Liquid crystal display device with tablet

Details Liquid crystal display device with tablet Liquid crystal display device with tablet

1996-04-18

1999-07-27

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345173, 178 1806, 178 181, G09G 336

Patent

active

059298340

ABSTRACT:
A liquid crystal display device with a tablet reduced in apparatus thickness and enhanced in display visibility. The liquid crystal display device mainly composed of a liquid crystal display upper glass plate, a liquid crystal, and a liquid crystal display lower glass plate is connected with a tablet on the upper glass plate, the tablet being mainly composed of a film having a first transparent electrode. A second transparent electrode arranged on the upper glass plate is made function as both an electrostatic capacity detecting electrode and a display electrode. Namely, display is made by the second transparent electrode and a third transparent electrode and a coordinate on the tablet is detected by the first transparent electrode and the second transparent electrode.

REFERENCES:
patent: 4723836 (1988-02-01), Kono et al.
patent: 4789858 (1988-12-01), Fergason et al.
patent: 5430462 (1995-07-01), Katagiri et al.
patent: 5623280 (1997-04-01), Akins et al.
patent: 5852487 (1998-12-01), Fujimori et al.

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