Due to the characteristics of LCD screen materials, there will be varying degrees of impact at high temperatures. Today, the manufacturer of Nuxin High brightness LCD screens will share with you the impact of high working temperature on LCD screens?
1、 Excessive working temperature can cause destructive damage to the LCD screen.
1. LCD displays are mostly packaged with silicone. If the working temperature exceeds the solid-phase transition temperature, the packaging material will turn into a rubber state and rapidly accelerate thermal expansion, leading to circuit breakers and LCD screen failure.
If the working temperature of the LCD screen exceeds the maximum carrying temperature of the chip, its luminous rate will rapidly decrease, leading to light attenuation. The lifespan of an LCD screen is reflected by the attenuation of light, which means that the brightness of the LCD screen will decrease over time.
2、 Temperature affects the luminous efficiency of LCD screens
As the temperature increases, the concentration of electrons and holes increases, the bandgap width decreases, and the electron mobility decreases.
As the temperature increases, the quantum efficiency of the fluorescent powder decreases, the luminescence decreases, and the light extraction of the liquid crystal screen decreases, resulting in a decrease in the brightness of the liquid crystal.
3. High temperature will cause the blue light peak of the chip to shift towards the long wavelength direction, causing the wavelength of the chip to not match the wavelength of the fluorescent powder, thereby reducing the external light extraction efficiency of the LCD display.
The shape of silicone products is greatly affected by temperature. As the temperature increases, the internal heat of silicone increases, the refractive index decreases, and the LCD light efficiency improves.
Shenzhen Ruxin Electronics Co., Ltd. was established in 2009 and is a professional LCD display screen manufacturer. We provide customized products for strip LCD screens, high brightness LCD screens, industrial control screens, small-sized LCD screens, and strip advertising machines. The main products include LCD long strip screens, outdoor high brightness screens, high brightness strip screens, shelf strip screens, bus strip screens, subway guide screens, in car LCD screens, advertising machine digital signs, etc.