Apparatus exhibiting PTC behavior useful for displaying informat

Details Apparatus exhibiting PTC behavior useful for displaying informat Apparatus exhibiting PTC behavior useful for displaying informat

1987-11-12

1990-05-01

Brigance, Gerald

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340713, 340756, 350351, G09G 304

Patent

active

049222422

ABSTRACT:
An apparatus for displaying information comprising a resistive element, preferably a conductive polymer resistive element, adjacent to a thermochromic layer. When electrically powered, the resistive element heats the thermochromic layer above a transistion point causing the thermochromic layer to change from opaque to transparent. The resistive element exhibits PTC behavior and, therefore, does not overheat. The apparatus may be large in size and on a flexible substrate.

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