Low-power TFT-LCD source driver using triple charge sharing method

Author

Sung, Yoo-Chang ; Choi, Byong-Deok ; Kwon, Oh-Kyong

Author_Institution

Div. of Electron. & Electr. Eng., Hanyang Univ., Seoul, South Korea

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

317

Lastpage

320

Abstract

A low-power source driver for TFT-LCDs has been proposed using triple charge sharing method that enhances the power saving efficiency of the previous charge sharing method. While the efficiency of the previous method is limited to only 50%, the proposed method provides about two-thirds of the total voltage swing of the source line by charge sharing between neighboring source lines and one external capacitor, thus achieving the power saving efficiency up to 66.6%. The additional circuits for this method are very simple, so that the area penalty is negligible. It has been confirmed by SPICE simulation that this method can be applied to 30-inch TFT-LCD with UXGA resolution

Keywords

SPICE; driver circuits; liquid crystal displays; low-power electronics; thin film transistors; 30 inch; SPICE simulation; UXGA resolution; low-power TFT-LCD source driver; power saving efficiency; triple charge sharing method; Capacitance; Capacitors; Circuit simulation; Driver circuits; Electronic mail; Power supplies; SPICE; Switches; Video sharing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI and CAD, 1999. ICVC '99. 6th International Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-5727-2

Type

conf

DOI

10.1109/ICVC.1999.820918

Filename

820918