CN109638055A - Organic light-emitting display panel, preparation method and display device - Google Patents
Organic light-emitting display panel, preparation method and display device Download PDFInfo
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- CN109638055A CN109638055A CN201811550314.3A CN201811550314A CN109638055A CN 109638055 A CN109638055 A CN 109638055A CN 201811550314 A CN201811550314 A CN 201811550314A CN 109638055 A CN109638055 A CN 109638055A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000010409 thin film Substances 0.000 claims abstract description 26
- 238000005538 encapsulation Methods 0.000 claims abstract description 23
- 239000010410 layer Substances 0.000 claims description 302
- 239000012044 organic layer Substances 0.000 claims description 86
- 239000000463 material Substances 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 11
- 150000001491 aromatic compounds Chemical class 0.000 claims description 11
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 8
- 229910010272 inorganic material Inorganic materials 0.000 claims description 8
- 239000011147 inorganic material Substances 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000001272 nitrous oxide Substances 0.000 claims description 4
- 229910000077 silane Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000002210 silicon-based material Substances 0.000 claims 1
- 238000004073 vulcanization Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 30
- 239000010408 film Substances 0.000 description 18
- 238000000605 extraction Methods 0.000 description 15
- 229910020286 SiOxNy Inorganic materials 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 4
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the invention discloses an organic light-emitting display panel, a preparation method and a display device. The organic light emitting display panel includes a substrate; a pixel defining layer on one side of the substrate, the pixel defining layer including a plurality of opening regions; a plurality of organic light emitting devices disposed in the opening regions corresponding to the pixel defining layers; a thin film encapsulation layer covering the pixel defining layer and the organic light emitting device, the thin film encapsulation layer including a first multilayer; wherein, in an opening area edge tilt region of the pixel defining layer, the refractive index of at least one layer of the first plurality of layers increases in a first direction; the first direction is a direction in which the substrate faces the pixel defining layer. According to the technical scheme of the embodiment of the invention, the oblique light with a larger included angle with the direction vertical to the display panel deflects to the direction vertical to the display panel due to the refraction effect, so that the emergent light is facilitated, the light emergent amount is increased, the light emergent efficiency of the organic light-emitting device is improved, and the performance of the organic light-emitting display panel is improved.
Description
Technical field
The present embodiments relate to display technology more particularly to a kind of organic light emitting display panels, preparation method and display
Device.
Background technique
Organic Light Emitting Diode (OLED, Organic Light-Emitting Diode) display technology have self-luminous,
Many advantages, such as wide viewing angle, contrast height, small power consumption, fast response time, widely applied to mobile phone, DV,
Each display fields such as personal digital assistant (PDA), laptop, automobile audio and TV.
In the prior art, OLED generally comprises substrate, cathode, electron transfer layer, luminescent layer, hole transmission layer and sun
Pole.When work, apply a bias voltage between the anode and cathode of OLED, hole and electronics are respectively from hole transmission layer and electricity
Sub- transport layer is migrated to luminescent layer, and on the light-emitting layer, the compound generation exciton of electrons and holes, exciton is unstable, is given off energy,
The molecule for transferring energy to organic luminescent substance in luminescent layer, makes it from ground state transition to excitation state.Excitation state is very unstable,
Excited molecule returns to ground state from excitation state, radiation transistion and generate luminescence phenomenon.Since organic light emitting display panel includes multilayer
Structure, such as the thin-film encapsulation layer for preventing water oxygen from invading, the light that the luminescent layer of OLED issues, may be limited in organic light emission
Inside the film layer of display panel, light extraction efficiency is influenced.
Summary of the invention
The embodiment of the present invention provides a kind of organic light emitting display panel, preparation method and display device, to improve OLED's
Light extraction efficiency promotes the performance of organic light emitting display panel.
In a first aspect, the embodiment of the present invention provides a kind of organic light emitting display panel, comprising:
Substrate；
Pixel confining layer is located at the substrate side, and the pixel confining layer includes multiple open regions；
Multiple organic luminescent devices, the organic luminescent device are set in the corresponding open region of the pixel confining layer；
Thin-film encapsulation layer, covers the pixel confining layer and the organic luminescent device, and the thin-film encapsulation layer includes the
One multilayer；
Wherein, at least one layer of folding in the opening area edge tilting zone of the pixel confining layer, first multilayer
Rate is penetrated to be incremented by along first direction；
The first direction is the substrate towards the direction of the pixel confining layer.
