基于SOPC的通用液晶触摸屏控制器的设计  

Control Unit Design for TFT Touching Screen Based on SOPC

作　　者：张传胜[1] 郑寒雨[2] 邓江东[3] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,中国长春130033 [2]北京理工大学信息与电子学院,北京100081 [3]长春理工大学计算机科学与技术学院,吉林长春130022

出　　处：《液晶与显示》2012年第5期638-641,共4页Chinese Journal of Liquid Crystals and Displays

摘　　要：介绍了基于现场可编程逻辑门阵列(FPGA)的TFT液晶触摸屏控制器的设计方法。利用FPGA构建软核处理器(NiosⅡ),并依据TFT液晶屏和芯片ADS7843的接口时序设计驱动电路,利用内嵌到NiosⅡ处理器中的程序可以自动校正TFT液晶屏和触摸屏的对应点,实践表明,利用SOPC技术实现的TFT液晶触摸屏控制器具有触摸响应速度快,触点相应准确的优点,能有效兼容市面上各种规格的液晶屏,具有良好的实用性和社会价值。A design method for control unit of the TFT touching screen based on FPGA is described in this paper.Using a NiosⅡ processer built by FPGA,the corresponding point on the TFT and touching screens can be corrected automatically according to the programs in processer and the driver circuit between TFT screen and the ADS7843 chip.It is indicated that the control unit of the TFT touching screen based on SOPC technique has the advantages of quick response and exact touching,which can be compatible with all kinds of TFT touching screen,and it has good practicability and social value.

关 键 词：现场可编程逻辑门阵列 ADS7843 触摸屏 

分 类 号：TN27[电子电信—物理电子学]