JPH0534928A - Mask pattern for lift off process - Google Patents

Mask pattern for lift off process

Info

Publication number
JPH0534928A
JPH0534928A JP19141391A JP19141391A JPH0534928A JP H0534928 A JPH0534928 A JP H0534928A JP 19141391 A JP19141391 A JP 19141391A JP 19141391 A JP19141391 A JP 19141391A JP H0534928 A JPH0534928 A JP H0534928A
Authority
JP
Japan
Prior art keywords
pattern
resist
lift
mask
patterns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP19141391A
Other languages
Japanese (ja)
Inventor
Yoshio Egashira
良夫 江頭
Naoki Oyama
直樹 大山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP19141391A priority Critical patent/JPH0534928A/en
Publication of JPH0534928A publication Critical patent/JPH0534928A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Weting (AREA)

Abstract

PURPOSE:To provide the mask pattern for a lift off process which facilitates peeling of a resist even for the mask patterns to be used for patterning with the lift off process and the patterns, such as enclosed patterns and fine patterns, having the parts having difficulty in peeling the resist and can form the prescribed patterns of vapor deposited films. CONSTITUTION:This mask pattern for the lift off process is provided with dummy patterns 100 near the parts, such as enclosed patterns 12 or fine patterns, having the difficulty in peeling the resist.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、リフトオフプロセスで
パターン加工を行うために使用するマスクパターンに関
し、特に、囲まれたパターンや微細なパターンなどのレ
ジスト剥離が困難な部位を有するリフトオフプロセス用
マスクパターンに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mask pattern used for patterning in a lift-off process, and more particularly to a mask for a lift-off process having a portion such as an enclosed pattern or a fine pattern where resist removal is difficult. Regarding patterns.

【0002】[0002]

【従来の技術】リフトオフプロセスとは、薄膜エッチン
グ技術の1種で、任意の薄膜パターン加工をフォトリゾ
グラフィ技術及びエッチング技術を用いて行う手法であ
る。図4は、従来のリフトオフプロセスの説明図であ
り、工程(a)で、パターン12を形成したマスク1を
準備し、工程(b)で、感光剤であるレジスト2を塗布
した基板3の表面に上記マスク1を重ねて光を照射し、
パターン12を転写し、工程(c)で、現像を行って上
記パターン12に対応するマスク図形の「型」を形成す
る。その際のA─A’断面は図のようになる。次いで、
工程(d)で、スパッタ装置等により蒸着膜4を形成す
る。その際のB−B’断面は図のようになる。さらに、
工程(e)で、レジスト剥離液を用いてレジスト2を除
去することにより、蒸着膜4のパターンを形成する。そ
の際のC−C’断面は図のようになる。
2. Description of the Related Art A lift-off process is a kind of thin film etching technique and is a technique for performing arbitrary thin film pattern processing by using a photolithography technique and an etching technique. FIG. 4 is an explanatory diagram of a conventional lift-off process. In step (a), a mask 1 having a pattern 12 is prepared, and in step (b), a surface of a substrate 3 coated with a resist 2 as a photosensitizer. The mask 1 is overlaid on the
The pattern 12 is transferred, and in step (c), development is performed to form a “mold” of a mask figure corresponding to the pattern 12. The cross section AA 'at that time is as shown in the figure. Then
In step (d), the vapor deposition film 4 is formed by a sputtering device or the like. The BB ′ cross section at that time is as shown in the figure. further,
In step (e), the resist 2 is removed using a resist stripping solution to form the pattern of the vapor deposition film 4. The CC ′ cross section at that time is as shown in the figure.

【0003】[0003]

【発明が解決しようとする課題】しかし、図4(a)の
ような囲まれたパターンやその他微細なパターンを使用
する場合は、レジスト剥離工程(e)において、レジス
トに対して剥離液を十分に接触させることができず、レ
ジストの剥離を確実に行うことができないという問題が
あった。図5は、レジストの剥離が不十分な例を示した
ものであり、工程(a)〜(e)は、図4の(a)〜
(e)にそれぞれ対応するところから説明を省略する。
図5の工程(e)及びC−C’断面図より明らかなよう
に、蒸着膜4のパターンに囲まれたレジスト2は、レジ
スト剥離液との接触面積が小さいところから、レジスト
剥離工程において除去されずに残った状態を示したもの
である。
However, when the enclosed pattern as shown in FIG. 4 (a) or other fine patterns are used, in the resist stripping step (e), a stripping solution is sufficiently added to the resist. However, there is a problem that the resist cannot be surely peeled off. FIG. 5 shows an example in which the peeling of the resist is insufficient, and steps (a) to (e) are the same as those shown in FIGS.
The description corresponding to (e) will be omitted.
As is clear from the step (e) and the CC ′ cross-sectional view of FIG. 5, the resist 2 surrounded by the pattern of the vapor deposition film 4 has a small contact area with the resist stripping solution, and thus is removed in the resist stripping step. It shows the state that remains without being.

