Research On Reinforced OLED DrivingTechnology And FPGA Implementation

With the rapid development of electronic technology, the birth of new and hightechnology weaponry and its application, display technology system plays more and moreimportant role in military. Cathode Ray Tube (CRT) mainly used in military early has beensubstituted by flat panel display since its huge volume, high power consumption and poorelectromagnetic compatibility. In a number of flat panel display technology, LCD (LiquidCrystal Display) is the mainstream of military application. But there are many problemsexists in LCDs for military applications: LCD materials will be instable in low-temperatureand the extra heating device will lead to high power consumption and long start-up time;the efficiency of LCDs are low (<10%), requiring backlight units provding higherluminance and therefore increasing power consumption. OLED (Organic Light-EmittingDiode) is better: its materials are solid (means strong earthquake), self-luminous (meanshigh efficiency light source), lower power consumption and normally working in lowtemperature(<0℃). However, to make OLED technology apply in the military display,military reinforcement must be carried out. Combining with the LCD militaryreinforcement technology, this thesis discusses military OLED reinforcement methods,emphasizes on the study of driving technology during the OLED reinforcement methods,and study the FPGA drive technology for4.3inch OLED. The main research is as follows:(1)Research on the OLED reinforcement methods. Using LCD reinforcementtechnology as reference, combining with OLED characteristics, this thesis discusses theOLED reinforcement methods. And put forward the FPGA drive scheme as reinforcementcircuit design which is the most important one of the reinforcement methods.(2)Study the principle of driving scheme using FPGA for4.3inch OLED.(3)Focus on the algorithm of4.3inch OLED driving system based on FPGA.Study theinterpolation algorithm, color space transformation algorithm and video scaling algorithm,and put forward a kind of improved bilinear interpolation algorithm for FPGAimplementation. For video scaling algorithm, analysis and compare simulation results ofvarious algorithms, and theoretically concluded that the improved bilinear interpolationalgorithm is better for system hardware realization(4)Study FPGA implementation of various driving algorithm.Discuss the logicimplementation of the various driving algorithm and implement based on FPGA.Eventually implemente OLED video display, and samely implemente the other two video scaling algorithm in order to compare the result. Further validate that the improved bilinearinterpolation algorithm is a kind of practical and good video scaling algorithm.