WO2007049379A1 - 光学シートの支持構造、照明装置、表示装置 - Google Patents
光学シートの支持構造、照明装置、表示装置 Download PDFInfo
- Publication number
- WO2007049379A1 WO2007049379A1 PCT/JP2006/312324 JP2006312324W WO2007049379A1 WO 2007049379 A1 WO2007049379 A1 WO 2007049379A1 JP 2006312324 W JP2006312324 W JP 2006312324W WO 2007049379 A1 WO2007049379 A1 WO 2007049379A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- support
- optical sheet
- protrusion
- receiving
- 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
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/54—Arrangements for reducing warping-twist
Definitions
- the present invention relates to an optical sheet support structure, a lighting device, and a display device.
- a backlight device used in a liquid crystal display device or the like a backlight device having an optical component in which a plurality of optical sheets are arranged in a laminated form on a panel such as a diffusion plate or a light guide plate is widely known (for example, Patent Document 1).
- This optical component is arranged in front of or on the side of the light source, and is used for the purpose of irradiating the light emitted from the light source uniformly on the liquid crystal panel.
- An example of the support structure is shown in FIG. There is. That is, the peripheral portion is sandwiched between the receiving member 15 and the pressing member 16 to support the panel 10 and the optical sheet 11.
- the assembly can be performed. In this case, it is possible to easily assemble by simply stacking the parts one above the other.
- Patent Document 1 JP 2002-341345
- the panel 10 may be tilted forward by the gap (ie, play) provided between the pressing member 16 and the optical sheet 11. is there.
- the panel 10 has become larger with the increase in the size of the display device. Therefore, once the panel 10 falls down, the peripheral edge of the optical sheet 11 is sandwiched between the fallen panel 10 and the pressing member 16 and strongly pressed. Second, it is caused by the fall of the pressing member 16. Force that may cause other parts to be placed above the pressing member 16 In this case, if the supporting member 16 is not sufficiently supported, the tip end portion 16A is inclined downward (see FIG. 9).
- the pressing member 16 may be formed of resin. In this case, it is difficult to expect high part accuracy. If the initial gap is narrower than expected, the tip 16A of the pressing member 16 presses the periphery of the optical sheet 11 and presses strongly due to the tipping of the tip.
- the present invention has been completed on the basis of the above-described circumstances, and a structure for supporting an optical sheet that can support the panel that presses the optical sheet, and thus the optical sheet, and an illumination device using the same.
- An object of the present invention is to provide a display device.
- the support structure for an optical sheet of the present invention includes a plate-shaped panel, an optical sheet stacked on the panel so as to form an exposed portion at a peripheral portion thereof, and a peripheral portion of the panel in contact with the optical sheet.
- the support protrusion regulates the play of the panel between the two panel supports, so that the panel support is stable. This prevents the panel from tilting when used with the panel upright.
- the support protrusion is integrally formed on the support or the panel. Thereby, compared with the case where a support protrusion is comprised by another member, manufacturing cost can be held down.
- the pressing panel support is configured to have a cantilever shape so as to overlap the optical sheet, and has an opposing portion on which the support protrusion is formed, and the protrusion length of the support protrusion is the same as that of the optical sheet.
- the thickness is set to be higher than the thickness of the optical sheet so that a gap is retained between the opposing portions. As a result, the gap is provided with respect to the periphery of the optical sheet. You can arrange the head.
- a relief part is cut out at the position opposite the support protrusion on the optical sheet, thereby exposing a part of the panel to form an exposed part.
- Either the receiving panel support or the facing portion is provided with a posture holding portion that abuts against the other side and supports the facing portion together with the supporting protrusion. Thereby, it is possible to suppress the falling of the facing portion and to prevent the tip of the facing portion from interfering with the optical sheet.
- the support structure for the panel of the present invention includes a panel having a plate shape, an optical sheet stacked on the panel so as to form an exposed portion at a peripheral edge thereof, and the panel.
