KR100643604B1 - Free bending backlight unit - Google Patents

Free bending backlight unit Download PDF

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Publication number
KR100643604B1
KR100643604B1 KR1020050053771A KR20050053771A KR100643604B1 KR 100643604 B1 KR100643604 B1 KR 100643604B1 KR 1020050053771 A KR1020050053771 A KR 1020050053771A KR 20050053771 A KR20050053771 A KR 20050053771A KR 100643604 B1 KR100643604 B1 KR 100643604B1
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KR
South Korea
Prior art keywords
flexible
guide plate
backlight unit
light guide
flexible light
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Application number
KR1020050053771A
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Korean (ko)
Inventor
유영호
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화우테크놀러지 주식회사
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Priority to KR1020050053771A priority Critical patent/KR100643604B1/en
Priority to PCT/KR2005/003539 priority patent/WO2006137623A1/en
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Publication of KR100643604B1 publication Critical patent/KR100643604B1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/02—Mobile visual advertising by a carrier person or animal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/04—Mobile visual advertising by land vehicles
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates

Abstract

A flexible backlight unit is provided to realize the flexural transformation, thereby facilitating the installation at any structures having a curved surface, such as vehicles, by coupling a flexible light guiding plate and a PCB such that flat surfaces of the flexible light guiding plate and the PCB parallels each other. A flexible light guiding plate(10) has a plurality of V-shaped grooves(11), concave and convex dots, or printing dots. The flexible light guiding plate is formed of a transparent synthetic resin. A plurality of LEDs(Light Emitting Diodes)(20) and electronic elements are mounted on a PCB(Printed Circuit Board)(30). A reflective sheet is provided on a rear surface of the flexible light guiding plate. The PCB is coupled with the flexible light guiding plate such that a portion of a flat surface of the PCB overlaps one side surface of the flexible light guiding plate.

Description

휨 변형이 자유로운 연성 백라이트 유니트{FREE BENDING BACKLIGHT UNIT} Flexible backlight unit free of warping deformation {FREE BENDING BACKLIGHT UNIT}

도 1a는 일반적인 도광판의 구성을 보이는 후면도Figure 1a is a rear view showing the configuration of a typical light guide plate

도 1b는 도 1a의 A-A선 단면 일부 상세도FIG. 1B is a partial detailed cross-sectional view taken along line A-A of FIG. 1A

도 2는 본 발명에 따른 일 실시예의 구성을 보이는 사시도Figure 2 is a perspective view showing the configuration of an embodiment according to the present invention

도 3a는 도 2의 단면 일부 상세도3A is a partial detailed cross-sectional view of FIG. 2

도 3b는 도 3a에 대응하는 다른 실시예의 예시도3B is an illustration of another embodiment corresponding to FIG. 3A

도 3c는 도 3a에 대응하는 또 다른 실시예의 예시도3C is an illustration of another embodiment corresponding to FIG. 3A

도 4a 내지 도 4c는 본 발명에 따른 일 사용상태 예시도Figures 4a to 4c is an illustration of one use state according to the present invention

*도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1: 본 발명의 휨 변형이 자유로운 연성 백라이트 유니트1: Flexible backlight unit of the present invention free of bending deformation

10: 연성 도광판 11: V홈 20: 엘이디(광원)10: flexible light guide plate 11: V groove 20: LED (light source)

30: 피씨비 31: 평탄면 40: 반사시트30: PCB 31: Flat surface 40: Reflective sheet

51: 접착제 53: 체결수단 70: 반사커버51: adhesive 53: fastening means 70: reflective cover

본 발명은 백라이트 유니트에 관한 것으로서, 특히 다수 엘이디의 설치가 효율적으로 이루어짐과 동시에 연성 백라이트 유니트의 특징인 자유로운 휨 변형을 구현하여 차량과 같이 곡면을 포함하는 어떤 구조물에도 설치가 용이하게 이루어짐으로써 야간시 시선 집중기능이 탁월한 역동적인 광고수단 및 디스플레이수단을 제공하며, 독립적으로 설치 및 사용이 가능함으로써 광고용 현수막, 야간경기 응원용구, 피켓, 교통경찰 또는 도로 청소원들이 야간시 착용하는 발광띠, 완장, 샌드위치맨의 앞뒤 걸개 등 그 적용영역이 획기적으로 확장되도록 하는 휨 변형이 자유로운 연성 백라이트 유니트에 관한 것이다.The present invention relates to a backlight unit, in particular, the installation of a number of LEDs at the same time and at the same time implements the free bending deformation characteristic of the flexible backlight unit is easy to install on any structure including a curved surface, such as a vehicle at night It provides dynamic advertising means and display means with excellent attention-focusing function, and can be installed and used independently, so that advertising banners, night game cheering tools, pickets, traffic police or road cleaners wear night bands, armbands and sandwiches at night. The present invention relates to a flexible backlight unit that is free of warpage deformation such that its application area such as the front and rear hangers of the man is significantly expanded.

