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:
Feb. 01, 2000
Filed:
Jan. 05, 1995
Applicant:
Inventors:
William K Dennis, Garland, TX (US);
Masood Murtuza, Sugarland, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257690 ; 257666 ; 257668 ; 257669 ; 257671 ;
Abstract
A semiconductor package (80) is provided that serves to support a semiconductor chip (12). A radial slot (54) is formed in an inner ring (26). Cross-slots (64) and (66) are formed in a corner member (38) of polyimide film (22). The slots (54), (64) and (66) serve to allow independent expansion of various portions of the polyimide film (22) and prevent breakage of contact leads (14), (16), (18) and (20) due to the differences in the thermal coefficient of expansion of the semiconductor material and the polyimide film material.