Color liquid crystal display device

US7595851B2 · kind B2 · utility

Assignee

• AEG Gesellschaft fuer moderne informationssysteme mbH · DE

Inventors

• Reiner Bayrle · Langenau, DE
• Thomas Bitter · Bad Ditzenbach, DE
• Otto Bader · Warthausen, DE

Key dates

• Filing date: Apr 13, 2007
• Grant date: Sep 29, 2009
• Expiry date: Mar 28, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2203/34
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A liquid crystal display (LCD) is disclosed including a first cholesteric liquid crystal (LC) layer between a first and second substrate containing a plurality of adjacent alternately arranged pixels of a first and second primary color. A second cholesteric LC layer between the second substrate and a third substrate contains a plurality of adjacent alternately arranged pixels of the first and a third primary color. The first primary color pixels in the first and second LC layer, and the second primary color pixels in the first LC layer and the primary color pixels of the third primary color in the second LC layer, are arranged behind one another. Two first primary color pixels in the first and second LC layer interact with an adjacent second primary color pixel in the first LC layer and an adjacent third primary color pixel in the second LC layer for representing a display pixel.