CN102931213A - Top-light-emission full-color organic light emitting diode (OLED) display - Google Patents
Top-light-emission full-color organic light emitting diode (OLED) display Download PDFInfo
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Abstract
The invention relates to a top-light-emitting full-color organic light emitting diode (OLED) display, which comprises a filter substrate, a color conversion film layer, an OLED light emitting device and a driving unit. The display is characterized in that the color conversion layer is a green color conversion film layer and covers light transmittance electrode layers of the OLED light emitting device corresponding to the green filter film layer; and under the condition of power-on, the luminescence spectrum of electroluminescence generated by the OLED light emitting device in a power-on state comprises a blue-color light emitting component of which the CIE color coordinate Y value is less than 0.55 and a red color light emitting component of which the CIE color coordinate X value is more than 0.64. The conventional manufacturing method and the conventional manufacturing process for the full-color OLED display having various color conversion modes are developed and created and a novel technology for manufacturing the top-light-emission full-color OLED display is creatively provided; and the top-light-emission full-color OLED display manufactured by the technology has the advantages of high fineness, high yield and the like and is favorable for improving the total manufacturing cost performance of the display.
Description
Technical field
The present invention relates to a kind of full-color organic electroluminescent (OLED) display that adopts color cycling to make, specifically the luminous full color OLED display in a kind of top belongs to display manufacturing technology field.
Background technology
In the prior art, the full color OLED active display has three kinds of different production methods usually: the first is by OLED luminescent devices different on the picture element matrix is directly applied electric field, thereby obtains independently luminous " the red green blue tricolor illumination mode " of RGB; The second is that the OLED that utilizes the filter coating cutting background White OLED luminescent device of different color to produce is luminous, thereby obtains red-green-blue luminous " white light adds the filter mode "; The third is to absorb effective OLED earth complex luminescent component in background ultraviolet, blueness, the light blue or White OLED luminescent device by color transformed rete, wherein high-octane blue-light-emitting transforms into low-energy green glow or ruddiness, thereby obtains luminous " color change manner " of redgreenblue.
Compare with front two kinds of full color OLED display manufacturings mode, color change manner is easy to realize the large scale of display, high-precision refinement and rate of good quality rate when manufacturing display, and is easy to improve the ratio of performance to price of display manufacturing.The process structure of shown in Figure 1 is a kind of traditional color change manner full color OLED display, it mainly comprises filter sheet base plate, color transformed rete and OLED luminescent device, filter sheet base plate wherein is comprised of transparency carrier 1, black matrix" grid rete 3, blue color filter rete 2, green color filter rete 4 and Red lightscreening plate rete 5, blue color filter rete 2, green color filter rete 4 and Red lightscreening plate rete 5 cover on the transparency carrier 1, and black matrix" grid rete 3 is arranged between the filter rete of these three kinds of colors; Described color transformed rete comprises green tint conversion rete 6 and red color conversion rete 12, and green tint conversion rete 6 covers on the green color filter rete 4, and red color conversion rete 12 covers on the Red lightscreening plate rete 5; Described OLED luminescent device is comprised of euphotic electrode layer 8, the combination 9 of organic luminescence function film layer and reflection electrode layer 10; the above-mentioned color transformed rete of euphotic electrode layer 8 vicinities; between euphotic electrode layer 8 and color transformed rete planarization rete 7 and protective layer are set, the combination 9 of organic luminescence function film layer and reflection electrode layer 10 are successively set on the another side of euphotic electrode layer 8.
It should be explained that, in the color change manner full color OLED display, used color transformed material is actually a kind of embedded photoluminescent material.Generally speaking, adopt in the full color OLED display device structure of above-mentioned traditional color change manner manufacturing, the color transformed rete that adopts has the function that the high-energy blue light is converted into low-yield green or emitting red light that produces in the background OLED luminescent device, and color conversion layer normally is made of pigment (comprise dyestuff, pigment and by certain approach aforementioned phosphors the is distributed to the photoetching resin) material that independent one or more have a fluorescent characteristic.Traditional color transformed substrate normally adopts photoetching or printing type to make and forms, because the variable thickness of the color transformed rete of different materials causes, it is easy like this because the jump between the color transformed rete causes whole color conversion layer surface smoothness poor, in order to compensate this jump, also need to make one deck planarization rete in color conversion layer.
In order to eliminate aqueous vapor remaining in color conversion layer or the filter membranous layer OLED luminescent device is produced harmful effect simultaneously; reduce because the generation of the dark space (Dark area) that this impact produces; usually also need to make layer protective layer on the planarization rete, this protective layer plays and stops that aqueous vapor enters the effect of OLED luminescent device.
Traditional employing color change manner is made in the full color OLED display processes; color conversion layer manufacture craft relative complex; not only need to make black matrix" grid rete, redgreenblue filter membranous layer and at least two kinds of color transformed retes; also need to make the planarization rete; the multiple rete such as protective layer relates to the complicated procedures of forming such as photoetching etching.In addition, traditional color transformed material exists the fast light life-span short, no matter the shortcomings, particularly red color conversion material such as color conversion efficient is low are that processing technology or performance (the light quantum conversion efficiency of color transformed material, light resistance and thermal endurance etc.) all do not have large breakthrough.These factors have restricted the combination property that color change manner full color OLED display comprises color stability and useful life, have restricted the Industrialization of color change manner full color OLED display.In addition, in the color change manner full color OLED display device structure, the luminous of Blue OLED device is basic, provide the basis of green and red pixel light, but current Blue OLED material is also very immature, the navy blue luminescent material with commercial application potentiality only limits to fluorescent material, no matter be life-span or efficient simultaneously, the developing water of blue light material on average lags behind green and emitting red light greatly, and therefore, there is greatly difficulty in the industrialization of traditional color change manner full color OLED display.In addition, structure and technique for traditional color change manner full color OLED display, except above technological difficulties, as mentioned above, the exploitation of red color coversion material still exists color conversion efficient and low shortcoming of fast light life-span, when being applied to the full color OLED active display, by direct color conversion, can't guarantee the superperformance of emitting red light pixel, this also is to cause this technology can not obtain the major reason of large-scale application.
The technical bottleneck that meets with in order to overcome present color cycling and Materials, the not high problem of red color conversion material efficiency particularly, the emerging product of Japan's bright dipping company has adopted a kind of OLED luminescent device that comprises blue and green dual color light emitting, it is by increasing the photonic absorption amount of red color conversion material, to obtaining the high-performance of red trichromatism pixel, and reach the high performance of display screen integral body.
In addition, Korea S Samsung makes the OLED luminescent device of color change manner full color OLED display becomes the luminescent device that contains dark blue and pure red two kinds of colors, luminous (blue and red) of two kinds of color components directly is provided by the OLED luminescent device, color transformed material between transparency carrier and the OLED luminescent device is reduced to the green of simple a kind of composition, absorb the blue-light-emitting component of background OLED luminescent device by the green tint coversion material, and convert thereof into and be the green light photoluminescence, then obtain red-green-blue by the redgreenblue filter membranous layer luminous.Compare with the manufacture method of traditional color change manner full color OLED display, a middle of the road has been walked in the invention of Samsung.Yet and traditional color change manner full color OLED display device structure have same difficulties be, blue light OLED material, no matter be appoint in efficient or life-span right pure in larger technical bottleneck, so, produce blue pixel by single Blue OLED luminescent material luminous, and the way that has blue-light-emitting to give out light by green conversion material production green pixel, will cause the blue pixel of OLED display and efficient and the life-span of green pixel the low problem of performance all to occur.Therefore, in this case, the invention of Samsung just lacks realistic meaning, and the performance that can imagine two kinds of primary colours that adopt the full color OLED display that this kind technology makes all can relative deficiency, affects the overall performance of display.
Recently, along with the development in smart mobile phone market, for small-medium size OLED display screen higher ratio of performance to price requirement has been proposed, require display screen to have above 300ppi on the one hand, even higher fineness, then require on the other hand to show to have lower price.
Tradition is made the true color technology of small-medium size OLED display screen and is used the luminous red green blue tricolor evaporation coating technique in top more, this technology is subject to the restriction of metal evaporation cover precision, the display making full accuracy of making only is the level about 200ppi, on the other hand because need accurately contraposition of three primary colors in the device, so the yields of display manufacturing is not high, usually can only realize the yields about 60%, these OLED display industry present situations have all limited the particularly application aspect the smart mobile phone application market of marketing of OLED full color display.
Summary of the invention
The present invention is on the basis of the various technical barriers that traditional various making full color OLED display technology schemes of fully having analyzed and researched face, the manufacture method of past various color change manner full color OLED display and technique are developed and innovates, creationaryly provide a kind of new top luminous full color OLED display fabrication techniques, adopt the luminous full color OLED display in top of this fabrication techniques to have the advantages such as high-fineness, rate of good quality rate, be conducive to improve display and always make cost performance.
According to technical scheme provided by the invention: push up luminous full color OLED display, comprise filter sheet base plate, color transformed rete, OLED luminescent device and be used for the luminous driver element of driving OLED luminescent device; Described filter sheet base plate comprises transparency carrier, blue color filter rete, black matrix" grid rete, green color filter rete and Red lightscreening plate rete, blue color filter rete, green color filter rete and Red lightscreening plate rete cover on the transparency carrier, and black matrix" grid rete is arranged between the filter rete of these three kinds of colors; Described OLED luminescent device comprises euphotic electrode layer, the combination of organic luminescence function film layer and reflection electrode layer, the color transformed rete that euphotic electrode layer is contiguous above-mentioned, the combination of organic luminescence function film layer and reflection electrode layer are successively set on the another side of euphotic electrode layer; It is characterized in that: described color transformed rete is green tint conversion rete, and it covers on the euphotic electrode layer corresponding to the OLED luminescent device of green color filter rete; Comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation CIE chromaticity coordinates Y value less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
Among the present invention, as preferably, described green tint conversion rete covers on the euphotic electrode layer corresponding to the OLED luminescent device of green color filter rete and Red lightscreening plate rete, and corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of green color filter rete be separated from each other corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of Red lightscreening plate rete.
Among the present invention, as preferably, described green tint conversion rete covers on the euphotic electrode layer corresponding to the OLED luminescent device of green color filter rete and Red lightscreening plate rete, and corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of green color filter rete be connected as a single entity corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of Red lightscreening plate rete.
Among the present invention, the making of described green tint conversion rete is core content, and green tint conversion rete has three kinds of structures: (1) green tint conversion rete only covers on the euphotic electrode layer corresponding to the OLED luminescent device of green color filter rete.(2) green tint conversion rete covers on the euphotic electrode layer corresponding to green color filter rete and Red lightscreening plate rete OLED luminescent device simultaneously, (3) green tint conversion rete covers on the euphotic electrode layer corresponding to green color filter rete and Red lightscreening plate rete OLED luminescent device simultaneously, and corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of green color filter rete be connected as a single entity corresponding to the green tint conversion rete on the euphotic electrode layer of the OLED luminescent device of Red lightscreening plate rete, namely corresponding to the OLED luminescent device of green color filter rete and corresponding to also being provided with green tint conversion rete on the locus between the OLED luminescent device of Red lightscreening plate rete.The green tint conversion rete of above-mentioned three kinds of structures is preferably finished by one technological process preparation.
Among the present invention, as preferably, comprise in the electroluminescent luminescent spectrum of described OLED luminescent device at least two kinds of CIE chromaticity coordinates Y values less than 0.25 navy blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
Among the present invention, comprise in the electroluminescent luminescent spectrum of described OLED luminescent device at least a CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, at least a CIE chromaticity coordinates Y greater than 0.25 and less than 0.55 light blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
Among the present invention, as preferably, the electroluminescent luminescent spectrum of described OLED luminescent device comprise CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, CIE chromaticity coordinates Y value greater than 0.25 and less than 0.55 light blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
Among the present invention, as preferably, the electroluminescent luminescent spectrum of described OLED luminescent device comprise CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, CIE chromaticity coordinates Y value greater than 0.25 and less than 0.55 light blue earth complex luminescent component, CIE chromaticity coordinates X value greater than the first emitting red light component of 0.64, CIE chromaticity coordinates X value greater than the second emitting red light component of 0.64.
Among the present invention, the material of described green tint conversion rete comprises the fluorchrome material, and the fluorchrome material in the described green tint conversion rete is selected from one or more the mixture in the organic fluorescent material with following formula, and described general formula is:
R1 in the general formula 1, R2 represent with the aromatic functional group on C-C key or the C-N Lian Jie Yu perylene group;
R1 in the general formula 2, R2, R3, R4 represent to be connected in aromatic functional group on the anthryl group with C-C key or C-N;
R1 in the general formula 3, R2, R3, R4 represent to be connected in aromatic functional group on the core group with C-C key or C-N.
In the present invention; color transformed material can directly be covered on the euphotic electrode layer of OLED luminescent device of institute's fixation element; also can be optionally before making color transformed material; the prior insulating film material layer of making one deck high grade of transparency between the euphotic electrode layer of OLED luminescent device and green tint conversion rete; this insulating film material layer can play the effect to the protection of OLED luminescent device on the one hand; spectral shape and the light that can also adjust the OLED luminescent device take out efficient, so that the electroluminescence of OLED device effectively enters filter rete and color transformed rete.The thickness scope of this thin film dielectric material layer is preferably below 1 micron between being 1nm to 5 micron.Can bring into play the thin-film material of this effect can enumerate: (1) metal oxide, for example SiO
X, AlO
X, TiO
X, TaO, ZnO
XDeng; (2) metal nitride, for example SiN
XDeng; (3) metal oxynitride compound, for example SiN
XO
YDeng; (4) fluoride materials, such as LiF, MgF2 etc.; (5) organic/inorganic multilayer film mixed structure.With regard to the processing technology of thin-film material layer, usually can enumerate vacuum evaporation, sputter, the methods such as CVD film forming.
OLED luminescent device and color transformed rete are not encroached on by water oxygen in order to adequately protect; can be as required; on aforementioned OLED luminescent device and color transformed rete, optionally make layer protective layer; the material of protective layer can be enumerated nitride material and oxide material; with regard to the processing technology of protective layer; usually can enumerate vacuum evaporation, sputter, the methods such as CVD film forming.
Can effectively enter filter sheet base plate in order to ensure the luminous of OLED luminescent device, optionally between color transformed rete and filter sheet base plate, inject packing material as required, this packing material need have good light transmittance, enters into the filter rete with luminous this packing material that can penetrate of guaranteeing the OLED luminescent device.
Be applied to filter rete of the present invention requirement and possess certain surface smoothness, in order to reach this requirement, the present invention covers one deck planarization rete at described filter rete.Further, also can cover the protective layer that one deck is used for exclusion of water oxygen on the described planarization rete, enter the OLED luminescent device to prevent the Trace Water Vapor in the filter rete, cause the deteriorated of device.Among the present invention, but described blue color filter rete, black matrix" grid rete, green color filter rete, Red lightscreening plate rete, green tint conversion rete, planarization rete and the photoetching of protective layer choice for use, printing, vacuum evaporation, laser turn penetrate, the existing technical approach such as sputter processes.
Among the present invention, described OLED luminescent device can have single device architecture and two kinds of versions of laminated construction, no matter is single device architecture or laminated construction, is described below respectively for different luminescent device structures:
Among the present invention, the OLED luminescent device that consists of the luminous full color OLED display in top comprises the first electrode, at least one combination of organic luminescence function film layer and second electrode, described at least one organic luminescence function film layer combination is arranged between the first electrode and the second electrode, described the first electrode and the second electrode can be reflection electrode layer or euphotic electrode layer, comprise at least a luminescent layer in the described organic luminescence function film layer combination.
Among the present invention, described OLED luminescent device can have single device architecture and two kinds of versions of laminated construction, is described below respectively:
The first structure of OLED luminescent device: described OLED luminescent device is single device architecture, for single device OLED luminescent device, it includes an organic luminescence function film layer combination, the different layers structural form that the electrode of this list device OLED luminescent device and the combination of organic luminescence function film layer can be listed below:
(1) the first electrode/luminescent layer/the second electrode;
(2) the first electrodes/hole injection layer/luminescent layer/the second electrode;
(3) the first electrodes/luminescent layer/electron injecting layer/the second electrode;
(4) the first electrodes/hole injection layer/luminescent layer/electron injecting layer/the second electrode;
(5) the first electrodes/hole injection layer/hole transmission layer/luminescent layer/electron injecting layer/the second electrode;
(6) the first electrodes/hole injection layer/hole transmission layer/luminescent layer/electron transfer layer/electron injecting layer/the second electrode;
The luminescent layer of described variant color is that the object luminescent material mixing and doping by corresponding color forms in material of main part, described object luminescent material is simple fluorescent material, phosphor material or is formed by different fluorescent materials and phosphor material matched combined, can obtain so high efficiency OLED luminescent device with multiple earth complex luminescent component.
For the OLED luminescent device of multiple earth complex luminescent component color structure, in order effectively to regulate the combination of carrier electric charge in luminescent layer, the doping content of the thickness of each luminescent layer of above-mentioned OLED luminescent device and object luminescent material can be regulated arbitrarily as required, or as required the different color luminescent layer is replaced stack combinations, can also between the adjacency luminescent layer, insert the electric charge of non-doping and energy barrier layer etc.
For single device OLED luminescent device, luminescent layer in its organic luminescence function film layer combination can send blue-light-emitting and emitting red light simultaneously, described luminescent layer can be the individual layer luminescent layer, it also can be the sandwich construction that mutually is superimposed by the different color luminescent layer, the different color luminescent layer produces different color light, mixes to consist of the multicomponent electroluminescence; The structure of described luminescent layer can list following multiple structure:
(1) can send simultaneously the individual layer luminescent layer of blue-light-emitting and emitting red light;
(2) blue light-emitting layer/red light emitting layer.
In addition, the present invention also can select to allow luminescent layer can send simultaneously the first blue-light-emitting, the second blue-light-emitting and emitting red light by adjusting the structural form of luminescent layer, and this moment, the structure of luminescent layer can list following multiple structure:
(1) can send simultaneously the individual layer luminescent layer of the first blue-light-emitting, the second blue-light-emitting and emitting red light;
(2) first blue and red light emitting layer/second blue light-emitting layers;
(3) first blue and the second blue light-emitting layer/red light emitting layers;
(4) the first blue light-emitting layers/red light emitting layer/the second blue light-emitting layer;
(5) red light emitting layer/first blue light-emitting layer/second blue light-emitting layer;
Blue emitting material and the blue emitting material in the second blue light-emitting layer in described the first blue light-emitting layer can be same a kind of blue emitting materials, and having precedence over is same CIE chromaticity coordinates Y value less than 0.25 navy blue luminescent material.When blue emitting material is two kinds when dissimilar, preferably, wherein a kind of is CIE chromaticity coordinates Y value less than 0.25 navy blue luminescent material, and another is the CIE chromaticity coordinates greater than 0.25 less than 0.55 light blue luminescent material.
In addition, the present invention also can be by adjusting the structural form of luminescent layer, selection allows luminescent layer can send simultaneously more kinds of blue-light-emittings and more kinds of emitting red lights, this moment, the structure of luminescent layer can be according to the above-mentioned structural principle with two kinds and three kinds luminous luminescent layers, do rational extension in conjunction with routine techniques and change, just do not enumerating one by one herein.
Among the present invention, the luminescent layer of above-mentioned various different colors is that the object luminescent material mixing and doping by corresponding color forms in material of main part, described object luminescent material is simple fluorescent material, phosphor material or is formed by different fluorescent materials and phosphor material matched combined, can obtain so high efficiency OLED luminescent device with multiple earth complex luminescent component.
In addition, for the OLED luminescent device with multicolour earth complex luminescent component, in order effectively to regulate the combination of carrier electric charge in luminescent layer, the doping content of the thickness of each luminescent layer of OLED luminescent device and object luminescent material can be regulated arbitrarily as required, or as required the different color luminescent layer is replaced stack combinations, can also between the adjacency luminescent layer, insert the electric charge of non-doping and energy barrier layer etc.
The second structure of OLED luminescent device: described OLED luminescent device is the laminated construction that includes plural organic luminescence function film layer combination, for lamination OLED luminescent device, there is the combination of many group organic luminescence function film layer between its first electrode and the second electrode, isolates by charge generating layer (also being called charge separating) between the adjacent organic luminescence function film layer combination.Lamination OLED luminescent device is compared with single device OLED luminescent device, under electric field action under the same current density driving, double number of photons can be discharged, thereby higher internal quantum can be produced, can be referring to Chinese patent CN1447629 about the detailed structure of lamination OLED luminescent device.
Among the present invention, the structure of concrete applicable lamination OLED luminescent device is listed below:
(1) first electrode/the first organic luminescence function film layer combination/charge generating layer/the second organic luminescence function film layer combination the/the second electrode;
(2) first electrodes/the first organic luminescence function film layer combination the/the first charge generating layer/the second organic luminescence function film layer combination the/the second charge generating layer/the 3rd organic luminescence function film layer combination the/the second electrode;
(3) first electrodes/the first organic luminescence function film layer combination the/the first charge generating layer/the second luminescent device organic luminescence function film layer combination the/the second charge generating layer/... N organic luminescence function film layer combination the/the second electrode;
Comprise blue-light-emitting component and emitting red light component in order to make in the electroluminescent luminescent spectrum of lamination OLED luminescent device, the object luminescent material of different color can be dispersed in the different organic luminescence function film layer combinations, finally make the OLED luminescent device that can meet the demands.
Among the present invention, the structure of the lamination OLED luminescent device that can meet the demands can have following several structure:
One, described OLED luminescent device comprises the combination of two organic luminescence function film layer, comprises blue-light-emitting component and emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, being constructed as follows of the type OLED luminescent device:
The first electrode/blue organic luminescence function film layer combination/charge generating layer/red organic luminescence function film layer combination the/the second electrode.
Two, described OLED luminescent device comprises two organic luminescence function film layer combinations, comprise the first blue-light-emitting component, the second blue-light-emitting component and emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, the type OLED luminescent device can list following multiple structure:
Blue and the red organic luminescence function film layer combination of the blue organic luminescence function film layer of (1) first electrode/first combination/charge generating layer/second the/the second electrode;
(2) first electrodes/first blueness and the second blue-light-emitting organic functions rete combination/charge generating layer/emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
Three, described OLED luminescent device comprises two organic luminescence function film layer combinations, comprise blue-light-emitting component and the first emitting red light component and the second emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, the type OLED luminescent device can list following multiple structure:
(1) first electrode/blueness and the first emitting red light organic functions rete combination/charge generating layer/the second emitting red light organic functions rete combination the/the second electrode;
(2) the first electrodes/blue-light-emitting organic functions rete combination/charge generating layer/first redness and the second emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
Four, described OLED luminescent device comprises two organic luminescence function film layer combinations, comprise the first blue-light-emitting component, the second blue-light-emitting component, the first emitting red light component and the second emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, this OLED luminescent device can list following multiple structure:
(1) first electrode/first is blue and the first red organic luminescence function film layer combination/charge generating layer/second is blue and second red organic luminescence function film layer combination the/the second electrode;
(2) first electrodes/first is blue and the second blue-light-emitting organic functions rete combination/charge generating layer/first is red and the second emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
The structure of four kinds of lamination OLED luminescent devices described above all is only to have two organic luminescence function film layer combinations, when the OLED luminescent device comprises at least three organic luminescence function film layer combinations, the kind of the different color earth complex luminescent component in the electroluminescent luminescent spectrum of described OLED luminescent device should be more than or equal to the number of organic luminescence function film layer combination, and should comprise at least a color earth complex luminescent component in each organic luminescence function film layer combination, all organic luminescence function film layer are combined in any order stack between the first electrode of OLED luminescent device and the second electrode, isolate by charge generating layer between the adjacent organic luminescence function film layer combination.At this moment, the structure of OLED luminescent device can be done rational extension in conjunction with routine techniques and change according to the above-mentioned structural principle that only has two organic luminescence function film layer combinations, is not just enumerating one by one herein.
In the OLED luminescent device of the laminated construction of above-mentioned multiple structure, the material of described charge generating layer is selected from one or more the mixture in following structural 1 material, structural formula 2 materials, and described structural formula is:
In above-mentioned several lamination OLED luminescent devices, the combination of the organic luminescence function film layer of different color can select to be produced on front portion or the rear portion of charge generating layer as required.Preferably, the first blue organic luminescence function film layer combination is positioned at a side of charge generating layer, and the second blue and red organic luminescence function film layer combination is positioned at the opposite side of charge generating layer.
In above-mentioned several lamination OLED luminescent devices, should be provided with the insulating layer material material between the electrode of adjacent OLED luminescent device.
Among the present invention, having a kind of material in the object luminescent material in the described OLED luminescent device at least is the organic phosphorescent material that contains iridium, nail, platinum, rhenium and palladium metal.
Among the present invention, when comprising navy blue earth complex luminescent component and light blue earth complex luminescent component in the luminescent spectrum of OLED luminescent device, navy blue is luminous preferably to be produced by fluorescent material, and light blue luminous and emitting red light is preferably produced by phosphor material.And light blue phosphor material and red phosphorescence material preferably are doped among the same material of main part, and perhaps the stack of navy blue luminescent material and red illuminating material consists of the luminous combination of OLED.
Among the present invention, the driver element of described full color OLED display can adopt passive type to drive two kinds of (PM driving) and active drivings (AM driving), when adopting passive type to drive, the drive circuit of display comprises the IC control chip, the OLED luminescent device need to be kept apart mutually by dissimilar insulation insulated column, and formation can be luminous by the pixel that pulsed drive is independently controlled; When adopting active driving, the drive circuit of display comprises film crystal tube loop and IC control chip, the film crystal tube loop needs at least and is connected an electrode connection, and bury between OLED luminescent device and color transformed substrate lighting or extinguish with switch form control OLED luminescent device.
The three primary colors principle of luminosity of full color OLED display of the present invention is as follows:
The blue-light-emitting that consists of the full color OLED display is directly to be obtained by the blue-light-emitting component in the OLED luminescent device, obtained by the blue color filter rete by the electroluminescence of Blue OLED luminescent device, the electroluminescence of OLED luminescent device is when passing through the blue color filter rete, green in its spectrum and emitting red light component will be stopped by blue filter membranous layer, can not by blue filter membranous layer direct projection in air, therefore only can observe pure blue-light-emitting from the blue pixel area on transparency carrier surface.
The part of the green emitting of full color OLED display is by the blue-light-emitting component in the green tint conversion rete absorption OLED luminescent device, and convert thereof into as the green light photoluminescence, another part of green emitting then is directly to be obtained by the green color component in the electroluminescence of OLED luminescent device, blue-light-emitting in the OLED luminescent device and emitting red light are when passing through the green color filter rete, blue-light-emitting and emitting red light are effectively filtered, only remain green emitting and see through transparency carrier, therefore only can observe pure green emitting from the green pixel zone on transparency carrier surface, this green emitting is the electroluminescence of OLED device and the mixed light of color conversion material luminescence generated by light.
What here need to further specify is that the half-wave of the luminescent spectrum of green tint conversion film material is wide often comparatively wide in range, often not only includes green luminescent component, also can include the emitting red light component that a small amount of wavelength surpasses 600nm simultaneously.Therefore, if green tint conversion rete is covered on the Red lightscreening plate rete simultaneously, consist of the emitting red light component of full color OLED display, both comprised by the red electroluminescence in the OLED luminescent device, comprise again a small amount of red light photoluminescence that green tint conversion rete produces, the Main Function of Red lightscreening plate rete is that red light photoluminescence and the luminous middle red electroluminescence component of OLED luminescent device part in addition that green tint conversion rete produces are filtered out, and therefore only can observe pure emitting red light from the red pixel area on transparency carrier surface.
Need to prove, the standby design feature of full color OLED displaying appliance of the present invention does not affect its collocation or makes up known display fabrication process technology, for example, and in order to improve the contrast of display, at the further applying polaroid material in the surface of display; In order to improve display brightness, in display surface applying brightness enhancement film etc.; In addition, can also become the Pentile compound mode to the Pixel Design that consists of the OLED display, perhaps as required, the size of adjusting the pixel of different color is non-equal equidimension, perhaps Pixel Design is become " product " font or other structural forms; In addition, if the OLED display that AM drives, its type of drive can be LTPS-TFT, α-TFT, O-TFT or metal oxide TFT etc.In a word, technology disclosed in this invention can be compatible and utilizes the known display technology to make high performance OLED to show product.Recently, a kind of compacter top luminous full color OLED design of LED scheme is, with touch-screen and the integrated making of filter rete, so that the filter rete possesses the function of touch-control simultaneously, thereby can simplify the structure of display, so that the display time is thinner.For the person of ordinary skill of the art, the present invention can be fit to adopt this technology equally.
In the described OLED luminescent device, reflection electrode layer has good conductivity, flatness except requiring, also require to have good light reflecting effect, in order to realize these requirements, usually reflection electrode layer is made and become combination electrode, namely cover the layer of transparent conductive layer in the material top with highly reflective, to improve its surperficial evenness.Described euphotic electrode layer has good conductivity except requiring, and also will possess certain transmitance, usually can use the supporting of translucent metal material or mixed-metal materials, or directly use traditional burning material to make.At least comprise a luminescent layer in the described organic luminescence function film layer combination.
