Flexible display panel and manufacturing method for the same

Abstract

A flexible display panel is disclosed. The panel includes: a flexible substrate; an organic material layer disposed on the flexible substrate, and the organic material layer includes multiple grooves; multiple thin-film transistors received in the multiple grooves; a planarization layer disposed on the organic material layer and the multiple thin-film transistors; a pixel definition layer disposed on the planarization layer, and including multiple openings; multiple organic light-emitting diodes received in the multiple openings; an encapsulation layer disposed on the multiple organic light-emitting diodes and the pixel definition layer. The formed organic material layer having the groove has good bending property, which can improve the stress absorption and release capability of the device, and can avoid the film from variations in the performance of the thin-film transistors (such as threshold voltage Vth, sub-threshold swing S.S, etc.) that occur during constant bending in order to increase the life of device.

What is claimed is: 
     
         1 . A manufacturing method for flexible display panel, comprising steps of:
 forming an organic material layer including multiple grooves on a flexible substrate;   forming a thin-film transistor in each of the multiple grooves;   forming a planarization layer on the organic material layer and the multiple thin-film transistors;   forming a pixel definition layer including multiple openings on the planarization layer;   forming an organic light-emitting diode in the opening; and   forming an encapsulation layer on multiple organic light-emitting diodes and the pixel definition layer.   
     
     
         2 . The manufacturing method for flexible display panel according to  claim 1 , wherein the multiple grooves are corresponding to the multiple openings respectively and each groove is opposite to a corresponding one of the multiple openings. 
     
     
         3 . The manufacturing method for flexible display panel according to  claim 1 , wherein, the step of forming a thin-film transistor in each of the multiple grooves comprises steps of:
 forming an active layer in the groove;   forming a first insulation layer on the active layer;   forming a gate electrode on the first insulation layer;   forming a second insulation layer on the gate electrode and the first insulation layer;   forming a second metal layer on the second insulation layer;   forming an interlayer insulation layer on the second insulation layer and the second metal layer; and   forming a source electrode and a drain electrode that penetrates the interlayer insulation layer, the second insulation layer, and the first insulation layer to contact with the active layer on the interlayer insulation layer.   
     
     
         4 . The manufacturing method for flexible display panel according to  claim 2 , wherein, the step of forming a thin-film transistor in each of the multiple grooves comprises steps of:
 forming an active layer in the groove;   forming a first insulation layer on the active layer;   forming a gate electrode on the first insulation layer;   forming a second insulation layer on the gate electrode and the first insulation layer;   forming a second metal layer on the second insulation layer;   forming an interlayer insulation layer on the second insulation layer and the second metal layer; and   forming a source electrode and a drain electrode that penetrates the interlayer insulation layer, the second insulation layer, and the first insulation layer to contact with the active layer on the interlayer insulation layer.   
     
     
         5 . The manufacturing method for flexible display panel according to  claim 1 , wherein the step of forming an organic light-emitting diode in the opening comprises steps of:
 forming an anode that penetrates the planarization layer to contact with the thin-film transistor in the opening;   forming an organic light-emitting function layer on the anode; and   forming a cathode on the organic light-emitting function layer.   
     
     
         6 . The manufacturing method for flexible display panel according to  claim 2 , wherein the step of forming an organic light-emitting diode in the opening comprises steps of:
 forming an anode that penetrates the planarization layer to contact with the thin-film transistor in the opening;   forming an organic light-emitting function layer on the anode; and   forming a cathode on the organic light-emitting function layer.   
     
     
         7 . The manufacturing method for flexible display panel according to  claim 1 , wherein before the step of forming an encapsulation layer on multiple organic light-emitting diodes and the pixel definition layer, the method further comprises a step of:
 forming multiple supporting bodies on the pixel definition layer.