CN1649457A - Tunable planar color conversion organic device and its preparation method - Google Patents
Tunable planar color conversion organic device and its preparation method Download PDFInfo
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- CN1649457A CN1649457A CNA2004100025236A CN200410002523A CN1649457A CN 1649457 A CN1649457 A CN 1649457A CN A2004100025236 A CNA2004100025236 A CN A2004100025236A CN 200410002523 A CN200410002523 A CN 200410002523A CN 1649457 A CN1649457 A CN 1649457A
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Abstract
The invention provides a method for manufacturing a plane color conversion device capable of adjusting color, which at least comprises the following steps: a.) providing a fluorescent and/or a phosphorescent material; b.) uniformly blending the fluorescent and/or phosphorescent material with a transparent medium; and c) forming a planar color conversion layer on an electronic device, and converting the short wavelength light emission spectrum emitted by the electronic device into a long wavelength light emission spectrum through the microscopic light color mixing effect of the fluorescent and/or phosphorescent material, so as to modulate the light emission or display color of the electronic device. The planar color conversion device with color adjustable made by the method of the invention is also disclosed.
Description
Technical field
The invention relates to a kind of electronic installation of mixing colours and method for making thereof, the particularly a kind of film color conversion equipment and method for making thereof of mixing colours with color converting layer of complanation.
Background technology
Electronic installations such as display unit, lighting device or measuring equipment are just towards light, thin, short, little trend development, with the liquid crystal flat panel display is example, if the development of light source can't cooperate the component structure of complanations such as membrane transistor, Polarizer, colored filter, then just further attenuation of the thickness of whole liquid crystal flat panel display also can't cooperate light, thin, short, little now application trend.So the low profile light source, particularly white light source of exploitation complanation show that to whole the science and technology and the demand of illumination science and technology are very urgently.
White heat traditionally (incandescent) lamp, halogen (halogen) lamp, and fluorescence (fluorescent) though lamp has bright and benefit cheap for manufacturing cost, but its principle of luminosity is to produce high temperature to dissociate air impingement fluorescent material and luminous with high resistance, but aforementioned mentioned high temperature can cause the device radiation load problem, even can cause the organic substance deterioration in the product and make failure of apparatus; Moreover limited itself cylindrical configuration so can't be applied in the modern electronic installation with collocation in complanation.
And in existing liquid crystal flat panel display technology, though utilize incandescent lamp, Halogen lamp LED, fluorescent lamp etc. as Backlight For Liquid Crystal Display Panels, so be subject to the cylindrical configuration of fluorescent tube itself, and the problem of generation non-uniform light, wait the problem that is overcome its luminance nonuniformity so must increase extra light guide plate, reflecting plate, diffuser plate and prism plate, but piling up layer by layer causes also enlarged in thickness, luminous efficiency to reduce, reach the cost increase.
Again, technology with the complanation light source/display of LED (Light emitting diodes) exploitation is also arranged now, and blue light and white light technology have been developed at present, but problem such as also need overcome of heap of stone brilliant material and special sapphire substrate cost height, processing procedure difficulty height, brightness is not good and luminous efficiency is to be hoisted, when particularly the technology of this class being applied in the field of illumination, how to grow up large-area GaAs or gallium chloride brilliant substrate of heap of stone and film certainly will become the challenging technical bottleneck of tool in future; And the calotte of the LED optically focused of non-flattening structure is unbecoming with the complanation feature of script GaAs or gallium chloride brilliant substrate of heap of stone and film, and its complanation feature originally of LED also is damaged.In addition, white light LEDs is to be formed by Red led lighting elements combination, lacks, reaches on the not good shortcoming of stability in circuit complexity, life-span still must overcome.
So organic light emission/display device technology of having developed at present overcomes the shortcoming of bulb, liquid crystal indicator, inorganic light-emitting technology; Yet for self luminous organic light emission/display unit, to be to use the organic functional material that itself has the characteristics of luminescence luminous because of it, produces different photochromic so need add backlight and colored filter unlike liquid crystal indicator.Yet organic light emitting apparatus just has the demand of the organic functional material of the different luminous frequency spectrums of exploitation in comparison, with the illumination/display application in response to full-colorization of display unit or different luminous frequency spectrums.But with regard to present trichromatic luminescent material exploitation, blue light and the existing good achievement of green light material exploitation, but still lacking available material on red light material to be complementary with blue light and green light material, the commercialization bottleneck that causes present full-colorization of organic light emitting apparatus, because the exploitation of new material own just needs very high research cost, is full of uncertainty, is very high research risk.Again, if after researching and developing out good red illuminating material, also need to arrange in pairs or groups mutually and could effectively satisfy the life-span of organic light emitting apparatus, the demand of reliability with other organic functional material such as electron injecting layer, electron transfer layer, electric hole transfer layer and electric hole implanted layer; And above-mentioned electron injecting layer, electron transfer layer, electric hole transfer layer and electric hole implanted layer material whether available old material replace or need exploitation again to be still and be full of uncertainty, delayed widely full-color organic display unit practical commercial incision opportunity.Above-mentioned is at the three-primary colours developing material and opinion, and on light source applications, the new material of other Huangs, orange, indigo, purple is developed needed development cost and risk full of uncertainty.
In the past development course of relevant white transition layer technology, United States Patent (USP) the 5th, 831 is in No. 375 " Electroluminescent Lamp Using Multilayer Optical Film " documents, although form color converting layer optically focused with sandwich construction, the light that is sent still only has blue light.Even at another United States Patent (USP) the 6th, 140, in the document of No. 764 " Orangic Electroluminescent Apparatus withMicrocavily ", in the sandwich construction of color converting layer, improved the mode of optically focused effectively, but still as described in the last invention, the light that sends still only has blue light.
The invention provides a kind of film color conversion equipment and method for making thereof of mixing colours, a processing procedure is simple to provide, complanation, be fit to volume production, high brightness and the good electronic installation of the uniformity, for the application of illumination, demonstration or checkout gear.
Summary of the invention
The present invention provides a kind of film color conversion equipment and method for making thereof of mixing colours, and forms the color converting layer of a complanation on electronic installation, utilizes the complanation look of the microcosmic fusion of atom level to change a layer technology, by to overcome the defective of above-mentioned prior art.
One of the present invention purpose provides a kind of simple, suitable volume production, high brightness, good film color conversion equipment of mixing colours of the uniformity made, with the utilization that illumination is provided, shows or detect.
A further object of the present invention is to have high answer speed, power saving, can be used in DC driven and spendable temperature range is big, in light weight, and formed product can lightness and slimming, more can meet the requirement of multimedia era.
Another object of the present invention, be by characteristic by the complanation color converting layer, be integrated in the architectural characteristic of plane electronics device (including but not limited to organic light emission/display unit, inorganic light-emitting/display unit, lyo-luminescence/display unit, lumination of light emitting diode/display unit, electricity slurry luminescent/display device, vacuum fluorescence luminescent/display device, field emission luminescent/display device and electrochromism luminescent/display device etc.), with the luminous or Show Color of modulation plane electronics device.
When being applied to organic light emission/display unit, another object of the present invention, be the characteristic that sees through the complanation color converting layer, save the new luminous organic material cost of exploitation and the uncertainty of research and development, and expand the application of existing organic light emission/display unit in the different color conversion.
For reaching above-mentioned purpose, the film color conversion organic device that the present invention can mix colours, be to comprise one first electrode, at least one organic functional layer and one second electrode to be arranged in regular turn on the substrate, and at least one complanation color converting layer is arranged at first electrode and/or second electrode opposite side with respect to the organic functional layer; Wherein the complanation color converting layer is to have a fluorescence and/or the even fusion of a phosphor material in a transparent medium, is the long emission wavelength frequency spectrum with the short-wave long light-emitting spectral conversion that the organic functional layer is sent.
For reaching above-mentioned purpose, the film color conversion equipment that the present invention can mix colours, be comprise one first electrode, at least one luminous/show that start district and one second electrode are arranged on the substrate in regular turn, and at least one complanation color converting layer is arranged at first electrode and/or second electrode opposite side with respect to luminous/demonstration start district; Wherein the complanation color converting layer is to have a fluorescence and/or the even fusion of a phosphor material in a transparent medium, with luminous/show that the short-wave long light-emitting spectral conversion that the start district is sent is the long emission wavelength frequency spectrum.
