Quote:
Originally Posted by HarryT
The capacitive touch screen is not so much a physical "layer" as a chemical coating on the screen
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What else is a chemical coating on the screen if not a physical layer?
Normally what they mean by 'transparent' is high optical transmission (~90%) as opposed to full optical transmission.
Here is
a nice article on different touch panel sensing methods from a display manufacturer. In particular see the summary at the end which rates the light transmittance of
capacitive panels at '
good' and
IR panels at '
excellent'.