US 12,446,376 B2
Display panel and display device
Yang Zeng, Shanghai (CN)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Oct. 14, 2021, as Appl. No. 17/450,955.
Claims priority of application No. 202110770619.0 (CN), filed on Jul. 7, 2021.
Prior Publication US 2023/0011597 A1, Jan. 12, 2023
Int. Cl. H10H 20/857 (2025.01); G06V 40/13 (2022.01); H10H 20/831 (2025.01); H10H 29/14 (2025.01)
CPC H10H 20/857 (2025.01) [G06V 40/13 (2022.01); H10H 20/831 (2025.01); H10H 29/142 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a first substrate;
a first metal layer, disposed on a side of the first substrate and including a first electrode;
a first insulating layer, disposed on a side of the first metal layer away from the first substrate, wherein the first insulating layer contains a first opening, and the first opening exposes at least a portion of the first electrode; and
a second metal layer, disposed on a side of the first insulating layer away from the first substrate, wherein the second metal layer includes a light-shielding portion and a first electrical connection portion that are insulated from each other, the light-shielding portion contains a second opening, the first electrical connection portion is disposed in the second opening, the first electrical connection portion is electrically connected to the first electrode through the first opening, and a projection of the second opening on the first substrate is within a projection of the first electrode on the first substrate, wherein:
a region defined by the second opening is a first region, and a second region surrounds the first region,
a portion of the first insulating layer located in the first region has a first thickness, and another portion of the first insulating layer located in the second region has a second thickness, wherein the first thickness is smaller than the second thickness,
the first insulating layer includes a first film layer and a second film layer that are stacked, and the first film layer is disposed on a side of the second film layer close to the first substrate,
the first film layer contains the first opening, and the second film layer contains a third opening, wherein a projection of the first opening on the first substrate is located within a projection of the third opening on the first substrate, and
the projection of the second opening on the first substrate is within the projection of the third opening on the first substrate.