In order to solve the problem of high voltage driving of nano-diamond coating field emission display, a driving circuit with gray-scale modulation and high-low voltage conversion is designed. Hardware circuits are based on assembled data driving chips of HV632PG and HV5308, which form the framework of gray-scale modulation and scanning display circuit; as well as, the framework of before and after low-level high-low voltage isolated and converted circuit is assembled based on half-bridge driving chip IR2235. Test the whole characteristics of software and hardware circuits, the dynamic display of simple image and character is realized on the screen of LED, which lays a certain foundation of theory and experiment for developing the application of nano-diamond coating FED of large screen.
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