CN100444425C - Stack organic electroluminescent cell and its manufacturing method - Google Patents
Stack organic electroluminescent cell and its manufacturing method Download PDFInfo
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- CN100444425C CN100444425C CNB2005100930001A CN200510093000A CN100444425C CN 100444425 C CN100444425 C CN 100444425C CN B2005100930001 A CNB2005100930001 A CN B2005100930001A CN 200510093000 A CN200510093000 A CN 200510093000A CN 100444425 C CN100444425 C CN 100444425C
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Abstract
The invention relates to a stack organic electroluminescent element, which comprises base plate, anode layer, several organic lighting layers, several carrier generating layers, several reflective layers and cathode layer. Wherein, the base plate has the first lighting area, the second lighting area and the third lighting layer; the anode layer is above the base plate; and above the anode layer, there are first organic lighting layer, first carrier generating layer, second organic lighting layer, second carrier generating layer and third organic lighting layer; the first, second and third reflective layers are inside the stack structure, while they are relative to the first, second and third lighting areas; the cathode layer is above the third organic lighting layer. The invention has better lighting efficiency and better color purity.
Description
Technical field
The present invention relates to a kind of organic electroluminescent device and manufacture method thereof, and particularly relate to a kind of stack organic electroluminescent cell (Stacked Organic Electro-Luminesance Device, Stacked OLED) and manufacture method thereof.
Background technology
Organic electroluminescent device is the element that a kind of self luminous characteristic of utilizing organic functions material (organic functionalmaterials) reaches display effect, and its ray structure normally is made of pair of electrodes and organic functions material layer.When electric current by the zone between anode and negative electrode, make electronics and hole in the organic functions material layer again in conjunction with and when producing exciton (photon), just can make the organic functions material layer according to its properties of materials, and produce the mechanism of giving out light of different colours.
In the manufacturing of full-colorization organic illuminating element, known technology adopts makes a plurality of redness (R) organic light-emitting structure, green (G) organic light-emitting structure and blueness (B) organic light-emitting structure respectively, again with the mutual collocation of above-mentioned R, G, B organic light-emitting structure, and produce the organic illuminating element of full-colorization effect.But this full-colorization organic illuminating element is because the different and luminous brightness of the decay life cycle of the organic functions material of every kind of color is also different, so it will face the difference or the equal problem of brightness of luminance purity of all kinds.
For addressing the above problem, there is the researcher to propose multilayer superposing type organic illuminating element (multilayer
Stacked OLED), to make the monochrome or the white organic electroluminescent element of high-luminous-efficiency.It is with a plurality of monochromes or a plurality of white organic electroluminescent stacked elements, to improve its luminous efficiency.Fig. 1 is the schematic diagram of known multilayer superposing type organic illuminating element.Please refer to Fig. 1, this multilayer superposing type organic illuminating element 100 has substrate 110, pair of electrodes 120,130, a plurality of organic luminous layer 140 and a plurality of electric connection layer 150, wherein, organic luminous layer 140 piles up each other, and electric connection layer 150 is between every layer of organic luminous layer 140.When electric current passes through between the electrode 120,130, electronics 160 in each organic luminous layer 140 and hole 170 can be in conjunction with the formation exciton, and radiate visible light 180, therefore, as shown in Figure 1, take advantage of effect by adding of the exciton in the multilayer organic luminous layer, and improved the luminous efficiency of multilayer superposing type organic illuminating element 100.But structure as shown in Figure 1 only has the illumination effect of monochrome or white light, and it also can't reach the demand of full-colorization.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of stack organic electroluminescent cell, and it can reach the demand of full-colorization, and preferable luminous efficiency and colorimetric purity can be provided.
A further object of the present invention provides a kind of manufacture method of stack organic electroluminescent cell, and it can make the stack organic electroluminescent cell of full-colorization, and it also has preferable luminous efficiency and colorimetric purity.
