← Back to Patent Explorer
JPH0897232A Expired / Lapsed JP ⏱️ 0.0 years remaining

Method for manufacturing semiconductor device

Assignee: NEC Corp
•
Filing: 1994-09-29
•
Granted: —
•
Expires: 2014-09-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】リセス幅を広げたショットキ障壁ゲート型FE Tを形成し、ゲート耐圧を向上させ、且つ、ゲート・ド レイン間容量の低減により高周波特性を向上させる。 【構成】n型GaAs層3の上に形成した酸化シリコン 膜4に設けた開口部に露出したn型GaAs層3の面に 不活性ガスでプラズマ照射しダメージ層6を形成した 後、開口部の側壁に側壁スペーサを形成し酸化シリコン 膜および側壁スペーサをマスクとしてダメージ層6をn 型GaAs層3を等方性エッチングし浅いリセス深さで ありながらリセス幅の広いリセス8を形成する。 (57) [Abstract] [Purpose] Schottky barrier gate type FE with wider recess width By forming T, the gate breakdown voltage is improved, and the high frequency characteristics are improved by reducing the gate-drain capacitance. [Structure] The surface of the n-type GaAs layer 3 exposed in the opening provided in the silicon oxide film 4 formed on the n-type GaAs layer 3 is plasma-irradiated with an inert gas to form a damage layer 6, and then the opening is formed. Side wall spacers are formed on the side walls of the silicon oxide film and the side wall spacers are used as masks to form the damage layer 6 in The type GaAs layer 3 is isotropically etched to form a recess 8 having a shallow recess depth but a wide recess width.

Inventors

  • 👤 Yoichi Oikawa
  • 👤 洋一 及川

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 23:44
CPC Classifications
—

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

JPS57204175A Cited
JPS59119765A Cited
JPS59205765A Cited
JPH047846A Cited
JPH05190578A Cited
JPH06163596A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag