METHOD FOR MANUFACTURING SEMICONDUCTOR PACKAGE

To suppress the occurrence of a conductive via failure when a semiconductor package is manufactured by a method including forming a wiring structure having a conductive via of a very small width through imprinting.SOLUTION: A method for manufacturing a semiconductor package is disclosed. This method...

Full description

Saved in:
Bibliographic Details
Main Authors HONDA KAZUTAKA, KAWASHITA SHINYA, NISHIDA MASATAKA
Format Patent
LanguageEnglish
Japanese
Published 22.03.2022
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:To suppress the occurrence of a conductive via failure when a semiconductor package is manufactured by a method including forming a wiring structure having a conductive via of a very small width through imprinting.SOLUTION: A method for manufacturing a semiconductor package is disclosed. This method includes the steps of: forming a pattern including a via hole 31 on an insulating resin layer 3 through imprinting which includes pushing a mold 5 into the insulating resin layer 3 while heating an insulating base material 1 and the mold 5 respectively to prescribed molding temperatures; and forming a metal layer including a conductive via filling the via hole 31 on the insulating resin layer 3. A value of (α×ΔT-β×Δt)×1000 is smaller than that of W×2.5, where W[μm] denotes the width of a tip surface 51S, α and β respectively denote linear expansion coefficients of the insulating base material 1 and the mold 5, and Δt denotes a difference between the molding temperature of the insulating base material 1 and 30°C and the molding temperature of the mold 5 and 30°C.SELECTED DRAWING: Figure 1 【課題】微小な幅を有する導電性ビアを有する配線構造体をインプリント法によって形成することを含む方法によって半導体パッケージを製造する場合に、導電性ビアの不良の発生を抑制すること。【解決手段】半導体パッケージを製造する方法が開示される。当該方法は、絶縁性基材1及びモールド5をそれぞれ所定の成形温度に加熱しながら、絶縁樹脂層3に対してモールド5を押し込むことを含むインプリント法によって、ビア孔31を含むパターンを絶縁樹脂層3に形成させる工程と、ビア孔31を充填する導電性ビアを含む金属層を絶縁樹脂層3上に形成する工程とを含む。先端面51Sの幅がW[μm]であり、絶縁性基材1及びモールド5の線膨張係数がそれぞれα及びβで、絶縁性基材1の成形温度と30℃との差、及びモールド5の成形温度と30℃との差がΔtであるとき、(α×ΔT-β×Δt)×1000の値がW×2.5の値よりも小さい。【選択図】図1
Bibliography:Application Number: JP20200151326