Title:
DRIVE DEVICE
Document Type and Number:
Japanese Patent JP3195230
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a drive device capable of remarkably reducing the power consumption, obtaining a high quality image without unevenness and a flicker in the image and reducing the cost and substrate area.
SOLUTION: When a common electrode is AC-driven to a reference potential, and a data electrode is driven inverting positive/negative polarity to the potential of the common electrode for an active matrix liquid crystal display body, the common electrode is separated from a common electrode drive circuit by a switch SWcom at the point of time changing the positive/negative polarity, and a specified gradation source line path LIVO is separated on the way by the switch SWvO. Further, the position a little to an output side from the part separated by the switch SWvO of the gradation source line path LIVO is connected to a terminal outputting the output voltage Vcom by the switch SWs. At this time, the drive device connects the data electrode with the common electrode through a turned on analog switch. etc., in the state separated from the outside power source, and charges charged on respective electrodes are neutralized.
More Like This:
Inventors:
Mikio Hashimoto
Tadashi Eto
Hisao Okada
Tadashi Eto
Hisao Okada
Application Number:
JP7077896A
Publication Date:
August 06, 2001
Filing Date:
March 26, 1996
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G02F1/133; G09G3/36; (IPC1-7): G02F1/133; G09G3/36
Domestic Patent References:
| JP4216593A | ||||
| JP8251518A |
Attorney, Agent or Firm:
Shusaku Yamamoto