KR100413044B1 - Method for forming via hole of semiconductor device - Google Patents

Method for forming via hole of semiconductor device Download PDF

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KR100413044B1
KR100413044B1 KR1019970029072A KR19970029072A KR100413044B1 KR 100413044 B1 KR100413044 B1 KR 100413044B1 KR 1019970029072 A KR1019970029072 A KR 1019970029072A KR 19970029072 A KR19970029072 A KR 19970029072A KR 100413044 B1 KR100413044 B1 KR 100413044B1
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film
spin
interlayer insulating
via hole
insulating film
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KR19990004912A (en
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이정석
이기엽
황창연
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주식회사 하이닉스반도체
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture 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
    • H01L21/18Manufacture 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
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/311Etching the insulating layers by chemical or physical means
    • H01L21/31127Etching organic layers
    • H01L21/31133Etching organic layers by chemical means
    • H01L21/31138Etching organic layers by chemical means by dry-etching
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26Processing photosensitive materials; Apparatus therefor
    • G03F7/42Stripping or agents therefor
    • G03F7/427Stripping or agents therefor using plasma means only
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76801Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
    • H01L21/76802Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

PURPOSE: A method for forming a via hole of a semiconductor device is provided to be capable of restraining a bowing phenomenon of an SOG(Spin On Glass) layer for effectively depositing a metal layer in a via hole. CONSTITUTION: The first barrier metal(22) and the first metal layer(23) are sequentially formed on the first interlayer dielectric(21). The second interlayer dielectric(24), an SOG layer(25), and the third interlayer dielectric(26) are sequentially formed on the entire surface of the resultant structure. A via hole is formed by selectively etching the third interlayer dielectric, the SOG layer, and the second interlayer dielectric for exposing the first metal layer using a photoresist pattern as an etching mask. The photoresist pattern is removed in a chamber while adding N2 gas of 400-600 sccm. Then, the second barrier metal(28) and the second metal layer(29) are sequentially formed on the resultant structure.

Description

반도체 장치의 비아홀 형성 방법Via hole formation method of semiconductor device

본 발명은 반도체 장치의 제조 공정 중 스핀온글래스(Spin-On-Glass)를 층간절연막으로 사용하는 반도체 장치의 비아홀 형성 방법에 관한 것이다.The present invention relates to a method of forming a via hole in a semiconductor device using spin-on-glass as an interlayer insulating film during a semiconductor device manufacturing process.

반도체 장치의 고집적화에 따라 금속 배선이 다층화 되는 추세이며, 종래에는 금속층간의 절연과 평탄화를 위해 금속층간에 플라즈마 화학 기상 증착법(Plasma Enhanced Chemical Vapor Deposition; 이하 PECVD)으로 산화막을 증착한다. 그러나 플라즈마 산화막으로 상부 공정을 위한 평탄화가 충분하지 못하여 금속 배선간의 간극을 메우기 위해 스핀온글래스(Spin On Glass: 이하 스핀온글래스라 함)막을 사용하고 있다.As the semiconductor devices are highly integrated, metal wirings tend to be multilayered. In the related art, oxide films are deposited by plasma enhanced chemical vapor deposition (PECVD) between metal layers for insulation and planarization between metal layers. However, since the plasma oxide film is not sufficiently planarized for the upper process, a spin on glass (hereinafter referred to as spin on glass) film is used to fill the gap between the metal wirings.

스핀온글래스는 액체 형태로 주로 스핀(spin) 도포 방법에 의해 도포되며 보이드(void) 없이 좁은 공간을 채우는 것이 가능하여 스텝커버리지(step coverage)가 양호하고 공정이 간단하다. 스핀온글래스는 실락산(siloxanes) 또는 실리케이트(silicates )가 알코올이 포함된 용매에 섞인 것으로, 차후의 베이크(bake)나 큐어링(curing) 공정에서 탈수(dehydration), 응결(condensation), 중합(polymerization) 등에 의해 실란올(silanol) 기(radical) 들이 고체화되어 금속 배선간의 간극을 메운다. 그러나, 스핀온글래스막은 막질이 열악하기 때문에 스핀온글래스막 상부와 하부를 플라즈마 산화막으로 감싸주어 즉, 플라즈마 산화막/스핀온글래스막/플라즈마 산화막으로 이루어지는 3개층의 절연막으로 금속층간을 절연한다.Spin-on glass is applied in a liquid form mainly by a spin coating method, and it is possible to fill a narrow space without voids so that the step coverage is good and the process is simple. Spin-on glass is a mixture of siloxanes or silicates in an alcohol-containing solvent, which is dehydrated, condensed, or polymerized during subsequent bake or curing processes. By polymerization, silanol radicals solidify the gap and fill the gap between metal lines. However, since the spin-on glass film is poor in film quality, the upper and lower portions of the spin-on glass film are wrapped with a plasma oxide film, that is, the metal layer is insulated with three insulating films consisting of a plasma oxide film, a spin-on glass film, and a plasma oxide film.

