Patent ID: 11925076
Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 13:
14. A display panel, comprising:
a base substrate;
a plurality of sub-pixels arranged in an array, a power bus, a plurality of first power lines and a plurality of second power lines which are located at a side of the base substrate, wherein the plurality of first power lines extend along a column direction and the plurality of second power lines extend along a row direction, wherein each of the plurality of first power lines is electrically connected to the plurality of sub-pixels arranged along the column direction, wherein the plurality of first power lines and the plurality of second power lines have perpendicular projections respectively on a top surface of the base substrate, and wherein the plurality of first power lines are electrically connected to the plurality of second power lines in overlapping regions of the perpendicular projections; and
a plurality of connection units, wherein a first end of each of the plurality of connection units is electrically connected to the power bus, wherein a second end of each of the plurality of connection units is electrically connected to either one of the plurality of first power lines or one of the plurality of second power lines, and wherein vertical projections of the second ends of the plurality of connection units on the top surface of the base substrate do not overlap one another;
wherein electrical resistances of the plurality of connection units are substantially the same;
wherein the display panel further comprises: a first metal layer, a first insulating layer, a second metal layer, a second insulating layer and a third metal layer which are disposed in sequence on the top surface of base substrate;
wherein the plurality of second power lines is disposed in the first metal layer;
wherein the power bus and the plurality of first power lines are disposed in the second metal layer;
wherein the plurality of connection units is disposed in the third metal layer;
wherein the first end of each of the plurality of connection units is electrically connected to the power bus through a first via, and the second end of each of the plurality of connection units is electrically connected to the one of the plurality of first power lines or the one of the plurality of second power lines through one of second vias;
the display panel further comprises: a display region and a non-display region, wherein the power bus is located in the non-display region, and the power bus encircles the display region;
wherein the third metal layer comprises a patterned structure, the patterned structure comprises at least one first branch of stages 1 to N, the first branch of stage 1 comprises two third connection sub-units, and wherein each first branch of each of stages 2 to N comprises two of fourth connection sub-units with opposite extension directions and having a same length;
wherein first ends of the two third connection sub-unit are electrically connected to opposite sides of the power bus through the first vias respectively, and a second end of each of the two third connection sub-units is electrically connected to first ends of two fourth connection sub-units of a respective first branch of stage 2 separately;
wherein a second end of each of two fourth connection sub-units of each first branch of stage i is electrically connected to first ends of two fourth connection sub-units of a respective first branch of stage i+1 separately;
wherein a second end of each of two fourth connection sub-unit of the first branch of stage N−1 is electrically connected to the first ends of two fourth connection sub-units of a respective first branch of stage N separately, and a second end of each of the two fourth connection sub-units of the respective first branch of stage N is electrically connected to a respective one of the plurality of first power lines or a respective one of the plurality of second power lines through one of the second vias;
wherein N and i are both positive integers, and N≥3 2≤i≤N−1; and
wherein each of the plurality of connection units comprises one third connection sub-unit and fourth connection sub-units in stages 2 to N, and wherein a number of fourth connection sub-units in each stage is 1.