高灰度级tftlcd显示系统的实现_大学生毕业设计（论文）.doc

摘要 随着社会的进步，人们更多的关注于显示系统的高清晰度、高灰度级和高还原度The Study and Design of high gray-scale display System Based On TFT-LCD Abstract With the progress of society,people pay more attention to high definition, high grayscale display systems. TFT - LCD display system based on improved grey scale all areas has become an important part, plays very important research significance. In this paper ,we analyze some traditional gray modulation method such as ?traditional voltage amplitude, pulse width modulation and the analysis of the factors of improvement of TFT - LCD display system, using hybrid variety of traditional gray modulation method is presented to increase the TFT - LCD display grayscale method, focuses on the dynamic jitter in the mixed gray modulation processing, and presents a hybrid algorithm for calculating grayscale modulation of the FPGA implementation scheme. In this paper ,we proposed and studied a kind of time and space on a mix of gray modulation TFT - LCD display platform. In the design of the whole TFT - LCD structure and mixed gray modulation principle, on the basis of the experiment adopted series of ALTERA company Cyclone FPGA as the core controller, with the Quartus II software for FPGA design platform, using the top-down FPGA design method, designed with the FPGA as the core of TFT - LCD display system.?Combined with the mixed gray modulation principle, developed on the basis of AD9984A VGA data collection, AD conversion module, digital image preprocessing module, FIFO control module, an LVDS control module and the main functional modules, such as mixing gray modulation algorithm realizing the collection of the analog image signal VGA, modulus conversion, storage, and mixed gray modulation, improves the resolution of the image as well as system integration and stability. Finally, the paper set up the hardware platform of the whole system, test and verify on the TFT - LCD system. From comprehensive and simulation results of FPGA and TFT - LCD display