JP6456238B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP6456238B2 JP6456238B2 JP2015099065A JP2015099065A JP6456238B2 JP 6456238 B2 JP6456238 B2 JP 6456238B2 JP 2015099065 A JP2015099065 A JP 2015099065A JP 2015099065 A JP2015099065 A JP 2015099065A JP 6456238 B2 JP6456238 B2 JP 6456238B2
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Description
本実施の形態の半導体装置は、複数のMISFET(Meta Insulator Semiconductor Field Effect Transistor)を有する。半導体装置は、矩形状のチップ領域に形成され、半導体ウエハには、複数のチップ領域が行列状に配置されている。複数の半導体装置は、一枚の半導体ウエハ上に形成される。
変形例1は、図3のステップS4の第1周辺露光の直後に、半導体ウエハSW(レジスト層PR)の表面を純水により水洗処理するものである。
変形例2は、図3のステップS4の第1周辺露光の直後に、半導体ウエハSWに熱処理を加えるものである。熱処理条件は、70℃、10秒程度とし、露光後熱処理よりも低温、短時間とするのが好適である。
変形例3は、図3のプロセスフローにおいて、第2周辺露光を液浸露光の前に実施するものである。第1周辺露光と第2周辺露光の順序は、液浸露光の前であれば、どちらが先でも良いが、第1周辺露光と第2周辺露光の両方を実施することが肝要である。露光条件は、上記実施の形態と同様であり、第1周辺露光と第2周辺露光とは、それぞれ、露光領域と露光条件が異なる。つまり、第2周辺露光領域WEE2の幅は、撥水性を制御するための第1周辺露光領域WEE1の幅よりも広くすることが肝要である。この関係を維持することで、第1周辺露光における露光光が、第2周辺露光領域WEE2の内側(第2周辺露光領域内周W2の内側(中心側))に形成されるチップ領域CHに対して、悪影響を及ぼさない。例えば、第2周辺露光において、露光光の露光量を大きくすれば、第1周辺露光を省略できるが、図15の第2周辺露光領域内周W2の内側のチップ領域に影響が出るため、第1周辺露光と第2周辺露光とを併用するのが好適である。
2 被加工膜
3 下層
3a 下層パターン
4 中間層
5 素子分離絶縁膜
CH チップ領域
CP 中央部
GE ゲート電極
GI ゲート絶縁膜
GP ギャップ
GV 溝
IL 液浸露光領域
LS レンズ
LTS 光源
MK1、MK2、MK3 フォトマスク
MS 液浸液
NM 低濃度半導体領域
NH 高濃度半導体領域
NZ ノズル
NZa 流入口
NZb 吸入口
PC 周辺部
PR レジスト層
PRa レジストパターン
ST ウエハステージ
STI 素子分離領域
SUB 半導体基板
SP 側壁絶縁膜
SW 半導体ウエハ
VD 気泡
WF 外周
W1 第1周辺露光領域内周
W2 第2周辺露光領域内周
WEE1 第1周辺露光領域
WEE2 第2周辺露光領域
WSG ウエハステージガイド
Claims (13)
- (a)略円形の外周を有する半導体基板を用意する工程、
(b)前記半導体基板上に被加工膜を形成する工程、
(c)前記被加工膜上に化学増幅型レジスト層を形成する工程、
(d)前記半導体基板の前記外周から第1幅を有する領域において、前記化学増幅型レジスト層に第1露光光を照射する第1周辺露光を実施する工程、
(e)前記(d)工程後、前記化学増幅型レジスト層に第2露光光を照射する液浸露光を実施する工程、
(f)前記半導体基板の前記外周から第2幅を有する領域において、前記化学増幅型レジスト層に第3露光光を照射する第2周辺露光を実施する工程、
(g)前記(f)工程後、前記化学増幅型レジスト層を現像処理することにより、前記第2露光光および前記第3露光光が照射された領域の前記化学増幅型レジスト層を除去して第1パターンを有するレジストパターンを形成する工程、
(h)前記(g)工程後、前記第1パターンを有するように、前記被加工膜にエッチングを実施する工程、
を有し、
前記第2幅は、前記第1幅よりも広い、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記化学増幅型レジスト層は、トップコートレスレジストである、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記液浸露光は、レンズと前記化学増幅型レジスト層との間に液浸液を保持した状態で、前記半導体基板を、前記レンズに対してスキャンしながら実施する、半導体装置の製造方法。 - 請求項3記載の半導体装置の製造方法において、
前記(e)工程では、前記半導体基板の周囲を囲むように、前記半導体基板の外周から所定の距離離れて、ウエハステージガイドが配置されており、前記液浸液が、前記ウエハステージガイドと前記半導体基板に跨った状態で、前記液浸露光を実施する、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記第1露光光および前記第3露光光の波長は、前記第2露光光の波長よりも長い、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記(d)工程と(e)工程との間に、さらに、
