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WO2019066130A1 - Light emitting package - Google Patents

Light emitting package Download PDF

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Publication number
WO2019066130A1
WO2019066130A1 PCT/KR2017/012564 KR2017012564W WO2019066130A1 WO 2019066130 A1 WO2019066130 A1 WO 2019066130A1 KR 2017012564 W KR2017012564 W KR 2017012564W WO 2019066130 A1 WO2019066130 A1 WO 2019066130A1
Authority
WO
WIPO (PCT)
Prior art keywords
light emitting
lens portion
lens
seating
base substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/012564
Other languages
French (fr)
Korean (ko)
Inventor
이영식
김충섭
한유석
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optimech Co Ltd
Original Assignee
Optimech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Optimech Co Ltd filed Critical Optimech Co Ltd
Publication of WO2019066130A1 publication Critical patent/WO2019066130A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • H10H20/856—Reflecting means

Definitions

  • the present invention relates to a light emitting package, and more particularly, to a light emitting package including a light emitting portion, a reflection plate, and a lens portion, wherein the light generated by the light emitting portion is reflected, refracted, and externally irradiated.
  • Recent electronic devices such as smartphones, tablet computers, and laptop computers are evolving to perform more complex functions.
  • smart phones in addition to conventional browsing functions such as call, message transmission and browsing functions, smart phones have a high-quality image and image shooting function, an iris recognition function, and a heart rate measurement function.
  • recent electronic devices include various types of light emitting packages.
  • a recent smartphone may include a light emitting unit for flashing and an infrared ray emitting unit used for iris recognition so that clear images and images can be captured even in a dark environment.
  • a light emitting package of the type used for this purpose is disclosed in Korean Patent No. 10-1653926 (registered on August 29, 2016) and Korean Patent Publication No. 10-2016-0077840 (published on July 4, 2016) .
  • a problem to be solved by the present invention is to provide a light emitting package which is small in size, simple in structure, low in production cost, and excellent in durability.
  • Another problem to be solved by the present invention is to provide a light emitting package having a reflector having a spherical reflection surface and having a low production cost.
  • a light emitting package including a base substrate, a light emitting portion coupled to the base substrate, a through hole through which the light emitting portion surrounds the periphery of the light emitting portion, And a lens unit disposed on the reflection plate to cover the through hole and to refract light generated by the light emitting unit.
  • the light emitting package may further include a body coupled to the base substrate and having a seating groove on which the reflection plate is seated.
  • the reflection plate may further include a seat piece extending from an upper end of the reflection surface and closely coupled with the body part.
  • the body portion may have a seating groove formed on an upper surface thereof, and the seating piece may be seated inside the seating groove.
  • the thickness of the seating piece may be less than the depth of the seating groove.
  • the lens portion may be positioned on the body portion to cover the seating groove, and the light emitting package may further include a communication hole formed between the lens portion and the seat piece.
  • the reflective surface may be closely attached to the seating hole of the body portion.
  • the lower end opening of the through hole may be located adjacent to the base substrate.
  • the lens unit is formed of a single lens, and may include a Fresnel lens unit and a spherical convex lens unit.
  • the Fresnel lens portion may surround the convex lens portion.
  • the convex lens part may be positioned eccentrically in one direction at the center of the lens part.
  • the light emitting package according to the above feature may further include an intermediate region between the Fresnel lens portion and the block lens portion.
  • the intermediate region is planar and the absolute value of the refractive index may be smaller than the absolute value of the refractive power of the convex lens portion.
  • the light emitting package according to an embodiment of the present invention is advantageous in that it is small in size and simple in structure, and low in production cost and excellent in durability.
  • the light emitting package according to an embodiment of the present invention has an advantage that the reflector includes a reflecting surface formed with a spherical surface, and thus the production cost is low.
  • FIG. 1 is a perspective view of a light emitting package according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.
  • Fig. 4 is an enlarged view of the seating groove, the seating piece, and the communication hole portion in Fig.
  • FIG. 5 is a perspective view of a lens portion of a light emitting package according to an embodiment of the present invention.
  • 1 is a perspective view of a light emitting package according to an embodiment of the present invention.
  • 2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention.
  • 3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.
  • the light emitting package includes a base substrate 100, a light emitting unit 200, a body unit 300, a reflection plate 400, and a lens unit 500.
  • the base substrate 100 is formed in a flat plate shape to form the lower portion of the light emitting package.
  • the base substrate 100 may be disposed parallel to the xy plane in the three-axis coordinate system shown in the accompanying drawings.
  • the base substrate 100 may be formed of a printed circuit board (PCB).
  • a connection terminal electrically connected to the light emitting unit 200 may be formed on the upper surface of the base substrate 100.
  • a terminal for performing various functions such as a power source terminal (not shown) or a signal input terminal (not shown) for receiving power applied to the light emitting unit 200 may be formed on the lower surface of the base substrate 100.
  • the light emitting unit 200 is located on the upper surface of the base substrate 100.
  • the light emitting portion 200 may be located at the center of the upper surface of the base substrate 100.
  • the body 300 may be positioned on the upper surface of the base substrate 100.
  • the body 300 may be coupled to a bottom surface of an upper surface of the base substrate 100.
  • the light emitting unit 200 is an electric device that emits light when power is applied.
  • the light emitting unit 200 may be, for example, a light emitting diode (LED).
  • the light emitting unit 200 is externally applied and operates by being supplied with power transmitted through the base substrate 100.
  • the light emitting unit 200 emits light of a predetermined wavelength band.
  • the light emitting unit 200 may emit light in the visible light band or may emit light in the infrared light band.
  • the light emitting unit 200 emits light approximately in the direction orthogonal to the base substrate 100. That is, the light emitting unit 200 emits light around the z axis in the three-axis coordinate system shown in the accompanying drawings.
  • the body part 300 is formed on the upper portion of the base substrate 100 and surrounds the light emitting part 200. Specifically, the bottom surface of the body part 300 is positioned in contact with the base substrate 100.
  • the body 300 includes an opening 310 penetrating in the vertical direction (z-axis direction) and is coupled to the upper surface of the base substrate 100 such that the light emitting unit 200 is located inside the opening 310.
  • the opening 310 has a structure in which the opening surface becomes narrower toward the lower side, and when the upper and lower opening surfaces are compared, the lower opening surface may be narrower and the upper opening surface may be wider.
  • the lower surface of the body part 300 and the upper surface of the base substrate 100 are tightly coupled with each other so that the light emitted from the light emitting part 200 passes through the base substrate 100 and the body part 300 (Not shown).
  • a seating groove 320 is formed on the upper surface of the body part 300.
  • the seating groove 320 is a groove-like structure in which a seating piece 420 of a reflection plate 400 to be described later is seated. That is, the seating groove 320 has a top surface lower in height than the top surface of the four corner portions of the seating groove, for example, the top surface of the body 300, and has a top surface lower than the top surface of the seating groove peripheral portion. Thus, a gap of a predetermined size is formed between the upper surface of the seating groove peripheral portion and the upper surface of the seating groove 320.
  • the seating groove 320 is covered with the lens part 500 to form a communication hole 350 to be described later.
  • a plurality of seating grooves 320 may be formed on the upper surface of the body part 300. For example, as shown in the accompanying drawings, four portions may be formed, each located between two adjacent corner portions of the body portion 300. The seating groove 320 and the communication hole 350 will be described in more detail below.
  • the reflection plate 400 includes a reflecting surface 410 and a seat piece 420.
  • the reflecting surface 410 is formed to surround the light emitting portion 200 located inside.
  • the reflective surface 410 is tightly coupled to the inner surface of the opening of the body 300.
  • the reflection plate 400 has a through hole which is an empty space surrounded by the reflection surface 410.
  • the reflection surface 410 is not located above the lower surface of the reflection plate 400. [ Therefore, the upper (ie, upper opening) and lower (ie, lower opening) openings of the through holes are opened by the reflector 400 having a roughly funnel shape, and the diameter of the upper portions of the through holes may be larger than the lower diameter of the through holes have.
  • the reflective plate 400 When the reflective plate 400 is positioned on the base substrate 100 and the lower opening of the opened through hole is positioned adjacent to the base substrate 100, the light emitting unit 200 positioned on the base substrate 100 through the lower opening is disposed on the reflective plate 400 through the through holes.
  • the reflection plate 400 surrounds the light emitting unit 200 and reflects the light emitted from the light emitting unit 200 to the reflection surface 410.
  • the reflecting surface 410 is formed as a surface having a high reflectance with respect to the light emitted by the light emitting unit 200 so that the light emitted from the light emitting unit 200 is reflected and irradiated upward (+ z-axis direction).
  • the reflecting surface 410 is formed as a spherical surface, the reflecting surface 410 can be easily manufactured and the manufacturing cost can be reduced.
  • the seat piece 420 extends from the upper end of the reflecting surface 410. At this time, the seat piece 420 may be spaced apart from the peripheral portion of the reflecting surface 410 and may be bent and extended at the upper end of the reflecting surface 410, Direction orthogonal to the z-axis and perpendicular to the z-axis.
  • Each of the seat pieces 420 is seated in each of the seating grooves 320 of the body 300 so that the entire reflection plate 400 is seated on the body 300.
  • the seating piece 420 is formed at a position corresponding to the seating groove 320 and a plurality of (for example, four) seating pieces 420 may be formed corresponding to the number of the seating grooves 320. The manner in which the seat piece 420 is seated in the seating groove 320 will be described in more detail below.
  • the reflecting surface 410 and the seating piece 420 may be integrally formed of the same material.
