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:
Jun. 05, 2012
Filed:
Apr. 08, 2010
Heui-gyun Ahn, Yecheon-gun, KR;
Heui-Gyun Ahn, Yecheon-gun, KR;
Siliconfile Technologies Inc., Seoul, KR;
Abstract
A unit pixel of an image sensor having a three-dimensional structure includes a first chip and a second chip which are stacked, one of the first chip and the second chip having a photodiode, and the other of the first chip and the second chip having a circuit for receiving information from the photodiode and outputting received information. The first chip includes a first pad which is projectedly disposed on an upper surface of the first chip in such a way as to define a concavo-convex structure, and the second chip includes a second pad which is depressedly disposed on an upper surface of the second chip in such a way as to define a concavo-convex structure corresponding to the concavo-convex structure of the first chip. The first chip and the second chip are mated with each other through bonding of the first pad and the second pad.