CN110473984A - The preparation method of display panel, display device and display panel - Google Patents
The preparation method of display panel, display device and display panel Download PDFInfo
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- CN110473984A CN110473984A CN201910794391.1A CN201910794391A CN110473984A CN 110473984 A CN110473984 A CN 110473984A CN 201910794391 A CN201910794391 A CN 201910794391A CN 110473984 A CN110473984 A CN 110473984A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
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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
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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Abstract
The invention discloses the preparation methods of a kind of display panel, display device and display panel.The display panel includes: light emitting device layer, including the multiple luminescent devices being arranged in array；Chromatic filter layer, it is set to the light emission side of light emitting device layer, chromatic filter layer includes multiple filter units corresponding with multiple luminescent devices, each adjacent filter unit passes through light blocking cell isolation, multiple filter units include primary tape filter unit and adjusting type filter unit, and the refractive index of the fringe region of adjusting type filter unit is greater than the refractive index of its central area.The phenomenon that display panel provided according to embodiments of the present invention, which can alleviate or eliminate colour cast under big visual angle.
Description
Technical field
The present invention relates to field of display technology, and in particular to the preparation of a kind of display panel, display device and display panel
Method.
Background technique
With the continuous development of display technology, display panel manufacturing technology also tends to be mature.Existing display panel is main
Including Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display panel, liquid crystal display panel
(Liquid Crystal Display, LCD).And due to OLED display panel have self-luminous, power consumption is low, reaction speed is fast,
The advantages that wide viewing angle, is widely used in display field.
However, current display panel, under big visual angle, the color effect of picture is poor, it is easy to appear color offset phenomenon, this
Display effect of the display panel under big visual angle is seriously affected.
It would therefore be highly desirable to generate a kind of display panel for being effectively improved big visual angle and being easy to appear colour cast.
Summary of the invention
The present invention provides the preparation method of a kind of display panel, display device and display panel, which can delay
The phenomenon that solving or eliminate colour cast under big visual angle.
In a first aspect, the embodiment of the present invention provides a kind of display panel, which includes:
Light emitting device layer, including the multiple luminescent devices being arranged in array；
Chromatic filter layer, is set to the light emission side of light emitting device layer, and chromatic filter layer includes corresponding with multiple luminescent devices
Multiple filter units, for each adjacent filter unit by light blocking cell isolation, multiple filter units include that primary tape filters
Unit and adjusting type filter unit, the refractive index of the fringe region of adjusting type filter unit are greater than the refractive index of its central area.
According to an aspect of an embodiment of the present invention, in the horizontal direction for being parallel to display panel, adjusting type filters single
The refractive index of member is gradually increased from the central area of adjusting type filter unit to its fringe region.
The refractive index of adjusting type filter unit is set as gradually changing, the light of corresponding color under each visual angle can be adjusted
The amount of light of line, prevents the amount of light suddenly change of the light of corresponding color, to influence the display effect of display panel.
According to an aspect of an embodiment of the present invention, the fringe region of adjusting type filter unit is formed around central area,
Fringe region and central area are made of different materials, and the refractive index of the material of fringe region is greater than the material of central area
Refractive index.
The different zones of adjusting type filter unit are prepared by the different material of refractive index, using the big material of refractive index as tune
The fringe region of integer filter unit, using the relatively small material of refractive index as the central area of adjusting type filter unit, thus
The refractive index for being adjusted the fringe region of type filter unit is greater than the refractive index of its central area.
According to an aspect of an embodiment of the present invention, the fringe region of adjusting type filter unit is formed around central area,
Fringe region and central area are made of identical material, and the material distribution density of fringe region is greater than the material of central area
Distribution density.
The density and refractive index correlation of same material, i.e. density is bigger, and refractive index is bigger.Adjusting type is filtered
The density of the fringe region of unit is set greater than the density of its central area, to be adjusted the marginal zone of type filter unit
The refractive index in domain is greater than the refractive index of its central area.
According to an aspect of an embodiment of the present invention, the surface of the side of the backward luminous device layer of adjusting type filter unit is
Flat surface, and the surface of the side of the backward luminous device layer of adjusting type filter unit and the one of the backward luminous device of light blocking unit
The surface of side is flush.
The surface of the side of the backward luminous device layer of adjusting type filter unit is flat surface and sends out backwards with light blocking unit
The surface of the side of optical device layer is flush, and prevents the shooting angle of the light of corresponding color and the light of amount of light and other colors
Line gap is larger, to influence the display quality of display panel.
