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Liquid crystal display

- Dec 20, 2017 -

A liquid crystal display, a flat, ultra-thin display device, consisting of a certain amount of color or black and white pixels, placed in front of a light source or a reflector. Liquid crystal displays are very low power and are therefore favored by engineers and are suitable for electronic devices using batteries. Its main principle is to use the current to stimulate the liquid crystal molecules to produce points, lines and surfaces to form a picture with the back lamp tube. The working principle of liquid crystal display: LCD is a kind of special material between liquid and solid, it is a kind of organic compound, normal liquid, but it is the molecular arrangement and solid crystals is very regular, so called liquid crystal, another is its special nature, if an electric field is applied to the liquid crystal that will change its molecular arrangement, then if it is combined with a polarizing plate, it has the function of preventing light (in an electric field is applied, the light can pass through), if coupled with the color filter, liquid crystal to change voltage, can change the number of a certain color light transmittance, can also image it can change the liquid crystal transmittance change voltage at both ends (but in reality, this must be polarizing plate with).