GB1481717A - Shadow mask and method of making same - Google Patents

Shadow mask and method of making same

Info

Publication number
GB1481717A
GB1481717A GB53206/74A GB5320674A GB1481717A GB 1481717 A GB1481717 A GB 1481717A GB 53206/74 A GB53206/74 A GB 53206/74A GB 5320674 A GB5320674 A GB 5320674A GB 1481717 A GB1481717 A GB 1481717A
Authority
GB
United Kingdom
Prior art keywords
shadow mask
apertures
mask
making same
sept
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
GB53206/74A
Other languages
English (en)
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.)
Buckbee Mears Co
Original Assignee
Buckbee Mears Co
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 Buckbee Mears Co filed Critical Buckbee Mears Co
Publication of GB1481717A publication Critical patent/GB1481717A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
GB53206/74A 1974-09-20 1974-12-09 Shadow mask and method of making same Expired GB1481717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US507689A US3916243A (en) 1974-09-20 1974-09-20 Channeled shadow mask

Publications (1)

Publication Number Publication Date
GB1481717A true GB1481717A (en) 1977-08-03

Family

ID=24019722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53206/74A Expired GB1481717A (en) 1974-09-20 1974-12-09 Shadow mask and method of making same

Country Status (9)

Country Link
US (1) US3916243A (it)
JP (1) JPS5143072A (it)
BE (1) BE823071A (it)
CA (1) CA1024580A (it)
DE (1) DE2459004A1 (it)
FR (1) FR2285709A1 (it)
GB (1) GB1481717A (it)
IT (1) IT1031795B (it)
NL (1) NL7415706A (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048536A (en) * 1976-03-18 1977-09-13 Buckbee-Mears Company Shadow mask with plurality of recessed regions extending across mask in two directions
US4131822A (en) * 1977-05-20 1978-12-26 Rca Corporation Cathode ray tube with stress-relieved slot-aperture shadow mask
US4293792A (en) * 1979-12-18 1981-10-06 Rca Corporation Color picture tube having improved slit type shadow mask
US4300069A (en) * 1979-12-18 1981-11-10 Rca Corporation Color picture tube having improved slit type shadow mask and method of making same
CA1175876A (en) * 1980-05-12 1984-10-09 Roland Thoms Television picture tubes and hole technology
US4389592A (en) * 1980-05-12 1983-06-21 Buckbee-Mears Company Color picture tube and aperture mask therefor
JPS577041A (en) * 1980-05-12 1982-01-14 Buckbee Mears Co Structure with visual sense opening line and method of manufacturing same
US4727280A (en) * 1984-03-30 1988-02-23 Mitsubishi Denki Kabushiki Kaisha Shadow mask for color cathode ray tube shaped to minimize doming
JPS60240028A (ja) * 1984-05-10 1985-11-28 Mitsubishi Electric Corp シヤドウマスク
US4632726A (en) * 1984-07-13 1986-12-30 Bmc Industries, Inc. Multi-graded aperture mask method
FR2576452A1 (fr) * 1985-01-22 1986-07-25 Rca Corp Tube image couleur a masque d'ombre perfectionne
JPS622434A (ja) * 1985-06-27 1987-01-08 Sony Corp 陰極線管の色選別機構の製法
US5382870A (en) * 1992-09-21 1995-01-17 Bmc Industries, Inc. Stackable aperture masks
DE69718986T2 (de) * 1996-11-11 2004-01-08 Kabushiki Kaisha Toshiba, Kawasaki Schattenmaske und Verfahren zu deren Herstellung
KR20020018278A (ko) * 2000-09-01 2002-03-08 김순택 칼라 음극선관용 마스크 및 이 마스크의 제조방법과마스크를 제조하기 위한 노광마스크

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653900A (en) * 1969-08-15 1972-04-04 Zenith Radio Corp Selective etching process for changing shadow-mask aperture size
US3753663A (en) * 1969-08-15 1973-08-21 Zenith Radio Corp Blank for shadow mask for color television picture tube
US3923566A (en) * 1972-06-21 1975-12-02 Rca Corp Method of fabricating an apertured mask for a cathode-ray tube

Also Published As

Publication number Publication date
FR2285709A1 (fr) 1976-04-16
JPS5143072A (en) 1976-04-13
US3916243A (en) 1975-10-28
NL7415706A (nl) 1976-03-23
DE2459004A1 (de) 1976-04-01
FR2285709B1 (it) 1979-09-28
CA1024580A (en) 1978-01-17
BE823071A (nl) 1975-04-01
IT1031795B (it) 1979-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee