CN104485346B - A kind of Organnic electroluminescent device and preparation method thereof - Google Patents
A kind of Organnic electroluminescent device and preparation method thereof Download PDFInfo
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- CN104485346B CN104485346B CN201410806974.9A CN201410806974A CN104485346B CN 104485346 B CN104485346 B CN 104485346B CN 201410806974 A CN201410806974 A CN 201410806974A CN 104485346 B CN104485346 B CN 104485346B
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Abstract
The invention belongs to field of organic electroluminescence, a kind of described Organnic electroluminescent device, the matrix layer of black is set in Organic Light Emitting Diode, and the matrix layer occupies certain area ratio in the Organic Light Emitting Diode, so as to effectively reduce reflection of ambient light area, on the premise of the Organnic electroluminescent device brightness and power consumption is not sacrificed, the reflecting rate of the Organnic electroluminescent device is reduced；Moreover, it is simple in construction, it is adapted to large-scale industrial production application.Simultaneously, a kind of preparation method of Organnic electroluminescent device of the present invention, matrix layer can is set to realize on the premise of the Organnic electroluminescent device brightness and power consumption is not sacrificed in the Organic Light Emitting Diode only by photoetching process, reduce the purpose of Organnic electroluminescent device reflecting rate, technique is simple, and it is low to prepare cost.
Description
Technical field
The present invention relates to field of organic electroluminescence, and in particular to a kind of Organic Electricity that can effectively reduce ambient light reflection
Electroluminescent devices and preparation method thereof.
Background technology
Organnic electroluminescent device (English full name Organic Light-Emitting Display, abbreviation OLED) is main
Dynamic luminescent device, has the advantages that high-contrast, wide viewing angle, low-power consumption, volume are thinner, is expected to show as main flow flat board of future generation
Show technology, be one of the most technology that attracted attention in current flat panel display.
At least one Organic Light Emitting Diode (English full name Organic is generally comprised in Organnic electroluminescent device
Light-Emitting Diode, abbreviation OLED), Organic Light Emitting Diode comprise at least with low work function transparent anode,
The negative electrode of high work function, and the luminescent layer of clamping between the anode and cathode.Existing Organnic electroluminescent device typically uses
The light that bottom emitting structure, i.e. Organic Light Emitting Diode are sent is sent through anode.In order to improve Organnic electroluminescent device
Luminous efficiency, the reflecting electrode with mirrored effect generally is made in negative electrode.
Although the luminous efficiency of Organnic electroluminescent device can be greatly improved in reflecting electrode, because organic electroluminescence is sent out
Electro-optical device belongs to thin-film device, the anode and light emitting layer thickness very little being stacked on negative electrode, usually nanoscale.This has been allowed for
Reflective phenomenon often occurs in organic electro luminescent device when in use, especially in low resolution device, due to single organic light emission
Cathode area is larger in diode, and mirrored effect is especially prominent, has had a strong impact on the using effect of Organnic electroluminescent device.
The method that polaroid or antiglare layer are attached on Organnic electroluminescent device exiting surface is typically employed in the prior art
To reduce reflection of ambient light, although this method can effectively reduce light reflectance, light penetration is low, has had a strong impact on aobvious
Display screen brightness；Add cost of material simultaneously.
The content of the invention
Therefore, the existing method for reducing Organnic electroluminescent device reflecting rate to be solved by this invention, brightness is low, raw material
The problem of cost is high, there is provided a kind of brightness is high, cost is low while can effectively prevent the organic electroluminescent of ambient light reflection
Device and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of Organnic electroluminescent device of the present invention, including the Organic Light Emitting Diode layer on substrate is formed,
The Organic Light Emitting Diode layer includes at least one Organic Light Emitting Diode, and the Organic Light Emitting Diode includes stacking gradually
First electrode layer, luminescent layer and the second electrode lay of setting；Also set up between the first electrode layer and the second electrode lay
There is matrix layer, the matrix layer has continuous hollow grid structure, and the luminescent layer is filled in the grid, the grid
For black.
The line width of the grid is 30 μm~10 μm.
The area of the grid is less than 0.01mm2。
The thickness of the matrix layer is more than or equal to the thickness of the luminescent layer.
Preferably, the matrix layer be polyimide layer, carbon black layer, titanium oxide layer, one layer in dark photoresist layer or
The combination of multilayer.
Preferably, the matrix layer is at least two mixing shapes in polyimides, carbon black, titanium oxide, dark photoresist
Into film layer.
The first electrode layer and/or the second electrode lay are euphotic electrode.
The Organic Light Emitting Diode also includes other organic layers, and other described organic layers include hole injection layer, electronics
The stacking of one kind or multilayer in barrier layer, hole transmission layer, electron transfer layer, hole blocking layer, electron injecting layer, it is described its
His organic layer is filled in the grid, and the thickness of the matrix layer is more than or equal to the thickness of the luminescent layer and other organic layers
Spend sum.
