Invention Grant
- Patent Title: Wiring board for semiconductor devices, semiconductor device, electronic device, and motherboard
- Patent Title (中): 半导体器件,半导体器件,电子设备和主板的接线板
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Application No.: US12362670Application Date: 2009-01-30
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Publication No.: US08507805B2Publication Date: 2013-08-13
- Inventor: Seiya Fujii
- Applicant: Seiya Fujii
- Applicant Address: JP Tokyo
- Assignee: Elpida Memory, Inc.
- Current Assignee: Elpida Memory, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2008-021376 20080131
- Main IPC: H05K1/16
- IPC: H05K1/16 ; H01L21/56

Abstract:
In a wiring board according to the present invention, a substrate, a solder resist provided on the substrate, a land, a wiring line, and a connection portion connecting the wiring line and the land, the connection portion is provided with a recess as a non-flat portion, and is formed to comprise a width greater than a width of the wiring line and smaller than a width (diameter) of the land, the width of the connection portion being gradually increased from the wiring line toward the land.
Public/Granted literature
- US20090196003A1 WIRING BOARD FOR SEMICONDUCTOR DEVICES, SEMICONDUCTOR DEVICE, ELECTRONIC DEVICE, AND MOTHERBOARD Public/Granted day:2009-08-06
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