ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,817, issued on Dec. 16, was assigned to LG Display Co. Ltd. (Seoul, South Korea).

"Touch display device for pen touch with enhanced uplink signal to supplies TDX effect" was invented by SungChul Kim (Paju-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A touch display device and a driving method for the touch display device are disclosed. A touch circuit supplies an uplink signal to a touchscreen panel. A first uplink signal which is a first waveform signal is supplied to a first touch electrode. A second uplink signal which is a second waveform signal is supplied to a second touch electrode. The effect of the uplink signal on display...