Presentation 2008-01-18
A Package-on-Package using Coreless Substrate with Excellent Power Integrity : The electrical characteristics of MLTS and the novel PoP structure
Kentaro Mori, Jun Sakai, Katsumi Kikuchi, Shinji Watanabe, Tomoo Murakami, Shintaro Yamamichi,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) We have successfully developed a novel Package-on-Package (PoP) technology for achieving small package thickness and low package warpage. The novel package structure is based on an ultra-thin coreless substrate, called a Multi-Layer Thin Substrate (MLTS). MLTS has considerable advantages over a conventional build-up PWB, especially for operation in the GHz range. The MLTS is fabricated by completely removing the Cu base plate after forming a high-density build-up structure on the base plate. In this paper, however, the Cu posts of 0.5 mm pitch and 125 μm height are formed by selective wet etching of the Cu base plate. If the MLTS has built-in Cu posts as external terminals, the overall substrate can be molded with an appropriate resin for the peripheral area as well as the chip mounting area. Therefore, the novel package can be expected to realize low warpage.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Package-on-Package (PoP) / Coreless Substrate / Cu post / Signal Integrity / Power Integrity
Paper # CPM2007-143,ICD2007-154
Date of Issue

Conference Information
Committee ICD
Conference Date 2008/1/10(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Package-on-Package using Coreless Substrate with Excellent Power Integrity : The electrical characteristics of MLTS and the novel PoP structure
Sub Title (in English)
Keyword(1) Package-on-Package (PoP)
Keyword(2) Coreless Substrate
Keyword(3) Cu post
Keyword(4) Signal Integrity
Keyword(5) Power Integrity
1st Author's Name Kentaro Mori
1st Author's Affiliation NEC Corporation()
2nd Author's Name Jun Sakai
2nd Author's Affiliation NEC Corporation
3rd Author's Name Katsumi Kikuchi
3rd Author's Affiliation NEC Corporation
4th Author's Name Shinji Watanabe
4th Author's Affiliation NEC Corporation
5th Author's Name Tomoo Murakami
5th Author's Affiliation NEC Corporation
6th Author's Name Shintaro Yamamichi
6th Author's Affiliation NEC Corporation
Date 2008-01-18
Paper # CPM2007-143,ICD2007-154
Volume (vol) vol.107
Number (no) 426
Page pp.pp.-
#Pages 6
Date of Issue