GB1213339A - Method of manufacturing luminescent screens - Google Patents

Method of manufacturing luminescent screens

Info

Publication number
GB1213339A
GB1213339A GB4713368A GB4713368A GB1213339A GB 1213339 A GB1213339 A GB 1213339A GB 4713368 A GB4713368 A GB 4713368A GB 4713368 A GB4713368 A GB 4713368A GB 1213339 A GB1213339 A GB 1213339A
Authority
GB
United Kingdom
Prior art keywords
suspension
excess
luminescent
oct
polyvinyl alcohol
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
GB4713368A
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 GB1213339A publication Critical patent/GB1213339A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/04—Chromates
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
    • H01J29/225—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel photosensitive adhesive
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

1,213,339. Luminescent screens. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 4 Oct., 1968 [7 Oct., 1967], No. 47133/68. Heading H1D. A method of manufacturing a luminescent screen for a C.R.T. comprises using a polyvinyl alcohol of average molecular wt. at least 100,000 e.g. 105,000 and preferably having a degree of hydrolysis of 88%. An excess of the luminescent suspension in a photosensitive lacquer consisting of a bichromate and polyvinyl alcohol aqueous solution from a storage container 10 (Fig. 8, not shown) is dispersed on to the screen, the excess removed, the remainder dried, exposed to light in accordance with a desired pattern and the non-exposed areas of the lacquer washed away. The excess suspension is returned to the storage container via funnel (33) and the suspension therein is replenished by suspension from a further container (24). The process may be repeated to produce further patterns as in colour tubes. Viscosities and specific gravities of the suspensions as a function of time are considered (Fig. 9, not shown). The method allows a reduction in the exposure time and the recycling of the suspension maintains the viscosity of the solution within narrow limits, and also the photosensitivity, a varying exposure time not being acceptable in a continuous process.
GB4713368A 1967-10-07 1968-10-04 Method of manufacturing luminescent screens Expired GB1213339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6713664A NL6713664A (en) 1967-10-07 1967-10-07

Publications (1)

Publication Number Publication Date
GB1213339A true GB1213339A (en) 1970-11-25

Family

ID=19801394

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4713368A Expired GB1213339A (en) 1967-10-07 1968-10-04 Method of manufacturing luminescent screens

Country Status (7)

Country Link
AT (1) AT288502B (en)
BE (1) BE721967A (en)
CH (1) CH502692A (en)
DE (1) DE1789018A1 (en)
FR (1) FR1586266A (en)
GB (1) GB1213339A (en)
NL (1) NL6713664A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908232A (en) * 1987-04-10 1990-03-13 Kabushiki Kaisha Toshiba Method and apparatus for forming a thin film on an outer surface of a display screen of a cathode ray tube
GB2225157A (en) * 1988-10-29 1990-05-23 Samsung Electronic Devices Cathode ray tube screen manufacture
GB2236428A (en) * 1989-09-20 1991-04-03 Samsung Electronic Devices Process for coating phosphor slurry on a cathode ray tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908232A (en) * 1987-04-10 1990-03-13 Kabushiki Kaisha Toshiba Method and apparatus for forming a thin film on an outer surface of a display screen of a cathode ray tube
GB2225157A (en) * 1988-10-29 1990-05-23 Samsung Electronic Devices Cathode ray tube screen manufacture
GB2236428A (en) * 1989-09-20 1991-04-03 Samsung Electronic Devices Process for coating phosphor slurry on a cathode ray tube
GB2236428B (en) * 1989-09-20 1994-03-30 Samsung Electronic Devices Process for coating phosphor slurry on a cathode ray tube

Also Published As

Publication number Publication date
FR1586266A (en) 1970-02-13
CH502692A (en) 1971-01-31
AT288502B (en) 1971-03-10
NL6713664A (en) 1969-04-09
BE721967A (en) 1969-04-08
DE1789018A1 (en) 1972-01-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees