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Patent Searching and Data


Title:
DISPLAY DEVICE AND PORTABLE APPLIANCE USING THE SAME
Document Type and Number:
Japanese Patent JP2005140957
Kind Code:
A
Abstract:

To refresh a display content of each pixel with a refresh cycle balancing with information holding time of a liquid crystal display element, further to immediately change the display content when pixel information is changed and at the same time, to reduce a burden of control for refresh control in a liquid crystal display device using the liquid crystal display element with long information holding time.

In the liquid crystal display device using the liquid crystal display element with long information holding time, a plurality of m types of refresh cycles, formed by segmentizing a refresh time period Tref into m pieces, are installed. For the liquid crystal display element to which picture information is written with a change control means, refresh controls from the next time onward are carried out with the refresh cycle of which the starting time is just before write time point of the picture information with a refresh control means.


Inventors:
NAIKI TAKASHI
Application Number:
JP2003376721A
Publication Date:
June 02, 2005
Filing Date:
November 06, 2003
Export Citation:
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Assignee:
ROHM CO LTD
International Classes:
G02F1/133; G09G3/20; G09G3/36; (IPC1-7): G02F1/133; G09G3/20; G09G3/36
Attorney, Agent or Firm:
Makoto Monda
Terumi Hemi