CN203812920U - OLED light emitting device and display device - Google Patents
OLED light emitting device and display device Download PDFInfo
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- CN203812920U CN203812920U CN201420232949.XU CN201420232949U CN203812920U CN 203812920 U CN203812920 U CN 203812920U CN 201420232949 U CN201420232949 U CN 201420232949U CN 203812920 U CN203812920 U CN 203812920U
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Abstract
The embodiment of the utility model provides an OLED light emitting device and a display device, which relate to the field of display technology, can reduce light lost in a waveguide mode, and can improve the output efficiency of light. The OLED light emitting device comprises a substrate, a first electrode, an organic material function layer and a transparent or semitransparent second electrode which are sequentially arranged on the substrate, and a covering layer which is arranged on one side, far away from the substrate, of a second electrode, wherein the surface, far away from the substrate, of the covering layer is not smooth. The utility model discloses the OLED light emitting device and the display device which are used for reducing the light lost in a waveguide mode and improving the output efficiency of light, and further discloses the manufacturing method of the OLED light emitting device.
Description
Technical field
The utility model relates to Display Technique field, relates in particular to a kind of OLED luminescent device and display unit.
Background technology
The advantages such as Organic Light Emitting Diode (Organic Light Emitting Diode is called for short OLED) is a kind of electroluminescent device of organic thin film, and it has, and preparation technology is simple, cost is low, easily form flexible structure, visual angle is wide; Therefore, utilize the Display Technique of Organic Light Emitting Diode to become a kind of important Display Technique.
At present, the light output efficiency of OLED is lower, in general, only having little luminous energy can see through glass substrate shines in air, one reasons is that organic refractive index is higher than glass and air, the refractive index of glass is again higher than air, the light that luminescent layer sends is in glass and air transmitting, there is total reflection phenomenon in capital, being light there is waveguide phenomenon and is closed in organic film and glass substrate inside can not shine in air at organic layer and inside glass, and this light being closed is called the light of waveguide mode.
Utility model content
Embodiment of the present utility model provides a kind of OLED luminescent device and display unit, can reduce the light of loss in waveguide mode, improves the delivery efficiency of light.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
On the one hand, a kind of OLED luminescent device is provided, comprise: underlay substrate, is successively set on the first electrode on described underlay substrate, organic material functional layer, transparent or semitransparent the second electrode, and is positioned at the cover layer of described the second electrode away from described underlay substrate one side; Wherein, described cover layer is away from the surperficial non-flat forms of described underlay substrate.
Preferably, described cover layer comprises polymorphic organic layer.
Further preferred, described cover layer comprises the first little molecule organic layer and the described polymorphic organic layer that is positioned at described the first little molecule organic layer top, and the difference of the refraction coefficient of described the first little molecule organic layer and described polymorphic organic layer is less than 0.1.
Preferably, described cover layer comprises the second little molecule organic layer and is positioned at described the second little molecule organic layer top and has the 3rd little molecule organic layer of non-flat forms upper surface, and the difference of the refraction coefficient of described the second little molecule organic layer and described the 3rd little molecule organic layer is less than 0.1;
Wherein, the upper surface of the non-flat forms of described the 3rd little molecule organic layer carries out obtaining after crystallization to the 3rd little molecule organic material in the 3rd little molecule organic layer; In described the second little molecule organic layer, the vitrification point of the second little molecule organic material is greater than the vitrification point of the 3rd little molecule organic material in described the 3rd little molecule organic layer.
Based on above-mentioned, preferred, described the first electrode comprises opaque metal layer, and described the second electrode comprises semi-transparent metal layer.
On the other hand, provide a kind of display unit, comprise above-mentioned OLED luminescent device.
Preferably, described display unit also comprises the thin-film transistor being arranged between underlay substrate and the first electrode of described OLED luminescent device.
Further preferred, described the first electrode is electrically connected with the drain electrode of described thin-film transistor.
