JPS54159863A - Shadow mask for color braun tube - Google Patents

Shadow mask for color braun tube

Info

Publication number
JPS54159863A
JPS54159863A JP6948178A JP6948178A JPS54159863A JP S54159863 A JPS54159863 A JP S54159863A JP 6948178 A JP6948178 A JP 6948178A JP 6948178 A JP6948178 A JP 6948178A JP S54159863 A JPS54159863 A JP S54159863A
Authority
JP
Japan
Prior art keywords
evaporation
shadow mask
directivity
braun tube
current distribution
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
JP6948178A
Other languages
Japanese (ja)
Inventor
Hisashi Tagano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6948178A priority Critical patent/JPS54159863A/en
Publication of JPS54159863A publication Critical patent/JPS54159863A/en
Pending 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
    • H01J9/146—Surface treatment, e.g. blackening, coating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To achieve a high resolution by producing the high-density narrow-hole shadow mask plate for color Braun tube by a coating process, a heat treatment process, and a series of a continuous units after the conventional exposure-chemical ething holing process. CONSTITUTION:Metal is coated in a form of simple substance, alloy or composite layer on the mask substrate which was subjected to the holing process. In case of the electrochemical plating method, plating solution composition and electrode arrangement are selected properly to adjust the current distribution; and in case of the evaporation method, the directivity of evaporation is adjusted by the position of the evaporation source. Then, the current distribution and the evaporation directivity are utilized, so that the thickness of substrate 21 can be made thick without chaning the inside diameter of narrow hole 22 considerably.
JP6948178A 1978-06-08 1978-06-08 Shadow mask for color braun tube Pending JPS54159863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6948178A JPS54159863A (en) 1978-06-08 1978-06-08 Shadow mask for color braun tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6948178A JPS54159863A (en) 1978-06-08 1978-06-08 Shadow mask for color braun tube

Publications (1)

Publication Number Publication Date
JPS54159863A true JPS54159863A (en) 1979-12-18

Family

ID=13403923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6948178A Pending JPS54159863A (en) 1978-06-08 1978-06-08 Shadow mask for color braun tube

Country Status (1)

Country Link
JP (1) JPS54159863A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125075A1 (en) 1980-07-16 1982-03-11 Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven "COLORED PIPES"
JPS6026164U (en) * 1983-07-28 1985-02-22 大日本印刷株式会社 Color picture tube shadow mask

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125075A1 (en) 1980-07-16 1982-03-11 Naamloze Vennootschap Philips' Gloeilampenfabrieken, 5621 Eindhoven "COLORED PIPES"
US4442376A (en) * 1980-07-16 1984-04-10 U.S. Philips Corporation Color display tube having heavy metal coating on color selection electrode
JPS6026164U (en) * 1983-07-28 1985-02-22 大日本印刷株式会社 Color picture tube shadow mask

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