Card with display function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 1, 2002
Grant Date -
N/A
app pub date -
Jun 21, 2000
filing date -
Oct 21, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An object of the invention is to provide a thin, low cost card with a display function in which the card display information is able to be rewritten within the card itself, without the use of an external rewriting apparatus. For this purpose, a card with a display function of the present invention comprises a data processing section and a display processing section, wherein the display processing section is equipped with a heating section and a thermosensitive section. By using a selection circuit, a plurality of heating elements of the heating section are heated selectively in accordance with stored data in a memory circuit. On sensing the thermal energy, the corresponding portions of the thermosensitive section undergo a variation in state, thereby displaying information corresponding to the stored data. Consequently, the rewriting of display information can be conducted automatically only within the body of the card itself.
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Family
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Cited Art Landscape
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