WO2015020358A1 - 발광소자 - Google Patents
발광소자 Download PDFInfo
- Publication number
- WO2015020358A1 WO2015020358A1 PCT/KR2014/007086 KR2014007086W WO2015020358A1 WO 2015020358 A1 WO2015020358 A1 WO 2015020358A1 KR 2014007086 W KR2014007086 W KR 2014007086W WO 2015020358 A1 WO2015020358 A1 WO 2015020358A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- light emitting
- electrode
- disposed
- semiconductor layer
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 192
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 239000002184 metal Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 36
- 229910052759 nickel Inorganic materials 0.000 claims description 31
- 229910052719 titanium Inorganic materials 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 229910052804 chromium Inorganic materials 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 229910052721 tungsten Inorganic materials 0.000 claims description 25
- 229910052725 zinc Inorganic materials 0.000 claims description 25
- 229910052720 vanadium Inorganic materials 0.000 claims description 23
- 229910052697 platinum Inorganic materials 0.000 claims description 17
- 239000000463 material Substances 0.000 description 32
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 24
- 239000011701 zinc Substances 0.000 description 24
- 239000000758 substrate Substances 0.000 description 22
- 229910052737 gold Inorganic materials 0.000 description 21
- 229910052750 molybdenum Inorganic materials 0.000 description 19
- 230000003287 optical effect Effects 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 238000002955 isolation Methods 0.000 description 14
- 239000011787 zinc oxide Substances 0.000 description 13
- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 12
- 239000002019 doping agent Substances 0.000 description 12
- 150000004767 nitrides Chemical class 0.000 description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 11
- 229910017083 AlN Inorganic materials 0.000 description 10
- 229910010413 TiO 2 Inorganic materials 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- SKRWFPLZQAAQSU-UHFFFAOYSA-N stibanylidynetin;hydrate Chemical compound O.[Sn].[Sb] SKRWFPLZQAAQSU-UHFFFAOYSA-N 0.000 description 8
- 229960001296 zinc oxide Drugs 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 229910002704 AlGaN Inorganic materials 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052733 gallium Inorganic materials 0.000 description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004417 polycarbonate Substances 0.000 description 5
- 229920000515 polycarbonate Polymers 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- -1 for example Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- HRHKULZDDYWVBE-UHFFFAOYSA-N indium;oxozinc;tin Chemical compound [In].[Sn].[Zn]=O HRHKULZDDYWVBE-UHFFFAOYSA-N 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 229910001887 tin oxide Inorganic materials 0.000 description 4
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 4
- 229910002601 GaN Inorganic materials 0.000 description 3
- 229910005540 GaP Inorganic materials 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910003465 moissanite Inorganic materials 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910017944 Ag—Cu Inorganic materials 0.000 description 2
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 2
- 229910002668 Pd-Cu Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910019897 RuOx Inorganic materials 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VRIVJOXICYMTAG-IYEMJOQQSA-L iron(ii) gluconate Chemical compound [Fe+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O VRIVJOXICYMTAG-IYEMJOQQSA-L 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
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
- H01L33/02—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 bodies
- H01L33/20—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 bodies with a particular shape, e.g. curved or truncated substrate
- H01L33/22—Roughened surfaces, e.g. at the interface between epitaxial layers
-
- 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
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
-
- 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
- H01L33/36—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 electrodes
-
- 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
- H01L33/36—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 electrodes
- H01L33/38—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 electrodes with a particular shape
- H01L33/385—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 electrodes with a particular shape the electrode extending at least partially onto a side surface of the semiconductor body
-
- 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
- H01L33/36—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 electrodes
- H01L33/40—Materials therefor
- H01L33/405—Reflective materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0016—Processes relating to electrodes
-
- 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
- H01L33/005—Processes
- H01L33/0093—Wafer bonding; Removal of the growth substrate
-
- 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
- H01L33/02—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 bodies
- H01L33/20—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 bodies with a particular shape, e.g. curved or truncated substrate
-
- 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
- H01L33/44—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 coatings, e.g. passivation layer or anti-reflective coating
Definitions
- Embodiments relate to a light emitting device, a light emitting device package, and a light unit.
- Light emitting diodes are widely used as one of light emitting devices. Light-emitting diodes use the properties of compound semiconductors to convert electrical signals into light, such as infrared, visible and ultraviolet light.
- light emitting devices As the light efficiency of light emitting devices increases, light emitting devices have been applied to various fields including display devices and lighting devices.
- the embodiment provides a light emitting device, a light emitting device package, and a light unit capable of improving light efficiency by improving light emitting area.
- the light emitting device may include a light emitting structure including a first conductive semiconductor layer, an active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the active layer; A channel layer disposed around a lower portion of the light emitting structure; A first electrode disposed on the channel layer; A second electrode disposed under the light emitting structure; A connection wiring electrically connecting the first electrode and the first conductive semiconductor layer; It includes.
- the light emitting device, the light emitting device package, and the light unit according to the embodiment have an advantage of improving light efficiency by improving the light emitting area.
- FIG. 1 is a view showing a light emitting device according to an embodiment.
- FIG. 2 is a plan view of the light emitting device illustrated in FIG. 1.
- 3 to 6 are views illustrating a light emitting device manufacturing method according to an embodiment.
- FIG. 7 to 10 are views showing another example of a light emitting device according to the embodiment.
- FIG. 11 is a view showing a light emitting device package according to the embodiment.
- FIG. 12 is a diagram illustrating a display device according to an exemplary embodiment.
- FIG. 13 is a diagram illustrating another example of a display device according to an exemplary embodiment.
- FIG. 14 is a view showing a lighting apparatus according to an embodiment.
- each layer (region), region, pattern, or structure is “on” or “under” the substrate, each layer (film), region, pad, or pattern.
- “up” and “under” include both “directly” or “indirectly” formed through another layer. do.
- the criteria for up / down or down / down each layer will be described with reference to the drawings.
- each layer may be exaggerated, omitted, or schematically illustrated for convenience and clarity of description.
- the size of each component does not necessarily reflect the actual size.
- FIG. 1 is a view showing a light emitting device according to the embodiment
- Figure 2 is a view showing a plan view of the light emitting device shown in FIG.
- the light emitting device according to the embodiment, the light emitting structure 10, the channel layer 30, the first electrode 81, the second electrode 82, the connection wiring 85 It may include.
- the light emitting structure 10 may include a first conductive semiconductor layer 11, an active layer 12, and a second conductive semiconductor layer 13.
- the active layer 12 may be disposed between the first conductive semiconductor layer 11 and the second conductive semiconductor layer 13.
- the active layer 12 may be disposed under the first conductive semiconductor layer 11, and the second conductive semiconductor layer 13 may be disposed under the active layer 12.
- the first conductivity type semiconductor layer 11 is formed of an n type semiconductor layer to which an n type dopant is added as a first conductivity type dopant
- the second conductivity type semiconductor layer 13 is a second conductivity type dopant.
- a p-type dopant may be formed as a p-type semiconductor layer.
- the first conductive semiconductor layer 11 may be formed of a p-type semiconductor layer
- the second conductive semiconductor layer 13 may be formed of an n-type semiconductor layer.
- the first conductive semiconductor layer 11 may include, for example, an n-type semiconductor layer.
- the first conductivity type semiconductor layer 11 may be implemented as a compound semiconductor.
- the first conductivity type semiconductor layer 11 may be implemented as, for example, a group II-VI compound semiconductor or a group III-V compound semiconductor.
- the first conductivity-type semiconductor layer 11 may be a semiconductor material having a composition formula of In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1). Can be implemented.
- the first conductivity type semiconductor layer 11 may be selected from, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, and the like.
- N-type dopants such as Se and Te may be doped.
- the active layer 12 In the active layer 12, electrons (or holes) injected through the first conductivity type semiconductor layer 11 and holes (or electrons) injected through the second conductivity type semiconductor layer 13 meet each other.
- the layer emits light due to a band gap difference of an energy band according to a material forming the active layer 12.
- the active layer 12 may be formed of any one of a single well structure, a multiple well structure, a quantum dot structure, or a quantum line structure, but is not limited thereto.
- the active layer 12 may be implemented with a compound semiconductor.
- the active layer 12 may be implemented as, for example, a group II-VI or group III-V compound semiconductor.
- the active layer 12 may be, for example, In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1 , 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1).
- the active layer 12 may be implemented by stacking a plurality of well layers and a plurality of barrier layers, for example, an InGaN well layer / GaN barrier layer. Can be implemented in cycles.
- the second conductive semiconductor layer 13 may be implemented with, for example, a p-type semiconductor layer.
- the second conductivity type semiconductor layer 13 may be implemented as a compound semiconductor.
- the second conductivity-type semiconductor layer 13 may be implemented by, for example, a group II-VI compound semiconductor or a group III-V compound semiconductor.
- the second conductivity type semiconductor layer 13 may be a semiconductor material having a composition formula of In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1). Can be implemented.
- the second conductive semiconductor layer 13 may be selected from, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, and the like, and may include Mg, Zn, Ca, P-type dopants such as Sr and Ba may be doped.
- the first conductive semiconductor layer 11 may include a p-type semiconductor layer
- the second conductive semiconductor layer 13 may include an n-type semiconductor layer.
- a semiconductor layer including an n-type or p-type semiconductor layer may be further formed below the second conductive semiconductor layer 13.
- the light emitting structure 10 may have at least one of np, pn, npn, and pnp junction structures.
- the doping concentrations of the impurities in the first conductive semiconductor layer 11 and the second conductive semiconductor layer 13 may be uniformly or non-uniformly formed. That is, the structure of the light emitting structure 10 may be formed in various ways, but is not limited thereto.
- a first conductivity type InGaN / GaN superlattice structure or an InGaN / InGaN superlattice structure may be formed between the first conductivity type semiconductor layer 11 and the active layer 12.
- a second conductive AlGaN layer may be formed between the second conductive semiconductor layer 13 and the active layer 12.
- the light emitting device may include a channel layer 30 disposed around the lower portion of the light emitting structure 10.
- an upper surface of the channel layer 30 may be coplanar with a lower surface of the light emitting structure 10.
- One end of the channel layer 30 may be disposed under the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed in contact with the lower surface of the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the second electrode 82.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the ohmic contact layer 15.
- the channel layer 30 may be formed of, for example, oxide or nitride.
- the channel layer 30 may include at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the channel layer 30 may also be referred to as an isolation layer.
- the channel layer 30 may perform a function of an etching stopper in an isolation process for the light emitting structure 10 later, and may prevent the electrical characteristics of the light emitting device from being degraded by the isolation process.
- the first electrode 81 may be disposed on the channel layer 30.
- the first electrode 81 may be disposed in direct contact with the channel layer 30.
- the first electrode 81 may be disposed around the lower portion of the light emitting structure 10.
- the first electrode 81 may be disposed to surround the light emitting structure 10.
- the first electrode 81 may be provided to have a smaller width than the width of the channel layer 30.
- the channel layer 30 may be arranged to have a width of 5 micrometers to 70 micrometers.
- the first electrode 81 may be arranged to have a width of, for example, 5 micrometers to 30 micrometers.
- the first electrode 81 may be electrically connected to the first conductivity type semiconductor layer 11.
- the first electrode 81 may be electrically connected to the first conductive semiconductor layer 11 through the connection wiring 85.
- the connection wiring 85 may electrically connect the first electrode 81 and the first conductive semiconductor layer 11.
- connection wiring 85 may be disposed on the first conductivity type semiconductor layer 11.
- the connection wiring 85 may be disposed on the first electrode 81.
- the connection wiring 85 may be disposed on the side of the light emitting structure 10.
- the connection wiring 85 may be provided in plurality. At least two connection wires 85 may be provided.
- the connection wiring 85 may be arranged in an appropriate number so that power applied from the first electrode 81 may be distributed and provided in the first conductive semiconductor layer 11.
- the connection wiring 85 may be formed with an appropriate number selected from 1 to 64 in consideration of the operating voltage.
- the first electrode 81 and the connection wiring 85 may include at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the first electrode 81 may not be disposed on the light emitting structure 10.
- a portion of the connection wiring 85 electrically connected to the first electrode 81 may be disposed on the light emitting structure 10. According to the embodiment, by minimizing the arrangement area of the metal layer disposed on the first conductive semiconductor layer 11, it is possible to improve the light emitting area provided from the light emitting structure 10 in the upper direction. Accordingly, the light emitting device according to the embodiment can improve the light efficiency.
- the light emitting device may include a bonding pad 90 electrically connected to the first electrode 81.
- the bonding pad 90 may be disposed on the light emitting structure 10.
- the bonding pad 90 may be disposed on the connection line 85.
- the bonding pad 90 may be disposed on the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed on one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a corner region of one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a diagonal direction of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may include, for example, at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the light emitting device may include an insulating layer 40 disposed between the connection wiring 85 and the light emitting structure 10.
- the insulating layer 40 may be disposed between the connection wiring 85 and the active layer 12.
- the insulating layer 40 may be disposed between the connection wiring 85 and the second conductive semiconductor layer 13.
- the insulating layer 40 may be formed of, for example, oxide or nitride.
- the insulating layer 40 may be at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the light emitting device may include a reflective layer 17 disposed under the light emitting structure 10.
- the reflective layer 17 may be electrically connected to the second conductivity type semiconductor layer 13.
- the reflective layer 17 may be disposed under the second conductive semiconductor layer 13.
- the light emitting device may include an ohmic contact layer 15 disposed between the reflective layer 17 and the second conductive semiconductor layer 13.
- the ohmic contact layer 15 may be in contact with the second conductivity type semiconductor layer 13.
- the ohmic contact layer 15 may be formed to be in ohmic contact with the light emitting structure 10.
- the ohmic contact layer 15 may include a region in ohmic contact with the light emitting structure 10.
- the reflective layer 17 may be electrically connected to the second conductivity type semiconductor layer 13. In addition, the reflective layer 17 may perform a function of increasing the amount of light extracted to the outside by reflecting light incident from the light emitting structure 10.
- the ohmic contact layer 15 may be formed of, for example, a transparent conductive oxide film.
- the ohmic contact layer 15 may include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), aluminum gallium zinc oxide (AGZO), indium zinc tin oxide (IZTO), and inaz Aluminum Zinc Oxide (IGZO), Indium Gallium Zinc Oxide (IGZO), Indium Gallium Tin Oxide (IGTO), Antimony Tin Oxide (ATO), Gallium Zinc Oxide (GZO), IZON (IZO Nitride), ZnO, IrOx, RuOx, NiO, Pt It may be formed of at least one material selected from Ag, Ti.
- the reflective layer 17 may be formed of a material having a high reflectance.
- the reflective layer 17 may be formed of a metal or an alloy including at least one of Ag, Ni, Al, Rh, Pd, Ir, Ru, Mg, Zn, Pt, Cu, Au, and Hf.
- the reflective layer 17 may be formed of indium-tin-oxide (ITO), indium-zinc-oxide (IZO), indium-zinc-tin-oxide (IZTO), and indium-aluminum-zinc- (AZO).
- Transmissive conductive materials such as Oxide), Indium-Gallium-Zinc-Oxide (IGZO), Indium-Gallium-Tin-Oxide (IGTO), Aluminum-Zinc-Oxide (AZO), and Antimony-Tin-Oxide (ATO) It can be formed in multiple layers.
- the reflective layer 17 may include at least one of Ag, Al, Ag-Pd-Cu alloy, or Ag-Cu alloy.
- the reflective layer 17 may be formed by alternately forming an Ag layer and a Ni layer, and may include a Ni / Ag / Ni, Ti layer, or Pt layer.
- the ohmic contact layer 15 may be formed under the reflective layer 17, and at least a part of the ohmic contact layer 15 may be in ohmic contact with the light emitting structure 10 through the reflective layer 17.
- the light emitting device may include a metal layer 50 disposed under the reflective layer 17.
- the metal layer 50 may include at least one of Au, Cu, Ni, Ti, Ti-W, Cr, W, Pt, V, Fe, and Mo materials.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 50, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the metal layer 50 may also function as a diffusion barrier layer.
- the bonding layer 60 and the conductive support member 70 may be disposed below the metal layer 50.
- the metal layer 50 may function to prevent the material included in the bonding layer 60 from diffusing in the direction of the reflective layer 17 in the process in which the bonding layer 60 is provided.
- the metal layer 50 may prevent a material such as tin (Sn) included in the bonding layer 60 from affecting the reflective layer 17.
- the bonding layer 60 includes a barrier metal or a bonding metal, and for example, at least one of Ti, Au, Sn, Ni, Cr, Ga, In, Bi, Cu, Ag, Nb, Pd, or Ta. It may include.
- the conductive support member 70 may support the light emitting structure 10 according to the embodiment and perform a heat radiation function.
- the bonding layer 60 may be implemented as a seed layer.
- the conductive support member 70 may be, for example, a semiconductor substrate in which Ti, Cr, Ni, Al, Pt, Au, W, Cu, Mo, Cu-W or impurities are implanted (eg, Si, Ge, GaN, GaAs). , ZnO, SiC, SiGe, etc.).
