KR100300550B1 - Led backlight - Google Patents
Led backlight Download PDFInfo
- Publication number
- KR100300550B1 KR100300550B1 KR1019990008613A KR19990008613A KR100300550B1 KR 100300550 B1 KR100300550 B1 KR 100300550B1 KR 1019990008613 A KR1019990008613 A KR 1019990008613A KR 19990008613 A KR19990008613 A KR 19990008613A KR 100300550 B1 KR100300550 B1 KR 100300550B1
- Authority
- KR
- South Korea
- Prior art keywords
- light
- guide plate
- backlight
- circuit board
- printed circuit
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 claims abstract description 6
- 238000006748 scratching Methods 0.000 claims abstract description 3
- 230000002393 scratching effect Effects 0.000 claims abstract description 3
- 238000001746 injection moulding Methods 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 18
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
-
- 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
- G02B6/0073—Light emitting diode [LED]
-
- 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
- G02B6/009—Positioning aspects of the light source in the package
Abstract
본 발명은 싸이드 라이트 방식이 적용된 엘.이.디 백라이트에 관한 것으로, 더욱 상세하게는 투명 도광판에 양측부로 광원을 배치하고, 이 도광판의 일면을 2중부식에 의해 반사확산처리된 다수개 반사돌기를 구성시켜, 광원으로 부터 발하는 빛을 다중반사시키므로서 면 광원을 획득할 수 있는 싸이드라이트 방식이 적용된 엘.이.디 백라이트에 관한 것이다.The present invention relates to an L.D. backlight having a side light method, and more particularly, a plurality of reflection protrusions in which light sources are disposed on both sides of a transparent light guide plate, and one surface of the light guide plate is diffused by double corrosion. It is related to the L.D. backlight with the side light method to obtain a surface light source by multi-reflecting the light emitted from the light source.
본 발명의 목적은 광원으로부터의 열전달을 최소화하여 이에따른 액정패널의 변형을 방지하여 제품신뢰도 및 내구성이 향상되도록하며 액정패널로 균일하게 고휘도의 빛을 조사할 수 있도록 구성되는 싸이드라이트 방식이 적용된 엘.이.디 백라이트를 제공함에 있다.An object of the present invention is to minimize the heat transfer from the light source to prevent the deformation of the liquid crystal panel accordingly to improve product reliability and durability and to apply a light-light method that is configured to irradiate high brightness light uniformly to the liquid crystal panel This is in providing a backlight.
상기한 목적을 달성하기 위한 본 발명의 구체적인 수단으로는;As a specific means of the present invention for achieving the above object;
다수개의 엘.이.디가 양측부로 배치구성되며 반사면을 갖는 인쇄회로기판과, 이 인쇄회로기판의 상부면으로 적층되며 2중부식처리에 의해 스크레칭면이 형성되는 다수개 반사돌기가 일면으로 구성되는 도광판과, 상기 인쇄회로기판과 도광판을 수용,고정하는 고정홈이 구성되며 상기 엘.이.디로부터 발하는 빛이 외부로 유출되는 것을 방지하는 반사판으로 이루어짐을 특징으로 하는 싸이드라이트 방식이 적용된 엘.이.디 백라이트를 구비하므로서 달성된다.A printed circuit board having a plurality of L.D. arranged on both sides and having a reflective surface, and a plurality of reflective protrusions laminated on the upper surface of the printed circuit board and having a scratching surface formed by double corrosion treatment The light guide plate is configured to include a fixed groove for receiving and fixing the printed circuit board and the light guide plate, and the side light method, characterized in that consisting of a reflective plate to prevent the light emitted from the L. This is achieved by having an applied L.D backlight.
Description
본 발명은 싸이드 라이트 방식이 적용된 엘.이.디 백라이트에 관한 것으로, 더욱 상세하게는 투명 도광판에 양측부로 광원을 배치하고, 이 도광판의 일면을 2중부식에 의해 반사확산처리된 반사돌기를 구성시켜, 광원으로부터 발하는 빛을 다중반사시키므로서 면 광원을 획득할 수 있는 싸이드라이트 방식이 적용된 엘.이.디 백라이트에 관한 것이다.The present invention relates to an L.D. backlight having a side light method. More specifically, a light source is disposed on both sides of a transparent light guide plate, and one surface of the light guide plate is configured to reflect-diffuse by double corrosion. The present invention relates to an L.D. backlight having a side light method capable of obtaining a surface light source by multi-reflecting light emitted from the light source.
