A novel driving scheme for high-resolution large-area a-Si:H AMOLED displays

Author

Chaji, G.Reza ; Nathan, Arokia

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

fYear

2005

fDate

7-10 Aug. 2005

Firstpage

782

Abstract

Organic (polymeric) light-emitting diode (OLED) displays have demonstrated promising features such as high-resolution, potentially low-cost, and wide-viewing angle. More importantly, the OLED requires a small current to emit light along with a very low operating voltage (3-10 V), leading to a very power efficient devices. The programming time of high-resolution active matrix organic light emitting diode (AMOLED) displays is 20 μs. However, the settling time of the conventional AMOLED driving schemes is of the order of ms. This paper presents a novel high-speed driving scheme for different pixel circuits based on hydrogenated amorphous silicon (a-Si:H) technology. The programming time of the new driving scheme is under 20 μs, which is adequate for high-resolution, large-area AMOLED displays such as XVGA (1024×768).

Keywords

LED displays; amorphous semiconductors; organic light emitting diodes; silicon; thin film transistors; 20 mus; 3 to 10 V; XVGA; a-Si:H technology; active matrix organic light emitting diode; high-resolution large-area AMOLED display; high-speed driving scheme; hydrogenated amorphous silicon; operating voltage; power efficient device; programming time; thin film transistors; Active matrix organic light emitting diodes; Circuits; Computer displays; Flat panel displays; Liquid crystal displays; Organic light emitting diodes; Parasitic capacitance; Switches; Thin film transistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. 48th Midwest Symposium on

Print_ISBN

0-7803-9197-7

Type

conf

DOI

10.1109/MWSCAS.2005.1594217

Filename

1594217