The preparation method of described Organnic electroluminescent device, comprises the following steps：
First electrode layer is formed on substrate；
Matrix layer is formed in first electrode layer, the matrix layer has continuous hollow grid structure；
Luminescent layer is formed in network；
The second electrode lay is formed on luminescent layer.
Preferably, the matrix layer is prepared by photoetching process.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
1st, a kind of Organnic electroluminescent device of the present invention, due to setting black in the Organic Light Emitting Diode
Matrix layer, and the matrix layer occupies certain area ratio in the Organic Light Emitting Diode, so as to effectively reduce
Reflection of ambient light area, on the premise of the Organnic electroluminescent device brightness and power consumption is not sacrificed, reduce described organic
The reflecting rate of el light emitting device；Moreover, it is simple in construction, it is adapted to large-scale industrial production application.
2nd, a kind of Organnic electroluminescent device of the present invention, by setting matrix in the Organic Light Emitting Diode
Layer, is divided into area by the Organic Light Emitting Diode and is less than 0.01mm2Subelement.When the distance of distinct vision of human eye is 25cm,
When retina to the distance of pupil is 22mm, minimum line distance about 0.1 millimeter of the distinguishable photopic vision of human eye away from place.I.e. described son
The length of unit and the wide minimum resolution linear distance being less than under people's emmetropia distance of distinct vision, effectively increase the organic electroluminescent
The careful degree that device is shown, so as to improve viewing comfortableness.
3rd, the preparation method of a kind of Organnic electroluminescent device of the present invention, only by photoetching process described organic
Set matrix layer can to realize in light emitting diode and do not sacrifice the premise of the Organnic electroluminescent device brightness and power consumption
Under, the purpose of Organnic electroluminescent device reflecting rate is reduced, technique is simple, and it is low to prepare cost.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is Organnic electroluminescent device side view described in the embodiment of the present invention；
Organnic electroluminescent device top view described in Fig. 2 embodiment of the present invention；
Reference is expressed as in figure：10- substrates, 1- first electrode layers, 2- luminescent layers, 3- the second electrode lays, 4- pixels
Confining layers, 5- matrix layers.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the reality below in conjunction with accompanying drawing to the present invention
The mode of applying is described in further detail.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
Conversely, there is provided these embodiments so that the disclosure will be thorough and complete, and the design of the present invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, Ceng He areas can be exaggerated
The size and relative size in domain.It should be appreciated that when element such as layer, region or substrate are referred to as " formation " or " set
" another element " on " when, the element can be arranged directly on another element, or there may also be intermediary element.
On the contrary, when element is referred to as on " being formed directly into " or " being set directly at " another element, in the absence of intermediary element.
Embodiment
The present embodiment provides a kind of Organnic electroluminescent device, as illustrated in fig. 1 and 2, including forms having on the substrate 10
Machine LED layers, the Organic Light Emitting Diode layer include at least one Organic Light Emitting Diode.It is described in the present embodiment
(for clarity, Fig. 1 and Fig. 2 illustrate only the part of the Organnic electroluminescent device to Organic Light Emitting Diode to be multiple
View), separated and be arranged in array by pixel confining layers 4 on the substrate 10.
The Organic Light Emitting Diode includes first electrode layer 1, luminescent layer 2 and the second electrode lay 3 for stacking gradually setting,
The first electrode layer 1 and/or the second electrode lay 3 are euphotic electrode；The first electrode layer 1 and the second electrode lay 3 it
Between be additionally provided with matrix layer 5, the matrix layer 5 has continuous hollow grid structure, and the luminescent layer 2 is filled in the grid
It is interior.
In the present embodiment, the material used in each layer, thickness, preparation technology in the Organic Light Emitting Diode compared with
Technology.As the convertible embodiment of the present invention, the Organic Light Emitting Diode also includes other organic layers, and described other are organic
Layer includes one in hole injection layer, electronic barrier layer, hole transmission layer, electron transfer layer, hole blocking layer, electron injecting layer
The stacking of kind or multilayer, other described organic layers are filled in the grid, and the thickness of the matrix layer 5 is more than or equal to described
The thickness sum of luminescent layer 2 and other organic layers, can realize the purpose of the present invention, belong to protection scope of the present invention.
The grid is black, and the matrix layer 5 can be polyimide layer, carbon black layer, titanium oxide layer, dark photoresist
One or more layers combination in layer, or be at least two mixing shapes in polyimides, carbon black, titanium oxide, dark photoresist
Into film layer, the present embodiment is preferably the polyimide layer of black.
Due to setting the matrix layer 5 of black, the line width of grid described in the matrix layer 5 in the Organic Light Emitting Diode
For 30 μm~10 μm so that the matrix layer 5 occupies certain area ratio in the Organic Light Emitting Diode, so as to
Reflection of ambient light area is effectively reduced, on the premise of the Organnic electroluminescent device brightness and power consumption is not sacrificed, is reduced
The reflecting rate of the Organnic electroluminescent device；Moreover, it is simple in construction, it is adapted to large-scale industrial production application.When the matrix
When the area ratio shared in the Organic Light Emitting Diode of layer 5 is 50%, best results.