일반적으로, 이동전화와 OA기기 및 오디오 등의 본체로는 문자 및 숫자등으로 표시되는 정보전달수단으로서, 전기적인 발광기능에 의해 사용자로 하여금 명확하게 정보를 인지할 수 있도록 한 디스플레이가 부착되어 사용되고 있는바,In general, the main body such as mobile phones, OA devices, and audio is used as information transmission means displayed by letters and numbers, and the display is attached to enable the user to recognize the information clearly by the electric light emitting function. There is,
이와같은 디스플레이의 일종으로 액정표시장치(LIQUID CRYSTAL DISPIAY), 즉 일정 온도의 범위에서 액체와 결정의 중간성질을 갖는 유기물인 액정을 새로운 표시소자로 하여 디스플레이에 적용한 표시장치가 주로 사용되고 있으며, 이와같은 액정표시장치로는 광원에서 발생한 빛을 직하방식으로 조사하는 백라이트(BACK LIGHT)가 구비되는 것이었다.As a kind of display, a liquid crystal display device (LIQUID CRYSTAL DISPIAY), that is, a display device in which a liquid crystal, which is an organic substance having an intermediate property of a liquid and a crystal in a certain temperature range, is used as a new display element, is mainly used. As a liquid crystal display device, a backlight for irradiating light generated from a light source in a direct manner is provided.
여기서, 백라이트는 램프에서 발생되는 빛이 외부로 방출되는 것을 방지하는 반사판(은박 테이프)과 램프홀더에 고정되는 광원(EL램프 등)과, 광원으로부터 입사되는 빛을 균일화하는 확산판이 적층구성되는 프리즘 쉬트형태로서 별도의 프레임에 수용되어 정보를 표시하는 액정패널의 뒷면으로 고정되는 것인데,Here, the backlight is a prism in which a reflector (silver foil tape) for preventing light emitted from the lamp from being emitted to the outside, a light source (EL lamp, etc.) fixed to the lamp holder, and a diffuser plate for uniformizing the light incident from the light source are laminated. As a sheet, it is housed in a separate frame and fixed to the back of the liquid crystal panel displaying information.
이와같이 직하방식이 적용된 종래 백라이트는 램프에서 발생되는 열이 상기 확산판 및 액정패널로 전달되어 온도에 민감하게 반응하는 액정패널의 색깔을 변환시키는 요소로 작용함에 따라 그 내구성 및 신뢰성이 저하되는 문제점을 갖는 것이었으며,As such, the backlight having the direct method applied to the backlight has a problem in that its durability and reliability are deteriorated as heat generated from a lamp is transferred to the diffusion plate and the liquid crystal panel to act as an element for converting the color of the liquid crystal panel which is sensitive to temperature. To have,
또 다른 형태로서 측광방식(SIDE LIGHT)이 적용된 백라이트는 빛을 편광시키는 편광판에 의해 빛이 도광판으로 전달되도록 광원을 도광판의 측부로 구성시킨 구조를 갖는 것으로, 이는 전술한 직하방식에서 발생되는 열상승의 문제점은 해소되었으나, 광원이 위치한 측부로만 빛이 전달되고 액정패널의 중앙부로는 빛전달량이 미약하여 정확한 정보표시가 이루어지지 못하는 문제점을 갖는 것이었다.In another embodiment, the backlight to which the side light is applied has a structure in which a light source is configured as a side of the light guide plate so that light is transmitted to the light guide plate by a polarizing plate that polarizes light. Although the problem has been solved, light is transmitted only to the side where the light source is located, and light transmission amount is weak to the central portion of the liquid crystal panel, thereby preventing accurate information from being displayed.
