JP2000269329A - Manufacture for semiconductor device - Google Patents

Manufacture for semiconductor device

Info

Publication number
JP2000269329A
JP2000269329A JP11070213A JP7021399A JP2000269329A JP 2000269329 A JP2000269329 A JP 2000269329A JP 11070213 A JP11070213 A JP 11070213A JP 7021399 A JP7021399 A JP 7021399A JP 2000269329 A JP2000269329 A JP 2000269329A
Authority
JP
Japan
Prior art keywords
connection hole
film
etching
wiring groove
insulating film
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.)
Granted
Application number
JP11070213A
Other languages
Japanese (ja)
Other versions
JP3282607B2 (en
Inventor
Takaharu Kunugi
敬治 功刀
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP07021399A priority Critical patent/JP3282607B2/en
Publication of JP2000269329A publication Critical patent/JP2000269329A/en
Application granted granted Critical
Publication of JP3282607B2 publication Critical patent/JP3282607B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Electrodes Of Semiconductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration of shapes of a connection hole and a wiring groove by a method wherein increase in an etching amount by sputtering for an angular part of an opening edge of the connection hole opened in an insulation film is suppressed. SOLUTION: When a connection hole 7 and a wiring groove 8 are simultaneously formed, etching is carried out until the connection hole 7 reaches a lower layer wiring 1. At that time, part of a Si3N3 film 5 remaining behind in a side wall of the connection hole 7 which is a second etching stopper film is also etched by sputtering. However, until ending the etching, as the Si3N3 film 5 remaining behind in the side wall of the connection hole 7 exists so as to erect upwardly of a first etching stopper film 3, it is prevented that an angular part of an opening edge of the connection hole 7 provided in a first etching stopper film 3 is over etched, and it is possible to open the connection hole 7 with the substantially same diameter. Thus, it is possible to attain the connection hole 7 and wiring groove 8 having a superior shape.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、絶縁膜に接続孔と
配線溝を同時に形成するデュアルダマシン(Dual
Damascene)プロセスを用いた半導体装置の製
造方法に関するものである。
The present invention relates to a dual damascene (Dual damascene) for simultaneously forming a connection hole and a wiring groove in an insulating film.
The present invention relates to a method for manufacturing a semiconductor device using a damascene process.

【0002】[0002]

【従来の技術】半導体デバイスの微細化に伴い、配線の
多層化及び微細化の要求は強まっている。その要求に応
える手段として、ダマシン(Damascene)プロ
セスの開発が進められている。
2. Description of the Related Art Along with the miniaturization of semiconductor devices, there is an increasing demand for multilayer and fine wiring. As a means to meet the demand, development of a damascene process is being promoted.

【0003】ダマシンプロセスとは、エッチングにより
予め配線溝を形成し、スパッタ法やCVD法により、
W,Al合金,Cuのメタルを配線溝に埋め込み、その
後、層間膜との選択比のある条件下の下に、CMP(C
hemical Mechanical Polish
ing)を行なうことにより、配線溝の形成を行なうも
のである。
In the damascene process, a wiring groove is formed in advance by etching, and the wiring groove is formed by sputtering or CVD.
A metal of W, Al alloy, or Cu is buried in the wiring groove, and then, the CMP (C
chemical Mechanical Polish
ing) to form a wiring groove.

【0004】さらに、接続孔と溝配線をあらかじめエッ
チング加工し、その後、メタル埋め込み及びメタルCM
Pを行なうことにより、接続孔と配線溝を同時に形成す
るデュアルダマシン(Dual Damascene)
プロセスが提案され、盛んに開発が行なわれている。
[0004] Further, the connection hole and the groove wiring are etched in advance, and thereafter, metal embedding and metal CM are performed.
Dual damascene (Dual Damascene) in which a connection hole and a wiring groove are simultaneously formed by performing P
A process has been proposed and is under active development.

【0005】このデュアルダマシンプロセスは、工程数
の簡略化ができるため、コスト面からも大きな期待を集
めている。
[0005] This dual damascene process has attracted great expectations in terms of cost because the number of steps can be simplified.

【0006】このデュアルダマシンプロセスにおいて、
接続孔と溝配線のエッチング加工方法が提案されてい
る。その方法を図を用いて説明する。
In this dual damascene process,
An etching method for connecting holes and trench wiring has been proposed. The method will be described with reference to the drawings.

