CN1549658A - Organic light-emitting display element - Google Patents
Organic light-emitting display element Download PDFInfo
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- CN1549658A CN1549658A CNA031236898A CN03123689A CN1549658A CN 1549658 A CN1549658 A CN 1549658A CN A031236898 A CNA031236898 A CN A031236898A CN 03123689 A CN03123689 A CN 03123689A CN 1549658 A CN1549658 A CN 1549658A
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Abstract
A display component comprises a base plate, a positive electrode layer, an organic lightening layer, a negative electrode layer and a compensation layer. The positive electrode layer is set on base plate, organic lightening layer is set on positive electrode layer. The refractive index of organic lightening layer is decreased by following with increase of light wavelength generated by the layer. The negative electrode is set on organic lightening layer. In addition, compensation layer is set on another side of base plate as its refractive index is increased by following with increase of light wavelength generated by organic lightening layer.
Description
Technical field
The present invention relates to the organic illuminated display element in the semiconductor device of a kind of electricity essential electronic element field, particularly relate to a kind of compensate film that disposes, can effectively solve the problem that the refractive index of organic luminous layer in the prior art can reduce with the increase of the optical wavelength that organic luminous layer produced by the layer of compensation effect, can reduce the color offset phenomenon of organic light emitting display when scope with great visual angle, thereby be suitable for practical organic illuminated display element more.
Background technology
Organic light emitting display is compared to LCD, because it does not need additional configuration one backlight again, and still with the frivolous advantage of LCD, comes into one's own gradually on market in recent years.The principle of luminosity of organic light emitting display, be that extra electric field is acted on an organic luminous layer (organicemitting layer, EML) in, the type of action of this extra electric field is electronics injection/transport layer (the electron injecting/transporting layer that sees through between cathode layer and the anode layer, EIL/ETL) with electric hole injection/transport layer (hole injecting/transporting layer, HIL/HTL) electronics and electric hole are sent to carry out combination in the organic luminous layer, the energy that this combination produced can make the chemical substance in the organic luminous layer be excited to the excitation state (excited state) on high energy rank from the ground state (ground state) on script low energy rank, present a unsure state owing to be in the material of excitation state, therefore can unnecessary energy be disengaged by the form of light, and finish a luminous mechanism.
Seeing also shown in Figure 1ly, is a kind of generalized section of existing known organic illuminated display element (organiclightly emitting diode device, OLED device).This existing organic illuminated display element comprises one first substrate 100, an anode layer 102, an organic luminous layer 108 and a cathode layer 114.Wherein, anode layer 102 is to cover first substrate, 100 tops, and organic luminous layer 108 is to be configured in anode layer 102 tops, and cathode layer 114 is configured on the organic luminous layer 108.In addition, between anode layer 102 and organic luminous layer 108, can also dispose an electric hole implanted layer 104 and one electric hole transport layer 106, this electricity hole implanted layer 104 is the tops that are positioned at anode layer 102, should electricity hole transport layer 106 then between electric hole implanted layer 104 and organic luminous layer 108.In addition, can also dispose an electron transfer layer 110 and electron injecting layer 112 between organic luminous layer 108 and the cathode layer 114 in regular turn.
When several retes of light transmission that organic luminescent layer produced and when entering atmosphere, light can produce refraction, this light can with a normal line vector shape at an angle, this angle is referred to as refraction angle (angle ofrefraction), when its wavelength of light (wavelength) that organic luminescent layer produced is long more, the angle of its refraction can be more little, and its refractive index (index of refraction) is also more little, that is to say, when long wavelength's ruddiness when organic luminous layer enters atmosphere, its refractive index can be less than short wavelength's blue light.In addition, because this display element belongs to two different media with atmosphere, no matter be after the light of which kind of wavelength enters atmosphere, refraction effect takes place in the capital, therefore, the being seen color of human eye certainly will be slightly variant with the color that element itself is manifested, and this difference is called colour cast.When the human eye straight watching display, this color offset phenomenon is also not obvious, is positioned at the display both sides and work as human eye, and this moment, the visual angle was bigger, and color offset phenomenon can be comparatively serious.So organic illuminated display element is the problem that the product processing procedure is concerned about at the color offset phenomenon of scope with great visual angle.This shows that above-mentioned existing organic illuminated display element still has defective, and demands urgently further being improved.
