What is the LED backlight of an LCD TV?
The backlight of the LED LCD screen has multiple sets of LED lights. The backlight is divided into two illumination modes, and the structure is slightly different: one is the back-through direct type, the light source is directly installed on the back of the LCD panel, and the LED light directly illuminates the LCD panel. This method often has 4 groups, 6 groups or more. Group of LED lights. The second is the side-through type, the light source is installed on the side of the thick light guide plate, this method often has 1 or 2 groups of LED lights. The performance and parameters of several groups of LED lights on the same screen are the same. Each group of LED lights is composed of multiple LED lamp beads, and each LED unit is assembled on a metal strip using a pressure welding process. Each group is composed of multiple LED lamp beads in series. How to distinguish whether the LED lamp beads on an LED strip are all connected in series or segmented in series? One is to look at the p