  • the reflection plate 400 may be formed of a highly reflective coating-treated plastic resin, a highly reflective surface-treated metal, or the like.
  • the lens unit 500 is located on the upper side of the light emitting unit 200.
  • the lens unit 500 is coupled to cover the opening 310 of the body 300 from above. Therefore, the light emitted from the light emitting unit 200 passes through the lens unit 500 and is irradiated to the outside of the lens package.
  • the lens unit 500 is formed in a shape having a predetermined refractive power, so that the light of the light emitting unit 200 is refracted. The lens unit 500 will be described in more detail below.
  • the lens unit 500 is also coupled to the seating groove 320 of the body 300 in a covering manner. Specifically, the lens unit 500 is coupled to cover at least a part of the seating groove 320.
  • the lens unit 500 covers the seating groove 320 to form a communication hole 350 for communicating the inside and the outside of the opening 310 of the body 300.
  • the communication hole 350 is formed by the gap between the upper surface of the seating groove and the upper surface of the seating groove 320 so that the lens unit 500 is positioned on the body 300 and is in contact with the body 300, A communication hole 350 is formed between the lens part 500 and the seating piece 420 located in the seating groove 320. [ The communication hole 350 will be described in more detail below.
  • FIG. 4 is an enlarged view of the seating groove, the seating piece, and the communication hole portion in Fig.
  • FIG. 4 is an enlarged view of the area A in FIG.
  • FIG. 3 The seating groove 320, the seat piece 420, and the communication hole 350 will be described in more detail with reference to FIGS. 3 and 4.
  • FIG. 3 The seating groove 320, the seat piece 420, and the communication hole 350 will be described in more detail with reference to FIGS. 3 and 4.
  • FIG. 3 The seating groove 320, the seat piece 420, and the communication hole 350 will be described in more detail with reference to FIGS. 3 and 4.
  • the seating groove 320 is formed on the upper surface of the body part 300.
  • the seating groove 320 is formed to be recessed downward (-z axis direction) from the upper surface of the surrounding body part 300.
  • the seating groove 320 has a side extending in the vertical direction (-z axis direction) on the upper surface of the peripheral body part 300 and a side extending in the horizontal direction (direction orthogonal to the z axis) .
  • the lower surface of the seating groove 320 may be referred to as a seating surface 321.
  • the seat piece 420 is seated on the seating surface 321 of the seating groove 320. Specifically, the seat piece 420 covers a part of the seating surface 321. [ The seat piece 420 is formed to have a smaller area than the seating surface 321 and covers only a part of the seating surface 321 and is exposed without covering the rest of the seating surface 321. [ In addition, the seat piece 420 is formed with a thickness h2 that is smaller than the depth h1 of the seating groove 320. [ Therefore, even if the seating piece 420 is seated in the seating groove 320, an empty space is formed.
  • the upper part of the seating groove 320 is covered by the lens part 500.
  • a communication hole 350 is formed.
  • the communication hole 350 is an opening surrounded by a side surface and a bottom surface of the mounting groove 320 and a bottom surface of the lens portion 500.
  • the communication hole 350 allows the inside and the outside of the opening 310 of the body part 300 to communicate with each other.
  • the seating piece 420 is positioned inside the communication hole 350. However, the seat piece 420 does not completely seal the inside of the communication hole 350, and an empty space is formed. The inside and the outside of the opening 310 of the body part 300 are communicated with each other through the empty space.
  • the communication hole 350 may be used to discharge gas (gas generated during the curing process of an adhesive such as an epoxy) that may remain in the opening 310 of the body part 300 to the outside.
  • the communication hole 350 is used for discharging the moisture inside the opening portion 310 of the body portion 300 to the outside so that the inner surface of the lens portion 500 can be prevented from becoming opaque due to moisture.
  • FIG. 5 is a perspective view of a lens portion of a light emitting package according to an embodiment of the present invention. 3 and 5, the lens unit 500 of the light emitting package of the present invention will be described in detail.
  • the lens unit 500 is formed of a single lens. One lens is formed so as to cover the opening portion of the body portion 300 from above.
  • the lens portion 500 corresponds to a rim portion, is divided into a peripheral portion and a central portion that have substantially no refracting power, and a central portion that has a refracting power.
  • the lower surface of the peripheral portion of the lens unit 500 may be engaged with the upper surface of the body 300 and / or the reflection plate 400 to seal the opening of the body 300.
  • the refracting central portion of the lens portion 500 includes a Fresnel lens portion 510 and a convex lens portion 550.
  • the Fresnel lens portion 510 is formed to surround the convex lens portion 550 when the central portion is viewed as a whole.
  • the convex lens part 550 is positioned eccentrically in one direction from the center of the central Fresnel lens part 510.
  • the Fresnel lens part 510 is a lens formed by dividing a spherical or aspherical lens into a plurality of divisional lens parts to reduce the thickness of the lens. It is possible to make a lens having a large aperture without increasing the thickness of the lens through the Fresnel lens.
  • the Fresnel lens portion 510 includes a plurality of division lens portions that are separated by the dividing lines 521 to 525.
  • the Fresnel lens section 510 is divided into a plurality of division lens sections by dividing lines 521 to 525 parallel to the y-axis.
  • the division lens unit is formed in a shape arranged along the x-axis in the three-axis coordinate system shown in the accompanying drawings.
  • the Fresnel lens portion 510 includes six division lens portions divided into five dividing lines 521 to 525.
  • the plurality of segment lens portions are formed so that all or most of them are facing the same direction. More specifically, 70% or more of the plurality of divisional lens units can be formed so as to face the same direction. And may be formed so as to face the same direction. Referring to the accompanying drawings, the six segment lens portions of the Fresnel lens portion 510 are all formed to face in the same direction.
  • All or most of the plurality of divisional lens portions can be formed such that the exit surfaces 511 to 516 face the same direction.
  • the exit surfaces 511 to 516 of the plurality of division lens units can be formed to be inclined in one direction of the x-axis in the three-axis coordinate system shown in the accompanying drawings.
  • the Fresnel lens portion 510 is formed such that the exit surfaces 511 to 516 of six divisional lens portions are inclined in the positive direction of the x-axis.
  • the exit surfaces 511 to 516 of the Fresnel lens portion 510 are formed to be inclined in one direction as described above, but the incident surface of the Fresnel lens portion 510 may be formed substantially flat.
  • the incident surface of the lower surface corresponding to the exit surfaces 511 to 516 of the Fresnel lens portion 510 is not the entrance surface of the Fresnel lens portion 510 but the entrance surface of the convex lens portion 550 And may be formed as an incident surface 552. Therefore, the convex lens portion 550 can be formed with an area smaller than the incident surface 552 of the lower surface of the exit surface 551 of the upper surface.
  • the convex lens portion 550 includes an exit surface 551 on the upper surface and an incident surface 552 on the lower surface. Both the exit surface 551 and the incident surface 552 of the convex lens portion 550 may be formed in a convex shape.
  • the convex lens portion 550 has a positive refractive power. It is preferable that both the exit surface 551 and the incident surface 552 of the convex lens portion 550 are formed in a spherical shape.
  • the convex lens portion 550 is surrounded by the Fresnel lens portion 510.
  • the convex lens part 550 is formed eccentrically in one direction from the center of the lens part 500 when the position corresponding to the positive direction of the z axis of the light emitting part 200 is the center of the lens part 500.
  • the convex lens unit 550 may be eccentrically positioned in the negative x-axis direction in the three-axis coordinate system shown in the accompanying drawings.
  • the convex lens portion 550 may have a shape in which the exit surface 551 and the incident surface 552 are different from each other. As described above, the exit surface 551 of the convex lens portion 550 can be formed to have an area smaller than that of the incident surface 552. Further, the exit surface 551 of the convex lens portion 550 may be eccentrically positioned in one direction with respect to the incident surface 552. Specifically, the exit surface 551 of the convex lens portion 550 may be eccentrically positioned in the negative direction of the x-axis in the three-axis coordinate system shown in the attached drawings than the incident surface 552. [
  • An intermediate region 530 is formed between the Fresnel lens portion 510 and the convex lens portion 550.
  • the intermediate region 530 is formed to be substantially planar, and is formed with little or no refracting power. At least the intermediate region 530 is formed such that the refractive power is smaller than the absolute value of the refractive power of the convex lens portion 550.
  • An intermediate region 530 formed substantially in a plane between the exit surfaces 511 to 516 of the Fresnel lens portion 510 and the exit surface 551 of the convex lens portion 550 is formed on the exit surface of the lens portion 500
  • the emitting surface 531 is relatively clearly distinguished.
  • the incident surface portion of the Fresnel lens portion 510 may be formed substantially flat so that the incident surface of the intermediate region 530 may not exist or may not be clearly distinguished.
  • the lens unit 500 refracts the light generated by the light emitting unit 200 in one direction with respect to the optical axis.
  • the beam of light generated by the light emitting unit 200 has a central axis parallel to the z-axis before entering the lens unit 500.
  • the light axis has a central axis inclined in the z-axis direction.
  • the light beam generated by the light emitting unit 200 passes through the lens unit 500 and is emitted in a direction inclined in the positive direction of the x axis As shown in FIG.
  • the shape of the lens unit 500 described above allows the center axis of the beam to be inclined at an appropriate angle while maintaining the light generated by the light emitting unit 200 to be collected at a considerable level. It is also possible to keep its thickness relatively thin compared to other optical lenses that achieve the same tilt. Keeping the thickness of the lens unit 500 thin can mean reducing the overall height of the light emitting package, which can contribute to downsizing and thinning of the electronic device on which the light emitting package is mounted.
  • the present invention is not limited by the specific form of the lens unit 500 shown in the accompanying drawings.
  • a person skilled in the art will appreciate that the positional relationship between the Fresnel lens portion 510 and the convex lens portion 550, the angle between the exit surface 511 to 516 of the Fresnel lens portion 510 and the incident surface, The degree of refraction of light of the light emitting unit 200 and the like can be easily adjusted by adjusting the refracting power of the convex lens unit 550 or the like.
  • base substrate 200 light emitting portion
  • lens unit 510 Fresnel lens unit
  • intermediate area 550 convex lens

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention concerne un boîtier électroluminescent comprenant : un substrat de base ; une unité électroluminescente couplée au substrat de base ; une plaque réfléchissante qui entoure la périphérie de l'unité électroluminescente et comprenant un trou traversant et une surface de réflexion ayant une forme sphérique, l'unité électroluminescente étant positionnée à l'intérieur du trou traversant ; et une unité de lentille qui est positionnée au-dessus de la plaque réfléchissante pour recouvrir le trou traversant et réfracter la lumière générée à partir de l'unité électroluminescente.The present invention relates to an electroluminescent package comprising: a base substrate; an electroluminescent unit coupled to the base substrate; a reflective plate which surrounds the periphery of the electroluminescent unit and comprises a through hole and a reflective surface having a spherical shape, the electroluminescent unit being positioned within the through hole; and a lens unit which is positioned above the reflective plate to cover the through hole and to refract the light generated from the light emitting unit.

Description

발광 패키지Light emitting package

본 발명은 발광 패키지에 관한 것으로, 보다 상세하게는 발광부, 반사판 및 렌즈부를 포함하여 발광부가 생성하는 빛이 반사되고 굴절되어 외부로 조사되는 발광 패키지에 관한 것이다.The present invention relates to a light emitting package, and more particularly, to a light emitting package including a light emitting portion, a reflection plate, and a lens portion, wherein the light generated by the light emitting portion is reflected, refracted, and externally irradiated.

최근의 스마트폰(smartphone), 태블릿 컴퓨터(tablet computer), 랩톱 컴퓨터(laptop computer) 등의 전자 장치는 보다 복합적인 기능을 수행하도록 발전하고 있다. 예를 들어, 스마트폰은 종래의 통화, 메시지 송수신 및 인터넷 브라우징 기능(browsing function) 이외에도 고화질의 이미지 및 영상의 촬영 기능, 홍채 인식 기능 및 심박 측정 기능 등을 탑재하고 있다. 이러한 추가적인 기능을 구현하기 위해서 최근의 전자 장치는 다양한 형태의 발광 패키지를 포함하고 있다.Recent electronic devices such as smartphones, tablet computers, and laptop computers are evolving to perform more complex functions. For example, in addition to conventional browsing functions such as call, message transmission and browsing functions, smart phones have a high-quality image and image shooting function, an iris recognition function, and a heart rate measurement function. In order to implement these additional functions, recent electronic devices include various types of light emitting packages.

예를 들어, 최근의 스마트폰은 어두운 환경에서도 선명한 이미지 및 영상의 촬영이 가능하도록 플래시용 발광부를 포함하기도 하고, 홍채 인식용으로 사용되는 적외선 발광부를 포함하기도 한다.For example, a recent smartphone may include a light emitting unit for flashing and an infrared ray emitting unit used for iris recognition so that clear images and images can be captured even in a dark environment.

이러한 용도로 사용되는 형태의 발광 패키지에 대해서는 대한민국 등록특허 제10-1653926호(2016년 8월 29일 등록) 및 대한민국 공개특허 제10-2016-0077840호(2016년 7월 4일 공개)에 개시되어 있다.A light emitting package of the type used for this purpose is disclosed in Korean Patent No. 10-1653926 (registered on August 29, 2016) and Korean Patent Publication No. 10-2016-0077840 (published on July 4, 2016) .

이와 같이 최근의 전자 장치는 추가적인 부품이 탑재되지만 전체적으로 보다 경박단소화되는 추세이다. 이를 위해서 내부에 탑재되는 각종 부품들도 소형화될 것이 요구되고 있다. 이는 상술한 발광 패키지에 대해서도 예외는 아니다. 그러나 발광 패키지를 소형화하게 되면 구조가 복잡해져서 생산 단가가 상승하기도 하고, 내구성이 저하되는 문제가 발생하기도 한다.As such, recent electronic devices are equipped with additional components, but they tend to be thinner and thinner as a whole. For this purpose, it is required that the various components mounted inside are also downsized. This is no exception to the above-described light emitting package. However, if the light emitting package is miniaturized, the structure becomes complicated and the production cost increases and the durability of the light emitting package deteriorates.

본 발명이 해결하려는 과제는, 소형이면서 구조가 간단하여 생산 단가가 낮으면서 내구성이 우수한 발광 패키지를 제공하는 것이다. A problem to be solved by the present invention is to provide a light emitting package which is small in size, simple in structure, low in production cost, and excellent in durability.

본 발명이 해결하려는 다른 과제는, 반사판이 구면으로 형성된 반사면을 포함하여 생산 단가가 낮은 발광 패키지를 제공하는 것이다.Another problem to be solved by the present invention is to provide a light emitting package having a reflector having a spherical reflection surface and having a low production cost.

상기 과제를 해결하기 위한 본 발명의 한 특징에 따른 발광 패키지는 베이스 기판, 상기 베이스 기판에 결합된 발광부, 상기 발광부의 주변을 둘러싸면서 상기 발광부가 내부에 위치하는 관통홀을 형성하고, 구면으로 형성된 반사면을 포함하는 반사판, 그리고 상기 반사판의 상부에 위치하여 상기 관통홀을 덮고, 상기 발광부가 생성하는 빛을 굴절시키는 렌즈부를 포함한다.According to an aspect of the present invention, there is provided a light emitting package including a base substrate, a light emitting portion coupled to the base substrate, a through hole through which the light emitting portion surrounds the periphery of the light emitting portion, And a lens unit disposed on the reflection plate to cover the through hole and to refract light generated by the light emitting unit.

상기 특징에 따른 발광 패키지는 상기 베이스 기판에 결합되고, 상기 반사판이 안착되는 안착홈이 형성된 바디부를 더 포함할 수 있다.The light emitting package may further include a body coupled to the base substrate and having a seating groove on which the reflection plate is seated.

상기 반사판은 상기 반사면의 상단에서 연장되고, 상기 바디부와 밀착되어 결합되는 안착편을 더 포함할 수 있다.The reflection plate may further include a seat piece extending from an upper end of the reflection surface and closely coupled with the body part.

상기 바디부는 상면에 안착홈이 형성되고, 상기 안착편은 상기 안착홈의 내부에 안착될 수 있다.The body portion may have a seating groove formed on an upper surface thereof, and the seating piece may be seated inside the seating groove.

상기 안착편의 두께는 상기 안착홈의 깊이보다 작을 수 있다.The thickness of the seating piece may be less than the depth of the seating groove.

상기 렌즈부는 상기 안착홈을 덮도록 상기 바디부 위에 위치하고, 상기 발광 패키지는 상기 렌즈부와 상기 안착편 사이에 형성된 연통홀을 더 포함할 수 있다.The lens portion may be positioned on the body portion to cover the seating groove, and the light emitting package may further include a communication hole formed between the lens portion and the seat piece.

상기 반사면은 상기 바디부의 안착홀에 밀착되어 결합될 수 있다. The reflective surface may be closely attached to the seating hole of the body portion.

상기 관통홀의 하단 개구는 상기 베이스 기판에 인접하게 위치할 수 있다.The lower end opening of the through hole may be located adjacent to the base substrate.

상기 렌즈부는 한 매의 렌즈로 형성되고, 프레넬 렌즈(Fresnel lens)부 및 구면의 볼록 렌즈부를 포함할 수 있다.The lens unit is formed of a single lens, and may include a Fresnel lens unit and a spherical convex lens unit.

상기 프레넬 렌즈부는 상기 볼록 렌즈부를 둘러싸는 형태일 수 있다.The Fresnel lens portion may surround the convex lens portion.

상기 볼록 렌즈부는 상기 렌즈부의 중심에서 일 방향으로 편심되어 위치할 수 있다.The convex lens part may be positioned eccentrically in one direction at the center of the lens part.

상기 특징에 따른 발광 패키지는 상기 프레넬 렌즈부 및 상기 블록 렌즈부 사이에는 중간 영역을 더 포함할 수 있다.The light emitting package according to the above feature may further include an intermediate region between the Fresnel lens portion and the block lens portion.

상기 중간 영역은 평면이고, 굴절률의 절대값이 상기 볼록 렌즈부의 굴절력의 절대값보다 작을 수 있다.The intermediate region is planar and the absolute value of the refractive index may be smaller than the absolute value of the refractive power of the convex lens portion.

본 발명의 일 실시예에 따른 발광 패키지는 소형이면서 구조가 간단하여 생산 단가가 낮으면서 내구성이 우수하다는 장점이 있다.The light emitting package according to an embodiment of the present invention is advantageous in that it is small in size and simple in structure, and low in production cost and excellent in durability.

또한, 본 발명의 일 실시예에 따른 발광 패키지는 반사판이 구면으로 형성된 반사면을 포함하여 생산 단가가 낮다는 장점이 있다.In addition, the light emitting package according to an embodiment of the present invention has an advantage that the reflector includes a reflecting surface formed with a spherical surface, and thus the production cost is low.

도 1은 본 발명의 일 실시예에 따른 발광 패키지의 사시도이다.1 is a perspective view of a light emitting package according to an embodiment of the present invention.

도 2는 본 발명의 일 실시예에 따른 발광 패키지의 분해사시도이다.2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention.

도 3은 본 발명의 일 실시예에 따른 발광 패키지의 단면도이다.3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.

도 4는 도 3에서 안착홈, 안착편 및 연통홀 부분을 확대하여 도시한 것이다.Fig. 4 is an enlarged view of the seating groove, the seating piece, and the communication hole portion in Fig.

도 5는 본 발명의 일 실시예에 따른 발광 패키지의 렌즈부의 사시도이다.5 is a perspective view of a lens portion of a light emitting package according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명의 실시예들을 상세히 설명한다. 본 발명을 설명하는데 있어서, 해당 분야에 이미 공지된 기술 또는 구성에 대한 구체적인 설명을 부가하는 것이 본 발명의 요지를 불분명하게 할 수 있다고 판단되는 경우에는 상세한 설명에서 이를 일부 생략하도록 한다. 또한, 본 명세서에서 사용되는 용어들은 본 발명의 실시예들을 적절히 표현하기 위해 사용된 용어들로서, 이는 해당 분야의 관련된 사람 또는 관례 등에 따라 달라질 수 있다. 따라서, 본 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is judged that it is possible to make the gist of the present invention obscure by adding a detailed description of a technique or configuration already known in the field, it is omitted from the detailed description. In addition, terms used in the present specification are terms used to appropriately express the embodiments of the present invention, which may vary depending on the person or custom in the relevant field. Therefore, the definitions of these terms should be based on the contents throughout this specification.

여기서 사용되는 전문용어는 단지 특정 실시예를 언급하기 위한 것이며, 본 발명을 한정하는 것을 의도하지 않는다. 여기서 사용되는 단수 형태들은 문구들이 이와 명백히 반대의 의미를 나타내지 않는 한 복수 형태들도 포함한다. 명세서에서 사용되는 ‘포함하는’의 의미는 특정 특성, 영역, 정수, 단계, 동작, 요소 및/또는 성분을 구체화하며, 다른 특정 특성, 영역, 정수, 단계, 동작, 요소, 성분 및/또는 군의 존재나 부가를 제외시키는 것은 아니다.The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. As used herein, the meaning of "comprising" embodies certain features, areas, integers, steps, operations, elements and / or components, And the like.

이하, 첨부된 도 1 내지 도 5를 참조하여 본 발명의 일 실시예에 따른 발광 패키지에 대해서 설명하도록 한다.Hereinafter, a light emitting package according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5 attached hereto.

도 1은 본 발명의 일 실시예에 따른 발광 패키지의 사시도이다. 도 2는 본 발명의 일 실시예에 따른 발광 패키지의 분해사시도이다. 도 3은 본 발명의 일 실시예에 따른 발광 패키지의 단면도이다. 1 is a perspective view of a light emitting package according to an embodiment of the present invention. 2 is an exploded perspective view of a light emitting package according to an embodiment of the present invention. 3 is a cross-sectional view of a light emitting package according to an embodiment of the present invention.

먼저, 도 1 내지 도 3을 참조하면, 발광 패키지는 베이스 기판(100), 발광부(200), 바디부(300), 반사판(400) 및 렌즈부(500)를 포함한다.1 to 3, the light emitting package includes a base substrate 100, a light emitting unit 200, a body unit 300, a reflection plate 400, and a lens unit 500.

베이스 기판(100)은 평판 형태로 형성되어, 발광 패키지의 하부를 이룬다. 베이스 기판(100)은 첨부한 도면에 표시된 3축 좌표계에서 xy평면에 평행하게 배치될 수 있다. The base substrate 100 is formed in a flat plate shape to form the lower portion of the light emitting package. The base substrate 100 may be disposed parallel to the xy plane in the three-axis coordinate system shown in the accompanying drawings.

베이스 기판(100)은 인쇄회로기판(PCB, Printed Circuit Board)으로 형성될 수 있다. 이러한 베이스 기판(100)의 상면에는 발광부(200)와 전기적으로 연결되는 연결 단자가 형성될 수 있다. 베이스 기판(100)의 하면에는 발광부(200)에 인가되는 전력이 입력되는 전원단자(미도시) 또는 신호입력 단자(미도시) 등과 같은 다양한 기능을 수행하는 단자가 형성될 수 있다.The base substrate 100 may be formed of a printed circuit board (PCB). A connection terminal electrically connected to the light emitting unit 200 may be formed on the upper surface of the base substrate 100. A terminal for performing various functions such as a power source terminal (not shown) or a signal input terminal (not shown) for receiving power applied to the light emitting unit 200 may be formed on the lower surface of the base substrate 100.

베이스 기판(100)의 상면에는 발광부(200)가 위치한다. 발광부(200)는 베이스 기판(100)의 상면 중앙 부분에 위치할 수 있다. 또한, 베이스 기판(100)의 상면에는 바디부(300)가 위치할 수 있다. 바디부(300)는 베이스 기판(100)의 상면 테두리 부분에 하면이 결합되어 지지될 수 있다.The light emitting unit 200 is located on the upper surface of the base substrate 100. The light emitting portion 200 may be located at the center of the upper surface of the base substrate 100. In addition, the body 300 may be positioned on the upper surface of the base substrate 100. The body 300 may be coupled to a bottom surface of an upper surface of the base substrate 100.

발광부(200)는 전원이 인가되면 빛을 방출하는 전기 소자이다. 발광부(200)는 예를 들어, 발광다이오드(LED, Light Emitting Diode)일 수 있다. 발광부(200)는 외부에서 인가되고, 베이스 기판(100)을 통해 전달된 전원을 인가받아 작동한다. 발광부(200)는 미리 정해진 파장 대역의 빛을 방출한다. 예를 들어, 발광부(200)는 가시광선 대역의 빛을 방출할 수도 있거나, 적외선 대역의 빛을 방출할 수도 있다.The light emitting unit 200 is an electric device that emits light when power is applied. The light emitting unit 200 may be, for example, a light emitting diode (LED). The light emitting unit 200 is externally applied and operates by being supplied with power transmitted through the base substrate 100. The light emitting unit 200 emits light of a predetermined wavelength band. For example, the light emitting unit 200 may emit light in the visible light band or may emit light in the infrared light band.

발광부(200)는 대략적으로 베이스 기판(100)에 직교하는 방향을 중심으로 빛을 방출한다. 즉, 발광부(200)는 첨부된 도면에 표시된 3축 좌표계에서 z축을 중심으로 빛을 방출한다.The light emitting unit 200 emits light approximately in the direction orthogonal to the base substrate 100. That is, the light emitting unit 200 emits light around the z axis in the three-axis coordinate system shown in the accompanying drawings.

바디부(300)는 베이스 기판(100)의 상부에 위치하고, 발광부(200)의 주변을 둘러싸는 형태로 형성된다. 구체적으로, 바디부(300)는 하면이 베이스 기판(100)에 접하게 위치한다.The body part 300 is formed on the upper portion of the base substrate 100 and surrounds the light emitting part 200. Specifically, the bottom surface of the body part 300 is positioned in contact with the base substrate 100.

바디부(300)는 상하 방향(z축 방향)으로 관통된 개구부(310)를 포함하여, 발광부(200)가 개구부(310) 내부에 위치하도록 베이스 기판(100)의 상면에 결합된다. 개구부(310)는 하측으로 갈수록 개구면이 좁아지는 구조를 가져, 상측 및 하측 개구면을 비교할 때, 하측 개구면이 좁고 상측 개구면이 넓은 형태로 형성될 수 있다. 바디부(300)는 차광성으로 형성되고, 바디부(300)의 하면과 베이스 기판(100)의 상면은 밀착되게 결합되어 발광부(200)의 빛이 베이스 기판(100) 및 바디부(300) 부분을 통해 외부로 유출되지 않도록 형성된다.The body 300 includes an opening 310 penetrating in the vertical direction (z-axis direction) and is coupled to the upper surface of the base substrate 100 such that the light emitting unit 200 is located inside the opening 310. The opening 310 has a structure in which the opening surface becomes narrower toward the lower side, and when the upper and lower opening surfaces are compared, the lower opening surface may be narrower and the upper opening surface may be wider. The lower surface of the body part 300 and the upper surface of the base substrate 100 are tightly coupled with each other so that the light emitted from the light emitting part 200 passes through the base substrate 100 and the body part 300 (Not shown).

