CN104733632A - Organic light emitting display and manufacturing method thereof - Google Patents
Organic light emitting display and manufacturing method thereof Download PDFInfo
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- CN104733632A CN104733632A CN201310698245.1A CN201310698245A CN104733632A CN 104733632 A CN104733632 A CN 104733632A CN 201310698245 A CN201310698245 A CN 201310698245A CN 104733632 A CN104733632 A CN 104733632A
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Abstract
The invention discloses an organic light emitting display and a manufacturing method thereof. The organic light emitting display comprises a flatness layer and an organic light emitting element, wherein the first surface of the flatness layer comprises a flat area and a rugged area connected with the flat area, and the flat area and the rugged area are arranged in a stagger and interval mode; the organic light emitting element comprises an organic light emitting layer and a reflection layer; the organic light emitting layer and the reflection layer are stacked on the rugged area; and the part, corresponding to the rugged area, of the reflection layer is provided with a diffuse reflection part with the same shape as that of the rugged area. According to the above organic light emitting display, the reflection layer with the same shape is formed on the rugged area on the organic light emitting element, and mirror reflection can be effectively controlled; as the reflection layer has a rugged shape, the light emitting area is increased, and the light emitting efficiency per unit area is improved; and in addition, as the reflection layer can effectively control mirror reflection, circular polarizers can be saved or reduced, and the light extraction efficiency is greatly improved.
Description
[technical field]
The present invention relates to a kind of display unit and manufacture method thereof, particularly relate to a kind of organic light-emitting display device and manufacture method thereof.
[background technology]
Organic light emitting display (OLED) is a kind of active illuminating device.Compare present main flow flat panel display and Thin Film Transistor-LCD (TFT-LCD), organic light emitting display has high-contrast, wide viewing angle, low-power consumption, the advantage such as more frivolous, and can be used for making flexible display screen, transparent display screen etc., being expected to the flat panel display of future generation become after liquid crystal indicator, is maximum technology that receives publicity in current flat panel display.
Because organic light-emitting display device is selfluminous element, usually can using one of them electrode in two of an organic light-emitting display device electrode as reflecting electrode, to improve light utilization efficiency.Such as, Fig. 1 is the structural representation of the single pixel of traditional organic light-emitting display device 10.Refer to Fig. 1, underlay substrate 11 can for being glass, plastics etc., and planarization layer 12 is positioned on underlay substrate 11.The below of planarization layer 12 is drive circuit, is provided with contact hole in planarization layer 12.Reflecting electrode 13 is planar structure, and is connected with the drive circuit of below by contact hole, provides signal by drive circuit.
This reflecting electrode 13 is produced on planarization layer 12 usually, and when there being very strong ambient light incident to organic light-emitting display device, this reflecting electrode 13 mirror-reflection can occur, and deteriorates display effect.In order to improve this shortcoming, the surface of organic light-emitting display device can attach a rotatory polarization sheet.As shown in Figure 2, this rotatory polarization sheet comprises two parts composition, is line polarisation part 30 and quarter-wave plate 20 respectively.Its operation principle is, first ambient light becomes line polarisation by line polarisation part 30, then becomes circularly polarized light after quarter-wave plate 20; This circularly polarized light becomes linearly polarized light again again through the reflection of reflecting electrode 13 after quarter-wave plate 20, but the polarization direction of this linearly polarized light there occurs 90 degree of rotations, is just in time blocked by line polarisation part 30 and cannot transmission.Therefore, whole structure avoids the reflection of reflecting electrode 13 light to external world.But, because quarter-wave plate 20 and wavelength strong correlation, effective to some wavelength, will weaken the effect of other wavelength, be not therefore absolutely effectively.Meanwhile, because the existence of this rotatory polarization sheet, the light that organic light-emitting display device sends also has over half being blocked at least, greatly reduces the light extraction efficiency of organic light-emitting display device.
Therefore, have one for reflective electrode in the negative electrode of traditional organic light emitting display and anode, this reflective electrode reflect ambient light, causes contrast to decline, and has a strong impact on display quality.Further, traditional solution attaches rotatory polarization sheet, but greatly reduce light extraction efficiency.
