KR20150040139A - Filter for improving color rendering property of led and improving method of color rendering property for led using the same - Google Patents

Abstract

The present invention relates to a filter for improving the color rendering property of an LED, an LED lamp including the same, and a method of improving the color rendering property for an LED using the same. The filter has a regularly stereoscopic pattern made of a transparent resin which includes a red fluorescent body formed on at least one surface of the inner or outer surface of a flat transparent matrix. The color rendering property can be improved by increasing a red rate without the transition of dominance wavelength or remarkable deterioration of color temperature of white LED. Thereby, illumination light similar to natural light can be secured simply and efficiently.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a filter for enhancing color rendering of an LED, an LED lamp including the same, and a method for improving LED color rendering using the same. BACKGROUND ART [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for improving the color rendering property of an LED (Light Emitting Diode), an LED lamp including the same, and a method of improving the color rendering property using the LED lamp. More particularly, A filter for improving the color rendering property of a white LED for improving the color rendering property and an LED lamp having an improved color rendering property including the filter and a red color ratio of the white LED without a significant color temperature shift or a dominant wavelength transition To improve a color rendering property of a white LED, which can improve a color rendering property of a white LED.

An LED is a device that emits light of a predetermined wavelength by forming a small number of injected carriers (electrons or holes) by using a pn junction structure of a semiconductor and recombines them. The LED includes a red light emitting device using GaAsP or the like, A light emitting element, and a blue light emitting element using an InGaN / AlGaN double hetero structure are known.

The LED has a relatively low power consumption due to its high light conversion efficiency. It is suitable for miniaturization, thinness, and light weight because it has a relatively low power consumption and is light in size. It is easy to expand and install, and the reduction until the luminance reaches about 80% The lifespan of the life span has a semi-permanent lifetime of about 100,000 hours for a blue, purple or ultraviolet LED, an extremely long lifetime of about 30,000 hours for a white LED, no thermal or discharge luminescence, Is widely used for indoor and outdoor lighting due to its advantages of being less expen- sive, less impact on the environment, less impact on the environment, less damage to the optic nerve, In particular, high-brightness LEDs that solve the problem of low brightness, which was a common problem of conventional LEDs, The use and the use place thereof are rapidly expanding.

In particular, white LEDs are very useful for indoor and outdoor advanced lighting, and their frequency of use is rapidly increasing.

Today widely white LED of the practical application the most typical form of a yellow phosphor in the InGaN-based blue LED by coating a (usually yttrium-aluminum _{garnet:: Y 3 Al 5 O 12} Ce, YAG -based compound), or molding the blue LED Excites the YAG yellow phosphor to complementarily couple the blue light having the narrow peak of the blue LED and the yellow light having the broad peak of the YAG yellow phosphor to the human eye White light.

However, since this white light is a mixture of two wavelengths of light which are not completely complementary but only a part of the spectrum in the visible light region, the color rendering index (CRI or Ra) is 60 to 75, The blue LED has the highest efficiency in the excitation light source of about 405 nm. On the other hand, the YAG phosphor is generally excited to the blue light of 450 to 460 nm, so that the luminance is generally low.

Accordingly, in order to solve the problems of the white LED by the blue LED and the YAG-base phosphor, the white LED of the nearest one uses a high-brightness UV LED having a wavelength of 250 to 390 nm as an excitation light source, Although a purple LED is used and various combinations of red, green and blue phosphors are used to realize a white light close to the natural color of three wavelengths having a high color rendering index of 80 to 89, blue and green phosphors exhibit satisfactory luminous efficiency There is a problem that the light emitting efficiency of the red phosphor is so low that further higher color rendering property can not be imparted and it is still not satisfactory enough.

As factors affecting the characteristics of the white light emitted from the white LED device, for example, the intensity of the emitted light from the LED, the suitability of the emitted light from the LED and the fluorescence converted by the phosphor, the composition and content of the phosphor, State and the like. Emission light is considerably influenced by these factors. Particularly, recent warm white LEDs, cold white LEDs, and main white LEDs are classified into various types of phosphors By changing the combination suitability of the light.

Conventionally, a typical example for improving the color rendering property of the LED is a mixed light type LED package structure which improves the color rendering property and the luminance described in Korean Patent No. 1073696 (Registered on October 10, 2011). The structure has a yellow color emission Module and a main white light emitting module with a color temperature of 6,500 K. However, the color rendering index is only about 75 to 85.

Korean Patent Laid-Open Publication No. 2008-0087242 (published on Oct. 10, 2008) discloses a method of manufacturing a light emitting diode having a natural white LED having a color temperature of 6,000 to 8,000K and a warm white LED having a color temperature of 2,300 to 4,000K, There is proposed a stand lamp for a desk which can be adjusted to a user's desired color temperature by controlling the lighting number control of the main white and warm white LEDs and adjusting the input current value, does not exist.

Therefore, the first object of the present invention is to improve the color rendering property by increasing the red color ratio without reducing the color temperature or transferring the dominant wavelength of the white LED in a simple and efficient manner And a filter for improving the color rendering property of the LED.

A second object of the present invention is to provide an LED lamp having an improved color rendering property with a simple and efficient structure equipped with the filter.

A third object of the present invention is to provide a simple and efficient white LED which can improve the color rendering by increasing the red ratio without decreasing the color temperature or passing the dominant wavelength of the white LED by using the filter according to the first object, And to provide a method for improving the performance.

According to a preferred embodiment of the present invention, there is provided a liquid crystal display comprising a transparent flat matrix matrix, a red matrix formed on at least one surface of the inner and outer surfaces of the flat transparent matrix, Wherein the area ratio of the semi-transparent or opaque red region composed of the regular three-dimensional pattern to the transparent region having no regular three-dimensional pattern is in the range of 5 to 80: 20, and the above-mentioned three-dimensional pattern has a diameter or width of 0.1 to 5 mm and a height of 0.05 to 3 mm.

The three-dimensional pattern may be a dot shape, a grid shape, an intermittent bank shape, or a net shape.

The three-dimensional pattern may be a dot shape having a diameter of 0.5 to 3.5 mm and the distance between the dots may be 0.5 to 2.5 mm.

The above-mentioned three-dimensional pattern may have a grid shape, intermittent bank shape, or mesh shape with a line width of 0.5 to 1.5 mm and a spacing distance of 0.5 to 2.5 mm.

The transparent resin that forms the regular flat pattern with the flat transparent matrix may be a silicone resin, a polyacrylate resin, a polymethacrylate resin, a polystyrene resin, a polymethylpentene resin, at least one resin selected from the group consisting of a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, a polyether resin, May be a resin of the species.

The transparent resin forming the regular three-dimensional pattern may be selected from the group consisting of urethane acrylate, epoxy acrylate, polyester acrylate, and acryl acrylate. At least one kind of UV curable resin.

Further, the above-mentioned red phosphor may be Y ₂ O ₂ S: Eu, Gd; Li ₂ TiO _3: Mn; LiAlO _2: Mn; 6MgO and As ₂ O _5: Mn ^4+; And 3.5MgO 0.5MgF ₂ and GeO _2: Mn ^{4 +;} Ba _{1 .746} Ca _{2 .134} Si ₆ N _{10 .08} O _{0 .92} : Eu _{0 .04} ; Ce _{0 .08} Sr ₃ SiO ₅ : Eu; CaS: Eu; _{Sr x Ba y Ca 1 -x- y} AlSiN 3: Eu (0≤x + y≤1, 0≤x, y≤1);

_{Sr x Ba y Ca 2 -x- y} S: Eu (0≤x + y≤2) and, Y (Ba, Sr, Ca ) 1-x Eu xa Si b O c N d (0 <x <1, The phosphor may be at least one red phosphor selected from the group consisting of 1.8 <a <2.2, 4.5 <b <5.5, 0 <c <8, 0 <d ≦ 8 and 0 <c + d ≦ 8).

The above-described regular three-dimensional pattern may be composed of 60 to 99% by weight of the transparent resin and 1 to 40% by weight of the red phosphor.