바디부(300)의 상면에는 안착홈(320)이 형성된다. On the upper surface of the body part 300, a seating groove 320 is formed.

안착홈(320)은 후술할 반사판(400)의 안착편(420)이 안착되는 홈 형태의 구조이다. 즉, 안착홈(320)은 안착홈 주변부, 예를 들어 바디부(300) 상면의 네 모서리 부분의 상면보다 낮은 높이의 상면을 갖는 부분으로서, 안착홈 주변부의 상면보다 낮은 상면을 갖고 있다. 이로 인해, 안착홈 주변부 상면과 안착홈(320) 상면 사이에는 정해진 크기만큼의 간극이 형성된다. The seating groove 320 is a groove-like structure in which a seating piece 420 of a reflection plate 400 to be described later is seated. That is, the seating groove 320 has a top surface lower in height than the top surface of the four corner portions of the seating groove, for example, the top surface of the body 300, and has a top surface lower than the top surface of the seating groove peripheral portion. Thus, a gap of a predetermined size is formed between the upper surface of the seating groove peripheral portion and the upper surface of the seating groove 320.

또한, 안착홈(320)은 렌즈부(500)에 덮여 후술할 연통홀(350)을 형성한다. 안착홈(320)은 바디부(300)의 상면에 복수 개가 형성될 수 있다. 예를 들어, 첨부한 도면에 도시된 것과 같이, 바디부(300)의 인접한 두 모서리 부분 사이에 각각 위치하여 모두 4개가 형성될 수 있다. 안착홈(320)과 연통홀(350)에 대해서는 아래에서 더욱 상세하게 설명하도록 한다. In addition, the seating groove 320 is covered with the lens part 500 to form a communication hole 350 to be described later. A plurality of seating grooves 320 may be formed on the upper surface of the body part 300. For example, as shown in the accompanying drawings, four portions may be formed, each located between two adjacent corner portions of the body portion 300. The seating groove 320 and the communication hole 350 will be described in more detail below.

반사판(400)은 반사면(410) 및 안착편(420)을 포함한다. 반사면(410)은 내부에 위치한 발광부(200)를 둘러싸게 형성된다. 반사면(410)은 바디부(300)의 개구부 내부면에 밀착되게 결합된다. The reflection plate 400 includes a reflecting surface 410 and a seat piece 420. The reflecting surface 410 is formed to surround the light emitting portion 200 located inside. The reflective surface 410 is tightly coupled to the inner surface of the opening of the body 300.

또한, 반사판(400)은 반사면(410)에 의해 에워싸여져 있는 빈 공간인 관통홀을 구비하고 있고, 이때, 반사면(410)은 반사판(400)의 하면부 상부에는 위치하지 않는다. 따라서, 대략 깔때기 형태로 이루어져 있는 반사판(400)에 의해 관통홀의 상부(즉, 상부 개구)와 하부(즉, 하부 개구)는 모두 개방되어 있고, 관통홀 상부의 지름은 관통홀의 하부 지름보다 넓을 수 있다. The reflection plate 400 has a through hole which is an empty space surrounded by the reflection surface 410. The reflection surface 410 is not located above the lower surface of the reflection plate 400. [ Therefore, the upper (ie, upper opening) and lower (ie, lower opening) openings of the through holes are opened by the reflector 400 having a roughly funnel shape, and the diameter of the upper portions of the through holes may be larger than the lower diameter of the through holes have.

이러한 반사판(400)이 베이스 기판(100) 위에 위치하여 개방된 관통홀의 하부 개구가 베이스 기판(100)에 인접하게 위치하면 하부 개부를 통해 베이스 기판(100)에 위치한 발광부(200)가 반사판(400)의 관통홀 속으로 노출된다.When the reflective plate 400 is positioned on the base substrate 100 and the lower opening of the opened through hole is positioned adjacent to the base substrate 100, the light emitting unit 200 positioned on the base substrate 100 through the lower opening is disposed on the reflective plate 400 through the through holes.

이로 인해, 반사판(400)은 발광부(200) 주변을 둘러싸게 되어 발광부(200)에서 방출되는 빛을 반사면(410)으로 반사시키게 된다. Accordingly, the reflection plate 400 surrounds the light emitting unit 200 and reflects the light emitted from the light emitting unit 200 to the reflection surface 410.

반사면(410)은 발광부(200)가 방출하는 빛에 대해서 반사율이 높은 표면으로 형성되어, 발광부(200)가 방출한 빛을 반사시켜 상방(+z축 방향)으로 조사되도록 한다.The reflecting surface 410 is formed as a surface having a high reflectance with respect to the light emitted by the light emitting unit 200 so that the light emitted from the light emitting unit 200 is reflected and irradiated upward (+ z-axis direction).

이러한 반사면(410)는 구면으로 형성되어 있어, 반사면(410)의 제작이 용이하며 제조 비용이 절감된다. Since the reflecting surface 410 is formed as a spherical surface, the reflecting surface 410 can be easily manufactured and the manufacturing cost can be reduced.

안착편(420)은 반사면(410)의 상단에서 연장된다. 이때, 안착편(420)은 반사면(410)의 주변부에 일정한 간격으로 이격되게 위치할 수 있고, 반사면(410)의 상단에서 절곡되어 연장될 수 있으므로, 반사면(410)의 상단에서 Z 방향과 직교하는 방향으로 연장되어 z축에 직교하는 형태로 형성될 수 있다.The seat piece 420 extends from the upper end of the reflecting surface 410. At this time, the seat piece 420 may be spaced apart from the peripheral portion of the reflecting surface 410 and may be bent and extended at the upper end of the reflecting surface 410, Direction orthogonal to the z-axis and perpendicular to the z-axis.

이러한 각 안착편(420)은 상술한 바디부(300)의 각 안착홈(320)에 안착되어, 반사판(400) 전체가 바디부(300)에 안착되게 한다. 안착편(420)은 안착홈(320)에 대응되는 위치에 형성되고, 안착홈(320)의 개수에 대응하여 복수 개(예를 들어, 4개)가 형성될 수 있다. 안착편(420)이 안착홈(320)에 안착되는 형태에 대해서는 아래에서 더욱 상세하게 설명하도록 한다.Each of the seat pieces 420 is seated in each of the seating grooves 320 of the body 300 so that the entire reflection plate 400 is seated on the body 300. The seating piece 420 is formed at a position corresponding to the seating groove 320 and a plurality of (for example, four) seating pieces 420 may be formed corresponding to the number of the seating grooves 320. The manner in which the seat piece 420 is seated in the seating groove 320 will be described in more detail below.

반사판(400)에서 반사면(410)과 안착편(420)은 동일한 재질로 일체로 형성될 수 있다. 구체적으로, 반사판(400)은 고반사 코팅 처리된 플라스틱 수지 또는 고반사 표면 처리된 금속 등으로 형성될 수 있다.In the reflection plate 400, the reflecting surface 410 and the seating piece 420 may be integrally formed of the same material. Specifically, the reflection plate 400 may be formed of a highly reflective coating-treated plastic resin, a highly reflective surface-treated metal, or the like.

렌즈부(500)는 발광부(200)의 상부에 위치한다. 렌즈부(500)는 바디부(300)의 개구부(310)를 상부에서 덮는 형태로 결합된다. 따라서 발광부(200)가 방출한 빛은 렌즈부(500)를 통과하여 렌즈 패키지의 외부로 조사되게 된다. 렌즈부(500)는 정해진 크기의 굴절력을 가지는 형태로 형성되어, 발광부(200)의 빛이 굴절되게 된다. 렌즈부(500)에 대해서는 아래에서 더욱 상세하게 설명하도록 한다.The lens unit 500 is located on the upper side of the light emitting unit 200. The lens unit 500 is coupled to cover the opening 310 of the body 300 from above. Therefore, the light emitted from the light emitting unit 200 passes through the lens unit 500 and is irradiated to the outside of the lens package. The lens unit 500 is formed in a shape having a predetermined refractive power, so that the light of the light emitting unit 200 is refracted. The lens unit 500 will be described in more detail below.

