JPS57176637A - Manufacture of braun tube - Google Patents

Manufacture of braun tube

Info

Publication number
JPS57176637A
JPS57176637A JP6119981A JP6119981A JPS57176637A JP S57176637 A JPS57176637 A JP S57176637A JP 6119981 A JP6119981 A JP 6119981A JP 6119981 A JP6119981 A JP 6119981A JP S57176637 A JPS57176637 A JP S57176637A
Authority
JP
Japan
Prior art keywords
bulb
aluminum
laser
light
vaporized
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
JP6119981A
Other languages
Japanese (ja)
Inventor
Koichi Nakajima
Yoshihiko Miyata
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 JP6119981A priority Critical patent/JPS57176637A/en
Publication of JPS57176637A publication Critical patent/JPS57176637A/en
Pending 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
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers

Abstract

PURPOSE:To form a thin metal back film for a very small Braun tube so that the film has satisfactorily regulated thickness and quality by constituting an optical system so that light of a laser installed outside a bulb is forcused just on an aluminum member located at a given position within the bulb. CONSTITUTION:Before vapor deposition is carried out, a glass bulb 1 is exhausted with a vacuum pump to a vacuum degree of around 10<-3>-10<-5> Torr. By means of a lens 5, a laser light 4a discharged from a laser generator 4, after penetrating the wall of the glass bulb 1, is focused just on the end of an aluminum wire 2. The aluminum wire 2, by thus irradiated by intense laser-light, is heated and vaporized, and thus vaporized aluminum is deposited as a metal back layer on the back surface of a fluorescent film formed on a bulb panel. Here, the heating and the vaporization of aluminum can be controlled by controlling the entire energy by discharging the laser light 4a in pulses.
JP6119981A 1981-04-24 1981-04-24 Manufacture of braun tube Pending JPS57176637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6119981A JPS57176637A (en) 1981-04-24 1981-04-24 Manufacture of braun tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6119981A JPS57176637A (en) 1981-04-24 1981-04-24 Manufacture of braun tube

Publications (1)

Publication Number Publication Date
JPS57176637A true JPS57176637A (en) 1982-10-30

Family

ID=13164265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6119981A Pending JPS57176637A (en) 1981-04-24 1981-04-24 Manufacture of braun tube

Country Status (1)

Country Link
JP (1) JPS57176637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134826A (en) * 1984-07-27 1986-02-19 Hitachi Ltd Manufacturing of cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134826A (en) * 1984-07-27 1986-02-19 Hitachi Ltd Manufacturing of cathode ray tube
JPH0527206B2 (en) * 1984-07-27 1993-04-20 Hitachi Ltd

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