Driver Research And Application On OLED Display Device

With the rapid development of modern technology,display technology has also developed fast in recent decades.Now in information society,displays,as an important medium for information display,play an important role in all walks of life.From the development of the first generation of cathode ray tubes to the second generation of liquid crystal displays,now gradually transition to third-generation display technology.Among them,the most advantageous display technology is organic light-emitting diode(OLED).Due to its various advantages,a large number of laboratories and companies all over the world are developing OLED display technology.At present,the development of OLED is relatively mature in many fields and widely used.Based on the Jinglun Smart Campus Student Card project,Nordic nRF52832 chip and Truly OEL9M1026-W-E are the basis for research and implementation of the OLED display driver and application of embedded systems.Firstly,the key technologies of OLED are analyzed.According to the characteristics of two different driving modes of OLED,the appropriate equipment is selected.The overall structure of student card system and OLED module is introduced.On this basis,the design and implementation of OLED module are analyzed and explained.The role of the OLED module and other modules in the student card system and the interaction and connection between them;secondly,the basic principle of the OLED display module and the functions to be provided are analyzed,and different communication buses are compared and selected.Based on this,SPI communication is utilized.The protocol designs and implements the driving of the OLED display,and designs various display interfaces through SPI data transmission,including displaying English characters,Chinese characters,pictures and so on,in order to support the display interface of various applications of student cards.Finally,in order to provide a better display function,the function of adding word spacing,line spacing,vertical and horizontal scrolling is designed and implemented.