JP-2026514324-A - Display panel

JP2026514324AJP 2026514324 AJP2026514324 AJP 2026514324AJP-2026514324-A

Abstract

A display panel according to one embodiment of the present invention includes a light-emitting element that outputs source light and includes a first electrode, a light-emitting layer disposed on the first electrode, and a second electrode disposed on the light-emitting layer, and an optical structure layer disposed on the light-emitting element, wherein the optical structure layer includes a light control layer disposed on the light-emitting element and including at least one light control pattern, a low refractive index layer disposed on the light control layer, and a barrier layer disposed between the light control layer and the low refractive index layer and containing silicon oxynitride (SiON), wherein the barrier layer is disposed adjacent to the low refractive index layer and has a nitrogen content of less than 1 at%, a second layer disposed separated from the low refractive index layer with the first layer in between and has a nitrogen content of 3 at% or more and 30 at%, and a third layer disposed separated from the low refractive index layer with the first and second layers in between and has a nitrogen content of less than 3.2 at%.

Inventors

キム，ジョンキ
キム，ジャン－イル
キム，ジョン－フン
ミン，キョンヘ
イ，ソンヨン
イ，スジン

Assignees

三星ディスプレイ株式會社

Dates

Publication Date: 20260511
Application Date: 20240214
Priority Date: 20230327

Claims (20)

A light-emitting element that outputs source light and includes a first electrode, a light-emitting layer disposed on the first electrode, and a second electrode disposed on the light-emitting layer, The optical structure layer is disposed on the light-emitting element, The aforementioned optical structure layer is A light control layer disposed on the light-emitting element and including at least one light control pattern, A low-refractive-index layer is disposed on the aforementioned optical control layer, Displaced between the light control layer and the low refractive index layer, the barrier layer includes silicon oxynitride (SiON), The aforementioned barrier layer is A first layer is located adjacent to the low refractive index layer and has a nitrogen content of less than 1 at%, A second layer is positioned separated from the low-refractive index layer, with the first layer in between, and has a nitrogen content of 3 at% or more and 30 at% or less. A display panel comprising: a third layer having a nitrogen content of less than 3.2 at%, which is positioned apart from the low refractive index layer with the first and second layers in between.
The display panel according to claim 1, wherein the refractive index of the third layer is 1.3 or more and 1.5 or less for light in the wavelength range of 400 nm to 700 nm.
The first layer is placed directly on the low refractive index layer, The second layer is placed directly on the first layer, The display panel according to claim 1, wherein the third layer is directly arranged on the second layer.
The display panel according to claim 1, wherein the thickness of the first layer is 500 Å or more.
The aforementioned optical structure layer is The display panel according to claim 1, further comprising a color filter layer containing a plurality of color filters, separated from the light control layer with the low refractive index layer in between.
The aforementioned light control pattern includes a first light control pattern that converts the source light into first light, and a second light control pattern that transmits the source light. The display panel according to claim 1, wherein the first light control pattern includes a first quantum dot that converts the source light into the first light.
The optical control layer further includes banks positioned between the optical control patterns, The display panel according to claim 1, wherein the barrier layer is directly disposed on one surface of the light control pattern and the bank.
The display panel according to claim 1, wherein the low refractive index layer comprises a base resin and a plurality of hollow particles dispersed in the base resin.
The display panel according to claim 1, wherein the low-refractive-index layer has a refractive index of 1.3 or less for light in the wavelength range of 400 nm to 700 nm.
The aforementioned second layer is, A second-first layer is arranged adjacent to the first layer, The display panel according to claim 1, further comprising a second-second layer disposed between the second-first layer and the third layer, having a nitrogen content different from that of the second-first layer.
The aforementioned optical structure layer is The optical control layer is further separated from the barrier layer by an additional barrier layer, The display panel according to claim 1, wherein the additional barrier layer is directly disposed on one side of the light control pattern.
The display panel according to claim 1, further comprising a filling layer disposed between the light-emitting element and the optical structure layer, and covering the light-emitting element.
The first layer has a refractive index of 1.3 or more and 1.5 or less for light in the wavelength range of 400 nm to 700 nm. The display panel according to claim 1, wherein the second layer has a refractive index of 1.4 or more and 1.8 or less for light in the wavelength range of 400 nm to 700 nm.
The display panel according to claim 1, wherein the third layer is in contact with one surface of the light control pattern.
The light-emitting element is positioned between the first electrode and the second electrode, and each includes a plurality of light-emitting stacks, each containing the light-emitting layer. The aforementioned multiple light-emitting stacks are A first light-emitting stack, which includes a first light-emitting layer, is placed on the first electrode described above, A charge generation layer is placed on the first light-emitting stack, A second light-emitting stack, which includes a second light-emitting layer, is disposed on the charge generation layer, The display panel according to claim 1, wherein the first light-emitting layer emits light of a different color from that of the second light-emitting layer.
A light-emitting element that outputs source light and includes a first electrode, a light-emitting layer disposed on the first electrode, and a second electrode disposed on the light-emitting layer, The optical structure layer is disposed on the light-emitting element, The aforementioned optical structure layer is A light control layer disposed on the light-emitting element and including at least one light control pattern, A low-refractive-index layer is disposed on the aforementioned optical control layer, The light control layer and the low refractive index layer are disposed between them, The barrier layer is arranged sequentially from the low refractive index layer, and each layer includes a first layer, a second layer, and a third layer, each containing silicon oxynitride (SiON). The nitrogen content of the second layer is 3 times or more and 60 times or less the nitrogen content of the first layer. A display panel in which the nitrogen content of the third layer is less than 3.2 at%.
The first layer is placed directly below the low refractive index layer, The second layer is placed directly below the first layer, The display panel according to claim 16, wherein the third layer is directly disposed below the second layer.
A light-emitting element that outputs source light and includes a first electrode, a light-emitting layer disposed on the first electrode, and a second electrode disposed on the light-emitting layer, The optical structure layer is disposed on the light-emitting element, The aforementioned optical structure layer is A light control layer disposed on the light-emitting element and including at least one light control pattern, A low-refractive-index layer is disposed on the aforementioned optical control layer, Displaced between the light control layer and the low refractive index layer, the barrier layer includes silicon oxynitride (SiON), The aforementioned barrier layer is A first layer, which is directly placed beneath the low refractive index layer and has a nitrogen content of less than 1 at%, A second layer is placed directly below the first layer and has a nitrogen content of 3 at% or more and 30 at% or less. A third layer is placed directly below the aforementioned second layer, The aforementioned optical control layer is a display panel directly positioned below the third layer.
The first layer has a refractive index of 1.3 or more and 1.5 or less for light in the wavelength range of 400 nm to 700 nm. The second layer has a refractive index of 1.4 or more and 1.8 or less for light in the wavelength range of 400 nm to 700 nm. The display panel according to claim 18, wherein the third layer has a refractive index of 1.3 or more and 1.5 or less for light in the wavelength range of 400 nm to 700 nm.
The thickness of the first layer is 500 Å or more. The thickness of the second layer is 600 Å or more. The display panel according to claim 18, wherein the thickness of the third layer is 500 Å or more.

Description

This invention relates to a display panel, and more specifically, to a display panel with improved durability and reliability, and increased display efficiency. The display panel includes a transmissive display panel that selectively transmits source light generated from a light source, and an emissive display panel that generates source light itself. The display panel may include different types of light control patterns for each pixel to generate a color image. The light control patterns may transmit only a portion of the wavelength range of the source light, or they may convert the color of the source light. Some light control patterns may not change the color of the source light, but may change the properties of the light. This is a perspective view of a display panel according to one embodiment of the present invention.This is a cross-sectional view of a display panel according to one embodiment of the present invention.This is a plan view of a display panel according to one embodiment of the present invention.This is a plan view showing an enlarged portion of a display panel according to one embodiment of the present invention.This is a cross-sectional view of a display panel according to one embodiment of the present invention.This figure shows an enlarged view of a portion of the cross-section of a display panel according to one embodiment of the present invention.This figure shows an enlarged view of a portion of the cross-section of a display panel according to one embodiment of the present invention.This figure shows an enlarged view of a portion of the cross-section of a display panel according to one embodiment of the present invention.This is a cross-sectional view of a light-emitting element according to one embodiment of the present invention.This is a cross-sectional view of a part of the display panel according to one embodiment of the present invention.This is an enlarged cross-sectional view of a part of the display panel according to one embodiment of the present invention.This is a cross-sectional view of a part of the display panel according to one embodiment of the present invention. The following describes embodiments of the present invention with reference to the drawings. In this specification, where a component (or region, layer, part, etc.) is referred to as "on top of," "combined with," or "combined with" another component, it means that it can be directly connected to or combined with the other component, or that a third component can be placed between them. The same drawing reference numeral refers to the same component. Furthermore, in drawings, the thickness, proportions, and dimensions of components are exaggerated for the sake of effective explanation of the technical content. "And/or" includes all combinations of one or more components defined by the relevant components. Terms such as "first," "second," etc., are used to describe various components, but the components are not limited to those defined by these terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as "down," "on the lower side," "up," and "on the upper side" are used to describe the relationships between the components shown in the drawings. These terms are relative concepts and are described based on the directions shown in the drawings. Terms such as "includes" or "possesses" indicate the presence of features, figures, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the presence or possibility of adding one or more other features, figures, steps, actions, components, parts, or combinations thereof. In this specification, "directly positioned" may mean that there are no additional layers, films, regions, plates, etc., between one part and another. For example, "directly positioned" may mean that two layers or two components are positioned without the use of additional components such as adhesives. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art in the field to which this invention pertains. Furthermore, terms defined in commonly used dictionaries should be interpreted as having the same meaning as they do in the context of the relevant art, and should not be interpreted in an overly idealistic or formal sense unless explicitly defined herein. A display panel according to one embodiment of the present invention will be described below with reference to the drawings. Figure 1a is a perspective view of a display panel according to one embodiment of t