CN104733632B - Organic light-emitting display device and its manufacture method - Google Patents
Organic light-emitting display device and its manufacture method Download PDFInfo
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- CN104733632B CN104733632B CN201310698245.1A CN201310698245A CN104733632B CN 104733632 B CN104733632 B CN 104733632B CN 201310698245 A CN201310698245 A CN 201310698245A CN 104733632 B CN104733632 B CN 104733632B
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Abstract
The present invention discloses a kind of organic light-emitting display device and its manufacture method, the organic light-emitting display device includes planarization layer and organic illuminating element, the first surface of planarization layer includes flat site and the uneven region being connected with flat site, and flat site is set with uneven region alternate intervals；Organic illuminating element includes organic luminous layer and reflecting layer, and organic luminous layer and reflective layer are stacked on uneven region, and reflecting layer corresponds to the part formation in uneven region and the shape identical diffusing reflection portion in uneven region.The organic illuminating element of above-mentioned organic light-emitting display device is formed with shape identical reflecting layer on uneven region, effectively controls mirror-reflection；Also, the shape in reflecting layer be also with rough shape, increase light-emitting area, improve unit area luminous efficiency；Further, since the reflecting layer can effectively control mirror-reflection, then rotatory polarization piece can be omitted or reduced, substantially increase light extraction efficiency.
Description
【Technical field】
The present invention relates to a kind of display device and its manufacture method, more particularly to a kind of organic light-emitting display device and its
Manufacture method.
【Background technology】
Organic light emitting display（OLED）It is a kind of active luminescent device.It is compared to present main flow flat panel display
Thin Film Transistor-LCD（TFT-LCD), organic light emitting display has a high-contrast, wide viewing angle, low-power consumption, gentlier
Thin the advantages of, and can be used to make flexible display screen, transparent display screen etc., under being expected to turn into after the liquid crystal display device
Generation flat panel display, is most technologies that attract attention in current flat panel display.
Because organic light-emitting display device is selfluminous element, it will usually by two electrodes of organic light-emitting display device
One of electrode as reflecting electrode, to improve light utilization efficiency.For example, Fig. 1 is traditional organic light-emitting display device 10
The structural representation of single pixel.Fig. 1 is referred to, underlay substrate 11 can be thought glass, plastics etc., and planarization layer 12 is located at lining
On substrate 11.The lower section of planarization layer 12 is drive circuit, and contact hole is provided with planarization layer 12.Reflecting electrode 13 is plane
Structure, and be connected with the drive circuit of lower section by contact hole, provide signal by drive circuit.
The reflecting electrode 13 is typically fabricated on planarization layer 12, is shown to organic light emission when there is very strong ambient light incident
During showing device, the reflecting electrode 13 can occur mirror-reflection, deteriorate display effect.In order to improve this shortcoming, organic light emission
The surface of display device can attach a rotatory polarization piece.As shown in Fig. 2 the rotatory polarization piece is constituted including two parts, it is respectively that line is inclined
Light part 30 and quarter-wave plate 20.Its operation principle is that ambient light turns into line polarisation by line polarisation part 30 first, then
By turning into circularly polarized light after quarter-wave plate 20；The circularly polarized light again passes by four by the reflection of reflecting electrode 13/
It is changed into linearly polarized light again after one wave plate 20, but the polarization direction of the linearly polarized light there occurs 90 degree of rotations, just by line polarisation portion
30 are divided to block and cannot transmit.Therefore, the reflection of the light to external world of reflecting electrode 13 is avoided on whole structure.However, because four
/ mono- wave plate 20 and wavelength strong correlation, the effect to other wavelength will weaken, therefore not be to some wavelength effectively
Absolutely effectively.Meanwhile, because the presence of the rotatory polarization piece, the light that organic light-emitting display device sends also at least half with
On be blocked, greatly reduce the light extraction efficiency of organic light-emitting display device.
Therefore, there is one in the negative electrode and anode of traditional OLED for reflective electrode, reflection-type electricity
Ambient light is reflected in pole, causes contrast to decline, and has a strong impact on display quality.Also, traditional solution is to attach rotatory polarization
Piece, but greatly reduce light extraction efficiency.
