KR102147253B1 - 도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치 - Google Patents

도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치 Download PDF

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Publication number
KR102147253B1
KR102147253B1 KR1020130157297A KR20130157297A KR102147253B1 KR 102147253 B1 KR102147253 B1 KR 102147253B1 KR 1020130157297 A KR1020130157297 A KR 1020130157297A KR 20130157297 A KR20130157297 A KR 20130157297A KR 102147253 B1 KR102147253 B1 KR 102147253B1
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KR
South Korea
Prior art keywords
light guide
guide plate
angle
axis direction
inclined surface
Prior art date
Application number
KR1020130157297A
Other languages
English (en)
Korean (ko)
Other versions
KR20150070736A (ko
Inventor
박세기
하상우
유준우
이하영
김유동
염동열
정승환
Original Assignee
삼성디스플레이 주식회사
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 삼성디스플레이 주식회사 filed Critical 삼성디스플레이 주식회사
Priority to KR1020130157297A priority Critical patent/KR102147253B1/ko
Priority to US14/262,772 priority patent/US10088621B2/en
Priority to JP2014097115A priority patent/JP2015118906A/ja
Priority to CN201410322776.5A priority patent/CN104714269A/zh
Publication of KR20150070736A publication Critical patent/KR20150070736A/ko
Priority to US16/115,914 priority patent/US10330846B2/en
Application granted granted Critical
Publication of KR102147253B1 publication Critical patent/KR102147253B1/ko

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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
    • G02B6/0033—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
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough 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
    • G02B6/0036—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
    • G02B6/005—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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
KR1020130157297A 2013-12-17 2013-12-17 도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치 KR102147253B1 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020130157297A KR102147253B1 (ko) 2013-12-17 2013-12-17 도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치
US14/262,772 US10088621B2 (en) 2013-12-17 2014-04-27 Light guide panel, backlight unit, and liquid crystal display
JP2014097115A JP2015118906A (ja) 2013-12-17 2014-05-08 導光板及びバックライトユニット
CN201410322776.5A CN104714269A (zh) 2013-12-17 2014-07-08 导光板、背光单元和液晶显示器
US16/115,914 US10330846B2 (en) 2013-12-17 2018-08-29 Light guide panel, backlight unit, and liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130157297A KR102147253B1 (ko) 2013-12-17 2013-12-17 도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치

Publications (2)

Publication Number Publication Date
KR20150070736A KR20150070736A (ko) 2015-06-25
KR102147253B1 true KR102147253B1 (ko) 2020-08-25

Family

ID=53413751

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130157297A KR102147253B1 (ko) 2013-12-17 2013-12-17 도광판, 백라이트 유닛 및 이를 포함하는 액정 표시 장치

Country Status (3)

Country Link
JP (1) JP2015118906A (ja)
KR (1) KR102147253B1 (ja)
CN (1) CN104714269A (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104930411B (zh) * 2015-06-30 2017-10-10 京东方科技集团股份有限公司 一种背光源模组
CN105629373B (zh) * 2016-04-07 2019-05-03 张浩楠 一种lcd导光板及其制造工艺
US10890708B2 (en) 2018-05-25 2021-01-12 Koyj Co., Ltd. Light guide plate having engraved pattern and backlight unit having same and display device having same
WO2020029004A1 (zh) 2018-08-06 2020-02-13 瑞仪(广州)光电子器件有限公司 导光板、背光模组及显示装置
CN109655958B (zh) * 2018-09-13 2020-11-10 韩国高一智株式会社 一种带有凹角形状的导光板及使用该导光板的背光模组
TWI783349B (zh) * 2021-01-19 2022-11-11 光耀科技股份有限公司 導光膜及背光模組
JPWO2023276836A1 (ja) * 2021-06-29 2023-01-05

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021668A1 (en) * 2007-07-16 2009-01-22 Au Optronics Corp. Backlight Module and Liquid Crystal Display Comprising the Same
JP2013187059A (ja) * 2012-03-08 2013-09-19 Hitachi Chemical Co Ltd 導光板及び面光源装置
JP2013206834A (ja) * 2012-03-29 2013-10-07 Toppan Printing Co Ltd 導光体を用いた照明ユニット及びこれを備えた表示装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0544332B1 (en) * 1991-11-28 1997-01-29 Enplas Corporation Surface light source device
JP4671344B2 (ja) * 2005-08-03 2011-04-13 シチズン電子株式会社 導光板及びそれを用いたバックライト装置
KR101440498B1 (ko) * 2007-11-12 2014-09-18 삼성디스플레이 주식회사 도광판 및 이를 갖는 표시장치
JP2012079681A (ja) * 2010-09-09 2012-04-19 Hitachi Chemical Co Ltd 導光板及び面光源装置
CN201867507U (zh) * 2010-10-29 2011-06-15 京东方科技集团股份有限公司 导光板、背光模组及液晶显示器
JP5323274B2 (ja) * 2011-02-15 2013-10-23 三菱電機株式会社 面光源装置及び液晶表示装置
US8613542B2 (en) * 2011-12-09 2013-12-24 Skc Haas Display Films Co., Ltd. Light guide films having reduced banding levels
JP5556836B2 (ja) * 2012-03-15 2014-07-23 オムロン株式会社 面光源装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021668A1 (en) * 2007-07-16 2009-01-22 Au Optronics Corp. Backlight Module and Liquid Crystal Display Comprising the Same
JP2013187059A (ja) * 2012-03-08 2013-09-19 Hitachi Chemical Co Ltd 導光板及び面光源装置
JP2013206834A (ja) * 2012-03-29 2013-10-07 Toppan Printing Co Ltd 導光体を用いた照明ユニット及びこれを備えた表示装置

Also Published As

Publication number Publication date
JP2015118906A (ja) 2015-06-25
KR20150070736A (ko) 2015-06-25
CN104714269A (zh) 2015-06-17

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