렌즈부(500)는 바디부(300)의 안착홈(320)도 덮는 형태로 결합된다. 구체적으로, 렌즈부(500)는 안착홈(320)의 적어도 일부를 덮는 형태로 결합된다. 렌즈부(500)는 안착홈(320)을 덮어 바디부(300)의 개구부(310) 내부와 외부를 연통시키는 연통홀(350)을 형성한다. 연통홀(350)은 안착홈 주변부 상면과 안착홈(320) 상면 간의 간극으로 인해 형성되므로 렌즈부(500)가 바디부(300) 위에 위치하여 바디부(300)와 접하게 위치하여 안착홈(320)을 덮게 되면 렌즈부(500)와 안착홈(320)에 위치하고 있는 안착편(420) 사이에는 연통홀(350)이 형성된다. 이러한 연통홀(350)에 대해서는 아래에서 더욱 상세하게 설명하도록 한다.The lens unit 500 is also coupled to the seating groove 320 of the body 300 in a covering manner. Specifically, the lens unit 500 is coupled to cover at least a part of the seating groove 320. The lens unit 500 covers the seating groove 320 to form a communication hole 350 for communicating the inside and the outside of the opening 310 of the body 300. The communication hole 350 is formed by the gap between the upper surface of the seating groove and the upper surface of the seating groove 320 so that the lens unit 500 is positioned on the body 300 and is in contact with the body 300, A communication hole 350 is formed between the lens part 500 and the seating piece 420 located in the seating groove 320. [ The communication hole 350 will be described in more detail below.

도 4는 도 3에서 안착홈, 안착편 및 연통홀 부분을 확대하여 도시한 것이다. 도 4는 도 3에서 A영역을 확대하여 도시한 것이다.Fig. 4 is an enlarged view of the seating groove, the seating piece, and the communication hole portion in Fig. FIG. 4 is an enlarged view of the area A in FIG.

도 3과 도4를 참조하여, 안착홈(320), 안착편(420) 및 연통홀(350) 부분에 대해서 더욱 상세하게 설명하도록 한다.The seating groove 320, the seat piece 420, and the communication hole 350 will be described in more detail with reference to FIGS. 3 and 4. FIG.

상술한 것과 같이, 안착홈(320)은 바디부(300)의 상면에 형성된다. 안착홈(320)은 주변의 바디부(300)의 상면보다 하방(-z축 방향)으로 함몰되게 형성된다. 안착홈(320)은 구체적으로, 주변의 바디부(300)의 상면에서 수직 방향(-z축 방향)으로 연장된 측면과 상기 측면에서 수평 방향(z축에 직교하는 방향)으로 연장된 하면을 포함한다. 여기서, 안착홈(320)의 하면을 안착면(321)으로 지칭할 수도 있다.As described above, the seating groove 320 is formed on the upper surface of the body part 300. [ The seating groove 320 is formed to be recessed downward (-z axis direction) from the upper surface of the surrounding body part 300. Specifically, the seating groove 320 has a side extending in the vertical direction (-z axis direction) on the upper surface of the peripheral body part 300 and a side extending in the horizontal direction (direction orthogonal to the z axis) . Here, the lower surface of the seating groove 320 may be referred to as a seating surface 321.

안착편(420)은 안착홈(320)의 안착면(321)에 안착된다. 구체적으로, 안착편(420)은 안착면(321)의 일부를 덮는다. 안착편(420)은 안착면(321)보다 작은 넓이로 형성되어 안착면(321)의 일부만을 덮고 안착면(321)의 나머지 부분은 덮지 않고 노출되게 된다. 또한, 안착편(420)은 안착홈(320)의 깊이(h1)보다 작은 두께(h2)로 형성된다. 따라서 안착홈(320)에는 안착편(420)이 안착되더라도 빈 공간이 형성되게 된다.The seat piece 420 is seated on the seating surface 321 of the seating groove 320. Specifically, the seat piece 420 covers a part of the seating surface 321. [ The seat piece 420 is formed to have a smaller area than the seating surface 321 and covers only a part of the seating surface 321 and is exposed without covering the rest of the seating surface 321. [ In addition, the seat piece 420 is formed with a thickness h2 that is smaller than the depth h1 of the seating groove 320. [ Therefore, even if the seating piece 420 is seated in the seating groove 320, an empty space is formed.

안착홈(320)은 상부가 개방된 형태로 형성되는데, 안착홈(320)의 상부는 렌즈부(500)에 의해 덮이게 된다. 안착홈(320)이 렌즈부(500)에 의해 덮이면 연통홀(350)이 형성된다. 연통홀(350)은 구체적으로, 안착홈(320)의 측면과 하면 및 렌즈부(500)의 하면에 의해 둘러싸인 개구이다. 연통홀(350)은 바디부(300)의 개구부(310)의 내부와 외부를 연통시킨다.The upper part of the seating groove 320 is covered by the lens part 500. When the seating groove 320 is covered with the lens portion 500, a communication hole 350 is formed. Specifically, the communication hole 350 is an opening surrounded by a side surface and a bottom surface of the mounting groove 320 and a bottom surface of the lens portion 500. The communication hole 350 allows the inside and the outside of the opening 310 of the body part 300 to communicate with each other.

연통홀(350)의 내부에는 안착편(420)이 위치하게 된다. 그러나 안착편(420)은 연통홀(350) 내부를 완전히 밀폐하지 않고, 빈 공간이 형성되게 된다. 상기 빈 공간을 통해 바디부(300)의 개구부(310)의 내부와 외부가 연통되게 된다.The seating piece 420 is positioned inside the communication hole 350. However, the seat piece 420 does not completely seal the inside of the communication hole 350, and an empty space is formed. The inside and the outside of the opening 310 of the body part 300 are communicated with each other through the empty space.

연통홀(350)은 바디부(300)의 개구부(310) 내부에 남아있을 수 있는 가스(에폭시 등 접착제 등의 경화 과정에서 발생하는 가스)를 외부로 배출시키는 용도로 사용될 수 있다. 또한, 연통홀(350)은 바디부(300)의 개구부(310) 내부의 습기를 외부로 배출하는 용도로 사용되어 렌즈부(500)의 내측면이 습기로 인해 불투명해지는 것을 방지할 수 있다.The communication hole 350 may be used to discharge gas (gas generated during the curing process of an adhesive such as an epoxy) that may remain in the opening 310 of the body part 300 to the outside. The communication hole 350 is used for discharging the moisture inside the opening portion 310 of the body portion 300 to the outside so that the inner surface of the lens portion 500 can be prevented from becoming opaque due to moisture.

도 5는 본 발명의 일 실시예에 따른 발광 패키지의 렌즈부의 사시도이다. 도 3 및 도 5를 참조하여 본 발명의 발광 패키지의 렌즈부(500)에 대해서 상세하게 설명하도록 한다.5 is a perspective view of a lens portion of a light emitting package according to an embodiment of the present invention. 3 and 5, the lens unit 500 of the light emitting package of the present invention will be described in detail.

렌즈부(500)는 한 매의 렌즈로 형성된다. 한 매의 렌즈는 바디부(300)의 개구부를 상부에서 덮는 형태로 형성된다. 렌즈부(500)는 테두리 부분에 해당하고, 실질적으로 굴절력이 없는 주변 부분 및 중심 부분에 해당하고, 대체적으로 굴절력이 있는 부분 중심 부분으로 구분된다. 렌즈부(500)의 주변 부분의 하면은 바디부(300) 및/또는 반사판(400)의 상면과 결합되어, 바디부(300)의 개구를 밀봉할 수 있다.The lens unit 500 is formed of a single lens. One lens is formed so as to cover the opening portion of the body portion 300 from above. The lens portion 500 corresponds to a rim portion, is divided into a peripheral portion and a central portion that have substantially no refracting power, and a central portion that has a refracting power. The lower surface of the peripheral portion of the lens unit 500 may be engaged with the upper surface of the body 300 and / or the reflection plate 400 to seal the opening of the body 300.

렌즈부(500)의 굴절력이 있는 중심 부분은 프레넬 렌즈(Fresnel lens)부(510) 및 볼록 렌즈부(550)를 포함한다. 중심 부분을 전체적으로 봤을 때, 프레넬 렌즈부(510)는 볼록 렌즈부(550)를 둘러싸는 형태로 형성된다. 구체적으로, 볼록 렌즈부(550)는 중심 프레넬 렌즈부(510)의 중심에서 일 방향으로 편심되어 위치하게 된다.The refracting central portion of the lens portion 500 includes a Fresnel lens portion 510 and a convex lens portion 550. The Fresnel lens portion 510 is formed to surround the convex lens portion 550 when the central portion is viewed as a whole. Specifically, the convex lens part 550 is positioned eccentrically in one direction from the center of the central Fresnel lens part 510. [

프레넬 렌즈부(510)는 렌즈의 두께를 줄이기 위해서 구면 또는 비구면 렌즈를 복수의 구분 렌즈부로 구분되어 형성된 렌즈이다. 프레넬 렌즈를 통해서 렌즈의 두께를 크게 하지 않고 구경이 큰 렌즈를 만들 수 있다는 장점이 있다.The Fresnel lens part 510 is a lens formed by dividing a spherical or aspherical lens into a plurality of divisional lens parts to reduce the thickness of the lens. It is possible to make a lens having a large aperture without increasing the thickness of the lens through the Fresnel lens.

프레넬 렌즈부(510)는 구분선(521~525)에 의해 구분되는 복수의 구분 렌즈부를 포함한다. 첨부한 도면에 표시된 3축 좌표계에서 프레넬 렌즈부(510)는 y축에 평행한 구분선(521~525)에 의해 복수의 구분 렌즈부로 구분된다. 구분 렌즈부는 첨부한 도면에 표시된 3축 좌표계에서 x축을 따라 배열되는 형태로 형성된다. 첨부한 도면을 참조하면, 프레넬 렌즈부(510)는 5개의 구분선(521~525)으로 구분된 6개의 구분 렌즈부를 포함한다.The Fresnel lens portion 510 includes a plurality of division lens portions that are separated by the dividing lines 521 to 525. In the three-axis coordinate system shown in the accompanying drawings, the Fresnel lens section 510 is divided into a plurality of division lens sections by dividing lines 521 to 525 parallel to the y-axis. The division lens unit is formed in a shape arranged along the x-axis in the three-axis coordinate system shown in the accompanying drawings. Referring to the accompanying drawings, the Fresnel lens portion 510 includes six division lens portions divided into five dividing lines 521 to 525.

복수의 구분 렌즈부는 전부 또는 대부분이 동일한 방향을 바라보도록 형성된다. 구체적으로, 복수의 구분 렌즈부의 70% 이상이 동일한 방향을 바라보도록 형성될 수 있다. 동일한 방향을 바라보도록 형성될 수 있다. 첨부한 도면을 참조하면, 프레넬 렌즈부(510)의 6개의 구분 렌즈부는 모두가 동일한 방향을 바라보도록 형성된다.The plurality of segment lens portions are formed so that all or most of them are facing the same direction. More specifically, 70% or more of the plurality of divisional lens units can be formed so as to face the same direction. And may be formed so as to face the same direction. Referring to the accompanying drawings, the six segment lens portions of the Fresnel lens portion 510 are all formed to face in the same direction.

복수의 구분 렌즈부의 전부 또는 대부분은 출사면(511~516)이 동일한 방향을 바라보도록 형성될 수 있다. 구체적으로, 복수의 구분 렌즈부의 출사면(511~516)은 첨부한 도면에 표시된 3축 좌표계에서 x축의 일 방향으로 기울어지게 형성될 수 있다. 첨부한 도면을 참조하면, 프레넬 렌즈부(510)는 6개의 구분 렌즈부의 출사면(511~516)은 모두 x축의 양의 방향으로 기울어지게 형성된다.All or most of the plurality of divisional lens portions can be formed such that the exit surfaces 511 to 516 face the same direction. Specifically, the exit surfaces 511 to 516 of the plurality of division lens units can be formed to be inclined in one direction of the x-axis in the three-axis coordinate system shown in the accompanying drawings. Referring to the accompanying drawings, the Fresnel lens portion 510 is formed such that the exit surfaces 511 to 516 of six divisional lens portions are inclined in the positive direction of the x-axis.

프레넬 렌즈부(510)의 출사면(511~516)은 상술한 것과 같이 일 방향으로 기울어지게 형성되지만, 프레넬 렌즈부(510)의 입사면은 실질적으로 평면으로 형성될 수 있다. 도 4에 도시된 것과 같이, 프레넬 렌즈부(510)의 출사면(511~516)에 대응하는 하면의 입사면은 프레넬 렌즈부(510)의 입사면이 아니라 볼록 렌즈부(550)의 입사면(552)으로 형성될 수 있다. 따라서 볼록 렌즈부(550)는 상면의 출사면(551)이 하면의 입사면(552)보다 더 작은 면적으로 형성될 수 있다.The exit surfaces 511 to 516 of the Fresnel lens portion 510 are formed to be inclined in one direction as described above, but the incident surface of the Fresnel lens portion 510 may be formed substantially flat. The incident surface of the lower surface corresponding to the exit surfaces 511 to 516 of the Fresnel lens portion 510 is not the entrance surface of the Fresnel lens portion 510 but the entrance surface of the convex lens portion 550 And may be formed as an incident surface 552. Therefore, the convex lens portion 550 can be formed with an area smaller than the incident surface 552 of the lower surface of the exit surface 551 of the upper surface.

볼록 렌즈부(550)는 상면의 출사면(551)과 하면의 입사면(552)을 포함한다. 볼록 렌즈부(550)의 출사면(551)과 입사면(552)은 모두 볼록인 형태로 형성될 수 있다. 볼록 렌즈부(550)는 양의 굴절력을 가진다. 볼록 렌즈부(550)의 출사면(551)과 입사면(552)은 모두 구면의 형상으로 형성되는 것이 바람직하다.The convex lens portion 550 includes an exit surface 551 on the upper surface and an incident surface 552 on the lower surface. Both the exit surface 551 and the incident surface 552 of the convex lens portion 550 may be formed in a convex shape. The convex lens portion 550 has a positive refractive power. It is preferable that both the exit surface 551 and the incident surface 552 of the convex lens portion 550 are formed in a spherical shape.

볼록 렌즈부(550)는 프레넬 렌즈부(510)에 의해 둘러싸이게 위치한다. 발광부(200)의 z축의 양의 방향에 해당하는 위치를 렌즈부(500)의 중심으로 하면, 볼록 렌즈부(550)는 상기 렌즈부(500)의 중심에서 일 방향으로 편심되게 형성된다. 구체적으로, 볼록 렌즈부(550)는 첨부한 도면에 표시된 3축 좌표계에서 x축의 음의 방향으로 편심되어 위치할 수 있다.The convex lens portion 550 is surrounded by the Fresnel lens portion 510. The convex lens part 550 is formed eccentrically in one direction from the center of the lens part 500 when the position corresponding to the positive direction of the z axis of the light emitting part 200 is the center of the lens part 500. [ Specifically, the convex lens unit 550 may be eccentrically positioned in the negative x-axis direction in the three-axis coordinate system shown in the accompanying drawings.

볼록 렌즈부(550)는 출사면(551)과 입사면(552)이 서로 다른 형상으로 형성될 수 있다. 상술한 것과 같이, 볼록 렌즈부(550)의 출사면(551)은 입사면(552)보다 더 작은 면적으로 형성될 수 있다. 또한, 볼록 렌즈부(550)의 출사면(551)은 입사면(552)보다 일 방향으로 편심되어 위치할 수 있다. 구체적으로, 볼록 렌즈부(550)의 출사면(551)은 입사면(552)보다 첨부한 도면에 표시된 3축 좌표계에서 x축의 음의 방향으로 편심되어 위치할 수 있다.The convex lens portion 550 may have a shape in which the exit surface 551 and the incident surface 552 are different from each other. As described above, the exit surface 551 of the convex lens portion 550 can be formed to have an area smaller than that of the incident surface 552. Further, the exit surface 551 of the convex lens portion 550 may be eccentrically positioned in one direction with respect to the incident surface 552. Specifically, the exit surface 551 of the convex lens portion 550 may be eccentrically positioned in the negative direction of the x-axis in the three-axis coordinate system shown in the attached drawings than the incident surface 552. [

프레넬 렌즈부(510)와 볼록 렌즈부(550) 사이에는 중간 영역(530)이 형성된다. 중간 영역(530)은 실질적으로 평면으로 형성되어, 굴절력이 없거나 거의 없도록 형성된다. 적어도 중간 영역(530)은 굴절력이 볼록 렌즈부(550)의 굴절력의 절대값보다 작게 형성된다. 렌즈부(500)의 출사면에서는 프레넬 렌즈부(510)의 출사면(511~516)과 볼록 렌즈부(550)의 출사면(551) 사이에 실질적으로 평면으로 형성된 중간 영역(530)의 출사면(531)이 상대적으로 명확하게 구분된다. 반면에, 렌즈부(500)의 입사면에서는 프레넬 렌즈부(510)의 입사면 부분이 실질적으로 평면으로 형성되어 중간 영역(530)의 입사면이 없거나 명확하게 구분되지 않을 수 있다.An intermediate region 530 is formed between the Fresnel lens portion 510 and the convex lens portion 550. The intermediate region 530 is formed to be substantially planar, and is formed with little or no refracting power. At least the intermediate region 530 is formed such that the refractive power is smaller than the absolute value of the refractive power of the convex lens portion 550. [ An intermediate region 530 formed substantially in a plane between the exit surfaces 511 to 516 of the Fresnel lens portion 510 and the exit surface 551 of the convex lens portion 550 is formed on the exit surface of the lens portion 500 The emitting surface 531 is relatively clearly distinguished. On the other hand, on the incident surface of the lens unit 500, the incident surface portion of the Fresnel lens portion 510 may be formed substantially flat so that the incident surface of the intermediate region 530 may not exist or may not be clearly distinguished.

이러한 렌즈부(500)는 발광부(200)가 생성하는 빛을 광축 기준으로 일 방향으로 편중되게 굴절시킨다. 구체적으로, 발광부(200)가 생성한 빛의 빔은 렌즈부(500)에 입사하기 전에는 z축에 평행한 중심축을 가진다. 발광부(200)가 생성한 빛의 빔이 렌즈부(500)를 통과하여 출사한 후에는 z축에서 기울어진 방향의 중심축을 가지게 된다. 구체적으로, 첨부한 도면에 도시된 렌즈부(500)를 통과하면 발광부(200)가 생성한 빛의 빔은 렌즈부(500)를 통과하여 출사한 후에는 x축의 양의 방향으로 기울어진 방향의 중심축을 가지게 된다.The lens unit 500 refracts the light generated by the light emitting unit 200 in one direction with respect to the optical axis. Specifically, the beam of light generated by the light emitting unit 200 has a central axis parallel to the z-axis before entering the lens unit 500. After the beam of light generated by the light emitting unit 200 passes through the lens unit 500 and emerges, the light axis has a central axis inclined in the z-axis direction. Specifically, after passing through the lens unit 500 shown in the accompanying drawings, the light beam generated by the light emitting unit 200 passes through the lens unit 500 and is emitted in a direction inclined in the positive direction of the x axis As shown in FIG.

