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. 29, 2002
Filed:
Aug. 01, 2000
Applicant:
Inventor:
Osamu Kuwabara, Tokyo, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/144 ;
U.S. Cl.
CPC ...
H01L 2/144 ;
Abstract
A sealing film is formed by a screen printing method. In this case, the temperature of the printing table is set at about 30 to 50° C. by the heat generation from a planar heater arranged within the printing table. A liquid sealing resin having a relatively high viscosity of about 500,000 to 1,500,000 cPS is used for forming the sealing film. However, the liquid sealing film is warmed by the printing table to about 30 to 50° C. As a result, the viscosity of the liquid sealing resin is lowered to about 50,000 to 200,000 cPS. After the curing, the viscosity of the sealing film is brought back to the original value of about 500,000 to 1,500,000 cPS.