KR20190077289A - Light emitting device package and lighting apparatus - Google Patents

Abstract

An embodiment relates to a light-emitting device package and a lighting device, which can minimize a wavelength range harmful to the human body and maximize a wavelength range beneficial to the human body. The light-emitting device package, according to the embodiment, comprises: a package body (11); a light-emitting device (25) disposed on the package body (11); a molding member (41) disposed on the light-emitting device (25); and a phosphor (30) disposed in the molding member (41). The ratio of the intensity of a wavelength spectrum of a first wavelength region, which is 415 to 455 nm, of the light-emitting device package (101) to the intensity of a wavelength spectrum of a solar light source of the first wavelength region can be 75% or less. The ratio of the intensity of a wavelength spectrum of a second wavelength region, which is 465 to 495 nm, of the light-emitting device package (101) to the intensity of a wavelength spectrum of the solar light source of the second wavelength region can be 60% or more. In addition, the intensity of the wavelength spectrum of the first wavelength region, which is 415 to 455 nm, of the light-emitting device package (101) can be greater than the intensity of the wavelength spectrum of the second wavelength region, which is 465 to 495 nm. The phosphor (30) includes a first phosphor (31), which is a green phosphor, and a second phosphor (32), which is a red phosphor, thereby providing a white light source by using a light-emitting wavelength of the light-emitting device (25) as an excitation wavelength.

Description

[0001] LIGHT EMITTING DEVICE PACKAGE AND LIGHTING APPARATUS [0002]

An embodiment relates to a light emitting device package and a lighting apparatus.

The light emitting device may be formed by combining a group III-V element or a group II-VI element in the periodic table with a pn junction diode in which electric energy is converted into light energy, So that various colors can be realized.

For example, nitride semiconductors have received great interest in the development of optical devices and high power electronic devices due to their high thermal stability and wide bandgap energy. Particularly, a blue light emitting element, a green light emitting element, an ultraviolet (UV) light emitting element, and a red (RED) light emitting element using a nitride semiconductor are commercially available and widely used.

Such a light emitting device can realize various colors such as red, green, blue and ultraviolet rays, and it is possible to realize white light having high efficiency by combining various light using a fluorescent material or emitting light. Power consumption, semi-permanent life span, fast response speed, safety, and environmental friendliness.

On the other hand, as a method of implementing white light, there are a method of utilizing a single chip and a method of utilizing a multi chip. For example, in the case of implementing white light by a single chip, a method of using light emitted from a blue LED or an ultraviolet (UV) LED and exciting at least one of the phosphors using the light to obtain white light is used. Or a method in which three kinds of chips of RGB (Red, Green, Blue) are assembled in a case of a multi-chip type.

There are B cones, G cones and R cones in the human retina. The size of each electric signal varies depending on how much the three cones are excited by the external light, So as to judge the color.

Meanwhile, in the prior art, blue LEDs having a center wavelength of about 440 nm to 450 nm are mainly used to increase energy efficiency of a light source.

For example, FIG. 1A is an example of a wavelength spectrum (C1) of a light emitting device package according to the first prior art, with respect to a light emitting wavelength S of the sunlight. 1A, the intensity ratio HC of the first wavelength range H of about 415 nm to 455 nm occupies a larger area than the intensity ratio BC of the second wavelength range B of about 465 nm to 495 nm.

For example, in the prior art, the intensity HC ratio in the first wavelength range (415 to 455 nm) is about 98% and the ratio of the intensity BC in the second wavelength range (465 to 495 nm) Was only about 54%.

FIG. 1B also shows the wavelength spectrum of the green phosphor G1 and the wavelength spectrum of the red phosphor R1, which are employed in the light emitting device package according to the first prior art.

According to recent studies, when human visual cells are exposed to the light of the first wavelength range (H) of about 415 nm to 455 nm, they show an eye-hazarous effect, the negative effects accumulate over a lifetime, It has been shown to cause damage to the human eye, leading to age-related macular degeneration. Macular degeneration is a major cause of loss of vision in old age, but it also occurs in younger age groups. It is said that it can not be restored to its previous vision.

