Polychrome matrix screen without coupling between the rows and columns

US4737777A · kind A · utility

Assignee

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

Inventors

• Jean-Frederic Clerc · Yssingeaux, FR
• Stephane Renard · Le Pont-de-Claix, FR

Key dates

• Filing date: Aug 15, 1985
• Grant date: Apr 12, 1988
• Expiry date: Aug 15, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G3/3607
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Each image point X.sub.ij of the matrix screen is defined by the intersection between a control row i having at least one electrode and a control column j having an even number of electrodes. In order to eliminate the coupling between the rows and columns, the voltage signals applied to the electrodes of the same control column cancel one another out in groups of two.