ES2035825T3 - Dispositivo de modulacion optica. - Google Patents
Dispositivo de modulacion optica.Info
- Publication number
- ES2035825T3 ES2035825T3 ES198787104841T ES87104841T ES2035825T3 ES 2035825 T3 ES2035825 T3 ES 2035825T3 ES 198787104841 T ES198787104841 T ES 198787104841T ES 87104841 T ES87104841 T ES 87104841T ES 2035825 T3 ES2035825 T3 ES 2035825T3
- Authority
- ES
- Spain
- Prior art keywords
- pixel
- liquid crystal
- layer
- electrode layers
- alignment
- 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
- G09G3/3637—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with intermediate tones displayed by domain size control
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
-
- 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
- G02F1/139—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 based on orientation effects in which the liquid crystal remains transparent
- G02F1/141—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 based on orientation effects in which the liquid crystal remains transparent using ferroelectric 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133371—Cells with varying thickness of the liquid crystal layer
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/30—Gray scale
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Una célula de cristal líquido cuyo medio ópticamente activo está constituído por una capa de material (1) de cristal líquido ferroeléctrico esmético situada entre dos placas de soporte (31,34) de las cuales la superficie enfrentadas hacia el interior comportan capas de electrodo transparentes (32, 35) que definen una pluralidad de píxels, estando cubierta cada una de las capas de electrodo con una capa de alineación (33,36) y siendo el citado material de cristal líquido eléctricamente conmutable entre dos estados es tables que son ópticamente distintos, caracterizada porque para asegurar la existencia de núcleos de inversión para cada píxel i) por lo menos una de las capas de alineación contiene regiones (101) que son mucho menores que el tamaño de un píxel, teniendo una diferente fuerza de alineación para las moléculas del cristal líquido que el resto (102) de la capa de alineación, o ii) por lo menos una de las capas de electrodo contiene regiones (201) que son mucho menores que el tamañode un píxel, en que el espesor de la capa de electrodo es aumentada, o iii) por lo menos una de las capas de electrodo contiene regiones que son muchos menores que el tamaño de un píxel teniendo una resistividad inferior a la del resto de la capa de electrodo.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61075868A JP2517549B2 (ja) | 1986-04-02 | 1986-04-02 | 光学変調素子 |
JP61075867A JPH07122703B2 (ja) | 1986-04-02 | 1986-04-02 | 光学変調素子 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2035825T3 true ES2035825T3 (es) | 1993-05-01 |
Family
ID=26417028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES198787104841T Expired - Lifetime ES2035825T3 (es) | 1986-04-02 | 1987-04-01 | Dispositivo de modulacion optica. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4796980A (es) |
EP (1) | EP0240010B1 (es) |
DE (1) | DE3782353T2 (es) |
ES (1) | ES2035825T3 (es) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0723942B2 (ja) * | 1985-08-08 | 1995-03-15 | 株式会社半導体エネルギ−研究所 | 液晶装置 |
US4824218A (en) * | 1986-04-09 | 1989-04-25 | Canon Kabushiki Kaisha | Optical modulation apparatus using ferroelectric liquid crystal and low-resistance portions of column electrodes |
JPS62278540A (ja) * | 1986-05-27 | 1987-12-03 | Canon Inc | 液晶素子、その配向制御法及びその駆動法 |
US4932758A (en) * | 1987-09-17 | 1990-06-12 | Canon Kabushiki Kaisha | Ferroelectric smectic liquid crystal device having a bistable alignment state providing two stable orientation states |
US5200848A (en) * | 1987-09-17 | 1993-04-06 | Canon Kabushiki Kaisha | Ferroelectric smectic liquid crystal device |
