JPS5452975A - Fluorescent screen excposure method for color braun tube - Google Patents
Fluorescent screen excposure method for color braun tubeInfo
- Publication number
- JPS5452975A JPS5452975A JP11959577A JP11959577A JPS5452975A JP S5452975 A JPS5452975 A JP S5452975A JP 11959577 A JP11959577 A JP 11959577A JP 11959577 A JP11959577 A JP 11959577A JP S5452975 A JPS5452975 A JP S5452975A
- Authority
- JP
- Japan
- Prior art keywords
- light
- film
- light source
- exposure
- color
- 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
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
PURPOSE: To secure a high-accuracy and easy alteration of the white current ratio when the light absorbing layer is formed between the stripe-type 3-color flurorescent substances, by carrying out the light illumination exposure to the photo resist film for formation of the light absorbing layer while varying the length of the linear light source.
CONSTITUTION: When the light abosrbing layer is formed between the stripe-type 3-color fluorescent substances, photo resist film 9 is formed on the inner surface of face plate 7. Then the light from linear light source 8 is irradiated through aperture 4 of slot-type shadow mask 3 located near film 9 to perlorm the exposure to film 9. In this case, the light source length larger than optimum wavelength A0 is applied for the exposure to resist film 9 corresponding to G of the 3-color fluorescent substance, and the light source length smaller then A0 is used for film 9 corresponding to B and R respectively. In this way, the ratio of the luminous area can be varied easily between the 3-color fluorescent elements R, G and B, thus ensuring a high-accuracy white current ratio as desired
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11959577A JPS5452975A (en) | 1977-10-04 | 1977-10-04 | Fluorescent screen excposure method for color braun tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11959577A JPS5452975A (en) | 1977-10-04 | 1977-10-04 | Fluorescent screen excposure method for color braun tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5452975A true JPS5452975A (en) | 1979-04-25 |
Family
ID=14765265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11959577A Pending JPS5452975A (en) | 1977-10-04 | 1977-10-04 | Fluorescent screen excposure method for color braun tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5452975A (en) |
-
1977
- 1977-10-04 JP JP11959577A patent/JPS5452975A/en active Pending
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