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. 11, 2008
Filed:
Dec. 05, 2005
Wen-kun Yang, Hsin-Chu, TW;
Jui-hsien Chang, Hsinchu, TW;
Wen-Kun Yang, Hsin-Chu, TW;
Jui-Hsien Chang, Hsinchu, TW;
Advanced Chip Engineering Technology Inc., Hsinchu County, TW;
Abstract
The present invention provides a separating process of a semiconductor device package of wafer level package. The method comprises a step of etching a substrate to form recesses. Then a buffer layer is formed on the first surface of the substrate, wherein the buffer layer is filled with the corresponding recesses to form infillings on adjacent the semiconductor device package. Dicing the wafer into individual package along substantial center of said infillings, the step may avoid the roughness on the edge of each die and also decrease the cost of the separating process.