Second aspect, the embodiment of the present invention also provide a kind of preparation method of organic light emitting display panel, comprising:
One substrate is provided；
Pixel confining layer is formed in the side of the substrate, the pixel confining layer includes multiple open regions；
Form organic luminescent device and thin-film encapsulation layer；
Wherein, the organic luminescent device is located in the corresponding open region of the pixel confining layer, the thin-film encapsulation layer
Including the first multilayer, positioned at the opening area edge tilting zone of the pixel confining layer, first multilayer it is at least one layer of
Refractive index is incremented by along first direction, and the first direction is the substrate towards the direction of the pixel confining layer.
The third aspect, the embodiment of the present invention also provide a kind of display device, including above-mentioned organic light emitting display panel.
Organic light emitting display panel provided in an embodiment of the present invention, comprising: substrate；Pixel confining layer is located at substrate side,
Pixel confining layer includes multiple open regions；Multiple organic luminescent devices, it is corresponding that organic luminescent device is set to pixel confining layer
In open region；Thin-film encapsulation layer, covers pixel confining layer and organic luminescent device, and thin-film encapsulation layer includes the first multilayer；Wherein,
At least one layer of refractive index is incremented by along first direction in the opening area edge tilting zone of pixel confining layer, the first multilayer；The
One direction is direction of the substrate towards pixel confining layer.Pass through the film envelope of setting pixel confining layer opening area edge tilting zone
Fill layer the first multilayer at least one layer of refractive index along first direction be incremented by so that organic luminescent device outgoing with perpendicular to
The biggish oblique light in display panel angular separation is conducive to light since refraction action is to perpendicular to display panel direction deviation
Outgoing improve the light extraction efficiency of organic luminescent device to increase amount of light, promote the property of organic light emitting display panel
Energy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 2 is the optical path that a kind of light provided in an embodiment of the present invention is propagated between the film layer that inclined refractive index is incremented by
Schematic diagram；
Fig. 3 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Figure 12 is the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention；
Figure 13 is a kind of flow diagram of the preparation method of organic light emitting display panel provided in an embodiment of the present invention；
Figure 14 is a kind of step schematic diagram for forming the first inorganic layer provided in an embodiment of the present invention；
Figure 15 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.It should be noted that the nouns of locality such as "upper", "lower" described in the embodiment of the present invention, "left", "right" are with attached drawing institute
The angle shown should not be construed as the restriction to the embodiment of the present invention come what is be described.Furthermore within a context, it is also necessary to understand
, when mentioning an element and being formed on "above" or "below" another element, another can not only be formed directly into
Perhaps "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower" for element "upper".Term " first ",
" second " etc. is used for description purposes only, and is not offered as any sequence, quantity or importance, and is used only to distinguish different groups
At part.For the ordinary skill in the art, tool of the above-mentioned term in of the invention can be understood with concrete condition
Body meaning.
Fig. 1 show a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention.With reference to Fig. 1,
The organic light emitting display panel includes: substrate 10；Pixel confining layer 20, is located at 10 side of substrate, and pixel confining layer 20 includes more
A open region；Multiple organic luminescent devices 30, organic luminescent device 30 are set in the corresponding open region of pixel confining layer 20；It is thin
Film encapsulated layer 40, covers pixel confining layer 20 and organic luminescent device 30, and thin-film encapsulation layer 40 includes the first multilayer 41；Wherein,
At least one layer of refractive index is along first direction x in the opening area edge tilting zone 21 of pixel confining layer 20, the first multilayer 41
It is incremented by；First direction x is substrate 10 towards the direction of pixel confining layer 20.
Wherein, substrate 10 can be rigid substrates, such as glass；It may be flexible base board, such as polyimides (PI).
Pixel confining layer 20 includes multiple open regions, for limiting multiple pixel regions, each open region be correspondingly arranged one it is organic
Luminescent device 30, it is merely exemplary in Fig. 1 that an open region and an organic luminescent device 30 are shown.It is understood that having
Machine light-emitting display device 30 may include feux rouges organic luminescent device, green light organic luminescent device and blue light organic emissive device,
Rgb pixel unit is formed using three kinds of organic luminescent devices.Thin-film encapsulation layer 40 is covered on pixel confining layer 20 and organic light emission
30 top of device has the effect of preventing water oxygen invasion, extends 30 service life of organic luminescent device.Illustratively, the first multilayer 41
It may include three-decker, the stepped construction of inorganic layer, organic layer, inorganic layer can be followed successively by from top to bottom.
