Liquid crystal display structures

In a liquid-crystal display (LCD) device, the two electrodes are parallel and separated by a thin layer of liquid crystal (see Figure 2.2). The liquid crystals in this layer naturally adopt a helical structure. 

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PFMB can be used to prepare aromatic polyimides that display solubility in ketone, ether, and polar aprotic solvents. This unusual solubility can be utilized in die facile preparation of thin films that display anisotropy in their structures and properties. The anisotropy in the optical properties of the films makes them promising candidates for use as compensation layers in liquid-crystal displays. Their low dielectric constants and CTEs in combination with their outstanding thennal and thermooxidative stabilities make diem candidates for dielectric layers in microelectronics applications. 

Humans use liquid crystals in a variety of ways. The LCD in popular LCD monitors stands for liquid crystal display. Each dot of color in these displays is light passing through a thin layer of liquid crystals. When electricity passes through the layer, the liquid crystal structure is turned and twisted to reflect different colors of light. LCD monitors are particularly popular because they take low amounts of energy to operate. 

A PLZT reflective display is similar in appearance to the common liquid crystal display (LCD). The structure of the device is shown schematically in Fig. 8.16 a suitable PLZT composition is the slim-loop quadratic 9.5/65/35. 

Organic materials are used in the existing electronics industries mainly for passive purposes insulating and structural support materials. There are, however, exceptions, such as photoresists, liquid crystal displays, and electrocopying. More challenging to many researchers in a diversity of fields is the application of organic conductors from the viewpoint of the fabrication of molecular electronics, to which this chapter is devoted. 

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