What is the impact of high working temperature on the LCD strip screen? (7/LCD bar screen)

What is the impact of high working temperature on the LCD panel? Let’s find them as below:

1. Too high temperature will cause devastating damage to the LCD strip screen

（1）LCD?displays are usually packaged with silicone. If the working temperature exceeds the solid phase transition temperature (typically 125?°C), the packaging material will become a rubber state and rapidly heat and expand, resulting in an open circuit and failure of the LCD?bar?screen.

（2）If the operating temperature of the LCD screen exceeds the maximum load-bearing temperature of the chip, its luminous rate will drop rapidly, resulting in light attenuation. The life of an LCD screen?is reflected by the attenuation of light, that is?to say, the brightness of the LCD?screen will decrease over time.

?2. The reason why temperature affects the luminous rate of the LCD bar screen:

（1）As the temperature increases, the concentration of electrons and holes increases, the band gap decreases, and the electron mobility decreases.

（2）High temperature will shift the blue peak of the chip to the long-wave direction, causing the chip's wavelength to not match the phosphor's wavelength, thereby reducing the light extraction efficiency outside the liquid crystal display.

（3）As the temperature increases, the quantum efficiency of the phosphor decreases, the luminescence decreases, and the light extraction of the liquid crystal display decreases, resulting in a decrease in the brightness of the liquid crystal display.

?（4）The shape of silicone products is greatly affected by temperature. As the temperature increases, the internal heat of the silica gel increases and the refractive index decreases, resulting in an increase in the light efficiency of the liquid crystal display.

?In summary, it can be concluded that a reasonable temperature is a key to the LCD panel, and users need to follow the instructions to ensure the normal use of the LCD strip screen.