JPS5744945A - Cathode-ray tube - Google Patents

Cathode-ray tube

Info

Publication number
JPS5744945A
JPS5744945A JP12037680A JP12037680A JPS5744945A JP S5744945 A JPS5744945 A JP S5744945A JP 12037680 A JP12037680 A JP 12037680A JP 12037680 A JP12037680 A JP 12037680A JP S5744945 A JPS5744945 A JP S5744945A
Authority
JP
Japan
Prior art keywords
mesh
central portion
peripheral portion
opening
cathode
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
JP12037680A
Other languages
Japanese (ja)
Other versions
JPS6014460B2 (en
Inventor
Masayuki Hokao
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
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 Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP12037680A priority Critical patent/JPS6014460B2/en
Publication of JPS5744945A publication Critical patent/JPS5744945A/en
Publication of JPS6014460B2 publication Critical patent/JPS6014460B2/en
Expired 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

Abstract

PURPOSE:To prevent the generation of display distortion caused by distorted molding of a mesh electrode and luminance by a method wherein an area of mesh opening in the peripheral portion of the mesh electrode is made smaller than that of mesh opening in the central portion. CONSTITUTION:A plane mesh member 14 is welded or joined by pressure to ring support frames 13a, 13b to hold and stretch the member. Then the central portion of the member is allowed to swell out to form a spherical surface, or a spherical mesh, using a press. An area S of mesh opening in the peripheral portion 14a of the mesh 14 is made smaller than that S' of mesh opening of its central portion 14b. By so doing, the strength of the peripheral portion of the mesh is improved, while the appearance of creases after the mesh has been molded in the spherical form can be prevented. Thus a cathode-ray tube free from display distortion and irregular luminance is obtainable.
JP12037680A 1980-08-29 1980-08-29 cathode ray tube Expired JPS6014460B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12037680A JPS6014460B2 (en) 1980-08-29 1980-08-29 cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12037680A JPS6014460B2 (en) 1980-08-29 1980-08-29 cathode ray tube

Publications (2)

Publication Number Publication Date
JPS5744945A true JPS5744945A (en) 1982-03-13
JPS6014460B2 JPS6014460B2 (en) 1985-04-13

Family

ID=14784671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12037680A Expired JPS6014460B2 (en) 1980-08-29 1980-08-29 cathode ray tube

Country Status (1)

Country Link
JP (1) JPS6014460B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63195937A (en) * 1987-02-04 1988-08-15 テクトロニックス・インコーポレイテッド Deflection magnifying lens and cathode ray tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02121506U (en) * 1989-03-17 1990-10-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63195937A (en) * 1987-02-04 1988-08-15 テクトロニックス・インコーポレイテッド Deflection magnifying lens and cathode ray tube

Also Published As

Publication number Publication date
JPS6014460B2 (en) 1985-04-13

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