Hitachi Utilizes Its Own Coating Process to Develop OLED Lighting Panel

Hitachi Research Laboratory (HRL) of Hitachi Ltd exhibited a prototype of an OLED lighting panel made by using a coating process at Lighting Fair 2013 from March 3 to 8, 2013, in Tokyo.
 
For the panel, HRL used the "spontaneous multilayer light-emitting layer formation material," which enables to make an OLED lighting panel just by applying HRL's own red (R), green (G) and blue (B) light-emitting materials once.

In general, white OLED lighting panels made by using a coating process are made by applying RGB light-emitting materials in three or more stages to form RGB light-emitting layers. However, in this process, upper layers react with lower layers, destroying the layer structure.


On the other hand, with the spontaneous multilayer light-emitting layer formation material, after mixing together the RGB light-emitting materials (dopants) consisting of low-molecular materials and applying it once, green, blue and red layers are automatically formed in this order from bottom up because of the effect of self-organization.
 
As a host material, the same wide band-gap material is used for the RGB dopants. The prototyped OLED panel with a light-extraction layer emits light with a luminous efficiency of up to 70lm/W.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Tokushima, Japan - 6 March 2024: Nichia, the world's largest LED manufacturer and inventor of the high-brightness blue and white LED, has started mass production of the new UV-B (308nm) and UV-A (330nm) LEDs in its popular 434 Series packa... READ MORE

New XLamp® S Line LEDs enhance growth, last longer, lower energy costs Horticulture and other forms of agricultural lighting require application-tuned ratios of spectral content, high efficacy and long lifetimes. Whether you are interested... READ MORE