CN107845669B - Organic light emitting display panel and display device - Google Patents

Organic light emitting display panel and display device Download PDF

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Publication number
CN107845669B
CN107845669B CN201711174191.3A CN201711174191A CN107845669B CN 107845669 B CN107845669 B CN 107845669B CN 201711174191 A CN201711174191 A CN 201711174191A CN 107845669 B CN107845669 B CN 107845669B
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organic light
light emitting
emitting diode
mode
organic
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CN107845669A (en
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王湘成
牛晶华
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Wuhan Tianma Microelectronics Co Ltd
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Shanghai Tianma AM OLED Co Ltd
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/85Arrangements for extracting light from the devices
    • H10K50/852Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair

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  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a kind of organic light emitting display panel and display devices, the Organic Light Emitting Diode for issuing same color includes the Organic Light Emitting Diode of the first light-emitting mode and the Organic Light Emitting Diode of second of light-emitting mode, each light-emitting mode corresponds to a color-visual angle curve, that is, the color of two kinds of light-emitting modes is different with the variation tendency at visual angle, in default angular field of view, coordinate value of the Organic Light Emitting Diode of the first light-emitting mode in CIE xyz chromaticity coordinate is consistently greater than the coordinate value of the Organic Light Emitting Diode of second of light-emitting mode, according to the biggish color of two species diversity-visual angle curve, synthesis obtains a brightness with the slowly varying Color in visual angle-visual angle curve.To improve colour cast problem in default angular field of view, display effect is improved.

Description

Organic light emitting display panel and display device
Technical field
The present invention relates to field of display technology, espespecially a kind of organic light emitting display panel and display device.
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 display device, and for improving visual angle colour cast problem, raising has The display effect of machine light emitting display panel.
The embodiment of the invention provides a kind of organic light emitting display panels, 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 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;
It is same go out light color the Organic Light Emitting Diode with the first light-emitting mode and described have second In the Organic Light Emitting Diode of kind light-emitting mode, the pre- of angular angle of squint movement is being faced from the organic light emitting display panel If in angular field of view, x coordinate of the Organic Light Emitting Diode with the first light-emitting mode in CIE xyz chromaticity coordinate X coordinate value of the value greater than the Organic Light Emitting Diode with second of light-emitting mode in CIE xyz chromaticity coordinate, and/ Or, y-coordinate value of the Organic Light Emitting Diode with the first light-emitting mode in CIE xyz chromaticity coordinate is greater than described Y-coordinate value of the Organic Light Emitting Diode with second of light-emitting mode in CIE xyz chromaticity coordinate.
Correspondingly, the embodiment of the invention also provides a kind of display device, including provided in an embodiment of the present invention above-mentioned have Machine light emitting display panel.
The present invention has the beneficial effect that:
A kind of organic light emitting display panel and display device provided in an embodiment of the present invention, issue the organic of same color Light emitting diode includes the Organic Light Emitting Diode of the first light-emitting mode and the organic light-emitting diodes of second of light-emitting mode Pipe, a corresponding color-visual angle curve of each light-emitting mode, that is to say, that the color of two kinds of light-emitting modes is with visual angle Variation tendency is different, and in default angular field of view, the Organic Light Emitting Diode of the first light-emitting mode is in CIE xyz chromaticity coordinate In coordinate value be consistently greater than second of light-emitting mode Organic Light Emitting Diode coordinate value, according to the biggish face of two species diversity Color-visual angle curve, synthesis obtain a brightness with the slowly varying Color in visual angle-visual angle curve.To in default view In angular region, improve colour cast problem, improves display effect.
Detailed description of the invention
Fig. 1 is the principle of luminosity figure of Organic Light Emitting Diode provided by the embodiment of the present invention;
Fig. 2 is curve of the light x in CIE xyz chromaticity coordinate and y that issues of Organic Light Emitting Diode with visual angle change Schematic diagram;
Fig. 3 is the color for the light that Organic Light Emitting Diode issues with the curve synoptic diagram of visual angle change;
Fig. 4 is x of the light of the Organic Light Emitting Diode sending of two kinds of light-emitting modes in CIE xyz chromaticity coordinate with visual angle The curve synoptic diagram of variation;
Fig. 5 is that the color for the light that the Organic Light Emitting Diode of two kinds of light-emitting modes issues is illustrated with the curve of visual angle change Figure;
Fig. 6 is that a kind of structure of the Organic Light Emitting Diode with second of light-emitting mode provided in an embodiment of the present invention is shown It is intended to;
Fig. 7 is that a kind of structure of the Organic Light Emitting Diode with the first light-emitting mode provided in an embodiment of the present invention is shown It is intended to;
Fig. 8 is that the color for the light that the Organic Light Emitting Diode of two kinds of light-emitting modes in one embodiment issues becomes with visual angle The curve synoptic diagram of change;
Fig. 9 is the color for the light that the Organic Light Emitting Diode of two kinds of light-emitting modes in another embodiment issues with visual angle The curve synoptic diagram of variation;
Figure 10 is a kind of one of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention;
Figure 11 is the second structural representation that the present invention implements a kind of organic light emitting display panel that embodiment provides;
Figure 12 is a kind of third structural representation of organic light emitting display panel provided in an embodiment of the present invention;
Figure 13 is the four of a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention;
Figure 14 is the five of a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention;
Figure 15 is the six of a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention;
Figure 16 is the seven of a kind of structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention;
Figure 17 is a kind of structural schematic diagram of display device provided in an 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, It shows as shining.
