公开(公告)号：JP2006144024A

公开(公告)日：2006-06-08

申请号：JP2005368894

申请日：2005-12-21

Applicant: Displaytech Inc ,  Hoechst Ag ,  ディスプレイテック,インコーポレイテッドDisplaytech, Incorporated ,  ヘキスト・アクチェンゲゼルシャフトHoechst Aktiengesellschaft

Inventor： WAND MICHAEL D ,  HANDSCHY MARK ,  ESCHER CLAUS ,  VOHRA ROHINI T

IPC: C09K19/02 ,  C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/141

CPC classification number: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/0225 ,  C09K19/04 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3441 ,  C09K19/586 ,  C09K19/588 ,  G02F1/141 ,  G02F2001/1414

Abstract: PROBLEM TO BE SOLVED: To provide fast response, high contrast distorted helix ferroelectric liquid crystal devices, and to provide ferroelectric liquid crystal compositions useful therein. SOLUTION: In a distorted helix ferroelectric liquid crystal cell in which a ferromagnetic liquid crystal layer having a known thickness is disposed between electrodes at least whose one is transparent or semi-transparent, the optical anisotropy of the device is changed by applying an electric voltage to the electrodes through the later. The ferroelectric liquid crystal having the layer exhibits a ferroelectric phase, and further exhibits a chiral nematic phase at higher temperatures than temperatures exhibiting the ferroelectric phase. Since the natural helix pitch of the ferroelectric liquid crystal is sufficiently shorter than the thickness of the ferroelectric liquid crystal layer of the device in the ferroelectric phase, the ferroelectric liquid crystal has a helix-arranged vector structure and does not have a stable surface. Since the natural helix pitch of the ferroelectric liquid crystal is sufficiently longer than the thickness of the ferroelectric liquid crystal layer of the device in the nematic phase, the ferroelectric liquid crystal layer of the device is easily arranged. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供快速响应，高对比度变形的螺旋铁电液晶器件，并提供其中有用的铁电液晶组合物。 解决方案：在其中具有已知厚度的铁磁性液晶层至少设置为透明或半透明的电极之间的扭曲螺旋铁电液晶单元中，通过施加光学各向异性 通过电极对电极的电压。 具有该层的铁电液晶呈现铁电相，并且在比显示铁电相的温度高的温度下还显示手性向列相。 由于铁电液晶的自然螺旋线距离铁电体相中的器件的铁电液晶层的厚度充分短，所以铁电液晶具有螺旋排列的矢量结构，不具有稳定的表面。 由于铁电液晶的自然螺旋间距比在向列相中的器件的铁电液晶层的厚度充分长，因此容易布置该器件的铁电液晶层。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006079110A

公开(公告)日：2006-03-23

申请号：JP2005285568

申请日：2005-09-29

Applicant: Displaytech Inc ,  Hoechst Ag ,  ディスプレイテック,インコーポレイテッドDisplaytech, Incorporated ,  ヘキスト・アクチェンゲゼルシャフトHoechst Aktiengesellschaft

Inventor： WAND MICHAEL D ,  HANDSCHY MARK ,  ESCHER CLAUS ,  VOHRA ROHINI T

IPC: G02F1/141 ,  C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337

CPC classification number: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/0225 ,  C09K19/04 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3441 ,  C09K19/586 ,  C09K19/588 ,  G02F1/141 ,  G02F2001/1414

