JPS5249764A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS5249764A
JPS5249764A JP12530275A JP12530275A JPS5249764A JP S5249764 A JPS5249764 A JP S5249764A JP 12530275 A JP12530275 A JP 12530275A JP 12530275 A JP12530275 A JP 12530275A JP S5249764 A JPS5249764 A JP S5249764A
Authority
JP
Japan
Prior art keywords
picture tube
color picture
luminance
curvature
increased
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
JP12530275A
Other languages
Japanese (ja)
Inventor
Toshihiko Tanaka
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 JP12530275A priority Critical patent/JPS5249764A/en
Publication of JPS5249764A publication Critical patent/JPS5249764A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE: For the curvature of shadow mask of in-line system, the grouping ratio is made constant and further made close to 1. Thus, the beam arrangement is improved as well as color purity, luminance, etc. is increased.
COPYRIGHT: (C)1977,JPO&Japio
JP12530275A 1975-10-20 1975-10-20 Color picture tube Pending JPS5249764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12530275A JPS5249764A (en) 1975-10-20 1975-10-20 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12530275A JPS5249764A (en) 1975-10-20 1975-10-20 Color picture tube

Publications (1)

Publication Number Publication Date
JPS5249764A true JPS5249764A (en) 1977-04-21

Family

ID=14906711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12530275A Pending JPS5249764A (en) 1975-10-20 1975-10-20 Color picture tube

Country Status (1)

Country Link
JP (1) JPS5249764A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697119A (en) * 1985-01-11 1987-09-29 Kabushiki Kaisha Toshiba Color cathode ray tube having a non-spherical curved mask
US4701665A (en) * 1982-12-23 1987-10-20 Tokyo Shibaura Denki Kabushiki Kaisha Color cathode-ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701665A (en) * 1982-12-23 1987-10-20 Tokyo Shibaura Denki Kabushiki Kaisha Color cathode-ray tube
US4697119A (en) * 1985-01-11 1987-09-29 Kabushiki Kaisha Toshiba Color cathode ray tube having a non-spherical curved mask

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