Title:
NON-CONTACT IC CARD AND ELECTROLYTE MATERIAL FOR DISPLAY
Document Type and Number:
Japanese Patent JP2000322549
Kind Code:
A
Abstract:
To provide an IC card which performs a display function with small power and also can maintain its display for a long time.
An IC 2 is fixed onto a substrate 1. A working electrode 5 for display, a counter electrode 6, power supply terminals 2A for the IC 2 and lead wires 3 connecting these electrodes are formed on the substrate 1 by screen printing. A mixture of a high polymer electrolyte gel and an electrometric material having a triphenylmethane structure is formed in a film shape so as to cover the electrodes 5 and 6 to obtain a display element 4. The color of element 4 is changed by small power supplied from the IC 2 to perform display. Even though power supply is stopped, the display can be maintained for a long time.
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Inventors:
MATSUMOTO SHIRO
SAKATA SEIZO
HAYASHI TAKAYOSHI
SAKATA SEIZO
HAYASHI TAKAYOSHI
Application Number:
JP13248399A
Publication Date:
November 24, 2000
Filing Date:
May 13, 1999
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G06K19/077; G06K19/07; (IPC1-7): G06K19/077; G06K19/07
Attorney, Agent or Firm:
Junnosuke Nakamura (2 outside)