Capacitive touch panel

Details Capacitive touch panel Capacitive touch panel

2007-07-17

2007-07-17

Lee, Richard K. (Department: 2832)

Electricity: circuit makers and breakers

Capacitive switch

C345S173000, C341S022000, C349S012000

Reexamination Certificate

active

11402247

ABSTRACT:
The present invention discloses a capacitive touch panel, which comprises: an insulation substrate; an electrically-conductive layer, installed on the insulation substrate; and multiple electrically-conductive segments, installed on the perimeter of the electrically-conductive layer. The present invention improves the distribution characteristics of the electric field neighboring the frame of a touch panel via providing at least one chamfer for one end of each electrically-conductive segment. Thereby, the distribution of the electric field lines neighboring the frame can be smooth and uniform. Thus, the accuracy and the usable area of the touch panel are promoted.

REFERENCES:
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patent: 4822957 (1989-04-01), Talmage, Jr. et al.
patent: 5846110 (1998-12-01), Kanagu et al.
patent: 6265682 (2001-07-01), Lee
patent: 6677542 (2004-01-01), Katakami
patent: 6781579 (2004-08-01), Huang et al.
patent: 6894682 (2005-05-01), Nakajima et al.
patent: 6963040 (2005-11-01), Urman

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