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. 26, 2002
Filed:
Nov. 27, 2000
Lintec Corporation, , JP;
Abstract
An improved adhesive sheet can exhibit an excellent anti-blister characteristic without susceptible to the property of the base material. The adhesive sheet includes a base material that is formed from a base material film and a thin film laminated onto the base material film, an adhesive layer and a release sheet. The adhesive layer contains an adhesive component and a curing component as its main composition. The curing component is of the type that is to be cured by irradiation with radiation. As for such radiation-curing type component, materials containing acrylic-based monomer or oligomer can be used. The adhesive layer has a storage modulus (dynamic modulus) in which a ratio of storage modulus G ′/G ′ of the adhesive layer lies within the range of 1.2 to 50, wherein G ′ is a storage modulus of the adhesive layer before curing at a temperature of 25° C. and at a frequency of 1 Hz, and G ′ is a storage modulus of the adhesive layer after curing at a temperature of 25° C. and at a frequency of 1 Hz.