Monostable ferroelectric active matrix display
A monostable ferroelectric active matrix display includes a single domain liquid crystal layer with specified values of pre-tilt and layer tilt angles and dielectric anisotropy. A monostable ferroelectric active matrix display includes a liquid crystal layer in the form of a single domain with a cle...
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| creator | DUEBAL, HANS-ROLF NONAKA, TOSHIAKI WINGEN, RAINER |
| description | A monostable ferroelectric active matrix display includes a single domain liquid crystal layer with specified values of pre-tilt and layer tilt angles and dielectric anisotropy. A monostable ferroelectric active matrix display includes a liquid crystal layer in the form of a single domain with a clearly defined direction of the layer normals (z) of the smC *>phase, the layer having (a) a chevron C2 geometry, a ratio of the sum of the pre-tilt and layer tilt angles to the tilt angle (WR = (Lkw + Prw)/Tiw) of greater than 0.1 and a dielectric anisotropy of less than 3; (b) a chevron C1 geometry, a pre-tilt angle (Prw) of >=5[deg] and a ratio of pre-tilt angle to layer tilt angle (Prw/Lkw) of greater than 0.7; (c) a bookshelf geometry and a pre-tilt angle (Prw) of >=1[deg]; or (d) a spontaneous polarization (P) of 0.1-15 nC/cm 2>, a tilt angle (Tiw) of 9-45[deg], an absolute value of the ratio of the layer tilt angle to the pre-tilt angle of >=0.2, a helix path height in the chiral nematic (cholesteric) phase of >=50 Micro within the temperature region of 5[deg]C above the smectic/nematic phase transformation and an absolute dielectric anisotropy value of less than 3. Independent claims are also included for the following: (i) a method of producing the above active matrix displays; and (ii) active matrix displays produced by the above method.
Das monostabile ferroelektrische Aktivmatrix-Display enthält eine Flüssigkristallschicht in Form einer Monodomäne mit einer eindeutig definierten Richtung der Schichtennormalen z der smC*-Phase, wobei die Flüssigkristallschicht eine Bücherbord-Geometrie aufweist. |
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Das monostabile ferroelektrische Aktivmatrix-Display enthält eine Flüssigkristallschicht in Form einer Monodomäne mit einer eindeutig definierten Richtung der Schichtennormalen z der smC*-Phase, wobei die Flüssigkristallschicht eine Bücherbord-Geometrie aufweist.</description><language>eng ; fre ; ger</language><subject>ADHESIVES ; CHEMISTRY ; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ; DYES ; FREQUENCY-CHANGING ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; NON-LINEAR OPTICS ; OPTICAL ANALOGUE/DIGITAL CONVERTERS ; OPTICAL LOGIC ELEMENTS ; OPTICS ; PAINTS ; PHYSICS ; POLISHES ; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><creationdate>2011</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110727&DB=EPODOC&CC=EP&NR=2348356A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110727&DB=EPODOC&CC=EP&NR=2348356A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DUEBAL, HANS-ROLF</creatorcontrib><creatorcontrib>NONAKA, TOSHIAKI</creatorcontrib><creatorcontrib>WINGEN, RAINER</creatorcontrib><title>Monostable ferroelectric active matrix display</title><description>A monostable ferroelectric active matrix display includes a single domain liquid crystal layer with specified values of pre-tilt and layer tilt angles and dielectric anisotropy. A monostable ferroelectric active matrix display includes a liquid crystal layer in the form of a single domain with a clearly defined direction of the layer normals (z) of the smC *>phase, the layer having (a) a chevron C2 geometry, a ratio of the sum of the pre-tilt and layer tilt angles to the tilt angle (WR = (Lkw + Prw)/Tiw) of greater than 0.1 and a dielectric anisotropy of less than 3; (b) a chevron C1 geometry, a pre-tilt angle (Prw) of >=5[deg] and a ratio of pre-tilt angle to layer tilt angle (Prw/Lkw) of greater than 0.7; (c) a bookshelf geometry and a pre-tilt angle (Prw) of >=1[deg]; or (d) a spontaneous polarization (P) of 0.1-15 nC/cm 2>, a tilt angle (Tiw) of 9-45[deg], an absolute value of the ratio of the layer tilt angle to the pre-tilt angle of >=0.2, a helix path height in the chiral nematic (cholesteric) phase of >=50 Micro within the temperature region of 5[deg]C above the smectic/nematic phase transformation and an absolute dielectric anisotropy value of less than 3. Independent claims are also included for the following: (i) a method of producing the above active matrix displays; and (ii) active matrix displays produced by the above method.
