CN108550713A - Organic light emitting display panel and its display device - Google Patents
Organic light emitting display panel and its display device Download PDFInfo
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- CN108550713A CN108550713A CN201810403209.0A CN201810403209A CN108550713A CN 108550713 A CN108550713 A CN 108550713A CN 201810403209 A CN201810403209 A CN 201810403209A CN 108550713 A CN108550713 A CN 108550713A
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- 239000010410 layer Substances 0.000 claims description 132
- 239000000463 material Substances 0.000 claims description 40
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 15
- 229910052709 silver Inorganic materials 0.000 claims description 15
- 239000004332 silver Substances 0.000 claims description 15
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052772 Samarium Inorganic materials 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 4
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052775 Thulium Inorganic materials 0.000 claims description 3
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical group [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 208000004350 Strabismus Diseases 0.000 abstract description 22
- 230000000007 visual effect Effects 0.000 abstract description 21
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000004020 luminiscence type Methods 0.000 description 13
- 239000000758 substrate Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 239000010408 film Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical group 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 229910000821 Yb alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A kind of organic light emitting display panel of offer of the embodiment of the present invention and its display device, are related to display technology field, for improving the visual angle colour cast under angle of squint.Organic light emitting display panel includes pixel defining layer, and the pixel defining layer is equipped with the multiple open regions being arranged in array, and the spacer region between the two neighboring open region；A plurality of light-emitting elements, at least one light-emitting component are located in an open region of the pixel defining layer；Cathode layer and anode layer, the light-emitting component is between the cathode layer and the anode layer；Wherein, the cathode layer includes the second area of the first area of the open region of the corresponding pixel defining layer and the spacer region of the corresponding pixel defining layer, on the direction perpendicular to the organic light emitting display panel surface, the thickness of the second area of the cathode layer is more than the thickness of the first area.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 display device.
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.
Colour cast under visual angle colour cast, especially angle of squint generally existing and urgently to be resolved hurrily is asked in OLED display device
Topic.
Invention content
In view of this, a kind of organic light emitting display panel of offer of the embodiment of the present invention and its display device, for improving tiltedly
Visual angle colour cast under visual angle.
In a first aspect, the present invention provides a kind of organic light emitting display panel, which includes：
Pixel defining layer, the pixel defining layer are equipped with the multiple open regions being arranged in array, and positioned at two neighboring
Spacer region between the open region；
A plurality of light-emitting elements, at least one light-emitting component are located at an open region of the pixel defining layer
It is interior；
Cathode layer and anode layer, the light-emitting component is between the cathode layer and the anode layer；Wherein,
The cathode layer includes the first area of the open region of the corresponding pixel defining layer and the corresponding pixel
The second area of the spacer region of definition layer, on the direction perpendicular to the organic light emitting display panel surface, described the moon
The thickness of the second area of pole layer is more than the thickness of the first area.
Optionally, on the anode layer to the direction of the cathode layer, the first area and the second area are equal
It is single layer structure.
Optionally, the thickness of the first area is H1, wherein 7nm<H1<20nm.
Optionally, on the anode layer to the direction of the cathode layer, the thickness of the first area and described second
The thickness difference in region is D, wherein 30nm≤D≤100nm.
Optionally, the material of the first area is identical with the material of the second area.
Optionally, the material of the first area and the material of the second area be metallic silver or for metallic silver and
The alloy of magnesium metal.
Optionally, on the anode layer to the direction of the cathode layer, the first area and the second area are equal
Including first layer, the first area further includes the second layer, and the second layer is arranged in the first layer close to the anode layer
A side surface.
Optionally, the material of the first layer is identical with the material of the second layer.
Optionally, the material of the first layer is magnesium silver alloy or metallic silver, and the material of the second layer is rare earth gold
Belong to element.
Optionally, the material of the second layer is metallic ytterbium or samarium metal.
Optionally, on the direction of the organic light emitting display panel, the second area and firstth area
The side in the region that domain connects is an inclined-plane；
Wherein, the inclined-plane in orthographic projection and the first area in the organic light emitting display panel in institute
It is α to state the angle between the orthographic projection in organic light emitting display panel, 90 °≤α≤180 °.