【The content of the invention】
In view of above-mentioned condition, it is necessary to provide a kind of mirror-reflection for reducing electrode, while improving having for luminous efficiency again
Machine luminous display unit and its manufacture method.
A kind of organic light-emitting display device, including：
The planarization layer of the second surface being oppositely arranged with first surface and with the first surface, the first surface
The uneven region being connected including flat site and with the flat site, the flat site and the uneven region
Alternate intervals are set；And
It is described to have on the planarization layer and the organic illuminating element that sets of the correspondence uneven region
Machine light-emitting component includes organic luminous layer and reflecting layer, the organic luminous layer and the reflective layer be stacked in it is described it is concavo-convex not
On flat region, and the reflecting layer corresponds to the part formation in the uneven region and the shape in the uneven region
Identical diffusing reflection portion；
Wherein, the diffusing reflection portion carries out diffusing reflection to the light that the organic luminous layer is launched.
The planarization layer of above-mentioned organic light-emitting display device is provided with uneven region, and organic illuminating element is uneven
Shape identical reflecting layer is formed with region, so that the reflecting layer can carry out diffusing reflection, mirror-reflection is effectively controlled；And
And, the shape in reflecting layer be also with rough shape, increase light-emitting area, improve unit area luminous efficiency；Separately
Outward, because the reflecting layer can effectively control mirror-reflection, then rotatory polarization piece can be omitted or is reduced, substantially increase light extraction efficiency.
Wherein in one embodiment, the uneven region is arc convex, and the diffusing reflection portion is described for correspondence
The globoidal structure of the evagination of arc convex.
Wherein in one embodiment, the organic illuminating element is multiple, and each described organic illuminating element is corresponding
The arc convex for multiple, and multiple arc convex continuously set or interval setting；
Or, the organic illuminating element is multiple, each one described arc convex of the organic illuminating element correspondence；
The multiple organic illuminating element can send feux rouges, blue and green light respectively, and the different sub-pixel of three kinds of colors is formed respectively, and
And the radian of the arc convex of the different sub-pixel of three kinds of different colours is different；The different son of every three colors
Pixel constitutes a dot structure.
Wherein in one embodiment, the periphery of the arc convex is circular or square.
Wherein in one embodiment, also including separation layer, the separation layer is formed on the first surface, and is set
There is the opening for exposing the organic illuminating element, the opening correspondence uneven region is set.
Wherein in one embodiment, the reflecting layer is pixel electrode layer, and the organic illuminating element also includes common-battery
Pole layer；The pixel electrode layer is covered on the uneven region, and the organic luminous layer is covered in the pixel electrode
On layer and the separation layer, the common electrode layer is made up of semi-transparent conductive material, and is covered on the organic luminous layer；
Or, the reflecting layer is common electrode layer, and the organic illuminating element also includes pixel electrode layer；The pixel electricity
Pole layer is made up of transparent conductive material, and is covered on the uneven region, and the organic luminous layer is covered in described
On pixel electrode layer and the separation layer, the common electrode layer is covered on the organic luminous layer.
Wherein in one embodiment, also including film crystal diode and underlay substrate, the thin film diode is located at
On the underlay substrate, and including gate electrode, source electrode and drain electrode, the second surface of the planarization layer is covered in
On the thin film diode, and with the exposed contact hole of the drain electrode is made, the pixel electrode layer is by the contact
Hole electrically connects with the drain electrode.
A kind of manufacture method of organic light-emitting display device, it comprises the following steps：
One layer of planarization layer of shaping, the planarization layer has first surface and be oppositely arranged with the first surface the
Two surfaces, and flat site and the uneven region being connected with the flat site are formed in the first surface, it is described
Flat site is set with the uneven region alternate intervals；
Form organic illuminating element on the uneven region, the organic illuminating element include organic luminous layer and
Reflecting layer, the organic luminous layer and the reflective layer are stacked on the uneven region, and reflecting layer correspondence
The part in the uneven region forms the shape identical diffusing reflection portion with the uneven region.
It is described in the uneven region if the reflecting layer is pixel electrode layer wherein in one embodiment
The step of upper formation organic illuminating element, further includes：
Mask exposure is molded one layer of separation layer on the first surface, is formed with the separation layer concavo-convex with described
The opening that uneven region is correspondingly arranged, the opening is used to expose the organic illuminating element；
One layer of reflective conductive material is deposited on the uneven region, to form the pixel electrode layer；
Luminous organic material is deposited with the pixel electrode layer, or the pixel electrode layer and the separation layer, with
Form the organic luminous layer；
One layer of semi-transparent conductive material is deposited with the organic luminous layer, to form common electrode layer.
It is described on the uneven region if the reflecting layer is common electrode layer wherein in one embodiment
The step of forming organic illuminating element further includes：
Mask exposure is molded one layer of separation layer on the first surface, is formed with the separation layer concavo-convex with described
The opening that uneven region is correspondingly arranged, the opening is used to expose the organic illuminating element；
Layer of transparent conductive material is deposited on the uneven region, to form pixel electrode layer；
Luminous organic material is deposited with the pixel electrode layer, or the pixel electrode layer and the separation layer, with
Form the organic luminous layer；
One layer of reflective conductive material is deposited with the organic luminous layer, to form the common electrode layer.
The preparation method of above-mentioned organic light-emitting display device is molded the planarization layer with uneven region in advance, by this
The uneven region of hardware and software platform layer as reflecting layer forming panel, and without individually independent mask plate or mould,
Therefore, the preparation method of above-mentioned organic light-emitting display device is simple to manufacture, facilitates, and cost is relatively low.
【Brief description of the drawings】
Fig. 1 is the structural representation of the single pixel of traditional organic light-emitting display device；
Fig. 2 is principle of reflection schematic diagram of traditional organic light-emitting display device using rotatory polarization piece；
Fig. 3 is the profile of the single sub-pixel structure of the organic light-emitting display device of embodiments of the present invention one；
Fig. 4 is the profile of the red color organic light emitting element of the organic light-emitting display device shown in Fig. 3；
Fig. 5 is the profile of the blue organic illuminating element of the organic light-emitting display device shown in Fig. 3；
Fig. 6 is the profile of the green organic illuminating element of the organic light-emitting display device shown in Fig. 3；
Fig. 7 is the top view of the organic light-emitting display device shown in Fig. 3；
Fig. 8 is the profile of the single sub-pixel structure of the organic light-emitting display device of embodiments of the present invention two；
Fig. 9 is the flow chart of the manufacture method of the organic light-emitting display device of embodiment of the present invention.
【Specific embodiment】
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give preferred embodiment of the invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Conversely, when element be referred to as " directly existing " another element " on " when,
Do not exist intermediary element then.Term as used herein " vertical ", " level ", "left", "right" and similar statement are only
It is for illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
Refer to Fig. 3, the organic light-emitting display device 100 of one embodiment of the present invention, including it is underlay substrate 110, flat
Smoothization layer 120 and organic illuminating element 130.
The dielectric substrate that underlay substrate 110 can be made up of glass, quartz, ceramics or plastics is formed.However, the present invention is not
It is limited to this, for example, the metallic substrates that underlay substrate 110 can be made of stainless steel are formed.
Planarization layer 120 is located on underlay substrate 110.Planarization layer 120 has first surface（Figure is not marked）And with first
The second surface that surface is oppositely arranged（Figure is not marked）, specifically, the second surface of planarization layer 120 is close to substrate compared with first surface
Substrate 110 is set.First surface includes flat site 121 and the uneven region 123 being connected with flat site 121, flat
Region 121 is set with the alternate intervals of uneven region 123.
Organic illuminating element 130 is located on planarization layer 120, and corresponds to the uneven region 123 of planarization layer 120
Set.Organic illuminating element 130 includes organic luminous layer 131 and reflecting layer（Figure is not marked）.Organic luminous layer 131 and reflecting layer
It is layered on uneven region 123, and the part in the reflecting layer uneven region 123 of correspondence is formed and uneven region
123 shape identical diffusing reflection portion.Wherein, diffusing reflection portion carries out diffusing reflection to the light that organic luminous layer 131 is launched.