Wherein, electronic installation comprises but is not limited to plane electronics device, curved surface electronic installation or ring-type electronic installation etc. that electronic installation is to can be lighting device, display unit or checkout gear.
For reaching above-mentioned purpose, the method for making of the film color conversion equipment that the present invention can mix colours comprises following steps at least: a fluorescence and/or a phosphor material are provided; With fluorescence and/or phosphor material and the even fusion of a transparent medium; And the color converting layer that forms a complanation by the photochromic melange effect of the microcosmic of fluorescence and/or phosphor material, is the long emission wavelength frequency spectrum in order to the short-wave long light-emitting spectral conversion that electronic installation is sent on an electronic installation.For allowing above-mentioned explanation of the present invention and other purposes, feature and advantage more can become apparent, and hereinafter the spy lists preferred embodiment and cooperates appended graphicly, elaborates.
Description of drawings
Fig. 1 is according to preparation flow chart of the present invention;
Fig. 2 (a) to Fig. 2 (j) be the schematic diagram that complanation color converting layer of the present invention is arranged at the electronic installation diverse location; And
Fig. 3 is the schematic diagram of the organic functional layer of organic light emission/display unit of the present invention.
Embodiment
Relevant the present invention reaches above-mentioned purpose, the technology that is adopted, means and specific structural features, and now for a preferable feasible embodiment, and clear, detailed as following by further disclosing by illustrating.
At first, see also the method for making of Fig. 1 film color conversion equipment of mixing colours provided by the present invention, at first step 102 provides a fluorescence and/or a phosphor material; In preferred embodiment, fluorescence and/or phosphor material are made up of at least one red, blue, green three primary colors fluorescence and/or phosphor material, and fluorescence and/or phosphor material are to can be organic material or inorganic material; Further, fluorescent material be can be any existing fluorescent material (can be with reference to USP 5,869,929, USP 3,172,862, USP5,935,720), fluorescent material comprises more than one organic dyestuff or more than one inorganic pigment, and it can be selected from YBO
3: Ce
3+, Tb
3+, SrGa
2S
4: Eu
2+, Y
2O
2S:Eu
3+, Bi
3+, YAG:Ce
3+, SrGa
2O
4: Eu
2+And CaS:Eu at least one of them; Phosphor material is to can be any existing phosphor material (can with reference to US20020190250A1, WO01/41512, WO00/57676).Coming step 103 again is with fluorescence and/or phosphor material and the even fusion of a transparent medium; In preferred embodiment, the dose ratio of fluorescence and/or phosphor material is by the principle modulation of long emission wavelength frequency spectrum according to different three primary colors fluorescence of balance and/or phosphor material luminous efficiency; More and, transparent medium be optional autoxidation silicon, titanium oxide, epoxy resin, polymethyl methacrylate (PMMA), tetrafluoroethylene resin (tetrafluoroethylene resin) and silicones (silicon resin) at least one of them.And last step 104 is to form the color converting layer of a complanation on an electronic installation, by the photochromic melange effect of the microcosmic of fluorescence and/or phosphor material, be converted to the long emission wavelength frequency spectrum in order to the short-wave long light-emitting frequency spectrum (for example ultraviolet light or blue light) that electronic installation is sent, and the glow color of modulation electronic installation.Transparent medium can be solid material (radiation-cured material) of light or thermosetting material (thermal-cured material), and the solid material of this light can utilize irradiating ultraviolet light to be solidified, and the thermosetting material can utilize heating to be solidified.Present embodiment fluorescence and/or phosphor material can be nanometer grade powder.
Especially, step 104 can be formed at color converting layer on the electronic installation by the wet type coating process; Then can form an encapsulated layer more thereon, further, encapsulated layer is that to be selected from acryl be that resin, epoxy are that one of them constitutes at least for resin, fluorine resin, silica, silicon nitride, silicon oxynitride and class diamondlike thin film.Further, to change floor be to be formed at first electrode of electronic installation and/or second electrode opposite side with respect to luminous/demonstration start district to the look of complanation.