According to an aspect of the present invention, there is provided an LED lamp comprising: an LED lamp having a LED color filter for enhancing color rendering spaced from the LED by 0.05 to 50 mm toward the light emitting direction; / RTI &gt;

According to another aspect of the present invention, there is provided an LED lamp comprising a plurality of annular reflectors and a COB (Chip on Board) There is provided an LED lamp in which a filter is placed at any one of a plurality of annular steps of the reflector and is located at a distance of 0.05 to 50 mm from the COB.

Here, the color rendering index of the LED lamp is 87 to 94, the dominant wavelength is 490 to 500 nm, and the correlated color temperature is 5500 to 6500K.

The red color ratio of the LED lamp is in the range of 30 to 40%.

According to a preferred embodiment of the present invention, there is provided a method for improving color rendering of an LED, comprising the steps of: providing the LED color rendering property improving filter; And a filter mounting step of placing the filter at a position spaced by 0.05 to 50 mm from the filter. The color rendering index is increased by 5 to 15% and the variation of the dorminant wavelength is increased A method of enhancing the color rendering property of a white LED is only 10 to 30 nm and the correlated color temperature reduction is within 5 to 18%.

Here, the red color ratio is further increased by 80 to 150% as compared with before the LED color rendering property improving filter is attached.

According to the present invention, the filter for improving the color rendering property of an LED, the LED lamp including the same, and the method for improving LED color rendering using the same can improve the color rendering property by increasing the red ratio without decreasing the color temperature or passing the dominant wavelength of the white LED. It is possible to realize a simple, efficient, and effective natural illumination light that is close to natural light.

1 is a plan view of a first embodiment of an LED lamp to which the LED color rendering property improving filter of the present invention is applied.
2 is a plan view of a second embodiment of an LED lamp to which the LED color rendering property improving filter of the present invention is applied.
3 to 5 are plane photographs of Comparative Examples 1 to 3, respectively.
6 is a plane photograph of Comparative Example 4 for a conventional conventional white LED lamp as a contrast.
Figures 7 to 12 are spectroradiometric and electric analysis diagrams for the illumination sources of Figures 1 to 6, respectively.

Hereinafter, the present invention will be described in detail.

As shown in FIGS. 1 and 2, the filter for enhancing LED color rendering according to the present invention includes a flat transparent matrix, a transparent transparent matrix including a red phosphor formed on at least one surface of the inner and outer surfaces of the flat transparent matrix, And a regular three-dimensional pattern made of resin.

In the present invention, the area ratio of the semi-transparent or opaque red region of the regular three-dimensional pattern to the transparent region having no regular three-dimensional pattern is 5 to 80:95 to 20.

When the area ratio of the transparent region is less than 20% of the total area of the LED color rendering property improving filter or the red region is more than 80%, the red color ratio is excessively large and the correlation color temperature reduction is more than 20% In addition, since the dominant wavelength recognized as a single color by the naked eye is shifted to the yellow band of 580 nm band, conversely, the area ratio of the above-mentioned transparent region exceeds 95% with respect to the entire area of the LED color- When the red region is less than 5%, the red ratio becomes excessively small and it is difficult to expect an improvement in color rendering property.

In the present invention, the three-dimensional pattern may be a dot shape, a grid shape, an intermittent bank shape, or a net shape, and the diameter or width of the three- 0.1 to 5 mm and the height is in the range of 0.05 to 3 mm.

When the diameter or the width of the above-mentioned three-dimensional pattern is less than 0.1 mm or the height is less than 0.05 mm, there is a risk of generation of interference fringes or inhomogeneity of illumination light due to color separation. Conversely, when the diameter or width exceeds 5 mm or height is 3 mm It is undesirable because the mixed color of the white light and the red light may become unnatural.

When the three-dimensional pattern is a dot shape, the diameter is 0.1 to 5 mm, preferably 0.5 to 3.5 mm, and the distance between the dots is 0.5 to 2.5 mm.

When the three-dimensional pattern is in the form of a grid, intermittent bank, or net, the line width is 0.1 to 5 mm, preferably 0.5 to 1.5 mm, The separation distance is about 0.5 to 2.5 mm.

