A Direct-Type Fast Feedback Current Driver for Medium-to Large-Size AMOLED Displays

Author

Jeon, Jin-Yong ; Jeon, Yong-Joon ; Son, Young-Suk ; Lee, Kwang-Chan ; Lee, Hyung-Min ; Jung, Seung-Chul ; Lee, Kang-Ho ; Cho, Gyu-Hyeong

Author_Institution

KAIST, Daejeon

fYear

2008

fDate

3-7 Feb. 2008

Firstpage

174

Lastpage

604

Abstract

The current or voltage driving schemes are employed for pulse-amplitude modulation (PAM) in AMOLED displays. Current driving methods have advantages over voltage driving schemes including improvement of luminance uniformity at display panels and compensation of TFT characteristics at pixels. degrade the driving accuracy. This paper introduces a direct-type fast feedback current (DFFC) driver that offers fast settling time with good accuracy by comparing the data with the pixel current directly. An optimum compensation method for the feedback loop is suggested as well.

Keywords

LED displays; brightness; driver circuits; organic light emitting diodes; pulse amplitude modulation; thin film transistors; TFT characteristics compensation; active matrix organic light emitting diode; direct-type fast feedback current driver; luminance; medium- to-large-sized AMOLED displays; pulse-amplitude modulation; voltage driving schemes; Active matrix organic light emitting diodes; Back; Bandwidth; Capacitors; Displays; Feedback loop; Frequency; Functional programming; Organic light emitting diodes; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2008. ISSCC 2008. Digest of Technical Papers. IEEE International

Conference_Location

San Francisco, CA

Print_ISBN

978-1-4244-2010-0

Electronic_ISBN

978-1-4244-2011-7

Type

conf

DOI

10.1109/ISSCC.2008.4523113

Filename

4523113