CN112420947A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN112420947A
CN112420947A CN202011278594.4A CN202011278594A CN112420947A CN 112420947 A CN112420947 A CN 112420947A CN 202011278594 A CN202011278594 A CN 202011278594A CN 112420947 A CN112420947 A CN 112420947A
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China
Prior art keywords
layer
display panel
interface member
interface
light
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CN202011278594.4A
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Chinese (zh)
Inventor
左飞
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN202011278594.4A priority Critical patent/CN112420947A/en
Publication of CN112420947A publication Critical patent/CN112420947A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a driving circuit layer positioned on the substrate, a light-emitting device layer positioned on the driving circuit layer, a packaging layer positioned on the light-emitting device layer and a cover plate layer positioned on the packaging layer; the display panel also comprises at least one interface component positioned in the packaging layer, the interface component is positioned in a non-display area at the periphery of the display panel, and the refractive index of the interface component is different from that of any film layer of the packaging layer. This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.

Description

Display panel and display device
Technical Field
The application relates to the field of display, in particular to a display panel and a display device.
Background
With the improvement of life quality, people have higher and higher requirements on water and oxygen barrier property and service life of the display panel.
At present, when a display panel is packaged, the formed packaging layer is formed into a film on the whole surface, and the edge of the display panel is more easily corroded by water and oxygen, so that the service life of the display panel is shortened.
Therefore, a display panel and a display device are needed to solve the above technical problems.
Disclosure of Invention
The application provides a display panel and a display device, which aim to solve the technical problem that the service life of the display panel is reduced as the edge of the display panel is more easily corroded by water and oxygen because the whole surface of the current packaging layer is formed into a film without difference.
In order to solve the above problems, the technical solution provided by the present application is as follows:
a display panel comprises a substrate, a driving circuit layer positioned on the substrate, a light-emitting device layer positioned on the driving circuit layer, an encapsulation layer positioned on the light-emitting device layer and a cover plate layer positioned on the encapsulation layer;
the display panel further comprises at least one interface component positioned in the packaging layer, the interface component is positioned in a non-display area at the periphery of the display panel, and the refractive index of the interface component is different from that of any film layer of the packaging layer.
In the display panel of the present application, the encapsulation layer includes a first inorganic layer adjacent to one side of the light emitting device layer, a first organic layer on the first inorganic layer, and a second inorganic layer on the first organic layer;
the interface member is disposed in a layer with the first organic layer and/or the second inorganic layer.
In the display panel of the present application, the material of the interface member includes any one or a combination of more of silicon oxynitride, silicon nitride, and silicon oxide;
wherein a content of each element of the material of the interface member is different from a content of each element of the material of the first organic layer, and a content of each element of the material of the interface member is different from a content of each element of the material of the second inorganic layer.
In the display panel of the present application, the interface member has a refractive index greater than that of the first inorganic layer, and the interface member has a refractive index smaller than that of the second inorganic layer.
In the display panel of the present application, the interface member is disposed in the same layer as the first organic layer, and the thickness of the interface member is the same as that of the first organic layer;
or the interface member and the second inorganic layer are arranged on the same layer, and the thickness of the interface member is the same as that of the second inorganic layer.
In the display panel of the application, the interface member includes a plurality of interface units, the plurality of interface units are stacked, and at least one of the interface units is overlapped on the adjacent interface unit.
In the display panel of the present application, the interface member includes at least one first interface unit and at least one second interface unit arranged in different layers, and orthographic projections of the first interface unit and the second interface unit on the substrate at least partially coincide.
In the display panel of the present application, the refractive index of the interface member gradually increases in the light exit direction of the display panel.
In the display panel of the present application, the thickness of the interface member increases first and then decreases in a direction from the edge of the display panel to the center of the display panel.
The application also provides a display device comprising the display panel.
Has the advantages that: this application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first structure of a display panel according to the present application;
FIG. 2 is a schematic top view of a first structure of a display panel according to the present application;
FIG. 3 is a second structural diagram of a display panel according to the present application;
FIG. 4 is a schematic view of a third structure of a display panel according to the present application;
FIG. 5 is a schematic diagram of a fourth structure of a display panel according to the present application;
FIG. 6 is a schematic diagram of a fifth structure of a display panel according to the present application;
FIG. 7 is a schematic view of a sixth structure of a display panel according to the present application;
FIG. 8 is a schematic diagram of a seventh structure of a display panel according to the present application;
fig. 9 is a partial schematic view of an eighth structure of a display panel according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, when a display panel is packaged, the formed packaging layer is formed into a film on the whole surface, and the edge of the display panel is more easily corroded by water and oxygen, so that the service life of the display panel is shortened.