- the first electrode 81 may be implemented as an ohmic layer, an intermediate layer, and an upper layer.
- the ohmic layer may include a material selected from Cr, V, W, Ti, and Zn to implement ohmic contact.
- the intermediate layer may be implemented with a material selected from Ni, Cu, Al, and the like.
- the top layer may comprise Au, for example.
- the first electrode 81 may include at least one of Cr, V, W, Ti, Zn, Ni, Cu, Al, Au, and Mo.
- Roughness may be formed on an upper surface of the first conductive semiconductor layer 11. Accordingly, it is possible to increase the amount of light extracted in the upper direction in the region where the roughness is formed.
- the light emitting area may be enlarged. That is, according to the embodiment, since the light extracted to the upper surface of the light emitting structure 10 can be prevented from being absorbed by the first electrode 81, the light output can be improved.
- the first conductive semiconductor layer 11, the active layer 12, and the second conductive semiconductor layer 13 are formed on the substrate 5. can do.
- the first conductive semiconductor layer 11, the active layer 12, and the second conductive semiconductor layer 13 may be defined as a light emitting structure 10.
- the substrate 5 may be formed of, for example, at least one of sapphire substrate (Al 2 O 3 ), SiC, GaAs, GaN, ZnO, Si, GaP, InP, Ge, but is not limited thereto.
- a buffer layer may be further formed between the first conductivity type semiconductor layer 11 and the substrate 5.
- the first conductivity type semiconductor layer 11 is formed of an n type semiconductor layer to which an n type dopant is added as a first conductivity type dopant
- the second conductivity type semiconductor layer 13 is a second conductivity type. It may be formed of a p-type semiconductor layer to which a p-type dopant is added as a dopant.
- the first conductive semiconductor layer 11 may be formed of a p-type semiconductor layer
- the second conductive semiconductor layer 13 may be formed of an n-type semiconductor layer.
- the first conductive semiconductor layer 11 may include, for example, an n-type semiconductor layer.
- the first conductivity type semiconductor layer 11 may be formed of a semiconductor material having a composition formula of In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1). Can be.
- the first conductive semiconductor layer 11 may be selected from, for example, InAlGaN, GaN, AlGaN, AlInN, InGaN, AlN, InN, and the like, and doped with n-type dopants such as Si, Ge, Sn, Se, Te, or the like. Can be.
- the active layer 12 In the active layer 12, electrons (or holes) injected through the first conductive semiconductor layer 11 and holes (or electrons) injected through the second conductive semiconductor layer 13a meet each other. It is a layer that emits light due to a band gap difference of an energy band according to a material forming the active layer 12a.
- the active layer 12 may be formed of any one of a single well structure, a multiple well structure, a quantum dot structure, or a quantum line structure, but is not limited thereto.
- the active layer 12 may be formed of a semiconductor material having a composition formula of In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1).
- the active layer 12 may be formed by stacking a plurality of well layers and a plurality of barrier layers, for example, at intervals of an InGaN well layer / GaN barrier layer. Can be formed.
- the second conductive semiconductor layer 13 may be implemented with, for example, a p-type semiconductor layer.
- the second conductive semiconductor layer 13 may be formed of a semiconductor material having a composition formula of In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x + y ⁇ 1). Can be.
- the second conductive semiconductor layer 13 may be selected from, for example, InAlGaN, GaN, AlGaN, InGaN, AlInN, AlN, InN, and the like, and dopants such as Mg, Zn, Ca, Sr, and Ba may be doped. Can be.
- the first conductive semiconductor layer 11 may include a p-type semiconductor layer
- the second conductive semiconductor layer 13 may include an n-type semiconductor layer.
- a semiconductor layer including an n-type or p-type semiconductor layer may be further formed on the second conductivity-type semiconductor layer 13.
- the light emitting structure 10 may be np, pn, npn, or pnp junctions. It may have at least one of the structures.
- the doping concentrations of the impurities in the first conductive semiconductor layer 11 and the second conductive semiconductor layer 13 may be uniformly or non-uniformly formed. That is, the structure of the light emitting structure 10 may be formed in various ways, but is not limited thereto.
- a first conductivity type InGaN / GaN superlattice structure or an InGaN / InGaN superlattice structure may be formed between the first conductivity type semiconductor layer 11 and the active layer 12.
- a second conductive AlGaN layer may be formed between the second conductive semiconductor layer 13 and the active layer 12.
- the channel layer 30 may be formed on the light emitting structure 10.
- the channel layer 30 may be made of an insulating material.
- the channel layer 30 may be formed of oxide or nitride.
- the channel layer 30 may include at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. May be independently selected and formed.
- an ohmic contact layer 15 and a reflective layer 17 may be formed on the light emitting structure 10.
- the ohmic contact layer 15 may be disposed between the reflective layer 17 and the second conductive semiconductor layer 13.
- the ohmic contact layer 15 may be in contact with the second conductivity type semiconductor layer 13.
- the ohmic contact layer 15 may be formed to be in ohmic contact with the light emitting structure 10.
- the reflective layer 17 may be electrically connected to the second conductivity type semiconductor layer 13.
- the ohmic contact layer 15 may include a region in ohmic contact with the light emitting structure 10.
- the ohmic contact layer 15 may be formed of, for example, a transparent conductive oxide film.
- the ohmic contact layer 15 may include, for example, indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), aluminum gallium zinc oxide (AGZO), indium zinc tin oxide (IZTO), and inaz Aluminum Zinc Oxide (IGZO), Indium Gallium Zinc Oxide (IGZO), Indium Gallium Tin Oxide (IGTO), Antimony Tin Oxide (ATO), Gallium Zinc Oxide (GZO), IZON (IZO Nitride), ZnO, IrOx, RuOx, NiO, Pt It may be formed of at least one material selected from Ag, Ti.
- the reflective layer 17 may be formed of a material having a high reflectance.
- the reflective layer 17 may be formed of a metal or an alloy including at least one of Ag, Ni, Al, Rh, Pd, Ir, Ru, Mg, Zn, Pt, Cu, Au, and Hf.
- the reflective layer 17 may be formed of indium-tin-oxide (ITO), indium-zinc-oxide (IZO), indium-zinc-tin-oxide (IZTO), and indium-aluminum-zinc- (AZO).
- Transmissive conductive materials such as Oxide), Indium-Gallium-Zinc-Oxide (IGZO), Indium-Gallium-Tin-Oxide (IGTO), Aluminum-Zinc-Oxide (AZO), and Antimony-Tin-Oxide (ATO) It can be formed in multiple layers.
- the reflective layer 17 may include at least one of Ag, Al, Ag-Pd-Cu alloy, or Ag-Cu alloy.
- the reflective layer 17 may be formed by alternately forming an Ag layer and a Ni layer, and may include a Ni / Ag / Ni, Ti layer, or Pt layer.
- the ohmic contact layer 15 may be formed on the reflective layer 17, and at least a part of the ohmic contact layer 15 may be in ohmic contact with the light emitting structure 10 through the reflective layer 17.
- the metal layer 50, the bonding layer 60, and the conductive support member 70 may be formed on the reflective layer 17.
- the metal layer 50 may include at least one of Au, Cu, Ni, Ti, Ti-W, Cr, W, Pt, V, Fe, and Mo materials.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 35, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the metal layer 50 may also function as a diffusion barrier layer.
- the bonding layer 60 and the conductive support member 70 may be formed on the metal layer 50.
- the metal layer 50 may function to prevent the material included in the bonding layer 60 from diffusing in the direction of the reflective layer 17 in the process in which the bonding layer 60 is provided.
- the metal layer 50 may prevent a material such as tin (Sn) included in the bonding layer 60 from affecting the reflective layer 17.
- the bonding layer 60 includes a barrier metal or a bonding metal, and for example, at least one of Ti, Au, Sn, Ni, Cr, Ga, In, Bi, Cu, Ag, Nb, Pd, or Ta. It may include.
- the conductive support member 70 may support the light emitting structure 10 according to the embodiment and perform a heat radiation function.
- the bonding layer 60 may be implemented as a seed layer.
- the conductive support member 70 may be, for example, a semiconductor substrate in which Ti, Cr, Ni, Al, Pt, Au, W, Cu, Mo, Cu-W or impurities are implanted (eg, Si, Ge, GaN, GaAs). , ZnO, SiC, SiGe, etc.).
- the substrate 5 is removed from the first conductivity type semiconductor layer 11.
- the substrate 5 may be removed by a laser lift off (LLO) process.
