Patent of surface light source

First, the subject is different.

1, TFT screen: thin film field effect transistor, which belongs to one of the active matrix liquid crystal displays.

2.LED backlight: It is a flat panel display, which consists of a small LED module panel.

3.IPS screen: It is a technology based on TFT, and its essence is TFT screen.

Second, the characteristics are different.

1, TFT screen: You can "actively" control each independent pixel on the screen, which can greatly improve the reaction time.

2.LED backlight: It has the advantages of bright colors, wide dynamic range, high brightness, long service life, stable and reliable work.

3.IPS screen: The two poles are on the same plane, unlike other LCD electrodes which are arranged vertically.

Third, the technology is different.

1, TFT screen: It belongs to active matrix liquid crystal display. Technically, it is driven by "active matrix". The method is to use the transistor electrode made of thin film technology to "actively pull" any display point by scanning.

2.LED backlight: an electronic display screen composed of LED dot matrix, which changes the display content forms of words, animations, pictures, videos, etc. in time through the opening and closing of traffic light beads, and controls the display of components through modular structure.

3.IPS screen: The liquid crystal molecules are arranged in a horizontal way. When exposed to external pressure, the molecular structure sinks slightly, but the whole molecule is still horizontal.

Baidu encyclopedia -TFT screen

Baidu encyclopedia -led display screen

Baidu encyclopedia -IPS screen