KR20040019140A - Back light unit of lcd module - Google Patents
Back light unit of lcd module Download PDFInfo
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- KR20040019140A KR20040019140A KR1020020049401A KR20020049401A KR20040019140A KR 20040019140 A KR20040019140 A KR 20040019140A KR 1020020049401 A KR1020020049401 A KR 1020020049401A KR 20020049401 A KR20020049401 A KR 20020049401A KR 20040019140 A KR20040019140 A KR 20040019140A
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- South Korea
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- light
- guide plate
- light guide
- lcd module
- backlight unit
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
본 발명은 액정표시소자 장치에 사용되는 백라이트 유닛(back light unit)에 관해 개시한 것이다.The present invention discloses a back light unit used in a liquid crystal display device device.
광원에서 입광된 빛이 도광판 및 역프리즘에 의해 출광되고, 상기 출광된 빛을 일정하게 정리하여 액정표시소자로 투과시키는 엘시디 모듈의 백라이트 유닛에 있어서, 개시된 본 발명의 도광판 및 역프리즘은 입광면에 다수의 굴곡부를 가지되, 굴곡부는 일단이 라운드진 형상을 가진 것을 특징으로 한다.In the backlight unit of an LCD module in which light incident from a light source is emitted by a light guide plate and an inverted prism, the light is uniformly arranged and transmitted to a liquid crystal display device. It has a plurality of bends, characterized in that the bent portion has a rounded shape.
따라서, 본 발명에서는 고가의 광학 시트를 줄이고 대신에 도광판 및 역프리즘의 입사면이 굴곡진 형상을 갖게 하고 상기 굴곡의 일단은 라운드처리함으로서, 도광판에 입광된 빛이 뾰족한 부분에서 집광 반사되는 빛을 제어할 수 있고 결과적으로는 광학 시트 소요 수량을 줄여 제조 단가를 줄일 수 있다.Therefore, in the present invention, by reducing the expensive optical sheet and instead of the light guide plate and the inverted prism incidence surface has a curved shape and rounded one end of the curved light, the light reflected by the light guide plate is reflected and collected at a pointed portion Control, and consequently, manufacturing costs can be reduced by reducing the number of optical sheets required.
Description
본 발명은 엘디시 모듈(LCD module)에 관한 것으로, 보다 상세하게는 액정표시소자 장치에 사용되는 엘시디 모듈의 백라이트 유닛(back light unit)에 관한 것이다.The present invention relates to an LCD module, and more particularly to a backlight unit of an LCD module used in a liquid crystal display device device.
모니터용의 일반적인 액정표시소자 장치는 CRT와는 달리 스스로 빛을 내는 소자가 아니므로 액정 화면의 배면에 화상을 시각적으로 표현하기 위한 광원이 필요하다. 이러한 액정표시소자의 광원으로서는 현재 형광 램프를 사용하는 백라이트 유닛을 사용한다.Unlike a CRT, a general liquid crystal display device for a monitor is not a device that emits light by itself, and thus a light source for visually expressing an image on the back of the liquid crystal screen is required. As a light source of such a liquid crystal display device, a backlight unit using a fluorescent lamp is used.
도 1은 종래 기술에 따른 엘시디 모듈의 백라이트 유닛의 개략도이다.1 is a schematic diagram of a backlight unit of an LCD module according to the prior art.
엘시디 모듈의 백라이트 유닛은, 도 1에 도시된 바와 같이, 광원으로서 경량박형화를 통해 휴대성을 강화하는 측면 발광형 구조의 형광 램프(1)를 사용하며, 상기 형광 램프(1)로 부터 발생된 빛을 도광판(7)을 통해 전달하여 액정 소자의 직하에서 액정 소자면에 투사하게 된다.As shown in FIG. 1, the backlight unit of the LCD module uses, as a light source, a fluorescent lamp 1 having a side-emitting type structure that enhances portability through light weight thinning, and is generated from the fluorescent lamp 1. Light is transmitted through the light guide plate 7 to be projected onto the liquid crystal element surface directly under the liquid crystal element.