According to an aspect of an embodiment of the present invention, the thickness of the fringe region of adjusting type filter unit is filtered less than adjusting type
The thickness of the central area of light unit, and the thickness of the fringe region of adjusting type filter unit is less than or equal to light blocking unit
Thickness.
The thickness of the fringe region of adjusting type filter unit is less than the thickness of light blocking unit, and light blocking unit can will be big
The light barrier for the corresponding color being emitted under visual angle from adjusting type filter unit, to be further reduced under big visual angle from adjusting type
The amount of light of the light of filter unit outgoing, the phenomenon that alleviating big visual angle colour cast.
According to an aspect of an embodiment of the present invention, display panel further include:
Array substrate, positioned at light emitting device layer backwards to the side of chromatic filter layer；
Encapsulated layer, between light emitting device layer and chromatic filter layer, for sealing light emitting device layer；
Scattering particles at least partly is distributed in primary tape filter unit.
For example, red filter unit and green filter unit are initial for the partially blue phenomenon of picture is shown under big visual angle
Scattering particles is arranged in red filter unit and/or green filter unit in type filter unit, can increase red light and/
Or the lighting area of green light alleviates big visual angle to increase the amount of light of red light and/or green light under big visual angle
Blue phenomenon partially.
Second aspect, the embodiment of the present invention provide a kind of display device comprising such as the display surface of any one of first aspect
Plate.
The third aspect, the embodiment of the present invention provide a kind of preparation method of display panel comprising:
Array substrate is provided；
Multiple luminescent devices are formed in array substrate, obtain light emitting device layer；
Encapsulated layer is formed on light emitting device layer；
Chromatic filter layer is formed on encapsulated layer, chromatic filter layer includes multiple filter units and each adjacent optical filtering of isolation
The light blocking unit of unit；Wherein, multiple filter units of formation include primary tape filter unit and adjusting type filter unit, are adjusted
The refractive index of the fringe region of integer filter unit is greater than the refractive index of its central area.
The display panel provided according to embodiments of the present invention, the display panel include light emitting device layer and chromatic filter layer,
Chromatic filter layer includes multiple filter units corresponding with multiple luminescent devices, and multiple filter units include primary tape filter unit
And adjusting type filter unit, the refractive index of the fringe region of adjusting type filter unit are greater than the refractive index of its central area.It will adjust
The refractive index of the fringe region of integer filter unit is set greater than the refractive index of its central area, and under big visual angle, part is corresponding
When external exit of the light of color from the fringe region of the adjusting type filter unit to display panel, it can filter in the adjusting type
The fringe region of unit is totally reflected backwards to the surface of the side of encapsulated layer, so that the light of part corresponding color can not be from this
The fringe region of adjusting type filter unit goes out to be shot out, so as to reduce the amount of light of the light of corresponding color under big visual angle,
The accounting for reducing the light of corresponding color under big visual angle, the phenomenon that reaching alleviation or eliminate big visual angle colour cast.
Detailed description of the invention
By reading detailed description of non-limiting embodiments referring to the drawings, other feature of the invention,
Objects and advantages will become more apparent upon, wherein the same or similar appended drawing reference indicates the same or similar feature, and attached drawing is simultaneously
It is not drawn according to actual ratio.
Fig. 1 shows the structural schematic diagram of display panel according to an embodiment of the present invention；
Fig. 2 shows the path schematic diagrames of blue ray under big visual angle according to an embodiment of the present invention；
Fig. 3 shows the structural schematic diagram of the display panel of another embodiment according to the present invention；
Fig. 4 shows the structural schematic diagram of the display panel of another embodiment according to the present invention；
Fig. 5 shows the flow chart of the production method of display panel according to an embodiment of the present invention；
Fig. 6 shows the cross section structure schematic diagram of impression block according to an embodiment of the present invention；
Fig. 7 a, which is shown, forms adjusting type filter unit in the production method of display panel according to an embodiment of the present invention
The step of cross section structure schematic diagram；
Fig. 7 b, which is shown, forms adjusting type optical filtering list in the production method of the display panel of another embodiment according to the present invention
The cross section structure schematic diagram of the step of member.
Description of symbols:
100- display panel；
10- array substrate；
20- light emitting device layer；21- emitting red light device；22- green light emitting device；23- blue luminescent device；24- pixel
Confining layers；
30- encapsulated layer；
40- chromatic filter layer；41- light blocking unit；421- red filter unit；422- green filter unit；423- is blue
Color filter unit.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, below in conjunction with drawings and the specific embodiments, the present invention is carried out further detailed
Description.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting this hair
It is bright.To those skilled in the art, the present invention can be in the case where not needing some details in these details
Implement.The description of embodiment is preferably managed just for the sake of being provided by showing example of the invention of the invention below
Solution.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
It should be appreciated that being known as being located at another floor, another area when by a floor, a region when describing the structure of component
When domain " above " or " top ", can refer to above another layer, another region, or its with another layer, it is another
Also comprising other layers or region between a region.Also, if by part turnover, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".
