The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1990
Filed:
Apr. 18, 1989
Tuomo S Suntola, Espoo, FI;
Oy Lohja Ab, Virkkala, FI;
Abstract
Described herein are a method for generating electronically controllable color elements and a color display based on the method, comprising a light gate matrix (9), and a light source system with a set of primary color sources (6, 7, 8) for the primary colors (R, G, B), and control circuits (1 . . . 4) for controlling the transmission of light gates in the light gate matrix (9) for a level corresponding to the intensity of the respective primary color in the composite color spectrum of the displayed picture element. In accordance with the invention, the primary color is generated by pulsing the primary color sources and using only one light gate per picture element for controlling the primary color intensities at the picture element. The present invention facilitates, among other things, perfect color convergence, improved light transmission efficiency, and simpler production technology for transmission type color displays, due to single light gate construction of the controlled light gate matrix (FIGS. 1a and 1b).