JP5969735B2 - バックライトユニット及びそれを用いたディスプレイ装置 - Google Patents
バックライトユニット及びそれを用いたディスプレイ装置 Download PDFInfo
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- JP5969735B2 JP5969735B2 JP2011110458A JP2011110458A JP5969735B2 JP 5969735 B2 JP5969735 B2 JP 5969735B2 JP 2011110458 A JP2011110458 A JP 2011110458A JP 2011110458 A JP2011110458 A JP 2011110458A JP 5969735 B2 JP5969735 B2 JP 5969735B2
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- Prior art keywords
- reflector
- light source
- light
- display device
- reflective
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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
- G02B6/005—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
- G02B6/0055—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
- G02B6/0058—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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Description
Claims (17)
- 光学部材と、
前記光学部材から離隔して配置され、一部に傾斜面を有するリフレクタと、
前記リフレクタの一側に連結され、前記リフレクタを固定する固定部と、
前記光学部材と前記リフレクタとの間に配置される光源と、を含み、
前記リフレクタの前記傾斜面の一部または全部に複数の反射層が配置され、
前記複数の反射層は、バックライト全体の輝度を均一にするために互いに異なる反射率を有し、
前記リフレクタの前記傾斜面は、前記光学部材の表面に対して平行な水平面から一定角だけ傾斜し、
前記固定部の上面は、前記リフレクタの前記傾斜面と平行ではないディスプレイ装置。 - 前記反射層上に形成された反射パターンをさらに含む、請求項1に記載のディスプレイ装置。
- 前記反射パターンは、前記光源から遠ざかるほど漸次大きくなる、請求項2に記載のディスプレイ装置。
- 前記リフレクタの下部表面と前記固定部の上部表面は互いに対向するように配置され、前記リフレクタと前記固定部が連結された一側から遠ざかるほど、前記リフレクタの下部表面と前記固定部の上部表面との間の距離が漸次遠ざかる、請求項1ないし3のいずれか1項に記載のディスプレイ装置。
- 前記リフレクタの下部表面と前記固定部の上部表面との間には弾性体及びスペーサーのうち少なくともいずれか一つが配置される、請求項1ないし4のいずれか1項に記載のディスプレイ装置。
- 前記リフレクタの厚さは、前記光源から遠ざかるほど厚くなる、請求項1ないし5のいずれか1項に記載のディスプレイ装置。
- 前記リフレクタの傾斜面は、前記光源から入射される光軸に対して0〜85度の角度だけ傾斜する、請求項1ないし6のいずれか1項に記載のディスプレイ装置。
- 前記リフレクタの傾斜面は、第1の面及び第2の面を有する鋸歯状であって、前記第1の面と前記第2の面との間の角が鋭角及び鈍角のうち少なくともいずれか一つである、請求項1ないし7のいずれか1項に記載のディスプレイ装置。
- 前記リフレクタの傾斜面は平面又は曲面である、請求項1ないし8のいずれか1項に記載のディスプレイ装置。
- 前記光源は、前記リフレクタの少なくともいずれか一側に接触して配置されたり、又は一定間隔だけ離隔して配置される、請求項1ないし9のいずれか1項に記載のディスプレイ装置。
- 前記光源の光を前記リフレクタの傾斜面の方向に反射させる反射鏡をさらに含む、請求項1ないし10のいずれか1項に記載のディスプレイ装置。
- 前記光学部材と前記リフレクタとの間に配置され、内部に溝を有するブラケットをさらに含み、前記光源は前記ブラケットの溝内に配置される、請求項1ないし11のいずれか1項に記載のディスプレイ装置。
- 前記ブラケットの溝は前記リフレクタの方向に形成される、請求項12に記載のディスプレイ装置。
- 前記ブラケットの溝の表面には他の反射層が備えられる、請求項12または13に記載のディスプレイ装置。
- 前記ブラケットの溝の内部には光拡散層が充填される、請求項12ないし14のいずれか1項に記載のディスプレイ装置。
- 前記光拡散層は、前記光源の前面に一定間隔だけ離隔して配置される、請求項15に記載のバックライトユニット。
- 前記光学部材と前記リフレクタとの間の空間にエアガイドが形成される、請求項1ないし16のいずれか1項に記載のディスプレイ装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100079673A KR101189161B1 (ko) | 2010-08-18 | 2010-08-18 | 백라이트 유닛 및 이를 포함하는 표시장치 |
KR10-2010-0079673 | 2010-08-18 | ||
KR1020100092846A KR101171856B1 (ko) | 2010-09-24 | 2010-09-24 | 백라이트 유닛 |
KR10-2010-0092846 | 2010-09-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2012043772A JP2012043772A (ja) | 2012-03-01 |
JP2012043772A5 JP2012043772A5 (ja) | 2014-07-03 |
JP5969735B2 true JP5969735B2 (ja) | 2016-08-17 |
Family
ID=44512556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011110458A Active JP5969735B2 (ja) | 2010-08-18 | 2011-05-17 | バックライトユニット及びそれを用いたディスプレイ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8684547B2 (ja) |
EP (1) | EP2420874B1 (ja) |
JP (1) | JP5969735B2 (ja) |
CN (1) | CN102374455B (ja) |
TW (1) | TWI554809B (ja) |
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-
2011
- 2011-05-17 JP JP2011110458A patent/JP5969735B2/ja active Active
- 2011-05-17 US US13/109,102 patent/US8684547B2/en active Active
- 2011-06-09 TW TW100120221A patent/TWI554809B/zh not_active IP Right Cessation
- 2011-06-10 CN CN201110162627.3A patent/CN102374455B/zh not_active Expired - Fee Related
- 2011-06-10 EP EP11169426.1A patent/EP2420874B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US8684547B2 (en) | 2014-04-01 |
TW201209489A (en) | 2012-03-01 |
EP2420874A1 (en) | 2012-02-22 |
EP2420874B1 (en) | 2020-08-19 |
US20110286202A1 (en) | 2011-11-24 |
JP2012043772A (ja) | 2012-03-01 |
TWI554809B (zh) | 2016-10-21 |
CN102374455A (zh) | 2012-03-14 |
CN102374455B (zh) | 2016-01-20 |
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