Display panel, method for manufacturing the same, and display device

A method for manufacturing a display panel, comprising:

• providing a substrate;
• arranging a sacrificial layer on the substrate;
• arranging a thin film transistor array layer at a side of the sacrificial layer facing away from the substrate;
• peeling off the substrate from the sacrificial layer;
• removing the sacrificial layer;
• and
• arranging a light-emitting function layer at a side of the thin film transistor array layer,
• wherein said arranging a thin film transistor array layer at a side of the sacrificial layer facing away from the substrate comprises:
• arranging a buffer film layer on the sacrificial layer;
• arranging an active layer on the buffer film layer;
• arranging a first insulation film layer at a side of the active layer facing away from the buffer film layer;
• patterning the first insulation film layer to form a first insulation layer having at least two first through holes;
• arranging an electrode layer on the first insulation layer, wherein the electrode layer comprises at least one first electrode and at least one second electrode, the at least one first electrode and the at least one second electrode are electrically connected to the active layer through the at least two first through holes, respectively, a respective one of the at least two first through holes corresponding to one of the at least one first electrode comprises a first portion overlapping with the active layer and a second portion not overlapping with the active layer and communicated with the first portion;
• and arranging a planarization layer on the electrode layer, and
• said arranging a light-emitting function layer at a side of the thin film transistor array layer comprises:
• patterning the buffer film layer to form a buffer layer having at least one second through hole;
• arranging a first contact electrode at a side of the buffer layer facing away from the active layer, wherein the first contact electrode is electrically connected to the at least one first electrode through the at least one second through hole;
• and arranging a light-emitting element at a side of the first contact electrode facing away from the buffer layer, wherein the light-emitting element is electrically connected to the first contact electrode.

A display device, comprising a display panel, wherein the display panel comprises:

• a thin film transistor array layer;
• and
• a light-emitting function layer located at a side of the thin film transistor array layer,
• wherein the thin film transistor array layer comprises a planarization layer, an electrode layer, a first insulation layer, an active layer, and a buffer layer;
• the electrode layer is located at a side of the planarization layer close to the light-emitting function layer, the first insulation layer is located at a side of the electrode layer close to the light-emitting function layer, the active layer is located at a side of the first insulation layer close to the light-emitting function layer, and the buffer layer is located at a side of the active layer close to the light-emitting function layer;
• the first insulation layer is provided with at least two first through holes, the electrode layer comprises at least one first electrode and at least one second electrode, the at least one first electrode and the at least one second electrode are electrically connected to the active layer through the at least two first through holes, respectively, and each of the at least one first electrode comprises a connection portion and an electrode portion which are connected to each other and made of a same material, wherein the connection portion is located in a respective first through hole, and the electrode portion is located at a side of the first insulation layer facing away from the active layer;
• a respective one of the at least two first through holes corresponding to one of the at least one first electrode comprises a first portion overlapping with the active layer and a second portion not overlapping with the active layer and communicated with the first portion;
• the light-emitting function layer comprises a plurality of first contact electrodes and a plurality of light-emitting elements, the plurality of light-emitting elements is electrically connected to the plurality of first contact electrodes, and the plurality of first contact electrodes is located at a side of the plurality of light-emitting elements close to the buffer layer;
• and
• the buffer layer is provided with at least one second through hole, and the at least one first electrode is electrically connected to the plurality of first contact electrodes through the at least one second through hole.