Research progress of Micro-LED display and its driving technology

CHINESE JOURNAL OF LIQUID CRYSTALS AND DISPLAYS(2022)

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摘要
Micro-LED (Micro-LED) display is a revolutionary and promising technology that has a significant impact on display technology. Micro-LED has high brightness,low power consumption,extended life, short response time,and good stability. It has good development potential in the display area and may be applied to virtual reality (VR), augmented reality (AR), mobile phone micro-displays, as well as household TV,conference wall,and other big and medium-sized displays. Although Micro-LED display has broad application prospects,its technology is still not mature,driving technology is facing high production costs,resource dispersion and other issues,limiting its industrialization process. This study examines the development process and research outcomes of Micro-LED display technology since 2000,analyzes array preparation and flip chip integration technology,and concentrates on the driving technology of Micro-LED displays. Micro-LED display driving technology is classified into two categories: passive driving and active driving. The circuit theory of passive driving,complementary metal oxide semiconductor driven by active driving,thin film transistor driving technology,and active pixel driving circuit are primarily introduced.
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关键词
Micro-LED,array fabrication,display,CMOS driver,TFT driver
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