Patent ID: 8823683

Claim:
A touch pixel array substrate for a touch display panel, the touch pixel array substrate comprising: a first substrate; a plurality of data lines, a plurality of read-out lines, a plurality of first voltage-shielding lines and a plurality of second voltage-shielding lines, the data lines, the read-out lines, the first voltage-shielding lines and the second voltage-shielding lines being substantially disposed in parallel on the first substrate, wherein each of the read-out lines is located between two of the data lines, each of the first voltage-shielding lines and the second voltage-shielding lines is located between one of the read-out lines and one of the data lines, and two sides of each of the read-out lines are adjacent to one of the first voltage-shielding lines and one of the second voltage-shielding lines, respectively; a plurality of scan lines and a plurality of signal-control lines, the scan lines and the signal-control lines being located on the first substrate and respectively intersecting the data lines, the read-out lines, the first voltage-shielding lines and the second voltage-shielding lines; a plurality of active devices located on the first substrate and electrically connected to the scan lines and the data lines correspondingly; a plurality of pixel electrodes located on the first substrate and electrically connected to the active devices correspondingly; and a plurality of photo-sensing units located on the first substrate and electrically connected to the scan lines, the signal-control lines, and the read-out lines correspondingly, each of the photo-sensing units at least comprising a capacitor, the capacitor includes a first electrode and a second electrode, wherein the second electrode of the capacitor is connected to one of the first voltage-shielding lines and the second voltage-shielding lines corresponding to the second electrode of the capacitor.