[summary of the invention]
In view of above-mentioned condition, be necessary to provide a kind of mirror-reflection reducing electrode, improve again organic light-emitting display device and the manufacture method thereof of luminous efficiency simultaneously.
A kind of organic light-emitting display device, comprising:
The planarization layer of the second surface that there is first surface and be oppositely arranged with described first surface, the uneven region that described first surface comprises flat site and is connected with described flat site, described flat site and described uneven region alternate intervals are arranged; And
Be positioned at the organic illuminating element that on described planarization layer and corresponding described uneven region is arranged, described organic illuminating element comprises organic luminous layer and reflector, described organic luminous layer and described reflective layer are stacked on described uneven region, and the part in corresponding described uneven region, described reflector forms the diffuse reflection portion identical with the shape in described uneven region;
Wherein, described diffuse reflection portion carries out diffuse reflection to the light that described 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 formed with the identical reflector of shape on uneven region, thus makes this reflector carry out diffuse reflection, effectively controls mirror-reflection; Further, the shape in reflector is also and rough shape increase light-emitting area, improve unit are luminous efficiency; In addition, because this reflector effectively can control mirror-reflection, then can omit or reduce rotatory polarization sheet, substantially increase light extraction efficiency.
Wherein in an embodiment, described uneven region is arc convex, and described diffuse reflection portion is the globoidal structure of the evagination of corresponding described arc convex.
Wherein in an embodiment, described organic illuminating element is multiple, and the described arc convex that each described organic illuminating element is corresponding is multiple, and multiple described arc convex is arranged continuously or interval is arranged;
Or described organic illuminating element is multiple, the corresponding described arc convex of each described organic illuminating element; Described multiple organic illuminating element can send ruddiness, blue light, green glow respectively, forms the different sub-pixel of three kinds of colors respectively, and the radian of the described arc convex of the different sub-pixel of described three kinds of different colours is different; The described sub-pixel that every three colors are different forms a dot structure.
Wherein in an embodiment, the periphery of described arc convex is circular or square.
Wherein in an embodiment, also comprise separator, described separator is formed on the first surface, and is provided with the opening exposing described organic illuminating element, and the corresponding described uneven region of described opening is arranged.
Wherein in an embodiment, described reflector is pixel electrode layer, and described organic illuminating element also comprises common electrode layer; Described pixel electrode layer covers on described uneven region, and described organic luminous layer covers on described pixel electrode layer and described separator, and described common electrode layer is made up of semi-transparent conductive material, and covers on described organic luminous layer;
Or described reflector is common electrode layer, and described organic illuminating element also comprises pixel electrode layer; Described pixel electrode layer is made up of transparent conductive material, and covers on described uneven region, and described organic luminous layer covers on described pixel electrode layer and described separator, and described common electrode layer covers on described organic luminous layer.
Wherein in an embodiment, also comprise film crystal diode and underlay substrate, described thin film diode is positioned on described underlay substrate, and comprise gate electrode, source electrode and drain electrode, the described second surface of described planarization layer covers on described thin film diode, and have the contact hole making described drain electrode expose, described pixel electrode layer is electrically connected with described drain electrode by described contact hole.
A manufacture method for organic light-emitting display device, it comprises the steps:
Shaping one deck planarization layer, the second surface that described planarization layer has first surface and is oppositely arranged with described first surface, and in the uneven region that described first surface forms flat site and is connected with described flat site, described flat site and described uneven region alternate intervals are arranged;
Described uneven region forms organic illuminating element, described organic illuminating element comprises organic luminous layer and reflector, described organic luminous layer and described reflective layer are stacked on described uneven region, and the part in corresponding described uneven region, described reflector forms the diffuse reflection portion identical with the shape in described uneven region.
Wherein in an embodiment, if described reflector is pixel electrode layer, then the described step forming organic illuminating element on described uneven region comprises further:
The shaping one deck separator of mask exposure on the first surface, described separator is formed with the opening that arrange corresponding to described uneven region, described opening is for exposing described organic illuminating element;
Described uneven region deposits one deck reflective conductive material, to form described pixel electrode layer;
At described pixel electrode layer, or evaporation luminous organic material on described pixel electrode layer and described separator, to form described organic luminous layer;
Evaporation one deck semi-transparent conductive material on described organic luminous layer, to form common electrode layer.
Wherein in an embodiment, if described reflector is common electrode layer, then the described step forming organic illuminating element on described uneven region comprises further:
The shaping one deck separator of mask exposure on the first surface, described separator is formed with the opening that arrange corresponding to described uneven region, described opening is for exposing described organic illuminating element;
Described uneven region deposits layer of transparent electric conducting material, to form pixel electrode layer;
At described pixel electrode layer, or evaporation luminous organic material on described pixel electrode layer and described separator, to form described organic luminous layer;
Evaporation one deck reflective conductive material on described organic luminous layer, to form described common electrode layer.
Preparation method's shaping planarization layer with uneven region in advance of above-mentioned organic light-emitting display device, using the forming panel of the uneven region of this hardware and software platform layer as reflector, and without the need to independent independently mask plate or mould, therefore, the preparation method of above-mentioned organic light-emitting display device manufactures simply, convenience, and cost is lower.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the single pixel of traditional organic light-emitting display device;
Fig. 2 is the principle of reflection schematic diagram that traditional organic light-emitting display device adopts rotatory polarization sheet;
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;
The profile of the blue organic illuminating element that Fig. 5 is the organic light-emitting display device shown in Fig. 3;
The profile of the green organic illuminating element that Fig. 6 is the organic light-emitting display device shown in Fig. 3;
Fig. 7 is the vertical 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.
[embodiment]
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.On the contrary, when element be referred to as " directly existing " another element " on " time, then there is not intermediary element.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 3, the organic light-emitting display device 100 of one embodiment of the present invention, comprise underlay substrate 110, planarization layer 120 and organic illuminating element 130.
The dielectric substrate that underlay substrate 110 can be made up of glass, quartz, pottery or plastics is formed.Such as, but the present invention is not limited thereto, the metallic substrates that underlay substrate 110 can be made up of stainless steel is formed.
Planarization layer 120 is positioned on underlay substrate 110.The second surface (scheming not mark) that planarization layer 120 has first surface (figure do not mark) and is oppositely arranged with first surface, concrete, the second surface of planarization layer 120 comparatively first surface is arranged near underlay substrate 110.The uneven region 123 that first surface comprises flat site 121 and is connected with flat site 121, flat site 121 and uneven region 123 alternate intervals are arranged.
Organic illuminating element 130 is positioned on planarization layer 120, and the uneven region 123 of corresponding planarization layer 120 is arranged.Organic illuminating element 130 comprises organic luminous layer 131 and reflector (figure does not mark).Organic luminous layer 131 and reflective layer are stacked on uneven region 123, and the part in corresponding uneven region 123, reflector forms the diffuse reflection portion identical with the shape in uneven region 123.Wherein, diffuse reflection portion carries out diffuse reflection to the light that organic luminous layer 131 is launched.
Uneven region 123 can be bulge-structure, also can be groove structure, or the protruding structure etc. combined with groove.Specifically in the present embodiment, uneven region 123 is bulge-structure.Preferably, uneven region 123 is arc convex, and diffuse reflection portion is the globoidal structure of the evagination of corresponding arc convex.Because the surface of arc convex is comparatively smoothly mellow and full, there is not lobe formation, can effectively avoid the anode of organic illuminating element 130 and negative electrode to be short-circuited bad, thus improve the electroluminescent stability of organic illuminating element 130.
Further, the uneven region 123 of the corresponding single organic illuminating element 130 of planarization layer 120 can comprise single arc convex, also can comprise multiple arc convex.Specifically in the illustrated embodiment in which, organic illuminating element 130 is multiple, and the arc convex of each organic illuminating element 130 correspondence is independent one.
