CN102074570A - OLED (Organic Light-Emitting Diode) lighting panel and auxiliary electrode arrangement structure thereof - Google Patents
OLED (Organic Light-Emitting Diode) lighting panel and auxiliary electrode arrangement structure thereof Download PDFInfo
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- CN102074570A CN102074570A CN 201010590258 CN201010590258A CN102074570A CN 102074570 A CN102074570 A CN 102074570A CN 201010590258 CN201010590258 CN 201010590258 CN 201010590258 A CN201010590258 A CN 201010590258A CN 102074570 A CN102074570 A CN 102074570A
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Abstract
The invention discloses an OLED (Organic Light-Emitting Diode) lighting panel capable of improving light emitting efficiency and an auxiliary electrode arrangement structure thereof. The arrangement structure comprises an auxiliary electrode on a rectangular anode layer; the auxiliary electrode is composed of auxiliary electrode bars which are uniformly arranged on the rectangular anode layer at intervals; the auxiliary electrode bars are composed of base bars and protruding bars, wherein the protruding bars are arranged uniformly along the base bars and crossed with the base bars; the protruding bars of two adjacent auxiliary electrode bars are staggered with each other; the included angle alpha between the central lines of the auxiliary electrode bars and the long side of the rectangular anode layer is an acute angle; the OLED lighting panel is composed of at least two rectangular OLED lighting units with the same size but different auxiliary electrode arrangement structures, wherein the two rectangular OLED lighting units are in seamless connection. The rectangular OLED lighting units are provided with the preceding auxiliary electrode arrangement structures; the rectangular OLED lighting units are capable of improving the lighting efficiency, capable of ensuring luminance uniformity, and capable of acquiring a larger light emitting area by the inclined arrangement of the auxiliary electrode bars, thereby improving the light emitting efficiency.
Description
Technical field
The present invention relates to a kind of oled panel, the auxiliary electrode arrangement of the transparent anode of especially this oled panel.
Background technology
Existing OLED illumination panel is usually by anode layer, luminescent layer and cathode layer are formed, described anode layer is made of transparent anode, described cathode layer is made of metallic cathode, because the resistance of transparent anode side is bigger, is about 10 Ω/mouths, voltage drop is serious, general OLED face is luminous to be obvious more from the place voltage drop phenomenon far away more of power supply supply, causes illumination panel that tangible brightness irregularities phenomenon is arranged.
For improving the inhomogeneities of illumination panel brightness, people have proposed a lot of schemes, basically all be on the transparent anode layer, to increase to be communicated with described transparent anode, and the auxiliary electrode that is interconnected between self, auxiliary electrode is made by conducting metal, side's resistance is less, be about 1 Ω/mouth, current voltage drop reduces, during energising, the impedance and the current voltage drop of the transparent anode of panel are reduced, and brightness uniformity is improved.The OLED illumination panel mostly is rectangle, anode layer also is a rectangle, in the prior art, the auxiliary electrode arrangement that it adopts is generally grid square shape and arranges, be that described auxiliary electrode is vertical bar shaped, evenly the compartment of terrain is arranged on the rectangle anode layer of transparent anode formation, and auxiliary electrode is communicated with transparent anode, and each bar auxiliary electrode is parallel to wherein limit of rectangle anode layer.
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 enter the transparent anode layer, the light-emitting area of counter plate has adverse influence, and, at the position that does not have auxiliary electrode, local impedance is still higher, causes luminous efficiency lower.
Summary of the invention
Unreasonable for the auxiliary electrode arrangement that overcomes existing OLED illumination panel, the deficiency that luminous efficiency is lower, technical problem to be solved by this invention provide improved OLED illumination panel of a kind of luminous efficiency and auxiliary electrode arrangement thereof.