Specifically, the embodiment of the invention provides a kind of organic light emitting display panels, as shown in Figure 10 to Figure 16, comprising:
First Organic Light Emitting Diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03;
First Organic Light Emitting Diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 are respectively used for Issue one of feux rouges, green light or blue light;
Wherein, the first Organic Light Emitting Diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 At least one of include Organic Light Emitting Diode with the first light-emitting mode V1 and with second of light-emitting mode V2 Organic Light Emitting Diode,
It is same go out light color Organic Light Emitting Diode with the first light-emitting mode V1 and have second it is luminous In the Organic Light Emitting Diode of mode V2, the mobile default visual angle model in angular angle of squint is being faced from organic light emitting display panel In enclosing, x coordinate value of the Organic Light Emitting Diode with the first light-emitting mode V1 in CIE xyz chromaticity coordinate, which is greater than, to be had X coordinate value of the Organic Light Emitting Diode of second of light-emitting mode V2 in CIE xyz chromaticity coordinate, and/or, there is the first Y-coordinate value of the Organic Light Emitting Diode of light-emitting mode V1 in CIE xyz chromaticity coordinate, which is greater than, has second of light-emitting mode Y-coordinate value of the Organic Light Emitting Diode of V2 in CIE xyz chromaticity coordinate.
Specifically, the color of Organic Light Emitting Diode can with the variation at viewer visual angle change, color can be with It is sat in CIE (Commission Internationale de L'Eclairage, International Commission on Illumination) xyz chromaticity coordinate Scale value indicates, is generally indicated with x coordinate value and y-coordinate value.Different coordinates represents different in CIE xyz chromaticity coordinate Color.
In organic light emitting display panel provided in an embodiment of the present invention, the Organic Light Emitting Diode packet of same color is issued The Organic Light Emitting Diode of the first light-emitting mode and the Organic Light Emitting Diode of second of light-emitting mode are included, each shines Mode corresponds to a color-visual angle curve, that is to say, that and the color of two kinds of light-emitting modes is different with the variation tendency at visual angle, In default angular field of view, coordinate value of the Organic Light Emitting Diode of the first light-emitting mode in CIE xyz chromaticity coordinate begins It is greater than the coordinate value of the Organic Light Emitting Diode of second of light-emitting mode eventually, according to the biggish color of two species diversity-visual angle curve, Synthesis obtains a brightness with the slowly varying Color in visual angle-visual angle curve.To improve in default angular field of view Colour cast problem improves display effect.
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 °, in the range of 0 ° to 80 °, organic hair of the first light-emitting mode V1 The brightness of Organic Light Emitting Diode of the brightness of optical diode greater than the second light-emitting mode V2.