The utility model embodiment provides a kind of OLED luminescent device and display unit, this OLED luminescent device comprises: underlay substrate, be successively set on the first electrode on described underlay substrate, organic material functional layer, transparent or semitransparent the second electrode, and be positioned at the cover layer of described the second electrode away from described underlay substrate one side; Wherein, described cover layer is away from the surperficial non-flat forms of described underlay substrate.
Owing to being positioned at the cover layer of described the second electrode top away from the surperficial non-flat forms of described underlay substrate one side, make the light sending from the luminescent layer of organic material functional layer in the time inciding cover layer, can change the refraction angle of its emergent light, like this, by changing from the refraction angle of the light of cover layer outgoing, can make it to glass and/or air transmitting time, reduce total reflection phenomenon, thereby can reduce the light of loss in waveguide mode, improve the delivery efficiency of light.In addition,, by selecting the tectal material of suitable conduct, can also regulate the transmitance of emergent light.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation one of a kind of OLED luminescent device that Fig. 1 provides for the utility model embodiment;
The structural representation two of a kind of OLED luminescent device that Fig. 2 provides for the utility model embodiment;
The structural representation three of a kind of OLED luminescent device that Fig. 3 provides for the utility model embodiment;
The structural representation of a kind of OLED display unit that Fig. 4 provides for the utility model embodiment;
A kind of process schematic diagram for preparing OLED luminescent device as shown in Figure 3 that Fig. 5 provides for the utility model embodiment.
Reference numeral:
10-luminescent device; 100-underlay substrate; 200-the first electrode; 300-organic material functional layer; 400-the second electrode; 500-cover layer; The little molecule organic layer of 501-first; 502-polymorphic organic layer; The little molecule organic layer of 503-second; The little molecule organic layer of 504-the 3rd; 600-thin-film transistor; 700-base plate for packaging.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of OLED luminescent device 10, as shown in Figure 1 to Figure 3, this OLED luminescent device 10 comprises: underlay substrate 100, be successively set on the first electrode 200 on described underlay substrate, organic material functional layer 300, transparent or semitransparent the second electrode 400, and be positioned at the cover layer 500 of described the second electrode 400 away from described underlay substrate 100 1 sides.Wherein, described cover layer 500 is away from the surperficial non-flat forms of described underlay substrate 100.
It should be noted that, the first, the material of described cover layer 500 is preferably the material of high permeability, and can be one deck structure or two-layer and above structure, specifically arranges according to actual conditions.
The second, the first electrode 200 can be negative electrode or anode, and the second electrode 400 can be male or female.If that is: the first electrode 200 is negative electrode, the second electrode 400 is anode; If the first electrode 200 is anode, the second electrode 400 is negative electrode.
For described organic material functional layer 300, it can at least comprise luminescent layer, inject on this basis the efficiency of luminescent layer in order to improve electronics and hole, described organic material functional layer 300 further can also comprise electron transfer layer, hole transmission layer and be arranged on negative electrode and described electron transfer layer between electron injecting layer, and be arranged on the hole injection layer between described hole transmission layer and anode.
Based on this, in the time that anode and negative electrode apply operating voltage, the electronics in hole and negative electrode in anode is all injected in described luminescent layer; Hole and electronics meet in described luminescent layer, and the two is combined with each other and forms electron-hole pair and give off energy; This energy sends with the form of light, is shown as the light of different colours, and penetrates uniformly from the both sides of described organic material functional layer 300 through the different light emitting molecules in described luminescent layer.
Wherein, described luminescent layer can comprise the light emitting molecule of ruddiness, green glow, blue light; Certainly, described luminescent layer also can only comprise the light emitting molecule of white light.
The 3rd, in the utility model embodiment, the material of described the first electrode 200 is not limited.
In the time that the material of described the first electrode 200 comprises opaque electric conducting material, because the light from described organic material functional layer 300 outgoing only penetrates from the second electrode 400 1 sides, therefore, can be called top emission type; In the time that the material of the first electrode 200 is transparent or semitransparent electric conducting material, because the light from described organic material functional layer 300 outgoing both can penetrate from the second electrode 400 1 sides, also can penetrate from the first electrode 200 1 sides, therefore can be called dual-side luminescent type.
