US 12,245,455 B2
Display substrate comprising a first electrode layer including a reflective layer, an insulating layer and a transparent conductive layer and method for manufacturing and display apparatus having the same
Li Liu, Beijing (CN); Pengcheng Lu, Beijing (CN); Kui Zhang, Beijing (CN); Yunlong Li, Beijing (CN); Shengji Yang, Beijing (CN); Kuanta Huang, Beijing (CN); Xiaochuan Chen, Beijing (CN); and Dacheng Zhang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/641,316
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jan. 8, 2021, PCT No. PCT/CN2021/070863
§ 371(c)(1), (2) Date Mar. 8, 2022,
PCT Pub. No. WO2021/139769, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 202020046936.9 (CN), filed on Jan. 9, 2020.
Prior Publication US 2022/0302418 A1, Sep. 22, 2022
Int. Cl. H10K 50/13 (2023.01); H10K 50/844 (2023.01); H10K 50/856 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01); H10K 102/10 (2023.01)
CPC H10K 50/856 (2023.02) [H10K 50/13 (2023.02); H10K 50/844 (2023.02); H10K 71/00 (2023.02); H10K 2102/101 (2023.02); H10K 2102/351 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display substrate having a plurality of sub-pixel regions, the plurality of sub-pixel regions including at least one red sub-pixel region, at least one green sub-pixel region, and at least one blue sub-pixel region; the display substrate comprising:
a substrate;
a light-emitting device layer disposed on a side of the substrate; the light-emitting device layer including a first electrode layer, a light-emitting functional layer, and a second electrode layer that are sequentially stacked in a direction away from the substrate, and the first electrode layer including a reflective layer, an insulating layer, and a transparent conductive layer that are sequentially stacked in the direction away from the substrate, wherein
vertical distances from portions, located in the plurality of sub-pixel regions, of a surface of the reflective layer away from the substrate to the substrate are all equal, and vertical distances from portions, located in the plurality of sub-pixel regions, of a surface of the insulating layer away from the substrate to the second electrode layer are all equal;
in a red sub-pixel region, a thickness of a first portion of the insulating layer located between the reflective layer and the transparent conductive layer is within a range of about 1000 Å to about 2500 Å; in a green sub-pixel region, a thickness of a second portion of the insulating layer located between the reflective layer and the transparent conductive layer is within a range of about 500 Å to about 2000 Å; in a blue sub-pixel region, a thickness of a third portion of the insulating layer located between the reflective layer and the transparent conductive layer is within a range of about 1500 Å to about 3000 Å;
the reflective layer includes a plurality of reflective units that are spaced apart from each other, and the transparent conductive layer includes a plurality of transparent conductive units that are spaced apart from each other; and
the transparent conductive units and the reflective units are in one-to-one correspondence, a transparent conductive unit and a corresponding reflective unit are electrically connected, and the transparent conductive unit and the reflective unit that are correspondingly electrically connected are located in a same sub-pixel region; in the same sub-pixel region, an orthogonal projection of the reflective unit on the substrate is within a range of an orthographic projection of a corresponding transparent conductive unit on the substrate; wherein
the transparent conductive unit includes a flat surface in a middle and side faces on peripheries, and an included angle between the flat surface and a side face is an obtuse angle; and
the orthogonal projection of the reflective unit on the substrate substantially overlaps with an orthogonal projection of the flat surface on the substrate.