electrode 24 disposed under the planar layer 18 and connected to the active array substrate 12 the transparent shielding layer 14 and the low impedance layer 16 are disposed above the common electrode 24 to prevent electrostatic discharge generated on the touch panel 10 and external noise from entering the active array substrate 12 through the common electrode 24 therefore electrical signals in a driving ic not shown or the active array substrate 12 would not be interfered by the electrostatic discharge or external noise in addition the touch display device 1 further includes two polarizing sheets 26 and 28 the polarizing sheet 26 is adhered to a top surface of the touch panel 10 and the polarizing sheet 28 is adhered to a bottom surface of the active array substrate 12 fig2 shows a touch display device of fig1 further including a transparent cover plate as shown in fig2 the transparent cover plate 11 is disposed between the polarizing sheet 26 and the color filter layer 20 the transparent cover plate 11 is made of for example a material with high strength scratch resistant and transmittance such as glass polyacrylate engineering plastic etc the structure shown in fig2 may be varied based on demand for device arrangement and manufacturing process fig3 shows a variation of the touch display device of fig2 as shown in fig3 the planar layer 18 is disposed under a.