JPS5557820A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS5557820A JPS5557820A JP13052978A JP13052978A JPS5557820A JP S5557820 A JPS5557820 A JP S5557820A JP 13052978 A JP13052978 A JP 13052978A JP 13052978 A JP13052978 A JP 13052978A JP S5557820 A JPS5557820 A JP S5557820A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- optically active
- crystal display
- display device
- supply voltage
- 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.)
- Granted
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
Abstract
PURPOSE: To widen the permissible fluctuation range of supply voltage and improve display characteristics by adding a small amount of optically active material into liquid crystal material and making the rotating direction of its intrinsic pitch and the twist direction of the liquid crystal element opposite.
CONSTITUTION: In the twisted type liquid crystal display device using nematic liquid crystal of positive dielectric anisotropy, a small amount of the optically active substance whose intrinsic pitch rotating direction is opposite with respect to the twist direction of the abovementioned liquid crystal display element is further added to form the liquid crystal layer. Chiral nematic liquid crystals and cholesteric liquid crystals are used for the optically active substance and, e.g., the compound such as the one shown by the formula is added at about 0.25wt%. This widens the permissible fluctuation range of supply voltage and yields the superior display.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13052978A JPS5557820A (en) | 1978-10-25 | 1978-10-25 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13052978A JPS5557820A (en) | 1978-10-25 | 1978-10-25 | Liquid crystal display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5557820A true JPS5557820A (en) | 1980-04-30 |
JPH0130129B2 JPH0130129B2 (en) | 1989-06-16 |
Family
ID=15036471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13052978A Granted JPS5557820A (en) | 1978-10-25 | 1978-10-25 | Liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5557820A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5810721A (en) * | 1981-07-14 | 1983-01-21 | Dainippon Printing Co Ltd | Liquid crystal display element |
JPS63293525A (en) * | 1987-05-26 | 1988-11-30 | Sanyo Electric Co Ltd | Liquid crystal display device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51110350A (en) * | 1975-03-24 | 1976-09-29 | Seikosha Kk | EKISHOHYOJISOCHI |
-
1978
- 1978-10-25 JP JP13052978A patent/JPS5557820A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51110350A (en) * | 1975-03-24 | 1976-09-29 | Seikosha Kk | EKISHOHYOJISOCHI |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5810721A (en) * | 1981-07-14 | 1983-01-21 | Dainippon Printing Co Ltd | Liquid crystal display element |
JPH0512687B2 (en) * | 1981-07-14 | 1993-02-18 | Dainippon Printing Co Ltd | |
JPS63293525A (en) * | 1987-05-26 | 1988-11-30 | Sanyo Electric Co Ltd | Liquid crystal display device |
Also Published As
Publication number | Publication date |
---|---|
JPH0130129B2 (en) | 1989-06-16 |
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