With reference to Fig. 1, in the prior art, the thickness of pixel confining layer 20 is generally 1 μm~2 μm, organic luminescent device 30
Thickness is generally 0.2 μm~0.3 μm, i.e. the thickness of pixel confining layer 20 thickness that is greater than organic luminescent device 30, therefore pixel
The opening area edge of confining layers 20 will form tilting zone 21, and what organic light emitting display was issued presss from both sides with first direction x
The biggish light a in angle can be totally reflected at the interface of certain film layers, to make organic luminescent device 30 among the first multilayer 41
Light extraction efficiency reduce.Illustratively, the film layer of the closest opening of pixel confining layer 20 area edge tilting zone 21 can be set
Refractive index along first direction x be incremented by, then the direction of propagation of light a ' compared with light a when refractive index does not change, with
The angle of first direction x is obviously reduced, and is more conducive to the outgoing of light, to increase amount of light, improves organic luminescent device
Light extraction efficiency, promote the performance of organic light emitting display panel.
Fig. 2 show what a kind of light provided in an embodiment of the present invention was propagated between the film layer that inclined refractive index is incremented by
Light path schematic diagram, from the law of refraction: n1sinθ1=n2sinθ2=n3sinθ3=n4sinθ4=n5sinθ5, when different film layers
Refractive index is incremented by the x-direction, i.e. n1<n2<n3<n4<n5When, it can derive θ1>θ2>θ3>θ4>θ5, i.e., light is gradually to first party
It is deflected to x.To by least one layer of in the first multilayer 41 of the opening area edge tilting zone of setting pixel confining layer 20
Refractive index is incremented by along first direction, effectively improves the light extraction efficiency of organic luminescent device.
The technical solution of the embodiment of the present invention passes through the thin-film package of setting pixel confining layer opening area edge tilting zone
Layer the first multilayer 41 at least one layer of refractive index along first direction x be incremented by so that organic luminescent device outgoing with it is vertical
In the biggish oblique light in display panel angular separation since refraction action is to perpendicular to display panel direction deviation, reduce light
Total reflection of the line at film layer interface improves the light extraction efficiency of organic luminescent device to increase amount of light, is promoted organic
The performance of light emitting display panel.
Fig. 3 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
3, optionally, the first multilayer includes the first inorganic layer 411, in the opening area edge tilting zone of pixel confining layer 20, the first nothing
The refractive index of machine layer 411 is incremented by along first direction.
Illustratively, the first inorganic layer 411 of the open edge tilting zone of pixel confining layer 20 can be for along first party
It is gradually increased to x refractive index, Fig. 3 also shows light path schematic diagram of the light b by the first inorganic layer 411 when.
It should be noted that when it is implemented, the refractive index of entire first inorganic layer 411 can also be arranged along first direction
X is incremented by, and illustratively, Fig. 4 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.
With reference to Fig. 4, when the refractive index of entire first inorganic layer 411 is incremented by along first direction x, light c is in the first inorganic layer 411 along figure
Show that direction is propagated.
It optionally, include that at least two sons are inorganic in the first inorganic layer of the opening area edge tilting zone of pixel confining layer
Layer, the refractive index of multiple sub- inorganic layers are incremented by successively along first direction.
Fig. 5 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
The first inorganic layer 411 that the opening area edge tilting zone of pixel confining layer 20 is illustratively shown in 5, Fig. 5 includes the first son
Inorganic layer 4111 and the second sub- inorganic layer 4112, wherein the refractive index n of the second sub- inorganic layer 41122Greater than the first sub- inorganic layer
4111 refractive index n1, light d is when by the interface of the second sub- inorganic layer 4112 and the first sub- inorganic layer 4111, due to n2>
n1, light deflects to vertical direction, can effectively reduce light in the incidence angle of film layer interface, improve light extraction efficiency.
Fig. 6 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
6, it is different from Fig. 5 to be, in 20 open region side of pixel confining layer, 20 side of organic luminescent device 30 and pixel confining layer in Fig. 6
There are the first sub- inorganic layer 4111 between wall, the high angle scattered light e that pixel edge is emitted under the structure passes through gradually changed refractive index
First inorganic layer 411 is deflected to vertical direction, improves the light extraction efficiency of organic luminescent device 30.
Fig. 7 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
7,411 flood of the first inorganic layer is divided into multiple sub- inorganic layers, and Fig. 7 illustratively shows four sub- inorganic layers.Organic luminescent device
The 30 light f issued are incident on sub- inorganic layer 4112 from sub- inorganic layer 4111, unirefringence occur, is then incident on open region
The interface of tilting zone inorganic layer 4111 and sub- inorganic layer 4112, since the refractive index of sub- inorganic layer is passed along first direction x
Increase, i.e., sub- 4111 refractive index of inorganic layer is less than the refractive index of sub- inorganic layer 4112, and light f is from optically denser medium to optically thinner medium at this time
Incidence, when angle of incidence of light is greater than critical angle, it may occur that total reflection.Light f after being totally reflected is deflected to vertical direction, is had
Conducive to being emitted to outside display panel for light, to improve the light extraction efficiency of organic luminescent device 30.
