CN100525563C - Organic electroluminescence component and its manufacturing method - Google Patents
Organic electroluminescence component and its manufacturing method Download PDFInfo
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- CN100525563C CN100525563C CNB200510090099XA CN200510090099A CN100525563C CN 100525563 C CN100525563 C CN 100525563C CN B200510090099X A CNB200510090099X A CN B200510090099XA CN 200510090099 A CN200510090099 A CN 200510090099A CN 100525563 C CN100525563 C CN 100525563C
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Abstract
The invention relates to an OEL (organic electroluminescent) element including: a number of first electrodes, a number of first auxiliary electrodes, a number of second auxiliary electrodes, a number of organic luminous pictures and a number of second electrodes. The first electrodes are set on the base board, the first auxiliary electrodes are set on at least one edge of the base board, and each of the first auxiliary electrodes electrically connects with one of the first electrode. The second auxiliary electrodes are set on the other edge of the base board, and the first and second auxiliary electrodes are composed of a layer of Al-Nd alloy and the nitride layer of Al-Nd with a double-layer structure. The organic luminous pictures are set on the first electrodes, the second electrodes are set on the organic luminous pictures and each of the second auxiliary electrodes is connected with one of the second electrodes electrically.
Description
Technical field
The present invention relates to a kind of organic electroluminescent device and manufacture method thereof, and particularly relates to a kind of passive type organic electroluminescent element array (passive matrix organicelectroluminescence device) and manufacture method thereof.
Background technology
Organic electroluminescent device is a kind of electric energy fluorescence excitation organic compound that utilizes, so that its self-emission device that emits beam.Because organic electroluminescent device has the characteristic of low driving voltage, high answer speed, and the display floater that utilizes this technology manufacturing to form has advantages such as bigger visual angle, volume be more frivolous, therefore, organic electroluminescent device can overcome the difficulty that liquid crystal indicator is run into, and become the main flow of display unit of future generation.
Generally speaking, the passive type organic electroluminescent element array includes a plurality of first strip shaped electric poles, a plurality of second strip shaped electric poles and organic luminous layer, this second strip shaped electric poles is to intersect with first strip shaped electric poles, and organic luminous layer then is to be folded between first strip shaped electric poles and second strip shaped electric poles.This first strip shaped electric poles and second strip shaped electric poles are made up of indium tin oxide (ITO), therefore, need auxiliary electrode and help being electrically connected between first strip shaped electric poles, second strip shaped electric poles and the drive circuit.
In known technology, auxiliary electrode can be made up of the sandwich construction of chromium/aluminium/chromium or the single layer structure of silver.If when forming this auxiliary electrode with the sandwich construction of chromium/aluminium/chromium, because of including two kinds of different materials---chromium and aluminium in the auxiliary electrode, so, a plurality of sputtering chamber and etching bath need be arranged, to carry out the manufacturing of auxiliary electrode, thus, can increase and make last trouble.Yet, if with the silver of individual layer when forming auxiliary electrode because silver itself is very easy to oxidation, therefore, easily cause the increase of its resistance value.
Summary of the invention
Purpose of the present invention just provides a kind of organic electroluminescent device, and the auxiliary electrode of this organic electroluminescent device has lower resistance value.
A further object of the present invention provides a kind of manufacture method of organic electroluminescent device, can simplify the manufacturing process of organic electroluminescent device, and can prevent the oxidation of its auxiliary electrode.
The present invention proposes a kind of organic electroluminescent device, and it includes a plurality of first electrodes, a plurality of first auxiliary electrode, a plurality of second auxiliary electrode, a plurality of organic light emission pattern and a plurality of second electrode.This first electrode is to be arranged on the substrate, and this first auxiliary electrode is to be arranged at least one edge of substrate, and each first auxiliary electrode is electrically connected with a formation in first electrode.This second auxiliary electrode is another edge that is arranged at substrate, and this first auxiliary electrode and second auxiliary electrode all are made of aluminum-neodymium alloys layer and double-decker that aluminium-the neodymium nitration case is formed.This organic light emission pattern is to be positioned on first electrode, and this second electrode is to be arranged on the organic light emission pattern, and each second electrode is to be electrically connected with a formation in second auxiliary electrode.
Preferred embodiment according to the present invention is described, and the thickness range of this aluminum-neodymium alloys layer is between 100～400 nanometers, and the thickness range of this aluminium-neodymium nitration case is between 5～100 nanometers.
Preferred embodiment according to the present invention is described, and this organic electroluminescent device also comprises pixel defining layer, is covered on this first electrode, and exposes first electrode of part.
Preferred embodiment according to the present invention is described, and this organic electroluminescent device also comprises separating layer, is positioned on the pixel defining layer.
The present invention proposes a kind of organic electroluminescent device in addition, and it includes a plurality of first electrodes, a plurality of first auxiliary electrode, a plurality of second auxiliary electrode, cover layer, a plurality of organic light emission pattern and a plurality of second electrode.This first electrode is to be arranged on the substrate, and this first auxiliary electrode is to be arranged at least one edge of substrate, and each first auxiliary electrode is electrically connected with a formation in first electrode.This second auxiliary electrode is another edge that is arranged at substrate, and this first auxiliary electrode and second auxiliary electrode are made of silver layer or ag alloy layer.This cover layer is the edge that is positioned at substrate, with first auxiliary electrode and second auxiliary electrode of cover part.This organic light emission pattern is to be positioned on first electrode, and this second electrode is to be arranged on the organic light emission pattern, and each second electrode is to be electrically connected with a formation in second auxiliary electrode.
Preferred embodiment according to the present invention is described, and this silver layer or the thickness range of ag alloy layer are between 200～500 nanometers, and the thickness range of this cover layer is between 500～4000 nanometers.
The present invention also proposes a kind of manufacture method of organic electroluminescent device, at first, forms a plurality of first electrodes on substrate.Afterwards, form a plurality of first auxiliary electrodes in one of substrate edge, and form a plurality of second auxiliary electrodes in another edge of substrate, and in each first auxiliary electrode and first electrode one is electrically connected, and first auxiliary electrode and second auxiliary electrode all are made up of the double-decker of aluminum-neodymium alloys layer and aluminium-neodymium nitration case.Then, on first electrode, form a plurality of organic light emission patterns.And on the organic light emission pattern, form a plurality of second electrodes, and in each second electrode and second auxiliary electrode one is electrically connected.
Preferred embodiment according to the present invention is described, and the step that forms this first auxiliary electrode and second auxiliary electrode comprises: form the first aluminum-neodymium alloys layer; Afterwards, on this first aluminum-neodymium alloys layer, form the second aluminum-neodymium alloys layer; Then, this second aluminum-neodymium alloys layer is carried out nitrogen treatment, to form aluminium-neodymium nitration case; At last, with this aluminium-neodymium nitration case and the first aluminum-neodymium alloys layer patternization, to form first auxiliary electrode and second auxiliary electrode.
Preferred embodiment according to the present invention is described, and before forming this organic light emission pattern, the method also is included on first electrode and forms pixel defining layer.
Preferred embodiment according to the present invention is described, before forming this second electrode, also is included in and forms separating layer on the pixel defining layer.
The present invention reintroduces a kind of manufacture method of organic electroluminescent device.At first, on substrate, form a plurality of first electrodes.Afterwards, form a plurality of first auxiliary electrodes in one of substrate edge, and form a plurality of second auxiliary electrodes in another edge of substrate, and in each first auxiliary electrode and first electrode one is electrically connected, and this first auxiliary electrode and second auxiliary electrode are made of silver layer or ag alloy layer.Then, form cover layer in the edge of substrate, with first auxiliary electrode and second auxiliary electrode of covering part branch.Then, on first electrode, form a plurality of organic light emission patterns.At last, on this organic light emission pattern, form a plurality of second electrodes, and in each second electrode and second auxiliary electrode one is electrically connected.
Described according to preferred embodiment of the present invention, before forming this organic light emission pattern, the method also is included on first electrode and forms pixel defining layer.In addition, when forming this pixel defining layer, just form this cover layer simultaneously.
Described according to preferred embodiment of the present invention, before forming this second electrode, the method also is included in and forms separating layer on the pixel defining layer.In addition, when forming this separating layer, just form this cover layer simultaneously.