In order to reduce the hazardousness of the first wavelength range (H) of 415 nm to 455 nm, in some studies, there is an attempt to use a filter in front of the LED light source or wear a filter equipped with a filter. However, In addition to the wavelength range harmful to the eye of the first wavelength range H of 455 nm, the blue range necessary for forming the white light source and the second wavelength range B of about 465 nm to 495 nm beneficial for adjusting the circumference of the human body, Is also being removed.

FIG. 2 is a special CRI data of the light emitting device package according to the first prior art. According to this, the value of R9 (pure red), which is one of the indexes of the quality of the light source, is -11.9, There is no problem.

FIG. 3 is a graph showing the wavelength spectrum of the green phosphor G2, the wavelength spectrum of the second red phosphor R2, the wavelength spectrum of the third red phosphor R3, Wavelength spectrum together. Generally, a phosphor having a longer wavelength of PL (light emission) exhibits a lower light efficiency than a phosphor having a shorter wavelength, resulting in a decrease in the speed of light.

The second prior art can not satisfy the industry requirement of R9 > 0 with only the second red phosphor R2 (610 nm peak wavelength) having a relatively short wavelength, so that the third red phosphor having a long wavelength ) (Peak wavelength of 625 nm) were used together to improve the R9 index while taking loss of light flux.

Accordingly, the prior art has a limitation of technical contradiction which can not simultaneously satisfy the technical characteristic of the light flux improvement and the technical characteristic of the Special CRI index improvement (for example, R9 > 0).

Embodiments provide a light emitting device package and a lighting device that can minimize a wavelength range harmful to a human body and maximize a wavelength range beneficial to a human body.

Also, the embodiment is intended to provide a light emitting device package and a lighting device which can simultaneously satisfy the technical characteristics of the light flux enhancement and the technical characteristics such as Special CRI index improvement (for example, R9 > 0).

The light emitting device package 101 according to the embodiment includes a package body 11, a light emitting device 25 disposed on the package body 11, a molding member 41 disposed on the light emitting device 25, And a phosphor 30 disposed in the molding member 41. [

The intensity ratio of the wavelength spectrum of the first wavelength range of 415 nm to 455 nm of the light emitting device package 101 may be 75% or less of the intensity of the wavelength spectrum of the reference Ref light of the first wavelength range.

The intensity ratio of the wavelength spectrum of the second wavelength range from 465 nm to 495 nm of the light emitting device package 101 may be 60% or more of the intensity of the wavelength spectrum of the reference wavelength band of the second wavelength range.

The intensity ratio of the wavelength spectrum of the second wavelength range from 465 nm to 495 nm may be larger than the intensity ratio of the wavelength spectrum of the first wavelength range of 415 nm to 455 nm of the light emitting device package 101.

The intensity ratio of the wavelength spectrum of the first wavelength range of the light emitting device package 101 is set such that the ratio of the intensity of the reference light of the first wavelength range to the intensity of the wavelength spectrum of the first wavelength range of the light emitting device package May be a ratio to the intensity of the wavelength spectrum.

And the intensity ratio of the wavelength spectrum of the second wavelength range of the light emitting device package is larger than the intensity of the wavelength spectrum of the reference wavelength band of the second wavelength range . ≪ / RTI >

The phosphor 30 includes a first phosphor 31 which is a green phosphor and a second phosphor 32 which is a red phosphor and can realize a white light source with an excitation wavelength of the emission wavelength of the light emitting element 25. [

For example, the phosphor 30 includes a first phosphor 31 having a luminescent center wavelength of 515 nm to 570 nm and a second phosphor 32 having a luminescent center wavelength of 580 nm to 670 nm, A white light source can be realized with an excitation wavelength as an excitation wavelength.

The phosphor 30 includes a first phosphor 31 having a center wavelength of 515 nm to 570 nm, a second phosphor 32 having a center wavelength of 580 nm to 670 nm, and a third phosphor 33 having a center wavelength of 490 nm to 505 nm. A white light source can be realized with an excitation wavelength of the light emitting device 25.

The illumination device according to the embodiment may include a light emitting unit having the light emitting device package.

