公开(公告)号：US06177216B1

公开(公告)日：2001-01-23

申请号：US09450233

申请日：1999-11-29

申请人： Dirk J. Broer ,  Grietje N. Mol ,  Frans Leenhouts

发明人： Dirk J. Broer ,  Grietje N. Mol ,  Frans Leenhouts

IPC分类号： G02B520

CPC分类号： G02F1/133516 ,  G02B5/3016 ,  G02F1/133553

摘要： The invention relates to a color filter layer of a cholesterically ordered material, in which the axis of the molecular helix is directed perpendicularly to said layer. According to the invention, the color filter layer comprises at least one dye which is able to absorb undesired colors caused by color shifts. A correct choice of the bandwidth of the primary colors of the color filter layer and the dyes significantly alleviates the problem of undesired color shift. The invention also relates to a liquid crystal color display device of the reflective type, which is provided with such a color filter layer.

摘要翻译： 本发明涉及一种胆甾醇排序材料的滤色器层，其中分子螺旋的轴线垂直于所述层。 根据本发明，滤色器层包括至少一种能够吸收由颜色偏移引起的不期望的颜色的染料。 滤色器层和染料的原色的带宽的正确选择显着地减轻了不期望的色彩偏移的问题。 本发明还涉及一种具有这种滤色器层的反射型液晶彩色显示装置。

公开(公告)号：US5883686A

公开(公告)日：1999-03-16

申请号：US576541

申请日：1995-12-21

申请人： Frans Leenhouts ,  Peter B.A. Wolfs

发明人： Frans Leenhouts ,  Peter B.A. Wolfs

IPC分类号： G02F1/136 ,  C09K19/02 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1365 ,  G02F1/1368

CPC分类号： G02F1/1365 ,  G02F1/1368

摘要： The invention provides active-matrix display devices with non-linear two-pole switching elements such as MIMs or three-pole switching elements such as TFTs having a smaller difference in charge current at a different image content by using a suitable. ##EQU1## This leads to less burn-in of the image to be displayed. Moreover, a satisfactory transmission characteristic is obtained at a higher value of .epsilon..sub..perp.. For TFTs it is then possible to use smaller auxiliary capacitances due to the higher values of (.epsilon..sub..perp.). The latter aspect may in turn be utilized to realise a larger aperture.

摘要翻译： 本发明提供了具有诸如MIM或三极开关元件的非线性双极开关元件的有源矩阵显示装置，例如通过使用合适的方式在不同图像含量下具有较小的充电电流差异的TFT。 这将导致要显示的图像的老化。 此外，在ε正交值的较高值处获得令人满意的传输特性。 对于TFT，由于（ε正交）的较高值，可以使用更小的辅助电容。 后一方面可以用于实现更大的孔径。

公开(公告)号：US5825444A

公开(公告)日：1998-10-20

申请号：US752364

申请日：1996-11-19

申请人： Dirk J. Broer ,  Johannes A. M. M. Van Haaren ,  Grietje N. Mol ,  Frans Leenhouts

发明人： Dirk J. Broer ,  Johannes A. M. M. Van Haaren ,  Grietje N. Mol ,  Frans Leenhouts

IPC分类号： G02F1/1335 ,  F21V9/14 ,  G02B5/30 ,  G02F1/13357 ,  G02F1/13

CPC分类号： G02F1/13362 ,  G02B5/3016 ,  G02F1/133536 ,  G02F2001/133543

摘要： The Application relates to an illumination system comprising a fluorescent lamp and a broadband, cholesteric polarizer. Such a polarizer contains a layer of a polymeric material having a cholesteric order, which material is ordered in such a way that the axis of the molecular helix extends at right angles to the layer. The broadband character of the polarizer is obtained by causing the pitch of the molecular helix to increase from a minimum value at a first surface of the cholesteric layer to a maximum value at the second surface of the layer. In accordance with the invention, the polarizer should be positioned in the illumination system in such a manner that the cholesteric layer is directed towards the fluorescent lamp with its first surface. In addition, the value of the product p.sub.max.n.sub.e of the maximum value of the pitch in the cholesteric layer p.sub.max and of the extraordinary refractive index n.sub.e must range between 0.61 micron and 0.76 micron. By virtue of these measures, the illumination system has a surprisingly low viewing-angle dependence of the lightness and the color. The Application further relates to a linear polarizer for use in this illumination system as well as to a display device which comprises such a linear polarizer.