Referring to fig. 1 to 6, the present application discloses a display panel 100, which includes a substrate 210, a driving circuit layer 220 disposed on the substrate 210, a light emitting device layer 230 disposed on the driving circuit layer 220, an encapsulation layer 300 disposed on the light emitting device layer 230, and a cover plate layer 500 disposed on the encapsulation layer 300. The display panel 100 further includes at least one interface member 400 located in the encapsulation layer 300, the interface member 400 is located in a non-display region at the periphery of the display panel 100, and a refractive index of the interface member 100 is different from a refractive index of any film layer of the encapsulation layer 300.
This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
The technical solution of the present application will now be described with reference to specific embodiments.
The display panel 100 includes a substrate 210, a driving circuit layer 220 located on the substrate 210, a light emitting device layer 230 located on the driving circuit layer 220, a package layer 300 located on the light emitting device layer 230, and a cover plate layer 500 located on the package layer 300, and specifically, referring to fig. 1 and fig. 2, in fig. 3 to fig. 8, the cover plate layer 500 is omitted for convenience.
In this embodiment, the display panel 100 further includes at least one interface member 400 located in the encapsulation layer 300, the interface member 400 is located in a non-display region at the periphery of the display panel 100, and the refractive index of the interface member 100 is different from the refractive index of any film layer of the encapsulation layer 300. The encapsulation layer 300 includes an interface member 400 disposed near an edge of the display panel 100, and the interface member 400 is used to extend an intrusion path of water and oxygen, specifically referring to fig. 1 and 2, where 110 in fig. 2 represents a display region, and the non-display region is located outside the display region 110.
In this embodiment, the light emitting device layer 230 includes a liquid crystal layer and a color film layer, and the display panel 100 is a liquid crystal display panel.
In this embodiment, the light emitting device layer 230 includes a cathode layer, a light emitting material layer, and an anode layer, the light emitting material layer is a self-luminous material, and the display panel is an organic light emitting semiconductor display panel.
In this embodiment, the type of the display panel is not limited.
In this embodiment, the encapsulation layer 300 further includes a first inorganic layer 310 adjacent to one side of the light emitting device layer 230, a first organic layer 330 on the first inorganic layer 310, and a second inorganic layer 320 on the first organic layer 330. The interface member 400 is disposed on the same layer as the first organic layer 330 and/or the second inorganic layer 320, specifically referring to fig. 3 and 4, wherein a dotted arrow is a water oxygen intrusion path, and an arrow is a light path. The material of the first inorganic layer 310 or the second inorganic layer 320 includes any one or a combination of silicon oxynitride, silicon nitride, and silicon oxide, the inorganic material can better block water and oxygen, and the first inorganic layer 310 and the second inorganic layer 320 are mainly used to prevent water and oxygen from invading the display panel 100. The material of the first organic layer 330 is an organic material, the organic material generally has better flexibility, and the first organic layer 330 is mainly used for relieving the bending stress of the display panel 100.
In this embodiment, the interface member 400 may be formed by masking a partial area of a mask half-etching process by using a plasma enhanced chemical vapor deposition method.
In this embodiment, the material of the interface member 400 includes any one or a combination of silicon oxynitride, silicon nitride, and silicon oxide. Wherein each element content of the material of the interface member 400 is different from each element content of the material of the second inorganic layer 320, and each element content of the material of the interface member 400 is different from each element content of the material of the first organic layer 330. Although the kind of the material of the interface member 400 may be the same as that of the material of the second inorganic layer 320, the content of each element of the material of the interface member 400 is different from that of the material of the second inorganic layer 320, thereby forming the interface member 400, and when water and oxygen invade, the two interfaces having different element contents act to extend the invasion path of water and oxygen, thereby preventing the water and oxygen from invading the display panel 100; the interface member 400 is formed by the difference between the elemental contents of the material of the interface member 400 and the elemental contents of the material of the first organic layer 330, and the two interfaces having different elemental contents may serve to extend the path of water and oxygen intrusion when water and oxygen intrude, thereby preventing the water and oxygen from intruding into the display panel 100. The kind of the material of the interface member 400 may be the same as that of the second inorganic layer 320, and a film layer having different element contents may be formed through a film forming process, which is convenient.