그러나, 상기와 같이 종래 기술에 의해 반도체 장치의 금속층간 절연막 형성 공정을 진행하게 될 경우 금속 배선간의 전기적 연결을 위한 비아홀(via Hole) 식각시 스핀온글래스막의 측벽이 노출된다. 따라서, 비아홀 형성 마스크로 사용된 포토레지스트 패턴을 제거하기 위한 O2플라즈마 공정에서 노출된 스핀온글래스막의 유기 성분이 산소와 반응하여 비아홀 측면에 보잉(bowing) 현상을 유발하는 문제점이 있었다.However, when the interlayer insulating film forming process of the semiconductor device is performed according to the related art as described above, the sidewalls of the spin-on glass film are exposed during the via hole etching for the electrical connection between the metal wires. Therefore, the organic component of the spin-on glass film exposed during the O 2 plasma process for removing the photoresist pattern used as the via hole forming mask reacts with oxygen, causing bowing on the side of the via hole.

이하, 도1a 내지 도1c를 참조하여 스핀온글래스막을 층간절연막으로 사용하는 반도체 장치의 종래의 비아홀 형성 방법을 살펴본다.Hereinafter, a method of forming a via hole of a semiconductor device using a spin on glass film as an interlayer insulating film will be described with reference to FIGS. 1A to 1C.

먼저, 도1a에 도시한 바와 같이 소정의 하부층이 형성된 반도체 기판(도시하지 않음) 상에 주로 산화막으로 이루어지는 제1 층간절연막(11)을 형성하고, 상기 제1 층간절연막(11) 상에 Ti. TiN, Ti/TiN 등의 제1 장벽금속막(12)과 알루미늄 또는 텅스텐 등으로 제1 금속막(13)을 차례로 증착한 다음, 상기 제1 금속막(13)과 제1 장벽금속막(12)을 선택적으로 식각 한다.First, as shown in FIG. 1A, a first interlayer insulating film 11 mainly composed of an oxide film is formed on a semiconductor substrate (not shown) on which a predetermined lower layer is formed, and on the first interlayer insulating film 11, Ti. The first metal film 13 is sequentially deposited by using a first barrier metal film 12 such as TiN, Ti / TiN, and aluminum or tungsten, and then the first metal film 13 and the first barrier metal film 12 are deposited. ) Is selectively etched.

다음으로, 도1b에 도시한 바와 같이 상기 전체 구조에 제2 층간절연막(14), 스핀온글래스막(15), 제3 층간절연막(16)을 차례로 형성한다.Next, as shown in Fig. 1B, a second interlayer insulating film 14, a spin on glass film 15, and a third interlayer insulating film 16 are sequentially formed on the entire structure.

이어서, 도1c에 도시한 바와 같이, 비아홀(Via Hole)을 형성하기 위하여 포토레지스트 패턴(17)을 형성하고, 상기 포토레지스트 패턴(17)을 식각 방지막으로하여 상기 제3 층간절연막(16), 스핀온글래스막(15) 및 제2 층간절연막(14)을 식각하여 제1 금속막(13)이 드러나도록 한다.Subsequently, as shown in FIG. 1C, a photoresist pattern 17 is formed to form a via hole, and the third interlayer insulating layer 16 is formed by using the photoresist pattern 17 as an etch stop layer. The spin-on glass layer 15 and the second interlayer dielectric layer 14 are etched to expose the first metal layer 13.

다음으로, 도1d에 도시한 바와 같이 상기 포토레지스트 패턴(17)을 O2플라즈마 제거 챔버에서 제거한다. O2플라즈마를 이용한 포토레지스트 패턴 제거 공정에서 산소가 스핀온글래스 막의 유기 성분(Si-CH3)과 반응하여 H20, CO 및 CO2를 형성하여 스핀온글래스 막의 측벽에 보잉(bowing) 현상이 나타난다.Next, as shown in FIG. 1D, the photoresist pattern 17 is removed from the O 2 plasma removal chamber. In the photoresist pattern removal process using O 2 plasma, oxygen reacts with the organic component (Si-CH 3 ) of the spin-on glass film to form H 2 O, CO, and CO 2 to bowing the sidewall of the spin-on glass film. Appears.

