CN102916035B

CN102916035B - Large-size full-color OLED (Organic Light-Emitting Diode) display

Info

Publication number: CN102916035B
Application number: CN201210309010.4A
Authority: CN
Inventors: 李崇
Original assignee: Jiangsu Sanyue Optoelectronic Technology Co Ltd
Current assignee: Jiangsu Sunera Technology Co Ltd
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2015-04-22
Anticipated expiration: 2032-08-28
Also published as: CN102916035A

Abstract

The invention relates to a large-size full-color OLED (Organic Light-Emitting Diode) display, which comprises a complete color converting base plate and a display module. The large-size full-color OLED display is characterized in that a green color converting film is covered on a green filter plate film; the display module is formed by assembling a plurality of display units; each display unit comprises a transparent base plate, a plurality of OLED luminescent devices and a control loop for driving the OLED luminescent devices to radiate light; the transparent base plates are seamlessly adhered onto a red filter plate film, a green filter plate film, a blue filter plate film, a black matrix grid film and a green color converting film on the color converting base plate through colloidal packing material; and each OLED luminescent device in the display unit has a filter plate film on the color converting base plate corresponding to the OLED luminescent device independently. The large-size full-color OLED display has the advantages of being good in visual effect, high in yield and the like, is capable of being convenient to realize size dimension, and is beneficial for improving the performance price ratio for manufacturing the display.

Description

Large scale full color OLED display

Technical field

The present invention relates to a kind of large-sized monitor manufacturing technology field, specifically a kind of large scale full color OLED (organic electroluminescent) display adopting color cycling and OLED display module splicing to manufacture.

Background technology

Along with developing rapidly of electronics industry, and society's improving constantly that information display products is required, can be applicable to airport, shopping mall, Surveillance center, stadiums etc., occur the huge market demand for the indoor type in Information Communication, news briefing, securities trading or half indoor type large-scale flat-panel screens product.As traditional technology providing large-scale information displaying----LED large scale display, be integrated with microelectric technique, computer technology, the information processing technology etc. in one, with its strong chromatic stimulus, the advantage such as dynamic range is wide, brightness is high, the life-span is long, working stability is reliable, become the only selection of outdoor display application.But showing for product for large scale plane full color OLED that is indoor and half indoor application, more there are following several respects and requires in market:

1, blank screen better effects if, contrast is higher, pursues more perfect vision effect;

2, uniformity of luminance in good display panel, without vision difference and splicing sense, good complanation display effect;

3, the soft warmth of color, picture effect is good;

4, reliability and stability are under various circumstances high, convenient mobile and assembling;

5, cost is more cheap, and cost performance is higher.

Because traditional LED shows product provide point light source light-emitting, visual stimulus degree is strong, and long-time observation easily causes visual fatigue and dazzle.It is the seamed formation full-color display that is stitched together of employing standard display module simultaneously, and picture continuity poor effect, when therefore its technology is applied to indoor display, is subject to great restriction.This provides chance for other flat panel display technology enter large scale display field.

OLED is the representative of latest generation Display Technique, and because it adopts organic material luminous, be again area source, visual effect is soft simultaneously, and image quality is exquisite and have third dimension, is the substitute products of the excellent high-end display application of large scale.In prior art, manufacture full color OLED display has three kinds of different production methods usually: the first is by directly applying electric field to OLED luminescent devices different on picture element matrix, thus obtains " the red green blue tricolor illumination mode " of independently RGB luminescence; The second is that the OLED utilizing the filter coating of different color cutting background White OLED luminescent device to produce is luminous, thus obtains " white light adds filter mode " of red-green-blue luminescence; The third is the effective OLED earth complex luminescent component absorbed by color transformed film in background ultraviolet, blueness, light blue or White OLED luminescent device, wherein will transform into low-energy green glow or ruddiness by high-octane blue-light-emitting, thus obtain " color change manner " of redgreenblue luminescence.

Two kinds of full color OLED display manufactures compare above, and color change manner is easy to the ratio of performance to price improving display manufacturing when manufacturing display.Can provide the luminescence of lambert's volumetric pixel, the OLED display made visually has more aesthetic feeling simultaneously.In the process structure of traditional manufacture full color OLED display screen, comprise color transformed substrate and OLED luminescent device, transparency carrier is coated with successively redgreenblue filter membranous layer and black matrix" grid rete, the color transformed rete of red green two kinds of colors, planarization rete and protective layer, thus forms color transformed substrate; Color transformed rete is provided with and comprises transparency conductive electrode layer, the combination of organic luminescence function film layer and the OLED luminescent device of reflection electrode layer.

Current, for large scale OLED display screen manufacturing technology, 55 cun of specifications can be only by the display of maximum area that directly manufactures of monoblock substrate, what adopt is also conventional OLED full color process technology, cannot manufacture the display screen (as the display screen that size is greater than 100 cun) of more individual specification, this causes difficulty for this technology enters large-size screen monitors display market.

Mitsubishi Electric Co. discloses a kind of technology adopting standard display module connecting method to manufacture large scale OLED display screen for 2009, adopt this technology, the said firm uses the standard total colouring module of 96mm × 96mm, has produced the OLED display screen of 155 cun of specifications.This technology effective make use of OLED face luminous characteristics, has color soft, self-luminous, the advantage of image quality fineness, achieves the breakthrough that OLED is presented at the indoor application of large scale.

From the technical matters of the large scale OLED display screen of the Mitsubishi Electric Co. of known report, what its display module adopted is RGB manufacture craft mode, its essential characteristic is, each sub-pixel forming large scale full color OLED display is produced separate red by the metal cap technique of counterpoint of precision, green, primary colors OLED luminescent device (shown in Fig. 1), red OLED luminescent device 14 on control loop 11 pairs of different subpixel matrixes, green OLED luminescent device 13, Blue OLED luminescent device 12 directly applies electric field respectively, thus it is luminous to obtain independently RGB.This process characteristic is that namely each pixel is an OLED luminescent device, and the OLED luminescent device of three kinds of colors is mixed together performance white light, gold-tinted and other various color light.

But it is current, with regard to three primary colors OLED Development of Photo And Cathodoluminescent Materials level, Blue OLED luminescent material, its photo-quantum efficiency only can reach the level of 6-8%, long-time driving uses, life-span is only 20,000 hours, and this lags far behind green and red material photo-quantum efficiency more than 20%, the development level in useful life of hundreds thousand of hours.Therefore in a sense, the reality that Nan dian Yao material falls behind relatively, forms technical bottleneck to OLED display industries itself, also causes certain obstruction to the application development of large-size screen monitors display simultaneously.Exactly because the existence of OLED material different qualities greatest differences, the large scale OLED display screen of Mitsubishi Electric Corporation is when long-time driving, because the too fast deterioration of blue light pixel, inherently there is the degradation effects of color drift in full color OLED display screen, there is the problem of color stability difference.The large scale OLED display of Mitsubishi Electric Corporation is arranged together by resemble construction ceramics paster is equally simple by little standard display unit simultaneously, though very close between each standard display unit, but inherently there is certain gap, display module can not be guaranteed to remain on a fully-flattened completely simultaneously, this is as traditional LED mosaic screen, certain vision difference can be caused, shortcoming is caused to the overall visual effect of large scale display screen.

Summary of the invention

The present invention is on the basis of fully analyzing and researching the various technical barriers that traditional various making large scale full color OLED display technical schemes face, past various large scale full color OLED display manufacture method and technique are being developed and innovated, the creationary manufacturing technology providing a kind of employing color change manner making large scale full color OLED display completely newly, the large scale full color OLED display of this fabrication techniques is adopted to have good visual effect, yields is high, the advantages such as size can conveniently realize, be conducive to improving display manufacturing cost performance, OLED technology is made to enter indoor high-end large scale display application field.

According to technical scheme provided by the invention: large scale full color OLED display, comprise one piece of complete color transformed substrate and display module, described color transformed substrate comprises transparency carrier, a surface of transparency carrier is coated with Red lightscreening plate rete, green color filter rete and blue color filter rete, between the filter rete of described various color, is provided with black matrix" grid rete; It is characterized in that: described green color filter film layer is coated with green tint conversion rete; Described display module is spliced by multiple display unit and forms, each display unit comprises a transparent substrates, multiple OLED luminescent device and for driving the control loop of described multiple OLED luminescent device luminescence, described transparent substrates is by the Red lightscreening plate rete of colloid inserts seamless adhesion on color transformed substrate, green color filter rete, blue color filter rete, black matrix" grid rete and green tint conversion rete, and each OLED luminescent device in described display unit all has the filter rete on a color transformed substrate corresponding separately with it; Described OLED luminescent device can produce electroluminescence in energising situation, and described electroluminescent luminescent spectrum comprises blue-light-emitting component and the dissimilar CIE chromaticity coordinates X value of at least one emitting red light component that is greater than 0.64 that at least two kinds of dissimilar CIE chromaticity coordinates Y values are less than 0.55.

In the present invention, as preferably, the electroluminescent luminescent spectrum of described OLED luminescent device comprises navy blue earth complex luminescent component, CIE chromaticity coordinates Y value that CIE chromaticity coordinates Y value is less than 0.25 and is greater than 0.25 and is less than light blue earth complex luminescent component and the CIE chromaticity coordinates X value emitting red light component that is greater than 0.64 of 0.55.

In the present invention, as preferably, the electroluminescent luminescent spectrum of described OLED luminescent device comprise navy blue earth complex luminescent component, CIE chromaticity coordinates Y value that CIE chromaticity coordinates Y value is less than 0.25 be greater than 0.25 and be less than the light blue earth complex luminescent component of 0.55, the second emitting red light component that the first emitting red light component, CIE chromaticity coordinates X value that CIE chromaticity coordinates X value is greater than 0.64 are greater than 0.64.

In the present invention, the making of green tint on the color transformed substrate of described monoblock conversion rete is core content, and green tint conversion rete has three kinds of structures: the first above-mentioned is only formed with green tint conversion rete in green color filter film layer.The second is coated with at green color filter rete and Red lightscreening plate film layer the green tint conversion rete be made up of same green tint coversion material, and this green tint conversion rete can be formed by the mode of disposable film forming.Comprehensively the third be coated with in green color filter rete, Red lightscreening plate rete and the black matrix" grid film layer between them the green tint conversion rete be made up of same green tint coversion material, and this green tint conversion rete can be completed by one technological process.

In the present invention, the material of described green tint conversion rete comprises Fluorescent dye material, and the Fluorescent dye material in described green tint conversion rete is selected from the mixture of one or more had in the organic fluorescent material of following formula, and described general formula is:

R1, R2 in general formula 1 represent with the aromatic functional group on C-C key or C-N Lian Jie Yu perylene group;

R1, R2, R3, R4 in general formula 2 represent the aromatic functional group be connected to C-C key or C-N on anthryl group;

R1, R2, R3, R4 in general formula 3 represent the aromatic functional group be connected to C-C key or C-N on core group.

In order to ensure color transformed substrate surface opposed flattened after green tint conversion rete makes, when making above-mentioned Red lightscreening plate rete, green color filter rete, blue color filter rete and green tint conversion rete, the thickness of blue color filter rete, Red lightscreening plate rete suitably can be adjusted as required.

Further, after green tint conversion rete makes, can be as required, optionally make at above-mentioned green tint conversion rete and blue color filter film layer the planarization rete be adjacent, the object of this planarization rete is smooth color transformed substrate surface, below the micronic dust that simultaneously front road manufacturing procedure can also be produced at color transformed substrate surface and photoetching residue effectively cover, reduce the generation of color transformed substrate surface projection, thus lay a solid foundation for next procedure.

In addition; on above-mentioned planarization rete, the protective layer be adjacent can also be set; the object of this protective layer is to prevent described black matrix" grid rete, Red lightscreening plate rete, green color filter rete and blue color filter rete; and a small amount of steam comprised in green tint conversion rete enters OLED luminescent device, avoids device degradation.

In the present invention, the various retes of the color transformed substrate of described formation can choice for use photoetching, printing, vacuum evaporation, laser turn penetrate, the existing technical approach such as sputtering processes.

In the present invention, form the display module of large scale OLED display primarily of transparent substrates, multiple OLED luminescent device and control loop composition, OLED luminescent device is wherein vital parts.Described OLED luminescent device comprises the first electrode, the combination of at least one organic luminescence function film layer and the second electrode, described at least one organic luminescence function film layer combination is arranged between the first electrode and the second electrode, described first electrode and the second electrode can be reflection electrode layer or transparency conductive electrode layer, at least comprise a luminescent layer in described organic luminescence function film layer combination.

In the present invention, described OLED luminescent device can have single device architecture and laminated construction two kinds of versions, 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, and the electrode of this single device OLED luminescent device and organic luminescence function film layer combine the different layers structural form that 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.

For single device OLED luminescent device, luminescent layer in the combination of its organic luminescence function film layer needs to send navy blue luminescence, light blue luminescence and emitting red light simultaneously, described luminescent layer can be single light-emitting layer, also can be the sandwich construction be mutually superimposed by different color luminescent layer, different color luminescent layer produces different color light, and mixing forms multicomponent electroluminescence; The structure of described luminescent layer can list following multiple structure:

(1) single light-emitting layer of navy blue luminescence, light blue luminescence and emitting red light can be sent simultaneously;

(2) navy blue and red light emitting layer/light blue luminescent layer;

(3) light blue and red light emitting layer/navy blue luminescent layer;

(4) navy blue and light blue luminescent layer/red light emitting layer;

(5) navy blue luminescent layer/red light emitting layer/light blue luminescent layer;

(6) red light emitting layer/navy blue luminescent layer/light blue luminescent layer;

(7) navy blue luminescent layer/light blue luminescent layer/red light emitting layer;

The luminescent layer of described variant color is formed in material of main part by the guest emitting material mixing and doping of corresponding color, described guest emitting material is simple fluorescent material, phosphor material or is formed by different fluorescent materials and phosphor material matched combined, can obtain the high efficiency OLED luminescent device with multiple earth complex luminescent component like this.

For the OLED luminescent device of multiple earth complex luminescent component color structure, in order to effectively regulate the combination of carrier electric charge in luminescent layer, the thickness of each luminescent layer of above-mentioned OLED luminescent device and the doping content of guest emitting material can regulate arbitrarily as required, or as required different color luminescent layer is replaced stack combinations, the electric charge and energetic barrier etc. of undoped can also be inserted between adjacent luminescent layer.

The second structure of OLED luminescent device: described OLED luminescent device is the laminated construction including the combination of plural organic luminescence function film layer, for lamination OLED luminescent device, organize organic luminescence function film layer exist between its first electrode and second electrode to combine more, isolated by charge generating layer (being also called charge separating) between adjacent organic luminescence function film layer combination.Lamination OLED luminescent device is compared with single device OLED luminescent device, under same current density drives under electric field action, can discharge double number of photons, thus can produce higher internal quantum, the detailed construction about lamination OLED luminescent device can see Chinese patent CN1447629.

In 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 electrode/the first organic luminescence function film layer combination/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 electrodes;

(3) first electrode/the first organic luminescence function film layer combination/the first charge generating layer/the second luminescent device organic luminescence function film layer combination the/the second charge generating layers/... N organic luminescence function film layer combination the/the second electrode;

At least two kinds of dissimilar blue-light-emitting components and the dissimilar emitting red light component of at least one is comprised in order to make the electroluminescent luminescent spectrum of lamination OLED luminescent device, the guest emitting material of different color can be dispersed in different organic luminescence function film layer combinations, finally make the OLED luminescent device that can meet the demands.

In 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 two organic luminescence function film layer combinations, the electroluminescent luminescent spectrum of described OLED luminescent device comprises navy blue earth complex luminescent component, light blue earth complex luminescent component and emitting red light component, and this OLED luminescent device can list following multiple structure:

(1) the first electrode/navy blue organic luminescence function film layer combination/charge generating layer/light blue and red organic luminescence function film layer combination the/the second electrode;

(2) the first electrodes/navy blue and light blue luminous organic functions rete combination/charge generating layer/emitting red light organic functions rete combination the/the second electrode;

(3) the first electrodes/navy blue and emitting red light organic functions rete combination/charge generating layer/light blue

Organic luminescence function film layer combination the/the second electrode.

In the rete combination of above-mentioned generation two kinds of earth complex luminescent component, the version of its luminescent layer can be mix separately among a kind of material of main part by two kinds of different guest emitting material, and adopt rete to superpose formation, also can be made up of among a kind of material of main part two kinds of guest emitting material blendings.

