KR100932304B1 - 배면에 비대칭 프리즘을 구비하는 백라이트 유닛용 도광판및 이를 이용한 액정표시장치 - Google Patents
배면에 비대칭 프리즘을 구비하는 백라이트 유닛용 도광판및 이를 이용한 액정표시장치 Download PDFInfo
- Publication number
- KR100932304B1 KR100932304B1 KR1020070109793A KR20070109793A KR100932304B1 KR 100932304 B1 KR100932304 B1 KR 100932304B1 KR 1020070109793 A KR1020070109793 A KR 1020070109793A KR 20070109793 A KR20070109793 A KR 20070109793A KR 100932304 B1 KR100932304 B1 KR 100932304B1
- Authority
- KR
- South Korea
- Prior art keywords
- guide plate
- light guide
- light
- prism
- liquid crystal
- Prior art date
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Classifications
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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
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- 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
-
- 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
- G02B6/0035—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
- G02B6/0045—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 by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
Abstract
Description
실험예9 | 실험예10 | 실험예11 | 실험예12 | 실험예13 | |
1차내각(α) | 90° | 85° | 80° | 75° | 70° |
사이각(θ) | 45° | 50° | 55° | 60° | 65° |
2차내각(β) | 45° | 45° | 45° | 45° | 45° |
프리즘 높이 | 25㎛ | 23㎛ | 21.2㎛ | 19.7㎛ | 18.3㎛ |
비교예 3 | 실험예9 | 실험예10 | 실험예11 | 실험예12 | 실험예13 | |
수직휘도 (cd) | 217.6 | 261.5 | 272.2 | 256.5 | 230.0 | 211.3 |
수직반치각 | -9°/+7° | -10°/+12° | -10°/+12° | -10°/+12° | -10°/+15° | -10°/+17° |
1차내각(α) | 90° | 90° | 85° | 80° | 75° | 70° |
사이각(θ) | 45° | 45° | 50° | 55° | 60° | 65° |
2차내각(β) | 45° | 45° | 45° | 45° | 45° | 45° |
Claims (12)
- 빛이 입사되는 측면, 상기 측면에 연결되어 상기 빛을 출사시키는 전면(前面) 및 빛을 반사하는 배면(背面)을 포함하는 액정표시 장치용 도광판에 있어서,상기 배면에 빛이 입사되는 방향과 수직인 길이방향을 가지며, 단면이 비대칭 삼각형의 형태를 가지는 프리즘으로 구성된 배면 프리즘부가 형성되며,상기 프리즘은 광원측의 내각이 70°~90°범위이고, 광원 반대측의 내각이 40°~50°범위이고,상기 전면에는 높이 : 피치의 비율이 0.09 내지 0.29 범위인 타원형상의 단면을 가지는 광학부재로 구성되는 전면렌즈부가 형성되어 있는 것을 특징으로 하는 도광판.
- 삭제
- 삭제
- 삭제
- 제 1 항에 있어서,상기 전면렌즈부의 길이방향은 프리즘의 길이방향과 80°~100°각도를 이루는 것을 특징으로 하는 도광판.
- 제 1 항에 있어서,상기 광학부재는 높이 : 피치의 비율이 0.16 내지 0.29 범위인 타원형상의 단면을 가지는 것을 특징으로 하는 도광판.
- 제 1 항에 있어서,상기 광학부재와 광학부재 사이의 사이각이 60° 내지 120° 범위인 것을 특징으로 하는 도광판.
- 제 1 항에 있어서,상기 광학부재의 곡률반경은 상기 렌즈 피치의 0.58 내지 1.0배의 범위인 것을 특징으로 하는 도광판.
- 제 1 항에 있어서,상기 배면 프리즘부는 빛이 입사되는 측면에서 멀어질수록 폭이 증가하는 스트라이프 패턴의 형태로 형성되는 것을 특징으로 하는 도광판.
- 삭제
- 제 1 항의 도광판; 및상기 도광판의 일측 또는 양측에 배치되는 광원을 포함하는 액정표시장치용 백라이트 유닛.
