GB841405A - Aperture mask treatment to prevent cathode poisoning - Google Patents
Aperture mask treatment to prevent cathode poisoningInfo
- Publication number
- GB841405A GB841405A GB5567/58A GB556758A GB841405A GB 841405 A GB841405 A GB 841405A GB 5567/58 A GB5567/58 A GB 5567/58A GB 556758 A GB556758 A GB 556758A GB 841405 A GB841405 A GB 841405A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- feb
- hydrogen
- cathode ray
- aperture mask
- 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
- 231100000572 poisoning Toxicity 0.000 title abstract 2
- 230000000607 poisoning effect Effects 0.000 title abstract 2
- 239000011521 glass Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
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
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Surface Treatment Of Glass (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
841,405. Cathode ray tubes. CORNING GLASS WORKS. Feb. 20, 1958 [Feb. 25, 1957], No. 5567/58. Drawings to Specification. Class 39(1). [Also in Group XXIII] A perforate shadow mask, for selectively transmitting electron beams in a cathode ray tube and consisting of a thin sheet of glass having a plurality of substantially uniform perforations extending through the sheet, is subjected to a hydrogen-containing atmosphere at elevated temperatures to render the glass capable of bombardment with electrons without appreciable evolution of cathode poisoning gas, such as oxygen, during the life of the tube. The mask is fired in a reducing atmosphere containing at least 25% hydrogen, the remainder consisting of nitrogen. The temperature used will be of the order of 100C below the glass softening point. Specifications 699,897, 752,243 and U.S.A. Specification 2, 625, 734 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US642073A US2908838A (en) | 1957-02-25 | 1957-02-25 | Aperture mask treatment to prevent cathode poisoning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB841405A true GB841405A (en) | 1960-07-13 |
Family
ID=24575074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5567/58A Expired GB841405A (en) | 1957-02-25 | 1958-02-20 | Aperture mask treatment to prevent cathode poisoning |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2908838A (en) |
| BE (1) | BE565080A (en) |
| CH (1) | CH347225A (en) |
| DE (1) | DE1091674B (en) |
| FR (1) | FR1200214A (en) |
| GB (1) | GB841405A (en) |
| NL (1) | NL225220A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2166562A5 (en) * | 1971-12-30 | 1973-08-17 | Hitachi Ltd | |
| US4621214A (en) * | 1984-04-19 | 1986-11-04 | Rca Corporation | Color selection means having a charged insulator portion for a cathode-ray tube |
| US4622084A (en) * | 1985-01-29 | 1986-11-11 | Chang Kern K N | Method of sealing a mount in a cathode-ray tube |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2279168A (en) * | 1940-02-29 | 1942-04-07 | Westinghouse Electric & Mfg Co | Process for kovar-glass seals |
| FR955341A (en) * | 1941-12-31 | 1950-01-14 | ||
| US2392099A (en) * | 1943-07-29 | 1946-01-01 | Bell Telephone Labor Inc | Manufacture of glass sealed contact units |
| US2777084A (en) * | 1952-04-12 | 1957-01-08 | Gen Electric | Plastic electrode structure for electron tubes |
| US2805360A (en) * | 1954-10-08 | 1957-09-03 | Gen Dynamics Corp | Image storage apparatus |
-
0
- NL NL225220D patent/NL225220A/xx unknown
- BE BE565080D patent/BE565080A/xx unknown
-
1957
- 1957-02-25 US US642073A patent/US2908838A/en not_active Expired - Lifetime
-
1958
- 1958-02-20 GB GB5567/58A patent/GB841405A/en not_active Expired
- 1958-02-21 FR FR1200214D patent/FR1200214A/en not_active Expired
- 1958-02-22 DE DEC16351A patent/DE1091674B/en active Pending
- 1958-02-24 CH CH347225D patent/CH347225A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL225220A (en) | |
| US2908838A (en) | 1959-10-13 |
| FR1200214A (en) | 1959-12-18 |
| CH347225A (en) | 1960-06-30 |
| BE565080A (en) | |
| DE1091674B (en) | 1960-10-27 |
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