US 12,334,005 B2
Display device and Mura compensation method thereof
Zi-Yi Lian, Miaoli County (TW); and Yen-Tao Liao, Hsinchu (TW)
Assigned to Novatek Microelectronics Corp., Hsinchu (TW)
Filed by Novatek Microelectronics Corp., Hsinchu (TW)
Filed on Jul. 31, 2023, as Appl. No. 18/361,937.
Prior Publication US 2025/0046240 A1, Feb. 6, 2025
Int. Cl. G09G 3/3208 (2016.01)
CPC G09G 3/3208 (2013.01) [G09G 2300/0819 (2013.01); G09G 2320/0233 (2013.01); G09G 2360/16 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel; and
a Mura compensation circuit, coupled to the display panel, wherein the Mura compensation circuit defines a first compensation area in the display panel based on a first curve equation corresponding to a current frame rate of the display panel, the Mura compensation circuit calculates at least one first compensation weight in the first compensation area based on the current frame rate and the first curve equation, the Mura compensation circuit uses the at least one first compensation weight to compensate at least one pixel data in the first compensation area so as to generate a compensated pixel data frame, and the Mura compensation circuit provides the compensated pixel data frame to the display panel for displaying images,
wherein in response to the current frame rate changing from an original frame rate to a new frame rate, the Mura compensation circuit obtains a new coefficient and a new index value corresponding to the new frame rate from a look-up table, the Mura compensation circuit updates the first curve equation based on the new coefficient, the Mura compensation circuit uses the new index value and the first curve equation to calculate the at least one first compensation weight in the first compensation area, and the Mura compensation circuit uses the at least one first compensation weight to compensate the at least one pixel data in the first compensation area.