Electron focused ZnO field emission backlight unit

ZHAO Li-fang; DI Yun-song

doi:10.3788/YJYXS20153001.0064

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Electron focused ZnO field emission backlight unit

Device Physics & Device Technology | 更新时间：2020-08-12

- Electron focused ZnO field emission backlight unit
- Chinese Journal of Liquid Crystals and Displays Vol. 30, Issue 1, Pages: 64-69(2015)
- 作者机构：
  
  1. 南京信息职业技术学院, 江苏南京 210023
  2. 南京师范大学物理科学与技术学院, 江苏南京 210023
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20153001.0064
  CLC： O462.4
- Received：12 May 2014，
  
  Revised：17 June 2014，
  
  Published：05 February 2015
- 稿件说明：
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赵丽芳, 狄云松. 带电子聚焦的氧化锌场发射背光源[J]. 液晶与显示, 2015,30(1): 64-69

ZHAO Li-fang, DI Yun-song. Electron focused ZnO field emission backlight unit[J]. , 2015,30(1): 64-69
赵丽芳, 狄云松. 带电子聚焦的氧化锌场发射背光源[J]. 液晶与显示, 2015,30(1): 64-69 DOI： 10.3788/YJYXS20153001.0064.

ZHAO Li-fang, DI Yun-song. Electron focused ZnO field emission backlight unit[J]. , 2015,30(1): 64-69 DOI： 10.3788/YJYXS20153001.0064.

摘要

液晶显示需要低功耗、均匀度好的光源作为背光源.为了降低功耗

提高显示图像质量

未来的液晶显示需要实现对背光源进行时间与阵列调制.对比现有的液晶显示用背光源

研究制备了氧化锌场发射光源.该光源采用氧化锌纳米针作为场发射阴极

采用平面栅极作为门电极调制结构实现亮度的连续可调

通过带有氧化镁二次电子发射层的金属栅网对电子进行聚焦实现光源的均匀照度.实验结果表明

带电子聚焦的氧化锌场发射光源具有较低的开启场强(1.1 V/m)

较小的电压调制区间(小于150 V)

较高的发光强度(大于1 000 cd/m

)

且基于电子聚焦结构的设计

实现了光源的均匀稳定照度

可以提高液晶显示的图像质量.带电子聚焦结构的氧化锌场发射光源

既可实现对发光的时间与阵列调制

同时能提高发光的均匀性

将可作为液晶显示的理想背光源.

Abstract

Liquid Crystal Display requires low power consumption

good uniformity of light as a backlight. In order to reduce power consumption and improve the quality of the display image

the future of Liquid Crystal Display backlight needs to realize that time and array can be modulated. Compared with conventional Liquid Crystal Display backlight

zinc oxide field emission backlight has been researched. In this field emission backlight

zinc oxide nanostructure has been taken on as field emission cathode

a planar gate structure to achieve luminance modulation

a metal grid with magnesium secondary electron emitting layer as a focus electrode to achieve uniform illumination. The results showed that a zinc oxide field emission backlight with a focus electrode having a low turn-on field (1.1 V/m)

a relative small voltage modulation range (less than 150 V)

a high luminous intensity (greater than 1 000 cd/m

)

and the electron focusing structure design would achieve a uniform and stable illumination

which could improve the image quality of the liquid crystal display. With this zinc oxide electron focused field emission backlight

the light emission from backlight could be modulated by time and array independence

while the uniformity of light emission could also be improved

zinc oxide electron focused field emission backlight would be ideal as the LCD backlight.

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Keywords

references

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