Two, described OLED luminescent device comprises two organic luminescence function film layer combinations, the electroluminescent luminescent spectrum of described OLED luminescent device comprises navy blue earth complex luminescent component, light blue earth complex luminescent component, the first emitting red light component and the second emitting red light component, and this OLED luminescent device can list following multiple structure:

(1) the first electrode/navy blue and the first red organic luminescence function film layer combination/charge generating layer/light blue and second red organic luminescence function film layer combination the/the second electrode;

(2) the first electrodes/navy blue and light blue luminous organic functions rete combination/charge generating layer/the first is red and the second emitting red light organic functions rete combines the/the second electrode;

(3) the first electrodes/navy blue and the second emitting red light organic functions rete combination/charge generating layer/light blue and first red organic luminescence function film layer combination the/the second electrode.

Three, described OLED luminescent device comprises the combination of navy blue organic luminescence function film layer, the combination of light blue organic luminescence function film layer and the combination of red organic luminescence function film layer, these three organic luminescence function film layer are combined in the first electrode of OLED luminescent device and superpose in any order with between the second electrode, are isolated between adjacent organic luminescence function film layer combination by charge generating layer.

Four, described OLED luminescent device comprises three organic luminescence function film layer combinations, these three organic luminescence function film layer are combined in the first electrode of OLED luminescent device and superpose in any order with between the second electrode, are isolated between adjacent organic luminescence function film layer combination by charge generating layer; The electroluminescent luminescent spectrum of described OLED luminescent device comprises navy blue earth complex luminescent component, light blue earth complex luminescent component, the first emitting red light component and the second emitting red light component, and the organic luminescence function film layer combination that this OLED luminescent device comprises can be listed below:

(1) described OLED luminescent device comprises navy blue and the first red organic luminescence function film layer combination, the combination of light blue organic luminescence function film layer and the second red organic luminescence function film layer combination;

(2) described OLED luminescent device comprises navy blue and the combination of light blue luminous organic functions rete, the first emitting red light organic functions rete combination, the second emitting red light organic functions rete combination;

(3) described OLED luminescent device comprises navy blue and the combination of the second emitting red light organic functions rete, the combination of light blue organic luminescence function film layer, the first red organic luminescence function film layer combination;

(4) described OLED luminescent device comprises the combination of navy blue luminous organic functions rete, light blue and the first red organic luminescence function film layer combines, the second red organic luminescence function film layer combination;

(5) described OLED luminescent device comprises the combination of navy blue luminous organic functions rete, light blue and the second red organic luminescence function film layer combines, the first red organic luminescence function film layer combination;

(6) described OLED luminescent device comprises the combination of navy blue luminous organic functions rete, the combination of light blue organic luminescence function film layer, first red and the second red organic luminescence function film layer combination.

Five, described OLED luminescent device comprises the combination of navy blue organic luminescence function film layer, the combination of light blue organic luminescence function film layer, the first red organic luminescence function film layer combination and the second red organic luminescence function film layer combination, these four organic luminescence function film layer are combined in the first electrode of OLED luminescent device and superpose in any order with between the second electrode, are isolated between adjacent organic luminescence function film layer combination by charge generating layer.

In the OLED luminescent device of the laminated construction of above-mentioned multiple structure, the material of described charge generating layer is selected from the mixture of one or more in following structural 1 material, structural formula 2 material, and described structural formula is:

In above-mentioned several lamination OLED luminescent devices, the organic luminescence function film layer combination of different color can select the front portion or the rear portion that are produced on charge generating layer as required.Preferably, the combination of navy blue organic luminescence function film layer is positioned at the side of charge generating layer, and light 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, between the electrode of adjacent OLED luminescent device, insulating layer material material should be provided with.

In the present invention, a kind of material in the guest emitting material in described OLED luminescent device, is had at least to be organic phosphorescent material containing iridium, nail, platinum, rhenium and palladium metal.Be preferable over, navy blue luminescence is produced by fluorescent material, and light blue luminescence and emitting red light are produced by phosphor material.And light blue phosphor material and red phosphorescence material are preferably doped among same material of main part, or navy blue luminescent material and red illuminating material superposition formation OLED luminescent composition.

In large scale full color OLED display of the present invention, in described display module, the type of drive of each display unit can adopt passive type to drive (PM driving) and active driving (AM driving) two kinds, when adopting passive type to drive, the drive circuit of display comprises IC control chip, OLED luminescent device needs to come by dissimilar insulation insulated column is mutually isolated, and forms the pixel light emission independently controlled by pulsed drive; When adopting active driving, the drive circuit of display comprises film crystal tube loop and IC control chip, and film crystal tube loop at least needs and an Electrode connection, lighting or extinguishing with switch form control OLED luminescent device.

Large scale full color OLED display structure of the present invention is not limited only to end ray structure, also can adopt top ray structure simultaneously.

The true color three primary colors principle of luminosity of large scale full color OLED display of the present invention is as follows:

In described large scale full color OLED display, each display unit in display module and color transformed substrate are by being sticked together by the seamless gummed of colloid inserts, therefore the electroluminescence that in display unit, OLED luminescent device sends is after converting rete, Red lightscreening plate rete, green color filter rete and blue color filter rete by the green tint on color transformed substrate, to change, produce different color luminous.

The generation principle of large scale full color OLED display blue-light-emitting is: blue-light-emitting is obtained by blue color filter rete after being mixed by the navy blue electroluminescence in OLED luminescent device and light blue electroluminescence, the electroluminescence of OLED luminescent device is when by blue color filter rete, green luminescent component in its luminescent spectrum and emitting red light component will be stopped by blue color filter rete, not by the direct projection of blue color filter rete in air, therefore only pure blue-light-emitting can be observed from the region (blue pixel area) of the corresponding blue color filter rete on transparency carrier surface.

The generation principle of large scale full color OLED display green emitting is: a part for green emitting is the mixing blue-light-emitting component converted by green tint in rete absorption OLED luminescent device, and convert thereof into as green light photoluminescence, another part of green emitting is directly obtained by the green color component in the electroluminescence of OLED luminescent device, navy blue in OLED luminescent device is luminous, light blue luminescence and emitting red light are when passing through green color filter rete, blue-light-emitting and emitting red light are effectively filtered, only remain green emitting through transparency carrier, therefore only pure green emitting can be observed from the region (green pixel area) of the corresponding green color filter rete on transparency carrier surface, this green emitting is the mixed light of the electroluminescence of OLED luminescent device and the luminescence generated by light of color conversion material conversion.

The generation principle of large scale full color OLED display emitting red light is: because the half-wave of the luminescent spectrum of green tint conversion film material is wide often comparatively wide in range, it not only includes green luminescent component, also can include the emitting red light component of a small amount of wavelength more than 600nm simultaneously.Therefore, if green tint is converted rete to cover Red lightscreening plate film layer simultaneously, the emitting red light forming large scale full color OLED display can summary be, emitting red light had both comprised by the Red electroluminescent in 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 Partial filtration green tint converted in red light photoluminescence and the luminescence of OLED luminescent device that rete produces beyond Red electroluminescent component falls, therefore only pure emitting red light can be observed from the region (red pixel area) of the corresponding Red lightscreening plate rete on transparency carrier surface.

Large scale full color OLED display technology of the present invention, solves existing like product in long-time driving situation, easily occurs the problem that look drifts about, and ensure that no matter display all has excellent visual effect under what circumstances.The seamless process simultaneously achieving display module joins, the display module no matter forming large-size screen monitors has how many, and visually, OLED display is all one integrated mass, there is not shortcoming.Therefore, the present invention is the huge breakthrough in large scale OLED display application field.

It should be noted that, the design feature that large scale full color OLED display of the present invention possesses, does not affect its collocation or combines known display fabrication process technology, such as, in order to improve the contrast of display, polaroid material of fitting further on the surface of display; In order to improve display brightness, in display surface laminating brightness enhancement film etc.; In addition, the Pixel Design forming OLED display can also be become Pentile compound mode, or as required, the size of the pixel of adjustment different color is unequal size, or Pixel Design is become triangle disposition or other structural forms; In addition, if the OLED display that AM drives, its type of drive can be LTPS-TFT, α-TFT or metal oxide TFT etc.In a word, technology disclosed in this invention can be compatible and utilize known display technology to manufacture high performance OLED to show product.

