JPS54155796A - Driving method for phase-transition type liquid-crystal display unit - Google Patents

Driving method for phase-transition type liquid-crystal display unit

Info

Publication number
JPS54155796A
JPS54155796A JP6471378A JP6471378A JPS54155796A JP S54155796 A JPS54155796 A JP S54155796A JP 6471378 A JP6471378 A JP 6471378A JP 6471378 A JP6471378 A JP 6471378A JP S54155796 A JPS54155796 A JP S54155796A
Authority
JP
Japan
Prior art keywords
state
display
voltage
liquid crystal
phase
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
JP6471378A
Other languages
Japanese (ja)
Inventor
Masaaki Taguchi
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP6471378A priority Critical patent/JPS54155796A/en
Publication of JPS54155796A publication Critical patent/JPS54155796A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE: To make it possible to apply a phase-transition type liquid-crystal display unit for an electronic desk calculator, wrist watch, etc., by reducing its power consumption by making a voltage applied for maintaining display lower than an impressed voltage at the time of the display.
CONSTITUTION: To carry out display by using a mixed liquid crystal of a P-type nematic liquid crystal and a cholesteric liquid crystal or chiral nematic liquid crystal and by utilizing the phase transition between a focal conic state (F state) and a transparent nematic state (N state), a high voltage is applied in order to obtain rapid response of display (erasing or write) from the F state to the N state, thereby obtaining the transparent state. Then, a lower voltage but is above a transition voltage from the N state to the F state is applied, thereby maintaining a transparent erasing or writing state. In this method, the power consumption can be lessened in comparison with continuous application of a high voltage, applied at the initial state, even for maintaining the display.
COPYRIGHT: (C)1979,JPO&Japio
JP6471378A 1978-05-30 1978-05-30 Driving method for phase-transition type liquid-crystal display unit Pending JPS54155796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6471378A JPS54155796A (en) 1978-05-30 1978-05-30 Driving method for phase-transition type liquid-crystal display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6471378A JPS54155796A (en) 1978-05-30 1978-05-30 Driving method for phase-transition type liquid-crystal display unit

Publications (1)

Publication Number Publication Date
JPS54155796A true JPS54155796A (en) 1979-12-08

Family

ID=13266058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6471378A Pending JPS54155796A (en) 1978-05-30 1978-05-30 Driving method for phase-transition type liquid-crystal display unit

Country Status (1)

Country Link
JP (1) JPS54155796A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5692591A (en) * 1979-12-26 1981-07-27 Suwa Seikosha Kk Liquiddcrystal display unit
JP2020515902A (en) * 2017-03-29 2020-05-28 メルク・パテント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ ＧｍｂＨ Method for electrically driving a switchable optical element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5692591A (en) * 1979-12-26 1981-07-27 Suwa Seikosha Kk Liquiddcrystal display unit
JPH0146874B2 (en) * 1979-12-26 1989-10-11 Seiko Epson Corp
JP2020515902A (en) * 2017-03-29 2020-05-28 メルク・パテント・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ ＧｍｂＨ Method for electrically driving a switchable optical element

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