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138 条记录 (耗时 0.033 秒)

    Liquid-crystal medium having a low threshold voltage
    34.
    发明授权
    Liquid-crystal medium having a low threshold voltage 有权

    公开(公告)号：US07033651B2

    公开(公告)日：2006-04-25

    申请号：US10257635

    申请日：2001-04-17

    申请人： Michael Heckmeier ,  Detlef Pauluth

    发明人： Michael Heckmeier ,  Detlef Pauluth

    IPC分类号： C09K19/30 ,  C09K19/34 ,  C09K19/12 ,  C09K19/20

    CPC分类号： C09K19/3001 ,  C09K19/44 ,  Y10T428/10

    摘要： The invention relates to a liquid-crystalline medium comprising a mixture of at least two compounds of the general formula (I) R1-Am-Bn-Z1-C-Z2-D-R2  (I) in which R1 is H, an alkyl or alkenyl radical having 1 to 15 carbon atoms and 2 to 15 carbon atoms, respectively, which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where one or more CH2 groups in these radicals may also, in each case independently of one another, be replaced by —O—, —S—,  —CO—, —CO—O—, —O—CO— or —O—CO—O— in such a way that O atoms are not linked directly to one another; A, B, C and D are each, independently of one another, in which Y, Y1, Y2, Y3, Y4, Y5 and Y6 are each, independently of one another, H or F; C is, in addition to the abovementioned meanings, Z1 and Z2 are each, independently of one another, a single bond, —CH2O—, —OCH2—, —CH2—CH2—, —CH═CH—, —C≡C—, —CF2—CF2—, 13 CF2O—, —OCF2— or —CO—O—; R2 is, in addition to the abovementioned meanings of R1, F, CF3, OCF3, OCHF2, OCH2CF2H; and m and n are each, independently of one another, 0 or 1, with the proviso that Z1 is a single bond when m and n are 0, characterized in that the mixture comprises a) from 30 to 90% by weight of compounds of the general formula (I) having Δ∈≧9(=highly polar compounds); b) from 0 to 30% by weight of compounds of the general formula (I) having 1≦Δ∈≦9(=polar compounds); c) from 10 to 40% by weight of compounds of the general formula (I) having −1≦Δ∈≦1(=neutral compounds); the sum of a), b) and c) being 100% by weight.

    Electro-optic light control element, display and medium
    39.
    发明授权
    Electro-optic light control element, display and medium 有权
    电光控制元件，显示屏和介质

    公开(公告)号：US07701628B2

    公开(公告)日：2010-04-20

    申请号：US10477609

    申请日：2002-04-18

    申请人： Michael Heckmeier ,  Achim Götz

    发明人： Michael Heckmeier ,  Achim Götz

    IPC分类号： G02F1/00 ,  G02F1/1335 ,  C09K19/02

    CPC分类号： C09K19/44 ,  C09K19/46 ,  G02F1/07 ,  G02F1/134363 ,  G02F1/1393 ,  Y10T428/10

    摘要： The invention relates to an electro-optic light control element, electro-optic displays containing said elements and display systems such as TV screens and computer monitors. The inventive light control elements contain a mesogenic control medium which is present in the isotropic phase during operation of the light control elements and arc characterized both by good contrast and low angular field dependence and particularly by very short switching, times. The invention also relates to the mesogenic control media used in the electro-optic light control elements.

    摘要翻译： 本发明涉及电光控制元件，包含所述元件的电光显示器和诸如TV屏幕和计算机监视器的显示系统。 本发明的光控制元件包含在光控元件操作期间存在于各向同性相中的介晶控制介质，其特征在于良好的对比度和低角度场依赖性，特别是通过非常短的切换时间。 本发明还涉及用于电光控制元件的介晶控制介质。