【0004】そこで,本発明は、上記の問題点を解消
し、囲まれたパターンや微細なパターンなどのレジスト
剥離が困難な部位を有するパターンについても、レジス
トの剥離を容易にし、所定の蒸着膜パターンを形成する
ことのできるリフトオフプロセス用マスクパターンを提
供しようとするものである。
Therefore, the present invention solves the above problems and makes it easy to remove the resist even for a pattern having a portion where it is difficult to remove the resist, such as an enclosed pattern or a fine pattern, and a predetermined vapor deposition film is formed. An object of the present invention is to provide a mask pattern for a lift-off process capable of forming a pattern.

【0005】[0005]

【課題を解決するための手段】本発明は、リフトオフプ
ロセスでパターン加工を行うために使用するマスクパタ
ーンにおいて、囲まれたパターンや微細なパターンなど
のレジスト剥離が困難な部位の近傍にダミーパターンを
設けたことを特徴とするリフトオフプロセス用マスクパ
ターンである。
According to the present invention, in a mask pattern used for patterning in a lift-off process, a dummy pattern is provided in the vicinity of a portion where resist peeling is difficult such as an enclosed pattern or a fine pattern. It is a mask pattern for a lift-off process characterized by being provided.

【0006】[0006]

【作用】本発明は、図1のような囲まれたパターンや、
図2のような微細なパターンなどのレジスト剥離が困難
なパターンについて、レジスト剥離が困難な部位の近傍
にダミーパターンを設けることにより、レジストとレジ
スト剥離液との接触面積を大きくしてレジストの剥離を
容易にし、所定の蒸着膜パターンを確実に形成すること
を可能にしたものである。
In the present invention, the enclosed pattern as shown in FIG.
For a pattern such as the fine pattern shown in FIG. 2 where resist removal is difficult, a dummy pattern is provided in the vicinity of the site where resist removal is difficult, thereby increasing the contact area between the resist and the resist remover and removing the resist. And makes it possible to reliably form a predetermined vapor deposition film pattern.

【0007】[0007]

【実施例】図1のパターンにおいては、マスク11のパ
ターン12に囲まれた部位の中央にダミーパターン10
0を設けたものであり、また、図2パターンにおいて
は、マスク21のパターン22に挟まれた部位にダミー
パターン101を設けたものである。
EXAMPLE In the pattern of FIG. 1, a dummy pattern 10 is formed in the center of a portion surrounded by a pattern 12 of a mask 11.
2 is provided, and in the pattern of FIG. 2, the dummy pattern 101 is provided at a portion sandwiched by the patterns 22 of the mask 21.

【0008】図3は、図1のパターンを用いて蒸着膜パ
ターンを得る手順を示した図であり、各工程は図4の工
程(a)〜(e)にそれぞれ対応する。図3の工程
(a)で、パターン12及びダミーパターン100を形
成したマスク11を準備し、工程(b)で、感光剤であ
るレジスト2を塗布した基板3の表面に上記マスク11
を重ねて光を照射し、パターン12を転写し、工程
(c)で、現像を行って上記パターン12及びダミーパ
ターン100に対応するマスク図形の「型」を形成す
る。その際のA─A’断面は図のようになる。次いで、
工程(d)で、スパッタ装置等により蒸着膜4を形成す
る。その際のB−B’断面は図のようになる。その際
に、レジスト剥離液が矢印のように蒸着膜4のパターン
周囲のレジスト2に容易に接触することができる。さら
に、工程(e)で、レジスト剥離液を用いてレジスト2
を除去することにより、点線で示したレジスト2を確実
に除去して蒸着膜4のパターンを確実に形成することが
できる。その際のC−C’断面は図のようになる。図2
のパターンについても同様に蒸着膜パターンを形成する
ことができる。
FIG. 3 is a diagram showing a procedure for obtaining a vapor deposition film pattern using the pattern of FIG. 1, and each step corresponds to steps (a) to (e) of FIG. 4, respectively. In step (a) of FIG. 3, a mask 11 having a pattern 12 and a dummy pattern 100 formed thereon is prepared, and in step (b), the mask 11 is formed on the surface of a substrate 3 coated with a resist 2 as a photosensitizer.
Are overlapped with each other and irradiated with light to transfer the pattern 12, and in step (c), development is performed to form a “mold” of a mask figure corresponding to the pattern 12 and the dummy pattern 100. The cross section AA 'at that time is as shown in the figure. Then
In step (d), the vapor deposition film 4 is formed by a sputtering device or the like. The BB ′ cross section at that time is as shown in the figure. At that time, the resist stripper can easily contact the resist 2 around the pattern of the vapor deposition film 4 as shown by the arrow. Further, in the step (e), the resist 2 is removed by using a resist stripping solution.
By removing the, the resist 2 shown by the dotted line can be surely removed and the pattern of the vapor deposition film 4 can be surely formed. The CC ′ cross section at that time is as shown in the figure. Figure 2
The vapor deposition film pattern can be similarly formed with respect to the pattern.

