CN108493210A - A kind of organic light emitting display panel and its organic light-emitting display device - Google Patents
A kind of organic light emitting display panel and its organic light-emitting display device Download PDFInfo
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- CN108493210A CN108493210A CN201810194493.5A CN201810194493A CN108493210A CN 108493210 A CN108493210 A CN 108493210A CN 201810194493 A CN201810194493 A CN 201810194493A CN 108493210 A CN108493210 A CN 108493210A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Abstract
A kind of organic light emitting display panel of present invention offer and its organic light-emitting display device, are related to display technology field, for improving the visual angle colour cast under big visual angle.The organic light emitting display panel includes multiple sub-pixels being arranged in array and go out light color at least three kinds of differences, sub-pixel includes Organic Light Emitting Diode, Organic Light Emitting Diode includes cathode and anode, and the organic layer between cathode and anode, cathode and anode and the organic layer between cathode and anode constitute microcavity；Wherein, at least one Organic Light Emitting Diode includes the first microcavity and the second microcavity, first microcavity is located at the central area of Organic Light Emitting Diode, second microcavity is located at the peripheral region of Organic Light Emitting Diode, and, N times of the chamber length of a length of second microcavity of chamber of first microcavity, for the range of N in 1.9h between 2.1h, h is that the chamber of the second microcavity is long.Above-mentioned organic light emitting display panel is suitable for display device.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of organic light emitting display panels and its organic light emitting display to fill
It sets.
Background technology
Receive in the sense organ of people information it is most be exactly the organs of vision (eyes), in production and life, Ren Menxu
It is increasingly utilized abundant visual information, thus display technology plays very important angle in mankind nowadays society
Color.So far from appearance, technology development is also very swift and violent for display technology, as the development and the mankind of society are to material life demand
It is continuously improved, current display technology is high, long towards high contrast, high resolution, full-color EL display, low-power consumption, reliability
Service life and thin and light direction quickly stride forward.
Wherein, Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display device is due to tool
Have the advantages that wide self-luminous, fast response time, visual angle, high-resolution, high brightness, bending resistance be strong, low-power consumption, is increasingly becoming liquid
The strong rival of LCD panel is known as next-generation dreamlike display technology.
Visual angle colour cast is generally existing and urgent problem to be solved in OLED display device.
Invention content
A kind of organic light emitting display panel of offer of the embodiment of the present invention and its organic light-emitting display device, regard greatly for improving
Visual angle colour cast under angle.
In a first aspect, the present invention provides a kind of organic light emitting display panel, organic light emitting display panel includes：
Multiple sub-pixels being arranged in array and go out light color at least three kinds of differences, the sub-pixel includes organic hair
Optical diode, the Organic Light Emitting Diode include cathode and anode, and having between the cathode and the anode
Machine layer, the cathode and the anode and the organic layer between the cathode and the anode constitute microcavity；
Wherein, at least one Organic Light Emitting Diode includes the first microcavity and the second microcavity, first microcavity position
In the central area of the Organic Light Emitting Diode, second microcavity is located at the peripheral region of the Organic Light Emitting Diode,
Also, N times of the chamber length of a length of second microcavity of chamber of first microcavity, in 1.9h between 2.1h, h is for the range of N
The chamber of second microcavity is long.
Second aspect, the present invention provide a kind of organic light-emitting display device, and organic light-emitting display device includes the present invention the
Organic light emitting display panel involved by one side.