【0007】図5に示すように、まず第1の層間絶縁膜
2及びエッチングストッパー膜3及び第2の層間絶縁膜
4を順次堆積する。第1の層間絶縁膜2の堆積後は、C
MPやエッチバック法を用いて平坦化を行なうのが一般
的である。
As shown in FIG. 5, first, a first interlayer insulating film 2, an etching stopper film 3, and a second interlayer insulating film 4 are sequentially deposited. After the first interlayer insulating film 2 is deposited, C
Generally, planarization is performed using MP or an etch-back method.

【0008】次にリソグラフィーにより接続孔形成用の
レジストパターンを形成した後、このレジストパターン
をマスクとして第2の層間絶縁膜4及びエッチングスト
ッパー膜3を順次エッチングし、接続孔7を開口する。
Next, after a resist pattern for forming a connection hole is formed by lithography, the second interlayer insulating film 4 and the etching stopper film 3 are sequentially etched using the resist pattern as a mask to open a connection hole 7.

【0009】次に、リソグラフィーにより配線溝形成用
のレジストパターン6を第2の層間絶縁膜4上に形成す
る。
Next, a resist pattern 6 for forming a wiring groove is formed on the second interlayer insulating film 4 by lithography.

【0010】引き続いて図6に示すように、レジストパ
ターン6をマスクとして、第2の層間絶縁膜4,及び接
続孔7として第1の層間絶縁膜2をエッチングする。
Subsequently, as shown in FIG. 6, using the resist pattern 6 as a mask, the first interlayer insulating film 2 as the second interlayer insulating film 4 and the connection hole 7 is etched.

【0011】エッチングストッパー膜3及び下層配線1
がエッチングのストッパーとして働くため、接続孔7及
び配線溝8が同時に形成される。最後にレジストパター
ン6を除去する。1は下層配線である。
[0011] Etching stopper film 3 and lower wiring 1
Serves as an etching stopper, so that the connection hole 7 and the wiring groove 8 are formed at the same time. Finally, the resist pattern 6 is removed. Reference numeral 1 denotes a lower wiring.

【0012】[0012]

【発明が解決しようとする課題】しかしながら、図5及
び図6に示す方法では、エッチングの制御が難しいとい
う問題がある。
However, the method shown in FIGS. 5 and 6 has a problem that it is difficult to control the etching.

【0013】接続孔7の内部は、エッチングガスが供給
されにくいため、配線溝8のエッチング量に比べて接続
孔7のエッチング量が少なくなり、過剰にエッチングを
行なわないと、接続孔7を開口することができない。
Since the etching gas is hardly supplied to the inside of the connection hole 7, the etching amount of the connection hole 7 is smaller than the etching amount of the wiring groove 8. If the etching is not performed excessively, the connection hole 7 is opened. Can not do it.

【0014】過剰にエッチングを行なうと、角がスパッ
タされてエッチングされるため、接続孔7上部付近のエ
ッチングストッパー膜3、さらには下層にある第1の層
間絶縁膜2もエッチングされてしまう。そのため、目標
とするデュアルダマシン形状が得られくなるという問題
が生じる。
If the etching is performed excessively, the corners are sputtered and etched, so that the etching stopper film 3 near the upper portion of the connection hole 7 and the first interlayer insulating film 2 in the lower layer are also etched. Therefore, there is a problem that a target dual damascene shape cannot be obtained.

【0015】また図8及び図9に示すの方法では、第1
の層間絶縁膜2及びエッチングストッパー膜3を順次堆
積した後、リソグラフィーにより接続孔7の形成用レジ
ストパターンを形成する。
In the method shown in FIGS. 8 and 9, the first
After sequentially depositing the interlayer insulating film 2 and the etching stopper film 3, a resist pattern for forming the connection hole 7 is formed by lithography.

【0016】このレジストパターンをマスクとして、エ
ッチングストッパー膜3及び第1の層間絶縁膜2をエッ
チングし、図8に示すように接続孔7を形成し、第2の
層間絶縁膜4を堆積する。
Using this resist pattern as a mask, the etching stopper film 3 and the first interlayer insulating film 2 are etched to form a connection hole 7 as shown in FIG. 8, and a second interlayer insulating film 4 is deposited.

【0017】次に図9に示すように、リソグラフィーに
より第2の層間絶縁膜4上に配線溝形成用のレジストパ
ターン6を形成する。
Next, as shown in FIG. 9, a resist pattern 6 for forming a wiring groove is formed on the second interlayer insulating film 4 by lithography.

