Light emitting diodes (LED) and organic LED (OLED) are characterized by compactness, long lifetime, high luminous density, and good energy efficiency. This development also revolutionizes display technology. By using LED as light source for today’s liquid crystal displays (LCD), more compact display systems with greatly improved energy efficiency and colour rendering become feasible. The next big step will be the replacement of LCD by OLED matrix displays. These developments lead to completely new design possibilities for lighting and display systems. For the knowledge workplace, this means moving beyond today’s screen-centric workplace.