Title :
Design of Bidirectional and Low Power Consumption Gate Driver in Amorphous Silicon Technology for TFT-LCD Application
Author :
Guang-Ting Zheng ; Po-Tsun Liu ; Meng-Chyi Wu ; Li-Wei Chu ; Meng-Chuan Yang
Author_Institution :
Dept. of Electron., Nat. Tsing-Hua Univ., Hsinchu, Taiwan
Abstract :
A new gate driver has been designed and fabricated by amorphous silicon (a-Si) technology. With utilizing four clock signals in the design of gate driver on array (GOA), the pull-up transistor has ability for both output charging and discharging, and layout size of the proposed gate driver can be narrowed for bezel panel application. Moreover, lower duty cycle of clock signals can decrease static power loss to further reduce the overall power consumption of the proposed gate driver. The scan direction of the proposed gate driver can be adjusted by switching two direct control signals to present the reversal display of image. The proposed gate driver has been successfully demonstrated in a 4.5-inch WVGA (480 × RGB × 800) TFT-LCD panel and passed reliability tests of the supporting foundry.
Keywords :
clocks; driver circuits; elemental semiconductors; liquid crystal displays; logic arrays; losses; power consumption; reliability; silicon; thin film transistors; GOA; Si; WVGA TFT-LCD panel; a-Si technology; amorphous silicon technology; bezel panel application; four clock signal; gate driver on array; image reversal display; power consumption gate driver; pull-up transistor; reliability test; size 4.5 inch; static power loss; Driver circuits; Logic gates; Low voltage; Power demand; Thin film transistors; Amorphous silicon (a-Si); gate driver; thin-film transistor liquid crystal display (TFT-LCD);
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2012.2225406
