Japan Search
menu:Corporate Infomenu:Investor Relationsmenu:Social & Environmental Activitiesmenu:Press Releases
Corporate Info
Corporate Overview
Business Philosophy & Business Creed
Charter of Corp.Behavior
A Sharp Journey
Technical Journal
Sharp Bases in Japan Showrooms

Technical Journal No.4 (April 2003)
Special Papers 1 Fundamental Technologies for Liquid Crystal Displays
Technology of the GRP Formula for Wide-Viewing-Angle LCDs

Motohiro YamaharaIichiro InoueTakako NakaiShigeaki Mizushima

This paper describes one of the wide-viewing-angle technologies for thin-film-transistor liquid-crystal-displays (TFT-LCDs), Gradual Refraction Polarizer (GRP) formula especially for a twisted nematic liquid crystal display (TN-LCD). This formula uses optical compensation films with an inclined optical indicatrix. The optical characteristics of the entire compensation film composed of a hybrid aligned discotic compound layer on a triacetylcellulose (TAC) substrate were identified as uniaxial negative birefringence whose optical axis was inclined from the normal direction. We determined that the optical parameters of combination of the discotic layer and the substrate as a whole govern the viewing characteristics of TN-LCDs using GRP films.

You can look at PDF file(664KB)

To the Top of "Technical Journal No.4"

Page Top