이때, 상기 형광 램프(1)에서 발생된 빛을 도광판(7)에 보다 많은 량을 투사하기 위해서는 형광 램프(1) 주위에 램프 반사체(reflector)(3)를 설치하고 도광판(7)의 하단에 프리즘 반사판(5)을 설치하여 빛을 액정소자면으로 반사시키며, 또한, 도광판(7)의 상면에는 집광 시트 및 확산 시트 순으로 광학 시트(미도시)를 배치한다. 상기 광학 시트 상면에는 역프리즘(prism)(9)을 배치한다.At this time, in order to project more light generated from the fluorescent lamp 1 to the light guide plate 7, a lamp reflector 3 is installed around the fluorescent lamp 1 and placed at the bottom of the light guide plate 7. A prism reflector 5 is provided to reflect light onto the liquid crystal element surface, and an optical sheet (not shown) is arranged on the upper surface of the light guide plate 7 in the order of a light collecting sheet and a diffusion sheet. On the upper surface of the optical sheet, a prism 9 is disposed.
상기의 구성 요소 대부분은, 도면에 도시되지 않았지만, 몰드 프레임에 수직 방향으로 적층되어 조립되며 최하부에 금속 재질의 백커버(back cover)가 배치된다.Most of the above components, although not shown in the drawing, are stacked and assembled in a vertical direction to the mold frame, and a metal back cover is disposed at the bottom thereof.
상기 형광 램프(1)에서 입광된 빛은 도광판(7)으로 직접 입사되거나 램프 반사체(3)에 의해 반사되어 입광되는 구조를 가진다. 이때, 입광된 빛은 도광판(7)의 출광면과 반대되는 곳에서 적절한 반사를 얻어 도광판이 갖는 고유의 굴절율을 이용하여 원하는 방향으로 출광되고, 상기 출광된 빛을 일정하게 정리하여 액정표시소자로 투과되도록 한다.The light incident on the fluorescent lamp 1 is directly incident on the light guide plate 7 or is reflected by the lamp reflector 3 to receive light. At this time, the incident light is emitted in a desired direction by obtaining an appropriate reflection on the opposite side of the light exit surface of the light guide plate 7 using the inherent refractive index of the light guide plate, and uniformly arranges the emitted light to the liquid crystal display device. Allow it to penetrate.
또한, 도광판(7) 내에서 출광면의 반대면인 반사면에 일정 간격의 반사를 위한 형상을 인쇄하거나 성형하여 빛의 고유 특성인 산란과 반사를 이용하여 출광면 내에서 일정한 균일성을 갖는 빛을 이용을 도모한다.In addition, the light having a uniform uniformity in the light emitting surface by using scattering and reflection, which are inherent to the light, by printing or molding a shape for reflection at a predetermined interval on the reflective surface that is the opposite surface of the light emitting surface in the light guide plate 7 Promote the use.
한편, 광학 시트의 사용이 많음에 따라 고가가 되고 제작이 어려워지며 시트 자체가 가지는 투과도에 따라 활용가능한 고휘도를 얻을 수 있으나 기술적 한계에 도달해 있는 상태이다.On the other hand, the use of the optical sheet is expensive, the manufacturing is difficult and the high brightness can be obtained according to the transmittance of the sheet itself, but the technical limit is reached.
따라서, 새로운 고휘도 구현의 시도로서 도광판(7)에 역프리즘(8)을 형성하고, 상기 역프리즘의 집광 특성과 도광판에서 빠져나오는 빛을 재집광 수직 상방향의 휘도를 향상시키는 기술이 적용되고 있다.Therefore, as an attempt to implement a new high brightness, a technique of forming the inverted prism 8 in the light guide plate 7 and improving the light condensing characteristics of the inverted prism and the light exiting from the light guide plate to improve the brightness in the vertical direction is applied. .
도 2는 종래 기술에 따른 엘시디 모듈의 백라이트 유닛에서, 역프리즘을 도시한 사시도이다. 또한, 도 3은 도 2의 A 부분확대도이다.2 is a perspective view illustrating an inverse prism in the backlight unit of the LCD module according to the prior art. 3 is an enlarged view of portion A of FIG. 2.
상기 역프리즘(8)은, 도 2에 도시된 바와 같이, 입광면에 다수의 굴곡이 형성된 구조를 가지며, 상기 굴곡은, 도 3에 도시된 바와 같이, 일단이 뾰족한 형상을 가진다.As shown in FIG. 2, the inverted prism 8 has a structure in which a plurality of bends are formed on the light incident surface, and the bend has a pointed shape at one end, as shown in FIG. 3.
도 4는 종래 기술에 따른 엘시디 모듈의 백라이트 유닛에서, 도광판을 도시한 사시도이다. 또한, 도 5은 도 4의 B 부분확대도이다.4 is a perspective view illustrating a light guide plate in a backlight unit of an LCD module according to the related art. 5 is an enlarged view of a portion B of FIG. 4.
