Matrix display device

US4449125A · kind A · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Jean-Frederic Clerc · Yssingeaux, FR
• Jacques Robert · Le Mont-sur-Lausanne, CH

Key dates

• Filing date: Dec 31, 1981
• Grant date: May 15, 1984
• Expiry date: Dec 31, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/134336
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A matrix display device having two groups of row electrodes and a process for the control thereof. This device is constituted by two insulating walls made from a material having several zones distributed in matrix-like manner, a first group of p rows of parallel electrodes covering one of the walls and a second group of q columns of parallel electrodes covering the other wall. A zone x.sub.i y.sub.j is defined by the overlap of row x.sub.i and column y.sub.j in which i varies from l to p and j from l to q. The said device also comprises a third group of p rows of electrodes, identical to the first group and placed on the second group, while being electrically insulated from the latter by an insulating layer.