【0009】[0009]

【発明の効果】本発明は、上記の構成を採用することに
より、囲まれたパターンや微細なパターンなどのレジス
ト剥離が困難なパターンについて、レジスト剥離が困難
な部位の近傍にダミーパターンを設けることにより、レ
ジストとレジスト剥離液との接触面積を大きくしてレジ
ストの剥離を容易にし、所定の蒸着膜パターンを確実に
形成することを可能にした。
According to the present invention, by adopting the above-mentioned configuration, a dummy pattern is provided in the vicinity of a portion where resist removal is difficult for a pattern such as an enclosed pattern or a fine pattern where resist removal is difficult. As a result, the contact area between the resist and the resist stripping liquid was increased to facilitate the resist stripping, and it was possible to reliably form a predetermined vapor deposition film pattern.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例であるリフトオフプロセス用マ
スクパターンの斜視図である。
FIG. 1 is a perspective view of a lift-off process mask pattern according to an embodiment of the present invention.

【図2】本発明の他の実施例であるリフトオフプロセス
用マスクパターンの斜視図である。
FIG. 2 is a perspective view of a lift-off process mask pattern according to another embodiment of the present invention.

【図3】図1のマスクパターンを使用して蒸着膜パター
ンを得る手順及び各工程の断面を示した図である。
FIG. 3 is a diagram showing a procedure of obtaining a vapor deposition film pattern using the mask pattern of FIG. 1 and a cross section of each step.

【図4】従来のマスクパターンを使用して理想的に蒸着
膜パターンを得たときの手順及び各工程の断面を示した
図である。
FIG. 4 is a diagram showing a procedure and a cross section of each step when an ideal deposition film pattern is obtained using a conventional mask pattern.

【図5】従来のマスクパターンを使用して現実に蒸着膜
パターンを得たときの手順及び各工程の断面を示した図
であり、レジストの残存する場合を示したものである。
FIG. 5 is a diagram showing a procedure and a cross section of each step when actually obtaining a vapor deposition film pattern using a conventional mask pattern, showing a case where a resist remains.

Claims (1)

【特許請求の範囲】 【請求項1】 リフトオフプロセスでパターン加工を行
うために使用するマスクパターンにおいて、囲まれたパ
ターンや微細なパターンなどのレジスト剥離が困難な部
位の近傍にダミーパターンを設けたことを特徴とするリ
フトオフプロセス用マスクパターン。
Claim: What is claimed is: 1. In a mask pattern used for patterning in a lift-off process, a dummy pattern is provided in the vicinity of a portion such as an enclosed pattern or a fine pattern where resist removal is difficult. A mask pattern for a lift-off process, which is characterized in that
JP19141391A 1991-07-31 1991-07-31 Mask pattern for lift off process Withdrawn JPH0534928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19141391A JPH0534928A (en) 1991-07-31 1991-07-31 Mask pattern for lift off process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19141391A JPH0534928A (en) 1991-07-31 1991-07-31 Mask pattern for lift off process

Publications (1)

Publication Number Publication Date
JPH0534928A true JPH0534928A (en) 1993-02-12

Family

ID=16274199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19141391A Withdrawn JPH0534928A (en) 1991-07-31 1991-07-31 Mask pattern for lift off process

Country Status (1)

Country Link
JP (1) JPH0534928A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0818198A (en) * 1994-06-29 1996-01-19 Fuji Elelctrochem Co Ltd Production of thin film pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0818198A (en) * 1994-06-29 1996-01-19 Fuji Elelctrochem Co Ltd Production of thin film pattern

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19981008