The technical solution adopted for the present invention to solve the technical problems is: the auxiliary electrode arrangement of OLED illumination panel, comprise the auxiliary electrode on the rectangle anode layer, auxiliary electrode is communicated with the transparent anode that constitutes the rectangle anode layer, auxiliary electrode is made up of the auxiliary electrode bar, each auxiliary electrode bar compartment of terrain is arranged on the rectangle anode layer, described auxiliary electrode bar is formed by basic bar and along the even layout of basic bar and with the protrusion bar of basic bar arranged crosswise, and the protrusion bar of adjacent two auxiliary electrode bars staggers mutually.
The angle α that acute angle is arranged between the long limit of the center line of described auxiliary electrode bar and rectangle anode layer, α ∈ (0,90), the unit of α is degree.
Described angle α ∈ [40,50].
Described angle α=45 °.
The OLED illumination panel, size is identical but rectangle OLED lighting unit seamless link that the auxiliary electrode arrangement is different is formed by at least two kinds for this panel, in described each rectangle OLED lighting unit, auxiliary electrode is formed by the auxiliary electrode bar that even compartment of terrain is arranged on the rectangle anode layer, each auxiliary electrode bar is also all formed by basic bar and along the even layout of basic bar and with the protrusion bar of basic bar arranged crosswise, the protrusion bar of adjacent two auxiliary electrode bars staggers mutually, but the acute angle angle α between the long limit of the center line of the auxiliary electrode bar of every kind of rectangle OLED lighting unit and rectangle anode layer is unequal.
This panel is formed by two kinds of identical rectangle OLED lighting unit seamless link and arranged crosswise of size, wherein a kind of center line of auxiliary electrode bar of rectangle OLED lighting unit is parallel with the long limit of rectangle anode layer, between the center line of the auxiliary electrode bar of another kind of rectangle OLED lighting unit and the long limit of rectangle anode layer angle α is arranged, α ∈ (0,90).
The invention has the beneficial effects as follows: by changing the arrangement of auxiliary electrode on the rectangle anode layer, reduce local anode impedance, improve luminous efficiency, improve the brightness uniformity of OLED illumination panel simultaneously, in addition, also can utilize oblique the arranging of auxiliary electrode bar to obtain bigger light-emitting area, further improve luminous efficiency.
Description of drawings
Fig. 1 isThe structural representation of OLED illumination panel.
Fig. 2 is the auxiliary electrode arrangement schematic diagram of existing OLED illumination panel.
Fig. 3 is the auxiliary electrode arrangement schematic diagram of OLED illumination panel of the present invention.
Fig. 4 is another schematic diagram of the auxiliary electrode arrangement of OLED illumination panel of the present invention.
Fig. 5 is the schematic diagram of OLED illumination panel of the present invention.
Be labeled as 1-cathode layer, 2-luminescent layer, 3-auxiliary electrode, 4-rectangle anode layer among the figure, the long limit of 5-, 6-auxiliary electrode bar, 7-base bar, 8-protrudes bar, 9-rectangle OLED lighting unit, 10-rectangle OLED lighting unit, in the α-angle, this specification, the unit degree of being of α.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, auxiliary electrode arrangement used in the prior art is generally grid square shape and arranges, be that described auxiliary electrode 3 is vertical bar shaped, evenly the compartment of terrain is arranged on the rectangle anode layer 4 of transparent anode formation, and each bar auxiliary electrode 3 is parallel to wherein limit of rectangle anode layer 4.
As shown in Figure 3, Figure 4, the auxiliary electrode arrangement of OLED illumination panel of the present invention comprises the auxiliary electrode on the rectangle anode layer 4, auxiliary electrode is communicated with the transparent anode that constitutes rectangle anode layer 4, auxiliary electrode is made up of auxiliary electrode bar 6, each auxiliary electrode bar 6 even compartment of terrain is arranged on the rectangle anode layer 4, described auxiliary electrode bar 6 is formed by basic bar 7 and along basic bar 7 even layouts and with the protrusion bar 8 of basic bar 7 arranged crosswise, and the protrusion bar 8 of adjacent two auxiliary electrode bars 6 staggers mutually.By the basic bar 7 of reasonable decision auxiliary electrode bar 6 and the width of protrusion bar 8, and the distribution density of protrusion bar 8 on basic bar 7, and the distribution density of auxiliary electrode bar 6 on rectangle anode layer 4, compare with existing arrangement, can more effectively carry out impedance and distribute, reduce local anode impedance, improve luminous efficiency, improve brightness uniformity simultaneously, form homogeneous light emitting area.