In the present invention, this first auxiliary electrode and second auxiliary electrode all are made of aluminum-neodymium alloys layer and double-decker that aluminium-the neodymium nitration case is formed.In the known technology with auxiliary electrode that chromium/aluminium/chromium was made up, in the manufacture method of the present invention's organic electroluminescent device, only need utilize a kind of target (aluminium/neodymium alloy target) and a kind of etching solution prescription can manufacture first auxiliary electrode and second auxiliary electrode, therefore, the effective complexity of simplified manufacturing technique not only, and also can reduce the required time of whole manufacturing process.
If when utilizing silver with Low ESR or silver alloy to make this first auxiliary electrode and second auxiliary electrode, also be formed with cover layer on this first auxiliary electrode and second auxiliary electrode, to prevent the oxidation of first auxiliary electrode and second auxiliary electrode.In addition, because this cover layer can form when defining this pixel defining layer or define this separating layer simultaneously, therefore, the present invention can form this cover layer under the situation that does not increase original photomask number.
For above and other objects of the present invention, feature and advantage can be become apparent, the present invention's cited below particularly preferred embodiment, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 to Fig. 3 is the vertical view of one of the manufacture method of the present invention's organic electroluminescent device embodiment.
Fig. 4 A is the profile of the organic electroluminescent device drawn along the A-A ' hatching among Fig. 3, and this organic electroluminescent device has pixel defining layer and separating layer.
Fig. 4 B is the profile of the organic electroluminescent device drawn along the B-B ' hatching among Fig. 3, and this organic electroluminescent device has pixel defining layer and separating layer.
Fig. 5 to Fig. 6 is the vertical view of another embodiment of the manufacture method of the present invention's organic electroluminescent device.
Fig. 7 A is the profile of the organic electroluminescent device drawn along the A-A ' hatching among Fig. 6, and this organic electroluminescent device has pixel defining layer and separating layer.
Fig. 7 B includes pixel defining layer and separating layer for the profile of the organic electroluminescent device drawn along the B-B ' hatching among Fig. 6 in this organic electroluminescent device.
Fig. 8 A includes pixel defining layer and separating layer for the profile of another organic electroluminescent device of being drawn along the A-A ' hatching among Fig. 6 in this organic electroluminescent device.
Fig. 8 B includes pixel defining layer and separating layer for the profile of another organic electroluminescent device of being drawn along the B-B ' hatching among Fig. 6 in this organic electroluminescent device.
The main element description of symbols
100: substrate
102: the first electrodes
104: the first auxiliary electrodes
106: the second auxiliary electrodes
108: the organic light emission pattern
110: the second electrodes
112: pixel defining layer
114: separating layer
120a: cover layer
120b: cover layer
Embodiment
Below with the conjunction with figs. mark, the present invention's preferred embodiment is described.And in Reference numeral and specification, the components identical symbol is promptly represented identical or similar elements.
Embodiment one
Please refer to Fig. 1 to shown in Figure 3, be the vertical view of its first embodiment of manufacture method of the present invention's organic electroluminescent device.As shown in Figure 1, at first, provide substrate 100, this substrate 100 can be glass substrate or plastic base.Afterwards, on this substrate 100, form a plurality of first electrodes 102, and this first electrode 102 is made up of transparent conductive material, for example: indium tin oxide or indium-zinc oxide.And this first electrode 102 can be a plurality of strip shaped electric poles that are parallel to each other that are arranged on the substrate 100.
Next, at least one edge of substrate 100, form a plurality of first auxiliary electrodes 104, and on another edge of substrate 100, form a plurality of second auxiliary electrodes 106.Each first auxiliary electrode 104 be with first electrode 102 in one be electrically connected, and first auxiliary electrode 104 and second auxiliary electrode 106 can form simultaneously.In addition, this first auxiliary electrode 104 can be formed on first electrode 102, is electrically connected so that it constitutes with first electrode 102.
