H - Electricity – 01 – L
Patent
H - Electricity
01
L
H01L 21/26 (2006.01) H01L 21/71 (2006.01) H01L 21/768 (2006.01)
Patent
CA 2250795
A method for creating via holes in a chip or a plurality of chips of a wafer is disclosed. The method is performed by using a pre-patterned transparent mask on the back of the chip, and bombarding the chip(s) through the positioning holes of the transparent mask corresponding to the pre-formed pattern with accelerated particles. According to this method, via holes can be created from the back of the chip(s) without interfering with the existent IC structure of the chip(s). The present method is highly efficient because a number of via holes can be formed simultaneously by using a large pre-patterned mask to cover the entire wafer. In addition, the present method is cost-effective because no precision apparatus is required.
Cheng Shiang Ching
Chou Chin-Yi
Mou Tse-Chi
Yang Arnold Chang-Mou
Mbm Intellectual Property Law Llp
Microjet Technology Co. Ltd.
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