摘要翻译： 本申请涉及一种包括荧光灯和宽带胆甾型偏振器的照明系统。 这种偏振器包含具有胆甾醇阶的聚合材料层，该层以这样一种方式排列，使得分子螺旋的轴线与层成直角延伸。 通过使分子螺旋的间距从胆甾醇层的第一表面处的最小值增加到层的第二表面处的最大值来获得偏振器的宽带特征。 根据本发明，偏振器应该被定位在照明系统中，使得胆甾醇层以其第一表面指向荧光灯。 此外，胆甾醇层pmax和非常折射率ne的间距的最大值​​的乘积pmax.ne的值必须在0.61微米至0.76微米之间。 凭借这些措施，照明系统对亮度和颜色具有惊人的低视角依赖性。 该应用还涉及用于该照明系统的线性偏振器以及包括这种线性偏振器的显示装置。

公开(公告)号：US5798808A

公开(公告)日：1998-08-25

申请号：US791087

申请日：1997-01-29

申请人： Johannes A. M. M. Van Haaren ,  Dirk J. Broer ,  Frans Leenhouts

发明人： Johannes A. M. M. Van Haaren ,  Dirk J. Broer ,  Frans Leenhouts

IPC分类号： G02F1/1335 ,  G02F1/13363 ,  G02F1/13

CPC分类号： G02F1/133636

摘要： In a liquid crystal display device the number of grey levels is increased by means of a compensation foil comprising a layer having a cholesteric ordering with a helix pattern, in which the pitch of the helix is smaller than (0.26-0.31..DELTA.n) .mu.m, in which .DELTA.n is the optical anisotropy of the anisotropic layer. Moreover, the viewing angle dependence will be more symmetrical by patterning the cholesteric ordering.

摘要翻译： 在液晶显示装置中，通过补偿箔增加灰度级数，该补偿箔包括具有螺旋图案的胆甾醇排序的层，其中螺旋的间距小于（0.26-0.31，ΔTA）n m，其中DELTA n是各向异性层的光学各向异性。 此外，通过图案化胆甾醇排序，视角依赖性将更对称。

公开(公告)号：US5004324A

公开(公告)日：1991-04-02

申请号：US465593

申请日：1990-01-18

申请人： Frans Leenhouts ,  Martin Schadt

发明人： Frans Leenhouts ,  Martin Schadt

IPC分类号： G02F1/133 ,  G02F1/137 ,  G02F1/139 ,  G09F9/30

CPC分类号： G02F1/1397

摘要： A liquid crystal display (LCD) cell comprising a highly twisted nematic liquid crystal disposed between two electrode plates and polarizers and having a positive dielectric anisotropy. The optical path difference .DELTA.n.d is 0.2 to 0.7 .mu.m and the ratio d/p of thickness to pitch is 0.2 to 0.6. The absolute value of the twist angle .phi. can be between 120.degree. and 260.degree. for a right-hand twist or left-hand twist, the angle .psi. between the polarizers can be between 0.degree. and 180.degree. and the angle .beta. between the surface orientation direction and the polarization direction on the screen on the light incidence side can be between 0.degree. and 360.degree..

摘要翻译： 一种液晶显示器（LCD）单元，包括设置在两个电极板和偏振器之间并具有正介电各向异性的高扭曲向列型液晶。 光程差DELTA n.d为0.2〜0.7μm，厚度对间距的比d / p为0.2〜0.6。 扭转角度phi的绝对值对于右旋扭转或左旋扭转可以在120°和260°之间，偏振器之间的角度psi可以在0°和180°之间，并且表面取向之间的角度β 光入射侧的屏幕上的偏振方向可以在0°和360°之间。