Laboratory Equipment Technical Teaching Equipment TV Trainer

1. Product Overview

composition
Compared with CRT tube TVs, LCD TVs only have a composition principle, which is simple to connect. Generally speaking, there are 4 main functional modules: power supply board, main board, logic board, smart module, as well as screen line, paint, character and speaker output.

principle

As shown in the figure above, the red arrow is the power supply circuit, and the blue arrow is the signal circuit.

The power board is responsible for converting 220V AC voltage into the power supply voltage required for each work;
The TV motherboard processor outputs sound signals and responds to light-emitting signals; controls the power board switch, directly or indirectly controls the modules; receives video signals, and the images are converted into LVDS signals and sent to the logic board; the signals are sent to the speaker;
The main function of the logic board is to convert the LVDS signal output by the TV motherboard into a TCON signal that the LCD screen can handle;
It implies that the module points to the light bar.