JPS57121137A - Color cathode-ray tube - Google Patents

Color cathode-ray tube

Info

Publication number
JPS57121137A
JPS57121137A JP739581A JP739581A JPS57121137A JP S57121137 A JPS57121137 A JP S57121137A JP 739581 A JP739581 A JP 739581A JP 739581 A JP739581 A JP 739581A JP S57121137 A JPS57121137 A JP S57121137A
Authority
JP
Japan
Prior art keywords
electric potential
electrode
color
epf
ehv
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
JP739581A
Other languages
Japanese (ja)
Inventor
Satoshi Shimada
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP739581A priority Critical patent/JPS57121137A/en
Publication of JPS57121137A publication Critical patent/JPS57121137A/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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • H01J29/81—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching using shadow masks

Abstract

PURPOSE:To prevent any generation of moires or shadows by adjusting the electric potential of a color selecting electrode to be higher than that of a color fluorescent surface, and adjusting the difference between these electric potentials to be sufficient to remove lateral shadows, which divide the beam transmitting holes during the scanning of electron beams. CONSTITUTION:The electric potential of a color selecting electrode 3 is set higher than that of a color fluorescent surface 1. When electron beam scanning is carried out by giving a reduced-speed concave-lens electric field between the electrode 3 and the surface 1, an electron beam scanning area 8, which has slightly larger length and width than the area of a beam transmitting hole 5 of a slot mask, is obtained on the surface 1 as is indicated with a dot line, thereby extinguishing the lateral images of a cross linking part 6. As is indicated in the figure, a high electric potential EHV is given to the surface 1, and a higher electric potential EG, which equals the sum of EHV and EPF is given to the electrode 3. Here, an electric potential difference EPF should be made enough to extinguish exactly the lateral images of the part 6.
JP739581A 1981-01-20 1981-01-20 Color cathode-ray tube Pending JPS57121137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP739581A JPS57121137A (en) 1981-01-20 1981-01-20 Color cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP739581A JPS57121137A (en) 1981-01-20 1981-01-20 Color cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS57121137A true JPS57121137A (en) 1982-07-28

Family

ID=11664713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP739581A Pending JPS57121137A (en) 1981-01-20 1981-01-20 Color cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS57121137A (en)

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