It is understood that the number of plies of sub- inorganic layer is more, the light by tilting zone interface is more, improvement
It is more obvious.In addition, the number of plies of sub- inorganic layer is more, the specific refractivity of the adjacent electrodeless layer of son is smaller, and then reduces sub- inorganic layer
The reflectivity of interface increases transmissivity.Can the first inorganic layer 411 opening area edge tilting zone and open region in all
Variations in refractive index is set, because film-forming process (such as CVD, ALD etc.) is all to form film layer in a thickness direction layer by layer,
Film quality in same layer selects identical material, and manufacture craft is simple, it is easy to accomplish.
It is understood that when forming the incremental sub- inorganic layer of refractive index, difference that can be incremented by successively with refractive index
Inorganic material is formed；It can also form what refractive index was incremented by by a kind of doping of control a certain element in inorganic material
Sub- inorganic layer.
Optionally, the refringence of two neighboring sub- inorganic layer is less than or equal to 0.1.
It is understood that the refringence between two neighboring sub- inorganic layer is smaller, light is handed in different sub- inorganic layers
The reflectivity at interface is lower, and in the present embodiment, the refringence that two neighboring sub- inorganic layer is arranged is less than or equal to 0.1, can
To effectively improve the light extraction efficiency of organic luminescent device.
Optionally, the first inorganic layer 411 includes silicon oxy-nitride material, and the content of nitrogen is increased along first direction.
It is understood that silicon oxynitride (SiOxNy) material is the common used material for making thin-film encapsulation layer, wherein nitrogen
Ratio it is higher, the refractive index of material is bigger.First inorganic layer 411 may include multiple sub- inorganic layers, wherein near base
The sub- inorganic layer of the first of plate can be SiO, and the second sub- inorganic layer can be SiON, the nitrogen in the sub- inorganic layer of substrate
Content it is higher.When the gradually changed refractive index of the first inorganic layer 411, it is believed that countless sub- inorganic layers of setting, then first is inorganic
The interface of sub- inorganic layer is not present in layer 411, the light reflection that can be further reduced inside the first inorganic layer 411.
Fig. 8 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
8, optionally, the first multilayer includes the first organic layer 412, and in the opening area edge tilting zone of pixel confining layer 20, first has
The refractive index of machine layer 412 is incremented by along first direction.
Illustratively, the first organic layer 412 of the open edge tilting zone of pixel confining layer 20 can be for along first party
It is gradually increased to x refractive index, Fig. 8 also shows light path schematic diagram of the light g by the first organic layer 412 when.
It should be noted that when it is implemented, the refractive index of entire first organic layer 412 can also be arranged along first direction
X is incremented by, and illustratively, Fig. 9 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.
With reference to Fig. 9, when the refractive index of entire first organic layer 412 is incremented by along first direction x, light h is in the first organic layer 412 along figure
Show that direction is propagated.
It optionally, include that at least two sons are organic in the first organic layer of the opening area edge tilting zone of pixel confining layer
Layer, the refractive index of sub- organic layer are incremented by successively along first direction.
Figure 10 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
First organic layer 412 is illustratively shown in 10, Figure 10 and includes the first sub- organic layer 4121 and the second sub- organic layer 4122, wherein
The refractive index n of second sub- organic layer 41224Greater than the refractive index n of the first sub- organic layer 41213, biggish with first direction x angle
Light is when by the interface of the second sub- organic layer 4122 and the first sub- organic layer 4121, due to n4>n3, light is to first party
It deflects to x, light can be effectively reduced in the incidence angle of film layer interface, improve light extraction efficiency.It is understood that because
It is all to form film layer in a thickness direction layer by layer when for organic layer is deposited, the film quality in same layer selects identical material
Material, manufacture craft are simple, it is easy to accomplish.
It should be noted that it includes two sub- organic layers that only example, which shows the first organic layer 412, in Figure 10, first is organic
Layer 412 can be divided into multiple sub- inorganic layers, and the number of plies of sub- organic layer is more, and light is got over by the light of tilting zone interface
More, improvement is more obvious.In addition, the number of plies of sub- organic layer is more, adjacent son has the specific refractivity of pole layer smaller, and then drops
The reflectivity of low sub- organic layer interface increases transmissivity.
It is understood that when forming the incremental sub- organic layer of refractive index, difference that can be incremented by successively with refractive index
Organic material is formed, and can also be adulterated the concentration of another material in a kind of organic material by controlling, be formed refractive index and pass
The sub- organic layer increased.
