OLED lighting new technologies emerge one after another light source lamps

The use of new OLED lighting technology and design of the development of lighting fixtures never stop. March 2013 5 ~ 8 lighting exhibition held in the lighting exhibition on a large number of new public OLED lighting technology, 2013.

Give full play to the characteristics of OLED lighting

This exhibition is not a matter of concern in the past to follow the style of lighting products, but give full play to the characteristics of OLED lighting panels and appliances group. The characteristics of the OLED lighting include (1) the light source is the surface light, (2) the thin light weight, (3) can realize the flexibility, (4) can be made transparent, etc.. It has been the focus of development to ensure that the required minimum lighting brightness and improve luminous efficiency, and recently, the development of (1) ~ (4) features began to rise in full swing (Figure 1).

For example, MITSUBISHI electric lighting displays a light-emitting panel in the glass, not directly from the outside to see the light source products. Using the characteristics of OLED lighting (1) and (2).

Konica Minolta has exhibited two light panels made of a resin substrate, which can "flap the wings" like a bird". This is the use of (2) and (3) the characteristics of the sample trial, according to the company, "the weight of only the use of glass substrate when making 1/10, can bend like paper".

"Luminous window" into reality

NEC lighting and Toshiba have developed the use of (4) can be made into a transparent form of the characteristics of the light-emitting panels and appliances (Figure 2). NEC lighting developed in the transmission of the largest size of the 20cm OLED square panel, the display of the panel with the use of light-emitting windows".

Toshiba and Toshiba lighting technology using independent technology to develop a transmission type OLED panel. The back electrode of the transmission OLED was replaced by a transparent electrode. But there are a lot of back panel light topic. For windows, not only indoor, outdoor lighting, which may lead to waste of electricity and the formation of light pollution.

The development of the Toshiba and so on, most of the light is exposed to the front panel, the back will leak out only a few dozen (the company commentator) technology.

Hitachi with independent technology involved in OLED lighting business

In addition, a new set of OLED lighting business big manufacturers. It is produced by Hitachi. The use of the company's independent development of the coating process, not only to achieve a high luminous efficiency of 70lm/W, but also reduces the manufacturing costs. In general, white light-emitting panels need to be on the red (R), green (G) and blue (B) to form a different light-emitting layer. But at this point is that, for the above layer coating will damage the following layer.

Hitachi made the coating technology only once RGB three layer is formed, so there is no such problem (Figure 3).

Advances in OLED lighting technology have also made progress. OLED (PIOL) and DN (DNL), respectively, have been developed to make the light source part and the base part of the OLED light emitting panel away from the light source part of the LIGHTING lighting panel (Figure 4).

PIOL said, the luminous life of about 10 thousand hours, a little short, so it is very important to replace the light source".