基于CPLD的Si基液晶芯片显示驱动  

Liquid Crystal on Silicon Display Driver Based on CPLD

作　　者：黄苒[1] 王文博[1] 王晓慧[1] 杜寰[1] 韩郑生[1] 

机构地区：[1]中国科学院微电子研究所

出　　处：《半导体技术》2008年第10期913-916,共4页Semiconductor Technology

基　　金：国家"973"资助项目(2003CB314705)

摘　　要：以复杂可编程逻辑器件(CPLD)作为QVGA微显示视频核心控制单元,搭建LCOS微显示芯片驱动系统。通过对CPLD编程产生与微显示芯片相匹配的控制信号与显示数据信号,实现对显示芯片的驱动控制,向微显示芯片输入16帧顺序16级灰度电压测试信号以测试像素的灰度响应。测试结果表明电压灰度响应正确,通过控制行列坐标的方式产生测试图像,驱动微显示芯片显示出测试图像,验证了LCOS微显示芯片显示功能的正确性,显示效果良好,视频刷新频率可达到60 Hz。A liquid crystal on silicon （LCOS） microdisplay QVGA driver was buih using CPLD as central control unit. Drive and control of LCOS chip were implemented by programming the CPLD to generate control signals and video data signals matching with microdisplay chip. The pixel grayscale response of microdisplay chip was tested by inputting 16 frame sequentait 16 gray-levels signal. The result shows that gray-levels are correct. Generate test video data by control row and col coordinates, the function of the LCOS microdisplay chip is validated by inputting test video data. The refresh rate of the LCOS chip can reach 60 Hz.

关 键 词：硅基液晶 微显示 控制电路 复杂可编逻辑器件 

分 类 号：TN873.92[电子电信—信息与通信工程] TN402