CN102956677A - OLED (Organic Light Emitting Diode) display device and manufacturing method thereof - Google Patents
OLED (Organic Light Emitting Diode) display device and manufacturing method thereof Download PDFInfo
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- CN102956677A CN102956677A CN2012105089737A CN201210508973A CN102956677A CN 102956677 A CN102956677 A CN 102956677A CN 2012105089737 A CN2012105089737 A CN 2012105089737A CN 201210508973 A CN201210508973 A CN 201210508973A CN 102956677 A CN102956677 A CN 102956677A
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Abstract
The invention provides an OLED (Organic Light Emitting Diode) display device and a manufacturing method thereof. The OLED display device comprises a substrate, a first electrode layer, an organic function layer, a first transparent electrode layer and a packaging piece, wherein the first electrode layer is positioned on the substrate; the organic function layer is positioned on the first electrode layer; the first transparent electrode layer is positioned on the organic function layer; the packaging piece is attached with the substrate; and the first electrode layer is made of conducting material with the wavelength being 620-760nm and light reflectivity being more than 90%. The invention has the advantages that the microcavity effect is formed between the anode made of transparent conducting material and a transparent cathode, and by the microcavity effect, red light generated by the organic function layer generates red shift, so that x of CIE (Coherent Infrared Energy) reaches to be more than 0.68 and further the dark-red OLED display device is obtained.
Description
Technical field
The present invention relates to the display device technology field, relate in particular to a kind of OLED display unit and preparation method thereof.
Background technology
Organic LED display device (Organic Light-Emitting Diode; OLED), be called again organic electroluminescence display device and method of manufacturing same (Organic Electroluminesence; OEL) be a quite young Display Technique.It utilizes organic semiconducting materials and luminescent material to produce the luminous demonstration that realizes under the driving of electric current.OLED compares with LCD and has many good qualities: ultralight, ultra-thin, high brightness, with great visual angle, luminous, the low-power consumption of pixel self, fast-response, high definition, lower calorific value, excellent anti-seismic performance, low cost of manufacture, flexible etc.Generally believed it is the Display Technique of new generation that has development prospect most by industry.
The principle of luminosity of OLED is to insert organic function layer between anode and negative electrode, and this organic function layer generally includes electric charge injection layer, charge transport layer and luminescent layer, applies suitable voltage between electrode, and device just can be luminous.OLED is divided into two kinds according to the bright dipping mode, and light sends from real estate and is end emission type, and light sends from rear capping and is top emission type.
Fig. 1 example has the OLED display unit schematic cross-section of the bottom emissive type in the technology.The OLED display unit of this bottom emissive type comprises substrate 11, be formed at anode 12 on the substrate 11, be formed at organic function layer 13 on the anode 12, be formed at negative electrode 14, bonnet 15 and packaging plastic 16 on the organic function layer 13, and bonnet 15 fits together by packaging plastic 16 and substrate 11.Wherein, substrate 11 is generally glass, anode 12 is generally the ITO transparent conductive film, organic function layer 13 generally includes hole injection layer, hole transmission layer, luminescent layer, electrode transport layer and electron injecting layer, negative electrode 14 is generally aluminium, silver, magnesium or its alloy, bonnet 15 comprises glass back cover and metal back cover, and packaging plastic 16 is generally ultraviolet curing glue.
The color of OLED display unit generally is comprised of the red, green, blue three primary colors, and three kinds of colors are sent by different luminescent materials respectively.The scope of the CIE value of red material is: the x value of CIE is that the y value of 0.63 ~ 0.68, CIE is 0.30 ~ 0.35.The typical CIE value of red material is (0.66,0.34), and the red application of this kind is comparatively extensive.But in some special purposes (as making trade mark), need more wine-colored CIE value, for example (0.70,0.30), even darker redness (0.72,0.28).CIE comprises x, two values of y, and in general, the x value of CIE just can reach the peony effect in 0.68 above OLED display unit, and the y value of CIE is little on wine-colored impact.
Basis at existing anode material (such as ITO) is difficult to meet the requirements of peony CIE coordinate figure, and this is that reflectivity is very little, can't form microcavity effect with negative electrode because ITO is transparency electrode.It is generally acknowledged that the CIE coordinate figure between (0.68,0.32) ~ (0.72,0.28), just can reach wine-colored effect.
Summary of the invention
In order to satisfy existing demand to peony OLED display unit, namely the x value of CIE reaches more than 0.68, and the technical solution used in the present invention is:
The invention provides a kind of OLED display unit, comprise: substrate, be positioned at the first electrode layer on the described substrate, be positioned at organic function layer on described the first electrode layer, be positioned at the first transparent electrode layer on the described organic function layer, with the case chip of described baseplate-laminating, it is characterized in that, it is that the reflection of light rate of 620 ~ 760nm is made at the electric conducting material more than 90% that described the first electrode layer adopts wavelength.
Preferably, described electric conducting material is metallic copper.
Preferably, also comprise the second transparent electrode layer between described the first electrode layer and described organic function layer.
Preferably, described the second transparent electrode layer adopts the ITO material to make.
The present invention also provides a kind of manufacture method of OLED display unit, comprising:
One substrate is provided;
On described substrate, make the first electrode layer;
On described the first electrode layer, make organic function layer;
On described organic function layer, make the first transparent electrode layer;
With described baseplate-laminating on case chip;
Wherein, to adopt wavelength be that the reflection of light rate of 620 ~ 760nm is made at the electric conducting material more than 90% for described the first electrode layer.
Preferably, described electric conducting material is metallic copper.
Preferably, described after described substrate is made the first electrode layer and described before described the first electrode layer is made organic function layer, also comprise: at described the first electrode layer making the second transparent electrode layer.
Preferably, described the second transparent electrode layer adopts the ITO material to make.
The present invention is that the reflection of light rate of 620 ~ 760nm is made anode at the electric conducting material more than 90 by adopting wavelength, transparent metal is made negative electrode, because of the electric conducting material as anode, be that the reflectivity of the ruddiness between 620 ~ 760nm is high to wavelength, can be used as reflecting electrode, transparent cathode is as transmission electrode, at the moon, make organic function layer between sun two electrodes, during energising, red material in the organic function layer can be sent red light, between the anode of being made by opaque electric conducting material and transparent cathode, form microcavity effect like this, make the light generation red shift of organic function layer generation by microcavity effect, the value of the x of CIE can be reached more than 0.68, can obtain peony OLED display unit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is OLED structural representation of the prior art;
Fig. 2 is the schematic diagram of embodiment one among the present invention;
Fig. 3 is the schematic diagram of embodiment two among the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can be in the situation that do similar popularization without prejudice to intension of the present invention, therefore, the present invention is not subjected to the restriction of following public specific embodiment.
Embodiment one
See also Fig. 2 (comprising Fig. 2 (a) and Fig. 2 (b)).Fig. 2 (a) is the structural representation of the OLED display unit of the embodiment of the invention one.This OLED display unit comprises: substrate 21, be positioned at the first electrode layer 22 on the substrate 21, be positioned at organic function layer 23 on the first electrode layer 22, be positioned at the first transparent electrode layer 24 on the organic function layer 23, with the case chip 25 that substrate 21 is fitted, this case chip 25 fits together by packaging plastic 26 and substrate 21.Wherein, to adopt wavelength be that the reflection of light rate of 620 ~ 760nm is made at the electric conducting material more than 90% to this first electrode layer 22.
This OLED display unit adopts the method shown in Fig. 2 (b) to be made.Consult in detail Fig. 2 (b).Fig. 2 (b) is the manufacture method flow chart of the OLED display unit of embodiment one.
S201, provide substrate:
Provide a transparency carrier 21, shown in Fig. 2 (a).Material to transparency carrier 21 is without restriction, can be PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), PEN (PEN), polyether sulfone (PES), cyclic olefin polymer (COC), glass or toughened glass etc.
S202, on described substrate, make the first electrode layer:
Adopt the method for magnetron sputtering to make the first electrode layer 22 at substrate 21, shown in Fig. 2 (a).The thickness of this first electrode layer 22 is 100 ~ 500nm, adopts the photoetching of gold-tinted processing procedure to obtain required electrode pattern.
