JP2016143668A - バックライトアセンブリおよびこれを含む液晶表示装置 - Google Patents
バックライトアセンブリおよびこれを含む液晶表示装置 Download PDFInfo
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- JP2016143668A JP2016143668A JP2016015655A JP2016015655A JP2016143668A JP 2016143668 A JP2016143668 A JP 2016143668A JP 2016015655 A JP2016015655 A JP 2016015655A JP 2016015655 A JP2016015655 A JP 2016015655A JP 2016143668 A JP2016143668 A JP 2016143668A
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- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 52
- 230000003746 surface roughness Effects 0.000 claims abstract description 72
- 230000007423 decrease Effects 0.000 claims description 17
- 235000019592 roughness Nutrition 0.000 description 36
- 239000000758 substrate Substances 0.000 description 16
- 230000005684 electric field Effects 0.000 description 9
- 238000005315 distribution function Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- 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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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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
- G02F2203/00—Function characteristic
- G02F2203/02—Function characteristic reflective
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
Description
複数の孔525は一定の形状に形成され、同一または類似の大きさで形成される。例えば、複数の孔525は円形に形成することができる。但し、本発明はこれに限定されず、複数の孔525は円形でない他の形状に形成されてもよく、複数の孔525が互いに異なる形状に形成されてもよい。また、複数の孔525の大きさが一定でなくてもよい。例えば、一例であるが、光源600から遠ざかるほど、穴525が小さくなってもよい。言い替えれば、光源600に近い穴525ほど大きい。この場合、光源600に近い穴525から、表面粗度が大きい第1反射シート510によって反射される確率が大きくなり、表面粗度が大きい第1反射シート510により光を反射することで、光の均一度を高めることができる。
110 第1基板
120 第2基板
500 バックライトアセンブリ
510 第1反射シート
520 第2反射シート
525 孔
600 光源
610 レンズ
Claims (15)
- 互いに異なる第1表面粗度および第2表面粗度を有する反射シート、および
前記反射シートに隣接するように配置されている光源を含むバックライトアセンブリ。 - 前記反射シートが第1反射シートおよび第2反射シートを含み、
前記第1反射シートが前記第1表面粗度を有し、
前記第2反射シートが前記第2表面粗度を有することを特徴とする請求項1に記載のバックライトアセンブリ。 - 前記第2反射シートが前記第1反射シートの上に位置することを特徴とする請求項2に記載のバックライトアセンブリ。
- 前記第2反射シートには複数の孔が形成されていることを特徴とする請求項3に記載のバックライトアセンブリ。
- 前記第1表面粗度が前記第2表面粗度より大きいことを特徴とする請求項3に記載のバックライトアセンブリ。
- 前記第1反射シートの中心線平均粗度が1.0μm以上であり、
前記第1反射シートの最大高さ粗度が10μm以上であることを特徴とする請求項5に記載のバックライトアセンブリ。 - 前記第2反射シートの中心線平均粗度が0.1μm以下であり、
前記第2反射シートの最大高さ粗度が1.5μm以下であることを特徴とする請求項5に記載のバックライトアセンブリ。 - 前記第2反射シートには複数の孔が形成されていることを特徴とする請求項5に記載のバックライトアセンブリ。
- 前記光源から遠くなるほど、前記孔の密度が減少するか、増加することを特徴とする請求項8に記載のバックライトアセンブリ。
- 前記複数の孔が前記光源を中心にして放射状に配置されていることを特徴とする請求項8に記載のバックライトアセンブリ。
- 前記複数の孔が前記光源を中心にした四角形の縁に配置されていることを特徴とする請求項8に記載のバックライトアセンブリ。
- 前記孔が円形、楕円形、三角形、四角形、および多角形のうちの少なくとも一つの形状を有することを特徴とする請求項8に記載のバックライトアセンブリ。
- 前記第1表面粗度が前記第2表面粗度より小さいことを特徴とする請求項3に記載のバックライトアセンブリ。
- 前記第2反射シートには複数の孔が形成されていることを特徴とする請求項13に記載のバックライトアセンブリ。
- 前記光源から遠くなるほど、前記孔の密度が減少するか、増加することを特徴とする請求項14に記載のバックライトアセンブリ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0016224 | 2015-02-02 | ||
KR1020150016224A KR102362197B1 (ko) | 2015-02-02 | 2015-02-02 | 백라이트 어셈블리 및 이를 포함하는 액정 표시 장치 |
Publications (2)
Publication Number | Publication Date |
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JP2016143668A true JP2016143668A (ja) | 2016-08-08 |
JP6836837B2 JP6836837B2 (ja) | 2021-03-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2016015655A Active JP6836837B2 (ja) | 2015-02-02 | 2016-01-29 | バックライトアセンブリおよびこれを含む液晶表示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10268074B2 (ja) |
EP (1) | EP3051336A1 (ja) |
JP (1) | JP6836837B2 (ja) |
KR (1) | KR102362197B1 (ja) |
CN (1) | CN105842911B (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016068590A1 (en) * | 2014-10-31 | 2016-05-06 | Lg Electronics Inc. | Backlight unit and display device including backlight unit |
US12000582B2 (en) | 2014-10-31 | 2024-06-04 | Lg Electronics Inc. | Display device having reflecting sheet with plurality of dot areas reducing reflectivity of the reflecting sheet |
CN107703678A (zh) * | 2017-09-11 | 2018-02-16 | 青岛海信电器股份有限公司 | 一种直下式背光模组以及显示装置 |
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JP2002279814A (ja) * | 2001-03-19 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 照明ユニット及びそれを用いた液晶表示装置 |
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JP2012185949A (ja) * | 2011-03-04 | 2012-09-27 | Hitachi Appliances Inc | レンズおよび照明装置 |
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KR20060114759A (ko) * | 2005-05-02 | 2006-11-08 | 삼성전자주식회사 | 백라이트 어셈블리 및 이를 갖는 표시장치 |
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2015
- 2015-02-02 KR KR1020150016224A patent/KR102362197B1/ko active IP Right Grant
- 2015-11-03 US US14/931,809 patent/US10268074B2/en active Active
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2016
- 2016-01-11 EP EP16150721.5A patent/EP3051336A1/en not_active Withdrawn
- 2016-01-19 CN CN201610034550.4A patent/CN105842911B/zh active Active
- 2016-01-29 JP JP2016015655A patent/JP6836837B2/ja active Active
Patent Citations (3)
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JP2002279814A (ja) * | 2001-03-19 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 照明ユニット及びそれを用いた液晶表示装置 |
JP2005050727A (ja) * | 2003-07-30 | 2005-02-24 | Advanced Display Inc | 面状光源装置および該装置を備えた表示装置 |
JP2012185949A (ja) * | 2011-03-04 | 2012-09-27 | Hitachi Appliances Inc | レンズおよび照明装置 |
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US20160223864A1 (en) | 2016-08-04 |
EP3051336A1 (en) | 2016-08-03 |
CN105842911B (zh) | 2021-07-13 |
JP6836837B2 (ja) | 2021-03-03 |
KR20160095289A (ko) | 2016-08-11 |
US10268074B2 (en) | 2019-04-23 |
CN105842911A (zh) | 2016-08-10 |
KR102362197B1 (ko) | 2022-02-11 |
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