G - Physics – 09 – G
Patent
G - Physics
09
G
375/39
G09G 3/36 (2006.01) G02F 1/133 (2006.01) G09G 3/20 (2006.01)
Patent
CA 1202131
ABSTRACT OF THE DISCLOSURE CONTROL DEVICE FOR A DISPLAY SCREEN AND DISPLAY SCREEN CONTROLLED BY THIS DEVICE The invention relates to planar display screens and more particularly to smectic liquid crystal screens. One of the problems of high definition display screens (approximately 100 to 1000 lines and columns) is caused by the devices for controlling the heating current on the lines. The complexity of the installation and costs limit the increase in the definition. The invention arranges the N lines of a screen into Image groups of lines supplied at each of their ends by Image control devices functioning sequentially, i.e. 2 Image devices in all. Moreover, each line has a diode placed between the heating resistor and the common point of the circuit. Application to the display of images transmitted in the form of a video signal for television and display peripheral equipment in teletransmission. Fig 3.
392134
Hareng Michel
Hehlen Robert
Le Berre Serge
Leclerc Pierre
Marcenac Philippe
Goudreau Gage Dubuc
Thomson-Csf
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