Liquid crystal display with touch sensing using variable...

Details Liquid crystal display with touch sensing using variable... Liquid crystal display with touch sensing using variable...

2005-07-26

2010-06-22

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S175000, C178S018060, C178S018090

Reexamination Certificate

active

07742041

ABSTRACT:
A liquid crystal display includes a first panel, a second panel facing the first panel and spaced apart from the first panel, a liquid crystal layer disposed between the first panel and the second panel, a variable capacitor having a capacitance that varies by a touch and generating a control voltage that has a magnitude depending on the capacitance, and a sensing element disposed on the second panel and generating a sensing signal based on the control voltage.

REFERENCES:
patent: 7009663 (2006-03-01), Abileah et al.
patent: 7154481 (2006-12-01), Cross et al.
patent: 7280167 (2007-10-01), Choi et al.
patent: 1193768 (1998-09-01), None
patent: 1315669 (2001-10-01), None
patent: 2004053576 (2004-06-01), None

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