ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,931, issued on Sept. 23, was assigned to LG DISPLAY Co. LTD. (Seoul, South Korea).
"Display apparatus" was invented by YuSeon Kho (Paju-si, South Korea), Yong-Su Ham (Paju-si, South Korea) and YongWoo Lee (Paju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display apparatus includes a display panel configured to display an image and a film actuator configured to vibrate the display panel. The film actuator may include a plurality of vibration generating devices configured with a composite film. The plurality of vibration generating devices may be configured to have different expansion coefficients from each other."
The patent wa...