EP0039906A3 - Television picture tubes and hole technology - Google Patents

Television picture tubes and hole technology Download PDF

Info

Publication number
EP0039906A3
EP0039906A3 EP81103455A EP81103455A EP0039906A3 EP 0039906 A3 EP0039906 A3 EP 0039906A3 EP 81103455 A EP81103455 A EP 81103455A EP 81103455 A EP81103455 A EP 81103455A EP 0039906 A3 EP0039906 A3 EP 0039906A3
Authority
EP
European Patent Office
Prior art keywords
television picture
picture tubes
hole technology
technology
hole
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.)
Granted
Application number
EP81103455A
Other versions
EP0039906B1 (en
EP0039906A2 (en
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
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
Priority claimed from US06/148,683 external-priority patent/US4353948A/en
Application filed by Buckbee Mears Co filed Critical Buckbee Mears Co
Priority to AT81103455T priority Critical patent/ATE22367T1/en
Publication of EP0039906A2 publication Critical patent/EP0039906A2/en
Publication of EP0039906A3 publication Critical patent/EP0039906A3/en
Application granted granted Critical
Publication of EP0039906B1 publication Critical patent/EP0039906B1/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
EP19810103455 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 EP0039906B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103455T ATE22367T1 (en) 1980-05-12 1981-05-07 SHADOW MASK FOR A COLOR TELEVISION TUBE, COLOR TELEVISION TUBE WITH SUCH MASK AND METHOD OF MAKING THE MASK.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14868280A 1980-05-12 1980-05-12
US148682 1980-05-12
US148683 1980-05-12
US06/148,683 US4353948A (en) 1980-05-12 1980-05-12 Hole technology

Publications (3)

Publication Number Publication Date
EP0039906A2 EP0039906A2 (en) 1981-11-18
EP0039906A3 true EP0039906A3 (en) 1982-06-16
EP0039906B1 EP0039906B1 (en) 1986-09-17

Family

ID=26846063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810103455 Expired EP0039906B1 (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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4168450A (en) * 1976-07-19 1979-09-18 Hitachi, Ltd. Slot type shadow mask
GB2020892A (en) * 1978-05-10 1979-11-21 Rca Corp C.R.T. Silt Type Shadow Mask
GB2067827A (en) * 1979-12-18 1981-07-30 Rca Corp Colour picture tube having slit type shadow mask

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881762U (en) * 1971-12-30 1973-10-05
US3916243A (en) * 1974-09-20 1975-10-28 Buckbee Mears Co Channeled shadow mask

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4168450A (en) * 1976-07-19 1979-09-18 Hitachi, Ltd. Slot type shadow mask
GB2020892A (en) * 1978-05-10 1979-11-21 Rca Corp C.R.T. Silt Type Shadow Mask
GB2067827A (en) * 1979-12-18 1981-07-30 Rca Corp Colour picture tube having slit type shadow mask

Also Published As

Publication number Publication date
CA1175876A (en) 1984-10-09
JPH0713158Y2 (en) 1995-03-29
JPH069043U (en) 1994-02-04
EP0039906B1 (en) 1986-09-17
BR8102909A (en) 1982-02-02
EP0039906A2 (en) 1981-11-18
DE3175329D1 (en) 1986-10-23
AR223591A1 (en) 1981-08-31

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