Specifically, the color using Organic Light Emitting Diode under positive visual angle is reference coordinate, with the variation at visual angle, color It can change, color change degree is indicated by parameter, Δ xy,With the increase at visual angle, The change curve of x and y is as shown in Fig. 2, the change curve of Δ xy is as shown in Figure 3.There is formula it is found that color is mainly by CIE X coordinate value and y-coordinate value in xyz chromaticity coordinate determine.Therefore change x coordinate value and/or y-coordinate value can change face Color.And organic light emitting display panel provided in an embodiment of the present invention, in default angular field of view, the first light-emitting mode it is organic Coordinate value of the light emitting diode in CIE xyz chromaticity coordinate is consistently greater than the Organic Light Emitting Diode of second of light-emitting mode Coordinate value, according to the biggish color of two species diversity-visual angle curve, synthesis obtains brightness synthesis slowly varying with visual angle Color-visual angle curve.To improve colour cast problem in default angular field of view, display effect is improved.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, in default angular field of view, have the A kind of x coordinate value of the Organic Light Emitting Diode of light-emitting mode is mobile in the trend risen with angular angle of squint is faced, and has the The x coordinate value of the Organic Light Emitting Diode of two kinds of light-emitting modes is mobile in downward trend with angular angle of squint is faced.Such as Fig. 4 institute Show, the x coordinate value (x1) of the Organic Light Emitting Diode with the first light-emitting mode V1 is presented with angular angle of squint movement is faced The trend risen, the x coordinate value (x2) of the Organic Light Emitting Diode with second of light-emitting mode V2 are moved with angular angle of squint is faced Dynamic is in downward trend.As shown in figure 5, Δ x1 indicates the angular with facing of the Organic Light Emitting Diode of the first light-emitting mode V1 Downward trend after first rising is presented in the mobile colour cast in angle of squint, and Δ x2 indicates the organic light-emitting diodes of second of light-emitting mode V2 Pipe with face the mobile colour cast in angular angle of squint present fall before after the trend that rises, Δ x1- Δ x2 indicates two kinds of luminous moulds After the Organic Light Emitting Diode of Formula V 1 and V2 are complementary, whole colour cast with visual angle variation.If any display it can be seen from Fig. 5 Panel only has the Organic Light Emitting Diode with the first light-emitting mode V1, presents first with the mobile colour cast in angular angle of squint is faced Downward trend after rising, colour cast is serious, only has the organic light-emitting diodes with second of light-emitting mode V2 if any display panel Pipe, with the trend risen after the mobile colour cast presentation in angular angle of squint is fallen before is faced, colour cast is equally serious.But the present invention is real In the organic light emitting display panel that example offer is provided, Organic Light Emitting Diode with the first light-emitting mode V1 and with second The Organic Light Emitting Diode of light-emitting mode V2, after the Organic Light Emitting Diode of two kinds of light-emitting modes V1 and V2 are complementary, whole colour cast It is smaller with the amplitude of variation at visual angle, therefore, organic light emitting display panel provided in an embodiment of the present invention, in default angular field of view Colour cast problem can greatly be improved, improve display effect.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, in default angular field of view, have the A kind of x coordinate value of the Organic Light Emitting Diode of light-emitting mode is mobile in the trend risen with angular angle of squint is faced, and has the The x coordinate value of the Organic Light Emitting Diode of two kinds of light-emitting modes is mobile in downward trend with angular angle of squint is faced.Principle and x Coordinate value is identical, and therefore not to repeat here.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, in default angular field of view, default In angular field of view, the x coordinate value of the Organic Light Emitting Diode with the first light-emitting mode is in angular angle of squint movement is faced The trend of rising, the x coordinate value of Organic Light Emitting Diode with second of light-emitting mode are in angular angle of squint movement is faced Downward trend.In default angular field of view, the x coordinate value of the Organic Light Emitting Diode with the first light-emitting mode is with facing Angular angle of squint is mobile in the trend risen, and the x coordinate value of the Organic Light Emitting Diode with second of light-emitting mode is with facing Mobile angular angle of squint is in downward trend.
In default angular field of view, the y-coordinate value of the Organic Light Emitting Diode with the first light-emitting mode is with positive visual angle Mobile in the trend risen to angle of squint, the y-coordinate value of the Organic Light Emitting Diode with second of light-emitting mode is with positive visual angle Mobile to angle of squint is in downward trend.
Specifically, in organic light emitting display panel provided in an embodiment of the present invention, as shown in Figure 6 and Figure 7, first is organic Light emitting diode, the second Organic Light Emitting Diode and third Organic Light Emitting Diode include 111 He of cathode being oppositely arranged Anode 112, and the organic function layer 113 being arranged between cathode 111 and anode 112;
Organic function layer 113 includes hole transmission layer 1131, electron transfer layer 1132 and is arranged in hole transmission layer Luminescent layer 1133 between 1131 and electron transfer layer 1132, hole transmission layer 1131 are in contact with anode 112, electron transfer layer 1132 are in contact with cathode 111.
Specifically, anode is generally reflection anode in bottom emitting type Organic Light Emitting Diode, with a thickness of 450~ 700nm, as shown in Figure 6 and Figure 7, wherein comprising the metallic reflector 1121 with a thickness of 80~150nm, and with a thickness of 8~ The including transparent conducting oxide layer 1122 of 20nm.The material of metallic reflector 1121 is Ag, the material of including transparent conducting oxide layer 1122 Matter is ITO (tin indium oxide) or IZO (indium zinc oxide), and the reflectivity of anode is greater than 80%;The material of cathode 111 be metal or Person's metal alloy, transmitance are 30%~70%;The thickness of hole transmission layer 1131 is greater than 60nm;The thickness of luminescent layer 1133 For 20nm~50nm;Electron transfer layer 1132 with a thickness of 20~60nm.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, organic function layer further includes being located at sky Hole injection layer between cave transport layer and anode.The thickness of hole injection layer is generally in 10nm or so.
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.
Specifically, in organic light emitting display panel provided in an embodiment of the present invention, anode in Organic Light Emitting Diode, Organic function layer and cathode constitute microcavity;The light-emitting mode of Organic Light Emitting Diode is related to wavelength, and wavelength and microcavity chamber are long With certain relationship, in turn, can be grown by adjusting microcavity chamber to change its emission wavelength.
