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:
Aug. 22, 2000
Filed:
Mar. 23, 1999
Takashi Ohtsuka, Toyonaka, JP;
Tetsuo Kawakita, Tuzuku-gun, JP;
Kazuhiko Matsumura, Kadoma, JP;
Hiroaki Fujimoto, Hirakata, JP;
Abstract
A method of making semiconductor devices with contacts protruding from openings in a passivation layer over an active chip area. Inside each opening, a relatively hard barrier layer is provided and a flash-plated film is applied to subsequently form a relatively soft diffusion barrier layer when a protruding contact is formed. Two semiconductor devices with electrodes are joined by embedding relatively hard electrodes of a first device into relatively soft electrodes of a second device. A reducing agent can be incorporated into an insulating resin applied between semiconductor chips at areas other than the bonded electrodes.