DE69220173T2 - Verfahren zum Steuern eines oberflächenstabilisierten ferroelektrischen Flüssigkristallanzeigeelements zur Erhöhung der Graupegelzahl - Google Patents
Verfahren zum Steuern eines oberflächenstabilisierten ferroelektrischen Flüssigkristallanzeigeelements zur Erhöhung der GraupegelzahlInfo
- Publication number
- DE69220173T2 DE69220173T2 DE69220173T DE69220173T DE69220173T2 DE 69220173 T2 DE69220173 T2 DE 69220173T2 DE 69220173 T DE69220173 T DE 69220173T DE 69220173 T DE69220173 T DE 69220173T DE 69220173 T2 DE69220173 T2 DE 69220173T2
- Authority
- DE
- Germany
- Prior art keywords
- controlling
- liquid crystal
- increase
- crystal display
- display element
- 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.)
- Expired - Lifetime
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
- G09G3/3622—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
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
-
- 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
- G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25911091 | 1991-10-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69220173D1 DE69220173D1 (de) | 1997-07-10 |
DE69220173T2 true DE69220173T2 (de) | 1997-09-18 |
Family
ID=17329459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69220173T Expired - Lifetime DE69220173T2 (de) | 1991-10-07 | 1992-10-06 | Verfahren zum Steuern eines oberflächenstabilisierten ferroelektrischen Flüssigkristallanzeigeelements zur Erhöhung der Graupegelzahl |
Country Status (3)
Country | Link |
---|---|
US (1) | US5856815A (de) |
EP (1) | EP0536975B1 (de) |
DE (1) | DE69220173T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3634390B2 (ja) * | 1992-07-16 | 2005-03-30 | セイコーエプソン株式会社 | 液晶電気光学素子 |
JP3489169B2 (ja) * | 1993-02-25 | 2004-01-19 | セイコーエプソン株式会社 | 液晶表示装置の駆動方法 |
CN1156815C (zh) | 1995-05-17 | 2004-07-07 | 精工爱普生株式会社 | 液晶显示装置及其驱动方法以及其使用的驱动电路和电源电路装置 |
JPH09127483A (ja) * | 1995-11-06 | 1997-05-16 | Sharp Corp | 液晶表示装置 |
US6870163B1 (en) | 1999-09-01 | 2005-03-22 | Displaytech, Inc. | Ferroelectric liquid crystal devices using materials with a de Vries smectic A phase |
US7083832B2 (en) | 2000-09-01 | 2006-08-01 | Displaytech, Inc. | Partially fluorinated liquid crystal material |
US7195719B1 (en) | 2001-01-03 | 2007-03-27 | Displaytech, Inc. | High polarization ferroelectric liquid crystal compositions |
US6703082B1 (en) | 2001-06-20 | 2004-03-09 | Displaytech, Inc. | Bookshelf liquid crystal materials and devices |
US6838128B1 (en) | 2002-02-05 | 2005-01-04 | Displaytech, Inc. | High polarization dopants for ferroelectric liquid crystal compositions |
KR100603281B1 (ko) * | 2002-02-15 | 2006-07-20 | 삼성에스디아이 주식회사 | 두 전위들로써 주사 전극 라인들을 구동하여 계조를표시하기 위한 콜레스테릭 액정 표시 패널의 구동 방법 |
US20080024482A1 (en) * | 2002-06-13 | 2008-01-31 | E Ink Corporation | Methods for driving electro-optic displays |
KR20050104652A (ko) * | 2004-04-29 | 2005-11-03 | 삼성에스디아이 주식회사 | 전자 방출 표시 장치 및 그 구동 방법 |
WO2009050772A1 (ja) * | 2007-10-15 | 2009-04-23 | Fujitsu Limited | ドットマトリクス型の表示素子を有する表示装置およびその駆動方法 |
CN101216645B (zh) * | 2008-01-04 | 2010-11-10 | 昆山龙腾光电有限公司 | 低色偏液晶显示器及其驱动方法 |
GB2460409B (en) * | 2008-05-27 | 2012-04-04 | Sony Corp | Driving circuit for a liquid crystal display |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2178582B (en) * | 1985-07-16 | 1990-01-24 | Canon Kk | Liquid crystal apparatus |
JPS62119521A (ja) * | 1985-11-19 | 1987-05-30 | Canon Inc | 光学変調装置 |
US4818078A (en) * | 1985-11-26 | 1989-04-04 | Canon Kabushiki Kaisha | Ferroelectric liquid crystal optical modulation device and driving method therefor for gray scale display |
JPS6373228A (ja) * | 1986-09-17 | 1988-04-02 | Canon Inc | 光学変調素子の駆動法 |
US4901066A (en) * | 1986-12-16 | 1990-02-13 | Matsushita Electric Industrial Co., Ltd. | Method of driving an optical modulation device |
ATE116466T1 (de) * | 1987-10-26 | 1995-01-15 | Canon Kk | Treiberschaltung. |
GB8726996D0 (en) * | 1987-11-18 | 1987-12-23 | Secr Defence | Multiplex addressing of ferro-electric liquid crystal displays |
US4921334A (en) * | 1988-07-18 | 1990-05-01 | General Electric Company | Matrix liquid crystal display with extended gray scale |
JPH0650522B2 (ja) * | 1988-09-22 | 1994-06-29 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 表示システム |
US5289175A (en) * | 1989-04-03 | 1994-02-22 | Canon Kabushiki Kaisha | Method of and apparatus for driving ferroelectric liquid crystal display device |
US5061044A (en) * | 1989-05-23 | 1991-10-29 | Citizen Watch Co., Ltd. | Ferroelectric liquid crystal display having opposingly inclined alignment films wherein the liquid crystal has one twisted and two aligned states which coexist and a driving method to produce gray scale |
JP2637822B2 (ja) * | 1989-05-30 | 1997-08-06 | シャープ株式会社 | 表示装置の駆動方法 |
US5650869A (en) * | 1995-05-05 | 1997-07-22 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Point relay scanner utilizing ellipsoidal mirrors |
-
1992
- 1992-10-06 EP EP92309088A patent/EP0536975B1/de not_active Expired - Lifetime
- 1992-10-06 DE DE69220173T patent/DE69220173T2/de not_active Expired - Lifetime
-
1996
- 1996-07-16 US US08/680,980 patent/US5856815A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0536975B1 (de) | 1997-06-04 |
US5856815A (en) | 1999-01-05 |
DE69220173D1 (de) | 1997-07-10 |
EP0536975A2 (de) | 1993-04-14 |
EP0536975A3 (en) | 1993-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Representative=s name: SEEGER SEEGER LINDNER PARTNERSCHAFT PATENTANWAELTE |