US 12,256,617 B2
Display panel and display device
Ai Xiao, Wuhan (CN)
Assigned to WuHan TianMa Micro-electronics CO., LTD., Wuhan (CN)
Filed by WuHan TianMa Micro-electronics CO., LTD., Wuhan (CN)
Filed on Jun. 23, 2021, as Appl. No. 17/356,425.
Claims priority of application No. 202110177248.5 (CN), filed on Feb. 9, 2021.
Prior Publication US 2021/0320157 A1, Oct. 14, 2021
Int. Cl. H10K 59/35 (2023.01); G09G 3/3225 (2016.01); H10K 50/818 (2023.01); H10K 50/86 (2023.01)
CPC H10K 59/353 (2023.02) [G09G 3/3225 (2013.01); H10K 50/818 (2023.02); H10K 50/865 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
an array layer located on the substrate and comprising a plurality of sub-pixels, wherein one sub-pixel of the a plurality of sub-pixels comprises a pixel drive circuit and a light-emitting element, the light-emitting element of the sub-pixel comprises an anode electrically connected to at least two trace lead-out ends, and at least two trace lead-out ends comprise a first trace lead-out end and at least one second trace lead-out end; the first trace lead-out end is connected to the pixel drive circuit by a corresponding connection trace; and
a black matrix located at a side of the array layer facing away from the substrate and having a plurality of openings, wherein the anode of the light-emitting element of the sub-pixel is exposed in one of the plurality of openings;
wherein a portion of the at least two trace lead-out end that is exposed in each of the plurality of openings is a connection end, the plurality of sub-pixels comprises a first sub-pixel and a second sub-pixel that have different light-emitting colors, wherein the connection end in the first sub-pixel is a first connection end, and the connection ends in the second sub-pixel is a second connection end, wherein the first sub-pixel comprises at least two first connection ends, and the second sub-pixel comprises at least two second connection ends, wherein extension directions of respective first connection ends are respectively parallel to an extension direction of one second connection end, and the first connection end and the second connection end have parallel extension directions, and the first connection end has equal angles and proportional sides relative to corresponding angles and sides of the second connection end;
wherein the at least one first connection end and the at least one second connection end have one-to-one correspondence; and an extension direction of an ith first connection end is parallel to an extension direction of an ith second connection end, and the ith first connection end has equal angles and proportional sides relative to corresponding angles and sides of the ith second connection end;
wherein the anode has a rectangular or an n-regular polygonal shape, and n≥5;
the anode comprises a first side, the first sides of anodes in respective sub-pixels are parallel to each other, the first side has a first endpoint and a second endpoint, and directions from the first endpoint to the second endpoint in the sub-pixels are the same;
an xth first connection end protrudes from the first side of the anode, a midpoint of a portion of the first side that overlaps with an edge of the xth first connection end is a first end lead-out point, a distance between the first end lead-out point and the first endpoint is a first distance, and a ratio of the first distance to a length of the first side is a first ratio;
an xth second connection end protrudes from the first side of the anode, the midpoint of the portion of the first side that overlaps with an edge of the xth second connection end is a second end lead-out point, a distance between the second end lead-out point and the first endpoint is a second distance, and a ratio of the second distance to the length of the first side is a second ratio; and
the first ratio corresponding to the xth first connection end is equal to the second ratio corresponding to the xth second connection end, and a value of x is one or more selected from the number of the at least one first connection end or the number of the at least one second connection end.
 
13. A display panel, comprising:
a substrate;
an array layer located on the substrate and comprising a plurality of sub-pixels, wherein one sub-pixel of the a plurality of sub-pixels comprises a pixel drive circuit and a light-emitting element, the light-emitting element of the sub-pixel comprises an anode electrically connected to at least two trace lead-out ends, and at least two trace lead-out ends comprise a first trace lead-out end and at least one second trace lead-out end; the first trace lead-out end is connected to the pixel drive circuit by a corresponding connection trace; and
a black matrix located at a side of the array layer facing away from the substrate and having a plurality of openings, wherein the anode of the light-emitting element of the sub-pixel is exposed in one of the plurality of openings; wherein a portion of the at least two trace lead-out ends that is exposed in each of the plurality of openings is a connection end, the plurality of sub-pixels comprises a first sub-pixel and a second sub-pixel that have different light-emitting colors, wherein the connection end in the first sub-pixel is a first connection end, and the connection ends in the second sub-pixel is a second connection end, wherein the first sub-pixel comprises at least two first connection ends, and the second sub-pixel comprises at least two second connection ends, wherein extension directions of respective first connection ends are respectively parallel to an extension direction of one second connection end, and the first connection end and the second connection end have parallel extension directions, and the first connection end has equal angles and proportional sides relative to corresponding angles and sides of the second connection end;
wherein the anode and M connection ends connected to the anode constitute a reflective electrode; and a pattern of the reflective electrode of the first sub-pixel, has equal angles and proportional sides relative to corresponding angles and sides of a pattern of the reflective electrode of the second sub-pixel;
wherein the array layer further comprises a planarization layer located between the pixel drive circuit and the light-emitting element, and the planarization layer is provided with a through hole through which the connection trace is electrically connected to the pixel drive circuit; and
a line width of the first connection end is smaller than a line width of the second connection end, and a distance between the first connection end and the through hole corresponding to the first connection end is smaller than a distance between the second connection end and the through hole corresponding to the second connection end.