Source: https://patents.google.com/patent/JP5869080B2/en
Timestamp: 2020-01-18 01:05:40
Document Index: 243483218

Matched Legal Cases: ['art 17', 'art 17', 'art 17', 'art 17', 'art 17', 'art 17', 'art 17', 'art 31', 'art 68']

JP5869080B2 - Light emitting element - Google Patents
JP5869080B2
JP5869080B2 JP2014181513A JP2014181513A JP5869080B2 JP 5869080 B2 JP5869080 B2 JP 5869080B2 JP 2014181513 A JP2014181513 A JP 2014181513A JP 2014181513 A JP2014181513 A JP 2014181513A JP 5869080 B2 JP5869080 B2 JP 5869080B2
JP2014181513A
JP2014241444A (en
2010-08-09 Priority to KR10-2010-0076462 priority Critical
2010-08-09 Priority to KR20100076422 priority
2014-09-05 Application filed by エルジー イノテック カンパニー リミテッド, エルジー イノテック カンパニー リミテッド filed Critical エルジー イノテック カンパニー リミテッド
2014-12-25 Publication of JP2014241444A publication Critical patent/JP2014241444A/en
2016-02-24 Publication of JP5869080B2 publication Critical patent/JP5869080B2/en
A light emitting diode (LED) is a type of semiconductor element that converts electrical energy into light. Light-emitting diodes have lower power consumption and semi-permanent lifetime than existing light sources such as fluorescent and incandescent lamps.
It has advantages such as fast response speed, safety and environmental friendliness. From this point, many studies are underway to replace existing light sources with light-emitting diodes. Light-emitting diodes are used as light sources for lighting devices such as various lamps, liquid crystal display devices, electric boards, and street lamps used inside and outside the real world. As its use is increasing.
In an embodiment of the present invention, the plurality of metal layers include a first metal layer, a second metal layer, and the first metal layer.
The light emitting chip including the third metal layer between the metal layer and the second metal layer is disposed on the third metal layer, and is connected to the first metal layer and the second metal layer with a wire.
In an embodiment of the present invention, the first insulating film is a PI (polyimide) film, P
ET (polyethylene terephthalate) film, EVA (ethylene vinyl acetate) film, PEN (polyethylene naphthalate) film, TAC (triacetyl cellulose) film, PAI (polyamide-imide), PEEK (polyether-ether-ketone), perfluoro Alkoxy (PFA), polyphenylene sulfide (PPS),
At least one of the resin films is included.
In an embodiment of the present invention, the first guide member may be solder resist, titanium dioxide (
It includes at least one of a resin material having TiO 2 ), a resin material having glass fiber (Glass Fiber), and a polymer material.
In describing the embodiment, when each layer (film), region, pattern, or structure is formed “on” or “under” a substrate, each layer (film), region, pad, or pattern, When described, “on” and “under” are used to refer to “direct”.
ly) "or" indirectly "formed. Further, the reference for “upper” or “lower” of each layer will be described with reference to the drawings.
Referring to FIGS. 1 and 2, the light emitting device 100 includes a plurality of metal layers 11, 13, an insulating film 20 (20, 23) on the metal layers 11, 13, and a plurality of metal layers 11, 13. Among them, the light emitting chip 41 disposed on the first metal layer 11, the guide member 31 on the insulating film 21, and the resin layer 6 covering the light emitting chip 41 on the metal layers 11 and 13.
The plurality of metal layers 11 and 13 may be made of iron (Fe) such as iron (Fe), copper (Cu), and Fe—Ni.
) Containing alloy (alloy), aluminum (Al) or an aluminum containing alloy, or an alloy containing copper (Cu) such as Cu—Ni, Cu—Mg—Sn. The metal layers 11 and 13 may be formed as a single layer or multiple layers. The metal layers 11 and 13 are made of Fe or Cu, and a reflective layer or a bonding layer such as aluminum (Al), silver (Ag), or gold (Au) is formed on the upper surface and / or lower surface thereof. Can do.
The metal layers 11 and 13 may have a thickness of substantially 15 μm to 300 μm, and the thickness may be preferably in a range of 15 μm to 50 μm. It can operate as a support frame that supports the heat sink, and can operate as a heat dissipation member that conducts heat generated from the light emitting chip 41. The outer frame region of the metal layer has a length Y in the first direction Y.
1 and the length X1 in the second direction X orthogonal to the first direction Y can be different according to the size of the light emitting element.
A separation part 17 is disposed between the first metal layer 11 and the second metal layer 13, and the separation part 17 physically connects between the first metal layer 11 and the second metal layer 13. Separate. The separation part 17 may be selectively formed among a straight line, a curved line, and a bent line shape. The width or shape of the line shape may be the shape of the first metal layer 11 and the second metal layer 13 or the like. Can vary depending on size. The separation unit 17 includes a first metal layer 11 and a second metal frame.
The metal layer 13 is separated, and the shape and size of the first metal layer 11 and the second metal layer 13 may be different according to the width and position of the separation part 17.
The first metal layer 11 or the second metal layer 13 is circular by a cutting process,
It can be formed in various shapes such as a polygonal shape or a hemispherical shape.
On the first metal layer 11 and the second metal layers 11 and 13, insulating films 21 and 23 are formed.
The insulating films 21 and 23 may be formed on the edge of the first metal layer 11 and / or the second metal layer 13.
The insulating films 21 and 23 are attached to the top surfaces of the first metal layer 11 and the second metal layer 13 to support the first metal layer 11 and the second metal layer 13. Insulating films 21 and 2
3 is attached to the upper surfaces of the plurality of metal layers 11 and 13 to support the metal layers, and actually functions as a main body.
The insulating films 21 and 23 include translucent or non-translucent films, for example, PI (
Polyimide) film, PET (polyethylene terephthalate) film, EVA (ethylene vinyl acetate) film, PEN (polyethylene naphthalate) film, TA
Includes C (triacetyl cellulose) film, PAI (polyamide-imide), PEEK (polyether-ether-ketone), perfluoroalkoxy (PFA), polyphenylene sulfide (PPS), resin fill (PE, PP, PET), etc. be able to.
The insulating films 21 and 23 may be formed to have a thickness equal to or greater than that of the metal layers 11 and 13, for example, a thickness of 30 μm to 500 μm, preferably 4
It can be formed to a thickness of 0 μm to 60 μm.
The width W1 of the first insulating film 21 may be a constant width or a part of the width W1 may be different. The width W1 of the first insulating film 21 may be at least several tens of μm. The width W2 of the first insulating film 23 is formed to be a constant width,
Some can be formed in different widths. The width W2 of the second insulating film 23 may be formed wider than the gap G1 between the metal layers 11 and 13, and may be formed to be 20 μm or more, for example. The width W1 of the first insulating film 21 and the second insulating film 2
The width W2 of 3 can be the same or different. The second insulating film 23 may have a width of at least 20 μm in order to support the two metal layers 11 and 13.
The insulating films 21 and 23 may include open (opening) regions A1 and A2,
The open areas A1 and A2 are holes or open areas, and the insulating film 2
This is a region where the upper surface of the first metal layer 11 and / or the second metal layer 13 is exposed through the insides of 1 and 23.
The open regions A1 and A2 include a first open region A1 where a part of the upper surface of the first metal layer 11 is exposed and a second open region A2 where a part of the upper surface of the second metal layer 13 is exposed, The size and shape of the first open region A1 may be the same as or different from the size and shape of the second open region A2. If the embodiment is two metal layers 11, 13, 2
The number of open regions A1 and A2 is described. When the number of metal layers 11 and 13 is three or more, the number of open regions can be increased. Open areas A1, A2
The size and shape of the insulating films 21 and 23 may vary depending on the width and shape of the insulating films 21 and 23.
The guide member 31 may be formed on the first insulating film 21 and may be formed of a resin material, a non-metal material, or a metal material. The guide member 3
Reference numeral 1 can be defined as a dam member for preventing the reflection member and / or the overflow of the resin material.
The guide member 31 may be a resin material such as a solder resist or a conductive material such as a solder paste. As the color of the solder resist, for example, white can be used, and this color can effectively reflect incident light. The guide member 31 is made of a metal material such as Ag, Al, Cu, Au, Ag-alloy, Al-alloy, Cu-al.
Loy, Au-alloy metal can be selectively included, and the metal can be formed in a single layer or multiple layers. The guide member 31 is a metal seed layer such as Ag, Al.
A reflective layer can be formed on at least one of Ni by a plating process.
The guide member 31 may include a non-metallic material, and the non-metallic material may be a white resin such as solder resist, titanium dioxide (TiO 2 ), and glass fiber (Glass Fiber).
) Resin having at least one of (e.g., PPA), or a polymer material (silicon-based,
An epoxy-based material) or the insulating film material.
The guide member 31 may be substantially formed with a thickness T2 of 15 μm to 500 μm, and may be the same as or different from the thickness of the insulating films 21 and 23. The guide member 31 may be formed thicker than the insulating films 21 and 23. The thickness T2 of the guide member 31 can be formed thicker in consideration of the directivity distribution of light.
The upper surface of the guide member 31 may be formed higher than the upper surface of the light emitting chip 41 for light reflection.
The guide member 31 is formed on the first insulating film 21 and the light emitting chip 41.
The shape can be formed into a frame, ring shape or loop shape when viewed from above. The guide member 31 is circular or polygonal when viewed from above, and can prevent the resin layer 61 from overflowing.
The light emitting chip 41 is disposed on the first metal layer 11, and the first metal layer 11 and the second metal layer 11.
It can be electrically connected to the metal layer 13.
The light emitting chip 41 is connected to the first metal layer 11 by the first wire 51 and the second wire 52.
And can be connected to the second metal layer 13. In addition, the light emitting chip 41 may be electrically connected to the first metal layer 11 and the second metal layer 13 in a flip chip manner.
The light emitting chip 41 has been described as being disposed on the first metal layer 11.
And / or may be disposed on the second metal layer 13, but the embodiment is not limited thereto.
The light emitting chip 41 is connected to the first metal layer 11 by the first wire 51, and the second metal layer 13.
And the second wire 52. Here, the light emitting chip 41 may be formed to a thickness of 80 μm or more, and any one of the high points of the wires 51 and 52 is formed to be 40 μm or more higher than the top surface of the light emitting chip 41. Can do.
Also, a Zener diode or TVS (transient vo) for protecting the light emitting chip 41 is formed above or below at least one of the first metal layer 11 and the second metal layer 13.
A protective element such as a diode suppressor may be disposed and electrically connected to the light emitting chip 41. The protective element includes first and second metal layers 11.
, 13 and connected in parallel with the light emitting chip 41 to protect the light emitting chip 41 from an abnormal voltage applied to the light emitting chip 41. Such a protective element may not be provided.
The resin layer 61 may be disposed on the first metal layer 11 and the second metal layer 13, and a part of the resin layer 61 may be formed on the upper surface of the first insulating film 21. The resin layer 61 is a guide member 31.
It is arranged in an open region formed inside. The open region of the guide member 31 may be formed in a region larger than the first and second open regions A1 and A2. The resin layer 61 covers an inner region of the guide member 31, for example, the first open region A1 and the second open region A2. The resin layer 61 may be physically separated from the first open area A1 and the second open area A2.
A lens can be formed on the resin layer 61, and the lens has a convex lens shape.
The concave lens shape may include a lens shape in which convex and concave are mixed, and the upper surface of the resin layer 61 may be brought into contact with or separated from the upper surface, but the embodiment is not limited thereto.