Based on above-mentioned purpose or other purpose, the present invention proposes a kind of stack organic electroluminescent cell, it comprise substrate, anode layer (anode layer), a plurality of organic luminous layer, a plurality of charge carrier produce layer (Carrier Generation Layer, CGL), a plurality of reflector (reflecting layer) and cathode layer (cathode layer).Wherein, substrate has first light-emitting zone (first emittingarea), second light-emitting zone (second emitting area) and the 3rd light-emitting zone (thirdemitting area).Anode layer is arranged on the substrate.First organic luminous layer is arranged on the anode layer.Second organic luminous layer is arranged on first organic luminous layer.The 3rd organic luminous layer is arranged on second organic luminous layer, wherein this first, second and the 3rd organic luminous layer be to stack comprehensively.First charge carrier produces layer and is arranged between first organic luminous layer and second organic luminous layer.Second charge carrier produces layer and is arranged between second organic luminous layer and the 3rd organic luminous layer.First reflector is arranged in first light-emitting zone and between the substrate and first organic luminous layer.Second reflector is arranged in second light-emitting zone and between first organic luminous layer and second organic luminous layer.The 3rd reflector is arranged in the 3rd light-emitting zone and between second organic luminous layer and the 3rd organic luminous layer.Cathode layer is arranged on the 3rd organic luminous layer.
In one of the present invention preferred embodiment, above-mentioned stack organic electroluminescent cell for example also comprises chromatic filter layer (color filter layer), is arranged on the cathode layer.
In one of the present invention preferred embodiment, above-mentioned stack organic electroluminescent cell, (Hole Transport Layer HTL), is arranged between the anode layer and first organic luminous layer for example also to comprise hole transmission layer.
In one of the present invention preferred embodiment, the second above-mentioned reflector is arranged in second light-emitting zone and at first charge carrier and produces between the layer and second organic luminous layer.
In one of the present invention preferred embodiment, the second above-mentioned reflector is arranged in second light-emitting zone and at first charge carrier and produces between the layer and first organic luminous layer.
In one of the present invention preferred embodiment, the 3rd above-mentioned reflector is arranged in the 3rd light-emitting zone and at second charge carrier and produces between layer and the 3rd organic luminous layer.
In one of the present invention preferred embodiment, the 3rd above-mentioned reflector is arranged in the 3rd light-emitting zone and at second charge carrier and produces between the layer and second organic luminous layer.
In one of the present invention preferred embodiment, it for example is tungstic acid (WO with the material that second charge carrier produces layer that the first above-mentioned charge carrier produces layer
3).
In one of the present invention preferred embodiment, the material in the first above-mentioned reflector, second reflector and the 3rd reflector for example is to be selected from a kind of in the group that aluminium, chromium, silver, magnesium and alloy thereof form.
The present invention proposes a kind of manufacture method of stack organic electroluminescent cell, comprises the following steps.At first, provide substrate, it has first light-emitting zone, second light-emitting zone and the 3rd light-emitting zone.Then, on first light-emitting zone, form first reflector.Next, form anode layer on substrate, this anode layer covers first reflector.Afterwards, on anode layer, form first organic luminous layer.Then, on first organic luminous layer, form first charge carrier and produce layer.Next, produce formation second organic luminous layer on the layer at first charge carrier.Afterwards, on second organic luminous layer, form second charge carrier and produce layer.Then, produce at second charge carrier and to form the 3rd organic luminous layer on the layer, wherein this first, second and the 3rd organic luminous layer be to stack comprehensively.Afterwards, on the 3rd organic luminous layer, form cathode layer, wherein, between first organic luminous layer and second organic luminous layer, and be positioned at and also comprise on the position of second light-emitting zone and form second reflector, and between second organic luminous layer and the 3rd organic luminous layer, and be positioned at and also comprise on the position of the 3rd light-emitting zone and form the 3rd reflector.
In one of the present invention preferred embodiment, the technology of above-mentioned formation first organic luminous layer, second organic luminous layer and the 3rd organic luminous layer is to use identical patterned mask (patternedmask).
In one of the present invention preferred embodiment, the manufacture method of above-mentioned stack organic electroluminescent cell for example also is included in and forms chromatic filter layer on the cathode layer.
In one of the present invention preferred embodiment, the manufacture method of above-mentioned stack organic electroluminescent cell for example also is included between the anode layer and first organic luminous layer and forms hole transmission layer.
In one of the present invention preferred embodiment, it for example is to be selected from tungstic acid (WO with the material that second charge carrier produces layer that the first above-mentioned charge carrier produces layer
3).
In one of the present invention preferred embodiment, the material in the first above-mentioned reflector, second reflector and the 3rd reflector is selected from a kind of in the group that aluminium, chromium, silver, magnesium and alloy thereof form.
The present invention piles up because of the employing organic luminous layer comprehensively, and reaches the effect of full-colorization and obtain the preferable coloured light of colorimetric purity.And therefore the organic luminous layer structure that the present invention cooperates evaporation process to pile up with formation with identical patterned mask can reduce the number of patterned mask, and then reduce production costs.And the layering setting in reflector can improve the luminous efficiency of stack organic electroluminescent cell of the present invention, and improves its brightness with this.
State with other purpose, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the schematic diagram of known multilayer superposing type organic illuminating element.
Fig. 2 is the structural representation of a kind of stack organic electroluminescent cell in the preferred embodiment of the present invention.
Fig. 3 A is the spectrum schematic diagram that coloured light does not pass through red filter layer.
Fig. 3 B is that coloured light is through the spectrum schematic diagram after the red filter layer.
Fig. 4 A is the spectrum schematic diagram that coloured light does not pass through green filter layer.
Fig. 4 B is that coloured light is through the spectrum schematic diagram behind the green filter layer.
Fig. 5 is the spectrum schematic diagram after the coloured light process blue color filter layer.
Fig. 6 A～Fig. 6 E is the step of manufacturing schematic flow sheet of a kind of stack organic electroluminescent cell in the present invention's the preferred embodiment.
The main element description of symbols
100: multilayer superposing type organic illuminating element
110: substrate
120,130: electrode
140: organic luminous layer
150: electric connection layer
160: electronics
170: the hole
180: visible light
200: stack organic electroluminescent cell
210: substrate
212: the first light-emitting zones
214: the second light-emitting zones
216: the three light-emitting zones
220: anode layer
232,234,236: organic luminous layer
242,244: charge carrier produces layer
252,254,256: the reflector
260: cathode layer
270: hole transmission layer
280: chromatic filter layer
282: red filter layer
284: green filter layer
286: blue color filter layer
292,294,296: coloured light
292R: ruddiness
294G: green glow
296B: blue light
310,312: patterned mask
320,330: evaporation process
Embodiment
First embodiment
Fig. 2 is the structural representation of a kind of stack organic electroluminescent cell in the present invention's the preferred embodiment.Please refer to Fig. 2, this stack organic electroluminescent cell 200 comprises that substrate 210, anode layer 220, a plurality of organic luminous layer 232,234,236, a plurality of charge carrier produce layer 242,244, a plurality of reflector 252,254,256 and cathode layer 260.Wherein, substrate 210 has first light-emitting zone 212, second light-emitting zone 214 and the 3rd light-emitting zone 216.Anode layer 220 is arranged on the substrate 210.Organic luminous layer 232 is arranged on the anode layer 220.Organic luminous layer 234 is arranged on the organic luminous layer 232.Organic luminous layer 236 is arranged on the organic luminous layer 234.Charge carrier produces layer 242 and is arranged between organic luminous layer 232 and the organic luminous layer 234.Charge carrier produces layer 244 and is arranged between organic luminous layer 234 and the organic luminous layer 236.Reflector 252 is arranged in first light-emitting zone 212 and between substrate 210 and organic luminous layer 232.Reflector 254 is arranged in second light-emitting zone 214 and between organic luminous layer 232 and organic luminous layer 234.Reflector 256 is arranged in the 3rd light-emitting zone 216 and between organic luminous layer 234 and organic luminous layer 236.And cathode layer 260 is arranged on the organic luminous layer 236.
Please continue with reference to Fig. 2, substrate 210 can be plastic base or glass substrate, and is arranged at the anode layer 220 on the substrate 210, and its material for example is transparent or opaque conductive material.And the material of cathode layer 260 for example is the electrically conducting transparent material, so that each coloured light 292,294,296 can be penetrated.Above-mentioned electrically conducting transparent material for example can be selected indium tin oxide, indium-zinc oxide, aluminium zinc oxide, cadmium tin-oxide etc. for use, and above-mentioned transparent materials for example can be selected metal or alloy for use.
