Patent ID: 9335854
Filing Date: 2016-05-10
CPC Classification: G06F,G09G

Claim Text:
1. A display device in which a plurality of optical sensors are arranged in a pixel region, the display device comprising: a display panel including a plurality of display pixel circuits, a plurality of sensor pixel circuits, a plurality of reset lines, a plurality of sensing control lines, a plurality of read lines, a plurality of output lines, and a plurality of power supply lines; and a drive circuit, each of the sensor pixel circuits include, the drive circuit is configured to, the sensor pixel circuits are classified into first sensor pixel circuits and second sensor pixel circuits, the sensing control lines are classified into first sensing control lines connected to the gate terminal of the retention transistor in the first sensor pixel circuits and second sensing control lines connected to the gate terminal of the retention transistor in the second sensor pixel circuits, the drive circuit is configured to, in the first sensor pixel circuit, the retention transistor is configured to turn on in the first sensing period in accordance with the first sensing control signal, a potential of the accumulation node changes by current that flow through the photodiode and the retention transistor in the first sensing period, and the potential does not change in a first retention period provided between the first sensing period and the read period, so that the first sensor pixel circuit is configured to sense light during the first sensing period and retain the amount of sensed light in the first retention period, in accordance with the first sensing control signal, and in the second sensor pixel circuit, the retention transistor is configured to turn on in the second sensing period in accordance with the second sensing control signal, a potential of the accumulation node changes by current that flow through the photodiode and the retention transistor in the second sensing period, and the potential does not change in a second retention period provided between the second sensing period and the read period, so that the second sensor pixel circuit is configured to sense light during the second sensing period and retain the amount of sensed light in the second retention period, in accordance with the second sensing control signal.