CN107393950B - Organic light emitting display panel and its organic light-emitting display device - Google Patents
Organic light emitting display panel and its organic light-emitting display device Download PDFInfo
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- CN107393950B CN107393950B CN201710841006.5A CN201710841006A CN107393950B CN 107393950 B CN107393950 B CN 107393950B CN 201710841006 A CN201710841006 A CN 201710841006A CN 107393950 B CN107393950 B CN 107393950B
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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
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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Abstract
The embodiment of the present invention provides a kind of organic light emitting display panel and its organic light-emitting display device, is related to field of display technology, for improving visual angle colour cast problem, improves the display effect of organic light-emitting display device.Organic light emitting display panel includes, first Organic Light Emitting Diode, at least one of second Organic Light Emitting Diode and third Organic Light Emitting Diode include the Organic Light Emitting Diode with the first light-emitting mode and the Organic Light Emitting Diode with second of light-emitting mode, in the same Organic Light Emitting Diode and the Organic Light Emitting Diode with second of light-emitting mode with the first light-emitting mode of light color out, in facing in the mobile default angular field of view in angular angle of squint from the organic light emitting display panel, the brightness of the Organic Light Emitting Diode with the first light-emitting mode is greater than the brightness of the Organic Light Emitting Diode with second of light-emitting mode.Above-mentioned organic light emitting display panel is suitable for display device.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of organic light emitting display panels and its organic light emitting display to fill
It sets.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) due to its self-luminous, wide viewing angle,
The features such as reaction time is short is widely used in a display device.
In organic light-emitting display device in the prior art, have including the Organic Light Emitting Diode that glows, green light
The Organic Light Emitting Diode of machine light emitting diode and blue light-emitting, when different perspectives watches screen, the color of screen can become
Change, i.e. generation colour cast, for example, be white light at positive visual angle, it may be partially red or partially yellow at 45 degree of visual angles.
Summary of the invention
The present invention provides a kind of organic light emitting display panel and its organic light-emitting display device, asks for improving visual angle colour cast
Topic, improves the display effect of organic light-emitting display device.
In a first aspect, the present invention provides a kind of organic light emitting display panel, organic light emission line panel includes:
First Organic Light Emitting Diode, the second Organic Light Emitting Diode and third Organic Light Emitting Diode；
First Organic Light Emitting Diode, second Organic Light Emitting Diode and the third Organic Light Emitting Diode
Respectively for issuing one of feux rouges, green light or blue light；
Wherein, first Organic Light Emitting Diode, second Organic Light Emitting Diode and the third organic light emission
At least one of diode includes Organic Light Emitting Diode with the first light-emitting mode and has second of light-emitting mode
Organic Light Emitting Diode,
Organic Light Emitting Diode and second of hair with the first light-emitting mode described in same light color out
In the Organic Light Emitting Diode of optical mode, the mobile default view in angular angle of squint is being faced from the organic light emitting display panel
In angular region, the brightness of the Organic Light Emitting Diode of the first light-emitting mode is greater than the organic of second of light-emitting mode
The brightness of light emitting diode.
Second aspect, the present invention provide a kind of organic light-emitting display device, and organic light-emitting display device includes above-mentioned involved
And the organic light emitting display panel arrived.
Having the beneficial effect that the aspect and any possible implementation manners as described above:
The Organic Light Emitting Diode for issuing same color can be included the organic light emission of the first light-emitting mode by the present invention
The Organic Light Emitting Diode of diode and second of light-emitting mode, since two kinds of light-emitting modes are in default angular field of view, the
A kind of brightness of the Organic Light Emitting Diode of light-emitting mode is consistently greater than the bright of the Organic Light Emitting Diode of second of light-emitting mode
Degree, so as to integrate the first light-emitting mode and the second light-emitting mode, the synthesis for obtaining the Organic Light Emitting Diode is bright
Degree-visual angle curve, declines its brightness slowly with the increase of visual angle angle, bright with other two kinds of Organic Light Emitting Diodes
Degree-visual angle curve trend tends to be uniform, to no matter will not go out from that visual angle viewing screen in default angular field of view
The case where existing colour cast, thus the display effect effectively improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the principle of luminosity figure of Organic Light Emitting Diode provided by the embodiment of the present invention；
Fig. 2 is one of the structural schematic diagram of organic light emitting display panel provided by the embodiment of the present invention；
Fig. 3 is one of brightness-visual angle curve graph provided by the embodiment of the present invention；
Fig. 4 is brightness-visual angle curve of the Organic Light Emitting Diode of three kinds of different colours in the prior art；
Fig. 5 is the structural schematic diagram of the organic light emitting display panel of the prior art；
Fig. 6 is the second structural representation of organic light emitting display panel provided by the embodiment of the present invention；
Fig. 7 is the third structural representation of organic light emitting display panel provided by the embodiment of the present invention；
Fig. 8 is the four of the structural schematic diagram of organic light emitting display panel provided by the embodiment of the present invention；
Fig. 9 is the five of the structural schematic diagram of organic light emitting display panel provided by the embodiment of the present invention；
Figure 10 is the six of the structural schematic diagram of organic light emitting display panel provided by the embodiment of the present invention；
Figure 11 is brightness-visual angle curve graph two provided by the embodiment of the present invention；
Figure 12 is organic light-emitting display device structural schematic diagram provided by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
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.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It will be appreciated that though organic hair may be described using term first, second, third, etc. in embodiments of the present invention
Optical diode, but these Organic Light Emitting Diodes should not necessarily be limited by these terms.These terms are only used to Organic Light Emitting Diode
It is distinguished from each other out.For example, the first Organic Light Emitting Diode can also be claimed in the case where not departing from range of embodiment of the invention
For the second Organic Light Emitting Diode, similarly, the second Organic Light Emitting Diode can also be referred to as the first Organic Light Emitting Diode；
Similarly, third Organic Light Emitting Diode is also referred to as the first Organic Light Emitting Diode.
