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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.:

US 10611932 B1

PDFFull Text
Date of Patent:
Apr. 07, 2020

Filed:

Aug. 12, 2015

Transparent adhesive sheet

Applicant:

Mitsubishi Chemical Corporation, Tokyo, JP;

Inventors:

Kahoru Niimi, Nagahama, JP;

Makoto Inenaga, Nagahama, JP;

Assignee:

Mitsubishi Chemical Corporation, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Sanza L McClendon

Int. Cl.
CPC ...
C09J 11/06 (2006.01); C09J 155/00 (2006.01); C09J 7/10 (2018.01); C08F 290/04 (2006.01); C09J 133/12 (2006.01); C09J 201/00 (2006.01); C09J 5/06 (2006.01); C09J 133/08 (2006.01); C09J 151/00 (2006.01); H01L 33/50 (2010.01); C08K 5/00 (2006.01); C08K 5/45 (2006.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
C09J 11/06 (2013.01); C08F 290/04 (2013.01); C08F 290/046 (2013.01); C09J 5/06 (2013.01); C09J 7/10 (2018.01); C09J 133/08 (2013.01); C09J 133/12 (2013.01); C09J 151/003 (2013.01); C09J 155/005 (2013.01); C09J 201/00 (2013.01); H01L 33/502 (2013.01); C08K 5/0041 (2013.01); C08K 5/45 (2013.01); C09J 2205/102 (2013.01); C09J 2205/114 (2013.01); C09J 2205/31 (2013.01); C09J 2433/00 (2013.01); C09J 2451/00 (2013.01); G02B 5/208 (2013.01);
Abstract

A photocurable adhesive sheet that can be photocured even if there are places such as print-concealed sections that are difficult for light to reach, and even if the adhesive sheet has a certain degree of thickness, the entire sheet can be cured. A transparent adhesive sheet formed from an adhesive composition containing: (A) a thermoplastic resin; (B) a crosslinking agent; (C) a photopolymerization initiator that reacts with light having a wavelength of at least 380 to 430 nm; and (D) a wavelength conversion agent that is excited by light having a wavelength shorter than 380 nm and that emits light having a wavelength of 380 to 550 nm. The transparent adhesive sheet is characterized by the adhesive sheet absorbance X at a wavelength of 390 nm and the adhesive sheet thickness Y satisfying relational formula (1):0.5≤≤12.  Formula (1):

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