- LLO is a process of irradiating a lower surface of the substrate 5 to peel the substrate 5 and the first conductive semiconductor layer 11 from each other.
- the side surface of the light emitting structure 10 may be etched by performing isolation etching, and a portion of the channel layer 30 may be exposed.
- the isolation etching may be performed by dry etching such as, for example, an inductively coupled plasma (ICP), but is not limited thereto.
- ICP inductively coupled plasma
- Roughness may be formed on an upper surface of the light emitting structure 10.
- a light extraction pattern may be provided on an upper surface of the light emitting structure 10.
- An uneven pattern may be provided on an upper surface of the light emitting structure 10.
- the light extraction pattern provided on the light emitting structure 10 may be formed by, for example, a PEC (Photo Electro Chemical) etching process. Accordingly, according to the embodiment, it is possible to increase the external light extraction effect.
- the insulating layer 40, the first electrode 81, the connection wiring 85, and the bonding pad 90 may be formed.
- the insulating layer 40 may be formed around the light emitting structure 10.
- the insulating layer 40 may be formed on the side surface of the light emitting structure 10.
- the insulating layer 40 may be formed of, for example, oxide or nitride.
- the insulating layer 40 may be at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the first electrode 81 may be formed on the channel layer 30.
- the first electrode 81 may be formed on the side surface of the insulating layer 40.
- the connection wiring 85 may be formed to electrically connect the first electrode 81 and the first conductive semiconductor layer 11. Subsequently, the bonding pads 90 electrically connected to the connection wires 85 may be formed.
- the first electrode 81 may be disposed on the channel layer 30.
- the first electrode 81 may be disposed in direct contact with the channel layer 30.
- the first electrode 81 may be disposed around the lower portion of the light emitting structure 10.
- the first electrode 81 may be disposed to surround the light emitting structure 10.
- the first electrode 81 may be provided to have a smaller width than the width of the channel layer 30.
- the channel layer 30 may be arranged to have a width of 5 micrometers to 70 micrometers.
- the first electrode 81 may be arranged to have a width of, for example, 5 micrometers to 30 micrometers.
- the first electrode 81 may be electrically connected to the first conductivity type semiconductor layer 11.
- the first electrode 81 may be electrically connected to the first conductive semiconductor layer 11 through the connection wiring 85.
- the connection wiring 85 may electrically connect the first electrode 81 and the first conductive semiconductor layer 11.
- connection wiring 85 may be disposed on the first conductivity type semiconductor layer 11.
- the connection wiring 85 may be disposed on the first electrode 81.
- the connection wiring 85 may be disposed on the side of the light emitting structure 10.
- the connection wiring 85 may be provided in plurality. At least two connection wires 85 may be provided.
- the connection wiring 85 may be arranged in an appropriate number so that power applied from the first electrode 81 may be distributed and provided in the first conductive semiconductor layer 11.
- the connection wiring 85 may be formed of any suitable number selected from 1 to 64.
- the first electrode 81 and the connection wiring 85 may include at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the first electrode 81 may not be disposed on the light emitting structure 10.
- a portion of the connection wiring 85 electrically connected to the first electrode 81 may be disposed on the light emitting structure 10. According to the embodiment, by minimizing the arrangement area of the metal layer disposed on the first conductive semiconductor layer 11, it is possible to improve the light emitting area provided from the light emitting structure 10 in the upper direction. Accordingly, the light emitting device according to the embodiment can improve the light efficiency.
- the light emitting device may include a bonding pad 90 electrically connected to the first electrode 81.
- the bonding pad 90 may be disposed on the light emitting structure 10.
- the bonding pad 90 may be disposed on the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed on one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a corner region of one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a diagonal direction of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may include, for example, at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 50, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the first electrode 81 may be implemented as an ohmic layer, an intermediate layer, and an upper layer.
- the ohmic layer may include a material selected from Cr, V, W, Ti, and Zn to implement ohmic contact.
- the intermediate layer may be implemented with a material selected from Ni, Cu, Al, and the like.
- the top layer may comprise Au, for example.
- the first electrode 81 may include at least one of Cr, V, W, Ti, Zn, Ni, Cu, Al, Au, and Mo.
- the light emitting area may be enlarged. That is, according to the embodiment, since the light extracted to the upper surface of the light emitting structure 10 can be prevented from being absorbed by the first electrode 81, the light output can be improved.
- FIGS. 7 and 8 are views showing another example of a light emitting device according to the embodiment.
- contents overlapping with those described with reference to FIGS. 1 to 6 may be briefly described or omitted.
- the light emitting device includes a light emitting structure 10, a channel layer 30, a first electrode 81, a second electrode 82, and a connection wiring 85. It may include.
- the light emitting device may include a channel layer 30 disposed around the lower portion of the light emitting structure 10.
- an upper surface of the channel layer 30 may be coplanar with a lower surface of the light emitting structure 10.
- One end of the channel layer 30 may be disposed under the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed in contact with the lower surface of the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the second electrode 82.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the ohmic contact layer 15.
- the channel layer 30 may be formed of, for example, oxide or nitride.
- the channel layer 30 may include at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the channel layer 30 may also be referred to as an isolation layer.
- the channel layer 30 may perform a function of an etching stopper in an isolation process for the light emitting structure 10 later, and may prevent the electrical characteristics of the light emitting device from being degraded by the isolation process.
- the first electrode 81 may be disposed on the channel layer 30.
- the first electrode 81 may be disposed in direct contact with the channel layer 30.
- the first electrode 81 may be disposed around the lower portion of the light emitting structure 10.
- the first electrode 81 may be disposed to surround the light emitting structure 10.
- the first electrode 81 may be provided to have a smaller width than the width of the channel layer 30.
- the channel layer 30 may be arranged to have a width of 5 micrometers to 70 micrometers.
- the first electrode 81 may be arranged to have a width of, for example, 5 micrometers to 30 micrometers.
- the first electrode 81 may be electrically connected to the first conductivity type semiconductor layer 11.
- the first electrode 81 may be electrically connected to the first conductive semiconductor layer 11 through the connection wiring 85.
- the connection wiring 85 may electrically connect the first electrode 81 and the first conductive semiconductor layer 11.
- connection wiring 85 may be disposed on the first conductivity type semiconductor layer 11.
- the connection wiring 85 may be disposed on the first electrode 81.
- the connection wiring 85 may be disposed on the side of the light emitting structure 10.
- the connection wiring 85 may be provided in plurality. At least two connection wires 85 may be provided.
- the connection wiring 85 may be arranged in an appropriate number so that power applied from the first electrode 81 may be distributed and provided in the first conductive semiconductor layer 11.
- the connection wiring 85 may be formed of any suitable number selected from 1 to 64.
- the first electrode 81 and the connection wiring 85 may include at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the light emitting device may include a central connection wiring 87.
- the central connection line 87 may be disposed on an upper surface of the light emitting structure 10.
- the center connection line 87 may be electrically connected to the first electrode 81 so that power can be effectively spread to the first conductive semiconductor layer 11.
- the first electrode 81 may not be disposed on the light emitting structure 10.
- a portion of the connection wiring 85 electrically connected to the first electrode 81 may be disposed on the light emitting structure 10. According to the embodiment, by minimizing the arrangement area of the metal layer disposed on the first conductive semiconductor layer 11, it is possible to improve the light emitting area provided from the light emitting structure 10 in the upper direction. Accordingly, the light emitting device according to the embodiment can improve the light efficiency.
- the light emitting device may include a bonding pad 90 electrically connected to the first electrode 81.
- the bonding pad 90 may be disposed on the first electrode 81.
- the bonding pad 90 may be disposed on the channel layer 30.
- the bonding pad 90 may be disposed around the light emitting structure 10.
- the bonding pad 90 may be disposed around a lower portion of the light emitting structure 10.
- the bonding pad 90 may be disposed on a side surface of the light emitting structure 10.
- the bonding pad 90 may include, for example, at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the light emitting device may include an insulating layer 40 disposed between the connection wiring 85 and the light emitting structure 10.
- the insulating layer 40 may be disposed between the connection wiring 85 and the active layer 12.
- the insulating layer 40 may be disposed between the connection wiring 85 and the second conductive semiconductor layer 13.
- the insulating layer 40 may be formed of, for example, oxide or nitride.
- the insulating layer 40 may be at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 50, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the first electrode 81 may be implemented as an ohmic layer, an intermediate layer, and an upper layer.
- the ohmic layer may include a material selected from Cr, V, W, Ti, and Zn to implement ohmic contact.
