Abstract— A novel front‐light system that uses an organic light‐emitting‐diode (OLED) light source patterned with a fine pitch has been developed. The front‐light system has the following characteristics: (1) excellent uniformity within the light‐emitting area; (2) emittance that is consistent at all viewing angles; (3) no light leakage at any viewing angle from the side of the observer. This system can be adopted for reflective LCDs, electrophoretic displays (EPDs), microelectromechanical systems (MEMS), and other applications.

We have developed a novel front-light system that uses an organic light emitting diode (OLED) light source patterned with a fine pitch. The front-light system has the following characteristics:1. Excellent uniformity within the light emitting area; 2. Emittance that is consistent at all viewing angles;3. No light leakage at any viewing angle from the side of the observer.This system can be adopted for reflective LCDs, electrophoretic displays (EPD), microelectromechanical systems (MEMS) and other applications.

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