JPS55143526A - Liquid crystal color display element - Google Patents

Liquid crystal color display element

Info

Publication number
JPS55143526A
JPS55143526A JP5179479A JP5179479A JPS55143526A JP S55143526 A JPS55143526 A JP S55143526A JP 5179479 A JP5179479 A JP 5179479A JP 5179479 A JP5179479 A JP 5179479A JP S55143526 A JPS55143526 A JP S55143526A
Authority
JP
Japan
Prior art keywords
crystal
liq
display element
activator
concn
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
JP5179479A
Other languages
Japanese (ja)
Inventor
Norihisa Okamoto
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP5179479A priority Critical patent/JPS55143526A/en
Publication of JPS55143526A publication Critical patent/JPS55143526A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

PURPOSE: To obtain a guest-host effect type liq. crystal display element giving display free from color shading by using a nematic liq. crystal with negative dielectric anisotropy, as a liq. crystal composition for the element, to which an optical activator has been added to such a degree that cholesteric phase is not formed.
CONSTITUTION: To a nematic liq. crystal with negative dielectric anisotropy is added an optical activator in a concn. (about 1wt%) not more than the critical concn. where the crystal is of helical structure, providing elastic energy to the interior or the crystal. The resulting liq. crystal composition is held between vertically oriented upper and lower electrode substrates together with dichromatic dye to form a liq. crystal color display element. The above-mentioned activator may be (+)p-2- methylbutyl-p'-cyanobiphenyl. This element displays a color pattern against a white background by applying an electric field.
COPYRIGHT: (C)1980,JPO&Japio
JP5179479A 1979-04-26 1979-04-26 Liquid crystal color display element Pending JPS55143526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5179479A JPS55143526A (en) 1979-04-26 1979-04-26 Liquid crystal color display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5179479A JPS55143526A (en) 1979-04-26 1979-04-26 Liquid crystal color display element

Publications (1)

Publication Number Publication Date
JPS55143526A true JPS55143526A (en) 1980-11-08

Family

ID=12896838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5179479A Pending JPS55143526A (en) 1979-04-26 1979-04-26 Liquid crystal color display element

Country Status (1)

Country Link
JP (1) JPS55143526A (en)

Similar Documents

Publication Publication Date Title
JPS54134452A (en) Quest-host type liquid crystal display device
JPS5573023A (en) Liquid crystal color display body
EP0115136A3 (en) Cycloalkyl-type isotropic dyes for liquid crystal display devices
GB1420300A (en) Liquidcrystal displays
EP0115683A3 (en) Composition comprising substituted anthraquinone-type isotropic dyes for liquid crystal display devices
JPS5499785A (en) Liquid crystal composition
JPS55143526A (en) Liquid crystal color display element
JPS52133781A (en) Color display device
JPS5522772A (en) Liquid crystal display device
JPS5548735A (en) Color displaying method
JPS57117579A (en) Liquid crystal display device
JPS55111918A (en) Image conversion method of memory type liquid crystal display device
JPS5511211A (en) Liquid crystal color display element
JPS54119379A (en) Nematic liquid crystal composition
JPS5643386A (en) Liquid crystal composition and liquid crystal display element using the same
CH619590B (en) LIQUID CRYSTAL DISPLAY DEVICE OF THE HOST-EFFECT TYPE AND USE OF THIS LIQUID CRYSTAL DISPLAY DEVICE.
JPS5521418A (en) Liquid crystal display element
JPS5694331A (en) Liquid crystal color display body
JPS5683719A (en) Liquid crystal color display device
LABES Cooperative interactions in liquid crystal mixtures[Final Report, 1 Oct. 1977- 31 Oct. 1980]
JPS57177083A (en) Liquid crystal display apparatus
JPS5499786A (en) Nematic liquid crystal composition
JPS5662874A (en) Display device of liquid crystal
JPS5557820A (en) Liquid crystal display device
JPS5442381A (en) Liquid crystal composition