Further be, as shown in Figure 3, Figure 4, between the long limit 5 of the center line of described auxiliary electrode bar 6 and rectangle anode layer 4 angle α is arranged, α ∈ (0,90), the unit of α is degree, so, can utilize the oblique of auxiliary electrode bar 6 to arrange, under the suitable situation of uniformity, bigger light-emitting area be arranged, thereby improved luminous efficiency.Through drawing after inventor's the quantitative analysis: in the distribution density of auxiliary electrode under the identical and auxiliary electrode bar 6 equally distributed situations as drawing a conclusion, be under the shape of auxiliary electrode bar 6 and the situation that spacing remains unchanged, when making the limit of the center line of auxiliary electrode bar 6 and rectangle anode layer 4 that certain angle be arranged, light-emitting area when its light-emitting area can be than the perpendicular or parallel limit in rectangle anode layer 4 of the center line of auxiliary electrode bar 6 is big, thereby the raising luminous efficiency, this is that many people are unexpected.Certainly, same conclusion when being square shape, rectangle anode layer 4 is also arranged.
Preferred described angle α ∈ [40,50].
In addition, can calculate by mathematics and verify out that the best number of degrees of angle α are 45 °, at this moment, the light-emitting area maximum of increase.
As shown in Figure 5, size is identical but rectangle OLED lighting unit seamless link that the auxiliary electrode arrangement is different is formed by at least two kinds for OLED illumination panel of the present invention, in described each rectangle OLED lighting unit, auxiliary electrode is formed by the auxiliary electrode bar 6 that even compartment of terrain is arranged on the rectangle anode layer 4, each auxiliary electrode bar 6 is also all formed by basic bar 7 and along basic bar 7 even layouts and with the protrusion bar 8 of basic bar 7 arranged crosswise, the protrusion bar 8 of adjacent two auxiliary electrode bars 6 staggers mutually, but the acute angle angle α between the long limit 5 of the center line of the auxiliary electrode bar 6 of every kind of rectangle OLED lighting unit and rectangle anode layer 4 is unequal.Because the basic bar 7 of auxiliary electrode bar 6 is what to be intersected with protruding bar 8, the position of the protrusion bar 8 on the adjacent basic bar 7 interlocks, multiple rectangle OLED lighting unit is rationally arranged, can form more homogeneous light emitting area, and when conduction current, than broad higher efficient be arranged because of auxiliary electrode bar 6 local area.
Embodiment:
With reference to figure 5, certain OLED illumination panel is formed by two kinds of identical 9,10 seamless links of rectangle OLED lighting unit and arranged crosswise of size, angle α=0 ° is arranged between the wherein a kind of center line of auxiliary electrode bar 6 of rectangle OLED lighting unit 9 and the long limit 5 of rectangle anode layer 4, angle α=45 ° are arranged between the center line of the auxiliary electrode bar 6 of another kind of rectangle OLED lighting unit 10 and the long limit 5 of rectangle anode layer 4.
OLED illumination panel with above-mentioned arrangement, base bar 7 is what to be intersected with protruding bar 8, the position of the protrusion bar 8 on the adjacent basic bar 7 interlocks, two kinds of rectangle OLED lighting units are rationally arranged, can form more homogeneous light emitting area, and when conduction current, than broad higher efficient be arranged because of auxiliary electrode bar 6 local area.
