发明名称 |
ELECTROOPTIC LIGHT CONTROL ELEMENT, ELECTROOPTIC DISPLAY AND CONTROL MEDIUM |
摘要 |
<p>A control medium for optical displays is characterized by having a clear enthalpy of no greater than 1.50 J/g and by having a dielectric susceptibility of at least 27 at 4 degrees above the clear point and/or the dielectric susceptibility of the medium is at least 35.5 at 4 degreesC above the clear point. A control medium (I) is characterized by having a clear enthalpy of no greater than 1.50 J/g and by having a dielectric susceptibility of at least 27 at 4 degrees above the clear point whereby media containing 8 %, 10% or 12% of the compound of formula (1) are excluded and/or the dielectric susceptibility of the medium is at least 35.5 at 4 degreesC above the clear point with the exclusion of two defined 10-component compositions. Independent claims are also included for: (1) an electrooptical light controlling element (II) comprising at least one substrate, an arrangement of electrodes, at least one element for the polarization of light and a control medium (I) whereby the element (II) is driven at a temperature where the medium (I) lies in a non-controlled state in the isotropic phase and the electrode arrangement can produce an electric field having a significant component parallel to the surface of the mesogenic control medium whereby the dielectric susceptibility of the control medium (I) is at least 25 at 4 degrees above the clear point; (2) an electrooptical display (III) containing at least one control element (II) and; (3) an electrooptical display system (IV) comprising at least one display (III).</p> |
申请公布号 |
EP1560895(B1) |
申请公布日期 |
2006.07.05 |
申请号 |
EP20030779850 |
申请日期 |
2003.11.05 |
申请人 |
MERCK PATENT GMBH |
发明人 |
HECKMEIER, MICHAEL;CZANTA, MARKUS;GOETZ, ACHIM |
分类号 |
C09K19/46 |
主分类号 |
C09K19/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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