LG Display Co Ltd exhibited a 19-inch flexible electronic paper (e-paper) device at FPD International 2010/Green Device 2010, a trade show taking place in Chiba City, Japan.
The thickness of the e-paper device, which LG Display claims is the world's largest flexible e-paper device, is 0.601mm including its protective film. The device drives E Ink Corp's e-paper by using amorphous silicon (Si) TFTs formed on a stainless substrate.
The pixel count and resolution of the e-paper device are 2,560 x 1,600 and 163ppi, respectively. It can display 16 levels of grayscale. Its reflectance is 40% or higher, and its contrast ratio is 7:1 or hither.
The viewing angle of the e-paper device is 140°, horizontally and vertically. Its gate driver circuit is formed by using amorphous Si TFTs.
LG Display also showcased a 9.7-inch color e-paper device whose pixel count is 800 x 600. It can display 4,096 colors and has a 2.9% color gamut on NTSC standards. Color filter layers of red, green, blue and white colors are directly formed on an e-paper film. Its reflectance and contrast ratio are 26% and 10:1, respectively.