Display device and television receiver
AssigneeSharp Kabushiki Kaisha
InventorYoshiki Takata
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Abstract
A display device 10 of the present invention includes a display panel 10, a fluorescent lamp 17, a brightness controller 40 and a temperature sensor TS. The display panel 10 has a grayscale display function. The fluorescent lamp 17 emits light toward the display panel 10. The brightness controller 40 controls display brightness by adjusting the grayscale of the display panel 10 and the light emission of the fluorescent lamp 17. The temperature sensor TS measures a temperature of the display device 10. The brightness controller 40 selects a way of the brightness control from the display panel 10 grayscale adjustment, the fluorescent lamp 17 emission adjustment and a combination of both based on the temperature of the display device 10 measured by the temperature sensor TS.
Claims10
A display device comprising:
- a display panel having a grayscale display function;
- a fluorescent lamp configured to emit light toward the display panel;
- a brightness controller configured to control display brightness by adjusting grayscale of the display panel and light emission of the fluorescent lamp;
- and
- a temperature sensor configured to measure a temperature of the display device,
- wherein the brightness controller selects a way of the display brightness control from the display panel grayscale adjustment, the fluorescent lamp emission adjustment and a combination of both based on the temperature of the display device measured by the temperature sensor.
The display device according to claim 2, wherein:
- the reference temperature includes a first reference temperature and a second reference temperature that is higher than the first reference temperature;
- the brightness controller performs the brightness control by the display panel grayscale adjustment when the temperature of the display device is lower than the first reference temperature;
- the brightness controller performs the brightness control by a combination of the display panel grayscale adjustment and the fluorescent lamp emission adjustment when the temperature of the display device is in a range from the first reference temperature to the second reference temperature;
- and
- the brightness controller performs the brightness control by the fluorescent lamp emission adjustment when the temperature of the display device is equal to the second reference temperature or higher.
Dependencies are inferred from the claim text.