Toshiba Panasonic MITSUBISHI with LED backlight panel (Figure)

Toshiba Matsushita display 8 inch panel module technology exhibition Toshiba Matsushita display technology and MITSUBISHI motor, in "the first exhibition display (Display; 2005)", were exhibited at the back light source using white light emitting diode (LED) LCD panel module. High power white LED with output power of nearly 1W. White LED blue LED chip with yellow fluorescent material. The back light source and the use of red, green and blue color performance than LED, but slightly inferior, the use of white LED can improve the luminous efficiency, so it can increase the brightness of the screen, and use the RGB color compared to 3 LED, but also can reduce the packaging area.

Toshiba Matsushita Display Technology Exhibition for vehicle equipment 8 inch panel module. The company said that the biggest advantage of the panel is different from the cold cathode fluorescent tube (CCFL), did not use mercury (Hg). When the input voltage is 7W, the brightness of the screen is about 600cd/m2. The panel uses approximately 10 white LED. Although the power consumption is nearly 1.5 times higher than the use of CCFL, but due to the improvement of the luminous efficiency of white LED, so the power consumption has been greatly reduced. The white LED emitting white light is weaker in the green light intensity. Therefore, the color performance is improved by changing the color filter (Color; Filter) of the liquid crystal panel. However, did not announce the scope of color performance. And the production time has not been determined. MITSUBISHI motor exhibited a 12.1 inch panel module. Equipped with dozens of white LED, screen brightness up to 400cd/m2. Planned to be put into operation by the end of 2005. The company, which is the main equipment for industrial equipment, as the biggest advantage of LED backlight, has expanded the working temperature range. "If the CCFL is used at low temperatures below zero, the life of the panel will be shortened dramatically, and life will be prolonged by using the LED" (the company). Power consumption than the use of CCFL to obtain the same picture brightness to be more than 20% ~ 30%. The color range is about 40% NTSC.