Abstract: A method for adjusting frame brightness is provided. First, an image data in YUV format is received. Next, a dimming curve is determined according to an overall average pixel level value of the image data and a number distribution of pixel level values. Then, the image data is divided into a plurality of blocks, and a block average pixel level value of pixels in each of the blocks is calculated. Thereafter, the block average pixel level values are substituted into the dimming curve to obtain a plurality of block brightness values. Afterward, the image data is outputted and backlight sources corresponding to each of the blocks are driven to provide the block brightness values to each of the blocks for displaying a frame.

Abstract: A color adjusting method for a display is provided. The color adjusting method includes establishing a primary color adjusting mode in an on-screen-display (OSD) menu of the display, wherein the primary color adjusting mode at least has one of red, green and blue color adjusting mode items; providing a standard test video signal to the display so as to make that the display displays a standard test pattern; and when one of the red, green, blue color adjusting mode items under the primary color adjusting mode is turned on, attenuating (green and blue)/(red and blue)/(red and green) components in the standard test pattern, so as to make that the display only displays one of the red, green, blue components in the standard test pattern, and thus adjusting one of the red, green, blue colors by users.

Abstract: A method for increasing a frame contrast ratio is suitable for a liquid crystal display (LCD) having a direct-type light emitting diode (LED) backlight module. The method includes establishing a local dimming demo mode in an on-screen-display (OSD) menu of the LCD, so as to determine to turn on or turn off a local dimming control function. Besides, according to this method, when the local dimming demo mode is turned on, the local dimming control function is continuously and repeatedly turned on or turned off in the direct-type LED backlight module in a time-division manner based on image contents in the whole frame of the LCD, so as to increase the frame contrast ratio of the LCD.