JPS54111278A - Forming method for fluorescent face of color picture tube - Google Patents
Forming method for fluorescent face of color picture tubeInfo
- Publication number
- JPS54111278A JPS54111278A JP1896778A JP1896778A JPS54111278A JP S54111278 A JPS54111278 A JP S54111278A JP 1896778 A JP1896778 A JP 1896778A JP 1896778 A JP1896778 A JP 1896778A JP S54111278 A JPS54111278 A JP S54111278A
- Authority
- JP
- Japan
- Prior art keywords
- axis
- light
- shielding plate
- color
- light shielding
- 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
Landscapes
- Microscoopes, Condenser (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
PURPOSE: To improve the quality of a white color and make a service life long by using a light shielding plate in the fluorescent face of a color picture tube to perform the light exposure of pseudo-dots of a photo-sensitive resin film in all the surface with a uniform illumination intensity.
CONSTITUTION: Light shielding plate 8 is a metallic plate body where the edge shape has the curvature of curve C corresponding to approximately middle of the transmissivity curve of correcting filter 5, and is arranged between light source 1 and correcting lens 7 after all the surface of photosensitive resin film 6 is light- exposed until 92% of the maximum light exposure time. Then, symmetrical axis n of light shielding plate 8 is made agree with the light source G axis for violet color and is moved gradually from the g side of the G axis to the direction of the g' side in a prescribed time. After the light exposure of a green color, the light exposure of red and blue colors is performed similarly by making symmetrical axis n of light shielding plate 8 agree with the R axis and the B axis respectively. As a result, uniform pseudo-dots can be obtained to improve the quality of a white color, and make a service life long without oxidizing correcting filter 5 to change transmissivity.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1896778A JPS54111278A (en) | 1978-02-20 | 1978-02-20 | Forming method for fluorescent face of color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1896778A JPS54111278A (en) | 1978-02-20 | 1978-02-20 | Forming method for fluorescent face of color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54111278A true JPS54111278A (en) | 1979-08-31 |
Family
ID=11986417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1896778A Pending JPS54111278A (en) | 1978-02-20 | 1978-02-20 | Forming method for fluorescent face of color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54111278A (en) |
-
1978
- 1978-02-20 JP JP1896778A patent/JPS54111278A/en active Pending
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