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P‐75: Improved Optical Characteristics of a Front‐Light System Using Fine‐Pitch Patterned OLED

We have been developing a front‐light system that uses an OLED light source patterned with a fine pitch. This system can be used in reflective LCDs, electrophoretic displays (EPD), microelectromechanical systems (MEMS) and other applications. In this paper, we present a new structural design for an OLED front‐light system. In the new system, the space between a pair of glass substrates is filled with resin, and a pattern of black resin is formed on the counter‐substrate such that it corresponds to a pattern of Al cathodes. The new system has excellent characteristics as a front‐light. Light is used more efficiently than in the conventional design, and the reflection of ambient light can be avoided.