Capacitance detection type sensor and manufacturing method...

Details Capacitance detection type sensor and manufacturing method... Capacitance detection type sensor and manufacturing method...

2008-04-29

2008-04-29

Mulpuri, Savitri (Department: 2812)

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

C438S622000

Reexamination Certificate

active

07364931

ABSTRACT:
Capacitance sensor electrodes are arranged in a form of matrix on a semiconductor substrate and coated with a cover film. These capacitance sensor electrodes are connected to a drive circuit. ESD electrodes are arranged in the vicinities of corner portions of the capacitance sensor electrodes. Each ESD electrode is composed of a film containing, for example, aluminum excellent in conductivity and a TiN film formed thereon. The ESD electrodes are grounded through the semiconductor substrate. On each ESD electrode, a plurality of fine ESD holes reaching the ESD electrode from a surface of the cover film are formed.

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