US2877392A - Semi-conductor device - Google Patents
Semi-conductor device Download PDFInfo
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- US2877392A US2877392A US473674A US47367454A US2877392A US 2877392 A US2877392 A US 2877392A US 473674 A US473674 A US 473674A US 47367454 A US47367454 A US 47367454A US 2877392 A US2877392 A US 2877392A
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- envelope
- heat
- conductive body
- sealed
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- Expired - Lifetime
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- 239000004065 semiconductor Substances 0.000 title description 9
- 239000004020 conductor Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 17
- 239000011521 glass Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000001747 exhibiting effect Effects 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- -1 for example Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011345 viscous material Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- BAVMXDNHWGQCSR-UHFFFAOYSA-N 1-[2-(2,3-dimethylphenyl)ethyl]-2,3-dimethylbenzene Chemical group CC1=CC=CC(CCC=2C(=C(C)C=CC=2)C)=C1C BAVMXDNHWGQCSR-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000012494 Quartz wool Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940024548 aluminum oxide Drugs 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/16—Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4918—Disposition being disposed on at least two different sides of the body, e.g. dual array
Definitions
- This invention relates to semi-conductor devices comprising at least one semi-conductive member. In particular, it relates to a crystal diode or a transistor in a.
- seals of the conductors since the said member is unable to withstand high temperatures.
- the present invention has inter alia for its purpose to avoid undue heating of the semi conductive member during the sealing operation.
- the invention furthermore permits the heat, evolved in the member by the passage of current, to be more readily dissipated to the outside.
- the space within the envelope exhibits at least two parts whereof the part surrounding a semi-conductive member has a lower specificvresistance (higher heat conductivity) to heat fiow than the part contiguous with a seal.
- the first-mentioned part of low specific resistance to heat flow may, for example, consist of fills known per se, which are provided in the fluid state and hardened later, or of viscous fills or pulverulent materials. Several examples will be given later. i
- the electrode system may be embedded, if desired prior to introducing it into the envelope, in hardenable material. Subsequently it is introduced into the envelope and, if desired, any spaces remaining filled up.
- the last-mentioned part contiguous with the seal may either be vacuum or a gas fill.
- solid materials such as, for example, glass wool or quartz wool are serviceable as well as powdery materials of poor heat conductivity.
- the said diflerence'in resistance to heat flow results in that the heat required for the sealing operation penetrates only with difiiculty to that part of the envelope where the semi-conductive member is located. Moreover, any heat evolved in the said part can easily be carried ofiF, for example by holding the said part in. a cooling clamp.
- Fig. 1 is a sectional view of a transistor during the sealing operation.
- Fig. 2 is a sectional view of a crystal diode prior to sealing.
- Fig. 3 shows this crystal diode after sealing.
- Fig. 4 is a sectional view of a so-called duo-diode.
- Figures 5, 8 and 9 are sectional views of transistors and Figures diode.
- the envelope of the electrode system shown in Fig. 1 comprises a glass tube 1 which is closed at one end with a cover 2 in which three conductors 3 are sealed, which conductors carry an electrode system 4.
- a so-called alloy transistor is involved, which comprises a semi-conductive member with two fused electrodes (not Separately indicated).
- the lower end of the tube contains a fill 5, for example silicone grease. This fill may be viscousso as to permit the electrode system to be pressed into it, while the fill invariably maintains its initial position.
- the tube 1 is held in a holder or tongs 6 made from metal of good heat conductivity and subsequently the edges of the envelope and of the cover are locally heated to their melting point, as indicated schematically by burners 7, and the cover 2 thus hermetically-sealed to the envelope 1.
- the said parts will be heated electrically, either by means of a heater coil or inductively.
- Fig. 2 which is particularly suitable for diodes, comprises a glass tube 10 which is The ends are narrowed with regard to the central part of the tube, but at least one opening permits the passage of an electrode system 12. After arranging the system in position, a viscous fill 13 is provided'at the centre of the tube by means of a hollow needle. Subsequently the ends are sealed off, during which treatment the tube is held at its centre in tongs carrying olfthe heat (Fig. 3).