When the distance of distinct vision of human eye is 25cm, when the distance of retina to pupil is 22mm, the distinguishable photopic vision of human eye is away from place
Minimum line distance about 0.1 millimeter.The present invention has by setting matrix layer 5 in the Organic Light Emitting Diode by described
Machine light emitting diode is divided into area and is less than 0.01mm2Subelement, i.e., less than under people's emmetropia distance of distinct vision minimum differentiate
Linear distance, the careful degree that the Organnic electroluminescent device is shown is effectively increased, so as to improve viewing comfortableness.
The preparation method of described Organnic electroluminescent device, comprises the following steps：
S1, first electrode layer 1 and pixel confining layers 4 are formed on the substrate 10, the pixel confining layers 4 are electric by described first
Pole layer 1 is defined to array arrangement structure；
S2, by photoetching process, matrix layer 5 is formed in first electrode layer 1, the matrix layer 5 has continuous hollow out
Network；
S3, luminescent layer 2 is formed in the network；
S4, the second electrode lay 3 is formed on the luminescent layer 2.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in protection scope of the present invention.
Claims (10)
1. a kind of Organnic electroluminescent device, including form the Organic Light Emitting Diode layer on substrate, the organic light emission two
Pole pipe layer includes at least one Organic Light Emitting Diode, and the Organic Light Emitting Diode includes stacking gradually the first electrode of setting
Layer, luminescent layer and the second electrode lay；Characterized in that, it is additionally provided with square between the first electrode layer and the second electrode lay
Battle array layer, the matrix layer have continuous hollow grid structure, and the luminescent layer is filled in the grid, and the grid is black
Color.
2. Organnic electroluminescent device according to claim 1, it is characterised in that the line width of the grid is 30 μm~10
μm。
3. Organnic electroluminescent device according to claim 1, it is characterised in that the area of the grid is less than
0.01mm2。
4. Organnic electroluminescent device according to claim 1, it is characterised in that the thickness of the matrix layer is more than or waited
In the thickness of the luminescent layer.
5. Organnic electroluminescent device according to claim 1, it is characterised in that the matrix layer be polyimide layer,
One or more layers combination in carbon black layer, titanium oxide layer, dark photoresist layer.
6. Organnic electroluminescent device according to claim 1, it is characterised in that the matrix layer is polyimides, carbon
At least two film layers being mixed to form in black, titanium oxide, dark photoresist.
7. according to any described Organnic electroluminescent devices of claim 1-6, it is characterised in that the first electrode layer and/
Or the second electrode lay is euphotic electrode.
8. the Organnic electroluminescent device described in a kind of claim 7, it is characterised in that the Organic Light Emitting Diode also includes
Other organic layers, other described organic layers include hole injection layer, electronic barrier layer, hole transmission layer, electron transfer layer, hole
The stacking of one kind or multilayer in barrier layer, electron injecting layer, other described organic layers are filled in the grid, the matrix
The thickness of layer is more than or equal to the thickness sum of the luminescent layer and other organic layers.
9. according to the preparation method of any described Organnic electroluminescent devices of claim 1-8, it is characterised in that including as follows
Step：
First electrode layer is formed on substrate；
Matrix layer is formed in first electrode layer, the matrix layer has continuous network, and the grid is black；
Luminescent layer is formed in network；
The second electrode lay is formed on luminescent layer.
10. Organnic electroluminescent device according to claim 9, it is characterised in that the matrix layer passes through photoetching process
Prepare.
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| CN107359268B (en) * | 2017-06-15 | 2019-04-30 | 武汉华星光电半导体显示技术有限公司 | Transparent OLED display panel and preparation method thereof |
| US10333098B2 (en) | 2017-06-15 | 2019-06-25 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Transparent OLED display panel and manufacturing method thereof |
| CN110299464A (en) * | 2019-07-03 | 2019-10-01 | 江苏集萃有机光电技术研究所有限公司 | OLED luminescence component, evaporation coating method, device and control method |
| CN112271441B (en) * | 2020-10-30 | 2023-04-07 | 北京维信诺光电技术有限公司 | Semiconductor device, manufacturing method thereof and antenna system |
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| CN101882666A (en) * | 2010-06-01 | 2010-11-10 | 昆山维信诺显示技术有限公司 | Organic electroluminescent device |
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| KR101002663B1 (en) * | 2008-12-11 | 2010-12-21 | 삼성모바일디스플레이주식회사 | Organic light emitting diode display |
| US8710611B2 (en) * | 2011-01-20 | 2014-04-29 | West Virginia University | High sensitivity stress sensor based on hybrid materials |
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