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:
Mar. 02, 2021
Filed:
Dec. 28, 2017
Lbsemicon Co., Ltd., Gyeonggi-do, KR;
Jin Kuk Lee, Gyeonggi-do, KR;
LBSEMICON CO., LTD., Gyeonggi-Do, KR;
Abstract
Provided is a method of manufacturing a bump structure, the method including a first step for preparing a wafer including a plurality of chips each including a die pad, an under bump metal (UBM) layer on the die pad, and a bump pattern on the UBM layer, a second step for attaching a backgrinding film to an upper surface of the wafer, a third step for grinding a rear surface of the wafer by a certain thickness, a fourth step for forming a flexible material layer on a second rear surface of the wafer after being ground, and then attaching dicing tape including a ring frame, to the flexible material layer, a fifth step for removing the backgrinding film and then performing a curing process to harden the flexible material layer, and a sixth step for performing a dicing process to cut the plurality of chips into individual chips.