Patent ID: 8659538
Filing Date: 2014-02-25
Classification: G09G,Y10T

Abstract:
1. A transflective liquid crystal display device, comprising: a display panel having a viewing area, wherein the viewing area comprises a transmissive region and a reflective region; a backlight device disposed under the display panel, wherein the backlight device provides a backlight passing through the transmissive region; a power management controller connected with the backlight device, wherein the power management controller controls an intensity of the backlight; and at least one photodetector located on the display panel outside the viewing area, wherein the photodetector detects an intensity of ambient light around the display panel, and then provides a corresponding signal to the power management controller to control the intensity of the backlight; wherein, by the power management controller based on the corresponding signal, the intensity of the backlight automatically becomes greater when the intensity of the ambient light becomes lower, and the intensity of the backlight automatically becomes lower when the intensity of the ambient light becomes greater, maintaining a total amount of a part of the ambient light reflected from the reflective region and a part of the backlight passing through the transmissive region at a desired level, and the backlight provided by the backlight device impinges on the display panel without passing an element between the display panel and the backlight device.