JPS60125747U - capacitor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来のコンデンサを説明する断面図、第２図は
本考案のコンデンサを説明する断面図である。 主な図番の説明、１１は半導体基板、１２はエピタキシ
ャル層、１４は島領域、１６は第１拡散領域、１７は第
２拡散領域、２２は電極層である。FIG. 1 is a sectional view illustrating a conventional capacitor, and FIG. 2 is a sectional view illustrating a capacitor according to the present invention. Explanation of main figure numbers: 11 is a semiconductor substrate, 12 is an epitaxial layer, 14 is an island region, 16 is a first diffusion region, 17 is a second diffusion region, and 22 is an electrode layer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一導電型の半導体基板と該基板上に設けた逆導電型のエ
ピタキシャル層と該エピタキシャル層をＰＮ分離して設
けた島領域と該島領域表面に形成した一導電型の第１拡
散領域と該第１拡散領域表面に形成された逆導電型の第
２拡散領域とを備え前記第１および第２拡散領域とで形
成されるＰＮ接合を逆バイアスして成るコンデンサに於
いて、前記ＰＮ接合上の絶縁膜に低電位あるいは接地電
位にバイアスされた電極層を設けることを特徴とするコ
ンデンサ。A semiconductor substrate of one conductivity type, an epitaxial layer of the opposite conductivity type provided on the substrate, an island region provided by separating the epitaxial layer in PN, a first diffusion region of one conductivity type formed on the surface of the island region, a second diffusion region of opposite conductivity type formed on a surface of the first diffusion region, and a PN junction formed by the first and second diffusion regions is reverse-biased. A capacitor characterized in that an electrode layer biased to a low potential or a ground potential is provided on an insulating film of the capacitor.