The material of making the first electrode layer 21 in the present embodiment is for being that the reflection of light rate of 620 ~ 760nm is the electric conducting material more than 90% to wavelength.Wavelength is that the light of 620 ~ 760nm is ruddiness.Like this, when energising, this electrode pair ruddiness has very high reflectivity, utilizes microcavity effect, easily obtains wine-colored OLED display unit, and namely the x value of CIE is in the OLED display unit more than 0.68.Broadly, so long as the material of this first electrode reaches more than 90% the reflectivity of ruddiness, generally just can reach requirement, for example, metallic copper, metallic aluminium (Al), argent or its alloy to the reflectivity of ruddiness all more than 90%, wherein, metallic copper is preferred material, because itself color is the copper red look, add its electric conductivity good, can be used as one of preferred material.
S203, on described the first electrode layer, make organic function layer:
Generally, adopt the method for evaporation on the first electrode layer 22, to make organic function layer 23, shown in Fig. 2 (a).This organic function layer 23 comprises organic luminous layer at least, has better display effect in order to make display unit, and organic function layer 23 generally includes: hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer.If the first electrode layer 22 is anode, the organic function layer of evaporation comprises successively: hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer.Wherein, the thickness of the hole injection layer of evaporation is adjusted in 100 ~ 600nm scope, and the CIE value of OLED display unit changes along with the variation of the thickness of organic function layer, adjust as required, thereby the x value that can access CIE is greater than 0.68 OLED display unit.
S204, on described organic function layer, make the first transparent electrode layer:
Adopt evaporation coating method on organic function layer 23, to make the first transparent electrode layer 24, shown in Fig. 2 (a).These the first transparent electrode layer 24 general metallic aluminium (Al), silver (Ag), magnesium (Mg) or its alloys of adopting are made.The thickness requirement of this first transparent electrode layer 24 is very thin, is preferably 5-20nm.Because if the thickness of this first transparent electrode layer 24 is too thick, can cause that the transmitance of light descends.
S205, with described baseplate-laminating on case chip:
Adopt packaging plastic 26 that described substrate 21 is fitted on the case chip 25, shown in Fig. 2 (a).Usually the packaging plastic 26 that adopts is the packaging plastic of ultraviolet curing.
The OLED display unit that manufacture method by the present embodiment is made, employing is that the reflection of light rate of 620 ~ 760nm is made anode at the electric conducting material more than 90% to wavelength, make negative electrode by the first transparent electrode layer, perhaps, to be that the reflection of light rate of 620 ~ 760nm is made into negative electrode at the electric conducting material more than 90% to wavelength, the first transparent electrode layer be made into anode.Like this, the OLED display unit forms microcavity effect in the middle of two electrodes, because of the luminous redness that is generally of OLED, the CIE coordinate is (0.66,0.34), pass through microcavity effect, spectrum generation red shift in the OLED, the CIE coordinate figure can reach (0.68,0.32) ~ (0.72,0.28) scope, thereby obtain peony OLED display unit.Because the y value of CIE is little on the impact of peony color, so the CIE value can reach more than 0.68, the OLED display unit just can be sent generally acknowledged peony.Pass through to adjust the thickness of each layer in the present embodiment, even can make the x value of CIE reach 0.72, this is to be difficult in the prior art can't accomplish in other words.
In addition, the manufacture method of the making OLED display unit that the embodiment of the invention provides, simple to operate.
The anode of the OLED display unit among the embodiment one only have one deck to the reflection of light rate of 620 ~ 760nm at the conductive material layer more than 90%.The transparency of this electric conducting material may not be very desirable, for the transparency of intensifier electrode, can also be that the first electrode layer is made the high transparent electrode layer of a transparency at this conductive material layer again.
Embodiment two
See also Fig. 3 (comprising Fig. 3 (a) and Fig. 3 (b)).Fig. 3 (a) is the structural representation of the OLED display unit of the embodiment of the invention two.The structure difference of OLED among this OLED display device structure and the embodiment one is, also comprise the second transparent electrode layer 27 between the first electrode layer 22 and organic function layer 23, other structure and Reference numeral are identical with embodiment's one, for the purpose of concise and to the point, and no longer in detail statement.
