KR960042148A - Backlight device for liquid crystal display which raises uniformity of brightness - Google Patents

Backlight device for liquid crystal display which raises uniformity of brightness Download PDF

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Publication number
KR960042148A
KR960042148A KR1019950013456A KR19950013456A KR960042148A KR 960042148 A KR960042148 A KR 960042148A KR 1019950013456 A KR1019950013456 A KR 1019950013456A KR 19950013456 A KR19950013456 A KR 19950013456A KR 960042148 A KR960042148 A KR 960042148A
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KR
South Korea
Prior art keywords
light
backlight device
light source
guide plate
liquid crystal
Prior art date
Application number
KR1019950013456A
Other languages
Korean (ko)
Other versions
KR0169383B1 (en
Inventor
박세진
남석현
민금홍
이상유
Original Assignee
김광호
삼성전자 주식회사
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Priority to KR1019950013456A priority Critical patent/KR0169383B1/en
Publication of KR960042148A publication Critical patent/KR960042148A/en
Application granted granted Critical
Publication of KR0169383B1 publication Critical patent/KR0169383B1/en

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Classifications

    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • 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

Abstract

본 발명은 액정 디스플레이용 백라이트 장치에 관한 것으로서, 광원이 있고, 광원의 한 쪽에 확산판이 설치되어 있으며, 확산판 밑에 확산판과 평행하게 설치되어 있는 도광판과 광원과 도광판을 에워싸는 반사막을 포함하는 액정 디스플레이용 백라이트 장치에서, 상기 광원과 상기 도광판 사이에 프리즘관이나 옵티칼 번들쉬트를 삽입함으로써, 광원으로부터 방사형으로 진행하는 빛이 프리즘판이나 옵티칼 번들 쉬트를 통과하면서 평행하게 진행하도록 하여, 도광판의 전역에 동량의 빛이 도달하고 따라서, 백라이트의 휘도의 균일성을 높여주는 액정 디스플레이용 백라이트 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight device for a liquid crystal display, comprising a light source, a light diffusion plate disposed on one side of the light source, a light guide plate disposed parallel to the diffusion plate under the diffusion plate, and a light source and a reflective film surrounding the light guide plate. In the backlight device for a light, by inserting a prism tube or optical bundle sheet between the light source and the light guide plate, the light traveling radially from the light source passes in parallel while passing through the prism plate or optical bundle sheet, the same amount throughout the light guide plate This invention relates to a backlight device for a liquid crystal display that the light reaches and thus improves the uniformity of the brightness of the backlight.

Description

휘도의 균일성을 높이는 액정 디스플레이용 백라이트 장치Backlight device for liquid crystal display which raises uniformity of brightness

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명의 옵티칼 번들 쉬트를 포함하는 액정 디스플레이용 백라이트의 분해 사시도이고, 제4도는 본 발명의 옵티칼 번들 쉬트를 포함하는 액정 디스플레이용 백라이트의 단면도이고, 제5도는 본 발명의 옵티칼 번들 쉬트의 확대 사시도이다.3 is an exploded perspective view of a backlight for a liquid crystal display including the optical bundle sheet of the present invention, and FIG. 4 is a cross-sectional view of a backlight for a liquid crystal display including the optical bundle sheet of the present invention, and FIG. 5 is an optical bundle sheet of the present invention. An enlarged perspective view of the.

Claims (11)