【0018】このレジストパターン6をマスクとして第
2の層間絶縁膜4をエッチングし、図10に示すように
接続孔7及び溝配線8を同時形成する。
Using this resist pattern 6 as a mask, the second interlayer insulating film 4 is etched, and a connection hole 7 and a groove wiring 8 are simultaneously formed as shown in FIG.

【0019】しかしながら、図8及び図9に示す第2の
方法は、第1の方法と同様に、接続孔7と配線溝8を同
時形成するエッチングの制御性に問題があり、図7に示
すように接続孔7の開口縁の角部がテーパ上に大幅にエ
ッチングされた形状になってしまうという問題がある。
However, the second method shown in FIGS. 8 and 9 has a problem in the controllability of etching for simultaneously forming the connection hole 7 and the wiring groove 8 as in the first method. As described above, there is a problem that the corner of the opening edge of the connection hole 7 becomes a shape largely etched on the taper.

【0020】本発明の目的は、デュアルダマシンプロセ
スにおいて高い制御性で良好な接続孔及び配線溝を形成
できる半導体装置の製造方法を提供することにある。
An object of the present invention is to provide a method of manufacturing a semiconductor device capable of forming good connection holes and wiring grooves with high controllability in a dual damascene process.

【0021】[0021]

【課題を解決するための手段】前記目的を達成するた
め、本発明に係る半導体装置の製造方法は、デュアルダ
マシン(Dual Damascene)プロセスを用
いて絶縁膜に接続孔と配線溝を同時に形成する半導体装
置の製造方法であって、絶縁膜に開口される前記接続孔
の開口縁の角部に対するスパッタによるエッチング量の
増加を抑制するものである。
In order to achieve the above object, a method of manufacturing a semiconductor device according to the present invention is directed to a semiconductor device in which a connection hole and a wiring groove are simultaneously formed in an insulating film using a dual damascene process. A method of manufacturing a device, which suppresses an increase in an etching amount due to sputtering with respect to a corner of an opening edge of the connection hole opened in an insulating film.

【0022】また前記絶縁膜に開口される前記接続孔の
開口縁の角部領域にエッチングストッパー膜を形成し、
スパッタによるエッチング量の増加を抑制する。
An etching stopper film is formed in a corner region of an opening edge of the connection hole opened in the insulating film;
An increase in the amount of etching due to sputtering is suppressed.

【0023】[0023]

【発明の実施の形態】以下、本発明の実施の形態を図に
より説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

【0024】図1〜図4は、本発明の一実施形態に係る
半導体装置の製造方法を工程順に示す断面図である。
1 to 4 are sectional views showing a method of manufacturing a semiconductor device according to an embodiment of the present invention in the order of steps.

【0025】まず図1に示すように、下層配線1上に、
例えばプラズマCVD法などを用いて、第1の層間絶縁
膜2としての膜厚が例えば800nmのSiO2膜2、
第1のエッチングストッパー膜3としての膜厚が例えば
100nmのSi34膜3、第2の絶縁層間膜4として
の膜厚が例えば800nmのSiO2膜4を順次形成す
る。
First, as shown in FIG.
For example, by using a plasma CVD method or the like, the SiO 2 film 2 having a thickness of, for example, 800 nm as the first interlayer insulating film 2 is formed.
An Si 3 N 4 film 3 having a thickness of, for example, 100 nm as the first etching stopper film 3 and an SiO 2 film 4 having a thickness of, for example, 800 nm as the second insulating interlayer film 4 are sequentially formed.

【0026】次に、SiO2膜4上にリソグラフィーに
より接続孔形成用のレジストパターン(図示せず)を形
成した後、このレジストパターンをマスクとして、Si
2膜4及びSi34膜3を順次エッチングし、接続孔
7を開口する。
Next, after a resist pattern (not shown) for forming a connection hole is formed on the SiO 2 film 4 by lithography, the resist pattern is used as a mask to form Si.
The O 2 film 4 and the Si 3 N 4 film 3 are sequentially etched to open a connection hole 7.

【0027】引き続いてレジストパターンを除去した
後、第2のエッチングストッパー膜5としての膜厚が例
えば20nmのSi34膜5を、接続孔7を含むSiO
2膜4上に堆積する。
Subsequently, after removing the resist pattern, an Si 3 N 4 film 5 having a thickness of, for example, 20 nm as the second etching stopper film 5 is replaced with a SiO 2 film including the connection hole 7.
2 Deposited on the film 4.

