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:
Jul. 04, 2017
Filed:
Feb. 14, 2014
SK Hynix Inc., Icheon, KR;
Jung Sam Kim, Seoul, KR;
SK HYNIX INC., Icheon, KR;
Abstract
A semiconductor device includes a semiconductor substrate including a pad region and a peripheral region, a first buffer layer formed to include a capacitor over the semiconductor substrate in the pad region, a second buffer layer formed to include a first contact pad over the first buffer layer, and a third buffer layer formed to include a second contact pad over the first contact pad. The semiconductor device, by additionally forming a buffer layer at a lower part in the pad region, reduces a stress caused by wire bonding. Thus, an applied stress to a lower structure in the pad region is also reduced. As a result, the buffer layer prevents formation of an electrical bridge between the pad region and the peripheral region.