상술한 렌즈부(500)의 형태에 의해서, 발광부(200)가 생성한 빛은 상당한 수준으로 집광되는 것을 유지하면서도 빔의 중심축이 적절한 각도로 기울어질 수 있다. 또한, 동일한 기울임을 달성하는 다른 광학적 형태의 렌즈와 비교했을 때 그 두께를 상대적으로 얇게 유지할 수 있다. 렌즈부(500)의 두께를 얇게 유지하는 것은 발광 패키지 전체의 높이를 낮출 수 있는 것을 의미하는 것이고, 이는 발광 패키지가 탑재되는 전자 장치의 소형화 및 박형화에 기여할 수 있다.The shape of the lens unit 500 described above allows the center axis of the beam to be inclined at an appropriate angle while maintaining the light generated by the light emitting unit 200 to be collected at a considerable level. It is also possible to keep its thickness relatively thin compared to other optical lenses that achieve the same tilt. Keeping the thickness of the lens unit 500 thin can mean reducing the overall height of the light emitting package, which can contribute to downsizing and thinning of the electronic device on which the light emitting package is mounted.

본 발명은 첨부한 도면에 도시된 렌즈부(500)의 구체적인 형태에 의해서 한정치 않음은 자명하다. 본 발명이 속하는 기술분야에서 통상의 기술자는 프레넬 렌즈부(510)와 볼록 렌즈부(550)의 위치 관계, 프레넬 렌즈부(510)의 출사면(511~516) 및 입사면의 각도 및 볼록 렌즈부(550)의 굴절력 등을 조절하여 발광부(200)의 빛이 굴절되는 정도 등을 용이하게 조절할 수 있을 것이다.It is to be understood that the present invention is not limited by the specific form of the lens unit 500 shown in the accompanying drawings. A person skilled in the art will appreciate that the positional relationship between the Fresnel lens portion 510 and the convex lens portion 550, the angle between the exit surface 511 to 516 of the Fresnel lens portion 510 and the incident surface, The degree of refraction of light of the light emitting unit 200 and the like can be easily adjusted by adjusting the refracting power of the convex lens unit 550 or the like.

이상, 본 발명의 ~의 실시예들에 대해 설명하였다. 본 발명은 상술한 실시예 및 첨부한 도면에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자의 관점에서 다양한 수정 및 변형이 가능할 것이다. 따라서 본 발명의 범위는 본 명세서의 청구범위뿐만 아니라 이 청구범위와 균등한 것들에 의해 정해져야 한다.The embodiments of the present invention have been described above. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and changes may be made by those skilled in the art to which the present invention pertains. Accordingly, the scope of the present invention should be determined not only by the claims of the present specification, but also by equivalents to the claims.

100: 베이스 기판 200: 발광부100: base substrate 200: light emitting portion

300: 바디부 310: 개구부300: body part 310: opening

320: 안착홈 321: 안착면320: seat groove 321: seat surface

350: 연통홀 400: 반사판350: communication hole 400: reflector

410: 반사면 420: 안착편410: reflective surface 420: seat surface

500: 렌즈부 510: 프레넬 렌즈부500: lens unit 510: Fresnel lens unit

530: 중간 영역 550: 볼록 렌즈530: intermediate area 550: convex lens

Claims (13)

베이스 기판;A base substrate; 상기 베이스 기판에 결합된 발광부;A light emitting unit coupled to the base substrate; 상기 발광부의 주변을 둘러싸면서 상기 발광부가 내부에 위치하는 관통홀을 형성하고, 구면으로 형성된 반사면을 포함하는 반사판; 및A reflection plate which surrounds the periphery of the light emitting unit and forms a through hole in which the light emitting unit is located, the reflection plate including a reflection surface formed in a spherical shape; And 상기 반사판의 상부에 위치하여 상기 관통홀을 덮고, 상기 발광부가 생성하는 빛을 굴절시키는 렌즈부A lens unit disposed on the reflection plate to cover the through hole and to refract light generated by the light emitting unit, 를 포함하는 발광 패키지.. 제1항에 있어서,The method according to claim 1, 상기 베이스 기판에 결합되고, 상기 반사판이 안착되는 안착홈이 형성된 바디부를 더 포함하는 발광 패키지.And a body portion coupled to the base substrate and having a seating groove on which the reflection plate is seated. 제2항에 있어서,3. The method of claim 2, 상기 반사판은 상기 반사면의 상단에서 연장되고, 상기 바디부와 밀착되어 결합되는 안착편을 더 포함하는 발광 패키지.Wherein the reflection plate further comprises a seat piece extending from an upper end of the reflection surface and being tightly coupled to the body portion. 제3항에 있어서,The method of claim 3, 상기 바디부는 상면에 안착홈이 형성되고,The body part has a seating groove formed on an upper surface thereof, 상기 안착편은 상기 안착홈의 내부에 안착되는 발광 패키지.And the seat piece is seated inside the seating groove. 제4항에 있어서,5. The method of claim 4, 상기 안착편의 두께는 상기 안착홈의 깊이보다 작은 발광 패키지.Wherein a thickness of the seating piece is smaller than a depth of the seating recess. 제5항에 있어서,6. The method of claim 5, 상기 렌즈부는 상기 안착홈을 덮도록 상기 바디부 위에 위치하고,Wherein the lens unit is positioned on the body part to cover the seating groove, 상기 렌즈부와 상기 안착편 사이에 형성된 연통홀을 더 포함하는And a communication hole formed between the lens part and the seat piece 발광 패키지.Luminescent package. 제2항에 있어서,3. The method of claim 2, 상기 반사면은 상기 바디부의 안착홀에 밀착되어 결합되는 발광 패키지Wherein the reflective surface is in close contact with the seating hole of the body portion, 제1항에 있어서,The method according to claim 1, 상기 관통홀의 하단 개구는 상기 베이스 기판에 인접하게 위치하는 발광 패키지.And a lower end opening of the through hole is located adjacent to the base substrate. 제1항에 있어서,The method according to claim 1, 상기 렌즈부는 한 매의 렌즈로 형성되고, 프레넬 렌즈(Fresnel lens)부 및 구면의 볼록 렌즈부를 포함하는 발광 패키지.Wherein the lens portion is formed of a single lens, and includes a Fresnel lens portion and a spherical convex lens portion. 제9항에 있어서,10. The method of claim 9, 상기 프레넬 렌즈부는 상기 볼록 렌즈부를 둘러싸는 형태인 발광 패키지.And the Fresnel lens portion surrounds the convex lens portion. 제9항에 있어서,10. The method of claim 9, 상기 볼록 렌즈부는 상기 렌즈부의 중심에서 일 방향으로 편심되어 위치하는 발광 패키지.And the convex lens portion is positioned eccentrically in one direction at the center of the lens portion. 제9항에 있어서,10. The method of claim 9, 상기 프레넬 렌즈부 및 상기 블록 렌즈부 사이에는 중간 영역이 형성되는 발광 패키지.And an intermediate region is formed between the Fresnel lens portion and the block lens portion. 제12항에 있어서,13. The method of claim 12, 상기 중간 영역은 평면이고, 굴절률의 절대값이 상기 볼록 렌즈부의 굴절력의 절대값보다 작은 발광 패키지.Wherein the intermediate region is flat and the absolute value of the refractive index is smaller than the absolute value of the refractive power of the convex lens portion.
PCT/KR2017/012564 2017-09-27 2017-11-08 Light emitting package Ceased WO2019066130A1 (en)

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KR20060124867A (en) * 2005-05-26 2006-12-06 서울반도체 주식회사 Back light emitting device
US20070091613A1 (en) * 2005-10-21 2007-04-26 Eastman Kodak Company Backlight using surface-emitting light sources
KR100744031B1 (en) * 2005-12-21 2007-08-01 서울반도체 주식회사 Light Emitting Device Including Fresnel Lens
KR101291477B1 (en) * 2012-09-25 2013-07-30 김종태 Illumination lens for led and illumination apparatus using the same
WO2016057588A2 (en) * 2014-10-07 2016-04-14 Corning Incorporated Direct view display device and light unit for direct view display device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060124867A (en) * 2005-05-26 2006-12-06 서울반도체 주식회사 Back light emitting device
US20070091613A1 (en) * 2005-10-21 2007-04-26 Eastman Kodak Company Backlight using surface-emitting light sources
KR100744031B1 (en) * 2005-12-21 2007-08-01 서울반도체 주식회사 Light Emitting Device Including Fresnel Lens
KR101291477B1 (en) * 2012-09-25 2013-07-30 김종태 Illumination lens for led and illumination apparatus using the same
WO2016057588A2 (en) * 2014-10-07 2016-04-14 Corning Incorporated Direct view display device and light unit for direct view display device

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