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GB1496949A - Cathode ray tube - Google Patents

Cathode ray tube

Info

Publication number
GB1496949A
GB1496949A GB29413/75A GB2941375A GB1496949A GB 1496949 A GB1496949 A GB 1496949A GB 29413/75 A GB29413/75 A GB 29413/75A GB 2941375 A GB2941375 A GB 2941375A GB 1496949 A GB1496949 A GB 1496949A
Authority
GB
United Kingdom
Prior art keywords
mask
potential
colour
vertical
july
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
GB29413/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1496949A publication Critical patent/GB1496949A/en
Expired legal-status Critical Current

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
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • H01J29/81—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching using shadow masks
    • 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

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

1496949 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 July 1975 [17 July 1974] 29413/75 Heading H1D In a multigun colour TV C.R.T. to allow reduction of the obstruction by a shadow mask without loss of definition the mask 7 carries electrodes forming a quadruple lens round each aperture, defocusing vertically and focusing horizontally just beyond the luminescent screen 6, to irradiate from each gun a colour phosphor vertical stripe R, G, B slightly wider than the electron impact area. The mask may comprise crossed vertical and horizontal strips 13, 14 and 11, 12, attached but insulated with glass, each set commoned and carrying a potential respectively above and below the mean mask potential. Alternatively the mask may be made from interwoven conductors insulated at their intersections (Fig. 4, not shown) or if may be an apertured plate held at phosphor screen potential (e.g. Fe for magnetic screening) (Fig. 6 not shown) carrying between the apertures a set of vertical strips (e.g. vapour deposited Al) at a lower potential or isolated and charged by the electron beams to reach a stable equilibrium potential. In all embodiments secondary electron effects are negligible.
GB29413/75A 1974-07-17 1975-07-14 Cathode ray tube Expired GB1496949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7409642A NL167798C (en) 1974-07-17 1974-07-17 ELECTRON BEAM FOR DISPLAYING COLORED IMAGES.

Publications (1)

Publication Number Publication Date
GB1496949A true GB1496949A (en) 1978-01-05

Family

ID=19821774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29413/75A Expired GB1496949A (en) 1974-07-17 1975-07-14 Cathode ray tube

Country Status (13)

Country Link
JP (1) JPS5524652B2 (en)
AT (1) AT341012B (en)
AU (1) AU500139B2 (en)
BE (1) BE831393A (en)
BR (1) BR7504445A (en)
CA (1) CA1042059A (en)
ES (1) ES439433A1 (en)
FR (1) FR2279220A1 (en)
GB (1) GB1496949A (en)
IT (1) IT1036237B (en)
NL (1) NL167798C (en)
SE (1) SE398414B (en)
ZA (1) ZA754032B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2925712A1 (en) * 1978-06-27 1980-01-10 Philips Nv METHOD FOR PRODUCING ELECTRODE SYSTEMS AND ELECTRODE SYSTEMS PRODUCED BY THIS METHOD
WO2002061794A2 (en) * 2001-01-30 2002-08-08 Kabushiki Kaisha Toshiba Color cathode lay tube and method of manufacturing the same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7600417A (en) * 1976-01-16 1977-07-19 Philips Nv METHOD OF MANUFACTURING A CATHODE RAY TUBE FOR DISPLAYING COLORED IMAGES.
NL7600418A (en) * 1976-01-16 1977-07-19 Philips Nv METHOD FOR MANUFACTURING A COLOR IMAGE TUBE, COLOR IMAGE TUBE MADE IN ACCORDANCE WITH THE METHOD AND DEVICE FOR PERFORMING THE METHOD.
NL7600419A (en) * 1976-01-16 1977-07-19 Philips Nv COLOR IMAGE TUBE AND METHOD OF MANUFACTURE THEREOF.
NL7600422A (en) * 1976-01-16 1977-07-19 Philips Nv ELECTRICAL DISCHARGE DEVICE.
NL7704130A (en) * 1977-04-15 1978-10-17 Philips Nv COLOR IMAGE TUBE.
NL7711773A (en) * 1977-10-27 1979-05-02 Philips Nv COLOR IMAGE TUBE AND METHOD FOR THE MANUFACTURE OF SUCH COLOR IMAGE TUBE.
US4316126A (en) * 1979-11-23 1982-02-16 Rca Corporation Color television picture tube with color-selection structure and method of operation thereof
US4350922A (en) * 1980-06-20 1982-09-21 Rca Corporation Multicolor cathode-ray tube with quadrupolar focusing color-selection structure
US4311944A (en) * 1980-06-27 1982-01-19 Rca Corporation CRT With dipolar deflection and quadrupolar-focusing color-selection structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2925712A1 (en) * 1978-06-27 1980-01-10 Philips Nv METHOD FOR PRODUCING ELECTRODE SYSTEMS AND ELECTRODE SYSTEMS PRODUCED BY THIS METHOD
WO2002061794A2 (en) * 2001-01-30 2002-08-08 Kabushiki Kaisha Toshiba Color cathode lay tube and method of manufacturing the same
WO2002061794A3 (en) * 2001-01-30 2002-11-28 Toshiba Kk Color cathode lay tube and method of manufacturing the same
US6919673B2 (en) 2001-01-30 2005-07-19 Kabushiki Kaisha Toshiba Color cathode ray tube and method of manufacturing the same

Also Published As

Publication number Publication date
ATA540575A (en) 1977-05-15
NL167798C (en) 1982-01-18
AU8300675A (en) 1977-01-20
FR2279220A1 (en) 1976-02-13
AU500139B2 (en) 1979-05-10
AT341012B (en) 1978-01-10
JPS5134663A (en) 1976-03-24
FR2279220B1 (en) 1979-07-27
IT1036237B (en) 1979-10-30
SE7508010L (en) 1976-01-19
BR7504445A (en) 1977-02-15
CA1042059A (en) 1978-11-07
NL167798B (en) 1981-08-17
NL7409642A (en) 1976-01-20
DE2529697A1 (en) 1976-01-29
ZA754032B (en) 1977-01-26
JPS5524652B2 (en) 1980-06-30
SE398414B (en) 1977-12-19
ES439433A1 (en) 1977-02-01
BE831393A (en) 1976-01-15
DE2529697B2 (en) 1977-03-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920714