Perhaps, step 104 also can be formed at the complanation color converting layer on the electronic installation by dry process.In dry process, even fusion is to make target behind the direct weighing measurement of fluorescence and/or phosphor material and transparent medium, or make target with sol-gel or coprecipitation method, carry out evaporation subsequently, sputter or ion beam depositing, on electronic installation, form the complanation color converting layer, the dose ratio of fluorescence and/or phosphor material wherein, be that principle by the deposition rate difference of balance fluorescence and/or phosphor material is determined, for example make the dose ratio of slower fluorescence of deposition rate and/or phosphor material be higher than the deposition rate dose ratio of fluorescence and/or phosphor material faster, the short-wave long light-emitting spectral conversion that makes electronic installation send is the long emission wavelength frequency spectrum.And can directly deposit other one deck silicon nitride or class diamondlike thin film encapsulated layer in same dry type deposition manufacture process, the encapsulated layer that has protective effect with formation is on the complanation color converting layer.
Fig. 2 (a)～Fig. 2 (i) shows that complanation color converting layer of the present invention is arranged at the schematic diagram of electronic installation diverse location.The film color conversion equipment 2 of mixing colours of preferred embodiment of the present invention, be comprise one first electrode 202, at least one luminous/show that the start district 203 and-the second electrode 204 are arranged on the substrate 201 in regular turn, and at least one complanation color converting layer 210 be arranged at first electrode 202 and/or second electrode 204 with respect to luminous/show the opposite side in start district 203; Wherein complanation color converting layer 210 is to have a fluorescence and/or the even fusion of a phosphor material in a transparent medium, with luminous/show that the short-wave long light-emitting spectral conversion that start district 203 is sent is the long emission wavelength frequency spectrum.
Wherein, substrate 201 be selected from plastic substrate, glass substrate and semiconductor substrate at least one of them.
As Fig. 2 (a) to shown in Fig. 2 (c), complanation color converting layer 210 is to be arranged at the opposite side of first electrode 202 with respect to luminous/demonstration start district 203, and arrow is to be converted to the direction of long emission wavelength frequency spectrum through complanation color converting layer 210 for luminous/short-wave long light-emitting frequency spectrum that demonstration start district 203 is sent.The present invention more can comprise an encapsulated layer 220 (shown in Fig. 2 (c)), is arranged on the complanation color converting layer 210, with protection complanation color converting layer.
The film color conversion equipment 2 of mixing colours of preferred embodiment of the present invention more comprises a cover plate 205 and sealing 206; in order to protect first electrode 202; luminous/demonstration start the district 203 and second electrode 204; be not subjected to moisture in the atmosphere; oxygen; the influence of dust and particulate etc.; as Fig. 2 (d) to shown in Fig. 2 (f); complanation color converting layer 210 is to be arranged at the opposite side of second electrode 204 with respect to luminous/demonstration start district 203, and arrow is to be converted to the direction of long emission wavelength frequency spectrum through complanation color converting layer 210 for luminous/short-wave long light-emitting frequency spectrum that demonstration start district 203 is sent.
The film color conversion equipment 2 of mixing colours of preferred embodiment of the present invention more comprises a protective layer 207; in order to protect first electrode 202; luminous/demonstration start the district 203 and second electrode 204; be not subjected to moisture in the atmosphere; oxygen; the influence of dust and particulate etc.; as Fig. 2 (g) to shown in Fig. 2 (h); complanation color converting layer 210 is to be arranged at first electrode 202 respectively; second electrode 204 is with respect to the opposite side in luminous/demonstration start district 203, and arrow is to be converted to the direction of long emission wavelength frequency spectrum through complanation color converting layer 210 for luminous/short-wave long light-emitting frequency spectrum that demonstration start district 203 is sent.
Shown in Fig. 2 i; the present invention more can integrate protective layer and color converting layer; also be about to fluorescence and/or the even fusion of phosphor material in protective layer material; with form complanation color converting layer 210 '; in order to protect first electrode 202, luminous/demonstration start district 203 and second electrode 204; be not subjected to the influence of moisture in the atmosphere, oxygen, dust and particulate etc., simultaneously with luminous/show that the short-wave long light-emitting frequency spectrum that start district 203 is sent is converted to the long emission wavelength frequency spectrum through complanation color converting layer 210.
