KR20090081565A - High lightness light guide pannel - Google Patents

High lightness light guide pannel Download PDF

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Publication number
KR20090081565A
KR20090081565A KR1020080007501A KR20080007501A KR20090081565A KR 20090081565 A KR20090081565 A KR 20090081565A KR 1020080007501 A KR1020080007501 A KR 1020080007501A KR 20080007501 A KR20080007501 A KR 20080007501A KR 20090081565 A KR20090081565 A KR 20090081565A
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KR
South Korea
Prior art keywords
light
light guide
guide plate
groove
dot pattern
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KR1020080007501A
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Korean (ko)
Inventor
유영호
Original Assignee
화우테크놀러지 주식회사
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Priority to KR1020080007501A priority Critical patent/KR20090081565A/en
Publication of KR20090081565A publication Critical patent/KR20090081565A/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
    • G02B6/0033—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
    • G02B6/0033—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
    • 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
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Abstract

A high brightness light guide plate is provided to prevent contrast difference and flickering by compositely forming dot patterns and V-groove line patterns. Light refraction grooves are formed and distributed at a back side of a high brightness light guide plate in order to reflect incident lights from a light source(2) to a front direction. The light refraction grooves includes dot patterns(21) and V-groove line patterns which are compositely distributed and formed. As it is far away from an edge of the light source position, the larger the height and the radius of the dot patterns become. As it is far away from the edge of the light source position, the larger the width and the depth of the V-groove patterns become.

Description

고휘도 도광판{HIGH LIGHTNESS LIGHT GUIDE PANNEL}High brightness light guide plate {HIGH LIGHTNESS LIGHT GUIDE PANNEL}

본 발명은 조명기기로 사용되는 도광판에 관한 것으로서, 빛 굴절홈으로서 고휘도 장점을 갖는 돗트패턴과 상대적으로 휘도가 낮은 V홈 라인패턴이 복합적으로 형성됨으로써 돗트패턴의 단점인 심한 명암 차이를 상쇄하고 어른거림 현상을 방지하면서 기존의 돗트패턴 형성 도광판보다도 휘도가 상승되도록 하는 고휘도 도광판에 관한 것이다.The present invention relates to a light guide plate used as a lighting device, and is formed by combining a dot pattern having a high brightness advantage as a light refraction groove and a V groove line pattern having a relatively low brightness to offset the severe contrast difference, which is a disadvantage of the dot pattern, The present invention relates to a high-brightness light guide plate for preventing luminance from being increased in brightness compared to a conventional dot pattern forming light guide plate.

일반적으로 엘시디(LCD) 및 광고용 또는 조명용으로 사용되는 백라이트 유니트(Back Light Unit)에 사용되는 도광판은 일측면 이상에 설치되는 광원에서 발산되는 빛을 전면으로 유도하기 위하여 후면에 소정 패턴의 홈이 빛 굴절홈으로 분포 형성된다.In general, a light guide plate used in LCD and a back light unit used for advertisement or lighting has a predetermined pattern of grooves on the rear side to guide light emitted from a light source installed on at least one side to the front side. It is formed into a deflection groove.

도 1은 종래 기술의 구성을 보이는 백라이트 유니트(100)의 후면도이고, 도 2는 도 1의 A-A선 단면도이다.1 is a rear view of the backlight unit 100 showing the configuration of the prior art, Figure 2 is a cross-sectional view taken along the line A-A of FIG.

도 1 및 도 2를 참고하여 종래기술의 도광판(100)을 살펴보면, 투광가능한 재질로 이루어지고 후면(112)에는 일측면에 배치된 광원(2)으로부터 입사된 빛을 전면(111)으로 균일하게 산란시키기 위한 빛 굴절홈이 수평선 및 수직선 형태의 V홈 라인패턴(123)으로 배열 분포되며, 빛 굴절홈이 형성된 후면에는 반사시트(3)가 부착된다.Looking at the light guide plate 100 of the prior art with reference to FIGS. 1 and 2, the light incident plate 100 is made of a light-transmissive material and has a light incident from the light source 2 disposed on one side of the rear surface 112 uniformly to the front surface 111. The light refraction grooves for scattering are arranged in a V-line line pattern 123 in the form of horizontal lines and vertical lines, and a reflective sheet 3 is attached to the rear surface where the light refraction grooves are formed.