Das monostabile ferroelektrische Aktivmatrix-Display enthält eine Flüssigkristallschicht in Form einer Monodomäne mit einer eindeutig definierten Richtung der Schichtennormalen z der smC*-Phase, wobei die Flüssigkristallschicht eine Bücherbord-Geometrie aufweist.</description><subject>ADHESIVES</subject><subject>CHEMISTRY</subject><subject>DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING</subject><subject>DYES</subject><subject>FREQUENCY-CHANGING</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>NON-LINEAR OPTICS</subject><subject>OPTICAL ANALOGUE/DIGITAL CONVERTERS</subject><subject>OPTICAL LOGIC ELEMENTS</subject><subject>OPTICS</subject><subject>PAINTS</subject><subject>PHYSICS</subject><subject>POLISHES</subject><subject>TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2011</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDzzc_LLy5JTMpJVUhLLSrKT81JTS4pykxWSEwuySxLVchNBPIqFFIyiwtyEit5GFjTEnOKU3mhNDeDgptriLOHbmpBfnxqcUFicmpeakm8a4CRsYmFsamZo6ExEUoA6EAqvw</recordid><startdate>20110727</startdate><enddate>20110727</enddate><creator>DUEBAL, HANS-ROLF</creator><creator>NONAKA, TOSHIAKI</creator><creator>WINGEN, RAINER</creator><scope>EVB</scope></search><sort><creationdate>20110727</creationdate><title>Monostable ferroelectric active matrix display</title><author>DUEBAL, HANS-ROLF ; NONAKA, TOSHIAKI ; WINGEN, RAINER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2348356A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2011</creationdate><topic>ADHESIVES</topic><topic>CHEMISTRY</topic><topic>DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING</topic><topic>DYES</topic><topic>FREQUENCY-CHANGING</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>NON-LINEAR OPTICS</topic><topic>OPTICAL ANALOGUE/DIGITAL CONVERTERS</topic><topic>OPTICAL LOGIC ELEMENTS</topic><topic>OPTICS</topic><topic>PAINTS</topic><topic>PHYSICS</topic><topic>POLISHES</topic><topic>TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</topic><toplevel>online_resources</toplevel><creatorcontrib>DUEBAL, HANS-ROLF</creatorcontrib><creatorcontrib>NONAKA, TOSHIAKI</creatorcontrib><creatorcontrib>WINGEN, RAINER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>DUEBAL, HANS-ROLF</au><au>NONAKA, TOSHIAKI</au><au>WINGEN, RAINER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Monostable ferroelectric active matrix display</title><date>2011-07-27</date><risdate>2011</risdate><abstract>A monostable ferroelectric active matrix display includes a single domain liquid crystal layer with specified values of pre-tilt and layer tilt angles and dielectric anisotropy. A monostable ferroelectric active matrix display includes a liquid crystal layer in the form of a single domain with a clearly defined direction of the layer normals (z) of the smC *>phase, the layer having (a) a chevron C2 geometry, a ratio of the sum of the pre-tilt and layer tilt angles to the tilt angle (WR = (Lkw + Prw)/Tiw) of greater than 0.1 and a dielectric anisotropy of less than 3; (b) a chevron C1 geometry, a pre-tilt angle (Prw) of >=5[deg] and a ratio of pre-tilt angle to layer tilt angle (Prw/Lkw) of greater than 0.7; (c) a bookshelf geometry and a pre-tilt angle (Prw) of >=1[deg]; or (d) a spontaneous polarization (P) of 0.1-15 nC/cm 2>, a tilt angle (Tiw) of 9-45[deg], an absolute value of the ratio of the layer tilt angle to the pre-tilt angle of >=0.2, a helix path height in the chiral nematic (cholesteric) phase of >=50 Micro within the temperature region of 5[deg]C above the smectic/nematic phase transformation and an absolute dielectric anisotropy value of less than 3. Independent claims are also included for the following: (i) a method of producing the above active matrix displays; and (ii) active matrix displays produced by the above method.
Das monostabile ferroelektrische Aktivmatrix-Display enthält eine Flüssigkristallschicht in Form einer Monodomäne mit einer eindeutig definierten Richtung der Schichtennormalen z der smC*-Phase, wobei die Flüssigkristallschicht eine Bücherbord-Geometrie aufweist.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES CHEMISTRY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DYES FREQUENCY-CHANGING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | Monostable ferroelectric active matrix display |
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