CN106098739A - A kind of OLED illumination panel and preparation method thereof - Google Patents
A kind of OLED illumination panel and preparation method thereof Download PDFInfo
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- CN106098739A CN106098739A CN201610584557.3A CN201610584557A CN106098739A CN 106098739 A CN106098739 A CN 106098739A CN 201610584557 A CN201610584557 A CN 201610584557A CN 106098739 A CN106098739 A CN 106098739A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The invention discloses a kind of OLED illumination panel and preparation method thereof, including metal grill auxiliary electrode, metallic bone electrode and the first nesa coating.Described metallic bone electrode makes the luminous point in each metal grill separate.One end of described first nesa coating is connected by contact metal overlap joint electrode, and metallic bone electrode is connected with metal grill auxiliary electrode, and the other end of described first nesa coating and the second nesa coating connect.The present invention reduces direction according to voltage, the i.e. distance of lighting unit distance anode exit, the live width of appropriate design the first nesa coating and length, it is achieved different resistance values, effectively compensate for the luminance non-uniformity caused because of voltage drop, it is achieved that the uniformity of luminance of OLED illumination panel.
Description
Technical field
The present invention relates to illumination panel manufacturing technology field, be specially a kind of OLED illumination panel and preparation method thereof.
Background technology
Existing OLED illumination panel is made up of nesa coating anode, organic luminous layer and metal cathode layer.Due to transparent
Anode square resistance is relatively big, causes whole illumination panel in the voltage drop away from anode tap it is obvious that typically can reach 0.1V
0.5V, and when OLED is operated between high luminance area, the pressure drop of usual 0.1V may result in thousands of cd/m2Brightness decline, result in
Illumination panel has obvious brightness irregularities phenomenon.For improving the inhomogeneities of illumination panel brightness, there has been proposed a lot of side
Case, is essentially all on transparent anode layer increase and connects the metal auxiliary electrode distributed as net shape with transparent anode, due to
The square resistance of metal auxiliary electrode is less, typically about 0.5 Ω/mouth so that in whole panel, voltage drop reduces, but increases
The metal grill auxiliary electrode added can not be inherently eliminated the irregularity in brightness of illumination panel, especially large scale illumination
Panel and flexible light panel.For large size panel, although multiple anode can be arranged around panel, but due to size
Relatively big, panel mid portion pressure drop is the most clearly；For flexible light panel, in order to meet flexual demand, voltage draws
Go out end and be typically distributed across panel one side or certain both sides, thus cause the region pressure drop away from anode voltage exit obvious.
As shown in Figure 6 and Figure 7, the generally square grid of auxiliary electrode arrangement used in the prior art row
Cloth, and the transparent anode of panel is linked to be whole piece.The anode exit of prior art and the negative electrode of prior art on panel
Exit can be located at panel both sides (such as Fig. 6) or four limits (such as Fig. 7), and general anode exit is at panel periphery distributed quantity more
Many, panel can be the most uniform.The direction of arrow in Fig. 6 and Fig. 7, voltage is to decline, and this will certainly cause whole luminescent panel
Brightness can along with the direction of arrow decline.
Therefore, not enough for prior art, it is provided that a kind of OLED illumination panel and preparation method thereof is to overcome illumination panel
The problem of brightness disproportionation is the most necessary.
Summary of the invention
It is an object of the invention to provide a kind of OLED illumination panel and preparation method thereof, to solve in above-mentioned background technology
The problem proposed.
For achieving the above object, the present invention provides following technical scheme:
A kind of OLED illumination panel, including substrate, the upper surface of substrate is closely fitted with SiO2Cushion, SiO2Cushion
Upper surface be provided with metal grill auxiliary electrode, be positioned in each mesh of described metal grill auxiliary electrode and be equipped with illumination
Unit, and lighting unit electrically connects with metal grill auxiliary electrode, substrate is provided with exit, and exit respectively with metal grill
Auxiliary electrode and lighting unit electrical connection.
Lighting unit include metallic bone electrode, the first insulating barrier, contact hole, the first nesa coating, the second insulating barrier,
Second nesa coating, organic layer and metallic cathode, metallic bone electrode is connected with metal grill auxiliary electrode, and metallic bone
The upper surface of electrode is closely fitted with the first insulating barrier, and the first insulating barrier is provided with contact hole, and contact hole is positioned at metallic bone
The top of electrode, the upper surface of the first insulating barrier is closely fitted with the first nesa coating and the second nesa coating, and adjacent
Between two lighting units the resistance of the first nesa coating along voltage reduce direction reduce, one end of the first nesa coating with
Second nesa coating connects, and the other end of the first nesa coating is connected through contact hole with metallic bone electrode, and first is saturating
The upper surface of bright conducting film is provided with the second insulating barrier, and the upper surface of the second nesa coating is closely fitted with organic layer, organic layer
Upper surface be closely fitted with metallic cathode.
The quantity of described exit is one, and exit includes anode exit and cathode end, and anode is drawn
End and cathode end are individually fixed in the two ends of the same sidewall of substrate, and cathode end electrically connects with metallic cathode, anode
Exit electrically connects with metal grill auxiliary electrode.
The quantity of described exit is two, and two exits are separately positioned on the two side of substrate, exit bag
Include anode exit and cathode end, and anode exit and cathode end are individually fixed in the two of the same sidewall of substrate
Holding, and cathode end electrically connects with metallic cathode, anode exit electrically connects with metal grill auxiliary electrode.
Described metal grill auxiliary electrode is by least in monolayer Al, Cu, Mo, Ti, Ag, Au, Ta, Cr or aluminium alloy
Layer is constituted.
Described first nesa coating is the metal-oxide made with sputtering method, or the carbon nanometer that solution methods makes
One in pipe, PEDOT and Ag nano wire.
Described first insulating barrier is by SiO2、Si3N4、Al2O3、Y2O3Or the dielectric film that polyimides is made, described second
The dielectric film that insulating barrier is made up of photoresist or polyimides.
Described metallic cathode uses at least one in Al, Cu, Mg, Ag or Au to make.
The manufacture method of a kind of OLED illumination panel concretely comprises the following steps:
The first step, makes SiO on substrate2Cushion；
Second step, at described SiO2Metallic bone electrode is deposited on cushion；
3rd step, depositing first insulator layer also etches contact hole；
4th step, deposits the first nesa coating and the second nesa coating, and graphical first nesa coating is formed
The compensation resistance of different resistance values between lighting unit；
5th step, deposits the second insulating barrier；
6th step, depositing organic；
7th step, deposits metallic cathode.
Specifically, in the first step, substrate is specially glass, PEN, PET, PI or metal forming,
Specifically, in second step, metallic bone electrode is specially single layer metal firms, or by monolayer Al, Cu, Mo, Ti,
The plural layers of any two-layer composition described above in Ag, Au, Ta, Cr or aluminium alloy,
Specifically, in the 3rd step, the first insulating barrier is specially SiO2、Si3N4、Al2O3、Y2O3Or polyimides makes
Dielectric film,
Specifically, in the 5th step, the dielectric film that the second insulating barrier is specially photoresist or polyimides (PI) is made,
Specifically, in the 7th step, metallic cathode is specially monolayer Al, Cu, Mg/Ag, Au thin film.
Compared with prior art, the invention has the beneficial effects as follows: metal grill auxiliary electrode and the metal in each grid
Overlap joint electrode connects so that panel intraoral illumination unit is separate, at each metal grill inner utilization the first nesa coating
Make wire, be connected on the second nesa coating of each lighting unit, by length and the width of appropriate design nesa coating
Degree, realizes different resistance values, constantly reduces the resistance value of the first nesa coating at the anode exit away from exit
Realize the uniformly light-emitting of whole OLED illumination panel.
Accompanying drawing explanation
Fig. 1 is the lighting unit domain of the present invention；
Fig. 2 is first embodiment of the present invention structural representation；
Fig. 3 is second embodiment of the present invention structural representation；
Fig. 4 is A-A profile in Fig. 1；
Fig. 5 is B-B profile in Fig. 1；
Fig. 6 is the structural representation of the first prior art；
Fig. 7 is the structural representation of the second prior art.
In figure: 1 substrate, 2SiO2Cushion, 3 metal grill auxiliary electrodes, 4 lighting units, 41 metallic bone electrodes, 42
First insulating barrier, 43 contact holes, 44 first nesa coatings, 45 second insulating barriers, 46 second nesa coatings, 47 organic layers,
48 metallic cathodes, 5 exits, 51 anode exits, 52 cathode ends, the exit of 6 prior art anodes and 7 prior aries
The exit of negative electrode, the direction of arrow represents the direction that illumination panel voltage declines.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further, but protection scope of the present invention is not limited to
This.
Embodiment 1:
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, a kind of OLED illumination panel, including substrate 1, the upper surface of substrate 1 closely pastes
Conjunction has SiO2Cushion 2, SiO2The upper surface of cushion 2 is provided with metal grill auxiliary electrode 3, described metal grill auxiliary electrode 3
It is to be made up of at least one of which in monolayer Al, Cu, Mo, Ti, Ag, Au, Ta, Cr or aluminium alloy, is positioned at described metal grill auxiliary
Help and each mesh of electrode 3 be equipped with lighting unit 4, lighting unit 4 include metallic bone electrode the 41, first insulating barrier 42,
Contact hole the 43, first nesa coating the 44, second insulating barrier the 45, second nesa coating 46, organic layer 47 and metallic cathode 48,
Metallic bone electrode 41 is connected with metal grill auxiliary electrode 3, and the upper surface of metallic bone electrode 41 is closely fitted with first
Insulating barrier 42, described first insulating barrier 42 made by photoresist or polyimides, and the first insulating barrier 42 is provided with contact hole
43, and contact hole 43 is positioned at the top of metallic bone electrode 41, it is transparent that the upper surface of the first insulating barrier 42 is closely fitted with first
Between conducting film 44 and the second nesa coating 46, and adjacent two lighting units 4, the resistance of the first nesa coating 44 prolongs electricity
The low direction of pressure drop reduces, and described first nesa coating 44 is the metal-oxide made with sputtering method, or solution methods system
One in the CNT of work, PEDOT and Ag nano wire, one end of the first nesa coating 44 and the second nesa coating 46
Connecting, the other end of the first nesa coating 44 is connected through contact hole 43 with metallic bone electrode 41, and metallic bone electrode
41 are connected with metal grill auxiliary electrode 3, and the upper surface of the first nesa coating 44 is provided with the second insulating barrier 45, described second exhausted
Edge layer 45 is made by photoresist or polyimides, and the upper surface of the second nesa coating 46 is closely fitted with organic layer 47,
The upper surface of organic layer 47 is closely fitted with metallic cathode 48, and described metallic cathode 48 uses in Al, Cu, Mg, Ag or Au extremely
Few one is made, and substrate 1 is provided with exit 5, and the quantity of described exit 5 is one, and exit 5 includes anode exit 51
With cathode end 52, and anode exit 51 and cathode end 52 be individually fixed in the two ends of the same sidewall of substrate 1, and cloudy
Pole exit 52 electrically connects with metallic cathode 48, and anode exit 51 electrically connects with metal grill auxiliary electrode 3.
When away from the anode exit 51 i.e. direction of arrow, the first nesa coating 42 in each of which lighting unit 4
Resistance is gradually reduced, and the method that resistance reduces is for increasing live width or reducing length, or both combinations, thus realizes illuminated area
The brightness uniformity of plate.
Further, it is assumed that illumination panel has M row N to arrange (M, N are natural numbers), as in figure 2 it is shown, the place that its pressure drop is maximum
Occur in the farthest position of panel distance anode exit 51, i.e. M row, in the grid of upper left corner the first row first row, first is saturating
Bright conducting film 42 is R11, in second grid of the first row, the first nesa coating 42 is R12, the resistance of the i-th row j row is successively
Rij, need to meet:
Ri1＞ Rij＞ Ri(j+1)＞ RiN(1≤i≤M, 1 ＜ j ＜ N-1) (1)
R1j＞ Rij＞ R(i+1)j＞ RMj(1 ＜ i ＜ M-1,1≤j≤N) (2)
Its manufacture method is illustrated in conjunction with Fig. 5:
The first step, makes SiO on substrate 12Cushion 2；
Second step, at described SiO2Metallic bone electrode 41 is deposited on cushion 2；
3rd step, depositing first insulator layer 42 also etches contact hole 43；
4th step, deposits the first nesa coating 44 and the second nesa coating 46, and graphical first nesa coating
44 form the compensation resistance of different resistance values between lighting unit 4；
5th step, deposits the second insulating barrier 45；
6th step, depositing organic 47；
7th step, deposits metallic cathode 48.
Specifically, in the first step, substrate 1 is specially glass, PEN, PET, PI or metal forming,
Specifically, in second step, metallic bone electrode 41 is specially single layer metal firms, or by monolayer Al, Cu, Mo,
The plural layers of any two-layer composition described above in Ti, Ag, Au, Ta, Cr or aluminium alloy,
Specifically, in the 3rd step, the first insulating barrier 42 is specially SiO2、Si3N4、Al2O3、Y2O3Or polyimides PI system
The dielectric film become,
Specifically, in the 5th step, the dielectric film that the second insulating barrier 45 specially photoresist or polyimides PI make,
Specifically, in the 7th step, metallic cathode 48 is specially monolayer Al, Cu, Mg/Ag, Au thin film.
In sum, the exit 5 of the present invention and be connected on the cooperation of the first nesa coating 44 of each lighting unit 4
Use, it is achieved that the uniformly light-emitting of whole OLED illumination panel.
Embodiment 2:
As it is shown on figure 3, the present embodiment contrasts with embodiment 1, the quantity of described exit 5 is two, and two extractions
End 5 is separately positioned on the two side of substrate 1, and exit 5 includes anode exit 51 and cathode end 52, and anode exit
51 and cathode end 52 be individually fixed in the two ends of the same sidewall of substrate 1, and cathode end 52 is electrically connected with metallic cathode 48
Connecing, anode exit 51 electrically connects with metal grill auxiliary electrode 3.
Region between the local generation in the panel that so its pressure drop is maximum.Therefore, the resistance of its first nesa coating 44
The condition met changes.
Further, it is assumed that illumination panel has M row N to arrange (for convenience of description, M is even number, and N is natural number), as shown in Figure 3
In the grid of upper left corner the first row first row, the first nesa coating 44 is R11, the first electrically conducting transparent in second grid of the first row
Film 44 is R12, the resistance of the i-th row j row is R successivelyij, need to meet:
Ri1＞ Rij＞ Ri(j+1)＞ RiN(1≤i≤M, 1 ＜ j ＜ N-1) (1)
R1j＞ Rij＞ R(i+1)j＞ R(M/2)j(1 ＜ i ＜ M/2-1,1≤j≤N) (2)
RMj＞ R(i+1)j＞ Rij＞ R(M/2)j(M/2 ＜ i ＜ M-1,1≤j≤N) (3)
Rij=R(M+1-i)j(1≤i≤M) (4)
In sum, the present invention uses multiple exit 5, it is to avoid between lighting unit 4, spacing is excessive, according to voltage
Deficiency, furthermore achieved that the uniformly light-emitting of whole OLED illumination panel.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (10)
1. an OLED illumination panel, it is characterised in that include that substrate (1), the upper surface of substrate (1) are closely fitted with cushion
(2), the upper surface of cushion (2) is provided with metal grill auxiliary electrode (3), is positioned at described metal grill auxiliary electrode (3)
Each mesh is equipped with lighting unit (4).Wherein lighting unit (4) includes metallic bone electrode (41), the first insulating barrier
(42), contact hole (43), the first nesa coating (44), the second insulating barrier (45), the second nesa coating (46), organic layer
And metallic cathode (48) (47).First nesa coating (44) changes its resistance value of adjustable by length, and its resistance value is along electricity
The low direction of pressure drop is gradually reduced, and compensates lighting unit (4) voltage drop change on diverse location.
