CA2243383A1 - Method for driving a nematic liquid crystal - Google Patents

Method for driving a nematic liquid crystal

Info

Publication number
CA2243383A1
CA2243383A1 CA 2243383 CA2243383A CA2243383A1 CA 2243383 A1 CA2243383 A1 CA 2243383A1 CA 2243383 CA2243383 CA 2243383 CA 2243383 A CA2243383 A CA 2243383A CA 2243383 A1 CA2243383 A1 CA 2243383A1
Authority
CA
Canada
Prior art keywords
liquid crystal
nematic liquid
electrodes
driving
predetermined
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
CA 2243383
Other languages
French (fr)
Other versions
CA2243383C (en
Inventor
Masaya Okita
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2243383A1 publication Critical patent/CA2243383A1/en
Application granted granted Critical
Publication of CA2243383C publication Critical patent/CA2243383C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using 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
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/065—Waveforms comprising zero voltage phase or pause
    • 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
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix

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 Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

In a liquid crystal display device combining a nematic liquid crystal confined between two electrodes with polarizing plates, a voltage applied between two electrodes to drive the nematic liquid crystal is maintained in a predetermined value for a predetermined duration of time in predetermined intervals to increase the response speed and to realize color images by tricolor back-lighting or moving images equivalent to or more excellent than those by CRT
displays.

Claims (3)

1. A method for driving a nematic liquid crystal in a liquid crystal display device which includes a nematic liquid crystal, two electrodes confining said nematic liquid crystal and a pair of polarizing plates sandwiching said electrodes confining the nematic liquid crystal, comprising:
maintaining a voltage across said two electrodes to a predetermined value for a predetermined duration of time in predetermined cycles.
2. The method for driving a nematic liquid crystal according to claim 1 wherein the voltage applied between said two electrodes is inverted in polarity within each said cycle so as to make the average of voltage values to substantially zero within said cycle.
3. The method for driving a nematic liquid crystal according to claim 1 or 2 wherein said nematic liquid crystal is heated to a predetermined temperature.
CA2243383A 1997-09-12 1998-07-20 Method for driving a nematic liquid crystal Expired - Fee Related CA2243383C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP26781997A JPH1184341A (en) 1997-09-12 1997-09-12 Method for driving nematic liquid crystal
JP9-267819 1997-09-12

Publications (2)

Publication Number Publication Date
CA2243383A1 true CA2243383A1 (en) 1999-03-12
CA2243383C CA2243383C (en) 2012-12-18

Family

ID=17450053

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2243383A Expired - Fee Related CA2243383C (en) 1997-09-12 1998-07-20 Method for driving a nematic liquid crystal

Country Status (6)

Country Link
EP (1) EP0903721A3 (en)
JP (1) JPH1184341A (en)
KR (1) KR100639602B1 (en)
CN (1) CN1161729C (en)
CA (1) CA2243383C (en)
TW (1) TW421775B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11296150A (en) * 1998-04-10 1999-10-29 Masaya Okita High-speed driving method for liquid crystal
EP1345202B1 (en) 2000-12-22 2011-02-16 Hunet Display Technology Inc. Liquid crystal drive apparatus and gradation display method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2346974A1 (en) * 1973-09-18 1975-04-03 Commissariat Energie Atomique Nematic crystal display junction-points values control - uses stimulation signals from voltage sources to junction electrodes
DD292601A7 (en) * 1987-04-15 1991-08-08 Zentralinstitut Fuer Elektronenphysik,De METHOD FOR CONTROLLING A LIQUID CRYSTAL CELL
JPH03132692A (en) * 1989-10-18 1991-06-06 Matsushita Electric Ind Co Ltd Method for driving liquid crystal display device and its driving circuit
US5088806A (en) * 1990-01-16 1992-02-18 Honeywell, Inc. Apparatus and method for temperature compensation of liquid crystal matrix displays
JP2901438B2 (en) * 1992-10-07 1999-06-07 シャープ株式会社 Driving method of liquid crystal display device
JPH1069260A (en) * 1996-08-26 1998-03-10 Buraito Kenkyusho:Kk Method for driving nematic liquid crystal

Also Published As

Publication number Publication date
KR19990029212A (en) 1999-04-26
HK1019106A1 (en) 2000-01-21
CN1161729C (en) 2004-08-11
CA2243383C (en) 2012-12-18
JPH1184341A (en) 1999-03-26
TW421775B (en) 2001-02-11
CN1211778A (en) 1999-03-24
KR100639602B1 (en) 2006-12-19
EP0903721A3 (en) 1999-07-21
EP0903721A2 (en) 1999-03-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160720