CN109390488A - Organic light emitting display panel and preparation method thereof, organic light-emitting display device - Google Patents
Organic light emitting display panel and preparation method thereof, organic light-emitting display device Download PDFInfo
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- CN109390488A CN109390488A CN201811160817.XA CN201811160817A CN109390488A CN 109390488 A CN109390488 A CN 109390488A CN 201811160817 A CN201811160817 A CN 201811160817A CN 109390488 A CN109390488 A CN 109390488A
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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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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- H—ELECTRICITY
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Abstract
The invention discloses a kind of organic light emitting display panels and preparation method thereof, organic light-emitting display device, organic light emitting display panel includes light emitting functional layer basal layer and the light emitting functional layer on light emitting functional layer basal layer, the angle of plane is more than or equal to 30 ° where the light direction and light emitting functional layer basal layer of light emitting functional layer, less than or equal to 90 °, it improves the random caused light emitting functional layer of the molecules align in light emitting functional layer and emits light in all directions, it is low from the probability of the light emission side of organic light emitting display panel transmitting light, the low problem of the luminous efficiency of light emitting functional layer in organic light emitting display panel, it considerably increases finally from the probability of the light emission side of organic light emitting display panel transmitting light, improve the luminous efficiency of light emitting functional layer in organic light emitting display panel.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of organic light emitting display panel and its production sides
Method, machine luminous display unit.
Background technique
OLED, i.e. Organic Light Emitting Diode (Organic Light-Emitting Diode), also known as organic electroluminescence hair
Optical device, OLED have gradually been occupied in small size display field due to the advantages that frivolous, bent, high contrast, wide colour gamut
One seat.Its basic structure includes anode, cathode and the light emitting functional layer of corresponding each pixel region, when voltage is applied to
When on anode and cathode, hole and electronics are moved to light emitting functional layer, and the two is compound in light emitting functional layer, in light emitting functional layer
Exciton ground state moved to by excitation state shine.
AMOLED (Active-matrix Organic Light-Emitting Diode, active matrix organic light-emitting two
Pole pipe) light emitting functional layer in light emitting molecule arrangement it is random, light emitting functional layer emits light in all directions, so that finally
It is lower from the probability of the light emission side of organic light emitting display panel transmitting light, and then lead to the function that shines in organic light emitting display panel
The luminous efficiency of ergosphere is lower.
Summary of the invention
The present invention provides a kind of organic light emitting display panel and preparation method thereof, organic light-emitting display device, improves hair
The random caused light emitting functional layer of molecules align in light functional layer emits light in all directions, from organic light emitting display face
The probability of the light emission side transmitting light of plate is low, the low problem of the luminous efficiency of light emitting functional layer in organic light emitting display panel, greatly
It increases greatly finally from the probability of the light emission side of organic light emitting display panel transmitting light, improves in organic light emitting display panel
The luminous efficiency of light emitting functional layer.
In a first aspect, the embodiment of the invention provides a kind of organic light emitting display panels, comprising:
Light emitting functional layer basal layer and the light emitting functional layer on the light emitting functional layer basal layer, the luminous function
The angle of plane is more than or equal to 30 ° where the light direction of ergosphere and the light emitting functional layer basal layer, is less than or equal to 90 °.
Further, the angle of the light direction of the light emitting functional layer and light emitting functional layer basal layer place plane
Equal to 90 °.
Further, the long axis direction of the light emitting molecule structure of the light emitting functional layer and the light emitting functional layer base
The angle of plane is more than or equal to 0 ° where bottom, is less than or equal to 45 °.
Further, the light emitting molecule structure is rodlike molecule structure.
Further, the light emitting functional layer includes the hair of the light emitting functional layer of blue pixel area, green pixel area
The light emitting functional layer of light functional layer and red pixel area；
The light emitting functional layer meets at least one following condition:
The material for constituting the light emitting functional layer of the blue pixel area includes 4,4 '-bisstyryl carbazole biphenyls, N,
Bis- (3- the methylbenzene)-N of N ' -, N '-biphenyl diamine or 4, in 4 '-(9,9 '-spiro fluorene) -2,7- bis- (N, N- diphenylamines)
It is one or more of；
The material for constituting the light emitting functional layer of the green pixel area includes 4,4 '-bis- [4- (diphenylamines) styryls]
Biphenyl or 4,4-N, one or more of N- diazole-biphenyl；
The material for constituting the light emitting functional layer of the red pixel area includes rubrene, 2,7- dithienyl -9-Fluorenone
Or one or more of 4- dicyan ylmethyl -2- methyl -6- (p- dimethyl amine styrene) H- pyrans.
Further, the organic light emitting display panel include substrate and along far from the orientation substrate setting first
Electrode, the first auxiliary light emission layer, light emitting functional layer, the second auxiliary light emission layer and second electrode, the light-emitting function basal layer
Including one or more of the substrate, the first electrode and described first auxiliary light emission layer.
Further, micro-cavity structure is formed between the first electrode and the second electrode；
Along the direction perpendicular to plane where organic light emitting display panel, between the first electrode and the second electrode
Distance be the micro-cavity structure chamber it is long, the chamber of the micro-cavity structure is long to be more than or equal to 170nm, is less than or equal to 230nm.
Second aspect, the embodiment of the invention also provides a kind of production of organic light emitting display panel as described in relation to the first aspect
Method, comprising:
Form light emitting functional layer basal layer；
Refrigeration processing is carried out to the light emitting functional layer basal layer；
Light emitting functional layer is formed on refrigeration treated light emitting functional layer basal layer.
Further, the temperature of the refrigeration processing is more than or equal to 5 DEG C, is less than or equal to 25 DEG C.
The third aspect, the embodiment of the invention also provides a kind of organic light-emitting display devices, including described in first aspect
Organic light emitting display panel.
The embodiment of the invention provides a kind of organic light emitting display panel and preparation method thereof, organic light-emitting display device,
Organic light emitting display panel includes light emitting functional layer basal layer and the light emitting functional layer on light emitting functional layer basal layer, hair
The angle of plane is more than or equal to 30 ° where the light direction and light emitting functional layer basal layer of light functional layer, is less than or equal to 90 °, changes
Light emitting functional layer caused by the molecules align being apt in light emitting functional layer is random emits light in all directions, from organic light emission
The probability of the light emission side transmitting light of display panel is low, and the luminous efficiency of light emitting functional layer is low in organic light emitting display panel asks
Topic considerably increases finally from the probability of the light emission side of organic light emitting display panel transmitting light, improves organic light emitting display
The luminous efficiency of light emitting functional layer in panel.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is a kind of the schematic diagram of the section structure of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of light emitting functional layer in the prior art；
Fig. 3 is a kind of flow diagram of the production method of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the section structure of the corresponding organic light emitting display panel of step S110；
Fig. 5 is the schematic diagram of the section structure of the corresponding organic light emitting display panel of step S130；
Fig. 6 is a kind of structural schematic diagram of organic light-emitting display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.It is same or similar in this specification
Drawing reference numeral represent the same or similar structure, element or process.It should be noted that in the absence of conflict, this Shen
Please in embodiment and embodiment in feature can be combined with each other.
The embodiment of the invention provides a kind of organic light emitting display panel, organic light emitting display panel includes light emitting functional layer
Basal layer and the light emitting functional layer on light emitting functional layer basal layer, the light direction and light emitting functional layer of light emitting functional layer
The angle of plane is more than or equal to 30 ° where basal layer, is less than or equal to 90 °.
AMOLED (Active-matrix Organic Light-Emitting Diode, active matrix organic light-emitting two
Pole pipe) light emitting functional layer in light emitting molecule arrangement it is random, light emitting functional layer emits light in all directions, so that finally
It is lower from the probability of the light emission side of organic light emitting display panel transmitting light, and then lead to the function that shines in organic light emitting display panel
The luminous efficiency of ergosphere is lower.
Organic light emitting display panel provided in an embodiment of the present invention include light emitting functional layer basal layer and be located at shine function
Light emitting functional layer on ergosphere basal layer, the angle of plane where the light direction and light emitting functional layer basal layer of light emitting functional layer
More than or equal to 30 °, it is less than or equal to 90 °, improves the random caused light emitting functional layer edge of molecules align in light emitting functional layer
All directions emit light, low from the probability of the light emission side of organic light emitting display panel transmitting light, organic light emitting display panel
The low problem of the luminous efficiency of middle light emitting functional layer considerably increases and finally emits light from the light emission side of organic light emitting display panel
The probability of line improves the luminous efficiency of light emitting functional layer in organic light emitting display panel.