A light emitting device package according to an embodiment includes a package body; A light emitting element disposed on the package body; A molding member disposed on the light emitting element; Wherein a ratio of an intensity of a wavelength spectrum in a first wavelength range of 415 nm to 455 nm of the light emitting device package is greater than a ratio of an intensity of a reference wavelength of the first wavelength range, And the intensity ratio of the wavelength spectrum of the second wavelength range of 465 nm to 495 nm of the light emitting device package is 60% or more of the intensity of the wavelength spectrum of the reference wavelength band of the second wavelength range .

Embodiments can provide a light emitting device package and a lighting device that can minimize a wavelength range harmful to a human body and maximize a wavelength range beneficial to a human body.

Also, the embodiment can provide a light emitting device package and a lighting device capable of overcoming a technical contradiction at the same time by satisfying the technical characteristic of luminous flux enhancement and the special CRI indicator improvement (for example, R9 > 0).

Figs. 1A and 1B illustrate examples of wavelength spectrums of a light emitting device package according to a first prior art. Fig.
2 is a CRI data of a light emitting device package according to the first prior art.
3 is a diagram illustrating a wavelength spectrum of a light emitting device package according to a second prior art.
4 is a sectional view of a light emitting device package according to the first embodiment;
5A and 5B are diagrams illustrating exemplary wavelength spectrums of the light emitting device package according to the first embodiment.
6 is a CRI data of the light emitting device package according to the first embodiment.
7A to 7C are wavelength spectrum comparison data of the light emitting device package according to the first embodiment and the first prior art.
8 is a sectional view of a light emitting device package according to the second embodiment.
FIGS. 9A and 9B illustrate examples of wavelength spectrums of the light emitting device package according to the second embodiment and the third prior art; FIG.
10 is an exploded perspective view of a lighting apparatus according to an embodiment.

In the description of the embodiments, it is to be understood that each layer (film), area, pattern or structure may be referred to as being "on" or "under" the substrate, each layer Quot; on "and" under "are intended to include both" directly "or" indirectly " do. In addition, the criteria for the top, bottom, or bottom of each layer will be described with reference to drawings, but the embodiment is not limited thereto.

(Example)

4 is a cross-sectional view of the package 101 of the light emitting device according to the first embodiment.

4, at least one of the body 11, the plurality of lead frames 21 and 23, the light emitting element 25, the phosphor 30, and the molding member 41 is provided in the light emitting device package 101 of the embodiment . ≪ / RTI >

For example, the light emitting device package 101 of the embodiment includes a body 11, a plurality of lead frames 21, 23 disposed on the body 11, and a plurality of lead frames 21, And a molding member 41 disposed on the light emitting device 25 and having a phosphor 30.

The body 11 may be formed of a material having a reflectivity higher than that of the light emitted by the light emitting device 25, such as a material having a reflectance of 70% or more. The body 11 may be defined as a non-transparent material when the reflectance is 70% or more.

The body 11 may be formed of a resin-based insulating material, for example, a resin material such as polyphthalamide (PPA). Alternatively, a metal oxide may be added to the body 11 in a resin material such as epoxy or silicon, and the metal oxide may include at least one of TiO ₂ , SiO ₂ , and Al ₂ O ₃ .

The body 11 may include a silicone-based material, an epoxy-based material, or a plastic material, and may be formed of a thermosetting resin, or a material having high heat resistance and high light resistance.

In the body 11, an acid anhydride, an antioxidant, a release agent, a light reflector, an inorganic filler, a curing catalyst, a light stabilizer, a lubricant, and titanium dioxide may be selectively added.

The body 11 may be formed of at least one member selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, the body 11 may be formed by mixing an epoxy resin composed of triglycidyl isocyanurate, hydrogenated bisphenol A diglycidyl ether or the like and an epoxy resin such as hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride 4-methylhexahydro (1,8-Diazabicyclo (5,4,0) undecene-7) as a curing accelerator in an epoxy resin and ethylene glycol, titanium oxide pigment and glass fiber as a cocatalyst were added to the epoxy resin , And a solid epoxy resin composition which is partially cured by heating to be B-staged can be used. However, the present invention is not limited thereto.

