At present, the large-size touch integrated machine mainly uses a liquid crystal display (LCD) or a plasma (PDP) display. The liquid crystal display, commonly known as the LCD, controls the liquid crystal through the circuit and produces a picture with the backlight. The plasma display is abbreviated as plasma, which discharges an inert gas by high-voltage electricity to generate light.
For users, the best of both worlds has always been the most concerned issue.
Because of the different principles of illumination, the contrast, brightness, and color saturation of the plasma screen are slightly higher than the LCD. However, the plasma screen has a larger pixel point, and the display effect will have a stronger graininess; while the LCD does not have a similar problem.
One of the important factors that determine the popularity of the two on the touch-enabled machine is power consumption. Usually, the power consumption of the plasma screen is more than three times that of the LCD. A 65-inch LED backlight LCD has an average power consumption of 220W-240W, while a 63-inch plasma screen of similar size has an average power consumption of 700W. Because the power consumption is too high, in actual use, the plasma screen generates a serious heat, and the user feels a strong burning sensation when operating at a close distance. Because of high power consumption and high heat generation, plasma screen radiation is much higher than LCD.
From the perspective of product life, the life of LCD can generally reach 50,000 hours or more, equivalent to about 10 years. Plasma screen life is relatively short, and screen brightness is attenuated over time.
The plasma screen will exhibit "altitude sickness" at high altitudes. In view of the display principle of PDP, the plasma chamber inside the glass substrate is filled with inert gas. As the altitude increases, the external pressure decreases, and the internal pressure increases relatively, especially at the time of starting, the internal inert gas temperature rises and the molecule The intense exercise will cause the pressure to rise further, which will affect its use. Therefore, Panasonic and other well-known plasma screen manufacturers will clearly remind users that the plasma screen cannot be used above 2000 meters above sea level.
In addition, the long-term playback of the fixed screen on the plasma screen will cause the image sticking problem. Although the technology such as dynamic screen saver has compensated for this defect to a certain extent, it cannot be fundamentally overcome.
Because LCD has no radiation, low energy consumption, long service life, etc., in the application of touch integrated machine, the usage rate of LCD is much higher than that of plasma screen.
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