The present invention compared with prior art, advantage is: the OLED luminescent device of the luminous full color OLED display in top of the present invention has comprised multiple blue coloured electroluminous and red electroluminescent multicomponent electroluminescence composition, color transformed rete only is a kind of colour component, and directly be covered on the OLED luminescent device, further realize the red green blue tricolor luminescence display by the filter rete, the full color OLED display performance advantage of device architecture of the present invention may be embodied in following several aspect: (1), because consist of the OLED luminescent device of OLED active display and be the device of simple a kind of structure, therefore avoided precision metallic cover technique of counterpoint in the use OLED luminescent device from process structure, thereby the difficulty of the vacuum evaporation process when greatly reducing the making of OLED luminescent device, simultaneously because color transformed material is chosen as single a kind of material, simplify manufacture difficulty and the process number of color transformed substrate, be conducive to improve color change manner full color OLED display yields.(2), color transformed rete directly overlays on the euphotic electrode layer on OLED luminescent device top, improved color transformed rete to the absorption efficiency of oled light photoluminescence, and then improved the conversion efficiency of color transformed rete.(3), the green emitting in the OLED luminescent device and blue-light-emitting all come from blue coloured electroluminous earth complex luminescent component dissimilar in the OLED luminescent device, in order effectively to adjust the light intensity of OLED display different pixels, reach the portrait expression effect of high-quality, only need by regulating in the OLED luminescent device wherein the light intensity ratio of one group of blue light component and red component, can reach the purpose of regulating the different pixels luminous intensity, means are simple, easy operating.What (4), the optional majority restructuring of the blue light emitting in the OLED luminescent device divided is blue coloured electroluminous, increased the light quantity subnumber that consists of the blue-light-emitting of full-color display, thereby improved the efficient of blue-light-emitting pixel, be conducive to obtain high color purity, long-life blue-light-emitting, remedy with evaded current various color luminescent material in the relative performance inferior position that falls behind of blue light material, and then balance the important indicators such as the luminous efficiency of full-color display different pixels, colorimetric purity, life-span, the performance that improves whole full color OLED display is had positive effect.(5), changed the interior metal mask alignment process of luminescent device of the luminous full color OLED display in traditional top, because avoided use metal mask, fineness that can the Effective Raise display, yields, and then can improve the combination and integration of displays ratio of performance to price.
Description of drawings
Fig. 1 is the structural representation that traditional color change manner full color OLED display removes driver element.
Fig. 2 is the first structural representation that the present invention pushes up luminous full color OLED display.
Fig. 3 is the second structural representation that the present invention pushes up luminous full color OLED display.
Fig. 4 is the third structural representation that the present invention pushes up luminous full color OLED display.
Fig. 5 is that the employed OLED luminescent device of the full color OLED display spectrum of the embodiment of the invention 1 consists of schematic diagram.
Fig. 6 is the indigo plant in the full color OLED display of the embodiment of the invention 1, the transmitance schematic diagram of green, Red lightscreening plate rete.
Description of reference numerals: 1-transparency carrier, 2-blue color filter rete, 3-black matrix" grid rete, 4-green color filter rete, 5-Red lightscreening plate rete, 6-green tint conversion rete, 7-planarization rete, 8-euphotic electrode layer, the combination of 9-organic luminescence function film layer, 10-reflection electrode layer, 11-driver element, 12-red color conversion rete.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
Shown in Figure 2 is the first structure that the present invention pushes up luminous full color OLED display, and it is mainly by filter sheet base plate, color transformed rete, OLED luminescent device be used for the luminous driver element 11 of driving OLED luminescent device and form; Described filter sheet base plate mainly is comprised of transparency carrier 1, blue color filter rete 2, black matrix" grid rete 3, green color filter rete 4 and Red lightscreening plate rete 5, and blue color filter rete 2, green color filter rete 4 and Red lightscreening plate rete 5 cover on the transparency carrier 1; Described OLED luminescent device is produced on the driver element 11, the OLED luminescent device is comprised of euphotic electrode layer 8, the combination 9 of organic luminescence function film layer and reflection electrode layer 10, the above-mentioned color transformed rete of euphotic electrode layer 8 vicinities, the combination 9 of organic luminescence function film layer and reflection electrode layer 10 are successively set on the another side of euphotic electrode layer 8, and reflection electrode layer 10 directly is connected with driver element 11; Innovative point of the present invention is that described color transformed rete is green tint conversion rete 6, and it covers on the euphotic electrode layer 8 corresponding to the OLED luminescent device of green color filter rete 4; Comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation CIE chromaticity coordinates Y value less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component (shown in Figure 5).
In the present embodiment 1, the luminous full color OLED display in described top can adopt AM to drive or PM drives, and when display adopted AM to drive, the TFT control loop needed and be connected one group of electrode to connect, and controls the luminous of pixel by switch form; When display adopted PM to drive, the pixel of display is luminous then to be controlled by pulse.
In Fig. 5, blue-light-emitting component and emitting red light component are mixed stack, consist of one and comprise blueness and emitting red light component in interior two spectrum electroluminescence.Comparatively speaking, green luminescent component content in the OLED luminescent device electroluminescence component is less, intensity relatively a little less than, so the present invention adds a green tint conversion rete 6, green tint conversion rete 6 can absorb the blue-light-emitting component in the OLED luminescent device, and converts thereof into and be the green light photoluminescence.
In embodiment 1, the material of described transparency carrier 1 can adopt existing conventional material to form, such as glass or polymeric material, wherein polymeric material can be selected cellulose esters, polyamide, Merlon, polyester, polystyrene, polyolefin, polysulfones, polyether sulfone, polyether-ketone, Polyetherimide, polyoxyethylene, norbornene resin etc.When using polymeric material, transparency carrier 1 can be rigidity or flexibility.
Among the present invention, the visible light transmittance rate of described transparency carrier 1 is at least more than 80%, preferably is at least 86% above level.
Be covered in red, green, blue filter rete and the material of black matrix" grid rete 3 and material and the manufacture craft that manufacture craft can be consulted and used the filter rete on the conventional liquid crystal on the transparency carrier 1, this class material normally consists of deciding Pigments in photoresist, the material of different qualities filter membranous layer normally adopts conventional photolithographicallpatterned to be made, concrete core process comprise film, expose, the contents such as development, curing.Except photolithographicallpatterned, black matrix" grid rete 3 and rgb pixels filter rete can also use the techniques such as printing, letterpress, offset printing and nozzle (Nozzle) printing to make.In order to stop steam remaining in the filter rete to enter the OLED luminescent device device is shone into infringement, can be chosen in as required the protective layer that preparation one deck covers comprehensively on each colo(u)r filter rete.This protective layer can prevent effectively that block and moisture ooze out from filter film medium layer, affect the illumination effect of OLED luminescent device.Can adopt as the material that protective layer uses: (1) metal oxide, for example SiO
X, AlO
X, TiO
X, TaO, ZnO
XDeng; (2) metal nitride, for example SiN
XDeng; (3) metal oxynitride compound, for example SiN
XO
YDeng; (4) organic/inorganic multilayer film mixed structure.
Being covered in green tint conversion rete 6 on the OLED luminescent device apex electrode can be scattered in transparent material by fluorchrome and consist of, or directly consisted of by independent a kind of fluorchrome material, or the Subjective and Objective mixed form that is doped among the system body material by the green emitting material consists of, or directly mixed by several green emitting materials and to consist of.
Among the present invention, the material of described green tint conversion rete 6 is preferable over single fluorescent material directly formation or Subjective and Objective mixed form formation, the fluorchrome material is selected from one or more the mixture in the organic fluorescent material with following formula, and described general formula is:
R1 in the general formula 1, R2 represent with the aromatic functional group on C-C key or the C-N Lian Jie Yu perylene group;
R1 in the general formula 2, R2, R3, R4 represent with the aromatic functional group on C-C key or the C-N Lian Jie Yu perylene group;
R1 in the general formula 3, R2, R3, R4 represent with the aromatic functional group on C-C key or the C-N Lian Jie Yu perylene group.
The basic demand of the fluorchrome material in the described green tint conversion rete 6 is that the following blue light of 500nm is had strong absorption, simultaneously can send the green fluorescence of crest between 500nm to 550nm, can also require to possess stronger fluorescence quantum efficiency as the material that the green tint coversion material uses, materials also can list: (1) Coumarins dyestuff, specifically comprise 3-(2 '-benzothiazolyl)-7-diethyl amino coumarin (coumarin 6), 3-(2 '-benzimidazolyl)-7-diethyl amino coumarin (cumarin 7), 3-(2 '-N-tolimidazole base)-7-diethyl amino coumarin (cumarin 30) and 2,3,5,6-1H, 4H-tetrahydrochysene-8-trifluoromethyl quinoline promises (bending inolidine) (9,9a, 1-gh) cumarin (coumarin 1 53); (2) basic yellow 51, and it is the dyestuff in the coumarine dye family; (3) naphthalimide dyestuff, such as solvent yellow 11 and solvent yellow 116 etc.; In addition, materials also can adopt Japanese patent application P2005-34904; P2004-34964; Compound described in the flat 10-273972 patent etc.
Green tint conversion rete 6 can select the coating process different with red, green, blue filter rete from aforementioned black matrix" grid rete 3 to make, can be according to the printing of characteristics choice for use, letterpress, the vacuum evaporation of material, laser turns the thin film-forming method such as to be penetrated and makes.
Planarization rete 7 and the filler material of certain thickness can be set between OLED luminescent device of the present invention or color transformed rete and green glow membrane material as required.These materials are covered on each filter rete comprehensively, and fill up space between OLED luminescent device and the filter rete, be used for covering the defective on the above-mentioned various difference in functionality rete, stop and eliminate the short circuit of the OLED display that these defectives may cause.Rete can adopt the monolayer material structure, perhaps is made of with stepped construction multiple material.The material that is used to form planarization rete 7 and the filling bed of material comprises imide-modified organic siliconresin; Inorganic metal compound (TiO for example, Al
2O
3, SiO
2); The material of the dispersion that forms in acrylic resin, polyimide resin, the organic siliconresin etc.; Contain the acrylate monomer of active ethylene group/oligomer/polymer resin; The photoresist resin; Fluorine resin; Photo curable resin and/or thermosetting resin are such as epoxy resin, epoxide modified acrylic resin etc.The method of processing these materials formation planarization retes 7 is not particularly limited, and can pass through conventional method, carries out this operation such as dry method (such as sputter, vapour deposition, CVD etc.) and wet method (spin coating, roller coat, cast, photoetching etc.).
