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Patent Searching and Data


Title:
DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2009134055
Kind Code:
A
Abstract:

To provide a display device which can perform drive allowing an output buffer circuit of a video signal line drive circuit to have small circuit constitution, while employing a video signal line time-sharing drive system.

The periods when one set of six analog switches disposed in a liquid crystal panel are turned on (namely the HL periods of changeover control signals GSa to GSf) are so set as to have 1.1: 1,08:1.06:1.04:1.02:1 ratios. Thereby it is enough that the output buffer circuit of the video signal line drive circuit 300 has the driving capability necessary for charging a video signal line up to the desired potential within the shortest period (here, the H level period of the changeover control signal). Thereby, the chip size over the entire part of the video signal line drive circuit 300 is reduced, and a manufacturing cost and power consumption can be suppressed to a lower level.


Inventors:
SASAKI OSAMU
Application Number:
JP2007309841A
Publication Date:
June 18, 2009
Filing Date:
November 30, 2007
Export Citation:
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Assignee:
SHARP KK
International Classes:
G09G3/36; G02F1/133; G09G3/20
Attorney, Agent or Firm:
Akihiro Shimada