In industrial intelligent manufacturing, the use of industrial displays is relatively common. In a special industrial environment, what kind of industrial displays can operate stably? How does the wide temperature industrial display achieve this requirement? What are the specific characteristics? We together look.
The common method of wide-temperature industrial displays is to use low-temperature heating, but this heating method sometimes causes liquid crystal outflow or difficulty in restoration during the Ajiu process, and there are other researches on heating at a single key point. In general, there are two ways of point-by-point heating and whole-surface heating. The overall power consumption of such a display will increase 4-6 times. For example, the power consumption of a 15-inch liquid crystal display at room temperature (22°C) is 20ww, and the power consumption in a low temperature environment (-40°C) is 90-120w. This method is heating.
There is another way to achieve wide temperature: increase the brightness of the LCD screen. Increase the backlight tube, through the development of a special high-voltage strip (can generate 2000v-3000v start voltage) in a low temperature environment (-40 ℃) to light up the backlight tube, the huge heat generated by the backlight tube makes the liquid crystal heat up, this This method achieves two results with one stone, that is, it solves the problem of low temperature working of liquid crystals and solves the problem of visibility in the sun. This method is referred to as the brightening method.
The methods of heating and brightening have been researched and applied, and it is believed that these two methods have many hidden quality problems: ① Both of these two methods add many accessories and reduce the reliability. ②It is more troublesome to assemble and produce, it is easy to cause defective products, and the defective product rate is high. ③The device's ability to resist shock and vibration is reduced. ④In the aging test, it is found that the aging speed is extremely fast under the environment of 50℃, and the acceleration rises, especially the brightening method, the life is only 1/10 of the normal.
In order to solve such problems, a series of product innovation and technological research and development have been carried out. A set of world-leading LCD high and low temperature application technology has been developed to completely solve the above problems. The new product can work normally at low temperatures without heating or brightening. The basic principle is as follows: the liquid crystal does not freeze or change its state at low temperature (-40°C), otherwise neither the heating method nor the brightening method can work, so we thought of using software to correct the drift of its electrical characteristics. . Try to trigger the work of the liquid crystal at low temperatures. This requires adjusting the driving timing of the liquid crystal and so on. Through a large number of experimental studies and extensive applications, this technology has been very mature. No matter how the ambient temperature changes, the normal operation of the liquid crystal can be ensured by widening the trigger sequence and matching the corresponding drive.
Because the technology of industrial display has been the world leader, product sales have doubled every year.
The application of industrial displays in industry has become more common, and the technology has matured. With the continuous development of science and technology, the subsequent research level will only become more exquisite, not only in industry, but in business, more and more industries will use industrial displays. .
