CN1685251A - Blue color filter and organic electroluminescent device including the same - Google Patents

Blue color filter and organic electroluminescent device including the same Download PDF

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Publication number
CN1685251A
CN1685251A CN03823512.9A CN03823512A CN1685251A CN 1685251 A CN1685251 A CN 1685251A CN 03823512 A CN03823512 A CN 03823512A CN 1685251 A CN1685251 A CN 1685251A
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pigment
color filter
structural formula
expression
blue color
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CN100388017C (en
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川口刚司
小林良治
樱井建弥
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Fuji Electric Co Ltd
Sharp Corp
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Fuji Electric Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

A blue color filter comprising a first dye represented by the structural formula (1) in the description and a binder resin and further comprising a second dye capable of absorbing fluorescence from the first dye and not exhibiting any fluorescence maximum in the visible wavelength region. This blue color filter realize high blue color purity and transmission factor, being excellent in contrast and is suitable for use in an organic EL display. There is further provided an organic EL device including the same.

Description

Blue color filter and use the organic electroluminescent device of this blue color filter
Technical field
The present invention relates to portable terminal computer and industry with the employed blue color filter of the display device of tester and use the organic electroluminescent device (being designated hereinafter simply as " organic EL ") of this blue color filter.
Background technology
As one of the broken colourization of OLED display or method of full colorization, open flat 3-152897 communique, spy the spy and open in the communique such as flat 5-258860 communique and disclose a kind of look mapping mode, this look mapping mode be with absorb organic luminorphor light-emitting zone light and the fluorescent material that sends the fluorescence in the visible light scope is used for the look mapping mode of color filter.According to this mode, the illuminant colour of organic luminorphor is not limited to white, therefore, it applicable to the higher organic luminorphor of brightness as light source, the look mapping mode that the organic luminorphor that for example uses blue-light-emitting is transformed into different green light of wavelength or red light with blue light is documented in the spy and opens that flat 3-152897 communique, spy are opened flat 8-286033 communique, the spy opens in the flat 9-208944 communique.If on transparent support substrate, the fluorescence conversion film that comprises this fluorchrome is carried out high fine patterning, even if use the black light even the low-energy like this light of visible light of organic luminorphor so, still can construct the luminescence type display of full color.
In using with color filter and look conversion light filter and the organic EL of organic luminorphor as the look mapping mode of inscape, thermotolerance that manufacturing process requires for color monitor, weatherability when using as display, with the desired quality of the image of high-fineness, the color filter that use is made by the pigment dispersing method is a main flow, in photoresist solution, make redness, blue or green pigment differential is dissipated to below the particle diameter 1 μ m, then it is coated on the glass substrate, utilizes optical lithography to form pixel (with reference to special fair 4-37987 communique according to the pattern of defined, special fair 4-39041 communique etc.).
People wait in expectation always and improve excitation, color saturation, the light transmission amount of color filter, in order to improve the light transmission amount, currently used method is, minimizing forms with the content of the coloring pigment in the material with respect to photoresist at image, perhaps the formation thickness that utilizes image to form with the formed pixel of material is carried out the thinning processing.
But, in these methods, the color saturation of color filter itself reduces, and display integral body bleaches, and has sacrificed the vividness that shows necessary color, otherwise, improve coloring pigment content if pay the utmost attention to color saturation, the then whole deepening of display is in order to ensure brightness, must increase the light quantity of background light, thereby increase the power consumption of display.
For these problems, in order to improve the light transmission amount, well-known method is that the particle diameter differential of pigment particles is dissipated to below 1/2nd of its colour generation wavelength (Chi, in Dec, 1967, p608 understand in, look material association clear with reference to the bridge pawl), but because blue pigment is compared with other redness, viridine green, its colour generation wavelength is shorter, therefore, need further differential to loose in this case, thereby produce the problem that cost increases and disperse rear stability.