따라서, 본 발명은 전술한 종래 디스플레이가 갖는 제반적인 문제점을 해결하고자 창안된 것으로,Therefore, the present invention was devised to solve the general problems of the aforementioned conventional display,
본 발명의 목적은 광원으로부터의 열전달을 최소화하여 이에따른 액정패널의 변형을 방지하여 제품신뢰도 및 내구성이 향상되도록하며 액정패널로 균일하게 고휘도의 빛을 조사할 수 있도록 구성되는 싸이드라이트 방식이 적용된 엘.이.디 백라이트를 제공함에 있다.An object of the present invention is to minimize the heat transfer from the light source to prevent the deformation of the liquid crystal panel accordingly to improve product reliability and durability and to apply a light-light method that is configured to irradiate high brightness light uniformly to the liquid crystal panel This is in providing a backlight.
상기한 목적을 달성하기 위한 본 발명의 구체적인 수단으로는;As a specific means of the present invention for achieving the above object;
다수개의 엘.이.디가 양측부로 배치구성되며 반사면을 갖는 인쇄회로기판과, 이 인쇄회로기판의 상부면으로 적층되며 2중부식처리에 의해 스크레칭면이 형성되는 다수개 반사돌기이 일면으로 구성되는 도광판과, 상기 인쇄회로기판과 도광판을수용,고정하는 고정홈이 구성되며 상기 엘.이.디로부터 발하는 빛이 외부로 유출되는 것을 방지하는 반사판으로 이루어짐을 특징으로 하는 싸이드라이트 방식이 적용된 엘.이.디 백라이트를 구비하므로서 달성된다.A printed circuit board having a plurality of L.D. arranged on both sides and having a reflective surface, and a plurality of reflective protrusions stacked on the upper surface of the printed circuit board and having a scratching surface formed by double corrosion treatment on one surface thereof. The light guide plate is configured, and a fixing groove for accommodating and fixing the printed circuit board and the light guide plate is formed, and the light guide plate is applied to the light guide plate, characterized in that the light guide plate prevents the light emitted from the L.D. This is achieved by having an L.D. backlight.
도 1은 본 발명에 따른 싸이드라이트 방식이 적용된 엘.이.디 백라이트에 있어, 각 구성요소의 분해 사시도1 is an exploded perspective view of each component in the L.D. back light to which the light method according to the present invention is applied;
도 2는 싸이드라이트 방식이 적용된 엘.이.디 백라이트 결합단면도2 is a cross-sectional view of an L.D. backlight unit to which a side light method is applied;
도 3은 싸이드라이트 방식이 적용된 엘.이.디 백라이트의 작용상태도3 is an operational state diagram of the L.D. backlight applied to the side light method
도 4는 본 발명에 따른 싸이드라이트 방식이 적용된 엘.이.디 백라이드의 평면도Figure 4 is a plan view of the L. E. D backlight is applied to the side light method according to the present invention
<도면주요부위에 대한 부호의 설명><Explanation of symbols for major parts of drawing>
1 : 백라이트 2 : 인쇄회로기판 3 : 도광판 4 : 반사판DESCRIPTION OF SYMBOLS 1 Backlight 2 Printed circuit board 3 Light guide plate 4 Reflecting plate
21,21' : 엘.이.디 22 : 반사면 31 : 반사돌기 32 : 수용홈21,21 ': L.E.D. 22: Reflective surface 31: Reflective protrusion 32: Receiving groove
33 : 단턱 41 : 고정홈 42 : 결합구 411 : 갈림돌기33: step 41: fixing groove 42: coupler 411: fork
412 : 개방공 421 : 원형통공 H : 조사면 L : 외부연결선412: opening hole 421: circular hole H: irradiation surface L: external connection line
이하, 본 발명의 바람직한 실시예를 첨부도면에 의거 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 싸이드라이트 방식이 적용된 엘.이.디 백라이트에 있어, 각 구성요소의 분해 사시도이고, 도 2는 싸이드라이트 방식이 적용된 엘.이.디 백라이트 결합단면도이며, 도 3은 싸이드라이트 방식이 적용된 엘.이.디 백라이트의 작용상태도이고 도 4는 본 발명에 따른 싸이드라이트 방식이 적용된 엘.이.디 백라이드의 평면도로서 그 구성상태를 살펴보면;1 is an exploded perspective view of each component in the L. D. backlight having the applied sidelight method according to the present invention, FIG. 2 is a cross-sectional view of the L.D. backlight unit applied with the sidelight method, and FIG. 4 is a plan view of the L.D. backlight having the sidelight method applied thereto, and FIG. 4 is a plan view of the L.D. backlight having the sidelight method applied thereto according to the present invention;
다수개의 엘.이.디(21,21')가 배치구성되는 인쇄회로기판(2)과, 이 인쇄회로기판(2)의 상부면으로 적층되며 다수개 반사돌기(31)가 구성되는 도광판(3)과, 상기 인쇄회로기판(2)과 도광판(3)을 수용하는 형태로서 고정하는 반사판(4)으로 구성된다.A printed circuit board 2 having a plurality of L. D. 21 and 21 ′ arranged thereon, and a light guide plate having a plurality of reflective projections 31 stacked on an upper surface of the printed circuit board 2. 3) and a reflecting plate 4 which is fixed in a form for accommodating the printed circuit board 2 and the light guide plate 3.
여기서, 상기 인쇄회로기판(2)은 도 1에 도시된 바와같이 사각판상체를 취하되, 그 상부면 양측 종단부로는 적어도 다수개의 엘.이.디(21,21')가 일렬로서 일정간격을 두고 배열구성되며 상부면 전역에 걸쳐 백색 페인트가 도색처리된 반사면(22)이 형성되는 것으로,Here, the printed circuit board 2 takes a rectangular plate-like body as shown in FIG. 1, and at least a plurality of L. D. 21, 21 ′ are arranged at a predetermined interval on both sides of the upper surface thereof as a line. It is arranged with respect to the reflective surface 22 is formed that is painted white paint over the entire upper surface,
이와같이 배열구성되는 각 엘.이.디(21,21')로는 다이패드의 칩과 리드어태치로 본딩된 와이어가 외력에 의해 손상되는 것을 방지토록 몰딩처리함이 바람직하고, 저면으로는 외부연결선(L)이 납땜등의 접합수단에 의해 결선되는 것이다.Each of the L.D. 21, 21 'arranged in this way is preferably molded to prevent the wire bonded by the chip and lead attach of the die pad from being damaged by an external force, and on the bottom, an external connection line ( L) is connected by joining means such as soldering.
또한, 상기 도광판(3)은 도 1 내지 도 2에 도시된 바와같이 전술한 인쇄회로기판(2)과 동일한 크기로 구성되는 사각판상체로서, 상기 인쇄회로기판(2)의 엘.이.디(21,21')와 대응되는 양측 종단부로는 각 엘.이.디(21,21')를 수용하는 반원형 수용홈(32)이 상기 엘.이.디(21,21')와 동일 갯수로 구성되고, 상부면 테두리로는 단턱(33)이 형성되며, 하부면으로는 볼록형태의 반구형 반사돌기(31)가 다수개로서 형성되므로서 구성되는 것으로,In addition, the light guide plate 3 is a rectangular plate-like body having the same size as the above-described printed circuit board 2 as shown in Figs. 1 to 2, and the L.D. of the printed circuit board 2 is formed. The two end portions corresponding to (21, 21 ') have the same number of semicircular accommodating grooves (32) for accommodating each of the L.D. 21, 21'. Consists of the upper surface edge stepped 33 is formed, the lower surface is configured to be formed as a plurality of convex hemispherical reflective projections 31,
이와같은 도광판(3)의 구성재질로는 투명 아크릴 수지로서, 내 화학성 및 기계적 강도가 강하고, 가시광선의 투과율이 높으며, 변형이 쉽게 이루어지지 않는 것으로 알려져 있는 폴리 카보나이트(POLY CABONATE)를 적용함이 바람직한데,As the constituent material of the light guide plate 3, a transparent acrylic resin is preferably applied to polycarbonate (POLY CABONATE), which is known to have strong chemical resistance and mechanical strength, high visible light transmittance, and is not easily deformed. Together,
이때, 상기 도광판(3)의 하부면으로 구성되는 반사돌기(31)는 하부면 전역에 걸쳐 일정간격을 두고 구성되는 것으로,At this time, the reflective projection 31 is composed of a lower surface of the light guide plate 3 is to be configured with a predetermined interval over the entire lower surface,
각 반사돌기(31)는 사출에 의한 이중부식처리에 의해 도 2에 확대도시된 바와같이 외부면(311)이 스크래칭 처리되는 것이다.Each of the reflection protrusions 31 is a scratch treatment of the outer surface 311 as shown in an enlarged view in FIG. 2 by a double corrosion treatment by injection.
