基于动态比较的硅基OLED微显示器接口设计

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Design of interface circuitry for silicon-based OLED microdisplays employing dynamic comparison technique

WANG Jie¹， JI Yuan 1，2* ， JIN Zhongbei¹， ZHANG Yin²，LIU Xingyan （1. Microelectronic Research & Development Center， Shanghai University， Shanghai 2O0444， China; 2. School ofMechatronic Engineering and Automation，Shanghai University，Shanghai 2OO44，China

Abstract： To address the excessive data volume issue in digitally-driven silicon-based OLED（Organic Light Emiting Diode） microdisplays under high resolution， high grayscale，and high refresh rate conditions， this study proposes a low-power dynamic-comparison interface circuit for 2k×2k microdisplays. Currently，low-power interfaces predominantlyemploy high-speed low-voltage differential signaling （LVDS）transmission schemes，where the analog comparators in the receiver end exhibit significant static power consumption. The proposed circuit employs dynamic comparison techniques for receiving both data and control signals，effectively reducing overall power consumption. Experimental results based on 110nm process demonstrate that the receiver achieves correct data acquisition at 1.2V operating voltage with 100mV input signal swing and 1.25 GHz operating frequency. Notably，the single-channel dynamic comparison receiver consumes only 160.7μW ，representing a 29.4% reduction compared to conventional receiver circuits，while the total system power consumption is merely .This dynamiccomparison interface circuit provides an innovative design solution for future digital driving circuits with increasingly demanding requirements，ofering significant improvements in power effciency without compromising performance.

Key Words： silicon-based OLED；microdisplay; dynamic-comparison interface; low-power

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