In order to solve the problem that organic illuminated display element exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing organic illuminated display element exists, the inventor is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Main purpose of the present invention is, overcome the defective that above-mentioned existing organic illuminated display element exists, and provide a kind of organic illuminated display element of new structure, technical problem underlying to be solved is to make it can reduce the color offset phenomenon of organic light emitting display when scope with great visual angle, thereby is suitable for practicality more.
Another object of the present invention is to, a kind of organic illuminated display element is provided, technical problem to be solved is that it need not bought more under the situation of other expensive device, and only needs the compensating action by layer of compensation, just can improve existing known product and the existing problem of method.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technical scheme to realize.According to a kind of organic illuminated display element that the present invention proposes, it comprises: an anode layer is configured on the surface of one first substrate; One organic luminous layer is configured on this anode layer, and wherein the refractive index of this organic luminous layer can reduce with the increase of the optical wavelength that this organic luminous layer produced; One cathode layer is configured on this organic luminous layer; And one first layer of compensation, be configured on another surface of this first substrate, wherein the refractive index of this first layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid organic illuminated display element more includes one second substrate on the wherein said cathode layer.
Aforesaid organic illuminated display element more comprises on wherein said second substrate and disposes one second layer of compensation, and the refractive index of this second layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
Aforesaid organic illuminated display element wherein more comprises between this anode layer and this organic luminous layer and disposes an electric hole transport layer.
Aforesaid organic illuminated display element wherein more comprises between this anode layer and this organic luminous layer and disposes an electric hole implanted layer.
Aforesaid organic illuminated display element wherein more comprises between this cathode layer and this organic luminous layer and disposes an electron transfer layer.
Aforesaid organic illuminated display element wherein more comprises between this cathode layer and this organic luminous layer and disposes an electron injecting layer.
Purpose of the present invention and solve its technical problem underlying and also realize by the following technical solutions.According to a kind of organic illuminated display element that the present invention proposes, it comprises: an anode layer is configured on the surface of one first substrate; One organic luminous layer is configured on this anode layer, and wherein the refractive index of this organic luminous layer can reduce with the increase of the optical wavelength that this organic luminous layer produced; One cathode layer is configured on this organic luminous layer; One second substrate is configured on this cathode layer; And one first layer of compensation, be configured on this second substrate, wherein the refractive index of this first layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid organic illuminated display element more comprises on another surface on wherein said first substrate and disposes one second layer of compensation, and the refractive index of this second layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
Aforesaid organic illuminated display element wherein more comprises between this anode layer and this organic luminous layer and disposes an electric hole transport layer.
Aforesaid organic illuminated display element wherein more comprises between this anode layer and this organic luminous layer and disposes an electric hole implanted layer.
Aforesaid organic illuminated display element wherein more comprises between this cathode layer and this organic luminous layer and disposes an electron transfer layer.
Aforesaid organic illuminated display element wherein more comprises between this cathode layer and this organic luminous layer and disposes an electron injecting layer.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the present invention proposes a kind of organic illuminated display element, and this organic illuminated display element comprises one first substrate, an anode layer, an organic luminous layer, a cathode layer and a layer of compensation.Wherein, anode layer is to be configured on first substrate, and organic luminous layer is to cover the anode layer top, and cathode layer is to cover the organic luminous layer top.In addition, layer of compensation is positioned on the another side of first substrate.Wherein between this anode layer and organic luminous layer, can also dispose an electric hole implanted layer and an electric hole transport layer.In addition, between organic luminous layer and cathode layer, can also dispose an electron transfer layer and an electron injecting layer.In addition, the layer of compensation that another side disposed at first substrate, its refractive index then can be along with light wavelength that organic luminous layer produced increases and increases, and so can make the compensation of the light transmission layer of compensation that refractive index is big originally and the existing existing color offset phenomenon of known techniques is improved.
