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JP2000299380A Expired / Lapsed JP ⏱️ 0.0 years remaining

Method for forming contact of semiconductor device

Assignee: SK Hynix Inc
•
Filing: 1999-11-10
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Granted: —
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Expires: 2019-11-10
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Abstract

Abstract Translated from Japanese (57)【要約】 (修正有) 【課題】 半導体素子のコンタクト形成に際し、ストレ スによる素子の特性劣化やウェーハの歪曲及び熱処理工 程での窒化膜のクラック発生を防止する。 【解決手段】 所定の下部構造物を有する半導体基板5 1上に過シリコン酸化窒化膜57で成る食刻障壁層を形 成し、その上に層間絶縁膜を形成する。層間絶縁膜59 でコンタクトホールに予定されている部分63を露出す るための感光膜パターンを形成し、C−H−F系ガスによ る食刻選択比を利用して前記感光膜パターンの除去と、 選択的に除去された層間絶縁膜59をマスクに、過シリ コン酸化窒化膜57の露出部を除去して自己整列コンタ クトを形成する。 PROBLEM TO BE SOLVED: To prevent deterioration of device characteristics due to stress, distortion of a wafer, and generation of cracks in a nitride film in a heat treatment step when forming a contact of a semiconductor device. SOLUTION: A semiconductor substrate 5 having a predetermined lower structure 1, an etching barrier layer made of a persilicon oxynitride film 57 is formed, and an interlayer insulating film is formed thereon. Interlayer insulating film 59 Forming a photosensitive film pattern for exposing a portion 63 scheduled in the contact hole, removing the photosensitive film pattern using an etching selectivity with a C-H-F based gas, Using the selectively removed interlayer insulating film 59 as a mask, the exposed portion of the silicon oxynitride film 57 is removed to form a self-aligned contact.

Inventors

  • 👤 Seiko Kin
  • 👤 正浩 金
  • 👤 Zaigyoku Ryu
  • 👤 在玉 柳
  • 👤 Jishun Gu
  • 👤 滋春 具
  • 👤 Jin-Woong Kim
  • 👤 眞雄 金
  • 👤 Si Bum Kim
  • 👤 是範 金
  • 👤 Shuchin Go
  • 👤 秀珍 呉

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-07 23:39
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6921; H10P14/6922; H10P14/6927; H10D; H10D64/00; H10D64/01; H10D64/021; H10P14/65; H10P14/6516; H10P14/6518; H10P14/6519; H10P14/6522; H10P14/6529; H10P14/6532; H10P14/66; H10P14/668; H10P14/6681; H10P14/6682; H10W; H10W20/00; H10W20/01; H10W20/031; H10W20/069; H10W20/071; H10W20/074; H10W20/077; H10P14/63; H10P14/6326; H10P14/6328; H10P14/6334; H10P14/6336; H10P14/662; H10P14/69215; H10P14/694; H10P14/6943; H10P14/69433; H10P50/00; H10P50/20; H10P50/28; H10P50/282; H10P50/283

Claims Analysis

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References Cited (Backward Citations)

JPH0774170A Cited
JPH09205143A Cited
JPH09270461A Cited
JPH10214795A Cited

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