【0028】次に図2に示すように、Si34膜5を、
例えばCHF3とO2の混合ガスによる異方性エッチング
法を用いてエッチングして、Si34膜5を接続孔7の
側壁部のみに残留させる。
Next, as shown in FIG. 2, the Si 3 N 4 film 5 is
For example, etching is performed using an anisotropic etching method using a mixed gas of CHF 3 and O 2 to leave the Si 3 N 4 film 5 only on the side wall of the connection hole 7.

【0029】次にSiO2膜4上に配線溝形成用のレジ
ストパターン6を形成する。
Next, a resist pattern 6 for forming a wiring groove is formed on the SiO 2 film 4.

【0030】次に図3に示すように、レジストパターン
6をマスクとして、SiO2膜4をエッチングする。
Next, as shown in FIG. 3, the SiO 2 film 4 is etched using the resist pattern 6 as a mask.

【0031】SiO2膜4をエッチングする際、図3に
示すように配線溝部8は、エッチングストッパー層であ
るSi34膜3の深さに形成し、Si34膜3が存在し
ない接続孔7の部分は、下層配線1の深さにエッチング
して形成する。
[0031] etching the SiO 2 film 4, wiring groove 8 as shown in FIG. 3, and a depth of the Si 3 N 4 film 3 as an etching stopper layer, there is no the Si 3 N 4 film 3 The connection hole 7 is formed by etching to the depth of the lower wiring 1.

【0032】この場合、形成される接続孔7の径は、第
2の層間絶縁膜4に形成した接続孔7の径から、接続孔
7の側壁に残留する第2のエッチングストッパー膜5の
膜厚の2倍の値を引いた値になる。
In this case, the diameter of the connection hole 7 to be formed is determined by the diameter of the connection hole 7 formed in the second interlayer insulating film 4 and the thickness of the second etching stopper film 5 remaining on the side wall of the connection hole 7. The value is obtained by subtracting twice the thickness.

【0033】そのため、レジストパターン6に設ける接
続孔形成用の開口パターンの径は、接続孔7の目標径の
大きさに、接続孔7の側壁に残留する第2のエッチング
ストッパー膜5の膜厚の2倍の値を足した値として設定
しておく。
Therefore, the diameter of the opening pattern for forming the connection hole provided in the resist pattern 6 is set to the target diameter of the connection hole 7 and the thickness of the second etching stopper film 5 remaining on the side wall of the connection hole 7. Is set as a value obtained by adding twice the value of.

【0034】次に図4に示すように、レジストパターン
6を除去した後、第1のエッチングストッパー膜である
Si34膜3及び第2のエッチングストッパー膜である
Si 34膜5を、例えばラジカル成分が主体のSF6
Heの混合ガスを用いたプラズマ法を用いて等方性ドラ
イエッチングして除去する。
Next, as shown in FIG.
After removing 6, a first etching stopper film is formed.
SiThreeNFourA film 3 and a second etching stopper film
Si ThreeNFourThe film 5 is made of, for example, SF mainly containing a radical component.6When
An isotropic drive using a plasma method using a mixed gas of He.
Etch and remove.

【0035】以上のように本発明の実施形態では、接続
孔7と配線溝8を同時形成する際、そのエッチングは、
接続孔7が下層配線1に到達するまで行なう。その際、
第2のエッチングストッパー膜である、接続孔7の側壁
に残留したSi34膜5もスパッタにより一部がエッチ
ングされるが、エッチング終了時まで、接続孔7の側壁
に残留したSi34膜5が第1のエッチングストッパー
膜3より上方に立上がって存在することにより、第1の
エッチングストッパー膜3に設けた接続孔7の開口縁の
角部が過剰にエッチングされることが阻止されることと
なり、ほぼ同一径で接続孔7を開口することができ、良
好な形状の接続孔7及び配線溝8を得ることができる。
As described above, in the embodiment of the present invention, when the connection hole 7 and the wiring groove 8 are simultaneously formed, the etching is
The process is performed until the connection hole 7 reaches the lower wiring 1. that time,
A second etching stopper film and in part by even the sputter the Si 3 N 4 film 5 remaining on the side wall of the connection hole 7 is etched, until the end of etching, Si 3 remaining on the side wall of the connection hole 7 N Since the fourth film 5 rises above the first etching stopper film 3, the corner of the opening edge of the connection hole 7 provided in the first etching stopper film 3 is prevented from being excessively etched. As a result, the connection holes 7 can be opened with substantially the same diameter, and the connection holes 7 and the wiring grooves 8 having good shapes can be obtained.