In the present invention, the transparent resin that forms the regular flat pattern with the flat transparent matrix may be a silicone resin, a polyacrylate resin, a polymethacrylate resin, a polystyrene resin, Resin, a polymethyl pentene resin, a polyether sulfon resin, a polyether imide resin, a polyarylate resin, a polymethyl methacylate resin, Any of these mixed resins can be used.

As the transparent resin forming the regular three-dimensional pattern, a UV curable resin may be used. Examples of the UV curable resin include urethane acrylate, epoxy acrylate, polyester acrylate, Acryl acrylate, or any mixed resin thereof.

Examples of the red phosphor included in the transparent resin forming the regular three-dimensional pattern include Y ₂ O ₂ S: Eu, Gd; Li ₂ TiO _3: Mn; LiAlO _2: Mn; 6MgO and ^{_{As 2 O 5: Mn 4 +}} ; And 3.5MgO 0.5MgF ₂ and GeO _2: Mn ^{4 +;} Ba _{1 .746} Ca _{2 .134} Si ₆ N _{10 .08} O _{0 .92} : Eu _{0 .04} ; Ce _0.08 Sr ₃ SiO ₅ : Eu; CaS: Eu; _{Sr x Ba y Ca 1 -x- y} AlSiN 3: Eu (0≤x + y≤1, 0≤x, y≤1); Sr _x Ba _y Ca _{2 -x- y} S: Eu (0? _X + y? 2); Y (Ba, Sr, Ca) 1-x Eu xa Si b O c N d (0 <x <1, 1.8 <<a <2.2, 4.5 <b 5.5, 0≤c <8, 0 <d≤8 and 0 < c + d? 8), or any mixture thereof.

In the present invention, the mixing ratio of the transparent resin and the red phosphor constituting the regular three-dimensional pattern is 60 to 99% by weight of the transparent resin and 1 to 40% by weight of the red phosphor.

When the mixing amount of the red phosphor is less than 1% by weight, the red color ratio becomes excessively small and it may be difficult to expect an improvement in color rendering property. Conversely, when the mixing amount exceeds 40% by weight, There is a possibility that the mixing ratio will be lowered due to the mixing of the red color and the yellow color.

If necessary, in addition to the above-mentioned transparent resin and red phosphor, which constitute the above-described regular three-dimensional pattern, a green phosphor may be added in an amount of 10 wt% or less to reinforce the green wavelength band, Examples of such green phosphors include ZnS: Cu, Al; Ca ₂ MgSi ₂ O ₇ : Cl; Y ₃ (Ga _x Al _{1 -x} ) ₅ O ₁₂ : Ce (0 <x <1); La ₂ O ₃揃 11Al ₂ O ₃ : Mn; Ca ₈ Mg (SiO ₄ ) ₄ C ₁₂ : Eu, Mn; Sr ₂ SiO ₄ : Eu; Ba ₂ SiO ₄ : Eu; Ca ₂ SiO ₄ : Eu; SrGa ₂ S ₄ : Eu; BaGa ₂ S ₄ : Eu; CaGa ₂ S ₄ : Eu; Sr ₂ Ga ₂ S ₅ : Eu; SrAl ₂ S ₄ : Eu; BaAl ₂ S ₄ : Eu; Sr ₂ Al ₂ S ₅ : Eu; Ba ₂ MgSi ₂ O ₇ : Eu; Ba ₂ ZnSi ₂ O ₇ : Eu; BaAl ₂ O ₄ : Eu; SrAl ₂ O ₄ : Eu; _{BaMgAl 10 O 17: Eu, Mn} 2 +; _{BaMg 2 Al 16 O 27: Eu} , Mn 2 +; (Ca, Sr, Mg, Ln ) SiAlN 2 O: Ce 3 +; Eu _0.0029 Si _0.40427 Al _0.0121 O _0.02679 N _0.5539 , or any mixture thereof.

The LED color-rendering property improving filter according to the present invention is preferably applied to parallel light, but may not be parallel light. However, if the filter is positioned in contact with the light emitting surface of the LED, the illumination light will be yellow to red, It is preferably positioned at a distance of 0.05 to 50 mm, preferably 0.5 to 20 mm, more preferably 3.0 to 15 mm from the LED light emitting surface in the light emitting direction.

Accordingly, the LED lamp according to the present invention has a structure in which the LED color rendering property improving filter is located at a distance of 0.05 to 50 mm from the LED toward the light emitting direction.

Further, in another LED lamp according to the present invention, in the LED lamp comprising a plurality of annular step-like reflectors and a COB (Chip on Board), the LED color-rendering property enhancing filter may be formed of any one of a plurality of annular steps And may have a structure located at a distance of 0.05 to 50 mm from the above COB.

The color rendering index of the LED lamp according to the present invention is 87 to 94, the dominant wavelength is 490 to 500 nm, the correlated color temperature is in the range of 5500 to 6500K, the red color ratio red color ratio) is in the range of 30 to 40%.

Next, the method of improving the color rendering of white LED according to the present invention will be described.

The method for enhancing the color rendering of white LED according to the present invention comprises the steps of providing a filter for improving the color rendering property of LED and a filter mounting step for positioning the filter for improving the color rendering property of the LED from the LED of the LED lamp in a light emitting direction at a distance of 0.05 to 50 mm , The color rendering index is increased by 5 to 15%, the variation of the dominant wavelength is only 10 to 30 nm, the lowering of the correlated color temperature is within 5 to 18%, and the red color ratio is 80 to 80%, as compared with before the LED color- 150%.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples.

Example 1:

A flat disk having a thickness of 0.5 mm was formed by using a silicone resin (Dow Corning, 409 HS) as a transparent matrix.

Subsequently, 90 wt% of the silicone resin and 10 wt% of Ba _1.746 Ca _2.134 Si ₆ N _10.08 O _0.92 : Eu _0.04 as a red phosphor were homogeneously mixed. Then, on the upper surface of the above-mentioned flat disc, And a red dot area of 32%, and then a white LED lamp positioned above the reflector at a distance of 12.8 mm from the LED light emitting surface Respectively.

The manufactured LED lamp is shown in Fig.

Spectroradiometric & electric analysis of the illumination light source of the white LED lamp was performed and the results are shown in FIG.

Example 2:

A flat disk having a thickness of 0.5 mm was formed by using a polymethylpentene resin (Mitsui Chemical, Japan, heat resistance temperature: 200 캜, MTS 284) as a transparent matrix.

Subsequently, 92% by weight of a silicone resin (Dow Corning, 409 HS) and 8% by weight of YSr _1.8 Eu _1.78 Si ₅ O ₂ N ₅ as a red phosphor were homogeneously mixed. Then, on the upper surface of the above- , A LED having a regular dot pattern having a height of 0.9 mm and a center dot-to-center distance of 3.7 mm and a red dot area of 26% was fabricated. Then, a filter for enhancing LED color rendering was fabricated. A white LED lamp was fabricated.

The produced LED lamp is shown in Fig.

The spectral radiation and electrical analysis of the illumination light source of the white LED lamp described above were performed and the results are shown in FIG.

Comparative Example 1:

A flat disk having a thickness of 0.5 mm was formed by using a silicone resin (Dow Corning, 409 HS) as a transparent matrix.

Subsequently, 99.3% by weight of the silicone resin and 0.7% by weight of Ba _1.746 Ca _2.134 Si ₆ N _10.08 O _0.92 : Eu _{0.04 0.04} % as a red phosphor were homogeneously mixed. Then, a _linear width of 1 mm and a height of 0.4 mm And a regular grid pattern with a line spacing of 3 mm and a red dot area of 8.5% was fabricated. Then, a white LED lamp having a reflector spaced 3.5 mm from the LED light emitting surface was fabricated.

The produced LED lamp is shown in Fig.

Spectroradiometric & electric analysis of the illumination light source of the white LED lamp was performed and the results are shown in FIG.

Comparative Example 2:

A flat disk having a thickness of 0.5 mm was formed by using a polymethylpentene resin (Mitsui Chemical, Japan, heat resistance temperature: 200 캜, MTS 284) as a transparent matrix.

Subsequently, 72% by weight of a silicone resin (Dow Corning, 409 HS) and 28% by weight of YSr _1.8 Eu _1.78 Si ₅ O ₂ N ₅ as a red phosphor were homogeneously mixed, and then the entire upper surface of the above- A 100% LED color rendering property improving filter was fabricated, and then a white LED lamp having a reflector spaced 3.5 mm from the LED light emitting surface was fabricated.

The produced LED lamp is shown in Fig.

Spectroscopic radiation and electrical analysis of the illuminating light source of the white LED lamp were performed and the results are shown in FIG.

Comparative Example 3:

In Comparative Example 2, a white LED lamp was prepared in the same manner as in Comparative Example 2, except that the silicone resin content was 92 wt% and the red phosphor content was 8 wt%.

The produced LED lamp is shown in Fig.

The spectral radiation and electrical analysis of the illuminating light source of the white LED lamp were performed and the results are shown in FIG.

Comparative Example 4:

As a control, a white LED lamp (COB manufactured by Hepas Co., Ltd.) using a yellow fluorescent material without a filter for improving the color rendering property of white LED is shown in Fig. 6, and spectroscopic radiation and electrical analysis thereof were performed. 12.

The results of spectroscopic radiation and electrical analysis of Examples 1 and 2 and Comparative Examples 1 to 4, which are the main results of Figs. 7 to 12, are shown in Table 1 below.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4
(contrast) Correlated color temperature (K) 6122 6340 5498 4361 4666 7202 Color rendering index (CRI) 92.6 91.2 88.1 91.2 87.7 86.1 The luminous flux (lm) 621.07 668.37 761.64 545.82 697.73 1179.80 Red ratio (%) 38.0 34.3 30.9 48.1 36.0 17.7 Color variation (duv) -0.01081 -0.00807 -0.0052 -0.00968 -0.00594 -0.00116 Color Difference (SDCM) 16.6 16.9 9.6 16.9 10.6 22.5 water 0.0393 0.0266 0.0992 0.2135 0.1962 0.0253 Radiation velocity (W) 2.176 2.313 2.521 1.819 2.27 4.001 Peak wavelength (nm) 451 451 451 451 452 452 Dominant wavelength (nm) 495 495 583 585 582 481

From the results shown in Table 1, it can be seen that the color rendering index 86.1 of the white LED lamp for the filterless use exhibited an increase in the color rendering index of 7.5% and 5.9% in Examples 1 and 2 to which the LED color- Correlated color temperature was reduced by only 15% and 12%, respectively, and all dominant whites were maintained, and the dominant wavelength was also maintained at 495 nm, which is a blue wavelength band.

On the other hand, in the case of Comparative Example 1, the ratio of the red phosphors was lowered. As a result, the color rendering index increased only by 2.3%, while the correlated color temperature decreased by 24% to become a cool white color and the dominant wavelength shifted to the yellow color region of 583 nm In the case of Comparative Example 2, the color rendering index increased by 5.99%, but the correlated color temperature was reduced by about 40%, the dominant wavelength was changed to 585 nm, and in Comparative Example 3 in which the concentration of the red phosphor was lowered Similar results were obtained.

Comparative Example 4 is for the main white LED lamp for no filter, and shows a contrast.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention Which is also within the scope of the present invention.

Claims (16)