For example, the metal layer 10 may be implemented by a metal plate such as a lead frame, and the material may be an alloy containing iron (Fe) such as iron (Fe), copper (Cu), or Fe—Ni.
alloy), aluminum (Al) or an alloy containing aluminum, or Cu-Ni
, Cu—Mg—Sn, and an alloy containing copper (Cu). The metal layer 10 may be formed of a single layer or a multi-layer metal, and the upper surface and / or the lower surface thereof is reflective such as aluminum (Al), silver (Ag), gold (Au), or solder resist. A layer or a bonding layer can be formed. The metal layer plating process and coating process may be performed before or after the formation of the insulating films 21 and 23.
4 and 5, an insulating film 20 (21, 23) is formed on the metal layer 10. The insulating film 20 (21, 23) is 30 μm in the thickness direction of the metal layer 10.
A thickness T1 of m to 500 μm can be formed. In addition, the insulating film 20 may be formed to have a thickness greater than that of the metal layer 10. Here, although embodiment demonstrated the structure which attached the insulating film 20 (21, 23) on the metal layer 10, the insulating film 20 (21, 23) is demonstrated.
23) The metal layer 10 can be deposited on top, and the order of such steps can be changed with each other.
The insulating films 21 and 23 may selectively include a film having an optical function, a thermal conductivity function, and a moisture resistance function as an insulating film. The insulating films 21 and 23 are PI (
Includes C (triacetyl cellulose) film, PAI (polyamide-imide), PEEK (polyether-ether-ketone), perfluoroalkoxy (PFA), polyphenylene sulfide (PPS), resin film (PE, PP, PET), etc. be able to.
The insulating films 21 and 23 may be attached on the metal layer 10 after forming a plurality of open regions A1 and A2. The open regions A1 and A2 may be holes formed in a single film or open regions, and the upper surface of the metal layer may be formed through the inside of the insulating films 21 and 23 by the open regions A1 and A2. This is the exposed area. The insulating films 21 and 23 are the first insulating film 21 formed on the edge of the first open region A1 or the edge of the metal layer 10, and the second insulating film 2 formed on the edge of the second open region A2.
It can be divided into three. The second insulating film 23 may be integrally formed with the first insulating film 21 as a part of the first insulating film 21. The first and second insulating films 21 and 23 may be implemented as a single film.
One of the plurality of open areas A1, A2, for example, the second open area A2
Can be formed with a minimum width of 60 μm. This can be formed in a range that does not interfere with wire bonding. The first open region A1 may be formed to have a width enough to mount a light emitting chip, and may be formed to be wider than the second open region A2. Here, the first open region A1 is described as a region where a light emitting chip is mounted, and the second open region A2 is described as a region where a wire is bonded. Not what you want.
The first open region A1 and the second open region A2 may be formed in an open region having a predetermined shape through a punching process, a cutting process, or an etching process with respect to an insulating film having a single film shape. . The first open area A
1 and the width or shape of the second open region A2 may be changed. The open regions A1 and A2 can be formed after the insulating film 20 (21, 23) is attached on the metal layer 10 or before the insulating film 20 (21, 23) is attached.
The insulating films 21 and 23 may be made of other materials such as sapphire (Al 2 O 3 ) or SiO 2.
, SiO x, or insulating material for printing with an insulating material such as oxide or nitride, such as SiO x N y can be coated, predetermined or insulating films 21 and 23 to be cured in this case is flexible It can be formed of a material having a viscosity.
Referring to FIGS. 6 and 8, a guide member 31 is formed on the upper surfaces of the insulating films 21 and 23. The guide member 31 can use any one of a printing method, a coating method, and a film bonding method, and the printing method is formed into a screen printing method after masking an area other than a printing area. The coating method can be formed by applying a reflective material on a desired region, and the film adhesion method can be formed by adhering films such as a reflection sheet. Here, the guide member 3
1 and the materials of the insulating films 21 and 23 can be selected in consideration of thermal characteristics associated with wire bonding or a reflow process.
The guide member 31 may be formed by a printing method using a solder resist or a solder paste, and the solder resist is white and effectively reflects incident light. Can be made. The guide member 31 is made of Ag, Al, Cu, Au, Ag-alloy, Al-alloy, C
A highly reflective material such as u-alloy or Au-alloy may be selectively included, and the reflective material may be formed in a single layer or multiple layers. The guide member 31 may be formed by performing a plating process on a metal seed layer such as Ag, Al, or Ni.
When viewed from above, the shape can be formed into a frame, a loop shape, or a ring shape. The guide member 31 may be continuously or discontinuously formed on the upper surface of the first insulating film 21.
The width W3 of the guide member 31 may be the same as or different from the width of the first insulating film 21. When the widths of the guide member 31 and the first insulating film 21 are the same, the surface reflection efficiency can be improved. The guide member 31 and the first
When the width of the insulating film 21 is different, the guide member 31 can be stably disposed on the first insulating film 21.
The light emitting chip 41 is connected to the first metal layer 11 by the first wire 51 and the second wire 51.
And can be connected to the second metal layer 13. Further, the light emitting chip 41 may be electrically connected to the first metal layer 11 and the second metal layer 13 by a flip chip or the like.
And the second wire 53. Here, the light emitting chip 41 may be formed to a thickness of 80 μm or more, and one of the high points of the wires 51 and 52 is formed to be higher than the top surface of the light emitting chip 41 by 40 μm or more. be able to.
A concave lens shape and a lens shape in which convex and concave are mixed can be included, but the embodiment is not limited thereto. The lens may be in contact with or separated from the upper surface of the resin layer 61, but the embodiment is not limited thereto.
The metal layers 11A, 11B, and 11C are arranged on the same plane, the first insulating film 21 is formed on the edges of the metal layers 11A, 11B, and 11C, and the second insulating films 23A and 23B are adjacent to the adjacent metal layers 11A and 11B. An adjacent metal layer 1 formed between the metal layers 11B and 11C, respectively.
1A and 11B and metal layers 11B and 11C can be supported and fixed. The third insulating film 22 is formed on the center side of the second metal layer 11B and is divided into two regions.
