EP0448032A3 - Method of driving ferroelectric liquid crystal element - Google Patents

Method of driving ferroelectric liquid crystal element Download PDF

Info

Publication number
EP0448032A3
EP0448032A3 EP19910104222 EP91104222A EP0448032A3 EP 0448032 A3 EP0448032 A3 EP 0448032A3 EP 19910104222 EP19910104222 EP 19910104222 EP 91104222 A EP91104222 A EP 91104222A EP 0448032 A3 EP0448032 A3 EP 0448032A3
Authority
EP
European Patent Office
Prior art keywords
liquid crystal
ferroelectric liquid
tone signal
pixel
signal 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.)
Granted
Application number
EP19910104222
Other versions
EP0448032A2 (en
EP0448032B1 (en
Inventor
Yutaka C/O Canon Kabushiki Kaisha Inaba
Katsumi C/O Canon Kabushiki Kaisha Kurematsu
Shuzo C/O Canon Kabushiki Kaisha Kaneko
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Publication of EP0448032A2 publication Critical patent/EP0448032A2/en
Publication of EP0448032A3 publication Critical patent/EP0448032A3/en
Application granted granted Critical
Publication of EP0448032B1 publication Critical patent/EP0448032B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3651—Control of matrices with row and column drivers using an active matrix using multistable liquid crystals, e.g. ferroelectric liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/367—Control of matrices with row and column drivers with a nonlinear element in series with the liquid crystal cell, e.g. a diode, or M.I.M. element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/207—Display of intermediate tones by domain size control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

A method of driving a liquid crystal display element in which a switching element is provided for each of pixel electrodes arranged in a matrix manner and a ferroelectric liquid crystal is sandwiched between the pixel electrodes and a counter electrode includes the steps of applying a reset voltage for resetting the entire pixel to a first stable state of the ferroelectric liquid crystal across the pixel electrode and the counter electrode, partially transiting the pixel to a second stable state by a tone signal voltage having a pole opposite to that of the reset voltage, and reversing the pole of the reset voltage every predetermined period. Assuming that a state reverse ratio of the ferroelectric liquid crystal is T(V)% when the tone signal voltage is V, a tone signal voltage V1 after negative resetting and a corresponding tone signal voltage -V2 after positive resetting satisfy the following relation: T(V1) + T(V2) = 100 <IMAGE>
EP91104222A 1990-03-20 1991-03-19 Method of driving ferroelectric liquid crystal element and ferroelectric liquid crystal display Expired - Lifetime EP0448032B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7051190 1990-03-20
JP70511/90 1990-03-20
JP3074205A JP2805253B2 (en) 1990-03-20 1991-03-15 Ferroelectric liquid crystal device
JP74205/91 1991-03-15

Publications (3)

Publication Number Publication Date
EP0448032A2 EP0448032A2 (en) 1991-09-25
EP0448032A3 true EP0448032A3 (en) 1992-11-19
EP0448032B1 EP0448032B1 (en) 1996-07-03

Family

ID=26411663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104222A Expired - Lifetime EP0448032B1 (en) 1990-03-20 1991-03-19 Method of driving ferroelectric liquid crystal element and ferroelectric liquid crystal display

Country Status (4)

Country Link
EP (1) EP0448032B1 (en)
JP (1) JP2805253B2 (en)
AT (1) ATE140097T1 (en)
DE (1) DE69120564T2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2746486B2 (en) * 1991-08-20 1998-05-06 シャープ株式会社 Ferroelectric liquid crystal device
JP2806098B2 (en) * 1991-10-09 1998-09-30 松下電器産業株式会社 Driving method of display device
JPH05241138A (en) * 1991-12-06 1993-09-21 Canon Inc Liquid crystal optical element
JP2866518B2 (en) * 1992-01-17 1999-03-08 シャープ株式会社 Driving method of antiferroelectric liquid crystal device
JPH07120722A (en) * 1993-06-30 1995-05-12 Sharp Corp Liquid crystal display device and driving method thereof
US5767829A (en) * 1994-08-23 1998-06-16 U.S. Philips Corporation Liquid crystal display device including drive circuit for predetermining polarization state
JP3534086B2 (en) * 2001-04-27 2004-06-07 松下電器産業株式会社 Driving method of liquid crystal display device
WO2002063384A1 (en) 2001-02-05 2002-08-15 Matsushita Electric Industrial Co., Ltd. Liquid crystal display unit and driving method therefor
US8564514B2 (en) 2001-04-18 2013-10-22 Fujitsu Limited Driving method of liquid crystal display device and liquid crystal display device
TWI404011B (en) * 2009-03-18 2013-08-01 Pervasive Display Co Ltd Non-volatile display module and non-volatile display apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197742A2 (en) * 1985-04-03 1986-10-15 Nortel Networks Corporation Addressing liquid crystal cells
EP0284134A1 (en) * 1987-03-17 1988-09-28 Koninklijke Philips Electronics N.V. Method of driving a liquid crystal display device and associated display device
EP0362939A1 (en) * 1988-10-05 1990-04-11 Koninklijke Philips Electronics N.V. Method of driving a display device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2733222B2 (en) * 1987-03-31 1998-03-30 キヤノン株式会社 Liquid crystal device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197742A2 (en) * 1985-04-03 1986-10-15 Nortel Networks Corporation Addressing liquid crystal cells
EP0284134A1 (en) * 1987-03-17 1988-09-28 Koninklijke Philips Electronics N.V. Method of driving a liquid crystal display device and associated display device
EP0362939A1 (en) * 1988-10-05 1990-04-11 Koninklijke Philips Electronics N.V. Method of driving a display device

Also Published As

Publication number Publication date
ATE140097T1 (en) 1996-07-15
JP2805253B2 (en) 1998-09-30
DE69120564T2 (en) 1996-12-19
EP0448032A2 (en) 1991-09-25
DE69120564D1 (en) 1996-08-08
EP0448032B1 (en) 1996-07-03
JPH04218023A (en) 1992-08-07

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