updated 02:10 pm EDT, Wed October 21, 2009
HP L2105tm made for fingers, stylus
HP at mid-day updated its Compaq displays with one of its first mainstream multi-touch displays. The 21.5-inch L2105tm has a built-in optical sensor that recognizes two-point touch input in operating systems that support it but can still accept input from an included stylus for artwork or other more precise apps. To help, the display is specifically designed for touch and has a fixed-height panel that won't shift around in mid-use.
The screen displays at a full 1080p but keeps costs down through the use of a TN panel with a 72 percent color gamut and a 170-degree viewing angle; it musters a 1,000:1 static contrast ratio and a 5ms pixel response time. DVI and VGA are its only video input choices, but a built-in, two-watt speaker system provides it with basic sound for workplaces where external speakers aren't an option.
Shipments of the L2105tm start next week and should see the LCD priced in line with many non-touch displays, at $300. It's officially intended for Windows 7 but will work with earlier versions of Windows and other platforms that can recognize touch input over USB.