The present invention compared with prior art, advantage is: the OLED luminescent device in display unit contains the multicomponent electroluminescent component of multiple blue coloured electroluminous and Red electroluminescent, color transformed rete is only a kind of colour component, and optionally can only be covered in green color filter film layer as required, or be covered in green and red green glow sheet film layer simultaneously.The performance advantage of such display devices structure may be embodied in following several aspect: (1), because the OLED luminescent device forming OLED active display is the device of simple a kind of structure, therefore avoid from process structure and use precision metallic cover technique of counterpoint, thus greatly reduce the difficulty of vacuum evaporation process when OLED luminescent device makes, simultaneously because color transformed Material selec-tion is single a kind of material, simplify manufacture difficulty and the process number of color transformed substrate, be conducive to the yields improving large scale full color OLED display.(2), the multiple component that blue light emitting in OLED luminescent device is made up of navy blue electroluminescence and light blue electroluminescence blue coloured electroluminous, add the light quantity subnumber of the blue-light-emitting of large scale full color OLED display, thus improve the efficiency of blue emitting pixel, be conducive to obtaining high color purity, long-life blue-light-emitting, make up and evaded the relative performance inferior position fallen behind of blue light material in current various color luminescent material, and then balance the luminous efficiency of full-color display different pixels, colorimetric purity, the important indicators such as life-span, positive effect is had to the performance improving whole large scale full color OLED display.(3) green emitting, in OLED luminescent device and blue-light-emitting all come from blue coloured electroluminous earth complex luminescent component dissimilar in OLED luminescent device, in order to effectively adjust the light intensity of OLED display different pixels, reach the portrait expression effect of high-quality, only need the light intensity ratio by regulating wherein one group of blue light component and red component in OLED luminescent device, the object regulating different pixels luminous intensity can be reached, means are simple, are easy to operation.(4), in display module, the seam crossing of multiple display unit can ingeniously be hidden in after the black matrix" grid rete of the color transformed substrate of monoblock, visually eliminate the vestige of splicing, realize the seamless spliced of real meaning, make the picture of display module reach the effect of one integrated mass.(5), present invention achieves modularization assembling form, the display unit forming display module can be designed to the standard specification of different size as required, when some display units occur bad, also maintenance can be replaced easily, prevent because the problem of a certain display unit causes whole display fault, be easy to the rate of good quality rate and the cost degradation that realize display.

Accompanying drawing explanation

Fig. 1 is the large scale OLED displayer structure schematic diagram of traditional connecting method.

Fig. 2 is the first structural representation of large scale full color OLED display of the present invention.

Fig. 3 is large scale full color OLED display the second structural representation of the present invention.

Fig. 4 is the structural representation of the OLED luminescent device of single device architecture.

The OLED luminescent device spectrum that the large scale full color OLED display that Fig. 5 is the embodiment of the present invention 1 uses forms schematic diagram.

The large scale full color OLED display that Fig. 6 is the embodiment of the present invention 1 is used RGB filter coating material transmitance schematic diagram.

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-colloid inserts, 9-transparent substrates, 10-OLED luminescent device, 10a-transparency conductive electrode layer, 10b-organic luminescence function film layer combines, 10c-reflection electrode layer, 11-control loop, 12-Blue OLED luminescent device, the green OLED luminescent device of 13-, the red OLED luminescent device of 14-.

Embodiment

Below in conjunction with concrete drawings and Examples, the invention will be further described.

Embodiment 1

Shown in Fig. 2 is the first structure of large scale full color OLED display of the present invention, it display module comprising one piece of complete color transformed substrate and be made up of multiple display unit, described color transformed substrate comprises transparency carrier 1, a surface of transparency carrier 1 is coated with Red lightscreening plate rete 5, green color filter rete 4 and blue color filter rete 2, between the filter rete of described various color, is provided with black matrix" grid rete 3, its innovative point is: be coated with the green tint conversion rete 6 be made up of same green tint coversion material on described green color filter rete 4, Red lightscreening plate rete 5 and the black matrix" grid rete 3 between them comprehensively, described display module is spliced by multiple display unit and forms, each display unit comprises a transparent substrates 9, multiple OLED luminescent device 10 and for driving the control loop 11 of described multiple OLED luminescent device 10 luminescence, described transparent substrates 9 is by the Red lightscreening plate rete 5 of colloid inserts 8 seamless adhesion on color transformed substrate, green color filter rete 4, blue color filter rete 2, black matrix" grid rete 3 and green tint convert on rete 6, each OLED luminescent device 10 in described display unit all has the filter rete on a color transformed substrate corresponding separately with it, described OLED luminescent device 10 can send in energising situation comprise luminous, the CIE chromaticity coordinates Y value of navy blue that CIE chromaticity coordinates Y value is less than 0.25 be greater than 0.25 and be less than 0.55 light blue earth complex luminescent component and CIE chromaticity coordinates X value be greater than the three components electroluminescence (Fig. 4 is shown) of the emitting red light component of 0.64.Due to the transparent substrates 9 in described display unit with between color transformed substrate by together with colloid inserts 8 seamless adhesion, can guarantee that the luminescence of OLED luminescent device 10 comprehensively impartially can enter color transformed substrate like this, and then be dissipated among air.

In the diagram, navy blue earth complex luminescent component and light blue earth complex luminescent component mixing superposition, larger blue coloured electroluminous of common composition intensity.On this basis, abundant Red electroluminescent is also included in OLED luminescent device 10 earth complex luminescent component.Comparatively speaking in OLED luminescent device 10 electroluminescent components, green luminescent component content is less, intensity is relatively weak, so add a green tint conversion rete 6, green tint conversion rete 6 can absorb the mixing blue-light-emitting component in OLED luminescent device 10, and converts thereof into as green light photoluminescence.

In embodiment 1, the material of described transparency carrier 1 and transparent substrates 9 can adopt existing conventional material to be formed, as glass or polymeric material, wherein polymeric material can select cellulose esters, polyamide, Merlon, polyester, polystyrene, polyolefin, polysulfones, polyether sulfone, polyether-ketone, Polyetherimide, polyoxyethylene, norbornene resin etc.When a polymer material, transparency carrier 1 and transparent substrates 9 can be rigidity or flexibility.

In the present invention, the visible light transmittance rate of described transparency carrier 1 and transparent substrates 9 is at least more than 80%, is preferably at least more than 86% level.

Be covered in material and manufacture craft that the material of the Red lightscreening plate rete 5 on transparency carrier 1, green color filter rete 4, blue color filter rete 2 and black matrix" grid rete 3 and manufacture craft can refer to the filter rete used in conventional liquid crystal, determined pigment is normally dispersed in photoresist and forms by this kind of material, the material of different qualities filter membranous layer normally adopts conventional photolithographicallpatterned to be made, and concrete core process comprises the contents such as film, exposure, development, solidification.Except photolithographicallpatterned, black matrix" grid rete 3 and rgb pixels filter rete can also use the techniques such as printing, letterpress, offset printing and Nezzle printing to make.

The green tint conversion rete 6 being covered in green or red and green color filter film layer can be scattered in transparent material by fluorchrome and form, or be directly made up of independent a kind of Fluorescent dye material, or the Subjective and Objective mixed form be doped among system body material by green luminescent material is formed.

In the present invention, the material of described green tint conversion rete 6 is preferably made up of photoresist and Fluorescent dye material mixing, traditional lithography process technique is adopted to make, Fluorescent dye material in described green tint conversion rete 6 is selected from the mixture of one or more had in the organic fluorescent material of following formula, and described general formula is:

R1, R2, R3, R4 in general formula 2 represent with the aromatic functional group on C-C key or C-N Lian Jie Yu perylene group;

R1, R2, R3, R4 in general formula 3 represent with the aromatic functional group on C-C key or C-N Lian Jie Yu perylene group.

Fluorescent dye material in described green tint conversion rete 6 adopts traditional organic fluorescence materials or inorganic fluorescent material etc.The basic demand of this type of material has strong absorption to below 500nm blue light, the green fluorescence of crest between 500nm to 550nm can be sent simultaneously, the material that can use as green tint coversion material also requires to possess stronger fluorescence quantum efficiency, this type of material 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 (bend inolidine) (9, 9a, 1-gh) cumarin (coumarin 1 53), (2) basic yellow 51, it is the dyestuff in coumarine dye family, (3) naphthalimide dye, such as solvent yellow 11 and solvent yellow 116 etc., in addition, this type of material also can adopt Japanese patent application P2005-34904, P2004-34964, compound etc. described in flat 10-273972 patent.

Green tint conversion rete 6 can use to be made with aforementioned black matrix" grid rete 3, Red lightscreening plate rete 5, film photoetching processing technology that green color filter rete 4 is identical with blue color filter rete 2, or makes according to the thin film-forming method such as the printing of feature choice for use, letterpress, vacuum evaporation of material.