As blue pigment, copper phthalocyanine with crystal habit of α type, β type, ε type is that indigo plant is widely used (reference colored material engineering handbook, look material association compile, p333), if the copper phthalocyanine blue that uses the α type in color filter separately is as blue pigment, then its colouring power is lower, in order to present the aim colour saturation degree, must mix more pigment in photoresist, after forming color filter, its heat-resisting variable color reaches and the adhesiveness of glass substrate is still a difficult problem.In addition, also having wavelength is that light quantity is more, degradation problem under the excitation for above the seeing through of 600nm.
On the other hand, when the copper phthalocyanine blue of independent use ε type during as blue pigment, from its excellent colouring power, though can reduce the addition in photoresist, if but the combined amount of increase pigment is to obtain the aim colour saturation degree, then the light-proofness of photoresist when solidifying wavelength 365nm improves, and photocuring sensitivity reduces, and produces thickness reduction, the unstable such problem of pattern when video picture.
Because the copper phthalocyanine of β type is that indigo plant is viridescent slightly blueness, therefore, if use it as blue pigment separately, then the deviation of target TSC-system form and aspect becomes big.
In addition, known technology be in color filter, use copper phthalocyanine be in the basket Yu the dioxazine system purple pigment that mixes (the special fair 6-95211 communique of reference, Te Kaiping 1-200353 communique, special fair 4-37987 communique etc.), if utilize any colour mixture with as the purple I.C. pigment piperazine purple 23 of dioxazine system in above-mentioned three kinds of copper phthalocyanine blues, the light transmission that then not only can suppress 500～550nm, can also improve excitation, but also exist light transmission to be suppressed as the blue region 420～500nm of target, brightness during as display reduces such problem.During as display, compare, be suppressed in 70%～80%, therefore, require to improve the light transmission amount of blue color filter because of Polarizer makes the light transmission rate of blue region with other color region.
The object of the present invention is to provide low blue color filter of a kind of blue transmitance height and green transmitance and the good organic electroluminescent device of blue purity.
Summary of the invention
In order to achieve the above object, in the present invention, blue color filter contains structural formula (1) represented the 1st pigment and adhering resin, also contains fluorescence that absorbs above-mentioned the 1st pigment and the 2nd pigment that does not have maximum fluorescence (fluorescence maximum) in visible wavelength area simultaneously.
[structural formula (1)]
[in structural formula (1), R 1～R 6Hydrogen atom, alkyl, aryl or the heterocyclic radical that can replace of expression independently respectively.R 7The expression carbon number is 1～6 chain unsaturated alkyl.X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic system negative ion.]
As mentioned above,, not only can suppress the light transmission rate of 500nm～600nm and improve blue purity by the blue dyes of represented the 1st pigment of utilization structure formula (1) as blue color filter, simultaneously can also be as the high blue color filter of light transmission amount.In addition, it is when containing the 1st pigment, the 2nd pigment that also contains the fluorescence that absorbs the 1st pigment and do not have maximum fluorescence below as the 750nm of visible wavelength area, thus, the fluorescence of 600nm～700nm that the 2nd pigment absorption the 1st pigment is produced, thus prevent that blue purity from reducing.
Blue color filter of the present invention comprises structural formula (1) represented the 1st pigment and adhering resin, also comprises the 2nd represented pigment of structural formula (2) simultaneously.
[structural formula (1)]
[in structural formula (1), R 1～R 6Hydrogen atom, alkyl, aryl or the heterocyclic radical that can replace of expression independently respectively.R 7The expression carbon number is 1～6 chain unsaturated alkyl.X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic anion.]
[structural formula (2)]
[in structural formula (2), R 1Expression hydrogen atom, alkyl, aryl or heterocyclic radical.X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic anion.Y represents O atom or S atom.A represents 1～6 integer.]
In addition, in blue color filter of the present invention, also can contain the quencher negative ion of the fluorescence delustring that makes the 1st above-mentioned pigment or the 2nd pigment.
Organic electroluminescent device of the present invention uses above-mentioned blue color filter at least a portion of its color filter.
Description of drawings
Fig. 1 is the diagrammatic cross-section that possesses the organic EL of blue color filter of the present invention.