도1e는 상기 전체 구조에 Ti, TiN, Ti/TiN 등으로 제2 장벽금속막(18)과 알루미늄 등으로 제2 금속막(19)을 증착한 후의 단면도이다. 도시한 바와 같이 스핀온글래스막의 측벽에서 발생하는 보잉 현상으로 인하여 제2 장벽금속막(18)이 끊어져 제2 금속막(19)의 스텝커버리지가 악화되고, 제2 장벽금속막(18)으로 덮이지 않은 스핀온글래스막에서 스핀온글래스에 함유되었던 수분이 빠져나와 이후의 압력 및 열이 가한 테스트 단계에서 문제가 발생하는 단점이 있다.FIG. 1E is a cross-sectional view after the second barrier metal film 18 is deposited with Ti, TiN, Ti / TiN, etc., and the second metal film 19 is made of aluminum or the like in the entire structure. As illustrated, the second barrier metal film 18 is broken due to the bowing phenomenon occurring on the sidewall of the spin-on glass film, thereby degrading the step coverage of the second metal film 19 and covering the second barrier metal film 18. Moisture contained in the spin-on glass is released from the non-spin-on glass film, which causes a problem in a subsequent test step in which pressure and heat are applied.

상기와 같은 문제점을 해결하기 위하여 안출된 본 발명은 스핀온글래스막을 층간절연막으로 사용하는 반도체 장치의 스핀온글래스 막의 보잉 현상을 억제하여 비아홀 내에 금속막을 효과적으로 증착하는 것이 가능한 반도체 장치의 비아홀 형성 방법을 제공하는데 그 목적이 있다.The present invention devised to solve the above problems is to provide a method of forming a via hole in a semiconductor device capable of effectively depositing a metal film in a via hole by suppressing a bowing phenomenon of the spin on glass film of a semiconductor device using the spin on glass film as an interlayer insulating film. The purpose is to provide.

도1a 내지 도1e는 종래의 기술에 따른 반도체 장치의 비아홀 형성 공정 단면도.1A to 1E are cross-sectional views of a via hole forming process of a conventional semiconductor device.

도2a 내지 도2e는 본 발명의 일실시예에 따른 반도체 장치의 비아홀 형성 공정 단면도.2A through 2E are cross-sectional views of a via hole forming process in a semiconductor device according to an embodiment of the present invention.

* 도면의 주요 부분에 대한 설명* Description of the main parts of the drawing

11, 21: 제1 층간 절연막 12, 22, 17, 27: 장벽금속막11, 21: first interlayer insulating film 12, 22, 17, 27: barrier metal film

13, 23, 18, 28: 금속막 14, 24: 제2 층간 절연막13, 23, 18, 28: metal film 14, 24: second interlayer insulating film

15, 25: 스핀온글래스막 16, 26: 제3 층간절연막15, 25: spin on glass film 16, 26: third interlayer insulating film

상기 목적을 달성하기 위한 본 발명은 반도체 장치의 비아홀 형성 방법에 있어서, 소정의 하부층이 형성된 반도체 기판 상에 제1 금속 배선을 형성하는 단계; 전체 구조 상부에 제1 층간절연막, 스핀온글래스막 및 제2 층간절연막을 차례로 형성하는 단계; 상기 제2 층간절연막, 스핀온글래스막 및 제1 층간절연막을 선택적으로 식각하여 상기 제1 금속 배선이 드러나도록 하는 단계; 및 산소 및 질소를 포함하는 플라즈마 분위기에서 상기 포토레지스트 패턴을 제거하는 단계를 포함하여 이루어진다.According to another aspect of the present invention, there is provided a method of forming a via hole in a semiconductor device, the method including: forming a first metal wire on a semiconductor substrate on which a predetermined lower layer is formed; Sequentially forming a first interlayer insulating film, a spin-on glass film, and a second interlayer insulating film over the entire structure; Selectively etching the second interlayer insulating film, the spin-on-glass film, and the first interlayer insulating film to expose the first metal wires; And removing the photoresist pattern in a plasma atmosphere containing oxygen and nitrogen.

금속 배선을 전기적으로 연결하기 위한 비아홀을 형성한 후, O2플라즈마를 사용하여 비아홀 형성 마스크로 사용된 포토레지스트 패턴을 제거하는 공정에서 제거 시간이 감소할수록 스핀온글래스막의 측벽의 식각 정도는 감소한다. 따라서, 본 발명은 비아홀 형성 후, O2플라즈마를 이용한 포토레지스트 제거시 N2기체를 첨가해서 포토레지스트 패턴 제거 비율을 크게 증가시켜 O2를 이용한 제거 시간을 감소시킴으로써 스핀온글래스막 측벽에서 일어나는 보잉 현상을 방지한다.In the process of removing the photoresist pattern used as the via hole forming mask using an O 2 plasma after forming the via hole for electrically connecting the metal wiring, the etching degree of the sidewall of the spin-on glass film decreases as the removal time decreases. . Accordingly, the present invention takes place in the on-glass film side wall spin by reducing the removal time using the after forming via holes, O 2 plasma for using the photoresist removed in O 2 by by adding N 2 gas greatly increases the removal rate photoresist pattern Boeing Prevent the phenomenon.