It should be noted that especially this first auxiliary electrode 104 and second auxiliary electrode 106 all are made of aluminum-neodymium alloys layer and double-decker that aluminium-neodymium nitration case (not shown) is formed.More careful ground, this first auxiliary electrode 104 and second auxiliary electrode 106 are made up of two-layer structure up and down, the material of this understructure is an aluminum-neodymium alloys, and the material of this superstructure is aluminium-neodymium nitride, and the thickness range of aluminum-neodymium alloys layer is between 100～400 nanometers, and the thickness range of aluminium-neodymium nitration case is between 5～100 nanometers.And the manufacturing process of this first auxiliary electrode 104 and second auxiliary electrode 106 is described as follows: at first, utilize the mode of sputter to go up formation one deck first aluminum-neodymium alloys layer in the surface of substrate 100; Then, utilize the mode of sputter on the first aluminum-neodymium alloys layer, to form one deck second aluminum-neodymium alloys layer again; Afterwards, this second aluminum-neodymium alloys layer is carried out nitrogen treatment, to form aluminium-neodymium nitration case; Afterwards, with this aluminium-neodymium nitration case and the first aluminum-neodymium alloys layer patternization, can form first auxiliary electrode 104 and second auxiliary electrode 106.And carry out in the step of nitrogen treatment at this second aluminum-neodymium alloys layer, the argon gas of 100～150sccm and the nitrogen of 1～10sccm can be imported in the sputtering chamber, to carry out nitrogen treatment.
As shown in Figure 2, after forming first auxiliary electrode 104 and second auxiliary electrode 106, on first electrode 102, form a plurality of organic light emission patterns 108.This organic light emission pattern 108 is to be arranged on first electrode 102, and it for example is to include red organic light emission pattern, green organic light emission pattern and blue organic light emission pattern.
After this, as shown in Figure 3, on organic light emission pattern 108, form a plurality of second electrodes 110, and each second electrode 110 is electrically connected on one in second auxiliary electrode 106.This second electrode 110 includes a plurality of strip shaped electric poles that are arranged in parallel to each other on the substrate 100, and intersects with first electrode 102.In this embodiment, the bearing of trend of the bearing of trend of this second electrode 110 and first electrode 102 is perpendicular.And this second electrode 110 is made up of transparent conductive material, for example: indium tin oxide or indium-zinc oxide.
And in a preferred embodiment, in forming this organic light emission pattern 108 (please refer to Fig. 2) before, prior to forming pixel defining layer and separating layer on the substrate 100, and following in detail this pixel defining layer and separating layer will be described in detail.
Please refer to shown in Fig. 4 A, be the profile of the organic electroluminescent device drawn along the A-A ' hatching among Fig. 3 with pixel defining layer and separating layer; And shown in Fig. 4 B, be the profile of the organic electroluminescent device drawn along the B-B ' hatching among Fig. 3 with pixel defining layer and separating layer.Shown in Fig. 4 A and 4B, this pixel defining layer 112 is to be deposited on the substrate 100 and first electrode 102, and exposes first electrode 102 of part.And this pixel defining layer 112 is the shape of similar matrix, and to define a plurality of pixel cells on substrate 100, afterwards, organic light emission pattern 108 is formed in the zone that pixel defining layer 112 defines out.In addition, separating layer 114 is formed on this pixel defining layer 112, and this separating layer 114 is formed with the perpendicular list structure of first electrode 102 (as shown in Figure 1) by many, thus, when deposition the second electrode lay (not shown), the second electrode lay can be divided into many second electrodes 110.This pixel defining layer 112 is a photoresist layer, and its material for example is a polyimides (polyimide), and its thickness is between 500～1200 nanometers.And this separating layer 114 is similarly photoresist layer, for example is negative photoresist, and its thickness is between 2000～4000 nanometers.
And in the present invention's first embodiment, this first auxiliary electrode 104 and second auxiliary electrode 106 are made of aluminum-neodymium alloys layer and double-decker that aluminium-the neodymium nitration case is made up.In known technology, with auxiliary electrode that chromium/aluminium/the chromium manufacturing forms comparatively speaking, the present invention only need use a kind of target-aluminium/neodymium alloy target when sputter, and when carrying out etch process, only need to use a kind of etching solution prescription, can manufacture first auxiliary electrode 104 and second auxiliary electrode 106, therefore, the effective complexity of simplified manufacturing technique not only, and also can reduce the required time of whole manufacturing process.
