GB949330A - Improvements in target electrodes and methods of manufacture - Google Patents
Improvements in target electrodes and methods of manufactureInfo
- Publication number
- GB949330A GB949330A GB17960/61A GB1796061A GB949330A GB 949330 A GB949330 A GB 949330A GB 17960/61 A GB17960/61 A GB 17960/61A GB 1796061 A GB1796061 A GB 1796061A GB 949330 A GB949330 A GB 949330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- target
- magnesium
- noble metal
- aluminium
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
- H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hybrid Cells (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
949,330. Cathode-ray tubes. GENERAL ELECTRIC CO. May 17, 1961 [May 19, 1960], No. 17960/61. Drawings to Specification. Heading H1D. A target for use in a television camera tube comprises a composite storage membrane supported solely at its periphery and having a thickness of between 500 and 1000 A, and consisting of a first layer of a homogeneous polycrystalline semi - conducting oxide having straight-through electron conductivity and high lateral resistance and a second layer of a material having high lateral resistance fused to the first layer. The first layer is preferably of magnesium oxide and the second layer is of aluminium oxide or a noble metal sub-divided into a myriad of discrete islets and constituting 0.5 to 10% of the overall thickness of the membrane which may be 750 A. The target may be manufactured by forming a vaporizable film of nitrocellulose across an annular support, evaporating a layer of aluminium or a noble metal such as gold on to this film and coating this layer with magnesium. Subsequent heating of the target in an oxidizing atmosphere vaporizes the nitrocellulose film, oxidizes the magnesium and either oxidizes the aluminium or coagulates the noble metal. The presence of the second layer causes the membrane to be extremely taut and the magnesium oxide to be fine grained. Also the second layer has a lower secondary sensitivity which is desirable for the electron gun side of the target.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30153A US3207937A (en) | 1960-05-19 | 1960-05-19 | Thin film storage electrode |
Publications (1)
Publication Number | Publication Date |
---|---|
GB949330A true GB949330A (en) | 1964-02-12 |
Family
ID=21852795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17960/61A Expired GB949330A (en) | 1960-05-19 | 1961-05-17 | Improvements in target electrodes and methods of manufacture |
Country Status (4)
Country | Link |
---|---|
US (1) | US3207937A (en) |
DE (1) | DE1189210B (en) |
GB (1) | GB949330A (en) |
NL (1) | NL265015A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3368093A (en) * | 1965-07-20 | 1968-02-06 | Hughes Aircraft Co | Storage tube with composite target consisting of display phosphor, porous dielectric and metallic membrane collector |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL290716A (en) * | 1962-03-28 | |||
GB1142748A (en) * | 1965-10-22 | 1969-02-12 | Hughes Aircraft Co | Cathode ray storage tubes |
US3458745A (en) * | 1967-06-09 | 1969-07-29 | Stanford Research Inst | Thin wafer-channel multiplier |
US3938242A (en) * | 1973-09-27 | 1976-02-17 | Rca Corporation | Fabrication of liquid crystal devices |
US5064369A (en) * | 1987-01-27 | 1991-11-12 | Tomy, Inc. | Orthodontic device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2527732A (en) * | 1946-02-07 | 1950-10-31 | Rateau Soc | Braking device for aircraft jet turbopropellers |
FR971152A (en) * | 1947-10-31 | 1951-01-15 | ||
USRE24070E (en) * | 1948-01-29 | 1955-10-04 | pierce | |
US2822493A (en) * | 1953-04-24 | 1958-02-04 | Maurice D Harsh | Graphechon storage tube |
US3002124A (en) * | 1956-04-09 | 1961-09-26 | Westinghouse Electric Corp | Display storage tube |
NL227247A (en) * | 1957-05-20 | |||
US2922907A (en) * | 1958-05-23 | 1960-01-26 | Gen Electric | Target electrode assembly |
US2947651A (en) * | 1958-09-23 | 1960-08-02 | Itt | Method of making storage electrode for charge storage tube |
-
0
- NL NL265015D patent/NL265015A/xx unknown
-
1960
- 1960-05-19 US US30153A patent/US3207937A/en not_active Expired - Lifetime
-
1961
- 1961-05-17 GB GB17960/61A patent/GB949330A/en not_active Expired
- 1961-05-18 DE DEG32309A patent/DE1189210B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3368093A (en) * | 1965-07-20 | 1968-02-06 | Hughes Aircraft Co | Storage tube with composite target consisting of display phosphor, porous dielectric and metallic membrane collector |
Also Published As
Publication number | Publication date |
---|---|
US3207937A (en) | 1965-09-21 |
NL265015A (en) | |
DE1189210B (en) | 1965-03-18 |
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