CN101968948B - Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel - Google Patents
Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel Download PDFInfo
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- CN101968948B CN101968948B CN2010102874651A CN201010287465A CN101968948B CN 101968948 B CN101968948 B CN 101968948B CN 2010102874651 A CN2010102874651 A CN 2010102874651A CN 201010287465 A CN201010287465 A CN 201010287465A CN 101968948 B CN101968948 B CN 101968948B
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Abstract
The invention relates to an auxiliary electrode structure for an organic light emitting diode (OLED) illuminating panel and provides an auxiliary electrode structure with low impedance, small current pressure reduction and high uniformity for an OLED illuminating panel, which belongs to the technical field of the manufacturing of illuminating panels. The auxiliary electrode structure for the OLED illuminating panel comprises an anode layer, a cathode layer, a luminous layer and an auxiliary electrode, wherein the anode layer is positioned on a lower part of the auxiliary electrode structure; the cathode layer is positioned on an upper part of the auxiliary electrode structure; the luminous layer and the auxiliary electrode are positioned between the anode layer and the cathode layer; the anode layer consists of transparent anodes; the cathode layer consists of metal cathodes; the auxiliary electrodes are communicated with one another and communicated with the transparent anodes; each auxiliary electrode passes through the luminous layer and extends into the cathode layer; and an insulating isolation post for isolating the auxiliary electrode from the metal cathode is arranged between the auxiliary electrode and the metal cathode.
Description
Technical field
The present invention relates to a kind of auxiliary electrode structure of the OLED of being used for illumination panel, belong to illumination panel manufacturing technology field.
Background technology
Existing OLED illumination panel auxiliary electrode structure is by the transparent anode layer; Luminescent layer and metallic cathode layer are formed, and said anode layer is made up of transparent anode, and said cathode layer is made up of metallic cathode; Because the resistance of transparent anode side is bigger; Be about 10 Ω/, current voltage drop is serious, causes illumination panel that tangible brightness irregularities phenomenon is arranged.For improving the unevenness of illumination panel brightness, people have proposed a lot of schemes, and all being basically increases to be communicated with said transparent anode on the transparent anode layer; And the auxiliary electrode that is interconnected between self because side's resistance of auxiliary electrode is less, is about 1 Ω/; Current voltage drop reduces; During energising, the impedance and the current voltage drop of the transparent anode of panel are reduced, brightness uniformity is improved.In the prior art; The auxiliary electrode that increases is the reticulate texture that is interconnected on the transparent anode layer; Its underpart is communicated with said transparent anode; Top is positioned at luminescent layer, so whole auxiliary electrode is less along the thickness of thickness of illuminated direction, the effect of improving of counter plate brightness uniformity receives than limitations; In addition, because auxiliary electrode is opaque, light can't pass; Therefore after increasing auxiliary electrode, be positioned at the light that the luminescent layer of auxiliary electrode top sends and get into the transparent anode layer, thereby reduced the glazed area of panel; Promptly reduced the aperture opening ratio of panel, like this, obtain identical brightness just needs higher driving voltage; The corresponding increase of power consumption, heating increases, and the life-span reduces.
Summary of the invention
Technical matters to be solved by this invention is: the auxiliary electrode structure that is used for the OLED illumination panel that a kind of impedance is littler, current voltage drop is littler, brightness uniformity is higher is provided.
The technical scheme that adopts for solving the problems of the technologies described above is: the auxiliary electrode structure that is used for the OLED illumination panel; Comprise the anode layer in the bottom, superposed cathode layer, the luminescent layer between said anode layer and said cathode layer; Said anode layer is made up of transparent anode; Said cathode layer is made up of metallic cathode, is interconnected between the said auxiliary electrode self and is communicated with described transparent anode, and said auxiliary electrode passes said luminescent layer and stretches in the said cathode layer; Between auxiliary electrode and metallic cathode, has the insulation insulated column that said auxiliary electrode and said metallic cathode are separated.
Further be that said auxiliary electrode stretches into the part of said cathode layer and passes said cathode layer, the flush of its top and said cathode layer; Said auxiliary electrode and metallic cathode are along the horizontal list structure of said OLED illumination panel, and said insulated column is reticulate texture; Between adjacent two strip auxiliary electrodes, be followed successively by insulation insulated column, metallic cathode and insulation insulated column; A said end that is the auxiliary electrode of list structure is communicated with in an edge of said panel, and an end of the metallic cathode of said list structure is communicated with on the relative one side, limit that is communicated with said auxiliary electrode of said panel.
Said auxiliary electrode stretches into the part of said cathode layer and passes said cathode layer, the flush of its top and said cathode layer; Said auxiliary electrode and metallic cathode are along the vertical list structure of said OLED illumination panel, and said insulated column is reticulate texture; Between adjacent two strip auxiliary electrodes, be followed successively by insulation insulated column, metallic cathode and insulation insulated column; A said end that is the auxiliary electrode of list structure is communicated with in an edge of said panel, and an end of the metallic cathode of said list structure is communicated with on the relative one side, limit that is communicated with said auxiliary electrode of said panel.