In this embodiment, the nitrogen element content of the material of the interface member 400 is different from the nitrogen element content of the material of the first inorganic layer 310. By controlling the content of nitrogen element, interfaces with different element contents can be conveniently formed, so as to form an interface member 400, and extend the water oxygen invasion path, thereby achieving the effect of preventing water oxygen invasion, specifically referring to fig. 3 and 4, wherein the dotted arrow is the water oxygen invasion path, and the arrow is the light path. Meanwhile, the refractive index of the interface member 400 can be effectively adjusted by the difference of the nitrogen content, the light path diverging to the periphery of the edge of the display panel 100 is changed, and the light is converged to the direction perpendicular to the display panel 100, so that the light emitting efficiency of the front angle of the display panel 100 is improved.
In this embodiment, the interface member 400 is disposed on the same layer as the first organic layer 330, and the thickness of the interface member 400 is smaller than that of the first organic layer 330. And/or the second inorganic layer 320 is disposed in a layer, the interface member 400 having a thickness less than a thickness of the second inorganic layer 320. The difference in thickness of the interface member 400 has different effects on light transmittance and spectrum, and different light control effects can be achieved.
In this embodiment, the interface member 400 is disposed in the same layer as the first organic layer 330, and the thickness of the interface member 400 is the same as that of the first organic layer 330. And/or the interface member 400 is disposed on the same layer as the second inorganic layer 320, and the thickness of the interface member 400 is the same as the thickness of the second inorganic layer 320, as shown in fig. 4. The thickness of the interface member 400 is the same as that of the film layer on the same layer, so that water and oxygen can be blocked better, the water and oxygen intrusion path can be prolonged, and the display panel can be protected.
In this embodiment, the material of the interface member 400 further includes a metal oxide or/and a polymer compound. The metal oxide may include alumina, which may provide a better barrier to water and oxygen. The polymer compound can increase the flexibility of the encapsulation layer 300 while increasing water and oxygen, and alleviate the bending stress of the display panel 100. The interface member 400 has improved composition, water and oxygen blocking, flexibility and light control effects.
In this embodiment, the refractive index of the interface member 400 is greater than the refractive index of the first inorganic layer 310, and the refractive index of the interface member 400 is less than the refractive index of the second inorganic layer 320, specifically referring to fig. 3 and 4, wherein a dotted arrow is an intrusion path of water and oxygen, and an arrow is a light path. The interface member 400 can change the light path diverging around the edge of the display panel 100, so that the light emitted by the display panel 100 is refracted or reflected under the effect of the interface member 400, and finally, the light is concentrated and emitted in the direction perpendicular to the display panel 100, thereby improving the light emitting efficiency of the front angle of the display panel 100 and improving the display effect.
In the present embodiment, the first inorganic layer 310 includes a plurality of first openings 311, and the first openings 311 are filled with the first organic layer 330, please refer to fig. 5 specifically. The first opening 311 is used to block the crease from spreading at the interface member 400, and increase the contact area between the first organic layer 330 and the first inorganic layer 310 to improve the adhesion between the first organic layer 330 and the first inorganic layer 310. By the embedded structure, the internal curling stress is released during bending, the film layer is prevented from being broken, and the flexibility of the display panel 100 is improved.
In this embodiment, the first opening 311 is disposed around the interface member 400. The first opening 311 is disposed near an edge of the display panel 100. The tortuous inorganic-organic contact surface can prolong the water and oxygen intrusion path, achieve certain water and oxygen resistance and simultaneously relieve the edge bending stress.
In this embodiment, the first opening 311 has any one of a circular shape, a square shape, and an oval shape. When the shape of the first opening 311 is an ellipse, the direction from the center of the display panel 100 to the edge of the display panel 100 is parallel to the minor axis of the ellipse, and when the display panel 100 is bent, the ellipse is drawn to be a circle, so as to better relieve the bending stress.
In this embodiment, the depth of the first opening 311 is 0.5 to 3 micrometers. The depth of the first inorganic layer 310 is 0.5 to 3 micrometers.
In this embodiment, the display panel 100 includes at least one opening region, and the first opening 311 is located in the opening region. The open pore regions may be arranged at intervals. The opening region corresponds to the bending region of the display panel 100, and through the embedded structure, the internal curling stress is released during bending, so that the film layer is prevented from being broken, and the flexibility of the display panel 100 is improved.
