A Dynamic Compensated and 95% High Efficiency Supply Buffer in RGB Virtual Pixel MicroLED Display for Reducing Ghosting by 73% and Achieving 4 Times Screen Resolution

Kai Cheng Chung, Jia Jyun Lee, Jia Rui Huang, Yan Jiun Lai, Ke-Horng Chen, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposed MicroLED virtual pixel array design and driver. The proposed virtual pixel array effectively increases the pixels per inch (PPI) and reduces parasitic capacitance for alleviating ghosting effects. The push-pull supply buffer in the proposed driver is compensated by the dynamic Miller compensation (DMC) technique to achieve fast transient response and reduce the ghosting by 50%-73%. Four times screen resolution can be obtained compared to conventional designs. 95% high efficiency microLED driver has the lowest 45W power consumption. The proposed supply buffer can drive microLEDs in 51 inch display panel which is composed of 214 small 96*64 microLED panels for automotive display.

Original languageAmerican English
Pages (from-to)8291 - 8299
Number of pages9
JournalIEEE Transactions on Power Electronics
DOIs
StateAccepted/In press - Jul 2020

Keywords

  • dynamic Miller compensation (DMC) technique
  • MicroLED
  • virtual pixel array and driver

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