Flexible display panel, display device, and method for manufacturing flexible display panel
View Patent ↗The present disclosure relates to a flexible display panel, a display device, and a manufacturing method of the flexible display panel. The flexible display panel includes: a flexible base substrate, a conducting layer arranged in a display region of the flexible base substrate, a plurality of wires arranged in an edge bendable region of the flexible base substrate, and an inorganic insulating layer arranged between the conducting layer and the plurality of wires and the flexible base substrate. Furthermore, the flexible display panel also includes: a first organic insulating layer at least arranged between the plurality of wires in the edge bendable region of the flexible base substrate and the inorganic insulating layer. A material of the first organic insulating layer is a cured photoresist.
1. A manufacturing method of a flexible display panel, comprising:
providing a flexible base substrate;
sequentially forming an inorganic insulating film layer and a photoresist film layer in a display region of the flexible base substrate and an edge bendable region of the flexible base substrate;
patterning the inorganic insulating film layer using the photoresist film layer to form a pattern of an inorganic insulating layer;
curing at least the photoresist film layer in the edge bendable region of the flexible base substrate to form a first organic insulating layer, the photoresist film layer as cured being a photoresist coated during fabrication of the inorganic insulating layer, the first organic insulating layer covering the inorganic insulating layer; and
forming a conducting layer on the inorganic insulating layer in the display region of the flexible base substrate while forming a plurality of wires on the first organic insulating layer in the edge bendable region of the flexible base substrate;
wherein the first organic insulating layer is further arranged in the display region of the flexible base substrate, and the first organic insulating layer is positioned between the conducting layer and the inorganic insulating layer.
2. The manufacturing method according to claim 1 , wherein the curing at least the photoresist film layer in the edge bendable region of the flexible base substrate to form a first organic insulating layer specifically comprises:
simultaneously curing the photoresist film layer in the edge bendable region of the flexible base substrate and the photoresist film layer in the display region of the flexible base substrate to form the first organic insulating layer.
3. The manufacturing method according to claim 2 , wherein after simultaneously curing the photoresist film layer in the edge bendable region of the flexible base substrate and the photoresist film layer in the display region of the flexible base substrate to form the first organic insulating layer, the manufacturing method further comprises:
performing an ashing process on a via hole pattern of the photoresist film layer, such that an area of a via hole pattern of the first organic insulating layer is greater than that of a via hole pattern of the inorganic insulating layer.
4. The manufacturing method according to claim 1 , wherein, after forming the conducting layer on the inorganic insulating layer in the display region of the flexible base substrate while forming the plurality of wires on the first organic insulating layer in the edge bendable region of the flexible base substrate, the manufacturing method further comprises:
forming a second organic insulating layer on the plurality of wires in the edge bendable region of the flexible base substrate.
5. The manufacturing method according to claim 4 , wherein, when forming a second organic insulating layer on the plurality of wires in the edge bendable region of the flexible base substrate, the manufacturing method further comprises:
forming a planarization layer, a spacer layer, or a pixel defining layer in the display region of the flexible base substrate.