摘要
介绍了一种基于ARM9的彩色薄膜晶体管液晶显示模块(TFT-LCD)的设计和实现方法。为了解决图像及字符在液晶模块上的实时显示,图像库及字符库存储在容量达64Mbyte的NAND Flash闪存中,可以根据不同需求对图像库及字符库进行更新。模块支持24bit彩色RGB格式图像的显示,还支持JPEG格式图像的显示,JPEG图像的解码功能在ARM9处理器上实现。模块采用串口方式与其他外接主控系统通信,通过接收主控系统的不同指令,可以实现对库中图像及字符显示的实时更改。在液晶屏LQ080V3DG01上已通过测试,运行可靠。该模块已实际应用于图像显示设备中。
This paper presents the design and implementation of a chromatic TFT-LCD module based on ARM9 processor.To resolve the real-time display,the image and character library is stored in the NAND Flash memory,and the memory capacity is 64Mbytes.Depending on different requirements,the image and character library can be updated.The 24bit color image of raw pixel can be displayed on the LCD directly.The image decoding for the JPEG format is presented,so the image of JPEG format can also be displayed.The module communicates with control system using the serial port.Receiving different kind of instructions,image and character in the flash memory can be displayed respectively.The module was tested on the TFT-LCD LQ080V3DG01,and the result shows that the module works reliably.The module has been applied to the image display system.
出处
《液晶与显示》
CAS
CSCD
北大核心
2010年第5期718-723,共6页
Chinese Journal of Liquid Crystals and Displays