Between anode layer 220 and cathode layer 260, be provided with the stacked structure in a plurality of organic luminous layers 232,234,236, a plurality of charge carrier generation layer 242,244 and a plurality of reflector 252,254,256.Wherein, organic luminous layer 232 for example can send ruddiness, organic luminous layer 234 for example is to send green glow, and organic luminous layer 236 for example is to send blue light.
It should be noted that, stack organic electroluminescent cell 200 of the present invention, one of them characteristic is to utilize comprehensively piling up of each organic luminous layer 232,234,236, and charge carrier generation layer 242,244 is set between each organic luminous layer 232,234,236, so that charged carriers is able to smooth transmission.In a preferred embodiment, it for example is to be selected from tungstic acid (WO with the material that charge carrier produces layer 244 that charge carrier produces layer 242
3).
In addition, because organic electroluminescent device of the present invention is the design of adopting comprehensive stacked structure, so its mode that can only utilize same patterned mask (not shown) and cooperate whole evaporation can set gradually organic luminescent layer 232,234,236.Unlike known full-colorization organic electroluminescent device, it need utilize different patterned mask (at least three) and cooperate the evaporation mode, and then defines each organic light-emitting structure independently in each light-emitting zone.So stack organic electroluminescent cell 200 of the present invention can be saved the expense of patterned mask, and then reduce production costs.
Another characteristics of the present invention then are in the stacked structure of stack organic electroluminescent cell 200, and the appropriate location of corresponding first light-emitting zone 212, second light-emitting zone 214, the 3rd light-emitting zone 216 is provided with reflector 252,254,256.Thus, the light (not shown) that each organic luminous layer 232,234,236 sends towards substrate 210 directions, its 252,254,256 reflections of layer that can be reflected.And the light that the light that is reflected can be again sent towards cathode layer 260 directions (visual direction) with each organic luminous layer 232,234,236 is synthetic, and produces each preferable coloured light 292,294,296 of luminous efficiency.So, utilize the setting in reflector 252,254,256 can improve the luminous efficiency of stack organic electroluminescent cell 200.
Position that it should be noted that reflector 252,254,256 is to adopt hierarchical design, and can do suitable adjustment.Please refer to Fig. 2, is example with reflector 254,256, and in a preferred embodiment, reflector 254 for example is to be arranged in second light-emitting zone 214 and at charge carrier to produce between layer 242 and the organic luminous layer 234.In another embodiment, reflector 254 also can be arranged in second light-emitting zone 214 and at charge carrier and produce between layer 242 and the organic luminous layer 232.
Please continue with reference to Fig. 2, reflector 256 for example is to be arranged in the 3rd light-emitting zone 216 and at charge carrier to produce between layer 244 and the organic luminous layer 236.In another embodiment, reflector 256 also can be arranged in the 3rd light-emitting zone 216 and at charge carrier and produce between layer 244 and the organic luminous layer 234.In addition, the material in reflector 252,254,256 for example is to be selected from a kind of in the group that aluminium, chromium, silver, magnesium and alloy thereof form.
Please continue with reference to Fig. 2, in one of the present invention preferred embodiment, this stack organic electroluminescent cell 200 for example also comprises hole transmission layer 270, it is arranged between anode layer 220 and the organic luminous layer 232, the material of this hole transmission layer 270 for example is selected from poly-dioxoethyl thiophene (polyethylene dioxythiophene, PEDOT) or poly-p styrene sulfonic acid salt (polystyrenesulfonate, PSS), or be NPB, TPD, α-NPD, micromolecule organic materials such as MADN, it can also be other known hole mobile material, its role is to help the transmission in hole.
In addition, stack organic electroluminescent cell 200 as shown in Figure 2 for example also comprises chromatic filter layer 280, is arranged on the cathode layer 260.This chromatic filter layer 280 has red filter layer 282, green filter layer 284 and blue color filter layer 286, exports the better ruddiness of colorimetric purity, green glow and blue light in order to each coloured light 292,294,296 is filtered.
