DE3880485T2 - METHOD AND DEVICE FOR THE PRODUCTION OF CATHODE RAY TUBES PROVIDED WITH TENSIONED MASKS. - Google Patents

METHOD AND DEVICE FOR THE PRODUCTION OF CATHODE RAY TUBES PROVIDED WITH TENSIONED MASKS.

Info

Publication number
DE3880485T2
DE3880485T2 DE88905282T DE3880485T DE3880485T2 DE 3880485 T2 DE3880485 T2 DE 3880485T2 DE 88905282 T DE88905282 T DE 88905282T DE 3880485 T DE3880485 T DE 3880485T DE 3880485 T2 DE3880485 T2 DE 3880485T2
Authority
DE
Germany
Prior art keywords
shadow mask
frame
tension
mask
faceplate
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 - Fee Related
Application number
DE88905282T
Other languages
German (de)
Other versions
DE3880485D1 (en
Inventor
Paul Strauss
John Jarosz
James Fendley
W Dougherty
L Kraner
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.)
Zenith Electronics LLC
Original Assignee
Zenith Electronics LLC
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 LLC filed Critical Zenith Electronics LLC
Application granted granted Critical
Publication of DE3880485D1 publication Critical patent/DE3880485D1/en
Publication of DE3880485T2 publication Critical patent/DE3880485T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

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.
DE88905282T 1987-05-18 1988-05-18 METHOD AND DEVICE FOR THE PRODUCTION OF CATHODE RAY TUBES PROVIDED WITH TENSIONED MASKS. Expired - Fee Related DE3880485T2 (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 (2)

Publication Number Publication Date
DE3880485D1 DE3880485D1 (en) 1993-05-27
DE3880485T2 true DE3880485T2 (en) 1993-11-04

Family

ID=27489440

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88905282T Expired - Fee Related DE3880485T2 (en) 1987-05-18 1988-05-18 METHOD AND DEVICE FOR THE PRODUCTION OF CATHODE RAY TUBES PROVIDED WITH TENSIONED 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) NO890202L (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
ATE88595T1 (en) 1993-05-15
KR890702230A (en) 1989-12-23
EP0355124A1 (en) 1990-02-28
JPH02503610A (en) 1990-10-25
EP0355124B1 (en) 1993-04-21
WO1988009561A1 (en) 1988-12-01
HK94193A (en) 1993-09-17
CA1316977C (en) 1993-04-27
BR8807510A (en) 1990-04-17
NO890202D0 (en) 1989-01-17
DE3880485D1 (en) 1993-05-27
NO890202L (en) 1989-01-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee