首页> 外国专利> Method for forming an improved gate member utilizing special masking and oxidation to eliminate projecting points on silicon islands

Method for forming an improved gate member utilizing special masking and oxidation to eliminate projecting points on silicon islands

机译:利用特殊的掩蔽和氧化形成消除硅岛上突出点的改进的栅极构件的方法

摘要

A novel process is described for forming a gate member for an SOS device wherein the objectionable point that appears at the top of the silicon island is removed. The point results when an anisotropic etch is utilized to form the island. The process includes first forming a relatively thick layer of CVD oxide around sides at the base portion of the island while the remainder of the sides of the island, including the objectionable point, remain exposed for further processing in order to remove the point. The point is then heavily oxidized to form a bird beak which bird beak joins the gate oxide with the CVD oxide to produce a rounded edge.
机译:描述了一种用于形成用于SOS器件的栅极构件的新颖工艺,其中去除了出现在硅岛顶部的有害点。当利用各向异性蚀刻形成岛时,产生该点。该工艺包括首先在岛的底部部分的侧面周围形成相对较厚的CVD氧化物层,而岛的侧面的其余部分(包括有害点)保持暴露以进行进一步处理以便去除该点。然后,该点被严重氧化以形成鸟嘴,该鸟嘴将栅极氧化物与CVD氧化物连接在一起以产生圆角。

著录项

  • 公开/公告号US4277884A

    专利类型

  • 公开/公告日1981-07-14

    原文格式PDF

  • 申请/专利权人 RCA CORPORATION;

    申请/专利号US19800174845

  • 发明设计人 SHENG T. HSU;

    申请日1980-08-04

  • 分类号H01L21/205;H01L21/84;

  • 国家 US

  • 入库时间 2022-08-22 14:45:07

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