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An Active Matrix Micro-Pixelated LED Display Driver for High Luminance Uniformity Using Resistance Mismatch Compensation Method

Title
An Active Matrix Micro-Pixelated LED Display Driver for High Luminance Uniformity Using Resistance Mismatch Compensation Method
Author
권오경
Keywords
Active matrix; micro-LED; current uniformity; luminance uniformity; micro-IC; fast switching
Issue Date
2018-06
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v. 65, no. 6, page. 724-728
Abstract
This brief proposes an active matrix micro-pixelated light-emitting diode (AMLED) display driver to achieve a high luminance uniformity. The proposed AMLED display driver enhances the forward current uniformity of micro-LEDs by compensating for resistance mismatch between the micro-pixel circuits. The proposed AMLED display driver ICs were fabricated using a standard 0.18-mu m CMOS process with 6-V high voltage devices. They were assembled with a micro-LED array having a resolution of 16 x 16 x RGB and measured to verify the luminance uniformity of the AMLED display. The measured average deviation of the micro-LED forward current over all 768 pixels was 0.91% with an average current of 12.03 mu A, indicating that the proposed display driver achieved highly uniform luminance. Therefore, the proposed AMLED display driver is suitable for high-end display applications, offering high image quality.
URI
https://ieeexplore.ieee.org/document/8249533http://repository.hanyang.ac.kr/handle/20.500.11754/119134
ISSN
1549-7747; 1558-3791
DOI
10.1109/TCSII.2018.2790412
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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