Symbol description: 100 organic ELs, 10 transparent support substrates, 20 blue color filters, 30 organic protection layers, 40 inorganic oxide films, 500 organic luminorphors, 50 transparent anodes, 51 hole injection layers, 52 hole transporting layers, 53 luminescent layers, 54 electron injecting layers, 55 negative electrodes.
Embodiment
As shown in Figure 1; the organic EL 100 of present embodiment is to form blue color filter 20, organic protection layer 30, inorganic oxide film 40, transparent anode 50, hole injection layer 51, hole transporting layer 52, luminescent layer 53, electron injecting layer 54 and negative electrode 55 on transparent support substrate 10 successively, makes it constitute organic EL 100 as a whole.
Below, employed each material describes in the modulation with material to forming at the blue image that forms blue color filter 20 usefulness of the present invention.
[the 1st pigment]
It is that pigment is as the 1st pigment that blue color filter of the present invention contains the represented cyanines of structural formula (1).Can a represented a kind of pigment of utilization structure formula (1), also can be used in combination its a plurality of kinds.The represented cyanines of structural formula (1) are pigment, because himself chemistry and thermal stability height, therefore, even do not use the pigment dispersing method, the thermotolerance of blue color filter is still very high.And, also can in the 1st pigment, mixed copper phthalocyanine system wait other blue pigment to use.
When material was used in acquisition blue image formation of the present invention, the represented cyanines of structural formula (1) were the mixing ratio of pigment with respect to adhering resin, are preferably 0.1～40 weight portion.Thus, not only can suppress the light transmission of 500～550nm, can also improve excitation.In addition, the represented cyanines of structural formula (1) are that pigment also can carry out using after the pigmentation, as the autofrettage of blue pigment dispersion, can utilize well-known method.For example, blue and represented cyanines of structural formula (1) are pigment with organic solvent, reach the pigment derivative (interpolation as required) and the spreading agent of decentralized stabilization purpose with copper phthalocyanine system, the differential that dispersion machines such as use puddle mixer carry out pigment looses and stabilization, thus, just can make that to contain the blue and represented cyanines of structural formula (1) of copper phthalocyanine system be the blue pigment dispersion of pigment.
[the 2nd pigment]
Add the fluorescence (600nm～700nm) and in visible wavelength area (below the 750nm) do not have the pigment of fluorescence that absorbs the 1st pigment as the 2nd pigment.The 2nd pigment is preferably 0.1～40 weight portion with respect to the mixing ratio of adhering resin.In addition, in order to play the function of blue color filter, be preferably the pigment that in blue wavelength region, does not have absorption.Specifically, when color filter adds,, then can use if be pigment more than 60% in the transmitance of 450nm.
For example can enumerate iodate 1,1 '-diethyl-4,4 '-carbocyanine (koha), iodate 1,1 '-diethyl-2,2 '-two carbocyanines (DDI), iodate 3,3 '-dimethyl subunit three carbocyanines (Methyl DOTCI), iodate 1,1 ', 3,3,3 ', 3 '-hexamethyl indotricarbocyanine (HITCI), IR125 (Lambda Phisik system), iodate 1,1 '-diethyl-4,4 '-carbocyanine (koha), IR144 (Lambda Phisik system), iodate 3,3 '-diethyl-9, new pentenyl thiazole three carbocyanines of 11-(DNTTCI), iodate 1,1 ', 3,3,3 ', 3 '-hexamethyl-4,4 ', 5,5 '-dibenzo-2,2 '-indotricarbocyanine (HDITCI), iodate 1,2 '-diethyl-4,4 '-two carbocyanines (DDCI-4) etc.
Perhaps, as the 2nd pigment, can the represented cyanines of utilization structure formula (2) be pigment.Specifically can enumerate iodate 3,3 '-diethyl thiazole three carbocyanines (DTTCI), iodate 3,3 '-diethyl-4,4 ', 5,5 '-bisbenzothiazole three carbocyanines (DDTTCI) etc.