The embodiment has been described with a structure in which the two light emitting chips 41A and 41B are arranged on the left / right.
The light emitting chips may be arranged in a matrix form or a line form passing through the same center, and the light emitting chips may be connected to each other in series or in parallel to each other, but the embodiment is not limited thereto. In addition, the light emitting device described above can be manufactured into two light emitting devices when the central portion of the third insulating film 22 is cut.
The guide member 32 may be formed on the edge of the upper surface region of the first metal layer 11, and a part thereof may be formed on the outer upper surface of the insulating film 25. The guide member 32 may be disposed on the edge of the upper surface region of the first metal layer 11 and the outer upper surface of the insulating film 25.
The guide member 32 can be electrically connected to the upper surface of the first metal layer 11, and is electrically separated from the upper surface of the second metal layer 13 by the insulating film 25. The guide member 32 may be formed in a loop shape, a frame shape, or a ring shape at an edge of the first metal layer 11 and the insulating film 25, and the insulating film 25 is an upper surface region of the second metal layer 13. It can be formed in a loop shape, a frame shape, or a ring shape at the edge of the frame.
The insulating film 25 functions to prevent physical or electrical contact between the guide member 32 and the second metal layer 13, and prevents a short circuit between the first metal layer 11 and the second metal layer 13. Can do. The insulating film 25 and the guide member 32 are adjacent two metal layers 11.
, 13 can be supported and fixed. The guide member 31 may be formed to have the same thickness as the resin layer 61.
Referring to FIGS. 15 and 16, the insulating films 21 and 23 are formed of the first and second metal layers 11 and 11.
13 is formed on the entire top surface of 13 and includes a plurality of open regions A1, A2, A3. The plurality of open regions A1, A2, A3 are a first open region A1 where the light emitting chip 41 is mounted on the first metal layer 11, and a second wire 52 is bonded on the second metal layer 12. An open region A2 and a third open region A3 where the first wire 51 is bonded on the first metal layer 11 are included. As another example, the third bonding region A3 may be the light emitting chip 4.
If 1 is a chip having a vertical electrode structure, it may not be formed.
The first to third open regions A1, A2, and A3 may be formed in a circular shape or a polygonal shape. Here, the second open region A2 may be formed to be at least four times smaller than the lower area of the light emitting chip 41, and the first and third open regions A1.
, The width or diameter of A3 is greater than the wire diameter (eg 20-50 μm), for example 60 μm
It can be formed to ˜120 μm.
Since the bonding area of the insulating films 21 and 23 is wider than the structure of FIG. 1, the first metal layer 1
The first and second metal layers 13 can be supported more firmly. The guide member 31 may be formed on the upper surface edge of the insulating films 21 and 23, and the resin layer 61 may be molded inside the guide member 31.
Referring to FIG. 17, the light emitting device includes three metal layers 11, 13, 15 and the metal layers 11,
Insulating film 21 is attached on 13 and 15. A plurality of open areas A1, A2, A3 are formed in the insulating film 21, and the plurality of open areas A1, A2, A3 open (open) part of the upper surfaces of the metal layers 11, 13, 15 respectively.
A third metal layer 15 is disposed between the first metal layer 11 and the second metal layer 13, and the third metal layer 1
5 is mounted with a light emitting chip 41. The light emitting chip 41 may be disposed in the first open area A1 of the insulating film 21, and the second open area A2 and the third open area A3 may be wire bonding areas.
The light emitting chip 41 is different from the first metal layer 11 disposed in the third open region A3 with the first wire 5.
1 and the second metal layer 13 disposed in the second open region A2 is connected by a second wire 52.
Referring to FIG. 18, the second metal layer 13 is disposed on at least a part of the first metal layer 11, and is formed on one side of the first metal layer 11 in a circular, polygonal, or random shape. The first
The separation part 17 between the metal layer 11 and the second metal layer 13 may have a constant width or an irregular width.
As shown in FIG. 22, the second and third metal layers 13 </ b> A and 13 </ b> B may be formed in a circular or polygonal shape in at least two corner regions of the first metal layer 11. Second and third metal layer 1
3A and 13B may be formed in opposite corner regions of the first metal layer 11 and used as electrodes, respectively, or any one of them may be used as a dummy pattern. The insulating films 21 and 23 are formed at the edges of the three metal layers 11, 13A, and 13B, and the upper surfaces of the three metal layers 11, 13A, and 13B can be exposed through the open regions A1 and A2.
An insulating film 21 is formed on the boundary between the first and second metal layers 11 and 13, and the insulating film 21 covers a region excluding the second open region A <b> 2, and the second metal layer 13.
The outer upper surface of the substrate can be exposed without forming the insulating film 21.
Referring to FIG. 27, the second metal layer 13 has a diameter approximately equal to the width of the first metal layer 11,
It can be formed in a hemispherical shape. The insulating film 21 includes the first metal layer 11 and the second metal layer 1.
3, and a guide member can be formed on the upper surface edge of the metal layers 11 and 13.
The edge of the resin layer 63 may be further formed with a guide member 31 or a reflective material.
A spacer 18 is disposed in the separation part 17 between the first metal layer 11 and the second metal layer 13, and the spacer 18 is disposed between the first metal layer 11 and the second metal layer 13 and is made of an insulating material. including. The spacer 18 is bonded between the first metal layer 11 and the second metal layer 13, and an interval between the first metal layer 11 and the second metal layer 13 can be separated to prevent an electrical short circuit. The spacer 18 is SiO 2, SiO x, SiO x N y, Si 3 N 4, Al 2 O 3, TiO 2
Referring to FIG. 34, in the light emitting device, three metal layers 11, 13, 15 are arranged, and the first and second metal layers 11, 13 of the three metal layers 11, 13, 15 are used as electrodes. The third
The metal layer 15 is disposed between the first and second metal layers 11 and 13 and can be used as a heat dissipation plate.