Embodiment two
In the present invention's second embodiment, method disclosed in the manufacture method of its organic electroluminescent device and first embodiment is identical, but, its first auxiliary electrode and second auxiliary electrode then are made up of silver layer or ag alloy layer, and on first auxiliary electrode and second auxiliary electrode, also include cover layer, to cover first auxiliary electrode and second auxiliary electrode.Please refer to shown in Figure 5, after forming first electrode 102, form a plurality of first auxiliary electrodes 104 and a plurality of second auxiliary electrodes 106 at the edge of substrate 100, this first auxiliary electrode 104 all is made up of the silver or the silver alloy of individual layer with a plurality of second auxiliary electrodes 106.And in this embodiment, this silver layer or the thickness of ag alloy layer for example are between 200～500 nanometers.Then, at the formation cover layer 120a (or 120b) of edge of substrate 100, with first auxiliary electrode 104 and a plurality of second auxiliary electrodes 106 of cover part.And in this embodiment, the thickness of this cover layer 120a (or 120b) for example is between 500～4000 nanometers.Afterwards, as shown in Figure 6, on first electrode 102, form a plurality of organic light emission patterns 108, and on organic light emission pattern 108, form a plurality of second electrodes 110, and each second electrode 110 is electrically connected with a formation in second auxiliary electrode 106.
Please refer to shown in Fig. 7 A and the 7B, in this second embodiment, be formed with pixel defining layer 112 and separating layer 114 on the substrate 100 equally.Shown in Fig. 7 A, this pixel defining layer 112 is to be positioned on the substrate 100 and first electrode 102, to expose first electrode 102 of part.This separating layer 114 then is to be positioned on the pixel defining layer 112.In this embodiment, when forming this pixel defining layer 112, just can form this cover layer 120a simultaneously.In other words, this cover layer 120a and pixel defining layer 112 can form simultaneously, so the material of this cover layer 120a and thickness thereof are all identical with pixel defining layer 112.
Please refer to shown in Fig. 8 A and the 8B, in another embodiment, when forming separating layer 114, can form this cover layer 120b simultaneously.In other words, this cover layer 120b and separating layer 114 form simultaneously, so the material of this cover layer 120b and thickness thereof are all identical with separating layer 114.
In the present invention's second embodiment, this first auxiliary electrode 104 and second auxiliary electrode 106 all are made up of the silver layer or the ag alloy layer of Low ESR, and also form a cover layer 120a (or 120b) on this first auxiliary electrode 104 and second auxiliary electrode 106, to prevent the oxidation of first auxiliary electrode 104 and second auxiliary electrode 106.In addition, because this cover layer can form when defining this pixel defining layer or define this separating layer simultaneously, therefore, the present invention can form this cover layer under the situation that does not increase original photomask number.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any person of ordinary skill in the field; without departing from the spirit and scope of the present invention; when can doing a little change and improvement, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (21)
1. organic electroluminescent device is characterized in that comprising:
A plurality of first electrodes are arranged on the substrate;
A plurality of first auxiliary electrodes are positioned at least one edge of this substrate, and respectively this first auxiliary electrode is electrically connected in above-mentioned first electrode one;
A plurality of second auxiliary electrodes are positioned at another edge of this substrate, and described another edge is the adjacent side at the edge at the described first auxiliary electrode place, and above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode all are made of aluminum-neodymium alloys layer and aluminium-neodymium nitration case;
A plurality of organic light emission patterns are arranged on above-mentioned first electrode; And
A plurality of second electrodes are arranged on the above-mentioned organic light emission pattern, and wherein respectively in this second electrode and above-mentioned second auxiliary electrode is electrically connected.
2. the organic electroluminescent device according to claim 1, the thickness range that it is characterized in that this aluminum-neodymium alloys layer is between 100～400 nanometers.
3. the organic electroluminescent device according to claim 1, the thickness range that it is characterized in that this aluminium-neodymium nitration case is between 5～100 nanometers.
4. the organic electroluminescent device according to claim 1, it is characterized in that also comprising pixel defining layer, be covered on above-mentioned first electrode, and expose above-mentioned first electrode of part, wherein above-mentioned organic light emission pattern is to be arranged in the zone that this pixel defining layer defines out.
5. the organic electroluminescent device according to claim 4 is characterized in that also comprising separating layer, is positioned on this pixel defining layer.
6. organic electroluminescent device is characterized in that comprising:
A plurality of first electrodes are arranged on the substrate;
A plurality of first auxiliary electrodes are positioned at least one edge of this substrate, and respectively in this first auxiliary electrode and above-mentioned first electrode is electrically connected;
A plurality of second auxiliary electrodes are positioned at another edge of this substrate, and described another edge is the adjacent side at the edge at the described first auxiliary electrode place, and above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode are made of silver layer or ag alloy layer;
A plurality of organic light emission patterns are arranged on above-mentioned first electrode;
Cover layer is arranged at the edge of this substrate, and covers the part of above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode; And
A plurality of second electrodes are covered on the above-mentioned organic light emission pattern, and wherein respectively in this second electrode and above-mentioned second auxiliary electrode is electrically connected.