Abstract: PROBLEM TO BE SOLVED: To provide a distorted helix effect electro-optic device having fast response and high contrast and to provide a ferroelectric liquid crystal composition used therefor. SOLUTION: A distorted helix ferroelectric liquid crystal cell is provided with a ferroelectric liquid crystal layer with well-known thickness held between a plurality of electrode plates at least one of which is transparent or semi-transparent, wherein the optical anisotropy of the device is varied by applying a voltage onto the electrode plates through the ferroelectric liquid crystal layer. The ferroelectric liquid crystal having the layer exhibits a ferroelectric phase and exhibits a chiral nematic phase at a temperature higher than the temperature of the ferroelectric phase. The natural helix pitch of the ferroelectric liquid crystal in the ferroelectric phase is sufficiently tighter than the thickness of the ferroelectric liquid crystal layer of the device, the ferroelectric liquid crystal has a helical director structure and is not surface-stabilized. In the nematic phase, the natural helix pitch of the ferroelectric liquid crystal is sufficiently greater than the thickness of the ferroelectric liquid crystal layer to facilitate alignment of the ferroelectric liquid crystal layer in the device. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有快速响应和高对比度的扭曲的螺旋效应电光装置，并提供用于其的铁电液晶组合物。 解决方案：扭曲的螺旋铁电液晶单元设置有铁电液晶层，具有公知的厚度保持在多个电极板之间，其中至少一个电极板是透明或半透明的，其中光学各向异性 通过铁电液晶层在电极板上施加电压来改变器件。 具有该层的铁电液晶呈现铁电相，并且在比铁电相的温度高的温度下显示手性向列相。 铁电相中铁电液晶的天然螺旋线距离装置的铁电液晶层的厚度足够紧，铁电液晶具有螺旋导向器结构并且不是表面稳定的。 在向列相中，强电介质液晶的天然螺旋螺距足够大于强电介质液晶层的厚度，以便于强电介质液晶层在器件中的取向。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004318172A

公开(公告)日：2004-11-11

申请号：JP2004178960

申请日：2004-06-16

Applicant: Displaytech Inc ,  Hoechst Ag ,  ディスプレイテック,インコーポレイテッドDisplaytech, Incorporated ,  ヘキスト・アクチェンゲゼルシャフトHoechst Aktiengesellschaft

Inventor： WAND MICHAEL D ,  HANDSCHY MARK ,  ESCHER CLAUS ,  VOHRA ROHINI T

IPC: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/141

CPC classification number: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/0225 ,  C09K19/04 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3441 ,  C09K19/586 ,  C09K19/588 ,  G02F1/141 ,  G02F2001/1414

Abstract: PROBLEM TO BE SOLVED: To provide a distorted helix ferroelectric liquid crystal device with fast response and high contrast and a ferroelectric liquid crystal composition used therefor. SOLUTION: In a distorted helix ferroelectric liquid crystal cell comprising a ferroelectric liquid crystal layer with known thickness disposed between a plurality of electrode plates of which at least one is transparent or translucent, optical anisotropy of the device is varied by applying voltage to the electrode plates via the layer. The ferroelectric liquid crystal constituting the layer exhibits a ferroelectric phase and exhibits a chiral nematic phase at a temperature higher than that at which a ferroelectric phase is exhibited. In the ferroelectric phase, as a natural helical pitch of the ferroelectric liquid crystal is sufficiently tighter than the thickness of the ferroelectric liquid crystal layer in the device, the ferroelectric liquid crystal has a helix orientated vector structure and is not surface-stabilized. In the nematic phase, as the natural helical pitch of the ferroelectric liquid crystal is sufficiently greater than the thickness of the ferroelectric liquid crystal layer to facilitate alignment of the ferroelectric crystal layer in the device. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有快速响应和高对比度的扭曲螺旋铁电液晶装置和用于其的铁电液晶组合物。 解决方案：在具有已知厚度的强电介质液晶层的扭曲的铁电液晶单元中，其设置在多个电极板之间，其中至少一个是透明或半透明的，器件的光学各向异性通过施加电压而变化 电极板经过层。 构成该层的铁电液晶呈现铁电相，并且在比显示铁电相的温度高的温度下显示手性向列相。 在铁电相中，由于铁电液晶的天然螺旋间距比装置中的铁电液晶层的厚度充分紧密，所以铁电液晶具有螺旋取向矢量结构，不表面稳定。 在向列相中，由于强电介质液晶的天然螺旋间距足够大于强电介质液晶层的厚度，以便于器件中铁电晶体层的取向。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004029717A