Optionally, the refringence of two adjacent sub- organic layers is less than or equal to 0.1.
It is understood that the refringence of two neighboring sub- organic layer is smaller, light is in different sub- organic layer interfaces
Reflectivity it is lower, in the present embodiment, the refringence that two neighboring sub- organic layer is arranged is less than or equal to 0.1, Ke Yiyou
Effect improves the light extraction efficiency of organic luminescent device.
Optionally, the first organic layer 412 is doped with sulfide or aromatic compound, and sulfide or aromatic compound
Doping along first direction increase.
It is understood that the refractive index of material can be improved in doping sulfide or aromatic compound in organic layer,
And doping is higher, the refractive index of material is bigger, and the first organic layer may include multiple sub- organic layers, wherein near substrate
The first sub- organic layer can undope sulfide or aromatic compound, the second sub- organic layer can adulterate sulfide or fragrance
Compounds of group, adulterates sulfide in the sub- organic layer of substrate or the doping concentration of aromatic compound is higher.First has
When the gradually changed refractive index of machine layer 412, it is believed that countless sub- organic layers of setting, then there is no sons to have in the first organic layer 412
The interface of machine layer, the light reflection that can be further reduced inside the first organic layer 412.
Optionally, the first multilayer includes at least one inorganic layer and at least one organic layer, in the opening of pixel confining layer
The inorganic layer of area edge tilting zone and the refractive index of organic layer are incremented by successively along first direction.
Figure 11 show the structural schematic diagram of another organic light emitting display panel provided in an embodiment of the present invention.With reference to figure
11, the first multilayer includes an inorganic layer 413 and an organic layer 414, in the opening area edge angled section of pixel confining layer 20
The inorganic layer 413 in domain and the refractive index of organic layer 414 are incremented by successively along first direction.
It is understood that in the specific implementation, the opening area edge inclination of pixel confining layer 20 optionally can be set
The refractive index of the organic layer 414 in region is greater than the refractive index of inorganic layer 413, and at least one layer of inorganic layer 413 and organic layer 414
Internal refractive index is also incremented by along first direction x.Also having for the opening area edge tilting zone of pixel confining layer 20 can be set
The refractive index of machine layer 414 is less than or equal to the refractive index of inorganic layer 413, inside inorganic layer 413 and at least one layer of organic layer 414
Refractive index is incremented by along first direction x.It includes that at least two sub- inorganic layers and/or organic layer 414 wrap that inorganic layer 413, which can also be arranged,
At least two sub- organic layers are included, the structure that Figure 12 show another organic light emitting display panel provided in an embodiment of the present invention is shown
It is intended to.It includes two sub- inorganic layers that Figure 12, which illustratively shows inorganic layer 413, and organic layer 414 includes two sub- organic layers, both may be used
20 open region tilting zone gradually changed refractive index of pixel confining layer is only arranged, flood gradually changed refractive index also can be set.
Optionally, the refringence of inorganic layer and organic layer is less than or equal to 0.1.
It is less than or equal to 0.1 by the refringence of setting inorganic layer and organic layer, light can be effectively reduced in film layer
The reflection of interface improves the light extraction efficiency of organic luminescent device.
Figure 13 show a kind of process signal of the preparation method of organic light emitting display panel provided in an embodiment of the present invention
Figure.With reference to Figure 13, preparation method provided in an embodiment of the present invention includes:
Step S110, a substrate is provided.
Wherein, substrate can be rigid substrates, such as glass, or flexible base board, such as polyimides (PI), this
Inventive embodiments are not construed as limiting the material of substrate.
Step S120, pixel confining layer is formed in the side of substrate, pixel confining layer includes multiple open regions.
Wherein, pixel confining layer can use organic material, and thickness can be 1 μm~2 μm, and pixel confining layer includes more
A open region, forms organic luminescent device in open region.
Step S130, organic luminescent device and thin-film encapsulation layer are formed.
Wherein, organic luminescent device is located in the corresponding open region of pixel confining layer, and thin-film encapsulation layer includes the first multilayer,
Positioned at the opening area edge tilting zone of pixel confining layer, at least one layer of refractive index of the first multilayer is incremented by along first direction,
First direction is direction of the substrate towards pixel confining layer.Organic luminescent device may include feux rouges organic luminescent device, green light
Organic luminescent device and blue light organic emissive device, three kinds of organic luminescent devices form rgb pixel unit.Thin-film encapsulation layer covering
Above pixel confining layer and organic luminescent device, having prevents water oxygen from invading, and extends the effect of organic light-emitting device life period.Show
Example property, the first multilayer may include three-decker, can be followed successively by the stacking of inorganic layer, organic layer, inorganic layer from top to bottom
Structure.