- Fig. 5 also shows a transistor.
- the fill 20 within that part of the envelope which surrounds the semi-c0nduc tive member is a powder of good heat conductivity (low specific resistance to heat flow), for example quartz powder.
- metal powder such as,
- copper or aluminum powder may be used,
- heat-insulating powder such as, for example, aluminumoxide is chosen.
- asbestos may be used.
- This fill 22 mainly serves to hold the fill 20 in place.
- Figs. 6 and 7 show electrode systems.
- the semi-conductive member with the electrodes is first embedded in hardenable material such as, for example, a drop of polystyrene 30 (Fig. 6).
- the assembly can easily be handled and arranged in an envelope 10, the space surrounding the semi-conductive member 12 being filled up with a preferably viscous fill-31 (Fig. 7). Subsequently the envelope is sealed similarly to Fig. 3.
- ethoxyline resins commercially available as Araldit and furthermore polyisobutylene.
- Suitable viscous fills are polymethylsiloxanes commercially known as silicone grease.
- a material of this type is commercially sold under the tradename Dow-Corning DC7.
- the use of viscous materials reduces the risk of cracking of the glass due to stresses.
- the said type of materials have the advantage of very low vapour pressure.
- Suitable powdery materials having a low resistance to heat flow are, for example, metal powders, but also a different way of forming suchquartz which may In most cases, the envelope may consist of glass. If
- the envelope consistsof a metal tube 49 which is closed at its bottom end and to which a glass tube 41 is sealed. After introducing the semiconductive member 4 with electrodes and supply conductors 3, the latter are sealed into the glass tube 41,
- the envelope again consists of a metal tube 40 which is closed at its bottom end and at the top of which a glass cover ence between the tube and the cover is promoted by the use of enamel having a low melting point.
- a semi-conductor device comprising a relatively small semi-conductive body, a relatively large gas-tight envelope enclosing said semi-conductive body and spaced therefrom, at least one electric conductor extending through said envelope and coupled to said semi-conductive body and heat-sealed into position at one end of said envelope, and a material exhibiting relatively high heat conductivity surrounding the semi-conductive body and filling up the space between the semi-conductor body and the envelope but spaced from the end of said envelope in which the electric conductor is heat-sealed, the space between the end of said envelope in which the electric conductor is heat-sealed and the said high heat conductivity material exhibiting relatively low heat conductivity, whereby heat dissipation of the device during operation is improved, and heat-sealing of the envelope does not detrimentally affect the semi-conductive body.
- a semi-conductor device comprising a relatively 42 is sealed.
- the adhersmall semi-conductive body,- a relatively large gas-tight glass envelope enclosing said semi-conductive body and spaced therefrom, at least one electric lead-in conductor heat-sealed in and through one end of said glass envelope and coupled to said'semi-conductive body, and a viscous material exhibiting relativelyhighheat conductivity surrounding the semi-conductive body and filling up the space between envelope but spaced from the end of said envelope-in which the electric conductor is heat-sealed, the space between the end of said envelope in which the electric conductor is heat-sealed and the said high heat conductivity material being vacant, whereby heat dissipation of the device during operation is improved, and heat-sealing of the envelope does not 'detrimentally affect the semiconductive body.
- a semi-conductor device comprising a relatively small semi-conductive body, a relatively large gas-tight metal envelope enclosing said semi-conductive body-and spaced therefrom and having a glass-end, at least one electric conductor heat-sealed in and'through -said glass end of said envelope and coupled to said semi-conductive body, and a material exhibiting relatively high heat conductivity surrounding the semi-conductive body and filling up the space between the semi-conductive body and the envelope but in which the electric conductor is heat-sealed, the. space between the end of said envelope in which.
- the electric conductor is heat-sealed and the said high heat conductivity material being vacant, whereby heat, dissipation of the device during operation is improved, and heatsealing of the envelope does not detrimentally afiecttthe semi-conductive body.
- a semi-conductor device comprising a relatively small. semi-conductive body, a relatively.largergas-tight envelope enclosing said semi-conductive body and spaced therefrom, at least one, electric lead-in conductor. extending through said envelope and'coupled to said semiconductive body and heat-sealed into position at one end of said.
