Samsung has introduced the 18.5" LapFit LD190G and 21.5" LapFit LD220G in South Korea, both low-profile LCD displays are designed for laptop users. These secondary displays connect to your notebook via USB and are positioned at the same height as your laptop's screen. The Samsung LapFit displays should be more comfortable to use with desktop replacement notebooks than traditional LCD displays. It's unknown whether the LapFit displays have other video inputs.
The press release says both panels have a resolution of 1360 x 768 pixels, a dynamic contrast ratio of 20,000:1 and a response time of 5ms. More details at Samsung but it's all in Korean.