US 12,266,311 B2
Compensation method, system, device and medium of IR drop of display panel
Qibin Feng, Hefei (CN); Hongtao Ren, Hefei (CN); Chen Zheng, Hefei (CN); Guoqiang Lv, Hefei (CN); and Zi Wang, Hefei (CN)
Assigned to Hefei University of Technology, Hefei (CN)
Filed by Hefei University of Technology, Hefei (CN)
Filed on Dec. 18, 2023, as Appl. No. 18/542,774.
Claims priority of application No. 202311094908.9 (CN), filed on Aug. 28, 2023.
Prior Publication US 2025/0078761 A1, Mar. 6, 2025
Int. Cl. G09G 3/3258 (2016.01); G09G 3/3233 (2016.01)
CPC G09G 3/3258 (2013.01) [G09G 3/3233 (2013.01); G09G 2320/0223 (2013.01); G09G 2320/0233 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A compensation method of a IR Drop of a display panel, comprising:
constructing an IR Drop model of the display panel based on a distribution of equivalent resistances between adjacent pixels in the display panel;
constructing a vector matrix equation of the IR Drop according to the IR Drop model;
performing an equivalent processing on the vector matrix equation of the IR Drop to form a plurality of equivalent sub-matrices;
iteratively solving IR Drop data of each node in each equivalent sub-matrix; and
performing a voltage compensation on each pixel in the display panel according to the IR Drop data;
wherein, a conductance value g of each node in the equivalent sub-matrix satisfies a following formula:

OG Complex Work Unit Math
wherein, RTD represents an equivalent resistance of a horizontal power supply metal wire in the node, RMD represents an equivalent resistance of a longitudinal power supply metal wire in the node, and REL represents an equivalent resistance of the pixel in the node.