JPS57157440A - Color cathode-ray tube - Google Patents

Color cathode-ray tube

Info

Publication number
JPS57157440A
JPS57157440A JP4216981A JP4216981A JPS57157440A JP S57157440 A JPS57157440 A JP S57157440A JP 4216981 A JP4216981 A JP 4216981A JP 4216981 A JP4216981 A JP 4216981A JP S57157440 A JPS57157440 A JP S57157440A
Authority
JP
Japan
Prior art keywords
symmetrically
width
axial
chromatic
approaching
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
JP4216981A
Other languages
Japanese (ja)
Inventor
Yukiro Yamaguchi
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 JP4216981A priority Critical patent/JPS57157440A/en
Publication of JPS57157440A publication Critical patent/JPS57157440A/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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To eliminate unnatural sense in viewing by setting the dot diameter or stripe width of the fluorescent substance and the opening diameter or width of the chromatic selecting electrode to becoming smaller axial symmetrically in the central part of the picture field and nonaxial symmetrically in the peripheral zone as approaching the edges more and more. CONSTITUTION:Dot diameter or stripe width of a fluorescent substance and the opening diameter or width of a chromatic selecting electrode are so constructed as to change axial symmetrically in the central area of the picture field and non-axial symmetrically, reducing, in the peripheral zone as approaching the edges. This gives a sufficiently high brightness to the central area as well as the axial symmetricity will reduce unnatural sense in viewing and also enlarge the tolerance in all peripheral zones of the field.
JP4216981A 1981-03-23 1981-03-23 Color cathode-ray tube Pending JPS57157440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4216981A JPS57157440A (en) 1981-03-23 1981-03-23 Color cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4216981A JPS57157440A (en) 1981-03-23 1981-03-23 Color cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS57157440A true JPS57157440A (en) 1982-09-29

Family

ID=12628462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4216981A Pending JPS57157440A (en) 1981-03-23 1981-03-23 Color cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS57157440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933797A1 (en) * 1998-01-30 1999-08-04 Hitachi, Ltd. Cathode ray tube

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021671A (en) * 1973-05-23 1975-03-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5021671A (en) * 1973-05-23 1975-03-07

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933797A1 (en) * 1998-01-30 1999-08-04 Hitachi, Ltd. Cathode ray tube
US6534907B1 (en) 1998-01-30 2003-03-18 Hitachi, Ltd. Cathode ray tube faceplate having particular black matrix hole transmittivity in the peripheral areas
US6765344B2 (en) 1998-01-30 2004-07-20 Hitachi, Ltd. Cathode ray tube having specific radius of curvatures for inner and outer surface of the panel

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