As required, the planarization rete 7 of certain thickness can be set between OLED luminescent device 10 of the present invention and color transformed rete.This planarization rete 7 is covered on each filter rete and green tint conversion rete 6 comprehensively, for covering the defect on above-mentioned various difference in functionality rete, the short circuit of the OLED display preventing and eliminate these defects to cause.Planarization rete 7 can adopt monolayer material structure, or is made up of with stepped construction multiple material.Material for the formation of planarization rete 7 comprises imide-modified organic siliconresin; Inorganic metal compound (such as TiO, Al ₂o ₃, SiO ₂); The material of the dispersion formed in acrylic resin, polyimide resin, organic siliconresin etc.; Acrylate monomer containing active ethylene group/oligomer/polymer resin; Photoresist resin; Fluorine resin; Photo curable resin and/or thermosetting resin, such as epoxy resin, epoxide modified acrylic resin etc.The method of processing these materials formation planarization rete 7 is not particularly limited, by conventional method, as dry method (such as sputtering, vapour deposition, CVD etc.) and wet method (spin coating, roller coat, cast, photoetching etc.) carry out this operation.

When planarization rete 7 is between color conversion layer and the electrode of OLED, on the planarization rete 7 of OLED luminescent device 10 of the present invention, protective layer can be set further as required.This protective layer can anti-block, lower-molecular-weight component and moisture ooze out effectively from planarization rete 7 below, green tint conversion rete 6 and filter rete, affects the illumination effect of OLED luminescent device 10.The material that can use as protective layer can adopt: (1) metal oxide, such as SiO _x, AlO _x, TiO _x, TaO, ZnO _xdeng; (2) metal nitride, such as SiN _xdeng; (3) metal oxynitride compound, such as SiN _xo _ydeng; (4) organic/inorganic multilayer film mixed structure.

As shown in Figure 2, Figure 4 shows, in described large scale full color OLED display, described OLED luminescent device 10 comprises the first electrode, an organic luminescence function film layer combination 10b and the second electrode, organic luminescence function film layer combination 10b is arranged between the first electrode and the second electrode, described first electrode and the second electrode can be reflection electrode layer 10c or transparency conductive electrode layer 10a, and described organic luminescence function film layer combination 10b at least comprises luminescent layer.

Described OLED luminescent device 10 is the single device architectures only including an organic luminescence function film layer combination 10b, and the luminescent layer in described organic luminescence function film layer combination 10b can send navy blue luminescence, light blue luminescence and emitting red light under electric field action simultaneously.This luminescent layer can be single light-emitting layer, and also can be the sandwich construction be mutually superimposed by different color luminescent layer, different color luminescent layer produces different color light, and mixing forms multicomponent electroluminescence; The structure of described luminescent layer can list following multiple structure:

(2) navy blue and red light emitting layer/light blue luminescent layer;

(3) light blue and red light emitting layer/navy blue luminescent layer;

(4) navy blue and light blue luminescent layer/red light emitting layer;

In described OLED luminescent device 10, the luminescent layer of variant color is formed in material of main part by the guest emitting material mixing and doping of corresponding color, with regard to guest emitting material, can list fluorescence class material and the large class of phosphor material two.Contrast fluorescence luminescent material, phosphorescent light-emitting materials can utilize singlet and triplet excitons in luminescence process simultaneously, and internal quantum efficiency can reach 100% in theory, thus greatly can improve the luminous efficiency of luminescent device.

In above-mentioned OLED luminescent device 10, the material of main part forming the luminescent layer of above-mentioned OLED luminescent device 10 not only needs to possess ambipolar charge transmission, need to possess appropriate energy rank simultaneously, the excitation energy produced effectively can be delivered to guest emitting material because of electronics and hole-recombination.Such material comprises Distyrylarylene 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 10, described guest emitting material can be simple fluorescent material, phosphor material or be formed by different fluorescent materials and phosphor material matched combined, a kind of material is had at least to be organic phosphorescent material containing iridium, nail, platinum, rhenium and palladium metal in guest emitting material, preferably, navy blue luminescence is produced by fluorescent material, and light blue luminescence and emitting red light are produced by phosphor material.

In above-mentioned OLED luminescent device 10, as the blue-fluorescence guest materials for generation of blue-light-emitting, not only need to possess high fluorescent quantum luminous efficiency, also need to possess appropriate energy rank simultaneously, effectively can absorb material of main part excitation energy luminous, such material, is not particularly limited.Such as, talan amine derivant, pyrene derivatives, derivative in the wrong, anthracene derivant, benzoxazole derivative, benzothiazole derivant, benzimidizole derivatives can be listed, bend derivative, phenanthroline derivative, diphenylethyllene benzene derivative, tetraphenylbutadiene derivative etc.; Wherein can use 4,4 '-bis-(2-(9-ethyl carbazole-2-base)-vinyl) biphenyl (BCzVBi), perylene etc.Also can list quaterphenyl based compound, two phenyl based compound, benzene imidazole compound, benzoxazole based compound, Ben Bing oxadiazole based compound, styryl benzene compound, distyrene pyrazine based compound, butadiene-based compound, naphthalimide compounds, perillene based compound, aldazine based compound, cyclopentadiene based compound, pyrrolopyrrole formyl based compound, styryl amine compound, coumarin series compounds, aromatic series dimethylbenzene theophylline based compound, using the metal complex of 8-quinolinol system material as part, separately one or more the combination such as polyphenyl based compound, in these compound-materials, the concrete enforcement material that checking can list have aromatic series dimethylbenzene theophylline based compound, 4,4 '-bis-(2,2-bis--1-butyl phenyl vinyl) two phenyl (abbreviation: DTBPBBi), DPVBi) etc. 4,4 '-bis-(2,2-diphenylacetylene) two phenyl (is called for short: with their derivative.

Except fluorescent material, phosphor material can also be used to be applied in OLED luminescent device 10 structure of the present invention, the material requirements that can use as phosphorescent light body material possesses higher triplet state energy rank, appropriate HOMO/LUMO energy rank and ambipolar conduction, this type of material can list carbazoles derivative, compound in triazine class etc.

As blue phosphorescent guest materials, as long as have the material of blue phosphorescent lighting function, be not particularly limited.Such as can select the metal complex of iridium, nail, platinum, rhenium, palladium etc., preferably, select in the ligand of above-mentioned metal complex that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton.More particularly, two (4 can be selected, 6-difluorophenyl pyridinato-N, C2 ')-picoline iridium, three (2-(2,4-difluorophenyl) pyridine-N, C2 ') iridium, two (2-(3,5-trifluoromethyl) pyridine-N, C2 ')-picoline iridium, two (4,6-difluorophenyl pyridinato-N, C2 ') acetylacetone,2,4-pentanedione iridium etc.

In addition, the Subjective and Objective material producing blue-light-emitting in the above-mentioned OLED of can be used for luminescent device 10 also can adopt compound disclosed in following patent or 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 10, as the material of main part for generation of emitting red light, not only need to possess ambipolar charge transmission, need to possess appropriate energy rank simultaneously, the excitation energy produced effectively can be delivered to guest emitting material because of electronics and hole-recombination.Such material can list such as Distyrylarylene 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 10, as the fluorescent guest material for generation of emitting red light, not only need to possess high fluorescent quantum luminous efficiency, also need to possess appropriate energy rank simultaneously, effectively can absorb material of main part excitation energy luminous, such material can list europium complex, 1-benzopyran derivatives, Rhodamine Derivatives, benzothioxanthene derivative, derivatives of porphyrin, oil red (oil red), 2-(1, 1-dimethyl ethyl)-6-(2-(2, 3, 6, 7-tetrahydrochysene-1, 1, 7, 7-tetramethyl-1H, 5H-benzo (ij) quinoline-9-base) vinyl)-4H-pyrans-4H-subunit) malononitrile (DCJTB), 4-(dicyano methylene) the p-dimethylaminostyryl of-2-methyl-6-()-4H-pyrans (DCM) etc.

Relative to material of main part, the amount (incorporation) of fluorescent guest material is preferably 0.01% ~ 20%(weight), be more preferably 0.1% ~ 10%(weight).When using blue-fluorescence guest materials, relative to material of main part, the amount of blue-fluorescence guest materials is preferably 0.1% ~ 20%(weight).Only within the scope of this, can make to produce effective energy distribution between high-octane blue light-emitting substances and low-energy red light emitting substance gentle, the blue and emitting red light of possessing that can obtain expecting balances each other the electroluminescence of intensity.

As red phosphorescent guest materials, as long as have the material of red phosphorescent lighting function, be not particularly limited.Such as can enumerate the metal complex of iridium, nail, platinum, rhenium, palladium etc., preferably, select in the ligand of above-mentioned metal complex that at least one has the complex of phenylpyridine skeleton, two pyridine skeleton, porphyrin skeleton etc.More particularly, two (2-(2 '-benzo (4,5-α) thienyl) pyridine-N can be selected, 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 can be used for luminescent device 10 also can adopt compound disclosed in following patent or 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.

