Display device
A display device includes an auto current limiter (ACL) circuit and a luminance control circuit. The ACL circuit acquires a first parameter on the basis of luminance-related data of input image data, and then acquires a second parameter by applying a luminance control parameter from the luminance control circuit to the first parameter. The ACL circuit corrects the input image data by a second correction function acquired from the second parameter.
1. A display device comprising:
a display panel;
a gray-level correction circuit; and
a luminance control circuit which controls luminance of the display panel, wherein
the gray-level correction circuit
acquires a first parameter for generating a first correction function on the basis of luminance-related data of input image data,
corrects the first parameter on the basis of a luminance control parameter related to control of the luminance of the display panel from the luminance control circuit,
acquires a second parameter for generating a second correction function, and
corrects a gray level of the input image data on the basis of the second correction function,
wherein the luminance-related data of the input image data is a lighting rate which is calculated on the basis of a value obtained by dividing a frame luminance, which is a sum of luminances of all of pixels in the display panel based on the input image data for one frame, by a product of the number of all the pixels in the display panel and a gray-level value indicating maximum luminance.
2. The display device according to claim 1 , wherein the luminance control parameter includes a PWM parameter which is supplied from the luminance control circuit to a PWM control circuit to control the luminance of the display panel.
3. The display device according to claim 1 , wherein the luminance control parameter includes a gamma voltage setup value which is supplied from the luminance control circuit to a gamma circuit to control the luminance of the display panel.
4. The display device according to claim 1 , wherein the luminance control circuit corrects the gray level of the input image data if a value of the luminance control parameter is a value which makes a luminance setting for the display panel not less than a prescribed value.