FR2420802A1 - Cellule d'affichage electro-optique passif - Google Patents
Cellule d'affichage electro-optique passifInfo
- Publication number
- FR2420802A1 FR2420802A1 FR7906940A FR7906940A FR2420802A1 FR 2420802 A1 FR2420802 A1 FR 2420802A1 FR 7906940 A FR7906940 A FR 7906940A FR 7906940 A FR7906940 A FR 7906940A FR 2420802 A1 FR2420802 A1 FR 2420802A1
- Authority
- FR
- France
- Prior art keywords
- segments
- mixture
- layer
- cell
- optical display
- 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
Links
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
- G02F1/133—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
- G02F1/13731—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 a field-induced phase transition
- G02F1/13737—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 a field-induced phase transition in liquid crystals doped with a pleochroic dye
-
- 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
- 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
- G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
Cellule d'affichage électro-optique passif constituée par une couche d'un mélange de cristal liquide nématique à anisotropie diélectrique positive, d'un composé optiquement actif et de molécules dichroïques. Les faces internes des plaques de la cellule sont recouvertes de couches d'alignement telles que, dans l'aire située en dehors des zones d'affichage (segments), la couche du mélange a une structure homéotrope dans toute son épaisseur. Au droit des segments la cellule est agencée de façon que la couche du mélange a une structure hélicoïdale de sorte que la lumière incidente est absorbée dans ces zones lorsque celles-ci ne sont pas activées, et que la couche du mélange s'oriente selon une structure homéotrope sous l'action d'un champ électrique. Ainsi, lorsque la cellule est au repos, tous ses segments sont visibles, l'affichage s'effectuant en << effaçant >> les segments qui ne doivent pas apparaître, seuls les segments non activés demeurant visibles en sombre sur fond clair.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH313578A CH621200A5 (fr) | 1978-03-22 | 1978-03-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2420802A1 true FR2420802A1 (fr) | 1979-10-19 |
FR2420802B1 FR2420802B1 (fr) | 1984-04-06 |
Family
ID=4249369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7906940A Granted FR2420802A1 (fr) | 1978-03-22 | 1979-03-20 | Cellule d'affichage electro-optique passif |
Country Status (8)
Country | Link |
---|---|
US (1) | US4277144A (fr) |
JP (1) | JPS54143162A (fr) |
AT (1) | AT380576B (fr) |
CH (1) | CH621200A5 (fr) |
DE (1) | DE2853639C3 (fr) |
FR (1) | FR2420802A1 (fr) |
GB (1) | GB2020053B (fr) |
NL (1) | NL179685C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0795774A2 (fr) * | 1996-03-11 | 1997-09-17 | Canon Kabushiki Kaisha | Dispositif à cristal liquide et son procédé de fabrication |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS564121A (en) * | 1979-06-22 | 1981-01-17 | Stanley Electric Co Ltd | Liquid crystal display device |
US5227905A (en) * | 1980-01-08 | 1993-07-13 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
US4813767A (en) * | 1980-01-08 | 1989-03-21 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
US5083855A (en) * | 1980-01-08 | 1992-01-28 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
USRE34966E (en) * | 1980-01-08 | 1995-06-13 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices with LC molecules aligned at angle Ω(α) from normal to substrates |
US4958916A (en) * | 1980-01-08 | 1990-09-25 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
US4840463A (en) * | 1987-08-19 | 1989-06-20 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
USRE34950E (en) * | 1980-01-08 | 1995-05-23 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices with means for aligning LC molecules at Ω(α) from normal to the means |
US4563059A (en) * | 1983-01-10 | 1986-01-07 | Clark Noel A | Surface stabilized ferroelectric liquid crystal devices |
