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:
Mar. 01, 2005
Filed:
May. 10, 2004
Applicant:
Tz-cheng Chiu, Plano, TX (US);
Inventor:
Tz-Cheng Chiu, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L021/44 ; H01L023/12 ;
U.S. Cl.
CPC ...
Abstract
A composite lid for a semiconductor package, in which the lid includes at least two materials. The first material is disposed over and attached to the back surface of the die with a low-modulus thermal gel, and the second material is disposed towards the perimeter of the lid. The second material has a modulus of elasticity greater than the modulus of elasticity of the first material, and preferable, at least twice that of the first material.