JPS57177083A - Liquid crystal display apparatus - Google Patents

Liquid crystal display apparatus

Info

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
Application number
JP6186581A
Other languages
Japanese (ja)
Inventor
Yoshizo Tashiro
Mitsuru Kano
Jun Nakanowatari
Yoshimi Kamijo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP6186581A priority Critical patent/JPS57177083A/en
Publication of JPS57177083A publication Critical patent/JPS57177083A/en
Pending legal-status Critical Current

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
JP6186581A 1981-04-23 1981-04-23 Liquid crystal display apparatus Pending JPS57177083A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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