A 10-Bit 1280 × 720 Micro-LED Display Driver With 2-Transistor Pixel Circuits and Current-Mode Pulse Width Modulation

Pei Yi Lai Lee, Sheng Hui Li, Tzu Yi Hung, Ya Wen Yang, Sih Han Li, Jian Jhih Sun, Chih Wei David Lin, Chih Wen Lu*, Yen Hsiang Fang, Wei Hung Kuo, Li Chun Huang, Guo Dung John Su, Poki Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study proposes a 1280 $\times $ 720 micro-LED display driver with 10-bit current-mode pulse width modulation. A two-transistor pixel circuit and a precharge scheme are proposed. A 1280 $\times $ 720 micro-LED display driver with 3969 pixels per inch was fabricated using standard 0.18- $\mu \text{m}$ CMOS technology. The measured maximal DNL and INL values were 0.33 and 1 LSB, respectively. A 1280 $\times $ 720 common-cathode micro-LED array was bonded on the display driver chip; hence, the feasibility of the display driver was verified. The display was successfully lit up at a 90-Hz frame rate and a power consumption of 76.3 mW.

Original languageEnglish
Pages (from-to)134-137
Number of pages4
JournalIEEE Solid-State Circuits Letters
Volume5
DOIs
StatePublished - 2022

Keywords

  • Micro-LED display
  • micro-LED display driver
  • pulse width modulation

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