HK94193A - Process and apparatus for the manufacture of cathode ray tubes having tension masks - Google Patents

Process and apparatus for the manufacture of cathode ray tubes having tension masks

Info

Publication number
HK94193A
HK94193A HK941/93A HK94193A HK94193A HK 94193 A HK94193 A HK 94193A HK 941/93 A HK941/93 A HK 941/93A HK 94193 A HK94193 A HK 94193A HK 94193 A HK94193 A HK 94193A
Authority
HK
Hong Kong
Prior art keywords
shadow mask
frame
tension
mask
faceplate
Prior art date
Application number
HK941/93A
Inventor
Paul Strauss
John Jarosz
James Fendley
Lawrence W Dougherty
James L Kraner
Original Assignee
Zenith Electronics 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
Priority claimed from US07/051,896 external-priority patent/US4790786A/en
Priority claimed from US07/140,019 external-priority patent/US4934974A/en
Priority claimed from US07/139,892 external-priority patent/US4894037A/en
Priority claimed from US07/139,997 external-priority patent/US4840596A/en
Application filed by Zenith Electronics Corp filed Critical Zenith Electronics Corp
Publication of HK94193A publication Critical patent/HK94193A/en

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
    • 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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H01J29/073—Mounting arrangements associated with shadow masks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Liquid Crystal (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

This invention relates to a reusable factory fixture frame (82) and process for using same in the manufacture of a color cathode ray tube (20) having a flat faceplate (24) and a tensed foil shadow mask (50). The frame provides for mounting an in-process shadow mask during photoexposure of an in-process faceplate in a lighthouse (122). The frame (82) comprises generally rectangular frame means and quick-release mechanical mask-retaining means (88) for temporarily and removably supporting an in-process shadow mask in tension. The frame (82) includes a generally rectangular frame structure having grooves (24) thereabout for receiving an edge (26) of the shadow mask. The mask retaining means (88) may comprise spring-loaded mechanical mask-retaining devices (18) which are secured to the side of the factory fixture frame or quick-release mechanical spring clips (34) for temporarily and removably supporting the in-process shadow mask in tension in the grooves. Alternatively at least one elongate rod-like (28) member extending lengthwise of and complementarily mating with the grooves in the frame structure may be employed for temporarily and removably supporting an in-process shadow mask in tension. The shadow mask is heated and allowed to expand prior to being temporarily and removably supported on the frame, and the shadow mask is allowed to cool and shrink in tension while so being supported to effect tensing of the shadow mask in clamped condition on the frame. Preferably, the frame has at least first six-point indexing means (132) on a first side (84) for registration with complementary registration-affording means (134) on an exposure lighthouse (122), and second six-point indexing means (136) on a second, opposed side (118) for registration with complementary registration-affording means (138) on an in-process faceplate (120). As a result, the in-process shadow mask can be precisely registered and re-registered with the lighthouse (122) and the in-process faceplate (120) for the photoexposure of the in-process faceplate while retaining the in-process shadow mask in tension.
HK941/93A 1987-05-18 1993-09-09 Process and apparatus for the manufacture of cathode ray tubes having tension masks HK94193A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US07/051,896 US4790786A (en) 1987-05-18 1987-05-18 Factory fixture frame for an in-process tension mask color cathode ray tube
US07/140,019 US4934974A (en) 1987-12-31 1987-12-31 Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
US07/139,892 US4894037A (en) 1987-12-31 1987-12-31 Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
US07/139,997 US4840596A (en) 1987-12-31 1987-12-31 Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
PCT/US1988/001678 WO1988009561A1 (en) 1987-05-18 1988-05-18 Process and apparatus for the manufacture of cathode ray tubes having tension masks

Publications (1)

Publication Number Publication Date
HK94193A true HK94193A (en) 1993-09-17

Family

ID=27489440

Family Applications (1)

Application Number Title Priority Date Filing Date
HK941/93A HK94193A (en) 1987-05-18 1993-09-09 Process and apparatus for the manufacture of cathode ray tubes having tension masks

Country Status (10)

Country Link
EP (1) EP0355124B1 (en)
JP (1) JPH02503610A (en)
KR (1) KR890702230A (en)
AT (1) ATE88595T1 (en)
BR (1) BR8807510A (en)
CA (1) CA1316977C (en)
DE (1) DE3880485T2 (en)
HK (1) HK94193A (en)
NO (1) NO890202D0 (en)
WO (1) WO1988009561A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW385913U (en) * 1996-05-15 2000-03-21 Matsushita Electronics Corp Planar member for shadow mask of cathode-ray tube and manufacturing method of shadow mask
TW460893B (en) * 1998-11-27 2001-10-21 Koninkl Philips Electronics Nv Color selection means for color display tubes and color display tubes provided with the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733366A (en) * 1956-01-31 Grimm ctal
NL158008B (en) * 1950-04-28 Ibm HOLOGRAPHIC MEMORY.
US3894321A (en) * 1974-01-24 1975-07-15 Zenith Radio Corp Method for processing a color cathode ray tube having a thin foil mask sealed directly to the bulb
US4591344A (en) * 1983-09-30 1986-05-27 Zenith Electronics Corporation Method of fabricating a tension mask color cathode ray tube

Also Published As

Publication number Publication date
DE3880485D1 (en) 1993-05-27
JPH02503610A (en) 1990-10-25
KR890702230A (en) 1989-12-23
BR8807510A (en) 1990-04-17
WO1988009561A1 (en) 1988-12-01
DE3880485T2 (en) 1993-11-04
EP0355124A1 (en) 1990-02-28
NO890202L (en) 1989-01-17
EP0355124B1 (en) 1993-04-21
NO890202D0 (en) 1989-01-17
CA1316977C (en) 1993-04-27
ATE88595T1 (en) 1993-05-15

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