JPS6477845A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS6477845A
JPS6477845A JP23217587A JP23217587A JPS6477845A JP S6477845 A JPS6477845 A JP S6477845A JP 23217587 A JP23217587 A JP 23217587A JP 23217587 A JP23217587 A JP 23217587A JP S6477845 A JPS6477845 A JP S6477845A
Authority
JP
Japan
Prior art keywords
membrane
metal back
generated
water glass
black
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.)
Pending
Application number
JP23217587A
Other languages
Japanese (ja)
Inventor
Yasukazu Morita
Yasuhiko Uehara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP23217587A priority Critical patent/JPS6477845A/en
Publication of JPS6477845A publication Critical patent/JPS6477845A/en
Pending legal-status Critical Current

Links

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To suppress a blackening fading and to obtain a color picture tube of little doming by providing an oxidation preventive membrane, which is stable thermally and discharges no unnecessary gas and the like, on a metal black membrane. CONSTITUTION:Even though a baking process is carried out by spreading a water glass membrane 7 on the surface of a black metal back membrane 6, no oxidation reaction is generated by contacting a white metal back membrane 5 and the black metal back membrane 6 directly to the oxygen in the air. Consequently, no gamma<-> alumina is produced and the black metal back membrane 6 can maintain the blackening rate at the level perfectly same as that after the vacuum evaporation, and also no swelling, removal, or the like is generated. In this case, by enlarging the thickness of the water glass membrane 7, a swelling is generated because the gas produced from the organic substance can not escape easily, and by making it smaller, the oxidation preventive effect cannot be obtained. Therefore, the thickness of the water glass membrane 7 is preferable to be in the range of 0.1 to 2.0mum.
JP23217587A 1987-09-18 1987-09-18 Color picture tube Pending JPS6477845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23217587A JPS6477845A (en) 1987-09-18 1987-09-18 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23217587A JPS6477845A (en) 1987-09-18 1987-09-18 Color picture tube

Publications (1)

Publication Number Publication Date
JPS6477845A true JPS6477845A (en) 1989-03-23

Family

ID=16935179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23217587A Pending JPS6477845A (en) 1987-09-18 1987-09-18 Color picture tube

Country Status (1)

Country Link
JP (1) JPS6477845A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536351A (en) * 1991-07-30 1993-02-12 Mitsubishi Rayon Co Ltd Formation of undercoat film for crt aluminum back
JPH05109357A (en) * 1991-07-30 1993-04-30 Mitsubishi Rayon Co Ltd Aluminum back undercoating film forming method for cathode-ray tube
WO2002037522A1 (en) * 2000-10-31 2002-05-10 Kabushiki Kaisha Toshiba Fluorescent material layer with metal back, method of forming the fluorescent material layer, and image display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536351A (en) * 1991-07-30 1993-02-12 Mitsubishi Rayon Co Ltd Formation of undercoat film for crt aluminum back
JPH05109357A (en) * 1991-07-30 1993-04-30 Mitsubishi Rayon Co Ltd Aluminum back undercoating film forming method for cathode-ray tube
WO2002037522A1 (en) * 2000-10-31 2002-05-10 Kabushiki Kaisha Toshiba Fluorescent material layer with metal back, method of forming the fluorescent material layer, and image display device
US6833663B2 (en) 2000-10-31 2004-12-21 Kabushiki Kaisha Toshiba Fluorescent material layer with metal back, method of forming the fluorescent material layer, and image display device

Similar Documents

Publication Publication Date Title
JPS6477845A (en) Color picture tube
JPS5439191A (en) Oxygen detector
JPS5320769A (en) Plasma etching method of metal electrodes
JPS5221714A (en) Solid stage scanning photo-electronic conversion
JPS52151555A (en) Manufacture of luminous screen
JPS52110273A (en) Method and apparatus for exhausting hydrogen
JPS547288A (en) Observation window for sealed container
JPS53118967A (en) Fluorescent screen
JPS5419663A (en) Forming method of insulating films
JPS57135836A (en) Glow discharge treatment
JPS53135564A (en) Thermal cathode and its manufacture
JPS56152140A (en) Color cathode ray tube
JPS54859A (en) Color picture tube
JPS6483655A (en) Sputtering film formation
JPS53126859A (en) Field radiation type electronic gun
JPS52122956A (en) Dry processing method of compost
JPS5556334A (en) Manufacturing method of fluorescent layer
JPS5285997A (en) Purification of alkali
JPS5464473A (en) High pressure oxidizing method of silicon
JPS5427767A (en) Single crystal growing method of multielement semiconductors
JPS5346267A (en) Manufacture for color receiving tube fluorescent screen
JPS53137838A (en) Method of oxidizing anode
JPS53134359A (en) Flat electron source
JPS57134847A (en) Shadow mask
JPS5255468A (en) Electron tube containing ceramic surrounding parts