US-based SiPix Imaging, which develops electrophoretic display (EPD) technologies, expects  to launch electronic books by the end of this year, according to the company.   SiPix said it is working with display module makers, including Chi Hsin Electronics (CHE), Chi  Lin Technology, Chunghwa Picture Tubes (CPT), and Wintek, to separately develop electronic  books, and the products may be unveiled by the end of 2008.   SiPix, which uses its roll-to-roll technology to make EPD materials, has...