CN103956376B - A kind of OLED illumination panel and auxiliary electrode thereof - Google Patents
A kind of OLED illumination panel and auxiliary electrode thereof Download PDFInfo
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- CN103956376B CN103956376B CN201410175878.9A CN201410175878A CN103956376B CN 103956376 B CN103956376 B CN 103956376B CN 201410175878 A CN201410175878 A CN 201410175878A CN 103956376 B CN103956376 B CN 103956376B
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Abstract
The cathode layer of a kind of OLED illumination panel of the present invention includes the strip shaped electric poles of parallel distribution, and one end of electrode is connected and forms E font；Panel also includes the enhancement mode auxiliary electrode layer and the equally distributed auxiliary electrode layer being connected and stretch into EML luminescent layer of parallel strip that are positioned at cathode layer with anode layer, and enhancement mode auxiliary electrode layer extends as auxiliary electrode layer connection to EML luminescent layer。Have the beneficial effects that one is that after adopting this structure, the light that luminescent layer sends can be gone out more by ITO transmission。In OLED illumination panel device architecture, the light that luminescent layer sends can not all be gone out in transmission, because to be stopped by auxiliary electrode。Owing to the auxiliary electrode of this fermentation is list structure, higher in cancellated panel aperture opening ratio than existing, therefore when drive condition is identical, the brightness adopting the OLED illumination panel of the present invention can be higher。Two is that difference between the maximum resistance pressure drop of each point on panel and minimum resistance pressure drop reduces。
Description
Technical field
The invention belongs to OLED lighting technical field, relate to the luminous balancing technique of OLED illumination panel, be specifically related to a kind of OLED illumination panel and for improving the auxiliary electrode structure of its uniformity of luminance。
Background technology
OLED illumination has environment affinity and can make area source, so attracting tremendous attention as follow-on illuminating device。OLED illumination panel is by transparent anode ITO layer, luminescent layer EML and aluminum (Al) cathode layer composition。Owing to transparent anode sheet resistance is relatively big, being about 10 Ω/, face plate center zone resistance pressure drop (IR-DROP) is serious, causes that illumination panel has obvious brightness irregularities phenomenon, and in large area lighting panel, the problem of brightness irregularities is particularly acute。
As shown in Figures 1 and 2, for improving the inhomogeneities of illumination panel brightness, existing technical scheme is to increase to connect with described transparent anode on transparent anode layer, and is interconnected between self in netted auxiliary electrode chromium (Cr)。Owing to the sheet resistance of auxiliary electrode is less, being about 1 Ω/, face plate center zone resistance pressure drop reduces, and panel luminance uniformity is improved。But, in the prior art, the auxiliary electrode of increase is in the network structure being interconnected on transparent anode layer, and its underpart connects with described transparent anode, and top is positioned at luminescent layer。Owing to auxiliary electrode is opaque, light can't pass, and after therefore increasing auxiliary electrode, reduces the aperture opening ratio of panel, will obtain identical brightness and be accomplished by bigger driving electric current。
Summary of the invention
The invention aims to existing for solving the problem that OLED illumination panel causes more greatly non-uniform light due to sheet resistance, it is proposed that a kind of OLED illumination panel and for improving the auxiliary electrode structure of its uniformity of luminance。
The technical scheme is that a kind of OLED illumination panel, including ito anode layer, EML luminescent layer and cathode layer, it is characterised in that described cathode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font；Panel also includes the enhancement mode auxiliary electrode layer and the equally distributed auxiliary electrode layer being connected and stretch into EML luminescent layer of parallel strip that are positioned at cathode layer with anode layer, enhancement mode auxiliary electrode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, the E font opening direction also level crossing relative to cathode layer of enhancement mode auxiliary electrode layer, is isolated by insulated column between enhancement mode auxiliary electrode layer and cathode layer；Described enhancement mode auxiliary electrode layer extends as auxiliary electrode layer connection to EML luminescent layer。
Further, described cathode layer is metallic aluminium。
The auxiliary electrode of OLED illumination panel, it is characterized in that, including the first auxiliary electrode being connected with ito anode and the second auxiliary electrode being positioned at metal cathode layer, described cathode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, second auxiliary electrode shape is identical with cathode layer shape, and arranges with cathode layer cross parallel in opposite directions；First auxiliary electrode shape is identical with the second auxiliary electrode shape, and extends to EML luminescent layer from ito anode and cathode layer respectively and contact with each other；Isolated by insulated column between cathode layer and the second auxiliary electrode layer。