Uneven region 123 can be bulge-structure, or groove structure, or raised is combined with groove
Structure etc..Specifically in the present embodiment, uneven region 123 is bulge-structure.Preferably, uneven region 123 is arc
Shape is raised, and diffusing reflection portion is the globoidal structure of the evagination of correspondence arc convex.Because the surface of arc convex is more mellow and full smooth,
In the absence of lobe formation, the anode and negative electrode that organic illuminating element 130 can be prevented effectively from be short-circuited it is bad, so as to improve organic
The electroluminescent stability of light-emitting component 130.
Further, the uneven region 123 of the single organic illuminating element 130 of the correspondence of planarization layer 120 can include
Single arc convex, it is also possible to raised comprising multiple arcs.Specifically in the illustrated embodiment, organic illuminating element 130 is many
Individual, each corresponding arc convex of organic illuminating element 130 is independent one.
Fig. 4 to Fig. 7 is referred to, for example, multiple organic illuminating elements 130 can send feux rouges, blue and green light respectively,
As feux rouges organic illuminating element 130a, blue light organic emissive element 130b and green glow organic illuminating element 130c.Feux rouges is organic
It is different that light-emitting component 130a, blue light organic emissive element 130b and green glow organic illuminating element 130c form three kinds of colors respectively
Sub-pixel, and the radian of the arc convex of the sub-pixel of different colours is different, for example, the arc of the arc convex of red sub-pixel
Degree is less than the radian of the arc convex of blue subpixels, the arc of the radian less than green sub-pixels of the arc convex of blue subpixels
The raised radian of shape.The different sub-pixel of every three colors constitutes a dot structure, i.e. red sub-pixel, an indigo plant
Sub-pixels and a green sub-pixels constitute a dot structure.
In other embodiments, organic illuminating element 130 is multiple, and each corresponding arc of organic illuminating element 130 is convex
It is multiple to rise, and multiple arcs projection is continuously set or interval setting.
Further, the periphery of the arc convex of planarization layer 120 can be circular or square, be easy to multiple arcs raised
Array arrangement, and be easy to using gray-tone mask version exposure（Half Tone Mask）Shaping.
Further, organic light-emitting display device 100 also includes separation layer 140, and separation layer 140 is formed in planarization layer
On 120 first surface, and it is provided with the opening of exposure organic illuminating element 130（Figure is not marked）, opening correspondence planarization layer 120
Uneven region 123 set.
In general, organic illuminating element 130 includes pixel electrode layer 133, the organic hair on pixel electrode layer 133
Photosphere 131 and the common electrode layer on organic luminous layer 131 135.Here, pixel electrode layer 133 is the sky as anode (+)
Cave injecting electrode, common electrode layer 135 is the electron injection electrode as negative electrode (-).However, the invention is not restricted to this.According to having
The driving method of machine luminous display unit 100, pixel electrode layer 133 can also be negative electrode, and common electrode layer 135 can also be sun
Pole.Hole and electronics are injected into organic luminous layer 131 from pixel electrode layer 133 and common electrode layer 135 respectively.When by injecting
The exciton that the combination of hole and electronics is produced from excitation state be down to ground state when, launching light.
Reflecting layer can be pixel electrode layer 133, or common electrode layer 135, or, with pixel electrode layer 133 and
Different independent one layer of common electrode layer 135.In the illustrated embodiment, reflecting layer is pixel electrode layer 133, pixel electrode layer
133 are covered on uneven region 123, and organic luminous layer 131 is covered on pixel electrode layer 133 and separation layer 140, common-battery
Pole layer 135 is made up of semi-transparent conductive material, and is covered on organic luminous layer 131.
In other embodiments, reflecting layer is common electrode layer 135, and pixel electrode layer 133 is made up of transparent conductive material, and
And be covered on uneven region 123, organic luminous layer 131 is covered on pixel electrode layer 133 and separation layer 140, common-battery
Pole layer 135 is covered on organic luminous layer 131.
Organic luminous layer 131 is made up of low molecule organic material or macromolecule organic material.Organic luminous layer 131 can be by
Be formed as multilayer, multilayer includes hole injection layer (HIL), hole transmission layer (HTL), emission layer, electron transfer layer (ETL) and electricity
Sub- implanted layer (EIL).That is, hole injection layer (HIL) is arranged on the pixel electrode layer 133 as anode, hole transmission layer
(HTL), emission layer, electron transfer layer (ETL) and electron injecting layer (EIL) are sequentially stacked on hole injection layer (HIL).
