Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-07-09
1997-04-01
Wu, Xiao
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, 345208, G09G 336
Patent
active
056171110
ABSTRACT:
In a driving circuit for a multiple gray scale liquid crystal device, the least significant half of a given image data is decoded by a sub decoder, and one interpolating voltage is selected from a plurality of interpolating voltages by a sub switch circuit in accordance with the decoded result, so that the selected interpolating voltage Vc is applied across a capacitor. Next, the most significant half of the given image data is decoded by a main decoder, and one main voltage is selected from a plurality of main voltages by a main switch circuit in accordance with the decoded result, so that the selected main voltage Vk is supplied to one terminal of the capacitor. With this, a voltage V.sub.CH at the other terminal of the capacitor becomes {Vc+Vk}. Accordingly, by selecting Vc and Vk, it is possible to generate a number of output driving voltages corresponding to a number of gray scale levels, with a reduced number of external voltage supplies and with a reduced cost.
REFERENCES:
patent: 5122792 (1992-06-01), Stewart
K. Hyugaji et al., "CMOS Driver LSIs for Megapixel Multi-Color TFT-LCDs"; SID 91 Digest, vol. 27, No. 4, pp. 543-546.
NEC Corporation
Wu Xiao
LandOfFree
Circuit for driving liquid crystal device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for driving liquid crystal device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for driving liquid crystal device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-543047