For current OLED display panel, in actual application, the brightness of the light of different colours with
The increase at visual angle has different degrees of decaying, so causes positive visual angle to issue light and normally shows that picture can go out under big visual angle
The phenomenon that existing colour cast.For example, red light and green light are very fast as visual angle increases brightness decay, and blue light is with visual angle
It is slower to increase brightness decay, leads to show picture under big visual angle, the amount of light of blue ray is larger, so that blue ray accounts for
It is bigger, cause to show that picture will appear partially blue phenomenon under big visual angle.Alternatively, because the material of OLED luminescent device itself
Material, microcavity effect or other reasons cause to show that picture will appear partially red, partially green or partially purple phenomenon under big visual angle.
The phenomenon that will appear colour cast under big visual angle for display picture, the present invention provide a kind of display panel, display dress
It sets and the preparation method of display panel.The feature and exemplary embodiment of various aspects of the invention is described more fully below.This
Outside, feature described below, structure or characteristic can be incorporated in any suitable manner in one or more embodiments.
Illustratively, regularly the display panel produced in producing line can be detected, to determine the display surface of production
Plate whether there is the phenomenon that colour cast under big visual angle, and there are the colour casts of which kind of color, then can be according to embodiments of the present invention
The structure of the display panel of offer produces the display panel of lower batch.
In the following, by taking display panel is partially blue under big visual angle as an example, the feature of various aspects of the invention and exemplary is described
Embodiment, it should be appreciated that following embodiments is equally applicable to that display panel is partially red under big visual angle, partially green and its allochromatic colour
Inclined situation.
As shown in Figure 1, display panel 100 provided in an embodiment of the present invention includes light emitting device layer 20 and chromatic filter layer
40.Light emitting device layer 20 includes the multiple luminescent devices being arranged in array.Chromatic filter layer 40 is set to light emitting device layer 20
Light emission side, chromatic filter layer 40 include multiple filter units corresponding with multiple luminescent devices, and each adjacent filter unit passes through
Light blocking unit 41 is isolated, and multiple filter units include primary tape filter unit (i.e. red filter unit 421 and green filter list
422) and adjusting type filter unit (i.e. blue filter unit 423), the refractive index of the fringe region of adjusting type filter unit is big for member
Refractive index in its central area.
Referring to Fig. 2, Fig. 2 be big visual angle under blue ray blue filter unit 423 path schematic diagram.It is exemplary
, the refractive index of the fringe region of blue filter unit 423 is n1, and blue filter unit 423 is backwards to the side of encapsulated layer 30
The refractive index of the substance of top is n2, critical angle θ.Under big visual angle, at least partly blue ray is in blue filter unit 423
The incidence angle of fringe region can be greater than θ, therefore, backwards envelope of the part blue ray in the fringe region of blue filter unit 423
Filling can be totally reflected at the surface of the side of layer 30, this part blue ray then will not go out to be shot out, big so as to reduce
The amount of light of blue ray under visual angle.And the refractive index of the fringe region of blue filter unit 423 is greater than the folding of its central area
Rate is penetrated, under positive visual angle, surface of the blue ray in the side backwards to encapsulated layer 30 of the central area of blue filter unit 423
Place will not be totally reflected, to will not influence the display quality of display panel under positive visual angle.
The display panel 100 provided according to embodiments of the present invention, for the partially blue situation of display picture, chromatic filter layer 40
Including multiple filter units at least partly blue filter unit 423 be adjusting type filter unit, at least partly blue filter
The refractive index of the fringe region of light unit 423 is set greater than the refractive index of its central area, under big visual angle, part blue ray
It, can be in the marginal zone of blue filter unit 423 when from the fringe region of blue filter unit 423 to the external exit of display panel
Domain is totally reflected backwards to the surface of the side of encapsulated layer 30, so that part blue ray can not be from blue filter unit 423
Fringe region goes out to be shot out, and so as to reduce the amount of light of blue ray under big visual angle, that is, reduces blue ray under big visual angle
Accounting, reach alleviation or eliminate the partially blue phenomenon in big visual angle.Similarly, partially red or partially green for picture is shown under big visual angle
The phenomenon that, the refractive index of the fringe region of red filter unit 421 is set greater than to the refractive index of its central area, alternatively,
The refractive index of the fringe region of green filter unit 422 is set greater than to the refractive index of its central area, alleviation can be reached
Either eliminate the partially red or partially green phenomenon in big visual angle.
