Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPS62198279
Kind Code:
A
Abstract:
PURPOSE:To obtain a liquid crystal display device whose power consumption is low, and also, whose flicker is scarcely sensed, by impressing a signal whose phase is opposite to that of a signal impressed to a picture element of the second group, with respect to a signal impressed to a picture element of the first group which has been placed adjacently. CONSTITUTION:An amplitude of a video signal inputted to a video signal sample holding circuit 11 is divided into 1/2, signal electrodes and counter electrodes are divided into odd columns and even columns, and to the signal electrode of the odd column, a signal whose phase is opposite to that of a signal impressed to the signal electrode of the even column is impressed, and to the counter electrodes of the odd column and the even column, a square wave whose phase is opposite to that of the signal impressed to the respective signal electrodes is impressed. In this way, a power supply voltage of the video signal sample holding circuit 11, a noninverting circuit 13 and an inverting circuit 14 can be suppressed, and the power consumption is reduced remarkably.
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Inventors:
OTANI AKINARI
ADACHI KATSUMI
ADACHI KATSUMI
Application Number:
JP4122186A
Publication Date:
September 01, 1987
Filing Date:
February 26, 1986
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G02F1/1343; G02F1/133; G09F9/35; G09G3/20; H04N5/66; (IPC1-7): G02F1/133; G09F9/35; G09G3/20; H04N5/66
Domestic Patent References:
| JPS58172693A | 1983-10-11 | |||
| JPS57198491A | 1982-12-06 | |||
| JPS5854391A | 1983-03-31 |
Attorney, Agent or Firm:
Akira Kobiji (2 outside)