GB921947A - Semiconductor device - Google Patents

Semiconductor device

Info

Publication number
GB921947A
GB921947A GB1503161A GB1503161A GB921947A GB 921947 A GB921947 A GB 921947A GB 1503161 A GB1503161 A GB 1503161A GB 1503161 A GB1503161 A GB 1503161A GB 921947 A GB921947 A GB 921947A
Authority
GB
United Kingdom
Prior art keywords
groove
die
source
semi
electrodes
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
GB1503161A
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.)
CBS 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 GB921947A publication Critical patent/GB921947A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/482Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

921,947. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. April 26, 1961 [May 2, 1960], No. 15031/61. Class 37. A field effect transistor has the gate electrode in the form of a strip of material disposed at the bottom of a groove in the semi-conductor wafer. An N-type silicon semi-conductor die before the formation of the gate electrodes is shown in Fig. 2, the dimensions of the cuboid containing it being 50 X 120 x 25 mils. A groove 20 is etched into the die to a depth of 1 mil. and a width of 5 mil. In addition end 18 is etched to a taper. A number of these prepared discs are inserted in a groove 38 in a graphite boat 30. A stainless steel lid 40 with a narrow groove 42 is placed in the boat and aluminium is vaporized so as to deposit the gate electrode 22 (Fig. 3) and then the gate electrode 24 on the lower face of the die. After vapour deposition of the two electrodes they are alloyed into the silicon die in a resistance furnace flushed with hydrogen, helium or argon. A temperature of 950‹ C. for a quarter to two hours is suggested. The tapered end of the device causes the two regions to join so that a single electrode only is necessary for the gate connection. Ohmic contacts are fused to the upper surfaces of the die to connect the source and drain electrodes. These may be N-type material, for example antimony, arsenic or phosphorous or an alloy of gold and an N- type doping material. Fig. 12 shows a device 100 mounted on a metallic base disc 202 for example steel, aluminium or copper on a stud 204. The transistor is soldered with its source and drain electrodes downwards to the metallized surface of a ceramic disc 206. A central groove in the metallized surface prevents shortcircuiting of the source to the drain. A single gate connection 208 only is necessary and this with the source and drain connections 210, 212 are lead to contact posts which pass through glass-to-metal seals 220. Resinous coatings may be applied to the device and a cap brazed, welded or soldered in position to provide an hermetically sealed enclosure. Fig. 13 shows a circular device one of the gate electrodes being at the bottom of a groove 322 between annular source and drain electrodes 360, 362. The whole of the bottom face of the device is a further gate electrode 324. The Specification refers to the use of other semi-conductors in silicon, namely germanium, silicon carbide and Group III-V compounds. The use of boron in indium is also referred to for doping.
GB1503161A 1960-05-02 1961-04-26 Semiconductor device Expired GB921947A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2600660A 1960-05-02 1960-05-02

Publications (1)

Publication Number Publication Date
GB921947A true GB921947A (en) 1963-03-27

Family

ID=21829305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1503161A Expired GB921947A (en) 1960-05-02 1961-04-26 Semiconductor device

Country Status (2)

Country Link
DE (1) DE1209213B (en)
GB (1) GB921947A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254280A (en) * 1963-05-29 1966-05-31 Westinghouse Electric Corp Silicon carbide unipolar transistor
US3328601A (en) * 1964-04-06 1967-06-27 Northern Electric Co Distributed field effect devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1900018A (en) * 1928-03-28 1933-03-07 Lilienfeld Julius Edgar Device for controlling electric current
NL83838C (en) * 1952-12-01 1957-01-15
US2805347A (en) * 1954-05-27 1957-09-03 Bell Telephone Labor Inc Semiconductive devices
FR69676E (en) * 1955-10-06 1958-11-18 Improvements to some magnetic toys
GB856430A (en) * 1956-12-13 1960-12-14 Mullard Ltd Improvements in and relating to semi-conductive devices
GB820252A (en) * 1957-10-04 1959-09-16 Standard Telephones Cables Ltd Semiconductor device
FR1202426A (en) * 1958-07-16 1960-01-11 Csf Improvements to field-effect transistors
FR1210880A (en) * 1958-08-29 1960-03-11 Improvements to field-effect transistors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254280A (en) * 1963-05-29 1966-05-31 Westinghouse Electric Corp Silicon carbide unipolar transistor
US3328601A (en) * 1964-04-06 1967-06-27 Northern Electric Co Distributed field effect devices

Also Published As

Publication number Publication date
DE1209213B (en) 1966-01-20

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