이하, 첨부된 도면을 참조하여 본 발명의 일실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

먼저, 도2a에 도시한 바와 같이 소정의 하부층이 형성된 반도체 기판(도시하지 않음) 상에 주로 산화막으로 이루어지는 제1 층간절연막(21)을 형성하고, 상기 제1 층간절연막(21) 상에 Ti. TiN, Ti/TiN 등의 제1 장벽금속막(22)과 알루미늄 또는 텅스텐 등으로 제1 금속막(23)을 차례로 증착한 다음, 상기 제1 금속막(23)과 제1 장벽금속막(22)을 선택적으로 식각한다.First, as shown in FIG. 2A, a first interlayer insulating film 21 mainly composed of an oxide film is formed on a semiconductor substrate (not shown) on which a predetermined lower layer is formed, and on the first interlayer insulating film 21, Ti. After depositing the first barrier metal film 22 such as TiN, Ti / TiN, and the like, the first metal film 23 is sequentially made of aluminum or tungsten, and then the first metal film 23 and the first barrier metal film 22 are deposited. Selectively etch).

다음으로, 도2b에 도시한 바와 같이 상기 전체 구조에 제2 층간절연막(24), 스핀온글래스막(25), 제3 층간절연막(26)을 차례로 형성한다.Next, as shown in Fig. 2B, a second interlayer insulating film 24, a spin on glass film 25, and a third interlayer insulating film 26 are sequentially formed on the entire structure.

이어서, 도2c에 도시한 바와 같이, 비아홀(Via Hole)을 형성하기 위하여 포토레지스트 패턴(27)을 형성하고, 상기 포토레지스트 패턴(27)을 식각 방지막으로하여 상기 제3 층간절연막(26), 스핀온글래스막(25) 및 제2 층간절연막(24)을 식각하여 제1 금속막(23)이 드러나도록 한다.Next, as shown in FIG. 2C, the third interlayer insulating layer 26 is formed by forming a photoresist pattern 27 to form a via hole, and using the photoresist pattern 27 as an etch stop layer. The spin-on glass layer 25 and the second interlayer insulating layer 24 are etched to expose the first metal layer 23.

다음으로, 도2d에 도시한 바와 같이 상기 포토레지스트 패턴(27)을 O2플라즈마 제거 챔버내에 제거하는데 이때, 400 내지 600 sccm의 N2를 첨가하여 포토레지스트 패턴 제거 비율을 증가시킨다. 따라서 산소와 스핀온글래스막(25)의 반응 시간이 감소되고 상기 N2기체로 인한 접착력이 좋은 중합체(polymer)를 형성으로 보호(passivation) 효과가 나타나 스핀온글래스 막의 측벽에서 보잉 현상이 방지된다.Next, as shown in FIG. 2D, the photoresist pattern 27 is removed into the O 2 plasma removal chamber. At this time, 400 to 600 sccm of N 2 is added to increase the photoresist pattern removal rate. Accordingly, the reaction time between the oxygen and the spin-on glass film 25 is reduced, and a passivation effect is generated by forming a polymer having good adhesion due to the N 2 gas, thereby preventing the bowing phenomenon on the sidewall of the spin-on glass film. .

도2e는 Ti, TiN, Ti/TiN 등으로 장벽금속막(28)과 알루미늄 등으로 제2 금속막(29)을 증착한 후의 단면도이다. 도시한 바와 같이 스핀온글래스막(25) 측벽의 보잉현상 발생이 방지되어 비아홀 내에 증착되는 장벽금속막(28)의 끊임이 없이 연속적으로 증착된다. 따라서, 스핀온글래스막의 노출에 따라 스핀온글래스막에 함유되었던 수분이 빠져 나오는 문제점을 제거할 수 있으며, 상기 장벽금속막(28) 상에 증착되는 제2 금속막(28)의 스텝커버리지를 개선할 수 있다.2E is a cross-sectional view after the barrier metal film 28 is deposited with Ti, TiN, Ti / TiN, etc., and the second metal film 29 is made of aluminum or the like. As shown, the occurrence of the bowing phenomenon on the sidewalls of the spin-on-glass film 25 is prevented, and thus the barrier metal film 28 deposited in the via hole is continuously deposited. Therefore, the problem that the moisture contained in the spin-on glass film escapes with the exposure of the spin-on glass film can be eliminated, and the step coverage of the second metal film 28 deposited on the barrier metal film 28 is improved. can do.

