FR2183124B1 - - Google Patents

Info

Publication number
FR2183124B1
FR2183124B1 FR7315647A FR7315647A FR2183124B1 FR 2183124 B1 FR2183124 B1 FR 2183124B1 FR 7315647 A FR7315647 A FR 7315647A FR 7315647 A FR7315647 A FR 7315647A FR 2183124 B1 FR2183124 B1 FR 2183124B1
Authority
FR
France
Prior art keywords
microns
width
internal portion
thick
peripheral portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7315647A
Other languages
English (en)
French (fr)
Other versions
FR2183124A1 (enExample
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of FR2183124A1 publication Critical patent/FR2183124A1/fr
Application granted granted Critical
Publication of FR2183124B1 publication Critical patent/FR2183124B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H10W72/30—
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D99/00—Subject matter not provided for in other groups of this subclass
    • H10P50/692—
    • H10P50/695—
    • H10W20/484—
    • H10W74/131—
    • H10W72/01308—
    • H10W72/073—
    • H10W72/07311—
    • H10W72/07337—
    • H10W72/354—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/051—Etching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/085—Isolated-integrated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/135—Removal of substrate

Landscapes

  • Bipolar Transistors (AREA)
FR7315647A 1972-05-03 1973-05-02 Expired FR2183124B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24998172A 1972-05-03 1972-05-03

Publications (2)

Publication Number Publication Date
FR2183124A1 FR2183124A1 (enExample) 1973-12-14
FR2183124B1 true FR2183124B1 (enExample) 1976-09-10

Family

ID=22945819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7315647A Expired FR2183124B1 (enExample) 1972-05-03 1973-05-02

Country Status (4)

Country Link
US (1) US3769563A (enExample)
JP (1) JPS5242636B2 (enExample)
CA (1) CA975468A (enExample)
FR (1) FR2183124B1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868720A (en) * 1973-12-17 1975-02-25 Westinghouse Electric Corp High frequency bipolar transistor with integral thermally compensated degenerative feedback resistance
US3872494A (en) * 1974-02-08 1975-03-18 Westinghouse Electric Corp Field-contoured high speed, high voltage transistor
EP0262485A1 (de) * 1986-10-01 1988-04-06 BBC Brown Boveri AG Halbleiterbauelement mit einer Ätzgrube
JPH03501312A (ja) * 1988-08-31 1991-03-22 サンタ・バーバラ・リサーチ・センター 薄いシリコン装置の両側からの製造のための処理方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1205168A (fr) * 1957-12-11 1960-02-01 Westinghouse Electric Corp Transistors de puissance et procédé de fabrication
US3088888A (en) * 1959-03-31 1963-05-07 Ibm Methods of etching a semiconductor device
NL252974A (enExample) * 1959-07-24
US3322581A (en) * 1965-10-24 1967-05-30 Texas Instruments Inc Fabrication of a metal base transistor

Also Published As

Publication number Publication date
JPS4949578A (enExample) 1974-05-14
JPS5242636B2 (enExample) 1977-10-25
FR2183124A1 (enExample) 1973-12-14
US3769563A (en) 1973-10-30
CA975468A (en) 1975-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse