US2020403184A1PendingUtilityA1

Organic light-emitting diode display

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Assignee: SAMSUNG DISPLAY CO LTDPriority: Apr 14, 2015Filed: Sep 8, 2020Published: Dec 24, 2020
Est. expiryApr 14, 2035(~8.7 yrs left)· nominal 20-yr term from priority
Inventors:Ho Jin YoonByoung Ki KimDae Woo LeeYun-Mo Chung
H10K 59/874H10K 59/873H10K 59/871H10K 50/844H10K 59/122H10K 59/124H10K 59/123G09G 3/3208H01L 51/524H01L 2251/5315H01L 27/3246H01L 51/5259H01L 51/5253H10K 50/841H10K 2102/3026H10K 50/846
63
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Claims

Abstract

An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a substrate including a display area in which an OLED is formed and a non-display area surrounding the display area. The OLED display also includes a pixel defining layer formed over the substrate and having an opening defining an emission area of the OLED, a first passivation layer covering a portion of the pixel defining layer formed in the non-display area and a second passivation layer formed in the non-display area, wherein a portion of the second passivation layer does not overlap the first passivation layer in the depth dimension of the OLED display. The OLED display further includes an encapsulation substrate formed to be opposite to the substrate and a filler filling a space between the substrate and the encapsulation substrate and contacting the first and second passivation layers.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An organic light-emitting diode (OLED) display, comprising:
 a substrate including a display area in which an OLED is formed and a non-display area surrounding the display area;   a pixel defining layer disposed over the substrate and having an opening defining an emission area of the OLED;   a first passivation layer disposed on the pixel defining layer;   a second passivation layer disposed in the non-display area and extended from the first passivation layer;   an encapsulation substrate disposed to be opposite to the substrate;   a sealant disposed between the substrate and the encapsulation substrate; and   a filler filling a space between the substrate and the encapsulation substrate and contacting the first passivation layer and the second passivation layer.   
     
     
         2 . The OLED display of  claim 1 , wherein the first passivation layer is disposed on the pixel defining layer without contacting the pixel defining layer. 
     
     
         3 . The OLED display of  claim 1 , wherein the first passivation layer and the second passivation layer include organic materials. 
     
     
         4 . The OLED display of  claim 1 , wherein the first passivation layer and the second passivation layer include inorganic materials. 
     
     
         5 . The OLED display of  claim 1 , wherein an end of the pixel defining layer is disposed between an edge of the display area and an edge of the filler on a plane. 
     
     
         6 . The OLED display of  claim 5 , further comprising: a planarization layer disposed below the pixel defining layer and the second passivation layer, wherein the second passivation layer covers substantially the entire surface of the planarization layer outside the pixel defining layer. 
     
     
         7 . The OLED display of  claim 6 , wherein each of the pixel defining layer, the first passivation layer, and the second passivation layer is formed of silicon-based polymer. 
     
     
         8 . The OLED display of  claim 6 , wherein the planarization layer has an opening to expose an interlayer insulating layer disposed below the planarization layer and wherein the second passivation layer covers the exposed interlayer insulating layer. 
     
     
         9 . The OLED display of  claim 1 , wherein the OLED includes a pixel electrode, an emission layer, and a common electrode and is covered with a capping layer. 
     
     
         10 . The OLED display of  claim 9 , wherein the first passivation layer and the second passivation layer are formed of the same material as the capping layer. 
     
     
         11 . The OLED display of  claim 1 , wherein the first and second passivation layers are disposed on different layers. 
     
     
         12 . The OLED display of  claim 1 , wherein the filler directly contacts top surfaces of the first passivation layer and the second passivation layer that face the encapsulation substrate. 
     
     
         13 . An organic light-emitting diode (OLED) display, comprising:
 an OLED disposed in a display area;   a pixel defining layer including a first portion disposed in the display area and a second portion disposed in a non-display area surrounding the display area;   a first passivation layer disposed on at least the second portion of the pixel defining layer,   a second passivation layer disposed in the non-display area and extended from the first passivation layer;   a planarization layer disposed below the pixel defining layer and the second passivation layer;   a filler covering the first and second passivation layers; and   a sealant disposed between the substrate and the encapsulation substrate, and   wherein the first passivation layer and the second passivation layer is disposed between the filler and, the pixel defining layer and the planarization layer.   
     
     
         14 . The OLED display of  claim 13 , wherein the first passivation layer is disposed on the pixel defining layer without contacting the pixel defining layer. 
     
     
         15 . The OLED display of  claim 13 , wherein the first passivation layer and the second passivation layer include organic materials. 
     
     
         16 . The OLED display of  claim 13 , wherein the first passivation layer and the second passivation layer include inorganic materials. 
     
     
         17 . The OLED display of  claim 13 , wherein an end of the pixel defining layer is disposed between an edge of the display area and an edge of the filler on a plane. 
     
     
         18 . The OLED display of  claim 17 , wherein the second passivation layer covers substantially the entire surface of the planarization layer outside the pixel defining layer. 
     
     
         19 . The OLED display of  claim 13 , wherein each of the pixel defining layer, the first passivation layer, and the second passivation layer is formed of silicon-based polymer. 
     
     
         20 . The OLED display of  claim 13 , wherein the planarization layer has an opening to expose an interlayer insulating layer disposed below the planarization layer and wherein the second passivation layer covers the exposed interlayer insulating layer. 
     
     
         21 . The OLED display of  claim 13 , wherein the OLED includes a pixel electrode, an emission layer, and a common electrode and is covered with a capping layer. 
     
     
         22 . The OLED display of  claim 21 , wherein the first passivation layer is formed of the same material as the capping layer. 
     
     
         23 . The OLED display of  claim 21 , wherein the second passivation layer is formed of the same material as the capping layer. 
     
     
         24 . The OLED display of  claim 13 , wherein the first and second passivation layers are disposed on different layers, and the first passivation layer is farther from the substrate than the second passivation layer.

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