In the present invention, above cathode layer, can also dispose one second substrate and another layer of compensation, and become element with double-deck layer of compensation.Similarly, the refractive index of this layer of compensation can increase along with the increase of the optical wavelength that organic luminous layer produced, and therefore, can also solve the existing existing color offset phenomenon of known techniques.
The present invention reintroduces a kind of organic illuminated display element again, and this organic illuminated display element is to comprise one first substrate, an anode layer, an organic luminous layer, a cathode layer, second substrate and a layer of compensation.Wherein, anode layer is to be configured on first substrate, and organic luminous layer is to cover on the anode layer, and cathode layer is to be configured on the organic luminous layer.In addition, be configuration second substrate and compensate film above cathode layer.Wherein, the refractive index of layer of compensation increases along with the increase of the optical wavelength that organic luminous layer produced, and therefore can solve the problem that existing known techniques exists.In addition, between anode layer and organic luminous layer, can also dispose an electric hole implanted layer and an electric hole transport layer.In addition, between cathode layer and organic luminous layer, can also dispose an electron transfer layer and an electron injecting layer.
By said structure, the present invention disposes layer of compensation on organic illuminated display element, can reduce organic illuminated display element existing color offset phenomenon when scope with great visual angle.
In addition, the present invention just can improve the phenomenon of colour cast at organic illuminated display element structure additional configuration one layer of compensation, and meaning promptly only need add layer of compensation in processing procedure configuration step gets final product, therefore, need not buy more other expensive equipment just can make organic illuminated display element obtain the colour cast compensation.
In sum, the organic illuminated display element of special construction of the present invention has a substrate, an anode layer, an organic luminous layer, a cathode layer and a layer of compensation.Wherein, anode layer is disposed on the substrate, and organic luminous layer is configured on the anode layer, and the refractive index of organic luminous layer can reduce with the increase of the optical wavelength that organic luminous layer produced, and cathode layer is to be configured on the organic luminous layer.In addition, layer of compensation is the another side that is configured in substrate, and the refractive index of layer of compensation is to increase along with the increase of light wavelength that organic luminous layer produces.Because organic illuminated display element of the present invention is to dispose compensate film, therefore, just can effectively solve the problem that the refractive index of organic luminous layer in the existing known techniques can reduce with the increase of the optical wavelength that organic luminous layer produced by the effect of layer of compensation.
The present invention can reduce the color offset phenomenon of organic light emitting display when scope with great visual angle, thereby is suitable for practicality more; It need not bought more under the situation of other expensive device in addition, only needs the compensating action by layer of compensation, just can effectively improve existing known product and the existing problem of method.It has above-mentioned many advantages and practical value, and having there is no similar structural design in like product publishes or uses, no matter it structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is a kind of generalized section that has known organic illuminated display element now.
Fig. 2 is the generalized section of a kind of organic illuminated display element of a preferred embodiment of the present invention.
Fig. 3 is the generalized section of a kind of organic illuminated display element of another preferred embodiment of the present invention.
Fig. 4 is the generalized section of a kind of organic illuminated display element of the another preferred embodiment of the present invention.
Fig. 5 is the graph of a relation of a kind of refractive index and optical wavelength.
104: electric hole implanted layer 106: electric hole transport layer
108: organic luminous layer 110: electron transfer layer
112: electron injecting layer 114: cathode layer
Substrate 118,120 in 116: the second: layer of compensation
400,402: relation curve
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of organic illuminated display element, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Seeing also shown in Figure 2ly, is the generalized section of a kind of organic illuminated display element of a preferred embodiment of the present invention.Organic illuminated display element of the present invention, it comprises one first substrate 100, an anode layer 102, an organic luminous layer 108, a cathode layer 114 and a layer of compensation 118; Wherein:
This anode layer 102 is to be configured on first substrate 100, and the material of first substrate 100 for example is plastic base or glass, and the material of anode layer 102 is such as being indium tin oxide (ITO) or indium-zinc oxide (IZO).In addition, this organic luminous layer 108 is to cover anode layer 102 tops, and cathode layer 114 is to be disposed on the organic luminous layer 108, and in addition, layer of compensation 118 is configured on the another side of first substrate 100.