In some embodiments, the refractive index of the fringe region of adjusting type filter unit is greater than the refraction of its central area
Rate, wherein fringe region can be all fringe regions around central area, with solve directive big visual angle colour cast
Problem；Fringe region is also possible to be only located at the region of certain side of central area, two sides etc., such as can be made according to user
With habit, determine higher refractive index is set in which side edge, to solve the problems, such as the big visual angle colour cast of specific direction.
In some embodiments, referring to Fig. 1, display panel provided in an embodiment of the present invention 100 further comprises array
Substrate 10, positioned at light emitting device layer 20 backwards to the side of chromatic filter layer 40.Array substrate 10 includes substrate and is located on substrate
Thin film transistor (TFT) (not shown), substrate can be the flexible substrates such as polyimides, is also possible to the rigid substrates such as glass.
Thin film transistor (TFT) is for driving corresponding luminescent device to shine.Illustratively, thin film transistor (TFT) include active layer, gate insulation layer,
Grid, interlayer insulating film, source electrode and drain electrode, source electrode and drain electrode by be located at gate insulation layer and interlayer insulating film on via hole with have
Active layer electrical connection.Foregoing description is by taking top gate structure array substrate as an example, it will be appreciated by those skilled in the art that this hair
Bright scheme applies also for the array substrate of bottom grating structure.Those skilled in the art can design top gate structure according to actual needs
Or bottom grating structure, and the position of active layer is set, details are not described herein.
In some embodiments, the luminescent device in light emitting device layer 20 include the top electrode being stacked, luminescent layer and
Lower electrode (not shown), top electrode are set to the side of luminescent layer array base palte 10.Luminescent device is organic light emission
Device, luminescent layer are organic luminous layer, are bonded to each other at luminescent layer by lower electrode and top electrode injected holes and electronics,
To shine.Illustratively, luminescent layer can be organic luminous layer and can also include comprising hole injection layer, hole transport
At least one of layer, hole blocking layer, electron transfer layer and common layer of electron injecting layer.However, the present embodiment is not limited to
This.For example, luminescent layer can be organic luminous layer and can also include the common layer for executing various other functions.
In some embodiments, light emitting device layer 20 includes multiple luminescent devices.Specifically, referring to Fig. 1, luminescent device
Layer 20 includes multiple emitting red light devices 21, multiple green light emitting devices 22 and multiple blue luminescent devices 23.Chromatic filter layer
40 include multiple filter units.Specifically, chromatic filter layer 40 includes multiple red filter units 421, multiple green filter lists
Member 422 and multiple blue filter units 423.Each filter unit and the luminescent device of corresponding color are correspondingly arranged, that is, red filter
Unit 421 is correspondingly arranged with emitting red light device 21, and green filter unit 422 is correspondingly arranged with green light emitting device 22, blue
Filter unit 423 is correspondingly arranged with blue luminescent device 23.
Please continue to refer to Fig. 1, light emitting device layer 20 further includes pixel confining layer 24, and figure can be formed in array substrate 10
The pixel confining layer 24 of shape, pixel confining layer 24 include multiple open areas, and multiple luminescent devices are located in each open area.
The application for luminescent device arrangement mode without limitation.For example, can be by an emitting red light device 21, one
A green light emitting device 22 and a blue luminescent device 23 are used as repetitive unit, and multiple repetitive units are with predetermined rule in array
Repeated arrangement forms light emitting device layer 20 on substrate.Repetitive unit also may include other combinations, so that display panel has
There is higher resolution ratio.
In further embodiments, light emitting device layer 20 can be white light emitting device layer, for example, it may be a red
Filter unit 421 corresponds to a white light emitting device, a green filter unit 422 corresponds to a white light emitting device and one
Blue filter unit 423 corresponds to a white light emitting device.At this point it is possible to by 421, the green filters of a red filter unit
Light unit 422 and a blue filter unit 423 are used as repetitive unit, and multiple repetitive units are with predetermined rule on encapsulated layer 30
Repeated arrangement.Repetitive unit also may include other combinations, so that display panel resolution ratio with higher.
In some embodiments, please continue to refer to Fig. 1, display panel 100 provided in an embodiment of the present invention further comprises
Encapsulated layer 30, between light emitting device layer 20 and chromatic filter layer 40, for sealing light emitting device layer 20.Encapsulated layer 30 can be with
It is thin-film encapsulation layer, specifically, encapsulated layer 30 includes the inorganic layer and organic layer (not shown) of the alternately laminated setting of multilayer.
