JPS57147852A - Mask convergence-type color picture tube - Google Patents
Mask convergence-type color picture tubeInfo
- Publication number
- JPS57147852A JPS57147852A JP3315881A JP3315881A JPS57147852A JP S57147852 A JPS57147852 A JP S57147852A JP 3315881 A JP3315881 A JP 3315881A JP 3315881 A JP3315881 A JP 3315881A JP S57147852 A JPS57147852 A JP S57147852A
- Authority
- JP
- Japan
- Prior art keywords
- convergence
- distance
- mask
- optimum
- aperture mask
- 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
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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
- H01J29/81—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching using shadow masks
Abstract
PURPOSE:To obtain the uniform mask convergence effect and an excellent regenerated high bright picture in a whole picture screen, by making the curvature of the first aperture mask placed on a fluorescent surface side different from the curvature of the second aperture mask placed on an electron gun side. CONSTITUTION:According as the distance between 3 and 4 of the first and second aperture mask is made large, the convergence effect decreases, according as said distance is small, said effect increases, and thereby slippage from the optimum value of beam size caused by q-change can be corrected. Consequently, the distance between masks is set in the predetermined value so that the center or the circumference of the picture screen may be in optimum conditions, and thereby the optimum convergence conditions can be obtained in the whole picture screen. Thus, a high bright, excellent picture can be obtained without inviting the guard-band decrease, brightness-irregularity and color-temperature unevenness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3315881A JPS57147852A (en) | 1981-03-10 | 1981-03-10 | Mask convergence-type color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3315881A JPS57147852A (en) | 1981-03-10 | 1981-03-10 | Mask convergence-type color picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57147852A true JPS57147852A (en) | 1982-09-11 |
Family
ID=12378755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3315881A Pending JPS57147852A (en) | 1981-03-10 | 1981-03-10 | Mask convergence-type color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57147852A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552698A (en) * | 1978-06-22 | 1980-01-10 | Parcor | Thienooor furopyridone derivative* its manufacture and therapeutic composition containing it |
-
1981
- 1981-03-10 JP JP3315881A patent/JPS57147852A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552698A (en) * | 1978-06-22 | 1980-01-10 | Parcor | Thienooor furopyridone derivative* its manufacture and therapeutic composition containing it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1165766A (en) | Improvements in Cathode Ray Tubes for Colour Television | |
| GB1499304A (en) | Optical correction lens | |
| GB1065149A (en) | Improvements in or relating to the production of screens for colour cathode ray tubes | |
| JPS57147852A (en) | Mask convergence-type color picture tube | |
| JPS5335366A (en) | Color picture tube | |
| GB807129A (en) | Improvements in or relating to colour-television picture tubes | |
| JPS5438762A (en) | Color picture tube | |
| US3484638A (en) | Shadow mask mounted in glass envelope of color tv picture tube | |
| GB1358811A (en) | Cathode-ray tube having an apertured mask | |
| EP0952603A3 (en) | Color cathode-ray tube & method for manufacturing the same | |
| JPS5399760A (en) | Color picture tube | |
| GB1331716A (en) | Method of producing an apertured mask for a colour television cathode ray tube | |
| JPS5723446A (en) | Shadow mask for color picture tube | |
| GB1452137A (en) | Correction lenses utilized to form fluorescent screens of colour picture tubes | |
| JPS554877A (en) | Color cathode-ray tube | |
| GB1384167A (en) | Shadow mask colour picture tube and method of fabrication | |
| JPS5311568A (en) | Color picture tube | |
| JPS55141045A (en) | Beam index system color cathode-ray tube | |
| JPS5790850A (en) | Color cathode ray tube | |
| JPS5564347A (en) | Shadow mask for color image pick-up tube | |
| GB1370082A (en) | Exposure device for manufacturing colour picture tubes | |
| JPS548454A (en) | Manufacture of color cathode-ray tube shadow mask | |
| JPS5361265A (en) | Metal coating of color cathode-ray tube fluorescent screen | |
| JPS56106352A (en) | Electron gun frame for color picture tube | |
| GB1153773A (en) | Apparatus for Producing Phosphor Screens in Color Television Tubes |