In the luminous full color OLED display in top shown in Figure 2, described OLED luminescent device is single device architecture, it comprises the first electrode, organic luminescence function film layer combination the 9 and second electrode, organic luminescence function film layer combination 9 is arranged between the first electrode and the second electrode, described the first electrode and the second electrode can be reflection electrode layer 10 or euphotic electrode layer 8, and described organic luminescence function film layer combination 9 comprises luminescent layer.
In the described OLED luminescent device, the luminescent layer of variant color is that the object luminescent material mixing and doping by corresponding color forms in material of main part, with regard to the object luminescent material, can list fluorescence class material and phosphor material two large classes.The contrast fluorescence luminescent material, phosphorescent light-emitting materials can utilize singlet and triplet excitons simultaneously in luminescence process, and internal quantum efficiency can reach 100% in theory, thereby can greatly improve the luminous efficiency of luminescent device.
In above-mentioned OLED luminescent device, the material of main part that consists of the luminescent layer of above-mentioned OLED luminescent device not only needs to possess ambipolar charge transmission, need simultaneously to possess appropriate energy rank, the excitation energy because of electronics and hole-recombination generation effectively can be delivered to the object luminescent material.Such material comprises diphenylethyllene arylene derivatives, stibene derivative, carbazole derivates, triarylamine derivatives, anthracene derivant, pyrene derivatives, triphenylene, bends derivative, two (2-methyl-8-quinoline) (p-phenylphenol) aluminium (BAlq) etc.
In above-mentioned OLED luminescent device, described object luminescent material can be simple fluorescent material, phosphor material or be formed by different fluorescent materials and phosphor material matched combined, having a kind of material in the object luminescent material at least is the organic phosphorescent material that contains iridium, nail, platinum, rhenium and palladium metal, preferably, the first blue-light-emitting is produced by fluorescent material, and the second blue-light-emitting and emitting red light are produced by phosphor material.
In above-mentioned OLED luminescent device, as the blue-fluorescence guest materials for generation of blue-light-emitting, not only need to possess high fluorescent quantum luminous efficiency, also need simultaneously to possess appropriate energy rank, luminous, the such material that can effectively absorb material of main part excitation energy is not particularly limited.For example, can list talan amine derivant, pyrene derivatives, derivative in the wrong, anthracene derivant, benzoxazole derivative, benzothiazole derivant, benzimidizole derivatives, derivative in the wrong, phenanthroline derivative, diphenylethyllene benzene derivative, tetraphenylbutadiene derivative etc.; Wherein can use 4,4 '-two (2-(9-ethyl carbazole-2-yl)-vinyl) biphenyl (BCzVBi), perylene etc.Also can list the quaterphenyl based compound, two phenyl based compounds, benzene imidazole compound benzoxazole based compound Ben Bing oxadiazole based compound, the styryl benzene compound, distyrene pyrazine based compound, the butadiene-based compound, the naphthalimide compound, the perillene based compound, the aldazine based compound, the cyclopentadiene based compound, pyrrolopyrrole formyl based compound, the styryl amine compound, coumarin series compounds, aromatic series dimethylbenzene theophylline based compound, be that material is as the metal complex of part with the 8-quinolinol, polyphenyl based compounds etc. are one or more combination separately; In these compound-materials, the implementation material that checking can list aromatic series dimethylbenzene theophylline based compound arranged, 4,4 '-two (2,2-two-1-butyl phenyl vinyl) two phenyl (are called for short: DTBPBBi), 4,4 '-two (2,2-diphenylacetylene) two phenyl (are called for short: DPVBi) etc. with their derivative.
Except fluorescent material, can also use phosphor material to be applied in the OLED luminescent device structure of the present invention, can possess as the material requirements that phosphorescent light body material uses higher triplet state energy rank, appropriate HOMO/LUMO energy rank and bipolar conductibility, materials can list carbazoles derivative, compound in triazine class etc.
As the blue phosphorescent guest materials, get final product so long as have the material of blue phosphorescent lighting function, be not particularly limited.Such as the metal complex that can select iridium, nail, platinum, rhenium, palladium etc., preferably, select that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton in the ligand of above-mentioned metal complex.More particularly, can select two (4,6-difluorophenyl pyridine-N, C2 ')-and picoline iridium, three (2-(2,4-difluorophenyl) pyridine-N, C2 ') iridium, two (2-(3, the 5-trifluoromethyl) pyridine-N, C2 ')-picoline iridium, two (4,6-difluorophenyl pyridine-N, C2 ') acetylacetone,2,4-pentanedione iridium etc.
In addition, the Subjective and Objective material that produces blue-light-emitting in the above-mentioned OLED of the can be used for luminescent device also can adopt disclosed compound in following patent or the patent application, and these patents or patent application comprise: United States Patent (USP) or patent application: US20080193797; US20080220285; US20090128009; US20090110957; US20100295444; US20110114889; US20110042655; US20110147716; US20110284799; US20120126180; US20120112169; US2012011216; US7846558; US8173275.Japan Patent or patent application: JPA2007223904; JPA2008214332; JPA2008291271; JPA2008545630; JPA2009010181; JPA2009505995; JPA200954474; JPA2009542735; JPA2010238880; JPA2010241687; JPA201002776; JPA2011216640; JPA2012080093.International monopoly or patent application: WOA12007032161; WOA12007032162.
In above-mentioned OLED luminescent device, as the material of main part for generation of emitting red light, not only need to possess ambipolar charge transmission, need simultaneously to possess appropriate energy rank, the excitation energy because of electronics and hole-recombination generation effectively can be delivered to the object luminescent material.Such material can list such as diphenylethyllene arylene derivatives, diphenylethyllene benzene derivative, talan amine derivative, hydroxyquinoline metal complex, triarylamine derivatives, oxadiazole derivative, oxygen oxadiazole derivative, two carbazole derivates, few thiophene derivant, 1-benzopyran derivatives, triazole derivative, benzoxazole derivative, benzothiazole derivant etc., can list three (oxine) aluminium (Alq), DPVBi etc. more specifically.
In above-mentioned OLED luminescent device, as the fluorescence guest materials for generation of emitting red light, not only need to possess high fluorescent quantum luminous efficiency, also need simultaneously to possess appropriate energy rank, material of main part excitation energy can effectively be absorbed luminous, such material can list europium complex, 1-benzopyran derivatives, Rhodamine Derivatives, the benzothioxanthene derivative, derivatives of porphyrin, oil red (oil red), 2-(1, the 1-dimethyl ethyl)-6-(2-(2,3,6,7-tetrahydrochysene-1,1,7,7-tetramethyl-1H, 5H-benzo (ij) quinoline-9-yl) vinyl)-4H-pyrans-4H-subunit) malononitrile (DCJTB), the 4-(dicyano methylene)-the p-dimethylamino styryl of 2-methyl-6-()-4H-pyrans (DCM) etc.
With respect to material of main part, the amount of fluorescence guest materials (incorporation) is preferably 0.01% ~ 20%(weight), more preferably be 0.1% ~ 10%(weight).When using the blue-fluorescence guest materials, with respect to material of main part, the amount of blue-fluorescence guest materials is preferably 0.1% ~ 20%(weight).Only in this scope, can make that to produce effective energy distribution between high-octane blue-light-emitting material and the low-energy emitting red light material gentle, can access the balance each other electroluminescence of intensity of the blue and emitting red light of possessing of expectation.
As the red phosphorescent guest materials, get final product so long as have the material of red phosphorescent lighting function, be not particularly limited.Such as the metal complex that can enumerate iridium, nail, platinum, rhenium, palladium etc., preferably, select that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton etc. in the ligand of above-mentioned metal complex.More particularly, can select two (2-(2 '-benzo (4,5-α) thienyl) pyridine-N, C3 ') acetylacetone,2,4-pentanedione iridium (btp2Ir (acac)), 2,3,7,8,12,13,17,18-octaethyl-12H, 23H-porphyrin-platinum (II), two (2-(2 '-benzo (4,5-α) thienyl) pyridine-N, C3 ') iridium, two (2-phenylpyridine) acetylacetone,2,4-pentanedione iridium.
In addition, the phosphorescence Subjective and Objective luminescent material in the above-mentioned OLED of the can be used for luminescent device also can adopt disclosed compound in following patent or the patent application, and these patents or patent application comprise: the U.S.: US20050227109; US20070048546; US20070104979; US20070104980; US20080203360; US20080297033; US20090108736; US20090140639; US20090030202; US20100133524; US20090104472; US20090309487; US20100141125; US20100102714; US20100148663; US20100163853; US20110108827; US20110057559; US20100044689; US20110278555; US20110108822; US20110284799; US2011227049; US20110108823; US20110057559; US20110266528; US8039127; US8071226.Japan: JPA2007254737; JPA2007284432; JPA2007314792; JPA2008160098; JPA2008160098; JPA2008270770; JPA2008542203; JPA2008179607; JPA2008147351; JPA2008147354; JPA2008147398; JPA2008147353; JPA2009526071; JPA2009187956; JPA2009099783; JPA2009016693; JPA2009534846; JPA2009267257; JPA2009544743; JPA2009539768; JPA2009088538; JPA2010161071; JPA2010161357; JPA2010520882; JPA2011098958; JPA2011121877; JPA2012512166; JPA2012046479; JPA2012046492.International: WOA12009008100; WOA12007111176; WOA12009102054; WOA12009008100; Germany: DE102009053836; Taiwan: TW201105637.
Principle according to optional also can arrange hole injection layer, hole transmission layer, electron transfer layer and/or electron injecting layer in this OLED luminescent device.
In this OLED luminescent device, the material of above-mentioned each layer can adopt the known spendable all material of making OLED luminescent device or the following material that is expected to develop.Can use any processing method such as vacuum evaporation known in the association area, the methods such as vapour deposition are made the OLED luminescent device.