Beneficial effects of the present invention: one is that after adopting this structure, the light that luminescent layer sends can be gone out more by ITO transmission。In OLED illumination panel device architecture, the light that luminescent layer sends can not all be gone out in transmission, because to be stopped by auxiliary electrode。Owing to the auxiliary electrode of this fermentation is list structure, higher in cancellated panel aperture opening ratio than existing, therefore when drive condition is identical, the brightness adopting the OLED illumination panel of the present invention can be higher。Two is that difference between the maximum resistance pressure drop of each point on OLED illumination panel and minimum resistance pressure drop reduces。So, after OLED illumination panel powers on, the brightness difference that on panel, each point sends also reduces therewith, and the OLED illumination panel brightness uniformity therefore adopting this invention is better。Three are as on OLED illumination panel the reduction of the resistance drop of each point, and the power consumption consumed on auxiliary resistance when driving electric current identical necessarily reduces, and so whole panel power consumption also can reduce therewith。And along with the reduction of panel power consumption, panel caloric value reduces, temperature rise during panel work and then reduces, and the aging meeting of OLED material slows down, and therefore the life-span of OLED illumination panel will extend。In manufacturing process, insulated column is processed into inverted trapezoidal shape (side being namely connected with ITO is little, and other side is big), it is also possible to further enhance the effect above。Therefore, under identical drive condition, compared with adopting prior art, the OLED illumination panel aperture opening ratio of the employing present invention is higher, brightness is higher and uniformity is better, the life-span is longer, and power consumption is lower, and the requirement of heat radiation is lower。
Accompanying drawing explanation
Fig. 1 is the device architecture profile of existing OLED illumination panel；
Fig. 2 is the auxiliary electrode structure of OLED illumination panel shown in Fig. 1；
Fig. 3 is the profile of the device architecture of the oled panel of the present invention；
Fig. 4 is the auxiliary electrode structure upward view of the oled panel shown in Fig. 3；
Fig. 5 is the top view of the oled panel shown in Fig. 3。
Detailed description of the invention
Following example of the present invention are based on principles of the invention and design, and below in conjunction with accompanying drawing and specific embodiment, the invention will be further elaborated。
As shown in Fig. 3, Fig. 4 and Fig. 5, a kind of OLED illumination panel of the present embodiment, including ito anode layer, EML luminescent layer and cathode layer, described cathode layer includes the strip shaped electric poles of parallel distribution, and one end of electrode is connected and forms E font；Panel also includes the enhancement mode auxiliary electrode layer and the equally distributed auxiliary electrode layer being connected and stretch into EML luminescent layer of parallel strip that are positioned at cathode layer with anode layer, enhancement mode auxiliary electrode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, the E font opening direction also level crossing relative to cathode layer of enhancement mode auxiliary electrode layer, is isolated by insulated column between enhancement mode auxiliary electrode layer and cathode layer；Described enhancement mode auxiliary electrode layer extends as auxiliary electrode layer connection to EML luminescent layer。Described cathode layer is metallic aluminium。
The present embodiment further provides for the auxiliary electrode of OLED illumination panel, including the first auxiliary electrode being connected with ito anode and the second auxiliary electrode being positioned at metal cathode layer, described cathode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, second auxiliary electrode shape is identical with cathode layer shape, and arranges with cathode layer cross parallel in opposite directions；First auxiliary electrode shape is identical with the second auxiliary electrode shape, and extends to EML luminescent layer from ito anode and cathode layer respectively and contact with each other；Isolated by insulated column between cathode layer and the second auxiliary electrode layer。
From figure 3, it can be seen that illumination panel includes enhancement mode auxiliary electrode (Al), metallic cathode (Al) and insulated column。Wherein enhancement mode auxiliary electrode is consistent with auxiliary electrode shape is also connected in side, and metallic cathode is strip and is connected at offside, and enhancement mode auxiliary electrode and metallic cathode are not attached to。
The illumination panel of the present embodiment provides a kind of novel auxiliary electrode structure for OLED illumination panel, to improve panel luminance uniformity and to reduce panel power consumption。Especially by introduce low square resistance Al as enhancement mode auxiliary electrode。Adding insulated column, metal Al is separated by insulated column, and a part of Al does negative electrode, and another part is as the enhancement mode auxiliary electrode of transparent anode。Insulated column penetrates luminescent layer and is based upon above ITO, and the Al of enhancement mode auxiliary electrode and auxiliary electrode Cr is joined directly together。As shown in Figure 4, different from existing netted auxiliary electrode structure, the auxiliary electrode of the present embodiment is list structure to the auxiliary electrode structure of the OLED illumination panel of the present embodiment, is only interconnected in side。From metal cathode layer (vertical view), the top view of the OLED of the present embodiment is as shown in Figure 5, it is that metallic cathode is different entirely with this layer existing, in the present embodiment, this layer is divided into independent three part, is enhancement mode auxiliary electrode (Al), metallic cathode (Al), insulated column respectively。Wherein enhancement mode auxiliary electrode is consistent with the auxiliary electrode shape above transparent anode, and width can be different, is also connected in side, and metallic cathode be strip and is connected at offside, and enhancement mode auxiliary electrode and metallic cathode are isolated post and separate and be not attached to mutually。