The invention has the beneficial effects as follows: thicken through the auxiliary electrode that will be communicated with and pass luminescent layer and extend in the cathode layer with transparent anode; Thereby increased the thickness of auxiliary electrode greatly; Reduce the impedance and the current voltage drop of transparent anode, improved the brightness uniformity of panel effectively; Simultaneously, because the auxiliary electrode impedance reduces, obtain identical brightness needs consumed current littler, and voltage is also lower, and the heat that produces during illumination panel work reduces thereupon, has reduced the requirement to heat radiation.Further auxiliary electrode is processed laterally or vertically being arranged in the panel along panel behind the list structure; Increased light that luminescent layer sends lighting area, promptly increased the aperture opening ratio of panel, made the driving voltage that will obtain identical brightness and need reduce through the transparent anode layer; The corresponding reduction of power consumption; Heating reduces, and material aging slows down, and prolong device lifetime.
Description of drawings
Fig. 1 is used for the front view of the auxiliary electrode structure of OLED illumination panel for the present invention;
Fig. 2 is used for the A-A view of the auxiliary electrode structure of OLED illumination panel for the present invention.
Be labeled as among the figure: anode layer 1, transparent anode 11, luminescent layer 2, metallic cathode layer 3, metallic cathode 31, auxiliary electrode 4, insulated column 5.
Embodiment
As Fig. 1, shown in Figure 2 be the auxiliary electrode structure that is used for the OLED illumination panel that a kind of impedance provided by the invention is little, current voltage drop is little, brightness uniformity is high.Said auxiliary electrode structure comprises anode layer 1, superposed cathode layer 3, the luminescent layer 2 between said anode layer 1 and said cathode layer 3 in the bottom; Said anode layer 1 is made up of transparent anode 11; Said cathode layer is made up of metallic cathode 31; Be interconnected between the said auxiliary electrode 4 self and be communicated with described transparent anode 11, it is characterized in that: said auxiliary electrode 4 passes said luminescent layer 2 and stretches in the said cathode layer 3; Between auxiliary electrode 4 and metallic cathode 31, has the insulation insulated column 5 that said auxiliary electrode 4 and said metallic cathode 31 are separated.Like this; Thicken through the auxiliary electrode 4 that will be communicated with and to pass luminescent layer 2 and extend in the cathode layer 3 with transparent anode 11; Increase the thickness of auxiliary electrode 4 greatly, reduced the impedance and the current voltage drop of anode layer 1, improved the brightness uniformity of panel effectively; Simultaneously, because the auxiliary electrode impedance reduces, obtain identical brightness needs consumed current littler, and voltage is also lower, and the heat that produces during illumination panel work reduces thereupon, has reduced the requirement to heat radiation.
In the above-described embodiment, when said auxiliary electrode 4 stretches into cathode layer 3, can only penetrate a part; At this moment, the structure that is interconnected of auxiliary electrode 4 self can be netted connectivity structure, and cathode layer 3 is to have and the suitable meshed grooves structure of said netted connectivity structure with luminescent layer 2 contacted sides; But this structure is owing to the thickness limits of luminescent layer 2, and the thickness of whole auxiliary electrode 4 increases few; To reducing the impedance of anode layer 1, and then reducing current voltage drop, to improve the effect that brightness uniformity rose of panel limited, simultaneously; The panel aperture opening ratio does not change yet, and is also little to the brightness uniformity role that improves whole front panel.For the impedance that reduces anode layer 1 to greatest extent, the aperture opening ratio of increase panel improve the brightness uniformity of panel, the part that said auxiliary electrode 4 stretches into said cathode layer 3 is passed said cathode layer 3, the flush of its top and said cathode layer 3; Said auxiliary electrode 4 is along the horizontal list structure of said OLED illumination panel with metallic cathode 3, and said insulated column 5 is reticulate texture; Between adjacent two strip auxiliary electrodes 4, be followed successively by insulation insulated column 5, metallic cathode 31 and insulation insulated column 5; A said end that is the auxiliary electrode 4 of list structure is communicated with in an edge of said panel, and an end of the metallic cathode 31 of said list structure is communicated with on the relative one side, limit that is communicated with said auxiliary electrode 4 of said panel.Like this; The part that makes auxiliary electrode 4 stretch into cathode layer 3 is passed described cathode layer 3, thereby has increased the thickness of auxiliary electrode 4 to greatest extent, reaches the purpose of the impedance that reduces anode layer 1 to greatest extent; Simultaneously; After said cancellated auxiliary electrode 4 changes list structure into, can also effectively increase the aperture opening ratio of panel, improve the overall brightness of panel.