Second aspect, the present invention provide a kind of display device, which includes having of being related to of above-mentioned first aspect
Machine light emitting display panel.
Any technical solution in above-mentioned technical proposal has the advantages that：
This programme, since thicknesses of layers is related to the proportional example of the wavelength for going out light color, perpendicular to organic light emission
On the direction of display panel, after the thickness of cathode layer second area is more than the thickness of first area, projected under angle of squint
The color wavelength of light is deviated towards long wavelength side, i.e., the wavelength for going out light color under angle of squint is equal or close under positive visual angle
Go out the intrinsic peak of light color so that the light color that goes out obtained under angle of squint goes out light color close under positive visual angle, improves strabismus
Visual angle colour cast situation under angle, provides display quality.
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；
The principle schematic 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；
Sectional view in Fig. 3 that Fig. 4 is provided by the embodiment of the present invention at the positions AA '；
Another structural schematic diagram for the organic light emitting display panel that Fig. 5 is provided by the embodiment of the present invention；
Sectional view in Fig. 5 that Fig. 6 is provided by the embodiment of the present invention at the positions DD '；
Another structural schematic diagram for the organic light emitting display panel that Fig. 7 is provided by the embodiment of the present invention；
Sectional view in Fig. 7 that Fig. 8 is provided by the embodiment of the present invention at the positions BB '；
Another structural schematic diagram for the organic light emitting display panel that Fig. 9 is provided by the embodiment of the present invention；
Sectional view in Fig. 9 that Figure 10 is provided by the embodiment of the present invention at the positions CC '；
The structural schematic diagram for the 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 creative efforts, 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 region, but these may be described using term first, second etc.
Region should not necessarily be limited by these terms.These terms are only used for region being distinguished from each other out.For example, not departing from the embodiment of the present invention
In the case of range, first area can also be referred to as second area, and similarly, second area can also be referred to as the firstth area
Domain.
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：
For organic light emitting display panel, for realizing touch function by the way of externally embedded type (on cell),
As shown in Figure 1, a kind of structural schematic diagram of its organic light emitting display panel provided by the embodiment of the present invention, organic light emission is aobvious
Show that panel 100 includes first substrate 41, a plurality of light-emitting elements 15 on 41 1 side surface of first substrate are set, organic light emission is aobvious
Show that panel 100 includes the first substrate 41 that is oppositely arranged and thin-film encapsulation layer 42, first substrate 41 and thin-film encapsulation layer 42 it
Between be provided with thin film transistor (TFT) 5, light-emitting component 15 and pixel defining layer 11.Thin film transistor (TFT) 5 specifically includes active layer 51, grid
52, source electrode 53 and drain electrode 54, light-emitting component 15 specifically include the corresponding to anode block 171, luminescence unit 151 and cathode layer 13
One region 131.Wherein, the open region 111 of the 151 respective pixel definition layer 11 of luminescence unit of light-emitting component 15.Anode layer 17 wraps
Include multiple anode blocks 171.
It is understood that the first substrate 41 in the present embodiment can be flexible base board, corresponding organic light emitting display face
Plate 100 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, fits
For various display equipment, it is particularly suitable in wearable display equipment.Optionally, the material of flexible base board be polyester-imide or
Polyethylene terephthalate's resin.In addition, first substrate 41 can also be rigid substrates, corresponding organic light emitting display panel
100 be rigid organic light emitting display panel.In fact, the present embodiment does not do special limit to the material of organic light emitting display panel
It is fixed.
In the present embodiment, positive voltage can be applied to anode layer 17 during electroluminescent.Anode layer in the present embodiment
17 material can be tin indium oxide.Specifically, anode layer 17 includes at least reflective membrane, reflective membrane can be located at anode layer 17 and carry on the back
From on a side surface of first substrate 41, the material of reflective membrane can be silver.Anode layer 17 may also include transparent conductive film, position
Deviate from a side surface of first substrate 41 in reflective membrane, 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 layer 13 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 100 m kinds to go out light color, m is more than or equal to 3
Integer, exemplary implementation may include that three kinds go out light color, respectively red, green and blue, each light-emitting component 15 is right
One kind is answered to go out 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. 2, the principle schematic of its organic light emitting display panel provided by the embodiment of the present invention, corresponding to appoint
It anticipates for a light-emitting component 15, applies positive voltage to anode layer 17, apply negative voltage to cathode layer 13, what anode layer 17 generated
Hole is injected into corresponding luminescence unit 151, the electron injection that cathode layer 13 generates to corresponding luminescence unit
In 151, electrons and holes occur compound and generate exciton, and sharp radiation transistion makes organic light emitting display panel shine.
With continued reference to Fig. 1, the organic light emitting display panel 100 in this example can be regarded as top emitting organic light emitting display face
Plate, that is to say, that anode layer 17 can be regarded as total reflection anode, and cathode layer 13 can be regarded as semitransparent cathode, and cathode setting exists
Side far from first substrate 41.It is totally reflected anode and constitutes microcavity (resonant cavity) with semitransparent cathode, when microcavity chamber is long and light wave
When wavelength meets certain relationship, the light of specific wavelength (a certain monochromatic wavelength) can be strengthened, and spectrum narrows, hair
Raw microcavity effect.Microcavity effect has the effects that selection to light source, narrows and reinforce, and is often used to improve the coloration of device, add
The emissive porwer of strong specific wavelength 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 angle of squint, 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, and as shown in Figure 3 and Figure 4, Fig. 3 is carried by the embodiment of the present invention
Another structural schematic diagram of the organic light emitting display panel of confession, wherein in order to clearly indicate cathode layer 13 and light-emitting component
Film layer relationship between 15, therefore it is translucent to indicate that the pattern of cathode layer 13 has been arranged to, Fig. 4 is provided by the embodiment of the present invention
Fig. 3 in sectional view at the positions AA '.As shown in figure 4, the organic light emitting display panel 100 includes pixel defining layer 11, pixel
Definition layer 11 is equipped with the multiple open regions 111 being arranged in array, and the spacer region between two neighboring open region 111
113, the pixel defining layer 11 in the present embodiment defines the opening area of light-emitting component 15, that is to say, that light-emitting component 15
Maximum open area is identical as the area of open region 111 of pixel defining layer 11, and certainly, the opening area of light-emitting component 15 also may be used
It less than the opening area of the open region 111 of pixel defining layer 11, in this implementation and is not limited thereof, the relationship of the two can root
Depending on specific product.
With continued reference to Fig. 3 and Fig. 4, which further includes a plurality of light-emitting elements 15, wherein at least
One light-emitting component 15 is located in an open region 111 of pixel defining layer 11.The organic light emitting display panel 100 further includes the moon
Pole layer 13 and anode layer 17, light-emitting component 15 is between cathode layer 13 and anode layer 17.
In the present embodiment, on the basis of orientation shown in Fig. 4, each light-emitting component 15 includes anode block 171, luminescence unit
151 and corresponding it is arranged in the first area of cathode layer 13 131, wherein positive throwing of the first area 131 in first substrate 41
The orthographic projection of orthographic projection and anode block 171 in first substrate 41 of shadow, luminescence unit 151 in first substrate 41 have it is overlapping,
Even it is overlapped.And multiple anode blocks 171 constitute anode layer 17.
As shown in Figure 3 and Figure 4, cathode layer 13 includes 131 He of first area of the open region 111 of respective pixel definition layer 11
The second area 133 of the spacer region 113 of respective pixel definition layer 11, on the direction of organic light emitting display panel 100,
The thickness of the first area 131 of cathode layer 13 is H1, and the thickness of the second area 133 of cathode layer 13 is H2, wherein second area
133 thickness is more than the thickness of first area 131, i.e. H2>H1.
In the prior art, due in the case of increasing hole angle visual angle, resonant wavelength with visual angle increase and to shorter wavelength side
It deviates (blue shift), from the color under the color and positive visual angle for the light that organic light emitting display panel projects, there are deviations as a result, i.e., can
Cause colour cast.
