Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-06-14
1996-03-12
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 87, 345103, G09G 336
Patent
active
054990378
ABSTRACT:
A liquid crystal display device has an arrangement of a plurality of pixel display regions each including a plurality of divided pixels, and is capable of effecting display with a large number of gray levels. Each of the divided pixels is displayed individually and selectively with at least two gray levels. The liquid crystal device further includes pixel electrodes for individually and selectively enabling the divided pixels, and a gray level setting circuit for controlling the sum of the areas of the enabled divided pixels, thereby setting the gray levels of the pixels. In this device, one pixel display region includes n divided pixels and if each pixel can be displayed with m gray levels, the areas of the pixels are set to form a geometric progression using m as a common ratio, whereby display with m.sup.n gray levels for one display region can be effected with high precision.
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"Conference Record of the 1988 International Display Research Conference" Oct. 4-6, 1988, pp. 111-113, Institute of Elec. and Electronics Engineers, Inc., SID, Advisory Gp. on Electron Dev.
Nakagawa Kenichi
Numao Takaji
Hjerpe Richard
Luu Matthew
Sharp Kabushiki Kaisha
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