It is detailed introduce technical solution of the present invention before, the principle of luminosity of Organic Light Emitting Diode is simply situated between
It continues.As shown in Figure 1, its principle of luminosity figure for Organic Light Emitting Diode provided by the embodiment of the present invention.Organic light emitting display
Panel 1 includes anode 30 and the cathode 50 being oppositely arranged with anode 30, and is arranged in organic between anode 30 and cathode 50
Functional layer 40, organic function layer 40 include electron transfer layer 42, hole transmission layer 49 and luminescent layer 45, wherein electron transfer layer
42 are arranged close to cathode 50, and hole transmission layer 49 is arranged close to anode 30, and luminescent layer 45 is located at electron transfer layer 42 and hole passes
Between defeated layer 49.
Under the action of extra electric field, electronics e is injected from cathode 50 to organic function layer 40, and hole h is from anode 30 to having
Machine functional layer 40 is injected.Injected electrons e is migrated from the electron transfer layer 42 of organic function layer 40 to luminescent layer 45, the sky of injection
Cave h is migrated from the hole transmission layer 49 of organic function layer 40 to luminescent layer 45.Injected electrons e and injected holes h is shining
Exciton is generated after layer 45 is compound.Exciton migrates under the action of electric field, transfers energy to the organic light emission point in luminescent layer 45
The electronics of son, luminescent organic molecule by ground state transition to excitation state and releases energy, and last energy is discharged by way of photon
And it emits beam.
The present invention provides a kind of organic light emitting display panel, and as shown in FIG. 2 and 3, Fig. 2 is mentioned by the embodiment of the present invention
One of structural schematic diagram of organic light emitting display panel of confession, Fig. 3 are brightness-visual angle curve graph provided by the embodiment of the present invention
One of, which includes: the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and
Three Organic Light Emitting Diodes 6；First Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode
6 respectively for issuing one of feux rouges, green light or blue light；Illustratively, the first Organic Light Emitting Diode glows, second has
Machine light emitting diode green light, third Organic Light Emitting Diode blue light-emitting.
Wherein, in the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6
It is at least one include the Organic Light Emitting Diode with the first light-emitting mode light1 and have second of light-emitting mode
The Organic Light Emitting Diode of light2, with continued reference to Fig. 2, by taking the first Organic Light Emitting Diode 2 as an example, part therein first has
The light-emitting mode of machine light emitting diode 2 is the first light-emitting mode light1, the hair of the first Organic Light Emitting Diode of another part 2
Optical mode is second of light-emitting mode light2.
It is same go out light color Organic Light Emitting Diode with the first light-emitting mode light1 and with second
In the Organic Light Emitting Diode of light-emitting mode light2, the pre- of angular angle of squint movement is being faced from organic light emitting display panel
If in angular field of view, the brightness of the Organic Light Emitting Diode with the first light-emitting mode light1, which is greater than to have second, to shine
The brightness of the Organic Light Emitting Diode of mode light2.Referring to Fig. 3, within a preset period of time, the first light-emitting mode light1
Organic Light Emitting Diode brightness, the brightness of the Organic Light Emitting Diode of consistently greater than second light-emitting mode light2, this
Embodiment passes through the wavelength of light of sending of setting Organic Light Emitting Diode, the thickness of organic function layer, organic function layer
The difference of thickness, the thickness of hole transmission layer, the thickness of anode material, the doping concentration of luminescent layer, the dopant material in luminescent layer
The technological means (as detailed below) such as wavelength, obtain biggish brightness-time graph (the first light-emitting mode of two species diversity
Light1 and second of light-emitting mode light2), so that synthesis obtains one according to two species diversity biggish brightness-time graph
General brightness-time graph that brightness slowly declines with the time.
It is understood that positive visual angle involved in the present embodiment, angle when being eyes screen vertical can be by this
Angle is set as 0 °, and by taking screen direction as an example, eyes look squarely screen, then is regarded as eyes and screen vertical, at this time
Visual angle is 0 °；Angle of squint refers to an angle value greater than 0 ° and less than 90 °, and the angle value is absolute figure, for example,
Eyes are tilted to the right 45 °, and angle of squint at this time is 45 °, and eyes are tilted to the left 45 °, and angle of squint at this time is also 45 °.Default view
Angular region, refers to the range from positive visual angle (0 °) to angle of squint (be greater than 0 ° and less than 90 °), in this example, presets angular field of view
Greater than 80 °, it can be understood as maximum angle of squint is 80 °, and in the range of 0 ° to 80 °, the first light-emitting mode light1's has
The brightness of Organic Light Emitting Diode of the brightness of machine light emitting diode greater than the second light-emitting mode light2.
