CN207690830U - A kind of organic electroluminescent LED - Google Patents
A kind of organic electroluminescent LED Download PDFInfo
- Publication number
- CN207690830U CN207690830U CN201721616304.6U CN201721616304U CN207690830U CN 207690830 U CN207690830 U CN 207690830U CN 201721616304 U CN201721616304 U CN 201721616304U CN 207690830 U CN207690830 U CN 207690830U
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- Prior art keywords
- layer
- light
- organic electroluminescent
- gallium nitride
- area
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- 239000010410 layer Substances 0.000 claims abstract description 134
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- 239000011521 glass Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 239000012044 organic layer Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 229910002601 GaN Inorganic materials 0.000 claims description 22
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 15
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 claims description 7
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 3
- 230000001427 coherent effect Effects 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- Electroluminescent Light Sources (AREA)
Abstract
The utility model discloses a kind of organic electroluminescent LEDs.It includes the silicon carbide substrates stacked gradually, light passes through layer, cathode layer, photosensitive resin layer, organic layer, anode layer and glass panel, the refractive index of anode layer is more than the refractive index of glass panel, organic layer includes in separation layer of the matrix distribution on photosensitive resin layer and the luminescent layer being arranged between multiple separation layers, recess forms curved surface downwards on the surface of luminescent layer, anode layer has the through-hole of multiple perforations, the position of through-hole is corresponding with the position of luminescent layer, light includes that light spacer region and light pass through area by floor, light spacer region is in matrix distribution silicon carbide substrates, light is formed in by area between light spacer region, the material of light spacer region is barn door, the material that light passes through area is light guide plate, light is corresponding with the position of luminescent layer by area.The utility model can improve the angular range of emergent light.
Description
Technical field
The utility model is related to technical field of semiconductors, more particularly to a kind of organic electroluminescent LED.
Background technology
Existing majority Organic Light Emitting Diode, which is generally stacked gradually by cathode layer, luminescent layer, anode layer and glassy layer, to be formed,
Electrons and holes are injected from cathode and anode respectively, form exciton in luminescent layer and emitting layer material is excited to shine.In this mould
In formula, due to the build-in attribute of refractive index, part light reflects after luminescent layer is incident to anode layer in anode layer so that
The refraction angle of anode layer light is more than incidence angle, since the refraction angle of anode layer is equal to the incidence angle of glassy layer so that glassy layer
Incidence angle be more than anode layer incidence angle, even greater than or equal to glassy layer critical angle so that part light is in glass
It is totally reflected between layer and air layer, leads to the less efficient of light extraction.
Utility model content
The utility model can improve light extraction mainly solving the technical problems that provide a kind of organic electroluminescent LED
Efficiency.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of organic electroluminescence hair is provided
Optical diode, including stack gradually silicon carbide substrates, light by layer, cathode layer, photosensitive resin layer, organic layer, anode layer and
Glass panel, the refractive index of the anode layer are more than the refractive index of the glass panel, and the organic layer includes in matrix distribution
Separation layer on the photosensitive resin layer and the luminescent layer being arranged between the multiple separation layer, the table of the luminescent layer
Recess forms curved surface downwards, and the anode layer has the through-hole of multiple perforations, the position of the through-hole and the luminescent layer
Position is corresponding, and the light includes light spacer region and light by area by floor, and the smooth spacer region described in matrix distribution in being carbonized
On silicon substrate, between the light is formed in the smooth spacer region by area, the material of the smooth spacer region is barn door, the light
It is light guide plate by the material in area, the light is corresponding with the position of the luminescent layer by area.
Preferably, the shape of the through-hole is truncated cone, and the opening diameter below the through-hole is more than opening for top
Mouth diameter.
Preferably, the luminescent layer is formed by multiple gallium nitride layers and multiple aluminum gallium nitride layer intersectings, the multiple
It is more than institute inserted with stress-buffer layer, the lattice constant of the stress-buffer layer at least one of gallium nitride layer gallium nitride layer
State the lattice constant of gallium nitride layer and aluminum gallium nitride layer.
Preferably, the material of the stress-buffer layer is GaInAs.
Preferably, the thickness of the stress-buffer layer is 0.6nm.
Preferably, the stress-buffer layer forms coherent boundary with the gallium nitride layer.
Preferably, the cross sectional shape of the separation layer is isosceles trapezoid.
The utility model has the beneficial effects that：The case where being different from the prior art, the anode layer in the utility model have
The through-hole of perforation is so that the part light being emitted by luminescent layer is able to be directly transmitted to glass panel by through-hole, to reduce sun
The total reflection phenomenon of pole layer and glass panel contact surface, and light is divided into light spacer region and light by layer according to the difference of function
By area, the effect that wherein light passes through area is the briliancy of the adjusting each pixel light emission of Organic Light Emitting Diode, and light spacer region
Effect is to avoid passing through not share the same light to influence each other by the light in area, by the above-mentioned means, so as to improve light extraction efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram for the organic electroluminescent LED that the utility model first embodiment provides.
Fig. 2 is the schematic top plan view of the anode layer of organic electroluminescent LED shown in FIG. 1.
Fig. 3 is the structural schematic diagram for the organic electroluminescent LED that the utility model second embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Refering to fig. 1, it is the structural schematic diagram for the organic electroluminescent LED that the utility model embodiment provides.This implementation
The organic electroluminescent LED of example includes that the silicon carbide substrates 10 stacked gradually, light pass through layer 20, cathode layer 30, photosensitive resin
Layer 40, organic layer 50, anode layer 60 and glass panel 70.
The refractive index of anode layer 50 is more than the refractive index of glass panel 70.Organic layer 50 includes in matrix distribution in photosensitive tree
Separation layer 51 in lipid layer 40 and the luminescent layer 52 being arranged between multiple separation layers 51, the cross sectional shape of separation layer 51 are preferred
For isosceles trapezoid, recess forms curved surface downwards on the surface of luminescent layer 52, and curved surface can increase emergent light angle range, anode layer 60
The position of through-hole 61 with multiple perforations, through-hole 61 is corresponding with the position of luminescent layer 52.As shown in Fig. 2, the shape of through-hole 61
Shape is truncated cone, and the opening diameter of 61 lower section of through-hole is more than the opening diameter of top, and the hole shape of through-hole 61 is, for example,
The diameter of circle, through-hole 61 is preferably 20mm.
Light includes light spacer region 21 and light by area 22 by floor 20, and light spacer region 21 is in matrix distribution silicon carbide substrates 10
On, between light is formed in light spacer region 21 by area 22, the material of light spacer region 21 is barn door, and light is by the material in area 22
Light guide plate, light are corresponding with the position of luminescent layer 52 by area 22.
In the present embodiment, electronics is injected from cathode layer 30, and hole is injected from anode layer 60, and exciton is formed in luminescent layer 52
And the material emission of luminescent layer 52 is excited, the light excited from luminescent layer 52 passes through anode layer 60, then is emitted from glass panel 70.By
There is through-hole 61 in anode layer 60, can be able to directly enter by through-hole 61 by the wide part that the luminescent layer 52 is emitted
It is incident upon glass panel 70, thus the total reflection phenomenon of anode layer 60 and 70 contact surface of glass panel can be reduced.
Cathode layer 30 in the present embodiment may be used nitride material and be made, and anode layer 60 uses transparent electrode material
(being, for example, tin indium oxide) is made.
As shown in figure 3, in the present embodiment, luminescent layer 52 is as organic electroluminescent source, and luminescent layer 52 is by multiple nitrogen
Change gallium layer 521 and 522 intersecting of multiple aluminum gallium nitride layers forms, at least one of multiple gallium nitride layers 521 gallium nitride layer
It is more than gallium nitride layer 521 and aluminum gallium nitride layer inserted with stress-buffer layer 523, the lattice constant of stress-buffer layer 523 in 521
522 lattice constant.That is, multiple gallium nitride layers 521 and multiple aluminum gallium nitride layers 522 constitute multi-quantum pit structure, lead to
Lattice mismatch is crossed, the tensile stress effect of Quantum Well can be enhanced so that luminous efficiency is obviously improved, and then improving extraction efficiency.