The second and third insulating films 23A and 23B are attached to the upper surfaces of the boundary portions of the metal layers 11, 13, and 15 so as to cover the separation portions 17A and 17B between the adjacent metal layers 11, 13, and 15, respectively.
A second guide member 34 is formed on the insulating films 23A and 23B. First insulating film 21
A first guide member 31 is formed on the top. The light emitting chips 41, 42, and 43 are disposed in open areas of the first guide member 31 and the second guide member 34. The first guide member 31 and the second guide member 34 are disposed on the edges of the light emitting chips 41, 42, and 43, and can effectively reflect incident light.
The first light emitting chip 41 is connected to the first metal layer 11 by wires 51 and 52, the first light emitting chip 41 and the second light emitting chip 42 are connected to the chip-to-chip by wires 51 and 52, and the second
The light emitting chip 42 can be connected to the third metal layer with wires 51 and 52.
Referring to FIG. 36, the light emitting device may be formed on a surface where the surface S5 of the resin layer 61 is concave. For example, the resin layer 61 may be formed in a lens shape in which the side portion of the resin layer 61 is high and the central portion is low. Gap T between the side portion and the central portion of the resin layer 61
6 can be formed to a thickness of about 0.001 to 1 mm. Such a gap T6 can block the contact of the light guide plate, and can block an abnormal color distribution such as a color diffusion phenomenon caused by the contact with the light guide plate.
Referring to FIG. 38, the light emitting device includes first and third guide members 3 on the first insulating film 21.
7A and 37B are formed. The first guide member 37 </ b> A is disposed on the upper surface and the inner surface of the first insulating film 21, and a part thereof is disposed closer to the light emitting chip 45 than the first insulating film 21 and is disposed on the upper surface of the first metal layer 11. Can be touched. Third guide member 37B
Is disposed on the upper surface and the inner surface of the first insulating film 21, and a part thereof is disposed closer to the light emitting chip 45 than the first insulating film 21 and can be in contact with the upper surface of the second metal layer 13. . The first guide member 37A has a predetermined distance D3 to the upper surfaces of the metal layers 11 and 13.
The distance D3 can be 0.1 mm or more.
If the first and third guide members 37A and 37B are made of a non-metallic material or an insulating resin material, they may be connected to each other.
The second guide member 37 </ b> C may be formed on the upper surface and the inner surface of the second insulating film 23 and may be in contact with the upper surface of the first metal layer 11. The second guide member 37C may be connected to the first guide member 37A and may be separated from the third guide member 37B. The second guide member 37 </ b> C is physically separated from the second metal layer 13.
In the embodiment, the insulating film 21 is formed on the edge of the upper surface region of the metal layers 11 and 13.
, 23A and 23B can be spaced apart by 1 μm or more between the side surfaces of the metal layers 11 and 13 and the insulating film 21, but the embodiment is not limited thereto.
A resin layer 63 is formed in the guide member 31, and the phosphor layer 73 is formed on the resin layer 63.
Can be formed. The phosphor of the phosphor layer 73 can be dispersed in the entire region, and since it is separated from the light emitting chip 45, the problem of discoloration can be prevented.
The side surface of the resin layer 67 may be formed on the same side surface as the side surfaces of the first metal layer 11 and the second metal layer 13. The width of the resin layer 67 is the first metal layer 11 and the second metal layer 1.
3 can be formed at a distance between both side surfaces.
Here, the resin layer 67 has the thickest central portion 67A and can be formed with a thickness T4 that is lower as it approaches the outer portion 67A. The central portion 57A is formed in a convex lens shape, and the thickness T4 is It can be formed lower or higher than the light emitting chip 45. Such a resin layer 67 can be manufactured using an injection molding frame. In addition, the light emitting element is cut and separated into size units of each light emitting element after the resin layer 67 is cured, so that the metal layer 1 during the manufacturing process is separated.
The light emitting chip 45 can be mounted on the first and third layers 13 or the resin layer 67 can be formed. The separation part 17 between the metal layers 11 and 13 may be formed using a laser or a cutting process after the final resin layer is formed, but the embodiment is not limited thereto.
Referring to FIG. 46, the upper surfaces of the metal layers 11 and 13 include concavo-convex structures 11E and 13E. The concavo-convex structures 11E and 13E are disposed under the first insulating film 21 or the metal layers 11 and 1E.
3 open areas A1, A2.
Referring to FIG. 47, at least one of the inner surfaces of the first insulating film 21 and the guide member 31 may be formed on the inclined side surfaces 21d and 31d. The oblique side surface 21d
, 31d may be formed from the inner surface of the first insulating film 21 to the inner surface of the guide member 31. The oblique side surfaces 21d and 31d may be formed on one side surface of the first insulating film 21 and the guide member 31, or may be formed on two side surfaces.
The inclination angle of the oblique side surfaces 21d and 31d is 15 to 8 from the upper surface of the metal layers 11 and 13.
The inclined side surfaces 21d and 31d can reflect light efficiently in the radiation direction. Further, the oblique surfaces 21d and 31d may be coated with a reflective material, and the reflective material may be a non-conductive material or may be formed on an insulating material such as the adhesive layer so as to be electrically connected between the metal layers. The short circuit can be eliminated.
The upper surface of the resin layer 61 may be flat, and the upper width of the resin layer 61 may be the diagonal side surface 21d.
, 31d can be formed wider than the lower width.
The part 31E of the guide member 31 can reflect incident light when the first insulating film 21 is made of a light-transmitting material. The material of the guide member 31 and the first metal layer 11
When the material is a metal, they can be joined to each other, and the first insulating film 21 can be fixed.
Here, when the guide member 31 is made of a non-metallic material or a resin-based resin, the through hole 21E of the first insulating film 21 excludes the upper surface of the boundary portion between the two metal layers 11 and 13. The first metal layer 11 and the second metal layer 13 may be formed on the first metal layer 11 and the hole 21E, respectively, and a part of the guide member 31 may be formed on the hole 21E. Hole 21
A plurality of E can be formed on the first insulating film 21.