When one of them that reflecting layer is pixel electrode layer 133 and common electrode layer 135, pixel electrode layer 133 and common-battery
Pole layer one of 135 can be made up of transparent conductive material, and another can be made up of translucent or reflexive conductive material.For
The type for forming the material of pixel electrode layer 133 and common electrode layer 135 determines the type of organic light-emitting display device 100, for example,
Top emission structure, bottom emissive type.
For transparent conductive material, tin indium oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and oxygen can be used
Change indium (In2O3).For reflexive material, lithium (Li), calcium (Ca), lithium fluoride/calcium (LiF/Ca), lithium fluoride/aluminium can be used
(LiF/Al), aluminium (Al), silver-colored (Ag), magnesium (Mg) or golden (Au).
Further, organic light-emitting display device 100 also includes capacitor（It is not shown）, capacitor include first maintain electricity
Pole, the second maintenance electrode and the interlayer insulating film 160 being arranged between the first maintenance electrode and the second maintenance electrode.
Further, organic light-emitting display device 100 also includes film crystal diode, and thin film diode is located at substrate base
On plate 110, and including gate electrode, source electrode and drain electrode, the second surface of planarization layer 120 is covered in thin film diode
On, and with making the exposed contact hole 125 of drain electrode, pixel electrode layer 133 be electrically connected with drain electrode by contact hole 125.
Thin film transistor (TFT) is divided into switching thin-film transistor（It is not shown）And drive thin film transistor (TFT) 150.Switch film crystal
Pipe includes switching semiconductor layer, switch gate electrode, switch source electrode and switch drain pole.Switching thin-film transistor be used as
Selection pixel carrys out luminous switch.Switch gate electrode is connected to gate line.Switch source electrode is connected to data wire.Switch drain pole
Separated with switch source electrode, and be connected to the first maintenance electrode.
Switching thin-film transistor is driven by the grid voltage for being applied to gate line, and is applied to the data voltage of data wire
It is transferred to driving thin film transistor (TFT) 150.Capacitor will be stored and be applied to being total to for driving thin film transistor (TFT) 150 with from public power wire
Voltage and from the voltage difference corresponding voltage between the data voltage of switching thin-film transistor transmission, with storage in the capacitor
The corresponding electric current of voltage flows to organic illuminating element 130 by driving thin film transistor (TFT) 150, thus lights.
Driving thin film transistor (TFT) 150 includes driving semiconductor layer 151, drives gate electrode 153, drives source electrode 154 and drive
Dynamic drain electrode 155.
Thin film transistor (TFT) 150 is driven to apply driving power, to drive the organic illuminating element 130 in selected pixel
Organic luminous layer 131 lights.Gate electrode 153 is driven to be connected to the first maintenance electrode.Source electrode 154 and second is driven to maintain electrode
It is connected to public power wire.Drain electrode 155 is driven to be connected to organic illuminating element 130 by the contact hole 125 of planarization layer 120
Pixel electrode layer 133.
Further, organic light-emitting display device 100 also includes cushion 170, and cushion 170 is formed in underlay substrate
On 110.Cushion 170 can be penetrated into by being prevented from impurity and the various materials with flat surfaces are made.For example, silicon nitride
One of layer (SiNx), silicon oxide layer (SiO2) and silicon oxynitride layer (SiOxNy) are used as cushion 170.However, because cushion
170 elements being not required, so cushion 170 can be omitted according to the type of underlay substrate 110 and fabrication process condition.
Semiconductor layer 151 is driven to be formed on cushion 170.Semiconductor layer 151 is driven to be formed polysilicon layer.Separately
Outward, driving semiconductor layer 151 includes channel region 151a, source region 151b and drain region 151c.Source region 151b and drain region 151c are arranged on
The both sides of channel region 151a.Channel region 151a is not mixed with impurity, and source region 151b and drain region 151c is doped with p type impurity (p+).
Here, the ionic material of doping is p type impurity, such as boron (B), generally, uses B2H6.Here, such impurity can be according to TFT
Type change.Drive gate electrode 153 to be stacked with least a portion of semiconductor layer 151 is driven, specifically, drive gate electrode
153 are stacked with channel region 151a.
