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

Claim 0:
1. 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, 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;
wherein 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 partially surrounds the display region;
wherein the third metal layer comprises a patterned structure, wherein the patterned structure comprises at least one first branch of stages 1 to N, a first branch of stage 1 comprises one first connection sub-unit, and each first branch of each of stages 2 to N comprises two second connection sub-units with opposite extension directions and having a same length;
wherein a first end of the one first connection sub-unit is electrically connected to the power bus through the first via, and a second end of the one first connection sub-unit is electrically connected to first ends of two second connection sub-units of the first branch of stage 2 separately;
wherein a second end of each of two second connection sub-units of each first branch of stage i is electrically connected to first ends of two second connection sub-units of a respective first branch of stage i+1 separately;
wherein a second end of each of two second connection sub-units of the first branch of stage N−1 is electrically connected to first ends of two second connection sub-units of the respective first branch of stage N separately, and a second end of each of the two second connection sub-units of the respective first branch of stage N is electrically connected to one of the plurality of first power lines or 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 the one first connection sub-unit and second connection sub-units in stages 2 to N, and a number of second connection sub-units in each stage is 1.