It is core of the invention thought above, following will be combined with the drawings in the embodiments of the present invention, to the embodiment of the present invention
In technical solution be clearly and completely described.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Under the premise of making creative work, every other embodiment obtained be shall fall within the protection scope of the present invention.
Fig. 1 is a kind of the schematic diagram of the section structure of organic light emitting display panel provided in an embodiment of the present invention.Such as Fig. 1 institute
Show, organic light emitting display panel includes light emitting functional layer basal layer 2 and the light-emitting function on light emitting functional layer basal layer 2
Layer 1, the light direction of light emitting functional layer 1 and the angle of 2 place plane of light emitting functional layer basal layer are more than or equal to 30 °, be less than etc.
In 90 °.
Fig. 2 is the schematic diagram of the section structure of light emitting functional layer in the prior art.As shown in Fig. 2, shining in light emitting functional layer 1
The arrangement of molecular structure 11 is random, and the direction that light emitting molecule structure 11 emits beam (in Fig. 2 shown in arrow) is perpendicular to luminous
The direction of 11 long axis a of molecular structure, there are part light emitting molecule structures 11 not to send out from the light emission side of organic light emitting display panel 12
Light light, for example, in Fig. 2 the leftmost side and the rightmost side light emitting molecule structure 11, this part light emitting molecule structure 11 issue light
It is not used to the display of organic light emitting display panel, the light emitting functional layer 1 in such organic light-emitting structure emits in all directions
Light causes light emitting functional layer 1 lower to the probability of light emission side transmitting light, so that light-emitting function in organic light emitting display panel
The luminous efficiency of layer 1 substantially reduces.The light direction and light emitting functional layer basal layer of light emitting functional layer 1 is arranged in the embodiment of the present invention
The angle of 2 place planes be more than or equal to 30 °, be less than or equal to 90 °, reduce light emitting molecule structure 11 to non-light emission side shine it is general
Rate increases the probability finally to emit beam from the light emission side of organic light emitting display panel, improves organic light emitting display panel
The luminous efficiency of middle light emitting functional layer 1.
As shown in Figure 1, the long axis a direction and light-emitting function of the light emitting molecule structure 11 of light emitting functional layer can be set
The angle of layer 2 place plane of basal layer is more than or equal to 0 °, is less than or equal to 45 °.As shown in Fig. 2, part light emitting molecule structure 11 is sent out
In the upper surface of light emitting functional layer 1 refraction or total reflection can occur for light out, if where the long axis a of light emitting molecule structure 11
Direction and the angle α of 2 place plane of light emitting functional layer basal layer are excessive, can make the light of the sending of light emitting molecule structure 11 and erect
Histogram to angle it is excessive, light emitting molecule structure 11 issue light can be totally reflected in the upper surface of light emitting functional layer 1, this
The light that part light emitting molecule structure 11 issues is not used to the display of organic light emitting display panel, again such that organic light emission is aobvious
Show that the luminous efficiency of light emitting functional layer in panel substantially reduces.The light emitting molecule structure of setting light emitting functional layer of the embodiment of the present invention
11 long axis a direction and the angle of 2 place plane of light emitting functional layer basal layer are more than or equal to 0 °, are less than or equal to 45 °, significantly
The probability that the light of the sending of light emitting molecule structure 11 is totally reflected in light emitting functional layer upper surface is reduced, organic hair is improved
The luminous efficiency of light emitting functional layer 1 in light display panel.
Optionally, the light direction of light emitting functional layer 1 and the angle of 2 place plane of light emitting functional layer basal layer can be set
Equal to 90 °.As shown in Figure 1, organic light emitting display panel may include substrate 20 and along the far from the setting of 20 direction of substrate
One electrode 21, the first auxiliary light emission layer 22 and light emitting functional layer 1, substrate 20 can be the array base of organic light emitting display panel
Plate, the driving circuit that driving organic light emitting display panel show is provided in array substrate, and the first auxiliary light emission layer 22 is hole
The auxiliary light emission functional layer 1 of type, the first auxiliary light emission layer 22 can have multilayered structure, such as may include hole injection layer
221, hole transmission layer 222 and electronic barrier layer 223, light emitting functional layer basal layer 2 may include substrate 20, first electrode 21 with
And first one or more of the auxiliary light emission layer 22.
