GB1156077A - Colour Display Cathode Ray Tube Display Screens. - Google Patents

Colour Display Cathode Ray Tube Display Screens.

Info

Publication number
GB1156077A
GB1156077A GB5010567A GB5010567A GB1156077A GB 1156077 A GB1156077 A GB 1156077A GB 5010567 A GB5010567 A GB 5010567A GB 5010567 A GB5010567 A GB 5010567A GB 1156077 A GB1156077 A GB 1156077A
Authority
GB
United Kingdom
Prior art keywords
lamp
colour
light
photo
source
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
GB5010567A
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 GB1156077A publication Critical patent/GB1156077A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H01J9/2274—Light sources particularly adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Luminescent Compositions (AREA)

Abstract

1,156,077. Automatic light intensity control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov.3, 1967 [Nov. 8, 1966], No.50105/67. Heading G3R. [Also in Division H1] A multi-colour cathode-ray tube is manufactured by passing light from a source through a perforated shadow mask to fix luminescent material of each colour, a photo-cell responsive to light from the source controlling the energy supplied to the source to maintain light intensity constant. The screen of the tube is moved from one to the other of a number of operating stations. At each station a layer of luminescent material of a different colour is applied together with a photo-sensitive lacquer which fixes the material to form dots where it is exposed to light from a discharge lamp passing through a suitably perforated shadow mask which may be that finally used in the tube. The unfixed material is then washed off before passing the screen to the next station at which a further pattern of dots, displaced from the first and corresponding to a different colour, is produced. In Fig. 2, the voltage output of a photo-cell 12 responsive to light from a HPMV discharge lamp 7 at a typical station is compared with a reference voltage from a potentiometer 31 so that any difference is effective through a transistor amplifier 29 to operate a motor 30 adjusting the tapping 24 of a lamp supply transformer 23 in the appropriate direction to maintain constant light output from lamp 7. The lamp is switched on by a self-holding manually-operated push button switch 44 which remains on until a clock 43 releases a pin 40 after a time suited to the colour. When the reading of a voltmeter 45 exceeds a predetermined value, lamp 7 needs replacing. Operation of the lamp above its rating because of its intermittent use is referred to.
GB5010567A 1966-11-08 1967-11-03 Colour Display Cathode Ray Tube Display Screens. Expired GB1156077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6615719A NL6615719A (en) 1966-11-08 1966-11-08

Publications (1)

Publication Number Publication Date
GB1156077A true GB1156077A (en) 1969-06-25

Family

ID=19798133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5010567A Expired GB1156077A (en) 1966-11-08 1967-11-03 Colour Display Cathode Ray Tube Display Screens.

Country Status (5)

Country Link
BE (1) BE706139A (en)
ES (1) ES346822A1 (en)
GB (1) GB1156077A (en)
NL (1) NL6615719A (en)
SE (1) SE323706B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217516A (en) * 1988-04-13 1989-10-25 Mitsubishi Electric Corp Exposure device for forming phosphor deposited screen in in-line cathode ray tube
EP0501859A2 (en) * 1991-02-23 1992-09-02 Sony Corporation Method of producing CRT fluorescent screen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217516A (en) * 1988-04-13 1989-10-25 Mitsubishi Electric Corp Exposure device for forming phosphor deposited screen in in-line cathode ray tube
US4983995A (en) * 1988-04-13 1991-01-08 Mitsubishi Denki Kabushiki Kaisha Exposure device for forming phosphor deposited screen in in-line cathode ray tube
GB2217516B (en) * 1988-04-13 1992-11-18 Mitsubishi Electric Corp Exposure device for forming phosphor deposited screen in in-line cathode ray tube
EP0501859A2 (en) * 1991-02-23 1992-09-02 Sony Corporation Method of producing CRT fluorescent screen
EP0501859A3 (en) * 1991-02-23 1993-06-23 Sony Corporation Method of producing crt fluorescent screen

Also Published As

Publication number Publication date
ES346822A1 (en) 1969-01-01
NL6615719A (en) 1968-05-09
DE1537275B2 (en) 1975-11-13
DE1537275A1 (en) 1969-12-11
BE706139A (en) 1968-05-06
SE323706B (en) 1970-05-11

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