US5422749A (en) * | 1987-09-17 | 1995-06-06 | Canon Kabushiki Kaisha | Ferroelectric smetic liquid crystal device |
AU647786B2 (en) * | 1987-09-17 | 1994-03-31 | Canon Kabushiki Kaisha | Ferroelectric smectic liquid crystal device |
KR940008530B1 (ko) * | 1987-09-18 | 1994-09-22 | 가부시끼가이샤 한도 따이에네르기 겐꾸쇼 | 액정 전기 광학 장치 |
US4906074A (en) * | 1987-09-28 | 1990-03-06 | Semiconductor Energy Laboratory Co., Ltd. | FLC liquid crystal electro-optical device having microdomains within pixels |
DE3855346T2 (de) * | 1987-12-10 | 1996-11-07 | Canon Kk | Gerät zur Darstellung von Bildern |
NL8703085A (nl) * | 1987-12-21 | 1989-07-17 | Philips Nv | Werkwijze voor het besturen van een weergeefinrichting. |
US5140447A (en) * | 1987-12-22 | 1992-08-18 | Canon Kabushiki Kaisha | Display medium having a colored polymer liquid crystal layer |
EP0352637B1 (en) * | 1988-07-26 | 1994-03-30 | Idemitsu Kosan Company Limited | Ferroelectric liquid crystal composition, liquid crystal optical device produced by using the ferroelectric liquid crystal composition, and method of producing the liquid crystal optical device |
FR2637407B1 (fr) * | 1988-09-30 | 1994-02-11 | Commissariat A Energie Atomique | Procede d'affichage de niveaux de gris sur un ecran a cristaux liquides ferroelectriques a phase smectique chirale |
US4974941A (en) * | 1989-03-08 | 1990-12-04 | Hercules Incorporated | Process of aligning and realigning liquid crystal media |
NL8901481A (nl) * | 1989-06-12 | 1991-01-02 | Philips Nv | Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. |
US5182662A (en) * | 1989-12-01 | 1993-01-26 | Canon Kabushiki Kaisha | Liquid crystal device |
US5073294A (en) * | 1990-03-07 | 1991-12-17 | Hercules Incorporated | Process of preparing compositions having multiple oriented mesogens |
JP2994814B2 (ja) * | 1990-11-09 | 1999-12-27 | キヤノン株式会社 | 液晶装置 |
JP2775527B2 (ja) * | 1991-02-01 | 1998-07-16 | キヤノン株式会社 | カイラルスメクチック液晶素子 |
JPH04258924A (ja) * | 1991-02-13 | 1992-09-14 | Canon Inc | カイラルスメクチック液晶素子およびその製造方法 |
JPH05150244A (ja) * | 1991-02-20 | 1993-06-18 | Canon Inc | 強誘電液晶素子 |
US5420603A (en) * | 1991-02-20 | 1995-05-30 | Canon Kabushiki Kaisha | Display apparatus |
JP2794226B2 (ja) * | 1991-04-15 | 1998-09-03 | キヤノン株式会社 | 強誘電性液晶素子の駆動装置および駆動方法 |
EP0509490A3 (en) * | 1991-04-16 | 1993-05-26 | Canon Kabushiki Kaisha | Liquid crystal apparatus |
JPH05158444A (ja) * | 1991-12-04 | 1993-06-25 | Canon Inc | 液晶表示装置 |
JPH05241138A (ja) * | 1991-12-06 | 1993-09-21 | Canon Inc | 液晶光学素子 |
US5495352A (en) * | 1992-07-30 | 1996-02-27 | Canon Kabushiki Kaisha | Liquid crystal display device with stripe-shaped unevennesses on the electrodes |
US5469281A (en) * | 1992-08-24 | 1995-11-21 | Canon Kabushiki Kaisha | Driving method for liquid crystal device which is not affected by a threshold characteristic change |
US5552911A (en) * | 1992-10-19 | 1996-09-03 | Canon Kabushiki Kaisha | Color liquid crystal display device having varying cell thickness and varying pixel areas |
JP3456493B2 (ja) * | 1992-10-24 | 2003-10-14 | ソニー株式会社 | 液晶素子 |
US5532713A (en) * | 1993-04-20 | 1996-07-02 | Canon Kabushiki Kaisha | Driving method for liquid crystal device |
US5446570A (en) * | 1993-04-27 | 1995-08-29 | Canon Kabushiki Kaisha | Liquid crystal display with projecting portions on the electrodes |
GB9323242D0 (en) * | 1993-11-11 | 1994-01-05 | Central Research Lab Ltd | Temperature compensation in greyscale addressing |
GB9406742D0 (en) * | 1994-04-06 | 1994-05-25 | Crossland William A | Thin panel display screen |
EP0695965B1 (en) * | 1994-08-04 | 2002-04-10 | Canon Kabushiki Kaisha | Liquid crystal device |
GB2293260B (en) * | 1994-09-19 | 1998-07-08 | Sharp Kk | Liquid crystal device |
JP2997866B2 (ja) * | 1995-03-10 | 2000-01-11 | 富士通株式会社 | 強誘電性液晶表示素子 |
TW373095B (en) * | 1995-06-15 | 1999-11-01 | Canon Kk | Method for driving optical modulation unit, optical modulation or image display system |