【0036】なお、本発明の一実施形態について具体的
に説明したが、上述の実施形態に限定されるものではな
く、本発明の技術的思想に基づく各種の変形が可能であ
る。例えば、上述した実施形態においては、図3及び図
4のようにレジストパターン6を除去した後にSi34
膜3とSi34膜5を除去しているが、Si34膜3と
Si34膜5を除去した後に配線溝形成用レジストパタ
ーン6を除去するようにしてもよい。
Although one embodiment of the present invention has been specifically described, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible. For example, in the embodiment described above, Si 3 N 4 after removing the resist pattern 6 as shown in FIGS. 3 and 4
Although the film 3 and the Si 3 N 4 film 5 are removed, the wiring groove forming resist pattern 6 may be removed after the Si 3 N 4 film 3 and the Si 3 N 4 film 5 are removed.

【0037】また、第1の層間絶縁膜2及び第2の層間
絶縁膜4としてSiO2膜を用いたが、SiOx(x≠
2)膜,SiOF膜,及びこれらの膜にB、P等を添加
した膜を用いてもよい。また、HSQ(hydroge
nsilsesquioxane)膜やPTFE(po
ly−tetrafluoroethylene)膜の
ような有機膜を用いてもよい。
Although the SiO 2 film was used as the first interlayer insulating film 2 and the second interlayer insulating film 4, SiO x (x ≠
2) A film, a SiOF film, or a film obtained by adding B, P, or the like to these films may be used. In addition, HSQ (hydroge
nsilsesquioxane) membrane or PTFE (po
An organic film such as a ly-tetrafluoroethylene film may be used.

【0038】また、Si34膜の除去には、SF6とH
eの混合ガスによる等方性ドライエッチング法を用いた
が、CHF3とO2の混合ガス等による異方性ドライエッ
チング法を用いてもよい。
For removing the Si 3 N 4 film, SF 6 and H
Although an isotropic dry etching method using a mixed gas of e is used, an anisotropic dry etching method using a mixed gas of CHF 3 and O 2 or the like may be used.

【0039】また、エッチングストッパー層としてSi
34膜を用いたが、絶縁膜のエッチング時にエッチング
耐性を有するものであれば、いずれのものであってもよ
く、ポリマーのような有機膜であっても良い。
Further, Si as an etching stopper layer
3 N 4 The film was used, so long as it has an etching resistance during the etching of the insulating film may also be any of those may be an organic film such as a polymer.

【0040】[0040]

【発明の効果】以上説明したように本発明によれば、デ
ュアルダマシン(Dual Damascene)プロ
セスを用いて絶縁膜に接続孔と配線溝を同時に形成する
際に、絶縁膜に開口される接続孔の開口縁の角部に対す
るスパッタによるエッチング量の増加を抑制するため、
接続孔及び配線溝の形状の悪化を抑制することができ
る。
As described above, according to the present invention, when a connection hole and a wiring groove are simultaneously formed in an insulating film using a dual damascene (Dual Damascene) process, the connection hole formed in the insulating film is removed. In order to suppress an increase in the etching amount due to sputtering on the corners of the opening edge,
Deterioration of the shape of the connection hole and the wiring groove can be suppressed.

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

【図1】本発明の一実施形態に係る半導体装置の製造方
法を製造工程順に示す断面図である。
FIG. 1 is a sectional view illustrating a method for manufacturing a semiconductor device according to an embodiment of the present invention in the order of manufacturing steps.

【図2】本発明の一実施形態に係る半導体装置の製造方
法を製造工程順に示す断面図である。
FIG. 2 is a cross-sectional view illustrating a method of manufacturing a semiconductor device according to an embodiment of the present invention in the order of manufacturing steps.

【図3】本発明の一実施形態に係る半導体装置の製造方
法を製造工程順に示す断面図である。
FIG. 3 is a cross-sectional view illustrating a method of manufacturing a semiconductor device according to an embodiment of the present invention in the order of manufacturing steps.

【図4】本発明の一実施形態に係る半導体装置の製造方
法を製造工程順に示す断面図である。
FIG. 4 is a cross-sectional view illustrating a method of manufacturing a semiconductor device according to an embodiment of the present invention in the order of manufacturing steps.

