侧入式局域动态调光背光聚光特性研究

尹慧娟; 王培娜; 吴波; 吴春明; 孙文波; 施祖传

doi:10.3788/YJYXS20183311.0905

您当前的位置：

首页 >

文章列表页 >

侧入式局域动态调光背光聚光特性研究

材料与器件 | 更新时间：2020-08-12

- 侧入式局域动态调光背光聚光特性研究
- Spotlight characteristics of local dynamic dimming for side-lit backlight
- 液晶与显示 2018年33卷第11期页码：905-910
- 作者机构：
  
  安徽省背光源工程技术研究中心, 安徽省平板显示LED背光源工程研究中心, 合肥市背光源工程技术研究中心, 合肥京东方显示光源有限公司, 安徽合肥 230012
- 作者简介：
  
  [ "尹慧娟(1989-), 女, 河南济源人, 硕士, 工程师, 主要从事LED背光及相关显示技术研究。E-mail:yinhuijuan@boe.com.cn" ]
- 基金信息：
  
  安徽省科技攻关计划(1501021043);Science and Technology Major Project of Anhui Province(1501021043)
- DOI：10.3788/YJYXS20183311.0905
  中图分类号： TN27
- 收稿日期：2018-05-04，
  
  录用日期：2018-7-14，
  
  纸质出版日期：2018-11-05
- 稿件说明：
移动端阅览
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.

Hui-juan YIN, Pei-na WANG, Bo WU, 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.
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. DOI： 10.3788/YJYXS20183311.0905.

Hui-juan YIN, Pei-na WANG, Bo WU, 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. DOI： 10.3788/YJYXS20183311.0905.

摘要

针对HDR技术在侧入式局域动态调光中的特殊要求，采用结构导光板搭配LED灯条进行聚光，以此提高背光对比度，实现液晶显示器的分区动态调光控制。首先，基于现有导光板出光面亮度分布，确定了导光板出光面微结构为锯齿形，然后利用光线追迹法对结构导光板进行仿真，分析了不同结构的导光板出光面微结构棱高、棱宽比和曲率对聚光性能的影响，结果表明，聚光性与导光板出光面结构直接相关，光学胶折射率为1.49，棱高为20

m，棱宽比为0.47时，聚光性能最佳；根据仿真结果开发了实际背光产品，并对此产品进行了测试，测试结果表明，与传统的导光板相比，使用结构导光板后，背光聚光效果显著，对比度由6.01提升到127.15，满足动态调光聚光性要求。

Abstract

For the special requirements of the high dynamic range local dynamic dimming in the side-lit backlight

this paper proposed the structural light guide plate matching the LED light bars to spotlight

improving the backlight contrast and realizing the divisional dimming control of the liquid crystal display. First

based on the surface brightness distribution of the existing light guide plate

the microstructure surface of the light guide plate was designed as a zigzag shape. In order to analyze the influence of the height

width and curvature of the microstructure on the light-emitting surface of the light guide plate with different structures

the ray tracing method was used to simulate the structure of the light guide plate. The simulation results show that the light concentrating property is related to the light-emitting surface structure of the light guide plate. When the refractive index of the optical adhesive is 1.49

the height is 20

and a ratio of the height to the width is 0.47

the light collection effect is the best. On the basis of the design

a sample was produced and measured. The practical measurement results show that using structure light guide plate

the contrast ratio turns from 6.01 to 6.01 as compared with the common light guide plate. These results satisfy the requirements of local dynamic dimming.

关键词

Keywords

references

惠慧, 朱颖瑛, 朱林林, 等. HDR技术及标准发展情况[J].电视技术, 2016, 40(3):75-78.

HUI H, ZHU Y Y, ZHU L L, et al . Development and standardization of high dynamic range technology[J]. Reception and Display , 2016, 40(3):75-78. (in Chinese)

王金华. 高动态范围场景可视化技术研究[D]. 北京: 北京交通大学, 2010. http://cdmd.cnki.com.cn/article/cdmd-10004-2010115568.htm

WANG J H. Research on high dynamic range scenes visualization[D]. Beijing: Beijing Jiaotong University, 2010. (in Chinese)

BAE S W, YOON G W, YOON J B. Ultra-thin edge type single sheet backlight unit for seamless two-dimensional local dimming[J]. SID Symposium Digest of Technical Papers , 2016, 47(1):1406-1408.

李冰. 侧光式液晶电视区域动态控制功能的算法研究与硬件实现[D]. 青岛: 中国海洋大学, 2013. http://cdmd.cnki.com.cn/Article/CDMD-10423-1013368751.htm

LI B. Algorithm research and hardware implementation of area dynamic control of edge-lit LCD TV[D]. Qingdao: Ocean University of China, 2013. (in Chinese)

刘芬, 吕国强, 张喜条, 等.侧入式发光二极管背光区域调光算法[J].光电工程, 2015, 42(4):81-87.

LIU F, LÜ G Q, ZHANG X T, et al . A local dimming algorithm for edge-lit lighting emitting diode backlight[J]. Opto - Electronic Engineering , 2015, 42(4):81-87. (in Chinese)

CHO H, KWON O H. A local dimming algorithm for low power LCD TVs using edge-type LED backlight[J]. IEEE Transactions on Consumer Electronics , 2010, 56(4):2054-2060.

PYO D, JUNG T, JANG D, et al . Active local dimming system for low power and motion blur enhancement[J]. SID Symposium Digest of Technical Papers, 2011, 42(1):1433-1435.

ANGGOROSESAR A, KIM Y J. Object-based local dimming for LCD systems with LED BLUs[C]// Proceedings of IEEE/ACM International Symposium on Low Power Electronics and Design. Fukuoka, Japan: IEEE, 2011: 315-320.

JUNG S, KIM M, KIM D, et al . Local dimming design and optimization for edge-type LED backlight unit[J]. SID Symposium Digest of Technical Papers , 2011, 42(1):1430-1432.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据