Any technical solution in above-mentioned technical proposal has the advantages that：
The same sub-pixel in the present embodiment has the first microcavity and the second microcavity, since the chamber length of the first microcavity is
N times of the chamber length of second microcavity, therefore the interference strength of the two is different.Under big visual angle, specific wavelength in the first microcavity
After light enters the second microcavity, the second microcavity destroys the microcavity effect of the light of the specific wavelength, that is, destroys the specific wavelength
The wide-angle interference phenomenon of light improves visual angle colour cast, the color under especially big visual angle to improve the viewing angle characteristic of the light
It is significantly improved partially.Also, since the first microcavity is located at central area, the second microcavity is located at peripheral region, the first microcavity
No matter interior light projects clockwise or counterclockwise, and wide-angle interference can be destroyed by the second microcavity, therefore can be improved under the visual angle
Colour cast.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
A kind of structural schematic diagram for the organic light emitting display panel that Fig. 1 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 2 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 3 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 4 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 5 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 6 is provided by the embodiment of the present invention；
The principle schematic for the organic light emitting display panel that Fig. 7 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 8 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 9 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Figure 10 is provided by the embodiment of the present invention；
The structural schematic diagram for the organic light-emitting display device that Figure 11 is provided by the embodiment of the present invention.
Specific implementation mode
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
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is the purpose only merely for description specific embodiment, is not intended to be limiting
The present invention.In the embodiment of the present invention and "an" of singulative used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate：Individualism A, exists simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
It will be appreciated that though in embodiments of the present invention microcavity, but these may be described using term first, second etc.
Microcavity should not necessarily be limited by these terms.These terms are only used for microcavity being distinguished from each other out.For example, not departing from the embodiment of the present invention
In the case of range, the first microcavity can also be referred to as the second microcavity, and similarly, it is micro- that the second microcavity can also be referred to as first
Chamber.
It should be noted that the nouns of locality such as "upper", "lower", "left", "right" described in the embodiment of the present invention are with attached drawing
Shown in angle come what is be described, should not be construed as the restriction to the embodiment of the present invention.In addition within a context, it is also necessary to manage
Solution can not only be formed directly into another when mentioning an element and being formed on "above" or "below" another element
Either "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower" for a element "upper".
It is detailed introduce the present embodiment before, be simply situated between to the structure for the organic light emitting display panel being related to
It continues：
As shown in Figure 1, a kind of structural schematic diagram for the organic light emitting display panel that its embodiment of the present invention is provided, organic
Light emitting display panel 1 includes first substrate 11, and multiple Organic Light Emitting Diodes on 11 1 side surface of first substrate are arranged
131, each Organic Light Emitting Diode 131 includes anode 12, cathode 14 and the organic layer being arranged between anode 12 and cathode 14
13, which is in contact with a side surface of first substrate 11, and cathode 14 is located at one that organic layer 13 deviates from first substrate 11
Side surface.Anode 12 and cathode 14 it should be noted that anode 12 and cathode 14 are public film layer, therefore in Fig. 1 are one
A whole film layer.
It is understood that the first substrate 11 in the present embodiment can be flexible base board, corresponding organic light emitting display face
Plate 1 can be flexible organic light emitting display panel, and flexible organic light emitting display panel has low-power consumption and the special efficacys such as flexible, is applicable in
In various display equipment, it is particularly suitable in wearable display equipment.Optionally, the material of flexible base board is polyester-imide or gathers
Terephthalate fat resin.In addition, first substrate 11 can also be rigid substrates, corresponding organic light emitting display panel is
Rigid organic light emitting display panel.In fact, the present embodiment is not particularly limited to the material of organic light emitting display panel.
In the present embodiment, positive voltage can be applied to anode 12 during electroluminescent.Anode 12 in the present embodiment
Material can be tin indium oxide.Specifically, anode 12 includes at least reflective membrane, reflective membrane can be located at anode 12 and deviate from the first base
On one side surface of plate 11, the material of reflective membrane can be silver.Anode 12 may also include transparent conductive film, be located at reflective membrane
Away from a side surface of first substrate 11, the material of transparent conductive film can be tin indium oxide or indium zinc oxide.
In the present embodiment, negative voltage can be applied to cathode 14 during electroluminescent.The material of cathode 14 can be Ag,
The harmonic functions such as Al, Ca, In, Li, Mg metal material or low work function composite material.The material of cathode 14 in this example
It can be one kind in U.S. silver alloy, silver alloy, silver-colored ytterbium alloy or silver-colored rare earth alloys.
