OLED refers to the phenomenon of light emission caused by carrier injection and recombination driven by an electric field. The principle is to use the IT O glass transparent electrode and the metal electrode as the anode and cathode of the device respectively. Under a certain voltage driving, electrons and holes are injected from the cathode and the anode to the electron and hole transport layer, respectively, and then migrate to the light emitting layer respectively. The encounter forms excitons to excite the luminescent molecules, and the latter emits visible light after being irradiated. Radiation light can be observed from the ITO side, and the metal electrode film also functions as a reflective layer.
According to market research firm DisplaySearch, OLEDs have bright prospects in the development of display and lighting applications. Although only a few manufacturers are currently supplying OLED-related products, it is estimated that the output value of the global OLED industry in 2010 has reached the $1 billion mark. As more and more manufacturers gradually introduce mass production, which will increase the supply of OLEDs, the scale of the OLED market will continue to expand rapidly. In 2011, the output value has an opportunity to reach more than 2 billion US dollars, with an annual growth rate of 100%.
At present, the two main application markets of OLED are display and illumination, and the development of display applications is relatively fast. At present, there are many consumer electronic products such as mobile phones, MP3s, digital cameras, and car displays, which are introduced into PMOLED panels or AMOLED panels. Especially in major brands such as SAMSung, Nokia, HTC and other large manufacturers, high-end mobile phone applications using AMOLED panel screens are becoming popular.
As far as the development of display applications for OLED panels is concerned, AMOLEDs are an alternative threat to the current mainstream display technology TFT-LCD (Thin Film Transistor Liquid Crystal Display). Because AMOLED does not require components such as liquid crystal, backlight, backlight module, color filter, etc., the amount of material is reduced, the loss of the environment is relatively reduced, and the color saturation and contrast are better, and the power is saved. It is lighter and thinner (the thickness of the panel is only about 1mm, which is thinner than 2-3mm of TFT-LCD panel), the reaction speed is faster, and there is no residual image. In the future, there is still the opportunity to develop towards soft display applications.
However, Risheng Securities Investment Consultant pointed out that the main obstacle of AMOLED panels at this stage is that the development of TFT-LCD technology has been quite mature so far, and has formed a huge industrial cluster, with other supply chain advantages that display technology is difficult to surpass in the short term. In addition, the TFT-LCD panel has also been developed to the 10th generation line, and it has an absolute cost advantage in ultra-large size applications. In addition, the average lifetime of TFT-LCD panels has reached 600-100,000 hours, but the quality of AMOLED panels in terms of service life is still uneven.
In addition, how to improve the yield is also one of the key breakthroughs in the current development of AMOLED technology. In particular, the organic material film formation of the AMOLED light-emitting layer in the vapor deposition process, including the relative position of the metal mask micropores, suspended particles, etc., will affect the film formation yield. As for the packaging technology of AMOLED, the metal cover, desiccant and plastic frame package were used in the early stage. Later, it evolved into glass frit package and full solid filling package. In the future, it will be developed towards thin film packaging to continuously improve moisture isolation and improve luminous life. .
As for the O LED lighting application, according to the opinion of the scholars, OLED lighting has energy saving, carbon reduction, no mercury, no ultraviolet light, no infrared light, no high heat, no glare, low driving voltage, soft dimming and soft flexibility. Other characteristics and advantages have been invested in the development of many international lighting brand manufacturers in recent years.
However, due to the short-term OLED lighting, there are still some key obstacles such as service life, luminous efficiency and cost. The industry believes that OLED lighting products should be introduced into the mass production and commercialization stage, and it may take at least 1-2 years to compare with LED lighting. Later.
A number of different industries commonly use LED Neon Light Signs – shop, store, home, hotels, bar, restaurant and more. We offer a long-lasting and economical solution for any of your professional, and even personal, Neon Signage needs. Our custom neon sign boards provide both a functional, art and aesthetic purpose. Whether indoors or outdoors, these illuminated neon signs help establish a high-end impression for your business.
Led Neon Light Signs,Outdoor Led Open Sign,Led Sign Boards,Outside Neon Lights
Shenzhen Oleda Technology Co.,Ltd , http://www.baiyangsign.com