Pair after having made light emitting functional layer basal layer 2, refrigeration processing can be carried out to light emitting functional layer basal layer 2, i.e.,
One in substrate 20, first electrode 21 and the first auxiliary light emission layer 22 carries out refrigeration processing, preferably, can to it is described
Directly contact one of light emitting functional layer carries out refrigeration processing, specially to the electronic barrier layer in the first auxiliary light emission layer 22
223 carry out refrigeration processing.1 layer of light-emitting function is made on light emitting functional layer basal layer 2 again, the lower light emitting functional layer base of temperature
Bottom 2 makes the long axis a direction of the light emitting molecule structure 11 in the light emitting functional layer made on it 1 tend to be parallel to hair
2 place plane of light functional layer basal layer, i.e., so that the long axis a direction of the light emitting molecule structure 11 in light emitting functional layer 1 with
The angle of 2 place plane of light emitting functional layer basal layer tends to 0 °, the light direction and light emitting functional layer basal layer of light emitting functional layer 1
The angle of 2 place planes tends to 90 °, and light emitting functional layer 1 shines along the direction perpendicular to plane where organic light emitting display panel,
Substantially increase the luminous efficiency of organic light emitting display panel.
It should be noted that need to ensure forming light emitting functional layer after carrying out refrigeration processing to light emitting functional layer basal layer 2
Light emitting functional layer basal layer 2 keeps cooling when 1, to ensure light emission direction and 2 institute of light emitting functional layer basal layer of light emitting functional layer 1
Tend to 90 ° in the angle of plane.
Optionally, it is rodlike molecule structure that light emitting molecule structure, which can be set, and it includes blue that light emitting functional layer, which can be set,
The light emitting functional layer of the light emitting functional layer of pixel region, the light emitting functional layer of green pixel area and red pixel area shines
Functional layer meets at least one following condition:
Condition one: constitute the light emitting functional layer of blue pixel area material include 4,4 '-bisstyryl carbazole biphenyls,
N, N '-bis- (3- methylbenzene)-N, N '-biphenyl diamine or 4, in 4 '-(9,9 '-spiro fluorene) -2,7- bis- (N, N- diphenylamines)
One or more.
Condition two: the material for constituting the light emitting functional layer of green pixel area includes 4,4 '-bis- [4- (diphenylamines) styrene
Base] biphenyl or 4,4-N, one or more of N- diazole-biphenyl.
Condition three: the material for constituting the light emitting functional layer of red pixel area includes rubrene, 2,7- dithienyl -9- fluorenes
One or more of ketone or 4- dicyan ylmethyl -2- methyl -6- (p- dimethyl amine styrene) H- pyrans.
Light emitting molecule structure in above-mentioned material is rodlike molecule structure, for rodlike molecule structure, conjugate direction
The orientation of as long axis direction, rodlike molecule structure long axis has certain dependence to temperature.Not to light emitting functional layer basal layer
When carrying out refrigeration processing, the long axis direction of the light emitting molecule structure in light emitting functional layer has randomness, so that light emitting functional layer
Emit light to all directions, reduces the luminous efficiency of organic light emitting display panel.To light emitting functional layer basal layer system
Cold treatment, so that the long axis of the light emitting molecule structure of light emitting functional layer tends to plane where being parallel to light emitting functional layer basal layer,
So that the transition dipole moment direction of light emitting molecule structure tends to plane where being parallel to light emitting functional layer basal layer, substantially increase
The luminous efficiency of light emitting functional layer 1 in organic light emitting display panel.
It should be noted that above-described embodiment is only illustrated by taking the light emitting molecule structure of club shaped structure as an example, the present invention
Embodiment is not construed as limiting the concrete shape of light emitting molecule structure, it is ensured that light emitting molecule structure has long axis.