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 each film layer in microcavity respectively, m is the series of emission mode, λmIndicate that series is m grades of hairs The wavelength of emission mode.
From above-mentioned formula it is found that the total optical path L of micro-cavity structure can be (i.e. micro- by changing the thickness d of each film layer in microcavity The chamber of chamber is long) it adjusts, and total optical path L is corresponding with the light-emitting mode m of Organic Light Emitting Diode and peak value λ m.Therefore, pass through The chamber for changing microcavity is long, and the emission wavelength of micro-cavity structure is adjusted;It can change the position of luminescent layer m, change what microcavity was adjusted Emission wavelength lambda m.
Further, for the Organic Light Emitting Diode for sending out light of the same race, the long small organic light-emitting diodes of the chamber of microcavity Pipe, the coordinate value in CIE xyz chromaticity coordinate are larger accordingly.
Therefore, optionally, in organic light emitting display panel provided in an embodiment of the present invention, the tool of same light color out Have in the Organic Light Emitting Diode of the first light-emitting mode and the Organic Light Emitting Diode with second of light-emitting mode, has the The microcavity chamber of the Organic Light Emitting Diode of two kinds of light-emitting modes is long, greater than the Organic Light Emitting Diode with the first light-emitting mode Microcavity chamber it is long.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, there is having for second of light-emitting mode The microcavity chamber of machine light emitting diode is long, and the microcavity chamber than the Organic Light Emitting Diode with the first light-emitting mode is long at least 1nm.It can guarantee in default angular field of view in this way, the Organic Light Emitting Diode of the first light-emitting mode is in CIE xyz coloration (x or y) coordinate value in coordinate is consistently greater than (x or y) coordinate value of the Organic Light Emitting Diode of second of light-emitting mode.
Specifically, can be long by adjusting the chamber of any film layer adjusting microcavity of microcavity, as long as meeting has second of hair The microcavity chamber of the Organic Light Emitting Diode of optical mode is long, greater than the microcavity of the Organic Light Emitting Diode with the first light-emitting mode Chamber is long.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, there is having for second of light-emitting mode In the cathode of machine light emitting diode, anode and organic function layer, at least thickness of a tunic layer is greater than and shines with the first The thickness of film layer with the same function in the Organic Light Emitting Diode of mode.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, there is having for second of light-emitting mode The anode of machine light emitting diode, the anode than the Organic Light Emitting Diode with the first light-emitting mode are at least 1nm thick.Have The Organic Light Emitting Diode of second of light-emitting mode is compared with the Organic Light Emitting Diode with the first light-emitting mode, in addition to sun Pole thickness is different, and the thickness of cathode is identical, and the thickness of organic function layer is identical.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, anode include metallic reflector and thoroughly Bright conductive oxide layer;
The anode of Organic Light Emitting Diode with second of light-emitting mode, with organic hair with the first light-emitting mode The anode of optical diode is compared, and metallic reflector thickness is identical, the thickness thickness at least 1nm of including transparent conducting oxide layer.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, having with the first light-emitting mode In machine light emitting diode, including transparent conducting oxide layer with a thickness of 8nm~12nm;
In Organic Light Emitting Diode with second of light-emitting mode, including transparent conducting oxide layer with a thickness of 12nm~ 20nm。
For going out the Organic Light Emitting Diode that light color is blue, in blue Organic Light Emitting Diode, metal transmitting The material of layer is Ag, with a thickness of 100nm;The material of including transparent conducting oxide layer is ITO, in having with the first light-emitting mode In machine light emitting diode including transparent conducting oxide layer with a thickness of 10nm, in the organic light-emitting diodes with second of light-emitting mode Including transparent conducting oxide layer with a thickness of 15nm in pipe;Hole injection layer with a thickness of 10nm;The thickness of first hole transmission layer For 80nm;Second hole transmission layer with a thickness of 30nm;Luminescent layer with a thickness of 30nm;Electron transfer layer with a thickness of 30nm; Cathode with a thickness of 15nm.Organic Light Emitting Diode i.e. with the first light-emitting mode and having with second light-emitting mode Machine light emitting diode is compared, and the thickness of only including transparent conducting oxide layer is not identical, and organic with the first light-emitting mode Light emitting diode is 5nm thinner than the thickness of the including transparent conducting oxide layer of the Organic Light Emitting Diode with second of light-emitting mode. The color of the light emitting diode of two kinds of light-emitting modes-visual angle curve is as shown in Figure 8.As seen from Figure 8, two kinds of light-emitting modes After the Organic Light Emitting Diode of V1 and V2 is complementary, whole colour cast Δ x1- Δ x2 is smaller with the amplitude of variation at visual angle, therefore, this hair The organic light emitting display panel that bright embodiment provides can greatly improve colour cast problem in default angular field of view, improve aobvious Show effect.