KR940011999A - Backlight device for liquid crystal display device - Google Patents

Backlight device for liquid crystal display device Download PDF

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Publication number
KR940011999A
KR940011999A KR1019920020947A KR920020947A KR940011999A KR 940011999 A KR940011999 A KR 940011999A KR 1019920020947 A KR1019920020947 A KR 1019920020947A KR 920020947 A KR920020947 A KR 920020947A KR 940011999 A KR940011999 A KR 940011999A
Authority
KR
South Korea
Prior art keywords
plate
light
liquid crystal
crystal display
display device
Prior art date
Application number
KR1019920020947A
Other languages
Korean (ko)
Other versions
KR960000258B1 (en
Inventor
이호
Original Assignee
이헌조
주식회사 금성사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019920020947A priority Critical patent/KR960000258B1/en
Publication of KR940011999A publication Critical patent/KR940011999A/en
Application granted granted Critical
Publication of KR960000258B1 publication Critical patent/KR960000258B1/en

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Classifications

    • 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

Abstract

본 발명은 액정 표시소자용 백라이트 장치에 관한 것으로, 종래에는 코올드 캐소드 프로레이트 라이트를 사용하여 광원의 빛을 도광판에서 회전시킨후 반사판에서 반사하고 이후 확산판으로 확산하여 여러 진행 방향으로 액정표시소자에 인가하여 빛의 불균일한 휘도분포로 되어 액정표시소자의 성능을 저하시키는 문제점이 있었다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight device for a liquid crystal display device. Conventionally, by using a cathode cathode light, the light of a light source is rotated in a light guide plate, reflected from a reflector plate, and then diffused into a diffuser plate, thereby spreading the liquid crystal display device in various directions. There is a problem in that the uneven luminance distribution of the light is applied to reduce the performance of the liquid crystal display.

본 발명은 상기와 같은 종래의 문제점을 감안하여 코올드 캐오스 프로레이트 라이트의 확산판위에 반사판을 포함하는 프리즘판을 부착하여 반사판을 통해 반사된 빛을 확산판에서 서로다른 진행방향으로 확산한후 프리즘판에서 일정한 진행 방향으로 액정표시 소자에 균일한 휘도 분포로 인가하여 애정표시소자의 성능을 향상하는 효과가 있다.In view of the above-described conventional problems, the present invention attaches a prism plate including a reflecting plate on a diffuser plate of copper chaos prorate light to diffuse light reflected through the reflecting plate in a different traveling direction from the diffuser plate. The prism plate is applied to the liquid crystal display device with a uniform luminance distribution in a predetermined traveling direction, thereby improving the performance of the love display device.

Description

액정표시 소자용 백라이트 장치Backlight device for liquid crystal display device

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

제4도는 본 발명의 프리즘판을 이용한 액정표시 소자용 백라이트 장치 구성도,4 is a configuration diagram of a backlight device for a liquid crystal display device using the prism plate of the present invention;

제5도는 제4도의 부분별 상세도.FIG. 5 is a detailed view of parts of FIG.

Claims (2)

광원(1)을 통한 빛을 회전시키는 도광판(2) 하부에 그 도광판(2)의 빛을 반사시키는 반사판(3)이 부착되고, 상기 도광판(2) 상부에 상기 반사판(3) 및 도광판(2)을 통한 빛을 확산하는 확산판(4)이 부착되며, 그 확산판(4)위에 확산된 빛을 일정방향으로 반사시키는 프리즘판(5)이 구비된 구조의 액정 표시소자용 백라이트 장치.A reflecting plate 3 reflecting the light of the light guide plate 2 is attached to the lower part of the light guide plate 2 for rotating the light through the light source 1, and the reflecting plate 3 and the light guide plate 2 above the light guide plate 2. And a diffuser plate (4) for diffusing light through the plate, and a prism plate (5) for reflecting light diffused on the diffuser plate in a predetermined direction. 제2항에 있어서, 상기 프리즘판(5)내의 반사판(6)의 각은 45°가 됨을 특징으로 하는 액정표시소자용 백라이트 장치.The backlight device according to claim 2, wherein the angle of the reflecting plate (6) in the prism plate (5) is 45 degrees. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020947A 1992-11-09 1992-11-09 Back light for liquid crystal display elements KR960000258B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020947A KR960000258B1 (en) 1992-11-09 1992-11-09 Back light for liquid crystal display elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020947A KR960000258B1 (en) 1992-11-09 1992-11-09 Back light for liquid crystal display elements

Publications (2)

Publication Number Publication Date
KR940011999A true KR940011999A (en) 1994-06-22
KR960000258B1 KR960000258B1 (en) 1996-01-04

Family

ID=19342743

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020947A KR960000258B1 (en) 1992-11-09 1992-11-09 Back light for liquid crystal display elements

Country Status (1)

Country Link
KR (1) KR960000258B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030080764A (en) * 2002-04-10 2003-10-17 주식회사 윈스텍 A Direct-lighting Backlight Unit
KR100625437B1 (en) * 2005-05-16 2006-09-15 엘지전자 주식회사 Backlight unit and prism sheet employed in the same
KR100671174B1 (en) * 1998-05-11 2007-01-19 닛토덴코 가부시키가이샤 Reflection type liquid-crystal display unit
KR100823442B1 (en) * 2006-02-21 2008-04-17 주식회사 엘지화학 Anisotropy Diffusion Sheet
KR101147095B1 (en) * 2010-01-13 2012-05-17 황장환 Composite Light Guide Plate, and Backlight Unit Using the Same
KR20120052707A (en) * 2010-11-16 2012-05-24 엘지디스플레이 주식회사 Backlight unit and liquid crystal display device using the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100671174B1 (en) * 1998-05-11 2007-01-19 닛토덴코 가부시키가이샤 Reflection type liquid-crystal display unit
KR20030080764A (en) * 2002-04-10 2003-10-17 주식회사 윈스텍 A Direct-lighting Backlight Unit
KR100625437B1 (en) * 2005-05-16 2006-09-15 엘지전자 주식회사 Backlight unit and prism sheet employed in the same
KR100823442B1 (en) * 2006-02-21 2008-04-17 주식회사 엘지화학 Anisotropy Diffusion Sheet
KR101147095B1 (en) * 2010-01-13 2012-05-17 황장환 Composite Light Guide Plate, and Backlight Unit Using the Same
KR20120052707A (en) * 2010-11-16 2012-05-24 엘지디스플레이 주식회사 Backlight unit and liquid crystal display device using the same

Also Published As

Publication number Publication date
KR960000258B1 (en) 1996-01-04

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