JPS57177083A - Liquid crystal display apparatus - Google Patents
Liquid crystal display apparatusInfo
- Publication number
- JPS57177083A JPS57177083A JP6186581A JP6186581A JPS57177083A JP S57177083 A JPS57177083 A JP S57177083A JP 6186581 A JP6186581 A JP 6186581A JP 6186581 A JP6186581 A JP 6186581A JP S57177083 A JPS57177083 A JP S57177083A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cholesteric
- display apparatus
- crystal display
- 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.)
- Pending
Links
Abstract
PURPOSE: The titled apparatus, holding a liquid crystal mixture obtained by adding a dichroic dye and an optically active substance cholesteric ethyl carbonate to a nematic liquid crystal having the negative dielectric anisotropy between two insulating substrates, and having improved visibility and contrast.
CONSTITUTION: A liquid crystal mixture obtained by adding a dichroic dye and cholesteric ethyl carbonate expressed by the formula (R is ethyl) as a cholesteric liquid crystal which is an optically active substance to a nematic liquid crystal having the negative dielectric anisotropy is held between two opposite insulating substrates in which at least one is transparent to constitute the aimed liquid crystal display apparatus. The content of the cholesteric substance is such that a helical orientation is not formed naturally in the liquid crystal mixture without the application of voltage and formed in the application of the voltage.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6186581A JPS57177083A (en) | 1981-04-23 | 1981-04-23 | Liquid crystal display apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6186581A JPS57177083A (en) | 1981-04-23 | 1981-04-23 | Liquid crystal display apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57177083A true JPS57177083A (en) | 1982-10-30 |
Family
ID=13183436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6186581A Pending JPS57177083A (en) | 1981-04-23 | 1981-04-23 | Liquid crystal display apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57177083A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5157684A (en) * | 1974-11-15 | 1976-05-20 | Dainippon Printing Co Ltd | NEMACHITSU KUEKISHOSOSEIBUTSU |
JPS5557824A (en) * | 1978-07-13 | 1980-04-30 | Bbc Brown Boveri & Cie | Liquid crystal display unit |
-
1981
- 1981-04-23 JP JP6186581A patent/JPS57177083A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5157684A (en) * | 1974-11-15 | 1976-05-20 | Dainippon Printing Co Ltd | NEMACHITSU KUEKISHOSOSEIBUTSU |
JPS5557824A (en) * | 1978-07-13 | 1980-04-30 | Bbc Brown Boveri & Cie | Liquid crystal display unit |
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