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, there is having for second of light-emitting mode The organic function layer of machine light emitting diode, than there is the organic functions thickness of the Organic Light Emitting Diode of the first light-emitting mode extremely Few 1nm.Organic Light Emitting Diode i.e. with second of light-emitting mode and the organic light-emitting diodes with the first light-emitting mode Pipe is compared, and in addition to organic function layer thickness is different, anode thickness is identical, and cathode thickness is identical.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, there is having for second of light-emitting mode The organic function layer of machine light emitting diode, the organic function layer phase with the Organic Light Emitting Diode with the first light-emitting mode Than the thickness thickness at least 1nm of hole transmission layer.Organic Light Emitting Diode i.e. with second of light-emitting mode with there is the first The Organic Light Emitting Diode of light-emitting mode is compared, and in addition to organic function layer thickness is different, anode thickness is identical, cathode thickness phase Together.And the organic function layer of the i.e. Organic Light Emitting Diode with second of light-emitting mode and having with the first light-emitting mode The organic function layer of machine light emitting diode is compared, and in addition to thickness of hole transport layer is different, electron transport layer thickness is identical, is shone Thickness degree is identical.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, having with the first light-emitting mode In machine light emitting diode, hole transmission layer with a thickness of 8nm~12nm;
In Organic Light Emitting Diode with second of light-emitting mode, hole transmission layer with a thickness of 12nm~20nm.
For going out the Organic Light Emitting Diode that light color is blue, in the Organic Light Emitting Diode of blue, metal hair The material for penetrating layer is Ag, with a thickness of 100nm;The material of including transparent conducting oxide layer is ITO, with a thickness of 10nm;Hole injection layer With a thickness of 10nm;With the first light-emitting mode Organic Light Emitting Diode in the first hole transmission layer with a thickness of 80nm, with second of light-emitting mode Organic Light Emitting Diode in the first hole transmission layer with a thickness of 120nm;Second is empty Cave transport layer with a thickness of 30nm;Luminescent layer with a thickness of 30nm;Electron transfer layer with a thickness of 30nm;Cathode with a thickness of 15nm.Organic Light Emitting Diode i.e. with the first light-emitting mode and the Organic Light Emitting Diode with second of light-emitting mode It compares, the thickness of only the first hole transmission layer is not identical, and the Organic Light Emitting Diode with the first light-emitting mode is than tool There is the thin 40nm of thickness of the first hole transmission layer of the Organic Light Emitting Diode of second of light-emitting mode.Two kinds of light-emitting modes The color of light emitting diode-visual angle curve is as shown in Figure 9.As seen from Figure 9, the organic light emission of two kinds of light-emitting modes V1 and V2 After diode complementary, whole colour cast Δ x1- Δ x2 is smaller with the amplitude of variation at visual angle, therefore, provided in an embodiment of the present invention to have Machine light emitting display panel can greatly improve colour cast problem in default angular field of view, improve display effect.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, it is same go out light color have the In a kind of Organic Light Emitting Diode of light-emitting mode and the Organic Light Emitting Diode with second of light-emitting mode, have second For the anode of the Organic Light Emitting Diode of light-emitting mode in the surface roughness towards display panel light emission side, being less than has the first The anode of the Organic Light Emitting Diode of light-emitting mode is in the surface roughness towards display panel light emission side.
This is because surface roughness is bigger, scattering will be more serious, correspondingly the colour-difference under positive visual angle and angle of squint It is less unobvious.Organic Light Emitting Diode with second of light-emitting mode with face the decline of angular angle of squint moving coordinate value compared with Slowly, and the Organic Light Emitting Diode with the first light-emitting mode with face angular angle of squint moving coordinate value rise it is very fast, because This is by the anode of the Organic Light Emitting Diode with the first light-emitting mode in the surface roughness towards display panel light emission side Increase, the Organic Light Emitting Diode with the first light-emitting mode can be made to change not with angular angle of squint moving coordinate value is faced Obviously.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in Figure 6 and Figure 7, anode 112 Including metallic reflector 1121 and including transparent conducting oxide layer 1122;
As shown in fig. 6, the including transparent conducting oxide layer 1121 of the Organic Light Emitting Diode with second of light-emitting mode exists Surface towards display panel light emission side is plane;
As shown in fig. 7, the including transparent conducting oxide layer 1121 of the Organic Light Emitting Diode with the first light-emitting mode exists Surface towards display panel light emission side is male and fomale(M&F).
Specifically, organic light emitting display panel provided in an embodiment of the present invention, mainly with by change microcavity chamber it is long or Change microcavity effect technological means to obtain the Organic Light Emitting Diode with the first light-emitting mode V1 and shine with second For the Organic Light Emitting Diode of mode V2, it is certainly not limited to this.
