场致发射显示器新型图像驱动技术的研究  

Novel Image Driving Technology of Field Emission Display

作　　者：林志贤[1] 郭太良[1] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350002

出　　处：《液晶与显示》2009年第5期685-691,共7页Chinese Journal of Liquid Crystals and Displays

基　　金：国家"863"计划平板显示重大专项资助项目(No.2008AA03A313);福建省科技重大专项资助项目(No.2004HZ01-2);福建省科技三项经费资助项目(No.2006F5061);福建省教育厅资助项目(No.JA09003)

摘　　要：在分析和研究了原有灰度调制驱动电路以及低逸出功印刷型场致发射显示器(Field emission display,FED)的显示特性之后,提出了新型子行驱动图像还原技术。子行驱动技术能应用于不具备存储特性的显示器中,具有更小缓存容量需求和更高显示时间利用率等优点,更适合于场致发射显示器的驱动显示。详细介绍了新型图像驱动系统的工作原理及实现方案,同时为了解决子行驱动法对后级驱动芯片工作速度要求高的问题,在降低图像灰度数据位数的同时应用误差扩散法来实现真彩图像的还原。该技术已成功应用于FED驱动系统中并研制出彩色FED显示器样机。该样机能显示彩色视频图像,对角线为63.5cm(25in),亮度达300cd/m2,对比度为800∶1。By analyzing and studying the old gray scale modulation driving circuit and the characteristics of low work function printable field emission display（FED）, a novel image restoration sub-row driving（SRD） technology was put forward. SRD technology can be applied to the display panel which does not have storage characteristic. Less buffer memory demand and higher display time usage ratio and so on can be obtained so that it is more suitable for FED panels driving. The working principle of the new image driving system and the execution method were introduced in detail. In order to satisfy the demand of the chip driving high speed of the SRD method, some＇image data bits were reduced, while the application of error diffusion method was used to achieve true color image restoration. The technology had been successfully applied to FED driving system and developed a prototype color FED display. It can display color video images. Its diagonal is 63.5 cm（25 in）, brightness is 300 cd/m^2 and contrast ratio is 800：1.

关 键 词：场致发射显示器 灰度调制 子行驱动 

分 类 号：TN949.16[电子电信—信号与信息处理] TN941.3[电子电信—信息与通信工程]