In the prior art, referring to fig. 4 and Fig. 5, Fig. 4 be three kinds of different colours in the prior art Organic Light Emitting Diode
Brightness-visual angle curve, Fig. 5 be the prior art organic light emitting display panel structural schematic diagram, positive visual angle watch screen
When, color composed by Red Organic Electroluminescence Devices, blue Organic Light Emitting Diode and blue Organic Light Emitting Diode with
Based on white.When screen is watched in 45 ° of angles of squint, since the brightness of blue light organic emissive diode is lower, feux rouges organic light emission
The brightness of diode is higher, and organic display panel shows partially red, and white picture is partially yellow.
In the present embodiment, the Organic Light Emitting Diode for issuing same color includes the organic light emission of the first light-emitting mode
The Organic Light Emitting Diode of diode and second of light-emitting mode, a corresponding brightness-visual angle curve of each light-emitting mode,
That is, the brightness of two kinds of light-emitting modes is different with the variation tendency at visual angle, in default angular field of view, the first shines
The brightness of the Organic Light Emitting Diode of mode is consistently greater than the brightness of the Organic Light Emitting Diode of second of light-emitting mode, that is,
In default angular field of view, the wherein brightness of the Organic Light Emitting Diode of the first light-emitting mode-visual angle curve brightness, always greatly
In brightness-visual angle curve brightness of the Organic Light Emitting Diode of second of light-emitting mode, according to above-mentioned two different brightness-
A comprehensive brightness-visual angle curve can be obtained in visual angle curve.Further, in the luminance viewing angle curve after comprehensive brightness with
The variation tendency at visual angle, can to tend to be uniform with brightness-visual angle curve trend of other two kinds of Organic Light Emitting Diodes,
To in default angular field of view, no matter from that visual angle viewing screen be not in colour cast the problem of, to effectively mention
High display effect.
Illustratively, by the first Organic Light Emitting Diode, the second Organic Light Emitting Diode and third organic light-emitting diodes
Guan Zhong, brightness with brightness change trend and remaining two kinds of Organic Light Emitting Diode brightness with visual angle change trend not
The light-emitting mode of same Organic Light Emitting Diode is adjusted, and the Organic Light Emitting Diode is made to have two different luminous moulds
Formula integrates two different light-emitting modes, makes the brightness of the Organic Light Emitting Diode with the trend of the variation at visual angle
Improved, so with the brightness of the Organic Light Emitting Diode of other two kinds of luminescent colors as the trend of visual angle change is close or
Person is uniform, to, no matter from that visual angle viewing screen, issue the organic light emission of three kinds of different colours in default angular field of view
The case where brightness of diode is close or approximate close, is not in colour cast.It can also be two different colors of to wherein issuing
The light-emitting mode of Organic Light Emitting Diode is adjusted, also can also be to the hair for the Organic Light Emitting Diode for issuing three kinds of different colours
Optical mode is adjusted, so that issuing the brightness of the Organic Light Emitting Diode of three kinds of different colours as the variation tendency at visual angle becomes
In uniform, it is effectively improved the colour cast problem of organic display panel.
In the present embodiment its brightness of the Organic Light Emitting Diode of two kinds of light-emitting modes with the variation tendency at visual angle it is as follows:
As shown in figure 3, the brightness of the Organic Light Emitting Diode with the first light-emitting mode light1 changes with time
In downward trend after first rising, the change of the brightness of the Organic Light Emitting Diode with second of light-emitting mode light2 at any time
Changing is in downward trend.
In the present embodiment, for same (issuing same color) light emitting organic diodes, can have there are two types of not
Same light-emitting mode light1 and light2, each light-emitting mode correspond to a brightness with the variation tendency (brightness-at visual angle
Visual angle curve), according to the corresponding brightness of two kinds of light-emitting modes with the variation tendency at visual angle, can be obtained a comprehensive brightness with
The variation tendency at visual angle (general brightness-visual angle curve), the brightness of the synthesis with the variation tendency at visual angle be brightness with
Visual angle slowly declines.In preset angular field of view, by brightness-view of brightness-visual angle curve and two outer two kinds of light emitting diodes
The light-emitting mode for the Organic Light Emitting Diode that angular curve differs greatly is adjusted, so that issuing organic hair of three kinds of colors
The brightness of optical diode-visual angle curve shape is close or approximate close, no matter watches screen from that visual angle and is not in
The case where colour cast, effectively improves display effect.
It further, can be by the light-emitting mode of a part of Organic Light Emitting Diode in the Organic Light Emitting Diode of same color
The first light-emitting mode is set, and another part is arranged to the second light-emitting mode, and specific set-up mode is as follows:
By the first Organic Light Emitting Diode tool, there are two types of be illustrated for light-emitting mode.
The first, as shown in fig. 6, its structural schematic diagram for organic light emitting display panel provided by the embodiment of the present invention
Two, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6 are at array arrangement；
In the row direction, 2, second Organic Light Emitting Diodes 4 of first Organic Light Emitting Diode set gradually and one
Three Organic Light Emitting Diodes 6 form a pixel unit；
The first organic light emission two on line direction and column direction as unit of by pixel unit, in adjacent pixel unit
Pole pipe 2 has different light-emitting modes, specific:
On the basis of orientation shown in fig. 6, for the convenience of description, being named to pixel unit, the pixel list of the first row
Member is 1y, and wherein y is indicated, from left to right in, which pixel unit, for example, first pixel unit its be 11, second picture
Plain unit its be 12；The name of pixel unit is referring to the first row in multirow included by second row and organic light emitting display panel
The name of middle pixel unit.In the first row, the light-emitting mode of first Organic Light Emitting Diode is light1, phase in pixel unit 11
The light-emitting mode of first Organic Light Emitting Diode is light2 in adjacent pixel unit 12；Likewise, in same row, pixel unit
The light-emitting mode of the first Organic Light Emitting Diode in 11 is light1, the first organic light emission two in adjacent pixel unit 21
The light-emitting mode of pole pipe is light2.