In the above-mentioned OLED luminescent device, the material that is used for making euphotic electrode layer 8 comprises: ITO, aluminium oxide, indium oxide, IZO, zinc oxide, zinc-aluminum oxide, zinc-gallium oxide, or the transparent conductive metal oxide that has added the dopant of F or Sb and so in the above-mentioned oxide forms.Perhaps consisted of by independent one or several film metal materials mixing, for example (,) the AgMg alloy material, Ag thin-film material etc.Described euphotic electrode layer 8 can be made by vapour deposition, sputter, evaporation or chemical vapor deposition (CVD) mode, preferably makes by the sputter mode.
In the above-mentioned OLED luminescent device, the material that is used for making hole injection layer, hole transmission layer can be selected arbitrarily Available Material commonly known in the art.Specifically can list phthalocyanine derivates, triazole derivative, triarylmethane derivatives, triarylamine derivatives oxazole derivative oxadiazole derivative, hydazone derivative, stilbene derivatives, the pyridinoline derivative, the polysilane derivative, imdazole derivatives, phenylenediamine derivative, the amino Kui Er ketone derivatives that replaces, the styryl anthracene derivant, the distyryl compounds such as styryl amine derivative, the Cong derivative, the silazane derivative, the phenyl amines copolymer, porphyrin compound, carbazole derivates, the polyaryl alkane derivatives, polyphenylene ethylene and derivative thereof, polythiophene and derivative thereof, the poly-N-vinyl carbazole derivates, the electroconductive polymer oligomers such as thiophene oligomers, aromatic uncle amine compound, the styrylamine compound, three amines, tetraamine, diphenyl amine, the propine diamine derivative, the p-phenylene diamine derivative, the m-phenylene diamine (MPD) derivative, 1,1 '-two (4-ammonia diaryl base phenyl) cyclohexane, 4,4 '-two (diarylamines) biphenyl class, two (4-(ammonia diaryl base) phenyl) methane class, 4; 4 "-two (ammonia diaryl base) Terphenyls, 4; 4 " '-two (ammonia diaryl base) quaterphenyl class, 4,4 '-two (ammonia diaryl base) diphenylether, 4,4 '-two (ammonia diaryl base) diphenyl sulfane class, two (4-(ammonia diaryl base) phenyl) dimethyl methyl alkanes, two (4-(ammonia diaryl base) phenyl)-two (trifluoromethyl) methane class, 2,2-diphenylethylene compound etc.Described triarylamine derivatives, can list 2 times of bodies of triphenylamine, 3 times of bodies, 4 times of bodies and 5 times of bodies, 4,4 '-two (N-phenyl-N-(4 "-aminomethyl phenyl) amino) biphenyl; 4; 4 '-two (N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 4,4 '-two (N-phenyl-N-(3 "-methoxyphenyl) amino) biphenyl, N, N '-diphenyl-N; N '-two (1-naphthyl) (1; 1 '-biphenyl)-4,4 '-diamines (NPB), 4; 4 '-two (N-(4 '-(N "-(1-naphthyl)-N "-phenyl amino) xenyl)-the N-phenyl amino) biphenyl (NTPA); 3,3 '-dimethyl-4,4 '-two (N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 1,1-pair (4 '-(N, N-two (4 "-aminomethyl phenyl) amino) phenyl) cyclohexane, 9; 10-pair (N-(4 '-aminomethyl phenyl)-N-(4 "-n-butylphenyl) amino) phenanthrene, two (N, N-the diphenyl amino)-6-phenylphenanthridineands of 3,8-, 4-methyl-N, N-pair (4 ", 4 " '-two (N ', N "-two (4-aminomethyl phenyl) amino) biphenyl-4-yl) aniline; N; N '-two (4-(diphenyl amino) phenyl)-N, N '-diphenyl-1,3-diaminobenzene; 5; 5 "-two (two (4-aminomethyl phenyl) amino of 4-() phenyl)-2,2 ': 5 ', 2 '-many thiophene, 1,3,5-three (triphenyl is amino) basis, 4,4 '; 4 "-three (N-carbazole) triphenylamine, 4,4 '; 4 "-three (N-(3 " '-aminomethyl phenyl)-the N-phenyl amino) triphenylamine; 4,4 ', 4 "-three (N, N-two (4 " '-tert-butyl-phenyl-4 " "-yl) amino) triphenylamine; 1,3,5-three (N-(4 '-diphenyl amino phenyl)-N-phenyl amino) benzene etc.Described porphyrin compound can list such as porphyrin, 1,10,15,20-tetraphenyl-21H, 23H-porphyrin ketone (II), 1,10,15,20-tetraphenyl-21H, 23H-zinc porphyrin (II), 5,10,15,20-four (pentafluorophenyl group)-21H, 23H-porphyrin; As phthalocyanine derivates, can enumerate silicon phthalocyanine oxide, aluminium oxide phthalocyanine, metal-free phthalocyanine class, two lithium phthalocyanines, tetramethyl CuPc, CuPc, phthalocyanine chromium, Phthalocyanine Zinc, aluminum phthalocyanine, titanium oxide phthalocyanine, magnesium phthalocyanine, prestox CuPc etc.Described aromatic uncle amine compound and styrylamine compound, can enumerate such as N, N, N ', N '-tetraphenyl-4,4 '-diaminobenzene, N, N '-diphenyl-N, N '-two-(3-aminomethyl phenyl)-(1,1 '-xenyl)-4,4 '-diamines, 2,2-pair (4-two-to the triamido phenyl) propane, 1,1-pair (4-two-to the triamido phenyl) cyclohexane, N, N, N ', N '-four p-methylphenyls-4-4 '-diaminobenzene, 1,1-pair (4-two-to the triamido phenyl)-the 4-phenyl-cyclohexane-, two (4-dimethylamino-2-aminomethyl phenyl) phenylmethane, two (4-di-p-tolyl aminophenyl) phenylmethane, N, N '-diphenyl-N, N '-two (4-methoxyphenyl)-4,4 '-benzidine, N, N, N ', N '-tetraphenyl-4,4 '-diamino-phenyl ether, 4,4 '-two (diphenyl amino) quaterphenyl, N, N, N-three (p-tolyl) amine, 4-(two-p-methylphenyl is amino)-4 '-(4(two-p-methylphenyl is amino) styryl) equal benzene divinyl, 4-N, N-diphenyl amino-2-diphenylacetylene benzene, 3-methoxyl group-4 '-N, the equal benzene divinyl of N-diphenyl amino, N-phenyl carbazole etc.Wherein, preferred aryl groups-two (4-ammonia diaryl base phenyl) amine, the p-phenylene diamine derivative, 4,4 '-benzidine derivative, 4,4 '-diamino-diphenyl sulfane derivative, 4,4 '-diaminodiphenyl-methane derivative, 4,4 '-diamino-diphenyl ether derivant, 4,4 '-diaminodiphenyl-methane derivative, 4,4 '-diamino-diphenyl ether derivant, 4,4 '-diaminourea tetraphenylmethane derivative, 4, the equal benzene divinyl of 4 '-diaminourea derivative, 1,1-diaryl cyclohexanes class, 4; 4 " the many phenyl derivatives of-diaminourea, 5,10-two-(4-aminophenyl) anthracene derivant, 2, the 5-diaryl pyridines, 2,5-diaryl furans, 2,5-diaryl thiophene-based, 2,5-diaryl pyrrole class, 2,5-diaryl-1,3,4-oxadiazole class, the 4-(ammonia diaryl base) equal benzene divinyl class, 4,4 '-two (ammonia diaryl bases) are benzene divinyl class-N all, N-diaryl-4-(2, the 2-diphenylacetylene) phenyl amines, 2,5-diaryl-1,3, the 4-triazole type, 1,4-two (4-aminophenyl) naphthalene derivatives, 2, two (the ammonia diaryl base)-5-thioxanthene classes of 8-, 1,3-two (ammonia diaryl base) isoindoles etc., more preferably three (4-(N-(3-aminomethyl phenyl)-N-phenyl amino) phenyl) amine, three (4-(N-(2-naphthyl) N-phenyl amino) phenyl) amine etc.
In order to reduce the driving voltage of OLED luminescent device, improve the performance of OLED luminescent device, common way is to add electron acceptor (P type dopant material) in the hole injection layer of OLED luminescent device, improves the charge carrier conductibility.The P type dopant material that can be used as P type doping use comprises: (1) organic material, and such as 2,3,5,6-tetrafluoro-7,7', 8,8'-, four cyanogen dimethyl 1,4-benzoquinone (F4-TCNQ); (2) inorganic material is such as MoO
3, V
2O
5, ReO
3, Re
2O
7, FeCl
3And WO
3Deng.
In the above-mentioned OLED luminescent device, be used for making the material of electron injecting layer can be in the material that possesses electron transport property OLED any choice for use.Such material can list two (5 '-(to tert-butyl-phenyl)-1,3 such as 1,3-, 4-oxadiazole-2 '-yl) benzene, the 2-(4-xenyl)-the 5-(4-tert-butyl-phenyl)-1,3, the oxadiazole derivatives such as 4-oxadiazole, 3-(4 ' tert-butyl-phenyl)-4-phenyl-5-(4 "-biphenyl)-1,2; the triazole derivatives such as 4-triazole; three harness derivatives, quinoline, quinoxaline derivatices; two quinone derivatives; nitro replaces the Cong ketone derivatives, thiapyran dioxide derivative, anthraquinone bismethane derivative; thiapyran dioxide derivative; the heterocyclic tetraacid acid anhydrides such as naphthalene base perylene, carbodiimides, Cong are pitched methane Derivatives, anthraquinone bismethane derivative, anthracyclinone derivatives, diphenylethyllene pyrazines derivatives, Silole derivative, the phenanthroline derivative, imidazopyridine derivatives etc.In addition, can also enumerate two (10-benzo (h) oxyquinoline) berylliums, the beryllium salt of 5-hydroxyl brass, the organometallic complexs such as aluminium salt of 5-hydroxyl brass, the metal complex of oxine or derivatives thereof, such as three (oxine) aluminium (Alq), three (5,7-dichloro-8-hydroxyquinoline) aluminium, two (2-methyl-oxine) (p-phenylphenol) aluminium (BAlq), three (5,7-D-Br-8-HQ) aluminium.The metal-chelating immunomodulator compounds that contains chelating agent of the hydroxyquinoline metal complexs such as the plant hormones such as three (2-methyl-oxine) aluminium (generally speaking being oxine) etc.In addition, the central metal that can also enumerate these metal complexs is replaced by metal complex of beryllium, indium, magnesium, copper, calcium, tin, zinc or aluminium etc.Preferably use without metal or metal phthalocyanine, or their end is replaced into the material of alkyl, sulfo group etc.Wherein, more preferably use 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 3-phenyl-4-(1 '-naphthalene)-5-phenyl-1,2,4-triazole (TAZ).