It is understood that angle when eyes screen vertical, can be regarded as facing angle, angle is set as 0 ° at this time,
By taking screen direction as an example, eyes look squarely screen, then are regarded as eyes and screen vertical, and visual angle at this time is 0 °；Strabismus
Angle refers to an angle value more than 0 ° and less than 90 °, and the angle value is absolute figure, for example, eyes are tilted to the right
45 °, 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 °.Due to thicknesses of layers and light extraction
The proportional example of the wavelength of color is related, therefore, on the direction of organic light emitting display panel 100, when cathode layer 13 the
After the thickness in two regions 133 is more than the thickness of first area 131, the color wavelength of the light projected under angle of squint is towards long wavelength
Side deviates, i.e., the wavelength for going out light color under angle of squint is equal or close to the intrinsic peak for going out light color under positive visual angle so that
The light color that goes out obtained under angle of squint goes out light color close under positive visual angle, improves the visual angle colour cast situation under angle of squint, carries
Display quality is supplied.
You need to add is that as an example, as shown in Figure 3 and Figure 4, first area 131 can be a pair of with luminescence unit 151 1
It should be arranged；Also can be as shown in Figure 5 and Figure 6, the another of the organic light emitting display panel that Fig. 5 is provided by the embodiment of the present invention is tied
Structure schematic diagram, for film layer relationship is clearly shown, therefore cathode layer 13 is set as translucent, Fig. 6 is institute of the embodiment of the present invention
Sectional view in Fig. 5 of offer at the positions DD ', first area 131 can be corresponding with multiple luminescence units 151, illustratively such as
Shown in Fig. 5 and Fig. 6, a first area 131 is corresponding with upper luminescence unit 151.But in fact, first area 131 and hair
The correspondence of light unit 151 can not carry out specific restriction in the present embodiment depending on specific product to it.
Inevitable, the region of first area 131 is limited by open region 111, when a first area 131 correspond to it is multiple
After luminescence unit 151, the opening of open region 111 can also become larger accordingly.
Further, with continued reference to Fig. 4 and Fig. 6, on anode layer 17 to the direction of cathode layer 13 (as shown by arrows in figure
Direction), first area 131 and second area 133 are single layer structure.It can be appreciated that first area 131 and the secondth area
Domain 133 removes thickness difference, other all sames, such as the material of the two is identical, sheet resistance is identical, and preparation process is identical etc.,
While improving angle of squint colour cast, simplify preparation flow, saves cost.
Further, the thickness of first area 131 is H1 in the present embodiment, wherein 7nm<H1<20nm.With top emitting
For micro-cavity structure, cathode is semi-transparent configuration, at this point, the thickness of first area 131 is too big, after 20nm, then influences
Light rate；If the thickness of first area 131 is too small, less than after 7nm, then microcavity effect is decreased obviously, and is also unfavorable for the injection of light.
In practice, multiple repetition test obtains inventor, the thickness difference between first area 131 and second area 133,
I.e. on anode layer 17 to the direction of cathode layer 13, it is D that the thickness of first area 131 is differed with the thickness of second area 133,
In, 30nm≤D≤100nm.After the thickness of second area 133 is more than 100nm with the thickness difference of first area 131, due to
The thickness of second area 133 is thicker, then the offset of wavelength towards the long wavelength side of the light projected under angle of squint is larger, it is also possible to
There can be colour cast；After the thickness difference of the two is less than 30nm, 133 increased thickness of second area, which is not enough to make up visual angle, to be caused
Colour cast, therefore be also unfavorable for the elimination of colour cast.
In one embodiment, the material of first area 131 is identical with the material of second area 133.The material of the two
It is identical, so as to prepare simultaneously, simplify preparation flow, saves cost.
Further, the material of first area 131 and the material of second area 133 can be metallic silver or be metallic silver
With the alloy of magnesium metal.In the present embodiment, the work function of metallic silver or the alloy of metallic silver and magnesium metal is relatively low, is conducive to
The electron transition that cathode generates improves the recombination rate of electrons and holes to luminescence unit, improves light extraction efficiency.And the two
Electric conductivity it is also fine, it is cheap, be conducive to save cost.
In one embodiment, as shown in Figure 7 and Figure 8, the organic light emitting display that Fig. 7 is provided by the embodiment of the present invention
Another structural schematic diagram of panel, the sectional view in Fig. 7 that Fig. 8 is provided by the embodiment of the present invention at the positions BB ', in anode
On layer 17 to the direction of cathode layer 13 (as shown by the arrows in figure 8), first area 131 and second area 133 include first layer
1301, first area 131 further includes the second layer 1302, and the second layer 1302 is arranged in first layer 1301 close to the side of anode layer 17
Surface.