이와 같은 구성의 도광판(100)은 V홈 라인패턴(123)의 간격이 광원(2)과 가까울수록 조사된 빛의 손실량이 적어지게 되므로 멀리 배치하고, 광원으로부터 멀어질수록 빛이 투과되는 과정에서 손실되는 양이 많아지게 되므로 점진적으로 좁게 배열하여 휘도의 균일화를 기한다.The light guide plate 100 having such a configuration is disposed farther away as the distance between the V-groove line pattern 123 and the light source 2 decreases. Since the amount of loss becomes large, it is arranged gradually narrowly, and uniformity of brightness is attained.

그러나 상기 V홈 라인패턴(123)은 V홈이 라인형태로 연이어 형성되는 관계로 깊이를 깊게 형성할 수 없으므로 가장 크게 형성되는 V홈의 깊이도 도광판 두께의 극히 일부분에 한정되는 얕은 깊이로 형성된다.However, since the V-groove line pattern 123 cannot be deeply formed since the V-grooves are continuously formed in a line shape, the depth of the V-groove which is formed the largest is also formed to have a shallow depth limited to a very small portion of the thickness of the light guide plate. .

여기서, 광원(2)이 직진특성을 갖는 엘이디로 되는 경우, 도광판 두께에서 V홈이 형성되지 않은 영역(101)(도 2 참조)으로 입사된 빛은 굴절되지 못하고 광원(2)과 마주하는 맞은편 측면(114)으로 그대로 나가거나 반사테이프(3)에 부딪혀 도광판 안으로 되반사되고, 되반사되는 빛 중에서 엘이디가 배치되어 반사시트를 설치할 수 없는 쪽(113)으로 향하는 많은 량의 빛은 손실되어 버린다.Here, when the light source 2 becomes an LED having a straight characteristic, the light incident on the region 101 (see FIG. 2) where the V groove is not formed in the thickness of the light guide plate is not refracted and faces the light source 2. Out of the side 114 or hit the reflective tape (3) is reflected back into the light guide plate, a large amount of light to the side 113 where the LED is placed and the reflective sheet can not be installed in the reflected light is lost Throw it away.

또한, 되반사되는 빛 중에서 임계각 이상으로 입사되는 빛은 도광판 내부에 갇혀 반사 굴절이 반복되면서 도광판 자체의 불순물에 의하여 투과율이 떨어지는 빛의 손실이 발생되기 때문에 전면(111)으로 발산되는 조명효율이 떨어지는 문제점이 있었다. In addition, the light incident at a critical angle of the reflected light is trapped inside the light guide plate, and the reflection and repetition are repeated, resulting in loss of light having a low transmittance due to impurities in the light guide plate itself. There was a problem.

한편, 종래기술의 다른 예(100a)로서 도 3 및 도 4에 도시된 바와 같이, 빛 굴절홈이 단면상 원추형으로 형성되는 돗트패턴(121)으로 형성되기도 한다.Meanwhile, as another example 100a of the prior art, as shown in FIGS. 3 and 4, the light refraction groove may be formed as a dot pattern 121 formed in a conical shape in cross section.

상기 돗트패턴(121)은 홈이 이어지지 않고 V홈 라인패턴(123)에 비하여 깊이를 현저히 깊게 형성할 수 있어 광원(2)으로부터 입사된 빛 중에서 전면으로 굴절되는 도광판의 두께영역(102)이 확장되므로 V홈 라인패턴에 비하여 휘도가 10% 이상 증대되는 장점이 있다.The dot pattern 121 may be formed to have a significantly deeper depth than the V-groove line pattern 123 without grooves, so that the thickness region 102 of the light guide plate refracted to the front surface among the light incident from the light source 2 is extended. Therefore, the luminance is increased by more than 10% compared to the V-groove line pattern.

