Japan Display (JDI) started shipment of 8.9-inch Wide-QXGA (2,560 x 1,600 pixels) low temperature poly-silicon (LTPS) TFT-LCD modules in September 2013. To date, most conventional tablet devices have employed amorphous silicon (a-Si) TFT-LCD technology, resulting in displays with low pixel density, wide dead-band areas, and high power consumption. JDI’s LTPS TFT-LCD technology has contributed to 40-50% less power consumption and about 30% narrower dead-band width compared to conventional designs for a-Si TFT-LCDs. A 7.0-inch Wide-UXGA (1,200 x 1,920 pixels) LTPS TFT-LCD module has been in mass production since June, 2013.
The 7.0-inch Wide-UXGA TFT-LCD has pixel density of 323ppi, and the 8.9-inch Wide-QXGA TFT-LCD is 339ppi. JDI’s in-plane switching (IPS) technology realizes wider viewing angles, a higher contrast ratio and less color shift. Since there are fewer LCD drivers, JDI’s LTPS TFT-LCD technology contributes to 70-80% less power consumption of the LCD driving system than conventional designs for a-Si TFT-LCDs. JDI’s LTPS TFD-LCD technology is able to achieve about 30% narrower dead-band width than conventional designs for a-Si TFT-LCDs. A large display within a thin device can be realized for easy portability.