Wherein, opaque electric conducting material can be for example the silver that thickness is relatively thick (Ag), and semi-transparent conductive material can be for example the silver that thickness is relatively thin.
The utility model embodiment provides a kind of OLED luminescent device 10, comprise: underlay substrate 100, be successively set on the first electrode 200 on described underlay substrate, organic material functional layer 300, transparent or semitransparent the second electrode 400, and be positioned at the cover layer 500 of described the second electrode away from described underlay substrate one side.Wherein, described cover layer 500 is away from the surperficial non-flat forms of described underlay substrate 100.
Owing to being positioned at the cover layer 500 of described the second electrode 400 tops away from the surperficial non-flat forms of described underlay substrate 100 1 sides, make the light sending from the luminescent layer of organic material functional layer 300 in the time inciding cover layer 500, can change the refraction angle of its emergent light, like this, by changing from the refraction angle of the light of cover layer 500 outgoing, can make it to glass and/or air transmitting time, reduce total reflection phenomenon, thereby can reduce the light of loss in waveguide mode, improve the delivery efficiency of light.In addition,, by selecting the suitable material as cover layer 500, can also regulate the transmitance of emergent light.
Preferably, described the first electrode 200 comprises opaque metal layer, and described the second electrode 400 comprises semi-transparent metal layer.
Because opaque the first electrode 200, organic material functional layer 300, translucent the second electrode 400 can form a microcavity, therefore, can utilize the interference effect (microcavity effect) of light in microcavity further to improve the delivery efficiency of light.On this basis, described the first electrode 200 is set to opaque electrode, can increases the reflection of light between the first electrode 200 and the second electrode 400, thereby can further utilize the interference effect of light in microcavity to improve the delivery efficiency of light.
Preferably, described cover layer 500 comprises polymorphic organic layer.
Wherein, polymorphic organic material, in the time forming rete, due to the particularity of material, just can have the shape of non-flat forms on the surface of rete.
Here, described cover layer 500 can be only polymorphic organic layer, or can be also except comprising polymorphic organic layer, also comprise other retes, not limiting at this.
Further preferred, as shown in Figure 2, described cover layer 500 comprises the first little molecule organic layer 501 and is positioned at the layer polymorphic organic layer 502 of described the first little molecule organic layer top, and the difference of the refraction coefficient of described the first little molecule organic layer 501 and described polymorphic organic layer 502 is less than 0.1.
Here, the material of described the first little molecule organic layer 501 is little molecule organic material, for example, can be: TPTE (molecular formula is:
tPPE (molecular formula is:
deng.
The material of described polymorphic organic layer 502 is polymorphic organic material, for example, can be the polymorphic organic material NET61 of Novaled company production.
Due to before evaporation polymorphic organic layer 502, first evaporation the first little molecule organic layer 501, therefore, in the time that the material of described the second electrode 400 is metal material, just can prevent evaporation polymorphic organic layer 502 time, after material crystallization, crystalline structure penetrates compared with the second electrode 400 of thin metal material the second electrode 400 is caused to damage.
It should be noted that, first, in the time selecting the material of the first little molecule organic layer 501 and polymorphic organic layer 502, should choose the akin material of refraction coefficient as far as possible, can avoid like this, because material selects the improper light that causes when two-layer through this, total reflection effect occurring and making light output efficiency step-down at the first little molecule organic layer 501 and polymorphic organic layer 502 interfaces.
The second, for above-mentioned the first little molecule organic layer 501, also can adopt inorganic layer to replace, in the case, need to select sputter direction to carry out the deposition of rete, do not repeat them here.
The 3rd, described the first little molecule organic layer 501 can be one deck can be also two-layer and more than, described polymorphic organic layer 502 can be one deck can be also two-layer and more than, do not limit at this.In addition, every described cover layer 500 that comprises polymorphic organic layer 502 all belongs to this clearly demarcated protection range.
