Patent ID: 8184090
Filing Date: 2012-05-22
Classification: G06F,G09G

Abstract:
1. A display device comprising: a display part on which a plurality of pixels are arranged in a matrix array; and a plurality of photo detection circuits which are arranged in a matrix array in the inside of the display part, wherein each photo detection circuit of the plurality of photo detection circuits includes: a photo sensor which converts an incident light into an optical current corresponding to intensity of the incident light; an integral capacitance which integrates the optical current converted by the photo sensor; and a comparator to which a voltage of the integral capacitance is inputted; and the comparator includes a transistor of an open drain output type with a grounded source, wherein an initializing voltage which initializes the integral capacitance is applied to the integral capacitance via a reset line, an output of the comparator includes X output lines, an X output circuit which is connected to Y output lines which intersect the X output lines and to which the respective X output lines are connected, and a Y output circuit to which the respective Y output lines are connected, and the X output circuit and the Y output circuit are arranged around the display part.