In this embodiment, the interface member 400 includes a plurality of interface units 410, the interface units 410 are stacked, and at least one interface unit 410 is overlapped on the adjacent interface unit 410, as shown in fig. 7. The stacked and overlapped interface units 410 can better extend the water and oxygen intrusion path, improve the water and oxygen blocking effect of the display panel 100, and protect the display panel 100.
In this embodiment, the interface units 410 are arranged at intervals, and the interface units 410 arranged at intervals can also achieve the effect of prolonging the water and oxygen intrusion path, and at the same time, can better control light, and the light emitting direction is more perpendicular to the display panel 100, so that unnecessary light emission due to the stacking effect is avoided.
In this embodiment, the interface member 400 includes at least one first interface unit 411 and at least one second interface unit 412, which are disposed in different layers, and orthogonal projections of the first interface unit 411 and the second interface unit 412 on the substrate at least partially coincide. Specifically, referring to fig. 8, the interface units 411 and 412 are disposed in different layers, and more and longer water and oxygen intrusion paths can be formed by the interface units disposed in different layers, so that the water and oxygen blocking effect of the display panel 100 is improved, and the display panel 100 is protected.
In this embodiment, in the light emitting direction of the display panel 100, the refractive index of the interface member 400 gradually increases, specifically referring to fig. 9, the dashed line in fig. 9 schematically divides the interface member 400 to represent interfaces with different refractive indexes. In the interface member 400, the light emitted from the display panel 100 gradually deflects to a direction perpendicular to the display panel 100, and the light emitted from the display panel 100 to the outside of the edge is converged to the direction perpendicular to the display panel 100, so as to improve the light emitting efficiency of the front angle of the display panel 100 and improve the display effect.
In this embodiment, in a direction from the edge of the display panel 100 to the center of the display panel 100, the thickness of the interface member 400 is increased first and then decreased, specifically referring to fig. 6. The interface member 400 is formed in a convex lens shape, and can condense light more effectively, and light rays diverging to the outside of the edge of the display panel 100 are converged to the direction perpendicular to the display panel 100, so that the light extraction efficiency of the front angle of the display panel 100 is improved, and the display effect is improved.
In this embodiment, the interface member 400 includes a plurality of first protrusions spaced apart from one side of the light emitting device layer 230. The first protrusions are similar to the convex lenses, so that light can be effectively condensed, light rays emitted to the outer edge of the display panel 100 are converged to the direction perpendicular to the display panel 100, the light emitting efficiency of the front angle of the display panel 100 is improved, and the display effect is improved.
This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
Referring to fig. 1 to 7, the present application further discloses a method for manufacturing a display panel 100, including:
s90, sequentially forming a driving circuit layer 220 and a light emitting device layer 230 on the driving circuit layer 220 on the substrate 210.
S100, forming an encapsulation layer 300 including at least one interface member 400 on the light emitting device layer 230.
The display panel 100 further includes at least one interface member 400 located in the encapsulation layer 300, the interface member 400 is located in a non-display region at the periphery of the display panel 100, and a refractive index of the interface member 100 is different from a refractive index of any film layer of the encapsulation layer 300.
This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 7, the method for manufacturing the display panel 100 includes:
s90, sequentially forming a driving circuit layer 220 and a light emitting device layer 230 on the driving circuit layer 220 on the substrate 210.
In this embodiment, the light emitting device layer 230 includes a liquid crystal layer and a color film layer, and the display panel 100 is a liquid crystal display panel.
In this embodiment, the light emitting device layer 230 includes a cathode layer, a light emitting material layer, and an anode layer, the light emitting material layer is a self-luminous material, and the display panel is an organic light emitting semiconductor display panel.
In this embodiment, the type of the display panel is not limited.
S100, forming an encapsulation layer 300 including at least one interface member 400 on the light emitting device layer 230.
In this embodiment, the interface member 400 is disposed near the edge of the display panel 100, and the interface member 400 is used to extend the intrusion path of water and oxygen, specifically referring to fig. 1 and 2, wherein 110 in fig. 2 represents a display region, and the non-display region is located outside the display region 110.
In this embodiment, step S100 includes:
s110, a first inorganic layer 310 is formed on the light emitting device layer 230.
S120, forming a first organic layer 330 on the first inorganic layer 310.
S130, forming a second inorganic layer 320 on the first organic layer 330.
In this embodiment, step S120 further includes:
s121, forming an interface member 400 on the first inorganic layer 310.
S122, forming a first organic layer 330 on the interface member 400.
In the present embodiment, the interface member 400 is disposed on the same layer as the first organic layer 330, specifically referring to fig. 4, wherein the dotted arrow is a water oxygen intrusion path, and the arrow is a light path.
In this embodiment, step S130 further includes:
s131, forming an interface member 400 on the first organic layer 330.
S132, forming a second inorganic layer 320 on the interface member 400.
In this embodiment, the interface member 400 is disposed on the same layer as the second inorganic layer 320, specifically referring to fig. 3, wherein the dotted arrow is a water oxygen intrusion path, and the arrow is a light path.
In this embodiment, the encapsulation layer 300 further includes a first inorganic layer 310 adjacent to one side of the light emitting device layer 230, a first organic layer 330 on the first inorganic layer 310, and a second inorganic layer 320 on the first organic layer 330. The interface member 400 is disposed on the same layer as the first organic layer 330 and/or the second inorganic layer 320, specifically referring to fig. 3 and 4, wherein a dotted arrow is a water oxygen intrusion path, and an arrow is a light path. The material of the first inorganic layer 310 or the second inorganic layer 320 includes any one or a combination of silicon oxynitride, silicon nitride, and silicon oxide, the inorganic material can better block water and oxygen, and the first inorganic layer 310 and the second inorganic layer 320 are mainly used to prevent water and oxygen from invading the display panel 100. The material of the first organic layer 330 is an organic material, the organic material generally has better flexibility, and the first organic layer 330 is mainly used for relieving the bending stress of the display panel 100.
In this embodiment, the interface member 400 may be formed by masking a partial area of a mask half-etching process by using a plasma enhanced chemical vapor deposition method.
In this embodiment, the material of the interface member 400 includes any one or a combination of silicon oxynitride, silicon nitride, and silicon oxide. Wherein each element content of the material of the interface member 400 is different from each element content of the material of the second inorganic layer 320, and each element content of the material of the interface member 400 is different from each element content of the material of the first organic layer 330. Although the kind of the material of the interface member 400 may be the same as that of the material of the second inorganic layer 320, the content of each element of the material of the interface member 400 is different from that of the material of the second inorganic layer 320, thereby forming the interface member 400, and when water and oxygen invade, the two interfaces having different element contents act to extend the invasion path of water and oxygen, thereby preventing the water and oxygen from invading the display panel 100; the content of each element of the material of the interface member 400 is different from the content of each element of the material of the first organic layer 330, so as to form the interface member 400, when water and oxygen invade, the two interfaces with different element contents can play a role in prolonging the invasion path of water and oxygen, so as to prevent the water and oxygen from invading the display panel 100, specifically refer to fig. 3 and 4, wherein a dotted arrow is the invasion path of water and oxygen, and an arrow is a light path. The kind of the material of the interface member 400 may be the same as that of the second inorganic layer 320, and a film layer having different element contents may be formed through a film forming process, which is convenient.
In this embodiment, the nitrogen element content of the material of the interface member 400 is different from the nitrogen element content of the material of the first inorganic layer 310. By controlling the content of nitrogen element, interfaces with different element contents can be conveniently formed, so as to form an interface member 400, and extend the water oxygen invasion path, thereby achieving the effect of preventing water oxygen invasion, specifically referring to fig. 3 and 4, wherein the dotted arrow is the water oxygen invasion path, and the arrow is the light path. Meanwhile, the refractive index of the interface member 400 can be effectively adjusted by the difference of the nitrogen content, the light path diverging to the periphery of the edge of the display panel 100 is changed, and the light is converged to the direction perpendicular to the display panel 100, so that the light emitting efficiency of the front angle of the display panel 100 is improved.
In this embodiment, the interface member 400 is disposed on the same layer as the first organic layer 330, and the thickness of the interface member 400 is smaller than that of the first organic layer 330. And/or the second inorganic layer 320 is disposed in a layer, the interface member 400 having a thickness less than a thickness of the second inorganic layer 320. The difference in thickness of the interface member 400 has different effects on light transmittance and spectrum, and different light control effects can be achieved.