Preferably, as shown in Figure 3, described cover layer 500 comprises the second little molecule organic layer 503 and is positioned at described the second little molecule organic layer top and has the 3rd little molecule organic layer 504 of non-flat forms upper surface, and the difference of the refraction coefficient of described the second little molecule organic layer 503 and described the 3rd little molecule organic layer 504 is less than 0.1.
Wherein, the upper surface of the non-flat forms of described the 3rd little molecule organic layer 504 carries out obtaining after crystallization to the 3rd little molecule organic material in the 3rd little molecule organic layer; In described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material is greater than the vitrification point of the 3rd little molecule organic material in described the 3rd little molecule organic layer 504.
In described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material can be for being greater than 120 DEG C, and material can be for example TPTE, TPPE etc.
In described the 3rd little molecule organic layer 504, the vitrification point of the 3rd little molecule organic material can be 60～100 DEG C, material for example for NPB (molecular formula is:
tPD (molecular formula is:
deng.
It should be noted that, first, be plane on the surface of the second little molecule organic layer 503, thereon after the little molecule organic material of evaporation the 3rd, the 3rd little molecule organic layer 504 its surfaces that form are also plane, only the 3rd little molecule organic layer 504 is being heated, and heating-up temperature is reached after the vitrification point of the 3rd little molecule organic material, because the 3rd little molecule organic material crystallization makes the surface of described the 3rd little molecule organic layer 504 have the shape of non-flat forms.
Second, the 3rd of described the 3rd little molecule organic layer 504 the little molecule organic material is carried out to heating crystallization, only to make the 3rd little molecule organic material be converted to glassy state and carry out crystallization to a certain degree by amorphous, material itself does not change, therefore no matter be before crystallization or after crystallization, in the utility model embodiment, be all called the 3rd little molecule organic layer 504.
The 3rd, described the second little molecule organic layer 503 can be one deck can be also two-layer and more than, described the 3rd little molecule organic layer 504 can be one deck can be also two-layer and more than, do not limit at this.
Like this, on the one hand, by the temperature value of selecting the vitrification point of the 3rd little molecule organic material in a little higher than the 3rd little molecule organic layer 504, the 3rd little molecule organic material in described the 3rd little molecule organic layer 504 is heated, just can make the 3rd little molecule organic material crystallization, thereby make described the 3rd little molecule organic layer 504 there is the upper surface of non-flat forms.
On the other hand, due to the existence of the second little molecule organic layer 503, can avoid the 3rd little molecule organic material crystallization in the 3rd little molecule organic layer 504 time, damage the second electrode 400 of the metal material that is positioned at its below.
Here, damage the second electrode 400 of the metal material that is positioned at its below for fear of making the 3rd little molecule organic material crystallization in the 3rd little molecule organic layer 504, in described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material will be higher than the vitrification point of the 3rd little molecule organic material in the 3rd little molecule organic layer 504, and described the 3rd little molecule organic layer 504 is heated in the process that makes it crystallization, ensure that the selection of this heating-up temperature is less than the vitrification point of the second little molecule organic material in the second little molecule organic layer 503.
In addition, for fear of crystallization process, device is caused to other influences, forming after described the 3rd little molecule organic layer 504, should first encapsulate, and then make the 3rd little molecule organic material crystallization in described the 3rd little molecule organic layer 504 by mode of heating.
The utility model embodiment also provides a kind of display unit, comprises above-mentioned OLED luminescent device 10.
Herein, described OLED luminescent device can be suitable for passive matrix display unit, also can be suitable for active matrix display devices, does not limit at this.
