US Patent 11789578 Touch display device and display panel with improved touch sensitivity

Present disclosure provides a touch display device comprising a display panel including an inner area forming a first step between a first touch electrode metal with first critical dimension and a lower electrode layer, and an edge area having at least one of CD compensation area, which is located outside of the inner area, forming a second step between a second touch electrode metal with second critical dimension larger than the first critical dimension and the lower electrode layer; and a touch circuit for sensing touch presence or touch location by using a touch sensing signal received from the touch electrode metals.