그런데 이러한 돗트패턴(121)은 홈이 형성된 곳은 빛이 대단히 밝은 반면에 돗트패턴이 형성되지 않은 잔존부(103)는 검게 나타나는 명암차로 인하여 도광판 전면이 그물눈 모양으로 나타나는 빛의 강약이 심하게 발생되는 문제점이 있었다.However, the dot pattern 121 has a very bright light where the groove is formed, while the remaining portion 103 where the dot pattern is not formed is dark due to the contrast that appears black. There was a problem.

또한, 돗트패턴(121)은 원추형 홈의 깊이로 인하여 사람이 움직일 경우 상기 그물눈 모양이 시각적으로 어른거리는 모양으로 나타나 어지러움을 유발시키는 문제점이 있었다. In addition, the dot pattern 121 has a problem of causing dizziness when the man's eyes move due to the depth of the conical groove so that the mesh is visually flickering.

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

본 발명의 목적은 빛 굴절홈으로서 고휘도 장점을 갖는 돗트패턴과 상대적으로 휘도가 낮은 V홈 라인패턴을 복합적으로 형성함으로써 돗트패턴의 단점인 심한 명암 차이와 이에 따른 어른거림 현상을 방지하면서 기존의 돗트패턴 형성 도광판의 휘도를 상회 구현토록 하는 고휘도 도광판을 제공함에 있다.An object of the present invention is to form a dot pattern having a high brightness advantage as a light refraction groove and a V-groove line pattern having a relatively low brightness, thereby preventing the difference between the contrast and the wandering phenomenon that is a disadvantage of the dot pattern. The present invention provides a high-brightness light guide plate that realizes the luminance of the pattern-forming light guide plate higher than that.

상기한 목적을 달성하는 본 발명에 따른 고휘도 도광판은,High brightness light guide plate according to the present invention for achieving the above object,

일측으로부터 입사되는 광원의 빛을 전면으로 굴절 반사시키기 위하여 후면에 빛 굴절홈이 분포 형성되는 도광판에 있어서,In the light guide plate in which a light refraction groove is distributed on the rear surface to deflect and reflect the light of the light source incident from one side to the front surface,

상기 빛 굴절홈으로서 돗트패턴과 수평선 또는 수직선 중 어느 하나 이상의 형태로 배열되는 V홈 라인패턴이 복합적으로 분포형성됨을 특징으로 한다.As the light refraction groove, a dot pattern and a V-groove line pattern arranged in at least one of a horizontal line or a vertical line may be distributedly formed.

상기 구성을 지닌 본 발명에 따른 고휘도 도광판은 빛 굴절홈으로서 고휘도 장점을 갖는 돗트패턴과 상대적으로 휘도가 낮은 V홈 라인패턴을 복합적으로 형성함으로써 돗트패턴의 단점인 심한 명암 차이를 상쇄하여 어른거림 현상 및 어지러움을 방지하면서 기존의 돗트패턴 형성 도광판보다도 고휘도를 구현하는 뛰어난 효 과가 있다.The high brightness light guide plate according to the present invention having the above-described structure compensates for the severe contrast difference, which is a disadvantage of the dot pattern, by forming a dot pattern having a high brightness advantage as a light refraction groove and a V groove line pattern having a relatively low brightness. And while preventing dizziness, there is an excellent effect of realizing a higher brightness than conventional dot pattern forming light guide plate.

이하, 본 발명의 고휘도 도광판에 대한 실시예를 첨부도면을 참조하여 보다 상세히 설명한다.Hereinafter, an embodiment of a high brightness light guide plate of the present invention will be described in more detail with reference to the accompanying drawings.

