CN104766919A - Light emitting device and display - Google Patents
Light emitting device and display Download PDFInfo
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- CN104766919A CN104766919A CN201510151205.4A CN201510151205A CN104766919A CN 104766919 A CN104766919 A CN 104766919A CN 201510151205 A CN201510151205 A CN 201510151205A CN 104766919 A CN104766919 A CN 104766919A
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- removing layer
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- 239000002245 particle Substances 0.000 claims abstract description 68
- 230000003287 optical effect Effects 0.000 claims abstract description 65
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000011368 organic material Substances 0.000 claims description 9
- 229910010272 inorganic material Inorganic materials 0.000 claims description 8
- 239000011147 inorganic material Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910003471 inorganic composite material Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 17
- 238000005538 encapsulation Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920001621 AMOLED Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910003134 ZrOx Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
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- 239000004568 cement Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- -1 titanium oxide-trimethoxy-silylpropyl acrylate Chemical compound 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses a light-emitting device which comprises a substrate, a light source assembly, a light extraction layer and first optical particles, wherein the light source assembly comprises a light-emitting element and an encapsulation structure. The light extraction layer is disposed on the package structure, wherein the first optical particles protrude from the first surface of the light extraction layer. The first optical particles have a first refractive index, the light extraction layer has a second refractive index, and the package structure has a third refractive index. The first refractive index is greater than the refractive index of air, and the second refractive index is greater than the first refractive index and the third refractive index. Therefore, the light extraction layer is beneficial to avoiding total reflection when light is incident to the outside of the light-emitting device from the light extraction layer, and the light extraction efficiency of the light-emitting device is further improved.
Description
Technical field
The present invention discloses a kind of light-emitting device and display, particularly a kind ofly comprises the light-emitting device improving light extraction efficiency optical particle and the display with this light-emitting device.
Background technology
The light-emitting component of display can be a kind of light-emitting diode (Light Emitting Diode by semi-conducting material manufacturing, LED), also can be the another kind of Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) be made by organic material.Wherein, light-emitting diode because of its have that power consumption is low, component life is long, the advantage such as reaction time short (fast response time), volume are little, therefore along with technology constantly progress, light-emitting diode is widely used in the backlight module of display.Organic Light Emitting Diode then has the advantages such as wide viewing angle, high-contrast, low power consumption, high reaction rate, true color, pliability, therefore the potential light-emitting component of the most being regarded as applying to display.
But, use at present light-emitting diode or Organic Light Emitting Diode not good as the display ubiquity luminous efficiency of light-emitting component and the problem that causes brightness on the low side.Wherein cause the reason that luminous efficiency is not good, be the light launched due to light-emitting component only have small part can outgoing to outside display, remaining light then can because in shown device encapsulating structure reflection and be absorbed.
Though have part dealer to increase by a smooth removing layer to avoid the packed structure reflects of light on encapsulating structure at present, however due to the variations in refractive index of light removing layer and outside display excessive, thus significantly hinder light from the outgoing of light removing layer to outside display.
Summary of the invention
In view of above problem, the invention provides a kind of light-emitting device and comprise the display of this light-emitting device, use the variations in refractive index improving light removing layer and outside display excessive and significantly hinder light from the outgoing of light removing layer to the problem of outside display.
Light-emitting device disclosed by the present invention comprises substrate, light source assembly, light removing layer and the first optical particle.Light source assembly comprises light-emitting component and encapsulating structure.Light-emitting component is arranged at substrate.Light-emitting component tool exiting surface, and encapsulating structure is arranged at exiting surface.Light removing layer is arranged at the encapsulating structure of light source assembly.The first surface that light removing layer tool is relative and second surface, and second surface is towards light source assembly.First optical particle is embedded at light removing layer and protrudes from first surface.First optical particle tool first refractive rate, light removing layer tool one second refractive index, and encapsulating structure tool one third reflect rate.First refractive rate is greater than the refractive index of air, and the second refractive index is greater than first refractive rate and third reflect rate.
The display that the present invention separately discloses comprises aforesaid light-emitting device, adhesion layer and polaroid, and adhesion layer is arranged at the first surface of light removing layer.Polaroid is arranged at adhesion layer.