상기 도광판(7)은, 도 4에 도시된 바와 같이, 상기 역프리즘(9)과 동일하게 입광면에 다수의 굴곡이 형성된 구조를 가지며, 상기 굴곡은, 도 3에 도시된 바와 같이, 일단이 뾰족한 형상을 가진다.As shown in FIG. 4, the light guide plate 7 has a structure in which a plurality of bends are formed on a light incident surface in the same manner as the inverted prism 9, and the bend has one end as shown in FIG. 3. It has a pointed shape.
따라서, 도광판(7)으로 입사된 광은 도광판 바닥면의 역프리즘에 전반사되며 도광판 내부에서 외부로 출광된다.Therefore, the light incident on the light guide plate 7 is totally reflected on the reverse prism of the bottom surface of the light guide plate and is emitted from the inside of the light guide plate to the outside.
그러나, 종래의 기술에 따른 엘시디 모듈의 백라이트 유닛에서는 상기 형상을 가진 도광판 및 역프리즘을 이용함으로서, 전체적인 휘도 상승을 가져올 수는 있으나, 도광판의 입광면에서의 강한 휘선을 제어하지 못하여 유효 발광영역 내에서 강한 휘선이 띠를 나타내는 문제점이 있었다.However, in the backlight unit of the LCD module according to the related art, although the light guide plate and the inverting prism having the above shape are used, the overall brightness may be increased. There was a problem that the strong bright line in the band indicates.
이에 본 발명은 상기 종래의 문제점을 해결하기 위해 안출된 것으로, 역프리즘 및 도광판의 형상을 변경함으로서, 도광판에서 입광된 빛이 날카로운 모서리에 집광하여 발광하지 않도록 뾰족한 부분을 제거하여 모서리 부분에서 반사되는 빛을 제어할 수 있는 엘시디 모듈의 백라이트 유닛을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by changing the shape of the reverse prism and the light guide plate, the light incident on the light guide plate is reflected at the corner portion by removing the pointed portion so as not to emit light by condensing on the sharp edge It is an object of the present invention to provide a backlight unit of an LCD module that can control light.
도 1은 종래 기술에 따른 엘시디 모듈의 백라이트 유닛의 개략도.1 is a schematic diagram of a backlight unit of an LCD module according to the prior art;
도 2는 종래 기술에 따른 엘시디 모듈의 백라이트 유닛에서, 역프리즘을 도시한 사시도.2 is a perspective view showing an inverting prism in the backlight unit of the LCD module according to the prior art.
도 3은 도 2의 A 부분확대도.FIG. 3 is an enlarged view of portion A of FIG. 2; FIG.
도 4는 종래 기술에 따른 엘시디 모듈의 백라이트 유닛에서, 도광판을 도시한 사시도.4 is a perspective view illustrating a light guide plate in a backlight unit of an LCD module according to the prior art;
도 5은 도 4의 B 부분확대도.FIG. 5 is an enlarged view of a portion B of FIG. 4; FIG.
도 6은 본 발명에 따른 엘시디 모듈의 백라이트 유닛의 개략도.6 is a schematic diagram of a backlight unit of an LCD module according to the present invention;
도 7은 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서, 역프리즘을 도시한 사시도.7 is a perspective view showing an inverse prism in the backlight unit of the LCD module according to the present invention.
도 8은 도 7의 C 부분확대도.FIG. 8 is an enlarged view of portion C of FIG. 7; FIG.
도 9는 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서, 도광판을 도시한 사시도.9 is a perspective view illustrating a light guide plate in a backlight unit of an LCD module according to the present invention;
도 10은 도 9의 D 부분확대도.FIG. 10 is an enlarged view of portion D of FIG. 9; FIG.
상기 목적을 달성하기 위해, 광원에서 입광된 빛이 도광판 및 역프리즘에 의해 출광되고, 상기 출광된 빛을 일정하게 정리하여 액정표시소자로 투과시키는 엘시디 모듈의 백라이트 유닛에 있어서, 개시된 본 발명의 도광판 및 역프리즘은 입광면에 다수의 굴곡부를 가지되, 굴곡부는 일단이 라운드진 형상을 가진 것을 특징으로 한다.In order to achieve the above object, the light guide plate of the LCD module of the present invention is disclosed in the backlight unit of the LCD module that the light received from the light source is emitted by the light guide plate and the inverting prism, and the light is uniformly arranged and transmitted to the LCD And the reverse prism has a plurality of bent portion on the light incident surface, the bent portion is characterized in that one end has a rounded shape.
