LCD liquid crystal display technology has gradually begun to be applied in the field of vehicle display. However, because the liquid crystal display technology is subject to the influence of ambient temperature, the application field of vehicle display products is limited. The liquid crystal material used to make the liquid crystal display will become liquid when the ambient temperature is too high, and it will become crystal when the temperature is too low. No matter which state it becomes, the liquid crystal material no longer has the photoelectric effect that can be controlled by the electric field. As a result, the liquid crystal display cannot work normally. In addition, the contrast, viewing angle, and response speed of the liquid crystal display also change with temperature changes. Therefore, the liquid crystal is not a good display method for vehicle displays with large changes in the environment.
Compared with mature TFT-LCD, OLED (Organic Electroluminescence Display Technology) is an active luminous display with high contrast, wide viewing angle (up to 170?), fast response (~1μs), high luminous efficiency, and low operating voltage (3~10V), ultra-light and thin (thickness less than 2mm) and other advantages. Car displays made with OLED technology can have a thinner and more attractive appearance, better color display quality, wider viewing range and greater design flexibility. More importantly, OLED environmental adaptability is much better than The liquid crystal display can withstand the temperature range of -40~85℃. And OLED does not contain lead, which will not cause pollution to the environment. Therefore, OLED display applications have great advantages in the automotive field.
DisplaySearch's research report shows that among the various applications of OLED panels, the car audio application market in 2005 accounted for 3[%] of the total shipments, with an output value of 11[%], occupying a major share of the high-end application market. In fact, Ford’s Aston Martin DB9, Grand Cherokee Jeep and Chevrolet Corvette have adopted monochrome OLED small molecule passive matrix displays, which can work for 30,000 hours before the brightness drops to 80[%] of the original brightness.
ABI Research, a market research company, believes that OLED displays have brought huge advantages to automakers. They can quickly install car dashboard lighting systems without having to perforate wiring in the car as in the past, and OLED technology can provide high-end luxury Cars bring perfection, and for luxury car manufacturers and dealers, this means significant savings and will make consumers more satisfied. The lifespan of OLEDs has been greatly improved, and the lifespan of 40,000 to 50,000 hours in a normal environment has been equivalent to that of TFT-LCDs. PiONeer of Japan is the first manufacturer to have OLED products on the market. As early as 1997, monochromatic OLED was applied to car audio. In 2004, it launched the full-color series of OLED audio for the first time. The automotive display OLED products launched by other companies have a working temperature range of -40~85℃, and the lifespan of monochrome products has reached 55,000 hours (70nit) and 50,000 hours (80nit). The working temperature of automotive chips is still being further improved. .