AU6627181A – Liquid crystal display cell
– Google Patents
AU6627181A – Liquid crystal display cell
– Google Patents
Liquid crystal display cell
Info
Publication number
AU6627181A
AU6627181A
AU66271/81A
AU6627181A
AU6627181A
AU 6627181 A
AU6627181 A
AU 6627181A
AU 66271/81 A
AU66271/81 A
AU 66271/81A
AU 6627181 A
AU6627181 A
AU 6627181A
AU 6627181 A
AU6627181 A
AU 6627181A
Authority
AU
Australia
Prior art keywords
liquid crystal
crystal display
display cell
cell
liquid
Prior art date
1980-01-16
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
AU66271/81A
Other versions
AU532891B2
(en
Inventor
Peter John Ayliffe
David Coates
William Alden Crossland
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.)
PolyDisplay ASA
Original Assignee
International Standard Electric Corp
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.)
1980-01-16
Filing date
1981-01-16
Publication date
1981-07-23
1981-01-16
Application filed by International Standard Electric Corp
filed
Critical
International Standard Electric Corp
1981-07-23
Publication of AU6627181A
publication
Critical
patent/AU6627181A/en
1983-10-20
Application granted
granted
Critical
1983-10-20
Publication of AU532891B2
publication
Critical
patent/AU532891B2/en
1994-06-09
Assigned to NORTHERN TELECOM LIMITED
reassignment
NORTHERN TELECOM LIMITED
Alteration of Name(s) in Register under S187
Assignors: STC PLC
2000-02-03
Assigned to NORTEL NETWORKS CORPORATION
reassignment
NORTEL NETWORKS CORPORATION
Request to Amend Deed and Register
Assignors: NORTHERN TELECOM LIMITED
2001-01-16
Anticipated expiration
legal-status
Critical
2001-02-01
Assigned to POLYDISPLAY ASA
reassignment
POLYDISPLAY ASA
Alteration of Name(s) in Register under S187
Assignors: NORTEL NETWORKS CORPORATION
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G02—OPTICS
G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
G02F1/13781—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering using smectic liquid crystals
G—PHYSICS
G02—OPTICS
G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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
G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, 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
G09G2300/00—Aspects of the constitution of display devices
G09G2300/04—Structural and physical details of display devices
G09G2300/0469—Details of the physics of pixel operation
G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
G09G2300/0482—Use of memory effects in nematic liquid crystals
G09G2300/0486—Cholesteric liquid crystals, including chiral-nematic liquid crystals, with transitions between focal conic, planar, and homeotropic states
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
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
G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
AU66271/81A
1980-01-16
1981-01-16
Liquid crystal display cell
Expired
AU532891B2
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
GB8001499A
GB2067811B
(en)
1980-01-16
1980-01-16
Co-ordinate addressing of smetic display cells
GB8001499
1980-01-16
Publications (2)
Publication Number
Publication Date
AU6627181A
true
AU6627181A
(en)
1981-07-23
AU532891B2
AU532891B2
(en)
1983-10-20
Family
ID=10510680
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
AU66271/81A
Expired
AU532891B2
(en)
1980-01-16
1981-01-16
Liquid crystal display cell
Country Status (5)
Country
Link
US
(2)
US4419664A
(en)
JP
(1)
JPS56106283A
(en)
AU
(1)
AU532891B2
(en)
GB
(1)
GB2067811B
(en)
NL
(1)
NL191806C
(en)
Families Citing this family (28)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4655561A
(en)
*
1983-04-19
1987-04-07
Canon Kabushiki Kaisha
Method of driving optical modulation device using ferroelectric liquid crystal
GB2139392B
(en)
*
1983-05-05
1986-10-22
Standard Telephones Cables Ltd
Display device
GB2149176B
(en)
*
1983-10-26
1988-07-13
Stc Plc
Addressing liquid crystal displays
GB2150726B
(en)
*
1983-11-30
1988-01-20
Standard Telephones Cables Ltd
Office terminals
GB2161951B
(en)
*
1984-07-17
1988-01-20
Stc Plc
Laser addressed smectic displays
US4682858A
(en)
*
1984-08-20
1987-07-28
Canon Kabushiki Kaisha
Liquid crystal device having reduced-pressure region in communication with ferroelectric liquid crystal
US4668049A
(en)
*
1984-12-18
1987-05-26
Itt Corporation
Illumination for a scattering type liquid crystal display
KR910001848B1
(en)
*
1986-02-06
1991-03-28
세이꼬 엡슨 가부시끼가이샤
Liquid crystal displayy
US4773738A
(en)
*
1986-08-27
1988-09-27
Canon Kabushiki Kaisha
Optical modulation device using ferroelectric liquid crystal and AC and DC driving voltages
US4799770A
(en)
*
1986-10-02
1989-01-24
Greyhawk Systems, Inc.
