US2019172880A1PendingUtilityA1

Organic light emitting diode device and manufacturing method thereof, display panel, and display device

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Assignee: BOE TECHNOLOGY GROUP CO LTDPriority: Dec 5, 2017Filed: Nov 26, 2018Published: Jun 6, 2019
Est. expiryDec 5, 2037(~11.4 yrs left)· nominal 20-yr term from priority
Inventors:Weilong Zhou
H01L 27/3248H01L 51/5016H01L 51/5206H01L 51/5221H01L 27/3246H01L 51/5056H01L 27/322H10K 59/879H10K 59/122H10K 59/124H10K 2101/10H10K 50/15H10K 50/858H10K 59/35H10K 59/38H10K 50/822H10K 50/81H10K 50/85H10K 50/813H10K 50/82H10K 59/123H10K 50/11
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Claims

Abstract

The present disclosure provides an organic light emitting diode device and a manufacturing method thereof, a display panel and a display device. The organic light emitting diode device includes: a substrate; and a light emitting component and a first structural layer provided on a side of the substrate, wherein the light emitting component is provided on a side of the first structural layer distal to the substrate, and a surface area of a light emitting surface of the light emitting component is larger than an area of an orthographic projection of the light emitting component on the substrate.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An organic light emitting diode device, comprising:
 a substrate; and   a light emitting component and a first structural layer provided on a side of the substrate,   wherein the light emitting component is provided on a side of the first structural layer distal to the substrate, and a surface area of a light emitting surface of the light emitting component is larger than an area of an orthographic projection of the light emitting component on the substrate.   
     
     
         2 . The organic light emitting diode device of  claim 1 , wherein the light emitting surface of the light emitting component comprises a curved surface recessed towards the substrate. 
     
     
         3 . The organic light emitting diode device of  claim 2 , wherein the curved surface comprises a spherical-cap curved surface or a concave-convex curved surface which is constituted by a plurality of spherical-cap curved surfaces. 
     
     
         4 . The organic light emitting diode device of  claim 3 , wherein a radius of a bottom circle of the spherical cap is r, a height of the spherical cap is H, and arctan(H/r) is an angle ranging from about 20° to about 40°. 
     
     
         5 . The organic light emitting diode device of  claim 1 , wherein a surface of the first structural layer proximal to the light emitting component and a surface of the light emitting component proximal to the first structural layer have a same shape and are in contact with each other. 
     
     
         6 . The organic light emitting diode device of  claim 1 , wherein a thickness of the first structural layer in a direction perpendicular to the substrate ranges from about 1 μm to about 4 μm. 
     
     
         7 . The organic light emitting diode device of  claim 5 , wherein the first structural layer is a planarization layer, a pixel definition layer is further provided at the side of the first structural layer distal to the substrate,
 an orthographic projection of the pixel definition layer on the substrate does not overlap with an orthographic projection of the light emitting component on the substrate, the pixel definition layer comprises a plurality of pixel definition structures, the light emitting component is provided between adjacent pixel definition structures, and a region between the adjacent pixel definition structures defines the area of the orthographic projection of the light emitting component on the substrate.   
     
     
         8 . The organic light emitting diode device of  claim 7 , wherein the organic light emitting diode device is of a top-emission type, an encapsulation layer is further provided on a side of the pixel definition structures distal to the substrate, and spacers are provided between the pixel definition structures and the encapsulation layer. 
     
     
         9 . The organic light emitting diode device of  claim 1 , wherein the light emitting component comprises a cathode, an anode, and an organic light emitting material layer between the cathode and the anode. 
     
     
         10 . The organic light emitting diode device of  claim 9 , wherein the light emitting component further comprises a hole injection layer, a hole transport layer, an electron transport layer and an electron injection layer. 
     
     
         11 . The organic light emitting diode device of  claim 9 , wherein a thin film transistor is provided between the light emitting component and the substrate, the thin film transistor comprises an active layer, a gate, a source and a drain, and the drain is coupled to the anode. 
     
     
         12 . The organic light emitting diode device of  claim 1 , wherein a light adjustment component is provided on a side of the light emitting component distal to the substrate, the light adjustment component is configured to convert light emitted from the light emitting component into parallel light, and to emit the parallel light out. 
     
     
         13 . The organic light emitting diode device of  claim 7 , wherein the organic light emitting diode device is of a top-emission type, an encapsulation layer is further provided on a side of the pixel definition structures distal to the substrate, and spacers are provided between the pixel definition structures and the encapsulation layer, a light adjustment component is provided inside of the light emitting component, the light adjustment component is configured to convert light emitted from the light emitting component into parallel light, and to emit the parallel light out. 
     
     
         14 . The organic light emitting diode device of  claim 12 , wherein the light adjustment component comprises a lens. 
     
     
         15 . The organic light emitting diode device of  claim 13 , wherein the light adjustment component comprises a lens. 
     
     
         16 . A manufacturing method of an organic light emitting diode device, comprising steps of:
 forming a first structural layer on a side of a substrate; and   forming a light emitting component on a side of the first structural layer distal to the substrate;   wherein a surface area of a light emitting surface of the light emitting component is larger than an area of an orthographic projection of the light emitting component on the substrate.   
     
     
         17 . The manufacturing method of an organic light emitting diode device of  claim 16 , wherein
 the step of forming the first structural layer comprises steps of:   forming a planarization layer on a side of a substrate; and   forming a curved surface recessed towards the substrate on a side of the planarization layer distal to the substrate, to obtain the first structural layer.   
     
     
         18 . A display panel, comprising an organic light emitting diode device, wherein the organic light emitting diode device is the organic light emitting diode device of  claim 1 . 
     
     
         19 . A display panel, comprising an organic light emitting diode device, wherein the organic light emitting diode device is the organic light emitting diode device of  claim 2 . 
     
     
         20 . A display device, comprising an display panel, wherein the display panel is the display panel of  claim 18 .

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