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- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Resistance Heating (AREA)
- Joining Of Glass To Other Materials (AREA)
- Led Device Packages (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
March 1959 A. A. A. M. KOYETS ETAL 2,877,392
SEMI-CONDUCTOR DEVICE Filed Dec. 7, 1954 INVENTORS NTONIUS MARIA KOETS VESSEM US ALOYSIUS A ENRAAD V MUS ANTO AUGUS JAN VERS WILHEL AGENT United States PatentO I SEMI-CONDUCTOR DEVICE Augustinus Aloysius Antonius Maria Koets, Jan Coenraad van Vessem, and Wilhelmus Antonius Roovers, Eindhoven, Netherlands, assignors, by mesne assignments, to North American. Philips Company, Inc., New York, N. Y., a corporation of Delaware Application December 7, 1954, SerialNo. 473,674
Claims priority, application Netherlands December 12, 1953 7 Claims. (Cl. 317-234 This invention relates to semi-conductor devices comprising at least one semi-conductive member. In particular, it relates to a crystal diode or a transistor in a.
. open at both ends.
or seals of the conductors, hereinafter briefly termed" seals, since the said member is unable to withstand high temperatures. The present invention has inter alia for its purpose to avoid undue heating of the semi conductive member during the sealing operation. The invention furthermore permits the heat, evolved in the member by the passage of current, to be more readily dissipated to the outside.-
In accordance with the invention, the space within the envelope exhibits at least two parts whereof the part surrounding a semi-conductive member has a lower specificvresistance (higher heat conductivity) to heat fiow than the part contiguous with a seal.
The first-mentioned part of low specific resistance to heat flow may, for example, consist of fills known per se, which are provided in the fluid state and hardened later, or of viscous fills or pulverulent materials. Several examples will be given later. i
The electrode system may be embedded, if desired prior to introducing it into the envelope, in hardenable material. Subsequently it is introduced into the envelope and, if desired, any spaces remaining filled up.
The last-mentioned part contiguous with the seal may either be vacuum or a gas fill. Alternatively, solid materials such as, for example, glass wool or quartz wool are serviceable as well as powdery materials of poor heat conductivity.
The said diflerence'in resistance to heat flow results in that the heat required for the sealing operation penetrates only with difiiculty to that part of the envelope where the semi-conductive member is located. Moreover, any heat evolved in the said part can easily be carried ofiF, for example by holding the said part in. a cooling clamp.
In order that the invention may readily be carried into elfect it will now be described, by way of example, with reference to the accompanying drawing showing several embodiments thereof and in which Fig. 1 is a sectional view of a transistor during the sealing operation.
Fig. 2 is a sectional view of a crystal diode prior to sealing.
Fig. 3 shows this crystal diode after sealing.
Fig. 4 is a sectional view of a so-called duo-diode.
Figures 5, 8 and 9 are sectional views of transistors and Figures diode.
6 and 7 show two manufacturing phases of a The envelope of the electrode system shown in Fig. 1 comprises a glass tube 1 which is closed at one end with a cover 2 in which three conductors 3 are sealed, which conductors carry an electrode system 4. In this case a so-called alloy transistor is involved, which comprises a semi-conductive member with two fused electrodes (not Separately indicated). The lower end of the tube contains a fill 5, for example silicone grease. This fill may be viscousso as to permit the electrode system to be pressed into it, while the fill invariably maintains its initial position.
After arranging the parts in the position shown in the drawing, the tube 1 is held in a holder or tongs 6 made from metal of good heat conductivity and subsequently the edges of the envelope and of the cover are locally heated to their melting point, as indicated schematically by burners 7, and the cover 2 thus hermetically-sealed to the envelope 1. Preferably, however, the said parts will be heated electrically, either by means of a heater coil or inductively.
The construction shown in Fig. 2, which is particularly suitable for diodes, comprises a glass tube 10 which is The ends are narrowed with regard to the central part of the tube, but at least one opening permits the passage of an electrode system 12. After arranging the system in position, a viscous fill 13 is provided'at the centre of the tube by means of a hollow needle. Subsequently the ends are sealed off, during which treatment the tube is held at its centre in tongs carrying olfthe heat (Fig. 3).