Refer to Fig. 4 to Fig. 7, such as, multiple organic illuminating element 130 can send ruddiness, blue light, green glow respectively, is ruddiness organic illuminating element 130a, blue light organic emissive element 130b and green glow organic illuminating element 130c.Ruddiness organic illuminating element 130a, blue light organic emissive element 130b and green glow organic illuminating element 130c form the different sub-pixel of three kinds of colors respectively, and the radian of the arc convex of the sub-pixel of different colours is different, such as, the radian of the arc convex of red sub-pixel is less than the radian of the arc convex of blue subpixels, and the radian of the arc convex of blue subpixels is less than the radian of the arc convex of green sub-pixels.The sub-pixel that every three colors are different forms a dot structure, that is, a red sub-pixel, a blue subpixels and a green sub-pixels form a dot structure.
In other embodiments, organic illuminating element 130 is multiple, and the arc convex of each organic illuminating element 130 correspondence is multiple, and multiple arc convex is arranged continuously or interval is arranged.
Further, the periphery of the arc convex of planarization layer 120 can be circular or square, is convenient to multiple arc convex array arrangement, and is convenient to adopt gray-tone mask version exposure (Half Tone Mask) shaping.
Further, organic light-emitting display device 100 also comprises separator 140, separator 140 is formed on the first surface of planarization layer 120, and is provided with the opening (figure does not mark) exposing organic illuminating element 130, and the uneven region 123 of the corresponding planarization layer 120 of opening is arranged.
In general, organic illuminating element 130 common electrode layer 135 that comprises pixel electrode layer 133, be positioned at the organic luminous layer 131 on pixel electrode layer 133 and be positioned on organic luminous layer 131.Here, pixel electrode layer 133 is the hole injecting electrodes as anode (+), and common electrode layer 135 is the electron injection electrodes as negative electrode (-).But, the present invention is not limited thereto.According to the driving method of organic light-emitting display device 100, pixel electrode layer 133 also can be negative electrode, and common electrode layer 135 also can be anode.Hole and electronics are injected into organic luminous layer 131 from pixel electrode layer 133 and common electrode layer 135 respectively.When the exciton that the combination by injected holes and electronics produces is down to ground state from excitation state, utilizing emitted light.
Reflector can be pixel electrode layer 133, also can be common electrode layer 135, or, independent one deck different from pixel electrode layer 133 and common electrode layer 135.In the illustrated embodiment in which, reflector is pixel electrode layer 133, pixel electrode layer 133 covers on uneven region 123, organic luminous layer 131 covers on pixel electrode layer 133 and separator 140, common electrode layer 135 is made up of semi-transparent conductive material, and covers on organic luminous layer 131.
In other embodiments, reflector is common electrode layer 135, and pixel electrode layer 133 is made up of transparent conductive material, and covers on uneven region 123, organic luminous layer 131 covers on pixel electrode layer 133 and separator 140, and common electrode layer 135 covers 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 formed multilayer, and multilayer comprises hole injection layer (HIL), hole transmission layer (HTL), emission layer, electron transfer layer (ETL) and electron injecting layer (EIL).Namely, hole injection layer (HIL) is arranged on the pixel electrode layer 133 as anode, and hole transmission layer (HTL), emission layer, electron transfer layer (ETL) and electron injecting layer (EIL) are sequentially stacked on hole injection layer (HIL).
When reflector is one of them of pixel electrode layer 133 and common electrode layer 135, one of pixel electrode layer 133 and common electrode layer 135 can be made up of transparent electric conducting material, and another can be made up of translucent or reflexive electric conducting material.For the formation of the type of the type determination organic light-emitting display device 100 of the material of pixel electrode layer 133 and common electrode layer 135, such as, top emission structure, bottom emissive type.
For transparent electric conducting material, tin indium oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and indium oxide (In2O3) can be used.For reflexive material, lithium (Li), calcium (Ca), lithium fluoride/calcium (LiF/Ca), lithium fluoride/aluminium (LiF/Al), aluminium (Al), silver (Ag), magnesium (Mg) or gold (Au) can be used.
Further, organic light-emitting display device 100 also comprises capacitor (not shown), the interlayer insulating film 160 that capacitor comprises the first maintenance electrode, the second maintenance electrode and is arranged between the first maintenance electrode and the second maintenance electrode.