Light-emitting device disclosed by the present invention and comprise the display of this light-emitting device, when the light that light source assembly produces is when the outgoing of light removing layer is outside to light-emitting device, some light is first incident in the first optical particle from light removing layer, is then incident to light-emitting device outside from the first optical particle again.The second refractive index due to light removing layer is greater than the first refractive rate of the first optical particle, and first refractive rate is greater than the refractive index of air, therefore light-emitting device has the variations in refractive index comparatively relaxed in first surface, help avoid light and produce total reflection when light removing layer is incident to light-emitting device outside, promote the light extraction efficiency of light-emitting device further.
The above explanation about content of the present invention and the explanation of following execution mode in order to demonstration and explanation principle of the present invention, and provide the protection range of the claim appended by the present invention further to explain.
Accompanying drawing explanation
Fig. 1 is the cut-away illustration of light-emitting device according to a first embodiment of the present invention;
Fig. 2 is the close-up schematic view of the 1st figure;
Fig. 3 is that the beam projecting that produces of light-emitting component is according to a first embodiment of the present invention to light-emitting device exterior light path schematic diagram;
Fig. 4 is the cut-away illustration of light-emitting device according to a second embodiment of the present invention;
Fig. 5 is the cut-away illustration of light-emitting device according to a third embodiment of the present invention;
Fig. 6 is the cut-away illustration of light-emitting device according to a fourth embodiment of the present invention;
Fig. 7 is the cut-away illustration of light-emitting device according to a fifth embodiment of the present invention;
Fig. 8 is the cut-away illustration of light-emitting device according to a sixth embodiment of the present invention;
Fig. 9 is the cut-away illustration of light-emitting device according to a seventh embodiment of the present invention;
Figure 10 is the cut-away illustration of light-emitting device according to a eighth embodiment of the present invention;
Figure 11 is the schematic perspective view of the display of the light-emitting device applying any embodiment of the present invention.
Wherein, Reference numeral:
1 display
10 light-emitting devices
10a substrate
20 polaroids
30 adhesion layers
100 light source assemblies
110 light-emitting components
111 exiting surfaces
120 encapsulating structures
121 first encapsulated layers
122 second encapsulated layers
121a first end face
1210 anti-reflection structures
122a second end face
123 resilient coatings
200 smooth removing layers
210 first surfaces
220 second surfaces
300 first optical particles
400 second optical particles
500 sides
B light
The particle diameter of P first optical particle
This volume of V1 first optical particle
The outstanding volume of V2 first optical particle
Embodiment
Below detailed features of the present invention and advantage is described in embodiments in detail; its content is enough to make any those skilled in the relevant technical field understand technology contents of the present invention and implement according to this; and the protection range of content disclosed by this specification, claim and graphic, any those skilled in the relevant technical field can understand the object and advantage that the present invention is correlated with easily.Following embodiment further describes viewpoint of the present invention, but non-to limit category of the present invention anyways.
Please refer to Fig. 1.Fig. 1 is the cut-away illustration of light-emitting device according to a first embodiment of the present invention.In the present embodiment, light-emitting device 10 comprises a substrate 10a, the smooth removing layer 200 of light source assembly 100, one and multiple first optical particle 300.
The material of substrate 10a is such as plastics or glass.
Light source assembly 100 is arranged at substrate 10a, and comprises light-emitting component 110 and an encapsulating structure 120.Light-emitting component 110 is such as Organic Light Emitting Diode, and it has an exiting surface 111.Encapsulating structure 120 is arranged at the exiting surface 111 of light-emitting component 110, and coated light-emitting component 110.Specifically, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122.These the first encapsulated layers 121 and the mutual storehouse of these second encapsulated layers 122, and the first adjacent encapsulated layer 121 directly contacts with the second encapsulated layer 122.The first encapsulated layer 121 near light-emitting component 110 is arranged at exiting surface 111 and complete coated light-emitting component 110.In the present embodiment, a thin-film packing structure (the Thin Film Encapsulation that encapsulating structure 120 is formed for inoranic membrane and the mutual Multilayer stack of organic film, TFE), and the thickness of encapsulating structure 120 is more than or equal to 1 micron (μm), and is less than or equal to 5 microns.Furthermore, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122 to meet the demand of the oxygen effect that well dewaters, but the present invention is not as limit.In other embodiments, the quantity of the first encapsulated layer 121 and the second encapsulated layer 122 can adjust, and its detailed content will further illustrate in follow-up.