In the same way a duo-diode with centre tap 15 can be made (Fig. 4).
Fig. 5 also shows a transistor. The fill 20 within that part of the envelope which surrounds the semi-c0nduc tive member is a powder of good heat conductivity (low specific resistance to heat flow), for example quartz powder. Alternatively, metal powder such as,
for example, copper or aluminum powder may be used,
but in this case the electrode system and the lower ends of the conductors 3 require to be covered with an insulating layer 21.
For the fill 22 of the upper part of the envelope adjacent the seal, heat-insulating powder (high specific resistance to heat flow) such as, for example, aluminumoxide is chosen. As an alternative, asbestos may be used. This fill 22 mainly serves to hold the fill 20 in place. These fills have the advantage, provided they have been thoroughly cleaned beforehand, that they do not give ofi' any materials adversely affecting the electrode system.
Figs. 6 and 7 show electrode systems. In this instance, the semi-conductive member with the electrodes is first embedded in hardenable material such as, for example, a drop of polystyrene 30 (Fig. 6). The assembly can easily be handled and arranged in an envelope 10, the space surrounding the semi-conductive member 12 being filled up with a preferably viscous fill-31 (Fig. 7). Subsequently the envelope is sealed similarly to Fig. 3.
With regard to the fills the following is to be noted.
As hardenable materials it is advantageous to use ethoxyline resins, commercially available as Araldit and furthermore polyisobutylene.
Suitable viscous fills are polymethylsiloxanes commercially known as silicone grease. A material of this type is commercially sold under the tradename Dow-Corning DC7. The use of viscous materials reduces the risk of cracking of the glass due to stresses. Moreover, the said type of materials have the advantage of very low vapour pressure.
Suitable powdery materials having a low resistance to heat flow are, for example, metal powders, but also a different way of forming suchquartz which may In most cases, the envelope may consist of glass. If
stringent requirements are imposed on the dissipationof heat of the semi-conductivemember, it is alsopossible to make the envelope from metal where it surrounds the semi-conductive member, the remainder consisting of glass.
Two examples-of such electrodesystems are shown in Figures 8 and 9.
In the first example, the envelope consistsof a metal tube 49 which is closed at its bottom end and to which a glass tube 41 is sealed. After introducing the semiconductive member 4 with electrodes and supply conductors 3, the latter are sealed into the glass tube 41,
thus forming a pinch as in incandescent lamps.
In the second example, the envelope again consists of a metal tube 40 which is closed at its bottom end and at the top of which a glass cover ence between the tube and the cover is promoted by the use of enamel having a low melting point.
What is claimed is:
l. A semi-conductor device comprising a relatively small semi-conductive body, a relatively large gas-tight envelope enclosing said semi-conductive body and spaced therefrom, at least one electric conductor extending through said envelope and coupled to said semi-conductive body and heat-sealed into position at one end of said envelope, and a material exhibiting relatively high heat conductivity surrounding the semi-conductive body and filling up the space between the semi-conductor body and the envelope but spaced from the end of said envelope in which the electric conductor is heat-sealed, the space between the end of said envelope in which the electric conductor is heat-sealed and the said high heat conductivity material exhibiting relatively low heat conductivity, whereby heat dissipation of the device during operation is improved, and heat-sealing of the envelope does not detrimentally affect the semi-conductive body.
2. A device as set forth in claim 1 wherein the material is an ethoxylene resin, and the semi-conductive body is embedded in said resin.
3. A device as set forth'in claim 1 wherein the material is a polymethylsiloxane, and the semi-conductive body is embedded in said polymethylsiloxane.
4. A device as set forth in claim 1 wherein the material includes a hardened portion and a viscous portion, said semi-conductive body being embedded in said hardened portion and the latter being embedded in said viscous material.
