Patent ID: 8907924
Filing Date: 2014-12-09
Classification: G06F

Abstract:
1. An information detection display comprising: a plurality of light sensing units each configured to detect light, first and second sensor scanning drivers, wherein the first sensor scanning driver is configured to apply sensor scanning signals to a first group of the light sensing units and the second sensor scanning driver is configured to apply sensor scanning signals to a second group of the light sensing units; a sensing signal processor configured to receive position information detected by each of the light sensing units; a first bias applying unit configured to apply bias voltages to first and second bias lines of the first group of light sensing units, and a second bias applying unit configured to apply bias voltages to first and second bias lines of the second group of light sensing units, wherein while the first sensor scanning driver applies sensor scanning signals to the first group of the light sensing units, the first bias applying unit applies a first bias voltage to the first bias line of the first group of the light sensing units and a second bias voltage to the second bias line of the first group of the light sensing units, and while the second sensor scanning driver applies sensor scanning signals to the second group of the light sensing units, the first bias applying units applies a third bias voltage to the first bias line of the first group of light sensors and a fourth bias voltage to the second bias line of the first group of the light sensors, and wherein a polarity of the first voltage is opposite to a polarity of the third bias voltage and a polarity of the second bias voltage is opposite to a polarity of the fourth bias voltage, and wherein while the second sensor scanning driver applies sensor scanning signals to the second group of the light sensing units, the second bias applying unit applies a fifth bias voltage to the first bias line of the second group of the light sensing units and a sixth bias voltage to the second bias line of the second group of the light sensing units, and while the first sensor scanning driver applies sensor scanning signals to the first group of the light sensing units, the second bias applying units applies a seventh bias voltage to the first bias line of the first group of light sensors and an eighth bias voltage to the second bias line of the first group of the light sensors, and wherein a polarity of the fifth voltage is opposite to a polarity of the seventh bias voltage and a polarity of the sixth bias voltage is opposite to a polarity of the eighth bias voltage.