The utility model embodiment provides a kind of display unit, comprises above-mentioned OLED luminescent device 10.Owing to being positioned at the cover layer 500 of described the second electrode 400 tops away from the surperficial non-flat forms of described underlay substrate 100 1 sides, make the light sending from the luminescent layer of organic material functional layer 300 in the time inciding cover layer 500, can change the refraction angle of its emergent light, like this, by changing from the refraction angle of the light of cover layer 500 outgoing, can make it to glass and/or air transmitting time, reduce total reflection phenomenon, thereby can reduce the light of loss in waveguide mode, improve the delivery efficiency of light.In addition,, by selecting the suitable material as cover layer 500, can also regulate the transmitance of emergent light.
Consider that passive matrix has the one side of its deficiency while being applied to large scale display unit, preferably, the display unit that the utility model embodiment provides is active matrix type display,, as shown in Figure 4, described display unit also comprises the thin-film transistor 600 between the first electrode 200 that is arranged on underlay substrate 100 and described OLED luminescent device.
Wherein, described thin-film transistor 600 comprises grid, gate insulation layer, semiconductor active layer, source electrode and drain electrode; Described drain electrode is connected with one of them electrode in the first electrode 200 and the second electrode 400.
It should be noted that, in the utility model embodiment, the structure of described thin-film transistor 600 is not limited, can be top gate type, can be also bottom gate type.
Further, make drain electrode be electrically connected with described the second electrode 400 if consider, certainly will need described the second electrode 400 through being positioned at organic material functional layer 300 and the first electrode 200, come to be electrically connected with drain electrode, may cause the second electrode 400 and the first electrode 200 to be short-circuited so on the one hand, due to the particularity of organic material functional layer 300 materials, preparation technology is relatively also complicated on the other hand.Based on this, the utility model embodiment is preferably, and the drain electrode of described thin-film transistor 600 is electrically connected with described the first electrode 200.
Here if using the first electrode 200 as anode, be constant as the voltage of the second electrode 50 of negative electrode; If using the first electrode 200 as negative electrode, be constant as the voltage of the second electrode 50 of anode.
Certainly, as shown in Figure 4, for described OLED display unit, also should comprise the base plate for packaging 700 covering on described cover layer 500.
The utility model embodiment also provides a kind of preparation method of OLED luminescent device, shown in figure 1, the method comprises: on underlay substrate 100, form successively the first electrode 200, organic material functional layer 300, transparent or semitransparent the second electrode 400, and be positioned at the cover layer 500 of described the second electrode 400 away from described underlay substrate 100 1 sides; Wherein, described cover layer 500 is away from the surperficial non-flat forms of described underlay substrate 100.
Owing to being positioned at the cover layer 500 of described the second electrode 400 tops away from the surperficial non-flat forms of described underlay substrate 100 1 sides, make the light sending from the luminescent layer of organic material functional layer 300 in the time inciding cover layer 500, can change the refraction angle of its emergent light, like this, by changing from the refraction angle of the light of cover layer 500 outgoing, can make it to glass and/or air transmitting time, reduce total reflection phenomenon, thereby can reduce the light of loss in waveguide mode, improve the delivery efficiency of light.In addition,, by selecting the suitable material as cover layer 500, can also regulate the transmitance of emergent light.
Preferably, described the first electrode 200 comprises opaque metal layer, and described the second electrode 400 comprises semi-transparent metal layer.
Because opaque the first electrode 200, organic material functional layer 300, translucent the second electrode 400 can form a microcavity, therefore, can utilize the interference effect (microcavity effect) of light in microcavity further to improve the delivery efficiency of light.On this basis, described the first electrode 200 is set to opaque electrode, can increases the reflection of light between the first electrode 200 and the second electrode 400, thereby can further utilize the interference effect of light in microcavity to improve the delivery efficiency of light.
Optionally, form described cover layer 500, specifically can realize in the following manner:
First kind of way: because polymorphic organic material is forming when rete, the particularity of its material, just can have the shape of non-flat forms on the surface of rete, therefore, can realize by polymorphic organic layer 502.
Based on this, can be on the substrate that is formed with described the second electrode 400 evaporation polymorphic organic layer 502.
