Electronic Paper: LG Philips demonstrates color A4-size E-Paper

img LG P color e-paper  LG Philips LCD, the world’s second largest liquid crystal display maker, has developed the first A4-sized color electronic-paper.

The flexible display panel which is 35.9cm across its diagonal and just 0.3 millimeters thin can display up to 4096 colors. The company says that the images displayed are comparable in quality to printed pages. The e-paper panel only uses power when the image changes on the display.

Like the black and white flexible display, the color version uses a substrate that arranges Thin-Film Transistors (TFT) on metal foil rather than glass, allowing it to recover its original shape after being bent. This model includes a color filter coated onto the plastic substrate, allowing it to display color images.

LG.Philips LCD’s use of metal foil and plastic substrate rather than glass substrate makes the flexible color E-paper display bendable and durable while maintaining excellent display qualities.

To make this new display possible the company developed proprietary processing technology that minimizes panel deformation and prevents circuit structure change during high-temperature processes. LG.Philips LCD focused on the designs of the color filter structure and TFT, as well as color filter lamination technology. This allowed them to overcome processing difficulties inherent in the lack of heat resistance in metal foil and plastic substrates.

“LG.Philips LCD is the first company to develop a flexible color E-paper display of this size.” said Mr. In-Jae Chung, the company’s Chief Technology Officer and Executive Vice President. “The potential applications for this display are incredible and will allow our customers to create new products that are not only convenient to use but also save natural resources. This represents the next generation in display technology.”



In October 2005 LG.Philips LCD unveiled the world’s first 10.1-inch flexible E-paper display. The company followed it up with its groundbreaking 14.1-inch model in May 2006.

More information: LG Philips press release

Photo: LG Philips

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