BISTABLE LIQUID CRYSTAL DISPLAY DEVICE
A bistable liquid crystal display device comprises: a first cell wall ( 1 ) and a second cell wall ( 1 ') enclosing a layer of a nematic liquid crystal material ( 5 ) and electrodes ( 2, 2 ') for applying an electric field across at least some of the liquid crystal material ( 5 ). A first...
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| creator | KITSON STEPHEN CHRISTOPHER SIKHARULIDZE DAVID |
| description | A bistable liquid crystal display device comprises: a first cell wall ( 1 ) and a second cell wall ( 1 ') enclosing a layer of a nematic liquid crystal material ( 5 ) and electrodes ( 2, 2 ') for applying an electric field across at least some of the liquid crystal material ( 5 ). A first alignment structure is provided on an inner surface of the first cell wall ( 1 ), comprising a grating ( 3 ) which tends to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment substantially without pre-tilt. A second alignment structure is provided on an inner surface of the second cell wall ( 1 '), comprising an array of posts ( 4 ) or holes which tend to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment with pre-tilt. The surface of the second alignment structure has a higher anchoring strength than does the surface of the first alignment structure, and two stable molecular configurations of the liquid crystal material ( 5 ) can exist after suitable electrical signals have been applied to the electrodes ( 2, 2 '). Other aspects of the invention provide a method of manufacturing the device and a method of addressing the device. |
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A first alignment structure is provided on an inner surface of the first cell wall ( 1 ), comprising a grating ( 3 ) which tends to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment substantially without pre-tilt. A second alignment structure is provided on an inner surface of the second cell wall ( 1 '), comprising an array of posts ( 4 ) or holes which tend to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment with pre-tilt. The surface of the second alignment structure has a higher anchoring strength than does the surface of the first alignment structure, and two stable molecular configurations of the liquid crystal material ( 5 ) can exist after suitable electrical signals have been applied to the electrodes ( 2, 2 '). Other aspects of the invention provide a method of manufacturing the device and a method of addressing the device.</description><language>eng</language><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 ; FREQUENCY-CHANGING ; NON-LINEAR OPTICS ; OPTICAL ANALOGUE/DIGITAL CONVERTERS ; OPTICAL LOGIC ELEMENTS ; OPTICS ; PHYSICS ; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><creationdate>2007</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=20070927&DB=EPODOC&CC=US&NR=2007222932A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20070927&DB=EPODOC&CC=US&NR=2007222932A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KITSON STEPHEN CHRISTOPHER</creatorcontrib><creatorcontrib>SIKHARULIDZE DAVID</creatorcontrib><title>BISTABLE LIQUID CRYSTAL DISPLAY DEVICE</title><description>A bistable liquid crystal display device comprises: a first cell wall ( 1 ) and a second cell wall ( 1 ') enclosing a layer of a nematic liquid crystal material ( 5 ) and electrodes ( 2, 2 ') for applying an electric field across at least some of the liquid crystal material ( 5 ). A first alignment structure is provided on an inner surface of the first cell wall ( 1 ), comprising a grating ( 3 ) which tends to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment substantially without pre-tilt. A second alignment structure is provided on an inner surface of the second cell wall ( 1 '), comprising an array of posts ( 4 ) or holes which tend to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment with pre-tilt. The surface of the second alignment structure has a higher anchoring strength than does the surface of the first alignment structure, and two stable molecular configurations of the liquid crystal material ( 5 ) can exist after suitable electrical signals have been applied to the electrodes ( 2, 2 '). Other aspects of the invention provide a method of manufacturing the device and a method of addressing the device.</description><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>FREQUENCY-CHANGING</subject><subject>NON-LINEAR OPTICS</subject><subject>OPTICAL ANALOGUE/DIGITAL CONVERTERS</subject><subject>OPTICAL LOGIC ELEMENTS</subject><subject>OPTICS</subject><subject>PHYSICS</subject><subject>TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2007</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFBz8gwOcXTycVXw8QwM9XRRcA6KBAr4KLh4Bgf4OEYquLiGeTq78jCwpiXmFKfyQmluBmU31xBnD93Ugvz41OKCxOTUvNSS-NBgIwMDcyMjI0tjI0dDY-JUAQBPHCRx</recordid><startdate>20070927</startdate><enddate>20070927</enddate><creator>KITSON STEPHEN CHRISTOPHER</creator><creator>SIKHARULIDZE DAVID</creator><scope>EVB</scope></search><sort><creationdate>20070927</creationdate><title>BISTABLE LIQUID CRYSTAL DISPLAY DEVICE</title><author>KITSON STEPHEN CHRISTOPHER ; SIKHARULIDZE DAVID</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2007222932A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2007</creationdate><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>FREQUENCY-CHANGING</topic><topic>NON-LINEAR OPTICS</topic><topic>OPTICAL ANALOGUE/DIGITAL CONVERTERS</topic><topic>OPTICAL LOGIC ELEMENTS</topic><topic>OPTICS</topic><topic>PHYSICS</topic><topic>TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</topic><toplevel>online_resources</toplevel><creatorcontrib>KITSON STEPHEN CHRISTOPHER</creatorcontrib><creatorcontrib>SIKHARULIDZE DAVID</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KITSON STEPHEN CHRISTOPHER</au><au>SIKHARULIDZE DAVID</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>BISTABLE LIQUID CRYSTAL DISPLAY DEVICE</title><date>2007-09-27</date><risdate>2007</risdate><abstract>A bistable liquid crystal display device comprises: a first cell wall ( 1 ) and a second cell wall ( 1 ') enclosing a layer of a nematic liquid crystal material ( 5 ) and electrodes ( 2, 2 ') for applying an electric field across at least some of the liquid crystal material ( 5 ). A first alignment structure is provided on an inner surface of the first cell wall ( 1 ), comprising a grating ( 3 ) which tends to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment substantially without pre-tilt. A second alignment structure is provided on an inner surface of the second cell wall ( 1 '), comprising an array of posts ( 4 ) or holes which tend to induce adjacent molecules of the liquid crystal material ( 5 ) to adopt a uniform planar alignment with pre-tilt. The surface of the second alignment structure has a higher anchoring strength than does the surface of the first alignment structure, and two stable molecular configurations of the liquid crystal material ( 5 ) can exist after suitable electrical signals have been applied to the electrodes ( 2, 2 '). Other aspects of the invention provide a method of manufacturing the device and a method of addressing the device.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | 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 FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | BISTABLE LIQUID CRYSTAL DISPLAY DEVICE |
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