It should be noted that when it is implemented, organic luminescent device first can be formed in the open region of pixel confining layer,
Then the thin-film encapsulation layer for forming covering pixel confining layer and organic luminescent device, can also be initially formed the first of thin-film encapsulation layer
Then an inorganic layer in multilayer removes the inorganic layer in open region, re-forms organic luminescent device, then re-form film
Other film layers of encapsulated layer, so that thin-film encapsulation layer realizes that refractive index is passed along first direction in opening area edge tilting zone
Increase.
The technical solution of the embodiment of the present invention passes through the thin-film package of setting pixel confining layer opening area edge tilting zone
At least one layer of refractive index is incremented by along first direction in first multilayer of layer so that organic luminescent device outgoing with perpendicular to aobvious
Show that the biggish oblique light in panel angular separation since refraction action is to perpendicular to display panel direction deviation, reduces light and exists
Total reflection at film layer interface improves the light extraction efficiency of organic luminescent device to increase amount of light, promotes organic light emission
The performance of display panel.
Optionally, the first multilayer includes the first inorganic layer；First inorganic layer includes silicon oxy-nitride material, by forming the
The volume ratio of ammonia in the mixed gas of silane, ammonia and nitrous oxide is gradually increased when one inorganic layer, so that in pixel
The refractive index of first inorganic layer of the opening area edge tilting zone of confining layers is incremented by along first direction.
It is understood that silicon oxynitride (SiOxNy) material is the common used material for making thin-film encapsulation layer, wherein nitrogen
Ratio it is higher, the refractive index of material is bigger, can be formed by the mixed gas of silane, ammonia and nitrous oxide
SiOxNyLayer is forming SiOxNyDuring layer, by being gradually increased in silane, ammonia and the mixed gas of nitrous oxide
The volume ratio of ammonia, so that SiOxNyThe ratio of nitrogen gradually rises in layer, tilts in the opening area edge of pixel confining layer
The refractive index of first inorganic layer in region is incremented by along first direction.
Optionally, the first multilayer includes the first inorganic layer, and the first inorganic layer includes at least two sub- inorganic layers；
Positioned at the opening area edge tilting zone of pixel confining layer, at least one layer of refractive index of the first multilayer is along first direction
It is incremented by and includes:
S11, the first sub- inorganic material layer is formed on pixel confining layer surface.
S12, removal are located at the first sub- inorganic material layer in the open region of pixel confining layer, form patterned first son
Inorganic layer.
S13, organic luminescent device is formed in the open region of pixel confining layer.
S14, the second sub- inorganic layer is formed on pixel confining layer surface.
Wherein, refractive index of the refractive index of the first sub- inorganic layer less than the second sub- inorganic layer.
Illustratively, Figure 14 show a kind of step schematic diagram for forming the first inorganic layer provided in an embodiment of the present invention.
With reference to Figure 14, the sub- inorganic material layer (S11) of refractive index lower first first is formed on pixel confining layer surface, then removal is located at
The first sub- inorganic material layer in the open region of pixel confining layer forms patterned first sub- inorganic layer (S12), then in picture
Organic luminescent device (S13) is formed in the open region of plain confining layers, finally forms high index on pixel confining layer surface
Second sub- inorganic layer (s14).
It should be noted that when the first inorganic layer includes more sub- inorganic layers, it can also be to the second sub- inorganic layer figure
Case re-forms more sub- inorganic layers.If the first inorganic layer flood is multiple sub- inorganic layers, need to be initially formed organic illuminator
Then part sequentially forms each sub- inorganic layer above pixel confining layer and organic luminescent device.
Optionally, the first multilayer includes the first organic layer；By be gradually increased when forming the first organic layer sulfide or
The doping of aromatic compound, so that the refractive index of the first organic layer in the opening area edge tilting zone of pixel confining layer
It is incremented by successively along first direction.
It is understood that the refractive index of material can be improved in doping sulfide or aromatic compound in organic layer,
And doping is higher, and the refractive index of material is bigger, by the way that the doping of sulfide or aromatic compound is gradually increased, so that
It is incremented by successively along first direction in the first organic layer of the opening area edge tilting zone of pixel confining layer.
Optionally, the first multilayer includes the first organic layer, and the first organic layer includes at least two sub- organic layers；Positioned at pixel
At least one layer of refractive index of the opening area edge tilting zone of confining layers, the first multilayer is incremented by along first direction, comprising:
The first sub- organic layer and the second sub- organic layer are sequentially formed above pixel confining layer；
Refractive index of the refractive index of first sub- organic layer less than the second sub- organic layer.