일반적으로 엘시디(LCD), 광고용, 조명용, 바닥의 전시조명, 유도로 및 데코레이션 등으로 사용되는 백라이트 유니트(Back Light Unit)는 빛을 발광하는 광원이 투광 가능한 아크릴판으로 이루어지는 도광판의 일측에 설치되고, 상기 도광판은 광원의 빛의 경로 및 산란을 유도하기 위하여 일측 표면에 소정 패턴의 홈, 요철 돗트 또는 프린팅 돗트를 형성하여 구성된다.In general, the backlight unit used for LCD, advertising, lighting, exhibition lighting on the floor, induction furnace and decoration is installed on one side of the light guide plate made of an acrylic plate that emits light. The light guide plate is formed by forming a groove, an uneven dot or a printing dot of a predetermined pattern on one surface in order to induce a path and scattering of light of the light source.

도 1a는 일반적인 백라이트 유니트(100)의 후면도이고, 도 1b는 도 1a의 A-A선 단면 일부 상세도이다.FIG. 1A is a rear view of a general backlight unit 100, and FIG. 1B is a partial detailed cross-sectional view taken along line A-A of FIG. 1A.

도 1a 및 도 1b를 참고하여 그 구조를 살펴보면, 투광가능한 재질로 된 도광판(110)의 측면에 빛을 발광하는 광원(120)이 배치되는데, 상기 도광판의 후면에는 측면에서 발광된 빛을 디스플레이 필름(140)이 취부되는 도광판(110) 전면으로 균 일하게 산란시키기 위한 수평 및 수직 V홈(112)이 다수개 형성되며, 상기 V홈이 형성된 도광판(110)의 후면에는 PET 재질의 반사시트(150)가 부착된다.Looking at the structure with reference to Figures 1a and 1b, a light source 120 for emitting light is disposed on the side of the light guide plate 110 made of a transmissive material, the light emitted from the side of the light guide plate display film A plurality of horizontal and vertical V-grooves 112 for uniformly scattering are formed on the front of the LGP 110 to which the 140 is mounted, and the reflective sheet of PET material is formed on the rear of the LGP 110 where the V-grooves are formed. 150) is attached.

이와 같은 구성의 도광판(110)은 광원으로부터 조사된 빛을 도광판의 전면으로 굴절, 산란시키는 V홈(112)의 간격이 광원(120)과 가까울수록 조사된 빛의 손실량이 적어지게 되므로 멀리 배치하고, 광원으로부터 멀어질수록 빛이 투과되는 과정에서 손실되는 양이 많아지게 되므로 점진적으로 좁게 배열하여 휘도의 균일화를 기하고 있다.The light guide plate 110 having such a configuration is disposed farther away as the distance between the V grooves 112 that refracts and scatters the light emitted from the light source to the front surface of the light guide plate is closer to the light source 120. As the distance from the light source increases, the amount of loss in the process of transmitting light increases, so that the luminance is gradually narrowed.

그러나, 종래 기술은 도광판(110)이 경질로 이루어져 벽체나 스탠드에 의지하여 고정적으로만 설치됨으로써 디스플레이기능이 우수한 장점에도 불구하고 활용영역에 제약이 따르는 문제점이 있었다.However, the conventional technology has a problem in that the light guide plate 110 is made of hard and fixedly installed only on a wall or a stand, and thus the display area is limited despite the advantages of excellent display function.

또한, 도광판을 굽힐 수가 없어 운반 및 보관 관리에도 어려움이 있었다.In addition, the light guide plate can not be bent, there was a difficulty in transport and storage management.

