Electroluminescent device having window

Patent metadata

Field	Value
Publication number	US-10978666-B2
Application number	US-201815976210-A
Country	US
Kind code	B2
Filing date	May 10, 2018
Priority date	Jan 8, 2018
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

In non-limiting example embodiments, an electroluminescent device may include a lower structure including an emission area, and an encapsulation structure located on the lower structure. The lower structure may include a window. The window may be a light transmitting region or a notch. The light transmitting region may be spaced apart from the emission area and completely or partially surrounded by the emission area in a plan view. The notch may be formed at one side of the lower structure and recessed inward in a plan view such that one side of the emission area substantially conforms to the notch.

First claim

What is claimed is:

1. An electroluminescent device, comprising:
a lower structure including a non-transparent emission area; and
an encapsulation structure located on the lower structure,
wherein the lower structure includes a window, the window being a light transmitting region having a higher light transmittance than the non-transparent emission area and having an entire lateral side completely surrounded by the non-transparent emission area in a plan view; an electroluminescent unit having a first electrode, a second electrode, and an intermediate layer located between the first electrode and the second electrode; a first wire that extends in a direction from the non-transparent emission area toward a first lateral side of the light transmitting region; a second wire that extends in a direction away from a second lateral side of the light transmitting region toward the non-transparent emission area; a connection member that bypasses the light transmitting region in a plan view, the connection member being electrically connected between the first wire and the second wire; and an outer non-emission area that completely surrounds an entire lateral side of the non-transparent emission area in a plan view,
the first and second lateral sides of the light transmitting region are included in the entire lateral side of the light transmitting region,
the first and second lateral sides of the light transmitting region face each other,
the light transmitting region is located between the first wire and the second wire,
the first and second wires are located on a same layer,
the first and second wires overlap the non-transparent emission area,
the first wire and the second wire are power wires to supply a driving current to the first electrode or the second electrode,
the first and second wires have the same driving current state,
the connection member includes at least two third wires with at least one third wire located on a layer different from the same layer on which the first and second wires are disposed, and at least one fourth wire located on the same layer on which the first and second wires are disposed,
the third and fourth wires overlap the non-transparent emission area,
a direction in which one of the third wires extends is perpendicular to a direction in which the at least one fourth wire extends,
the outer non-emission area includes an outer inorganic top surface portion that completely surrounds the entire lateral side of the non-transparent emission area in a plan view,
the encapsulation structure includes an inorganic lower surface that makes a contact with an entire of the outer inorganic top surface portion,
the lower structure further includes an inner non-emission area that has an entire lateral side completely surrounded by the non-transparent emission area in a plan view,
the inner non-emission area includes the light transmitting region and an inner inorganic top surface portion that completely surrounds the entire lateral side of the light transmitting region in a plan view, and
the inorganic lower surface of the encapsulation structure makes a contact with an entire of the inner inorganic top surface portion.

2. An electroluminescent device, comprising:
a lower structure including a non-transparent emission area;
an encapsulation structure located on the lower structure; and
a touch panel located on the encapsulation structure,
wherein the lower structure includes a window, the window being a light transmitting region having a higher light transmittance than the non-transparent emission area and having an entire lateral side completely surrounded by the non-transparent emission area in a plan view; and an outer non-emission area that completely surrounds an entire lateral side of the non-transparent emission area in a plan view,
the touch panel includes a first sensing electrode adjacent to the window, a second sensing electrode located farther from the window than the first sensing electrode, and a bridge electrode electrically connecting the first sensing electrode to the second sensing electrode,
an area of the first sensing electrode is smaller than an area of the second sensing electrode,
the outer non-emission area includes an outer inorganic top surface portion that completely surrounds the entire lateral side of the non-transparent emission area in a plan view,
the encapsulation structure includes an inorganic lower surface that makes a contact with an entire of the outer inorganic top surface portion,
the first and second sensing electrodes are not overlapped with the outer inorganic top surface portion,
the lower structure further includes an inner non-emission area that has an entire lateral side completely surrounded by the non-transparent emission area in a plan view,
the inner non-emission area includes the light transmitting region and an inner inorganic top surface portion that completely surrounds the entire lateral side of the light transmitting region in a plan view, and
the inorganic lower surface of the encapsulation structure makes a contact with an entire of the inner inorganic top surface portion.

3. The electroluminescent device of claim 2 , wherein
the first and second sensing electrodes are not overlapped with the inner inorganic top surface portion.

4. An electroluminescent device, comprising:
a lower structure including a non-transparent emission area;
an encapsulation structure located on the lower structure; and
a touch panel located on the encapsulation structure,
wherein the lower structure includes a window, the window being a light transmitting region having a higher light transmittance than the non-transparent emission area and having an entire lateral side completely surrounded by the non-transparent emission area in a plan view; and an outer non-emission area that completely surrounds an entire lateral side of the non-transparent emission area in a plan view,
the touch panel includes a first dummy electrode adjacent to the window and a second dummy electrode located farther from the window than the first dummy electrode,
an area of the first dummy electrode is smaller than an area of the second dummy electrode,
the outer non-emission area includes an outer inorganic top surface portion that completely surrounds the entire lateral side of the non-transparent emission area in a plan view,
the encapsulation structure includes an inorganic lower surface that makes a contact with an entire of the outer inorganic top surface portion,
the first and second dummy electrodes are not overlapped with the outer inorganic top surface portion,
the lower structure further includes an inner non-emission area that has an entire lateral side completely surrounded by the non-transparent emission area in a plan view,
the inner non-emission area includes the light transmitting region and an inner inorganic top surface portion that completely surrounds the entire lateral side of the light transmitting region in a plan view, and
the inorganic lower surface of the encapsulation structure makes a contact with an entire of the inner inorganic top surface portion.

5. The electroluminescent device of claim 4 , wherein
the first and second dummy electrodes are not overlapped with the inner inorganic top surface portion.

6. An electroluminescent device, comprising:
a lower structure including a non-transparent emission area;
an encapsulation structure located on the lower structure, and
a touch panel located on the encapsulation structure, the touch panel including a first touch electrode,
wherein the lower structure includes a window, the window being a light transmitting region having a higher light transmittance than the non-transparent emission area and having an entire lateral side completely surrounded by

Assignees

• Samsung Display Co Ltd

Inventors

• Park Myoung Seo

Classifications

• H10K59/8731 Primary

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title