05777596 is referenced by 179 patents and cites 20 patents.

The present invention relates to a touch sensitive LCD flat panel display. The display allows a user to provide input into a computer device by simply touching an LCD display screen with a passive device, such as a finger, stylus, or a ball point pen. The invention includes circuitry which continuously compares the charge times of the liquid crystal elements of the display to a reference value and uses the results of the comparison to determine which elements in the display are currently being touched.

Title
Touch sensitive flat panel display
Application Number
8/556689
Publication Number
5777596
Application Date
November 13, 1995
Publication Date
July 7, 1998
Inventor
Brian K Herbert
Colorado Springs
CO, US
Agent
Wayne P Bailey
Assignee
Symbios
CO, US
IPC
G02F 1/133
View Original Source