The gate insulator 180 being made up of silicon nitride (SiNx) or silica (SiO2) is formed in driving semiconductor layer 151
On.It is formed on gate insulator 180 with the grid wiring of gate electrode 153 is driven.Grid wiring also includes gate line, first
Maintain electrode and other wirings.
Interlayer insulating film 160 is formed on gate insulator 180, and the covering of interlayer insulating film 160 drives gate electrode 153.Grid
Pole insulating barrier 180 and interlayer insulating film 160 include making the source region 151b of driving semiconductor layer 151 and drain region 151c exposed jointly
Through hole.As gate insulator 180, interlayer insulating film 160 is made up of silicon nitride (SiNx) or silica (SiO2).
It should be noted that the film with PMOS structures, the thin film transistor (TFT) of NMOS structures and with CMOS structure is brilliant
Body pipe can be employed as driving thin film transistor (TFT) 150.It can be the polycrystalline crystal with polysilicon layer to drive thin film transistor (TFT) 150
Pipe, or polycrystalline crystal pipe or the amorphous transistor with amorphous silicon layer.
Further, organic light-emitting display device 100 also includes cap 190, and cap 190 is located at common electrode layer 135
The side relative with pixel electrode layer 133, plays a part of protection device.
Fig. 8 is referred to, the organic light-emitting display device 200 of embodiments of the present invention two is organic with implementation method one
Luminous display unit 100 is substantially similar, and difference is：The organic illuminating element 230 of organic light-emitting display device 200 has
Machine luminescent layer 231 is only placed only on pixel electrode layer 233.
For example, wherein in one embodiment, reflecting layer is pixel electrode layer 233, and pixel electrode layer 233 is covered in concavo-convex
On uneven region 223, organic luminous layer 231 is covered on pixel electrode layer 233, and common electrode layer 235 is by semi-transparent conductive material
It is made, and is covered on organic luminous layer 231.
In other embodiments, reflecting layer is common electrode layer 235, and pixel electrode layer 233 is made up of transparent conductive material, and
And be covered on uneven region 223, organic luminous layer 231 is covered on pixel electrode layer 233, and common electrode layer 235 is covered
On organic luminous layer 231.
Meanwhile, the present invention also provides a kind of manufacture method of above-mentioned organic light-emitting display device.
Also referring to Fig. 3 and Fig. 9, a kind of manufacture method of organic light-emitting display device, comprise the following steps S201 and
Step S202.
Step S201, is molded one layer of planarization layer 120, and planarization layer 120 has first surface and relative with first surface
The second surface of setting, and in first surface formation flat site 121 and the uneven region being connected with flat site 121
123, flat site 121 is set with the alternate intervals of uneven region 123.
Step S201, forms organic illuminating element 130 on uneven region 123, and organic illuminating element 130 is included
Machine luminescent layer 131 and reflecting layer, organic luminous layer 131 and reflective layer are stacked in the uneven region 123 of planarization layer 120
On, and reflecting layer corresponds to the part formation in uneven region 123 and the shape identical diffusing reflection in uneven region 123
Portion.
Reflecting layer can for pixel electrode layer 133, can also be common electrode layer 135, or, with pixel electrode layer 133 and
Different independent one layer of common electrode layer 135, can be according to different types of reflecting layer, using different manufacture methods.
If reflecting layer is pixel electrode layer 133, the step of organic illuminating element 130 is formed on uneven region 123
Suddenly further include：
Mask exposure is molded one layer of separation layer 140 on the first surface of planarization layer 120, is formed on separation layer 140
There is the opening being correspondingly arranged with uneven region 123, be open for exposing organic illuminating element 130；
One layer of reflective conductive material is deposited on uneven region 123, to form pixel electrode layer 133；
Organic luminous layer is deposited with pixel electrode layer 133, or pixel electrode layer 133 and separation layer 140, it is organic to be formed
Luminescent layer 131；
One layer of semi-transparent conductive material is deposited with organic luminous layer 131, to form common electrode layer 135.
