JPS54116874A - Manufacture of color picture tube - Google Patents
Manufacture of color picture tubeInfo
- Publication number
- JPS54116874A JPS54116874A JP2347878A JP2347878A JPS54116874A JP S54116874 A JPS54116874 A JP S54116874A JP 2347878 A JP2347878 A JP 2347878A JP 2347878 A JP2347878 A JP 2347878A JP S54116874 A JPS54116874 A JP S54116874A
- Authority
- JP
- Japan
- Prior art keywords
- solution
- fluorescent
- film
- viscosity
- filming
- 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 improve the luminous efficiency of a fluorescent screen with infiltration into fluorescent particles prevented by increasing the viscosity of a filming solution on a fluorescent film surface by using the filming solution of low viscosity.
CONSTITUTION: Fluorescent film 2 formed on the internal surface of face panel 1 is made wet by an alkali solution and the surface of this wet fluorescent film 2 is applied with a boric acid complex solution of polyvinyl alcohol whose viscosity increases by alkali. As a result, the solution increases in viscosity at the entrance of many small gaps among fluorescent particles 4 and will not infiltrate inside, and after drying, the small-gap entrance is covered with resin film 3. Coating this film 3 with a filming solution forms a coating with its surface uniform with out infiltrating into particles 4, so that the luminous efficiency of the fluorescent screen can be improved. For the alkali solution mentioned above, aqueous ammonia of pH9 is suitable and for polyvinyl alcohol, a uni-size solution of 2% is suitable.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347878A JPS54116874A (en) | 1978-03-03 | 1978-03-03 | Manufacture of color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2347878A JPS54116874A (en) | 1978-03-03 | 1978-03-03 | Manufacture of color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54116874A true JPS54116874A (en) | 1979-09-11 |
Family
ID=12111627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2347878A Pending JPS54116874A (en) | 1978-03-03 | 1978-03-03 | Manufacture of color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54116874A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59184434A (en) * | 1983-04-01 | 1984-10-19 | Hitachi Ltd | Manufacture of cathode-ray tube fluorescent film |
JPS6032234A (en) * | 1983-08-03 | 1985-02-19 | Hitachi Ltd | Formation of filming film of cathode-ray tube |
-
1978
- 1978-03-03 JP JP2347878A patent/JPS54116874A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59184434A (en) * | 1983-04-01 | 1984-10-19 | Hitachi Ltd | Manufacture of cathode-ray tube fluorescent film |
JPS6032234A (en) * | 1983-08-03 | 1985-02-19 | Hitachi Ltd | Formation of filming film of cathode-ray tube |
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