Electroluminescent displays

US8704975B2 · kind B2 · utility

Assignee

• Mflex UK Limited · GB

Inventors

• Yong Zhao · 红钢城街道, CN
• Christopher M. Evans · Houston, US

Key dates

• Filing date: Sep 28, 2010
• Grant date: Apr 22, 2014
• Expiry date: Sep 2, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2201/50
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electroluminescent display comprising a mask defining the information to be displayed and an electroluminescent (EL) backlight. The mask compress a layer (13) of physically-stabilized liquid crystal switchable to define the information to be displayed mounted in front of an EL layer (16) of the backlight. At least one pair of electrodes (12, 20) are arranged to generate, in use, an electric field across both the EL layer (16) and the LC layer (13). A barrier layer (15) is provided between the LC layer (13) and the EL layer (16) that restricts migration of liquid crystal from the LC layer (13) to the EL layer (16).