Further, organic light-emitting display device 100 also comprises film crystal diode, thin film diode is positioned on underlay substrate 110, and comprise gate electrode, source electrode and drain electrode, the second surface of planarization layer 120 covers on thin film diode, and have the contact hole 125 making drain electrode expose, pixel electrode layer 133 is electrically connected with drain electrode by contact hole 125.
Thin-film transistor is divided into switching thin-film transistor (not shown) and drives thin-film transistor 150.Switching thin-film transistor comprises switching semiconductor layer, switch gate electrode, switch source electrode and switch drain pole.Switching thin-film transistor is used as selecting pixel to carry out luminous switch.Switch gate electrode is connected to gate line.Switch source electrode is connected to data wire.Switch drain pole separates with switch source electrode, and is connected to the first maintenance electrode.
Switching thin-film transistor is driven by the grid voltage being applied to gate line, and the data voltage being applied to data wire is transferred to driving thin-film transistor 150.Capacitor by store be applied to from public power wire drive the common voltage of thin-film transistor 150 and transmit from switching thin-film transistor data voltage between voltage corresponding to voltage difference, the electric current corresponding with the voltage stored in the capacitor is by driving thin-film transistor 150 to flow to organic illuminating element 130, luminous thus.
Drive thin-film transistor 150 to comprise and drive semiconductor layer 151, driving gate electrode 153, drive source electrode 154 and drive drain electrode 155.
Thin-film transistor 150 is driven to apply driving power, to drive the organic luminous layer 131 of the organic illuminating element 130 in selected pixel luminous.Gate electrode 153 is driven to be connected to the first maintenance electrode.Drive source electrode 154 and the second maintenance electrode are connected to public power wire.Drain electrode 155 is driven to be connected to the pixel electrode layer 133 of organic illuminating element 130 by the contact hole 125 of planarization layer 120.
Further, organic light-emitting display device 100 also comprises resilient coating 170, and resilient coating 170 is formed on underlay substrate 110.Resilient coating 170 can infiltrate by preventing impurity and the various materials with flat surfaces are made.Such as, silicon nitride layer (SiNx), one of silicon oxide layer (SiO2) and silicon oxynitride layer (SiOxNy) are used as resilient coating 170.But, because the optional element of resilient coating 170, so resilient coating 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 resilient coating 170.Semiconductor layer 151 is driven to be formed polysilicon layer.In addition, semiconductor layer 151 is driven to comprise channel region 151a, source region 151b and drain region 151c.Source region 151b and drain region 151c is 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, as boron (B), usually, uses B2H6.Here, such impurity can according to the type change of TFT.Drive gate electrode 153 and drive the stacked at least partially of semiconductor layer 151, specifically, driving gate electrode 153 and channel region 151a stacked.
The gate insulator 180 be made up of silicon nitride (SiNx) or silica (SiO2) is formed in and drives on semiconductor layer 151.Have and drive the grid wiring of gate electrode 153 to be formed on gate insulator 180.Grid wiring also comprises gate line, the first maintenance electrode and other wiring.
Interlayer insulating film 160 is formed on gate insulator 180, and interlayer insulating film 160 covers and drives gate electrode 153.Gate insulator 180 and interlayer insulating film 160 comprise the through hole of source region 151b and the drain region 151c exposure making driving semiconductor layer 151 jointly.The same with gate insulator 180, interlayer insulating film 160 is made up of silicon nitride (SiNx) or silica (SiO2).
It should be noted that to there is PMOS structure, the thin-film transistor of NMOS structure and the thin-film transistor with CMOS structure and all can be used as driving thin-film transistor 150.Drive thin-film transistor 150 for having the polycrystalline crystal pipe of polysilicon layer, also can be polycrystalline crystal pipe or the amorphous transistor with amorphous silicon layer.
Further, organic light-emitting display device 100 also comprises cap 190, and cap 190 is located at common electrode layer 135 side relative with pixel electrode layer 133, plays the effect of protection device.
Refer to Fig. 8, the organic light-emitting display device 200 of embodiments of the present invention two, with organic light-emitting display device 100 basic simlarity of execution mode one, difference is: the organic luminous layer 231 of the organic illuminating element 230 of organic light-emitting display device 200 only covers on pixel electrode layer 233.
Such as, wherein in an embodiment, reflector is pixel electrode layer 233, pixel electrode layer 233 covers on uneven region 223, organic luminous layer 231 covers on pixel electrode layer 233, and common electrode layer 235 is made up of semi-transparent conductive material, and covers on organic luminous layer 231.
In other embodiments, reflector is common electrode layer 235, and pixel electrode layer 233 is made up of transparent conductive material, and covers on uneven region 223, organic luminous layer 231 covers on pixel electrode layer 233, and common electrode layer 235 covers on organic luminous layer 231.
Meanwhile, the present invention also provides a kind of manufacture method of above-mentioned organic light-emitting display device.
See also Fig. 3 and Fig. 9, a kind of manufacture method of organic light-emitting display device, comprise the steps S201 and step S202.
Step S201, shaping one deck planarization layer 120, the second surface that planarization layer 120 has first surface and is oppositely arranged with first surface, and in the uneven region 123 that first surface forms flat site 121 and is connected with flat site 121, flat site 121 and uneven region 123 alternate intervals are arranged.
Step S201, uneven region 123 forms organic illuminating element 130, organic illuminating element 130 comprises organic luminous layer 131 and reflector, organic luminous layer 131 and reflective layer are stacked on the uneven region 123 of planarization layer 120, and the part in corresponding uneven region 123, reflector forms the diffuse reflection portion identical with the shape in uneven region 123.
Reflector can be pixel electrode layer 133, also can for common electrode layer 135, or independent one deck different from pixel electrode layer 133 and common electrode layer 135, according to dissimilar reflector, can adopt different manufacture methods.
If reflector is pixel electrode layer 133, then the step forming organic illuminating element 130 on uneven region 123 comprises further:
The shaping one deck separator 140 of mask exposure on the first surface of planarization layer 120, separator 140 is formed with the opening that arrange corresponding to uneven region 123, opening is for exposing organic illuminating element 130;
Uneven region 123 deposits one deck reflective conductive material, to form pixel electrode layer 133;
At pixel electrode layer 133, or evaporation organic luminous layer on pixel electrode layer 133 and separator 140, to form organic luminous layer 131;
Evaporation one deck semi-transparent conductive material on organic luminous layer 131, to form common electrode layer 135.
If reflector is common electrode layer 135, then the step forming organic illuminating element 130 on uneven region 123 comprises further:
The shaping one deck separator 140 of mask exposure on the first surface of planarization layer 120, separator 140 is formed with the opening that arrange corresponding to uneven region 123, opening is for exposing organic illuminating element 130;
Uneven region 123 deposits layer of transparent electric conducting material, to form pixel electrode layer 133;
At pixel electrode layer 133, or evaporation organic luminous layer on pixel electrode layer 133 and separator 140, to form organic luminous layer 131;
Evaporation one deck reflective conductive material on 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, and organic illuminating element 130 is formed with the identical reflector of shape on uneven region 123, thus makes this reflector carry out diffuse reflection, effectively controls mirror-reflection; Further, the shape in reflector is also that rough shape is identical, increases light-emitting area, improves unit are luminous efficiency; In addition, because this reflector effectively can control mirror-reflection, then can omit or reduce rotatory polarization sheet, substantially increase light extraction efficiency.
Preparation method's shaping planarization layer 120 with uneven region 123 in advance of above-mentioned organic light-emitting display device 100, using the forming panel of the uneven region 123 of this hardware and software platform layer as reflector, and without the need to independent independently mask plate or mould, therefore, the preparation method of above-mentioned organic light-emitting display device 100 manufactures simply, convenience, and cost is lower.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an organic light-emitting display device, is characterized in that, comprising:
The planarization layer of the second surface that there is first surface and be oppositely arranged with described first surface, the uneven region that described first surface comprises flat site and is connected with described flat site, described flat site and described uneven region alternate intervals are arranged; And
Be positioned at the organic illuminating element that on described planarization layer and corresponding described uneven region is arranged, described organic illuminating element comprises organic luminous layer and reflector, described organic luminous layer and described reflective layer are stacked on described uneven region, and the part in corresponding described uneven region, described reflector forms the diffuse reflection portion identical with the shape in described uneven region;
Wherein, described diffuse reflection portion carries out diffuse reflection to the light that described organic luminous layer is launched.