For example, encapsulated layer 30 includes at least two layers inorganic layer and at least one layer of organic layer, one layer close to array substrate 10 of encapsulated layer 30
For inorganic layer, it is organic layer among two layers of inorganic layer that one layer far from array substrate 10 of encapsulated layer 30, which is also inorganic layer,.Inorganic layer
It can be made and be formed by chemical vapour deposition technique (Chemical Vapor Deposition, CVD), organic layer can pass through
Ink-jet printing (Ink Jet Printing, IJP) production is formed.Illustratively, encapsulated layer 30 includes two layers be stacked
Inorganic layer and one layer of organic layer, organic layer are located between two layers of inorganic layer.The material of inorganic layer preferably obstruct water oxygen effect compared with
Good silicon nitride, but it is not limited only to silicon nitride；The material of organic layer includes polyvinyl alcohol, urethane acrylate polymer, gathers
One or more of combinations, however, the present invention is not limited thereto in imide resin.
In some embodiments, with continued reference to FIG. 1, light blocking unit 41 can for black matrix (Black Matrix,
BM).Illustratively, light blocking unit 41 can by pad pasting, photoetching, laser processing, inkjet printing, 3D printing, silk-screen printing,
The modes such as micro-contact printing are formed on the surface of the side of the backward luminous device layer 20 of encapsulated layer 30.Light blocking unit 41 can be with
Stop and absorb light, prevents the light colour contamination between each filter unit.
In some embodiments, in the horizontal direction for being parallel to display panel, the refractive index of adjusting type filter unit by
The central area of adjusting type filter unit is gradually increased to its fringe region.
For example, blue filter unit 423 is adjusting type filter unit for the partially blue phenomenon of picture is shown under big visual angle,
The refractive index of blue filter unit 423 is set as gradually changing, the amount of light of blue ray under each visual angle can be adjusted, into
And the problem for showing that picture is partially blue under each visual angle is adjusted, and the amount of light suddenly change of blue ray can be prevented, thus
Influence the display effect of display panel.
In some embodiments, the filter unit that chromatic filter layer 40 includes is optical filter (Color Filter, CF), can
To be coated with the photoresist of red green and blue on the surface of the side of the backward luminous device layer 20 of encapsulated layer 30, and to painting
The photoresist of cloth is exposed development, obtains multiple filter units.Each filter unit can also be formed with other technology modes.
In some embodiments, the fringe region of adjusting type filter unit is formed around central area, and fringe region is in
Heart district domain is made of different materials, and the refractive index of the material of fringe region is greater than the refractive index of the material of central area.Example
Property, adjusting type filter unit includes the ontology being formed by resin and the pigment that is distributed in ontology, polyimides
(Polyimide, PI), poly terephthalic acid class plastics (Polyethylene terephthalate, PET), polymethyl
The refractive index of the resin materials such as sour methyl esters (Polymethyl methacrylate, PMMA) is different, can select refractive index phase
Material to high resin as the fringe region of adjusting type filter unit, the resin for selecting refractive index relatively low is as adjusting type
The material of the fringe region of filter unit.
In further embodiments, the fringe region of adjusting type filter unit is formed around central area, fringe region and
Central area is made of identical material, and the material distribution density of fringe region is greater than the material distribution density of central area.
Illustratively, adjusting type filter unit includes the ontology being formed by resin and the pigment that is distributed in ontology, and adjusting type filters single
The fringe region and central area of member can be formed by same resin, such as any one in PI, PET, PMMA etc..Example
Property, for the partially blue phenomenon of picture is shown under big visual angle, blue filter unit 423 is adjusting type filter unit, blue filter
The material of the fringe region of unit 423 and the material of its central area are identical, the material of the fringe region of blue filter unit 423
Distribution density is greater than the material distribution density of its central area.The not same district of blue filter unit 423 is formed with same material
Domain, but the density of different zones is different.The density and refractive index correlation of same material, i.e. density is bigger, refraction
Rate is bigger.The material distribution density of the fringe region of blue filter unit 423 is set greater than to the material point of its central area
Cloth density, so that the refractive index for obtaining the fringe region of blue filter unit 423 is greater than the refractive index of its central area.
