updated 11:10 am EST, Thu January 4, 2007
Samsung's double-sided LCD
A new technology allows two different images to be displayed on the opposing sides of the same LCD, Samsung claims. The secret is a change to the standard TFT (thin-film transistor) architecture, which normally has a single gate to convert voltage at the pixel level; by creating a double-gated design, power can be sent to two crystals at the same time. This forms a part of Samsung's Amorphous Silicon Gate (ASG) technology, which supports the increased number of gates without requiring larger driver integrated circuits. Moreover, ASG screens need just one backlight, relying on trapped light from one side to aid in reflection on the other.
Samsung expects the new technology to be used primarily in mobile devices, since the current prototype is 2.2 inches wide and only supports resolutions up to 240x320. The main screen is also technically superior to rear one, having 250 nits of brightness versus 100, and 60 percent color saturation instead of 10 percent. The company will be demonstrating the LCD at CES.