Claims (6)
1.OLED the auxiliary electrode arrangement of illumination panel, comprise the auxiliary electrode on the rectangle anode layer (4), auxiliary electrode is communicated with the transparent anode that constitutes rectangle anode layer (4), auxiliary electrode is made up of auxiliary electrode bar (6), each auxiliary electrode bar (6) evenly is arranged on the rectangle anode layer (4) compartment of terrain, it is characterized in that: described auxiliary electrode bar (6) arranges evenly and forms with the protrusion bar (8) of basic bar (7) arranged crosswise that by basic bar (7) and along basic bar (7) the protrusion bar (8) of adjacent two auxiliary electrode bars (6) staggers mutually.
2. the auxiliary electrode arrangement of OLED illumination panel as claimed in claim 1 is characterized in that: the angle α of acute angle is arranged between the long limit (5) of the center line of described auxiliary electrode bar (6) and rectangle anode layer (4), and α ∈ (0,90), the unit of α is degree.
3. the auxiliary electrode arrangement of OLED illumination panel as claimed in claim 2 is characterized in that: described angle α ∈ [40,50].
4. the auxiliary electrode arrangement of OLED illumination panel as claimed in claim 3 is characterized in that: described angle α=45 °.
5.OLED illumination panel, it is characterized in that: size is identical but rectangle OLED lighting unit seamless link that the auxiliary electrode arrangement is different is formed by at least two kinds for this panel, in described each rectangle OLED lighting unit, auxiliary electrode is formed by the auxiliary electrode bar (6) that even compartment of terrain is arranged on the rectangle anode layer (4), each auxiliary electrode bar (6) is also all evenly arranged and is formed with the protrusion bar (8) of basic bar (7) arranged crosswise by basic bar (7) and along basic bar (7), the protrusion bar (8) of adjacent two auxiliary electrode bars (6) staggers mutually, but the angle α between the long limit (5) of the center line of the auxiliary electrode bar (6) of every kind of rectangle OLED lighting unit and rectangle anode layer (4) is unequal.
6. OLED illumination panel as claimed in claim 5, it is characterized in that: this panel is formed by two kinds of identical (9, the 10) seamless link of rectangle OLED lighting unit and arranged crosswise of size, the center line of the auxiliary electrode bar (6) of wherein a kind of rectangle OLED lighting unit (9) is parallel with the long limit (5) of rectangle anode layer (4), between the center line of the auxiliary electrode bar (6) of another kind of rectangle OLED lighting unit (10) and the long limit (5) of rectangle anode layer (4) angle α is arranged, α ∈ (0,90).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010590258A CN102074570B (en) | 2010-12-15 | 2010-12-15 | OLED (Organic Light-Emitting Diode) lighting panel and auxiliary electrode arrangement structure thereof |
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| CN201010590258A CN102074570B (en) | 2010-12-15 | 2010-12-15 | OLED (Organic Light-Emitting Diode) lighting panel and auxiliary electrode arrangement structure thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9620732B2 (en) | 2015-01-16 | 2017-04-11 | Cambridge Display Technology, Ltd. | Method of forming a light-emitting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060181664A1 (en) * | 2000-04-19 | 2006-08-17 | Jang-Jin Yoo | In-plane switching LCD panel |
| CN101165941A (en) * | 2006-10-17 | 2008-04-23 | Lg电子株式会社 | Light emitting panel and light source comprising the same |
| CN201946240U (en) * | 2010-12-15 | 2011-08-24 | 四川虹视显示技术有限公司 | Organic light emitting diode (OLED) illuminating panel and auxiliary electrode configuration structure of same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060181664A1 (en) * | 2000-04-19 | 2006-08-17 | Jang-Jin Yoo | In-plane switching LCD panel |
| CN101165941A (en) * | 2006-10-17 | 2008-04-23 | Lg电子株式会社 | Light emitting panel and light source comprising the same |
| CN201946240U (en) * | 2010-12-15 | 2011-08-24 | 四川虹视显示技术有限公司 | Organic light emitting diode (OLED) illuminating panel and auxiliary electrode configuration structure of same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9620732B2 (en) | 2015-01-16 | 2017-04-11 | Cambridge Display Technology, Ltd. | Method of forming a light-emitting device |
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| CN102074570B (en) | 2012-10-03 |
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