본 출원인은 이러한 문제점에 대한 대안으로서 특허출원 제2005-0011900호로 개시된 "유연성과 착탈수단을 겸비한 백라이트 유니트"를 제안한 바 있다.The applicant has proposed a "backlight unit with flexibility and detachment means" disclosed in Patent Application No. 2005-0011900 as an alternative to this problem.

상기 선출원 기술은 도광판을 연질 합성수지재로 되는 연성 도광판으로 하여 유연성을 갖도록 하고 설치물에 탈부착이 자유롭도록 벨크로 파이버 파스너 등과 같은 착탈수단을 구비하여 의복 등에 부착이 가능토록 함으로써 움직이는디스플레이수단이 되며 보관 및 관리가 간편해지는 것이다.The pre-application technology is a flexible light guide plate made of a soft synthetic resin material to have flexibility and to be detachable to the installation to be detachable means such as Velcro fiber fasteners to be attached to clothes, such as moving display means and storage and management Will be simpler.

그런데, 이와 같은 연성 도광판을 사용하는 백라이트 유니트에 있어서는 광원을 보다 효율적으로 설치할 수 있어야 되는 과제가 대두되었다.By the way, in the backlight unit using such a flexible light guide plate, the subject which should be able to install a light source more efficiently has arisen.

즉, 도광판의 휨을 자유롭게 하기 위하여 광원인 엘이디소자 및 그 전원부재 를 개별적으로 도광판에 취부함으로써 생산성면에서 문제가 되었다In other words, in order to free the warpage of the light guide plate, the LED element and the power supply member, which are light sources, are separately attached to the light guide plate, which causes problems in terms of productivity.

본 발명은 상기한 문제점을 해소하기 위하여 안출된 것으로서,The present invention has been made to solve the above problems,

본 발명의 목적은 다수 엘이디의 설치가 효율적으로 이루어짐과 동시에 연성 백라이트 유니트의 특징인 자유로운 휨 변형을 구현하여 차량과 같이 곡면을 포함하는 어떤 구조물에도 설치가 용이하게 이루어짐으로써 야간시 시선 집중기능이 탁월한 역동적인 광고수단 및 디스플레이수단으로서의 휨 변형이 자유로운 연성 백라이트 유니트를 제공함에 있다.It is an object of the present invention to efficiently install a large number of LEDs and at the same time to implement free bending deformation, which is a characteristic of a flexible backlight unit, can be easily installed on any structure including a curved surface such as a vehicle, thereby providing excellent attention at night. The present invention provides a soft backlight unit that is free of bending deformation as dynamic advertising means and display means.

본 발명의 다른 목적은 독립적으로 설치 및 사용이 가능함으로써 광고용 현수막, 야간경기 응원용구, 피켓, 교통경찰 또는 도로 청소원들이 야간시 착용하는 발광띠, 완장, 샌드위치맨의 앞뒤 걸개 등 그 적용영역이 획기적으로 확장되는 휨 변형이 자유로운 연성 백라이트 유니트를 제공함에 있다.Another object of the present invention can be installed and used independently, such as advertising banners, night games cheering equipment, pickets, traffic police or road cleaners wearing light bands, armbands, the front and back hangers of sandwichmen, etc. It is to provide a flexible backlight unit that is free to bend deformation extended to.

상기한 목적을 달성하는 본 발명에 따른 휨 변형이 자유로운 연성 백라이트 유니트는, 다수의 V홈, 요철 돗트 또는 프린팅 돗트가 형성되며 투광 가능한 연질합성수지재로 이루어지는 연성 도광판, 상기 연성 도광판에 빛을 입사시키기 위한 광원으로서의 다수의 엘이디와 상기 엘이디 및 전자소자가 탑재되는 피씨비, 상기 연성 도광판의 후면에 부여되는 반사시트를 포함하여 구성되는 백라이트 유니트에 있어서,Flexible flexible backlight unit according to the present invention to achieve the above object is a flexible light guide plate made of a light-transmissive soft synthetic resin material, a plurality of V-grooves, uneven dots or printing dots are formed, the light guide plate A backlight unit comprising a plurality of LEDs as a light source for the light source, a PC on which the LEDs and the electronic elements are mounted, and a reflective sheet provided on a rear surface of the flexible light guide plate,

엘이디가 탑재되는 상기 피씨비는 평탄면의 일부가 연성 도광판의 일측면 선단부에 겹쳐지게 결합됨을 특징으로 한다.The PC on which the LED is mounted is characterized in that a part of the flat surface is coupled to overlap one end portion of the flexible light guide plate.

