JP6524594B2 - 素子チップの製造方法 - Google Patents
素子チップの製造方法 Download PDFInfo
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- JP6524594B2 JP6524594B2 JP2016135232A JP2016135232A JP6524594B2 JP 6524594 B2 JP6524594 B2 JP 6524594B2 JP 2016135232 A JP2016135232 A JP 2016135232A JP 2016135232 A JP2016135232 A JP 2016135232A JP 6524594 B2 JP6524594 B2 JP 6524594B2
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
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Description
図1Aから図1Jは本発明の第1実施形態に係る半導体チップ(素子チップ)2の製造工程を示している。図1Jに示す最終工程を参照して、製造された半導体チップ2は、半導体層(第1層)4と、半導体層4上に形成された配線層(第2層)6と、配線層6上に形成された保護膜8およびバンプ(突出電極)10とを備える。半導体チップ2は、半導体ウエハ12が個片化されて形成されている。本実施形態では、半導体層4はSi又はSi系材料からなり、配線層6はSiO2などの絶縁膜とCuなどの金属からなる。ただし、半導体層4や配線層6の材質はこれらに限定されない。例えば、配線層6の絶縁膜の材質は、SiN、SiOC、又はLow−k材料等であってもよい。また、例えば、配線層6の金属の材質は、Al,Al合金、W等であってもよい。また、バンプ10に含まれる金属は特に限定されず、例えば、銅、銅と錫と銀との合金、銀と錫との合金、鉛と錫との合金、金、アルミニウム、アルミニウム合金等が挙げられる。バンプ10の形状は特に限定されず、角柱、円柱、山型、ボール等であってもよい。バンプ10の高さは、目的に応じて適宜設定すればよく、例えば、20〜200μmである。バンプ10の高さは、半導体層4の法線方向における、バンプ10の最大の高さである。バンプ10の配置および個数は特に限定されず、目的に応じて適宜設定される。
(第2実施形態)
図4A〜図4Kに各工程を示す本実施形態の半導体チップ2の製造方法は、第1実施形態と異なり、マスク形成工程の前に露出部形成工程を行っている。図1A〜図1Jに示した部分と同様の部分については同様の符号を付して説明を省略する。
図5A〜5Jに各工程を示す本実施形態の半導体チップ2の製造方法は、第1実施形態および第2実施形態と異なり、半導体ウエハ12の表面6AにBGテープ20を貼り付ける保護工程の前に、バンプ10をマスクするマスク形成工程が設けられている。これに関する以外は、図1A〜1Jの第1実施形態の半導体チップ2の製造方法と同様である。従って、図1A〜1Jに示した部分と同様の部分については同様の符号を付して説明を省略する。
第6工程(薄化工程)の前に第4工程(マスク形成工程)が行われるため、半導体ウエハ12が厚い状態で、マスク28の形成が可能となり、マスク形成の過程において半導体ウエハ12が割れるトラブルが発生しにくい。
図6A〜6Jに各工程を示す本実施形態の半導体チップ2の製造方法は、第1実施形態と異なり、露出部形成工程の前に、マスク形成工程が設けられている。これに関する以外は、図1A〜1Jの第1実施形態の半導体チップ2の製造方法と同様である。従って、図1A〜1Jに示した部分と同様の部分については同様の符号を付して説明を省略する。
4 半導体層(第1層)
4A 裏面(第2の面)
6 配線層(回路層)(第2層)
6A 表面(第1の面)
8 保護膜
10 バンプ(金属電極)
12 半導体ウエハ(基板)
14 素子領域
16 分割領域
18 露出部
20 BGテープ(保護テープ)
20A 粘着層
20B 基材
22 ダイシングテープ(保持テープ)
22A 粘着層
22B 基材
22C フレーム
24 粘着層
26 基材
28 マスク
50 ドライエッチング装置
52 チャンバ
54 アンテナ
56 第1高周波電源部
58 処理室
60 ステージ
62 第2高周波電源部
64 ガス導入口
66 エッチングガス源
68 排気口
70 真空排気部
100 スプレーコーティング装置
101 ステージ
102 スプレーノズル
103 配管
104 配管
Claims (5)
- 金属電極が露出した第1の面と、前記第1の面の反対側の第2の面と、前記金属電極が形成された複数の素子領域と、前記素子領域を画定する分割領域とを備える基板を準備し、
前記基板の前記第1の面に前記金属電極に沿うように、前記金属電極を被覆するとともに前記分割領域を露出させる開口を有するマスクを形成し、
前記基板の前記第1の面を第1のプラズマに晒して、前記金属電極が前記マスクによって被覆された状態で、前記開口に露出する前記分割領域を前記第2の面に達するまでエッチングすることにより、前記基板を個片化する
ことを含み、
前記金属電極が突出電極であり、
前記マスクの形成が、スプレーコーティング装置が備えるノズルから、前記マスクの原料を含むとともにメチルエチルケトンまたはプロピレングリコールモノメチルエーテルアセテートにより希釈された液体を圧縮ガスとともに前記基板の前記第1の面に吹き付けることを含む、
素子チップの製造方法。 - 前記基板の前記第2の面を保持テープで保持し、
前記マスクの形成後かつ前記保持テープによる保持後、前記基板を個片化する前に、前記基板を前記保持テープを介してステージに載置することを含む、請求項1に記載の素子チップの製造方法。 - 前記基板の個片化後、前記保持テープに保持された状態の前記個片化された前記基板を、第2のプラズマに晒すことにより、前記マスクを除去して前記金属電極を露出させることを含む、請求項2に記載の素子チップの製造方法。
- 前記基板は、前記第2の面を有する半導体層である第1層と、前記第1層の上に形成され、前記第1の面を有し、前記第1の面に前記金属電極が形成されている配線層である第2層とを備え、
前記マスクの形成後に、前記マスクを介して、前記基板表面に保護テープを貼り付け、
前記第1層を研削することを含む、請求項1から請求項3のいずれか1項に記載の素子チップの製造方法。 - 前記マスクの形成において、前記液体の吹き付けを行う前に、前記基板の表面に前記液体に対する濡れ性を均質化するための処理が行われる、請求項1から4のいずれか1項に記載の素子チップの製造方法。
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