Electroluminescent display devices

摘要

An active matrix display device has pixels each with a light-sensitive device ( 84 ) for optical feedback functions. Each pixel has a light blocking structure ( 100 ) formed from the thin film layers of the display substrate in the proximity of the light-sensitive device ( 84 ) and substantially at the level of an input surface of the light sensitive device. This structure prevents the passage of light (g) to the light sensitive device from a substantially lateral direction.