SYMMETRIC TOUCH SCREEN SYSTEM WITH CARBON NANOTUBE-BASED TRANSPARENT CONDUCTIVE ELECTRODE PAIRS
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Feb 20, 2008
filing date -
Feb 21, 2007
priority date (Note) -
Abandoned
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Abstract
A symmetric touch screen switch system in which both the touch side and panelside transparent electrodes are comprised of carbon nanotube thin films is provided. The fabrication of various carbon nanotube enabled components and the assembly of a working prototype touch switch using those components is described. Various embodiments provide for a larger range of resistance and optical transparency for the both the electrodes, higher flexibility due to the excellent mechanical properties of carbon nanotubes. Certain embodiments of the symmetric, CNT-CNT touch switch achieve excellent optical transparency (<3% absorption loss due to CNT films) and a robust touch switching characteristics in an electrical test.
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