DE3175329D1 - Aperture mask for a color television tube, color television tube comprising such a mask and method for obtaining the mask - Google Patents

Aperture mask for a color television tube, color television tube comprising such a mask and method for obtaining the mask

Info

Publication number
DE3175329D1
DE3175329D1 DE8181103455T DE3175329T DE3175329D1 DE 3175329 D1 DE3175329 D1 DE 3175329D1 DE 8181103455 T DE8181103455 T DE 8181103455T DE 3175329 T DE3175329 T DE 3175329T DE 3175329 D1 DE3175329 D1 DE 3175329D1
Authority
DE
Germany
Prior art keywords
mask
color television
television tube
obtaining
aperture
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
DE8181103455T
Other languages
German (de)
Inventor
Roland Thoms
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.)
BMC Industries Inc
Original Assignee
BMC Industries Inc
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 US06/148,683 external-priority patent/US4353948A/en
Application filed by BMC Industries Inc filed Critical BMC Industries Inc
Application granted granted Critical
Publication of DE3175329D1 publication Critical patent/DE3175329D1/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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
    • 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
    • H01J29/076—Shadow masks for colour television tubes characterised by the shape or distribution of beam-passing apertures

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • ing And Chemical Polishing (AREA)
DE8181103455T 1980-05-12 1981-05-07 Aperture mask for a color television tube, color television tube comprising such a mask and method for obtaining the mask Expired DE3175329D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14868280A 1980-05-12 1980-05-12
US06/148,683 US4353948A (en) 1980-05-12 1980-05-12 Hole technology

Publications (1)

Publication Number Publication Date
DE3175329D1 true DE3175329D1 (en) 1986-10-23

Family

ID=26846063

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181103455T Expired DE3175329D1 (en) 1980-05-12 1981-05-07 Aperture mask for a color television tube, color television tube comprising such a mask and method for obtaining the mask

Country Status (6)

Country Link
EP (1) EP0039906B1 (en)
JP (1) JPH0713158Y2 (en)
AR (1) AR223591A1 (en)
BR (1) BR8102909A (en)
CA (1) CA1175876A (en)
DE (1) DE3175329D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950007681B1 (en) * 1990-11-22 1995-07-14 가부시키가이샤 도시바 Shadow mask for tv

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881762U (en) * 1971-12-30 1973-10-05
US3973965A (en) * 1972-05-30 1976-08-10 Tokyo Shibaura Electric Co., Ltd. Making shadow mask with slit-shaped apertures for CRT
US4069085A (en) * 1973-07-16 1978-01-17 U.S. Philips Corporation Apparatus for forming apertures in a thin metal tape such as a shadow mask for a color television display tube
US3916243A (en) * 1974-09-20 1975-10-28 Buckbee Mears Co Channeled shadow mask
JPS5310961A (en) * 1976-07-19 1978-01-31 Hitachi Ltd Color picture tube
GB2020892A (en) * 1978-05-10 1979-11-21 Rca Corp C.R.T. Silt Type Shadow Mask
US4293792A (en) * 1979-12-18 1981-10-06 Rca Corporation Color picture tube having improved slit type shadow mask

Also Published As

Publication number Publication date
BR8102909A (en) 1982-02-02
EP0039906B1 (en) 1986-09-17
JPH069043U (en) 1994-02-04
AR223591A1 (en) 1981-08-31
EP0039906A2 (en) 1981-11-18
EP0039906A3 (en) 1982-06-16
JPH0713158Y2 (en) 1995-03-29
CA1175876A (en) 1984-10-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition