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Optoelectronics/Displays??

Flexible e-paper reaches 100mm curved radius

Posted: 22 Oct 2009 ?? ?Print Version ?Bookmark and Share

Keywords:e-paper? electrophoretic display panel? flexible electronics?

AUO flexible e-paper display

In line with its dedication to the development of green innovation, AU Optronics Corp. (AUO) has unveiled a 20-inch electrophoretic display (EPD) module and 6-inch flexible e-paper technology and other products. The flexible e-paper samples are planned for 2010 to provide a power-efficient and convenient green lifestyle to the consumer market.

After marking the worldwide debut of its 6-inch touch function e-book at Display Taiwan 2009, AUO has launched its first 6-inch flexible e-paper technology Adopting Sipix's exclusive Microcup technology, this flexible e-paper incorporates a plastic substrate, so that the display can be repeatedly bended, allowing it to match even more closely the functionality of real paper. The flexible e-paper is portable and unbreakable, significantly increasing the product's durability. While the curved radius of this e-paper reaches 100mm, it remains flexible and features 16 gray levels, a 9:1 high contrast ratio, and a reflectance of 33 percent. In terms of power consumption, there is no electricity required during reading and it consumes power only when the image is updated. Using the roll-to-roll manufacturing process, the technology allows for the commencement of volume production with higher yield rates, making it more cost-competitive. The size of the flexible e-paper is able to be tailor-made based on customers' needs. AUO expects to distribute samples and start volume production in 2010.

AUO's 20-inch EPD module is the largest EPD size currently ready for mass production. It will be the best choice for future applications in public information display because of its ability to eliminate backlight. It also features extremely low power consumption of less than 2W as well as 16 gray level capabilities.

Other EPD applications include 2-inch electronic shelf label (ESL), and 6-inch & 9-inch touch function built-in e-book displays. Since the 2-inch ESL uses active matrix equipped bi-stable image characteristics, label images can be maintained for at least one month without electricity supply on the shelf. With the in-cell touch functions and embedded single chip solution, the debut 9-inch e-book display provides a 1,024 x 768 HD screen. AUO also debuts its 2-piece 6-inch e-book with foldable design. Consumers can combine e-book reading with a traditional reading experience.

"As a technology in great demand to replace paper applications, e-paper, with its environmentally friendly features, will bring about more innovative and portable CE products and applications to the market. In addition, the mass production of the flexible e-paper will drive the next wave of the reading revolution," said CT Liu, senior VP and general manager of consumer product display business group of AUO. "AUO holds the advantage of having integrated technologies and manufacturing capabilities. With the fully supported panel capacity in the different generations of fabs, AUO applies its 4G lines to produce e-tags, 5G lines for 6-inch to 10-inch e-book panels, and 6G or 7.5G to produce e-signage display panels. In the near future, AUO will continue to provide customers with full-range services that lead the industry."





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