CN102569659A - Organic-inorganic LED (Light-Emitting Diode) surface light source module and manufacturing method thereof - Google Patents
Organic-inorganic LED (Light-Emitting Diode) surface light source module and manufacturing method thereof Download PDFInfo
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- CN102569659A CN102569659A CN2010106077969A CN201010607796A CN102569659A CN 102569659 A CN102569659 A CN 102569659A CN 2010106077969 A CN2010106077969 A CN 2010106077969A CN 201010607796 A CN201010607796 A CN 201010607796A CN 102569659 A CN102569659 A CN 102569659A
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Abstract
The invention provides an organic-inorganic LED (Light-Emitting Diode) surface light source module, which at least comprises three structures including (1) an organic light emitting diode (OLED), (2) an inorganic fluorescent powder coating layer, and (3) an encapsulating layer. A part of blue light emitted by OLEDs is absorbed by fluorescent powder, and remaining blue light is mixed with yellow light or green-red light emitted by the fluorescent powder to obtain white light. According to an organic-inorganic LED white-light surface light source, white light of which the color temperature is 2,500-7,500 K can be obtained by selecting luminescent spectra of OLEDs of appropriate types and the chemical composition and thickness of the fluorescent powder. The encapsulating layer is used for protecting the OLED and a coating layer of the fluorescent powder. In particular, an OLED layer is prevented from being invaded by oxygen and moisture.
Description
Technical field
The present invention relates to a kind of LED illuminating product, particularly a kind of organic-inorganic LED modular surface light source and manufacturing approach thereof.
Background technology
Along with the develop rapidly of LED technology and reaching its maturity of great power LED production technology, its low consumption, efficient, volume is little, in light weight and numerous advantages such as long-life, and it is widely used.Wherein, organic semiconductor illumination, the solid light source that promptly adopts the light-emitting diode OLED (Organic Light Emitting Diode) of luminous organic material to be made has energy-saving and environmental protection, slimming and luminous many advantages such as evenly.Along with the continuous lifting of luminous organic material performance, OLED except that use with flat-panel monitor, also can be used for lighting field, because of the characteristic of its area source has luminous evenly, soft, and can adopt flexible substrate to make light source, have a good application prospect.Lighting field mainly adopts the white light OLED of high brightness; Device generally is made up of with yellow organic luminous layer red, green, blue three primary colors or blue, and the device architecture complicacy of made, luminous efficiency are lower, stability and life-span are poor, use as lighting source; Cost is very high, is difficult to practicality.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art; Solve above-mentioned OLED and use existing problem as lighting source; The present invention proposes and adopt a kind of organic blue light-emitting as excitation source; Use high and stable inorganic yellow of luminous efficiency or green and red luminous compound white light organic and inorganic light-emitting diodes (Inorganic OrganicLED) device of fluorescent material then; Have simple in structure, luminous efficiency is high, the life-span is long, reliability is high, luminous characteristics such as evenly, and makes the cost of device manufacturing significantly reduce, and is easy to industrialization volume production and practicability.And the manufacturing approach of this organic-inorganic LED modular surface light source.
For achieving the above object, technical scheme of the present invention is: a kind of organic-inorganic LED modular surface light source, comprise an OLED that can send short-wavelength light, and said OLED is the OLED of blue light or blue green light; At least one is transparency electrode for two electrodes of said OLED, and said organic-inorganic LED modular surface light source also is provided with one deck at least can be mixed into the inorganic fluorescent powder layer of white light by said short-wavelength light stimulated luminescence and with said short-wavelength light.
Preferably, phosphor powder layer directly be coated on the transparency electrode of said OLED, on the substrate of said OLED or on the said encapsulated layer.
Preferably, said OLED and inorganic fluorescent powder layer are packaged in one and are used to protect in the encapsulated layer of OLED and fluorescent material.