It is understood that there is the organic light emitting display panel 1 m kinds to go out light color, m is whole more than or equal to 3
Number, exemplary implementation may include that three kinds go out light color, respectively red, green and blue, each Organic Light Emitting Diode
131 correspondence one kind going out light color.
With continued reference to Fig. 1, the organic light emitting display panel 1 in this example can be regarded as top emitting organic light emitting display face
Plate, that is to say, that anode 12 can be regarded as total reflection anode, and cathode 14 can be regarded as semitransparent cathode, and cathode is arranged far from
The side of first substrate 11.It is totally reflected anode and constitutes microcavity (resonant cavity) with semitransparent cathode, when microcavity chamber is long and optical wavelength
When meeting certain relationship, the light of specific wavelength (a certain monochromatic wavelength) can be strengthened, and spectrum narrows, and be occurred micro-
Chamber effect.Microcavity effect has the effects that selection to light source, narrows and reinforce, and is often used to improve the coloration of device, reinforces spy
The emissive porwer of standing wave length and the luminescent color etc. for changing device.
In the prior art, microcavity effect includes wide-angle interference and two kinds of interference patterns of multiple-beam interference, wherein due to wide-angle
The presence of interference can influence the viewing angle characteristic of device, i.e., with the offset at visual angle, glow peak shifts, cause the difference of brightness with
The problems such as drift of coloration, especially under big visual angle, optical property is bad, and colour cast is more serious.
To solve the above-mentioned problems, inventor devises following skill scheme：
The present embodiment provides a kind of organic light emitting display panels, as shown in Fig. 2, it is had by what the embodiment of the present invention provided
Another structural schematic diagram of machine light emitting display panel, the organic light emitting display panel 1 include：It is multiple to be arranged in array and have
There are at least three kinds of differences to go out the sub-pixel of light color, Fig. 2 exemplarily show that three kinds of differences go out the sub-pixel of light color, respectively
For red sub-pixel 2, green sub-pixels 4 and blue subpixels 6, wherein red sub-pixel 2 includes red organic light-emitting diodes
Pipe 21, green sub-pixels 4 include green organic light emitting diode (LED) 41, and blue subpixels 6 include blue Organic Light Emitting Diode 61.
As shown in figure 3, another structural schematic diagram of its organic light emitting display panel provided by the embodiment of the present invention,
Organic Light Emitting Diode 131 includes cathode 14 and anode 12, and the organic layer 13 between cathode 14 and anode 12, the moon
Pole 14 and anode 12 and the organic layer 13 between cathode 14 and anode 12 constitute microcavity 15.Wherein, at least one organic
Light emitting diode 131 includes the first microcavity 151 and the second microcavity 152, and the first microcavity 151 is located at Organic Light Emitting Diode 131
Central area, the second microcavity 152 is located at the peripheral region of Organic Light Emitting Diode 131, also, the chamber of the first microcavity 151 is a length of
N times of the chamber length of second microcavity 152, for the range of N in 1.9h between 2.1h, h is that the chamber of the second microcavity is long.
It should be noted that the chamber length of the first microcavity 151 can be regarded as the first microcavity on anode 12 to 14 direction of cathode
The chamber length of 151 thickness, the second microcavity 152 is also such.
" the first microcavity is located at the central area of Organic Light Emitting Diode, and the second microcavity is located at organic light emission in the present embodiment
The peripheral region of diode " can have the following two kinds understanding：
The first, as shown in figure 4, another structure of its organic light emitting display panel provided by the embodiment of the present invention
Schematic diagram, first microcavity 151 are arranged in the central area of Organic Light Emitting Diode 131, and second microcavity 152 is located at the
The peripheral region of one microcavity 151, central area anode 12 orthographic projection in the plane with peripheral region where anode 12
Orthographic projection in plane is not overlapped.
