Large Stereoscopic LED Display by Use of a Parallax Barrier

Since the development of high-brightness blue and green LEDs, the use of outdoor commercial LED displays has been increasing. Because of their high-brightness, good visibility, and long-term durability, LED displays are a preferred technology for outdoor installations such as stadiums, street advertising, and billboards. This chapter deals with a large stereoscopic full-color LED display using a parallax barrier. We discuss optimization of viewing areas, which depend on LED arrangements. Enlarged viewing areas have been demonstrated by using a three-in-one chip LED panel that has wider black regions than ordinary LED lamp cluster panels. We have developed a real-time system to measure a viewer’s position and investigated the movements of viewers who watch different designs of stereoscopic LED displays, including conventional designs and designs to eliminate pseudoscopic viewing areas. The design of parallax barrier for plural viewers was utilized for a 140-inch stereoscopic LED display.