In this embodiment, the interface member 400 is disposed in the same layer as the first organic layer 330, and the thickness of the interface member 400 is the same as that of the first organic layer 330. And/or the interface member 400 is disposed on the same layer as the second inorganic layer 320, and the thickness of the interface member 400 is the same as the thickness of the second inorganic layer 320, as shown in fig. 4. The thickness of the interface member 400 is the same as that of the film layer on the same layer, so that water and oxygen can be blocked better, the water and oxygen intrusion path can be prolonged, and the display panel can be protected.
In this embodiment, the material of the interface member 400 further includes a metal oxide or/and a polymer compound. The metal oxide may include alumina, which may provide a better barrier to water and oxygen. The polymer compound can increase the flexibility of the encapsulation layer 300 while increasing water and oxygen, and alleviate the bending stress of the display panel 100. The interface member 400 has improved composition, water and oxygen blocking, flexibility and light control effects.
In this embodiment, the refractive index of the interface member 400 is greater than the refractive index of the first inorganic layer 310, and the refractive index of the interface member 400 is less than the refractive index of the second inorganic layer 320, specifically referring to fig. 3 and 4, wherein a dotted arrow is an intrusion path of water and oxygen, and an arrow is a light path. The interface member 400 can change the light path diverging around the edge of the display panel 100, so that the light emitted by the display panel 100 is refracted or reflected under the effect of the interface member 400, and finally, the light is concentrated and emitted in the direction perpendicular to the display panel 100, thereby improving the light emitting efficiency of the front angle of the display panel 100 and improving the display effect.
In this embodiment, step S110 further includes:
s111, a first inorganic material is formed on the light emitting device layer 230.
S112, forming a plurality of first openings 311 on the first inorganic material.
In the present embodiment, in the subsequent steps, the first opening 311 is filled with the first organic layer 330, please refer to fig. 5 specifically.
In this embodiment, the first opening 311 is disposed around the interface member 400. The first opening 311 is disposed near an edge of the display panel 100. The tortuous inorganic-organic contact surface can prolong the water and oxygen intrusion path, achieve certain water and oxygen resistance and simultaneously relieve the edge bending stress.
In this embodiment, the first opening 311 has any one of a circular shape, a square shape, and an oval shape. When the shape of the first opening 311 is an ellipse, the direction from the center of the display panel 100 to the edge of the display panel 100 is parallel to the minor axis of the ellipse, and when the display panel 100 is bent, the ellipse is drawn to be a circle, so as to better relieve the bending stress.
In this embodiment, the depth of the first opening 311 is 0.5 to 3 micrometers. The depth of the first inorganic layer 310 is 0.5 to 3 micrometers.
In this embodiment, the display panel 100 includes at least one opening region, and the first opening 311 is located in the opening region. The open pore regions may be arranged at intervals. The opening region corresponds to the bending region of the display panel 100, and through the embedded structure, the internal curling stress is released during bending, so that the film layer is prevented from being broken, and the flexibility of the display panel 100 is improved.
In this embodiment, the interface member 400 includes a plurality of interface units 410, the interface units 410 are stacked, and at least one interface unit 410 is overlapped on the adjacent interface unit 410, as shown in fig. 7. The stacked and overlapped interface units 410 can better extend the water and oxygen intrusion path, improve the water and oxygen blocking effect of the display panel 100, and protect the display panel 100.
In this embodiment, the interface units 410 are arranged at intervals, and the interface units 410 arranged at intervals can also achieve the effect of prolonging the water and oxygen intrusion path, and at the same time, can better control light, and the light emitting direction is more perpendicular to the display panel 100, so that unnecessary light emission due to the stacking effect is avoided.
In this embodiment, the interface member 400 includes at least one first interface unit 411 and at least one second interface unit 412, which are disposed in different layers, and orthogonal projections of the first interface unit 411 and the second interface unit 412 on the substrate at least partially coincide. Specifically, referring to fig. 8, the interface units 411 and 412 are arranged in different layers, and more longer water and oxygen intrusion paths can be formed by the interface units arranged in different layers, so that the water and oxygen blocking effect of the display panel 100 is improved, and the display panel 100 is protected.
