LCD electronic tablet principle

With the development of science and technology, people's lifestyles are changing, and the way we write is changing quietly. Intelligent LCD electronic tablet products have been listed, the tablet manufacturers continue to promote the vast number of consumers on the LCD electronic writing board material, performance, use have a general understanding. Today we take a comprehensive analysis of the working principle of LCD electronic writing board. After reading you will think, in fact, is not mysterious.

In the liquid crystal electronic tablet interior LCD screen, according to the arrangement of molecules, liquid crystal can be divided into nematic, smectic, cholesteric three categories, including cholesteric liquid crystal was flat, arranged in layers, layers The inner molecules are parallel to each other, the long axis of the molecule is parallel to the plane of the layer, and the directions of the long axis of the molecules in the different layers are slightly changed. The normal directions along the layer are arranged in a spiral structure. Cholesteric liquid crystal thread distance of 300nm, and visible wavelengths of the same order of magnitude, the helical pitch will vary with the external temperature, the electric field conditions, the distortion of the liquid crystal change, because the adjustment spiral can be used to modulate the external light.

Is based on the above characteristics of liquid crystal molecular materials, handwriting board manufacturers have developed a liquid crystal electronic writing board and optical blackboard, hoping to be a technology of writing instead of the traditional blackboard, paper ink pen writing.