2. organic light-emitting display device as claimed in claim 1, it is characterized in that, described uneven region is arc convex, and described diffuse reflection portion is the globoidal structure of the evagination of corresponding described arc convex.
3. organic light-emitting display device as claimed in claim 2, it is characterized in that, described organic illuminating element is multiple, and the described arc convex that each described organic illuminating element is corresponding is multiple, and multiple described arc convex is arranged continuously or interval is arranged;
Or described organic illuminating element is multiple, the corresponding described arc convex of each described organic illuminating element; Described multiple organic illuminating element can send ruddiness, blue light, green glow respectively, form the different sub-pixel of three kinds of colors respectively, and the radian of the described arc convex of the described sub-pixel of different colours is different; The described sub-pixel that every three colors are different forms a dot structure.
4. organic light-emitting display device as claimed in claim 2, is characterized in that, the periphery of described arc convex is circular or square.
5. the organic light-emitting display device as described in any one of Claims 1 to 4, it is characterized in that, also comprise separator, described separator is formed on the first surface, and be provided with the opening exposing described organic illuminating element, the corresponding described uneven region of described opening is arranged.
6. organic light-emitting display device as claimed in claim 5, it is characterized in that, described reflector is pixel electrode layer, and described organic illuminating element also comprises common electrode layer; Described pixel electrode layer covers on described uneven region, and described organic luminous layer covers on described pixel electrode layer and described separator, and described common electrode layer is made up of semi-transparent conductive material, and covers on described organic luminous layer;
Or described reflector is common electrode layer, and described organic illuminating element also comprises pixel electrode layer; Described pixel electrode layer is made up of transparent conductive material, and covers on described uneven region, and described organic luminous layer covers on described pixel electrode layer and described separator, and described common electrode layer covers on described organic luminous layer.
7. organic light-emitting display device as claimed in claim 6, it is characterized in that, also comprise film crystal diode and underlay substrate, described thin film diode is positioned on described underlay substrate, and comprise gate electrode, source electrode and drain electrode, the described second surface of described planarization layer covers on described thin film diode, and has the contact hole that described drain electrode is exposed, and described pixel electrode layer is electrically connected with described drain electrode by described contact hole.
8. a manufacture method for organic light-emitting display device, is characterized in that, comprises the steps:
Shaping one deck planarization layer, the second surface that described planarization layer has first surface and is oppositely arranged with described first surface, and in the uneven region that described first surface forms flat site and is connected with described flat site, described flat site and described uneven region alternate intervals are arranged;
Described uneven region forms organic illuminating element, described organic illuminating element comprises organic luminous layer and reflector, described organic luminous layer and described reflective layer are stacked on described uneven region, and the part in corresponding described uneven region, described reflector forms the diffuse reflection portion identical with the shape in described uneven region.
9. the manufacture method of organic light-emitting display device as claimed in claim 8, is characterized in that, if described reflector is pixel electrode layer, then the described step forming organic illuminating element on described uneven region comprises further:
The shaping one deck separator of mask exposure on the first surface, described separator is formed with the opening that arrange corresponding to described uneven region, described opening is for exposing described organic illuminating element;
Described uneven region deposits one deck reflective conductive material, to form described pixel electrode layer;
At described pixel electrode layer, or evaporation luminous organic material on described pixel electrode layer and described separator, to form described organic luminous layer;
Evaporation one deck semi-transparent conductive material on described organic luminous layer, to form common electrode layer.