According to optional principle, in this OLED luminescent device 10, also hole injection layer, hole transmission layer, electron transfer layer and/or electron injecting layer can be set.

In this OLED luminescent device 10, the material of above-mentioned each layer can adopt the known spendable all material of making OLED luminescent device 10 or be expected to the material that develops future.Any processing method known in association area can be used as vacuum evaporation, and the methods such as vapour deposition make OLED luminescent device 10.

In above-mentioned OLED luminescent device 10, the material being used for making transparency conductive electrode layer 10a comprises: ITO, aluminium oxide, indium oxide, IZO, zinc oxide, zinc-aluminum oxide, zinc-gallium oxide, or the transparent conductive metal oxide that with the addition of the dopant of F or Sb and so in above-mentioned oxide is formed.Described transparency conductive electrode layer 10a makes by vapour deposition, sputtering or chemical vapor deposition (CVD) mode, makes preferably by sputtering mode.

In above-mentioned OLED luminescent device 10, be used for make hole injection layer, hole transmission layer material can select arbitrarily Available Material commonly known in the art.Specifically phthalocyanine derivates can be listed, triazole derivative, triarylmethane derivatives, triarylamine derivatives, oxazole derivative, oxadiazole derivative, hydazone derivative, stilbene derivatives, pyridinoline derivative, polysilane derivative, imdazole derivatives, phenylenediamine derivative, amino replacement Kui Er ketone derivatives, styrylanthracene derivatives, the distyryl compounds such as styryl amine derivative, Cong derivative, silazane derivatives, phenyl amines copolymer, porphyrin compound, carbazole derivates, polyaryl alkane derivatives, polyphenylene ethylene and derivative thereof, polythiophene and derivative thereof, poly-N-vinyl carbazole derivates, the electroconductive polymer oligomers such as thiophene oligomers, aromatic uncle amine compound, styrylamine compound, three amines, tetraamine, diphenyl amine, propine diamine derivative, p-phenylene diamine derivative, m-phenylenediamine derivatives, 1,1 '-bis-(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, 2 times of bodies of triphenylamine can be listed, 3 times of bodies, 4 times of bodies and 5 times of bodies, 4, 4 '-bis-(N-phenyl-N-(4 "-aminomethyl phenyl) amino) biphenyl, 4, 4 '-bis-(N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 4, 4 '-bis-(N-phenyl-N-(3 "-methoxyphenyl) amino) biphenyl, N, N '-diphenyl-N, N '-bis-(1-naphthyl) (1, 1 '-biphenyl)-4, 4 '-diamines (NPB), 4, 4 '-bis-(N-(4 '-(N "-(1-naphthyl)-N "-phenyl amino) xenyl)-N-phenyl amino) biphenyl (NTPA), 3, 3 '-dimethyl-4, 4 '-bis-(N-phenyl-N-(3 "-aminomethyl phenyl) amino) biphenyl, 1, two (4 '-(the N of 1-, N-bis-(4 "-aminomethyl phenyl) amino) phenyl) cyclohexane, 9, 10-pair (N-(4 '-aminomethyl phenyl)-N-(4 "-n-butylphenyl) amino) luxuriant and rich with fragrance, 3, two (the N of 8-, N-diphenyl amino)-6-phenylphenanthridineand, 4-methyl-N, N-pair (4 ", 4 " '-bis-(N ', N "-two (4-aminomethyl phenyl) amino) biphenyl-4-base) aniline, N, N '-bis-(4-(diphenyl amino) phenyl)-N, N '-diphenyl-1, 3-diaminobenzene, 5, 5 "-bis-(4-(two (4-aminomethyl phenyl) is amino) phenyl)-2, 2 ': 5 ', 2 '-many thiophene, 1, 3, 5-tri-(triphenylamino) originally, 4, 4 ', 4 "-three (N-carbazole) triphenylamine, 4, 4 ', 4 "-three (N-(3 ' "-aminomethyl phenyl)-N-phenyl amino) triphenylamine, 4, 4 ', 4 "-three (N, N-pair (4 ' "-tert-butyl-phenyl-4 " "-Ji) amino) triphenylamine, 1, 3, 5-tri-(N-(4 '-diphenylaminophenyl)-N-phenyl amino) benzene etc.Described porphyrin compound, can list 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-tetra-(pentafluorophenyl group)-21H, 23H-porphyrin; As phthalocyanine derivates, 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. can be enumerated.Described aromatic uncle amine compound and styrylamine compound, can enumerate as N, N, N ', N '-tetraphenyl-4,4 '-diaminobenzene, N, N '-diphenyl-N, N '-bis--(3-aminomethyl phenyl)-(1,1 '-xenyl)-4,4 '-diamines, 2,2-two (4-bis--to triamido phenyl) propane, 1,1-two (4-bis--to triamido phenyl) cyclohexane, N, N, N ', N '-four p-methylphenyl-4-4 '-diaminobenzene, 1,1-two (4-bis--to triamido phenyl)-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 '-bis-(diphenyl amino) quaterphenyl, N, N, N-tri-(p-tolyl) amine, 4-(bis--p-methylphenyl is amino)-4 '-(4(bis--p-methylphenyl is amino) styryl) equal benzene divinyl, 4-N, N-diphenyl amino-2-diphenylacetylene benzene, 3-methoxyl group-4 ' the equal benzene divinyl of-N, N-diphenyl amino, N-phenyl carbazole etc.Wherein, preferred aryl groups-two (4-ammonia diaryl base phenyl) amine, p-phenylene diamine derivative, 4,4 '-diaminobiphenyl 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, 4,4 '-diaminourea equal benzene divinyl derivative, 1,1-diaryl cyclohexanes class, 4,4 " the many phenyl derivatives of-diaminourea, 5,10-bis--(4-aminophenyl) anthracene derivant, 2,5-diaryl pyridines, 2,5-diaryl furans, 2,5-diaryl thiophene-based, 2,5-diaryl pyrrole class, 2,5-diaryl-1,3,4-oxadiazole class, 4-(ammonia diaryl base) equal benzene divinyl class, 4,4 '-two (ammonia diaryl base) be benzene divinyl class-N all, N-diaryl-4-(2,2-diphenylacetylene) phenyl amines, 2,5-diaryl-1,3,4-triazole type, Isosorbide-5-Nitrae-two (4-aminophenyl) naphthalene derivatives, two (the ammonia diaryl base)-5-thioxanthene class of 2,8-, 1,3-bis-(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 10, improve the performance of OLED luminescent device 10, common way is in the hole injection layer of OLED luminescent device 10, add electron acceptor (P type dopant material), improves carrier conductivity.The P type dopant material that can be used as P type doping use comprises: (1) organic material, as fluoro-in 2,3,5,6-47,7 ', 8,8 '-four cyanogen dimethyl-parabenzoquinone (F4-TCNQ); (2) inorganic material, as MoO ₃, V ₂o ₅, ReO ₃, Re ₂o ₇, FeCl ₃and WO ₃deng.

In above-mentioned OLED luminescent device 10, be used for make electron injecting layer material can in the material possessing electron transport property OLED any choice for use.Such material can list as 1, two (5 '-(to the tert-butyl-phenyl)-1 of 3-, 3, 4-oxadiazole-2 '-Ji) benzene, 2-(4-xenyl)-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, diphenylquinone derivatives, nitro replaces Cong ketone derivatives, thiopyrandioxide derivatives, anthraquinone bismethane derivative, thiopyrandioxide derivatives, the heterocyclic tetraacid acid anhydrides such as Nai Ji perylene, carbodiimides, Cong pitches methane Derivatives, anthraquinone bismethane derivative, anthracyclinone derivatives, distyrylpyrazine derivatives, Silole derivative, phenanthroline derivative, imidazopyridine derivatives etc.In addition, two (10-benzo (h) oxyquinoline) beryllium can also be enumerated, the beryllium salt of 5-hydroxyl brass, the organometallic complexs such as the aluminium salt of 5-hydroxyl brass, the metal complex of oxine or derivatives thereof, 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 compounds containing chelating agent of the hydroxyquinoline metal complexs such as plant hormone (being generally speaking oxine) such as three (2-methyl-oxine) aluminium etc.In addition, the central metal can also enumerating these metal complexs is replaced by the metal complex etc. of beryllium, indium, magnesium, copper, calcium, tin, zinc or aluminium.Preferred use is without metal or metal phthalocyanine, or their end is replaced into the material of alkyl, sulfo group etc.Wherein, more preferably 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 3-phenyl-4-(1 '-naphthalene is used)-5-phenyl-1,2,4-triazole (TAZ).