As shown in Figure 1, organic light emitting display panel can also include substrate 20 and set along far from 20 direction of substrate
First electrode 21, the first auxiliary light emission layer 22, light emitting functional layer 1, the second auxiliary light emission layer 23 and the second electrode 24 set.Show
Example property, can be set that first electrode 21 be anode, second electrode 24 is cathode, and the first auxiliary light emission layer 22 is auxiliary for cavity type
Light emitting functional layer 1 is helped, can have multilayered structure, such as may include hole injection layer 221, hole transmission layer 222 and electronics
Barrier layer 223.Second auxiliary light emission layer 23 is the auxiliary light emission functional layer 1 of electron type, also can have multilayered structure, can be with
Including electron injecting layer 231, electron transfer layer 232 and hole blocking layer 233.
Specifically, hole passes through the first auxiliary light emission when voltage is applied to first electrode 21 and second electrode 24
Layer 22 is moved to light emitting functional layer 1, and electronics is moved to light emitting functional layer 1 by the second auxiliary light emission layer 23, and the two is in luminous function
Compound in ergosphere 1, the exciton in 1 material of light emitting functional layer moves to ground state by excitation state and shines.It is provided in an embodiment of the present invention
Light emitting functional layer in organic light emitting display panel uses undoped system, i.e. the specific material mentioned in above-described embodiment of carrier
Compound in material, the exciton in the material moves to ground state realization by excitation state and shines.
Optionally, as shown in figure 4, forming micro-cavity structure between first electrode 21 and second electrode 24, along perpendicular to substrate
The direction of 20 place planes, the distance between first electrode 21 and second electrode 24 are the long d of chamber of micro-cavity structure, be can be set micro-
The long d of the chamber of cavity configuration is more than or equal to 170nm, is less than or equal to 230nm.Specifically, micro-cavity structure can use light refractive index not
Light, is limited in the wavelength region of a very little by the effects such as reflection, total reflection, interference, diffraction or scattering on continuous interface
It is interior, can by the long setting of chamber and and micro-cavity structure in each thicknesses of layers setting, make in the shining of light emitting functional layer 1
The heart is located near the enhancing peak of micro-cavity structure standing internal wave field, to improve the coupling efficiency of device Radiating dipole and intracavitary electric field,
To improve the luminous efficiency of organic light emitting display panel.
In the long d of the chamber of the micro-cavity structure of the different luminescent color pixel regions of adjusting, need to combine actual process requirement, no
With between luminescent color pixel region luminescent layer characteristic and the hole and electronics of each pixel region transmission balance etc. factors it is comprehensive
Conjunction accounts for, can be long come the chamber for adjusting corresponding micro-cavity structure by adjusting the thickness of film layer each in micro-cavity structure as long as guaranteeing
D, while meeting organic light emitting display panel items spectrophotometric data, so that the compound generation of carrier is in light emitting functional layer
In 1, makes the centre of luminescence of light emitting functional layer 1 as close as possible to the enhancing peak position of microcavity standing wave, enhance interference effect to have improved
The light output efficiency of machine light emitting display panel.The long luminous face corresponding with pixel region of the chamber of the corresponding micro-cavity structure of pixel region
Color wavelength is positively correlated, since the wavelength of different colours light is different, the corresponding microcavity knot of the pixel region of different luminescent colors
The chamber of structure is long different.The chamber that the corresponding micro-cavity structure of green pixel area can be set is long corresponding micro- less than red pixel area
The chamber of cavity configuration is long, and the chamber for being greater than the corresponding micro-cavity structure of blue pixel area B is long.
Optionally, organic light emitting display panel can be top emitting device.Specifically, top emitting device is relative to bottom emitting
Its luminous efficiency of device is higher, and setting organic light emitting display panel is top emitting device, and it is aobvious can to further increase organic light emission
Show the luminous efficiency of panel.Optionally, the transmitance that second electrode 24 can be set is more than or equal to 40%, is less than or equal to 60%,
The transmitance for being preferably provided with second electrode 24 is equal to 50%.The too low luminous effect for influencing pixel region of the transmitance of second electrode 24
Rate, the transmitance of second electrode 24 is excessively high to will affect in the micro-cavity structure of organic light emitting display panel formation the refraction of light and anti-
Penetrate process.Second electrode 24 can be using the material with high work function, such as can be indium tin oxide (ITO) or indium zinc oxygen
Compound (IZO), 21 reflecting electrodes of first electrode, reflecting electrode for example can be anti-by silver (Ag), magnesium (Mg) or magnesium silver alloy etc.