It can also be patterned when it is understood that forming multiple sub- organic layers, only make pixel confining layer open region
The refractive index of tilting zone is incremented by along first direction.
Figure 15 show a kind of structural schematic diagram of display device provided in an embodiment of the present invention.Referring to Figure 15, the display
Device 1 includes any one organic light emitting display panel 2 provided in an embodiment of the present invention.The display device 1 is specifically as follows hand
Mechanical, electrical brain and intelligent wearable device etc..
Since display device provided in an embodiment of the present invention includes that any one organic light emission provided by the above embodiment is aobvious
Show panel, there is technical effect identical or corresponding with above-mentioned organic light emitting display panel, this will not be detailed here.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (17)
1. a kind of organic light emitting display panel characterized by comprising
Substrate；
Pixel confining layer is located at the substrate side, and the pixel confining layer includes multiple open regions；
Multiple organic luminescent devices, the organic luminescent device are set in the corresponding open region of the pixel confining layer；
Thin-film encapsulation layer, covers the pixel confining layer and the organic luminescent device, and the thin-film encapsulation layer includes more than first
Layer；
Wherein, at least one layer of refractive index in the opening area edge tilting zone of the pixel confining layer, first multilayer
It is incremented by along first direction；
The first direction is the substrate towards the direction of the pixel confining layer.
2. organic light emitting display panel according to claim 1, which is characterized in that first multilayer includes first inorganic
Layer, in the opening area edge tilting zone of the pixel confining layer, the refractive index of first inorganic layer is along the first direction
It is incremented by.
3. organic light emitting display panel according to claim 2, which is characterized in that in the open region of the pixel confining layer
First inorganic layer of edge tilting zone includes at least two sub- inorganic layers, and the refractive index of multiple sub- inorganic layers is along described the
One direction is incremented by successively.
4. organic light emitting display panel according to claim 3, which is characterized in that the folding of the two neighboring sub- inorganic layer
Rate difference is penetrated less than or equal to 0.1.
5. organic light emitting display panel according to claim 2, which is characterized in that first inorganic layer includes nitrogen oxidation
Silicon materials, and the content of nitrogen is increased along the first direction.
6. organic light emitting display panel according to claim 1, which is characterized in that first multilayer includes first organic
Layer, in the opening area edge tilting zone of the pixel confining layer, the refractive index of first organic layer is along the first direction
It is incremented by.
7. organic light emitting display panel according to claim 6, which is characterized in that in the open region of the pixel confining layer
First organic layer of edge tilting zone includes at least two sub- organic layers, and the refractive index of the sub- organic layer is along described the
One direction is incremented by successively.
8. organic light emitting display panel according to claim 7, which is characterized in that the folding of two adjacent sub- organic layers
Rate difference is penetrated less than or equal to 0.1.
9. organic light emitting display panel according to claim 6, which is characterized in that first organic layer is doped with vulcanization
Object or aromatic compound, and the doping of the sulfide or the aromatic compound increases along the first direction.
10. organic light emitting display panel according to claim 1, which is characterized in that
First multilayer includes at least one inorganic layer and at least one organic layer,
In the inorganic layer of the opening area edge tilting zone of the pixel confining layer and the refractive index of the organic layer along institute
It is incremented by successively to state first direction.
11. organic light emitting display panel according to claim 10, which is characterized in that
The refringence of the inorganic layer and the organic layer is less than or equal to 0.1.
12. a kind of preparation method of organic light emitting display panel characterized by comprising
One substrate is provided；
Pixel confining layer is formed in the side of the substrate, the pixel confining layer includes multiple open regions；
Form organic luminescent device and thin-film encapsulation layer；
Wherein, the organic luminescent device is located in the corresponding open region of the pixel confining layer, and the thin-film encapsulation layer includes
First multilayer, positioned at the opening area edge tilting zone of the pixel confining layer, at least one layer of refraction of first multilayer
Rate is incremented by along first direction, and the first direction is the substrate towards the direction of the pixel confining layer.
13. preparation method according to claim 12, which is characterized in that first multilayer includes the first inorganic layer；Institute
Stating the first inorganic layer includes silicon oxy-nitride material, by the way that silane, ammonia and one are gradually increased when forming first inorganic layer
The volume ratio of ammonia in the mixed gas of nitrous oxide, so that in the opening area edge tilting zone of the pixel confining layer
The refractive index of first inorganic layer is incremented by along the first direction.