[structural formula (2)]
Figure A0382351200091
[in structural formula (2), R 1Expression hydrogen atom, alkyl, aryl or heterocyclic radical.X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic anion.Y represents O atom or S atom.A represents 1～6 integer.]
[quencher]
Because employed pigment is that kation is a pigment,, for example can use the creating singlet oxygen by using quencher of negative ion system as quencher.Specifically, can use the spy to open clear 59-55795 number, spy and disclosed transition metal chelate, two imonium salt (bis-iminium salts) in the communique such as open clear 60-234892 number.
[bonding agent]
As the employed adhering resin of blue color filter of the present invention, so long as have the visible light permeability, and get final product with the good adhesion of substrate, can use known thermoplastic resin, thermoset resin, photo-curable resin etc.Owing to have the fine pattern that photosensitive resin can be made color filter with comparalive ease, therefore, it is the choosing of ideal especially.
[making of blue color filter and organic EL]
Forms by the blue image that on transparent support substrate 10, constitutes by above-mentioned each material and to use material with the pattern coating of regulation, thus formation blue color filter layer 20.Coating method is not particularly limited, and can use common spin-coating method, rolling method, flow coat method, silk screen print method, ink-jet method etc.Curing also is not particularly limited, not only can use heat curing (to consider the deterioration of fluorescent material, preferably solidify being no more than under 150 ℃ the temperature conditions), moisture-curable, chemosetting, photocuring (consider the deterioration of fluorescent material, preferably under the visible light condition, solidify), but also can be used in combination these curings.
Before forming blue pixel or afterwards, use as required red or/and green pixel forms material, thereby form redness or/and green color filter so just can be made the polychrome color filter.In addition, on this color filter across organic protection layer 30 and inorganic oxide film 40 stacked organic luminorphors 500, so just can make the organic EL of polychrome.As the laminating method of organic luminorphor 500, can enumerate: the method that on color filter, forms transparent anode 50, hole injection layer 51, hole transporting layer 52, luminescent layer 53, electron injecting layer 54 and negative electrode 55 successively; The method that is fitted at the organic luminorphor 500 that forms on other substrate on the inorganic oxide film 40.The organic EL of producing by this method 100 had both gone for the OLED display of passive drive mode, also went for the OLED display of active type of drive.
Below embodiments of the invention are described.
(embodiment 1)
[making of black mask]
Though not expression in Fig. 1, but in order to eliminate the catoptrical influence of blue color filter 20 and transparency electrode 50 ends when degree of comparing is estimated, at first set black mask, its purpose is can't see blue color filter 20 ends from transparent support substrate 10 surfaces.
Utilize spin-coating method on the whole surface of the transparent support substrate 10 of glass, to apply black mask masking liquid (CK8400L, Fuji Photo film ARCH system), under 80 ℃ condition, it is carried out after the heat drying, utilize the photoetch method, obtained the black mask pattern of the striated in 0.13mm spacing, 0.10mm gap.
[making of blue color filter]
Use transparent optical polymerism resin (Nippon Steel's chemistry (strain) system, 259PAP5) as bonding agent, with respect to transparent optical polymerism resin solid state component 100 weight portions, that adds 2 weight portions uses the pigment shown in the structural formula (3) as blue dyes, in addition, add 1 weight portion with the 2nd represented pigment of structural formula (4) (HDITCI of Lambda Physik society system) as the blue color filter masking liquid.
[structural formula (3)]
[structural formula (4)]
Utilize spin-coating method, this blue color filter of coating carries out utilizing photo-engraving process to form the blue color filter pattern of the striated in 0.13mm spacing, 0.01mm gap after the heat drying to it with masking liquid and film forming under 80 ℃ condition on transparent support substrate 10.
[making of organic EL]
By said method, on an interarea of the transparent support substrate 1 of glass, form after the blue color filter 20, make film organic protection layer 30 and inorganic oxide layer 40 in the above successively, form organic emitter 500 more thereon, make organic EL 100.Organic luminorphor layer 500 utilizes six layers of being made of transparent anode 50/ hole injection layer 51/ hole transporting layer 52/ luminescent layer 53/ electron injecting layer 54/ negative electrode 55 to form.Below, its concrete production process is described.