The material of light removing layer 200 is such as epoxy resin (Epoxy), polymethyl methacrylate (acrylic, PMMA), silicon (Silicon), Polyethyleneglycol Terephthalate (PET), poly-naphthoic acid ethyl ester (PEN), Merlon (PC), polyimides (PI) or tin indium oxide (ITO).Or the material of light removing layer 200 can be an organic/inorganic composite material, and this organic/inorganic composite material is titanium oxide-trimethoxy-silylpropyl acrylate (TiOx-MSMA).In addition, the thickness of light removing layer 200 is more than or equal to 0.1 micron, and is less than or equal to 30 microns.
Light removing layer 200 has relative first surface 210 and a second surface 220.Second surface 220 is towards light source assembly 100, and an outer surface of encapsulating structure 120 directly contacts the second surface 220 of light removing layer 200.Specifically, near the first encapsulated layer 121 of light removing layer 200 with have respectively towards one first end face 121a of light removing layer 200 and one second end face 122a near the second encapsulated layer 122 of light removing layer 200.The first encapsulated layer 121 near light removing layer 200 directly contacts the second end face 122a of the second encapsulated layer 122 near light removing layer 200, and covers the second end face 122a completely.The second surface 220 of light removing layer 200 directly contacts the first end face 121a of the first encapsulated layer 121 near light removing layer 200.In the present embodiment, it (is such as organic oxygen film that blocks water that these first encapsulated layers 121 are all organic material, this refractive index is approximately 1.5), and these second encapsulated layers 122 are all inorganic material (be such as an inorganic oxygen film that blocks water, this refractive index is approximately 1.65).By this, the first encapsulated layer 121 contributes to preventing light removing layer 200 from coming off from the first end face 121a for organic material.In the present embodiment, the first encapsulated layer 121 near light removing layer 200 covers the second end face 122a of the second encapsulated layer 122 near light removing layer 200 completely, can be comparatively smooth when light removing layer 200 is formed on encapsulating structure 120, and thickness can be comparatively even, but it is not intended to limiting the invention.In other embodiments, also can not consider light removing layer 200 surface flatness and thickness uniformity and make the first encapsulated layer 121 near light removing layer 200 not exclusively cover the second end face 122a near the second encapsulated layer 122 of light removing layer 200, its detailed content will further illustrate in follow-up.
In the present embodiment, the first encapsulated layer 121 and the second encapsulated layer 122 material and be not used to limit the present invention.In other embodiments, it (is such as an inorganic oxygen film that blocks water that first encapsulated layer 121 can be an inorganic material, this refractive index is approximately 1.65), and the second encapsulated layer 122 can be an organic material (be such as organic oxygen film that blocks water, this refractive index is approximately 1.5).Therefore, in following explanation, the third reflect rate of encapsulating structure 120 will be considered as about 1.65, and in fact encapsulated layer is less than or equal to 1.65, should all by protection scope of the present invention.
First optical particle 300 is embedded at light removing layer 200 and protrudes from first surface 210.The material of the first optical particle 300 is such as inorganic material, and this inorganic material can comprise magnesium fluoride (MgFx), silica (SiOx), aluminium oxide (AlOx), zinc oxide (ZnOx), titanium oxide (TiOx), zinc selenide (ZnSe) or zirconia (ZrOx).
Optical property and the thin portion architectural feature of light removing layer, the first optical particle and encapsulated layer will be described below.Please with reference to Fig. 2.Fig. 2 is the close-up schematic view of Fig. 1.
First optical particle 300 has a first refractive rate (n1), and first refractive rate is greater than the refractive index (nair=1) of air.
Light removing layer 200 has one second refractive index (n2), and the second refractive index (n2) is greater than the first refractive rate of the first optical particle 300.The difference of first refractive rate and the second refractive index is greater than 0.01, and the second refractive index is more than or equal to 1.65.
Encapsulating structure 120 has a third reflect rate, and the second refractive index of light removing layer 200 is greater than third reflect rate.By this, contribute to the light that light-emitting component 110 produces to be extracted in light removing layer 200.
When the second refractive index of light removing layer 200 is greater than the first refractive rate of the first optical particle 300, more not easily produce total reflection by the light in the first optical particle 300 to air, and contribute to the light extraction efficiency (Light Extraction Efficiency) improving light-emitting device 10.For example, as shown in Table 1, as the second refractive index n 2=1.7 of light removing layer 200 and the first refractive rate n1=1.6 of the first optical particle 300 time, light-emitting device 10 has higher brightness, and (brill is candela every square metre, candelaper square meter, cd/m2).
When light-emitting device 10 is furnished with the first optical particle 300, the light-emitting device 10 that luminous efficiency does not configure the first optical particle 300 comes high.For example, as shown in Table 2, for the light-emitting device 10 of the second refractive index n 2=1.7 and third reflect rate n3=1.5, when not configuring the first optical particle 300, the brightness of light-emitting device 10 is 42.6cd/m
2.When configuring particle diameter 150nm and material is the first optical particle 300 of silica, the brightness of light-emitting device 10 is 56.5cd/m
2.Through the results show, the light-emitting device 10 with the first optical particle 300 at least can promote the brightness of 18%.
Except configuring the first optical particle 300, the second refractive index of adjustment light removing layer 200 further can promote the light extraction efficiency of light-emitting device 10.For example, as shown in Table 2, for the light-emitting device 10 of first refractive rate n1=1.5 and third reflect rate n3=1.5, as the second refractive index n 2=1.6, the brightness of light-emitting device 10 is 56.5cd/m
2.As the second refractive index n 2=1.7, the brightness of light-emitting device 10 is 58.3cd/m
2.As the second refractive index n 2=2.53, the brightness of light-emitting device 10 is 74.5cd/m
2.Through the results show, when configuration the first optical particle 300, the second higher refractive index more contributes to the light extraction efficiency promoting light-emitting device 10 further.
In the present embodiment, the particle diameter P of the first optical particle 300 is not limited with above-mentioned numerical value.Furthermore, particle diameter P is more than or equal to 0.1 micron, and is less than or equal to 20 microns.By this, suitably can adjust the size of the first optical particle 300 and contribute to making more light can be incident to the first optical particle 300 from light removing layer 200.
In addition, the first optical particle 300 has a volume V1.First optical particle 300 protrudes from the first surface 210 of light removing layer 200 and has an outstanding volume V2 (as shown in Figure 3).The ratio of outstanding volume V2 and this volume V1 is greater than 0 and is less than 1.By this, the first optical particle 300 can have enough sectional areas in first surface 210, contributes to making light be incident to the first optical particle 300 from light removing layer 200 further.Preferably, the ratio of outstanding volume V2 and this volume V1 can be greater than 0.2 and be less than or equal to 0.8.More preferably, the ratio of outstanding volume V2 and this volume V1 can be 0.5.
In the present embodiment, the production method that first optical particle 300 protrudes from the first surface 210 of light removing layer 200 is as follows: be coated with glazing removing layer 200 in light source assembly 100, recycling is shootd out machine (spraycoater) and is sprayed the first optical particle 300 in the first surface 210 of light removing layer 200, solidifies light removing layer 200 more afterwards and fixes the first optical particle 300 and be fixed on light removing layer 200.Above-mentioned production method helps avoid the inside that the first optical particle 300 is gathered in light removing layer 200, and then avoids producing the uneven problem of light scattering.
Please refer to Fig. 3.Fig. 3 is that the beam projecting that produces of light-emitting component is according to a first embodiment of the present invention to light-emitting device exterior light path schematic diagram.In figure 3, only depict the some light that light-emitting component 110 sends for convenience of description, but the only auxiliary signal explanation of this opticpath, and be not used to limit this invention.
When light-emitting component 110 sends at least one light B, light B is incident in light removing layer 200 through the exiting surface 111 of light-emitting component 110 and encapsulating structure 120.The second refractive index n 2 due to light removing layer 200 is greater than the third reflect rate n3 of encapsulating structure 120, and light removing layer 200 helps avoid light B and is back to light removing layer 200 from encapsulating structure 120 incidence and produces total reflection (Total internalreflection) by this.
When light B penetrates outside to light-emitting device 10 from light removing layer 200, light B is first incident in the first optical particle 300 from light removing layer 200, and then light B is incident to light-emitting device 10 outside from the first optical particle 300 again.It should be noted that the second refractive index n 2 of light removing layer 200 is greater than the first refractive rate n1 of the first optical particle 300, and first refractive rate n1 is greater than the refractive index of air.By this, light-emitting device 10 has in the first surface 210 of light removing layer 200 variations in refractive index comparatively relaxed.
The light-emitting device that above-described embodiment provides and and be not used to limit the present invention.Other embodiments of the present invention below will be provided.
In a first embodiment, encapsulating structure comprises multiple first encapsulated layer and multiple second encapsulated layer, but it is not intended to limiting the invention.Please refer to Fig. 4.Fig. 4 is the cut-away illustration of light-emitting device according to a second embodiment of the present invention.In the present embodiment, encapsulating structure 120 only comprises 2 first encapsulated layer 121 and one second encapsulated layers 122.The exiting surface 111 of the direct touch luminous element 110 of the first encapsulated layer 121 of closer substrate 10a.Second encapsulated layer 122 directly contacts the first encapsulated layer 121 of below away from the side of light removing layer 200, and directly contacts the second end face 122a of the second encapsulated layer 122 away from first encapsulated layer 121 of substrate 10a.The second surface 220 of light removing layer 200 directly contacts the first encapsulated layer 121 of top.
In a first embodiment, the first encapsulated layer near light removing layer covers the second end face of the second encapsulated layer near light removing layer completely, but it is not intended to limiting the invention.Please refer to Fig. 5.Fig. 5 is the cut-away illustration of light-emitting device according to a third embodiment of the present invention.In the present embodiment, near the incomplete second end face 122a covered near the second encapsulated layer 122 of light removing layer 200 of 200 first encapsulated layers 121 of light removing layer.
In addition, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
Please refer to Fig. 6.Fig. 6 is the cut-away illustration of light-emitting device according to a fourth embodiment of the present invention.Because the present embodiment is close with the first embodiment, therefore following embodiment only explains for deviation.
In the present embodiment, the light-emitting component 110 of the complete coated light source assembly 100 of light removing layer 200 and encapsulating structure 120.By this, contribute to improving light-emitting device 10 in the light extraction efficiency of a side 500.
In addition, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
Please refer to Fig. 7.Fig. 7 is the cut-away illustration of light-emitting device according to a fifth embodiment of the present invention.Because the present embodiment is close with the 4th embodiment, therefore following embodiment only explains for deviation.
In the present embodiment, light-emitting device 10 more comprises a resilient coating 123.Resilient coating 123 directly contacts the first encapsulated layer 121, and resilient coating 123 encapsulating sealing structure 120 completely.The material of the first encapsulated layer 121 is inorganic, and the material of the second encapsulated layer 122 and resilient coating 123 is organic material.The second surface 220 of light removing layer 200 directly contacts resilient coating 123.Because light removing layer 200 is generally speaking containing organic material, thus poor with the tack of inorganic material.Therefore when the first encapsulated layer 121 is for being unfavorable for during inorganic that light removing layer 200 is attached at the first end face 121a securely, therefore separately set up resilient coating 123 with the first encapsulated layer 121 avoiding light removing layer 200 directly to contact inorganic material.By this, can be comparatively smooth when light removing layer 200 is formed on encapsulating structure 120, thickness can be comparatively even, and tack also can be better.
In addition, in the present embodiment, resilient coating 123 completely coated these the first encapsulated layer 121 and these second encapsulated layers 122, but the present invention is not as limit.In other embodiments, the overlay area of light removing layer 200 is depended in the overlay area of resilient coating 123, and therefore resilient coating 123 can only cover part first encapsulated layer 121.
Moreover in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
Please refer to Fig. 8.Fig. 8 is the cut-away illustration of light-emitting device according to a sixth embodiment of the present invention.Because the present embodiment is close with the first embodiment, therefore following embodiment only explains for deviation.
In the present embodiment, light-emitting device 10 more comprises multiple second optical particle 400.Second optical particle 400 is arranged in light removing layer 200 and keeps a distance with first surface 210.Second optical particle 400 has a fourth reflect rate, and fourth reflect rate differs from the second refractive index of light removing layer 200, and fourth reflect rate can be identical with first refractive rate.By this, some light by the second optical particle 400 scattering, can contribute to adjusting these some light are incident to light-emitting device 10 outside incident angle from light removing layer 200, avoids these some light to produce total reflection in first surface 210 further.
