JP2020136344A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2020136344A JP2020136344A JP2019024640A JP2019024640A JP2020136344A JP 2020136344 A JP2020136344 A JP 2020136344A JP 2019024640 A JP2019024640 A JP 2019024640A JP 2019024640 A JP2019024640 A JP 2019024640A JP 2020136344 A JP2020136344 A JP 2020136344A
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- metal
- electrode pad
- metal layer
- metal bump
- bump
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- H01L23/485—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body consisting of layered constructions comprising conductive layers and insulating layers, e.g. planar contacts
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Abstract
Description
図9は、上記実施形態の変形例の構成例を示す断面図である。上記実施形態において、金属ボール80は、金属バンプ70上に直接接触するように設けられている。一方、本変形例では、拡散防止膜90が金属ボール80と金属バンプ70との間に設けられている。拡散防止膜90には、例えば、ニッケル等の導電性金属が用いられる。拡散防止膜90は、金属バンプ70と金属ボール80との間で銅またはスズが相互に拡散することを抑制する。本変形例のその他の構成は、上記実施形態の対応する構成と同様でよい。
図10(A)および図10(B)は、上記実施形態の変形例2の構成例を示す断面図である。変形例2では、金属バンプ70および金属ボール80は、半導体装置1の両側辺のみに設けられており、上記実施形態の金属バンプ70および金属ボール80よりも少ない。変形例2のその他の構成は、上記実施形態と同様でよい。半導体装置1は、このような形態であってもよい。
Claims (5)
- 基板と、
前記基板の上方に設けられた絶縁膜と、
前記絶縁膜上に設けられた電極パッドと、
前記電極パッドの表面に設けられた金属バンプと、
前記金属バンプの側面に設けられた金属酸化物または金属水酸化物を含む側壁膜と、
前記金属バンプと前記電極パッドとの間に設けられ金属を含む第1部分、および、前記金属バンプの周辺において少なくとも前記電極パッドに設けられた金属酸化物または金属水酸化物を含む第2部分を有するバリアメタル層と、を備えた半導体装置。 - 前記バリアメタル層の面積は、前記電極パッドと前記金属バンプとの接触面積よりも大きい、請求項1に記載の半導体装置。
- 前記電極パッドは、アルミニウムを含み、
前記金属バンプは、銅を含み、
前記側壁膜は、酸化銅または水酸化銅を含み、
前記第1部分は、チタンと銅との積層膜であり、
前記第2部分は、チタンと酸化銅または水酸化銅との積層膜である、請求項1または請求項2に記載の半導体装置。 - 基板の上方にある絶縁膜に電極パッドを形成し、
前記電極パッドおよび前記絶縁膜の表面上にバリアメタル層を形成し、
前記電極パッドの表面のうち金属バンプを形成する第1領域以外の領域および前記絶縁膜の表面を被覆する第1マスク材を形成し、
前記第1領域上に該金属バンプの材料を堆積し、
前記第1マスク材を除去した後、前記絶縁膜および前記バリアメタル層上に第2マスク材を形成し、
前記金属バンプの周囲における前記電極パッド上の第2領域にある前記第2マスク材を除去するように該第2マスク材を形成し、
前記バリアメタル層の表面および前記金属バンプの側面を酸化または水酸化し、
前記第2マスク材を除去した後、前記第1および第2領域以外の酸化または水酸化されていない前記バリアメタル層を選択的に除去することを具備する、半導体装置の製造方法。 - 前記金属バンプおよび前記バリアメタル層の酸化または水酸化は、酸素を含むガスでアッシング処理を行うことによって実行される、請求項4に記載の半導体装置の製造方法。
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CN201910604143.6A CN111564423B (zh) | 2019-02-14 | 2019-07-05 | 半导体装置及其制造方法 |
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