Preferably, one of them perhaps is transparency electrode the negative electrode of said OLED and anode, and said transparency electrode surface has at least one to be coated with said inorganic fluorescent powder layer.
Preferably, the fluorescent material that selected phosphor powder layer adopted comprises a kind of in inorganic quanta point material, the organic light emission dyestuff or their mixture.
Preferably, it is characterized in that the transparency electrode of said OLED is oxide, carbon-based material or silver-based material.
Preferably, said oxide is ITO, FTO or AZO.
Preferably, the opaque electrode of said OLED is the high-reflectivity metal film.
Preferably, the opaque electrode of said OLED is high reflectance aluminium film or silver-colored film.
Preferably, the surface of the substrate of the transparency electrode of said OLED, said OLED, said encapsulated layer and/or said phosphor powder layer is an alligatoring face.
The preparation method of organic-inorganic LED modular surface light source may further comprise the steps:
(1) adopting glass or polymer substrate to make organic blue light emitting light source is OLED; Said OLED is made up of anode, charge carrier (electronics and hole) implanted layer, luminescent layer and negative electrode, and an electrode layer in said anode and the negative electrode adopts the metallic film of high reflectance;
(2) in the transparent side of said OLED, the yellow of coating inorganic, or green and red fluorescence coating;
(3) device is carried out sealed package.
Adopt the beneficial effect of present technique scheme to be: the present invention provides a kind of organic-inorganic LED modular surface light source, and it has and comprises three structures (1) organic electroluminescent LEDs (OLED) at least; (2) inorganic fluorescent powder coat; (3) encapsulated layer.The part blue light that OLEDs sends is absorbed by fluorescent material, and the gold-tinted that remaining blue light and fluorescent material send or green-ruddiness mix and obtains white light.This organic-inorganic LED white light area source can be through the luminescent spectrum of selection suitable type OLEDs and the chemical composition and the thickness of fluorescent material, and obtaining colour temperature is the white light of all kinds of 2500-7500K.Encapsulated layer is used to protect the coat of OLED and fluorescent material, particularly oled layer to avoid oxygen and steam invasion.The present invention adopts a kind of organic blue light-emitting as excitation source; Use high and stable inorganic yellow of luminous efficiency or green and red luminous compound white light organic and inorganic light-emitting diodes (the Inorganic Organic LED) device of fluorescent material then; Have simple in structure, luminous efficiency is high, the life-span is long, reliability is high, luminous characteristics such as evenly; And make the cost of device manufacturing significantly reduce, be easy to industrialization volume production and practicability.And the manufacturing approach of this organic-inorganic LED modular surface light source.
Description of drawings
Shown in Figure 1 is the schematic cross-section of device architecture of the present invention;
Fig. 2 is the schematic cross-section of emitting structural at the bottom of a kind of device of the present invention;
Fig. 3 is the schematic cross-section of a kind of device emission structure at top of the present invention;
Fig. 4 is the schematic cross-section of the two-sided emitting structural of a kind of device of the present invention;
Fig. 5 is a packaging structural section sketch map in the inorganic fluorescence coating of a kind of device of the present invention;
Fig. 6 is the inorganic fluorescence coating outer package of a kind of device of a present invention device architecture schematic cross-section.
