JP2019169639A - 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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- JP2019169639A JP2019169639A JP2018057207A JP2018057207A JP2019169639A JP 2019169639 A JP2019169639 A JP 2019169639A JP 2018057207 A JP2018057207 A JP 2018057207A JP 2018057207 A JP2018057207 A JP 2018057207A JP 2019169639 A JP2019169639 A JP 2019169639A
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- film
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- semiconductor device
- insulating film
- metal film
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Abstract
Description
<半導体チップの全体構造について>
本実施の形態の半導体装置を、図面を参照して説明する。
図2は、本実施の形態の半導体装置(半導体チップ)CPをパッケージ化した半導体装置(半導体パッケージ)PKGの一例を模式的に示す断面図であり、図3は、他の一例を示す断面図である。なお、図2に示される半導体装置PKGを、符号PKG1を付して半導体装置PKG1と称し、図3に示される半導体装置PKGを、符号PKG2を付して半導体装置PKG2と称することとする。
図6は、本実施の形態の半導体装置(半導体チップ)CPの要部断面図である。また、図7も、本実施の形態の半導体装置CPの要部断面図であり、図6と同じ断面が示されているが、図7では、層間絶縁膜IL8よりも下の構造は、図示を省略している。
本実施の形態の半導体装置CPの製造工程について、図11〜図22を参照して説明する。図11〜図22は、本実施の形態の半導体装置CPの製造工程中の要部断面図である。
図23〜図26を参照して、本発明者が検討した検討例の半導体装置(半導体チップ)CP100について説明する。図23は、本発明者が検討した検討例の半導体装置CP100の要部断面図であり、本実施の形態の上記図7に相当するものである。また、図24は、プローブ検査時に図23の金属膜ME100のプローブ接触領域PA100にプローブPRBを接触させる様子を示す断面図であり、上記図9に相当するものである。また、図25は、図23の金属膜ME100のワイヤ接合領域WA100にワイヤBWが接合された状態を示す断面図であり、上記図10に相当するものである。上記図7、図9および図10と同様に、図23〜図25においても、層間絶縁膜IL8よりも下の構造は、図示を省略している。また、図26は、検討例の半導体装置CP100の要部平面図であり、上記図8に相当するものである。図23〜図25の断面図に示されるパッドPD100および金属膜ME100は、図26のB−B線の位置で切断した断面図にほぼ対応している。
本実施の形態の半導体装置CPは、半導体基板SBと、半導体基板SB上に形成された層間絶縁膜IL8(第1絶縁膜)と、層間絶縁膜IL8上に形成されたパッドPDと、層間絶縁膜IL8上に、パッドPDを覆うように形成された絶縁膜PV(第2絶縁膜)と、絶縁膜PVに形成され、パッドPDの一部を露出する開口部OPと、を有している。本実施の形態の半導体装置CPは、開口部OPから露出するパッドPD上と絶縁膜PV上とに形成されかつパッドPDに電気的に接続された金属膜MEを、更に有している。金属膜MEは、開口部OPから露出するパッドPD上に位置する第1部分MEaと、絶縁膜PV上に位置する第2部分MEbとを、一体的に有している。
図31は、本実施の形態の半導体装置CPの変形例の要部断面図であり、上記図7に対応する断面図が示されている。また、図32は、プローブ検査時に図31の金属膜MEのプローブ接触領域PAにプローブPRBを接触させる様子を示す断面図であり、上記図9に相当するものである。また、図33は、図31の金属膜MEのワイヤ接合領域WAにワイヤBWが接合された状態を示す断面図であり、上記図10に相当するものである。上記図7、図9および図10と同様に、図31〜図33においても、層間絶縁膜IL8よりも下の構造は、図示を省略している。また、上記図10と同様に、図33においても、封止樹脂の図示は省略している。
AM1 Al含有導電膜
BD1,BD2 接合材
BL 半田ボール
BLD 接続端子
BR1,BR2 バリア導体膜
BW ワイヤ
CP,CP100 半導体装置
DL 導電性ランド
DP ダイパッド
GE ゲート電極
IL1,IL2,IL3,IL4,IL5,IL6,IL7,IL8 層間絶縁膜
KB,KB100 窪み
LD リード
M1,M2,M3,M4,M5,M6 配線
ME,ME1,ME2,ME100 金属膜
MEa 第1部分
MEb 第2部分
ME2a ニッケル膜
ME2b 金膜
MR1,MR2 封止部
OP,OP1,OP100 開口部
PA,PA100 プローブ接触領域
PV,PV1,PV2,PV100,PV101,PV102 絶縁膜
PC 配線基板
PD,PD100 パッド
PKG,PKG1,PKG2 半導体装置
PRB プローブ
SB 半導体基板
