LCD-cell with color and light filtering layers

US6762808B2 · kind B2 · utility

Assignee

• AEG Gesellschaft fuer moderne informationssysteme mbH · DE

Inventors

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

Key dates

• Filing date: May 28, 2002
• Grant date: Jul 13, 2004
• Expiry date: May 28, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/133567
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A liquid crystal display (LCD) cell is provided having transparent plates that are substantially parallel to each other and contain a liquid crystal display material. A plurality of spacers are interposed between the transparent plates to define a distance between the plates. At least one of the spacers exhibits dimensions and properties different than another of the spacers. The different dimensions and properties operate to control the distance at various temperatures to prevent non-uniform color effects and vacuum void formations.