Penetrate material composition.
It should be noted that the embodiment of the present invention shows that attached drawing is only exemplary the size for indicating each film layer, light emitting molecule
The size and distribution density of structure do not represent the actual size of each film layer in organic light emitting display panel, light emitting molecule knot
The actual size and actual distribution density of structure.
Organic light emitting display panel provided in an embodiment of the present invention include light emitting functional layer basal layer and be located at shine function
Light emitting functional layer on ergosphere basal layer, the angle of plane where the light direction and light emitting functional layer basal layer of light emitting functional layer
More than or equal to 30 °, it is less than or equal to 90 °, improves the random caused light emitting functional layer edge of molecules align in light emitting functional layer
All directions emit light, low from the probability of the light emission side of organic light emitting display panel transmitting light, organic light emitting display panel
The low problem of the luminous efficiency of middle light emitting functional layer considerably increases and finally emits light from the light emission side of organic light emitting display panel
The probability of line improves the luminous efficiency of light emitting functional layer in organic light emitting display panel.
Fig. 3 is a kind of flow diagram of the production method of organic light emitting display panel provided in an embodiment of the present invention.Such as
Shown in Fig. 3, the production method of organic light emitting display panel includes:
S110, light emitting functional layer basal layer is formed.
Fig. 4 is the schematic diagram of the section structure of the corresponding organic light emitting display panel of step S110.As shown in figure 4, forming hair
Light functional layer basal layer 2, organic light emitting display panel include substrate 20 and the first electrode along separate 20 direction of substrate setting
21 and the first auxiliary light emission layer 22, substrate 20 can be the array substrate of organic light emitting display panel, the first auxiliary light emission layer 22
For the auxiliary light emission functional layer 1 of cavity type, the first auxiliary light emission layer 22 can have multilayered structure, such as may include hole note
Enter layer 221, hole transmission layer 222 and electronic barrier layer 223, light emitting functional layer basal layer 2 may include substrate 20, first electrode
21 and first one or more of the auxiliary light emission layer 22.
S120, refrigeration processing is carried out to light emitting functional layer basal layer.
As shown in figure 4, carrying out refrigeration processing to light emitting functional layer basal layer 2, i.e., to substrate 20, first electrode 21 and
One in one auxiliary light emission layer 22 carries out refrigeration processing, preferably, can be to one directly contacted with the light emitting functional layer
It is a to carry out refrigeration processing, refrigeration processing specially is carried out to the electronic barrier layer 223 in the first auxiliary light emission layer.Illustratively,
The temperature that refrigeration processing is carried out to light emitting functional layer basal layer 2 can be set and be more than or equal to 5 DEG C, be less than or equal to 25 DEG C.
In the light emitting functional layer formed in organic light emitting display panel, mask plate need to be used to realize the figure of light emitting functional layer
To form different pixel regions, the too high or too low for temperature of processing of freezing can generate centainly the shape of mask plate case
It influences, i.e., so that mask plate is there are a degree of deformation, influences light emitting functional layer and realize patterned accuracy, influence organic
The display effect of light emitting display panel.The temperature for carrying out refrigeration processing to light emitting functional layer basal layer 2 is set and is more than or equal to 5 DEG C,
Less than or equal to 25 DEG C, the probability that can finally emit beam from the light emission side of organic light emitting display panel in increase is improved organic
In light emitting display panel while the luminous efficiency of light emitting functional layer, avoids mask plate deformation from influencing light emitting functional layer and realize pattern
The accuracy of change and the display effect of organic light emitting display panel.
S130, light emitting functional layer is formed on refrigeration treated light emitting functional layer basal layer.
Fig. 5 is the schematic diagram of the section structure of the corresponding organic light emitting display panel of step S130.As shown in figure 5, freezing
Light emitting functional layer 1 is formed on treated light emitting functional layer basal layer 2, the lower light emitting functional layer basal layer 2 of temperature makes
The long axis a direction of the light emitting molecule structure 11 in light emitting functional layer 1 made thereon tends to be parallel to light emitting functional layer base
2 place plane of bottom, i.e., so that the light direction of light emitting functional layer 1 and the angle of 2 place plane of light emitting functional layer basal layer become
In 90 °, light emitting functional layer 1 shines along the direction perpendicular to plane where organic light emitting display panel, substantially increases organic hair
The luminous efficiency of light display panel.
