro-prism film with prisms array is designed without changing the distance between LED and incident surface

as well as the spacing between adjacent LEDs

it is pasted on the incident surface of the light guide plate. The results show when the apex angle of prism is 105

the emission angle is the largest. The astigmatism of micro-prism film can reduce the non-light mixed area from original 4 mm to 2 mm. It increases the light mixing zone area near the light source effectively. This research is significant to the micro structure design on the incident surface of the side lighting backlight module.

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references

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