Novel Dual-Coupling Pixel Circuit to Achieve High Transmittance of Blue-Phase Liquid Crystal

Author

Chih-Lung Lin ; Chun-Da Tu ; Mao-Hsun Cheng ; Chia-Che Hung ; Ching-Huan Lin ; Sugiura, Norio

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

36

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

354

Lastpage

356

Abstract

A new pixel circuit for in-plane switching blue-phase liquid crystal displays (IPS BPLCDs) is developed. The dual-coupling method enables the proposed circuit to generate twice the maximum output voltage of source driver integrated circuits (ICs) for the BPLC with a simple structure, so the achievable transmittance is about four times that of the BPLC that is simply driven using practical source driver ICs. A 10.1-in prototype IPS BPLC panel (720 × 360) and simulation results demonstrate the feasibility of the proposed circuit for practical BPLCD applications, and the tone rendering distortion index is as low as 0.11.

Keywords

colour displays; driver circuits; liquid crystal displays; IPS BPLCD; dual-coupling pixel circuit; in-plane switching blue-phase liquid crystal display; size 10.1 in; source driver IC; source driver integrated circuit; tone rendering distortion index; Capacitors; Couplings; Electrodes; Liquid crystal displays; Prototypes; System-on-chip; Thin film transistors; Blue-phase mode; liquid crystal; panel; pixel circuit;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2015.2404973

Filename

7046342