KR100350850B1 - S-type crossed pattern in a light guide pipe of LCD giving high brightness and large viewing angle - Google Patents

S-type crossed pattern in a light guide pipe of LCD giving high brightness and large viewing angle Download PDF

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Publication number
KR100350850B1
KR100350850B1 KR1019990048468A KR19990048468A KR100350850B1 KR 100350850 B1 KR100350850 B1 KR 100350850B1 KR 1019990048468 A KR1019990048468 A KR 1019990048468A KR 19990048468 A KR19990048468 A KR 19990048468A KR 100350850 B1 KR100350850 B1 KR 100350850B1
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KR
South Korea
Prior art keywords
light guide
lcd
guide plate
viewing angle
high brightness
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Application number
KR1019990048468A
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Korean (ko)
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KR20000006795A (en
Inventor
심충건
정규원
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최인식
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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
    • G02B6/0035—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
    • G02B6/0038—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
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Planar Illumination Modules (AREA)

Abstract

본 발명은 LCD용 백라이트의 구조물 중에서 고휘도 및 광시야각을 얻는 도광판의 S자형 패턴에 관한 것이다.The present invention relates to an S-shaped pattern of a light guide plate that obtains high brightness and wide viewing angle among structures of a backlight for LCD.

본 발명에서 측면의 램프광원으로부터 입사된 빛을 전면으로 반사시켜주는 역할을 하는 도광판의 상면에 V자형 형상의 홈을 S자 곡선으로 격자시킴으로써 램프광원으로부터 주사되어 나오는 다양한 경로의 광선을 효과적으로 집광시키고 분산해 주어서 고휘도 및 광시야각을 가진 도광판을 얻는 것이다.In the present invention, by grating a V-shaped groove on the upper surface of the light guide plate that serves to reflect the light incident from the lamp light source of the side to the front of the S-shaped curve to effectively collect the light beams of various paths emitted from the lamp light source By dispersing, a light guide plate having high brightness and wide viewing angle is obtained.

Description

고휘도 및 광시야각을 가진 ＬＣＤ용 도광판{S-type crossed pattern in a light guide pipe of LCD giving high brightness and large viewing angle}Light guide plate for LCD with high brightness and wide viewing angle {S-type crossed pattern in a light guide pipe of LCD giving high brightness and large viewing angle}

LCD는 브라운관(CRT)과 같이 평판 디스플레이 장치 중의 하나이다. LCD에서 도광판의 역할은 측면에 부착된 형광램프로부터 주사된 광선을 집광하고 상면으로 분산시켜 액정환경을 균일한 밝기로 만들어 주는 역할을 한다. 따라서, 도광판은 재질이 투명한 광학용 수지류가 많이 사용되고 일정한 광원에 대하여 보다 밝고 균일한 광도의 화면을 만들기 위하여 도광판의 상면 또는 하면에는 입사된 빛을 효과적으로 집광하고 분산시키는 여러 가지 모양의 패턴을 인쇄하거나 새기게 된다. 패턴은 사각형 모양의 격자나 원형 모양의 배열이 일반적이고, 특별한 모양으로는 타원 반구형 등이 알려져 있다.LCDs are one of the flat panel display devices, such as CRTs. The role of the light guide plate in the LCD is to collect the light beams from the fluorescent lamps attached to the side and to distribute the light to the upper surface to make the liquid crystal environment with uniform brightness. Therefore, the light guide plate is widely used for optical resins having transparent materials and prints patterns of various shapes effectively condensing and dispersing incident light on the upper or lower surface of the light guide plate in order to create a brighter and more uniform screen for a constant light source. Or carved. The pattern is generally a rectangular lattice or an array of circular shapes, and an elliptic hemispherical shape is known as a special shape.

램프광원으로부터 주사되는 광선은 복잡하고 다양한 경로를 통하여 백라이트의 수직상면에 나오는데, 이 광선을 효과적으로 집광하고 분산시키기 위하여 백라이트의 일 구성요소인 도광판의 상면 또는 하면에 다수개의 V형상의 홈으로 된 S자 곡선형 격자 무늬 패턴을 형성하여 광원으로부터 주사된 광선이 골고루 분산되도록 함으로써 고휘도 균일성과 광시야각의 가능하게 하는 백라이트를 얻고자 한다.Light rays emitted from the lamp light source come through the complicated and various paths on the vertical top surface of the backlight. In order to effectively collect and disperse the light rays, S having a plurality of V-shaped grooves on the upper or lower surface of the light guide plate, which is a component of the backlight, is used. It is intended to obtain a backlight that enables high brightness uniformity and wide viewing angle by forming a curved grid pattern so that the light beams emitted from the light source are evenly distributed.

도 1은 도광판이 부착된 일반적인 LCD 백라이트 구조물에 대한 사시도1 is a perspective view of a typical LCD backlight structure having a light guide plate attached thereto

도 2는 도 1의 도광판에 대한 평면도FIG. 2 is a plan view of the light guide plate of FIG. 1. FIG.

도 3은 도 1의 도광판에 대한 측면도3 is a side view of the light guide plate of FIG. 1;

도 4는 도 3의 측면도에 나타난 A 지역 부분 상세도4 is a partial detailed view of the area A shown in the side view of FIG.