On this basis, preferably, forming described cover layer 500 specifically can comprise: shown in figure 2, in vacuum chamber, the little molecule organic layer 501 of evaporation first and polymorphic organic layer 502 successively on the substrate that is formed with described the second electrode 400, and the difference of the refraction coefficient of organic 502 layers of described the first little molecule organic layer 501 and described polymorphic is less than 0.1.
The material of described the first little molecule organic layer 501 is little molecule organic material, for example, can be TPTE, TPPE etc.The material of described polymorphic organic layer 502 is polymorphic organic material, for example, can be the polymorphic organic material NET61 of Novaled company production.
The second way: shown in figure 5, in vacuum chamber, the little molecule organic layer 503 of evaporation second and the 3rd little molecule organic layer 504 successively on the substrate that is formed with described the second electrode 400; Wherein, in described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material is greater than the vitrification point of the 3rd little molecule organic material in described the 3rd little molecule organic layer 504.
On this basis, above-mentioned substrate is encapsulated, then, according to the vitrification point of described the 3rd little molecule organic material, described the 3rd little molecule organic layer 504 is heated, make the 3rd little molecule organic material crystallization in described the 3rd little molecule organic layer 504.
Here, in described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material can be for being greater than 120 DEG C, and material can be for example TPTE, TPPE etc.
In described the 3rd little molecule organic layer 504, the vitrification point of the 3rd little molecule organic material can be 60～100 DEG C, and material is for example NPB, TPD etc.
It should be noted that, first, damage the second electrode 400 of the metal material that is positioned at its below for fear of making the 3rd little molecule organic material crystallization in the 3rd little molecule organic layer 504, in described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material will be higher than the vitrification point of the 3rd little molecule organic material in the 3rd little molecule organic layer 504, and described the 3rd little molecule organic layer 504 is heated in the process that makes it crystallization, ensure that the selection of this heating-up temperature is less than the vitrification point of the second little molecule organic material in the second little molecule organic layer 503.
The second, for fear of crystallization process, device is caused to other influences, forming after described the 3rd little molecule organic layer 504, should first encapsulate, and then make the 3rd little molecule organic material crystallization in described the 3rd little molecule organic layer 504 by mode of heating.
The utility model embodiment also provides a kind of preparation method of OLED display unit, shown in figure 4, the method comprises: on underlay substrate 100, form successively thin-film transistor 600, the first electrode 200, organic material functional layer 300, transparent or semitransparent the second electrode 400, and be positioned at the cover layer 500 of described the second electrode 400 away from described underlay substrate 100 1 sides; Wherein, described cover layer 500 is away from the surperficial non-flat forms of described underlay substrate 100.
Wherein, described thin-film transistor 600 comprises grid, gate insulation layer, semiconductor active layer, source electrode and drain electrode, its can be bottom gate type, also can be for top gate type; Described drain electrode is connected with one of them electrode in described the first electrode 200 and the second electrode 400.
Further, the drain electrode of described thin-film transistor 600 is electrically connected with described the first electrode 200.Like this, because the first electrode 200 is near described thin-film transistor 600, therefore can simplify preparation technology.
Certainly, as shown in Figure 4, described method also comprises the base plate for packaging 700 that forms the described cover layer 500 of covering.
Based on foregoing description, form described cover layer 500, specifically can realize by following two kinds of modes:
First kind of way: evaporation polymorphic organic layer 502 on the substrate that is formed with described the second electrode 400.
On this basis, preferably, forming described cover layer 500 specifically can comprise: shown in figure 2, in vacuum chamber, the little molecule organic layer 501 of evaporation first and polymorphic organic layer 502 successively on the substrate that is formed with described the second electrode 400, and the difference of the refraction coefficient of organic 502 layers of described the first little molecule organic layer 501 and described polymorphic is less than 0.1.