Under big visual angle, after the light of the specific wavelength in the first microcavity 151 enters the second microcavity 152, the second microcavity 152 is broken
It is broken the microcavity effect of the light of the specific wavelength, that is, the wide-angle interference phenomenon of the light of the specific wavelength is destroyed, to improve
The viewing angle characteristic of the light, improves visual angle colour cast, and the colour cast under especially big visual angle is significantly improved.Also, it is located at
The first microcavity in central area accounts for the 60%~80% of entire Organic Light Emitting Diode area, ensures the luminous effect under positive visual angle
Rate.
Second, as shown in figure 3, first microcavity 151 is arranged in the central area of Organic Light Emitting Diode 131, two
A second microcavity 152 is each positioned at the both sides of central area, central area anode 12 orthographic projection in the plane and peripheral region
Domain anode 12 orthographic projection in the plane it is not overlapping.Since the both sides of the first microcavity 151 are arranged, there are two the second microcavitys
152, under big visual angle, no matter clockwise or counterclockwise its wide-angle interference can be all destroyed the light in the first microcavity 151, in turn
Colour cast under the visual angle is improved.
Also, " at least one Organic Light Emitting Diode includes the first microcavity and the second microcavity " can have following three in this example
Kind is explained：
The first, the corresponding Organic Light Emitting Diode of sub-pixel that at least three kinds of differences go out light color can be micro- with first
Chamber and the second microcavity, Red Organic Electroluminescence Devices 21 include the first microcavity 151 and the second microcavity 152, green organic light emission two
Pole pipe 41 includes the first microcavity 151 and the second microcavity 152, and blue Organic Light Emitting Diode 61 also includes the first microcavity 151 and the
Two microcavitys 152.
Second, only it is a kind of go out light color sub-pixel there is the first microcavity and the second microcavity to be as shown in Fig. 5
Another structural schematic diagram for the organic light emitting display panel that the embodiment of the present invention is provided, illustratively, only red sub- picture
Plain 2 corresponding Red Organic Electroluminescence Devices have the first microcavity 151 and the second microcavity 152, green sub-pixels and the sub- picture of blue
Only there are one microcavitys for the corresponding Organic Light Emitting Diode of element.
The third, two kinds of sub-pixels for going out light color have the first microcavity and the second microcavity, as shown in fig. 6, it is this hair
Another structural schematic diagram for the organic light emitting display panel that bright embodiment is provided, illustratively, red sub-pixel 2 and green
4 corresponding Organic Light Emitting Diode of sub-pixel has the first microcavity and the second microcavity.
The same sub-pixel in the present embodiment has the first microcavity 151 and the second microcavity 152, due to the first microcavity 151
Chamber length be the second microcavity 152 chamber length N times, therefore the two interference strength difference.Under big visual angle, the first microcavity 151
After the light of interior specific wavelength enters the second microcavity 152, the second microcavity 152 destroys the microcavity effect of the light of the specific wavelength,
The wide-angle interference phenomenon for destroying the light of the specific wavelength improves visual angle color to improve the viewing angle characteristic of the light
Partially, the colour cast under especially big visual angle is significantly improved.Also, since the first microcavity 151 is located at central area, second is micro-
Chamber is located at peripheral region, and no matter the light in the first microcavity 151 projects clockwise or counterclockwise, and wide-angle interference can be micro- by second
Chamber 152 destroys, therefore can improve the colour cast under the visual angle.
The present embodiment can be adjusted its microcavity quantity for being included according to different colours sub-pixel colour cast power, to change
It is apt to each and goes out the visual angle color offset phenomenon under the big visual angle of light color.
