Electroluminance lighting device

Patent metadata

Field	Value
Publication number	US-2020203654-A1
Application number	US-201916550114-A
Country	US
Kind code	A1
Filing date	Aug 23, 2019
Priority date	Dec 24, 2018
Publication date	Jun 25, 2020
Grant date	—

Abstract

The present disclosure relates to an electroluminescence lighting device. The present disclosure provides an electroluminescence light device comprising: a substrate including an emission area divided into a plurality of segments and non-emission area surrounding the emission area; a segment line arranged from the non-emission area to the segment; a buffer layer on the segment line; an auxiliary line defining a plurality of pixels within each segment on the buffer layer; a first pad disposed at the non-emission area; a segment switch disposed at the non-emission area and connecting the first pad to the segment line; and an emission element disposed at each pixel.

First claim

What is claimed is:

1 . An electroluminescence lighting device comprising:
a substrate including an emission area divided into a plurality of segments and a non-emission area surrounding the emission area; a segment line extending from the non-emission area to the plurality of segments; a buffer layer disposed on the segment line; an auxiliary line defining a plurality of pixels within each segment on the buffer layer; a first pad disposed at the non-emission area; a segment switch disposed at the non-emission area and connecting the first pad to the segment line; and an emission element disposed at each pixel.

2 . The device according to claim 1 , wherein the segment line overlaps the auxiliary line and is connected to the auxiliary line through a contact hole at the buffer layer.

3 . The device according to claim 1 , further comprising:
an anode layer disposed on the auxiliary line; an emission layer disposed on the anode layer; a cathode layer disposed on the emission layer; an encapsulation layer disposed on the cathode layer; and a cover film attached on the encapsulation layer by an adhesive material.

4 . The device according to claim 3 , wherein the anode layer comprises:
a power line contacting and covering the auxiliary line; a first electrode disposed in the pixel and coupling to the power line; and a link electrode coupling to the first electrode and the power line.

5 . The device according to claim 4 , further comprising a passivation layer covering the power line, the link electrode and circumferences of the first electrode, and exposing middle portions of the first electrode to define an open area.

6 . The device according to claim 5 , wherein the emission element includes the first electrode, the emission layer and the cathode layer sequentially formed at the open area.

7 . The device according to claim 3 , further comprising a second electrode extended from the cathode layer to the non-emission area.

8 . The device according to claim 1 , wherein the plurality of segments have a same size and is disposed in a matrix form.

9 . The device according to claim 9 , wherein the segment line is formed to correspond to the same number of the plurality of segments disposed in a column direction and overlaps the plurality of segments.

10 . The device according to claim 1 , wherein the auxiliary line allocated in each segment is connected to each segment line in one-to-one correspondence through one contact hole allocated for each segment.

11 . The device according to claim 1 , wherein the first pad supplies an electric voltage for driving the plurality of segments to the segment line.

12 . An electroluminescence lighting device comprising:
an emission area and a non-emission area defined in a substrate, wherein the emission is divided into a plurality of segments that includes a plurality of pixels and the non-emission area disposed outside the emission area; a plurality of segment lines extending from the non-emission area electrically connected to the plurality of segments; first and second pads defined in the non-emission area; a plurality of segment switches disposed in the non-emission area and connecting the first pad to the plurality of segment lines; an emission element disposed in each pixel; and a cathode layer of the emission element covering the plurality of segments.

13 . The device according to claim 12 , further comprising an auxiliary line defining a plurality of pixels within each segment.

14 . The device according to claim 12 , further comprising a buffer layer disposed on the substrate and preventing foreign materials from intruding into the emission element.

15 . The device according to claim 12 , wherein the first pad receives a driving power from outside and selectively supplies the driving power to the plurality of segments.

16 . The device according to claim 12 , wherein the segment switch is disposed between the first pad and the plurality of segments.

17 . The device according to claim 12 , wherein the second pad is disposed in the non-emission area and electrically disconnected from the first pad.

18 . The device according to claim 12 , wherein the second pad is disposed at both sides of the first pad.

19 . The device according to claim 12 , wherein the second pad receives a common voltage for driving the plurality of segments.

20 . The device according to claim 12 , wherein the second pad CP is connected to the cathode layer CAT or formed as s single body with the cathode layer.

Assignees

• Lg Display Co Ltd

Inventors

• Moon Youngkyun
• Kim Jongmin
• Youk Seunghyun

Classifications

• H10K59/19

  Segment displays · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K59/80516

  combined with auxiliary electrodes, e.g. ITO layer combined with metal lines · CPC title

• H10K50/805

  Electrodes · CPC title