The material of above-mentioned organic luminous layer 108, for example be that micromolecule is luminescent material or macromolecular luminescent material, and its refractive index of light that organic luminous layer 108 is produced can reduce along with the increase of optical wavelength, in other words, the long more light of wavelength enters to the atmosphere from organic luminous layer 108, its refractive index is more little, and for example the refractive index of ruddiness can be less than short wavelength's blue light.
The refractive index of layer of compensation 118 that is configured in the another side of first substrate 100 can increase along with the increase of the optical wavelength that organic luminous layer 108 produced.Seeing also shown in Figure 5ly, is the graph of a relation of a kind of refractive index and optical wavelength.In this graph of a relation, transverse axis is represented the light wavelength that organic luminous layer 108 is produced, and the longitudinal axis is then represented the refractive index of light by medium.When light enters atmosphere by each rete that does not dispose layer of compensation, its refractive index can reduce (relation curve 400) along with the increase of the optical wavelength that this organic luminous layer produced, and the refractive index of layer of compensation then can increase and increases (relation curve 402) along with light wavelength that organic luminous layer produced.Thus, by the effect of layer of compensation, just can make originally the big light transmission layer of compensation of refractive index and obtain a less refractive index, and the existing existing color offset phenomenon of known techniques can effectively be achieved a solution.
What deserves to be mentioned is, the layer of compensation that the present invention disposed, its thickness can be done suitable adjustment when the processing procedure according to the degree of colour cast, in other words, can select the suitable compensation layer thickness to solve the color offset phenomenon of different organic illuminated display elements.
Please continue to consult shown in Figure 2, in organic illuminated display element of the present invention, between anode layer 102 and organic luminous layer 108, more can dispose an electric hole implanted layer 104 and one electric hole transport layer 106 in regular turn, meaning is that electric hole implanted layer 104 is to be configured on the anode layer 102, and electric hole transport layer 106 is to be disposed between electric hole implanted layer 104 and the organic luminous layer 108.In addition, between organic luminous layer 108 and cathode layer 114, can dispose an electron transfer layer 110 and an electron injecting layer 112 in regular turn.
Seeing also shown in Figure 3ly, is the generalized section of a kind of organic illuminated display element of another preferred embodiment of the present invention.In another preferred embodiment of the present invention, be a kind of organic illuminated display element, as shown in Figure 3 with two-layer layer of compensation.In the present embodiment, the top of cathode layer 114 is to dispose one second substrate 116 and another layer of compensation 120, and the compensating action of the refractive index of 120 pairs of light of this layer of compensation is identical with the above-mentioned layer of compensation of carrying 118.Because component structure shown in Figure 3 is to dispose a layer of compensation respectively on two substrates, so it is the organic illuminated display element that has a double-deck layer of compensation for.
Seeing also shown in Figure 4ly, is the generalized section of a kind of organic illuminated display element of the another preferred embodiment of the present invention.In the another preferred embodiment of the present invention, be the organic illuminated display element that has the simple layer layer of compensation for another kind, as shown in Figure 4.In other words, the present invention is except the execution mode of configuration layer of compensation 118 on first substrate 100, and dispose respectively outside the layer of compensation (118 and 120) at first substrate 100 and second substrate, 116 both sides, also having another kind of configuration structure mode, is exactly only layer of compensation 120 to be covered on second substrate 116.Certainly, the another side that also can be chosen in first substrate 100 disposes another layer of compensation 118 again, so constitutes another kind of display element (as shown in Figure 3) with double-deck layer of compensation.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (13)
1, a kind of organic illuminated display element is characterized in that it comprises:
One anode layer is configured on the surface of one first substrate;
One organic luminous layer is configured on this anode layer, and wherein the refractive index of this organic luminous layer can reduce with the increase of the optical wavelength that this organic luminous layer produced;
One cathode layer is configured on this organic luminous layer; And
One first layer of compensation is configured on another surface of this first substrate, and wherein the refractive index of this first layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
2, organic illuminated display element according to claim 1 is characterized in that more including on the wherein said cathode layer one second substrate.