公开(公告)日：2004-01-29

申请号：JP2003037499

申请日：2003-02-14

Applicant: Displaytech Inc ,  Hoechst Ag ,  ディスプレイテック,インコーポレイテッドDisplaytech, Incorporated ,  ヘキスト・アクチェンゲゼルシャフトHoechst Aktiengesellschaft

Inventor： WAND MICHAEL D ,  HANDSCHY MARK ,  ESCHER CLAUS ,  VOHRA ROHINI T

IPC: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/141

CPC classification number: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/0225 ,  C09K19/04 ,  C09K19/126 ,  C09K19/2021 ,  C09K19/3441 ,  C09K19/586 ,  C09K19/588 ,  G02F1/141 ,  G02F2001/1414

Abstract: PROBLEM TO BE SOLVED: To provide a spiral ferroelectric liquid crystal element DHFLC having high responsiveness and high contrast and ferroelectric liquid crystal composition used therefor. SOLUTION: In a spiral ferroelectric liquid crystal cell 10 provided with a ferroelectric liquid crystal layer 15 of known thickness between a plurality of electrodes one of which is at least transparent or semi-transparent, the optical anisotropy of the element is changed by applying voltage across the electrodes via this layer. The layered ferroelectric liquid crystal 15 exhibits a ferroelectric phase, and exhibits a chiral nematic phase at temperatures higher than those at which the ferroelectric phase is exhibited. In the ferroelectric phase, the natural spiral pitch of the ferroelectric liquid crystal is sufficiently shorter than the thickness of the ferroelectric liquid crystal layer 15 of the element, therefore, the ferroelectric liquid crystal has a spirally oriented vector structure and is not stabilized on the surface. In the nematic phase, the natural spiral pitch of the ferroelectric liquid crystal is sufficiently longer than the thickness of the ferroelectric liquid crystal layer 15, therefore, orientation of the ferroelectric liquid crystal layer 15 of the element becomes easy. COPYRIGHT: (C)2004,JPO

公开(公告)号：CA2088934C

公开(公告)日：2003-06-03

申请号：CA2088934

申请日：1993-02-08

Applicant: DISPLAYTECH INC ,  HOECHST AG

Inventor： WAND MICHAEL D ,  HANDSCHY MARK A ,  ESCHER CLAUS ,  VOHRA ROHINI T

IPC: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/135

Abstract: High-contrast electro-optic device contain non-surface stabilized FLC cells which retain a helical diameter (~) structure and exhibit a change in optical anisotropy as a function of the magnitude of an applied electric field or driving voltage. The FLC cells incorporate chiral ferroelectric liquid crystals which exhibit a ferroelectric phase and a chiral nematic (N*) phase at temperatures above the ferroelectric phase and comprise uniformly spaced electrode-containing plates between which the FLC is aligned. The cell is provided with means for detecting the change in optical anisotropy in the FLC induced by the application of the electric field.

公开(公告)号：DE59109158D1

公开(公告)日：1999-11-11

申请号：DE59109158

申请日：1991-12-18

Applicant: HOECHST AG

Inventor： SCHLOSSER HUBERT ,  WINGEN RAINER ,  ILLIAN GERD ,  ESCHER CLAUS

IPC: C07D213/61 ,  C07D213/64 ,  C07D213/65 ,  C07D401/04 ,  C07D401/12 ,  C07D401/14 ,  C07D405/04 ,  C07D405/12 ,  C07D417/04 ,  C07D417/12 ,  C07D417/14 ,  C07F5/02 ,  C07F7/08 ,  C07F7/10 ,  C09K19/34 ,  C09K19/40 ,  C09K19/42 ,  G02F1/137

公开(公告)号：AT185342T

公开(公告)日：1999-10-15

申请号：AT92901407

申请日：1991-12-18

Applicant: HOECHST AG

Inventor： SCHLOSSER HUBERT ,  WINGEN RAINER ,  ILLIAN GERD ,  ESCHER CLAUS

IPC: C07D213/61 ,  C07D213/64 ,  C07D213/65 ,  C07D401/04 ,  C07D401/12 ,  C07D401/14 ,  C07D405/04 ,  C07D405/12 ,  C07D417/04 ,  C07D417/12 ,  C07D417/14 ,  C07F5/02 ,  C07F7/08 ,  C07F7/10 ,  C09K19/34 ,  C09K19/40 ,  C09K19/42 ,  G02F1/137