In the above-mentioned embodiment, the auxiliary electrode 4 that is list structure and metallic cathode 31 be along the panel lateral arrangement, still, the layout as long as the said auxiliary electrode 4 that is list structure and metallic cathode 31 are parallel to each other, it also can be along vertical layout in panel inside.
Claims (3)
1. the auxiliary electrode structure that is used for the OLED illumination panel; Comprise the anode layer (1) that is positioned at the bottom, superposed cathode layer (3), be positioned at the luminescent layer (2) between said anode layer (1) and the said cathode layer (3); Said anode layer (1) is made up of transparent anode (11) and auxiliary electrode (4); Said cathode layer is made up of metallic cathode (31); Be interconnected between the said auxiliary electrode (4) self and be communicated with described transparent anode (11), it is characterized in that: said auxiliary electrode (4) passes said luminescent layer (2) and stretches in the said cathode layer (3); Between auxiliary electrode (4) and metallic cathode (31), has the insulation insulated column (5) that said auxiliary electrode (4) and said metallic cathode (31) are separated.
2. the auxiliary electrode structure that is used for the OLED illumination panel according to claim 1 is characterized in that: said auxiliary electrode (4) stretches into the part of said cathode layer (3) and passes said cathode layer (3), the flush of its top and said cathode layer (3); Said auxiliary electrode (4) and metallic cathode (3) are along the horizontal list structure of said OLED illumination panel, and said insulated column (5) is reticulate texture; Between adjacent two strip auxiliary electrodes (4), be followed successively by insulation insulated column (5), metallic cathode (31) and insulation insulated column (5); A said end that is the auxiliary electrode (4) of list structure is communicated with in an edge of said panel, and an end of the metallic cathode of said list structure (31) is communicated with on the relative one side, limit that is communicated with said auxiliary electrode (4) of said panel.
3. the auxiliary electrode structure that is used for the OLED illumination panel according to claim 1 is characterized in that: said auxiliary electrode (4) stretches into the part of said cathode layer (3) and passes said cathode layer (3), the flush of its top and said cathode layer (3); Said auxiliary electrode (4) and metallic cathode (3) are along the vertical list structure of said OLED illumination panel, and said insulated column (5) is reticulate texture; Between adjacent two strip auxiliary electrodes (4), be followed successively by insulation insulated column (5), metallic cathode (31) and insulation insulated column (5); A said end that is the auxiliary electrode (4) of list structure is communicated with in an edge of said panel, and an end of the metallic cathode of said list structure (31) is communicated with on the relative one side, limit that is communicated with said auxiliary electrode (4) of said panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102874651A CN101968948B (en) | 2010-09-20 | 2010-09-20 | Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102874651A CN101968948B (en) | 2010-09-20 | 2010-09-20 | Auxiliary electrode structure for organic light emitting diode (OLED) illuminating panel |
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| Publication Number | Publication Date |
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| CN101968948A CN101968948A (en) | 2011-02-09 |
| CN101968948B true CN101968948B (en) | 2012-05-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102222684B (en) * | 2011-06-30 | 2013-08-07 | 信利半导体有限公司 | Organic electroluminescent display and manufacture method thereof |
| CN103956376B (en) * | 2014-04-28 | 2016-06-22 | 四川虹视显示技术有限公司 | A kind of OLED illumination panel and auxiliary electrode thereof |
| CN104269494B (en) | 2014-09-15 | 2017-05-03 | 京东方科技集团股份有限公司 | Organic electroluminescent device, manufacturing method thereof and display device |
| CN106252525B (en) * | 2016-08-26 | 2018-03-27 | 京东方科技集团股份有限公司 | OLED and preparation method, display panel and display device |
| CN106848103B (en) * | 2017-03-30 | 2020-07-17 | 昆山维信诺科技有限公司 | O L ED substrate, manufacturing method thereof and display device |
| CN107331789B (en) * | 2017-07-10 | 2019-04-30 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN109148527B (en) * | 2018-08-17 | 2020-11-27 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN110176550B (en) * | 2019-06-18 | 2021-12-07 | 京东方科技集团股份有限公司 | Preparation method of packaging cover plate, display panel and display device |
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| US6626721B1 (en) * | 2000-09-22 | 2003-09-30 | Eastman Kodak Company | Organic electroluminescent device with supplemental cathode bus conductor |
| US7105999B2 (en) * | 2002-07-05 | 2006-09-12 | Lg.Philips Lcd Co., Ltd. | Organic electroluminescent display device and method of fabricating the same |
| WO2005008801A1 (en) * | 2003-07-16 | 2005-01-27 | Philips Intellectual Property & Standards Gmbh | Electroluminescent device with uniform brightness |
| WO2007102103A1 (en) * | 2006-03-09 | 2007-09-13 | Philips Intellectual Property & Standards Gmbh | Lighting elements with segmented electrodes |
| DE102006016373A1 (en) * | 2006-04-05 | 2007-10-11 | Merck Patent Gmbh | Large area OLEDs with homogeneous light emission |
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