Patent ID: 7880495
Filing Date: 2011-02-01
Classification: G09G

Abstract:
1. A display device comprising: a substrate; a plurality of signal lines and a plurality of scanning lines that intersect with each other over the substrate; a common line that is provided over the substrate; a plurality of display pixels that is arrayed in a matrix layout over the substrate, each of the plurality of display pixels including a thin film transistor and a pixel electrode, the thin film transistor being provided in the neighborhood of an intersection of the signal line and the scanning line, the thin film transistor functioning as a switching element, the pixel electrode being electrically connected to the thin film transistor; a light sensor element that is provided over the substrate, the light sensor element being made of a thin film transistor that detects the amount of light; an electrostatic protection element that is provided over the substrate, the electrostatic protection element being made of a thin film transistor that protects the light sensor element so that the light sensor element is not damaged by static electricity; a plurality of testing terminals that is connected to the plurality of signal lines, the plurality of scanning lines, and the common line at a lead part that leads from the plurality of signal lines, the plurality of scanning lines, and the common line; two light sensor element signal lines that respectively extend from a first electrode of the light sensor element and a second electrode of the light sensor element to the lead part, one light sensor element signal line being connected to a testing terminal other than the plurality of testing terminals, the other light sensor element signal line being connected to another testing terminal other than the plurality of testing terminals; a light sensor element control line that extends from a control electrode of the light sensor element to the lead part, the light sensor element control line being connected to still another testing terminal other than the plurality of testing terminals; and an electrostatic protection element control line that extends from a control electrode of the electrostatic protection element to the lead part, the electrostatic protection element control line being connected to still another testing terminal other than the plurality of testing terminals, wherein the testing terminals of the light sensor element signal lines are arrayed adjacent to two testing terminals of the plurality of signal lines, respectively, and the testing terminal of the common line, the testing terminal of the light sensor element control line, and the testing terminal of the electrostatic protection element control line are arrayed in an adjacent manner.