GB1254666A - Electrically-shielded readout device - Google Patents
Electrically-shielded readout deviceInfo
- Publication number
- GB1254666A GB1254666A GB22034/70A GB2203470A GB1254666A GB 1254666 A GB1254666 A GB 1254666A GB 22034/70 A GB22034/70 A GB 22034/70A GB 2203470 A GB2203470 A GB 2203470A GB 1254666 A GB1254666 A GB 1254666A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- display
- electrically
- envelope
- readout device
- 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
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
1,254,666. Cathode-ray display tubes. WAGNER ELECTRIC CORP. 7 May, 1970 [23 May, 1969], No. 22034/70. Heading H1D. A display device which includes anode display elements 16A-16G and a thermo-emissive cathode 14A, 14B inside an envelope 12 comprises an electrically shielding layer 26 disposed around a portion of the envelope. The layer 26 is connected through spring contacts 28 and a switch 36 either to earth when the layer functions as a shield or to a negative potential when the layer blanks out the display by preventing electrons from reaching the anodes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82733769A | 1969-05-23 | 1969-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1254666A true GB1254666A (en) | 1971-11-24 |
Family
ID=25248953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22034/70A Expired GB1254666A (en) | 1969-05-23 | 1970-05-07 | Electrically-shielded readout device |
Country Status (4)
Country | Link |
---|---|
US (1) | US3584252A (en) |
DE (1) | DE2021767A1 (en) |
FR (1) | FR2048654A5 (en) |
GB (1) | GB1254666A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3780326A (en) * | 1971-08-25 | 1973-12-18 | Wagner Electric Corp | Symbol display tube with auxiliary electrode |
US3716899A (en) * | 1971-10-13 | 1973-02-20 | Sylvania Electric Prod | Vacuum tube readout device having ruggedized internal electrode structure and method of making same |
US4004186A (en) * | 1975-12-01 | 1977-01-18 | Texas Instruments Incorporated | Vacuum fluorescent display having a grid plate coplanar with the anode |
US4302706A (en) * | 1978-06-22 | 1981-11-24 | Wagner Electric Corporation | Glass-to-glass sealing method with conductive layer |
US4754199A (en) * | 1987-03-04 | 1988-06-28 | Parker William P | Self contained gas discharge display device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB234906A (en) * | 1924-03-06 | 1925-06-08 | Percie Vaughan Castell Evans | Improved method of constructing therimonic valves |
US1583414A (en) * | 1925-10-31 | 1926-05-04 | Gill Ernest Walter Brudenell | Vacuum-tube shield |
US2307027A (en) * | 1940-05-10 | 1943-01-05 | Davie | Shielded radio tube |
US2343630A (en) * | 1942-04-25 | 1944-03-07 | Du Mont Allen B Lab Inc | Shield for cathode ray tubes |
US2420311A (en) * | 1945-02-10 | 1947-05-13 | Raytheon Mfg Co | Conductive shield for external press type electron discharge tubes |
US3062980A (en) * | 1959-04-28 | 1962-11-06 | Ass Elect Ind | Thermionic valves |
US3508101A (en) * | 1967-03-27 | 1970-04-21 | Ise Electronics Corp | Character indicating electron tube |
-
1969
- 1969-05-23 US US827337A patent/US3584252A/en not_active Expired - Lifetime
-
1970
- 1970-05-04 DE DE19702021767 patent/DE2021767A1/en active Pending
- 1970-05-07 GB GB22034/70A patent/GB1254666A/en not_active Expired
- 1970-05-21 FR FR7018587A patent/FR2048654A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3584252A (en) | 1971-06-08 |
FR2048654A5 (en) | 1971-03-19 |
DE2021767A1 (en) | 1970-12-03 |
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