Title :
An 8b Source Driver for 2.0 inch Full-Color Active-Matrix OLEDs Made with LTPS TFTs
Author :
Park, Yong-Sung ; Kim, Do-Youb ; Kim, Keum-Nam ; Matsueda, Yojiro ; Choi, Jong-Hyun ; Kang, Chul-Kyu ; Kim, Hye-Dong ; Chung, Ho Kyoon ; Oh-Kyong Kwon
Author_Institution :
Samsung SDI, Yongin
Abstract :
An 8b source driver for 2.0 inch QVGA active-matrix OLEDs is fabricated using LTPS TFTs. This driver uses an 8b DAC that is separated into two parts, a 1-to-3 DEMUX, and a pre-charge method. This scheme reduces the source driver size by 40%. The maximum DNL is under 1LSB. The output voltage variation of the source driver is less than 1 LSB even though the variation of the threshold voltage is plusmn0.5V
Keywords :
digital-analogue conversion; driver circuits; organic light emitting diodes; thin film transistors; 2 inch; 8 bit; DAC; DEMUX; LTPS TFT; full-color active-matrix OLED; pre-charge method; source driver; Active matrix organic light emitting diodes; Active matrix technology; Capacitors; Circuit simulation; Decoding; Displays; Organic light emitting diodes; Switches; Thin film transistors; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373622
