Sony Corp announced that it had developed an LCD panel equipped with touch panel functionality Dec 20, 2007. The panel eliminates the need for an external touch panel and allows input using multiple fingers.
The product features a 3.5-inch screen with a resolution of 640 x 480. Based on the system on glass (SOG) technology using low-temperature poly Si, the photodetector is concurrently formed in the TFT array process. LCD panels with a similar function have been prototyped by Toshiba Matsushita Display Technology Co Ltd (TMD), Sharp Corp and other manufacturers (See related article).