Patent ID: 11893955
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A common voltage compensation method for a display panel,
the display panel comprising a common electrode, a common voltage compensation unit, and a plurality of common electrode lines coupled to the common electrode, the common electrode comprising a plurality of sub-electrodes arranged in rows and columns, and the plurality of common electrode lines being arranged in a column direction and each extending in a row direction,
wherein the plurality of common electrode lines are a first common electrode line to an n-th common electrode line sequentially arranged in the column direction, where n is an integer greater than 8,
the common voltage compensation unit is at one side of the display panel, such that from k=2 to k=n, a k-th common electrode line among the first common electrode line to the n-th common electrode line is closer to the common voltage compensation unit than a (k−1)-th common electrode line among the first common electrode line to the n-th common electrode line, where n≥k≥2 and k is an integer, and
the method comprises:
the common voltage compensation unit providing a common voltage to the common electrode through the plurality of common electrode lines;
the common voltage compensation unit detecting an actual common voltage on only one common electrode line of an N1-th common electrode line to an N2-th common electrode lines of the plurality of common electrode lines, where N1 is a value rounded down from n/8, and N2 is a value rounded down from n/4; and
the common voltage compensation unit providing, according to the detected actual common voltage, a compensation voltage to the common electrode through at least one of the plurality of common electrode lines to compensate the common voltage of the common electrode.