- the intermediate layer may be implemented with a material selected from Ni, Cu, Al, and the like.
- the top layer may comprise Au, for example.
- the first electrode 81 may include at least one of Cr, V, W, Ti, Zn, Ni, Cu, Al, Au, and Mo.
- the light emitting area may be enlarged. That is, according to the embodiment, since light extracted to the upper surface of the light emitting structure 10 may be prevented from being absorbed by the first electrode 81 and the bonding pad 90, the light output may be improved.
- FIG. 9 is a view showing another example of a light emitting device according to the embodiment.
- the descriptions overlapping with those described with reference to FIGS. 1 to 6 may be briefly described or omitted.
- the light emitting device may include a light emitting structure 10, a channel layer 30, a first electrode 81, a second electrode 82, and a connection wiring 85.
- a light emitting structure 10 may include a light emitting structure 10, a channel layer 30, a first electrode 81, a second electrode 82, and a connection wiring 85.
- the light emitting device may include a channel layer 30 disposed around the lower portion of the light emitting structure 10.
- an upper surface of the channel layer 30 may be coplanar with a lower surface of the light emitting structure 10.
- One end of the channel layer 30 may be disposed under the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed in contact with the lower surface of the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the second electrode 82.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the ohmic contact layer 15.
- the channel layer 30 may be formed of, for example, oxide or nitride.
- the channel layer 30 may include at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the channel layer 30 may also be referred to as an isolation layer.
- the channel layer 30 may perform a function of an etching stopper in an isolation process for the light emitting structure 10 later, and may prevent the electrical characteristics of the light emitting device from being degraded by the isolation process.
- the first electrode 81 may be disposed on the channel layer 30.
- the first electrode 81 may be disposed in direct contact with the channel layer 30.
- the first electrode 81 may be disposed around the lower portion of the light emitting structure 10.
- the first electrode 81 may be disposed to surround the light emitting structure 10.
- the first electrode 81 may be provided to have a smaller width than the width of the channel layer 30.
- the channel layer 30 may be arranged to have a width of 5 micrometers to 70 micrometers.
- the first electrode 81 may be arranged to have a width of, for example, 5 micrometers to 30 micrometers.
- the first electrode 81 may be electrically connected to the first conductivity type semiconductor layer 11.
- the first electrode 81 may be electrically connected to the first conductive semiconductor layer 11 through the connection wiring 85.
- the connection wiring 85 may electrically connect the first electrode 81 and the first conductive semiconductor layer 11.
- connection wiring 85 may be disposed on the first conductivity type semiconductor layer 11.
- the connection wiring 85 may be disposed on the first electrode 81.
- the connection wiring 85 may be disposed on the side of the light emitting structure 10.
- the connection wiring 85 may be disposed in contact with the side surface of the light emitting structure 10.
- the connection wiring 85 may be in contact with a side surface of the first conductivity type semiconductor layer 11.
- connection wiring 85 may be provided in plurality. At least two connection wires 85 may be provided. The connection wiring 85 may be arranged in an appropriate number so that power applied from the first electrode 81 may be distributed and provided in the first conductive semiconductor layer 11. By way of example, the connection wiring 85 may be formed of any suitable number selected from 1 to 64.
- the first electrode 81 and the connection wiring 85 may include at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the first electrode 81 may not be disposed on the light emitting structure 10.
- a portion of the connection wiring 85 electrically connected to the first electrode 81 may be disposed on the light emitting structure 10. According to the embodiment, by minimizing the arrangement area of the metal layer disposed on the first conductive semiconductor layer 11, it is possible to improve the light emitting area provided from the light emitting structure 10 in the upper direction. Accordingly, the light emitting device according to the embodiment can improve the light efficiency.
- the light emitting device may include a bonding pad 90 electrically connected to the first electrode 81.
- the bonding pad 90 may be disposed on the light emitting structure 10.
- the bonding pad 90 may be disposed on the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed on one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a corner region of one side of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may be disposed in a diagonal direction of the first conductivity type semiconductor layer 11.
- the bonding pad 90 may include, for example, at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the light emitting device may include an insulating layer 40 disposed between the connection wiring 85 and the light emitting structure 10.
- the insulating layer 40 may be disposed between the connection wiring 85 and the active layer 12.
- the insulating layer 40 may be disposed between the connection wiring 85 and the second conductive semiconductor layer 13.
- the insulating layer 40 may be formed of, for example, oxide or nitride.
- the insulating layer 40 may be at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 50, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the first electrode 81 may be implemented as an ohmic layer, an intermediate layer, and an upper layer.
- the ohmic layer may include a material selected from Cr, V, W, Ti, and Zn to implement ohmic contact.
- the intermediate layer may be implemented with a material selected from Ni, Cu, Al, and the like.
- the top layer may comprise Au, for example.
- the first electrode 81 may include at least one of Cr, V, W, Ti, Zn, Ni, Cu, Al, Au, and Mo.
- the light emitting area may be enlarged. That is, according to the embodiment, since the light extracted to the upper surface of the light emitting structure 10 can be prevented from being absorbed by the first electrode 81, the light output can be improved.
- FIG. 10 is a view showing another example of a light emitting device according to the embodiment.
- the descriptions overlapping with those described with reference to FIGS. 1 to 6 may be briefly described or omitted.
- the light emitting device may include a light emitting structure 10, a channel layer 30, a first electrode 81, a second electrode 82, and a connection wiring 85.
- a light emitting structure 10 may include a light emitting structure 10, a channel layer 30, a first electrode 81, a second electrode 82, and a connection wiring 85.
- the light emitting device may include a channel layer 30 disposed around the lower portion of the light emitting structure 10.
- the upper surface of the channel layer 30 may be disposed higher than the upper surface of the active layer 12.
- the channel layer 30 may be disposed to surround the circumference of the active layer 12.
- the channel layer 30 may be disposed to surround the circumference of the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed under the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed in contact with the lower surface of the second conductivity type semiconductor layer 13.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the second electrode 82.
- One end of the channel layer 30 may be disposed between the second conductive semiconductor layer 13 and the ohmic contact layer 15.
- the channel layer 30 may be formed of, for example, oxide or nitride.
- the channel layer 30 may include at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the channel layer 30 may also be referred to as an isolation layer.
- the channel layer 30 may perform a function of an etching stopper in an isolation process for the light emitting structure 10 later, and may prevent the electrical characteristics of the light emitting device from being degraded by the isolation process.
- the first electrode 81 may be disposed on the channel layer 30.
- the first electrode 81 may be disposed in direct contact with the channel layer 30.
- the first electrode 81 may be disposed around the light emitting structure 10.
- the first electrode 81 may be disposed to surround the light emitting structure 10.
- the first electrode 81 may be provided to have a smaller width than the width of the channel layer 30.
- the channel layer 30 may be arranged to have a width of 5 micrometers to 70 micrometers.
- the first electrode 81 may be arranged to have a width of, for example, 5 micrometers to 30 micrometers.
- the first electrode 81 may be electrically connected to the first conductivity type semiconductor layer 11.
- the first electrode 81 may be electrically connected to the first conductive semiconductor layer 11 through the connection wiring 85.
- the connection wiring 85 may electrically connect the first electrode 81 and the first conductive semiconductor layer 11.
- connection wiring 85 may be disposed on the first conductivity type semiconductor layer 11.
- the connection wiring 85 may be disposed on the first electrode 81.
- the connection wiring 85 may be disposed on the side of the light emitting structure 10.
- the connection wiring 85 may be disposed in contact with the side surface of the light emitting structure 10.
- the connection wiring 85 may be in contact with a side surface of the first conductivity type semiconductor layer 11.
- the connection wiring 85 may contact only the side surface of the first conductivity type semiconductor layer 11 and may not be disposed on the upper surface of the first conductivity type semiconductor layer 11.
- connection wiring 85 may be provided in plurality. At least two connection wires 85 may be provided. The connection wiring 85 may be arranged in an appropriate number so that power applied from the first electrode 81 may be distributed and provided in the first conductive semiconductor layer 11. By way of example, the connection wiring 85 may be formed of any suitable number selected from 1 to 64.
- the first electrode 81 and the connection wiring 85 may include at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the first electrode 81 may not be disposed on the light emitting structure 10.
- a portion of the connection wiring 85 electrically connected to the first electrode 81 may be disposed on the light emitting structure 10. According to the embodiment, by minimizing the arrangement area of the metal layer disposed on the first conductive semiconductor layer 11, it is possible to improve the light emitting area provided from the light emitting structure 10 in the upper direction. Accordingly, the light emitting device according to the embodiment can improve the light efficiency.