If reflecting layer is common electrode layer 135, on uneven region 123 the step of formation organic illuminating element 130
Further include：
Mask exposure is molded one layer of separation layer 140 on the first surface of planarization layer 120, is formed on separation layer 140
There is the opening being correspondingly arranged with uneven region 123, be open for exposing organic illuminating element 130；
Layer of transparent conductive material is deposited on uneven region 123, to form pixel electrode layer 133；
Organic luminous layer is deposited with pixel electrode layer 133, or pixel electrode layer 133 and separation layer 140, it is organic to be formed
Luminescent layer 131；
One layer of reflective conductive material is deposited with organic luminous layer 131, to form common electrode layer 135.
The planarization layer 120 of above-mentioned organic light-emitting display device 100 is provided with uneven region 123, organic illuminating element
130 are formed with shape identical reflecting layer on uneven region 123, so that the reflecting layer can carry out diffusing reflection, effectively
Control mirror-reflection；Also, the shape in reflecting layer also for rough shape is identical, increases light-emitting area, improves list
Plane accumulates luminous efficiency；Further, since the reflecting layer can effectively control mirror-reflection, then can omit or reduce rotatory polarization piece, greatly
Improve light extraction efficiency greatly.
Planarization of the shaping with uneven region 123 in advance of the preparation method of above-mentioned organic light-emitting display device 100
Layer 120, using the uneven region 123 of hardware and software platform layer as reflecting layer forming panel, and without individually independent mask
Version or mould, therefore, the preparation method of above-mentioned organic light-emitting display device 100 is simple to manufacture, convenient, and cost compared with
It is low.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of organic light-emitting display device, it is characterised in that including：
The planarization layer of the second surface being oppositely arranged with first surface and with the first surface, the first surface includes
Flat site and the uneven region being connected with the flat site, the flat site replace with the uneven region
Interval setting；And
On the planarization layer and the organic illuminating element that sets of the correspondence uneven region, organic hair
Optical element includes organic luminous layer and reflecting layer, and the organic luminous layer and the reflective layer are stacked in the uneven area
On domain, and the part in the reflecting layer correspondence uneven region forms identical with the shape in the uneven region
Diffusing reflection portion；
Wherein, the uneven region is arc convex, and the diffusing reflection portion is the arc of the evagination of the correspondence arc convex
Face structure, the diffusing reflection portion carries out diffusing reflection to the light that the organic luminous layer is launched；
The organic illuminating element is multiple, each one described arc convex of the organic illuminating element correspondence；It is the multiple
Organic illuminating element can send feux rouges, blue and green light respectively, and the different sub-pixel of three kinds of colors, and different face are formed respectively
The radian of the arc convex of the sub-pixel of color is different；The different sub-pixel of every three colors constitutes a pixel
Structure.
2. organic light-emitting display device as claimed in claim 1, it is characterised in that the periphery of the arc convex for circular or
It is square.
3. organic light-emitting display device as claimed in claim 1 or 2, it is characterised in that also including separation layer, the separation layer
Formed on the first surface, and be provided with the opening for exposing the organic illuminating element, the opening correspondence is described concavo-convex
Uneven region is set.
4. organic light-emitting display device as claimed in claim 3, it is characterised in that the reflecting layer is pixel electrode layer, institute
Stating organic illuminating element also includes common electrode layer；The pixel electrode layer is covered on the uneven region, described organic
Luminescent layer is covered on the pixel electrode layer and the separation layer, and the common electrode layer is made up of semi-transparent conductive material, and
And be covered on the organic luminous layer；
Or, the reflecting layer is common electrode layer, and the organic illuminating element also includes pixel electrode layer；The pixel electrode layer
It is made up of transparent conductive material, and is covered on the uneven region, the organic luminous layer is covered in the pixel
On electrode layer and the separation layer, the common electrode layer is covered on the organic luminous layer.
5. organic light-emitting display device as claimed in claim 4, it is characterised in that also including film crystal diode and substrate
Substrate, the thin film diode is located on the underlay substrate, and including gate electrode, source electrode and drain electrode, it is described flat
The second surface for changing layer is covered on the thin film diode, and with making the exposed contact hole of the drain electrode, institute
Pixel electrode layer is stated to be electrically connected with the drain electrode by the contact hole.
