Method and device for controlling brightness of display element

A display device, comprising:

• a display module;
• an image signal receiver for receiving an image signal;
• and
• an image processing unit, comprising:
• means for referring to a scan-frequency list according to a horizontal scan frequency and a vertical scan frequency of the image signal, so as to determine a display mode of the image signal, setting brightness of the display module to a first brightness upon determination that the display mode of the image signal is a first mode, and setting brightness of the display module to a second brightness upon determination that the display mode of the image signal is a second mode, wherein the display module is brighter with the second brightness than with the first brightness.

A display method, comprising the steps of:

• displaying an image on a display module;
• determining whether a scan mode of the image is an interlace scan mode;
• and
• increasing brightness of the display module upon determination that the scan mode of the image is the interlace scan mode.

A display device, comprising:

• a display module;
• an image signal receiver for receiving an image signal;
• and
• an image processing unit, comprising:
• means for determining whether a scan mode of the image signal is an interlace scan mode and increasing brightness of the display module upon determination that the scan mode of the image signal is the interlace scan mode.