液晶原理及其光电特性（Liquid crystal principle and its photoelectric characteristics）.docVIP

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液晶原理及其光电特性（Liquid crystal principle and its photoelectric characteristics）.doc

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液晶原理及其光电特性（Liquid crystal principle and its photoelectric characteristics）

液晶原理及其光电特性（Liquid crystal principle and its photoelectric characteristics） Liquid crystal principle and its photoelectric characteristics Liquid crystal display refers to all made out of the use of liquid crystal display and liquid crystal display. Today of this name, mostly refers to the use of the notebook computer, or desktop computer applications. The display is a thin film transistor liquid crystal display. English transistor liquid crystal name Thin-film display, referred to as TFT LCD. from the English name in the us we can know that the display device has two main features, a thin film transistor, the other is the LCD itself. We first talk about the LCD itself. Classification of liquid crystals (liquid, crystal, LC) We generally think that substances like water has three states, which are solid and liquid with gas. In fact, the three state of matter is for water, for different substances, there may be other different states. We want to talk about the state of liquid crystal, is a state between solid with a liquid between. In fact, this is only a process of material phase change, as long as the material with the above process, namely in solid and liquid between the state and the physicist called liquid crystal. For the first time found that the liquid crystal, dating back more than more than 100 years. In the year 1888, was found by Austria botanist Friedrich Reinitzer, he observed in separation of benzoic acid cholesterol refined from plants (cholesteryl benzoate) found that the melting behavior, this compound is heated to 145.5 DEG C, the solids will be melting, showing a between the solid and liquid phases of semi molten flow like liquid. In this situation will always maintain the temperature to 178.5 DEG C, before the formation of clear isotropic liquid (isotropic liquid).1889, the research of phase transfer and thermodynamic equilibrium of the German physicist O.Lehmann, this compound to do more detailed analysis. He found under microscope this semi visc