이하, 본 발명의 휨 변형이 자유로운 연성 백라이트 유니트에 대한 실시예를 첨부도면을 참조하여 보다 상세히 설명한다.Hereinafter, an embodiment of a flexible backlight unit of which the bending deformation of the present invention is free will be described in more detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 일 실시예의 구성을 보이는 사시도, 도 3a는 도 2의 단면 일부 상세도이다. 도 2 및 도 3a에 도시된 바와 같이, 본 발명에 따른 휨 변형이 자유로운 연성 백라이트 유니트(1)는, 다수의 V홈(11), 요철 돗트 또는 프린팅 돗트가 형성되며 투광 가능한 연질합성수지재로 이루어지는 연성 도광판(10), 상기 연성 도광판에 빛을 입사시키기 위한 광원으로서의 다수의 엘이디(LED)(20)와 상기 엘이디 및 전자소자가 탑재되는 피씨비(PCB)(30), 상기 연성 도광판의 후면에 부여되는 반사시트(50)를 포함하여 구성되는 백라이트 유니트에 있어서, 엘이디(20)가 탑재되는 상기 피씨비(30)는 평탄면(31)의 일부가 상기 연성 도광판의 일측면(13) 선단부에 겹쳐지게 결합되는 것이다.Figure 2 is a perspective view showing the configuration of an embodiment according to the present invention, Figure 3a is a partial detailed cross-sectional view of FIG. As shown in Figure 2 and 3a, the flexible backlight unit 1 is free of bending deformation according to the present invention, a plurality of V-grooves 11, uneven dots or printing dots formed of a flexible synthetic resin material that can be transmitted A flexible light guide plate 10, a plurality of LEDs (LED) 20 as a light source for injecting light into the flexible light guide plate, PCB (30) on which the LED and the electronic device is mounted, the rear side of the flexible light guide plate In the backlight unit configured to include a reflective sheet 50, the PCB 30 on which the LED 20 is mounted so that a part of the flat surface 31 overlaps with a tip of one side surface 13 of the flexible light guide plate. To be combined.

여기서, 상기 엘이디는 피씨비에 대하여 직립 설치되거나 연결단자를 절곡하여 연성 도광판의 길이방향으로 설치되어도 무방하다(도 3a, 도 3b 참조).Here, the LED may be installed upright with respect to the PCB or may be installed in the longitudinal direction of the flexible light guide plate by bending the connecting terminal (see FIGS. 3A and 3B).

또한 상기 엘이디(20)는 고휘도의 SMD타입(20a) 또는 일반형(20b)으로 되고, 상기 연성 도광판의 일측변 또는 두 변 이상에 설치될 수 있으며, 상기 연성 도광판(10)은 상하좌우 등 어떤 방향으로 두루마리가 가능할 정도로 유연하고 투광성이 양호한 수지재로 이루어진다.In addition, the LED 20 is a high brightness SMD type (20a) or a general type (20b), can be installed on one side or two or more sides of the flexible light guide plate, the flexible light guide plate 10 in any direction, such as up, down, left and right It is made of a resin material which is flexible enough to be rollable and has good light transmittance.

또한, 상기 피씨비(30)는 연성 도광판(10)에 접착 결합됨이 바람직하다.In addition, the PCB 30 is preferably bonded to the flexible light guide plate 10.

이를 위하여 상기 피씨비(30)의 접착부분에는 접착제가 도포된 후 이형지가 부여되거나 양면접착테이프(51)를 이용하여도 무방하다.To this end, the adhesive portion of the PC 30 may be given a release paper after an adhesive is applied or a double-sided adhesive tape 51 may be used.

상기 피씨비(30)는 연성 도광판에 피스나 리벳과 같은 체결수단(53)을 이용하여 고정될 수도 있다(도 3c 참조).The PC 30 may be fixed to the flexible light guide plate using fastening means 53 such as a piece or a rivet (see FIG. 3C).

상기 피씨비(30)는 휨이 자유로운 유연재질로 이루어진다. 하지만 박판으로 이루어짐으로 일반적인 피씨비 소재로 되어도 무방하다.The PC 30 is made of a flexible material free of bending. However, since it is made of sheet metal, it can be made of general PC material.