한편, 상기 반사판(4)은 도 1에 도시된 바와같이 사각판상체를 취하는 본체의 테둘이 내측이 돌출되어 그 내부로 사각형체의 고정홈(41)이 형성되고, 본체 테두리로는 원형통공(421)을 갖는 결합구(42)가 적어도 복수개로서 본체와 일체로 형성되므로서 구성되는 것으로,On the other hand, the reflector plate 4 as shown in Figure 1, the edge of the main body taking the rectangular plate-like body is protruded to form a fixing groove 41 of a rectangular body therein, a circular through hole ( At least a coupler 42 having 421 is configured to be integrally formed with the main body,
이와같이 구성되는 반사판(4)의 고정홈(41)은 적어도 상기 인쇄회로기판(2)과 도광판(3)이 내부로 수용될 수 있도록 홈의 깊이를 설정함이 바람직하고, 고정홈(41)의 각 모서리로는 상기 인쇄회로기판(2)의 고정수단으로서 걸림돌기(411)를 형성시킴이 바람직하며, 상기 고정홈(41)의 상부면으로는 사각 개방공(412)을 구성되는 것이며, 이러한 개방공(412)은 도광판(3)의 수용고정시 도광판(3)의 단턱(33)이 걸림되도록 그 칫수를 설정함이 바람직하다.The fixing groove 41 of the reflecting plate 4 is configured to set the depth of the groove so that at least the printed circuit board 2 and the light guide plate 3 can be accommodated therein. Each corner is preferably to form a locking projection 411 as a fixing means of the printed circuit board 2, the upper surface of the fixing groove 41 is to constitute a square opening hole 412, such The opening 412 is preferably set to the dimensions so that the step 33 of the light guide plate 3 is caught when the fixing of the light guide plate (3).
또한, 상기 결합구(42)의 원형통공(421)은 본 발명에 따른 백라이트(1)의 설치시, 상기 원형통공(421)을 통해 몰딩접합 또는 기타 고정수단의 결합이 이루어지게 된다.In addition, the circular through hole 421 of the coupler 42 is coupled to the molding joint or other fixing means through the circular through hole 421 at the time of installation of the backlight 1 according to the present invention.
이에, 상기와 같은 구성을 갖는 본 발명에 따른 백라이트(1)의 결합상태와 이에따른 각 구성요소간의 작용상태에 대하여 살펴보면;Thus, look at the coupling state of the backlight 1 according to the present invention having the configuration as described above and the operating state between the respective components;
이는 도 2에 도시된 바와같이 우선 상기 인쇄회로기판(2)의 저면 임의의 지점에 외부연결선을 결선시킨 상태에서 상부면으로 상기 도광판(3)을 적층시키되, 인쇄회로기판(2)으로 배열형성되는 각 엘.이.디(21,21')가 도광판(3)의 수용홈 내측으로 수용되도록한 후,As shown in FIG. 2, first, the light guide plate 3 is laminated on the upper surface of the printed circuit board 2 while the external connection line is connected to an arbitrary point on the bottom surface of the printed circuit board 2, and the arrangement is formed on the printed circuit board 2. After each L. D. 21, 21 'is to be received inside the receiving groove of the light guide plate 3,
이와같이 도광판(3)이 상부면으로 적층구성된 인쇄회로기판(2)을 상기 반사판(4)의 고정홈(41)으로 끼움결합시키므로서 그 조립이 완성된다.The assembly is completed by fitting the printed circuit board 2 having the light guide plate 3 laminated on the upper surface into the fixing groove 41 of the reflecting plate 4.
