ABSTRACT
Digital images are viewed, judged and manipulated using display systems. The two display types - liquid crystal display and cathode ray tube display (CRT) - have significant technological differences which affect the perceived quality of the displayed images. The image data in the computer is in the form of a stream of binary digits. The size of the frame buffer depends on the number of pixels that comprise an image and the number of bits that are associated with each pixel. When viewing images on a CRT display it is essential to allow the display to warm up. Passive matrix and active matrix flexible displays have been developed, with the glass substrates replaced by flexible materials. A different technology, the electrophoretic display, uses micro-capsules with white positively charged particles and black negatively charged particles in liquid. Image retention may occur in CRTs or plasma displays due to phosphor degradation when images are displayed unchanged for a long time.
