Pen input to liquid crystal display

Details Pen input to liquid crystal display Pen input to liquid crystal display

1994-07-14

1997-03-11

Kuntz, Curtis

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345182, 345173, G09G 500

Patent

active

056106297

ABSTRACT:
A liquid crystal display comprises multiple capacitors which apply electric fields to liquid crystal material located between the capacitor plates. In the invention, each capacitor is associated with a sensor which detects the presence of a hand-held stylus. The detection can be done optically, acoustically, by pressure, by temperature, or by other means.

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