Display Panel and Manufacturing Method Thereof

A method of manufacturing a display panel, the display panel having a display area and a bent area, the method comprising:

• providing a flexible substrate;
• forming an etching stop layer on the flexible substrate;
• forming an inorganic material functional layer on the etching stop layer, each of the flexible substrate, the etching stop layer, and the inorganic material functional layer comprising the display area and the bent area;
• forming a planar layer, an anode and a pixel defining layer on the inorganic material functional layer;
• and
• forming a groove at the bent area, the groove disposed on the etching stop layer and penetrating the inorganic material functional layer by etching, the groove filled with a polymer material, and the bent area and the display area coupled with each other through a signal line.

A display panel, including a display area and a bent area, the display panel comprising:

• a flexible substrate comprising a substrate and a first polyimide layer formed on the substrate;
• an etching stop layer disposed on the flexible substrate;
• an inorganic material functional layer disposed on the etching stop layer, the inorganic material functional layer comprising a first barrier layer formed on the etching stop layer, a buffering layer formed on the first barrier layer, a structural film layer formed on the buffering layer, a second polyimide layer and a second barrier layer both formed between the buffering layer and the first barrier layer, and the second polyimide layer located between the first barrier layer and the second barrier layer;
• a planar layer disposed on the inorganic material functional layer;
• and
• an anode and a pixel defining layer formed on the planar layer successively;
• wherein the bent area comprises a groove disposed on the etching stop layer, the groove penetrates the inorganic material functional layer by etching and is filled with a polymer material, and the bent area and the display area are coupled with each other through a signal line.