Patent ID: 11915663
Assignee: HKC CORPORATION LIMITED
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. A display device comprising a display panel and a driving module electrically coupled with the display panel, wherein the display panel comprises a common voltage driving circuit, wherein the common voltage driving circuit comprises a plurality of scan lines and a plurality of common-voltage signal lines, and further comprises a plurality of common electrode units arranged in an array, wherein the plurality of scan lines extend in a first direction and are arranged at intervals in sequence in a second direction perpendicular to the first direction, the plurality of common-voltage signal lines extend in the second direction and are arranged at intervals in sequence in the first direction, the plurality of common electrode units are disposed at intersections of the plurality of scan lines and the plurality of common-voltage signal lines respectively, common electrode units in a same column are all electrically coupled with a same common-voltage signal line, common electrode units in a same row are all electrically coupled with a same second scan line, and the plurality of common electrode units are configured to independently control a common electrode voltage of a display device in units of sub-pixels;
the plurality of common electrode units each comprise a driving transistor, a capacitor, a reference electrode, and a common electrode, wherein the driving transistor has a gate for receiving a scan signal, a source for receiving a common voltage signal, and a drain electrically coupled with a first end of the capacitor and the common electrode, a second end of the capacitor is electrically coupled with the reference electrode, and the capacitor is configured to maintain a voltage of the common electrode; and
the plurality of common electrode units each further comprise an insulating layer, a channel, and a passivation layer, wherein the insulating layer is stacked on a base substrate, and covers the gate and the reference electrode which are on the base substrate, the channel is disposed at one side of the insulating layer away from the gate of the driving transistor, a position of the channel corresponds to a position of the gate, and the passivation layer is stacked on the drain, the source, and the channel, and covers part of the insulating layer corresponding to the reference electrode.