(i)前記化学増幅型レジスト層の表面を純水により洗浄する工程、
を有する、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記(d)工程と(e)工程との間に、さらに、
(j)前記化学増幅型レジスト層に、第1温度の第1熱処理を加える工程、
を有する、半導体装置の製造方法。 - 請求項7記載の半導体装置の製造方法において、
前記(f)工程と(g)工程との間に、さらに、
(k)前記化学増幅型レジスト層に、第2温度の第2熱処理を加える工程、
を有し、
前記第1温度は、前記第2温度よりも低い、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記(h)工程後に、さらに、
(l)前記半導体基板に、前記第1パターンを有する溝を形成する工程、
(m)前記溝内に選択的に絶縁膜を埋め込み、素子分離領域を形成する工程、
を有する、半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記被加工膜は、導体膜であって、
前記(h)工程後に、さらに、
(n)前記エッチングが実施された前記被加工膜の両端において、前記半導体基板の主面に一対の半導体層を形成する工程、
を有する、半導体装置の製造方法。 - (a)略円形の外周を有する半導体基板を用意する工程、
(b)前記半導体基板上に被加工膜を形成する工程、
(c)前記被加工膜上に化学増幅型レジスト層を形成する工程、
(d)前記半導体基板の前記外周から第1幅を有する領域において、前記化学増幅型レジスト層に第1露光光を照射する第1周辺露光を実施する工程、
(e)前記半導体基板の前記外周から第2幅を有する領域において、前記化学増幅型レジスト層に第3露光光を照射する第2周辺露光を実施する工程、
(f)前記化学増幅型レジスト層に第2露光光を照射する液浸露光を実施する工程、
(g)前記(f)工程後、前記化学増幅型レジスト層を現像処理することにより、前記第2露光光および前記第3露光光が照射された領域の前記化学増幅型レジスト層を除去して第1パターンを有するレジストパターンを形成する工程、
(h)前記(g)工程後、前記第1パターンを有するように、前記被加工膜にエッチングを実施する工程、
を有し、
前記(d)工程は、前記(f)工程の前に実施し、
前記第2幅は、前記第1幅よりも広い、半導体装置の製造方法。 - 請求項11記載の半導体装置の製造方法において、
前記(d)工程後に前記(e)工程を実施する、半導体装置の製造方法。 - 請求項11記載の半導体装置の製造方法において、
前記(e)工程後に前記(d)工程を実施する、半導体装置の製造方法。
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JP2015099065A JP6456238B2 (ja) | 2015-05-14 | 2015-05-14 | 半導体装置の製造方法 |
EP16166157.4A EP3093712A1 (en) | 2015-05-14 | 2016-04-20 | Photolithographic process for manufacturing a semiconductor device |
TW105112740A TWI699821B (zh) | 2015-05-14 | 2016-04-25 | 半導體裝置之製造方法 |
US15/137,964 US9627203B2 (en) | 2015-05-14 | 2016-04-25 | Manufacturing method of semiconductor device |
KR1020160057451A KR20160134515A (ko) | 2015-05-14 | 2016-05-11 | 반도체 장치의 제조 방법 |
CN201610312858.0A CN106158598B (zh) | 2015-05-14 | 2016-05-12 | 半导体器件的制造方法 |
US15/451,525 US9847226B2 (en) | 2015-05-14 | 2017-03-07 | Manufacturing method of semiconductor device |
US15/811,282 US20180068845A1 (en) | 2015-05-14 | 2017-11-13 | Manufacturing method of semiconductor device |
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US20180068845A1 (en) | 2018-03-08 |
CN106158598B (zh) | 2021-11-02 |
US20170178897A1 (en) | 2017-06-22 |
JP2016218099A (ja) | 2016-12-22 |
TW201709275A (zh) | 2017-03-01 |
KR20160134515A (ko) | 2016-11-23 |
US20160336173A1 (en) | 2016-11-17 |
US9847226B2 (en) | 2017-12-19 |
TWI699821B (zh) | 2020-07-21 |
US9627203B2 (en) | 2017-04-18 |
CN106158598A (zh) | 2016-11-23 |
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