Some inorganic metal compound material also as the materials'use of OLED luminescent device 10 electron injecting layer, electron transfer layer, can include, for example out LiF, CsF, Cs ₂cO ₃, LiN, Cs ₃the materials such as N.

Low voltage drive effect is obtained in order to make OLED luminescent device 10, the structural form that the electron injecting layer of OLED luminescent device 10, electron transfer layer adopt N-type to adulterate 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 above-mentioned OLED luminescent device 10, the material being used for making reflection electrode layer 10c 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 (such as NiP, NiB, CrP, CrB) or microcrystallizing alloy (such as NiAl), reflecting electrode is by dry method as vacuum evaporation, and vapour deposition or sputtering are formed.The reflectivity of described reflecting electrode is preferably at least 50%, is more preferably at least 80%.

In addition, OLED luminescent device 10 in full color OLED display structure of the present invention can also be the laminated construction including two or more organic luminescence function film layer combination 10b, is isolated between adjacent organic luminescence function film layer combination 10b by charge generating layer.For lamination OLED luminescent device 10, its feature is, is easy to the long-life and the high efficiency that realize OLED luminescent device 10.

The key that lamination OLED luminescent device 10 makes is the selection of charge generating layer, and can be selected from the mixture of one or more in following structural 1 material, structural formula 2 material as the material of charge generating layer materials'use, described structural formula is:

Also can choice for use P type, the n type material doping electronics of device or hole material form.As the lamination OLED luminescent device 10 of the charge generating layer that P type and N-type doped forms are formed, its manufacture craft can see the doping of hole injection layer and electron injecting layer in aforementioned OLED manufacture craft and low-voltage technology mode.

Embodiment 2

Shown in Fig. 3 is large scale full color OLED display the second structural form of the present invention, itself and the institute of the structural form shown in Fig. 2 difference are, green tint conversion rete 6 does not have continuous print to be covered on Red lightscreening plate rete 5, green color filter rete 4 and the black matrix" grid rete 3 between them, but only cover on green color filter rete 4, this formation feature is only that the selectivity of color change rete processes is different, and the performance for large scale full color OLED display does not form impact.

Manufacture embodiment 1

Manufacturing step operation:

One, the making of color transformed substrate:

(1) form of consigned processing is adopted, the filter coating glass including black matrix" grid rete 3, Red lightscreening plate rete 5, green color filter rete 4 and blue color filter rete 2 is obtained from China Projection Tube Co., Ltd (general headquarters are in Taiwan), its specification is 2.4 cun of QVGA specifications, wherein the thickness of Red lightscreening plate rete 5 is 3 microns, the thickness of green color filter rete 4 is 3 microns, the thickness of blue color filter rete 2 is 6 microns, and the transmitance of above-mentioned different color filter rete as shown in Figure 6.

(2) according to structure shown in Fig. 2, continue to make green tint conversion rete 6 at above-mentioned filter coating glass.In this manufacture embodiment 1, green tint conversion rete 6 is photoresist forms, is specifically distributed in transparent photomask glue by green tint coversion material, is processed by traditional photoetching process.This manufacture embodiment 1 Other substrate materials used is the model that Japanese JSR Corp. produces is the transparent photomask glue of NN810.

Green tint coversion material is organic fluorescence pigment, and its structural formula is:

Above-mentioned green tint coversion material is distributed in photoresist according to the concentrations by weight (after solidification solid weight specific concentration) of 10%, its photoetching process comprises the operations such as gluing, front heating, exposure, cleaning, rear heating, after completing photoetching process, process the green tint conversion rete 6 that thickness is 4 microns.

(3) after completing the making of green tint conversion rete 6, adopt same lithography process technique, to smear on the surface and the thickness that completes is planarization rete 7 material of 2 microns, the transparent photomask glue material that the model that the material that planarization rete 7 uses is produced for Japanese JSR Corp. is NN810L at green tint conversion rete 6 further.

(4) after completing the making of above-mentioned planarization rete 7, on planarization rete 7, CVD thin film-forming method is passed through further, the SiN protective layer material of 500 nano thickness that completed.

Two, the making of display unit:

(5) at thickness be 0.7mm transparent substrates 9 on (plate glass), made the ITO transparency conductive electrode layer 10a of 220nm thickness by sputtering mode, its membrane impedance is 9 ohm/.Subsequently pattern picture processes is carried out to ITO transparency conductive electrode layer 10a, and on the ITO pattern machined, make the first electrode isolation post (ITO electrode insulated column) and the second electrode isolation post (aluminium electrode isolation post), wherein the first electrode isolation post is trapezium structure, and the second electrode isolation post is inverted trapezoidal structure.The pattern picture of all ITO and the processing method of cloudy first electrode isolation post have employed the photoetching process that traditional liquid crystal panel makes equally.The model that the Other substrate materials that first electrode isolation post and the second electrode isolation post adopt is the production of Japanese zeon Co., Ltd. is the Other substrate materials of ZPN1168.

(6), after completing electrode isolation column production, OLED luminescent device 10 Making programme is entered.

The transparent substrates 9 making ITO transparency conductive electrode layer 10a needs to carry out pre-treatment, and pre-treating technology is: 10 ^-3under below pa vacuum condition, heat 30 minutes at 200 DEG C, at 200 DEG C, UV cleans 3 minutes.

In this manufacture embodiment 1, described OLED luminescent device 10 is laminated construction mode, use material and concrete structure as follows:

Transparency conductive electrode layer 10a(thickness: 220nm; Material: ITO)/hole injection layer (thickness: 40nm; Material: structural formula 4 material)/hole transmission layer (thickness: 20nm; Material: structural formula 5 material)/navy blue luminescent layer (thickness: 30nm; Material: structural formula 6 material is doped in structural formula 7 material by 3% weight ratio and forms)/electron transfer layer (thickness: 20nm; Material: structural formula 8 material)/electron injecting layer (thickness: 2nm; Material: Li ₃n)/charge generating layer (thickness: 10nm; Material: structural formula 1 material)/hole transmission layer (thickness: 20nm; Material: structural formula 5 material)/light blue and red light emitting layer (thickness: 30nm; Material: structural formula 9 material, structural formula 10 materials and structures formula 11 material are formed according to the weight proportion blending of 12:1:87)/electron transfer layer (thickness: 25nm; Material: structural formula 8 material)/electron injecting layer (thickness: 0.5nm; Material: LiF)/reflection electrode layer 10c(thickness: 100nm; Material: Al).

The characterization result of OLED luminescent device 10 under 1000 candela brightness of this manufacture embodiment 1 is as shown in table 1.

(7), after making OLED luminescent device 10, the control loop 11 for driving the luminescence of described multiple OLED luminescent device 10 loaded onto again in the usual way by each display unit, then connected in the usual way by the control loop 11 in multiple display unit.Large scale full color OLED display each pixel characteristic test result of this manufacture embodiment 1 is as shown in table 2.

Manufacture embodiment 2

The difference of this manufacture embodiment 2 and manufacture embodiment 1 is OLED luminescent device 10 structure and material.This manufacture embodiment 2 use material and concrete structure as follows:

Transparency conductive electrode layer 10a(thickness: 220nm; Material: ITO)/hole injection layer (thickness: 40nm; Material: structural formula 4 material)/hole transmission layer (thickness: 20nm; Material: structural formula 5 material)/navy blue luminescent layer (thickness: 5nm; Material: structural formula 12 material is doped in structural formula 13 material by 3% weight ratio and forms)/intermediate layer (thickness: 3.5nm; Material: structural formula 8 material)/red light emitting layer (thickness: 10nm; Material: structural formula 14 material is doped in structural formula 8 material by 10% weight ratio and forms)/electron transfer layer (thickness: 20nm; Material: structural formula 8 material)/electron injecting layer (thickness: 2nm; Material: Li ₃n)/charge generating layer (thickness: 10nm; Material: structural formula 1 material)/hole transmission layer (thickness: 20nm; Material: structural formula 5 material)/light blue and red light emitting layer (thickness: 30nm; Material: structural formula 9 material, structural formula 10 materials and structures formula 11 material are formed according to the weight proportion blending of 12:0.8:87.2)/electron transfer layer (thickness: 25nm; Material: structural formula 8 material)/electron injecting layer (thickness: 0.5nm; Material: LiF)/reflection electrode layer 10c(thickness: 100nm; Material: Al).

