Patent ID: 9001023
Filing Date: 2015-04-07
Classification: G09G

Abstract:
1. A liquid crystal display apparatus comprising: a liquid crystal display panel; a backlight for illuminating the liquid crystal display panel from a back side thereof; a control portion for controlling the liquid crystal display panel and the backlight; a backlight luminance detection portion for detecting light emission luminance of the backlight on the back side of the liquid crystal display panel; and an ambient illuminance detection portion for detecting ambient illuminance of the liquid crystal display apparatus, wherein when ambient illuminance detected by the ambient illuminance detection portion is higher than a predetermined threshold, the backlight luminance detection portion detects light emission luminance of the backlight in a state where an optical shutter of the liquid crystal display panel is closed, and the control portion adjusts light emission luminance of the backlight according to the light emission luminance detected by the backlight luminance detection portion, and when ambient illuminance detected by the ambient illuminance detection portion is not higher than a predetermined threshold, the backlight luminance detection portion does not detect light emission luminance of the backlight.