The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2021
Filed:
Jul. 14, 2017
Eternal Materials Co., Ltd., Kaohsiung, TW;
Chung-Kai Cheng, Kaohsiung, TW;
Chung-Jen Wu, Kaohsiung, TW;
Meng-Yen Chou, Kaohsiung, TW;
Chang-Hong Ho, Kaohsiung, TW;
Po-Yu Huang, Kaohsiung, TW;
Shun-Jen Chiang, Kaohsiung, TW;
ETERNAL MATERIALS CO., LTD., Kaohsiung, TW;
Abstract
The present invention relates to a method for preparing a patterned polyimide coverlay on a substrate. The method includes: providing a polyimide dry film including a carrier and a non-photosensitive polyimide layer on the carrier, the non-photosensitive polyimide layer containing (i) a polyimide precursor or soluble polyimide and (ii) a solvent; forming a predetermined pattern in the polyimide dry film; laminating the patterned polyimide dry film onto a substrate in such a manner that the non-photosensitive polyimide layer faces the substrate; and forming a patterned polyimide coverlay by heating.