Second, as shown in fig. 7, its structural schematic diagram for organic light emitting display panel provided by the embodiment of the present invention
Three, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6 are at array arrangement；
In the row direction, 2, second Organic Light Emitting Diodes 4 of first Organic Light Emitting Diode set gradually and one
Three Organic Light Emitting Diodes 6 form a pixel unit；
On line direction as unit of by pixel unit, two adjacent pixel units are one group of 10 repeated arrangement, one
Organize two light-emitting mode light1 having the same of the first Organic Light Emitting Diode 2 in 10, first organic hair in adjacent sets
Optical diode 2 has different light-emitting mode light2；
The first Organic Light Emitting Diode 2 tool on column direction as unit of by pixel unit, in adjacent pixel unit
There is different light-emitting modes.Illustratively, the pixel unit 11 on the basis of orientation shown in Fig. 7, in same row, in the first row
The light-emitting mode of the first Organic Light Emitting Diode in (naming method is shown in above-mentioned corresponding position) is light1, then in the second row
Pixel unit 21 (naming method is shown in above-mentioned corresponding position) in Organic Light Emitting Diode light-emitting mode be light2.
The third, as shown in figure 8, its structural schematic diagram for organic light emitting display panel provided by the embodiment of the present invention
Four, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6 are at array arrangement；
In the row direction, 2, second Organic Light Emitting Diodes 4 of first Organic Light Emitting Diode set gradually and one
Three Organic Light Emitting Diodes 6 form a pixel unit；
On line direction as unit of by pixel unit, two adjacent pixel units are one group of repeated arrangement, at one group
In two the first Organic Light Emitting Diodes 2 have different light-emitting modes；On the basis of by orientation shown in Fig. 8, the first row
In, the first Organic Light Emitting Diode in pixel unit 11 (naming method is shown in above-mentioned corresponding position) has the first mould that shines
Formula light1, the first Organic Light Emitting Diode in the second pixel unit 12 (naming method is shown in above-mentioned corresponding position) have the
Two kinds of light-emitting mode light1.
On column direction as unit of by pixel unit, every two adjacent pixel unit is one group of repeated arrangement, one
Two the first Organic Light Emitting Diode light-emitting modes having the same in group, the first Organic Light Emitting Diode tool in adjacent sets
There is different light-emitting modes.On the basis of by orientation shown in Fig. 8, in first row, (naming method is shown in above-mentioned phase to pixel unit 11
The position answered) and pixel unit 21 (naming method is shown in above-mentioned corresponding position) be one group, pixel unit 31 and 41 be one
Group, wherein in pixel unit 11 and 21 light-emitting mode of first Organic Light Emitting Diode be light1, pixel unit 31 and
The light-emitting mode of first Organic Light Emitting Diode is light2 in 41.
4th kind, as shown in figure 9, its structural schematic diagram for organic light emitting display panel provided by the embodiment of the present invention
Five, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6 are at array arrangement；
In the row direction, 2, second Organic Light Emitting Diodes 4 of first Organic Light Emitting Diode set gradually and one
Three Organic Light Emitting Diodes 6 form a pixel unit.
On line direction as unit of by pixel unit, the first Organic Light Emitting Diode in adjacent pixel unit has
Different light-emitting modes, on column direction as unit of by pixel unit, the first Organic Light Emitting Diode of same row has phase
Same light-emitting mode.In the benchmark using Fig. 9 as orientation, in the first row, (naming method is shown in above-mentioned corresponding position to pixel unit 11
Set) in the first Organic Light Emitting Diode light-emitting mode be light1, (naming method is shown in above-mentioned phase to adjacent pixel unit 12
The position answered) in the light-emitting mode of the first Organic Light Emitting Diode be light2, in first row, pixel unit 11,21,31 and
The light-emitting mode of first Organic Light Emitting Diode is light1 in 41.
Skilled person will appreciate that according to the corresponding pixel arrangement of Organic Light Emitting Diode that the present embodiment illustrates,
Various arrangement can be obtained without thinking, and these belong to the protection scope of the present embodiment.Also, in Fig. 6~Fig. 9, example
Property shows multiple first Organic Light Emitting Diodes, the second Organic Light Emitting Diode and third Organic Light Emitting Diode, thing
In reality, the present invention is not particularly limited the quantity of above-mentioned Organic Light Emitting Diode.
The above-mentioned explanation carried out by taking light-emitting mode there are two types of the first Organic Light Emitting Diode therein tools as an example, and ability
Field technique personnel shine it is found that the second Organic Light Emitting Diode and/or third Organic Light Emitting Diode can be also arranged to two kinds
Mode, specific:
In the present embodiment, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third organic light-emitting diodes
Pipe 6 includes Organic Light Emitting Diode with the first light-emitting mode light1 and with second of light-emitting mode light2
Organic Light Emitting Diode；
Alternatively, the first Organic Light Emitting Diode 2 and the second Organic Light Emitting Diode 4 include having the first light-emitting mode
The Organic Light Emitting Diode of light1 and Organic Light Emitting Diode with second of light-emitting mode light2；
Alternatively, the first Organic Light Emitting Diode 2 and third Organic Light Emitting Diode 6 include having the first light-emitting mode
The Organic Light Emitting Diode of light1 and Organic Light Emitting Diode with second of light-emitting mode light2；
Alternatively, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6 include having the first light-emitting mode
The Organic Light Emitting Diode of light1 and Organic Light Emitting Diode with second of light-emitting mode light2.
