一种LVDS接口的液晶显示驱动设计
发布时间:2018-03-30 18:48
本文选题:现场可编程门阵列 切入点:第二代双倍数据率 出处:《河南科技大学学报(自然科学版)》2017年05期
【摘要】:为了解决目前嵌入式液晶显示技术中存在的显示驱动支持分辨率低、数据更新慢及控制灵活性差等问题,设计了一种基于现场可编程门阵列(FPGA)的LVDS接口的液晶显示驱动。对数据缓存技术中数据读写控制等关键问题进行了分析,研究了对液晶显示驱动时序和低电压差分信号(LVDS)传输时序。基于FPGA构建缓存控制模块和显示控制模块,实现数据快速更新及LVDS接口液晶显示屏的显示。通过QuartusⅡ软件,对缓存控制模块控制时序进行了采样分析验证。验证结果表明:第二代双倍数据率同步动态随机存取存储器(DDR2 SDRAM)在166 MHz下工作,LVDS接口液晶显示屏分辨率为1 024 pixel×768 pixel,位宽为16 bit时,数据更新率达82 MHz,且控制灵活,能够满足目前对液晶显示驱动的需求。
[Abstract]:In order to solve the problems existing in embedded liquid crystal display technology, such as low resolution of display driver support, slow data updating and poor control flexibility, etc. A liquid crystal display driver based on FPGA (Field Programmable Gate Array) LVDS interface is designed. The key problems such as data reading and writing control in data buffer technology are analyzed. This paper studies the timing of liquid crystal display drive and low voltage differential signal transfer. The buffer control module and display control module are constructed based on FPGA to realize the fast data updating and the display of LVDS interface liquid crystal display screen. Through Quartus 鈪,
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