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:
May. 29, 2001
Filed:
Nov. 13, 1998
Applicant:
Inventors:
Paul R. Moehle, Seekonk, MA (US);
Harold T. Kelleher, Attleboro, MA (US);
Gijsbert Willem Lokhorst, Enter, NL;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C 5/00 ;
U.S. Cl.
CPC ...
G03C 5/00 ;
Abstract
The invention is a method for making a lead frame (,) having fine pitched lead frame leads (,). A first side of the lead frame material is etched to for the lead frame and define the lead frame leads and die pad, but the etch process does not etch completely through the lead frame material. The partially etched first side is then covered with a tape (,) or layer of photoresist (,). The second side of the lead fame material is then etched to complete the lead frame. The lead frame may then be plated.