公开(公告)号：DE59602394D1

公开(公告)日：1999-08-12

申请号：DE59602394

申请日：1996-03-15

Applicant: HOECHST AG

Inventor： KUEHN HEINRICH ,  ESCHER CLAUS ,  LANDES KLAUS ,  HASLBECK PETER ,  GASCHLER OTFRIED ,  MUELLER MARKUS ,  MUNTWYLER PETER

IPC: B05B7/22 ,  B22D23/00 ,  B41N1/00 ,  B41N3/03 ,  B41N7/04 ,  C23C4/00 ,  C23C4/02 ,  C23C4/10 ,  C23C4/12 ,  F24J2/48 ,  H05H1/42

Abstract: The invention concerns a method of coating a base with a plasma-sprayed layer with a spray powder contained in the molten state in the plasma. In the proposed process, the powder is introduced via powder feed ducts in the vicinity of the neutrode(s) or anode(s) or between the two into a channel of a plasma spray device, at least one arc being at least 20 mm in length at least some of the time and the base to be coated being a so-called continuous strip or large-surface unit of at least 0.005 m . The invention also concerns a device for coating a base, comprising a number of plasma spray devices and at least one noise-protection cabinet; the plasma spray devices each comprise at least one neutrode and at least one anode for producing an arc of at least 20 mm in length and for heating a spray powder. The spray powder is introduced in the vicinity of the anode(s) or neutrode(s) and/or between the two, and the device is provided with a device for micro-roughing the article in the form of a mechanical, physical or radiation micro-roughing unit.

公开(公告)号：CA1339994C

公开(公告)日：1998-08-11

申请号：CA564256

申请日：1988-04-15

Applicant: HOECHST AG

Inventor： WINGEN RAINER ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  HEMMERLING WOLFGANG ,  MUELLER INGRID ,  OHLENDORF DIETER

IPC: C07D317/24 ,  C07D317/32 ,  C07D317/72 ,  C07D405/12 ,  C07D407/12 ,  C07D409/12 ,  C09K19/02 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/133 ,  G02F1/137 ,  G02F1/141 ,  C07D405/00

Abstract: Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel, optically active 1,3-dioxolane-4-carboxylates. Optically active, mesogenic 1,3-dioxolane-4-carboxylates are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having large electroclinic coefficients. Their particular advantage is that they induce a helix of very large pitch, meaning that helix compensation by further dopes is unnecessary. In addition, 1,3- dioxolane-4-carboxylates exhibit high UV stability. The 1,3- dioxolane-4-carboxylates of the present invention are of the following general Formula (I):

公开(公告)号：AT107345T

公开(公告)日：1994-07-15

申请号：AT90904815

申请日：1990-03-21

Applicant: HOECHST AG

Inventor： DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  HARADA TAKAMASA ,  HEMMERLING WOLFGANG ,  ILLIAN GERHARD ,  MUELLER INGRID ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: G02F1/13 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  C09K19/58

Abstract: PCT No. PCT/EP90/00458 Sec. 371 Date Nov. 6, 1991 Sec. 102(e) Date Nov. 6, 1991 PCT Filed Mar. 21, 1990 PCT Pub. No. WO90/11336 PCT Pub. Date Oct. 4, 1990.The novel liquid-crystalline mixtures (in the case of ferroelectric behavior they additionally contain an optically active compound as dope) are based on at least two mixture components of the general formula (I) and at least one carboxylate of the general formula (II), (III) or (IV). (* CHEMICAL STRUCTURE *) (I) (* CHEMICAL STRUCTURE *) (II) X = O or a single bond (* CHEMICAL STRUCTURE *) (III) (* CHEMICAL STRUCTURE *) (IV) The mixtures have favorable properties for use in electrooptical display elements, such as high contrast, low melting point and short switching times.