The OLED lighting panel made by the printing department of Matsushita Electric

Matsushita Electric produced a number of organic semiconductor printing methods produced by the OLED lighting panel. Both the luminous efficiency and color performance are obtained with higher values. This is the 18 in February 2009 to be held on the "printable Electronic Technology (Printable ELectronics 2009)" seminar in the company's speech was informed of the.

The luminous efficiency of OLED lighting panel for 40lm/W, said: CRI index of color performance (Color Rendering Index) value is 95, the external quantum efficiency is 36.1%, the initial brightness is 1000cd/m2 when the half period in more than 20 thousand hours.

In the manufacturing process, the semiconductor, known as the hole injection layer, is fabricated using a method called Coating (Slit). "Just as the material in this layer is also suitable for coating with excellent performance" (Matsushita Electric). Slit coating method is a technique used in the manufacture of liquid crystal panel. Matsushita Electric will cooperate with the development of OLED lighting technology company TAZMO provided by the device to be modified to make it suitable for OLED purposes. When using slit coating, the film thickness is 40 ~ 50nm. The film thickness uniformity is + 5%, the coating speed reaches 100mm/s "(Matsushita Electric).

The realization of the 40lm/W luminous efficiency and the actual luminous efficiency of fluorescent lamp equivalent (Matsushita Electric). This is because, although the luminous efficiency of the fluorescent lamp can reach 80 ~ 100lm/W, but the use of diffuse light for the shade and low reflectivity of the reflector will make the actual efficiency of 1/2.

Only from the luminous efficiency point of view, there are several manufacturers to achieve a higher value. For example, Universal Display Technology (UDC) reached 102lm/W. However, the company's panel CRI value of only 70. Matsushita Electric is different, as the conditions for the use of OLED lighting, the company has always attached great importance to the excellent performance of color. "If the color is low, the strawberries will look like rotten"