A kind of OLED illumination panel the most according to claim 1, it is characterised in that: lighting unit (4) metallic bone electrode
(41) it is connected with metal grill auxiliary electrode (3), and the upper surface of metallic bone electrode (41) is closely fitted with the first insulating barrier
(42), the first insulating barrier (42) is provided with contact hole (43), and contact hole (43) is positioned at the top of metallic bone electrode (41), the
The upper surface of one insulating barrier (42) is closely fitted with the first nesa coating (44) and the second nesa coating (46), and first is transparent
One end of conducting film (44) is connected with the second nesa coating (46), and the other end of the first nesa coating (44) passes contact hole
(43) being connected with metallic bone electrode (41), the upper surface of the first nesa coating (44) is provided with the second insulating barrier (45), and second
The upper surface of nesa coating (46) is closely fitted with organic layer (47), and it is cloudy that the upper surface of organic layer (47) is closely fitted with metal
Pole (48).
3. according to a kind of OLED illumination panel described in claim 1 and 2, it is characterised in that: described lighting unit (4) and gold
Belonging to grid auxiliary electrode (3) electrical connection, substrate (1) is provided with exit (5), and exit (5) is electric with metal grill auxiliary respectively
Pole (3) and lighting unit (4) electrical connection.The quantity of exit (5) is one, exit (5) include anode exit (51) and
Cathode end (52), and anode exit (51) and cathode end (52) be individually fixed in the two of substrate (1) same sidewall
Hold, and cathode end (52) electrically connects with metallic cathode (48), anode exit (51) and metal grill auxiliary electrode (3) electricity
Connect.
4. according to a kind of OLED illumination panel described in claim 1 and 2, it is characterised in that: the quantity of described exit (5)
Be two, and two exits (5) be separately positioned on the two side of substrate (1), exit (5) include anode exit (51) and
Cathode end (52), and anode exit (51) and cathode end (52) be individually fixed in the two of substrate (1) same sidewall
Hold, and cathode end (52) electrically connects with metallic cathode (48), anode exit (51) and metal grill auxiliary electrode (3) electricity
Connect.
5. according to a kind of OLED illumination panel described in Claims 1-4 any one, it is characterised in that: described metal grill
Auxiliary electrode (3) is to be made up of at least one of which in monolayer Al, Cu, Mo, Ti, Ag, Au, Ta, Cr or aluminium alloy.
A kind of OLED illumination panel the most according to claim 2, it is characterised in that: described first nesa coating (44) is
One in the metal-oxide made with sputtering method, or the CNT of solution methods making, PEDOT and Ag nano wire.
A kind of OLED illumination panel structure the most according to claim 2, it is characterised in that: described first insulating barrier (42) and
Described second insulating barrier (45) is made by photoresist or polyimides.
8. according to a kind of OLED illumination panel structure described in claim 2 to 4 any one, it is characterised in that: described metal
Negative electrode (48) uses at least one in Al, Cu, Mg, Ag or Au to make.
9. the manufacture method of an OLED illumination panel, it is characterised in that concretely comprise the following steps:
The first step, makes SiO on substrate (1)2Cushion (2)；
Second step, at described SiO2Cushion (2) upper deposition metallic bone electrode (41) and metal grill auxiliary electrode (3)；
3rd step, depositing first insulator layer (42) also etches contact hole (43)；
4th step, deposits the first nesa coating (44) and the second nesa coating (46), and graphical first nesa coating
(44) the compensation resistance of different resistance values between lighting unit (4) is formed；
5th step, deposits the second insulating barrier (45)；
6th step, depositing organic (47)；
7th step, deposition metallic cathode (48).
The manufacture method of OLED illumination panel the most according to claim 9, it is characterised in that
In the first step, substrate (1) is specially glass, PEN, PET, PI or metal forming,
In second step, metallic bone electrode (41) be specially single layer metal firms, or by monolayer Al, Cu, Mo, Ti, Ag, Au, Ta,
The plural layers of any two-layer composition described above in Cr or aluminium alloy,
In 3rd step, the first insulating barrier (42) is specially SiO2、Si3N4、Al2O3、Y2O3Or the insulation that polyimides (PI) is made
Film,
In 5th, the second insulating barrier (45) dielectric film that specially photoresist or polyimides (PI) are made,
In 7th step, metallic cathode (48) is specially monolayer Al, Cu, Mg/Ag, Au thin film.
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