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夜视兼容的LED液晶显示器背光模组的研究

Study on Night Vision Compatible Backlight Module of LED Liquid Crystal Display

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摘要

为了提高夜视兼容的液晶显示器(LCD)显示屏的显示效果, 在使用红绿蓝三色LED为背光源的基础上, 增加了红外LED, 将不同的LED搭配成在不同模式下使用的两套光源。根据10.4 in(1 in=2.54 cm)背光源的亮度和均匀性的要求, 将背光源当作朗伯发光体来计算亮度, 以便于选择LED的类型, 确定LED的数量和排列方式, 合理选择光学膜片及设计背光模组的结构。由于红外LED的发光功率可调节, 在夜视兼容模式下, 不仅可以通过夜视仪看清LCD显示屏上的信息, 而且用裸眼也可以轻易看清显示屏上的信息。通过TracePro软件进行仿真并分析, 结果发现设计的背光模组同时满足了LCD显示屏的强光下可视和夜视兼容两项要求。

Abstract

In order to improve the effect of night vision compatible liquid crystal display (LCD), infrared LED is used on top of the RGB three-color LED as the backlight source, and different LEDs are arranged to form two sets of light sources at different modes. According to the brightness and uniformity requirements of the 10.4 in (1 in=2.54 cm) backlight source, backlight is used as a Lambert luminous body to select the type of LED by calculation, to determine the number and arrangement of LED, to select the optical films reasonably, and to design the structure of the backlight module. Because the luminous power of infrared LED is adjustable, in night vision compatible mode, the information can be seen on the LCD screen not only through night vision device but also with naked eyes. Simulation and analysis by TracePro software show that the designed backlight module meets the two requirements of the LCD screen of visible features under the bright light and night vision compatibility.

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中图分类号:TN219

DOI:10.3788/lop54.091203

所属栏目:仪器,测量与计量

基金项目:安徽省科技攻关项目(1301022058)、安徽省教育厅质量工程项目(2015gxk011)

收稿日期:2017-04-10

修改稿日期:2017-05-08

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作者单位    点击查看

朱向冰:安徽师范大学物理与电子信息学院, 安徽 芜湖 241000
崔海田:安徽师范大学物理与电子信息学院, 安徽 芜湖 241000
钱立勇:安徽师范大学物理与电子信息学院, 安徽 芜湖 241000
王元航:安徽师范大学物理与电子信息学院, 安徽 芜湖 241000

联系人作者:朱向冰(13855312793@126.com)

备注:朱向冰(1973-), 男, 博士, 教授, 主要从事照明与显示方面的研究。

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引用该论文

Zhu Xiangbing,Cui Haitian,Qian Liyong,Wang Yuanhang. Study on Night Vision Compatible Backlight Module of LED Liquid Crystal Display[J]. Laser & Optoelectronics Progress, 2017, 54(9): 091203

朱向冰,崔海田,钱立勇,王元航. 夜视兼容的LED液晶显示器背光模组的研究[J]. 激光与光电子学进展, 2017, 54(9): 091203

被引情况

【1】杨超普,方文卿,刘明宝,李 春,张美丽,周春生. 不同色温LED背光屏的蓝光危害和非视觉生物效应. 激光与光电子学进展, 2017, 54(10): 101701--1

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