JPS5648615A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS5648615A JPS5648615A JP12579179A JP12579179A JPS5648615A JP S5648615 A JPS5648615 A JP S5648615A JP 12579179 A JP12579179 A JP 12579179A JP 12579179 A JP12579179 A JP 12579179A JP S5648615 A JPS5648615 A JP S5648615A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- films
- coating
- ultraviolet ray
- 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
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To effectively prevent the deterioration of liquid crystal owing to ultraviolet rays by coating polyimide-base high polymer films on the inside and outside surfaces of substrates having transparent conductive films of a liquid crystal display device.
CONSTITUTION: A soln. of polyamic acid obtained by condensation of dicarboxylic acid anhydride and diamine is coated on the inside and outside surfaces of glass substrates 1, 2 having transparent conductive films 3, 4, after which it heat-treated to cause dehydration ring closure, whereby polyimide films 10, 11 are formed. Although coating this on the electrodes 3, 4 only is effective, coating on respective both surfaces of the substrates 1, 2 is more effective. Since the polyimide films per se have ultraviolet ray absorbancy in this way, there is no need for using any polarizing film having ultraviolet ray absorbing layer or ultraviolet absorbing filter and the ultraviolet ray deterioration of the display device is prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12579179A JPS5648615A (en) | 1979-09-28 | 1979-09-28 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12579179A JPS5648615A (en) | 1979-09-28 | 1979-09-28 | Liquid crystal display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5648615A true JPS5648615A (en) | 1981-05-01 |
Family
ID=14918950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12579179A Pending JPS5648615A (en) | 1979-09-28 | 1979-09-28 | Liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5648615A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5165960A (en) * | 1974-12-04 | 1976-06-08 | Dainippon Printing Co Ltd | |
JPS5231439B1 (en) * | 1970-03-23 | 1977-08-15 |
-
1979
- 1979-09-28 JP JP12579179A patent/JPS5648615A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5231439B1 (en) * | 1970-03-23 | 1977-08-15 | ||
JPS5165960A (en) * | 1974-12-04 | 1976-06-08 | Dainippon Printing Co Ltd |
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