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Principles of monochrome LCD display
2011-09-13 by seoer

I2C LCD display technology is poured into two columns with thin LCD flat groove between. The two slots on the plane perpendicular to each other (intersection of 90 degrees). In other words, if a north-south plane molecular arrangement, the other east-west plane molecular arrangement, which is located between two planar molecules are forced into a 90-degree turn of the state. As the molecules are arranged along the direction of light propagation, so when the light is reversed through the LCD 90. When a voltage on the LCD, the liquid crystal molecules will rotate, changing the light transmittance, in order to achieve multi-grayscale display. LCD is dependent on the polarization filter (slice) and the light itself. Natural light in all directions is random divergence. Polarization filter is actually a series of increasingly fine parallel lines. These lines form a network, these lines are not parallel to block all light. Polarization filter line coincided with the first vertical, they are able to completely block the light that has been polarized. Only two completely parallel to the line filter, or the light itself reversed to the second polarization filter to match the light was able to penetrate. LCD is the way the two perpendicular polarization filter form, so under normal circumstances should block all attempts to penetrate the light. However, the filter between the two liquid crystal full of twist, so in the light piercing the first filter, it will be liquid crystal molecules turn 90 degrees, and finally the second filter from the piercing. From the liquid crystal display structure, whether a laptop or desktop, using the LCD display are from different parts of the hierarchy. LCD consists of two glass composition, thickness specifications are 0.7mm, 0.63mm, 0.5mm (can be thinned by physical or chemical means to achieve thinner), during which the liquid crystal containing (LC) material of the 3 ~ 5μm uniform interval separated. Because the liquid crystal material itself is not light, so they need extra light to the display configuration, the LCD screen on the back of a light guide plate (or even light board) and the reflective film, light guide's primary role is the linear light source or point source into perpendicular to the plane of the surface light show. The light emitted by the backlight through the first polarizing filter layer after layer into the liquid crystal layer. Crystal droplets in the liquid crystal layer are included in the small cell structure, one or more cells form one pixel on the screen. Between the glass and the liquid crystal material is transparent electrodes is divided into rows and columns, row and column intersection, by changing the voltage changes the optical state of liquid crystal, liquid crystal material acts like a small light valve. In the liquid crystal material is a control circuit part and the peripheral drive circuit section. When the LCD field generated in the electrode, the liquid crystal molecules will produce distortion, which will be there through one of the rules of the refraction of light, and then through the second filter layer of the filter layer on the screen display.

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