도 5는 본 발명에 따른 일 실시예의 후면도, 도 6은 도 5의 C-C선 확대 단면도이다. 도 5 및 도 6에 도시된 바와 같이, 본 발명에 따른 일 실시예의 고휘도 도광판(1)은 일측으로부터 입사되는 광원의 빛을 전면(11)으로 굴절 반사시키기 위하여 후면(12)에 빛 굴절홈(20)이 분포 형성되는 도광판에 있어서, 상기 빛 굴절홈(20)으로서 돗트패턴(21)과 수평선 또는 수직선 중 어느 하나 이상의 형태로 배열되는 V홈 라인패턴(23)이 복합적으로 분포형성되는 것이다..5 is a rear view of an embodiment according to the present invention, and FIG. 6 is an enlarged cross-sectional view taken along line C-C of FIG. As shown in FIGS. 5 and 6, the high brightness LGP 1 according to the exemplary embodiment of the present invention has a light refraction groove in the rear surface 12 to deflect and reflect the light of the light source incident from one side to the front surface 11. In the light guide plate in which 20) is distributed, the dot pattern 21 and the V-groove line pattern 23 arranged in at least one of a horizontal line or a vertical line are complexly formed as the light refraction groove 20. .

다시 말하면 빛 굴절홈(20)이 돗트패턴(21)으로 형성된 위에 다시 V홈 라인패턴(23)이 씨줄 날줄 방향으로 형성되는 것이다.In other words, the V groove line pattern 23 is formed in the direction of the string line again on the light refraction groove 20 formed of the dot pattern 21.

여기서, 상기 돗트패턴(21)은 홈의 단면이 원추형태로 형성되며, 광원(2)이 설치되는 가장자리로부터 멀어짐에 따라 깊이(21h)와 반경이 점차 크게 형성됨이 바람직하다.Here, the dot pattern 21 is preferably formed in a conical cross section, the depth (21h) and the radius is preferably formed gradually away from the edge where the light source (2) is installed.

또한, 상기 V홈 라인패턴(23)은 광원(2)이 위치되는 가장자리로부터 멀어짐에 따라 V홈의 폭(23w)과 깊이(23h)가 점차 크게 형성됨이 바람직하다.In addition, as the V-groove line pattern 23 moves away from the edge where the light source 2 is located, it is preferable that the width 23w and the depth 23h of the V-groove are gradually increased.

도광판의 크기가 작아 광원(2)이 일측에만 설치될 경우에는 돗트패턴(21) 및 V홈 라인패턴(23)은 광원(2)이 설치되는 일측에서부터 광원과 마주하는 타측면(14) 에 이르기까지 홈의 크기가 점진적으로 커지는 형태로 형성되고(도 5, 6 참조), 도 7에 도시된 바와 같이, 광원(2)이 도광판 양측에 마주하여 설치될 경우에는 양측에서부터 길이방향으로 중앙부를 향하여 빛 굴절홈의 크기가 점진적으로 크게 형성된다.When the light guide plate is small and the light source 2 is installed on only one side, the dot pattern 21 and the V-groove line pattern 23 extend from one side where the light source 2 is installed to the other side 14 facing the light source. The grooves are formed to have a gradually larger size (see FIGS. 5 and 6), and as shown in FIG. 7, when the light source 2 is installed opposite to the both sides of the light guide plate, the grooves face the center in the longitudinal direction from both sides. The size of the light refraction groove is gradually increased.

또한, 도광판의 4방 측면에 광원(2)이 설치될 경우에는 도 8에 도시된 바와 사방으로부터 중심부를 향하여 빛 굴절홈(20)의 크기가 점차 커진다.In addition, when the light source 2 is installed on four sides of the light guide plate, the size of the light refraction groove 20 gradually increases from the four directions toward the center as shown in FIG. 8.