5. A semi-conductor device comprising a relatively 42 is sealed. The adhersmall semi-conductive body,- a relatively large gas-tight glass envelope enclosing said semi-conductive body and spaced therefrom, at least one electric lead-in conductor heat-sealed in and through one end of said glass envelope and coupled to said'semi-conductive body, and a viscous material exhibiting relativelyhighheat conductivity surrounding the semi-conductive body and filling up the space between envelope but spaced from the end of said envelope-in which the electric conductor is heat-sealed, the space between the end of said envelope in which the electric conductor is heat-sealed and the said high heat conductivity material being vacant, whereby heat dissipation of the device during operation is improved, and heat-sealing of the envelope does not 'detrimentally affect the semiconductive body.
6. A semi-conductor device comprising a relatively small semi-conductive body, a relatively large gas-tight metal envelope enclosing said semi-conductive body-and spaced therefrom and having a glass-end, at least one electric conductor heat-sealed in and'through -said glass end of said envelope and coupled to said semi-conductive body, and a material exhibiting relatively high heat conductivity surrounding the semi-conductive body and filling up the space between the semi-conductive body and the envelope but in which the electric conductor is heat-sealed, the. space between the end of said envelope in which. the electric conductor is heat-sealed and the said high heat conductivity material being vacant, whereby heat, dissipation of the device during operation is improved, and heatsealing of the envelope does not detrimentally afiecttthe semi-conductive body.
7. A semi-conductor device comprising a relatively small. semi-conductive body, a relatively.largergas-tight envelope enclosing said semi-conductive body and spaced therefrom, at least one, electric lead-in conductor. extending through said envelope and'coupled to said semiconductive body and heat-sealed into position at one end of said. envelope, and a mass of metal particles exhibiting relatively high heat conductivity surrounding the semi-conductive body and filling up the space between the semi-conductive body and theenvelope but spaced from the end of said envelope in whichthe electric conductor is heat-sealed, the space between the end of said envelope in which the electric conductor is heat-sealed and the said mass of metal particles exhibiting relatively low heat conductivity, whereby heat dissipation of the device. during operation is improved, and heat-sealing of the, envelope does not detrimentally aflect the semi conductive body.
References Cited in the file of thispatent; UNITED STATES PATENTS 756,676 Midgley Apr. 5, 1904 1,782,129 Andre Nov. 18, 1930. 2,406,405 Salisbury Aug. 27, 1946 2,697,805 Collins Dec. 21, 1954 2,699,594 Bowne Jan. 18, 1955 the semi-conductive body and'the spaced from the end of said'envelope'
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL183554 | 1953-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2877392A true US2877392A (en) | 1959-03-10 |
Family
ID=19750636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US473674A Expired - Lifetime US2877392A (en) | 1953-12-12 | 1954-12-07 | Semi-conductor device |
Country Status (8)
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---|---|
US (1) | US2877392A (en) |
BE (1) | BE534031A (en) |
CH (1) | CH329187A (en) |
DE (1) | DE1033783B (en) |
ES (1) | ES218906A1 (en) |
FR (1) | FR1115837A (en) |
GB (1) | GB800574A (en) |
NL (1) | NL87748C (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2998556A (en) * | 1958-03-04 | 1961-08-29 | Philips Corp | Semi-conductor device |
US3181229A (en) * | 1962-01-08 | 1965-05-04 | Mallory & Co Inc P R | Hermetically sealed semiconductor device and method for producing it |
US3243670A (en) * | 1963-09-30 | 1966-03-29 | Int Standard Electric Corp | Mountings for semiconductor devices |