Some inorganic metallic compound materials also can be used as the materials'use of OLED luminescent device electron injecting layer, electron transfer layer, for example can list LiF, CsF, Cs
2CO
3, LiN, Cs
3The materials such as N.
In order to make the OLED luminescent device obtain the low voltage drive effect, the structural form that the electron injecting layer of OLED luminescent device, electron transfer layer adopt N-type to mix usually, the material that can be used as N-type doping use can list the metal material of low working function, such as Li, Cs, K, Yb etc. also can enumerate some metal material oxides, fluoride, or nitride etc., such as Li
2O, CsF, Li
3N, CsN etc.
In the above-mentioned OLED luminescent device, the material that is used for making reflection electrode layer 10 can be selected: the composite material of high reflecting metal monomer (such as Al, Ag, Mg, Ca, Mo, W, Ni, Cr) etc. or these materials, also can list some amorphous alloys (for example NiP, NiB, CrP, CrB) or microcrystallizing alloy (for example NiAl), reflecting electrode can be by dry method such as vacuum evaporation, and vapour deposition or sputter form.The reflectivity of described reflecting electrode preferably is at least 50%, more preferably is at least 80%.
What need here to further specify is, consists of the reflecting electrode material of OLED luminescent device of the present invention, and basic demand refers to that this material can reflect the OLED electroluminescence fully, and makes it propagate into that device is outside to be got final product.Therefore, so-called reflecting electrode also can be made of the version that multiple different materials is superimposed, for example Ag and ITO stack, the stacking pattern of Al and IZO etc., here, no matter be that Ag or Al are the high reflectance electric conducting material, ITO or IZO have good transmitance, can effectively cover Ag or Al material surface, and adjust the wave form of OLED luminescent device.
In addition, the OLED luminescent device that the present invention pushes up in the luminous full color OLED display device structure can also be the laminated construction that includes two above organic luminescence function film layer combinations 9, isolates by charge generating layer between the adjacent organic luminescence function film layer combination 9.For lamination OLED luminescent device, its characteristics are, are easy to realize long-life and the high efficiency of OLED luminescent device.
The key that lamination OLED luminescent device is made is the selection of charge generating layer, can be selected from as the material of charge generating layer materials'use one or more the mixture in following structural 1 material, structural formula 2 materials, and described structural formula is:
Also can choice for use P type, electronics or the hole material of n type material doping device consist of.The lamination OLED luminescent device of the charge generating layer that consists of as P type and N-type doped forms, its manufacture craft can be referring to doping and the low-voltage technology mode of hole injection layer and electron injecting layer in the aforementioned OLED device making technics.
In order to prevent planarization rete 7, the steam of filling in the dielectric material such as the bed of material enters the OLED luminescent device, can as required on OLED luminescent device apex electrode, perhaps comprise on the color transformed film material and make protective layer material.Its material and process can be referring to the protective layers that covers on the aforementioned filter rete.
Shown in Figure 3 is full color OLED display the second structural form of the present invention, structural form institute difference shown in itself and Fig. 2 is, consist of the continuous OLED luminescent device apex electrode that is covered in red pixel of the color transformed rete of full color OLED display, green pixel OLED luminescent device apex electrode and and the space between them on, the luminescence generated by light of green tint coversion material is served green and red two kinds of pixels.
Shown in Figure 4 is the third structural form of full color OLED display of the present invention, shown in itself and Fig. 2 structural form institute difference be, the color transformed rete that consists of the full color OLED display not only covers on the apex electrode of green emitting pixel OLED luminescent device, also be covered on the apex electrode of red OLED luminescent device, the luminescence generated by light of green tint coversion material is served green and red two kinds of pixels.The comparative example 2, and this formation characteristics only are that the selectivity of color change rete processes is different, do not consist of impact for the efficient performance of full color OLED display.
Make embodiment 1
The manufacturing step operation:
(1) makes filter sheet base plate, its specification is 2.4 cun QVGA specifications, the thickness of the Red lightscreening plate rete 5 in the filter sheet base plate, green color filter rete 4 and blue color filter rete 2 is 3 microns, and the transmitance of different colours filter rete as shown in Figure 6.
(2) driver element 11 adopts the LTPS-TFT substrate, and its form with consigned processing obtains from company of Taiwan Chunghwa Picture Tubes (CPT), and the specification of LTPS-TFT substrate is 2.4 cun QVGA.
(3) make top-illuminating OLED luminescent device (the OLED luminescent device structure of different pixels is identical) at above-mentioned LTPS-TFT substrate, concrete structure as shown in Figure 2, from the bottom to top layers of material and thickness are as follows:
1. reflection electrode layer 10: material, Ag; Thickness, 100nm;
2. the transparent covering layer on the reflection electrode layer 10: material, IZO; Thickness, 8nm; This transparent covering layer is to exist as the part of reflecting electrode, is micronic dust and the projection that covers on the reflecting electrode for good on the one hand, can play on the other hand the effect of adjusting OLED luminescent device outgoing spectrum;
3. the combination of organic luminescence function film layer 9, comprising:
3a. hole injection layer: material selection structural formula 4 materials; Thickness, 40nm;
3b. hole transmission layer: material selection structural formula 5 materials; Thickness, 10nm;
3c. red blue dual color light emitting layer: material is made of by the ratio of weight and number mixing of 1:90:9 structural formula 9,10,11 materials; Thickness, 30nm;
3d. electron transfer layer: material selection structural formula 8 materials; Thickness 20nm;
3e. electron injecting layer: material selection LiF; Thickness 1nm;
3f. charge generating layer: the rete stack by two kinds of different materials forms, and a kind of is material selection Al; Thickness 4nm; Another kind is material selection structural formula 1 material; Thickness 10nm;
3g. hole transmission layer: material selection structural formula 5 materials; Thickness 25nm;
3h. blue light-emitting layer: material is mixed by the ratio of weight and number of 97:3 by structural formula 7 materials and structural formula 6 materials and consists of; Thickness, 30nm;
3i. electron transfer layer: material selection structural formula 8 materials; Thickness 20nm;
3j. euphotic electrode layer 8: material is mixed by the ratio of weight and number of 10:1 by Mg and Ag and consists of; Thickness, 30nm.
(4) making of green tint conversion rete 6: on the euphotic electrode layer 8 of above-mentioned OLED luminescent device corresponding to green color filter rete 4, by the material of following structural formula 12 on the mode evaporation of metal mask contraposition, making thickness is 400nm green tint conversion rete 6.
(5) protective layer: adopt the CVD film forming to prevent from making the SiN protective layer; Thickness, 240nm.
(6) above-mentioned OLED luminescent device and the filter sheet base plate with driver element 11 of making green tint conversion rete 6 is glued together.
(7) the luminous full color OLED display in top of making preparation among the embodiment 1 is tested, various performance parameters is as shown in table 1.
Make embodiment 2
Making embodiment 2 is with the difference of making embodiment 1, make among the embodiment 2, two groups of different navy blue earth complex luminescent component and emitting red light component have been comprised in the luminescent spectrum of OLED luminescent device, specifically, the red blue dual color light emitting layer that to make exactly among the embodiment 1 is changed into red and navy blue luminescent layer, this redness and navy blue luminescent layer were made of three stacked adding, every layer the material that uses and thickness as follows:
Ground floor: material is mixed according to the weight proportion of 97:3 by structural formula 14 materials and structural formula 13 materials and consists of thickness 10nm;
The second layer: material selection structural formula 8 materials, thickness, 2nm;
The 3rd layer: material is mixed according to the weight proportion of 93:7 by structural formula 8 materials and structural formula 9 materials and consists of thickness 15nm;
The luminous full color OLED display in top of making preparation among the embodiment 2 is tested, and various performance parameters is as shown in table 1.
Make embodiment 3
Making embodiment 3 is with the difference of making embodiment 1, make among the embodiment 3, the green tint conversion rete 6 of evaporation not only covers on the euphotic electrode layer 8 corresponding to the OLED luminescent device of green color filter rete 4 on the OLED luminescent device, but cover on the euphotic electrode layer 8 corresponding to the OLED luminescent device of green color filter rete 4 and Red lightscreening plate rete 5, and corresponding to the green tint conversion rete 6 on the euphotic electrode layer 8 of the OLED luminescent device of green color filter rete 4 be connected as a single entity corresponding to the green tint conversion rete 6 on the euphotic electrode layer 8 of the OLED luminescent device of Red lightscreening plate rete 5.That is to say by disposable film forming, continuity be covered in zone between red green pixel and the red green pixel comprehensively.
The luminous full color OLED display in top of making preparation among the embodiment 3 is tested, and various performance parameters is as shown in table 1.
Make embodiment 4
Make embodiment 4 and be with the difference of making embodiment 1, make among the embodiment 4, made one deck insulation film protective layer material on the OLED luminescent device euphotic electrode layer 8, its material is the MoO3 thin-film material, and its thickness is 320nm.Then institute's allocation of OLED luminescent device on above-mentioned insulation film protective layer material continues to make color transformed rete and protective layer.