【図5】従来例に係る半導体装置の製造方法を製造工程
順に示す断面図である。
FIG. 5 is a sectional view illustrating a method of manufacturing a semiconductor device according to a conventional example in the order of manufacturing steps.

【図6】従来例に係る半導体装置の製造方法を製造工程
順に示す断面図である。
FIG. 6 is a cross-sectional view illustrating a method of manufacturing a semiconductor device according to a conventional example in the order of manufacturing steps.

【図7】従来例に係る半導体装置の製造方法における問
題を説明する断面図である。
FIG. 7 is a cross-sectional view illustrating a problem in a method of manufacturing a semiconductor device according to a conventional example.

【図8】他の従来例に係る半導体装置の製造方法を製造
工程順に示す断面図である。
FIG. 8 is a cross-sectional view showing a method of manufacturing a semiconductor device according to another conventional example in the order of manufacturing steps.

【図9】他の従来例に係る半導体装置の製造方法を製造
工程順に示す断面図である。
FIG. 9 is a cross-sectional view showing a method of manufacturing a semiconductor device according to another conventional example in the order of manufacturing steps.

【図10】他の従来例に係る半導体装置の製造方法を製
造工程順に示す断面図である。
FIG. 10 is a cross-sectional view showing a method of manufacturing a semiconductor device according to another conventional example in the order of manufacturing steps.

【符号の説明】[Explanation of symbols]

1 下層配線 2 第1の層間絶縁膜 3 第1のエッチングストッパー膜 4 第2の層間絶縁膜 5 第2のエッチングストッパー膜 6 レジストパターン 7 接続孔 8 配線溝 DESCRIPTION OF SYMBOLS 1 Lower wiring 2 First interlayer insulating film 3 First etching stopper film 4 Second interlayer insulating film 5 Second etching stopper film 6 Resist pattern 7 Connection hole 8 Wiring groove

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 デュアルダマシン(Dual Dama
scene)プロセスを用いて絶縁膜に接続孔と配線溝
を同時に形成する半導体装置の製造方法であって、 絶縁膜に開口される前記接続孔の開口縁の角部に対する
スパッタによるエッチング量の増加を抑制することを特
徴とする半導体装置の製造方法。
1. Dual damascene (Dual Dama)
A method of manufacturing a semiconductor device, wherein a connection hole and a wiring groove are simultaneously formed in an insulating film by using a process (scene), wherein an increase in the amount of etching by sputtering with respect to a corner of an opening edge of the connection hole opened in the insulating film is reduced. A method for manufacturing a semiconductor device, comprising:
【請求項2】 絶縁膜に開口される前記接続孔の開口縁
の角部領域にエッチングストッパー膜を形成し、スパッ
タによるエッチング量の増加を抑制することを特徴とす
る請求項1に記載の半導体装置の製造方法。
2. The semiconductor according to claim 1, wherein an etching stopper film is formed in a corner region of an opening edge of the connection hole opened in the insulating film to suppress an increase in an etching amount due to sputtering. Device manufacturing method.
JP07021399A 1999-03-16 1999-03-16 Method for manufacturing semiconductor device Expired - Fee Related JP3282607B2 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07021399A JP3282607B2 (en) 1999-03-16 1999-03-16 Method for manufacturing semiconductor device

Publications (2)

Publication Number Publication Date
JP2000269329A true JP2000269329A (en) 2000-09-29
JP3282607B2 JP3282607B2 (en) 2002-05-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3282607B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002001619A1 (en) * 2000-06-26 2002-01-03 Tokyo Electron Limited Etching method
KR100835414B1 (en) 2006-12-05 2008-06-04 동부일렉트로닉스 주식회사 Method for manufacturing in semiconductor device
JP2021132229A (en) * 2015-10-29 2021-09-09 株式会社半導体エネルギー研究所 Semiconductor device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102326090B1 (en) 2015-10-16 2021-11-12 삼성전자주식회사 Semiconductor devices and methods of manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002001619A1 (en) * 2000-06-26 2002-01-03 Tokyo Electron Limited Etching method
US7030028B2 (en) 2000-06-26 2006-04-18 Tokyo Electron Limited Etching method
KR100835414B1 (en) 2006-12-05 2008-06-04 동부일렉트로닉스 주식회사 Method for manufacturing in semiconductor device
JP2021132229A (en) * 2015-10-29 2021-09-09 株式会社半導体エネルギー研究所 Semiconductor device
US11776966B2 (en) 2015-10-29 2023-10-03 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and method for manufacturing the semiconductor device

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