In order to which those skilled in the art can be apparent from the present embodiment, below to the organic light emitting display of the present embodiment
The principle of luminosity of panel is simply introduced：
As shown in fig. 7, the principle schematic of its organic light emitting display panel provided by the embodiment of the present invention, corresponding to appoint
It anticipates for an Organic Light Emitting Diode 131, applies positive voltage to anode 12, apply negative voltage to cathode 14, anode 12 generates
Hole be injected into corresponding organic layer 13, cathode 14 generate electron injection to corresponding organic layer 13 in,
Electrons and holes occur compound and generate exciton, and sharp radiation transistion makes organic light emitting display panel shine.
In one embodiment, the resonance modulus of the first microcavity is 2, and the resonance modulus of the second microcavity is 1.This implementation
In example, the resonance modulus that the chamber length of resonance modulus and the microcavity is proportionate, therefore works as the first microcavity 151 is 2, the second microcavity
When 152 resonance modulus is 1, show that the thickness of the first microcavity 151 is 2 times of 152 thickness of the second microcavity.As shown in figure 3, first
Thickness of the microcavity 151 on anode 12 to 14 direction of cathode is thickness of second microcavity 152 on anode 12 to 14 direction of cathode
2 times.The thickness of the first microcavity in centrally disposed region is more than the thickness of the second microcavity in peripheral region, it is ensured that
The range total amount of light in central area, and then ensure light extraction efficiency.
In one embodiment, as shown in figure 8, the first microcavity 151 includes that the first hole transmission layer 1321 and second is empty
Cave transport layer 1322, the second hole transmission layer 1322 are located at the side surface that the first hole transmission layer 1321 deviates from anode 12；The
Two microcavitys 152 also include the second hole transmission layer 1322.Since the first microcavity 151 includes the first hole transmission layer 1321 and second
Hole transmission layer 1322, the second microcavity 152 only include the second hole transmission layer 1322, therefore, when lighting the sub-pixel, hole
Carrier from anode during flowing to organic layer, on anode 12 to the direction of cathode 14, the first microcavity and the second microcavity
There is no public hole transmission layer, therefore avoid the lateral transfer of holoe carrier, and then reduces lateral leakage current and keep away
Exempt from lateral electric current crosstalk, improves picture display effect.
Further, with continued reference to Fig. 8, the second hole transmission layer 1322 from anode 12 to the direction of cathode 14 on thickness
Degree be less than the first hole transmission layer 1321 from anode 12 to the direction of cathode 14 on thickness.The thickness of second hole transmission layer is small
In the thickness of the first hole transmission layer, can on the second microcavity to the direction of the first microcavity (direction as shown by the arrows in Figure 8) shape
It at difference in thickness, can further avoid the row of holoe carrier from migrating at this time, further avoid row electric current crosstalk.
You need to add is that the material of the first hole transmission layer and the material of the second hole transmission layer can be identical or not
Together, the present embodiment is preferred, and the material of the first hole transmission layer is different from the material of the second hole transmission layer, can avoid carrying in this way
The row migration of stream.
In one embodiment, in conjunction with Fig. 2 and Fig. 6, organic light emitting display panel 1 includes red sub-pixel 2, green
Pixel and 4 blue subpixels 6, wherein the Organic Light Emitting Diode included by red sub-pixel 2 and/or green sub-pixels 4 has
First microcavity 151 and the second microcavity 152.Since wavelength and thickness are proportionate, blue wavelength is in 400~480nm, compared to red
Color wavelength and green wavelength are shorter, therefore the chamber length (thickness of the organic layer of blue subpixels) of the corresponding microcavity of blue subpixels
It is relatively small, two microcavitys can not be made, so as to simplify preparation process.
Further, continue to participate in Fig. 8, the first microcavity 151 of red sub-pixel 2 further includes third hole transmission layer
1323, third hole transmission layer 1323 is located at the side surface that the second hole transmission layer 1322 deviates from anode 12；Green sub-pixels
4 the first microcavity 151 further includes the 4th hole transmission layer 1324, and the 4th hole transmission layer 1324 is located at the second hole transmission layer
1322 deviate from a side surface of anode 12.