JPS56122866U (fr) * | 1980-02-20 | 1981-09-18 | ||
NL8200069A (nl) * | 1982-01-11 | 1983-08-01 | Philips Nv | Weergeefinrichting met vloeibaar kristal. |
JPS5979221A (ja) * | 1982-10-29 | 1984-05-08 | Canon Inc | 電気光学装置 |
YU44866B (en) * | 1983-09-09 | 1991-04-30 | Inst Stefan Jozef | Matrix lcd with an internal reflector and a measuring net |
US4726659A (en) * | 1986-02-24 | 1988-02-23 | Rca Corporation | Display device having different alignment layers |
JPS62210421A (ja) * | 1986-03-11 | 1987-09-16 | Canon Inc | 光学変調素子 |
US4813771A (en) * | 1987-10-15 | 1989-03-21 | Displaytech Incorporated | Electro-optic switching devices using ferroelectric liquid crystals |
JP2801102B2 (ja) * | 1991-02-01 | 1998-09-21 | 富士通株式会社 | 液晶表示装置 |
US5631754A (en) * | 1995-10-20 | 1997-05-20 | Physical Optics Corporation | Holographic high contrast viewing screen embedded in a liquid crystal display |
JP2000162624A (ja) * | 1998-11-26 | 2000-06-16 | Sanyo Electric Co Ltd | 反射型液晶表示装置 |
JP3636641B2 (ja) | 1999-08-20 | 2005-04-06 | セイコーエプソン株式会社 | 電気光学装置 |
JP3852342B2 (ja) * | 2002-01-28 | 2006-11-29 | セイコーエプソン株式会社 | 反射板、反射板の製造方法、液晶装置、電子機器 |
FR2957429B1 (fr) * | 2010-03-12 | 2012-08-17 | Commissariat Energie Atomique | Modulateur de phase a base de cristal liquide a structure helicoidale |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3833287A (en) * | 1973-03-08 | 1974-09-03 | Bell Telephone Labor Inc | Guest-host liquid crystal device |
FR2416519A1 (fr) * | 1978-02-06 | 1979-08-31 | Ebauches Sa | Cellule d'affichage electro-optique passif |
FR2417156A1 (fr) * | 1978-02-13 | 1979-09-07 | Siemens Ag | Dispositif d'affichage a cristal liquide |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4997636A (fr) * | 1973-01-18 | 1974-09-14 | ||
US4112157A (en) * | 1973-06-18 | 1978-09-05 | Siemens Aktiengesellschaft | Method of producing a film which promotes homeotropic orientation of liquid crystals and a liquid crystal utilizing the film |
-
1978
- 1978-03-22 CH CH313578A patent/CH621200A5/fr not_active IP Right Cessation
- 1978-12-08 DE DE2853639A patent/DE2853639C3/de not_active Expired
-
1979
- 1979-03-08 AT AT0174679A patent/AT380576B/de not_active IP Right Cessation
- 1979-03-20 FR FR7906940A patent/FR2420802A1/fr active Granted
- 1979-03-20 GB GB7909677A patent/GB2020053B/en not_active Expired
- 1979-03-20 US US06/022,199 patent/US4277144A/en not_active Expired - Lifetime
- 1979-03-22 JP JP3241079A patent/JPS54143162A/ja active Pending
- 1979-03-22 NL NLAANVRAGE7902252,A patent/NL179685C/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3833287A (en) * | 1973-03-08 | 1974-09-03 | Bell Telephone Labor Inc | Guest-host liquid crystal device |
FR2416519A1 (fr) * | 1978-02-06 | 1979-08-31 | Ebauches Sa | Cellule d'affichage electro-optique passif |
FR2417156A1 (fr) * | 1978-02-13 | 1979-09-07 | Siemens Ag | Dispositif d'affichage a cristal liquide |
Non-Patent Citations (1)
Title |
---|
EXBK/74 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0795774A2 (fr) * | 1996-03-11 | 1997-09-17 | Canon Kabushiki Kaisha | Dispositif à cristal liquide et son procédé de fabrication |
EP0795774A3 (fr) * | 1996-03-11 | 1998-03-25 | Canon Kabushiki Kaisha | Dispositif à cristal liquide et son procédé de fabrication |
US6320639B1 (en) | 1996-03-11 | 2001-11-20 | Canon Kabushiki Kaisha | Liquid crystal device and process for production thereof |
Also Published As
Publication number | Publication date |
---|---|
DE2853639C3 (de) | 1987-10-22 |
ATA174679A (de) | 1985-10-15 |
FR2420802B1 (fr) | 1984-04-06 |
CH621200A5 (fr) | 1981-01-15 |
NL179685B (nl) | 1986-05-16 |
DE2853639B2 (de) | 1981-01-29 |
JPS54143162A (en) | 1979-11-08 |
US4277144A (en) | 1981-07-07 |
GB2020053B (en) | 1982-09-15 |
GB2020053A (en) | 1979-11-07 |
NL179685C (nl) | 1986-10-16 |
NL7902252A (nl) | 1979-09-25 |
DE2853639A1 (de) | 1979-09-27 |
AT380576B (de) | 1986-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |