As a kind of solid-state illumination source, organic light-emitting diode ( OLED ) not only has the characteristics of low consumption, environmental protection and safety, but also has the advantages of flat illumination, ultra-thin, arbitrary shape, large area, no heat dissipation and simple processing, and is considered to be the most The ideal lighting source. OLED can be used not only as indoor and outdoor lighting, backlight and decorative lighting, but also for the production of artistic flexible light-emitting wallpaper, transparent windows with monochromatic or color illumination, and wearable warning signs, etc., with a wide market. Application prospects. OLED lighting technology, especially white light lighting technology, has become a hot spot in the field of OLED research.
At present, white OLEDs reported in the world have reached a very high level in terms of brightness, efficiency and longevity. With government support and enterprise intervention, OLED lighting is moving from basic research to applied research.
In recent years, with the support of the National Fund Committee, the Ministry of Science and Technology and the Chinese Academy of Sciences, the Ma Dongge Research Group of Changchun Institute of Applied Chemistry is committed to OLED research. Recently, a series of important advances have been made in OLED interface materials, organic semiconductor doping technology, structural design of white OLEDs, effective regulation of carriers and excitons in white OLEDs, and research on the luminescence mechanism of white OLEDs. Power efficiency of white OLEDs In the absence of coupled output, it broke through 40lm/W (1000 cd/m2 brightness), which is the best result reported in China and reached the international level.
3 inch OLED luminescent panel and white OLED luminaire developed by Changchun Yinghua
The main circuit of the equipment is the full bridge controlled circuit and the trigger circuit is the programmable integrated circuit. The phase-shifting, fixed width and modulation of the pulse are all digitized, and it does not need any adjustment for the section of the trigger. It has the features of high reliability, high pulse symmetry, strong anti-interference ability, quick reaction, as well as the advantages of no heat-generating, constant current, energy-saving which is compared with the discharge with the electrical resistance.
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