In the present embodiment, in order to alleviate lattice mismatch caused by crystal defect problem, stress-buffer layer 523 and gallium nitride
Layer 521 forms coherent boundary, and the thickness of stress-buffer layer 523 is preferably 0.6nm.The material of stress-buffer layer 523 is preferably
GaInAs。
By the above-mentioned means, the organic electroluminescent LED of the utility model embodiment is passed through by being arranged on the anode layer
Logical through-hole is so that the part light being emitted by luminescent layer is able to be directly transmitted to glass panel by through-hole, to reduce anode
The total reflection phenomenon of layer and glass panel contact surface, and light is divided into light spacer region by layer according to the difference of function and light leads to
Area is crossed, the effect that wherein light passes through area is the briliancy of the adjusting each pixel light emission of Organic Light Emitting Diode, and the work of light spacer region
With being to avoid passing through not share the same light to influence each other by the light in area, so as to improve light extraction efficiency.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (7)
1. a kind of organic electroluminescent LED, which is characterized in that pass through layer, the moon including the silicon carbide substrates that stack gradually, light
The refractive index of pole layer, photosensitive resin layer, organic layer, anode layer and glass panel, the anode layer is more than the glass panel
Refractive index, the organic layer include in separation layer of the matrix distribution on the photosensitive resin layer and setting it is the multiple every
Luminescent layer between absciss layer, recess forms curved surface downwards on the surface of the luminescent layer, and the anode layer has the logical of multiple perforations
Hole, the position of the through-hole is corresponding with the position of the luminescent layer, and the light includes light spacer region and light by area by floor,
The smooth spacer region is in silicon carbide substrates described in matrix distribution, between the light is formed in the smooth spacer region by area, institute
The material for stating light spacer region is barn door, and the material that the light passes through area is light guide plate, and the light passes through area and the luminescent layer
Position it is corresponding.
2. organic electroluminescent LED according to claim 1, which is characterized in that the shape of the through-hole is the frustum of a cone
Shape, and the opening diameter below the through-hole is more than the opening diameter of top.
3. organic electroluminescent LED according to claim 1, which is characterized in that the luminescent layer is by multiple gallium nitride
Layer and multiple aluminum gallium nitride layer intersectings form, inserted with answering at least one of the multiple gallium nitride layer gallium nitride layer
Power buffer layer, the lattice constant of the stress-buffer layer are more than the lattice constant of the gallium nitride layer and aluminum gallium nitride layer.
4. organic electroluminescent LED according to claim 3, which is characterized in that the material of the stress-buffer layer is
GaInAs。
5. organic electroluminescent LED according to claim 3, which is characterized in that the thickness of the stress-buffer layer is
0.6nm。
6. according to claim 3 to 5 any one of them organic electroluminescent LED, which is characterized in that the stress buffer
Layer forms coherent boundary with the gallium nitride layer.
7. organic electroluminescent LED according to claim 1, which is characterized in that the cross sectional shape of the separation layer is
Isosceles trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721616304.6U CN207690830U (en) | 2017-11-28 | 2017-11-28 | A kind of organic electroluminescent LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721616304.6U CN207690830U (en) | 2017-11-28 | 2017-11-28 | A kind of organic electroluminescent LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207690830U true CN207690830U (en) | 2018-08-03 |
Family
ID=62999324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721616304.6U Expired - Fee Related CN207690830U (en) | 2017-11-28 | 2017-11-28 | A kind of organic electroluminescent LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207690830U (en) |
-
2017
- 2017-11-28 CN CN201721616304.6U patent/CN207690830U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181023 Address after: 528437 Torch Development Zone, Zhongshan City, Guangdong Province Patentee after: Zhongshan Times Electronics Co.,Ltd. Address before: 510000 B1B2, one, two, three and four floors of the podium building 231 and 233, science Avenue, Guangzhou, Guangdong. Patentee before: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Effective date of registration: 20181023 Address after: 510000 B1B2, one, two, three and four floors of the podium building 231 and 233, science Avenue, Guangzhou, Guangdong. Patentee after: BOAO ZONGHENG NETWORK TECHNOLOGY Co.,Ltd. Address before: 610041 Sichuan Chengdu high tech Zone No. 1 Tianfu 69 street 1 1 unit 16 level 1610 Patentee before: SICHUAN JIUDINGZHIYUAN INTELLECTUAL PROPERTY OPERATION Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180803 |