Display device and luminance control method thereof

摘要

A display device and a method for controlling a luminance of the display device are disclosed. The display device includes an average picture level (APL) calculator which calculates an APL of an input image and outputs the APL of the input image and an APL curve data, a luminance adjuster which adjusts the APL curve data and includes at least two luminance adjusting units which are enabled in response to a user input through a user interface, a data modulator for modulating data of the input image using a luminance defined in the APL curve data adjusted by the luminance adjuster, and a display panel driving circuit which writes data from the data modulator on a display panel and reproduces the input image on the display panel.

主权项

1. A display device comprising:
an average picture level (APL) calculator configured to calculate an APL of an input image and output the APL of the input image and an APL curve data; a luminance adjuster including at least two luminance adjusting units, which are enabled in response to a user input through a user interface, the luminance adjuster adjusting the APL curve data; a data modulator configured to modulate data of the input image using a luminance defined in the APL curve data adjusted by the luminance adjuster; and a display panel driving circuit configured to write data from the data modulator on a display panel and reproduce the input image on the display panel, wherein the luminance adjuster includes:
a first luminance adjusting unit configured to generate a first weight value, which is set based on an input luminance input through a user interface;a first multiplier configured to multiply the APL curve data by the first weight value;a second luminance adjusting unit configured to decide a motion of the input image and generate a second weight value, which reduces a maximum luminance of the display image as a motion of the input image increases; anda second multiplier configured to multiply the APL curve data received from the first multiplier by the second weight value.