A kind of organic light-emitting display device that the embodiment of the present invention also provides, Fig. 6 are one kind provided in an embodiment of the present invention
The structural schematic diagram of organic light-emitting display device.As shown in fig. 6, organic light-emitting display device 91 includes having in above-described embodiment
Machine light emitting display panel 92, therefore organic light-emitting display device provided in an embodiment of the present invention 91 also has institute in above-described embodiment
The beneficial effect of description, details are not described herein again.Illustratively, organic light-emitting display device can be mobile phone, computer or wearable
The electronic equipments such as equipment, the embodiment of the present invention are not construed as limiting the concrete form of organic light-emitting display device.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments here, be able to carry out for a person skilled in the art it is various it is apparent variation, again
Adjustment and substitution are without departing from protection scope of the present invention.Therefore, although by above embodiments to the present invention carried out compared with
For detailed description, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, can be with
Including more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of organic light emitting display panel characterized by comprising
Light emitting functional layer basal layer and the light emitting functional layer on the light emitting functional layer basal layer, the light emitting functional layer
Light direction and the light emitting functional layer basal layer where the angle of plane be more than or equal to 30 °, be less than or equal to 90 °.
2. organic light emitting display panel according to claim 1, which is characterized in that the light direction of the light emitting functional layer
It is equal to 90 ° with the angle of plane where the light emitting functional layer basal layer.
3. organic light emitting display panel according to claim 1, which is characterized in that the light emitting molecule of the light emitting functional layer
The angle of plane is more than or equal to 0 ° where the long axis direction of structure and the light emitting functional layer basal layer, is less than or equal to 45 °.
4. organic light emitting display panel according to claim 3, which is characterized in that the light emitting molecule structure is rodlike point
Minor structure.
5. organic light emitting display panel according to claim 4, which is characterized in that the light emitting functional layer includes blue picture
The light emitting functional layer of the light emitting functional layer in plain region, the light emitting functional layer of green pixel area and red pixel area；
The light emitting functional layer meets at least one following condition:
The material for constituting the light emitting functional layer of the blue pixel area includes 4,4 '-bisstyryl carbazole biphenyls, N, and N '-is bis-
(3- methylbenzene)-N, N '-biphenyl diamine or 4, one of 4 '-(9,9 '-spiro fluorene) -2,7- bis- (N, N- diphenylamines) or
It is several；
The material for constituting the light emitting functional layer of the green pixel area includes 4,4 '-bis- [4- (diphenylamines) styryl] biphenyl
Or 4,4-N, one or more of N- diazole-biphenyl；
The material for constituting the light emitting functional layer of the red pixel area includes rubrene, 2,7- dithienyl -9-Fluorenone or 4-
One or more of dicyan ylmethyl -2- methyl -6- (p- dimethyl amine styrene) H- pyrans.
6. organic light emitting display panel according to claim 1, which is characterized in that the organic light emitting display panel includes
Substrate and the first electrode along separate orientation substrate setting, the first auxiliary light emission layer, light emitting functional layer, the second auxiliary hair
Photosphere and second electrode, the light emitting functional layer basal layer include the substrate, the first electrode and first auxiliary
One or more of luminescent layer.
7. organic light emitting display panel according to claim 1, which is characterized in that the first electrode and second electricity
Micro-cavity structure is formed between pole；
Along the direction perpendicular to plane where organic light emitting display panel, between the first electrode and the second electrode away from
Long from the chamber for the micro-cavity structure, the chamber of the micro-cavity structure is long to be more than or equal to 170nm, is less than or equal to 230nm.
8. a kind of production method of the organic light emitting display panel as described in claim any one of 1-7 characterized by comprising
Form light emitting functional layer basal layer；
Refrigeration processing is carried out to the light emitting functional layer basal layer；
Light emitting functional layer is formed on refrigeration treated light emitting functional layer basal layer.
9. the production method of organic light emitting display panel according to claim 8, which is characterized in that the refrigeration processing
Temperature is more than or equal to 5 DEG C, is less than or equal to 25 DEG C.
10. a kind of organic light-emitting display device, which is characterized in that aobvious including the described in any item organic light emissions of claim 1-7
Show panel.
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