Title :
On-panel output buffer with offset compensation technique for data driver in LTPS technology
Author :
Ker, Ming-Dou ; Deng, Chih-Kang ; Huang, Ju-Lin
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu
fDate :
6/1/2006 12:00:00 AM
Abstract :
To overcome the offset voltage (VOS) of output buffer due to large variation on characteristics of thin-film transistor (TFT) in low-temperature polysilicon (LTPS) technology, a class-B output buffer with offset compensation circuit for the data driver is presented in this paper. This proposed class-B output buffer can operate at 50-kHz operation frequency with a 2-8-V output swing for extended graphic array (XGA) application, and it has been demonstrated in 3-mum LTPS technology. Using the offset compensation technique, the VOS of output buffer can be controlled within plusmn100 mV under 2-to-8 V signal operation to achieve a high resolution and quality liquid crystal display (LCD) panel
Keywords :
liquid crystal displays; polymers; thin film transistors; 50 kHz; LTPS technology; data driver; extended graphic array; liquid crystal display; low temperature polysilicon; offset compensation; operation frequency; output buffer; thin film transistor; Active matrix liquid crystal displays; CMOS technology; Driver circuits; Frequency; Graphics; Liquid crystal displays; Signal resolution; Silicon; Thin film transistors; Voltage; Low-temperature polycrystalline silicon (LTPS); offset compensation; output buffer; thin-film transistor (TFT);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2006.874510