- the light emitting device may include a bonding pad 90 electrically connected to the first electrode 81.
- the bonding pad 90 may be disposed on the first electrode 81.
- the bonding pad 90 may be disposed on the channel layer 30.
- the bonding pad 90 may be disposed around the light emitting structure 10.
- the bonding pad 90 may be disposed on a side surface of the light emitting structure 10.
- the bonding pad 90 may include, for example, at least one of Cr, V, W, Ti, Zn, Ni, Pt, Cu, Al, Au, and Mo.
- the light emitting device may include an insulating layer 40 disposed between the connection wiring 85 and the light emitting structure 10.
- the insulating layer 40 may be disposed between the connection wiring 85 and the active layer 12.
- the insulating layer 40 may be disposed between the connection wiring 85 and the second conductive semiconductor layer 13.
- the insulating layer 40 may be formed of, for example, oxide or nitride.
- the insulating layer 40 may be at least one of Si0 2 , Si x O y , Si 3 N 4 , Si x N y , SiO x N y , Al 2 O 3 , TiO 2 , AlN, and the like. Can be selected and formed.
- the second electrode 82 may include at least one of the reflective layer 17, the ohmic contact layer 15, and the metal layer 50.
- the second electrode 82 may include all of the reflective layer 17, the metal layer 50, and the ohmic contact layer 15, and may include one selected layer or two selected layers. have.
- the first electrode 81 may be implemented as an ohmic layer, an intermediate layer, and an upper layer.
- the ohmic layer may include a material selected from Cr, V, W, Ti, and Zn to implement ohmic contact.
- the intermediate layer may be implemented with a material selected from Ni, Cu, Al, and the like.
- the top layer may comprise Au, for example.
- the first electrode 81 may include at least one of Cr, V, W, Ti, Zn, Ni, Cu, Al, Au, and Mo.
- the light emitting area may be enlarged. That is, according to the embodiment, since light extracted to the upper surface of the light emitting structure 10 may be prevented from being absorbed by the first electrode 81 and the bonding pad 90, the light output may be improved.
- FIG. 11 is a view showing a light emitting device package to which the light emitting device according to the embodiment is applied.
- the light emitting device package includes a body 120, a first lead electrode 131 and a second lead electrode 132 disposed on the body 120, and the body 120.
- the light emitting device 100 according to the embodiment which is provided to and electrically connected to the first lead electrode 131 and the second lead electrode 132, and the molding member 140 surrounding the light emitting device 100. It may include.
- the body 120 may include a silicon material, a synthetic resin material, or a metal material, and an inclined surface may be formed around the light emitting device 100.
- the first lead electrode 131 and the second lead electrode 132 are electrically separated from each other, and provide power to the light emitting device 100.
- the first lead electrode 131 and the second lead electrode 132 may increase light efficiency by reflecting light generated from the light emitting device 100, and heat generated from the light emitting device 100. It may also play a role in discharging it to the outside.
- the light emitting device 100 may be disposed on the body 120 or on the first lead electrode 131 or the second lead electrode 132.
- the light emitting device 100 may be electrically connected to the first lead electrode 131 and the second lead electrode 132 by any one of a wire method, a flip chip method, and a die bonding method.
- the molding member 140 may surround the light emitting device 100 to protect the light emitting device 100.
- the molding member 140 may include a phosphor to change the wavelength of light emitted from the light emitting device 100.
- a plurality of light emitting devices or light emitting device packages may be arranged on a substrate, and an optical member such as a lens, a light guide plate, a prism sheet, and a diffusion sheet may be disposed on an optical path of the light emitting device package.
- the light emitting device package, the substrate, and the optical member may function as a light unit.
- the light unit may be implemented in a top view or a side view type, and may be provided in a display device such as a portable terminal and a notebook computer, or may be variously applied to an illumination device and a pointing device.
- Yet another embodiment may be implemented as a lighting device including the light emitting device or the light emitting device package described in the above embodiments.
- the lighting device may include a lamp, a street lamp, a signboard, a headlamp.
- the light emitting device may be applied to the light unit.
- the light unit may include a structure in which a plurality of light emitting elements are arranged, and may include the display device illustrated in FIGS. 12 and 13 and the illumination device illustrated in FIG. 14.
- the display device 1000 includes a light guide plate 1041, a light emitting module 1031 that provides light to the light guide plate 1041, and a reflective member 1022 under the light guide plate 1041. ), An optical sheet 1051 on the light guide plate 1041, a display panel 1061, a light guide plate 1041, a light emitting module 1031, and a reflective member 1022 on the optical sheet 1051.
- the bottom cover 1011 may be included, but is not limited thereto.
- the bottom cover 1011, the reflective sheet 1022, the light guide plate 1041, and the optical sheet 1051 may be defined as a light unit 1050.
- the light guide plate 1041 diffuses light to serve as a surface light source.
- the light guide plate 1041 is made of a transparent material, for example, acrylic resin-based such as polymethyl metaacrylate (PMMA), polyethylene terephthlate (PET), polycarbonate (PC), cycloolefin copolymer (COC), and polyethylene naphthalate (PEN). It may include one of the resins.
- PMMA polymethyl metaacrylate
- PET polyethylene terephthlate
- PC polycarbonate
- COC cycloolefin copolymer
- PEN polyethylene naphthalate
- the light emitting module 1031 provides light to at least one side of the light guide plate 1041, and ultimately serves as a light source of the display device.
- At least one light emitting module 1031 may be provided, and may provide light directly or indirectly at one side of the light guide plate 1041.
- the light emitting module 1031 may include a substrate 1033 and a light emitting device or a light emitting device package 200 according to the embodiment described above.
- the light emitting device package 200 may be arranged on the substrate 1033 at predetermined intervals.
- the substrate 1033 may be a printed circuit board (PCB) including a circuit pattern.
- the substrate 1033 may include not only a general PCB but also a metal core PCB (MCPCB, Metal Core PCB), a flexible PCB (FPCB, Flexible PCB) and the like, but is not limited thereto.
- MCPCB Metal Core PCB
- FPCB Flexible PCB
- the substrate 1033 may be removed.
- a part of the heat dissipation plate may contact the upper surface of the bottom cover 1011.
- the plurality of light emitting device packages 200 may be mounted such that an emission surface from which light is emitted is spaced apart from the light guide plate 1041 by a predetermined distance, but is not limited thereto.
- the light emitting device package 200 may directly or indirectly provide light to a light incident portion that is one side of the light guide plate 1041, but is not limited thereto.
- the reflective member 1022 may be disposed under the light guide plate 1041.
- the reflective member 1022 may improve the luminance of the light unit 1050 by reflecting light incident to the lower surface of the light guide plate 1041 and pointing upward.
- the reflective member 1022 may be formed of, for example, PET, PC, or PVC resin, but is not limited thereto.
- the reflective member 1022 may be an upper surface of the bottom cover 1011, but is not limited thereto.
- the bottom cover 1011 may accommodate the light guide plate 1041, the light emitting module 1031, the reflective member 1022, and the like. To this end, the bottom cover 1011 may be provided with an accommodating part 1012 having a box shape having an upper surface opened thereto, but is not limited thereto. The bottom cover 1011 may be combined with the top cover, but is not limited thereto.
- the bottom cover 1011 may be formed of a metal material or a resin material, and may be manufactured using a process such as press molding or extrusion molding.
- the bottom cover 1011 may include a metal or non-metal material having good thermal conductivity, but is not limited thereto.
- the display panel 1061 is, for example, an LCD panel and includes a first and second substrates of transparent materials facing each other, and a liquid crystal layer interposed between the first and second substrates.
- a polarizer may be attached to at least one surface of the display panel 1061, but the polarizer is not limited thereto.
- the display panel 1061 displays information by light passing through the optical sheet 1051.
- the display device 1000 may be applied to various portable terminals, monitors of notebook computers, monitors of laptop computers, televisions, and the like.
- the optical sheet 1051 is disposed between the display panel 1061 and the light guide plate 1041 and includes at least one light transmissive sheet.
- the optical sheet 1051 may include at least one of a sheet such as, for example, a diffusion sheet, a horizontal and vertical prism sheet, and a brightness enhancement sheet.
- the diffusion sheet diffuses the incident light
- the horizontal and / or vertical prism sheet focuses the incident light into the display area
- the brightness enhancement sheet reuses the lost light to improve the brightness.
- a protective sheet may be disposed on the display panel 1061, but is not limited thereto.
- the light guide plate 1041 and the optical sheet 1051 may be included as an optical member on the optical path of the light emitting module 1031, but are not limited thereto.