도 1 및 도4의 주요 부분에 대한 부호 설명Explanation of Signs of Main Parts of FIGS. 1 and 4

1 : 반사판(reflective sheet)1: Reflective sheet

2 : 도광판(light guide plate)2 light guide plate

3 : 램프(Lamp) 광원3: Lamp light source

4 : 램프 반사판(reflector)4: lamp reflector

5 : 확산시트(difuser sheet)5: diffuser sheet

6, 7 : 프리즘시트(prism sheet)6, 7: prism sheet

8 : 시야각(viewing angle)8: viewing angle

9 : 사람의 눈9: human eyes

10 : 광선10: rays

상기와 같은 목적을 달성하기 위한 본 발명은, 광원으로부터 주사된 빛이 백라이트 내에 고르게 분포되도록 도광판의 상면에 V자형 단면 형상의 홈으로 된 S자형 격자무늬 패턴이 교차하여 형성되어 있는 고휘도 및 광시야각을 가진 LCD용 도관판을 제공한다.즉, 본 발명에서는 램프광원으로부터 주사된 광선이 복잡하고 다양한 경로를 통하여 도광판의 상면에 비추는데, 이 광선을 효과적으로 집광시켜 고휘도의 LCD용 백라이트를 얻기 위해 도광판의 상면에 다수개의 V자형의 홈을 새기고, 이 다수개의 V자형 홈을 S자 곡선의 격자무늬 패턴으로 새겨 집광된 빛을 LCD용 백라이트내에 다양한 각도로 분산시켜 시야각을 넓게 하는 광시야각의 LCD용 백라이트를 얻을 수 있다.In order to achieve the above object, the present invention provides a high brightness and a wide viewing angle in which an S-shaped lattice pattern having a V-shaped cross section is formed on the upper surface of the light guide plate so that the light scanned from the light source is evenly distributed in the backlight. In other words, in the present invention, a light beam scanned from a lamp light source is reflected on the upper surface of the light guide plate through a complicated and diverse path, and the light guide plate is effectively condensed to obtain a high brightness LCD backlight. A large V-shaped groove is engraved on the upper surface of the LCD, and this V-shaped groove is engraved in a S-curve lattice pattern to spread the collected light at various angles in the LCD backlight to widen the viewing angle. Backlight can be obtained.

본 발명은 LCD용 백라이트의 핵심 부품인 도광판에 다수개의 V자형 홈을 S자 곡선의 격자무늬 패턴을 제시하고 있다.본 발명에서의 V자형의 홈은 램프 광원으로부터 주사된 빛을 효과적으로 집광하여 LCD용 백라이트 조명을 밝게 한다. 즉 고휘도의 도광판을 얻을 수 있으며, S자 곡선의 격자무늬는 상기 집관된 빛을 LCD용 백라이트내에 다양한 각도로 분산시켜주는 역할을 하여 사람의 눈이 LCD 평판 디스플레이의 측면에서 접근할 경우와 수직으로 접근할 때와 큰 차이가 없이 선명한 화면을 제공한다. 즉, 광시야각을 갖는 도광판을 얻을 수 있다.The present invention proposes an S-curve lattice pattern of a plurality of V-shaped grooves in a light guide plate, which is a key component of an LCD backlight. The V-shaped grooves of the present invention effectively condense the light scanned from a lamp light source and provide an LCD. Brightens the backlight. That is, a high brightness light guide plate can be obtained, and an S-curve lattice pattern disperses the collected light at various angles within the backlight for the LCD, so that the human eye approaches the LCD flat panel display vertically. It gives you a clear picture without the difference. That is, a light guide plate having a wide viewing angle can be obtained.

Claims (2)

상면에 V형 단면 형상의 홈을 다수개 가지는 LCD용 모니터 백라이트의 도광판에 있어서,In the light guide plate of the LCD monitor backlight having a plurality of V-shaped grooves on the upper surface, 광원으로부터 주사된 빛이 백라이트 내에 고루게 분산되도록 상기 도광판의 상면에 V자형 단면 형상의 홈으로 된 S자형 격자무늬 패턴이 교차하여 형성된 것을 특징으로 하는 고휘도 및 광시야각을 가진 LCD용 도광판.A light guide plate for LCD having high brightness and wide viewing angle, wherein an S-shaped lattice pattern having grooves having a V-shaped cross section is formed on the upper surface of the light guide plate so that the light emitted from the light source is uniformly distributed in the backlight. 삭제delete
KR1019990048468A 1999-11-03 1999-11-03 S-type crossed pattern in a light guide pipe of LCD giving high brightness and large viewing angle KR100350850B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101291450B1 (en) * 2011-07-08 2013-07-30 엘지전자 주식회사 Water purifier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020036455A (en) * 2000-11-10 2002-05-16 유성종 Light guide panel in LCD having a pattern for printless
CN113785238A (en) * 2019-04-30 2021-12-10 镭亚股份有限公司 Light source, multi-view backlight, and method with bifurcated emission pattern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05216030A (en) * 1992-02-03 1993-08-27 Copal Co Ltd Back light
JPH0743710A (en) * 1993-07-29 1995-02-14 Toshiba Lighting & Technol Corp Illumination device and liquid crystal display device
JPH09329712A (en) * 1996-06-13 1997-12-22 Canon Inc Illumination device and liquid crystal display device using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05216030A (en) * 1992-02-03 1993-08-27 Copal Co Ltd Back light
JPH0743710A (en) * 1993-07-29 1995-02-14 Toshiba Lighting & Technol Corp Illumination device and liquid crystal display device
JPH09329712A (en) * 1996-06-13 1997-12-22 Canon Inc Illumination device and liquid crystal display device using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101291450B1 (en) * 2011-07-08 2013-07-30 엘지전자 주식회사 Water purifier

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