6. a kind of manufacture method of organic light-emitting display device, it is characterised in that comprise the following steps：
One layer of planarization layer of shaping, the planarization layer has first surface and the second table being oppositely arranged with the first surface
Face, and flat site and the uneven region being connected with the flat site are formed in the first surface, it is described flat
Region is set with the uneven region alternate intervals；
Organic illuminating element is formed on the uneven region, the organic illuminating element includes organic luminous layer and reflection
Layer, the organic luminous layer and the reflective layer are stacked on the uneven region, and reflecting layer correspondence is described
The part in uneven region forms the shape identical diffusing reflection portion with the uneven region；
Wherein, the uneven region is arc convex, and the diffusing reflection portion is the arc of the evagination of the correspondence arc convex
Face structure, the diffusing reflection portion carries out diffusing reflection to the light that the organic luminous layer is launched；
The organic illuminating element is multiple, each one described arc convex of the organic illuminating element correspondence；It is the multiple
Organic illuminating element can send feux rouges, blue and green light respectively, and the different sub-pixel of three kinds of colors, and different face are formed respectively
The radian of the arc convex of the sub-pixel of color is different；The different sub-pixel of every three colors constitutes a pixel
Structure.
7. the manufacture method of organic light-emitting display device as claimed in claim 6, it is characterised in that if the reflecting layer is picture
Plain electrode layer, then it is described to be further included the step of formation organic illuminating element on the uneven region：
Mask exposure is molded one layer of separation layer on the first surface, is formed with the separation layer uneven with described
The opening that region is correspondingly arranged, the opening is used to expose the organic illuminating element；
One layer of reflective conductive material is deposited on the uneven region, to form the pixel electrode layer；
Luminous organic material is deposited with the pixel electrode layer, or the pixel electrode layer and the separation layer, to be formed
The organic luminous layer；
One layer of semi-transparent conductive material is deposited with the organic luminous layer, to form common electrode layer.
8. the manufacture method of organic light-emitting display device as claimed in claim 6, it is characterised in that if the reflecting layer is common
Electrode layer, then it is described to be further included the step of formation organic illuminating element on the uneven region：
Mask exposure is molded one layer of separation layer on the first surface, is formed with the separation layer uneven with described
The opening that region is correspondingly arranged, the opening is used to expose the organic illuminating element；
Layer of transparent conductive material is deposited on the uneven region, to form pixel electrode layer；
Luminous organic material is deposited with the pixel electrode layer, or the pixel electrode layer and the separation layer, to be formed
The organic luminous layer；
One layer of reflective conductive material is deposited with the organic luminous layer, to form the common electrode layer.
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| CN105826356B (en) * | 2016-05-04 | 2020-05-05 | Tcl科技集团股份有限公司 | Display panel with high aperture ratio and manufacturing method thereof |
| CN106024807B (en) * | 2016-06-07 | 2019-11-29 | 上海天马有机发光显示技术有限公司 | A kind of display panel and preparation method thereof |
| CN107068897B (en) * | 2017-01-18 | 2018-12-14 | 京东方科技集团股份有限公司 | A kind of top light emitting-type OLED display panel and display device |
| CN107316949B (en) | 2017-07-11 | 2020-07-31 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| KR102416417B1 (en) * | 2017-11-24 | 2022-07-04 | 삼성디스플레이 주식회사 | Display device and method of manufacturing the same |
| CN108305891A (en) * | 2018-02-12 | 2018-07-20 | 上海天马微电子有限公司 | A kind of display panel and its manufacturing method, display device |
| KR102605887B1 (en) * | 2018-05-08 | 2023-11-23 | 엘지디스플레이 주식회사 | Light emitting display apparatus |
| CN109659338A (en) * | 2018-12-10 | 2019-04-19 | 武汉华星光电半导体显示技术有限公司 | OLED display |
| CN110085751B (en) * | 2019-04-19 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode device and forming method thereof |
| CN110323349B (en) * | 2019-07-01 | 2022-04-12 | 昆山国显光电有限公司 | Organic light-emitting display panel and organic light-emitting display device |
| US20230225169A1 (en) * | 2021-05-26 | 2023-07-13 | Boe Technology Group Co., Ltd. | Display Substrate, Manufacturing Method thereof and Display Device |
| CN113782690A (en) * | 2021-08-30 | 2021-12-10 | 合肥维信诺科技有限公司 | Light emitting device and display panel |
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