JPS6417357A - Shadow mask type color cathode ray tube - Google Patents

Shadow mask type color cathode ray tube

Info

Publication number
JPS6417357A
JPS6417357A JP17331287A JP17331287A JPS6417357A JP S6417357 A JPS6417357 A JP S6417357A JP 17331287 A JP17331287 A JP 17331287A JP 17331287 A JP17331287 A JP 17331287A JP S6417357 A JPS6417357 A JP S6417357A
Authority
JP
Japan
Prior art keywords
shadow mask
frame
ray tube
cathode ray
color 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
JP17331287A
Other languages
Japanese (ja)
Inventor
Takashi Sugawara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP17331287A priority Critical patent/JPS6417357A/en
Publication of JPS6417357A publication Critical patent/JPS6417357A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a shadow mask from any local deformation caused by heating, so as to improve the quality of the picture of a color cathode ray tube through elimination of any color shifting by forming a frame with Invar alloy and jointing axially symmetrically the frame and the body of a shadow mask on at least more than 16 welding points. CONSTITUTION:A frame 5 jointed to the body of a shadow mask 2 is formed with Invar alloy and this frame 5 and the body of the shadow mask 2 are jointed to each other axially symmetrically on at least, more than 16 welding points M. Accordingly, a material of the frame 5 is formed with the Invar alloy which is same as the material of the body of the shadow mask 2 and their thermal expansion coefficients are equal to each other so that even if the body of the shadow mask 2 and the frame 5 are expanded during a thermal treatment process, the difference in their thermal expansion can be cancelled and also the shadow mask 2 can be prevented from any local deformation caused by heating.
JP17331287A 1987-07-10 1987-07-10 Shadow mask type color cathode ray tube Pending JPS6417357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17331287A JPS6417357A (en) 1987-07-10 1987-07-10 Shadow mask type color cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17331287A JPS6417357A (en) 1987-07-10 1987-07-10 Shadow mask type color cathode ray tube

Publications (1)

Publication Number Publication Date
JPS6417357A true JPS6417357A (en) 1989-01-20

Family

ID=15958111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17331287A Pending JPS6417357A (en) 1987-07-10 1987-07-10 Shadow mask type color cathode ray tube

Country Status (1)

Country Link
JP (1) JPS6417357A (en)

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