Liquid crystal cell for image projections and method of operating same
US5082587A
(en)
*
1988-09-23
1992-01-21
Janulis Eugene P
Achiral fluorine-containing liquid crystals
US5262082A
(en)
*
1992-04-28
1993-11-16
Minnesota Mining And Manufacturing Company
Ferroelectric liquid crystal compounds having perfluoroether terminal portions
US5482650A
(en)
*
1992-04-28
1996-01-09
Minnesota Mining And Manufacturing Company
Liquid crystal compounds having perfluoroether terminal portions
US5399291A
(en)
*
1993-09-30
1995-03-21
Minnesota Mining And Manufacturing Company
Liquid crystal compounds having a fluoroether terminal portion
US6154190A
(en)
*
1995-02-17
2000-11-28
Kent State University
Dynamic drive methods and apparatus for a bistable liquid crystal display
US5702637A
(en)
*
1995-04-19
1997-12-30
Minnesota Mining And Manufacturing Company
Liquid crystal compounds having a chiral fluorinated terminal portion
US5658491A
(en)
*
1995-10-12
1997-08-19
Minnesota Mining And Manufacturing Company
Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds
US5855812A
(en)
*
1997-04-11
1999-01-05
Minnesota Mining And Manufacturing Company
Compounds and process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds
US6268840B1
(en)
1997-05-12
2001-07-31
Kent Displays Incorporated
Unipolar waveform drive method and apparatus for a bistable liquid crystal display
US6133895A
(en)
*
1997-06-04
2000-10-17
Kent Displays Incorporated
Cumulative drive scheme and method for a liquid crystal display
US6309561B1
(en)
1997-12-24
2001-10-30
3M Innovative Properties Company
Liquid crystal compounds having a chiral fluorinated terminal portion
US20030122752A1
(en)
*
2002-01-03
2003-07-03
Yao-Dong Ma
Localized driving means for cholesterics displays
KR101801722B1
(en)
2010-03-15
2017-11-27
캠브리지 엔터프라이즈 리미티드
Liquid Crystal Formulations and Structures for Smetic A Optical Devices
WO2011115611A1
(en)
*
2010-03-15
2011-09-22
Cambridge Enterprise Limited
Liquid crystal formulations and structures for smectic a optical devices
GB201100375D0
(en)
2011-01-10
2011-02-23
Cambridge Entpr Ltd
Smectic A compositions for use in electrical devices
GB2553147A
(en)
*
2016-08-26
2018-02-28
Univ Oxford Innovation Ltd
Speckle reduction
PL240079B1
(en)
2017-10-31
2022-02-14
Wojskowa Akad Tech
Smectic material with high photochemical stability and wide temperature range of monolayer smectic phase A (SmA1) and the device that uses such material
TWI692756B
(en)
*
2018-02-07
2020-05-01
神基科技股份有限公司
Water-proof module and seal member thereof
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3575492A
(en)
*
1969-07-10
1971-04-20
Rca Corp
Turnoff method and circuit for liquid crystal display element
JPS5247745B2
(en)
*
1974-07-31
1977-12-05
GB1557199A
(en)
*
1976-01-06
1979-12-05
Standard Telephones Cables Ltd
Liquid crystal display cells
FR2373076A1
(en)
*
1976-12-03
1978-06-30
Thomson Csf
LIQUID CRYSTAL CELL
JPS5887535A
(en)
*
1981-11-20
1983-05-25
Sony Corp
Liquid crystal display
1980
1980-01-16
GB
GB8001499A
patent/GB2067811B/en
not_active
Expired
1980-12-23
US
US06/219,559
patent/US4419664A/en
not_active
Expired – Lifetime
1981
1981-01-16
JP
JP396481A
patent/JPS56106283A/en
active
Granted
1981-01-16
AU
AU66271/81A
patent/AU532891B2/en
not_active
Expired
1981-01-16
NL
NL8100184A
patent/NL191806C/en
not_active
IP Right Cessation
1983
1983-08-25
US
US06/526,563
patent/US4528562A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
NL8100184A
(en)
1981-08-17
GB2067811B
(en)
1983-08-10
US4419664A
(en)
1983-12-06
JPS6352396B2
(en)
1988-10-18
US4528562A
(en)
1985-07-09
AU532891B2
(en)
1983-10-20
JPS56106283A
(en)
1981-08-24
NL191806C
(en)
1996-08-02
NL191806B
(en)
1996-04-01
GB2067811A
(en)
1981-07-30
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Legal Events
Date
Code
Title
Description
2000-02-03
HB
Alteration of name in register
Free format text:
NORTEL NETWORKS CORPORATION
2001-02-01
PC
Assignment registered
Owner name:
POLYDISPLAY ASA
Free format text:
FORMER OWNER WAS: NORTEL NETWORKS CORPORATION
2001-08-16
MK14
Patent ceased section 143(a) (annual fees not paid) or expired
