Invention Grant
- Patent Title: Film for flip chip type semiconductor back surface
- Patent Title (中): 倒装芯片型半导体背面薄膜
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Application No.: US12975893Application Date: 2010-12-22
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Publication No.: US08704382B2Publication Date: 2014-04-22
- Inventor: Naohide Takamoto , Takeshi Matsumura , Goji Shiga
- Applicant: Naohide Takamoto , Takeshi Matsumura , Goji Shiga
- Applicant Address: JP Osaka
- Assignee: Nitto Denko Corporation
- Current Assignee: Nitto Denko Corporation
- Current Assignee Address: JP Osaka
- Agency: Sughrue Mion, PLLC
- Priority: JP2009-292767 20091224; JP2010-253031 20101111
- Main IPC: H01L23/48
- IPC: H01L23/48 ; H01L21/44

Abstract:
The present invention provides a film for flip chip type semiconductor back surface, which is to be formed on a back surface of a semiconductor element flip-chip connected on an adherend, the film including a wafer adhesion layer and a laser marking layer, in which the wafer adhesion layer has a light transmittance of 40% or more in terms of a light having a wavelength of 532 nm and the laser marking layer has a light transmittance of less than 40% in terms of a light having a wavelength of 532 nm.
Public/Granted literature
- US20110156279A1 FILM FOR FLIP CHIP TYPE SEMICONDUCTOR BACK SURFACE Public/Granted day:2011-06-30
Information query
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