이때, 상기와 같이 고정홈(41)으로 끼움결합되는 도광판(3)은 테두리로 구성된 단턱(33)이 개방공(412)의 테두리에 걸림되어 도 2에 도시된 바와같이 개방공(412)을 통해 후술하는 액정패드로의 조사면(H)을 형성하게 되는 것이다.At this time, the light guide plate 3 is fitted into the fixing groove 41 as described above, the stepped 33 formed of the edge is caught by the edge of the opening hole 412 to open the opening hole 412 as shown in FIG. Through the irradiation surface (H) to the liquid crystal pad to be described later.
또한, 상기 인쇄회로기판(2)은 고정홈(41)으로의 끼움결합시, 고정홈(41)의각 모서리로 구성된 걸림돌기(411)에 걸림되어 고정홈(41)내에서의 이탈이 방지되는 것이다.In addition, when the printed circuit board 2 is fitted into the fixing groove 41, the printed circuit board 2 is caught by the locking protrusion 411 formed at each corner of the fixing groove 41, thereby preventing separation in the fixing groove 41. will be.
따라서, 상기와 같이 조립이 완성된 본 발명에 따른 싸이드라이트 방식이 적용된 엘.이.디 백라이트(1)는 이동전화와 OA기기 및 오디오 등에 부착되는 정보전달수단으로서의 액정표시장치에 있어, 사용자에게 정확한 정보전달이 이루어지도록 액정패널의 뒷면으로 설치되어, 액정패널의 뒷면을 조사하는 것인데,Accordingly, the LED backlight according to the present invention, which has been assembled as described above, is applied to a liquid crystal display device as an information transfer means attached to a mobile phone, an OA device, or an audio device. It is installed on the back side of the liquid crystal panel to ensure accurate information transfer.
이는 우선 외부연결선(L)을 통한 통전으로 인쇄회로기판(2)상의 각 엘.이.디(21,21')를 발광시키면, 양측부에서 발하는 각 엘.이.디(21,21')의 빛은 투명체인 도광판(3)의 반사돌기(31)를 관통하게 되며,This means that each L.D. 21, 21 'on the printed circuit board 2 emits light by energizing through an external connection line L. Then, each L.D. 21, 21' emitted from both sides is emitted. The light of the light penetrates the reflection protrusion 31 of the light guide plate 3, which is a transparent body.
이때, 일측부 엘.이.디(21)로부터 발하는 빛은 도 3에 도시된 바와같이 내부면(311)이 스크레칭 처리된 반사돌기(31)의 일측면을 통과한 후, 타측면에서 굴절되어 조사면(H)으로 조사되는 것이며, 타측부 엘.이.디(21')로부터 발하는 빛또한 상기와 같이 반사돌기(31)의 일측면을 통과한 후 타측면에서 굴절되는 것이다.At this time, the light emitted from one side L. D. 21 passes through one side of the reflecting projection 31, the inner surface 311 is scratched, as shown in Figure 3, the other side It is refracted to be irradiated to the irradiation surface (H), and the light emitted from the other side L. E. D (21 ') is also refracted at the other side after passing through one side of the reflecting projection 31 as described above.
또한, 상기 반사판(4)은 광원인 엘.이.디(21,21')를 감싸는 형태로서 수용하게 되므로 엘.이.디(21,21')로부터 발하는 빛이 외부로 방출되는 것을 방지하게 된다.In addition, the reflector 4 is accommodated in a form of enclosing the light source L. D. 21, 21 ′, so that the light emitted from the L. D. 21, 21 ′ is prevented from being emitted to the outside. do.
