The LCD TV uses the technology of liquid crystal display. It either has a passive matrix or an active matrix screen display network. The active matrix is also called thin film transistor. The passive matrix consists of a network of conductors that have pixels situated at the intersecting points of the network. A current passes through the two conductors of the network in order to control the luminance at each pixel.

The active matrix consists of transistor situated at each intersecting point of the pixel, needing a small amount of current to control the light at each pixel. Due to this, it is possible for the current in the active matrix display to be turned on and off more often. This improves the rate of refreshment. Many times the passive matrix have the dual scanning system of the network with the same amount of current. But active matrix in LCD is a better technology.


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