In the present embodiment, by the Organic Light Emitting Diode for issuing red, green and blue three kinds of different colours, brightness-visual angle
Curve and the brightness of remaining two kinds of Organic Light Emitting Diode-visual angle curvilinear trend are inconsistent or differ biggish organic light emission two
Pole pipe is provided with light-emitting mode there are two types of tools, according to two kinds of light-emitting modes, obtains comprehensive brightness-visual angle curve, comprehensive is bright
Degree-visual angle curve and the brightness-visual angle curvilinear trend of remaining two kinds of Organic Light Emitting Diode are uniform, so as to improve or reduce from
Certain viewing angles watch the colour cast situation occurred when screen.Preferably, the Organic Light Emitting Diode for issuing three kinds of different colours is equal
Setting there are two types of light-emitting mode, thus issue the brightness of the Organic Light Emitting Diode of three kinds of different colours with visual angle slowly under
No matter drop is not in colour cast problem from that visual angle viewing screen, effectively promotes display effect in default angular field of view
Fruit.
It in one embodiment, as shown in Figure 10, is organic light emitting display panel provided by the embodiment of the present invention
Structural schematic diagram six, the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third organic light-emitting diodes
Pipe 6 includes the cathode 50 and anode 30 being oppositely arranged, and the organic function layer 40 being arranged between cathode 50 and anode 30；
Organic function layer 40 includes hole transmission layer 49, electron transfer layer 42 and is arranged in hole transmission layer 49 and electronics
Luminescent layer 45 between transport layer 42, hole transmission layer 49 are in contact with anode 30, and electron transfer layer 42 is in contact with cathode 50.
Specifically, the anode of Organic Light Emitting Diode is reflection anode, with a thickness of 450~700nm, wherein including thickness
For the reflecting layer Ag of 80~150nm, and with a thickness of the transparent electrode of 8~20nm, the material of the transparent electrode is ITO (oxidation
Indium tin) or IZO (indium zinc oxide), the reflectivity of reflection anode is greater than 80%；The material of cathode be metal or metal alloy,
Its transmitance is 30%~70%；The thickness of hole transmission layer is greater than 60nm；Luminescent layer with a thickness of 20nm~50nm；Electronics passes
Defeated layer with a thickness of 20~60nm.
Electron transfer layer is arranged in the present embodiment between cathode and luminescent layer, and the electronics generated can be made to be quickly transferred to hair
Hole transmission layer is arranged in photosphere between anode and luminescent layer, and the hole generated can be made to be quickly transferred to luminescent layer, electronics and sky
Cave is compound in luminescent layer, generates exciton, to shine.
In one embodiment, general brightness-visual angle curve in order to obtain, needs to be arranged the hair of Organic Light Emitting Diode
The wavelength of light out, the thickness of organic function layer, the difference of thickness of organic function layer, the thickness of hole transmission layer, anode material
The thickness of material, the doping concentration of luminescent layer, dopant material in luminescent layer wavelength:
The first, in the first Organic Light Emitting Diode 2, the second Organic Light Emitting Diode 4 and third Organic Light Emitting Diode 6
At least one of include Organic Light Emitting Diode with the first light-emitting mode light1 and there is second of luminous mould
In the Organic Light Emitting Diode of formula light2,
The wavelength for the light that Organic Light Emitting Diode with the first light-emitting mode light1 issues, being greater than has second
The wavelength for the light that the Organic Light Emitting Diode of kind light-emitting mode light2 issues.
Specifically, what the Organic Light Emitting Diode in the present embodiment was formed according to microcavity effect, therefore for particular color
Organic Light Emitting Diode for, the thickness (thickness of organic function layer) of wavelength and microcavity has certain relationship, in turn,
Its wavelength can be changed by adjusting the thickness of microcavity.
Tiny cavity light-emitting wavelength meets following relational expression:
Wherein, L is the total optical path (total tiny cavity light-emitting wavelength) of microcavity, θijBe light respectively anode and cathode phase shift it
With niAnd diIt is the refractive index and thickness of organic function layer respectively, m is the series of emission mode, λmIndicate that series is m grades of transmittings
The wavelength of mode.
From above-mentioned formula it is found that the total optical path L of micro-cavity structure can be adjusted by changing the thickness d of organic function layer,
And total optical path L is corresponding with the light-emitting mode m of Organic Light Emitting Diode and peak value λ m.Therefore, by changing organic function layer
The emission wavelength of micro-cavity structure is adjusted in thickness；It can change the position of luminescent layer m, change the emission wavelength lambda m that microcavity is adjusted.
Further, for the Organic Light Emitting Diode for sending out light of the same race, longer wavelengths of Organic Light Emitting Diode,
Brightness is also corresponding larger.Therefore, in default angular field of view, the light of the Organic Light Emitting Diode sending of the first light-emitting mode
The brightness of line, greater than the brightness of the light of the Organic Light Emitting Diode sending of second of light-emitting mode.