Since red wavelength is bigger than green and blue, in 600~620nm or so, therefore red sub-pixel is corresponding
The chamber length of first microcavity is long more than the chamber of the first microcavity of green sub-pixels and/or the first microcavity of blue subpixels.
It should be noted that the Organic Light Emitting Diode corresponding to red sub-pixel 2 further includes setting electron transfer layer 134
With luminescent layer 1331, electron transfer layer 134 is arranged in cathode 14 close to the side of anode 12, and luminescent layer 1331 is arranged in electronics
Transport layer 134 is close to the side of anode 12.First microcavity 151 of green sub-pixels 4 from anode 12 on the direction of cathode 14 according to
Secondary includes anode 12, the first hole transmission layer 1321, the second hole transmission layer 1322, the 4th hole transmission layer 1324, luminescent layer
1332, electron transfer layer 134 and cathode 14；It further includes the second sky that second microcavity 152 of green sub-pixels 4, which removes anode and cathode,
Cave transport layer 1322, luminescent layer 132 and electron transfer layer 134.Blue subpixels remove except anode 12 and cathode 14
First hole transmission layer 1321, luminescent layer 1333 and electron transfer layer 134.Wherein, the electron transfer layer 134 of three sub-pixels
Thickness and material can be identical, preparation process can be simplified in this way.In addition, as shown in figure 8, when red sub-pixel the second microcavity and
When second microcavity of green sub-pixels is adjacent, the public film layer (anode, the second hole transmission layer) of the two can be prepared simultaneously, in this way
Preparation section can be saved.
Further, as shown in figure 9, the another kind of its organic light emitting display panel provided by the embodiment of the present invention
Structural schematic diagram, the material of third hole transmission layer 1323 with can the material of the second hole transmission layer 1322 it is identical.At this point, making
When the first microcavity of standby red sub-pixel, respective thickness can be once prepared so as to simplify preparation process.
In one embodiment, with continued reference to shown in Figure 10, the microcavity of blue subpixels 6 also includes the first hole transport
Layer 1321 and the second hole transmission layer 1322, the second hole transmission layer 1322 are located at the first hole transmission layer 1321 and deviate from anode 12
A side surface；The microcavity of blue subpixels further includes the 5th hole transmission layer 1325, and the 5th hole transmission layer 1325 is located at the
Two hole transmission layers 1322 deviate from a side surface of anode 12.In the present embodiment, the material of the second hole transmission layer 1322 can be with
The material of third hole transmission layer 1323 is identical.
In one embodiment, the resonance modulus of the microcavity of blue subpixels is 2.Due to red sub-pixel and green
The wavelength of pixel is longer relative to the wavelength of blue subpixels, the first microcavity corresponding to red sub-pixel and green sub-pixels
Chamber length is also larger, and the second microcavity can be prepared while ensureing to occur microcavity effect.But due to the corresponding wavelength model of blue
It is trapped among 400~480nm so far, it is shorter compared to red wavelength and green wavelength, therefore the chamber of the corresponding microcavity of blue subpixels
Long (thickness of the organic layer of blue subpixels) is relatively small, it may not be necessary to two microcavitys is prepared, so as to simplify preparation process.
The present embodiment provides a kind of organic light-emitting display devices, as shown in figure 11, are provided by the embodiment of the present invention
The structural schematic diagram of organic light-emitting display device, the organic light-emitting display device 500 include organic hair that the present embodiment is related to
Light display panel 1.It should be noted that, although Figure 11 with mobile phone as an example, the still organic light-emitting display device and unlimited
It is made as mobile phone, specifically, the organic light-emitting display device can include but is not limited to personal computer (Personal
Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), radio hand-held equipment, tablet electricity
Any electronic equipments with display function such as brain (Tablet Computer), MP4 players or television set.