EP0762370A3 (en) * | 1995-08-02 | 1998-01-07 | Canon Kabushiki Kaisha | Driving method for display apparatus including an optical modulation device |
EP0782039A3 (en) | 1995-12-27 | 1998-06-17 | Canon Kabushiki Kaisha | Display device and process for producing same |
US6072555A (en) * | 1996-02-01 | 2000-06-06 | Canon Kabushiki Kaisha | Display apparatus capable of gradational display |
GB9615817D0 (en) * | 1996-07-26 | 1996-09-04 | Secr Defence | Liquid crystal device with greyscale |
GB2320103A (en) * | 1996-12-05 | 1998-06-10 | Sharp Kk | Liquid crystal devices |
US6133894A (en) * | 1996-12-17 | 2000-10-17 | Canon Kabushiki Kaisha | Driving method for optical apparatus |
US6175401B1 (en) * | 1997-05-02 | 2001-01-16 | Casio Computer Co., Ltd. | Liquid crystal display device having a liquid crystal layer which contains liquid crystal molecules in a plurality of alignment state and method for driving the same |
JP3910370B2 (ja) * | 2000-02-08 | 2007-04-25 | シャープ株式会社 | 液晶表示デバイス |
CN1474660A (zh) | 2000-09-18 | 2004-02-11 | �ָ��š���ɭ������˹����˾ | 带有不可燃处理材料的低侧流烟香烟 |
WO2003077687A2 (en) * | 2002-03-15 | 2003-09-25 | Rothmans, Benson & Hedges Inc. | Low sidestream smoke cigarette with combustible paper having modified ash characteristics |
JP4854182B2 (ja) * | 2004-04-16 | 2012-01-18 | 三洋電機株式会社 | 表示装置 |
US20080018576A1 (en) * | 2006-07-23 | 2008-01-24 | Peter James Fricke | Display element having groups of individually turned-on steps |
US20080018673A1 (en) * | 2006-07-24 | 2008-01-24 | Peter James Fricke | Display element having substantially equally spaced human visual system (HVS) perceived lightness levels |
DE102011003639A1 (de) * | 2010-11-11 | 2012-05-16 | Aeg Gesellschaft für Moderne Informationssysteme mbH | Flüssigkristallanzeige |
WO2016116040A1 (en) * | 2015-01-20 | 2016-07-28 | The Hong Kong University Of Science And Technology | Standing helix ferroelectric liquid crystal display cell |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2824798A1 (de) * | 1978-06-06 | 1979-12-13 | Siemens Ag | Fluessigkristallzelle |
US4563059A (en) * | 1983-01-10 | 1986-01-07 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
FR2518299B1 (fr) * | 1981-12-15 | 1990-07-20 | Telemecanique Electrique | Dispositif indicateur de pression de consigne pour un manostat |
NL8200069A (nl) * | 1982-01-11 | 1983-08-01 | Philips Nv | Weergeefinrichting met vloeibaar kristal. |
US4655561A (en) * | 1983-04-19 | 1987-04-07 | Canon Kabushiki Kaisha | Method of driving optical modulation device using ferroelectric liquid crystal |
JPS60144721A (ja) * | 1984-01-06 | 1985-07-31 | Canon Inc | 画像形成装置 |
US4709995A (en) * | 1984-08-18 | 1987-12-01 | Canon Kabushiki Kaisha | Ferroelectric display panel and driving method therefor to achieve gray scale |
US4712877A (en) * | 1985-01-18 | 1987-12-15 | Canon Kabushiki Kaisha | Ferroelectric display panel of varying thickness and driving method therefor |
US4664480A (en) * | 1985-04-26 | 1987-05-12 | American Telephone And Telegraph Company, At&T Bell Laboratories | Alignment technique for liquid crystal devices |
JPS62119521A (ja) * | 1985-11-19 | 1987-05-30 | Canon Inc | 光学変調装置 |
-
1987
- 1987-03-27 US US07/030,569 patent/US4796980A/en not_active Expired - Lifetime
- 1987-04-01 ES ES198787104841T patent/ES2035825T3/es not_active Expired - Lifetime
- 1987-04-01 EP EP87104841A patent/EP0240010B1/en not_active Expired
- 1987-04-01 DE DE8787104841T patent/DE3782353T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3782353D1 (de) | 1992-12-03 |
EP0240010A1 (en) | 1987-10-07 |
DE3782353T2 (de) | 1993-04-08 |
EP0240010B1 (en) | 1992-10-28 |
US4796980A (en) | 1989-01-10 |
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Legal Events
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FG2A | Definitive protection |
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