The meaning of wide-temperature LCD screens
A wide-temperature LCD screen refers to an LCD screen that can work normally within a wide temperature range. Compared with standard LCD screens, wide-temperature LCD screens are optimized in design and materials to adapt to more extreme temperature conditions. Generally speaking, wide-temperature LCD screens can work normally in a temperature range of -20°C to 70°C, and some specially designed wide-temperature LCD screens can even start at lower temperatures or maintain stable operation at higher temperatures.
So what problems will occur when the LCD screen exceeds the operating temperature range?
First, let's take a look at the working principle of the LCD screen. The main material of the LCD screen is liquid crystal molecules. Liquid crystal materials are filled between two parallel substrates. The direction and arrangement of liquid crystal molecules are changed by voltage to achieve the effect of shading and light transmission to display the depth of the picture. Then, a filter layer of RGB primary colors is added between the two substrates. Finally, the final color dynamic picture can be displayed by lighting the backlight. Liquid crystal molecules will definitely be affected by the ambient temperature. When the temperature is too high, the liquid crystal molecules will also heat up, rotate faster, and the color on the screen will become darker. When the temperature is extremely low, the liquid crystal molecules will crystallize, rotate slower, the display color will become lighter, and the dynamic image will also become slower. At the same time, high and low temperature environments will also affect the normal operation of the backlight. Therefore, when the LCD screen exceeds its own operating temperature range, the display image will be distorted and the image cannot be displayed normally.
How does the wide temperature LCD screen work normally in the range of -30℃~+85℃?
First of all, the wide temperature LCD screen has optimized the liquid crystal material and adopted a more stable VA liquid crystal material, thereby improving the high temperature and low temperature resistance of the LCD screen. Conventional screens generally use TN liquid crystal materials. Secondly, in the main structure of the screen, the wide temperature LCD screen uses a sturdy material that is resistant to high temperature and deformation, ensuring that the screen can display normally without deformation in any temperature environment. Finally, it is also necessary to work hard on the choice of backlight. The wide temperature LCD screen uses a warmer LED backlight, which has better high temperature and low temperature resistance. Compared with ordinary cold cathode fluorescent lamps, it can provide a continuous and stable backlight source for the screen in a wider operating temperature range.
Advantages of wide temperature LCD screen
1. Stability: Wide temperature LCD screen can maintain stable working performance in a large temperature range, reducing failures and maintenance costs caused by temperature changes.
2. Reliability: Wide temperature LCD screen is made of special materials and processes, which improves the durability and reliability of the display and extends the service life of the equipment.
3. Applicability: Wide temperature LCD screen is suitable for various industrial environments, including high temperature, low temperature, high humidity, dust and other harsh conditions, and has strong environmental adaptability.
4. Safety: In industrial applications, the safe operation of equipment is crucial. Wide temperature LCD screen can maintain clear display in various environments, which helps operators to accurately read data and alarm information and ensure production safety.
Today's LCD screens have been applied to various fields, and different working fields have brought different application environments. Therefore, the working temperature of LCD screens has become an important technical parameter, and many customers will have customized requirements for the working temperature of the screen. Zhongyou Technology has more than ten years of experience in LCD screens, and has very mature and successful experience in customizing modules. Please contact us for any LCD touch screen project.