The luminous full color OLED display in top of making preparation among the embodiment 4 is tested, and various performance parameters is as shown in table 1.
Comparing embodiment 1
Comparing embodiment 1 is compared with making embodiment 1, and difference is there is not green tint coversion material rete in the comparing embodiment 1.
The luminous full color OLED display in top that compares preparation among the embodiment 1 is tested, and various performance parameters is as shown in table 1.
Table 1
* is described: relative intensity is the result that the pixel luminous efficiency with the luminous full color OLED display in top of making in the comparing embodiment 1 compares as standard.
Result from table 1 can find out, the above-mentioned luminous full color OLED display in top of implementing according to process means of the present invention and structure content made is all very good for the performance of three kinds of different colors of RGB.
Claims (18)
1. push up luminous full color OLED display, comprise filter sheet base plate, color transformed rete, OLED luminescent device and be used for the luminous driver element (11) of driving OLED luminescent device; Described filter sheet base plate comprises transparency carrier (1), blue color filter rete (2), black matrix" grid rete (3), green color filter rete (4) and Red lightscreening plate rete (5), blue color filter rete (2), green color filter rete (4) and Red lightscreening plate rete (5) cover on the transparency carrier (1), and black matrix" grid rete (3) is arranged between the filter rete of these three kinds of colors; Described OLED luminescent device comprises euphotic electrode layer (8), the combination of organic luminescence function film layer (9) and reflection electrode layer (10), the color transformed rete that euphotic electrode layer (8) is contiguous above-mentioned, organic luminescence function film layer combination (9) and reflection electrode layer (10) are successively set on the another side of euphotic electrode layer (8); It is characterized in that: described color transformed rete is green tint conversion rete (6), and it covers on the euphotic electrode layer (8) corresponding to the OLED luminescent device of green color filter rete (4); Comprise in the electroluminescent luminescent spectrum that described OLED luminescent device produces in the energising situation CIE chromaticity coordinates Y value less than 0.55 blue-light-emitting component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
2. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: described green tint conversion rete (6) covers on the euphotic electrode layer (8) corresponding to the OLED luminescent device of green color filter rete (4) and Red lightscreening plate rete (5), and corresponding to the green tint conversion rete (6) on the euphotic electrode layer (8) of the OLED luminescent device of green color filter rete (4) be separated from each other corresponding to the green tint conversion rete (6) on the euphotic electrode layer (8) of the OLED luminescent device of Red lightscreening plate rete (5).
3. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: described green tint conversion rete (6) covers on the euphotic electrode layer (8) corresponding to the OLED luminescent device of green color filter rete (4) and Red lightscreening plate rete (5), and corresponding to the green tint conversion rete (6) on the euphotic electrode layer (8) of the OLED luminescent device of green color filter rete (4) be connected as a single entity corresponding to the green tint conversion rete (6) on the euphotic electrode layer (8) of the OLED luminescent device of Red lightscreening plate rete (5).
4. the luminous full color OLED display in top as claimed in claim 1 is characterized in that: comprise in the electroluminescent luminescent spectrum of described OLED luminescent device at least two kinds of CIE chromaticity coordinates Y values less than 0.25 navy blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
5. the luminous full color OLED display in top as claimed in claim 1 is characterized in that: comprise in the electroluminescent luminescent spectrum of described OLED luminescent device at least a CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, at least a CIE chromaticity coordinates Y greater than 0.25 and less than 0.55 light blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
6. the luminous full color OLED display in top as claimed in claim 1 is characterized in that: the electroluminescent luminescent spectrum of described OLED luminescent device comprise CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, CIE chromaticity coordinates Y value greater than 0.25 and less than 0.55 light blue earth complex luminescent component and CIE chromaticity coordinates X value greater than 0.64 emitting red light component.
7. the luminous full color OLED display in top as claimed in claim 1 is characterized in that: the electroluminescent luminescent spectrum of described OLED luminescent device comprise CIE chromaticity coordinates Y value less than 0.25 navy blue earth complex luminescent component, CIE chromaticity coordinates Y value greater than 0.25 and less than 0.55 light blue earth complex luminescent component, CIE chromaticity coordinates X value greater than the first emitting red light component of 0.64, CIE chromaticity coordinates X value greater than the second emitting red light component of 0.64.
8. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: the material of described green tint conversion rete (6) comprises the fluorchrome material, fluorchrome material in the described green tint conversion rete (6) is selected from one or more the mixture in the organic fluorescent material with following formula, and described general formula is:
General formula 1
R1 in the general formula 1, R2 represent with the aromatic functional group on C-C key or the C-N Lian Jie Yu perylene group;
General formula 2
R1 in the general formula 2, R2, R3, R4 represent to be connected in aromatic functional group on the anthryl group with C-C key or C-N;
General formula 3
R1 in the general formula 3, R2, R3, R4 represent to be connected in aromatic functional group on the core group with C-C key or C-N.
9. the luminous full color OLED display in top as claimed in claim 1 is characterized in that: be provided with one deck transparent insulated thin-film material layer between the euphotic electrode layer of described OLED luminescent device (8) and the green tint conversion rete (6).
10. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: described OLED luminescent device comprises the first electrode, at least one combination of organic luminescence function film layer (9) and second electrode, described at least one organic luminescence function film layer combination (9) is arranged between the first electrode and the second electrode, described the first electrode and the second electrode can be reflection electrode layer (10) or euphotic electrode layer (8), comprise at least a luminescent layer in the described organic luminescence function film layer combination (9).
11. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: described OLED luminescent device is single device OLED luminescent device, luminescent layer in its organic luminescence function film layer combination (9) can send the first blue-light-emitting, the second blue-light-emitting and emitting red light simultaneously, and this moment, the structure of luminescent layer can list following multiple structure:
(1) can send simultaneously the individual layer luminescent layer of the first blue-light-emitting, the second blue-light-emitting and emitting red light;
(2) first blue and red light emitting layer/second blue light-emitting layers;
(3) first blue and the second blue light-emitting layer/red light emitting layers;
(4) the first blue light-emitting layers/red light emitting layer/the second blue light-emitting layer;
(5) red light emitting layer/first blue light-emitting layer/second blue light-emitting layer;
The luminescent layer of above-mentioned various different colors is that the object luminescent material mixing and doping by corresponding color forms in material of main part, described object luminescent material is simple fluorescent material, phosphor material or is formed by different fluorescent materials and phosphor material matched combined, can obtain so high efficiency OLED luminescent device with multiple earth complex luminescent component.
12. the luminous full color OLED display in top as claimed in claim 1, it is characterized in that: described OLED luminescent device is the laminated construction that includes plural organic luminescence function film layer combination (9), there are many group organic luminescence function film layer combinations (9) between its first electrode and the second electrode, isolate by charge generating layer between the adjacent organic luminescence function film layer combination (9).
13. the luminous full color OLED display in top as claimed in claim 12, it is characterized in that: described OLED luminescent device comprises two organic luminescence function film layer combinations (9), comprise the first blue-light-emitting component, the second blue-light-emitting component and emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, the type OLED luminescent device can list following multiple structure:
Blue and red organic luminescence function film layer combination (9)/second electrode of the blue organic luminescence function film layer combination of (1) first electrode/first (9)/charge generating layer/second;
(2) first electrodes/first blueness and the second blue-light-emitting organic functions rete combination/charge generating layer/emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
14. the luminous full color OLED display in top as claimed in claim 12, it is characterized in that: described OLED luminescent device comprises two organic luminescence function film layer combinations (9), comprise blue-light-emitting component and the first emitting red light component and the second emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, the type OLED luminescent device can list following multiple structure:
(1) first electrode/blueness and the first emitting red light organic functions rete combination/charge generating layer/the second emitting red light organic functions rete combination the/the second electrode;
(2) the first electrodes/blue-light-emitting organic functions rete combination/charge generating layer/first redness and the second emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
15. the luminous full color OLED display in top as claimed in claim 12, it is characterized in that: described OLED luminescent device comprises two organic luminescence function film layer combinations (9), comprise the first blue-light-emitting component, the second blue-light-emitting component, the first emitting red light component and the second emitting red light component in the electroluminescent luminescent spectrum of described OLED luminescent device, this OLED luminescent device can list following multiple structure:
(1) first electrode/first is blue and the first red organic luminescence function film layer combination (9)/charge generating layer/second is blue and the second red organic luminescence function film layer combination (9)/second electrode;
(2) first electrodes/first is blue and the second blue-light-emitting organic functions rete combination/charge generating layer/first is red and the second emitting red light organic functions rete combination the/the second electrode;
In the rete combination of two kinds of earth complex luminescent component of above-mentioned generation, the version of its luminescent layer can be to be mixed separately among a kind of material of main part by two kinds of different object luminescent materials, and adopt the rete stack to consist of, also can be to be consisted of among a kind of material of main part by the blending of two kinds of object luminescent materials.
16. the luminous full color OLED display in top as claimed in claim 12, it is characterized in that: when the OLED luminescent device comprises at least three organic luminescence function film layer combinations (9), the kind of the different color earth complex luminescent component in the electroluminescent luminescent spectrum of described OLED luminescent device should be more than or equal to the number of organic luminescence function film layer combination (9), and should comprise at least a color earth complex luminescent component in each organic luminescence function film layer combination (9), all organic luminescence function film layer combination (9) in any order stack between the first electrode of OLED luminescent device and the second electrode, adjacent organic luminescence function film layer makes up between (9) isolates by charge generating layer.
17. such as the luminous full color OLED display in each described top of claim 11 ~ 16, it is characterized in that: having a kind of material in the object luminescent material in the described OLED luminescent device at least is the organic phosphorescent material that contains iridium, nail, platinum, rhenium and palladium metal.
18. such as the luminous full color OLED display in each described top of claim 4 ~ 7, it is characterized in that: when comprising navy blue earth complex luminescent component and light blue earth complex luminescent component in the luminescent spectrum of OLED luminescent device, navy blue is luminous to be produced by fluorescent material, and light blue luminous and emitting red light is produced by phosphor material.
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