Be formed with on the transparent support substrate 10 of above-mentioned blue color filter 20; apply transparent optical polymerism resin (Nippon Steel's chemistry (strain) system; 259PAP5) and make its drying, forming thickness on blue color filter 20 is the organic protection layer 30 of 5 μ m, utilizes sputtering method to form by SiO in the above 2The thickness that constitutes is the inorganic oxide layer 40 of 100nm.Then, utilize sputtering method equally, the layer that constitutes by ITO at the whole surface filming of above-mentioned inorganic oxide layer 40, thus obtain transparent anode 50 by carrying out following patterning.That is ((strain) system should be changed in Tokyo, OFRP-800) afterwards, by photo-engraving process, forms the transparent anode 50 of the candy strip in 0.13mm line-spacing, 0.01mm gap, to apply the photoresist that thickness is 100nm on above-mentioned ITO film.
Then, this substrate is packed in the resistance heated evaporation coating device, according to the order of hole injection layer 51, hole transporting layer 52, luminescent layer 53, electron injecting layer 54 and negative electrode 55, film forming under vacuum condition.Press in vacuum tank during film forming and be decompressed to 1 * 10 -4Pa.Specifically, hole injection layer 51 is copper phthalocyanine (CuPc) layer of 100nm for thickness, hole transporting layer 52 is 4 of 20nm for thickness, 4 '-(NPD) layer, luminescent layer 53 are 4 of 30nm for thickness to two [N-(1-naphthyl)-N-anilino-] biphenyl, 4 '-two (2,2 '-diphenylacetylene) biphenyl (DPVBi) layer, electron injecting layer 54 are three (oxine) aluminium coordination compound (Alq) layer of 20nm for thickness.Negative electrode is that thickness is the Mg/Ag (weight ratio is 1: 10) of 20nm, by the mask evaporation coating technique, forms the 0.33mm spacing vertical with anode line, the candy strip in 0.05mm gap.
After the system film of above-mentioned each layer finished, taking-up organic EL 100 under condition of nitrogen gas, utilized seal glass and UV bonding agent from evaporation coating device, element was sealed make it directly not contact (not shown) with air.The organic EL 100 that completes is emitted in the blue light that wavelength 470nm place has peak value.
(embodiment 2)
In the formation of the blue color filter in embodiment 1, except the pigment that embodiment 1 employed the 2nd pigment is changed into structural formula (5) expression adds 1 weight portion as the 2nd pigment and with respect to transparent optical polymerism resin solid state component 100 weight portions, all the other have all made organic EL according to the mode identical with embodiment 1.
[structural formula (5)]
Figure A0382351200121
(embodiment 3)
In the formation of the blue color filter in embodiment 2, except using the nickel coordination compound of structural formula (6) expression as the quencher with 0.3 mole of ratio interpolation to 1 mole of the 1st pigment, all the other all modulate the blue color filter masking liquid according to the mode identical with embodiment 2, and have obtained organic EL in an identical manner.
[structural formula (6)]
Figure A0382351200131
(comparative example 1)
Employed the 1st pigment and the 2nd pigment in replacing embodiment 1 and use copper phthalocyanine system blue as the pigment, all the other all modulate blue color filter coating according to the mode identical with embodiment 1.In addition,, when forming blue color filter, modulate, make that the light transmission rate of wavelength 470nm is identical with embodiment 1 with the thickness identical with embodiment 1 about the addition of pigment.
(evaluation)
For the sample that completes, carry out following evaluation.Evaluation result is as shown in table 1.Herein, cie color is to make the element that completes luminous and its colourity is estimated.Use colorimeter (Da mound electronics system, MCPD-1000) measure.Contrast is to have compared fluorescent light (1000lx) contrast when oblique miter angle is radiated at the display surface of element.Numerical value in the table is that the result that sets comparative example is 1.0 relative value, if its numerical value greater than 1.0, then contrast improves.Transmitance is to use extinction photometer (the system UV-2100PC of Shimadzu Seisakusho Ltd.) to obtain extinction spectrum, has compared the light transmission rate of wavelength 470nm and 510nm.
