A liquid crystal display device using disclination lines to accelerate a change of state
A liquid crystal display (LCD) device comprises a liquid crystal (LC) layer 1 disposed between two substrates 2. The device includes means for generating a pre-determined pattern of one or more disclination lines 10 in a portion of the LC layer. The generating means may include applying an electric...
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| creator | BRIAN HENLEY ROBERT WINLOW HARRY GARTH WALTON DIANA CYNTHIA ULRICH |
| description | A liquid crystal display (LCD) device comprises a liquid crystal (LC) layer 1 disposed between two substrates 2. The device includes means for generating a pre-determined pattern of one or more disclination lines 10 in a portion of the LC layer. The generating means may include applying an electric field distribution to the LC layer. Each disclination line (domain wall) separates two different, stable asymmetric H-states (splay state). When a desired LC state, such as a V- (bend) or T-state (twisted), is generated in a region 9 of the LC layer, a disclination line 11 bounding region 9 can propagate along the disclination line(s) 10. This increases the speed with wich the region 9 of the desired LC state grows in area. A nucleation region 8 may be provided. A method of making a LCD substrate is described comprising providing a substrate having a portion of increased thickness forming a step. The edge of the step is made non linear (fig. 10). An alignment layer is disposed on the upper surface of the substrate and rubbed along a rubbing direction. The non-linear edge of the step is the leading edge during rubbing. The non-linear edge modifies the rubbing strength. |
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The device includes means for generating a pre-determined pattern of one or more disclination lines 10 in a portion of the LC layer. The generating means may include applying an electric field distribution to the LC layer. Each disclination line (domain wall) separates two different, stable asymmetric H-states (splay state). When a desired LC state, such as a V- (bend) or T-state (twisted), is generated in a region 9 of the LC layer, a disclination line 11 bounding region 9 can propagate along the disclination line(s) 10. This increases the speed with wich the region 9 of the desired LC state grows in area. A nucleation region 8 may be provided. A method of making a LCD substrate is described comprising providing a substrate having a portion of increased thickness forming a step. The edge of the step is made non linear (fig. 10). An alignment layer is disposed on the upper surface of the substrate and rubbed along a rubbing direction. The non-linear edge of the step is the leading edge during rubbing. The non-linear edge modifies the rubbing strength.</description><edition>7</edition><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>2003</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=20030115&DB=EPODOC&CC=GB&NR=2377501A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20030115&DB=EPODOC&CC=GB&NR=2377501A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BRIAN HENLEY</creatorcontrib><creatorcontrib>ROBERT WINLOW</creatorcontrib><creatorcontrib>HARRY GARTH WALTON</creatorcontrib><creatorcontrib>DIANA CYNTHIA ULRICH</creatorcontrib><title>A liquid crystal display device using disclination lines to accelerate a change of state</title><description>A liquid crystal display (LCD) device comprises a liquid crystal (LC) layer 1 disposed between two substrates 2. The device includes means for generating a pre-determined pattern of one or more disclination lines 10 in a portion of the LC layer. The generating means may include applying an electric field distribution to the LC layer. Each disclination line (domain wall) separates two different, stable asymmetric H-states (splay state). When a desired LC state, such as a V- (bend) or T-state (twisted), is generated in a region 9 of the LC layer, a disclination line 11 bounding region 9 can propagate along the disclination line(s) 10. This increases the speed with wich the region 9 of the desired LC state grows in area. A nucleation region 8 may be provided. A method of making a LCD substrate is described comprising providing a substrate having a portion of increased thickness forming a step. The edge of the step is made non linear (fig. 10). An alignment layer is disposed on the upper surface of the substrate and rubbed along a rubbing direction. 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The device includes means for generating a pre-determined pattern of one or more disclination lines 10 in a portion of the LC layer. The generating means may include applying an electric field distribution to the LC layer. Each disclination line (domain wall) separates two different, stable asymmetric H-states (splay state). When a desired LC state, such as a V- (bend) or T-state (twisted), is generated in a region 9 of the LC layer, a disclination line 11 bounding region 9 can propagate along the disclination line(s) 10. This increases the speed with wich the region 9 of the desired LC state grows in area. A nucleation region 8 may be provided. A method of making a LCD substrate is described comprising providing a substrate having a portion of increased thickness forming a step. The edge of the step is made non linear (fig. 10). An alignment layer is disposed on the upper surface of the substrate and rubbed along a rubbing direction. The non-linear edge of the step is the leading edge during rubbing. The non-linear edge modifies the rubbing strength.</abstract><edition>7</edition><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 | A liquid crystal display device using disclination lines to accelerate a change of state |
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