The separation layer 17 disposed between the first metal layer 11 and the second metal layer 13 includes the resin layer 6.
8 part 68C can be packed, or an insulating film can be attached to the top or / and bottom of the metal layer.
The metal layers 12A, 12B, and 12C are arranged on the same plane, the first insulating film 21 is formed on the edges of the metal layers 12A, 12B, and 12C, and the second insulating films 23A and 23B are adjacent to the adjacent metal layers 12A and 12B. Adjacent metal layers 1 formed between the metal layers 12B and 12C, respectively.
2A, 12B and the metal layers 12B, 12C can be supported and fixed.
When the first light-emitting chip 41A and the second light-emitting chip 41B are horizontal chips, the first light-emitting chip 41A has a first metal layer 1 via a first wire 51A and a second wire 51B, respectively.
2A and the second metal layer 12B can be electrically connected, and the second light emitting chip 41B is connected to the second metal layer 12B and the third metal layer 12 via the third wire 51C and the fourth wire 51D, respectively.
C can be electrically connected.
A guide member 31 is formed on the first insulating film 21, and the guide member 31 is formed at a position at least higher than the light emitting chips 41A and 41B.
The light emitted from 1A and 41B is reflected.
Referring to FIG. 53, the light emitting chips 41A and 41B may be formed as a horizontal electrode structure, and the first metal layer 12A functions as a positive electrode and the third metal layer 12B functions as a negative electrode. Can. Of course, contrary to the circuit shown in FIG. 14, the light emitting chip 41A,
The first metal layer 12A functions as a negative electrode, and the third metal layer 12B functions as a positive electrode.
The metal layers 12A, 12B, and 12C are arranged on the same plane, the first insulating film 21 is formed at the edge of the metal layers 12A, 12B, and 12C, and the second insulating film 23 is the adjacent metal layer 12.
A and 12B are formed between the metal layers 12A and 12C and the metal layers 12B and 12C, respectively, to support and fix the adjacent metal layers 12A and 12B, the metal layers 12A and 12C, and the metal layers 12B and 12C. Can do.
2A and the second metal layer 12B can be electrically connected, and the second light emitting chip 41B is connected to the first metal layer 12A and the third metal layer 12 via the second wire 51B and the fourth wire 51D, respectively.
Referring to (a) of FIG. 55, the light emitting chips 41A and 41B can be formed in a horizontal electrode structure, and the first metal layer 12A functions as a common electrode of the positive electrode, and the second metal layer 1
The 2B and the third metal layer 12C may be implemented by a circuit having a negative electrode. Conversely, referring to FIG. 55B, each electrode of the light emitting chips 41A and 41B is changed to change the first metal layer 1.
2A acts as a common electrode for the negative electrode, and the second metal layer 12B and the third metal layer 12C can be embodied as a positive electrode.
Referring to FIG. 56, the light emitting device 100 includes a plurality of metal layers 11 and 13 and the metal layers 11 and 13.
Insulating films 21 and 23 on 13, a light emitting chip 41 disposed on at least the metal layer 11 among the plurality of metal layers 11 and 13, and a guide member 3 on the insulating film 21
1 and a resin layer 61 covering the light emitting chip 41 on the metal layers 11 and 13.
The metal layers 11 and 13 may be a separate main body, for example, PPA (Polyphthalamide).
Without using a structure in which the metal layer is fixed with a resin-based body such as
Can be used for a flexible curved surface, bent at a preset angle, or partially etched for use.
Although the inclined portions B3 of the plurality of metal layers 11 and 13 have opposite side surfaces facing each other,
The inclined portions B3 can face each other in an inclined state, and the inclination angle diagram of the inclined portion B3 is the metal layer 11.
, 13 can be formed at an angle of 15 to 89 ° from the upper surface of the inner portion B2. The oblique side surface of the inclined portion B3 can efficiently reflect light in the radial direction.
Referring to FIG. 57, one of the upper surface, the lower surface, and the side surface of the metal layers 11 and 13 includes one or more concavo-convex structures 11E and 13E each including a concave portion and a convex portion. The uneven structure 11E,
13E may be disposed under the first insulating film 21 or may be extended to the open regions A1 and A2 of the metal layers 11 and 13, respectively.
In addition, the uneven structure 11E, 13E includes a region where the light emitting chip 41 is disposed or the wires 51, 52 to improve contact characteristics between the metal layers 11, 13 and the light emitting chip 41 and the wires 51, 52. The metal layer 11 in the remaining area excluding the area to be bonded
, 13 on the surface.
The substrate 111 is a sapphire substrate (Al 2 O 3 ), GaN, SiC, ZnO, Si, G
It can be selected from the group consisting of aP, InP, Ga 2 O 3 , a conductive substrate, GaAs, and the like. The substrate 111 may be a growth substrate, and an In layer may be formed on the growth substrate.
x Al y Ga 1-x- y N can be grown in a semiconductor having a (0 ≦ x ≦ 1,0 ≦ y ≦ 1,0 ≦ x + y ≦ 1) of the formula.
The first conductive type semiconductor layer 113 is a group 3-5 group compound semiconductor doped with a first conductive type dopant, for example, GaN, AlN, AlGaN, InGaN, InN, InA.
Etc. can be selected. When the first conductivity type is an N-type semiconductor, the first conductivity type dopant includes an N-type dopant such as Si, Ge, Sn, Se, or Te. The first conductive semiconductor layer 114 may be formed as a single layer or multiple layers, but the embodiment is not limited thereto.
The active layer 114 may have a single quantum well structure, a multiple quantum well structure, a quantum line structure, or a quantum dot structure. The active layer 114 is formed using a group 3-5 group compound semiconductor material with a period of a well layer and a barrier layer, for example, a period of an InGaN well layer / GaN barrier layer or an InGaN well layer / AlGaN barrier layer. Can do.
A conductive clad layer may be formed on and / or below the active layer 114.
