Abstract: A signal control method suitable for a touch screen is provided. The signal control method comprises: switching a plurality of scan lines to an enabling voltage level sequentially in a display stage; turning on a plurality of switches sequentially to transmit a plurality of display data to a plurality of data lines when a first scan line of the plurality of scan lines is in an enabled voltage level, wherein a first switch of the plurality of switches is coupled to a first data line of the plurality of data lines, and the first data line corresponds to one of a plurality of dummy lines in a vertical direction, when the first scan line is in the enabled voltage level, the first switch is turned on after other switches are turned on; and setting the plurality of dummy lines to a touch voltage in a touch stage.

Abstract: A fingerprint identification device includes a backlight module and a sensing module. The sensing module is disposed on the backlight module. The sensing module includes a plurality of light sensing units and a plurality of light converting units. Each of the light converting units is disposed on a respective one of the light sensing units. The backlight module emits a first color light, the first color light passes through gaps between the light sensing units and then is reflected to the light converting unit, and the light converting unit converts the first color light into a second color light, such that the light sensing unit senses the second color light.

Abstract: A fingerprint identification device includes a backlight module and a sensing module. The sensing module is disposed on the backlight module. The sensing module includes a plurality of light sensing units and a plurality of light converting units. Each of the light converting units is disposed on a respective one of the light sensing units. The backlight module emits a first color light, the first color light passes through gaps between the light sensing units and then is reflected to the light converting unit, and the light converting unit converts the first color light into a second color light, such that the light sensing unit senses the second color light.