빛을 내는 광원, 상기 광원의 한 쪽에 설치되어 상기 광원으로부터 나오는 빛이 평행하게 진행하도록 옵티칼 번들 쉬트, 상기 옵티칼 번들 쉬트에 대하여 광원과 반대쪽 면으로 설치되어 있으며 상기 옵티칼 번들 쉬트로부터의 빛을 유도하는 도광판을 포함하는 액정 디스플레이용 백라이트 장치.A light source that emits light, an optical bundle sheet installed on one side of the light source so that light from the light source proceeds in parallel, and installed on a surface opposite to the light source with respect to the optical bundle sheet and inducing light from the optical bundle sheet A backlight device for a liquid crystal display comprising a light guide plate. 제1항에 있어서, 상기 옵티칼 번들 쉬트는 다수의 광섬유를 포함하는 액정 디스플레이용 백라이트 장치.The backlight device of claim 1, wherein the optical bundle sheet comprises a plurality of optical fibers. 제2항에 있어서, 상기 옵티칼 번들 쉬트의 두께는 0.2∼1㎜인 액정 디스플레이용 백라이트 장치.The backlight device of claim 2, wherein the optical bundle sheet has a thickness of 0.2 to 1 mm. 제1항에 있어서, 상기한 광원과 상기 도광판을 에워싸서, 외부로 방출되는 빛을 차단하는 반사막을 더 포함하는 액정 디스플레이용 백라이트 장치.The backlight device of claim 1, further comprising a reflective film surrounding the light source and the light guide plate to block light emitted to the outside. 제1항에 있어서, 상기한 도광판에 평행하게 설치되어 있어, 상기 도광판으로부터 유도된 빛을 확산하는 확산판을 더 포함하는 액정 디스플레이용 백라이트 장치.The backlight device for a liquid crystal display according to claim 1, further comprising a diffusion plate disposed in parallel with the light guide plate to diffuse light induced from the light guide plate. 제5항에 있어서, 상기 확산판에 평행하게 설치되어, 상기 확산판으로부터 방출되는 빛의 이용효율을 높여주는 프리즘관을 더 포함하는 액정 디스플레이용 백라이트 장치.6. The backlight device of claim 5, further comprising a prism tube disposed in parallel with the diffusion plate to increase utilization efficiency of light emitted from the diffusion plate. 빛을 내는 광원, 광원의 한 쪽에 설치되어 광원으로부터 나오는 빛이 평행하게 진행하도록 하는 프리즘관, 프리즘관에 대하여 광원과 반대쪽 면으로 설치되어 있는 도광판을 포함하는 액정 디스플레이용 백라이트 장치.A backlight device for a liquid crystal display, comprising: a light source for emitting light, a prism tube installed at one side of the light source so that light from the light source proceeds in parallel, and a light guide plate provided on a surface opposite to the light source with respect to the prism tube. 제7항에 있어서, 상기한 프리즘관의 두께는 0.2∼1㎜인 액정 디스플레이용 백라이트 장치.The backlight device for liquid crystal display according to claim 7, wherein the prism tube has a thickness of 0.2 to 1 mm. 제7항에 있어서, 상기한 광원과 상기 도광판을 에워싸서, 외부로 방출되는 빛을 차단하는 반사막을 더 포함하는 액정 디스플레이용 백라이트 장치.The backlight device of claim 7, further comprising a reflective film surrounding the light source and the light guide plate to block light emitted to the outside. 제7항에 있어서, 상기한 도광판에 평행하게 설치되어 있어, 상기 도광판으로부터 유도된 빛을 확산하는 확산판을 더 포함하는 액정 디스플레이용 백라이트 장치.8. The liquid crystal display backlight device as claimed in claim 7, further comprising a diffusion plate disposed in parallel with the light guide plate to diffuse light induced from the light guide plate. 제10항에 있어서, 상기 확산판에 평행하게 설치되어, 상기 확산판으로부터 방출되는 빛의 이용 효율을 높여주는 프리즘관을 더 포함하는 액정 디스플레이용 백라이트 장치.11. The liquid crystal display backlight device of claim 10, further comprising a prism tube disposed in parallel with the diffusion plate to increase utilization efficiency of light emitted from the diffusion plate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950013456A 1995-05-26 1995-05-26 Back-lighting device for liquid crystal display KR0169383B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950013456A KR0169383B1 (en) 1995-05-26 1995-05-26 Back-lighting device for liquid crystal display

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KR1019950013456A KR0169383B1 (en) 1995-05-26 1995-05-26 Back-lighting device for liquid crystal display

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KR0169383B1 KR0169383B1 (en) 1999-03-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100420615B1 (en) * 2001-06-25 2004-03-02 주식회사 지엘디 Flat type backlight for LCD using optical fiber
KR100417397B1 (en) * 1996-08-28 2004-05-31 엘지전자 주식회사 Illumination device for lcd
KR100499133B1 (en) * 2002-11-04 2005-07-04 삼성전자주식회사 Backlight unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100720426B1 (en) * 2003-02-18 2007-05-22 엘지.필립스 엘시디 주식회사 back light unit
KR100701072B1 (en) * 2003-03-27 2007-03-29 비오이 하이디스 테크놀로지 주식회사 Led backlight structure
JP2006032020A (en) 2004-07-13 2006-02-02 Sharp Corp Liquid crystal display

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100417397B1 (en) * 1996-08-28 2004-05-31 엘지전자 주식회사 Illumination device for lcd
KR100420615B1 (en) * 2001-06-25 2004-03-02 주식회사 지엘디 Flat type backlight for LCD using optical fiber
KR100499133B1 (en) * 2002-11-04 2005-07-04 삼성전자주식회사 Backlight unit

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Publication number Publication date
KR0169383B1 (en) 1999-03-20

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