Patent ID: 7098592
Filing Date: 2006-08-29
Classification: G06F,H01L

Abstract:
1. An electroluminescent display device comprising: a display portion comprising a plurality of display pixels arranged in a matrix, each of the pixels comprising a display electroluminescent element and a driving transistor driving the display electroluminescent element; a light source portion comprising a plurality of light source electroluminescent elements and provided along a first side of the display portion; a light detecting portion comprising a plurality of light sensors and provided along a second side of the display portion, the second side being opposite from the first side, wherein the display portion, the light source portion and the light detecting portion are disposed on a substrate; a first reflecting board reflecting light emitted by the light source portion in a horizontal direction along a front surface of the substrate across the display portion; and a second reflecting board reflecting the light reflected by the first reflecting board so as to lead the light into the light detecting portion through a back surface of the substrate.