Patent ID: 8963901
Filing Date: 2015-02-24
Classification: G09G

Abstract:
1. A display device for adjusting a gray-level of a image frame depending on environment illumination, comprising: a reflecting ambient light display-panel, for displaying an image frame with a plurality of pixels, and each pixel of the reflecting ambient light display-panel reflects an ambient light according to a gray-level thereof; an optical-sensor, for obtaining the environment illumination, wherein the optical-sensor and the reflecting ambient light display-panel are located on the same side surface of the display device; a controller, for driving the display-panel to display the image frame; and an adjusting module, for adjusting gray-levels of at least partial pixels in the image frame according to the environment illumination; wherein a reference illumination range is designated to the adjusting module, and the adjusting module determines whether the obtained environment illumination is within the reference illumination range; wherein when the environment illumination is higher than the reference illumination range, the adjusting module raises the gray-levels of at least partial pixels in the image frame according to the environment illumination; wherein when the environment illumination is lower than the reference illumination range, the adjusting module reduces the gray-levels of at least partial pixels in the image frame according to the environment illumination; and wherein a gray-level median interval is further designated to the adjusting module; when the environment illumination is higher than the reference illumination range and an average gray-level of the image frame is lower than or higher than the gray-level median interval, the adjusting module performs an image inverse process on the image frame.