따라서, 반사돌기(31)는 스크레칭 처리된 내부면(311)에 의해 양측부에서 발하는 빛을 90 °- 180 °의 굴절각도로서 굴절시켜 난반사를 행하게 되며 이와같이 난반사된 빛은 도 4에 도시된 바와같은 조사면(H)을 통해 균일하게 액정패널을 조사하게 되는 것이다.Accordingly, the reflection protrusion 31 refracts the light emitted from both sides by the scratched inner surface 311 at a refraction angle of 90 ° -180 °, thereby performing diffuse reflection. The diffusely reflected light is illustrated in FIG. 4. The liquid crystal panel is uniformly irradiated through the irradiation surface H as shown.
즉, 광원인 엘.이.디(21,21')는 측광방식으로 위치시키되, 도광판(3)의 하부면으로 구성되는 반사돌기(31)에 의해 광원으로부터 발하는 빛을 다중 반사시켜, 직하방식과 같은 면 광원을 액정패널로 조사할 수 있는 것이다.That is, the L.D. 21, 21 ', which is a light source, is positioned in a photometric method, and reflects light emitted from the light source by a reflection protrusion 31 configured as a lower surface of the light guide plate 3, thereby directly directing the method. Surface light source such as can be irradiated with the liquid crystal panel.
이때, 엘.이.디(21,21')의 상부면으로 구성되는 반사면(22)은 전술한 바와같이 난반사되는 광원의 빛을 균일화하여 조사면(H)으로 반사하는 것으로, 이는 종래 백라이트로 적용되는 확산판의 기능을 수행하게 된다.At this time, the reflective surface 22 composed of the upper surfaces of the L.D. 21, 21 'is to uniformly reflect the light of the diffusely reflected light source to the irradiation surface (H) as described above, which is a conventional backlight As the diffusion plate is applied to perform the function.
더욱이, 본 발명에 따른 백라이트(1)의 광원으로 엘.이.디(21,21')를 적용하므로서 엘.이.디(21,21')자체가 갖는 장점인 적은 소비전력소요와 장시간의 수명 등의 이점이 있는 것이다.Furthermore, by applying L.D. 21, 21 'as a light source of the backlight 1 according to the present invention, the L.D. 21, 21' itself has the advantages of low power consumption and a long time. There is an advantage such as a lifetime.
이상과 같이, 본 발명에 따른 싸이드 라이트방식이 적용된 엘.이.디 백라이트는 한면이 2중부식처리된 도광판에 의해 측광(SIDE LIGHT)방식으로 위치되는 광원으로서의 엘.이.디로부터 발하는 빛을 다중반사(난반사)하여 열전달을 최소화한 상태에서 균일한 고휘도의 면 광원을 획득할 수 있으므로서, 직하방식의 문제점인 액정패널의 변형이 방지되며, 이에따라 제품신뢰도 및 내구성을 향상시킨 것으로, 생산자 및 사용자에게 매우 유익한 고안이 것이다.As described above, the L.D. back light to which the side light method according to the present invention is applied emits light emitted from L.D. as a light source positioned on a side by a double-corroded light guide plate. It is possible to obtain a uniform high brightness surface light source while minimizing heat transfer by multi-reflection (reflective reflection), thereby preventing the deformation of the liquid crystal panel, which is a problem of the direct method, thereby improving product reliability and durability. This is a very beneficial design for the user.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990008613A KR100300550B1 (en) | 1999-03-15 | 1999-03-15 | Led backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990008613A KR100300550B1 (en) | 1999-03-15 | 1999-03-15 | Led backlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000060377A KR20000060377A (en) | 2000-10-16 |
| KR100300550B1 true KR100300550B1 (en) | 2001-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990008613A KR100300550B1 (en) | 1999-03-15 | 1999-03-15 | Led backlight |
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| KR (1) | KR100300550B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100841617B1 (en) * | 2001-12-31 | 2008-06-27 | 엘지디스플레이 주식회사 | Reflector structure of liquid crystal display and fabricating method thereof |
| KR101382283B1 (en) * | 2012-03-05 | 2014-04-08 | 기아자동차(주) | Transmission indicator for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234821A (en) * | 1988-03-16 | 1989-09-20 | Hitachi Ltd | Liquid crystal display device |
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1999
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234821A (en) * | 1988-03-16 | 1989-09-20 | Hitachi Ltd | Liquid crystal display device |
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