The embodiment can reduce the light transmitted through mixing the light-blocking material or the diffusing agent in the body 11. [ In order to have a predetermined function, the body 11 may be formed by appropriately mixing at least one member selected from the group consisting of a diffusing agent, a pigment, a fluorescent substance, a reflective substance, a light shielding substance, a light stabilizer and a lubricant in a thermosetting resin can do.

The body 11 may include a cavity 15 which is recessed at a predetermined depth from an upper surface of the body 11 and is opened at an upper portion. The cavity 15 may be formed in the form of a concave cup structure, an open structure, or a recess structure, but is not limited thereto.

The cavity 15 has a width that gradually increases as it goes up, so that the light extraction efficiency can be improved.

A plurality of lead frames, for example, first and second lead frames 21 and 23, may be disposed on the body 11. The first and second lead frames 21 and 23 may be disposed on the bottom of the cavity 15 and the outer sides of the first and second lead frames 21 and 23 may be connected to the body 11 And may be exposed on at least one side of the body 11. The lower portions of the first lead frame 21 and the second lead frame 23 may be exposed to a lower portion of the body 11 and may be mounted on a circuit board to receive power.

As another example of the first and second lead frames 21 and 23, at least one or both of the first and second lead frames 21 and 23 may be formed in a concave cup- Or recessed grooves or holes for engagement with the body 11, but are not limited thereto. The light emitting device 25 may be disposed in the concave cup shape, but the present invention is not limited thereto.

The first lead frame 21 and the second lead frame 23 are made of a metal material such as titanium, copper, nickel, gold, chromium, tantalum, And may include at least one of tantalum (Ta), platinum (Pt), tin (Sn), silver (Ag), and phosphorous (P).

The light emitting device 25 may be disposed on the first lead frame 21 and the light emitting device 25 may be bonded to the first lead frame 21 as a bonding member. The light emitting device 25 may be connected to at least one of the first and second lead frames 21 and 23 by a connection member 27, but the present invention is not limited thereto. The connecting member 27 may include a wire made of a conductive material such as a metal.

The light emitting device 25 may include at least one of a group II-VI compound and a group III-V compound. The light emitting device 25 may be formed of a compound selected from the group consisting of, for example, GaN, AlGaN, InGaN, AlInGaN, GaP, AlN, GaAs, AlGaAs, InP and mixtures thereof.

A molding member 41 may be disposed in the cavity 15 and the molding member 41 may include a phosphor 30 according to an embodiment of the present invention. The phosphor 30 may include a fluorescent material that emits different peak wavelengths.

For example, the phosphor 30 may include, for example, a first phosphor 31 and a second phosphor 33 that emit different peak wavelengths. The first phosphor 31 may include one or more kinds of phosphors. For example, the first phosphor 31 may have a peak wavelength emitted from the light emitting element 25 as an excitation wavelength, and may emit green light having a first peak wavelength, . ≪ / RTI > The second phosphor 33 emits a second peak wavelength, for example, a red peak wavelength, with the light emitted from the light emitting device 25 as an excitation wavelength.

As described above, the first technical object of the embodiment is to provide a light emitting device package and a lighting device that can minimize a wavelength range harmful to a human body and maximize a wavelength range beneficial to a human body. Further, Is to provide a light emitting device package and a lighting device capable of simultaneously satisfying technical characteristics of luminous flux enhancement and special CRI index improvement (for example, R9 > 0).

The embodiment effectively solves the first technical problem and the second technical problem which will be described below, and the technical solution and the technical effect will be described in detail.

5A is an exemplary view of a wavelength spectrum E1 and a solar spectrum S of the light emitting device package according to the first embodiment.

FIG. 5B is a graph showing the wavelength spectrum E1 of the light emitting device package according to the first embodiment, the wavelength spectrum GE1 of the first phosphor and the wavelength spectrum RE1 of the second phosphor used therein.

In this first embodiment, the first phosphor 31 having a PL peak wavelength of 535 nm and the second phosphor 32 having a PL peak wavelength of 610 nm in the red wavelength region are used in the green wavelength region and the color coordinates (0.3535, 0.3721) and a white light source having a CCT of 4780K, but the present invention is not limited thereto.

