Touch panel structure for increasing active area

Details Touch panel structure for increasing active area Touch panel structure for increasing active area

2006-07-11

2006-07-11

Awad, Amr A. (Department: 2677)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S157000, C178S018050, C178S019010

Reexamination Certificate

active

07075522

ABSTRACT:
The present invention relates to a touch panel structure for increasing an active area of a touch panel. The touch panel structure comprises a resistive surface for constructing an inner portion of the panel taking the shape of a rectangle with four sides and four corners; a plurality of electrode segments arranged in a predetermined length and at a constant interval in the resistive surface adjacent to the four sides of the panel to be symmetric with each other disposed at corresponding positions; a plurality of compensation electrode segments arranged in a predetermined length and at a constant interval between the plurality of electrode segments and the sides of the panel to be symmetric with each other disposed at corresponding positions; and compensation patterns formed through connection of the electrode segments disposed at any side of the panel with the compensation electrode segments adjacent thereto. According to the present invention, it is possible to minimize the voltage gradient or voltage drop generated from the corners of the panel to the middle portions of the sides of the panel owing to the compensation electrode segments and the compensation patterns, thereby increasing an effective active area of the panel and securing linearity of equipotential lines in the panel.

REFERENCES:
patent: 4822957 (1989-04-01), Talmage, Jr. et al.
patent: 6549193 (2003-04-01), Huang et al.
patent: 6593916 (2003-07-01), Aroyan

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