Vertically Aligned In-Plane-Switching LCD Mode With Novel Pixel Circuits

Author

Tien-Lun Ting ; Cho-Yan Chen ; Sau-Wen Tsao ; Mei-Ju Lu ; Yen-Ying Kung ; Wen-Hao Hsu ; Jenn-Jia Su

Author_Institution

VS Technol. Dev. Div. I, AU Optronics Corp., Hsinchu, Taiwan

Volume

9

Issue

10

fYear

2013

fDate

Oct. 2013

Firstpage

832

Lastpage

839

Abstract

In this paper, we propose two novel pixel circuits which are able to provide great picture quality at oblique viewing angles. These two pixel circuits are based upon the VA-IPS mode with vertically aligned nematic liquid crystals and in-plane switching electrodes. Comparing to current VA-type LCDs, the VA-IPS mode can be used to improve oblique gamma distortion with its tone rendering distortion index (TRDI) as low as 0.15. With the proposed pixel circuits, we believe the TRDI can be further improved to be less than 0.13. The novel technologies are very likely to be the solution for VA-type LCDs when facing the competition from other display technologies.

Keywords

liquid crystal displays; nematic liquid crystals; LCD Mode; TRDI; VA-IPS mode; in-plane switching electrodes; oblique gamma distortion; oblique viewing angles; picture quality; pixel circuits; tone rendering distortion index; vertically aligned in-plane-switching; vertically aligned nematic liquid crystals; Anisotropic magnetoresistance; Azimuth; Color; Electrodes; Equivalent circuits; Liquid crystals; Threshold voltage; Charge-shared; VA-IPS; color washout; gamma distortion; tone rendering distortion index (TRDI);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2013.2262259

Filename

6517544