JPS5739339A - Measuring method for lowest limit temperature of nematic phase of liquid crystal material - Google Patents

Measuring method for lowest limit temperature of nematic phase of liquid crystal material

Info

Publication number
JPS5739339A
JPS5739339A JP11480280A JP11480280A JPS5739339A JP S5739339 A JPS5739339 A JP S5739339A JP 11480280 A JP11480280 A JP 11480280A JP 11480280 A JP11480280 A JP 11480280A JP S5739339 A JPS5739339 A JP S5739339A
Authority
JP
Japan
Prior art keywords
liquid crystal
temperature
crystal material
nematic phase
state
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
JP11480280A
Other languages
Japanese (ja)
Inventor
Norimasa Kamezawa
Yasuo Hanawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11480280A priority Critical patent/JPS5739339A/en
Publication of JPS5739339A publication Critical patent/JPS5739339A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

PURPOSE:To easily measure the phase transition temperature between crystal-liquid crystal of mixed liquid crystal material composed of >=four components, by measuring the glass transition temperature of the liquid crystal material changed into a glass state by quenching from a nematic state. CONSTITUTION:Liquid crystal material mixed >=four components is made in a glass state by quenching from a nematic state to a temperature of liquid nitrogen. Next, the temperature of the liquid crystal material in the glass state is raised from the temperature of liquid nitrogen at a speed of 1k/min and a glass transition temperature Tg is measured by absolute temperature. And, the lowest limit temperature TCN of the nematic phase is found by equation TCN=1.31Tg. Hereby, the lowest temperature of the nematic phase can be accurately found and it is useful for establishment of operation condition of display apparatus used the liquid crystal.
JP11480280A 1980-08-22 1980-08-22 Measuring method for lowest limit temperature of nematic phase of liquid crystal material Pending JPS5739339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11480280A JPS5739339A (en) 1980-08-22 1980-08-22 Measuring method for lowest limit temperature of nematic phase of liquid crystal material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11480280A JPS5739339A (en) 1980-08-22 1980-08-22 Measuring method for lowest limit temperature of nematic phase of liquid crystal material

Publications (1)

Publication Number Publication Date
JPS5739339A true JPS5739339A (en) 1982-03-04

Family

ID=14647048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11480280A Pending JPS5739339A (en) 1980-08-22 1980-08-22 Measuring method for lowest limit temperature of nematic phase of liquid crystal material

Country Status (1)

Country Link
JP (1) JPS5739339A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0587753A (en) * 1991-09-30 1993-04-06 Shimadzu Corp Thermal analyzer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0587753A (en) * 1991-09-30 1993-04-06 Shimadzu Corp Thermal analyzer

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