상기 광원은 배면 광원을 이용한다.The light source uses a back light source.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 6은 본 발명에 따른 엘시디 모듈의 백라이트 유닛의 개략도이다.6 is a schematic diagram of a backlight unit of an LCD module according to the present invention.
본 발명에 따른 엘시디 모듈의 백라이트 유닛에서, 도 6에 도시된 바와 같이, 광원으로는 경량 박형화를 통해 휴대성을 강화하는 측면 발광형 구조의 형광 램프(11)를 사용한다. 상기 형광 램프(11)로 부터 발생된 빛을 도광판(17)을 통해 전달하여 액정 소자의 직하에서 액정 소자면에 투사하게 된다. 상기 도광판(17)은 입사면에 다수의 굴곡부를 가지되, 상기 굴곡부의 일단은 라운드 형상을 가진다.In the backlight unit of the LCD module according to the present invention, as shown in Figure 6, as the light source is used a fluorescent lamp 11 of the side-emitting type structure to enhance portability through light weight thinning. The light generated from the fluorescent lamp 11 is transmitted through the light guide plate 17 to be projected onto the surface of the liquid crystal element directly under the liquid crystal element. The light guide plate 17 has a plurality of curved portions at the incident surface, and one end of the curved portion has a round shape.
이때, 형광 램프(11) 주위에 램프 반사체(13)를 설치하고 도광판(17)의 하단에 프리즘 반사판(5)을 설치함으로서, 상기 형광 램프(11)에서 발생된 빛을 도광판(17)에 보다 많은 량을 투사하여 빛을 액정소자면으로 반사시킨다.At this time, by installing the lamp reflector 13 around the fluorescent lamp 11 and by installing the prism reflector 5 at the lower end of the light guide plate 17, the light generated from the fluorescent lamp 11 is seen on the light guide plate 17. By projecting a large amount of light is reflected to the surface of the liquid crystal element.
또한, 도광판(17)의 상면에는 집광 시트 및 확산 시트 순으로 광학 시트(미도시) 및 역프리즘(prism)(9)을 차례로 배치한다. 상기 역프리즘(19)은, 상기 도광판(17)은 입사면에 다수의 굴곡부를 가지되, 상기 굴곡부의 일단은 라운드 형상을 가진다.In addition, an optical sheet (not shown) and an inverted prism 9 are sequentially arranged on the upper surface of the light guide plate 17 in the order of the light collecting sheet and the diffusion sheet. In the reverse prism 19, the light guide plate 17 has a plurality of bent portions at the incident surface, and one end of the bent portion has a round shape.
도 7은 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서, 역프리즘만을 도시한 사시도이다. 또한, 도 8은 도 7의 C 부분확대도이다.7 is a perspective view illustrating only an inverted prism in the backlight unit of the LCD module according to the present invention. 8 is a partially enlarged view of portion C of FIG. 7.
본 발명에 따른 엘시디 모듈의 백라이트 유닛에 있어서 역프리즘(19)은, 도 7 및 도 8에 도시된 바와 같이, 입사면 표면에 다수의 산과 골을 포함한 굴곡부가 형성되며, 상기 굴곡부에서 산에 해당되는 부분의 일단은 뾰족하지 않고 라운드진 형상을 가진다.In the backlight unit of the LCD module according to the present invention, as shown in FIGS. 7 and 8, the inverted prism 19 has a bent portion including a plurality of hills and valleys formed on the incidence surface, and corresponds to a mountain at the bent portion. One end of the portion is not pointed and has a rounded shape.
도 9는 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서, 도광판을 도시한 사시도이다. 또한, 도 10은 도 9의 D 부분확대도이다.9 is a perspective view illustrating a light guide plate in a backlight unit of an LCD module according to the present invention. 10 is an enlarged view of portion D of FIG. 9.
본 발명에 따른 엘시디 모듈의 백라이트 유닛에 있어서 도광판(17)은, 도 8 에 도시된 바와 같이, 입사면 표면에 다수의 산과 골을 포함한 굴곡부가 형성되며, 상기 굴곡부에서 산에 해당되는 부분의 일단은, 도 9에 도시된 바와 같이, 뾰족하지 않고 라운드진 형상을 가진다.In the backlight unit of the LCD module according to the present invention, as illustrated in FIG. 8, the light guide plate 17 has a bent portion including a plurality of hills and valleys formed on the incidence surface, and one end of a portion corresponding to the mountain in the bent portion. 9, as shown in FIG. 9, it is not pointed and has a rounded shape.
