ES410396A1 - Method of manufacture of colour picture tubes - Google Patents

Method of manufacture of colour picture tubes

Info

Publication number
ES410396A1
ES410396A1 ES410396A ES410396A ES410396A1 ES 410396 A1 ES410396 A1 ES 410396A1 ES 410396 A ES410396 A ES 410396A ES 410396 A ES410396 A ES 410396A ES 410396 A1 ES410396 A1 ES 410396A1
Authority
ES
Spain
Prior art keywords
screen
area
light
mismatch
filter
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
ES410396A
Other languages
Spanish (es)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of ES410396A1 publication Critical patent/ES410396A1/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
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

A photographic method of printing a shield structure for a cathode ray tube having a pattern of luminescent material deposits on a shield holder and a mask having the same pattern of openings through the mask and fixed in a separate position of the screen support, to correct the mismatch between the light spots of the beams and the corresponding luminescent material deposits in a first area of the screen and a different mismatch between the light spots of the beams and the material spots Luminescent in a second zone of the screen, including the method of depositing a photosensitive coating on the screen support, exposing said coating through the openings of said mask to light from a small area light source and then revealing said exposed coating, characterized in that the photosensitive coating of the screen is exposed This is light through a first light filter and through a first continuous lens designed to minimize mismatch of the first area of the screen, and the photosensitive coating of the screen is exposed through a second filter of light and a different second continuous lens designed to minimize the mismatch of the second area of the screen, said first light filter being designed to provide maximum brightness exposure in the first area of the screen and being said second filter designed to provide maximum exposure brightness in the second area of the screen and a variation of brightness over the first area of the screen. (Machine-translation by Google Translate, not legally binding)
ES410396A 1972-01-14 1973-01-05 Method of manufacture of colour picture tubes Expired ES410396A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21778672A 1972-01-14 1972-01-14

Publications (1)

Publication Number Publication Date
ES410396A1 true ES410396A1 (en) 1975-12-01

Family

ID=22812510

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410396A Expired ES410396A1 (en) 1972-01-14 1973-01-05 Method of manufacture of colour picture tubes

Country Status (9)

Country Link
JP (1) JPS5137139B2 (en)
BE (1) BE793997A (en)
BR (1) BR7300204D0 (en)
CA (1) CA967048A (en)
ES (1) ES410396A1 (en)
FR (1) FR2168031A1 (en)
GB (1) GB1416751A (en)
IT (1) IT973236B (en)
NL (1) NL7217274A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902239C2 (en) * 1979-01-20 1983-01-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Process for the production of the fluorescent strips on the screen of a color picture tube
JPH0517219U (en) * 1991-08-13 1993-03-05 日本アビオニクス株式会社 Thumbscrew mounting structure

Also Published As

Publication number Publication date
IT973236B (en) 1974-06-10
BE793997A (en) 1973-05-02
JPS5137139B2 (en) 1976-10-14
GB1416751A (en) 1975-12-03
DE2301557A1 (en) 1973-07-19
FR2168031A1 (en) 1973-08-24
DE2301557B2 (en) 1976-07-15
CA967048A (en) 1975-05-06
JPS4882766A (en) 1973-11-05
BR7300204D0 (en) 1973-09-27
NL7217274A (en) 1973-07-17

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