그리고, 상기 엘이디(20) 및 피씨비(30)를 둘러싸는 예를 들면 합성수지재 시트와 같은 유연재질의 반사커버(70)가 부여된다. 상기 반사커버(70)는 엘이디(20)의 광손실을 차단할 뿐만 아니라 습기나 이물질로부터 피씨비 및 엘이디를 보호한다.Then, the reflective cover 70 of a flexible material such as a synthetic resin sheet, which surrounds the LED 20 and the PC 30, is provided. The reflective cover 70 not only blocks the optical loss of the LED 20, but also protects the PCB and the LED from moisture or foreign matter.

또한, 상기 피씨비(30)에 전원을 공급하기 위한 연결부 또는 배터리가 수반되는 것은 당업자라면 잘 알 것이다.In addition, it will be appreciated by those skilled in the art that a connection or battery for supplying power to the PC 30 is involved.

이와 같은 구성을 지닌 본 발명에 따른 휨 변형이 자유로운 연성 백라이트 유니트(1)의 작용 및 적용상태를 도 4a 내지 도 4c를 참고하여 살펴본다.The operation and application state of the flexible backlight unit 1 according to the present invention having such a configuration free of bending deformation will be described with reference to FIGS. 4A to 4C.

본 발명은 연성 도광판(10)의 일측면(13)에 피씨비(30)의 평탄면(31)이 겹쳐지게, 다시 말하면 두 구성부재의 평탄면(13)(31)이 평행하게 결합됨으로써 다수 엘이디의 설치가 효율적으로 이루어짐과 동시에 연성 도광판의 휨 변형과 동시적으 로 휨 변형이 발생된다.According to the present invention, the flat surface 31 of the PCB 30 overlaps with one side 13 of the flexible light guide plate 10, that is, the flat surfaces 13 and 31 of the two components are coupled in parallel to each other. At the same time, the bending deformation occurs simultaneously with the bending deformation of the flexible light guide plate.

즉, 다수의 엘이디(20)를 하나의 피씨비(30)에 설치하고 상기 피씨비(30)를 연성 도광판(10)에 단번에 접착함으로써 수 많은 엘이디(20)의 설치가 효율적으로 이루어져 생산성을 향상시킨다.That is, a plurality of LEDs 20 are installed in one PCB 30 and the plurality of LEDs 20 are adhered to the flexible light guide plate 10 at a time to efficiently install a number of LEDs 20, thereby improving productivity.

아울러, 피씨비의 평탄면(31)이 연성 도광판의 평평한 일측면(13)에 대하여 직교방향 결합이 아닌 평행방향으로 겹쳐 결합됨으로써 예를 들면 두루마리 타입으로 권취할 경우, 연성 도광판(10)을 따라 피씨비(30)도 함께 휘어지고 권취되어 연성 도광판의 특징인 자유로운 휨 변형을 구현하는 것이다.In addition, when the flat surface 31 of the PCB is coupled in parallel to the flat one side surface 13 of the flexible light guide plate instead of orthogonally coupled, it is wound, for example, in the form of a roll type, 30 is also bent and wound together to implement free flexural deformation, which is characteristic of flexible light guide plates.

이와 같은 본 발명에 따른 휨 변형이 자유로운 연성 백라이트 유니트(1)는, 예를 들면, 차량과 같이 곡면을 포함하는 어떤 구조물에도 설치가 용이하게 이루어지며, 활동성을 갖춘 대상물에 부가하여 야간에 공중의 시선 집중기능이 탁월한 역동적인 광고수단 및 디스플레이수단으로 작동하게 된다(도 4a, 도 4b 참조).The flexible backlight unit 1 according to the present invention is free of bending deformation according to the present invention, and can be easily installed on any structure including a curved surface, such as a vehicle. The gaze concentration function is excellent in dynamic advertising means and display means (see Figs. 4a, 4b).

이때 설치 대상물에 대한 고정은 양면접착테이프 또는 피스와 같은 체결수단을 이용한다.At this time, the fixing to the installation object uses a fastening means such as double-sided adhesive tape or piece.