In some embodiments, the thickness of the fringe region of adjusting type filter unit is less than the center of adjusting type filter unit
The thickness in region, and the thickness of the fringe region of adjusting type filter unit is less than or equal to the thickness of light blocking unit.It is exemplary
, the surface of the side of the backward luminous device layer of adjusting type filter unit is to adjust towards the surface of backward luminous device layer protrusion
The thickness of the fringe region of integer filter unit is equal to the thickness of light blocking unit.The surface of the protrusion can be ellipsoid, ball
Shape face, trapezoidal faces etc..Illustratively, referring to Fig. 3, blue filter unit 423 is adjusting type filter unit, blue filter unit
The surface of the side of 423 backward luminous device layers 20 is ellipsoid, the thickness and photoresist of the fringe region of blue filter unit 423
The thickness for keeping off unit 41 is identical.For example, the thickness of the blue filter unit 423 formed is thicker than surrounding light blocking unit 41
Degree is thicker, is then imprinted with impression block shown in fig. 6 to blue filter unit 423, obtains blue shown in Fig. 3
Filter unit 423.
In further embodiments, the surface of the side of the backward luminous device layer of adjusting type filter unit is towards backwards to hair
The surface of optical device layer protrusion, the thickness of the fringe region of adjusting type filter unit are less than the thickness of light blocking unit.The protrusion
Surface can be ellipsoid, spherical, trapezoidal faces etc..Illustratively, referring to Fig. 4, blue filter unit 423 is adjusting type
Filter unit, the surface of the side of the backward luminous device layer 20 of blue filter unit 423 are ellipsoid, blue filter unit 423
Fringe region thickness be less than light blocking unit 41 thickness.For example, thickness and its week of the blue filter unit 423 formed
The thickness of the light blocking unit 41 enclosed is identical, is then imprinted with impression block to blue filter unit 423, obtains Fig. 4 institute
The blue filter unit 423 shown.
The thickness of the fringe region of blue filter unit 423 is less than the thickness of light blocking unit 41,41 energy of light blocking unit
It is enough to stop the blue ray being emitted under big visual angle from blue filter unit 423, to be further reduced blue light under big visual angle
The amount of light of line alleviates the partially blue phenomenon in big visual angle.
In some embodiments, the surface of the side of the backward luminous device layer of adjusting type filter unit is flat surface, and is adjusted
The surface of the side on the surface and backward luminous device layer of light blocking unit of the side of the backward luminous device layer of integer filter unit
It is flush.Illustratively, blue filter unit 423 is adjusting type filter unit, can be by blue filter unit shown in Fig. 3
423 are higher by the removal of 41 part of light blocking unit, obtain the one of the backward luminous device layer 20 of blue filter unit 423 shown in FIG. 1
The surface of side is flat surface, and the surface of the side of the backward luminous device layer 20 of blue filter unit 423 and light blocking unit 41
The surface of the side of backward luminous device layer 20 is flush.The table of the side of the backward luminous device layer 20 of blue filter unit 423
Face is flat surface and is flush with the surface of the side of the backward luminous device layer 20 of light blocking unit 41, on the one hand, will not be to indigo plant
The refractive index of the different zones of color filter unit 423 impacts；On the other hand, can prevent blue ray shooting angle and
Amount of light and the light gap of other colors are larger, to influence the display quality of display panel.
In some embodiments, scattering particles at least partly is distributed in primary tape filter unit.For example, referring to Fig. 1,
For the partially blue phenomenon in big visual angle, red filter unit 421 and green filter unit 422 are the primary tape in chromatic filter layer 40
Filter unit can be at least partly red filter unit 421 and scattering particles be distributed with；And/or at least partly green filter
Scattering particles is distributed in unit 422.Scattering particles is set in red filter unit 421 and/or green filter unit 422,
The lighting area of red light and/or green light can be increased, to increase red light and/or green light under big visual angle
Amount of light, further alleviate or eliminate the partially blue phenomenon in big visual angle.
Above-described embodiment and view are for the phenomenon for showing picture indigo plant partially under big visual angle, are to adjust with blue filter unit
For integer filter unit, describe the structure of blue filter unit 423, those skilled in the art can according to actual needs,
Foregoing description will be at least partially arranged at least partly or in green filter unit 422 in red filter unit 421
423 structure of blue filter unit, details are not described herein.
The embodiment of the invention also provides a kind of display device, including above-mentioned display panel 100, which can be answered
For virtual reality device, mobile phone, tablet computer, television set, display, laptop, Digital Frame, navigator, can wear
It wears a wrist watch, any products or components having a display function such as Internet of things node.The principle solved the problems, such as due to the display device
It is similar to above-mentioned display panel 100, therefore the implementation of the display device may refer to the implementation of above-mentioned display panel 100, repeat
Place repeats no more.
Referring to Fig. 5, the embodiment of the present invention also provides a kind of preparation method of display panel.Fig. 5 is the embodiment of the present invention
A kind of flow diagram of the preparation method of the display panel provided.As shown in figure 5, the system of the display panel of the embodiment of the present invention
Preparation Method the following steps are included:
S10 provides array substrate；
S20 forms multiple luminescent devices in array substrate, obtains light emitting device layer；
S30 forms encapsulated layer on light emitting device layer；
S40, forms chromatic filter layer on encapsulated layer, and chromatic filter layer includes that multiple filter units and isolation are each adjacent
The light blocking unit of filter unit；Wherein, multiple filter units of formation include that primary tape filter unit and adjusting type optical filtering are single
Member, the refractive index of the fringe region of adjusting type filter unit are greater than the refractive index of its central area.
Illustratively, the display panel produced in producing line is detected, to determine that the display panel of production whether there is
Under big visual angle the phenomenon that colour cast, and there are the colour casts of which kind of color, for example, detecting that display panel is partially blue, it is determined that blue
Filter unit is adjusting type filter unit.
Further, in S40, the step of forming the adjusting type filter unit of chromatic filter layer, includes:
S41 forms multiple adjusting type filter units on encapsulated layer；Wherein, the thickness of the adjusting type filter unit of formation
More than or equal to the thickness of light blocking unit；
Impression block with sunk structure is fitted on adjusting type filter unit by S42, is applied to impression block and is pressed
Power；Wherein, the cup depth of the central area of sunk structure is greater than the cup depth of its fringe region；
S43 removes impression block, and the refractive index for being adjusted the fringe region of type optical filtering is greater than the refraction of its central area
Rate.
In S41, for example, determining blue filter unit 423 for adjustment for the partially blue phenomenon of picture is shown under big visual angle
Type filter unit can form blue filter unit 423 with same material, form blue filter unit 423 as shown in Figure 7a
Thickness it is thicker than the thickness of surrounding light blocking unit 41.Alternatively, forming blue filter unit with same material
423, the thickness for forming blue filter unit 423 as shown in Figure 7b is identical as the thickness of surrounding light blocking unit 41.This
When, the refractive index of fringe region and the refractive index of its central area of the blue filter unit 423 of formation are identical.
In S42 and S43, recess can be elliposoidal, spherical shape, trapezoidal isostructural recess, and corresponding adjusting type filters
Unit is ellipsoid, spherical, trapezoidal faces etc. backwards to the surface of the side of encapsulated layer.For example, making ide shown in fig. 6 can be used
Plate imprints blue filter unit 423 shown in Fig. 7 a, and coining after a certain period of time, removes impression block, obtains shown in Fig. 3
Blue filter unit 423 backwards to encapsulated layer 30 side surface be ellipsoid, the fringe region of blue filter unit 423
Thickness is identical as the thickness of light blocking unit 41.
Alternatively, being imprinted with impression block to blue filter unit 423 shown in Fig. 7 b, imprint after a certain period of time,
Impression block is removed, the surface of side of the available blue filter unit 423 shown in Fig. 4 backwards to encapsulated layer 30 is ellipsoid
Face, the thickness of the fringe region of blue filter unit 423 are less than the thickness of light blocking unit 41, and blue filter unit 423
The thickness of central area is equal to the thickness of light blocking unit 41.
Further, after S43, the portion of light blocking unit 41 is higher by obtained blue filter unit 423 shown in Fig. 3
Point cut open flat, obtaining blue filter unit 423 as shown in Figure 1 backwards to the surface of the side of encapsulated layer 30 is flat surface, and
Blue filter unit 423 backwards to encapsulated layer 30 side surface and light blocking unit 41 backwards to encapsulated layer 30 side surface
It is flush.
Above-described embodiment is directed to the phenomenon for showing that picture is partially blue under big visual angle, describes by taking blue filter unit 423 as an example
Red filter unit 421 or green filter unit 422 can be arranged according to actual needs by its structure, those skilled in the art
At 423 structure of blue filter unit of foregoing description, details are not described herein.
The preparation method of the display panel provided according to embodiments of the present invention, in obtained display panel, chromatic filter layer
The refractive index of the fringe region of adjusting type filter unit in the 40 multiple filter units for including is greater than the refraction of its central area
Rate.For example, blue filter unit 423 is adjusting type filter unit for the partially blue phenomenon of picture is shown under big visual angle, it will be blue
The refractive index of the fringe region of filter unit 423 is set greater than the refractive index of its central area, under big visual angle, part blue light
It, can be at the edge of blue filter unit 423 when external exit of the line from the fringe region of blue filter unit 423 to display panel
Region is totally reflected backwards to the surface of the side of encapsulated layer 30, so that part blue ray can not be from blue filter unit 423
Fringe region go out be shot out, so as to reduce the amount of light of blue ray under big visual angle, that is, reduce blue light under big visual angle
The accounting of line reaches alleviation or eliminates the partially blue phenomenon in big visual angle.Similarly, for showing that picture is partially red or inclined under big visual angle
The refractive index of the fringe region of red filter unit is set greater than the refractive index of its central area by green phenomenon, alternatively, will
The refractive index of the fringe region of green filter unit is set greater than the refractive index of its central area, can reach alleviation or disappear
Except the partially red or partially green phenomenon in big visual angle.