이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하다는 것이 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the technical field of the present invention without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

상기와 같이 이루어지는 본 발명은 스핀온글래스막을 층간절연막으로 사용하는 반도체 장치의 비아홀 형성 과정에서, 비아홀 형성 마스크인 포토레지스트 패턴을 O2및 N2가 포함된플라즈마로 제거함으로써, 비아홀 형성시 노출된 스핀온글래스막의 측벽이 O2와 반응하는 시간이 단축되고, N2의 보호 효과로 스핀온글래스막의 측벽에서 일어나는 보잉 현상을 방지하여 스텝커버리지가 양호한 금속막을 형성함과 동시에 스핀온글래스막에 함유된 수분이 빠져 나오는 것이 방지되어 반도체 소자의 신뢰성을 향상시킬 수 있다.According to the present invention as described above, during the via hole formation process of a semiconductor device using the spin-on-glass film as an interlayer insulating film, the photoresist pattern, which is a via hole formation mask, is removed by plasma containing O 2 and N 2 , thereby exposing the via hole. The time for the sidewall of the spin-on-glass film to react with O 2 is shortened, and the protective effect of N 2 prevents the bowing phenomenon occurring on the sidewall of the spin-on-glass film, thereby forming a metal film with good step coverage and being included in the spin-on glass film. The escaped moisture can be prevented to improve the reliability of the semiconductor device.

Claims (3)

소정의 하부층이 형성된 반도체 기판 상에 제1 금속 배선을 형성하는 단계;Forming a first metal wiring on a semiconductor substrate on which a predetermined lower layer is formed; 전체 구조 상부에 제1 층간절연막, 스핀온글래스막 및 제2 층간절연막을 차례로 형성하는 단계;Sequentially forming a first interlayer insulating film, a spin-on glass film, and a second interlayer insulating film over the entire structure; 상기 제2 층간절연막, 스핀온글래스막 및 제1 층간절연막을 선택적으로 식각하여 상기 제1 금속 배선이 드러나도록 하는 단계; 및Selectively etching the second interlayer insulating film, the spin-on-glass film, and the first interlayer insulating film to expose the first metal wires; And 산소 및 질소를 포함하는 플라즈마 분위기에서 상기 포토레지스트 패턴을 제거하는 단계를 포함하여 이루어지는 반도체 장치의 비아홀 형성 방법.Removing the photoresist pattern in a plasma atmosphere containing oxygen and nitrogen. 제1항에 있어서,The method of claim 1, 상기 질소의 양을 400 내지 600 sccm으로 하는 반도체 장치의 비아홀 형성 방법.The via-hole formation method of a semiconductor device which makes the quantity of nitrogen 400-600 sccm. 제1항에 있어서,The method of claim 1, 상기 제1 층간절연막 및 상기 제2 층간절연막을 산화막으로 형성하는 반도체 장치의 비아홀 형성 방법.And forming the first interlayer insulating film and the second interlayer insulating film as an oxide film.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05160022A (en) * 1991-12-09 1993-06-25 Mitsubishi Electric Corp Manufacture of semiconductor device
KR940027101A (en) * 1993-05-18 1994-12-10 문정환 Manufacturing Method of Semiconductor Device
US5393702A (en) * 1993-07-06 1995-02-28 United Microelectronics Corporation Via sidewall SOG nitridation for via filling
US5413963A (en) * 1994-08-12 1995-05-09 United Microelectronics Corporation Method for depositing an insulating interlayer in a semiconductor metallurgy system
KR970013070A (en) * 1995-08-23 1997-03-29 기타오카 다카시 Semiconductor device and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05160022A (en) * 1991-12-09 1993-06-25 Mitsubishi Electric Corp Manufacture of semiconductor device
KR940027101A (en) * 1993-05-18 1994-12-10 문정환 Manufacturing Method of Semiconductor Device
US5393702A (en) * 1993-07-06 1995-02-28 United Microelectronics Corporation Via sidewall SOG nitridation for via filling
US5413963A (en) * 1994-08-12 1995-05-09 United Microelectronics Corporation Method for depositing an insulating interlayer in a semiconductor metallurgy system
KR970013070A (en) * 1995-08-23 1997-03-29 기타오카 다카시 Semiconductor device and manufacturing method thereof

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