What problems will arise when the LED display is working under high temperature conditions?

LED displays are now widely used. In order to use the display screen to a large extent, the application company should have basic common sense on the maintenance of LED display screens. Whether it is an indoor LED display or an outdoor LED display, the display will generate heat during operation, which will cause the temperature of the LED display to rise.

However, running in a high temperature environment will cause some damage to the LED display, the following is a detailed introduction. Under normal circumstances, due to the low brightness of indoor LEDs, the display screen generates less heat and can dissipate heat naturally. However, outdoors, due to the high brightness of the LED, the display generates a lot of heat, which needs to be dissipated by an air conditioner or an axial fan.

LED display is an electronic product, so temperature rise will affect the light attenuation of LED display lamp beads, the working efficiency of driver IC and the service life of LED. The working temperature of the LED display exceeds the load temperature of the chip, which will rapidly reduce the luminous efficiency of the LED display, causing obvious light attenuation and damage; if the junction temperature exceeds the solid phase transition temperature (usually 125) ° C), then the packaging material It will become rubbery, and the coefficient of thermal expansion will rise sharply, which will cause the LED display to malfunction. High temperature will affect the light attenuation of the display LED screen.

The life of the LED display is reflected by its light attenuation, that is, as time goes by, the brightness will become lower and lower until it goes out. The life of an LED display is usually defined as the time when the luminous flux decays by 30. The main source of light attenuation of LED display is high temperature, which shortens the service life of LED display.

The light attenuation of different LED displays is different, usually LED display manufacturers will provide a set of standard light attenuation curves. The light decay curve is caused by high temperature. The light attenuation curve caused by high temperature, the luminous flux attenuation of the LED display cannot be recovered.

The unrecoverable luminous flux before the LED light decays is called the "initial luminous flux" of the LED display. Therefore, the temperature rise will affect the service life of the temperature LED display. .