Fig. 3 A is the spectrum schematic diagram that coloured light does not pass through red filter layer.Fig. 3 B is that coloured light is through the spectrum schematic diagram after the red filter layer.As shown in Figure 2, the coloured light 292 that is sent in first light-emitting zone 212, it comprises the ruddiness that organic luminous layer 232 sends, the green glow that organic luminous layer 234 sends, and the blue light that sends of organic luminous layer 236.Therefore, by spectrum among Fig. 3 A as can be known, coloured light 292 has comprised compositions such as ruddiness, green glow and blue light.After coloured light 292 was passing through the effect of red filter layer 282, the ruddiness composition in the coloured light 292 was filtered off, and obtains the better ruddiness 292R of the colorimetric purity shown in Fig. 3 B.
Fig. 4 A is the spectrum schematic diagram that coloured light does not pass through green filter layer.Fig. 4 B is that coloured light is through the spectrum schematic diagram behind the green filter layer.As shown in Figure 2, the coloured light 294 that is sent in second light-emitting zone 214, it includes the green glow that organic luminous layer 234 sends, and the blue light that sends of organic luminous layer 236.Therefore, by the spectrum among Fig. 4 A as can be known, coloured light 294 has comprised compositions such as green glow and blue light.After coloured light 294 was passing through the effect of green filter layer 284, the green glow in the coloured light 294 was filtered off, and obtains the better green glow 294G of colorimetric purity shown in Fig. 4 B.
Fig. 5 is the spectrum schematic diagram after the coloured light process blue color filter layer.As shown in Figure 2, the coloured light 296 that is sent in the 3rd light-emitting zone 216, it only comprises blue light ingredient.Therefore, by the spectrum of Fig. 5 as can be known, coloured light 296 there is no any difference through after the blue color filter layer 284 between its resulting blue light 296B and the coloured light 296.
In sum, stack organic electroluminescent cell 200 of the present invention has utilized comprehensively piling up of organic luminous layer 232,234,236, and reaches the effect of full-colorization and obtain the preferable coloured light of colorimetric purity.Its advantage is for only to utilize a patterned mask just to reach piling up of organic luminous layer 232,234,236, so can reduce production cost.In addition, utilize the layering setting in reflector 252,254,256, can improve the luminous efficiency of stack organic electroluminescent cell 200, and improve its brightness.Second embodiment
Fig. 6 A～Fig. 6 E is the step of manufacturing schematic flow sheet of a kind of stack organic electroluminescent cell in the present invention's the preferred embodiment.Please refer to the step shown in Fig. 6 A～Fig. 6 E, this technology is a continuous processing.
At first, as shown in Figure 6A, provide substrate 210, it has first light-emitting zone 212, second light-emitting zone 214 and the 3rd light-emitting zone 216.This substrate 210 for example is plastic base or glass substrate.
Then, shown in Fig. 6 B, on first light-emitting zone 212, form reflector 252.This reflector 252 is arranged in first light-emitting zone 212 and is positioned on the substrate 210.The method that forms reflector 252 for example is to utilize patterned mask 310 to cooperate evaporation process 320, and reflector 252 is formed in first light-emitting zone 212 on the substrate 210.In one embodiment, the material in reflector 252 for example is to be selected from a kind of in the group that aluminium, chromium, silver, magnesium and alloy thereof form.
Next, shown in Fig. 6 C, form anode layer 220 on substrate 210, this anode layer 220 covers reflector 252.The method that forms anode layer 220 for example is to utilize sputtering method that anode layer 220 is formed on the substrate 210 all sidedly, in one embodiment, the material of anode layer 220 for example comprises transparent or opaque conductive material, wherein opaque conductive material for example is metal, alloy etc., and the electrically conducting transparent material for example is indium tin oxide, indium-zinc oxide, aluminium zinc oxide, cadmium tin-oxide etc.
Then, shown in Fig. 6 D, on anode layer 220, form organic luminous layer 232.The method that forms organic luminous layer 232 for example is to utilize patterned mask 312 to cooperate evaporation process 330, and organic material is formed on the anode layer 220 all sidedly.In one embodiment, also can between anode layer 220 and organic luminous layer 232, form hole transmission layer 270 earlier, between anode layer 220 and organic luminous layer 232, transmit to help the hole.
