US 2016/0079326 A1 · PIXEL STRUCTURE OF ELECTROLUMINESCENT DISPLAY PANEL AND METHOD OF FABRICATING THE SAME

Abstract

A pixel structure of electroluminescent display panel includes a substrate, a display driving structure, a planarization structure and an electroluminescent device. The display driving structure is disposed on the substrate. The display driving structure includes a driving device. The planarization structure is disposed on the substrate. The planarization structure covers the top surface and the sidewall of the driving device, and the planarization structure has a contact hole partially exposing the driving device. The electroluminescent device is disposed on the planarization structure. The electroluminescent device includes an anode, a light-emitting layer and a cathode. The anode covers the top surface of the planarization structure and surrounds the sidewall of the planarization structure, and the anode is filled into the contact hole and electrically connected to the driving device. The light-emitting layer is disposed on the anode. The cathode is disposed on the light-emitting layer.

Claims13

Dependent claims

A pixel structure of an electroluminescent display panel, comprising:

a substrate;
a display driving structure disposed on the substrate, wherein the display driving structure comprises a driving device;
a planarization structure disposed on the substrate, wherein the planarization structure covers a top surface of the driving device and a sidewall of the driving device, and the planarization structure has a contact hole exposing a portion of the driving device;
and
an electroluminescent device disposed on the planarization structure, wherein the electroluminescent device comprises:
an anode covering a top surface of the planarization structure and surrounding a sidewall of the planarization structure, wherein the anode is filled into the contact hole and the anode is electrically connected to the driving device;
a light-emitting layer disposed on the anode;
and
a cathode disposed on the light-emitting layer.

6 more elements

A method of fabricating a pixel structure of an electroluminescent display panel, comprising:

providing a substrate;
forming a display driving structure on the substrate, wherein the display driving structure comprises a driving device;
forming a patterned planarization layer on the substrate, wherein the patterned planarization layer comprises a planarization structure, a closed loop trench and a contact hole, the closed loop trench surrounds a sidewall of the planarization structure, the planarization structure covers a top surface of the driving device and a sidewall of the driving device, and the contact hole exposes a portion of the driving device;
and
forming an anode on the planarization structure, wherein the anode covers a top surface of the planarization structure and the anode surrounds the sidewall of the planarization structure, and the anode is filled into the contact hole and the anode is electrically connected to the driving device;
and
forming a light-emitting layer and a cathode on the anode.

4 more elements

Dependencies are inferred from the claim text.

Pixel structure of electroluminescent display panel and method of fabricating the same

Life of this patent

Pixel structure of electroluminescent display panel and method of fabricating the same

Life of this patent

Abstract

Claims13