WO2009019989A1 - Backlight device, liquid crystal display device, optical member, and lenticular lens sheet - Google Patents
Backlight device, liquid crystal display device, optical member, and lenticular lens sheet Download PDFInfo
- Publication number
- WO2009019989A1 WO2009019989A1 PCT/JP2008/063309 JP2008063309W WO2009019989A1 WO 2009019989 A1 WO2009019989 A1 WO 2009019989A1 JP 2008063309 W JP2008063309 W JP 2008063309W WO 2009019989 A1 WO2009019989 A1 WO 2009019989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lenticular lens
- lens sheet
- backlight device
- cylindrical lenses
- liquid crystal
- Prior art date
Links
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
- 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
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
A backlight device has an area light source, a lenticular lens sheet (31), and a diffusion sheet (32). The area light source has linear light sources arranged next to each other. The lenticular lens sheet (31) is installed over the area light source. The lenticular lens sheet (31) has cylindrical lenses arranged next to each other in the direction in which the linear light sources are arranged next to each other, and also has flat sections each formed between adjacent cylindrical lenses. The pitch Pc of the cylindrical lenses, the width Wf of a flat section, and the height Hc of a cylindrical lens satisfy the formula (1) and formula (2). The diffusion sheet (32) is installed over the cylindrical lenses and has a haze in the range of 70% to 80%. In the backlight device, uneven luminance is suppressed and the width of viewing angle dependence of luminance in the direction of a specific axis is maintained wide. 1/16 ≤ Wf/Pc < 1/6 (1) 5/16 ≤ Hc/Pc ≤ 1/2 (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007206168A JP4163243B1 (en) | 2007-08-08 | 2007-08-08 | Backlight device, liquid crystal display device, optical member and lenticular lens sheet |
JP2007-206168 | 2007-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009019989A1 true WO2009019989A1 (en) | 2009-02-12 |
Family
ID=39916210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/063309 WO2009019989A1 (en) | 2007-08-08 | 2008-07-24 | Backlight device, liquid crystal display device, optical member, and lenticular lens sheet |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4163243B1 (en) |
TW (1) | TW200914947A (en) |
WO (1) | WO2009019989A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020129015A3 (en) * | 2018-12-20 | 2020-09-03 | 3M Innovative Properties Company | Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5822103B2 (en) * | 2009-10-22 | 2015-11-24 | 東洋紡株式会社 | Viewing angle improving film for liquid crystal display device, protective film with viewing angle improving function, and liquid crystal display device |
JP5822102B2 (en) * | 2009-10-22 | 2015-11-24 | 東洋紡株式会社 | Viewing angle enhancement film for liquid crystal display device, protective film with viewing angle enhancement function, and liquid crystal display device |
JP2012220662A (en) * | 2011-04-07 | 2012-11-12 | Toyobo Co Ltd | Film for improving viewing angle and liquid crystal display device |
JP2012226158A (en) * | 2011-04-20 | 2012-11-15 | Toyobo Co Ltd | Film for improving viewing angle, film laminate for improving viewing angle, and liquid crystal display device |
CN103578367A (en) * | 2013-11-13 | 2014-02-12 | 广东威创视讯科技股份有限公司 | LED display device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11142622A (en) * | 1997-11-13 | 1999-05-28 | Dainippon Printing Co Ltd | Lens film, surface light source device and liquid crystal display device |
JP2004006256A (en) * | 2002-03-26 | 2004-01-08 | Sharp Corp | Backlight and liquid crystal display device |
JP2006164719A (en) * | 2004-12-07 | 2006-06-22 | Sumitomo Rubber Ind Ltd | Direct backlight |
JP2007012517A (en) * | 2005-07-01 | 2007-01-18 | Dainippon Printing Co Ltd | Surface light source device |
-
2007
- 2007-08-08 JP JP2007206168A patent/JP4163243B1/en active Active
-
2008
- 2008-07-15 TW TW097126783A patent/TW200914947A/en unknown
- 2008-07-24 WO PCT/JP2008/063309 patent/WO2009019989A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11142622A (en) * | 1997-11-13 | 1999-05-28 | Dainippon Printing Co Ltd | Lens film, surface light source device and liquid crystal display device |
JP2004006256A (en) * | 2002-03-26 | 2004-01-08 | Sharp Corp | Backlight and liquid crystal display device |
JP2006164719A (en) * | 2004-12-07 | 2006-06-22 | Sumitomo Rubber Ind Ltd | Direct backlight |
JP2007012517A (en) * | 2005-07-01 | 2007-01-18 | Dainippon Printing Co Ltd | Surface light source device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020129015A3 (en) * | 2018-12-20 | 2020-09-03 | 3M Innovative Properties Company | Light control film with turning film and lenticular diffuser for view enhancement in the horizontal plane |
CN113196113A (en) * | 2018-12-20 | 2021-07-30 | 3M创新有限公司 | Light control film with turning film and lenticular diffuser for enhancing view in a horizontal plane |
Also Published As
Publication number | Publication date |
---|---|
JP4163243B1 (en) | 2008-10-08 |
JP2009043506A (en) | 2009-02-26 |
TW200914947A (en) | 2009-04-01 |
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