도면 중 미설명 부호 '3'은 반사시트이다.In the drawings, reference numeral 3 denotes a reflective sheet.

이와 같은 구성을 지닌 본 발명에 따른 고휘도 도광판(1)의 작용상태를 살펴본다.It looks at the operation state of the high brightness light guide plate 1 according to the present invention having such a configuration.

돗트패턴(21)이 분포 형성된 도광판은 상술한 바와 같이. 원추형 홈의 깊이(21h)를 V홈 라인패턴의 깊이(23h)에 비하여 상대적으로 깊게 형성할 수 있으므로 돗트패턴 원추형 홈의 깊이(21h)에 상응하는 도광판의 두께영역(1a)으로 입사되는 빛이 돗트패턴(21)의 원추형 홈에서 굴절되어 반사시트(3)로 향하고 반사시트(3)에서 도광판 전면(11)으로 반사되는 경로로 산란 조사되므로 V홈 라인패턴(23)이 형성되는 경우에 비하여 휘도가 10% 이상 밝다,The light guide plate on which the dot pattern 21 is distributed is as described above. Since the depth 21h of the conical groove can be formed relatively deeper than the depth 23h of the V-groove line pattern, light incident on the thickness region 1a of the light guide plate corresponding to the depth 21h of the dot pattern conical groove is Since the light is refracted in the conical groove of the dot pattern 21 to be scattered and irradiated to the reflective sheet 3 and reflected from the reflective sheet 3 to the front surface 11 of the light guide plate, the V groove line pattern 23 is formed. Brightness is more than 10% bright,

돗트패턴(21)이 형성되는 도광판은 이러한 장점이 있는 반면에 돗트패턴(21)이 형성된 부분과 그 외의 잔존부분 간 명암차가 커서 도광판의 전면이 그물눈 모양으로 나타나는데, 본 발명은 여기에 더하여 V홈 라인패턴(23)이 수평선 및 수직선으로 형성됨으로써 돗트패턴에 의한 명암차를 상쇄시키는 것이다.The light guide plate on which the dot pattern 21 is formed has such an advantage, while the contrast between the portion on which the dot pattern 21 is formed and the remaining portion is large so that the front surface of the light guide plate appears in a mesh shape. The line pattern 23 is formed by horizontal lines and vertical lines to cancel the contrast difference caused by the dot pattern.

즉, 밝게 나타나는 돗트패턴(21)이 형성된 부분과 검게 나타나는 돗트패턴이 형성되지 않은 잔존부분을 구별하지 않고 분포형성되는 V홈 라인패턴(23)에 의하여 빛이 유도되어 빛의 명암 및 강약이 상쇄되고 도광판의 전면이 전체적으로 뿌옇게 나타난다.That is, the light is induced by the V-groove line pattern 23 which is distributed without distinguishing between the portion where the bright dot pattern 21 is formed and the remaining portion where the dot pattern that is black is not formed. The entire surface of the light guide plate appears cloudy.

이때 휘도 또한 기존의 돗트패턴 타입에 비하여 약 5% 정도 상승한다.In this case, the luminance also increases by about 5% compared to the existing dot pattern type.

이에 따라 돗트패턴(21)만 형성되는 경우에 비하여 휘도가 더 향상될 뿐만 아니라 돗트패턴의 단점인 그물눈 모양으로 나타나는 심한 명암의 차이, 사람이 움직일 때 나타나는 그물눈 어른거림 및 어지러운 현상이 방지되는 것이다.Accordingly, the brightness is not only improved more than the case in which only the dot pattern 21 is formed, but the difference between the intensity and the darkness of the net shape, which is a disadvantage of the dot pattern, and the dizziness and dizziness that appear when a person moves are prevented.

이상과 같이 본 발명은 도광판에 빛 굴절홈으로서 고휘도 장점을 갖는 돗트패턴과 상대적으로 휘도가 낮은 V홈 라인패턴을 복합적으로 형성함으로써 돗트패턴의 단점인 심한 명암의 차이를 상쇄시켜 어른거림 현상 및 어지러움을 방지하면서 기존의 돗트패턴 도광판의 휘도를 상회하는 고휘도를 얻는다.As described above, in the present invention, a dot pattern having high brightness as a light refraction groove and a relatively low V-groove line pattern are formed in the light guide plate to offset the difference between the dark and dark which is a disadvantage of the dot pattern. The high brightness that exceeds the brightness of the existing dot pattern light guide plate is prevented.

이상 본 발명은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 도면에 한정되는 것은 아니다.As described above, the present invention may be variously substituted, modified, and changed without departing from the technical spirit of the present invention by those skilled in the art to which the present invention pertains. no.

도 1은 종래기술의 후면도1 is a rear view of the prior art

도 2는 도 1의 A-A선 확대 단면도2 is an enlarged sectional view taken along the line A-A of FIG.

도 3은 다른 종래기술의 후면도3 is a rear view of another prior art

도 4는 도 3의 B-B선 확대 단면도4 is an enlarged cross-sectional view taken along the line B-B of FIG.

도 5는 본 발명에 따른 일 실시예의 후면도5 is a rear view of one embodiment according to the present invention;

도 6은 도 5의 C-C선 확대 단면도6 is an enlarged cross-sectional view taken along the line C-C of FIG.

도 7은 본 발명에 따른 일 실시예의 후면도7 is a rear view of an embodiment according to the present invention.

도 8은 본 발명에 따른 일 실시예의 후면도8 is a rear view of one embodiment according to the present invention;

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

1: 본 발명의 고휘도 도광판1: High brightness light guide plate of the present invention

11: 전면 12: 후면 20: 빛 굴절홈11: front 12: rear 20: light deflection groove

21: 도트패턴 23: V홈 라인패턴 2: 광원21: dot pattern 23: V-groove line pattern 2: light source

3: 반사시트3: reflective sheet

Claims (3)

일측으로부터 입사되는 광원의 빛을 전면(11)으로 굴절 반사시키기 위하여 후면(12)에 빛 굴절홈(20)이 분포 형성되는 도광판에 있어서,In the light guide plate in which the light refraction groove 20 is distributed in the rear surface 12 in order to refractively reflect the light of the light source incident from one side to the front surface 11, 상기 빛 굴절홈(20)으로서 돗트패턴(21)과 수평선 또는 수직선 중 어느 하나 이상의 형태로 배열되는 V홈 라인패턴(23)이 복합적으로 분포형성됨을 특징으로 하는 고휘도 도광판.A high brightness light guide plate, characterized in that the dot pattern 21 and the V-groove line pattern 23 arranged in at least one of the horizontal line or the vertical line as the light refraction groove 20 is formed in a complex distribution. 청구항 1에 있어서,The method according to claim 1, 상기 돗트패턴(21)은 홈의 단면이 원추형태로 형성되며, 광원(2)이 설치되는 가장자리로부터 멀어짐에 따라 깊이(21h)와 반경이 점차 크게 형성됨을 특징으로 하는 고휘도 도광판.The dot pattern 21 is a high brightness light guide plate, characterized in that the cross section of the groove is formed in a conical shape, the depth (21h) and the radius is gradually increased as the distance from the edge where the light source (2) is installed. 청구항 1에 있어서,The method according to claim 1, 상기 V홈 라인패턴(23)은 광원(2)이 위치되는 가장자리로부터 멀어짐에 따라 V홈의 폭(23w)과 깊이(23h)가 점차 크게 형성됨을 특징으로 하는 고휘도 도광판.The V-groove line pattern 23 is a high brightness light guide plate, characterized in that the width (23w) and the depth (23h) of the V-groove gradually increases as the light source (2) is located from the edge.
KR1020080007501A 2008-01-24 2008-01-24 High lightness light guide pannel KR20090081565A (en)

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