도광판에 역프리즘이 성형된 구조를 가진 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서는, 도광판(17) 및 역프리즘(19)의 입사면 형상을 라운드지도록 형성함으로서, 도광판(17) 입광 부위의 역프리즘에 의해 발생되는 휘선을 제어한다.In the backlight unit of the LCD module according to the present invention having a structure in which a reverse prism is formed on the light guide plate, the inverted prism of the light-receiving portion of the light guide plate 17 is formed by rounding the incidence plane shapes of the light guide plate 17 and the reverse prism 19. Control the bright lines generated by
본 발명에 따르면, 도광판 입광 부위의 역프리즘에 의해 발생되는 휘선을 제어하고자 역프리즘(9)의 입사면이 굴곡진 구조를 갖되, 상기 굴곡의 일단이 라운드 처리됨으로서, 뾰족한 역프리즘 일단과 골에서의 집광하여 강하게 반사하는 강한 휘점들의 일정한 형태의 연속된 집합선을 제거하여 유효 발광 영역 내에서 발생하는 강한 휘선을 제어한다.According to the present invention, the incidence surface of the reverse prism 9 has a curved structure in order to control the bright line generated by the reverse prism of the light guide plate incident part, and one end of the curved line is rounded, so that at one end of the sharp reverse prism and the valley The strong bright lines generated in the effective light emitting region are controlled by removing a continuous collection line of a certain type of strong bright spots that are condensed and strongly reflected.
이상에서와 같이, 본 발명에 따른 엘시디 모듈의 백라이트 유닛에서는, 고가의 광학 시트를 줄이고 대신에 도광판 및 역프리즘의 입사면이 굴곡진 형상을 갖게 하고 상기 굴곡의 일단은 라운드처리함으로서, 광학 시트에 소요되는 비용을 줄일 수 있으며, 도광판에서 입광된 빛이 뾰족한 부분에서 집광 반사되는 빛을 제어할 수 있다. 즉, 본 발명은 도광판의 입광면에서의 강한 휘선을 제어가능하다.As described above, in the backlight unit of the LCD module according to the present invention, by reducing the expensive optical sheet instead of having the light guide plate and the incidence surface of the inverted prism has a curved shape and one end of the curved round, The cost can be reduced, and the light reflected from the light guide plate can control the light reflected and collected at the pointed portion. That is, the present invention can control the strong bright line on the light incident surface of the light guide plate.
기타, 본 발명은 그 요지를 일탈하지 않는 범위에서 다양하게 변경하여 실시할 수 있다.In addition, this invention can be implemented in various changes within the range which does not deviate from the summary.
Claims (2)
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|---|---|---|---|
| KR1020020049401A KR20040019140A (en) | 2002-08-21 | 2002-08-21 | Back light unit of lcd module |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020020049401A KR20040019140A (en) | 2002-08-21 | 2002-08-21 | Back light unit of lcd module |
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| KR1020020049401A Ceased KR20040019140A (en) | 2002-08-21 | 2002-08-21 | Back light unit of lcd module |
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Cited By (6)
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| KR100621808B1 (en) * | 2006-05-30 | 2006-09-11 | 케이엔디티앤아이 주식회사 | Radiographic photoobserver with backlight structure for providing surface light source |
| KR100673990B1 (en) * | 2005-05-24 | 2007-01-25 | 엘지전자 주식회사 | Backlight Unit, Liquid Crystal Display and Inverted Prism Sheet |
| KR100735294B1 (en) * | 2005-10-27 | 2007-07-03 | 레디언트 옵토-일렉트로닉스 코포레이션 | Backlight module |
| KR100835948B1 (en) * | 2006-10-03 | 2008-06-09 | 우 옵트로닉스 코포레이션 | Liquid crystal display and backlight module thereof |
| KR101158893B1 (en) * | 2005-06-09 | 2012-06-25 | 삼성전자주식회사 | Optical member, backlight assembly having the same and liquid crystal display device having the same |
| CN109716352A (en) * | 2018-12-17 | 2019-05-03 | 深圳市汇顶科技股份有限公司 | Liquid crystal display fingerprint mould group shields lower fingerprint recognition system and electronic equipment |
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| KR100735294B1 (en) * | 2005-10-27 | 2007-07-03 | 레디언트 옵토-일렉트로닉스 코포레이션 | Backlight module |
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| CN109716352A (en) * | 2018-12-17 | 2019-05-03 | 深圳市汇顶科技股份有限公司 | Liquid crystal display fingerprint mould group shields lower fingerprint recognition system and electronic equipment |
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