P‐31: New Pixel Circuit Using Constant Charging Current to Achieve High Driving Voltage for Blue‐Phase LCDs. Issue 1 (May 2017)

• Record Type: Journal Article
• Authors: Lin, Chih-Lung; Lai, Po-Cheng; Lai, Po-Chun; Hung, Chia-Che; Kuo, Chia-Wei; Lin, Ching-Huan
• Is Part Of: Digest of technical papers. Volume 48:Issue 1(2017)
• Page Start: 1343
• Page End: 1345
• Publication Date: 2017-05
• Subjects: Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.11888
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : This work proposes a novel pixel circuit based on amorphous indium‐gallium‐zinc‐oxide thin‐film transistors (a‐IGZO TFTs) for blue‐phase liquid crystal displays (BPLCDs) with the in‐plane switching (IPS) mode. The proposed pixel circuit provides a charging current as a constant current source to produce a wide operating voltage range for maximum transmittance of the BPLCs. Based on the simulation results, the proposed pixel circuit supplies a maximum output voltage of 30.14 V with an input voltage swing of 0 V to 9 V generated by the practical source driver integrated circuits (ICs), effectively compensating for the insufficient driving voltage of IPS BPLCDs.