GB1352240A - High voltage processing of cathode ray tubes - Google Patents
High voltage processing of cathode ray tubesInfo
- Publication number
- GB1352240A GB1352240A GB6060271A GB6060271A GB1352240A GB 1352240 A GB1352240 A GB 1352240A GB 6060271 A GB6060271 A GB 6060271A GB 6060271 A GB6060271 A GB 6060271A GB 1352240 A GB1352240 A GB 1352240A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- coils
- cathode
- conveyer
- dec
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission
-
- 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
- H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
-
- 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
- H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
- H01J9/445—Aging of tubes or lamps, e.g. by "spot knocking"
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
1352240 Endless chain conveyers RCA CORPORATION 29 Dec 1971 [28 Dec 1970] 60602/71 Heading B8A [Also in Divisions H1 and H2] After manufacture a cathode-ray display tube is moved to a testing station on a conveyer, and whilst on the conveyer is subjected to "spotknock" "hot-shot" and "ageing" processes, and finally to an additional stabilizing process wherein the cathode and all except the final electrodes are at or near earth whilst the final electrode is at about 35 KV; during this latter process electrons impinge on the screen, and to prevent damage they are scanned across the screen by means of a continuous non-uniform magnetic field produced by coils 100, Fig. 1, arranged along the path of the tube. The coils may be arranged in groups of four, as illustrated, with adjacent coils oppositely energized preferably with A.C. though D.C. may be used. The coils may be on both sides of the path of the tube, and preferably the groups on opposite sides are staggered. The tube 32 is suspended by a yoke 21 from a trolley 10 which is driven along an I- beam 16 by means of a flexible chain 18. A terminal block 44 is connected by a cable 84 to the tube electrodes and is provided with spring- loaded contacts (not shown in Fig. 1) adapted to co-operate with bus-bars (not shown) along selected portions of the track. Below an insulator 28 is a further contact member 88 which similarly conveys UHT to the tube via yoke 21 lead 91 and terminal 92.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10179470A | 1970-12-28 | 1970-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1352240A true GB1352240A (en) | 1974-05-08 |
Family
ID=22286446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6060271A Expired GB1352240A (en) | 1970-12-28 | 1971-12-29 | High voltage processing of cathode ray tubes |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3698786A (en) |
| JP (1) | JPS5118309B1 (en) |
| AU (1) | AU475625B2 (en) |
| BE (1) | BE777415A (en) |
| CA (1) | CA939738A (en) |
| DE (1) | DE2164232C3 (en) |
| ES (1) | ES398203A1 (en) |
| FR (1) | FR2120846A5 (en) |
| GB (1) | GB1352240A (en) |
| IT (1) | IT940466B (en) |
| NL (1) | NL7113773A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135113A (en) * | 1983-02-03 | 1984-08-22 | Mitsubishi Electric Corp | A process for suppressing electron beam drift phenomenon in a cathode ray tube |
| GB2326973A (en) * | 1997-07-04 | 1999-01-06 | Samsung Electronics Co Ltd | Supplying a test signal to a video display device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3966287A (en) * | 1975-06-27 | 1976-06-29 | Rca Corporation | Low-voltage aging of cathode-ray tubes |
| US4052776A (en) * | 1976-09-30 | 1977-10-11 | Zenith Radio Corporation | Method of spot-knocking an electron gun assembly in a color television picture tube |
| FR2412161A1 (en) * | 1977-12-19 | 1979-07-13 | Rca Corp | HV treatment of CRT - with end of tube collar connected into socket immersed in liq. dielectric and with HV applied to socket |
| JPS56161787A (en) * | 1980-05-16 | 1981-12-12 | Hitachi Ltd | Manufacture for cathode ray tube |
| US4392834A (en) * | 1981-05-21 | 1983-07-12 | Rca Corporation | Method for aging a cathode of a cathode-ray tube |
| US4940439A (en) * | 1987-12-25 | 1990-07-10 | Hitachi, Ltd. | Method of and apparatus for manufacturing Braun tubes |
| US4820223A (en) * | 1988-06-02 | 1989-04-11 | Rca Licensing Corp. | System and method for monitoring spot-knocking of CRTs |
| JP2822480B2 (en) * | 1989-09-14 | 1998-11-11 | ソニー株式会社 | Method and apparatus for manufacturing cathode ray tube |
-
1970
- 1970-12-28 US US101794A patent/US3698786A/en not_active Expired - Lifetime
-
1971
- 1971-10-07 NL NL7113773A patent/NL7113773A/xx not_active Application Discontinuation
- 1971-10-27 CA CA126,295A patent/CA939738A/en not_active Expired
- 1971-11-05 IT IT30775/71A patent/IT940466B/en active
- 1971-12-16 AU AU36990/71A patent/AU475625B2/en not_active Expired
- 1971-12-21 ES ES398203A patent/ES398203A1/en not_active Expired
- 1971-12-23 DE DE2164232A patent/DE2164232C3/en not_active Expired
- 1971-12-23 FR FR7146329A patent/FR2120846A5/fr not_active Expired
- 1971-12-24 JP JP47003826A patent/JPS5118309B1/ja active Pending
- 1971-12-28 BE BE777415A patent/BE777415A/en unknown
- 1971-12-29 GB GB6060271A patent/GB1352240A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135113A (en) * | 1983-02-03 | 1984-08-22 | Mitsubishi Electric Corp | A process for suppressing electron beam drift phenomenon in a cathode ray tube |
| GB2326973A (en) * | 1997-07-04 | 1999-01-06 | Samsung Electronics Co Ltd | Supplying a test signal to a video display device |
| GB2326973B (en) * | 1997-07-04 | 2000-03-08 | Samsung Electronics Co Ltd | Method and apparatus for supplying a signal to a video display device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7113773A (en) | 1972-06-30 |
| DE2164232B2 (en) | 1974-04-25 |
| JPS5118309B1 (en) | 1976-06-09 |
| AU3699071A (en) | 1973-06-21 |
| IT940466B (en) | 1973-02-10 |
| CA939738A (en) | 1974-01-08 |
| AU475625B2 (en) | 1976-08-26 |
| DE2164232C3 (en) | 1974-11-21 |
| BE777415A (en) | 1972-04-17 |
| DE2164232A1 (en) | 1972-07-13 |
| ES398203A1 (en) | 1975-03-16 |
| US3698786A (en) | 1972-10-17 |
| FR2120846A5 (en) | 1972-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |