Patent Publication Number: US-10784239-B2

Title: Light emitting diode package and light emitting diode module

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This patent document is a Continuation of U.S. patent application Ser. No. 15/708,792, filed on Sep. 19, 2017, which claims priority to and the benefit of Korean Patent Application No. 10-2016-0120765, filed on Sep. 21, 2016, each of which is incorporated by reference for all purposes as if fully set forth herein. 
    
    
     BACKGROUND 
     Field 
     Exemplary embodiments relate to a light emitting diode package and a light emitting diode module, and more particularly, to a light emitting diode package that improves luminous efficacy of a light emitting diode chip, and a light emitting diode module. 
     Discussion of the Background 
     A light emitting diode (LED) refers to a compound semiconductor device that has a p-n junction of semiconductors and emits light through recombination of a small number of carriers (electrons and holes). A light emitting diode generally has low power consumption, long lifespan, and a small size. 
     Generally, a light emitting diode is provided as a chip, and a light emitting diode package is provided to package a light emitting diode chip. The light emitting diode package may include phosphors as wavelength conversion elements to realize white light. Specifically, the phosphors are disposed on the light emitting diode chip, such that white light can be realized through mixing one or more primary light emitted from light emitting diode chip and secondary light subjected to wavelength conversion through the phosphors. 
     A conventional light emitting diode package may realize white light by using phosphors (yellow phosphors), which may emit yellow white through excitation of light received from a blue light emitting diode chip. However, the light emitting diode package using the yellow phosphors alone emits light lacking a red color component, and thus, has characteristics of low color index and high color temperature. In order to solve such problems, some light emitting diode packages may employ a mixture of phosphors emitting green light (hereinafter, green phosphors) or phosphors emitting yellow light (hereinafter, yellow phosphors), and phosphors emitting red light (hereinafter, red phosphors) in a wavelength conversion part rather than using one type of yellow phosphor. 
     However, when a structure includes phosphors having different peak wavelengths mixed in the wavelength conversion part, luminous efficacy of the light emitting diode package may be significantly deteriorated. 
     Therefore, there is a need for fundamental improvement of energy conversion efficiency by phosphors for a light emitting diode package. 
     SUMMARY 
     Exemplary embodiments provide a light emitting diode package that improves wavelength conversion efficiency by preventing energy loss caused by wavelength conversion while realizing white light, and a light emitting diode module including the same. 
     Exemplary embodiments also provide a light emitting diode package that broadens a color gamut, and a light emitting diode module including the same. 
     Exemplary embodiments further provide a white light emitting diode package that prevents light loss arising from a high density of phosphors, and a white light emitting diode module including the same. 
     Exemplary embodiments also provide a light emitting diode package that improves resolution and light output to reduce power consumption, and a light emitting diode module including the same. 
     In accordance with one aspect of the present disclosure, a light emitting diode package includes a housing, a first light emitting diode chip and a second light emitting diode chip disposed in the housing, and a wavelength conversion part including a phosphor absorbing light emitted from the first light emitting diode chip and emitting light having a different wavelength than the light emitted from the first light emitting diode chip, in which the light emitted from the first light emitting diode chip emits light has a shorter wavelength than light emitted from the second light emitting diode chip, and the phosphor has a fluorescence intensity of 10 or less at a peak wavelength of light emitted from the second light emitting diode chip, with reference to a maximum fluorescence intensity of 100 at a wavelength of 425 nm to 475 nm on an excitation spectrum of the second light emitting diode chip. 
     The first light emitting diode chip and the second light emitting diode chip may emit blue light and green light, respectively. 
     The first light emitting diode chip may emit blue light, the second light emitting diode chip may emit green light, and the wavelength conversion part may emit red light. 
     The blue light may have a peak wavelength of 440 nm to 460 nm and the green light may have a peak wavelength of 515 nm to 530 nm. 
     The phosphor may include at least one of nitride phosphor, sulfide phosphor, fluoride phosphor, quantum dot phosphor, and combinations thereof. 
     The phosphor may include fluorine-based phosphor and the phosphor may have a fluorescence intensity of 5 or less at the peak wavelength of the light emitted from the second light emitting diode chip, with reference to the maximum fluorescence intensity of 100 on the excitation spectrum thereof. 
     The phosphor may be a quantum dot phosphor and comprises at least one compound semiconductor of In, Zn, S, Cd, Se, Pb, and combinations thereof. 
     Red light emitted from the wavelength conversion part may exhibit at least three peaks at a wavelength of 600 nm to 660 nm. 
     The light emitting diode package may emit white light by mixing light emitted from the first light emitting diode chip, the second light emitting diode chip, and the wavelength conversion part. 
     The light emitting diode package may have a color gamut of 95% or more with reference to an NTSC (National Television System Committee) 
     In accordance with another aspect of the present disclosure, a light emitting diode package includes a housing having a first cavity and a second cavity a first light emitting diode chip disposed in the first cavity, a second light emitting diode chip disposed in the second cavity, and a wavelength conversion part disposed in the first cavity and converting wavelengths of light emitted from the first light emitting diode chip, in which light emitted from the first light emitting diode chip emits light has a shorter wavelength than light emitted from the second light emitting diode chip, and the light emitted from the second light emitting diode chip is blocked from entering the wavelength conversion part. 
     The wavelength conversion part may further include a first transparent resin including phosphors dispersed therein, and the second cavity may include a second transparent resin not including phosphors. 
     In accordance with a further aspect of the present disclosure, a light emitting diode module includes a substrate and the light emitting diode package mounted on the substrate. 
     In accordance with an aspect of the present disclosure, a light emitting diode package includes a housing, a first light emitting diode chip and a second light emitting diode chip disposed in the housing and a wavelength conversion part including a phosphor configured to absorb light emitted from the first light emitting diode chip and emit light having a different wavelength than that emitted from the first light emitting diode chip, in which light emitted from the first light emitting diode chip has a shorter wavelength than light emitted from the second light emitting diode chip, the wavelength conversion part is configured to emit red light having a peak wavelength of 580 nm to 700 nm and exhibiting at least three peaks at a wavelength of 600 nm to 660 nm, and the light emitting diode package is configured to emit white light by mixing light emitted from the first light emitting diode chip, the second light emitting diode chip, and the wavelength conversion part. 
     In accordance with another aspect of the present disclosure, a light emitting diode module includes a housing, a first light emitting diode chip and a second light emitting diode chip disposed in the housing, and a wavelength conversion part including a phosphor configured to absorb light emitted from the first light emitting diode chip and emit light having a different wavelength than that emitted from the first light emitting diode chip, in which light emitted from the first light emitting diode chip has a shorter wavelength than light emitted from the second light emitting diode chip, the wavelength conversion part is configured to emit red light having a peak wavelength of 580 nm to 700 nm and exhibiting at least three peaks at a wavelength of 600 nm to 660 nm, and the light emitting diode package is configured to emit white light by mixing light emitted from the first light emitting diode chip, the second light emitting diode chip, and the wavelength conversion part. 
     In accordance to another aspect of the present disclosure, a light emitting diode package includes a housing including a first cavity and a second cavity, a first light emitting diode chip disposed in the first cavity, a second light emitting diode chip disposed in the second cavity, and a wavelength conversion part disposed in the first cavity and configured to convert wavelengths of light emitted from the first light emitting diode chip, in which light emitted from the first light emitting diode chip has a shorter wavelength than light emitted from the second light emitting diode chip, light emitted from the second light emitting diode chip is configured to be blocked from entering the wavelength conversion part, and the light emitting diode package is configured to emit white light by mixing light emitted from the first light emitting diode chip, the second light emitting diode chip, and the wavelength conversion part 
     According to exemplary embodiments, the light emitting diode packages can improve wavelength conversion efficiency through reduction of energy interference between phosphors. 
     In addition, according to the exemplary embodiments, the light emitting diode packages emit white light using light emitting diode chips configured to emit light having different wavelengths and thus can reduce the density of phosphors within the wavelength conversion part, thereby improving the color gamut while reducing light loss through reduction in non-luminous absorption by the phosphors. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the disclosed technology, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosed technology, and together with the description serve to describe the principles of the disclosed technology. 
         FIG. 1  is a graph depicting luminous spectrum distributions of a green phosphor and a red phosphor and a luminous spectrum distribution of a white LED. 
         FIG. 2  is a graph depicting excitation spectrum distributions and luminous spectrum distributions of a green phosphor and a red phosphor. 
         FIG. 3  and  FIG. 4  are perspective views of a light emitting diode package according to exemplary embodiments. 
         FIG. 5  and  FIG. 6  are perspective views of a light emitting diode module according to exemplary embodiments. 
         FIG. 7  is a graph depicting an excitation spectrum of a red phosphor emitting red light according to an exemplary embodiment. 
         FIG. 8  is a graph depicting an excitation spectrum of quantum dots emitting red light according to an exemplary embodiment. 
         FIG. 9  is a luminous spectrum distribution of a light emitting diode package according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS 
     Exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. However, it should be understood that the present disclosure is not limited to the following embodiments and may be embodied in different ways. Rather, the following embodiments are given by way of illustration only to provide thorough understanding of the present disclosure to those skilled in the art. 
     It should be understood that, when a layer is referred to as being “on” another layer or substrate, it can be directly formed on the other layer or substrate, or intervening layer(s) may also be present. In addition, spatially relative terms, such as “above,” “upper (portion),” “upper surface,” and the like may be understood as meaning “below,” “lower (portion),” “lower surface,” and the like according to a reference orientation. In other words, spatial orientations are to be construed as indicating relative orientations instead of absolute orientations. 
     Like elements are denoted by like reference numerals throughout the specification and drawings. In addition, it should be understood that the terms “comprise,” “include,” and/or “have(has)” as used herein, specify the presence of stated features, numerals, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numerals, steps, operations, elements, and/or components. 
     Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. 
       FIG. 1  is a graph depicting luminous spectrum distributions of a green phosphor and a red phosphor and a luminous spectrum distribution of a white LED.  FIG. 2  is a graph depicting excitation spectrum distributions and luminous spectrum distributions of a green phosphor and a red phosphor. 
     Referring to  FIG. 1 , a peak wavelength of green light is placed near 540 nm and a peak wavelength of red light is placed near 650 nm. In order to realize white light, a conventional white light emitting diode package includes a blue light emitting diode chip and a wavelength conversion part, which may include green and red phosphors that are mixed together and emit green light and red light through excitation of light received from the blue light emitting diode chip. When the green phosphors and the red phosphors are mixed, some fractions of green light emitted from the green phosphors may excite the red phosphors. 
     Accordingly, in the white light emitting diode package, light emitted from the blue light emitting diode chip is absorbed by the green phosphors and the red phosphors, which in turn emit light depending upon the wavelengths thereof, and some fractions of light emitted from the green phosphors are absorbed by the red phosphors, which in turn emit red light. Accordingly, energy conversion efficiency of the phosphors may be reduced. 
     Referring to  FIG. 2 , the excitation spectrum distribution of the red phosphor substantially overlaps the excitation spectrum distribution of the green phosphor. More particularly, the red phosphor absorbs light emitted from the blue light emitting diode chip and light emitted from the green phosphor, which may cause energy interference between the green phosphor and the red phosphor. In addition, since phosphors generally have a broad absorption wavelength band, green light emitted from the green phosphor may be absorbed again by the green phosphor. 
     Accordingly, the overall energy conversion efficiency is reduced due to conversion efficiency of blue light by the green phosphors, conversion efficiency of blue light by the red phosphors, absorption of green light by the green phosphors, and conversion efficiency of green light by the red phosphors. Moreover, since two or more types of phosphors are mixed in one wavelength conversion part, the wavelength conversion part may have a high density of the phosphors, which may cause light loss through non-luminous absorption by the phosphors. 
       FIG. 3  is a schematic perspective view of a light emitting diode package according to an exemplary embodiment. 
     Referring to  FIG. 3 , a light emitting diode package  1000  may include a housing  1 , a first light emitting diode chip  131 , a second light emitting diode chip  132 , and a wavelength conversion part  140  including phosphors  150 . 
     The housing  1  may include a cavity to which the first light emitting diode chip  131  and the second light emitting diode chip  132  are received. The housing  1  may be formed of various materials including metal, ceramic, or general plastic (polymer) materials, for example, acrylonitrile butadiene styrene (ABS), liquid crystalline polymers (LCP), polyamides (PA), polyphenylene sulfide (IPS), thermoplastic elastomers (TPE), epoxy molding compounds (EMC), or silicone molding compounds (SMC), without being limited thereto. 
     The first light emitting diode chip  131  and the second light emitting diode chip  132  may be received in the cavity of the housing  1 , and may emit blue light and green light, respectively. For example, the first light emitting diode chip  131  may emit light having a shorter wavelength than the second light emitting diode chip  132 . For the light emitting diode package  1000  to realize white light using one wavelength conversion part  140 , the first light emitting diode chip  131  may emit blue light having a peak wavelength of 440 nm to 460 nm and the second light emitting diode chip  132  may emit green light having a peak wavelength of 515 nm to 530 nm. 
     The first light emitting diode chip  131  and the second light emitting diode chip  132  may include, for example, gallium nitride semiconductors. The light emitting diode package  1000  shown in  FIG. 3  is illustrated as including two light emitting diode chips  131  and  132  received in the cavity. However, the inventive concepts are not limited thereto, and the number and arrangement of first and second light emitting diode chips  131  and  132  may be varied. 
     The wavelength conversion part  140  may include phosphors  151  that convert wavelengths of light emitted from the first light emitting diode chip  131 . The phosphors  151  may have a fluorescence intensity of 10 or less at a peak wavelength of light emitted from the second light emitting diode chip  132 , with reference to a maximum fluorescence intensity of 100 of the excitation spectrum of light emitted from the second light emitting diode chip  132 . 
     Specifically, the wavelength conversion part  140  includes the phosphors  151 , which may absorb blue light emitted from the first light emitting diode chip  131  and emit red light having a peak wavelength of 580 nm to 700 nm. The phosphors  151  may include at least one of nitride phosphors, sulfide phosphors, fluoride phosphors, quantum dot phosphors, and combinations thereof, without being limited thereto. For example, the phosphors  151  may include fluorine-based phosphors. 
     Quantum dot phosphors (QDs: quantum dot) may be a compound semiconductor including particles having a size of 2 nm to 50 nm, also referred to as nanocrystals. The quantum dot phosphors may include at least one of Group II to XVI ions, and may include binary, ternary, and quaternary materials. That is, the quantum dot phosphors may include materials containing two, three, and four different ions. For example, the quantum dot phosphors may include at least one of In, Zn, S, Cd, Se, and Pb. For example, the quantum dot phosphors may include at least one of Group II-VI or III-V compound semiconductors including CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, AlN, AlP, AlAs, InN, InP, and InAs, mixtures thereof, and composites thereof, in which the composite may include at least one of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, GaNP, GaNAs, GaPAs, AlNP, AlNAs, AlPAs, InNP, InNAs, InPAs, GaAlNP, GaAlNAs, GaAlPAs, GaInNP, GaInNAs, GaInPAs, InAlNP, InAlNAs, InAlPAs, SnS, CuInS, CuZnS, CuSnS, CuSnSe, CuSnGaS, and CuSnGaSe, without being limited thereto. 
     As such, the light emitting diode package  1000  according to an exemplary embodiment may emit white light through mixing light emitted from the first light emitting diode chip  131 , which emits blue light having a peak wavelength of 440 nm to 460 nm, the second light emitting diode chip  132 , which emits green light having a peak wavelength of 515 nm to 530 nm, and the wavelength conversion part  140 , which emits red light having a peak wavelength of 580 nm to 700 nm and includes one type of phosphors  151  to prevent interference between different types of phosphors. In this manner, energy conversion efficiency of light emitted from the light emitting diode chips may be improved. 
     On the excitation spectrum, the fluorescence intensity at a wavelength of 630 nm and the degree of light absorption by the phosphors at each wavelength may be exhibited upon irradiating the phosphors with light, while changing the wavelengths of light under the same energy condition. That is, the phosphors  151  emitting red light through absorption of blue light emitted from the first light emitting diode chip  131  are substantially prevented from absorbing green light emitted from the second light emitting diode chip  132 , thereby reducing light loss through reduction in non-luminous absorption by the phosphors  151 . 
       FIG. 4  is a schematic perspective view of a light emitting diode package according to an exemplary embodiment. 
     Referring to  FIG. 4 , a light emitting diode package  2000  includes a housing  10  having a first cavity  11  and a second cavity  12 , a first light emitting diode chip  131 , a second light emitting diode chip  132 , and a wavelength conversion part  141 . 
     The housing  10 , the first light emitting diode chip  131 , and the second light emitting diode chip  132  of the light emitting diode package  2000  may be substantially similar to those in the light emitting diode package  1000  shown in  FIG. 3 . The light emitting diode package  2000  of  FIG. 4 , however, is distinguished from the light emitting diode package  1000  of  FIG. 3 , in that the housing  10  has regions divided from each other by the first cavity  11  and the second cavity  12 , such that the first light emitting diode chip  131  and the second light emitting diode chip  132  may be received in the first cavity  11  and the second cavity  12 , respectively. 
     Specifically, the housing  10  may be divided into the first cavity  11  and the second cavity  12 , such that light emitted from the second light emitting diode chip  132  is blocked from entering the wavelength conversion part  141 . Thus, when the wavelength conversion part  141  including phosphors  152  is disposed in the first cavity  11  or the second cavity  12 , the light emitting diode package  2000  may essentially prevent non-luminous absorption by the phosphors  152 . The structure of the light emitting diode package  2000  will be described in more detail. 
     The wavelength conversion part  141  may include the phosphors  152  disposed in the first cavity  11  to convert wavelengths of light emitted from the first light emitting diode chip  131 . Specifically, the wavelength conversion part  141  includes the phosphors  152 , which can absorb blue light emitted from the first light emitting diode chip  131  to emit red light having a peak wavelength of 580 nm to 700 nm. The phosphors  152  may include at least one of nitride phosphors, sulfide phosphors, fluoride phosphors, quantum dot phosphors, and combinations thereof. The phosphors  152  in the light emitting diode package  2000  may be the same or different from the phosphors  151  in the light emitting diode package  1000  described with reference to  FIG. 3 . 
     In addition, the wavelength conversion part  141  may further include a transparent resin, in which the phosphors  152  are dispersed. The transparent resin may include at least one of silicone, epoxy, poly(methyl methacrylate) (PMMA), polyethylene (PE), and polystyrene (PS) resins, without being limited thereto. 
     The second cavity  12  may or may not include a wavelength conversion part including phosphors, depending upon a color of light to be emitted from the light emitting diode package  2000 . For example, in the light emitting diode package  2000  emitting white light, the first light emitting diode chip  131  emitting blue light and the wavelength conversion part  141  including the phosphors  152  emitting red light through absorption and wavelength conversion of the blue light may be disposed in the first cavity  11 . Further, the second light emitting diode chip  132  emitting green light may be disposed in the second cavity  12  of the light emitting diode package  2000 , on which a transparent resin containing no phosphors is disposed to form a molding portion  142 . 
     More particularly, in the light emitting diode package  2000  of  FIG. 4 , the phosphors  152  emitting red light through absorption and excitation of blue light are disposed in the first cavity  11 , and the transparent resin not containing the phosphors  152  is disposed in the second cavity  12 , in which the second light emitting diode chip  132  emitting green light is disposed. In this manner, the light emitting diode package  2000  according to an exemplary embodiment may prevent interference between different kinds of phosphors, which may occur in a conventional structure using a mixture of red light phosphors and green light phosphors, and may prevent energy loss from reabsorption of light emitted from the green light phosphors into the red light phosphors. 
       FIG. 5  and  FIG. 6  are perspective views of a light emitting diode module according to an exemplary embodiment. 
     Referring to  FIG. 5  and  FIG. 6 , the light emitting diode module according to an exemplary embodiment includes a substrate  210  and the light emitting diode packages  1000  or  2000  according to the exemplary embodiments mounted on the substrate  210 . 
     The substrate  210  is not particularly limited, and may be formed of various materials in consideration of dissipation of the light emitting diode packages  1000  or  2000  and electrical connection thereof. For example, a printed circuit board may be used as the substrate  210 . 
     For example, the light emitting diode module according to the present exemplary embodiment may emit white light by mixing light emitted from the first light emitting diode chip  131  emitting blue light having a peak wavelength of 440 nm to 460 nm, the second light emitting diode chip  132  emitting green light having a peak wavelength of 515 nm to 530 nm, and the wavelength conversion part  140  emitting red light having a peak wavelength of 580 nm to 700 nm. 
     It should be noted that although realization of white light is mainly illustrated in the above exemplary embodiments, the inventive concepts are not limited white light and may be applied to various light emitting diode packages or light emitting diode modules, which may emit mixed light using at least two types of phosphors having different peak wavelengths. 
     Experimental Example 1 
     Example 1 is the light emitting diode package  1000  manufactured according to an exemplary embodiment. Referring back to  FIG. 3 , the light emitting diode package  1000  includes a housing  1 , which receives a blue light emitting diode chip emitting blue light having a peak wavelength of about 450 nm and a green light emitting diode chip emitting green light having a peak wavelength of about 525 nm therein, and a wavelength conversion part  140  disposed in the cavity and including phosphors that emit red light through absorption and excitation of blue light. In addition, a portion of the wavelength conversion part  140  molding the cavity may include phosphors, such as YAG, LuAG, ortho-silicate, thiogallate, oxynitride, or Beta-SiAlON-based phosphors. 
     Referring to  FIG. 7  depicting an excitation spectrum of red light phosphors, and  FIG. 8  depicting an excitation spectrum of red light quantum dot phosphors, the phosphors  151  have a fluorescence intensity of 10 or less at a peak wavelength of green light (e.g., 515 nm to 530 nm) emitted from the green light emitting diode chip, with reference to a maximum fluorescence intensity of 100 (e.g., at around 470 nm) of the excitation spectrum of green light emitted from the green light emitting diode chip. 
     In addition, for the light emitting diode package according to the present exemplary embodiment, the color coordinates (CIE), light output (IV), and color gamut with reference to the NTSC (National Television System Committee) were measured, before and after formation of the wavelength conversion part including the phosphors, and measurement results are shown in Table 1 below. 
     As a comparative example, a conventional light emitting diode package was manufactured. The conventional light emitting diode package includes a blue light emitting diode chip and a wavelength conversion part including both green light phosphors and red light phosphors. For the conventional light emitting diode package, the color coordinates (CIE), light output (IV), and color gamut with reference to the NTSC (National Television System Committee) were measured, before and after formation of the wavelength conversion part including the phosphors. Measurement results are shown in Table 1 and a graph of the spectrum distribution thereof is shown in  FIG. 9 . 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 1 
               
             
            
               
                   
                   
               
               
                   
                   
                   
                 Before formation 
                 After formation 
               
               
                   
                   
                   
                 of wavelength 
                 of wavelength 
               
               
                   
                 Chip 
                   
                 conversion part 
                 conversion part 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 PKG 
                 Blue 
                 Green 
                 Phosphors 
                 CIE x 
                 CIE y 
                 IV 
                 ΔIV (%) 
                 CIE x 
                 CIE y 
                 IV 
                 ΔIV (%) 
                 NTSC 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 Comparative 
                 Blue 
                   
                 Green + 
                 0.258 
                 0.236 
                 24.7 
                 100.0% 
                 0.269 
                 0.282 
                 1.84 
                 100.0% 
                 93.2 
               
               
                 Example 
                   
                   
                 Red 
               
               
                 Example 
                 Blue 
                 Green 
                 Red 
                 0.258 
                 0.235 
                 32.6 
                 131.8% 
                 0.271 
                 0.288 
                 2.53 
                 137.4% 
                 100.2 
               
               
                   
               
            
           
         
       
     
     As shown in Table 1, it can be seen that the light emitting diode package according to an exemplary embodiment emits white light in desired color coordinates and has greater light output than the conventional light emitting diode package by 30% or more. Accordingly, the light emitting diode package according to the exemplary embodiment emits brighter light than the conventional light emitting diode package under the same power conditions and improves economic feasibility and durability through reduction in power consumption. 
     In addition, as measured with reference to the NTSC (National Television System Committee), the conventional light emitting diode package had a color gamut of 93.2%, whereas the light emitting diode package according to the exemplary embodiment had a color gamut of 100.2%, thereby achieving significant improvement in resolution. 
     Although certain exemplary embodiments have been described herein, it should be understood by those skilled in the art that these embodiments are given by way of illustration only, and that various modifications, variations, and alterations can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be limited only by the accompanying claims and equivalents thereof