In the prior art, the intensity ratio of the first wavelength range (415 to 455 nm) (H), which is harmful to the eyes, is high and the intensity ratio of the second wavelength range (465 to 495 nm) .

For example, referring to FIG. 1A, in the prior art, the intensity HC ratio in the first wavelength region (415 to 455 nm) region is about 98%, and the second wavelength region (465 to 495 nm) (BC) ratio was only about 54%.

On the other hand, in order to solve the technical problem, the embodiment of the present invention provides a light-emitting device package 101 having a light-emitting device package 101 having a first wavelength range HE (wavelength) of 465 nm to 495 nm, ) Ratio can be controlled to be larger.

For example, in the embodiment, the intensity (HE) ratio of the wavelength spectrum of the first wavelength range with the emission wavelength of 415 nm to 455 nm of the light emitting device package 101 is greater than the intensity of the wavelength spectrum of the sunlight source of the first wavelength range by 75% And the intensity (BE) of the wavelength spectrum of the second wavelength range in which the emission wavelength of the light emitting device package 101 is 465 nm to 495 nm is 60% of the intensity of the wavelength spectrum of the solar light source of the second wavelength range, Or more. For example, the intensity ratio of the wavelength spectrum of the second wavelength range of 465 nm to 495 nm of the light emitting device package 101 may be 100% or more of the intensity of the wavelength spectrum of the solar light source of the second wavelength range.

For example, the intensity (HE) ratio of the wavelength spectrum of the first wavelength range of 415 nm to 455 nm of the light emitting device package 101 can be lowered to about 32% of that of the sunlight while the second wavelength range of 465 nm to 495 nm The intensity ratio (BE) of the wavelength spectrum of the light source can be controlled to about 104% of that of the sunlight.

Furthermore, the embodiment can improve the intensity (BE) ratio of the wavelength spectrum of the second wavelength range from 465 nm to 495 nm to about 148% of the sunlight.

According to the embodiment, the light intensity of the second wavelength region (465 to 495 nm) (B) is increased compared with that of the sunlight. The light of the second wavelength region (B) is an area necessary for various metabolic activities of the human body For example, it is necessary for the reflex reaction of the pupil contraction or relaxation to protect the eyes. It is necessary for the circadian entrainment of the human body, it helps the sleep control by controlling melatonin, and the effect of relieving depression Alertness and concentration are strengthened, and accordingly, it has a beneficial effect of improving work ability, learning ability, and memory.

Accordingly, according to the embodiment, it is possible to provide a light emitting device package and a lighting device that can minimize a wavelength range (415 to 455 nm) harmful to a human body and maximize a wavelength range (465 to 495 nm) useful for a human body.

6 is special CRI data of the light emitting device package according to the first embodiment.

As described above, the prior art can not satisfy the industry requirement of R9 > 0 only with the relatively short wavelength second red phosphor R2 (610 nm peak wavelength), so that the third long wavelength Red phosphor (R3) (peak wavelength of 625 nm) was used together to improve the R9 index while taking loss of light.

Accordingly, the prior art has a limitation of technical contradiction which can not simultaneously satisfy the technical characteristic of the light flux enhancement and the technical characteristic of the Special CRI index improvement (for example, R9 > 0).

According to the light emitting device package according to the embodiment, even when the second phosphor 32, which is a high efficiency short wavelength red phosphor, is used, the value of R9 is significantly increased from -11.9 to 2.7 in the prior art.

Accordingly, the embodiment can provide a light emitting device package and a lighting device capable of overcoming a technical contradiction at the same time by satisfying a technical characteristic of luminous flux enhancement and a special CRI index improvement (for example, R9 > 0).

7A to 7C are reflectance curves of the light emitting device package according to the first embodiment and the first related art. Based on this, the technical characteristics of light flux enhancement and the improvement of Special CRI index (for example, R9 > 0), which will overcome the technological contradiction.

Referring to FIG. 7A, TCS09 reflectance (T) is one of the standard CRI samples for CRI calculations, Strong red (appearance under daylight), SR is Ref photoreflectance curve, And CR is the reflectance curve of the prior art.

In order to increase the value of R9 in the embodiment, reflection light similar to Ref sunlight reflection (SR) should be able to be emitted. Based on this, it will be compared with the prior art.

7A, Ref. The comparison of the reflectance (CR) of the first prior art and the reflectance (ER) of the embodiment with respect to the sunlight reflectance (SR) is shown in the first example in the second wavelength range (465 nm to 495 nm) The reflection light is similar to the sunlight by the A3 region and the reflected light is similar to the sunlight by the B region in the red phosphor emission wavelength region and the R9 value is increased to -11.9 To 2.7, which was remarkably increased.

Referring to FIG. 7B, in the second wavelength region (465 nm to 495 nm), as the reflection light region A2 of the embodiment is improved as compared with the reflection light region A1 of the first prior art, Made more similar.

Referring to FIG. 7C, as the reflected light CR of the first related art is improved to the reflected light ER of the embodiment in the red fluorescent light emitting wavelength region, the reflected light becomes more similar to the sunlight by the B region.

Accordingly, unlike the prior art, the embodiment does not use the second RED phosphor, which is a long wavelength, so that the luminous flux is improved rather than the reduction of the luminous flux, and the technical characteristics such as Special CRI index improvement (for example, R9> 0) A light emitting device package and a lighting device capable of overcoming technical contradiction can be provided.

Further, according to the embodiment, it is possible to provide a light emitting device package and a lighting device capable of implementing illumination Middle CRI (Ra> 80) or High CRI (Ra> 90).

Referring again to FIGS. 4 and 5B, the embodiment includes a first phosphor 31, which is a green phosphor, and a second phosphor 32, which is a red phosphor, so that the emission wavelength of the light emitting element 25 is a white light You can implement a circle.

In the embodiment, the first phosphor 31, which is a green phosphor, can be formed at a higher ratio than the second phosphor 32, which is a red phosphor. For example, the relative ratio of the first phosphor 31, which is a green phosphor and the second phosphor 32, which is a red phosphor may be 85 wt% to 95 wt%: 5 wt% to 15 wt%, but is not limited thereto.

In the embodiment, the ratio of the phosphor to the molding member 41 may be 20 wt% to 40 wt%, but is not limited thereto.

For example, the first phosphor 31 may have a luminescent center wavelength of 515 nm to 570 nm. For example, the first fluorescent material 31 is (Y, Gd, Lu, Tb) _3-x (Al, Ga) ₅ O _12: Ce _x, (Mg, Ca, Sr, Ba) ₂ SiO _4: Eu _{, (Ca, Sr) 3 SiO} 5: Eu, (La, Ca) 3-x Si 6 N 11: Ce x, α-SiAlON: Eu, β-SiAlON: Eu, Ba 3 Si 6 O 12 N 2: Eu _{, Ca 3 (Sc, Mg)} 2 Si 3 O 12: Ce, CaSc 2 O 4: Eu, BaAl 8 O 13: Eu, (Ca, Sr, Ba) Al 2 O 4: Eu, (Sr, Ca, Ba ) (Al, Ga, In) 2 S 4: Eu, (Ca, Sr) 8 (Mg, Zn) (SiO 4) 4 C l2: Eu / Mn, (Ca, Sr, Ba) 3 MgSi 2 O 8: Eu / Mn, (Ca, Sr, Ba) ₂ (Mg, Zn) Si ₂ O ₇ : Eu, Zn ₂ SiO ₄ : Mn, (Y, Gd) BO ₃ : Tb, ZnS: Cu, : Ag, Cl / Al, ( Sr, Ca) 2 Si 5 N 8: Eu, (Li, Na, K) 3 ZrF 7: Mn, (Li, Na, K) 2 (Ti, Zr) F 6: Mn Eu, (Y, Gd) BO ₃ : Eu, (Y, Gd), (Ca, Sr, Ba) (Ti, Zr) F ₆ : Mn, Ba _0.65 Zr _0.35 F _2.7 : Mn, _{) (V, P) O 4} : Eu, Y 2 O 3: Eu, (Sr, Ca, Ba, Mg) 5 (PO 4) 3 Cl: Eu, (Ca, Sr, Ba) MgAl 10 O 17: Eu , (Ca, Sr, Ba) Si 2 O 2 N 2: Eu, 3.5MgO 0.5MgF and ₂ and GeO _2: there is one kind or two or more from among Mn, etc. may be selected.

The first fluorescent material 31 may include a quantum dot, and the quantum dot may include a II-VI compound or a III-V compound semiconductor, and may emit green light. The quantum dot is, for example, ZnS, ZnSe, ZnTe, CdS , CdSe, CdTe, GaN, GaP, GaAs, GaSb, InP, InAs, In, Sb, AlS, AlP, AlAs, PbS, PbSe, Ge, Si, CuInS 2, CuInSe _2, and the like, and combinations thereof.

The second phosphor 33 emits a second peak wavelength, for example, a red peak wavelength, with the light emitted from the light emitting device 25 as an excitation wavelength. The second phosphor (32) may have a luminescent center wavelength of 580 nm to 670 nm.

The second phosphor 33 may be a compound phosphor such as (Ca, Sr) S: Eu ²⁺ or a nitride-based phosphor such as Ca _1-x AlSiN ₃ : Eu ²⁺ _x And may include a phosphor. For example, the second phosphor 32 may have a composition of (Sr, Ca) _1-x AlSiN ₃ : Eu ²⁺ _x (0.01? X? 0.3), but the present invention is not limited thereto.

The active material of the second fluorescent material 32 may be a tetravalent transition metal ion such as Mn ⁴⁺ or a metal ion selected from various rare earth ions and transition metal ions. For example, Eu ²⁺ _, Ce ³⁺ , Trivalent rare earth metal ions such as Pr ³⁺ , Nd ³⁺ , Sm ³⁺ , Eu ³⁺ , Gd ³⁺ , Tb ³⁺ , Dy ³⁺ , Ho ³⁺ , Er ³⁺ , Tm ³⁺ , Yb ³⁺ , Divalent rare earth metal ions such as Sm ²⁺ , Eu ²⁺ and Yb ²⁺ , divalent transition metal ions such as Mn ^2+, and trivalent transition metal ions such as Cr ³⁺ and Fe ³⁺ . For example, the second phosphor 32 may be K ₂ Si _1-x F ₆ : Mn ⁴⁺ _x , but is not limited thereto.

8 is a cross-sectional view of a light emitting device package 102 according to the second embodiment.

The second embodiment can employ the technical features of the first embodiment.

For example, the light emitting device package 102 according to the second embodiment includes a package body 11, a light emitting element 25 disposed on the package body 11, , And a phosphor 30 disposed in the molding member 41. The phosphor may be a phosphor or a phosphor.

The intensity ratio of the wavelength spectrum of the second wavelength range from 465 nm to 495 nm may be larger than the intensity ratio of the wavelength spectrum of the first wavelength range of 415 nm to 455 nm of the light emitting device package 102.

Hereinafter, the main features of the second embodiment will be mainly described.

 In the second embodiment, the phosphor 30 includes a first phosphor 31 having a center wavelength of 515 nm to 570 nm, a second phosphor 32 having a center wavelength of 580 nm to 670 nm, and a second phosphor 32 having a center wavelength of 490 nm to 505 nm. A white light source may be implemented with an excitation wavelength of the light emitting device 25 including the light emitting device 33. [

For example, the composition of the third phosphor 33 is (Ba, Mg) _3-a Si _{6 -b} O _3.5 (a), and the third phosphor 33 having a center wavelength of 490 nm to 505 nm may be a cyan phosphor. _{-c N 8.5-d (Li,} Cl, F, P) 1-e: Eu 2+ a, (Ba, Mg, Ca, Sr) 3-a Si 6 O 3. N 8: Eu 2+ a, ( Ba, Mg, Ca, Sr) _1-a Si ₂ O _2. N ₂ : Eu ²⁺ _a .

In the embodiment, the first phosphor 31, which is a green phosphor, can be formed at a higher ratio than the second phosphor 32, which is a red phosphor. Further, in the embodiment, the phosphor composition of the third fluorescent material 33, which is a cyan fluorescent material, can be formed at a lower rate than that of the second fluorescent material 32 which is a red fluorescent material.

For example, the relative ratios of the first phosphor 31 as a green phosphor, the second phosphor 32 as a red phosphor, and the third phosphor 33 as a cyan phosphor are 70 wt% to 80 wt%: 10 wt% to 20 wt%: 5 wt% % To 15 wt%, but is not limited thereto.

9A is a diagram illustrating a wavelength spectrum E2 of the light emitting device package according to the second embodiment and a wavelength spectrum C3 of the light emitting device package according to the third prior art. In the light emitting device package according to the second embodiment, the CCT may be 5164K, (Cx, Cy) = (0.3403, 0.3426), but is not limited thereto.

According to the second embodiment, it is possible to provide a light emitting device package and a lighting device capable of minimizing a harmful wavelength range (415 to 455 nm) (H) and maximizing a wavelength range (465 to 495 nm) (B) have.

Also, the second embodiment can provide a light emitting device package and a lighting device capable of overcoming a technical contradiction at the same time by satisfying the technical characteristics of luminous flux enhancement and the special CRI index improvement (for example, R9 > 0) .

 Furthermore, the second embodiment has an advantageous technical effect that is improved as compared with the first embodiment, as described below.

9B is a graph showing the wavelength spectrum (GE2) of the first phosphor, the wavelength spectrum (RE2) of the second phosphor, and the wavelength spectrum (FIG. 9B) of the third phosphor used in the light emitting device package according to the second embodiment, CE) together.

According to the second embodiment, there is an advantageous technical effect of further increasing (BC) the intensity ratio of the second wavelength range (465 to 495 nm) which is advantageous to the human body when the third fluorescent material 33 which is the cyan fluorescent material is used together.

For example, the second embodiment can improve the intensity (BE) ratio of the wavelength spectrum of the second wavelength range from 465 nm to 495 nm to about 180% of the sunlight.

The light emitting device according to the embodiment can be applied to a lighting unit, a display device, a backlight unit, a pointing device, a lamp, a streetlight, a vehicle lighting device, a vehicle display device, a smart watch, but is not limited thereto.

10 is an exploded perspective view of a lighting apparatus according to an embodiment.

The lighting apparatus according to the embodiment may include a cover 2100, a light source module 2200, a heat discharger 2400, a power supply unit 2600, an inner case 2700, and a socket 2800. Further, the illumination device according to the embodiment may further include at least one of the member 2300 and the holder 2500. The light source module 2200 may include a light emitting device or a light emitting device package according to the embodiment.

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 the upper surface of the heat discharging body 2400 and has guide grooves 2310 through which the plurality of light source portions 2210 and the connector 2250 are inserted.

The holder 2500 blocks the receiving groove 2719 of the insulating portion 2710 of the inner case 2700. Therefore, the power supply unit 2600 housed in the insulating portion 2710 of the inner case 2700 is sealed. The holder 2500 has a guide protrusion 2510.

The power supply unit 2600 may include a protrusion 2610, a guide 2630, a base 2650, and an extension 2670. The inner case 2700 may include a molding part together with the power supply part 2600. The molding part is a hardened portion of the molding liquid so that the power supply unit 2600 can be fixed inside the inner case 2700.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Accordingly, the contents of such combinations and modifications should be construed as being included in the scope of the embodiments.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. It can be seen that the modification and application of branches are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

The package body 11, the light emitting element 25, the molding member 41,
The phosphor 30, the first phosphor 31, the second phosphor 32,

Claims (1)

A package body;
A light emitting element disposed on the package body;
A molding member disposed on the light emitting element;
And a phosphor disposed in the molding member,
The intensity ratio of the wavelength spectrum of the first wavelength range of 415 nm to 455 nm of the light emitting device package is 75% or less of the intensity of the wavelength spectrum of the reference Ref light source of the first wavelength range,
Wherein the intensity ratio of the wavelength spectrum in the second wavelength range from 465 nm to 495 nm in the light emitting device package is 60% or more of the intensity in the wavelength spectrum of the reference solar light source in the second wavelength range.

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