The second way: shown in figure 5, in vacuum chamber, the little molecule organic layer 503 of evaporation second and the 3rd little molecule organic layer 504 successively on the substrate that is formed with described the second electrode 400; Wherein, in described the second little molecule organic layer 503, the vitrification point of the second little molecule organic material is greater than the vitrification point of the 3rd little molecule organic material in described the 3rd little molecule organic layer 504.
On this basis, above-mentioned substrate is encapsulated, then, according to the vitrification point of described the 3rd little molecule organic material, described the 3rd little molecule organic layer 504 is heated, make the 3rd little molecule organic material crystallization in described the 3rd little molecule organic layer 504.
It should be noted that, the utility model embodiment also can adopt the prism film that attaches microlens array film or polyimides (PI) material above described the second electrode 400 to substitute above-mentioned cover layer 500, does not repeat them here.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (8)
1. an OLED luminescent device, is characterized in that, comprising:
Underlay substrate, is successively set on the first electrode on described underlay substrate, organic material functional layer, transparent or semitransparent the second electrode, and is positioned at the cover layer of described the second electrode away from described underlay substrate one side;
Wherein, described cover layer is away from the surperficial non-flat forms of described underlay substrate.
2. OLED luminescent device according to claim 1, is characterized in that, described cover layer comprises polymorphic organic layer.
3. OLED luminescent device according to claim 2, it is characterized in that, described cover layer comprises the first little molecule organic layer and the described polymorphic organic layer that is positioned at described the first little molecule organic layer top, and the difference of the refraction coefficient of described the first little molecule organic layer and described polymorphic organic layer is less than 0.1.
4. OLED luminescent device according to claim 1, it is characterized in that, described cover layer comprises the second little molecule organic layer and is positioned at described the second little molecule organic layer top and has the 3rd little molecule organic layer of non-flat forms upper surface, and the difference of the refraction coefficient of described the second little molecule organic layer and described the 3rd little molecule organic layer is less than 0.1;
Wherein, the upper surface of the non-flat forms of described the 3rd little molecule organic layer carries out obtaining after crystallization to the 3rd little molecule organic material in the 3rd little molecule organic layer; In described the second little molecule organic layer, the vitrification point of the second little molecule organic material is greater than the vitrification point of the 3rd little molecule organic material in described the 3rd little molecule organic layer.
5. according to the OLED luminescent device described in claim 1 to 4 any one, it is characterized in that, described the first electrode comprises opaque metal layer, and described the second electrode comprises semi-transparent metal layer.
6. a display unit, is characterized in that, comprises the OLED luminescent device described in claim 1 to 5 any one.
7. display unit according to claim 6, is characterized in that, also comprises the thin-film transistor being arranged between underlay substrate and the first electrode of described OLED luminescent device.
8. display unit according to claim 7, is characterized in that, described the first electrode is electrically connected with the drain electrode of described thin-film transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232949.XU CN203812920U (en) | 2014-05-08 | 2014-05-08 | OLED light emitting device and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232949.XU CN203812920U (en) | 2014-05-08 | 2014-05-08 | OLED light emitting device and display device |
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| Publication Number | Publication Date |
|---|---|
| CN203812920U true CN203812920U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420232949.XU Withdrawn - After Issue CN203812920U (en) | 2014-05-08 | 2014-05-08 | OLED light emitting device and display device |
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| CN (1) | CN203812920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972415A (en) * | 2014-05-08 | 2014-08-06 | 京东方科技集团股份有限公司 | OLED light-emitting device, manufacturing method thereof and display device |
-
2014
- 2014-05-08 CN CN201420232949.XU patent/CN203812920U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972415A (en) * | 2014-05-08 | 2014-08-06 | 京东方科技集团股份有限公司 | OLED light-emitting device, manufacturing method thereof and display device |
| WO2015169022A1 (en) * | 2014-05-08 | 2015-11-12 | 京东方科技集团股份有限公司 | Oled light-emitting device, preparation method therefor and display device |
| US9818810B2 (en) | 2014-05-08 | 2017-11-14 | Boe Technology Group Co., Ltd. | OLED and fabrication method thereof, and display apparatus |
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