A flat transparent matrix;
And a regular three-dimensional pattern made of a transparent resin including a red phosphor formed on at least one surface of the inner and outer surfaces of the flat transparent matrix,
An area ratio of the semi-transparent or opaque red region of the regular three-dimensional pattern to the transparent region having no regular three-dimensional pattern is 5 to 80: 95 to 20;
Wherein the three-dimensional pattern has a diameter or width of 0.1 to 5 mm and a height of 0.05 to 3 mm. The LED color rendering property improving filter according to claim 1, wherein the three-dimensional pattern is a dot shape, a grid shape, an intermittent bank shape, and a net shape. The LED color rendering property improving filter according to claim 2, wherein the three-dimensional pattern is a dot shape having a diameter of 0.5 to 3.5 mm and the distance between the dots is 0.5 to 2.5 mm. 3. The liquid crystal display device according to claim 2, wherein the three-dimensional pattern is a grid, intermittent bank, or net shape with a line width of 0.5 to 1.5 mm and an LED having a spacing distance of 0.5 to 2.5 mm Filter for improving color rendering. The method according to claim 1, wherein the transparent resin forming the regular flat pattern and the transparent flat matrix resin are respectively a silicone resin, a polyacrylate resin, a polymethacrylate resin, a polystyrene resin A polyetherimide resin, a polyarylate resin, and a polymethyl methacylate resin, which are made of a resin selected from the group consisting of polymethyl methacrylate, polymethyl pentene resin, polyether sulfon resin, polyether imide resin, And at least one kind of resin selected from the group consisting of the following. The method according to claim 1, wherein the transparent resin forming the regular three-dimensional pattern is at least one selected from the group consisting of urethane acrylate, epoxy acrylate, polyester acrylate, and acryl acrylate And at least one UV-curable resin selected from the group consisting of the above-mentioned resins. The phosphor according to claim 1, wherein the red phosphor is Y ₂ O ₂ S: Eu, Gd; Li ₂ TiO _3: Mn; LiAlO _2: Mn; 6MgO and ^{_{As 2 O 5: Mn 4 +}} ; And 3.5MgO 0.5MgF ₂ and GeO _2: Mn ^{4 +;} CaS: Eu; Ce _{0 .08} Sr ₃ SiO ₅ : Eu; Ba _1.746 Ca _2.134 Si ₆ N _10.08 O _0.92 : Eu _0.04 ; Sr _x Ba _y Ca _1-xy AlSiN ₃ : Eu (0? X + y? 1, 0? _X , y? 1); _{Sr x Ba y Ca 2-xy} S: Eu (0≤x + y≤2) and, Y (Ba, Sr, Ca ) 1-x Eu xa Si b O c N d (0 <x <1, 1.8 < wherein at least one red phosphor selected from the group consisting of a <2.2, 4.5 <b <5.5, 0 <c <8, 0 <d ≦ 8 and 0 <c + d ≦ 8). The LED color rendering property improving filter according to claim 1, wherein the regular solid pattern comprises 60 to 99% by weight of the transparent resin and 1 to 40% by weight of the red phosphor. In an LED lamp,
An LED lamp in which the LED color rendering property improving filter according to any one of claims 1 to 8 is located at a distance of 0.05 to 50 mm from the light emitting surface of the LED. In an LED lamp comprising a reflector having a plurality of annular stepped portions and a chip on board (COB)
An LED lamp according to any one of claims 1 to 8, wherein the filter for enhancing LED color rendering is placed on any one of a plurality of annular stepped ends of the reflector and is located at a distance of 0.05 to 50 mm from the COB. The LED lamp according to claim 9, wherein the LED lamp has a color rendering index of 87 to 94, a dominant wavelength of 490 to 500 nm, and a correlated color temperature of 5500 to 6500K . The LED lamp according to claim 10, wherein the LED lamp has a color rendering index of 87 to 94, a dominant wavelength of 490 to 500 nm, and a correlated color temperature of 5500 to 6500K . 12. The LED lamp of claim 11, wherein the LED lamp has a red color ratio of 30 to 40%. 13. The LED lamp according to claim 12, wherein the LED lamp has a red color ratio of 30 to 40%. 9. A method of manufacturing a color filter, comprising the steps of: providing an LED color rendering property improving filter according to any one of claims 1 to 8;
And a filter mounting step of positioning the LED color-rendering property improving filter at a distance of 0.05 to 50 mm from the LED of the LED lamp in the light emission direction,
The color rendering index is increased by 5 to 15%, and the variation of the dominant wavelength is only 10 to 30 nm as compared with before the attachment of the LED color rendering property improving filter, and the correlated color temperature deterioration Is 5 to 18%. 16. The method according to claim 15, wherein the red color ratio is increased by 80 to 150% as compared with that before the LED color filter is mounted.

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