Owing to the sheet resistance of metal Al is more much smaller than Cr, it is about 0.2 Ω/, therefore adopts above-mentioned enhancement mode auxiliary electrode structure, it is possible to be effectively reduced on OLED illumination panel the resistance drop of each point。
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in reader understanding's principles of the invention, it should be understood that protection scope of the present invention is not limited to such special statement and embodiment。Those of ordinary skill in the art can make various other various concrete deformation and combination without departing from essence of the present invention according to these technology disclosed by the invention enlightenment, and these deformation and combination remain in protection scope of the present invention。
Claims (3)
1. an OLED illumination panel, including ito anode layer, EML luminescent layer and cathode layer, it is characterised in that described cathode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font；Panel also includes the enhancement mode auxiliary electrode layer and the equally distributed auxiliary electrode layer being connected and stretch into EML luminescent layer of parallel strip that are positioned at cathode layer with anode layer, enhancement mode auxiliary electrode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, the E font opening direction also level crossing relative to cathode layer of enhancement mode auxiliary electrode layer, is isolated by insulated column between enhancement mode auxiliary electrode layer and cathode layer；Described enhancement mode auxiliary electrode layer extends as auxiliary electrode layer connection to EML luminescent layer, extends into the auxiliary electrode layer in EML luminescent layer by insulated column and the isolation of EML luminescent layer。
2. OLED illumination panel according to claim 1, it is characterised in that described cathode layer is metallic aluminium。
The auxiliary electrode of 3.OLED illumination panel, it is characterized in that, including the first auxiliary electrode being connected with ito anode and the second auxiliary electrode being positioned at metal cathode layer, described cathode layer includes the strip shaped electric poles of parallel distribution, one end of electrode is connected and forms E font, second auxiliary electrode shape is identical with cathode layer shape, and arranges with cathode layer cross parallel in opposite directions；First auxiliary electrode shape is identical with the second auxiliary electrode shape, and extends to EML luminescent layer from ito anode and cathode layer respectively and contact with each other, and extends into the first auxiliary electrode in EML luminescent layer by insulated column and the isolation of EML luminescent layer；Isolated by insulated column between cathode layer and the second auxiliary electrode layer。
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| CN201410175878.9A CN103956376B (en) | 2014-04-28 | 2014-04-28 | A kind of OLED illumination panel and auxiliary electrode thereof |
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| CN201410175878.9A CN103956376B (en) | 2014-04-28 | 2014-04-28 | A kind of OLED illumination panel and auxiliary electrode thereof |
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| CN103956376A CN103956376A (en) | 2014-07-30 |
| CN103956376B true CN103956376B (en) | 2016-06-22 |
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| US9966556B2 (en) * | 2014-12-15 | 2018-05-08 | Lg Display Co., Ltd. | Organic light-emitting device having a compensation resistance part electrically connected to the auxiliary electrode |
| CN109728029B (en) * | 2017-10-31 | 2021-03-30 | 云谷（固安）科技有限公司 | Display panel and terminal |
| CN108767136B (en) * | 2018-06-05 | 2020-06-30 | 京东方科技集团股份有限公司 | Mirror display screen and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330131A (en) * | 2007-06-20 | 2008-12-24 | 中国南玻集团股份有限公司 | Organic electroluminescent display device, transparent conductive film substrate and preparation method |
| CN101968948A (en) * | 2010-09-20 | 2011-02-09 | 四川虹视显示技术有限公司 | Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel |
| CN102034852A (en) * | 2010-10-26 | 2011-04-27 | 四川虹视显示技术有限公司 | OLED (Organic Light Emitting Diode) illumination panel |
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| KR100740035B1 (en) * | 2005-10-18 | 2007-07-16 | 주식회사 대우일렉트로닉스 | Method for fabricating the electrode pattern of OLED display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330131A (en) * | 2007-06-20 | 2008-12-24 | 中国南玻集团股份有限公司 | Organic electroluminescent display device, transparent conductive film substrate and preparation method |
| CN101968948A (en) * | 2010-09-20 | 2011-02-09 | 四川虹视显示技术有限公司 | Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel |
| CN102034852A (en) * | 2010-10-26 | 2011-04-27 | 四川虹视显示技术有限公司 | OLED (Organic Light Emitting Diode) illumination panel |
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