US 12,349,463 B2
Display panel, manufacturing method thereof, and display device
Muxin Di, Beijing (CN); Zhiwei Liang, Beijing (CN); Yingwei Liu, Beijing (CN); Ke Wang, Beijing (CN); Zhanfeng Cao, Beijing (CN); and Guangcai Yuan, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/265,228
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 19, 2020, PCT No. PCT/CN2020/091119
§ 371(c)(1), (2) Date Feb. 2, 2021,
PCT Pub. No. WO2020/233576, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 201910422202.8 (CN), filed on May 21, 2019.
Prior Publication US 2021/0305283 A1, Sep. 30, 2021
Int. Cl. H10D 86/60 (2025.01); H01L 23/498 (2006.01); H01L 25/075 (2006.01); H10D 30/67 (2025.01); H10D 86/01 (2025.01); H10D 86/40 (2025.01); H10H 20/01 (2025.01); H10H 20/857 (2025.01)
CPC H10D 86/60 (2025.01) [H01L 23/4985 (2013.01); H01L 25/0753 (2013.01); H10D 30/6723 (2025.01); H10D 86/0214 (2025.01); H10D 86/411 (2025.01); H10D 86/441 (2025.01); H10H 20/857 (2025.01); H10H 20/0364 (2025.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a flexible substrate, comprising a plurality of connection-via pairs, wherein each of the connection-via pairs comprises two connection vias each penetrating through the flexible substrate;
connection portions, located on a side of the flexible substrate and corresponding one-to-one to the connection vias, wherein each of the connection portions comprises:
a first connection end completely in the corresponding connection via;
a second connection end on a surface of a side of the flexible substrate: wherein the second connection end comprises two parts on both sides of the corresponding connection via; and
a third connection end completely in the corresponding connection via;
wherein the first connection end connects to the second connection end through the third connection end, orthographic projections of the first connection end, the second connection end, and the third connection end on the flexible substrate do not overlap with each other, the third connection end cover a side wall of the flexible substrate forming the corresponding connection via, the first connection end does not overlap with the side wall of the flexible substrate forming the corresponding connection via, a thickness of the first connection end is less than a via depth of the corresponding connection via in the flexible substrate, and a surface of the first connection end facing away from the second connection end is flush with a surface of the flexible substrate facing away from the second connection end:
a leveling layer, located on a side of the connection portions away from the flexible substrate;
driving circuits, located on a side of the leveling layer away from the flexible substrate and corresponding one-to-one to the connection-via pairs, wherein each of the driving circuits is electrically connected to second connection ends of two of the connection portions separately;
a driving chip, located on a side of the driving circuits away from the flexible substrate, wherein the driving chip is electrically connected to the driving circuit; and
micro light emitting diodes (LEDs), located on a side of the flexible substrate away from the driving circuits and corresponding one-to-one to the connection-via pairs, wherein each of the micro LEDs is electrically connected to first connection ends of two of the connection portions separately.