Design of all-micro-structure integrated backlight module

Hong-hao YU; Li-li JIA; Dong-lei LI; Ying CHEN; Shuo LIU; Xian YANG; Bo-chang WANG; Hao ZHOU; Hai-wei SUN

doi:10.3788/YJYXS20193410.0959

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Design of all-micro-structure integrated backlight module

Materials and Devices | 更新时间：2020-08-12

- Design of all-micro-structure integrated backlight module
- Chinese Journal of Liquid Crystals and Displays Vol. 34, Issue 10, Pages: 959-968(2019)
- 作者机构：
  
  北京京东方显示技术有限公司, 北京 100176
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20193410.0959
  CLC： TN141.9
- Received：10 June 2019，
  
  Accepted：01 July 2019，
  
  Published：05 October 2019
- 稿件说明：
移动端阅览
Hong-hao YU, Li-li JIA, Dong-lei LI, et al. Design of all-micro-structure integrated backlight module[J]. Chinese journal of liquid crystals and displays, 2019, 34(10): 959-968.
DOI：

Hong-hao YU, Li-li JIA, Dong-lei LI, et al. Design of all-micro-structure integrated backlight module[J]. Chinese journal of liquid crystals and displays, 2019, 34(10): 959-968. DOI： 10.3788/YJYXS20193410.0959.

摘要

为了实现超薄化、高亮度、广视角和高对比度液晶显示，设计一种包含导光和控光微结构的一体化导光板背光模型。通过这些设计方法将全部光学膜材功能集成于一体，并且在侧入式背光模组中实现一维区域亮暗调制。首先，设计合适角度的下表面微棱镜阵列作为导光结构，并且在下表面镀上反射层，反射层功能类似于普通背光模组中的反射片，侧入式光源发出的光线进入导光板内经过微棱镜调制后，从导光板上表面出射。接着对下表面微结构的数量和分布进行优化，使画面亮度均匀。然后，设计优化上表面微透镜阵列，使发光角度收缩，进一步提高中心亮度。最后，将同样14.5 cm（5.7 in）的一体化背光模组与常规架构背光模组对比，说明了这种背光模组具有超薄、高亮和区域调制等优势。仿真结果表明：本文中一体化导光板背光模组厚度仅为0.5 mm，且与常规背光模组相比，其出光效率提高约23.3%，水平发光角度扩大16.6%，垂直发光角度扩大31.5%，中心亮度提升约20.7%，同时可以实现一维区域调制的高对比度显示，满足显示产品的超薄化、极简化、均匀性、高亮度和高对比度等要求。

Abstract

In order to achieve slim outline

high luminance

wide viewing angle and high contrast radio liquid crystal display (LCD)

a backlight model with integrated light guide plate (LGP) that contains light guide and light control micro-structures is designed. Through these design methods

the functions of all optical films are integrated into the LGP and one-dimensional local dimming modulation is able to be realized in edge-lit backlight module (BLM). First of all

a micro-prisms array coated reflective layer with appropriate size and angle are designed as light guide micro-structures on the bottom surface of the integrated LGP

the reflective layer is similar to the reflective film of normal BLM

when the light rays entering LGP

they are controlled by the micro-prisms array and exit from the top surface. Next

the number and distribution of micro-prisms are optimized to improve the uniformity. Then

the micro-lens array on the top surface of LGP is designed to shrink the beam angle and further enhance the central luminance. Finally

the same size 14.5 cm(5.7 in) of an integrated BLM and a normal BLM are compared

it conclude that the integrated BLM has many advantages

such as ultra-thin

high luminance and local dimming ability. The simulation results show that the thickness of the integrated BLM described in this paper is only 0.5 mm. Compared with the conventional BLM

the output efficiency is improved by 23.3%

the horizontal angle is increased by 16.6%

the vertical angle is increased by 31.5%

and the central luminance is improved by 20.7%

meanwhile

high contrast display can be realized through one-dimensional BLM modulation. It meets the requirements of display product for slim outlet

extremely simplified

uniform

high luminance and high contrast ratio.

关键词

Keywords

references

LIU C T. Revolution of the TFT LCD technology[J]. Journal of Display Technology , 2007, 3(4): 342-350.

李继军, 聂晓梦, 甄威, 等.显示技术比较及新进展[J].液晶与显示, 2018, 33(1):74-84.

LI J J, NIE X M, ZHEN W, et al . New developments and comparisons in display technology[J]. Chinese Journal of Liquid Crystals and Displays , 2018, 33(1): 74-84. (in Chinese)

孙学武, 杨慎东, 陈飞, 等.光学增亮膜技术综述及其发展趋势[J].信息记录材料, 2015, 16(6):49-53.

SUN X W, YANG S D, CHEN F, et al . The technical review of bright enhancement film and its development trend[J]. Information Recording Materials , 2015, 16(6): 49-53. (in Chinese)

李子轩.平板显示用复合光学膜的研究[D].北京: 北京交通大学, 2018.

LI Z X. Research on composite optical film for flat panel display[D]. Beijing: Beijing Jiaotong University, 2018. (in Chinese)

YAMADA F, NUMATA H, TAIRA Y. Multi-layered flat-surface micro-optical components directly molded on an LCD panel[J]. Journal of the Society for Information Display , 2003, 11(3): 525-531.

ISHIDA T, KAIDA K, KADOWAKI S, et al . A novel ultra thin backlight system without optical sheets using a newly developed multi-layered light-guide[J]. SID Symposium Digest of Technical Papers , 2010, 41(1): 1104-1107.

PAN J W, FAN C W. High luminance hybrid light guide plate for backlight module application[J]. Optics Express , 2011, 19(21): 20079-20087.

PAN J W, HU Y W. Design of a hybrid light guiding plate with high luminance for backlight system application[J]. Journal of Display Technology , 2013, 9(12): 965-971.

XU P, YAN Z L, WAN L L, et al . Designing new integrated LGP of backlight system using binary optical technique[C]// Proceedings of SPIE 5636 , Holography , Diffractive Optics , and Applications Ⅱ . Beijing, China: SPIE, 2005: 66-72.

XU P, HUANG Y Y, ZHANG X L, et al . Integrated micro-optical light guide plate[J]. Optics Express , 2013, 21(17): 20159-20170.

FENG D, JIN G F, YAN Y B, et al . High quality light guide plates that can control the illumination angle based on microprism structures[J]. Applied Physics Letters , 2004, 85(24): 6016-6018.

WANG Y J, OUYANG S H, CHAO W C, et al . High directional backlight using an integrated light guide plate[J]. Optics Express , 2015, 23(2): 1567-1575.

尹慧娟, 王培娜, 吴波, 等.侧入式局域动态调光背光聚光特性研究[J].液晶与显示, 2018, 33(11):905-910.

YIN H J, WANG P N, WU B, et al . Spotlight characteristics of local dynamic dimming for side-lit backlight[J]. Chinese Journal of Liquid Crystals and Displays , 2018, 33(11): 905-910. (in Chinese)

马科斯·玻恩, 埃米尔·沃耳夫.光学原理: 光的传播、干涉和衍射的电磁理论[M].杨葭荪, 译.7版.北京: 电子工业出版社, 2016.

MA X B, EMIL W. Principles of Opics: Electromagnetic Theory of Propagation , Interference and Diffraction of Light [M]. YANG J S, trans. 7th ed. Beijing: Publishing House of Electronics Industry, 2016. (in Chinese)

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Related Institution

National & Local United Engineering Laboratory of Flat Panel Display Technology， College of Physics and Information Engineering， Fuzhou University

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