JPS5790843A - Forming method of fluorescent screen of picture tube - Google Patents

Forming method of fluorescent screen of picture tube

Info

Publication number
JPS5790843A
JPS5790843A JP16653980A JP16653980A JPS5790843A JP S5790843 A JPS5790843 A JP S5790843A JP 16653980 A JP16653980 A JP 16653980A JP 16653980 A JP16653980 A JP 16653980A JP S5790843 A JPS5790843 A JP S5790843A
Authority
JP
Japan
Prior art keywords
aqueous solution
panel
face plate
washing
plate panel
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
JP16653980A
Other languages
Japanese (ja)
Other versions
JPH0345503B2 (en
Inventor
Koichi Nakazato
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 JP16653980A priority Critical patent/JPS5790843A/en
Publication of JPS5790843A publication Critical patent/JPS5790843A/en
Publication of JPH0345503B2 publication Critical patent/JPH0345503B2/ja
Granted 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2209/00—Apparatus and processes for manufacture of discharge tubes
    • H01J2209/01—Generalised techniques
    • H01J2209/017—Cleaning

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE:To secure certain washing effect without any evil influence upon the human body or the like, by washing the inside of a face plate panel with an aqueous solution containing alkali metal hydroxide before spreading a phosphor layer on the panel. CONSTITUTION:An aqueous solution 2 mixed with sodium hydroxide by about 30wt% is poured in a tank 1, and kept warm at a temperature of about 50 deg.C. Then, a face plate panel 3 is put in the solution 2 before spreading a phosphor layer on it, and applied with ultrasonic waves by an ultrasonic generator. Thereafter, the face plate panel 3 is picked out, and sodium hydroxide deposited on the peripheral surface, of the panel 3 is removed by washing. Accordingly a washing effect equal to an usual process using the aqueous solution of hydrofluoric acid can be secured without any evil influence upon the human body or production facilities, and a fluorescent screen of high quality can be made, by utilizing the characteristic of the aqueous solution of alkali metal hydroxide dissolving glass or stains of oil or the like repelling water.
JP16653980A 1980-11-28 1980-11-28 Forming method of fluorescent screen of picture tube Granted JPS5790843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16653980A JPS5790843A (en) 1980-11-28 1980-11-28 Forming method of fluorescent screen of picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16653980A JPS5790843A (en) 1980-11-28 1980-11-28 Forming method of fluorescent screen of picture tube

Publications (2)

Publication Number Publication Date
JPS5790843A true JPS5790843A (en) 1982-06-05
JPH0345503B2 JPH0345503B2 (en) 1991-07-11

Family

ID=15833151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16653980A Granted JPS5790843A (en) 1980-11-28 1980-11-28 Forming method of fluorescent screen of picture tube

Country Status (1)

Country Link
JP (1) JPS5790843A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0212737A (en) * 1988-06-30 1990-01-17 Nec Corp Color cathode-ray tube panel washing device
JPH02301945A (en) * 1989-05-15 1990-12-14 Mitsubishi Electric Corp Projecting type cathode-ray tube
JPH0554804A (en) * 1991-08-26 1993-03-05 Mitsubishi Electric Corp Method for salvaging glass panel for use in projection type cathode-ray tube equipped with multiple interference film
JPH06187909A (en) * 1992-12-15 1994-07-08 Mitsubishi Electric Corp Cleaning method for glass panel for cathode-ray tube
JPH07155713A (en) * 1993-12-03 1995-06-20 Hakusui Sangyo:Kk Cleaning method of fluorescent screen of cathode-ray tube

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4510020Y1 (en) * 1967-08-19 1970-05-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4510020Y1 (en) * 1967-08-19 1970-05-09

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0212737A (en) * 1988-06-30 1990-01-17 Nec Corp Color cathode-ray tube panel washing device
JPH02301945A (en) * 1989-05-15 1990-12-14 Mitsubishi Electric Corp Projecting type cathode-ray tube
JPH0554804A (en) * 1991-08-26 1993-03-05 Mitsubishi Electric Corp Method for salvaging glass panel for use in projection type cathode-ray tube equipped with multiple interference film
JPH06187909A (en) * 1992-12-15 1994-07-08 Mitsubishi Electric Corp Cleaning method for glass panel for cathode-ray tube
JPH07155713A (en) * 1993-12-03 1995-06-20 Hakusui Sangyo:Kk Cleaning method of fluorescent screen of cathode-ray tube

Also Published As

Publication number Publication date
JPH0345503B2 (en) 1991-07-11

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