[table 1]
Embodiment 1 Embodiment 2 Embodiment 3 Comparative example 1
1. cie color (x, y) ????0.12、0.09 ????0.12、0.10 ????0.13、0.10 ????0.16、0.18
2. contrast ????1.4 ????1.4 ????1.6 ????1.0
3. transmitance (470nm) ????85％ ????85％ ????85％ ????85％
??(510nm) ????50％ ????48％ ????46％ ????60％
As shown in table 1, make light transmission rate under the 470nm wavelength condition consistent and light transmission rate under the 510nm wavelength condition when forming film is higher than comparative example in an embodiment.This means with the color filter of comparative example and compare, the color filter among the embodiment, the light-proofness of the wavelength region may that its blue purity reduces is higher.In addition, make the color filter of the comparative example of pigment dispersing in bonding agent, in color filter, reach scattering takes place at the interface easily.In contrast, the color filter of embodiment, pigment are dissolved in the bonding agent fully, demonstrate the numerical value that the transparency is high, contrast is high.
Utilizability on the industry
According to the present invention, can provide the high but also contrast of a kind of not only blue purity and the transmitance also good blue color filter that is applicable to OLED display and the organic EL that uses this blue color filter.

Claims (4)

1. blue color filter is characterized in that: contains the 1st pigment and the adhering resin of useful structural formula (1) expression, also contains fluorescence that absorbs described the 1st pigment and the 2nd pigment that in visible wavelength area, does not have maximum fluorescence simultaneously,
Structural formula (1):
In structural formula (1), R 1～R 6Hydrogen atom, alkyl, aryl or the heterocyclic radical that can replace of expression independently respectively, R 7The expression carbon number is 1～6 chain unsaturated alkyl, X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic system negative ion.
2. blue color filter is characterized in that: contains the 1st pigment and the adhering resin of useful structural formula (1) expression, also contains the 2nd pigment of useful structural formula (2) expression simultaneously,
Structural formula (1):
In structural formula (1), R 1～R 6Hydrogen atom, alkyl, aryl or the heterocyclic radical that can replace of expression independently respectively, R 7The expression carbon number is 1～6 chain unsaturated alkyl, X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic system negative ion,
Structural formula (2):
In structural formula (2), R 1Expression hydrogen atom, alkyl, aryl or heterocyclic radical.X -Expression is selected from I -, Br -, Cl -, F -, ClO 3 -, BrO 3 -, IO 3 -, ClO 4 -, BF 4 -, PF 4 -, SbF 4 -, BrO 4 -And the negative ion in the organic anion, Y represents O atom or S atom.A represents 1～6 integer.
3. blue color filter according to claim 1 and 2 is characterized in that: the quencher negative ion that contains the fluorescence delustring that makes described the 1st pigment or the 2nd pigment.
4. organic electroluminescent device that organic luminorphor and color filter are laminated, it is characterized in that: at least a portion of described color filter is each described blue color filter in the claim 1～3.
CNB038235129A 2003-06-30 2003-06-30 Blue color filter and organic electroluminescent device including the same Expired - Fee Related CN100388017C (en)

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CN101878674A (en) * 2007-11-29 2010-11-03 大日本印刷株式会社 Organic EL device, color filter, and organic EL display

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TW572969B (en) * 2000-02-10 2004-01-21 Hayashibara Biochem Lab Trimethine cyanine dye, light absorbent, light-resistant improver and optical recording medium containing same, and process for producing same
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CN101878674A (en) * 2007-11-29 2010-11-03 大日本印刷株式会社 Organic EL device, color filter, and organic EL display
US8946681B2 (en) 2007-11-29 2015-02-03 Dai Nippon Printing Co., Ltd. Organic el device with color filter, and organic EL display

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