Abstract: An automatic brightness adjustment method for a display panel is provided. The display panel operates in a current brightness range with a current brightness value. The method includes obtaining an ambient light brightness value, and determining whether the ambient light brightness value exceeds the current brightness range. In response to the ambient light brightness value exceeding the current brightness range, the method includes determining whether a duration for which the ambient light brightness value exceeds the current brightness range reaches a predetermined duration.

Abstract: An image displaying method includes the following steps. A first depth setting command is received from a first viewer who observes a first disparity between two images through two view angles in front of a stereoscopic display having N view angles. A second depth setting command is received from a second viewer who observes a second disparity between two images through another two view angles. The stereoscopic display is configured to adjust at least one image among its N view angles, thereby making the first disparity different from the second disparity.