The basics of LCD and working principle of the liquid crystal TFT Display Modules

We first general understanding of the liquid crystal molecules, and then carefully study the electrical characteristics of LCD and optical characteristics: to talk about the dielectric anisotropy; talk about the LCD response of the electric field; After the the birefringent optical characteristics of the liquid crystal molecules; then polarized mirror, and finally the three most commercial value of operating modes: Twisted Nematic, IPS, MVA.QVGA lcd display
There are a variety of liquid crystal molecules, this is one of them. Generally speaking, a mixture composed by a variety of liquid crystal molecules in a liquid crystal panel, provides many additional features, but are essentially a the hard head and flexibility tail of long cylindrical molecule. Its hard head at room temperature, a crystalline state, but due to the flexibility of the tail swing at room temperature to prevent the liquid crystal molecules condense into a solid. This structure gives it different melting characteristics, it is between between the crystal and the liquid state.
There are many types of liquid crystal, several here is the most important, smectic, cholesteric and nematic type. We will mainly concentrate on the nematic liquid crystal, that is, the right side of this. So far it is used in display technology is the most important raw materials, including twisted nematic, IPS and MVA mode.
Ordering: a nematic liquid crystal of the liquid crystal molecules of the elliptic cylindrical shape. It can be translated in any direction, it can be as shown in the x axis direction forward or backward, lateral movement, including the paper above the upward and downward and inward and outward directions. It can even be rotated in the longitudinal direction. The y-axis and z-axis directions in the figure, it can not free swing and rotation. It is limited by its neighboring molecules. All molecules surrounding are arranged along it, it will hit the neighbor when it tries to swing in the y and z directions, so restricted.
This is the basic model, you can see these are the characteristics of the liquid.OLED Display