The road to large-scale OLED panel is exposed to the dawn (1): LG actively promotes
Lighting use is another driving force
Another driving force for the large-scale OLED panel is the formation of the OLED lighting market. OLED lighting with "face-emitting", "transparent", "light & thin" features can be used differently from existing light sources such as fluorescent lamps and incandescent bulbs, as well as white LEDs due to energy-saving development. Therefore, new manufacturers Have been involved (Reference 1).
References 1) Nozawa: "The main character of the OLED aiming lighting field" (Nikkei Electronics, November 3, 2008, no. 990, pp. 87-97.)
The mass production trend of OLED lighting is even more active than small OLED panels. In Japan, in addition to Lumiotec scheduled to start mass production in January 2010, Konica Minolta Holdings announced in November 2009 that it will spend 3.5 billion yen to build a trial production line. Overseas, companies such as Royal Philips Electronics (NV) and General Electric have also planned mass production. According to DisplaySearch's forecast, the OLED lighting market will sprout in 2010 and expand to approximately $2.838 billion in 2016.
The mass production of small OLED panels and the popularity of OLED lighting are expected to promote the practical use of large OLED panels. This stems from the fact that both can share most of the materials and components, as well as the accumulation of mass production yield enhancement techniques.
Can you take the hot air of environmental protection?
In 2009, “energy saving†and “environmental protection†gradually became an important factor in the competition of flat-panel TVs, and also promoted the practical use of large-scale OLED panels (Figure 3). For example, in January 2009, Sony released the "BRAVIA VE5" series of LCD TVs that consume 40% less power than the original. In September 2009, Sharp launched the "LED AQUOS LX" series with white LED backlights for image quality and energy saving. Considering the increase in consumer environmental awareness, this trend is likely to continue in the future.
Figure 3: Launching an offensive against the background of “environmental protectionâ€
OLED TVs rely on "beautiful" and "ultra-thin" to make LCD TVs an advantage. Self-illuminating OLED panels make it easier to promote “environmental protectionâ€. The liquid crystal panel using the backlight source can be said to have an energy saving limit.
The odds of the OLED panel are that "the liquid crystal panel has a low power consumption limit in construction" (Japanese liquid crystal technician). The liquid crystal panel controls the liquid crystal molecules by voltage, and displays gray scale by partially transmitting or blocking the backlight. Not only the structure is complicated, but also has multiple components such as TFT, liquid crystal layer, color filter, polarizing plate (2 pieces) and glass bottom plate (2 pieces), and the light rays of each component are lost. "The transmittance of the backlight of the existing LCD panel is only about 5%. It is extremely difficult to increase it greatly" (ibid.).
The OLED panel is a self-luminous component, and the loss in principle is small. "As long as the efficiency of the luminescent material is improved, the power consumption of the OLED panel can be reduced." "The power consumption should be lower than that of the liquid crystal panel," many OLED technicians think.
In this case, various manufacturers have regrouped to develop large-scale OLED panels for television. In addition to the aforementioned LG display, Sony also reiterated its determination to continue investing in the development of autonomous displays such as OLED panels at a business briefing held in November 2009.
Samsung Electronics, the world's largest TV manufacturer, has yet to announce a mass production plan for large OLED panels. But the company's largest small OLED panel maker SMD has almost dominated the production of active matrix OLED panels (Figure 4). It can be said that the company has accumulated the most abundant OLED panel production experience. Therefore, there are constant predictions: "South Korea's Samsung Electronics may transform the production line now used for the 5th generation LCD panel into a TV OLED panel production line" (many analysts who are proficient in the TV industry) 4). (To be continued reporter: Saeki Shinya)
Note 4) The glass substrates used for the production of liquid crystal panels are referred to as the first generation, the second generation, and the like in order of increasing area. The fourth generation is 730 mm × 920 mm, the fifth generation is 1100 mm × 1300 mm, the sixth generation is 1500 mm × 1800 mm, and the eighth generation is 2160 mm × 2400 mm.
Figure 4: SMD's exclusive active matrix market chart shows the share of manufacturers in the OLED panel market. In fiscal year 2009, Samsung Mobile Display, which is the first to mass-produce active-matrix OLED panels, is expected to account for more than 70% of the total. This figure is based on DisplaySearch data.
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