Taiwanese researchers have developed an LCD screen, which knows where the viewer is and automatically adjusts itself to provide better images. Chih-Nan in cooperation with Wayne Cheng has developed the screen at the Photonics and Display Institute, National Chiao Tung University in Taiwan. So far, the researchers have developed a prototype display, which connects to a miniature camera that tracks the location of a viewer.
Software then adjusts the liquid crystals within the display to produce the clearest possible image. The new technique stops the problem of seeing a blurry or distorted image, if you view an LCD screen from an angle. The LCD screen includes tiny valves and Miniature camera.
Tiny valves: The brightness of each pixel in an LCD is controlled by altering the angle of the liquid crystals held between two polarising elements. These crystals act like tiny valves, which effectively alter the viewing angle of these crystals. Thus it reduces the brightness and contrast of a pixel and also distorts the clarity and colors of an overall image.
Miniature camera: The prototype device uses software, which tracks the location of the viewer. The orientation of liquid crystals in the display and the power fed to light emitting diodes behind each and then adjusted to provide the best image.
According to Wayne Cheng, viewing angle is an inherent and fundamental problem for the LCD due to its working principle. Now researchers are working on infrared sensor, which tracks a users by the position of their eyes.
Image Credit: Tech Fresh
Via: Engadget
