摘要:
An optical recording medium contains, on a base, one or more dyes and a polymer which forms liquid-crystalline phases.The information is written into the uniformly oriented liquid-crystalline polymer layer, for example by means of a laser. During this procedure, the polymer heats up locally to above a phase transition temperature. By cooling, the resulting change is frozen in the glass state.The information can be erased by applying an electric field and/or heating.The recording material permits high-contrast storage and possesses high sensitivity, good resolution and excellent stability.
摘要:
An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including pretilt angle α0, orientation angle β0, etc. of the liquid crystal molecules in the layer.
摘要:
An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including orientation angle .beta..sub.o and pretilt angle .alpha..sub.o of the liquid crystal molecules in the layer. For example, good results are achieved when 0.degree.
摘要:
An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including pretilt angle .alpha..sub.0, orientation angle .beta..sub.0, etc. of the liquid crystal molecules in the layer. Reflection mode devices are described.
摘要:
An electro-optical display device comprising a liquid crystal layer achieves switching using an electric field component which is predominantly parallel to the surface of the liquid crystal layer. Low dependence of image contrast on viewing angle is achieved by selection of parameters including orientation angle .beta..sub.o, and others, of the liquid crystal molecules in the layer.