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GB1289419A - - Google Patents

Info

Publication number
GB1289419A
GB1289419A GB1289419DA GB1289419A GB 1289419 A GB1289419 A GB 1289419A GB 1289419D A GB1289419D A GB 1289419DA GB 1289419 A GB1289419 A GB 1289419A
Authority
GB
United Kingdom
Prior art keywords
grid
beams
grids
cathode
centre
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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP5189369A external-priority patent/JPS4921981B1/ja
Priority claimed from JP5189269A external-priority patent/JPS4921980B1/ja
Application filed filed Critical
Publication of GB1289419A publication Critical patent/GB1289419A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • H01J29/462—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement arrangements for interrupting the beam during inoperative periods
    • 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
    • H01J29/51—Arrangements for controlling convergence of a plurality of beams by means of electric field only
    • 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
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H01J31/201—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode
    • H01J31/203—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam
    • H01J31/206—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam with three coplanar electron beams

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1289419 Cathode-ray tubes SONY CORP 30 June 1970 [30 June 1969 (2)] 31599/70 Heading H1D In a cathode-ray tube of the type wherein a plurality of beams generated by a cathode/grid assembly intersect at the centre of a common focusing lens, an auxiliary grid is provided in the path of at least one of the beams between first and second grids in order to equalize the cut-off voltages of the beams. In Fig. 3 auxiliary grids G2<SP>1</SP> are provided in the paths of the outer beams between grids G1 and G2, and the second grid G2 is provided with a protuberance G2<SP>1</SP>G which has a similar effect on the centre beam. In a modification, Fig. 2 (not shown), the end of grid G2 is planar and a grid G2<SP>1</SP> is provided for the centre beam. In Fig. 3 the cathodes are parallel, but in modifications, Figs. 4 and 5 (not shown), the cathodes converge and are surrounded by individual grids G1; the grid G2 may be provided with a protuberance (Fig. 5) or the centre cathode/grid may be moved forward so that the grid (G1G) surface is aligned with the auxiliary grids G2<SP>1</SP> of the outer beams. The presence of the auxiliary grids G2<SP>1</SP> may cause the beams to converge or diverge, according to their position and potential; this effect may be avoided by arranging that the cathode-grid spacing of the centre beam is greater or less than that of the outer beams or that the aperture in the grid G1G of the centre beam is larger or smaller than those of the outer beams so that the potential of the auxiliary grids G2<SP>1</SP> may be such as not to cause excessive convergence or divergence whilst equalizing the cut-off voltages of the three beams. The tube may be a colour television tube using co-planar beams and an apertured grill acting as a shadow mask.
GB1289419D 1969-06-30 1970-06-30 Expired GB1289419A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5189369A JPS4921981B1 (en) 1969-06-30 1969-06-30
JP5189269A JPS4921980B1 (en) 1969-06-30 1969-06-30

Publications (1)

Publication Number Publication Date
GB1289419A true GB1289419A (en) 1972-09-20

Family

ID=26392484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289419D Expired GB1289419A (en) 1969-06-30 1970-06-30

Country Status (5)

Country Link
US (1) US3678329A (en)
DE (1) DE2030384A1 (en)
FR (1) FR2053946A5 (en)
GB (1) GB1289419A (en)
NL (1) NL150264B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193595A (en) * 1986-06-30 1988-02-10 Sony Corp Electron gun arrangements
US4922166A (en) * 1986-06-30 1990-05-01 Sony Corporation Electron gun for multigun cathode ray tube

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3561781D1 (en) * 1984-02-20 1988-04-07 Toshiba Kk Electron gun
JPH0656739B2 (en) * 1984-07-26 1994-07-27 株式会社東芝 Electron gun
US4871949A (en) * 1987-01-23 1989-10-03 Albert Abramson Cathode ray tube
US6798155B2 (en) * 2002-05-15 2004-09-28 Lg. Philips Display Co., Ltd. Color image display device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888606A (en) * 1956-08-27 1959-05-26 Rca Corp Modulation control for cathode ray tubes
US3028521A (en) * 1956-12-21 1962-04-03 Zenith Radio Corp Image-reproducting device
BE569609A (en) * 1957-07-22
US2862144A (en) * 1958-03-21 1958-11-25 Gen Dynamics Corp Simplified system for character selection in a shaped beam tube
NL130957C (en) * 1961-05-24
US3417199A (en) * 1963-10-24 1968-12-17 Sony Corp Cathode ray device
US3514663A (en) * 1967-01-14 1970-05-26 Sony Corp Cathode ray tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193595A (en) * 1986-06-30 1988-02-10 Sony Corp Electron gun arrangements
US4922166A (en) * 1986-06-30 1990-05-01 Sony Corporation Electron gun for multigun cathode ray tube
GB2193595B (en) * 1986-06-30 1990-08-22 Sony Corp Electron gun arrangements

Also Published As

Publication number Publication date
DE2030384A1 (en) 1971-01-14
FR2053946A5 (en) 1971-04-16
NL7009340A (en) 1971-01-04
NL150264B (en) 1976-07-15
US3678329A (en) 1972-07-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years