GB1388971A - Colour display cathode ray tube - Google Patents

Colour display cathode ray tube

Info

Publication number
GB1388971A
GB1388971A GB3993273A GB3993273A GB1388971A GB 1388971 A GB1388971 A GB 1388971A GB 3993273 A GB3993273 A GB 3993273A GB 3993273 A GB3993273 A GB 3993273A GB 1388971 A GB1388971 A GB 1388971A
Authority
GB
United Kingdom
Prior art keywords
distance
screen
colour
phosphor
adjacent
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
GB3993273A
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 GB1388971A publication Critical patent/GB1388971A/en
Expired legal-status Critical Current

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
    • H01J31/20—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
    • H01J31/205—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 electron beams in delta configuration
    • 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

Abstract

1388971 Colour cathode-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 Aug 1973 [26 Aug 1972] 39932/73 Heading H1D A shadow mask type colour cathode-ray tube has triads of phosphor dots in triangular relationships and the average of the distances between the centres of the three phosphor dots associated with each mask aperture at the edge of the screen and the centroid of the triangle defined by the centres is at least 10% less than one third of the distance between a said phosphor dot and an adjacent phosphor dot of the same colour. The distance between the mask and the screen is preferably such that the distance between an electron spot and the two other electron spots produced by beams through the same aperture will be equal to the distance between the first spot and the two adjacent electron spots associated with an adjacent mask aperture. A light absorbing material can surround the phosphor dots. The arrangement is said to improve colour purity at the edges of the screen.
GB3993273A 1972-08-26 1973-08-23 Colour display cathode ray tube Expired GB1388971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7211677A NL7211677A (en) 1972-08-26 1972-08-26

Publications (1)

Publication Number Publication Date
GB1388971A true GB1388971A (en) 1975-04-03

Family

ID=19816798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3993273A Expired GB1388971A (en) 1972-08-26 1973-08-23 Colour display cathode ray tube

Country Status (11)

Country Link
US (1) US3904912A (en)
JP (1) JPS4965177A (en)
AU (1) AU5936573A (en)
BE (1) BE804027A (en)
CA (1) CA974566A (en)
DE (1) DE2339834A1 (en)
ES (1) ES418150A1 (en)
FR (1) FR2197233B1 (en)
GB (1) GB1388971A (en)
IT (1) IT994668B (en)
NL (1) NL7211677A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121945A (en) * 1975-04-17 1976-10-25 Matsushita Electric Ind Co Ltd Burning cylinder for gas stove
US4701789A (en) * 1985-03-13 1987-10-20 Rank Electronic Tubes Limited Cathode ray tube
KR900004820B1 (en) * 1987-03-03 1990-07-07 미쓰비시덴기 가부시기가이샤 Color display tube having shadow mask

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1165766A (en) * 1967-06-06 1969-10-01 Thorn Aei Radio And Tubes Ltd Improvements in Cathode Ray Tubes for Colour Television
US3695871A (en) * 1970-11-27 1972-10-03 Howard G Lange Method of screening a color image reproducing device
US3790839A (en) * 1972-04-04 1974-02-05 Zenith Radio Corp Rectangular grade black surround screen

Also Published As

Publication number Publication date
FR2197233A1 (en) 1974-03-22
DE2339834A1 (en) 1974-03-07
IT994668B (en) 1975-10-20
JPS4965177A (en) 1974-06-24
ES418150A1 (en) 1976-03-16
BE804027A (en) 1974-02-25
AU5936573A (en) 1975-02-20
CA974566A (en) 1975-09-16
NL7211677A (en) 1974-02-28
FR2197233B1 (en) 1976-06-18
US3904912A (en) 1975-09-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees