JPS6454645A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS6454645A
JPS6454645A JP62210287A JP21028787A JPS6454645A JP S6454645 A JPS6454645 A JP S6454645A JP 62210287 A JP62210287 A JP 62210287A JP 21028787 A JP21028787 A JP 21028787A JP S6454645 A JPS6454645 A JP S6454645A
Authority
JP
Japan
Prior art keywords
axis
curvature
effective
diameter end
effective diameter
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
JP62210287A
Other languages
Japanese (ja)
Other versions
JP2507466B2 (en
Inventor
Masachika Inoue
Kiyoshi Tokita
Toshihisa Sone
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP21028787A priority Critical patent/JP2507466B2/en
Priority to US07/236,184 priority patent/US4881004A/en
Priority to EP88113882A priority patent/EP0304922B1/en
Priority to CN88106242A priority patent/CN1032395C/en
Priority to DE3851811T priority patent/DE3851811T2/en
Priority to KR8810926A priority patent/KR920003354B1/en
Publication of JPS6454645A publication Critical patent/JPS6454645A/en
Priority to CN 91104985 priority patent/CN1022961C/en
Priority to KR9201441A priority patent/KR920003355B1/en
Application granted granted Critical
Publication of JP2507466B2 publication Critical patent/JP2507466B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To check any thermal deformation in a shadow mask by making the major axial radius of curvature on an effective curved surface smaller in a side in and around a minor axis effective diameter end than the central part and making the diagonal axial end vicinity larger than the major axis effective diameter end vicinity. CONSTITUTION:A shadow mask 36 tructure 32 consists of a rectangular mask frame 34 and a curved shadow mask provided with a lot of through holes, and these through holes are formed in a rectangular area 33 with a slit along a Y-axis direction in response to stripes of a fluorescent screen 30, and this area 33 serves as an effective area for image projection. With the center O of an effective curved surface as a reference point, a major axis is set to an X-axis, a minor axis to a Y-axis and the center axis to a Z-axis, respectively. An X-axial radius of curvature in the minor axis effective diameter end vicinity is made smaller than an X-axial radius of curvature in and around the central part of the effective surved surface, and an X-axial radius of curvature in and around the diagonal effective diameter end is made larger than the X-axial radius of curvature in and around the major axis effective diameter end. Thus, thermal deformation in the shadow mask is checkable.
JP21028787A 1987-08-26 1987-08-26 Color picture tube Expired - Lifetime JP2507466B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP21028787A JP2507466B2 (en) 1987-08-26 1987-08-26 Color picture tube
US07/236,184 US4881004A (en) 1987-08-26 1988-08-24 Color cathode ray tube
CN88106242A CN1032395C (en) 1987-08-26 1988-08-25 Colour cathode-ray tube
DE3851811T DE3851811T2 (en) 1987-08-26 1988-08-25 Color picture tube.
EP88113882A EP0304922B1 (en) 1987-08-26 1988-08-25 Color cathode ray tube
KR8810926A KR920003354B1 (en) 1987-08-26 1988-08-26 Color picture tube
CN 91104985 CN1022961C (en) 1987-08-26 1991-07-22 Color cathode ray tube
KR9201441A KR920003355B1 (en) 1987-08-26 1992-01-30 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21028787A JP2507466B2 (en) 1987-08-26 1987-08-26 Color picture tube

Publications (2)

Publication Number Publication Date
JPS6454645A true JPS6454645A (en) 1989-03-02
JP2507466B2 JP2507466B2 (en) 1996-06-12

Family

ID=16586899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21028787A Expired - Lifetime JP2507466B2 (en) 1987-08-26 1987-08-26 Color picture tube

Country Status (1)

Country Link
JP (1) JP2507466B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000067284A1 (en) * 1999-04-28 2000-11-09 Hitachi, Ltd. Color cathode-ray tube
EP1115138A2 (en) * 2000-01-06 2001-07-11 Lg Electronics Inc. Color cathode ray tube
WO2002045118A1 (en) * 2000-11-28 2002-06-06 Orion Electric Co., Ltd. Shadow mask for color cathode ray tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000067284A1 (en) * 1999-04-28 2000-11-09 Hitachi, Ltd. Color cathode-ray tube
EP1115138A2 (en) * 2000-01-06 2001-07-11 Lg Electronics Inc. Color cathode ray tube
WO2002045118A1 (en) * 2000-11-28 2002-06-06 Orion Electric Co., Ltd. Shadow mask for color cathode ray tube

Also Published As

Publication number Publication date
JP2507466B2 (en) 1996-06-12

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