In addition, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
Please refer to Fig. 9.Fig. 9 is the cut-away illustration of light-emitting device according to a seventh embodiment of the present invention.Because the present embodiment is close with the 6th embodiment, therefore following embodiment only explains for deviation.
In the present embodiment, the second surface 220 being arranged at the second optical particle 400 in light removing layer 200 and light removing layer 200 is tangent.By this, light-emitting device 10 has in the second surface 220 of light removing layer 200 variations in refractive index comparatively relaxed, help avoid some light and produce total reflection when encapsulating structure 120 is incident to light removing layer 200, promote the light extraction efficiency of light-emitting device 10 further.
In addition, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
Please refer to Figure 10.Figure 10 is the cut-away illustration of light-emitting device according to a eighth embodiment of the present invention.Because the present embodiment is close with the first embodiment, therefore following embodiment only explains for deviation.
In the present embodiment, the first end face 121a of the first encapsulated layer 121 directly contacted with the second surface 220 of light removing layer 200 has an anti-reflection structure 1210.Anti-reflection structure 1210 is such as the subwavelength structure (Sub-wavelength Structure) such as lenticule array or taper array.By this, the light extraction efficiency improving light-emitting device 10 is contributed to.
In addition, in the present embodiment, encapsulating structure 120 comprises multiple first encapsulated layer 121 and multiple second encapsulated layer 122, but the present invention is not as limit.In other embodiments, the first encapsulated layer 121 and the second encapsulated layer 122 the visual demand of quantity and adjust.
The various embodiments described above and the light-emitting device disclosed by other embodiments all can be equipped in display.Please refer to Figure 11.Figure 11 is according to the schematic perspective view comprising the display of light-emitting device of the present invention.As shown in figure 11, a display 1 comprises light-emitting device 10, polaroid 20 and an adhesion layer 30 that any embodiment in the various embodiments described above and other embodiments mentions.Adhesion layer 30 is arranged at the first surface 210 of light removing layer 200.Polaroid 20 is arranged at adhesion layer 30 and is fixed on first surface 210.Adhesion layer 30 is such as optical cement (Optical Clear Adhensive, OCA).Display 1 is such as an active-matrix Organic Light Emitting Diode (Active-matrix organic light-emitting diode, AMOLED) display.
In sum, the present invention disclose light-emitting device and comprise in the display of this light-emitting device, when the light that light source assembly produces is incident to light-emitting device outside from light removing layer, some light is first incident in the first optical particle from light removing layer, is then incident to light-emitting device outside from the first optical particle again.The second refractive index due to light removing layer is greater than the first refractive rate of the first optical particle, and first refractive rate is greater than the refractive index of air, therefore light-emitting device has the variations in refractive index comparatively relaxed in first surface, help avoid light and produce total reflection when light removing layer is incident to light-emitting device outside, promote the light extraction efficiency of light-emitting device further.
Although the present invention discloses as above with aforesaid preferred embodiment; so itself and be not used to limit the present invention; any those skilled in the relevant technical field; without departing from the spirit and scope of the present invention; when doing a little change and retouching, but these change the protection range that all should belong to the claim appended by the present invention with retouching accordingly.
Claims (21)
1. a light-emitting device, is characterized in that, comprises:
One substrate;
One light source assembly, comprise a light-emitting component and an encapsulating structure, this light-emitting component is arranged at this substrate, and this light-emitting component has an exiting surface, and this encapsulating structure is arranged at this exiting surface;
One smooth removing layer, is arranged at this encapsulating structure of this light source assembly, and this light removing layer has a relative first surface and a second surface, and this second surface is towards this light source assembly; And
Multiple first optical particle, is embedded at this light removing layer and protrudes from this first surface;
Wherein, those first optical particles have a first refractive rate, and this light removing layer has one second refractive index, and this encapsulating structure has a third reflect rate, this first refractive rate is greater than the refractive index of air, and this second refractive index is greater than this first refractive rate and this third reflect rate.
2. light-emitting device as claimed in claim 1, it is characterized in that, this encapsulating structure has an outer surface, and this outer surface directly contacts this second surface of this light removing layer.
3. light-emitting device as claimed in claim 1, it is characterized in that, this seal structure comprises one first encapsulated layer and one second encapsulated layer, and this first encapsulated layer directly contacts this second encapsulated layer, and this second surface of this light removing layer directly contacts this first encapsulated layer.
4. light-emitting device as claimed in claim 1, it is characterized in that, this encapsulating structure comprises multiple first encapsulated layer and multiple second encapsulated layer, those first encapsulated layers and the mutual storehouse of those the second encapsulated layers, and this adjacent first encapsulated layer directly contacts with this second encapsulated layer, this second surface of this light removing layer directly contacts this first encapsulated layer near this light removing layer.
5. light-emitting device as claimed in claim 4, it is characterized in that, this first encapsulated layer near this light removing layer has one first end face towards this light removing layer, and this second surface of this light removing layer directly contacts this first end face, and this first end face has an anti-reflection structure.
6. light-emitting device as claimed in claim 4, it is characterized in that, this second encapsulated layer near this light removing layer has one second end face towards this light removing layer, and covers this second end face completely near this first encapsulated layer of this light removing layer.
7. light-emitting device as claimed in claim 4, it is characterized in that, the material of those the first encapsulated layers is all inorganic, and the material of those the second encapsulated layers is all organic material.
8. light-emitting device as claimed in claim 4, it is characterized in that, the material of those the first encapsulated layers is all organic material, and the material of those the second encapsulated layers is all inorganic.
9. light-emitting device as claimed in claim 1, it is characterized in that, more comprise a resilient coating, wherein this encapsulating structure comprises multiple first encapsulated layer and multiple second encapsulated layer, those first encapsulated layers and the mutual storehouse of those the second encapsulated layers, this adjacent first encapsulated layer directly contacts with this second encapsulated layer, and this resilient coating directly contacts this first encapsulated layer near this light removing layer, and this second surface of this light removing layer directly contacts this resilient coating.
10. light-emitting device as claimed in claim 9, is characterized in that, this resilient coating this encapsulating structure completely coated.
11. light-emitting devices as claimed in claim 9, it is characterized in that, the material of those the first encapsulated layers is all inorganic, and the material of those the second encapsulated layers and this resilient coating is all organic material.
12. light-emitting devices as claimed in claim 1, is characterized in that, this light removing layer this light source assembly completely coated.
13. light-emitting devices as claimed in claim 1, it is characterized in that, those first optical particles have a particle diameter respectively, and this particle diameter is more than or equal to 0.1 micron, and are less than or equal to 20 microns.
14. light-emitting devices as claimed in claim 1, is characterized in that, the material of those the first optical particles is inorganic material, and this inorganic material comprises magnesium fluoride, silica, aluminium oxide, zinc oxide, titanium oxide, zinc selenide or zirconia.
15. light-emitting devices as claimed in claim 1, is characterized in that, the material of this light removing layer is an organic/inorganic composite material, and this second refractive index is more than or equal to 1.65.
16. light-emitting devices as claimed in claim 1, it is characterized in that, those first optical particles have a volume respectively, and protrude from this first surface respectively and have an outstanding volume, and wherein the ratio of this this this volume of excrescence sum is greater than 0, and is less than 1.
17. light-emitting devices as claimed in claim 16, is characterized in that, the ratio of this this this volume of excrescence sum is 0.5.
18. light-emitting devices as claimed in claim 1, is characterized in that, more comprise multiple second optical particle, wherein those second optical particles are arranged in this light removing layer and keep a distance with this first surface.
19. light-emitting devices as claimed in claim 18, it is characterized in that, those second optical particles have a fourth reflect rate, and wherein this fourth reflect rate is different from this second refractive index of this light removing layer.
20. light-emitting devices as claimed in claim 18, it is characterized in that, this second surface of those second optical particles and this light removing layer is tangent.
21. 1 kinds of displays, is characterized in that, comprise:
Just like claim 1 to 20 any one described in light-emitting device;
One adhesion layer, is arranged at this first surface; And
One polaroid, is arranged at this adhesion layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| TW104106264A TWI570965B (en) | 2015-02-26 | 2015-02-26 | Illumination device and display having the illumination device |
| TW104106264 | 2015-02-26 |
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| CN104766919A true CN104766919A (en) | 2015-07-08 |
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| CN201510151205.4A Pending CN104766919A (en) | 2015-02-26 | 2015-04-01 | Light emitting device and display |
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| TW (1) | TWI570965B (en) |
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| TWI570965B (en) | 2017-02-11 |
| TW201631805A (en) | 2016-09-01 |
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