Afterwards, shown in Fig. 6 E, on organic luminous layer 232, form charge carrier and produce layer 242, produce formation organic luminous layer 234 on the layer 242 at charge carrier, on organic luminous layer 234, form charge carrier and produce layer 244, produce formation organic luminous layer 236 on the layer 244 at charge carrier, and on organic luminous layer 236, form cathode layer 260, wherein, between organic luminous layer 232 and organic luminous layer 234, and be positioned at and also comprise on the position of second light-emitting zone 214 and form reflector 254, and between organic luminous layer 234 and organic luminous layer 236, and be positioned on the position of the 3rd light-emitting zone 216 and also comprise formation reflector 256.The material that produces layer 242,244, reflector 252,254,256 and cathode layer 260 about charge carrier is no longer repeated at this in described in first embodiment.To produce the method for layer 242,244 similar with the method for the described formation organic luminous layer 232 of Fig. 6 D and form charge carrier, just can utilize patterned mask (not shown) cooperation evaporation process and make.In addition, the method for the formation in reflector 254,256 is also similar as the method for making reflector 252 described in Fig. 6 B, utilizes different patterned mask (not shown)s to cooperate evaporation process 320 and makes.
It should be noted that in one of the present invention preferred embodiment the technology of above-mentioned formation organic luminous layer 232, organic luminous layer 234 and organic luminous layer 236 is to use identical patterned mask 312.Therefore, stack organic electroluminescent cell 200 of the present invention can be saved the expense of patterned mask, and unlike known full-colorization organic electroluminescent device, need utilize different patterned mask, and cooperate the evaporation mode and define each organic light-emitting structure in the different light-emitting zones.
Referring again to Fig. 6 E, on cathode layer 280, can also form chromatic filter layer 280, it has red filter layer 282, green filter layer 284 and blue color filter layer 286, utilizes chromatic filter layer 280 can further obtain the coloured light of better colorimetric purity.And the method that forms chromatic filter layer 280 for example is print process (print method) or ink-jet method (Inkjet).
In sum, stack organic electroluminescent cell of the present invention has following advantage:
(1) stack organic electroluminescent cell of the present invention has utilized comprehensively piling up of organic luminous layer, and can reach the effect of full-colorization and obtain the preferable coloured light of colorimetric purity, and the organic luminous layer structure that it utilizes identical patterned mask to cooperate evaporation process to pile up with formation, therefore can reduce the number of patterned mask, and then reduce production costs.
(2) utilize the layering setting in reflector, can improve the luminous efficiency of stack organic electroluminescent cell of the present invention, to improve its brightness.
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 invention; when can doing a little change and improvement, so the present invention's protection range is as the criterion when looking the claim person of defining.
Claims (15)
1. stack organic electroluminescent cell is characterized in that comprising:
Substrate has first light-emitting zone, second light-emitting zone and the 3rd light-emitting zone;
Anode layer is arranged on this substrate;
First organic luminous layer is arranged on this anode layer;
Second organic luminous layer is arranged on this first organic luminous layer;
The 3rd organic luminous layer is arranged on this second organic luminous layer, wherein this first, second and the 3rd organic luminous layer be to stack comprehensively;
First charge carrier produces layer, is arranged between this first organic luminous layer and this second organic luminous layer;
Second charge carrier produces layer, is arranged between this second organic luminous layer and the 3rd organic luminous layer;
First reflector is arranged in this first light-emitting zone and between this substrate and this first organic luminous layer;
Second reflector is arranged in this second light-emitting zone and between this first organic luminous layer and this second organic luminous layer;
The 3rd reflector is arranged in the 3rd light-emitting zone and between this second organic luminous layer and the 3rd organic luminous layer; And
Cathode layer is arranged on the 3rd organic luminous layer.
2. stack organic electroluminescent cell according to claim 1 is characterized in that also comprising chromatic filter layer, is arranged on this cathode layer.
3. stack organic electroluminescent cell according to claim 1 is characterized in that also comprising hole transmission layer, is arranged between this anode layer and this first organic luminous layer.
4. stack organic electroluminescent cell according to claim 1 is characterized in that this second reflector is arranged in this second light-emitting zone and at this first charge carrier to produce between layer and this second organic luminous layer.
5. stack organic electroluminescent cell according to claim 1 is characterized in that this second reflector is arranged in this second light-emitting zone and at this first charge carrier to produce between layer and this first organic luminous layer.