Specifically, in organic light emitting display panel provided in an embodiment of the present invention, in order to improve colour cast problem, for same It is a kind of go out the Organic Light Emitting Diode with the first light-emitting mode V1 of light color and having with second light-emitting mode V2 Machine light emitting diode, Organic Light Emitting Diode with the first light-emitting mode V1 and organic with second light-emitting mode V2 Light emitting diode is uniformly distributed in display panel.It is illustrated below by specific embodiment.
Optionally, in display panel provided in an embodiment of the present invention, as shown in Figure 10 to Figure 12, the first organic light emission two Pole pipe 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 are arranged in array;
On line direction X, 01, second Organic Light Emitting Diode of first Organic Light Emitting Diode for setting gradually 02 and third Organic Light Emitting Diode 03 form a pixel unit 10;
On line direction X as unit of by pixel unit 10: the first organic light-emitting diodes in adjacent pixel unit 10 Pipe 10 has different light-emitting modes;And/or the second Organic Light Emitting Diode in adjacent pixel unit has different hairs Optical mode;And/or the third Organic Light Emitting Diode in adjacent pixel unit has different light-emitting modes.Wherein, Figure 10 To Figure 12, by the first Organic Light Emitting Diode tool, there are two types of be illustrated for light-emitting mode.And skilled person will appreciate that, Also the second Organic Light Emitting Diode and/or third Organic Light Emitting Diode can be arranged to two kinds of light-emitting modes, do not limited herein It is fixed.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in FIG. 13 to 15, first has Machine light emitting diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 are arranged in array;
On line direction X, 01, second Organic Light Emitting Diode of first Organic Light Emitting Diode for setting gradually 02 and third Organic Light Emitting Diode 03 form a pixel unit 10;
On line direction X as unit of by pixel unit 10: adjacent N number of pixel unit 10 is one group of repeated arrangement, Middle N is the integer greater than 1 and less than 6;The light-emitting mode having the same of N number of first Organic Light Emitting Diode 01 in a group, The first Organic Light Emitting Diode 01 in adjacent sets has different light-emitting modes;And/or N number of second organic hair in a group Optical diode light-emitting mode having the same, the second Organic Light Emitting Diode in adjacent sets have different light-emitting modes;With/ Or N number of third Organic Light Emitting Diode light-emitting mode having the same in a group, the third organic light emission two in adjacent sets Pole pipe has different light-emitting modes.Wherein, Figure 13 to Figure 15 is there are two types of light-emitting mode with the first Organic Light Emitting Diode tool Example is illustrated.And skilled person will appreciate that, it can also be by the second Organic Light Emitting Diode and/or third organic light emission two Pole pipe is arranged to two kinds of light-emitting modes, is not limited thereto.
Optionally, in display panel provided in an embodiment of the present invention, as depicted in figure 10 and figure 13, with pixel unit 10 For on the column direction Y of unit, the light-emitting mode of the Organic Light Emitting Diode of same row is identical.
Above-described embodiment is Organic Light Emitting Diode with the first light-emitting mode V1 and has second of light-emitting mode The Organic Light Emitting Diode of V2 on line direction in display panel from being uniformly distributed.It certainly, is that there is the first light-emitting mode V1 Organic Light Emitting Diode and Organic Light Emitting Diode with second of light-emitting mode V2 can also shown from column direction It is uniformly distributed in panel, it is specific as follows.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in Figure 11, Figure 14 and Figure 16, First Organic Light Emitting Diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 are arranged in array;
On line direction X, 01, second Organic Light Emitting Diode of first Organic Light Emitting Diode for setting gradually 02 and third Organic Light Emitting Diode 03 form a pixel unit 10;
On column direction Y as unit of by pixel unit 10: the first organic light-emitting diodes in adjacent pixel unit 10 There is pipe 01 the second Organic Light Emitting Diode in different light-emitting mode and/or adjacent pixel unit to have different hairs Third Organic Light Emitting Diode in optical mode and/or adjacent pixel unit has different light-emitting modes.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in Figure 12 and Figure 15, first has Machine light emitting diode 01, the second Organic Light Emitting Diode 02 and third Organic Light Emitting Diode 03 are arranged in array;
On line direction X, 01, second Organic Light Emitting Diode of first Organic Light Emitting Diode for setting gradually 02 and third Organic Light Emitting Diode 03 form a pixel unit 10;
On column direction Y as unit of by pixel unit 10: adjacent on column direction as unit of by pixel unit 10 M pixel unit 10 is one group of repeated arrangement, and wherein M is the integer greater than 1 and less than 6;M first organic hairs in a group The light-emitting mode having the same of optical diode 01, the first Organic Light Emitting Diode 01 in adjacent sets have different luminous moulds Formula;And/or M in a group the second Organic Light Emitting Diode light-emitting modes having the same, second in adjacent sets are organic Light emitting diode has different light-emitting modes;And/or M third Organic Light Emitting Diode hair having the same in a group Optical mode, the third Organic Light Emitting Diode in adjacent sets have different light-emitting modes.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in figure 16, with pixel unit 10 for unit line direction X on, it is identical with the light-emitting mode of the Organic Light Emitting Diode of a line.Wherein, Figure 16 is organic with first There are two types of be illustrated for light-emitting mode for light emitting diode tool.And skilled person will appreciate that, it can also be by second organic hair Optical diode and/or third Organic Light Emitting Diode are arranged to two kinds of light-emitting modes, are not limited thereto.