- FIG. 13 is a diagram illustrating another example of a display device according to an exemplary embodiment.
- the display device 1100 includes a bottom cover 1152, a substrate 1020 on which the light emitting device 100 disclosed above is arrayed, an optical member 1154, and a display panel 1155.
- the substrate 1020 and the light emitting device package 200 may be defined as a light emitting module 1060.
- the bottom cover 1152 may include an accommodating part 1153, but is not limited thereto.
- the optical member 1154 may include at least one of a lens, a light guide plate, a diffusion sheet, horizontal and vertical prism sheets, and a brightness enhancement sheet.
- the light guide plate may be made of a PC material or a poly methy methacrylate (PMMA) material, and the light guide plate may be removed.
- the diffusion sheet diffuses the incident light
- the horizontal and vertical prism sheets focus the incident light onto the display area
- the brightness enhancement sheet reuses the lost light to improve the brightness.
- the optical member 1154 is disposed on the light emitting module 1060, and performs surface light source, diffusion, condensing, etc. of the light emitted from the light emitting module 1060.
- FIG. 14 is a view showing a lighting apparatus according to an embodiment.
- the lighting apparatus may include a cover 2100, a light source module 2200, a radiator 2400, a power supply 2600, an inner case 2700, and a socket 2800. Can be.
- the lighting apparatus according to the embodiment may further include any one or more of the member 2300 and the holder 2500.
- the light source module 2200 may include a light emitting device package according to an embodiment.
- the cover 2100 may have a shape of a bulb or hemisphere, may be hollow, and may be provided in an open shape.
- the cover 2100 may be optically coupled to the light source module 2200.
- the cover 2100 may diffuse, scatter or excite the light provided from the light source module 2200.
- the cover 2100 may be a kind of optical member.
- the cover 2100 may be coupled to the heat sink 2400.
- the cover 2100 may have a coupling part coupled to the heat sink 2400.
- An inner surface of the cover 2100 may be coated with a milky paint.
- the milky paint may include a diffuser to diffuse light.
- the surface roughness of the inner surface of the cover 2100 may be greater than the surface roughness of the outer surface of the cover 2100. This is for the light from the light source module 2200 to be sufficiently scattered and diffused to be emitted to the outside.
- the cover 2100 may be made of glass, plastic, polypropylene (PP), polyethylene (PE), polycarbonate (PC), or the like.
- polycarbonate is excellent in light resistance, heat resistance, and strength.
- the cover 2100 may be transparent and opaque so that the light source module 2200 is visible from the outside.
- the cover 2100 may be formed through blow molding.
- the light source module 2200 may be disposed on one surface of the heat sink 2400. Thus, heat from the light source module 2200 is conducted to the heat sink 2400.
- the light source module 2200 may include a light source unit 2210, a connection plate 2230, and a connector 2250.
- the member 2300 is disposed on an upper surface of the heat dissipator 2400, and has a plurality of light source parts 2210 and guide grooves 2310 into which the connector 2250 is inserted.
- the guide groove 2310 corresponds to the board and the connector 2250 of the light source unit 2210.
- the surface of the member 2300 may be coated or coated with a light reflective material.
- the surface of the member 2300 may be coated or coated with a white paint.
- the member 2300 is reflected on the inner surface of the cover 2100 to reflect the light returned to the light source module 2200 side again toward the cover 2100. Therefore, it is possible to improve the light efficiency of the lighting apparatus according to the embodiment.
- the member 2300 may be made of an insulating material, for example.
- the connection plate 2230 of the light source module 2200 may include an electrically conductive material. Therefore, electrical contact may be made between the radiator 2400 and the connection plate 2230.
- the member 2300 may be formed of an insulating material to block an electrical short between the connection plate 2230 and the radiator 2400.
- the radiator 2400 receives heat from the light source module 2200 and heat from the power supply unit 2600 to radiate heat.
- the holder 2500 may block the accommodating groove 2719 of the insulating portion 2710 of the inner case 2700. Therefore, the power supply unit 2600 accommodated in the insulating unit 2710 of the inner case 2700 is sealed.
- the holder 2500 has a guide protrusion 2510.
- the guide protrusion 2510 has a hole through which the protrusion 2610 of the power supply unit 2600 passes.
- the power supply unit 2600 processes or converts an electrical signal provided from the outside to provide the light source module 2200.
- the power supply unit 2600 is accommodated in the accommodating groove 2725 of the inner case 2700, and is sealed in the inner case 2700 by the holder 2500.
- the power supply unit 2600 may include a protrusion 2610, a guide unit 2630, a base 2650, and an extension unit 2670.
- the guide part 2630 has a shape protruding outward from one side of the base 2650.
- the guide part 2630 may be inserted into the holder 2500.
- a plurality of parts may be disposed on one surface of the base 2650.
- the plurality of components may include, for example, a DC converter for converting AC power provided from an external power source into DC power, a driving chip for controlling the driving of the light source module 2200, and an ESD for protecting the light source module 2200. (ElectroStatic discharge) protection element and the like, but may not be limited thereto.
- the extension part 2670 has a shape protruding outward from the other side of the base 2650.
- the extension part 2670 is inserted into the connection part 2750 of the inner case 2700 and receives an electrical signal from the outside.
- the extension part 2670 may be provided to be equal to or smaller than the width of the connection part 2750 of the inner case 2700.
- Each end of the "+ wire” and the “-wire” may be electrically connected to the extension 2670, and the other end of the "+ wire” and the “-wire” may be electrically connected to the socket 2800. .
- the inner case 2700 may include a molding unit together with the power supply unit 2600 therein.
- the molding part is a part where the molding liquid is hardened, so that the power supply part 2600 can be fixed inside the inner case 2700.
- the embodiment can provide a light emitting device, a light emitting device package, and a light unit which can improve light emitting area to improve light efficiency.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
Abstract
Description
Claims (20)
- 제1 도전형 반도체층, 상기 제1 도전형 반도체층 아래에 활성층, 상기 활성층 아래에 제2 도전형 반도체층을 포함하는 발광구조물;상기 발광구조물 하부 둘레에 배치된 채널층;상기 채널층 위에 배치된 제1 전극;상기 발광구조물 아래에 배치된 제2 전극;상기 제1 전극과 상기 제1 도전형 반도체층을 전기적으로 연결시키는 연결배선;을 포함하는 발광소자.
- 제1항에 있어서,상기 제1 전극은 상기 발광구조물 하부 둘레에 배치된 발광소자.
- 제1항에 있어서,상기 연결배선은 상기 제1 도전형 반도체층 위에 배치된 발광소자.
- 제1항에 있어서,상기 연결배선은 상기 제1 도전형 반도체층의 측면에 접촉된 발광소자.
- 제1항에 있어서,상기 제1 전극에 전기적으로 연결된 본딩 패드를 포함하는 발광소자.
- 제5항에 있어서,상기 본딩 패드는 상기 제1 도전형 반도체층 위에 배치된 발광소자.
- 제5항에 있어서,상기 본딩 패드는 상기 채널층 위에 배치된 발광소자.
- 제5항에 있어서,상기 본딩 패드는 상기 발광구조물 하부 둘레에 배치된 발광소자.
- 제1항에 있어서,상기 연결배선은 적어도 2 개 이상으로 제공된 발광소자.
- 제1항에 있어서,상기 연결배선과 상기 활성층 사이에 배치된 절연층을 포함하는 발광소자.
- 제1항에 있어서,상기 제2 전극은 오믹접촉층, 반사층, 금속층 중에서 적어도 하나를 포함하는 발광소자.
- 제1항에 있어서,상기 채널층의 상부 면은 상기 활성층의 상부 면에 비하여 더 높게 배치된 발광소자.
- 제1항에 있어서,상기 연결배선은 Cr, V,W, Ti, Zn, Ni, Pt, Cu, Al, Au, Mo 중 적어도 하나인 발광소자.
- 제1 도전형 반도체층, 상기 제1 도전형 반도체층 아래에 활성층, 상기 활성층 아래에 제2 도전형 반도체층을 포함하는 발광구조물;상기 발광구조물 하부 둘레에 배치된 채널층;상기 채널층 위에 배치된 제1 전극;상기 발광구조물 아래에 배치된 제2 전극;상기 제1 전극과 상기 제1 도전형 반도체층을 전기적으로 연결시키는 연결배서;을 포함하고,상기 제1전극의 폭은 상기 채널층의 폭보다 좁은 발광소자.
- 제14항에 있어서,상기 제1전극의 폭은 5um 내지 30um인 발광소자.
- 제14항에 있어서,상기 채널층의 폭은 5um 내지 70um인 발광소자.