3, organic illuminated display element according to claim 2, it is characterized in that more comprising on wherein said second substrate and dispose one second layer of compensation that the refractive index of this second layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
4, organic illuminated display element according to claim 1 is characterized in that wherein more comprising between this anode layer and this organic luminous layer and disposes an electric hole transport layer.
5, organic illuminated display element according to claim 1 is characterized in that wherein more comprising between this anode layer and this organic luminous layer and disposes an electric hole implanted layer.
6, organic illuminated display element according to claim 1 is characterized in that wherein more comprising between this cathode layer and this organic luminous layer and disposes an electron transfer layer.
7, organic illuminated display element according to claim 1 is characterized in that wherein more comprising between this cathode layer and this organic luminous layer and disposes an electron injecting layer.
8, a kind of organic illuminated display element is characterized in that it comprises:
One anode layer is configured on the surface of one first substrate;
One organic luminous layer is configured on this anode layer, and wherein the refractive index of this organic luminous layer can reduce with the increase of the optical wavelength that this organic luminous layer produced;
One cathode layer is configured on this organic luminous layer;
One second substrate is configured on this cathode layer; And
One first layer of compensation is configured on this second substrate, and wherein the refractive index of this first layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
9, organic illuminated display element according to claim 8, it is characterized in that more comprising on another surface on wherein said first substrate and dispose one second layer of compensation, and the refractive index of this second layer of compensation is the increase of the optical wavelength that produces along with this organic luminous layer and increasing.
10, organic illuminated display element according to claim 8 is characterized in that wherein more comprising between this anode layer and this organic luminous layer and disposes an electric hole transport layer.
11, organic illuminated display element according to claim 8 is characterized in that wherein more comprising between this anode layer and this organic luminous layer and disposes an electric hole implanted layer.
12, organic illuminated display element according to claim 8 is characterized in that wherein more comprising between this cathode layer and this organic luminous layer and disposes an electron transfer layer.
13, organic illuminated display element according to claim 8 is characterized in that wherein more comprising between this cathode layer and this organic luminous layer and disposes an electron injecting layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031236898A CN1549658A (en) | 2003-05-13 | 2003-05-13 | Organic light-emitting display element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031236898A CN1549658A (en) | 2003-05-13 | 2003-05-13 | Organic light-emitting display element |
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| CN1549658A true CN1549658A (en) | 2004-11-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521262B (en) * | 2008-02-27 | 2011-05-11 | 佳能株式会社 | Organic light-emitting device and display apparatus |
| CN107565038A (en) * | 2017-08-29 | 2018-01-09 | 上海天马微电子有限公司 | Display panel and display device |
| CN110676294A (en) * | 2013-10-24 | 2020-01-10 | 三星显示有限公司 | Organic light emitting display device |
-
2003
- 2003-05-13 CN CNA031236898A patent/CN1549658A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521262B (en) * | 2008-02-27 | 2011-05-11 | 佳能株式会社 | Organic light-emitting device and display apparatus |
| CN110676294A (en) * | 2013-10-24 | 2020-01-10 | 三星显示有限公司 | Organic light emitting display device |
| US11527733B2 (en) | 2013-10-24 | 2022-12-13 | Samsung Display Co., Ltd. | Organic light emitting display apparatus |
| CN110676294B (en) * | 2013-10-24 | 2023-05-26 | 三星显示有限公司 | Organic light emitting display device |
| US11930652B2 (en) | 2013-10-24 | 2024-03-12 | Samsung Display Co., Ltd. | Organic light emitting display apparatus including sub light emitting layers |
| CN107565038A (en) * | 2017-08-29 | 2018-01-09 | 上海天马微电子有限公司 | Display panel and display device |
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