SD ソース・ドレイン領域
SH 開口部
ST 素子分離領域
V1 プラグ
V2,V3,V4,V5,V6,V7 ビア部
WA,WA100 ワイヤ接合領域
Claims (20)
- 半導体基板と、
前記半導体基板上に形成された第1絶縁膜と、
前記第1絶縁膜上に形成されたパッドと、
前記第1絶縁膜上に、前記パッドを覆うように形成された第2絶縁膜と、
前記第2絶縁膜に形成され、前記パッドの一部を露出する開口部と、
前記開口部から露出する前記パッド上と前記第2絶縁膜上とに形成され、前記パッドに電気的に接続された金属膜と、
を有し、
前記金属膜は、前記開口部から露出する前記パッド上に位置する第1部分と、前記第2絶縁膜上に位置する第2部分とを一体的に有し、
前記金属膜の上面は、ワイヤを接合するための第1領域と、プローブを接触させるための第2領域とを有し、
前記第1領域は、前記金属膜の前記第1部分に位置し、
前記第2領域は、前記金属膜の前記第2部分に位置している、半導体装置。 - 請求項1記載の半導体装置において、
前記第2絶縁膜は、無機絶縁膜、または、無機絶縁膜を含む積層膜である、半導体装置。 - 請求項1記載の半導体装置において、
前記第2絶縁膜は、窒化シリコン膜、または、窒化シリコン膜を含む積層膜である、半導体装置。 - 請求項1記載の半導体装置において、
前記第2絶縁膜は、窒化シリコン膜と前記窒化シリコン膜上の酸化シリコン膜との積層膜である、半導体装置。 - 請求項1記載の半導体装置において、
前記金属膜は、金膜を含む、半導体装置。 - 請求項1記載の半導体装置において、
前記金属膜は、ニッケル膜と前記ニッケル膜上の金膜とを含む積層膜からなり、
前記金膜は、前記積層膜の最上層である、半導体装置。 - 請求項6記載の半導体装置において、
前記金膜は、前記ニッケル膜よりも厚い、半導体装置。 - 請求項1記載の半導体装置において、
前記パッドは、アルミニウムパッドである、半導体装置。 - 請求項1記載の半導体装置において、
前記第2領域の下方には、前記第2絶縁膜および前記パッドが存在し、前記第1領域の
下方には、前記パッドは存在するが、前記第2絶縁膜は存在していない、半導体装置。 - 請求項1記載の半導体装置において、
前記第2絶縁膜の厚さは、前記パッドの厚さよりも厚い、半導体装置。 - 請求項1記載の半導体装置において、
前記金属膜の厚さは、前記パッドの厚さよりも厚い、半導体装置。 - (a)半導体基板を準備する工程、
(b)半導体基板の主面上に第1絶縁膜を形成する工程、
(c)前記第1絶縁膜上にパッドを形成する工程、
(d)前記第1絶縁膜上に、前記パッドを覆うように、第2絶縁膜を形成する工程、
(e)前記第2絶縁膜に、前記パッドの一部を露出する開口部を形成する工程、
(f)前記開口部から露出する前記パッド上と前記第2絶縁膜上とに金属膜を形成する工程、
(g)前記金属膜にプローブを接触させてプローブ検査を行う工程、
(h)前記金属膜にワイヤを接合する工程、
を有する半導体装置の製造方法であって、
前記金属膜は、前記開口部から露出する前記パッド上に位置する第1部分と、前記第2絶縁膜上に位置する第2部分とを一体的に有し、
前記(g)工程では、前記金属膜の前記第2部分に前記プローブを接触させ、
前記(h)工程では、前記金属膜の前記第1部分に前記ワイヤを接合する、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記第2絶縁膜は、無機絶縁膜、または、無機絶縁膜を含む積層膜である、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記第2絶縁膜は、窒化シリコン膜、または、窒化シリコン膜を含む積層膜である、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記第2絶縁膜は、窒化シリコン膜と前記窒化シリコン膜上の酸化シリコン膜との積層膜である、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記金属膜は、金膜を含む、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記金属膜は、ニッケル膜と前記ニッケル膜上の金膜とを含む積層膜からなり、
前記金膜は、前記積層膜の最上層である、半導体装置の製造方法。 - 請求項17記載の半導体装置の製造方法において、
前記金膜は、前記ニッケル膜よりも厚い、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記パッドは、アルミニウムパッドである、半導体装置の製造方法。 - 請求項12記載の半導体装置の製造方法において、
前記(g)工程で前記金属膜の上面における前記プローブが接触される領域の下方には、前記第2絶縁膜および前記パッドが存在し、
前記(h)工程で前記金属膜の上面における前記ワイヤが接合される領域の下方には、前記パッドは存在するが、前記第2絶縁膜は存在していない、半導体装置の製造方法。
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JP2021072341A (ja) * | 2019-10-30 | 2021-05-06 | キオクシア株式会社 | 半導体装置 |
CN111007686A (zh) * | 2019-11-14 | 2020-04-14 | Tcl华星光电技术有限公司 | 阵列基板、显示面板及制备方法 |
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