液晶是液态晶体的简称,它是一种新型的有机化学材料。液晶是在融点以下的温度范围内,具有液体和固体两种性质的物质,即在机械性能方面具有液体的特性,在光学性能方面具有晶体的特性,这也是被称为液晶的原因。液晶的发展虽早在十九世纪八十年代,至今有八十多年的历史,但得到应用还是一九六○年前后开始的。液晶通常被用来指示温度和显示。 LCD is the abbreviation of liquid crystal, it is a new type of organic chemical materials. Liquid crystals are substances that have both liquid and solid properties within a temperature range below the melting point, that is, have liquid properties in terms of mechanical properties and crystalline properties in terms of optical properties, which are also referred to as liquid crystals. Although the development of liquid crystal as early as the 1880s, it has more than eighty years of history, but the application was started around 1960. Liquid crystal is often used to indicate temperature and display.