As shown in figure 8, first area 131 includes first layer 1301 and the second layer 1302, two different film layers, close to hair
The second layer 1302 of 151 side of light unit can be prepared into low work function film layer, and to the injection conducive to electronics, first layer 1301 can be made
It is standby at the preferable film layer of conductivity, to the transmission conducive to electronics.
Certainly, in conjunction with the above embodiment it is found that the integral thickness of first area 131 is less than the entirety of second area 132
Thickness, when light is projected from angle of squint or angle of squint, since second area 133 is male structure, 133 thickness of second area
Degree becomes larger, and the wavelength of the light of injection is deviated towards long wavelength side, so that it is more nearly intrinsic peak, be can obviously improve under the visual angle
Colour cast.
Further, the material of first layer 1301 and the material of the second layer 1302 can be identical or different.A kind of specific
Embodiment in, the material of first layer 1301 is identical with the material of the second layer 1302, and illustratively, the material of the two can be
Metallic silver or magnesium metal silver alloy.The work function of the alloy of metallic silver or metallic silver and magnesium metal is relatively low, is conducive to the moon
The electron transition that pole generates improves the recombination rate of electrons and holes to luminescence unit, improves light extraction efficiency.And the two
Electric conductivity is also fine, cheap, is conducive to save cost.
In another specific embodiment, the material of first layer 1301 can be magnesium silver alloy or metallic silver, second
The material of layer 1302 is thulium.The work function smaller of thulium is conducive to the injection of electronics.
Further, the material of the second layer 1302 is metallic ytterbium or samarium metal.The work function of metallic ytterbium or samarium metal
It is smaller, it is conducive in electron transition to corresponding luminescence unit, improves injection efficiency.
In one embodiment, as shown in Figure 9 and Figure 10, the organic light emission that Fig. 9 is provided by the embodiment of the present invention is aobvious
Show another structural schematic diagram of panel, the sectional view in Fig. 9 that Figure 10 is provided by the embodiment of the present invention at the positions CC ',
On the direction of organic light emitting display panel 100, the side in the region that second area 133 connects with first area 131 is
One inclined-plane 135；Wherein, inclined-plane 135 is having in the orthographic projection in organic light emitting display panel 100 with first area 131
The angle between orthographic projection on machine light emitting display panel 100 is α, wherein 90 °≤α≤180 °.In the present embodiment, by first
The side in the region that region 131 and second area 133 connect is arranged to an inclined-plane, on the one hand, is conducive to the preparation of this film layer so that
The thickness uniformity of each position of this film layer；On the other hand, on the direction of organic light emitting display panel 100,
Conducive to the preparation for the film layer for being deposited on this film layer so that be deposited on the thicknesses of layers uniformity of this film layer.
The present embodiment provides a kind of display devices, as shown in figure 11, the display device provided by the embodiment of the present invention
Structural schematic diagram, which includes the organic light emitting display panel 100 that is related to of the present embodiment.It needs to illustrate
Be, although Figure 11 with mobile phone as an example, the display device is not limited to mobile phone, specifically, the display device can be with
Including but not limited to personal computer (Personal Computer, PC), personal digital assistant (Personal Digital
Assistant, PDA), radio hand-held equipment, tablet computer (Tablet Computer), MP4 players or television set etc. it is any
Electronic equipment with display function.
In the present embodiment, since display device 500 includes organic light emitting display panel 100, it includes organic light emissions
All technical characteristics of display panel 100, that is, since thicknesses of layers is related to the proportional example of the wavelength for going out light color,
On the direction of organic light emitting display panel 100, when the thickness of 13 second area 133 of cathode layer is more than first area 131
Thickness after, the color wavelength of the light projected under angle of squint deviates towards long wavelength side, i.e., goes out light color under angle of squint
Wavelength is equal or close to the intrinsic peak for going out light color under positive visual angle so that is obtained under angle of squint goes out light color close to facing
Go out light color under angle, improves the visual angle colour cast situation under angle of squint, provide display quality.
