Invention Grant
- Patent Title: Dicing sheet and a production method of a semiconductor chip
- Patent Title (中): 切割片和半导体芯片的制造方法
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Application No.: US13665972Application Date: 2012-11-01
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Publication No.: US09312162B2Publication Date: 2016-04-12
- Inventor: Yosuke Sato , Michio Kanai , Hayato Nakanishi
- Applicant: LINTEC Corporation
- Applicant Address: JP Tokyo
- Assignee: LINTEC Corporation
- Current Assignee: LINTEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Cahn & Samuels, LLP
- Priority: JP2011-241020 20111102
- Main IPC: H01L21/683
- IPC: H01L21/683 ; H01L21/78 ; H05K1/02 ; H05K1/11

Abstract:
A dicing sheet includes a base, an intermediate layer on one face of the base, and an pressure sensitive adhesive layer provided on the intermediate layer and having the thickness of 8 to 30 μm. The pressure sensitive adhesive layer includes a compound having an energy ray curable double bond in a molecule, and a storage elasticity G′ at 23° C. of the pressure sensitive adhesive layer before curing is larger than 4 times of a storage elasticity at 23° C. of the intermediate layer. When the dicing sheet is laminated via the adhesive sheet on a wafer formed with a cylinder shape electrodes having a height of 15 μm and a diameter of 15 μm at a pitch of 40 μm having 3 rows 3 columns in equal spacing, at a center of the electrode of the cylinder shape electrodes formed in 3 rows 3 columns, the pressure sensitive adhesive layer does not contact at a part of a height of 7.5 μm or less of the electrode.
Public/Granted literature
- US20130133938A1 Dicing Sheet and a Production Method of a Semiconductor Chip Public/Granted day:2013-05-30
Information query
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