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:
Aug. 18, 1998
Filed:
Sep. 09, 1996
Shunpei Watanabe, Saitama-ken, JP;
Takashi Suzuki, Saitama-ken, JP;
Shuuichiro Ikeda, Saitama-ken, JP;
Lintec Corporation, , JP;
Abstract
A pressure-sensitive adhesive sheet 1A is for use by sticking onto a liquid crystal cell, and it has a construction wherein the pressure-sensitive adhesive layer 3 is joined to one side of the base material layer 2 which is constructed with a light-polarizing sheet and a release sheet 4 stuck onto the other side from the base material layer 2 of the pressure-sensitive adhesive layer 3. As a main polymer for constituting the pressure-sensitive adhesive layer 3, an acrylic-based polymer is for example used, of which weight-average molecular weight is 600,000 to 2,000,000. Further, a plasticizer is added to the pressure-sensitive adhesive layer 3. According to the pressure-sensitive adhesive sheet, the stress which is produced by contraction, for example, of the base material layer is relieved and stress concentration can be reduced. In particular, white marking and color unevenness of the liquid crystal cell can be suppressed.