JPS6454645A - Color picture tube - Google Patents
Color picture tubeInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-26 JP JP21028787A patent/JP2507466B2/en not_active Expired - Lifetime
Cited By (3)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080402 Year of fee payment: 12 |