Title :
New high-voltage generator obtained some boosted voltages with large-output currents
Author :
Imai, Shigeki ; Sasaki, Naoto ; Suzuki, Yasoji ; Umeda, Kengo ; Nakanishi, Noboru
Author_Institution :
Syst. Solutions Planning Dept., Sharp Corp., Nara, Japan
Abstract :
To obtain boosted output voltage simultaneously with large output currents, such as 100 mA, a new high-voltage generator for a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) is proposed. The new proposed generator is constituted of charge-pumping circuits to generate positive and negative high-voltages. The total power efficiency, ηT, is a good value of about 70%, in comparison with the conventional one of around 10%, when the new generator produces +5V/-5V output voltages with +100mA/-100mA output currents from a +3V single power supply voltage.
Keywords :
DC-DC power convertors; driver circuits; liquid crystal displays; thin film transistors; -100 mA; -5 V; 100 mA; 3 V; 5 V; TFT-LCD; amorphous silicon thin film transistor liquid crystal display; boosted voltage; charge-pumping circuits; display driver circuits; high-voltage generator; large-output currents; power efficiency; Charge pumps; Clocks; Driver circuits; Electronic components; Power generation; Power supplies; Pulse generation; Thin film circuits; Thin film transistors; Voltage;
Conference_Titel :
Communications and Information Technology, 2004. ISCIT 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8593-4
DOI :
10.1109/ISCIT.2004.1412462
