Title:
ICカード
Document Type and Number:
Japanese Patent JP4245173
Kind Code:
B2
Abstract:
In an IC card, cholesteric liquid crystal layers (631 and 632) reflecting red light and a cholesteric liquid crystal layer (633) reflecting blue light, in a planar state, are laminated, and a voltage is respectively applied to the laminated cholesteric liquid crystal layers (631 to 633), to change an oriented state of the cholesteric liquid crystals between the planar state and a focal conic state, so as to transmit or reflect light, thereby displaying predetermined information. Furthermore, visibility can be improved by changing a display color according to the displayed information, thereby further improving the convenience of the IC card.
Inventors:
Masaki Nose
Junji Tomita
Shinkai Tomohisa
Fumio Yamagishi
Kenzo Nishide
Shigeru Hashimoto
Yoshiyasu Sugimura
Kabe Yabe
Futoshi Sumino
Takahiro Hirano
Junji Tomita
Shinkai Tomohisa
Fumio Yamagishi
Kenzo Nishide
Shigeru Hashimoto
Yoshiyasu Sugimura
Kabe Yabe
Futoshi Sumino
Takahiro Hirano
Application Number:
JP2005508784A
Publication Date:
March 25, 2009
Filing Date:
September 04, 2003
Export Citation:
Assignee:
富士通株式会社
富士通フロンテック株式会社
富士通フロンテック株式会社
International Classes:
G06K19/077; B42D15/10; G02F1/13; G02F1/133; G02F1/1335; G02F1/1347; G02F1/137; G06K19/07; G09G3/18
Domestic Patent References:
| JP2002234200A | ||||
| JP2003208582A | ||||
| JP2002202525A | ||||
| JP11091271A | ||||
| JP2002099886A | ||||
| JP2003241168A | ||||
| JP2002042071A |
Foreign References:
| WO2003050604A1 |
Attorney, Agent or Firm:
Hiroaki Sakai