US 11,948,512 B2
Display substrate and display device
Tinghua Shang, Beijing (CN); Yang Zhou, Beijing (CN); Haigang Qing, Beijing (CN); Linhong Han, Beijing (CN); Ling Shi, Beijing (CN); and Yao Huang, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on May 11, 2023, as Appl. No. 18/315,556.
Application 18/315,556 is a continuation of application No. 17/828,211, filed on May 31, 2022, granted, now 11,776,479.
Application 17/828,211 is a continuation of application No. 17/272,777, granted, now 11,423,840, issued on Aug. 23, 2022, previously published as PCT/CN2020/106413, filed on Jul. 31, 2020.
Claims priority of application No. PCT/CN2019/098708 (WO), filed on Jul. 31, 2019; and application No. PCT/CN2019/098731 (WO), filed on Jul. 31, 2019.
Prior Publication US 2023/0282169 A1, Sep. 7, 2023
Int. Cl. G09G 3/3258 (2016.01); G09G 3/20 (2006.01); G09G 3/3266 (2016.01); G09G 3/3291 (2016.01); H10K 50/814 (2023.01); H10K 59/121 (2023.01); H10K 59/124 (2023.01); H10K 59/131 (2023.01); H10K 59/35 (2023.01)
CPC G09G 3/3258 (2013.01) [G09G 3/2003 (2013.01); G09G 3/3266 (2013.01); G09G 3/3291 (2013.01); H10K 50/814 (2023.02); H10K 59/1213 (2023.02); H10K 59/124 (2023.02); H10K 59/131 (2023.02); H10K 59/353 (2023.02); G09G 2300/0426 (2013.01); G09G 2300/0443 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a base substrate;
a plurality of sub-pixels on the base substrate, wherein each of the plurality of sub-pixels comprises a light emitting element and a pixel circuit for driving the light emitting element, the light emitting element comprises a first electrode, a light emitting layer and a second electrode which are sequentially stacked in a direction close to the base substrate; each second electrode of the light emitting element comprises a main body electrode and a connecting electrode, the plurality of sub-pixels comprise a plurality of first color sub-pixels and a plurality of second color sub-pixels, each of the first color sub-pixels comprises a first effective light emitting region, a shape of the main body electrode of the first color sub-pixel is the same as a shape of the first effective light emitting region, and an orthographic projection of the first effective light emitting region on the base substrate is within an orthographic projection of the main body electrode on the base substrate; each of the second color sub-pixels comprises a second effective light emitting region, a shape of the main body electrode of the second color sub-pixel is the same as a shape of the second effective light emitting region, and an orthographic projection of the second effective light emitting region on the base substrate is within an orthographic projection of the main body electrode on the base substrate;
a plurality of data lines, located at a side of the second electrode of the light emitting element facing the base substrate, wherein each of the plurality of data lines extends in a first direction, and the main body electrode of a same first color sub-pixel is a continuous electrode;
a planarization layer, located between a film layer where the plurality of data lines are located and a film layer where the second electrode of the light emitting element is located; and
an interlayer insulating layer, located between the film layer where the plurality of data lines are located and the base substrate,
wherein each of the plurality of sub-pixels comprises a first connecting portion arranged in the same layer as the plurality of data lines,
in the first color sub-pixel, the connecting electrode is connected with the first connecting portion through a first via hole penetrating through the planarization layer, and the first connecting portion is electrically connected with the pixel circuit through a first connecting hole penetrating through the interlayer insulating layer; and in a direction perpendicular to the base substrate, the first via hole and the first connecting hole are not overlapped with the main body electrode, and orthographic projections of the first via hole and the first connection hole on a first straight line extending in a first direction are overlapped with each other;
in the second color sub-pixel, the connecting electrode is connected with the first connecting portion through a second via hole penetrating through the planarization layer, the first connecting portion is electrically connected with the pixel circuit through a second connecting hole penetrating through the interlayer insulating layer, an orthographic projection of the first via hole on the first straight line is not overlapped with an orthographic projection of the second via hole on the first straight line, and the orthographic projection of the first via hole on the first straight line is overlapped with an orthographic projection of the second electrode of the second color sub-pixel on the first straight line;
the plurality of sub-pixels comprise a plurality of sub-pixel pairs, each sub-pixel pair comprises a first pixel block and a second pixel block, a shape of the second electrode of the second pixel block is different from that of the second electrode of the first pixel block.