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

Claim 5:
6. 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 line 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 obtaining the compensation voltage according to the detected actual common voltage and transmitting the compensation voltage to at least one of a first compensated common electrode line, a second compensated common electrode line, and a third compensated common electrode line, and the at least one of the first compensated common electrode line, the second compensated common electrode line, and the third compensated common electrode line transmitting the compensation voltage to the common electrode,

the first compensated common electrode line is a common electrode line from a first common electrode line to an N3-th common electrode line, where N3 is a value rounded down from n/6,
the second compensated common electrode line is a common electrode line from an N4-th common electrode line to a common electrode line closest to the common voltage compensation unit, where N4 is a value rounded down from 3*n/4, and
the third compensated common electrode line is an N5-th common electrode line, where N5 is a value rounded down from n/2.