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 (12)
1. a kind of organic light emitting display panel, which is characterized in that including：
Pixel defining layer, the pixel defining layer are equipped with the multiple open regions being arranged in array, and positioned at two neighboring described
Spacer region between open region；
A plurality of light-emitting elements, at least one light-emitting component are located in an open region of the pixel defining layer；
Cathode layer and anode layer, the light-emitting component is between the cathode layer and the anode layer；Wherein,
The cathode layer includes the first area of the open region of the corresponding pixel defining layer and the corresponding pixel definition
The second area of the spacer region of layer, on the direction perpendicular to the organic light emitting display panel surface, the cathode layer
The second area thickness be more than the first area thickness.
2. organic light emitting display panel according to claim 1, which is characterized in that
On the anode layer to the direction of the cathode layer, the first area and the second area are single layer knot
Structure.
3. display panel as claimed in claim 2, which is characterized in that the thickness of the first area is H1, wherein 7nm<H1
<20nm。
4. organic light emitting display panel according to claim 2, which is characterized in that
On the anode layer to the direction of the cathode layer, the thickness phase of the thickness of the first area and the second area
Difference is D, wherein 30nm≤D≤100nm.
5. organic light emitting display panel according to claim 2, which is characterized in that
The material of the first area is identical with the material of the second area.
6. organic light emitting display panel according to claim 5, which is characterized in that
The material of the first area and the material of the second area are metallic silver or the conjunction for metallic silver and magnesium metal
Gold.
7. organic light emitting display panel according to claim 1, which is characterized in that
On the anode layer to the direction of the cathode layer, the first area and the second area include first layer,
The first area further includes the second layer, and the side surface close to the anode layer in the first layer is arranged in the second layer.
8. organic light emitting display panel according to claim 7, which is characterized in that
The material of the first layer is identical with the material of the second layer.
9. organic light emitting display panel according to claim 7, which is characterized in that
The material of the first layer is magnesium silver alloy or metallic silver, and the material of the second layer is thulium.
10. organic light emitting display panel according to claim 9, which is characterized in that the material of the second layer is metal
Ytterbium or samarium metal.
11. organic light emitting display panel according to claim 1, which is characterized in that
In the region that on the direction of the organic light emitting display panel, the second area connects with the first area
Side be an inclined-plane；
Wherein, the inclined-plane has with the first area described in the orthographic projection in the organic light emitting display panel
The angle between orthographic projection on machine light emitting display panel is α, 90 °≤α≤180 °.
12. a kind of display device, which is characterized in that include the display panel as described in any one of claim 1 to 11.
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| CN110148612A (en) * | 2019-04-29 | 2019-08-20 | 武汉华星光电半导体显示技术有限公司 | Organic LED display panel and preparation method thereof |
| CN110581229A (en) * | 2019-09-11 | 2019-12-17 | 云谷（固安）科技有限公司 | display panel, display device and preparation method of display panel |
| WO2021036205A1 (en) * | 2019-08-29 | 2021-03-04 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method therefor |
| CN113299859A (en) * | 2021-05-24 | 2021-08-24 | 合肥维信诺科技有限公司 | Display panel, display panel preparation method and display device |
| CN113328048A (en) * | 2020-02-28 | 2021-08-31 | 昆山国显光电有限公司 | Display panel, display device, mask and manufacturing method of display panel |
| WO2023137796A1 (en) * | 2022-01-24 | 2023-07-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
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| CN110581229A (en) * | 2019-09-11 | 2019-12-17 | 云谷（固安）科技有限公司 | display panel, display device and preparation method of display panel |
| CN113328048A (en) * | 2020-02-28 | 2021-08-31 | 昆山国显光电有限公司 | Display panel, display device, mask and manufacturing method of display panel |
| CN113328048B (en) * | 2020-02-28 | 2022-09-06 | 昆山国显光电有限公司 | Display panel, display device, mask and manufacturing method of display panel |
| CN113299859A (en) * | 2021-05-24 | 2021-08-24 | 合肥维信诺科技有限公司 | Display panel, display panel preparation method and display device |
| WO2023137796A1 (en) * | 2022-01-24 | 2023-07-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
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| CN108550713B (en) | 2020-03-13 |
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