Ta-i Technology Co., Ltd.

Hung-Yi Chuang

Ho-Chieh Yu

Chun-You Lin

Tsai-Pao Chiang

Jiun-You Lin

The present invention relates to a chip-type protection device having an enclosed micro-gap between electrodes. The invention includes a substrate on which a pair of discharge electrodes extend towards each other by a micro-gap. A wall is disposed in a manner spaced apart from the micro-gaps by a predetermined distance, on which a cover portion is mounted in a straddling manner across the micro-gaps. The wall and the cover portion are integrated under a predetermined gaseous environment to form a hermectic chamber on which an outer protective layer is coated. End electrodes are subsequently formed on the substrate in a manner connected to conductive portions of the discharge electrodes. The invention provides a protection device against over-voltage.

Chip-type protection device having enclosed micro-gap between electrodes

Disclosed is a chip scale gas discharge protective device whose metal coupled electrodes are fabricated through processes of yellow light, image formation, and electro casting of metal electrode, and the two electrodes are facing each other in arch lines with the distance of a gap controlled within the range of 0.5&#x2dc;10 &#x3bc;m, wherein the entire structure is performed by a bridge process without an extra gas filling procedure in the gap. Due to the fact that the gap is as small as only several &#x3bc;m, a relevant potential difference existing across there is sufficient to ionize the air thereby suppressing the electro-static discharge (ESD) through the protected electronic device, whereas the fabrication method is disclosed.

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Tao-Yuan Hsien, Taiwan

Hung-Yi Chuang