The numeral corresponding component title represented among the figure with letter:
Substrate 1a; Transparency electrode 1b; Organic layer 1c; Metal electrode 1d; Phosphor powder layer 2; Encapsulated layer 3; Transparent substrates 4; Transparency electrode 5; Organic charge carrier transmission and luminescent layer 6; Metal electrode layer 7; Phosphor powder layer 8; Substrate 9; Non-transparent electrode 10; Organic charge carrier transmission and luminescent layer 11; Phosphor powder layer 12; Last transparency electrode 13; Transparent substrates 14; Transparent bottom electrode 15; Organic layer 16; Last phosphor powder layer 17; Transparent upper electrode 18; Following phosphor powder layer 19; Substrate 20; Bottom electrode 21; Organic layer 22; Transparent encapsulated layer 23; Fluorescence coating 24; Top electrode 25; Substrate 26; Bottom electrode 27; Organic layer 28; Last phosphor powder layer 29; Encapsulated layer 30; Top electrode 31; Following phosphor powder layer 32
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Embodiment 1,
As shown in Figure 1, the compound white light LED area lighting source of organic-inorganic is connected in sequence by phosphor powder layer 2, substrate 1a, transparency electrode 1b, organic layer 1c, metal electrode 1d and encapsulated layer 3 from down to up.The short-wavelength light of present embodiment is by exciting between transparency electrode 1b and the metal electrode 1d; Pass transparency electrode 1b, substrate 1a and phosphor powder layer 2 downwards successively; It is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder; The light that all the other short-wavelength lights and fluorescent material send is mixed into white light, penetrates thereby generate white light.
Embodiment 2,
As shown in Figure 2, the compound white light LED area lighting source of organic-inorganic is connected in sequence by phosphor powder layer 8, transparent substrates 4, transparency electrode 5, organic charge carrier transmission and luminescent layer 6, metal electrode layer 7 from down to up.The short-wavelength light of present embodiment is by exciting between transparency electrode 5 and the metal electrode 7; Pass transparency electrode 5, transparent substrates 4 and phosphor powder layer 8 downwards successively; It is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder; The light that all the other short-wavelength lights and fluorescent material send is mixed into white light, penetrates thereby generate white light.
Embodiment 3,
As shown in Figure 3; The compound white light LED area lighting source of organic-inorganic is connected in sequence by substrate 9, non-transparent electrode 10, organic charge carrier transmission and luminescent layer 11, last transparency electrode 13, phosphor powder layer 12 from down to up; The short-wavelength light of present embodiment is by exciting between last transparency electrode 13 and the non-transparent electrode 10; Upwards pass transparency electrode 13 and phosphor powder layer 12 successively; It is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder, and the light that all the other short-wavelength lights and fluorescent material send is mixed into white light, penetrates thereby generate white light.
As shown in Figure 4, the compound white light LED area lighting source of organic-inorganic is from down to up by descending phosphor powder layer 19, transparent substrates 14, transparent bottom electrode 15, organic layer 16, transparent upper electrode 18, last phosphor powder layer 17 to be connected in sequence.The short-wavelength light of present embodiment is by exciting between transparent upper electrode 18 and the transparent bottom electrode 15; Upwards pass transparent upper electrode 18 and last phosphor powder layer 17 successively; It is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder; The light that all the other short-wavelength lights and fluorescent material send is mixed into white light, penetrates thereby generate white light.Simultaneously short-wavelength light passes transparent bottom electrode 15, transparent substrates 14 and following phosphor powder layer 19 downwards successively, and it is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder, and the light that all the other short-wavelength lights and fluorescent material send is mixed into white light, thus the ejaculation of generation white light.White light is launched on two sides of the present invention simultaneously.
As shown in Figure 5; The compound white light LED area lighting source of organic-inorganic is connected in sequence by substrate 20, bottom electrode 21, organic layer 22, top electrode 25, fluorescence coating 24, transparent encapsulated layer 23 from down to up; The short-wavelength light of present embodiment is by exciting between top electrode 25 and the bottom electrode 21; Upwards pass top electrode 25, phosphor powder layer 24 and transparent encapsulated layer 23 successively; It is luminous that wherein a part of short-wavelength light is used for excitated fluorescent powder, and the light that all the other short-wavelength lights and fluorescent material send is mixed into white light, penetrates thereby generate white light.
As shown in Figure 6; The compound white light LED area lighting source of organic-inorganic is from down to up by descending phosphor powder layer 32, substrate 26, bottom electrode 27, organic layer 28, top electrode 31, encapsulated layer 30, last phosphor powder layer 29 to be connected in sequence; In like manner, present embodiment is the scheme that white light is penetrated on the two sides simultaneously.