또한, 본 발명은 차량과 같은 어떤 대상물에 고정되지 않고 독립적으로 설치 및 사용이 가능하다. 예를 들면, 광고용 현수막, 야간경기 응원용구, 피켓, 교통경찰 또는 도로 청소원들이 야간시 착용하는 발광띠, 완장, 샌드위치맨의 앞뒤 걸개 등 그 적용영역이 무궁무진하다(도 4c 참조).In addition, the present invention can be installed and used independently without being fixed to any object such as a vehicle. For example, advertising banners, night game cheering equipment, pickets, traffic police or road sweepers worn at night, such as light bands, armbands, the front and back hangers of sandwichmen are endless (see Figure 4c).

한편, 본 발명은 두루마리가 가능하여 대형일 경우에도 보관 및 운반이 자유로우며 관리 또한 매우 간편하다.On the other hand, the present invention can be rolled up, even in the case of large storage and transport is free and very easy to manage.

이상, 본 발명의 바람직한 실시예를 첨부된 도면들을 참조로 설명하였다. 여기서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.In the above, preferred embodiments of the present invention have been described with reference to the accompanying drawings. Here, the terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, but should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

이상에서 상세히 살펴 본 바와 같이, 본 발명에 따른 휨 변형이 자유로운 연성 백라이트 유니트는, 연성 도광판에 피씨비의 평탄면이 겹쳐지게 두 구성부재의 평탄면이 평행하게 결합됨으로써 다수 엘이디의 설치가 효율적으로 이루어짐과 동시에 연성 백라이트 유니트의 특징인 자유로운 휨 변형을 구현하여 차량과 같이 곡면을 포함하는 어떤 구조물에도 설치가 용이하게 이루어짐으로써 야간시 시선 집중기능이 탁월한 역동적인 광고수단 및 디스플레이수단을 제공하는 뛰어난 효과가 있다.As described in detail above, in the flexible backlight unit free of bending deformation according to the present invention, the flat surface of the two components are coupled in parallel so that the flat surface of the PCB is superimposed on the flexible light guide plate, so that the installation of multiple LEDs is efficiently performed. At the same time, it is easy to install on any structure including curved surface such as a vehicle by implementing free bending deformation, which is a characteristic of the flexible backlight unit, and provides an excellent advertising means and a display means with excellent visual attention at night. have.

또한, 독립적으로 설치 및 사용이 가능함으로써 광고용 현수막, 야간경기 응원용구, 피켓, 교통경찰 또는 도로 청소원들이 야간시 착용하는 발광띠, 완장, 샌드위치맨의 앞뒤 걸개 등 그 적용영역이 획기적으로 확장되는 탁월한 이점이 있다.In addition, it can be installed and used independently, which greatly expands its application areas such as advertising banners, night game cheering equipment, pickets, flashing bands worn by traffic police or road cleaners at night, armbands, and the back and back of sandwichmen. There is an advantage.

Claims (2)

다수의 V홈(11), 요철 돗트 또는 프린팅 돗트가 형성되며 투광 가능한 연질합성수지재로 이루어지는 연성 도광판(10), 상기 연성 도광판에 빛을 입사시키기 위한 광원으로서의 다수의 엘이디(20)와 상기 엘이디 및 전자소자가 탑재되는 피씨비(30), 상기 연성 도광판의 후면에 부여되는 반사시트(50)를 포함하여 구성되는 백라이트 유니트에 있어서,A plurality of V grooves 11, uneven dots or printing dots are formed, a flexible light guide plate 10 made of a light-transmissive soft synthetic resin material, a plurality of LEDs 20 as a light source for injecting light into the flexible light guide plate and the LEDs and In the backlight unit comprising a PC 30, the electronic device is mounted, a reflective sheet 50 provided on the rear surface of the flexible light guide plate, 엘이디(20)가 탑재되는 상기 피씨비(30)는 평탄면(31)의 일부가 상기 연성 도광판의 일측면(13) 선단부에 겹쳐지게 결합됨을 특징으로 하는 휨 변형이 자유로운 연성 백라이트 유니트.The PC (30) on which the LED (20) is mounted is a flexible backlight unit, the bending deformation is free, characterized in that a part of the flat surface 31 is coupled so as to overlap the front end of one side (13) of the flexible light guide plate. 제 1항에 있어서,The method of claim 1, 상기 피씨비(30)는 휨이 자유로운 유연재질로 이루어짐을 특징으로 하는 휨 변형이 자유로운 연성 백라이트 유니트.The PC 30 is a flexible backlight unit, the bending deformation is free, characterized in that made of a flexible material free of bending.
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