IP Library › Granted Patent US 12,514,098
Granted Patent B2
US 12,514,098 · App. 17/976,769 · Granted Dec 30, 2025

Light emitting display device

Inventors: Min Kyu Chun (Paju-si, KR); Jun Hee Han (Paju-si, KR)
Assignee: LG Display Co., Ltd
H10K59/879H10K59/122H10K59/124H10K2102/351
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Quick Facts
Patent No.
US 12,514,098
App. No.
17/976,769
Granted
Dec 30, 2025
Kind
B2
Abstract

A light emitting display device capable of vertically and horizontally adjusting an area where the energy of light is concentrated when laser light for repair is radiated, the adjusted area corresponds to an anode separation region, so that normal repair can be performed and damages on a cathode caused by energy concentration can be prevented by changing a structure under the cathode.

Claims (36)

1 . A light emitting display device comprising

a substrate including a plurality of sub-pixels, each of the plurality of sub-pixels having an emission part and a non-emission part;

a lens disposed at a part of the non-emission part of the substrate;

a planarization layer covering the lens and provided on the plurality of sub-pixels;

an anode overlapping with the emission part and the lens at each of the plurality of sub-pixels, on the planarization layer;

a cap electrode pattern provided on the anode and overlapping with the lens; and

an organic layer and a cathode sequentially disposed on the anode.

2 . The light emitting display device of claim 1 , further comprising:

a first bank disposed between the anode and the cap electrode pattern; and

a second bank disposed between the cap electrode pattern and the cathode.

3 . The light emitting display device of claim 2 , wherein the cap electrode pattern has one or more curved portions.

4 . The light emitting display device of claim 3 , wherein the curved portions are provided opposite to the upper surface of the first bank, and the upper surface of the first bank has curved portions corresponding to the curved portions of the cap electrode pattern.

5 . The light emitting display device of claim 2 , wherein the first and second banks are in contact with each other at the non-emission part at which the cap electrode pattern is not provided.

6 . The light emitting display device of claim 5 , wherein an interface between the first and second banks in contact with each other is flat.

7 . The light emitting display device of claim 1 , wherein the cap electrode pattern is made of a reflective metal or a reflective metal alloy.

8 . The light emitting display device of claim 1 , wherein the non-emission part includes a sub-pixel driving circuit, a passivation film for protecting the sub-pixel driving circuit is provided on the substrate, and

wherein the lens is provided on the passivation film of the non-emission part.

9 . The light emitting display device of claim 8 , wherein the lens has a plurality of hemispherical surfaces or a plurality of arc surfaces on the upper surface of the passivation film, and focuses of the hemispherical surfaces or the arc surfaces are in the planarization layer.

10 . The light emitting display device of claim 1 , wherein the cap electrode pattern has a thickness of 1 nm to 300 nm.

11 . A light emitting display device comprising:

a substrate including a plurality of sub-pixels, each of the plurality of sub-pixels having an emission part and a non-emission part;

a planarization layer disposed on the plurality of sub-pixels;

an anode disposed on the planarization layer at each of plurality of sub-pixels;

a cap electrode pattern disposed on the anode; and

an organic layer and a cathode sequentially disposed on the anode,

wherein the cap electrode pattern is provided in a bank superposed on the anode in the non-emission part.

12 . The light emitting display device of claim 11 , wherein the cap electrode pattern has a thickness of 1 nm to 300 nm.

13 . A light emitting display device comprising:

a substrate including a plurality of sub-pixels, each of the plurality of sub-pixels having an emission part and a non-emission part;

a lens disposed at a part of the non-emission part on the substrate;

a planarization layer covering the lens and provided on the plurality of sub-pixels;

an anode overlapping with the emission part and the lens at each of the plurality of sub-pixels, on the planarization layer; and

an organic layer and a cathode sequentially disposed on the anode.

14 . The light emitting display device of claim 13 , wherein the non-emission part includes a sub-pixel driving circuit, a passivation film for protecting the sub-pixel driving circuit is provided on the substrate, and

wherein the lens is provided on the passivation film of the non-emission part.

15 . The light emitting display device of claim 14 , wherein the lens has a plurality of hemispherical surfaces or a plurality of arc surfaces on an upper surface of the passivation film, and focuses of the hemispherical surfaces or the arc surfaces are in the planarization layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 30, 2022
From: CHUN, MIN KYU; HAN, JUN HEE
To: LG DISPLAY CO., LTD.
Reel/Frame 061804/0193 →
Priority Claims (1)
KR 10-2021-0194769 · Dec 31, 2021 · national
Continuity (1)
Related Publication 20230217689A1 · Jul 6, 2023
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