公开(公告)号：WO1992019695A2

公开(公告)日：1992-11-12

申请号：PCT/US1992003504

申请日：1992-04-28

Applicant: KENT STATE UNIVERSITY

Inventor： KENT STATE UNIVERSITY ,  DOANE, William, J. ,  YANG, Deng-Ke ,  CHIEN, Liang-Chy

IPC: C09K19/56

CPC classification number: G02F1/13718 ,  C09K19/02 ,  C09K19/542 ,  C09K19/544 ,  C09K19/586 ,  G02F1/0131 ,  G02F2001/13345 ,  G02F2001/13347 ,  G02F2001/13775

Abstract: A new liquid crystalline light modulating cell and material are characterized by phase-separated polydomains of polymer networks dispersed in chiral nematic liquid crystal having positive dielectric anisotropy, the polymer being present in an amount less than 10 % by weight of the total weight of the material and, preferably, being cross-linked. The liquid crystal in the vicinity of the polydomains is less responsive to an applied field than surrounding regions of liquid crystal, whereby the new material exhibits different optical states in response to different field conditions. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the new material is optically clear in a field-OFF condition and light scattering in a filed-ON condition. In still another embodiment, the new material exhibits stability at zero field in both a colored, light reflecting state and a light scattering state, as well as being optically clear in the presence of a field.

Abstract translation: 新的液晶光调节电池和材料的特征在于分散在具有正介电各向异性的手性向列型液晶中的聚合物网络的相分离多畴，该聚合物的存在量小于材料总重量的10重量％ 并且优选地是交联的。 多晶畴附近的液晶比外围区域对液晶的应用场响应较小，由此新材料响应于不同的场条件而表现出不同的光学状态。 在一个实施例中，该材料是在场关断状态下的光散射并且在场接通条件下是光学透明的，而在另一个实施例中，新材料在场关闭状态下是光学透明的，并且在场中的光散射 条件。 在另一个实施方案中，新材料在彩色光反射状态和光散射状态下在零场中表现出稳定性，并且在场的存在下在光学上是透明的。

公开(公告)号：WO1993023496A1

公开(公告)日：1993-11-25

申请号：PCT/US1992009367

申请日：1992-10-30

Applicant: KENT STATE UNIVERSITY

Inventor： KENT STATE UNIVERSITY ,  DOANE, William, J. ,  YANG, Deng-ke ,  CHIEN, Liang-Chy

IPC: C09K19/52

CPC classification number: C09K19/02 ,  C09K19/542 ,  C09K19/544 ,  C09K19/586 ,  G02F1/0131 ,  G02F1/1334 ,  G02F1/13718 ,  G02F2001/13345 ,  G02F2001/13347 ,  G02F2001/13775

Abstract: A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal (16) having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains (15) in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.

Abstract translation: 新的液晶光调制元件和材料的特征在于液晶和聚合物的液晶光调制材料，液晶是具有正介电各向异性的手性向列液晶（16），并且包括有效形成焦点的量的手性材料 锥形和扭曲的平面纹理，聚合物在液晶单元中以相分离的畴（15）分布，其量在不存在场的情况下稳定焦锥和扭曲的平面纹理，并允许液晶改变纹理 应用领域。 在一个实施例中，该材料在场OFF状态下是光散射并且在场导通条件下是光学透明的，而在另一实施例中，该材料在场关闭状态下是光学透明的并且在场导通条件下的光散射 。 在另一个实施方案中，该材料在彩色光反射状态下的零场稳定性，在其间具有光散射状态和多个稳定的反射状态，以及在场的存在下光学清晰。