Pure blue fluorescence emission spectra is comprised in the OLED luminescent device 10 made in this manufacture embodiment 2, light blue phosphorescence luminescent spectrum, also include the earth complex luminescent component that two groups come from different red phosphorescent light-emitting materials, wherein in red light emitting layer, red phosphorescent luminescence partly overlaps with the emitting red light in light blue and red light emitting layer, is only to have occurred a luminous shoulder in the place of 618nm.

Table 1

Comparative example

Comparative example and above-mentioned manufacture embodiment 1 and 2 difference are, in full color OLED luminescent device 10 structure of comparative example, do not make green tint conversion rete 6, in addition, the thickness of Red lightscreening plate rete 5, green color filter rete 4 and blue color filter rete 2 is 6 microns.

In comparative example, each pixel characteristic test result of full color OLED display is see table 2.

Table 2

* 1: white field refers to the magnitude of current of adjustment display different driving pixel, until reach the setting under a certain standard white light.

2: display original intensity 500cd/cm ²under driving effect.

As can be seen from Table 1 and Table 2, the navy blue earth complex luminescent component and the light blue earth complex luminescent component that manufacture the large scale full color OLED luminescent device 10 made in embodiment 1 and manufacture embodiment 2 superpose mutually, emphasize and improve the blue-light-emitting of OLED luminescent device 10, the component that the green emitting in OLED luminescent device 10 Integral luminous spectrum presents is relatively weak.From the pixel characterization data of the full color OLED display manufactured made by embodiment 1 and 2, red, green, blue emitting pixel has all embodied high performance, and be particularly appreciated that OLED display is after long-time driving, the performance of its chromaticity coordinates is stable.

And in described comparative example, green tint is not used to convert rete 6, but directly have employed the design that OLED luminescent device 10 superposes filter rete, as can be seen from its test result, the green emitting pixel of large scale OLED display is that colorimetric purity or efficiency are all very low, OLED display is in long-time driving situation simultaneously, creates serious color drift, and display blueness is relative with red component to be improved.

Large scale full color OLED display manufacturing technology of the present invention inherits in traditional large scale full color OLED display manufacture craft, does not use the process characteristic of metal mask, and this is conducive to manufacturing fine display, and is conducive to improving product yields.Meanwhile, display fabrication process of the present invention decreases color transformed rete manufacturing process number of times in color transformed substrate manufacturing process process, simplifies color transformed substrate manufacturing process, and this has positive effect for the production efficiency improving color transformed substrate.In addition because green tint conversion rete 6 optionally arranged by color transformed substrate of the present invention, such technique not only has positive role to the color transformed substrate surface evenness of raising, reduce color transformed rete difficulty of processing simultaneously, be conducive to improving full color OLED display yields, and be conducive to the production efficiency improving large scale OLED display.

In sum, present invention process manufacture large scale full color OLED display is adopted to have simplified manufacturing technique, improve the resultant effect of the aspects such as product yields.Relatively simple production Technology can be utilized, produce cost performance high have the good red-green-blue degree of balance and the large scale full color OLED display of efficiency.

Claims

1. large scale full color OLED display, comprise one piece of complete color transformed substrate and display module, described color transformed substrate comprises transparency carrier (1), a surface of transparency carrier (1) is coated with Red lightscreening plate rete (5), green color filter rete (4) and blue color filter rete (2), between the filter rete of described various color, is provided with black matrix" grid rete (3); It is characterized in that:

Green tint conversion rete (6) is coated with on described green color filter rete (4), described display module is spliced by multiple display unit and forms, each display unit comprises a transparent substrates (9), multiple OLED luminescent device (10) and for driving the control loop (11) that described multiple OLED luminescent device (10) is luminous, described transparent substrates (9) is by the Red lightscreening plate rete (5) of colloid inserts (8) seamless adhesion on color transformed substrate, green color filter rete (4), blue color filter rete (2), black matrix" grid rete (3) and green tint convert on rete (6), each OLED luminescent device (10) in described display unit all has the filter rete on a color transformed substrate corresponding separately with it, described OLED luminescent device (10) can produce electroluminescence in energising situation,

The electroluminescent luminescent spectrum of described OLED luminescent device (10) comprise navy blue earth complex luminescent component, CIE chromaticity coordinates Y value that CIE chromaticity coordinates Y value is less than 0.25 be greater than 0.25 and be less than the light blue earth complex luminescent component of 0.55, the second emitting red light component that the first emitting red light component, CIE chromaticity coordinates X value that CIE chromaticity coordinates X value is greater than 0.64 are greater than 0.64.

2. large scale full color OLED display as claimed in claim 1, is characterized in that: be coated with green tint conversion rete (6) be made up of same green tint coversion material on described green color filter rete (4) and Red lightscreening plate rete (5).

3. large scale full color OLED display as claimed in claim 1, is characterized in that: be coated with green tint conversion rete (6) be made up of same green tint coversion material on described green color filter rete (4), Red lightscreening plate rete (5) and the black matrix" grid rete (3) between them comprehensively.

4. large scale full color OLED display as claimed in claim 1, it is characterized in that: described OLED luminescent device (10) comprises the first electrode, the combination of at least one organic luminescence function film layer (10b) and the second electrode, described at least one organic luminescence function film layer combination (10b) is arranged between the first electrode and the second electrode, described first electrode and the second electrode can be reflection electrode layer (10c) or transparency conductive electrode layer (10a), at least comprise a luminescent layer in described organic luminescence function film layer combination (10b);

Described organic luminescence function film layer combination (10b) has two, the electroluminescent luminescent spectrum of described OLED luminescent device (10) comprises navy blue earth complex luminescent component, light blue earth complex luminescent component, the first emitting red light component and the second emitting red light component, and this OLED luminescent device (10) can list following multiple structure:

5. large scale full color OLED display as claimed in claim 1, it is characterized in that: described OLED luminescent device (10) comprises the first electrode, the combination of at least one organic luminescence function film layer (10b) and the second electrode, described at least one organic luminescence function film layer combination (10b) is arranged between the first electrode and the second electrode, described first electrode and the second electrode can be reflection electrode layer (10c) or transparency conductive electrode layer (10a), at least comprise a luminescent layer in described organic luminescence function film layer combination (10b);

Described organic luminescence function film layer combination (10b) has three, these three organic luminescence function film layer combination (10b) superpose with between the second electrode in any order at the first electrode of OLED luminescent device (10), are isolated between adjacent organic luminescence function film layer combination (10b) by charge generating layer; The electroluminescent luminescent spectrum of described OLED luminescent device (10) comprises navy blue earth complex luminescent component, light blue earth complex luminescent component, the first emitting red light component and the second emitting red light component, and organic luminescence function film layer combination (10b) that this OLED luminescent device (10) comprises can be listed below:

(1) described OLED luminescent device (10) comprises navy blue and the first red organic luminescence function film layer combination, the combination of light blue organic luminescence function film layer and the second red organic luminescence function film layer combination;

(2) described OLED luminescent device (10) comprises navy blue and the combination of light blue luminous organic functions rete, the first emitting red light organic functions rete combination, the second emitting red light organic functions rete combination;

(3) described OLED luminescent device (10) comprises navy blue and the combination of the second emitting red light organic functions rete, the combination of light blue organic luminescence function film layer, the first red organic luminescence function film layer combination;

(4) described OLED luminescent device (10) comprises the combination of navy blue luminous organic functions rete, light blue and the first red organic luminescence function film layer combines, the second red organic luminescence function film layer combination;

(5) described OLED luminescent device (10) comprises the combination of navy blue luminous organic functions rete, light blue and the second red organic luminescence function film layer combines, the first red organic luminescence function film layer combination;

(6) described OLED luminescent device (10) comprises the combination of navy blue luminous organic functions rete, the combination of light blue organic luminescence function film layer, first red and the second red organic luminescence function film layer combination.

6. large scale full color OLED display as claimed in claim 1, it is characterized in that: described OLED luminescent device (10) comprises the first electrode, navy blue organic luminescence function film layer combines, light blue organic luminescence function film layer combination, first red organic luminescence function film layer combination, second red organic luminescence function film layer combination and the second electrode, described first electrode and the second electrode can be reflection electrode layer (10c) or transparency conductive electrode layer (10a), a luminescent layer is at least comprised in described organic luminescence function film layer combination (10b),

Four above-mentioned organic luminescence function film layer combination (10b) superpose with between the second electrode in any order at the first electrode of OLED luminescent device (10), are isolated between adjacent organic luminescence function film layer combination (10b) by charge generating layer.