G - Physics
02
F
G02F 1/133 (2006.01) G09G 3/36 (2006.01)
Patent
CA 2143788
A display device is disclosed which includes a liquid crystal panel 1, a controller 2, a common driver 3 and a segment driver 4. The controller 2, as well as producing an orthonormal signal derived using a set of orthonormal functions, also produces a sum of product signals in accordance with a result of performing a sum of product calculations with a set of orthonormal functions and a set of pixel data. The common driver 3 applies a row driving waveform having a predetermined voltage level (+Vr, Vo, -Vr) to the row electrodes of the liquid crystal panel 1 by group sequential scanning at selected intervals in accordance with the orthonormal signals. The segment driver 4 applies a column driving waveform having a predetermined voltage level to the column electrodes of the liquid crystal panel 1 in synchronization with the group sequential scanning and in accordance with the sum of product signals. While the common driver 3 is supplied by a high voltage power supply (+VLC, -VLC) and outputs a relatively high voltage level row driving wave form, the segment driver 4 is supplied by a low voltage power supply (VDD, GND) and outputs a relatively low voltage level column driving wave form.
Fujita Hiroyuki
Hoshino Masafumi
Matsu Fujio
Oniwa Hirotomo
Yagi Kentaro
Borden Ladner Gervais Llp
Seiko Instruments Inc.
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