Adopt the beneficial effect of present technique scheme to be: the present invention provides a kind of organic-inorganic LED modular surface light source, and it has and comprises three structures (1) organic electroluminescent LEDs (OLED) at least; (2) inorganic fluorescent powder coat; (3) encapsulated layer.The part blue light that OLEDs sends is absorbed by fluorescent material, and the gold-tinted that remaining blue light and fluorescent material send or green-ruddiness mix and obtains white light.This organic-inorganic LED white light area source can be through the luminescent spectrum of selection suitable type OLEDs and the chemical composition and the thickness of fluorescent material, and obtaining colour temperature is the white light of all kinds of 2500-7500K.Encapsulated layer is used to protect the coat of OLED and fluorescent material, particularly oled layer to avoid oxygen and steam invasion.The present invention adopts a kind of organic blue light-emitting as excitation source; Use high and stable inorganic yellow of luminous efficiency or green and red luminous compound white light organic and inorganic light-emitting diodes (the Inorganic Organic LED) device of fluorescent material then; Have simple in structure, luminous efficiency is high, the life-span is long, reliability is high, luminous characteristics such as evenly; And make the cost of device manufacturing significantly reduce, be easy to industrialization volume production and practicability.And the manufacturing approach of this organic-inorganic LED modular surface light source.
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (11)
1. an organic-inorganic LED modular surface light source comprises an OLED that can send short-wavelength light, and said OLED is the OLED of blue light or blue green light; At least one is transparency electrode for two electrodes of said OLED, and said organic-inorganic LED modular surface light source also is provided with one deck at least can be mixed into the inorganic fluorescent powder layer of white light by said short-wavelength light stimulated luminescence and with said short-wavelength light.
2. organic-inorganic LED modular surface light source as claimed in claim 1 is characterized in that, phosphor powder layer directly is coated on the transparency electrode of said OLED, on the substrate of said OLED or on the said encapsulated layer.
3. organic-inorganic LED modular surface light source as claimed in claim 1 is characterized in that, said OLED and inorganic fluorescent powder layer are packaged in one and are used to protect in the encapsulated layer of OLED and fluorescent material.
4. organic-inorganic LED modular surface light source as claimed in claim 1 is characterized in that one of them perhaps is transparency electrode the negative electrode of said OLED and anode, and said transparency electrode surface has at least one to be coated with said inorganic fluorescent powder layer.
5. organic-inorganic LED modular surface light source as claimed in claim 1 is characterized in that, the fluorescent material that selected phosphor powder layer adopted comprises a kind of in inorganic quanta point material, the organic light emission dyestuff or their mixture.
6. like the arbitrary described organic-inorganic LED modular surface light source of claim 1 to 5, it is characterized in that the transparency electrode of said OLED is oxide, carbon-based material or silver-based material.
7. organic-inorganic LED modular surface light source as claimed in claim 6 is characterized in that said oxide is ITO, FTO or AZO.
8. organic-inorganic LED modular surface light source as claimed in claim 6 is characterized in that the opaque electrode of said OLED is the high-reflectivity metal film.
9. organic-inorganic LED modular surface light source as claimed in claim 8 is characterized in that, the opaque electrode of said OLED is high reflectance aluminium film or silver-colored film.
10. organic-inorganic LED modular surface light source as claimed in claim 6 is characterized in that the surface of the transparency electrode of said OLED, the substrate of said OLED, said encapsulated layer and/or said phosphor powder layer is an alligatoring face.
11. the preparation method of organic-inorganic LED modular surface light source as claimed in claim 1 may further comprise the steps:
(1) adopting glass or polymer substrate to make organic blue light emitting light source is OLED; Said OLED is made up of anode, charge carrier (electronics and hole) implanted layer, luminescent layer and negative electrode, and an electrode layer in said anode and the negative electrode adopts the metallic film of high reflectance;
(2) in the transparent side of said OLED, the yellow of coating inorganic, or green and red fluorescence coating;
(3) device is carried out sealed package.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032765A (en) * | 2012-12-11 | 2013-04-10 | 京东方科技集团股份有限公司 | Light source module, liquid crystal display device and neon lamp display device |
| JP2015149230A (en) * | 2014-02-07 | 2015-08-20 | コニカミノルタ株式会社 | organic electroluminescent panel |
| CN105058909A (en) * | 2015-08-14 | 2015-11-18 | 纳晶科技股份有限公司 | Fluorescent film structure, preparation method thereof and display device |
| CN105226159A (en) * | 2015-04-24 | 2016-01-06 | 纳晶科技股份有限公司 | Electroluminescent white light device |
| WO2017206216A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳市华星光电技术有限公司 | Oled display device |
| CN109004094A (en) * | 2018-07-20 | 2018-12-14 | 苏州大学 | Flexible white light device |
| CN111200044A (en) * | 2020-01-13 | 2020-05-26 | 华南理工大学 | Thin film type white light LED chip |
| CN111244316A (en) * | 2020-04-03 | 2020-06-05 | 安徽中益新材料科技有限公司 | Preparation method of time-delay luminous surface light source DFLED lamp |
| WO2020211153A1 (en) * | 2019-04-18 | 2020-10-22 | 深圳市华星光电半导体显示技术有限公司 | Double-sided white organic light-emitting diode display device and manufacturing method thereof |
| CN114578613A (en) * | 2020-11-30 | 2022-06-03 | 优美特创新材料股份有限公司 | Backlight module containing fluorescent powder and quantum dots |
| US11984538B2 (en) | 2020-01-13 | 2024-05-14 | South China University Of Technology | Thin-film white LED chip |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032765A (en) * | 2012-12-11 | 2013-04-10 | 京东方科技集团股份有限公司 | Light source module, liquid crystal display device and neon lamp display device |
| JP2015149230A (en) * | 2014-02-07 | 2015-08-20 | コニカミノルタ株式会社 | organic electroluminescent panel |
| CN105226159A (en) * | 2015-04-24 | 2016-01-06 | 纳晶科技股份有限公司 | Electroluminescent white light device |
| CN105226159B (en) * | 2015-04-24 | 2018-10-12 | 纳晶科技股份有限公司 | electroluminescent white light device |
| CN105058909A (en) * | 2015-08-14 | 2015-11-18 | 纳晶科技股份有限公司 | Fluorescent film structure, preparation method thereof and display device |
| WO2017206216A1 (en) * | 2016-06-01 | 2017-12-07 | 深圳市华星光电技术有限公司 | Oled display device |
| CN109004094A (en) * | 2018-07-20 | 2018-12-14 | 苏州大学 | Flexible white light device |
| WO2020211153A1 (en) * | 2019-04-18 | 2020-10-22 | 深圳市华星光电半导体显示技术有限公司 | Double-sided white organic light-emitting diode display device and manufacturing method thereof |
| CN111200044A (en) * | 2020-01-13 | 2020-05-26 | 华南理工大学 | Thin film type white light LED chip |
| CN111200044B (en) * | 2020-01-13 | 2021-10-08 | 华南理工大学 | Thin film type white light LED chip |
| US11984538B2 (en) | 2020-01-13 | 2024-05-14 | South China University Of Technology | Thin-film white LED chip |
| CN111244316A (en) * | 2020-04-03 | 2020-06-05 | 安徽中益新材料科技有限公司 | Preparation method of time-delay luminous surface light source DFLED lamp |
| CN114578613A (en) * | 2020-11-30 | 2022-06-03 | 优美特创新材料股份有限公司 | Backlight module containing fluorescent powder and quantum dots |
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Application publication date: 20120711 |