In this embodiment, in the light emitting direction of the display panel 100, the refractive index of the interface member 400 gradually increases, specifically referring to fig. 9, the dashed line in fig. 9 schematically divides the interface member 400 to represent interfaces with different refractive indexes. In the interface member 400, the light emitted from the display panel 100 gradually deflects to a direction perpendicular to the display panel 100, and the light emitted from the display panel 100 to the outside of the edge is converged to the direction perpendicular to the display panel 100, so as to improve the light emitting efficiency of the front angle of the display panel 100 and improve the display effect.
In this embodiment, in a direction from the edge of the display panel 100 to the center of the display panel 100, the thickness of the interface member 400 is increased first and then decreased, specifically referring to fig. 6. The interface member 400 is formed in a convex lens shape, and can condense light more effectively, and light rays diverging to the outside of the edge of the display panel 100 are converged to the direction perpendicular to the display panel 100, so that the light extraction efficiency of the front angle of the display panel 100 is improved, and the display effect is improved.
In this embodiment, the interface member 400 includes a plurality of first protrusions spaced apart from one side of the light emitting device layer 230. The first protrusions are similar to the convex lenses, so that light can be effectively condensed, light rays emitted to the outer edge of the display panel 100 are converged to the direction perpendicular to the display panel 100, the light emitting efficiency of the front angle of the display panel 100 is improved, and the display effect is improved.
This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
The application also discloses a display device comprising the display panel 100 as any one of the above.
Please refer to the above-mentioned embodiments of the display panel 100 and fig. 1 to 9 for a specific structure of the display panel 100, which is not described herein again.
The application discloses a display panel and a display device. The display panel comprises a substrate, a driving circuit layer positioned on the substrate, a light-emitting device layer positioned on the driving circuit layer, a packaging layer positioned on the light-emitting device layer and a cover plate layer positioned on the packaging layer; the display panel also comprises at least one interface component positioned in the packaging layer, the interface component is positioned in a non-display area at the periphery of the display panel, and the refractive index of the interface component is different from that of any film layer of the packaging layer. This application forms the contact interface of different refracting indexes through set up the interface member in the encapsulated layer, has prolonged the invasion route to water oxygen, has improved display device's separation water oxygen ability, has prolonged display device's life.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. A display panel is characterized by comprising a substrate, a driving circuit layer positioned on the substrate, a light-emitting device layer positioned on the driving circuit layer, an encapsulation layer positioned on the light-emitting device layer and a cover plate layer positioned on the encapsulation layer;
the display panel further comprises at least one interface component positioned in the packaging layer, the interface component is positioned in a non-display area at the periphery of the display panel, and the refractive index of the interface component is different from that of any film layer of the packaging layer.
2. The display panel according to claim 1, wherein the encapsulation layer comprises a first inorganic layer on a side close to the light emitting device layer, a first organic layer on the first inorganic layer, and a second inorganic layer on the first organic layer;
the interface member is disposed in a layer with the first organic layer and/or the second inorganic layer.
3. The display panel according to claim 2, wherein the material of the interface member includes any one or a combination of silicon oxynitride, silicon nitride, and silicon oxide;
wherein a content of each element of the material of the interface member is different from a content of each element of the material of the first organic layer, and a content of each element of the material of the interface member is different from a content of each element of the material of the second inorganic layer.
4. The display panel according to claim 2, wherein the interface member has a refractive index larger than that of the first inorganic layer, and the interface member has a refractive index smaller than that of the second inorganic layer.
5. The display panel according to claim 2, wherein the interface member is disposed in the same layer as the first organic layer, and a thickness of the interface member is the same as a thickness of the first organic layer;
or the interface member and the second inorganic layer are arranged on the same layer, and the thickness of the interface member is the same as that of the second inorganic layer.
6. The display panel of claim 1, wherein the interface member comprises a plurality of interface units, the plurality of interface units are stacked, and at least one of the interface units overlaps an adjacent interface unit.
7. The display panel of claim 1, wherein the interface member comprises at least one first interface unit and at least one second interface unit arranged in different layers, and an orthographic projection of the first interface unit and the orthographic projection of the second interface unit on the substrate are at least partially overlapped.
8. The display panel according to claim 1, wherein a refractive index of the interface member gradually increases in a light exit direction of the display panel.
9. The display panel according to claim 1, wherein the interface member increases in thickness and then decreases in thickness in a direction from an edge of the display panel to a center of the display panel.
10. A display device comprising the display panel according to any one of claims 1 to 9.
CN202011278594.4A 2020-11-16 2020-11-16 Display panel and display device Pending CN112420947A (en)

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