| CPC G02F 1/13312 (2021.01) [G02F 1/13338 (2013.01)] | 6 Claims |
|
1. A liquid crystal display device with an optical sensor comprising:
a first substrate;
a second substrate facing the first substrate; and
a liquid crystal layer located between the first substrate and the second substrate, wherein
the first substrate comprises:
a first signal line that supplies a video signal to a first sub-pixel corresponding to red, a second signal line that supplies a video signal to a second sub-pixel corresponding to green, and a third signal line that supplies a video signal to a third sub-pixel corresponding to blue;
an optical sensor comprising a photoelectric conversion element that outputs a detection signal in response to light incident from the liquid crystal layer side;
a first power feeding line that supplies a first voltage to operate the optical sensor, a second power feeding line that supplies a second voltage to operate the optical sensor, and a third power feeding line that supplies a third voltage to operate the optical sensor; and
a sensor signal line that outputs the detection signal,
a sensor electrode that detects an approach or contact of an object; and
a first detection wiring line and a second detection wiring line that are connected to the sensor electrode, wherein
the first power feeding line is located between the third signal line and the first detection wiring line in a thickness direction of the liquid crystal display device,
the second power feeding line is located between the second signal line and the second detection wiring line in the thickness direction,
the third power feeding line is located between the first signal line and the sensor signal line in the thickness direction,
the first detection wiring line and the second wiring line are arranged on the same layer as the sensor signal line,
the second detection wiring line includes a branch portion overlapping the optical sensor in planar view, and
the branch portion includes an opening that transmits light parallel to a normal direction of an upper surface of the photoelectric conversion element among light incident from the liquid crystal layer side.
|