Optionally, in organic light emitting display panel provided in an embodiment of the present invention, as shown in Figure 11 to Figure 15, have the The Organic Light Emitting Diode of light-emitting mode V1 a kind of and Organic Light Emitting Diode with second of light-emitting mode V2 are from column direction It is uniformly distributed in display panel on upper and line direction.
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 17 Organic light-emitting display device structural schematic diagram, the organic light-emitting display device include above-mentioned organic light emitting display panel.It needs It is bright, although Figure 17 is with mobile phone as an example, the organic light-emitting display device is not limited to mobile phone, specifically, should 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 computer (Tablet Computer), MP4 are broadcast Put any electronic equipment having a display function such as device or television set.
A kind of organic light emitting display panel and display device provided in an embodiment of the present invention, issue the organic of same color Light emitting diode includes the Organic Light Emitting Diode of the first light-emitting mode and the organic light-emitting diodes of second of light-emitting mode Pipe, a corresponding color-visual angle curve of each light-emitting mode, that is to say, that the color of two kinds of light-emitting modes is with visual angle Variation tendency is different, and in default angular field of view, the Organic Light Emitting Diode of the first light-emitting mode is in CIE xyz chromaticity coordinate In coordinate value be consistently greater than second of light-emitting mode Organic Light Emitting Diode coordinate value, according to the biggish face of two species diversity Color-visual angle curve, synthesis obtain a brightness with the slowly varying Color in visual angle-visual angle curve.To in default view In angular region, improve colour cast problem, improves display effect.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (21)

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, x coordinate value of the Organic Light Emitting Diode with the first light-emitting mode in CIE xyz chromaticity coordinate is big In x coordinate value of the Organic Light Emitting Diode with second of light-emitting mode in CIE xyz chromaticity coordinate, and the tool Have the tendency that the x coordinate value of the Organic Light Emitting Diode of the first light-emitting mode is mobile in rising, institute with angular angle of squint is faced The x coordinate value for stating the Organic Light Emitting Diode with second of light-emitting mode moves becoming in decline with angular angle of squint is faced Gesture;And/or y-coordinate value of the Organic Light Emitting Diode with the first light-emitting mode in CIE xyz chromaticity coordinate is big In y-coordinate value of the Organic Light Emitting Diode with second of light-emitting mode in CIE xyz chromaticity coordinate;And the tool Have the tendency that the y-coordinate value of the Organic Light Emitting Diode of the first light-emitting mode is mobile in rising, institute with angular angle of squint is faced The y-coordinate value for stating the Organic Light Emitting Diode with second of light-emitting mode moves becoming in decline with angular angle of squint is faced Gesture.
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 as described in 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 as claimed in claim 3, which is characterized in that described in the Organic Light Emitting Diode Anode, organic function layer and cathode constitute microcavity;
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 microcavity chamber of the Organic Light Emitting Diode with second of light-emitting mode is long, greatly It is long in the microcavity chamber of the Organic Light Emitting Diode with the first light-emitting mode.
5. organic light emitting display panel as claimed in claim 4, which is characterized in that
The microcavity chamber of the Organic Light Emitting Diode for having second of light-emitting mode is long, has the first light-emitting mode than described Organic Light Emitting Diode the long long at least 1nm of microcavity chamber.
6. organic light emitting display panel as claimed in claim 5, which is characterized in that
In the cathode of the Organic Light Emitting Diode that there is second of light-emitting mode, anode and organic function layer, at least one The thickness of tunic layer, greater than film layer with the same function in the Organic Light Emitting Diode with the first light-emitting mode Thickness.
7. organic light emitting display panel as claimed in claim 6, which is characterized in that
The anode of the Organic Light Emitting Diode that there is second of light-emitting mode, than the having with the first light-emitting mode The anode thickness at least 1nm of machine light emitting diode.
8. organic light emitting display panel as claimed in claim 7, which is characterized in that
The anode includes metallic reflector and including transparent conducting oxide layer;
The anode of the Organic Light Emitting Diode that there is second of light-emitting mode, with the having with the first light-emitting mode The anode of machine light emitting diode is compared, and metallic reflector thickness is identical, the thickness thickness at least 1nm of including transparent conducting oxide layer.