As visual angle and resonance wavelength meet special-shaped relational expression:
The π mL*cos of λ=2 Ψ
λ is resonance wavelength under different perspectives, and Ψ is Organic Light Emitting Diode visual angle angle, and L is tiny cavity light-emitting wavelength, and m is
The series of emission mode.From the above relation it can be seen that visual angle angle Ψ is bigger, resonance wavelength when mono- timing of tiny cavity light-emitting wavelength L
λ is slighter, i.e. peak value blue shift.
In order to reach higher microcavity resonance efficiency, the corresponding glow peak of second of light-emitting mode is adjusted to resonance wave
It is long, the corresponding glow peak adjustment of the first light-emitting mode to more than resonance wavelength.The first longer wavelengths of light-emitting mode, wave
It is long to will lead to the rising of the brightness under certain viewing angles under different visual angle angles close or equal to intrinsic wavelength.And second
The wavelength of kind light-emitting mode is resonance wavelength, separate intrinsic wavelength, therefore the Organic Light Emitting Diode of the first light-emitting mode
Brightness, greater than the brightness of the Organic Light Emitting Diode of second of light-emitting mode.
Second, the thickness for the organic function layer 40 that the Organic Light Emitting Diode with the first light-emitting mode light1 includes
Degree, greater than the thickness for the organic function layer 40 that the Organic Light Emitting Diode with second of light-emitting mode light2 includes.
The thicker Organic Light Emitting Diode of the thickness of organic function layer, wavelength is also longer, presets angular field of view accordingly
Interior, brightness is larger.Therefore, in default angular field of view, the Organic Light Emitting Diode of the first light-emitting mode includes organic
The brightness of functional layer, the brightness for the organic function layer that the Organic Light Emitting Diode greater than second of light-emitting mode includes.
The third, the thickness for the organic function layer 40 that the Organic Light Emitting Diode with the first light-emitting mode light1 includes
Degree, and the difference of thickness of the Organic Light Emitting Diode organic function layer 40 that includes with second of light-emitting mode light2 are greater than
10 angstroms.
The thickness for the organic function layer that Organic Light Emitting Diode with the first light-emitting mode includes, with have second
The difference of the thickness for the organic function layer that the Organic Light Emitting Diode of light-emitting mode includes is greater than after 10 angstroms, just can guarantee default
In angular field of view, the brightness of the Organic Light Emitting Diode of the first light-emitting mode is greater than the organic light emission two of second of light-emitting mode
The brightness of pole pipe.
4th kind, the thickness for the hole transmission layer 49 that the Organic Light Emitting Diode with the first light-emitting mode light1 includes
Degree, greater than the thickness for the hole transmission layer 49 that the Organic Light Emitting Diode with second of light-emitting mode light2 includes.
By taking feux rouges as an example, hole transmission layer that the Organic Light Emitting Diode of the first light-emitting mode includes with a thickness of
220nm, the hole transmission layer that the Organic Light Emitting Diode of second of light-emitting mode includes with a thickness of 200nm.
Also can be by taking the Organic Light Emitting Diode of blue light-emitting as an example, the Organic Light Emitting Diode of the first light-emitting mode includes
The thickness of the hole transmission layer for including with a thickness of 130nm, the Organic Light Emitting Diode of second of light-emitting mode of hole transmission layer
For 90nm.
Therefore, the wavelength of the Organic Light Emitting Diode of the first light-emitting mode, greater than organic hair of second of light-emitting mode
The wavelength of optical diode, further, in default angular field of view, the Organic Light Emitting Diode of the first light-emitting mode it is bright
Degree, greater than the brightness of the Organic Light Emitting Diode of second of light-emitting mode.
5th kind, anode material is ITO/Ag/ITO (tin indium oxide/Ag/ tin indium oxide), wherein Ag is reflecting layer, ITO
For transparent electrode,
The ITO for 40 side of close organic function layer that Organic Light Emitting Diode with the first light-emitting mode light1 includes
The thickness of layer, 40 side of close organic function layer for including greater than the Organic Light Emitting Diode with second of light-emitting mode light2
ITO layer thickness.
Thickness close to the ITO layer of organic function layer side is thicker, and the corresponding resonance wavelength of Organic Light Emitting Diode is longer,
Then the brightness of the corresponding Organic Light Emitting Diode is bigger.
In the present embodiment, close organic function layer 40 that the Organic Light Emitting Diode of the first light-emitting mode light1 includes
The ITO layer of side with a thickness of 15~25nm, the Organic Light Emitting Diode of second of light-emitting mode light2 include close to organic
8~15nm of thickness of the ITO layer of 40 side of functional layer.
6th kind, the doping concentration for the luminescent layer that the Organic Light Emitting Diode with the first light-emitting mode includes is less than
The doping concentration for the luminescent layer that Organic Light Emitting Diode with second of light-emitting mode includes.
In luminescent layer in the higher Organic Light Emitting Diode of doping concentration, dopant material concentration is got higher, dopant material forbidden band
Width becomes smaller, and spectral red shift, glow peak shifts, also, dopant material has certain electron mobility, dense when adulterating
After degree is got higher, luminous position is deviated to hole side, may cause the offset of glow peak, and then its corresponding wavelength is elongated, accordingly
Organic diode brightness it is larger.In the present embodiment, luminescent layer mixes in the Organic Light Emitting Diode of the first light-emitting mode
Miscellaneous concentration is 2%, and the doping concentration of luminescent layer is 1% in the Organic Light Emitting Diode of second of light-emitting mode, therefore, the first
The wavelength of the Organic Light Emitting Diode of light-emitting mode is greater than the wavelength of the Organic Light Emitting Diode of second of light-emitting mode, therefore,
In default angular field of view, the brightness of the Organic Light Emitting Diode of the first light-emitting mode, greater than having for second light-emitting mode
The brightness of machine light emitting diode.
7th kind, the wave for the dopant material in luminescent layer that the Organic Light Emitting Diode with the first light-emitting mode includes
It is long, the wavelength of dopant material in the luminescent layer for including greater than the Organic Light Emitting Diode with second of light-emitting mode.
Wherein, the dopant material of luminescent layer and second light-emitting mode have in the organic diode of the first light-emitting mode
The dopant material of luminescent layer is different in machine light emitting diode, therefore the two has different wavelength:
Specifically, as shown in figure 11, be the embodiment of the present invention provided by brightness-time plot it, the first hair
The dopant material of luminescent layer is iridium metals class in the Organic Light Emitting Diode of optical mode, and chemical structural formula is as follows:
The dopant material of luminescent layer also iridium metals class in the Organic Light Emitting Diode of second of light-emitting mode, but and the former
Structure not, chemical structural formula is as follows:
In conjunction with attached drawing 11 it is found that due to dopant material in the luminescent layer of the Organic Light Emitting Diode of the first light-emitting mode
Wavelength, greater than the wavelength of dopant material in the luminescent layer of the Organic Light Emitting Diode of second of luminescent material, therefore, in default view
In angular region, the brightness of the Organic Light Emitting Diode of the first light-emitting mode is greater than the organic light-emitting diodes of second of light-emitting mode
The brightness of pipe.
Certainly, the comparison of the Organic Light Emitting Diode of above two light-emitting mode, be based on remaining condition it is all the same before
It puts, which sets up.
The present embodiment provides a kind of organic light-emitting display devices, are provided by the embodiment of the present invention as shown in figure 12
Organic light-emitting display device structural schematic diagram, the organic light-emitting display device 500 include above-mentioned organic light emitting display panel 100.
It should be noted that, although Figure 12 is with mobile phone as an example, still the organic light-emitting display device is not limited to mobile phone, specifically
, which can include but is not limited to personal computer (Personal Computer, PC), a number
Word assistant (Personal Digital Assistant, PDA), radio hand-held equipment, tablet computer (Tablet
Computer), any electronic equipment having a display function such as MP4 player or television set.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (16)
1. a kind of organic light emitting display panel characterized by comprising
First Organic Light Emitting Diode, the second Organic Light Emitting Diode and third Organic Light Emitting Diode；
First Organic Light Emitting Diode, second Organic Light Emitting Diode and the third Organic Light Emitting Diode are respectively used
In one of sending feux rouges, green light or blue light；
Wherein, first Organic Light Emitting Diode, second Organic Light Emitting Diode and the third organic light-emitting diodes
At least one of pipe includes Organic Light Emitting Diode with the first light-emitting mode and having with second light-emitting mode
Machine light emitting diode,
It is same go out light color the Organic Light Emitting Diode with the first light-emitting mode and described there is second of hair
In the Organic Light Emitting Diode of optical mode, the mobile default view in angular angle of squint is being faced from the organic light emitting display panel
In angular region, the brightness of the Organic Light Emitting Diode with the first light-emitting mode is greater than described with second of luminous mould
The brightness of the Organic Light Emitting Diode of formula；
The brightness of the Organic Light Emitting Diode with the first light-emitting mode is in first to rise to decline afterwards with the variation at visual angle
Trend, the brightness of the Organic Light Emitting Diode with second of light-emitting mode are in downward trend with the variation at visual angle.
2. organic light emitting display panel according to claim 1, which is characterized in that the default angular field of view is greater than 80 °.
3. organic light emitting display panel according to claim 1, which is characterized in that
First Organic Light Emitting Diode, second Organic Light Emitting Diode and the third Organic Light Emitting Diode are equal
Including the cathode and anode being oppositely arranged, and the organic function layer being arranged between the cathode and the anode；
The organic function layer includes hole transmission layer, electron transfer layer and is arranged in the hole transmission layer and the electronics
Luminescent layer between transport layer, the hole transmission layer are in contact with the anode, the electron transfer layer and the cathode phase
Contact.
4. organic light emitting display panel according to claim 3, which is characterized in that
In first Organic Light Emitting Diode, second Organic Light Emitting Diode and the third Organic Light Emitting Diode
At least one Organic Light Emitting Diode with the first light-emitting mode for including and described there is second of luminous mould
In the Organic Light Emitting Diode of formula,
The wavelength for the light that the Organic Light Emitting Diode with the first light-emitting mode issues is greater than described with second
The wavelength for the light that the Organic Light Emitting Diode of light-emitting mode issues.
5. organic light emitting display panel according to claim 3, which is characterized in that described with the first light-emitting mode
The thickness for the organic function layer that Organic Light Emitting Diode includes, greater than the organic light-emitting diodes with second of light-emitting mode
The thickness for the organic function layer that pipe includes.
6. organic light emitting display panel according to claim 5, which is characterized in that described with the first light-emitting mode
The thickness for the organic function layer that Organic Light Emitting Diode includes, with the Organic Light Emitting Diode with second of light-emitting mode
Including organic function layer thickness difference be greater than 10 angstroms.
7. organic light emitting display panel according to claim 5, which is characterized in that
The thickness for the hole transmission layer that the Organic Light Emitting Diode with the first light-emitting mode includes, has greater than described
The thickness for the hole transmission layer that the Organic Light Emitting Diode of second of light-emitting mode includes.
8. organic light emitting display panel according to claim 3, which is characterized in that
The anode material is ITO/Ag/ITO,
The ITO layer close to the organic function layer side that the Organic Light Emitting Diode with the first light-emitting mode includes
Thickness, the close organic function layer side for including greater than the Organic Light Emitting Diode with second of light-emitting mode
The thickness of ITO layer.
9. organic light emitting display panel according to claim 3, which is characterized in that described with the first light-emitting mode
The doping concentration for the luminescent layer that Organic Light Emitting Diode includes, greater than the organic light-emitting diodes with second of light-emitting mode
The doping concentration for the luminescent layer that pipe includes.
10. organic light emitting display panel according to claim 3, which is characterized in that described that there is the first light-emitting mode
Organic Light Emitting Diode include luminescent layer in dopant material wavelength, there is having for second of light-emitting mode greater than described
The wavelength of dopant material in the luminescent layer that machine light emitting diode includes.
11. organic light emitting display panel according to claim 1, which is characterized in that first Organic Light Emitting Diode,
Second Organic Light Emitting Diode and the third Organic Light Emitting Diode are at array arrangement；
In the row direction, one set gradually, first Organic Light Emitting Diode, second organic light-emitting diodes
Pipe and a third Organic Light Emitting Diode form a pixel unit；
Described first organic hair on line direction and column direction as unit of by the pixel unit, in adjacent pixel unit
Optical diode has different light-emitting modes.
12. organic light emitting display panel according to claim 1, which is characterized in that first Organic Light Emitting Diode,
Second Organic Light Emitting Diode and the third Organic Light Emitting Diode are at array arrangement；
In the row direction, one set gradually, first Organic Light Emitting Diode, second organic light-emitting diodes
Pipe and a third Organic Light Emitting Diode form a pixel unit；
On line direction as unit of by the pixel unit, two adjacent pixel units are one group of repeated arrangement, at one group
In two the first Organic Light Emitting Diode light-emitting modes having the same, first organic light emission two in adjacent sets
Pole pipe has different light-emitting modes；
First Organic Light Emitting Diode on column direction as unit of by the pixel unit, in adjacent pixel unit
With different light-emitting modes.
13. organic light emitting display panel according to claim 1, which is characterized in that first Organic Light Emitting Diode,
Second Organic Light Emitting Diode and the third Organic Light Emitting Diode are at array arrangement；
In the row direction, one set gradually, first Organic Light Emitting Diode, second organic light-emitting diodes
Pipe and a third Organic Light Emitting Diode form a pixel unit；
On line direction as unit of by the pixel unit, two adjacent pixel units are one group of repeated arrangement, at one group
In two the first Organic Light Emitting Diodes have different light-emitting modes；
On column direction as unit of by the pixel unit, every two adjacent pixel unit is one group of repeated arrangement, one
Two the first Organic Light Emitting Diode light-emitting modes having the same in group, first organic light emission in adjacent sets
Diode has different light-emitting modes.
14. organic light emitting display panel according to claim 1, which is characterized in that first Organic Light Emitting Diode,
Second Organic Light Emitting Diode and the third Organic Light Emitting Diode are at array arrangement；
In the row direction, one set gradually, first Organic Light Emitting Diode, second organic light-emitting diodes
Pipe and a third Organic Light Emitting Diode form a pixel unit；
First Organic Light Emitting Diode on line direction as unit of by the pixel unit, in adjacent pixel unit
With different light-emitting modes, on column direction as unit of by the pixel unit, first organic light emission of same row
Diode light-emitting mode having the same.
15. organic light emitting display panel according to claim 1, which is characterized in that first Organic Light Emitting Diode,
Second Organic Light Emitting Diode and the third Organic Light Emitting Diode include organic with the first light-emitting mode
Light emitting diode and Organic Light Emitting Diode with second of light-emitting mode；
Alternatively, first Organic Light Emitting Diode and second Organic Light Emitting Diode include having the first mould that shines
The Organic Light Emitting Diode of formula and Organic Light Emitting Diode with second of light-emitting mode；
Alternatively, first Organic Light Emitting Diode and the third Organic Light Emitting Diode include having the first mould that shines
The Organic Light Emitting Diode of formula and Organic Light Emitting Diode with second of light-emitting mode；
Alternatively, second Organic Light Emitting Diode and the third Organic Light Emitting Diode include having the first mould that shines
The Organic Light Emitting Diode of formula and Organic Light Emitting Diode with second of light-emitting mode.
16. a kind of organic light-emitting display device, which is characterized in that including the described in any item organic hairs of such as claim 1~15
Light display panel.
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| CN108493210B (en) * | 2018-03-09 | 2020-10-30 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display panel and organic light-emitting display device thereof |
| CN108448007B (en) * | 2018-03-30 | 2021-06-29 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and display device thereof |
| CN108598124A (en) * | 2018-05-02 | 2018-09-28 | 上海天马微电子有限公司 | Display device |
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| CN103137650A (en) * | 2011-11-29 | 2013-06-05 | 三星显示有限公司 | Organic light emitting display device |
| CN106531771A (en) * | 2016-12-27 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Display substrate, display panel, display device and pixel driving method |
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| CN103137650A (en) * | 2011-11-29 | 2013-06-05 | 三星显示有限公司 | Organic light emitting display device |
| CN106531771A (en) * | 2016-12-27 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Display substrate, display panel, display device and pixel driving method |
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