10. the manufacture method of organic light-emitting display device as claimed in claim 8, is characterized in that, if described reflector is common electrode layer, then the described step forming organic illuminating element on described uneven region comprises further:
The shaping one deck separator of mask exposure on the first surface, described separator is formed with the opening that arrange corresponding to described uneven region, described opening is for exposing described organic illuminating element;
Described uneven region deposits layer of transparent electric conducting material, to form pixel electrode layer;
At described pixel electrode layer, or evaporation luminous organic material on described pixel electrode layer and described separator, to form described organic luminous layer;
Evaporation one deck reflective conductive material on described organic luminous layer, to form described common electrode layer.
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Cited By (12)
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| CN105826356A (en) * | 2016-05-04 | 2016-08-03 | Tcl集团股份有限公司 | Display panel with high aperture ratio and manufacturing method |
| CN106024807A (en) * | 2016-06-07 | 2016-10-12 | 上海天马有机发光显示技术有限公司 | Display panel and manufacturing method thereof |
| CN107068897A (en) * | 2017-01-18 | 2017-08-18 | 京东方科技集团股份有限公司 | One kind top light emitting-type OLED display panel and display device |
| CN108305891A (en) * | 2018-02-12 | 2018-07-20 | 上海天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| WO2019010986A1 (en) * | 2017-07-11 | 2019-01-17 | 京东方科技集团股份有限公司 | Display panel, manufacturing method therefor, and display device |
| 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 |
| CN109841651A (en) * | 2017-11-24 | 2019-06-04 | 三星显示有限公司 | Display device and its manufacturing method |
| CN110085751A (en) * | 2019-04-19 | 2019-08-02 | 武汉华星光电半导体显示技术有限公司 | Oled device with and forming method thereof |
| CN110323349A (en) * | 2019-07-01 | 2019-10-11 | 昆山国显光电有限公司 | A kind of organic light emitting display panel and organic light-emitting display device |
| CN110459556A (en) * | 2018-05-08 | 2019-11-15 | 乐金显示有限公司 | Luminous display unit |
| 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 |
| WO2022246694A1 (en) * | 2021-05-26 | 2022-12-01 | 京东方科技集团股份有限公司 | Display substrate, preparation method, and display device |
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| CN105826356A (en) * | 2016-05-04 | 2016-08-03 | Tcl集团股份有限公司 | Display panel with high aperture ratio and manufacturing method |
| 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 |
| CN106024807A (en) * | 2016-06-07 | 2016-10-12 | 上海天马有机发光显示技术有限公司 | Display panel 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 |
| CN107068897A (en) * | 2017-01-18 | 2017-08-18 | 京东方科技集团股份有限公司 | One kind top light emitting-type OLED display panel and display device |
| 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 |
| WO2019010986A1 (en) * | 2017-07-11 | 2019-01-17 | 京东方科技集团股份有限公司 | Display panel, manufacturing method therefor, and display device |
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| CN109841651A (en) * | 2017-11-24 | 2019-06-04 | 三星显示有限公司 | Display device and its manufacturing method |
| CN108305891A (en) * | 2018-02-12 | 2018-07-20 | 上海天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN110459556A (en) * | 2018-05-08 | 2019-11-15 | 乐金显示有限公司 | Luminous display unit |
| WO2020118841A1 (en) * | 2018-12-10 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Oled display device |
| 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 |
| US11139352B1 (en) | 2018-12-10 | 2021-10-05 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Organic light emitting diode display device |
| CN110085751A (en) * | 2019-04-19 | 2019-08-02 | 武汉华星光电半导体显示技术有限公司 | Oled device with and forming method thereof |
| 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 |
| CN110323349A (en) * | 2019-07-01 | 2019-10-11 | 昆山国显光电有限公司 | A kind of organic light emitting display panel and organic light-emitting display device |
| 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 |
| WO2022246694A1 (en) * | 2021-05-26 | 2022-12-01 | 京东方科技集团股份有限公司 | Display substrate, preparation method, 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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Denomination of invention: Organic light emitting display device and its manufacturing method Effective date of registration: 20201221 Granted publication date: 20170606 Pledgee: Xin Xin Finance Leasing Co.,Ltd. Pledgor: KunShan Go-Visionox Opto-Electronics Co.,Ltd. Registration number: Y2020980009652 |