9. organic light emitting display panel as claimed in claim 8, which is characterized in that
In the Organic Light Emitting Diode with the first light-emitting mode, the including transparent conducting oxide layer with a thickness of 8nm ~12nm;
In the Organic Light Emitting Diode that there is second of light-emitting mode, the including transparent conducting oxide layer with a thickness of 12nm ~20nm.
10. organic light emitting display panel as claimed in claim 6, which is characterized in that
The organic function layer of the Organic Light Emitting Diode for having second of light-emitting mode has the first mould that shines than described The organic functions thickness at least 1nm of the Organic Light Emitting Diode of formula.
11. organic light emitting display panel as claimed in claim 10, which is characterized in that
The organic function layer of the Organic Light Emitting Diode for having second of light-emitting mode has the first mould that shines with described The organic function layer of the Organic Light Emitting Diode of formula is compared, the thickness thickness at least 1nm of hole transmission layer.
12. organic light emitting display panel as claimed in claim 11, which is characterized in that
In the Organic Light Emitting Diode with the first light-emitting mode, the hole transmission layer with a thickness of 8nm~12nm;
In the Organic Light Emitting Diode that there is second of light-emitting mode, the hole transmission layer with a thickness of 12nm~ 20nm。
13. organic light emitting display panel as claimed in claim 3, which is characterized in that
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 anode of the Organic Light Emitting Diode with second of light-emitting mode is towards institute The surface roughness for stating display panel light emission side, less than the anode of the Organic Light Emitting Diode with the first light-emitting mode In the surface roughness towards the display panel light emission side.
14. organic light emitting display panel as claimed in claim 13, which is characterized in that
The anode includes metallic reflector and including transparent conducting oxide layer;
The including transparent conducting oxide layer of the Organic Light Emitting Diode for having second of light-emitting mode is towards the display surface The surface of plate light emission side is plane;
The including transparent conducting oxide layer of the Organic Light Emitting Diode with the first light-emitting mode is towards the display surface The surface of plate light emission side is male and fomale(M&F).
15. organic light emitting display panel as described in 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 in battle array Column 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: first Organic Light Emitting Diode in adjacent pixel unit There is different hairs with second Organic Light Emitting Diode in different light-emitting mode and/or adjacent pixel unit The third Organic Light Emitting Diode in optical mode and/or adjacent pixel unit has different light-emitting modes.
16. organic light emitting display panel as described in 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 in battle array Column 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, adjacent N number of pixel unit is one group of repeated arrangement, and wherein N is Integer greater than 1 and less than 6;N number of first Organic Light Emitting Diode light-emitting mode having the same in a group is adjacent First Organic Light Emitting Diode in group has different light-emitting modes;And/or N number of described second in a group is organic Light emitting diode light-emitting mode having the same, second Organic Light Emitting Diode in adjacent sets have different luminous moulds Formula;And/or N number of third Organic Light Emitting Diode light-emitting mode having the same in a group, it is described in adjacent sets Third Organic Light Emitting Diode has different light-emitting modes.
17. organic light emitting display panel as described in 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 in battle array Column 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 column direction as unit of by the pixel unit: first Organic Light Emitting Diode in adjacent pixel unit There is different hairs with second Organic Light Emitting Diode in different light-emitting mode and/or adjacent pixel unit The third Organic Light Emitting Diode in optical mode and/or adjacent pixel unit has different light-emitting modes.
18. organic light emitting display panel as described in 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 in battle array Column 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 column direction as unit of by the pixel unit, M adjacent pixel unit is one group of repeated arrangement, and wherein M is Integer greater than 1 and less than 6;M the first Organic Light Emitting Diode light-emitting modes having the same in a group are adjacent First Organic Light Emitting Diode in group has different light-emitting modes;And/or M a described second in a group is organic Light emitting diode light-emitting mode having the same, second Organic Light Emitting Diode in adjacent sets have different luminous moulds Formula;And/or the M in a group third Organic Light Emitting Diode light-emitting modes having the same, it is described in adjacent sets Third Organic Light Emitting Diode has different light-emitting modes.
19. the organic light emitting display panel as described in claim 15 or 16, which is characterized in that
On column direction as unit of by the pixel unit, the light-emitting mode of the Organic Light Emitting Diode of same row is identical.
20. the organic light emitting display panel as described in claim 17 or 18, which is characterized in that
It is identical with the light-emitting mode of the Organic Light Emitting Diode of a line on line direction as unit of by the pixel unit.
21. 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 1~20 Light display panel.
CN201711174191.3A 2017-11-22 2017-11-22 Organic light emitting display panel and display device Active CN107845669B (en)

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