US 12,462,743 B2
Display device
Nam Jae Lim, Yongin-si (KR); Seong Jun Kim, Yongin-si (KR); Da Ye Moon, Yongin-si (KR); Kyoung Ho Lim, Yongin-si (KR); and Sang Myeon Han, Yongin-si (KR)
Assigned to Samsung Display Co., LTD., Gyeonggi-do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jun. 25, 2024, as Appl. No. 18/753,391.
Claims priority of application No. 10-2023-0158131 (KR), filed on Nov. 15, 2023.
Prior Publication US 2025/0157398 A1, May 15, 2025
Int. Cl. G09G 3/30 (2006.01); G09G 3/32 (2016.01); G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2320/0247 (2013.01); G09G 2320/103 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
pixels arranged in a display area of a display panel; and
a display driver determining whether image data indicates still image characteristics or moving image characteristics and controlling a supply timing of data voltages and pixel driving control signals supplied to the pixels based on a determination result, wherein
the display driver selectively adjusts a driving frequency for driving the pixels and a level of a high-potential voltage supplied to the pixels based on a result of grayscale analysis of the image data, and
the display driver comprises:
a maximum luminance detection part sorting an image data input from an outside in units of at least one frame and detecting minimum and maximum grayscale values and minimum and maximum luminance values of image data of at least one frame;
a load detection part comparing and analyzing grayscale values or luminance values of the image data of at least one frame and detecting load information of pixels of each preset image display block and load information of all of pixels of at least one frame;
an image analysis part analyzing the grayscale values and the luminance values of the image data of at least one frame using a histogram and detecting grayscale distribution information of each preset image display block and grayscale distribution information of at least one frame; and
a driving frequency setting part varying and setting the driving frequency of the pixels of at least one frame in units of at least one frame period according to ranges comprising the minimum and maximum grayscale values and the minimum and maximum luminance values of the image data of at least one frame.