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:
Nov. 23, 1999
Filed:
Dec. 27, 1995
Applicant:
Inventor:
Marvin Lumbard, Los Gatos, CA (US);
Assignee:
Infineon Technologies Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ; H01L / ;
U.S. Cl.
CPC ...
361760 ; 174 524 ; 257 99 ; 257100 ; 257787 ; 361820 ;
Abstract
The heat tolerance of an LED alphanumeric display device having a clear epoxy encapsulation can be improved by matching the coefficient of thermal expansion (CTE) of the inner circuit board to the high CTE of the epoxy. When heat is applied to fix the device to a circuit board, the components will expand at a nearly equal rate, avoiding cracking and failure.