14. preparation method according to claim 12, which is characterized in that first multilayer includes the first inorganic layer, institute
Stating the first inorganic layer includes at least two sub- inorganic layers；
Positioned at the opening area edge tilting zone of the pixel confining layer, at least one layer of refractive index of first multilayer is along
One direction is incremented by, comprising:
The first sub- inorganic material layer is formed on the pixel confining layer surface；
Removal is located at the first sub- inorganic material layer in the open region of the pixel confining layer, and it is inorganic to form patterned first son
Layer；
Organic luminescent device is formed in the open region of the pixel confining layer；
The second sub- inorganic layer is formed on the pixel confining layer surface；
Wherein, the refractive index of the described first sub- inorganic layer is less than the refractive index of the described second sub- inorganic layer.
15. preparation method according to claim 12, which is characterized in that first multilayer includes the first organic layer；It is logical
The doping that sulfide or aromatic compound are gradually increased when forming first organic layer is crossed, so as to limit in the pixel
The refractive index of first organic layer of the opening area edge tilting zone of given layer is incremented by successively along the first direction.
16. preparation method according to claim 12, which is characterized in that first multilayer includes the first organic layer, institute
Stating the first organic layer includes at least two sub- organic layers；It is described positioned at the opening area edge tilting zone of the pixel confining layer
At least one layer of refractive index of first multilayer is incremented by along first direction, comprising:
The first sub- organic layer and the second sub- organic layer are sequentially formed above the pixel confining layer；
The refractive index of the first sub- organic layer is less than the refractive index of the described second sub- organic layer.
17. a kind of organic light-emitting display device, which is characterized in that including the organic light emission as described in claim 1~11 is any
Display panel.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178530A (en) * | 2021-04-09 | 2021-07-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113571565A (en) * | 2021-07-23 | 2021-10-29 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN113838991A (en) * | 2020-06-08 | 2021-12-24 | 成都辰显光电有限公司 | Display panel and display device |
| WO2022094973A1 (en) * | 2020-11-06 | 2022-05-12 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| EP4142453A1 (en) * | 2021-08-24 | 2023-03-01 | Samsung Display Co., Ltd. | Display apparatus and method of manufacturing the same |
| CN117858580A (en) * | 2023-12-20 | 2024-04-09 | 惠科股份有限公司 | Display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855184A (en) * | 2012-11-29 | 2014-06-11 | 三星显示有限公司 | Organic light-emitting display device and method of manufacturing the same |
| CN104393016A (en) * | 2014-10-30 | 2015-03-04 | 京东方科技集团股份有限公司 | OLED pixel unit and display substrate and preparation method thereof and display device |
| US20170033170A1 (en) * | 2015-07-27 | 2017-02-02 | Samsung Display Co., Ltd. | Organic light emitting diode display |
| US20170098690A1 (en) * | 2015-10-01 | 2017-04-06 | Samsung Display Co., Ltd. | Organic light-emitting display apparatus |
-
2018
- 2018-12-18 CN CN201811550314.3A patent/CN109638055B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855184A (en) * | 2012-11-29 | 2014-06-11 | 三星显示有限公司 | Organic light-emitting display device and method of manufacturing the same |
| CN104393016A (en) * | 2014-10-30 | 2015-03-04 | 京东方科技集团股份有限公司 | OLED pixel unit and display substrate and preparation method thereof and display device |
| US20170033170A1 (en) * | 2015-07-27 | 2017-02-02 | Samsung Display Co., Ltd. | Organic light emitting diode display |
| US20170098690A1 (en) * | 2015-10-01 | 2017-04-06 | Samsung Display Co., Ltd. | Organic light-emitting display apparatus |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838991A (en) * | 2020-06-08 | 2021-12-24 | 成都辰显光电有限公司 | Display panel and display device |
| CN113838991B (en) * | 2020-06-08 | 2024-02-23 | 成都辰显光电有限公司 | Display panel and display device |
| WO2022094973A1 (en) * | 2020-11-06 | 2022-05-12 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| CN114846615A (en) * | 2020-11-06 | 2022-08-02 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN114846615B (en) * | 2020-11-06 | 2023-12-01 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113178530A (en) * | 2021-04-09 | 2021-07-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113571565A (en) * | 2021-07-23 | 2021-10-29 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN113571565B (en) * | 2021-07-23 | 2024-05-24 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| EP4142453A1 (en) * | 2021-08-24 | 2023-03-01 | Samsung Display Co., Ltd. | Display apparatus and method of manufacturing the same |
| CN117858580A (en) * | 2023-12-20 | 2024-04-09 | 惠科股份有限公司 | Display panel and display device |
| CN117858580B (en) * | 2023-12-20 | 2024-10-01 | 惠科股份有限公司 | Display panel and display device |
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|---|---|
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