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Patent Searching and Data


Title:
LIQUID CRYSTAL DRIVING DEVICE
Document Type and Number:
Japanese Patent JPH0816134
Kind Code:
A
Abstract:

PURPOSE: To provide a liq. crystal driving device appropriately displaying and driving the white-balance of color liq. crystal.

CONSTITUTION: A signal side driving circuit 1 selects properly a driving voltage V1 and a driving voltage V3 according to display data and a scanning inverting signal to supply it as a display driving signal to respective signal lines SR1, SG1, SB1. At this time, the timing of a driving circuit RC for an R signal is performed by being synchronized with a latch signal L, the timing of a driving circuit GC for a G signal is performed by being synchronized with a display timing signal PG and the timing of a driving circuit BC for a B signal is performed by being synchronized with a display timing signal PB. Thus, the white-balance is appropriately adjusted by adjusting impressing timings of display driving signals of G and B while making R in which the value of (an effective voltage V rms - a transmissivity T) is smallest as a reference and by making transmissivities Ts of R, G, B equal while adjusting effective voltages Vs rms OF R, G, B.


Inventors:
YAMAGISHI KOJI
Application Number:
JP16600294A
Publication Date:
January 19, 1996
Filing Date:
June 24, 1994
Export Citation:
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Assignee:
CASIO COMPUTER CO LTD
International Classes:
G02F1/133; G09G3/36; H04N5/66; H04N9/73; (IPC1-7): G09G3/36; G02F1/133; H04N5/66; H04N9/73