- 제 1 항의 도광판; 및상기 도광판의 일측에 배치되는 광원을 포함하는 액정표시장치.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070109793A KR100932304B1 (ko) | 2007-10-30 | 2007-10-30 | 배면에 비대칭 프리즘을 구비하는 백라이트 유닛용 도광판및 이를 이용한 액정표시장치 |
CN2007801013897A CN101842738B (zh) | 2007-10-30 | 2007-11-26 | 用于lcd背光单元的导光面板以及lcd背光单元 |
TW096145056A TWI367354B (en) | 2007-10-30 | 2007-11-26 | Light guide panel for lcd back light unit and lcd back light unit thereby |
PCT/KR2007/005976 WO2009057844A1 (en) | 2007-10-30 | 2007-11-26 | Light guide panel for lcd back light unit and lcd back light unit thereby |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070109793A KR100932304B1 (ko) | 2007-10-30 | 2007-10-30 | 배면에 비대칭 프리즘을 구비하는 백라이트 유닛용 도광판및 이를 이용한 액정표시장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090043959A KR20090043959A (ko) | 2009-05-07 |
KR100932304B1 true KR100932304B1 (ko) | 2009-12-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070109793A KR100932304B1 (ko) | 2007-10-30 | 2007-10-30 | 배면에 비대칭 프리즘을 구비하는 백라이트 유닛용 도광판및 이를 이용한 액정표시장치 |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR100932304B1 (ko) |
CN (1) | CN101842738B (ko) |
TW (1) | TWI367354B (ko) |
WO (1) | WO2009057844A1 (ko) |
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WO2014130860A1 (en) * | 2013-02-22 | 2014-08-28 | Reald Inc. | Directional backlight |
US9188731B2 (en) | 2012-05-18 | 2015-11-17 | Reald Inc. | Directional backlight |
US9235057B2 (en) | 2012-05-18 | 2016-01-12 | Reald Inc. | Polarization recovery in a directional display device |
US9350980B2 (en) | 2012-05-18 | 2016-05-24 | Reald Inc. | Crosstalk suppression in a directional backlight |
US9420266B2 (en) | 2012-10-02 | 2016-08-16 | Reald Inc. | Stepped waveguide autostereoscopic display apparatus with a reflective directional element |
US9429764B2 (en) | 2012-05-18 | 2016-08-30 | Reald Inc. | Control system for a directional light source |
US9436015B2 (en) | 2012-12-21 | 2016-09-06 | Reald Inc. | Superlens component for directional display |
US9519153B2 (en) | 2010-11-19 | 2016-12-13 | Reald Inc. | Directional flat illuminators |
US9551825B2 (en) | 2013-11-15 | 2017-01-24 | Reald Spark, Llc | Directional backlights with light emitting element packages |
US9594261B2 (en) | 2012-05-18 | 2017-03-14 | Reald Spark, Llc | Directionally illuminated waveguide arrangement |
US9678267B2 (en) | 2012-05-18 | 2017-06-13 | Reald Spark, Llc | Wide angle imaging directional backlights |
US9709723B2 (en) | 2012-05-18 | 2017-07-18 | Reald Spark, Llc | Directional backlight |
US10062357B2 (en) | 2012-05-18 | 2018-08-28 | Reald Spark, Llc | Controlling light sources of a directional backlight |
US10393946B2 (en) | 2010-11-19 | 2019-08-27 | Reald Spark, Llc | Method of manufacturing directional backlight apparatus and directional structured optical film |
US10425635B2 (en) | 2016-05-23 | 2019-09-24 | Reald Spark, Llc | Wide angle imaging directional backlights |
US10627670B2 (en) | 2018-01-25 | 2020-04-21 | Reald Spark, Llc | Reflective optical stack for privacy display |
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- 2007-10-30 KR KR1020070109793A patent/KR100932304B1/ko active IP Right Grant
- 2007-11-26 TW TW096145056A patent/TWI367354B/zh not_active IP Right Cessation
- 2007-11-26 CN CN2007801013897A patent/CN101842738B/zh not_active Expired - Fee Related
- 2007-11-26 WO PCT/KR2007/005976 patent/WO2009057844A1/en active Application Filing
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US9235057B2 (en) | 2012-05-18 | 2016-01-12 | Reald Inc. | Polarization recovery in a directional display device |
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US9188731B2 (en) | 2012-05-18 | 2015-11-17 | Reald Inc. | Directional backlight |
US10048500B2 (en) | 2012-05-18 | 2018-08-14 | Reald Spark, Llc | Directionally illuminated waveguide arrangement |
US10365426B2 (en) | 2012-05-18 | 2019-07-30 | Reald Spark, Llc | Directional backlight |
US10062357B2 (en) | 2012-05-18 | 2018-08-28 | Reald Spark, Llc | Controlling light sources of a directional backlight |
US9420266B2 (en) | 2012-10-02 | 2016-08-16 | Reald Inc. | Stepped waveguide autostereoscopic display apparatus with a reflective directional element |
US9436015B2 (en) | 2012-12-21 | 2016-09-06 | Reald Inc. | Superlens component for directional display |
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US10750160B2 (en) | 2016-01-05 | 2020-08-18 | Reald Spark, Llc | Gaze correction of multi-view images |
US11079619B2 (en) | 2016-05-19 | 2021-08-03 | Reald Spark, Llc | Wide angle imaging directional backlights |
US10425635B2 (en) | 2016-05-23 | 2019-09-24 | Reald Spark, Llc | Wide angle imaging directional backlights |
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US10788710B2 (en) | 2017-09-15 | 2020-09-29 | Reald Spark, Llc | Optical stack for switchable directional display |
US11092851B2 (en) | 2017-09-15 | 2021-08-17 | Reald Spark, Llc | Optical stack for switchable directional display |
US10627670B2 (en) | 2018-01-25 | 2020-04-21 | Reald Spark, Llc | Reflective optical stack for privacy display |
US10802356B2 (en) | 2018-01-25 | 2020-10-13 | Reald Spark, Llc | Touch screen for privacy display |
Also Published As
Publication number | Publication date |
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WO2009057844A1 (en) | 2009-05-07 |
TWI367354B (en) | 2012-07-01 |
TW200918973A (en) | 2009-05-01 |
CN101842738B (zh) | 2012-06-20 |
CN101842738A (zh) | 2010-09-22 |
KR20090043959A (ko) | 2009-05-07 |
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