- 제1 도전형 반도체층, 상기 제1 도전형 반도체층 아래에 활성층, 상기 활성층 아래에 제2 도전형 반도체층을 포함하는 발광구조물;상기 발광구조물 하부 둘레에 배치된 채널층;상기 채널층 위에 배치된 절연층;상기 채널층 위에 배치된 제1 전극;상기 발광구조물 아래에 배치된 제2 전극;상기 제1 전극과 상기 제1 도전형 반도체층을 전기적으로 연결시키는 연결배선;상기 제1 전극에 전기적으로 연결된 본딩 패드를 포함하고,상기 본딩 패드는 상기 제1 전극 상부에 배치된 발광소자.
- 제17항에 있어서,상기 발광구조물 상부 면에 배치되는 중앙 연결배선을 더 포함하는 발광소자.
- 제18항에 있어서,상기 중앙 연결배선은 상기 제1 전극과 전기적으로 연결된 발광소자.
- 제18항에 있어서,상기 연결배선은 상기 제1 전극 상에 배치되고, 상기 본딩 패드와 상기 절연층 사이에 배치된 발광소자.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/910,223 US9842974B2 (en) | 2013-08-05 | 2014-08-01 | Light emitting device including a connection wiring |
CN201480044562.4A CN105453280B (zh) | 2013-08-05 | 2014-08-01 | 发光器件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2013-0092447 | 2013-08-05 | ||
KR1020130092447A KR102181381B1 (ko) | 2013-08-05 | 2013-08-05 | 발광소자 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015020358A1 true WO2015020358A1 (ko) | 2015-02-12 |
Family
ID=52461630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/007086 WO2015020358A1 (ko) | 2013-08-05 | 2014-08-01 | 발광소자 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9842974B2 (ko) |
KR (1) | KR102181381B1 (ko) |
CN (1) | CN105453280B (ko) |
WO (1) | WO2015020358A1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102308701B1 (ko) * | 2015-03-04 | 2021-10-06 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | 자외선 발광소자 및 조명시스템 |
TWI584491B (zh) * | 2016-11-03 | 2017-05-21 | 友達光電股份有限公司 | 發光裝置與其製作方法 |
JP6824501B2 (ja) * | 2017-02-08 | 2021-02-03 | ウシオ電機株式会社 | 半導体発光素子 |
KR102324218B1 (ko) * | 2017-04-14 | 2021-11-10 | 삼성디스플레이 주식회사 | 터치 센서 및 이를 구비하는 표시 장치 |
KR102634586B1 (ko) * | 2018-06-11 | 2024-02-07 | 삼성디스플레이 주식회사 | 발광 소자, 그 제조방법 및 발광 소자를 포함하는 표시 장치 |
KR20210036199A (ko) * | 2019-09-25 | 2021-04-02 | 삼성전자주식회사 | 반도체 장치, 그 제조 방법, 및 이를 포함하는 디스플레이 장치 |
KR102721080B1 (ko) * | 2019-10-08 | 2024-10-24 | 삼성전자주식회사 | 반도체 장치, 그 제조 방법 및 이를 포함하는 디스플레이 장치 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010087038A (ja) * | 2008-09-29 | 2010-04-15 | Kyocera Corp | 発光素子および照明装置 |
US20100207159A1 (en) * | 2009-02-16 | 2010-08-19 | Hwan Hee Jeong | Semiconductor light emitting device |
KR101039999B1 (ko) * | 2010-02-08 | 2011-06-09 | 엘지이노텍 주식회사 | 반도체 발광소자 및 그 제조방법 |
US20120080709A1 (en) * | 2004-07-27 | 2012-04-05 | Cree, Inc. | Light emitting devices having roughened/reflective contacts and methods of fabricating same |
JP2013125929A (ja) * | 2011-12-16 | 2013-06-24 | Toyoda Gosei Co Ltd | Iii族窒化物半導体発光素子 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101039879B1 (ko) * | 2010-04-12 | 2011-06-09 | 엘지이노텍 주식회사 | 발광소자 및 그 제조방법 |
KR101171330B1 (ko) | 2010-08-27 | 2012-08-10 | 서울옵토디바이스주식회사 | 개선된 발광 효율을 갖는 발광 다이오드 |
KR101707118B1 (ko) * | 2010-10-19 | 2017-02-15 | 엘지이노텍 주식회사 | 발광소자 및 그 발광 소자의 제조 방법 |
KR101746002B1 (ko) * | 2010-11-15 | 2017-06-12 | 엘지이노텍 주식회사 | 발광소자 |
KR101776302B1 (ko) | 2011-01-27 | 2017-09-07 | 엘지이노텍 주식회사 | 발광 소자 및 발광 소자 패키지 |
KR101411375B1 (ko) * | 2011-12-21 | 2014-06-26 | (재)한국나노기술원 | 수직형 발광 다이오드 및 그 제조방법 |
-
2013
- 2013-08-05 KR KR1020130092447A patent/KR102181381B1/ko active IP Right Grant
-
2014
- 2014-08-01 WO PCT/KR2014/007086 patent/WO2015020358A1/ko active Application Filing
- 2014-08-01 CN CN201480044562.4A patent/CN105453280B/zh active Active
- 2014-08-01 US US14/910,223 patent/US9842974B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120080709A1 (en) * | 2004-07-27 | 2012-04-05 | Cree, Inc. | Light emitting devices having roughened/reflective contacts and methods of fabricating same |
JP2010087038A (ja) * | 2008-09-29 | 2010-04-15 | Kyocera Corp | 発光素子および照明装置 |
US20100207159A1 (en) * | 2009-02-16 | 2010-08-19 | Hwan Hee Jeong | Semiconductor light emitting device |
KR101039999B1 (ko) * | 2010-02-08 | 2011-06-09 | 엘지이노텍 주식회사 | 반도체 발광소자 및 그 제조방법 |
JP2013125929A (ja) * | 2011-12-16 | 2013-06-24 | Toyoda Gosei Co Ltd | Iii族窒化物半導体発光素子 |
Also Published As
Publication number | Publication date |
---|---|
CN105453280B (zh) | 2018-12-14 |
CN105453280A (zh) | 2016-03-30 |
KR102181381B1 (ko) | 2020-11-20 |
KR20150016698A (ko) | 2015-02-13 |
US20160211427A1 (en) | 2016-07-21 |
US9842974B2 (en) | 2017-12-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016089052A1 (ko) | 발광 모듈 | |
WO2013183901A1 (ko) | 발광소자, 발광소자 패키지 및 라이트 유닛 | |
WO2016032167A1 (ko) | 발광 소자 패키지 | |
WO2015020358A1 (ko) | 발광소자 | |
WO2017030396A1 (ko) | 발광 소자, 이 소자를 포함하는 발광 소자 패키지 및 이 패키지를 포함하는 발광 장치 | |
WO2017150910A1 (ko) | 발광 모듈 및 표시장치 | |
WO2014181996A1 (ko) | 발광 소자 | |
WO2017078399A1 (ko) | 발광소자 및 이를 구비한 조명 장치 | |
WO2016117910A1 (ko) | 발광 소자 | |
WO2016208957A1 (ko) | 광학 렌즈, 발광 소자 및 이를 구비한 발광 모듈 | |
WO2015156588A1 (ko) | 발광소자 및 조명시스템 | |
WO2013162337A1 (en) | Light emitting device and light emitting device package | |
WO2018117699A1 (ko) | 반도체 소자 | |
WO2017119661A1 (ko) | 반도체 소자 | |
WO2015083932A1 (ko) | 발광 소자 및 이를 구비한 조명 장치 | |
WO2015156504A1 (ko) | 발광소자 및 이를 구비하는 조명 시스템 | |
WO2013183888A1 (ko) | 발광소자 | |
WO2016148539A1 (ko) | 발광 소자 및 이를 구비한 카메라 모듈 | |
WO2016117905A1 (ko) | 광원 모듈 및 조명 장치 | |
WO2013172606A1 (ko) | 발광소자, 발광소자 페키지 및 라이트 유닛 | |
WO2017078441A1 (ko) | 반도체 소자 | |
WO2015111814A1 (ko) | 발광소자, 발광소자 패키지, 라이트 유닛 | |
WO2017034212A1 (ko) | 발광소자 및 이를 구비한 발광 소자 패키지 | |
WO2015170848A1 (ko) | 발광소자 | |
WO2017074035A1 (ko) | 발광소자 패키지, 및 이를 포함하는 조명시스템 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480044562.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14834231 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14910223 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14834231 Country of ref document: EP Kind code of ref document: A1 |