6. stack organic electroluminescent cell according to claim 1 is characterized in that the 3rd reflector is arranged in the 3rd light-emitting zone and at this second charge carrier to produce between layer and the 3rd organic luminous layer.
7. stack organic electroluminescent cell according to claim 1 is characterized in that the 3rd reflector is arranged in the 3rd light-emitting zone and at this second charge carrier to produce between layer and this second organic luminous layer.
8. stack organic electroluminescent cell according to claim 1 is characterized in that this first charge carrier produces layer and comprises tungstic acid with the material that this second charge carrier produces layer.
9. stack organic electroluminescent cell according to claim 1, the material that it is characterized in that this first reflector, this second reflector and the 3rd reflector are to be selected from a kind of in the group that aluminium, chromium, silver, magnesium and alloy thereof form.
10. the manufacture method of a stack organic electroluminescent cell is characterized in that comprising:
Substrate is provided, and it has first light-emitting zone, second light-emitting zone and the 3rd light-emitting zone;
On this first light-emitting zone, form first reflector;
Form anode layer on this substrate, this anode layer covers this first reflector;
On this anode layer, form first organic luminous layer;
On this first organic luminous layer, form first charge carrier and produce layer;
Produce layer in this first charge carrier and go up formation second organic luminous layer;
On this second organic luminous layer, form second charge carrier and produce layer;
Produce layer in this second charge carrier and go up and form the 3rd organic luminous layer, wherein this first, second and the 3rd organic luminous layer be to stack comprehensively; And
On the 3rd organic luminous layer, form cathode layer, wherein, between this first organic luminous layer and this second organic luminous layer, and be positioned at and also comprise on the position of this second light-emitting zone and form second reflector, and between this second organic luminous layer and the 3rd organic luminous layer, and be positioned at and also comprise on the position of the 3rd light-emitting zone and form the 3rd reflector.
11. the manufacture method of stack organic electroluminescent cell according to claim 10 is characterized in that the technology that forms this first organic luminous layer, this second organic luminous layer and the 3rd organic luminous layer is to use identical patterned mask.
12. the manufacture method of stack organic electroluminescent cell according to claim 10 is characterized in that also being included on this cathode layer and forms chromatic filter layer.
13. the manufacture method of stack organic electroluminescent cell according to claim 10 is characterized in that also being included between this anode layer and this first organic luminous layer and forms hole transmission layer.
14. the manufacture method of stack organic electroluminescent cell according to claim 10 is characterized in that this first charge carrier produces layer and comprises tungstic acid with the material that this second charge carrier produces layer.
15. the manufacture method of stack organic electroluminescent cell according to claim 10, the material that it is characterized in that this first reflector, this second reflector and the 3rd reflector are selected from a kind of in the group that aluminium, chromium, silver, magnesium, silver, magnesium and alloy thereof form.
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| CN102760841B (en) * | 2012-07-11 | 2014-11-26 | 深圳市华星光电技术有限公司 | Organic light-emitting diode device and corresponding display device |
| CN105895663B (en) * | 2016-05-19 | 2018-11-13 | 京东方科技集团股份有限公司 | A kind of electro-luminescence display device, its production method and display device |
| CN107425129B (en) * | 2017-07-26 | 2019-12-06 | 上海天马有机发光显示技术有限公司 | organic light-emitting display panel, color temperature adjusting method thereof and display device |
| CN110459586B (en) * | 2019-08-30 | 2021-10-15 | 云谷（固安）科技有限公司 | Array substrate and display panel |
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| CN1096936C (en) * | 1994-12-13 | 2002-12-25 | 普林斯顿大学理事会 | Multicolor organic light emitting devices |
| CN1426269A (en) * | 2001-12-06 | 2003-06-25 | 索尼公司 | Display device and its producing method |
| US6872472B2 (en) * | 2002-02-15 | 2005-03-29 | Eastman Kodak Company | Providing an organic electroluminescent device having stacked electroluminescent units |
| US20040241491A1 (en) * | 2003-05-28 | 2004-12-02 | Eastman Kodak Company | White light-emitting device structures |
| CN1638570A (en) * | 2003-12-29 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | Organic electroluminescence device |
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