Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-09-18
1998-09-29
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 99, G09G 336
Patent
active
058151338
ABSTRACT:
A display apparatus includes a display panel having a matrix structure formed by a scan electrode group and a data electrode group, a scan electrode drive unit for operating the scan electrode group, a data electrode drive unit for operating the data electrode group, and a switching unit for switching on/off the electrical connection between a drive voltage generating unit for supplying drive voltage to the drive unit and a power supply source for supplying power to the drive voltage generating unit. Also included is a detection unit for detecting that the switching unit has been switched off, and a control unit for controlling the scan electrode drive unit and data electrode drive unit to apply a display drive signal for causing the display panel to display a desired image according to image information when the switching unit is switched on and to apply, to the scan electrode group and the data electrode group, non-pixel portion control voltage signals for controlling the optical state of liquid crystal in non-pixel portions which are regions except for intersection portions between the scan electrode group and the data electrode group immediately after or after the switching unit has been switched off.
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Iwayama Mitsuo
Katakura Kazunori
Tsuboyama Akira
Yokomizo Hiroyuki
Canon Kabushiki Kaisha
Kovalick Vincent F.
Saras Steven J.
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