JPS5641648A - Cathode ray tube - Google Patents

Cathode ray tube

Info

Publication number
JPS5641648A
JPS5641648A JP11725179A JP11725179A JPS5641648A JP S5641648 A JPS5641648 A JP S5641648A JP 11725179 A JP11725179 A JP 11725179A JP 11725179 A JP11725179 A JP 11725179A JP S5641648 A JPS5641648 A JP S5641648A
Authority
JP
Japan
Prior art keywords
arrangement
shadow mask
ray tube
characteristic
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.)
Pending
Application number
JP11725179A
Other languages
Japanese (ja)
Inventor
Yoshio Sato
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 JP11725179A priority Critical patent/JPS5641648A/en
Priority to US06/179,475 priority patent/US4370591A/en
Publication of JPS5641648A publication Critical patent/JPS5641648A/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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H01J29/076—Shadow masks for colour television tubes characterised by the shape or distribution of beam-passing apertures

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To improve the purity and overall picture quality of a cathode-ray tube, by lining a dot arrangement of a shadow mask in the direction of beam arrangement distorted by the curved face characteristic of a panel. CONSTITUTION:In an arrangement direction B of electron beams 3r, 3g, 3b in each point of a raster produced by the curved face characteristic of a panel and three inline electron beams in the corner part of a picture face, mask holes 1 are aligned to constitute a shadow mask 6. By the angle corresponding to an arrangement distortion angle theta of the electron beam, an arrangement direction (x) of the punched holes 1 is sloped with respect to the long axis direction X of the shadow mask to construct the shadow mask 6. In this way, a purity characteristic of a cathode-ray tube can be widely improved, and a high resolution and life characteristic can be improved.
JP11725179A 1979-09-14 1979-09-14 Cathode ray tube Pending JPS5641648A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11725179A JPS5641648A (en) 1979-09-14 1979-09-14 Cathode ray tube
US06/179,475 US4370591A (en) 1979-09-14 1980-08-18 Color picture tube shadow mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11725179A JPS5641648A (en) 1979-09-14 1979-09-14 Cathode ray tube

Publications (1)

Publication Number Publication Date
JPS5641648A true JPS5641648A (en) 1981-04-18

Family

ID=14707128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11725179A Pending JPS5641648A (en) 1979-09-14 1979-09-14 Cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5641648A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991634A (en) * 1982-11-17 1984-05-26 Mitsubishi Electric Corp Color picture tube
JPS6084739A (en) * 1983-06-30 1985-05-14 Mitsubishi Electric Corp Color picture tube
KR20000019963A (en) * 1998-09-16 2000-04-15 구자홍 Shadow mask for color braun tube
US6342759B1 (en) 1997-06-03 2002-01-29 Hitachi, Ltd. Color cathode ray tube having an improved phosphor screen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019909A (en) * 1973-06-28 1975-03-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019909A (en) * 1973-06-28 1975-03-03

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991634A (en) * 1982-11-17 1984-05-26 Mitsubishi Electric Corp Color picture tube
JPS6337933B2 (en) * 1982-11-17 1988-07-27 Mitsubishi Electric Corp
JPS6084739A (en) * 1983-06-30 1985-05-14 Mitsubishi Electric Corp Color picture tube
US4638212A (en) * 1983-06-30 1987-01-20 Mitsubishi Denki Kabushiki Kaisha Color cathode-ray tube
US6342759B1 (en) 1997-06-03 2002-01-29 Hitachi, Ltd. Color cathode ray tube having an improved phosphor screen
KR20000019963A (en) * 1998-09-16 2000-04-15 구자홍 Shadow mask for color braun tube

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