7. the organic electroluminescent device according to claim 6, the thickness range that it is characterized in that this silver layer or this ag alloy layer is between 200～500 nanometers.
8. the organic electroluminescent device according to claim 6, the thickness range that it is characterized in that this cover layer is between 500～4000 nanometers.
9. the organic electroluminescent device according to claim 6, it is characterized in that also comprising pixel defining layer, be covered on above-mentioned first electrode, and state first electrode on exposing partly, wherein above-mentioned organic light emission pattern is to be arranged in the zone that this pixel defining layer defines out.
10. the organic electroluminescent device according to claim 9 is characterized in that the material of this cover layer is identical with the material of this pixel defining layer.
11. the organic electroluminescent device according to claim 9 is characterized in that also comprising separating layer, is positioned on this pixel defining layer.
12. the organic electroluminescent device according to claim 11 is characterized in that the material of this cover layer is identical with the material of this separating layer.
13. the manufacture method of an organic electroluminescent device is characterized in that comprising:
On substrate, form a plurality of first electrodes;
Form a plurality of first auxiliary electrodes in the edge of this substrate, and form a plurality of second auxiliary electrodes in another edge of this substrate, described another edge is the adjacent side at the edge at the described first auxiliary electrode place, respectively in this first auxiliary electrode and above-mentioned first electrode is electrically connected, and above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode all are made of aluminum-neodymium alloys layer and aluminium-neodymium nitration case;
On above-mentioned first electrode, form a plurality of organic light emission patterns; And
Form a plurality of second electrodes on above-mentioned organic light emission pattern, wherein respectively in this second electrode and above-mentioned second auxiliary electrode is electrically connected.
14., it is characterized in that the step that forms above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode comprises according to the manufacture method of the described organic electroluminescent device of claim 13:
Form the first aluminum-neodymium alloys layer;
On this first aluminum-neodymium alloys layer, form the second aluminum-neodymium alloys layer;
This second aluminum-neodymium alloys layer is carried out nitrogen treatment, to form aluminium-neodymium nitration case; And
With this aluminium-neodymium nitration case and this first aluminum-neodymium alloys layer patternization, to form above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode.
15., it is characterized in that before forming above-mentioned organic light emission pattern, also being included on above-mentioned first electrode and forming pixel defining layer according to the manufacture method of the described organic electroluminescent device of claim 13.
16., it is characterized in that before forming above-mentioned second electrode, also being included on this pixel defining layer and forming separating layer according to the manufacture method of the described organic electroluminescent device of claim 15.
17. the manufacture method of an organic electroluminescent device is characterized in that comprising:
On substrate, form a plurality of first electrodes;
Form a plurality of first auxiliary electrodes in the edge of this substrate and form a plurality of second auxiliary electrodes in another edge of this substrate, described another edge is the adjacent side at the edge at the described first auxiliary electrode place, respectively in this first auxiliary electrode and above-mentioned first electrode is electrically connected, and above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode are made of silver layer or ag alloy layer;
Edge in this substrate forms cover layer, to cover the part of above-mentioned first auxiliary electrode and above-mentioned second auxiliary electrode;
On above-mentioned first electrode, form a plurality of organic light emission patterns; And
Form a plurality of second electrodes on above-mentioned organic light emission pattern, wherein respectively in this second electrode and above-mentioned second auxiliary electrode is electrically connected.
18., it is characterized in that before forming above-mentioned organic light emission pattern, also being included on above-mentioned first electrode and forming pixel defining layer according to the manufacture method of the described organic electroluminescent device of claim 17.
19., it is characterized in that when forming this pixel defining layer, just forming this cover layer simultaneously according to the manufacture method of the described organic electroluminescent device of claim 18.
20., it is characterized in that before forming above-mentioned second electrode, also being included on this pixel defining layer and forming separating layer according to the manufacture method of the described organic electroluminescent device of claim 18.
21., it is characterized in that when forming this separating layer, just forming this cover layer simultaneously according to the manufacture method of the described organic electroluminescent device of claim 20.
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