Fig. 3 (b) is the manufacture method flow chart of the OLED display unit of the embodiment of the invention two.Step S301 and S302 are identical with step S201 and S202 among the embodiment one.For the purpose of concise and to the point, be not described in detail, see also the associated description of embodiment one.
S303, on described the first electrode layer, make the second transparent electrode layer:
Generally, adopt the method for magnetron sputtering to make the second transparent electrode layer 27 at the first electrode layer, shown in Fig. 3 (a).The second transparent electrode layer 27 can increase the transparency of this electrode.In theory, the second transparent electrode layer 27 is so long as the electric conducting material of the high grade of transparency gets final product preferred ITO material.
S304, on described the second transparent electrode layer, make organic function layer:
On the second transparent electrode layer 27, make organic function layer 23.This step is identical with step S203 among the embodiment one, and statement sees also the step S203 among the embodiment one no longer in detail.
Step S305 to S306 is identical with step S204 to S205 among the embodiment one, and for the purpose of concise and to the point, statement sees also the step S204 to S205 among the embodiment one no longer in detail.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. OLED display unit, comprise: substrate, be positioned at the first electrode layer on the described substrate, be positioned at organic function layer on described the first electrode layer, be positioned at the first transparent electrode layer on the described organic function layer, with the case chip of described baseplate-laminating, it is characterized in that, it is that the reflection of light rate of 620 ~ 760nm is made at the electric conducting material more than 90% that described the first electrode layer adopts wavelength.
2. OLED display unit according to claim 1 is characterized in that, described electric conducting material is metallic copper.
3. OLED display unit according to claim 1 is characterized in that, also comprises the second transparent electrode layer between described the first electrode layer and described organic function layer.
4. OLED display unit according to claim 2 is characterized in that, described the second transparent electrode layer adopts the ITO material to make.
5. the manufacture method of an OLED display unit is characterized in that, comprising:
One substrate is provided;
On described substrate, make the first electrode layer;
On described the first electrode layer, make organic function layer;
On described organic function layer, make the first transparent electrode layer;
With described baseplate-laminating on case chip;
Wherein, to adopt wavelength be that the reflection of light rate of 620 ~ 760nm is made at the electric conducting material more than 90% for described the first electrode layer.
6. manufacture method according to claim 5 is characterized in that, described electric conducting material is metallic copper.
7. manufacture method according to claim 5, it is characterized in that, described after described substrate is made the first electrode layer and described before described the first electrode layer is made organic function layer, also comprise: at described the first electrode layer making the second transparent electrode layer.
8. manufacture method according to claim 7 is characterized in that, described the second transparent electrode layer adopts the ITO material to make.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490021A (en) * | 2013-09-30 | 2014-01-01 | 上海大学 | Packaging device |
| CN105609520A (en) * | 2015-09-08 | 2016-05-25 | 上海和辉光电有限公司 | Transparent display screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060175958A1 (en) * | 2003-07-21 | 2006-08-10 | Anja Gerhard | Organic electroluminescent element |
| CN1934727A (en) * | 2004-03-19 | 2007-03-21 | 伊斯曼柯达公司 | Organic light-emitting device having improved stability |
| CN101097996A (en) * | 2007-06-20 | 2008-01-02 | 中国科学院长春光学精密机械与物理研究所 | Organic phosphorescent electroluminescence device based on cuprous complex material |
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- 2012-11-30 CN CN201210508973.7A patent/CN102956677B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060175958A1 (en) * | 2003-07-21 | 2006-08-10 | Anja Gerhard | Organic electroluminescent element |
| CN1934727A (en) * | 2004-03-19 | 2007-03-21 | 伊斯曼柯达公司 | Organic light-emitting device having improved stability |
| CN101097996A (en) * | 2007-06-20 | 2008-01-02 | 中国科学院长春光学精密机械与物理研究所 | Organic phosphorescent electroluminescence device based on cuprous complex material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490021A (en) * | 2013-09-30 | 2014-01-01 | 上海大学 | Packaging device |
| CN103490021B (en) * | 2013-09-30 | 2015-12-02 | 上海大学 | Packaging system |
| CN105609520A (en) * | 2015-09-08 | 2016-05-25 | 上海和辉光电有限公司 | Transparent display screen |
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