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:
Oct. 09, 2001
Filed:
Jul. 20, 1998
Toshiyuki Tsujii, Tokyo, JP;
Mitsubishi Denki & Kabushiki Kaisha, Tokyo, JP;
Abstract
A film carrier includes a base film (,), a first interconnect line (,) formed on the top surface of the base film (,) and connected to test pads (,), and a second interconnect line (,) formed on the bottom surface of the base film (,) and connected to the test pads (,). After leads (,) are plated, connecting portions between the first interconnect line (,) and other than one of the test pads which is associated with a pad which is to receive a power supply potential, and connecting portions between the second interconnect line (,) and other than one of the test pads which is associated with a pad which is to receive a ground potential are severed using a laser and the like. Then, the film carrier is wound onto a reel, and the reel with the film carrier wound thereon is loaded into a burn-in apparatus. A potential supply portion of the burn-in apparatus applies the power supply potential to the first interconnect line (,) and applies the ground potential to the second interconnect line (,). The film carrier and a method of burn-in testing eliminate the need for a burn-in board and a socket and reduce the time for preparation for burn-in.