According to present invention embodiment as described above, these embodiments details all there is no detailed descriptionthe, also not
Limiting the invention is only the specific embodiment.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is principle and practical application in order to better explain the present invention, thus belonging to making
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its full scope and equivalent.
Claims (10)
1. a kind of display panel characterized by comprising
Light emitting device layer, including the multiple luminescent devices being arranged in array；
Chromatic filter layer, is set to the light emission side of the light emitting device layer, and the chromatic filter layer includes shining with the multiple
The corresponding multiple filter units of device, for each adjacent filter unit by light blocking cell isolation, the multiple optical filtering is single
Member includes primary tape filter unit and adjusting type filter unit, and the refractive index of the fringe region of the adjusting type filter unit is greater than
The refractive index of its central area.
2. display panel according to claim 1, which is characterized in that in the horizontal direction for being parallel to the display panel
On, the refractive index of the adjusting type filter unit is gradually increased from the central area of the adjusting type filter unit to its fringe region
Greatly.
3. display panel according to claim 1, which is characterized in that the fringe region of the adjusting type filter unit
It is formed around the central area, the fringe region and the central area are made of different materials, the fringe region
Material refractive index be greater than the central area material refractive index.
4. display panel according to claim 1, which is characterized in that the fringe region of the adjusting type filter unit
It is formed around the central area, the fringe region and the central area are made of identical material, and the marginal zone
The material distribution density in domain is greater than the material distribution density of the central area.
5. display panel according to claim 3 or 4, which is characterized in that the adjusting type filter unit is backwards to the hair
The surface of the side of optical device layer is flat surface, and the table of side of the adjusting type filter unit backwards to the light emitting device layer
The surface of side of the face with the light blocking unit backwards to the luminescent device is flush.
6. display panel according to claim 3 or 4, which is characterized in that the fringe region of the adjusting type filter unit
Thickness be less than the adjusting type filter unit central area thickness, and the fringe region of the adjusting type filter unit
Thickness is less than or equal to the thickness of the light blocking unit.
7. display panel according to claim 1-6, which is characterized in that the display panel further include:
Array substrate, positioned at light emitting device layer backwards to the side of the chromatic filter layer；
Encapsulated layer, between the light emitting device layer and the chromatic filter layer, for sealing the light emitting device layer；
Scattering particles is distributed in at least partly described primary tape filter unit.
8. a kind of display device, which is characterized in that including such as described in any item display panels of claim 1-7.
9. a kind of preparation method of display panel characterized by comprising
Array substrate is provided；
Multiple luminescent devices are formed in the array substrate, obtain light emitting device layer；
Encapsulated layer is formed on the light emitting device layer；
Chromatic filter layer is formed on the encapsulated layer, the chromatic filter layer includes that multiple filter units and isolation are each adjacent
The light blocking unit of the filter unit；Wherein, the multiple filter unit of formation includes primary tape filter unit and adjustment
Type filter unit, the refractive index of the fringe region of the adjusting type filter unit are greater than the refractive index of its central area.
10. the preparation method of display panel according to claim 9, which is characterized in that form the chromatic filter layer
The step of adjusting type filter unit includes:
Multiple adjusting type filter units are formed on the encapsulated layer；Wherein, the adjusting type filter unit of formation
Thickness is greater than or equal to the thickness of the light blocking unit；
Impression block with sunk structure is fitted on the adjusting type filter unit, the impression block is applied and is pressed
Power；Wherein, the cup depth of the central area of the sunk structure is greater than the cup depth of its fringe region；
The impression block is removed, the refractive index for obtaining the fringe region that the adjusting type filters is greater than the refraction of its central area
Rate.
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| CN111025660A (en) * | 2019-12-31 | 2020-04-17 | 上海视欧光电科技有限公司 | Display panel and near-to-eye display device |
| CN112255830A (en) * | 2020-10-23 | 2021-01-22 | 深圳市华星光电半导体显示技术有限公司 | Laser induction panel, manufacturing method thereof and display device |
| CN112701206A (en) * | 2021-03-23 | 2021-04-23 | 北京芯海视界三维科技有限公司 | Light emitting device, method for arranging functional piece of light emitting device and display device |
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