TV knowledge

1. The plasma state is the fourth form of existence of matter that is different from solids, liquids and gases! Plasma TV imaging principle: a device that injects mixed gas between two ultra-thin glass plates and applies voltage to use phosphors to emit light. The mixed gas is filled between the thin glass plates, and a voltage is applied to generate ion gas, and then the plasma gas is discharged to react with the phosphor in the substrate to produce a color image (not affected by magnetic and magnetic fields).

2, liquid crystal, namely liquid crystal. A dye-doped nematic liquid crystal is sandwiched between two transparent conductive glasses. When a few volts are applied to both sides of the liquid crystal layer, the liquid crystal layer changes from red to a transparent state (different effects, different imaging). The imaging principle of liquid crystal relies on the structural rearrangement of the internal molecules.

3. Digital TV means using binary discrete digital signals, which is different from traditional continuous "analog signals". The digital signal has high recognition and low power consumption, and gradually replaced the analog signal