The conductive clad layer may be formed on an AlGaN-based semiconductor.
The second conductive semiconductor layer 115 is formed on the active layer 114, and the second conductive semiconductor layer 115 is a group 3-5 group compound semiconductor doped with a second conductive dopant, for example, GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlIn
N, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, or the like can be selected. When the second conductivity type is a P-type semiconductor, the second conductivity type dopant is M
P-type dopants such as g, Ze, etc. are included. The second conductive semiconductor layer 115 may be formed as a single layer or multiple layers, but the embodiment is not limited thereto.
A third conductive semiconductor layer, for example, an N-type semiconductor layer may be formed on the second conductive semiconductor layer 115. The light emitting structure 135 includes an NP junction, a PN junction, and an NPN.
At least one of a junction and a PNP junction structure may be formed.
A current diffusion layer may be formed on the second conductive semiconductor layer 115, and the current diffusion layer may be indium tin oxide (ITO) or indium zinc (IZO).
oxide), IZTO (indium zinc tin oxide), IAZO
(Indium aluminum zinc oxide), IGZO (indium
gallium zinc oxide), IGTO (indium gallium)
tin oxide), AZO (aluminum zinc oxide), ATO
(Antimony tin oxide), GZO (gallium zinc ox)
ide) or the like.
Referring to FIG. 61, in the light emitting chip 45, the light emitting device 45 includes an ohmic layer 121 formed under the light emitting structure 110, a reflective layer 124 formed under the ohmic layer 121, and a conductive support under the reflective layer 124. A member 125 is formed, and the reflective layer 124 and the light emitting structure 1 are formed.
A protective layer 123 may be formed on the ten edges.
The light emitting device 45 does not perform an etching process for exposing the first conductive semiconductor layer 113 in the structure of FIG. 52, and forms an ohmic layer 121, a channel layer 123, and a reflective layer on the second conductive semiconductor layer 115. 125 and the conductive support member 125 are formed.
11 and the buffer layer 112 may be formed.
The ohmic layer 121 is in ohmic contact with the lower layer of the light emitting structure 110, for example, the second conductive semiconductor layer 115, and the material thereof is ITO (indium tin oxide), IZO.
(Indium zinc oxide), IZTO (indium zinc tin)
oxide), IAZO (indium aluminum zinc oxide)
, IGZO (indium gallium zinc oxide), IGTO (in
dium gallium tin oxide), AZO (aluminum cin
c oxide), ATO (antimony tin oxide), GZO (gal
lium zinc oxide), Ag, Ni, Al, Rh, Pd, Ir, Ru, Mg
, Zn, Pt, Au, Hf, and a material composed of a selective combination thereof. In addition, the metal material and IZO, IZTO, IAZO, IGZO, IGTO
, AZO, ATO, etc. can be formed in multiple layers using a light-transmitting conductive material such as IZO /
Lamination can be performed using Ni, AZO / Ag, IZO / Ag / Ni, AZO / Ag / Ni, or the like. A layer for blocking current may be further formed in the ohmic layer 121 so as to correspond to the electrode 116.
The protective layer 123 is made of ITO (indium tin oxide), IZO (indi
um zinc oxide), IZTO (indium zinc tin oxide)
e), IAZO (indium aluminum zinc oxide), IGZO
(Indium gallium zinc oxide), IGTO (indium
gallium tin oxide), AZO (aluminum zinc oxi)
de), ATO (antimony tin oxide), GZO (gallium)
zinc oxide), SiO 2, SiO x, SiO x N y, Si 3 N 4, Al 2 O 3
, TiO 2 or the like. The protective layer 123 can be formed using a sputtering method, an evaporation method, or the like, and can prevent a metal such as the reflective layer 124 from short-circuiting the layer of the light emitting structure 110.
The reflective layer 124 is made of Ag, Ni, Al, Rh, Pd, Ir, Ru, Mg, Zn, Pt,
It may be formed of a material composed of Au, Hf, and a selective combination thereof. The reflective layer 124 may be formed larger than the width of the light emitting structure 110, which may improve light reflection efficiency.
The conductive support member 125 has a base substrate of copper (Cu), gold (Au), nickel (
Ni), molybdenum (Mo), copper-tungsten (Cu-W), carrier wafer (example: S)
i, Ge, GaAs, ZnO, Sic, etc.). A bonding layer may be further formed between the conductive support member 125 and the reflective layer 124, and the bonding layer may bond two layers to each other.
The light emitting chip disclosed above is an example and is not limited to the above disclosed features. The light emitting chip can be selectively applied to the embodiment of the light emitting element,
The light emitting device of the above disclosed embodiment has a structure for packaging a light emitting chip.
A plurality of lamps can be arranged on the board and provided to a lighting system such as a light emitting module or a lighting unit. The light emitting element selected from the above-described embodiments can be applied to the lighting system.
The light emitting element according to the embodiment can be applied to a lighting unit. The lighting unit includes a display device shown in FIGS. 62 and 63, including a structure in which a plurality of light emitting elements are arranged, FIG.
Including the illumination device shown in FIG. 4, an illumination lamp, a signal lamp, a vehicle headlamp, a lightning board, and the like can be included.
Referring to FIG. 62, the display apparatus 1000 according to the embodiment includes a light guide plate 1041, a light emitting module 1031 that provides light to the light guide plate 1041, a reflection member 1022 below the light guide plate 1041, and the light guide plate 1041. An optical sheet 1051 on the optical sheet 105
1 may include a display panel 1061 and a bottom cover 1011 for storing the light guide plate 1041, the light emitting module 1031 and the reflecting member 1022, but the present invention is not limited thereto.
The bottom cover 1011, the reflecting member 1022, the light guide plate 1041, and the optical sheet 1051
Can be defined as a light unit 1050.
The light guide plate 1041 functions to diffuse light into a surface light source. The light guide plate 10
41 is made of a transparent material, for example, PMMA (polymethylmetaacr).
acrylic resin system such as ylate), PET (polyethylene terepheth)
plate), PC (polycarbonate), COC (cyclofi)
n copolymer) and PEN (polyethylene naphthala)
te) Any one of the resins can be included.