US3284678A (en) * | 1962-11-09 | 1966-11-08 | Philco Corp | Semiconductor encapsulating and reinforcing materials utilizing boron nitride |
DE1274737B (en) * | 1962-07-27 | 1968-08-08 | Itt Ind Ges Mit Beschraenkter | Electric semiconductor device |
US4042955A (en) * | 1973-06-22 | 1977-08-16 | Nippondenso Co., Ltd. | Resin-sealed electrical device |
US4214885A (en) * | 1978-03-01 | 1980-07-29 | Hideo Nishi | Method for producing miniature lamps |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2937110A (en) * | 1958-07-17 | 1960-05-17 | Westinghouse Electric Corp | Protective treatment for semiconductor devices |
US2985806A (en) * | 1958-12-24 | 1961-05-23 | Philco Corp | Semiconductor fabrication |
DE1184017B (en) * | 1961-03-10 | 1964-12-23 | Intermetall | Method for producing silicone resin coatings that protect the pn junctions in semiconductor arrangements |
DE1244963B (en) * | 1963-01-09 | 1967-07-20 | Siemens Ag | Semiconductor valve encapsulated or pressed with a plastic cover |
DE8909244U1 (en) * | 1989-07-31 | 1989-09-21 | Siemens AG, 1000 Berlin und 8000 München | Semiconductor component |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US756676A (en) * | 1902-11-10 | 1904-04-05 | Internat Wireless Telegraph Company | Wave-responsive device. |
US1782129A (en) * | 1924-12-26 | 1930-11-18 | Andre Henri Georges | Unilateral conductor for rectifying alternating current |
US2406405A (en) * | 1941-05-19 | 1946-08-27 | Sperry Gyroscope Co Inc | Coaxial condenser crystal and method of making same |
US2697805A (en) * | 1949-02-05 | 1954-12-21 | Sylvania Electric Prod | Point contact rectifier |
US2699594A (en) * | 1952-02-27 | 1955-01-18 | Sylvania Electric Prod | Method of assembling semiconductor units |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE307647C (en) * | ||||
BE454977A (en) * | 1943-04-05 |
-
0
- NL NL87748D patent/NL87748C/xx active
- BE BE534031D patent/BE534031A/xx unknown
-
1954
- 1954-12-07 US US473674A patent/US2877392A/en not_active Expired - Lifetime
- 1954-12-09 DE DEN9878A patent/DE1033783B/en active Pending
- 1954-12-09 ES ES0218906A patent/ES218906A1/en not_active Expired
- 1954-12-09 GB GB35678/54A patent/GB800574A/en not_active Expired
- 1954-12-10 CH CH329187D patent/CH329187A/en unknown
- 1954-12-10 FR FR1115837D patent/FR1115837A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US756676A (en) * | 1902-11-10 | 1904-04-05 | Internat Wireless Telegraph Company | Wave-responsive device. |
US1782129A (en) * | 1924-12-26 | 1930-11-18 | Andre Henri Georges | Unilateral conductor for rectifying alternating current |
US2406405A (en) * | 1941-05-19 | 1946-08-27 | Sperry Gyroscope Co Inc | Coaxial condenser crystal and method of making same |
US2697805A (en) * | 1949-02-05 | 1954-12-21 | Sylvania Electric Prod | Point contact rectifier |
US2699594A (en) * | 1952-02-27 | 1955-01-18 | Sylvania Electric Prod | Method of assembling semiconductor units |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2998556A (en) * | 1958-03-04 | 1961-08-29 | Philips Corp | Semi-conductor device |
US3181229A (en) * | 1962-01-08 | 1965-05-04 | Mallory & Co Inc P R | Hermetically sealed semiconductor device and method for producing it |
DE1274737B (en) * | 1962-07-27 | 1968-08-08 | Itt Ind Ges Mit Beschraenkter | Electric semiconductor device |
US3284678A (en) * | 1962-11-09 | 1966-11-08 | Philco Corp | Semiconductor encapsulating and reinforcing materials utilizing boron nitride |
US3243670A (en) * | 1963-09-30 | 1966-03-29 | Int Standard Electric Corp | Mountings for semiconductor devices |
US4042955A (en) * | 1973-06-22 | 1977-08-16 | Nippondenso Co., Ltd. | Resin-sealed electrical device |
US4214885A (en) * | 1978-03-01 | 1980-07-29 | Hideo Nishi | Method for producing miniature lamps |
Also Published As
Publication number | Publication date |
---|---|
FR1115837A (en) | 1956-04-30 |
ES218906A1 (en) | 1955-12-16 |
CH329187A (en) | 1958-04-15 |
BE534031A (en) | |
GB800574A (en) | 1958-08-27 |
NL87748C (en) | |
DE1033783B (en) | 1958-07-10 |
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