Shown in Fig. 2 (j), the film color conversion equipment 2 of mixing colours of preferred embodiment of the present invention more can cooperate the structural design of the two-way luminous/demonstration of electronic installation, with complanation color converting layer 210 be arranged at first electrode 202 and second electrode 204 with respect to luminous/show the opposite side in start district 203, arrow be for luminous/show that short-wave long light-emitting frequency spectrum that start district 203 is sent is converted to the direction of long emission wavelength frequency spectrum through complanation color converting layer 210.Luminous/complanation color converting layer 210 of showing 203 both sides, start district more can be respectively with luminous/show that the short-wave long light-emitting spectral conversion that start district 203 is sent is different long emission wavelength frequency spectrums.
Wherein, between complanation color converting layer 210 and substrate 201, complanation color converting layer 210 and first electrode 202, complanation color converting layer 210 and second electrode 204, complanation color converting layer 210 and the cover plate 205, more can comprise a resilient coating (not shown), adhesion, reinforcement, obstruct, effect such as smooth are provided.
The present invention can be applicable to plane electronics device, curved surface electronic installation or ring-type electronic installation etc., for example organic light emission/display unit, inorganic light-emitting/display unit, lyo-luminescence/display unit, lumination of light emitting diode/display unit, electricity are starched luminescent/display device, vacuum fluorescence luminescent/display device, field emission luminescent/display device and electrochromism luminescent/display device, with the usefulness as lighting device, display unit or checkout gear.
When the present invention is applied to organic light emission/display unit, luminous/as to show that the start district is organic functional floor 203, please refer to Fig. 3, it can comprise an electron injecting layer 2031, an electron transfer layer 2032, organic luminous layer 2033, one electric hole transfer layer, 2034, one an electric hole implanted layer 2035 and combination thereof.In addition, be applicable to that the material of organic light emission/display unit of the present invention is unrestricted, can be any organic light emission commonly used/display unit material, comprise micromolecule organic material or macromolecule organic material.
Film color conversion equipment and method for making thereof of mixing colours provided by the present invention, utilize the microcosmic fusion of fluorescence and/or phosphor material particle level, comply with the different luminous frequency spectrum that each electronic installation sends, modulation fluorescence and/or phosphor material, make the complanation conversion layer be changed out various required luminous frequency spectrums, to overcome the defective of prior art.Simultaneously, the present invention can provide simple, the suitable volume production of a processing procedure, high brightness, the good apparatus structure of the uniformity.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any personage who is familiar with this skill; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (38)
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|---|---|---|---|
| CNA2004100025236A CN1649457A (en) | 2004-01-30 | 2004-01-30 | Tunable planar color conversion organic device and its preparation method |
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| CNA2004100025236A CN1649457A (en) | 2004-01-30 | 2004-01-30 | Tunable planar color conversion organic device and its preparation method |
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| CN101680992B (en) * | 2007-06-04 | 2016-10-19 | 皇家飞利浦电子股份有限公司 | The illuminator of Color tunable, lamp and luminaire |
| CN108883622A (en) * | 2016-03-31 | 2018-11-23 | 默克专利有限公司 | Color conversion sheet and optical device |
| CN109405996A (en) * | 2018-10-17 | 2019-03-01 | 京东方科技集团股份有限公司 | A kind of thermometer and its control method |
-
2004
- 2004-01-30 CN CNA2004100025236A patent/CN1649457A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680992B (en) * | 2007-06-04 | 2016-10-19 | 皇家飞利浦电子股份有限公司 | The illuminator of Color tunable, lamp and luminaire |
| CN105070802A (en) * | 2015-08-14 | 2015-11-18 | Tcl集团股份有限公司 | White light QLED member and preparation method |
| CN108883622A (en) * | 2016-03-31 | 2018-11-23 | 默克专利有限公司 | Color conversion sheet and optical device |
| CN109405996A (en) * | 2018-10-17 | 2019-03-01 | 京东方科技集团股份有限公司 | A kind of thermometer and its control method |
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