JPS6417357A - Shadow mask type color cathode ray tube - Google Patents
Shadow mask type color cathode ray tubeInfo
- 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
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.
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) |
-
1987
- 1987-07-10 JP JP17331287A patent/JPS6417357A/en active Pending
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