The substrate 1033 is a printed circuit board (PCB, Pri) including a circuit pattern (not shown).
nted Circuit Board). However, the substrate 1033 is 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. The light emitting device 100 includes the bottom cover 101.
The substrate 1033 can be removed when mounted on one side surface or the heat dissipation plate. Here, a part of the heat radiating plate may be in contact with the upper surface of the bottom cover 1011.
The reflection 1022 may be disposed under the light guide plate 1041. The reflection member 1022 can improve the luminance of the light unit 1050 by reflecting the light incident on the lower surface of the light guide plate 1041 so as to be directed upward. The reflection member 1022 may be formed of, for example, PET, PC, PVC resin, but is not limited thereto. The reflective member 1022 is formed of the bottom cover 1011.
The bottom cover 1011 can accommodate the light guide plate 1041, the light emitting module 1031, the reflection member 1022, and the like. For this, the bottom cover 1011 may be provided with a storage book 1012 having a box shape with an upper surface opened, but the embodiment is not limited thereto. The bottom cover 1011 can be combined with a top cover,
The bottom cover 1011 can be formed of a metal material or a resin material, and can be manufactured using a process such as press molding or extrusion molding. Also, the bottom cover 1011
Can include, but is not limited to, metallic or non-metallic materials with good thermal conductivity.
The display panel 1061, for example, as an LCD panel, includes first and second substrates made of transparent materials facing each other, and a liquid crystal layer interposed between the first and second substrates. A polarizing plate may be attached to at least one surface of the display panel 1061, and the present invention is not limited to such a polarizing plate attachment structure. The display panel 1061 displays information by light that has passed through the optical sheet 1051. Such a display device 1000 includes various portable terminals,
The present invention can be applied to a notebook personal computer monitor, a laptop computer monitor, a television, 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 includes, for example, a diffusion sheet, a horizontal and vertical prism sheet, and a brightness enhancement sheet.
At least one can be included. The diffusion sheet diffuses incident light, the horizontal or / and vertical prism sheet condenses incident light on a display area, and the brightness enhancement sheet reuses lost light. Improve brightness. The display panel 1061
A protective sheet may be disposed on the top, but the embodiment is not limited thereto.
Here, on the light path of the light emitting module 1031, the light guide plate 1 is used as an optical member.
041 and the optical sheet 1051, but the embodiment is not limited thereto.
The substrate 1120 and the light emitting device 100 can be defined as a light emitting module 1060. The bottom cover 1152, at least one light emitting module 1060, and an optical member 1154
Can be defined as a light unit.
At least one light emitting device 100 may be mounted on the substrate 1532. Each of the light emitting devices 100 includes at least one light emitting diode (LED: Light).
Emitting Diode) chips can be included. The LED chip includes a colored light-emitting diode that emits red, green, blue, or white colored light and ultraviolet light (
A UV light emitting diode that emits UV (Ultra Violet) may be included.
A first insulating film having an open region where a part of the plurality of metal layers is opened,
A plurality of metal layers and a resin layer disposed on the light emitting chip;
A first guide member made of a non-metallic material on the first insulating film;
A non-metallic second guide member on the second insulating film;
The first guide member is disposed around the resin layer,
The plurality of metal layers include first and second metal layers,
The light emitting chip is disposed on the first metal layer and electrically connected to the second metal layer.
A portion of the first guide member contacts the first and second metal layers;
A portion of the second guide member contacts the first metal layer;
A part of the first guide member is disposed closer to the light emitting chip than the first insulating film,
The first insulating film and the second insulating film are light emitting devices that are interconnected.
The light emitting device according to claim 1, wherein an inner side surface of the first guide member is inclined or curved.
3. The light emitting device according to claim 1, wherein the second guide member is physically separated from the second metal layer.
The light emitting device according to any one of claims 1 to 3, further comprising an adhesive layer between the first and second metal layers and the first insulating film.
5. The light emitting device according to claim 1, wherein a thickness of the first insulating film is greater than a thickness of the first and second metal layers.
The light emitting device according to claim 5, wherein the first guide member has a thickness greater than the thickness of the first and second insulating films.
The light emitting device according to claim 1, wherein the resin layer has a center portion thicker than an outer portion.
The light emitting device according to claim 1, wherein the first and second guide members include a solder resist material.
The light emitting device according to any one of claims 1 to 7, wherein the first and second guide members include a resin material or a polymer material having titanium dioxide (TiO 2 ).
The first and second insulating films are PI (polyimide) film, PET (polyethylene terephthalate) film, EVA (ethylene vinyl acetate) film, PEN (polyethylene naphthalate) film, TAC (triacetyl cellulose) film, PAI (polyamide) The light emitting device according to claim 1, comprising at least one of (imide), PEEK (polyether ether ketone), perfluoroalkoxy (PFA), polyphenylene sulfide (PPS), and a resin film.
The light emitting device according to claim 1, wherein the first and second insulating films include a phosphor.
The light emitting device according to claim 1, wherein the resin layer includes a phosphor.
The first and second insulating films support the plurality of metal layers,
The lower and side surfaces of the first and second metal layers are exposed;
The light emitting device according to any one of claims 1 to 12, wherein lower surfaces of the first and second metal layers are arranged on the same plane.
The light emitting device according to any one of claims 1 to 13, wherein a separation part between the first and second metal layers is a vacant region.
The thickness of the first and second metal layers ranges from 15 μm to 50 μm,
The light emitting device according to claim 6, wherein the first and second insulating films have a thickness in a range of 30 μm to 500 μm.
The third insulating film according to any one of claims 1 to 15, further comprising a third insulating film corresponding to a space between the plurality of metal layers and having a width wider than a space between the plurality of metal layers on a lower surface of the plurality of metal layers. The light emitting element according to item.
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