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Session
71
: Micro Display Driving for AR/MR |
Display Electronics
|
Thursday, May 16 / 01:30 PM - 2:30 PM / San Jose Convention Center, LL20BC
Chair:
Soo-Yeon Lee, Seoul National University , Seoul, South Korea
Co-Chair:
Jacob (Minhyuk) Choi, Meta, Menlo Park, CA US
71.1 - CMOS Backplane Technology and Its Challenge for mLEDoS AR/XR Display (1:30 PM - 1:50 PM)
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Myunghee Lee, Jewoo Seong, Jinwoong Jang, Jiehaeng Lee, Jonggu Jeon
Sapien Semiconductors Inc. Seongnam South Korea
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This paper presents a CMOS backplane technology for Micro-LED on Silicon AR/XR display Engines with 1,280RGB x 720 resolution. This backplane is implemented on 28nm Fully Depleted Silicon on Insulator CMOS process and achieves over 5,000 PPI in RGB mode. Each pixel has 3-sub pixel drivers and one dependent driver for red LED. The backplane also includes imaging processing functions such as de-Miura compensation, dead pixel compensation, digitial gamma generation and more. The top surface of the wafer is prepared for wafer-to-wafer hybridization bonding between the CMOS and LED wafers.
71.2 - 4,670ppi OLEDoS Pixel Circuit Design for Wide Data Voltage Range in a 5V 0.13um CMOS Process (1:50 PM - 2:10 PM)
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Yong-Duck Kim
Electronics and Telecommunications Research Institute Daejeon South Korea
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Hyeon-Jun Shin, San Kim, Byong-Deok Choi
Hanyang University Seoul South Korea
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This paper proposes a pixel circuit design method for 4,670ppi micro-OLED-on-silicon displays that expands the data voltage range while maintaining luminance uniformity. The challenge of designing data driver circuits to divide the narrow voltage range into 1,024 levels is addressed. The proposed method is verified through measurements on 40 x 120 pixel arrays fabricated in a 5V 0/.13um CMOS process.
71.3 - High-Resolution Pixel Circuit Using a Double-Gate LTPS TFT for AMOLED Displays in AR and VR Applications (2:10 PM - 2:30 PM)
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Jae-Young Heo, Hwarim Im, Kook Chul Moon, Yong-Sang Kim
Sungkyunkwan University Suwon South Korea
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The new AMOLED pixel circuit for high-resolution applications such as AR/VR has been proposed. The simultaneous emission is adopted to minimize pixel elements. The proposed circuit can compensate for variations of threshold voltage and sub-threshold voltage, even composed with three TFTs and one capacitor.