Organic light-emitting display device in the present embodiment includes above-mentioned organic light emitting display panel, therefore same in the present embodiment
One sub-pixel has the first microcavity and the second microcavity, since the chamber length of the first microcavity is N times of the chamber length of the second microcavity,
Therefore the interference strength of the two is different.Under big visual angle, after the light of the specific wavelength in the first microcavity enters the second microcavity, second
Microcavity destroys the microcavity effect of the light of the specific wavelength, that is, destroys the wide-angle interference phenomenon of the light of the specific wavelength, to
The viewing angle characteristic for improving the light, improves visual angle colour cast, and the colour cast under especially big visual angle is significantly improved.And
And since the first microcavity is located at central area, the second microcavity is located at peripheral region, and no matter clockwise the light in the first microcavity is or inverse
Hour hands project, and wide-angle interference can be destroyed by the second microcavity, therefore can improve the colour cast under the visual angle.
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
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of organic light emitting display panel, which is characterized in that including：
Multiple sub-pixels being arranged in array and go out light color at least three kinds of differences, the sub-pixel includes organic light emission two
Pole pipe, the Organic Light Emitting Diode include cathode and anode, and the organic layer between the cathode and the anode,
The cathode and the anode and the organic layer between the cathode and the anode constitute microcavity；
Wherein, at least one Organic Light Emitting Diode includes the first microcavity and the second microcavity, and first microcavity is located at institute
The central area of Organic Light Emitting Diode is stated, second microcavity is located at the peripheral region of the Organic Light Emitting Diode, also,
N times of the chamber length of a length of second microcavity of chamber of first microcavity, for the range of N in 1.9h between 2.1h, h is second micro-
The chamber of chamber is long.
2. organic light emitting display panel according to claim 1, which is characterized in that the resonance modulus of first microcavity is
2, the resonance modulus of second microcavity is 1.
3. organic light emitting display panel according to claim 1, which is characterized in that
First microcavity includes the first hole transmission layer and the second hole transmission layer, and second hole transmission layer is located at described
First hole transmission layer deviates from a side surface of the anode；
Second microcavity also includes the second hole transmission layer.
4. organic light emitting display panel according to claim 3, which is characterized in that
Second hole transmission layer from the anode to the direction of the cathode on thickness be less than first hole transport
Layer from the anode to the direction of the cathode on thickness.
5. organic light emitting display panel according to claim 1, which is characterized in that
The organic light emitting display panel includes red sub-pixel, green sub-pixels and blue subpixels, wherein the red son
Organic Light Emitting Diode included by pixel and/or green sub-pixels has the first microcavity and the second microcavity.
6. organic light emitting display panel according to claim 5, which is characterized in that the first microcavity of the red sub-pixel
Further include third hole transmission layer, the third hole transmission layer is located at one that second hole transmission layer deviates from the anode
Side surface；
First microcavity of the green sub-pixels further includes the 4th hole transmission layer, and the 4th hole transmission layer is located at described the
Two hole transmission layers deviate from a side surface of the anode.
7. organic light emitting display panel according to claim 6, which is characterized in that
The material of the third hole transmission layer is identical as the material of the second hole transmission layer.
8. organic light emitting display panel according to claim 6, which is characterized in that
The microcavity of the blue subpixels also includes the first hole transmission layer and the second hole transmission layer, second hole transport
Layer is located at the side surface that first hole transmission layer deviates from the anode；
The microcavity of the blue subpixels further includes the 5th hole transmission layer, and it is empty that the 5th hole transmission layer is located at described second
Cave transport layer deviates from a side surface of the anode.
9. organic light emitting display panel according to claim 5, which is characterized in that
The resonance modulus of the microcavity of the blue subpixels is 2.
10. a kind of organic light-emitting display device, which is characterized in that aobvious including claim 1~9 any one of them organic light emission
Show panel.
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Effective date of registration: 20211022 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 201201 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |