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

Claim 7:
8. A display panel comprising a common electrode, a common voltage compensation device, 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, the plurality of common electrode lines being arranged in a column direction and each extending in a row direction, and the common voltage compensation device comprising a common voltage compensation unit, a voltage feedback line, and at least one voltage compensation line,
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,
the common voltage compensation unit is configured to provide a common voltage to the common electrode through the plurality of common electrode lines, detect 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, and provide a compensation voltage to at least one 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,
one end of the voltage feedback line is coupled to the common voltage compensation unit, and another end of the voltage feedback line is coupled to only the one common electrode line, and the voltage feedback line is configured to acquire the actual common voltage on only the one common electrode line coupled to the voltage feedback line and transmit the acquired actual common voltage to the common voltage compensation unit as the detected actual common voltage,
one end of the at least one voltage compensation line is coupled to the common voltage compensation unit, and another end of the at least one voltage compensation line is coupled to the at least one of the plurality of common electrode lines, and the at least one voltage compensation line is configured to receive the compensation voltage from the common voltage compensation unit and transmit the compensation voltage to the common electrode through the at least one common electrode line to compensate the common voltage of the common electrode.