- a receiving-side panel support that holds the panel in contact with the peripheral edge of the panel, and is disposed on the opposite side of the panel-supporting body, and the peripheral edge of the panel and optical sheet between the receiving-side panel support
- a pressing-side panel support that has a frame-like shape as a whole, and two or more posture holding portions that support the opposite portion in a posture along the surface of the optical sheet. . With such a configuration, the opposing portion is supported at two or more points, and thus the support becomes stronger.
- the optical sheet since the optical sheet is not pressed strongly by other parts, even if the room temperature or the like changes, the optical sheet does not bend. It is possible to uniformly irradiate the light and contribute to improving the quality of the lighting device.
- FIG. 1 is an exploded perspective view of a display device according to Embodiment 1.
- FIG. 5 is a cross-sectional view showing a support structure for a facing portion according to Embodiment 2.
- FIG. 6 is a cross-sectional view showing the support structure of the facing portion according to Embodiment 3.
- FIG. 8 is a diagram showing a state in which the optical sheet is bent.
- Embodiment 1 of the present invention will be described with reference to FIGS.
- FIG. 1 is an exploded perspective view of the display device 20.
- the display device 20 is mainly composed of a liquid crystal panel 30 having a planar shape capable of displaying an image, and a backlight device (corresponding to the illumination device of the present invention) 40.
- the liquid crystal panel 30 includes a pair of glass substrates, a liquid crystal filled between both glass substrates, and a pair of polarizing plates attached to the outer surfaces of both glass substrates.
- the liquid crystal panel 30 is backed by an outer frame 35 having a frame shape. It is held in a state of being overlaid above the light device 40.
- the knocklight device 40 is a so-called direct type backlight device in which a plurality of cold-cathode tubes 65 are arranged side by side at a position directly below the liquid crystal panel 30, and the cold-cathode tube 65 is disposed inside.
- a base tray 60 is provided, and a diffusion plate (corresponding to the panel of the present invention) 51 and three optical sheets 55A to 55C are arranged so as to close the upper surface of the opening.
- Three optical sheets are formed to be approximately the same size as diffusion plate 51, and are arranged on top of diffusion plate 51.
- the These optical sheets 55A to 55C and the diffusing plate 51 are for converting the substantially linear light emitted from each cold cathode tube 65 into a planar light to irradiate the liquid crystal panel 30 evenly, and its size Is formed in a rectangular surface shape larger than the display area of the display device 20. Yes.
- reference numeral 80 shown in FIG. 1 denotes an inner frame (the pressing side panel of the present invention) that holds the diffusion plate 51 and the three optical sheets 55A to 55C in a state of being sandwiched between the base tray 60.
- a frame support the support structure for the optical sheets 55A to 55C and the diffusion plate 51 will be described in detail with reference to FIGS.
- FIG. 2 is a diagram showing a general cross section of the display device 20, and
- FIG. 3 is a plan view of the backlight device 40.
- the inner frame 80 is indicated by a one-dot chain line.
- the base tray 60 includes a metal box-shaped base panel 61 whose upper surface is open, and a synthetic resin receiving member (corresponding to the receiving panel support of the present invention) 71 And force is composed.
- the receiving member 71 as a whole has a frame shape that follows the outer shape of the diffusion plate 51, and is fitted to the inner periphery of the base panel 61 without a gap.
- the upper surface of the receiving member 71 is a flat seating surface 71A, and is configured to receive the peripheral portion of the diffuser plate 51 (both left and right peripheral portions in FIG. 2).
- an upright piece (corresponding to the posture holding portion of the present invention) 72 standing upward in the figure is provided on the side edge portion of the upper surface of the receiving member 71.
- the standing piece 72 is formed over the entire circumference of the receiving member 71, but partially bulges inward to form a positioning portion 73.
- a pair of positioning portions 73A are formed on the left and right pieces shown in FIG. 3, and five positioning portions 73B are provided on the upper and lower pieces, respectively.
- slits 53A and 53B are provided at the peripheral edge of the diffusion plate 51 and at positions opposed to the positioning portions 73A and 73B, respectively.
- the diffusing plate 51 is positioned in the surface direction (left-right and up-down directions in FIG. 2) by fitting the slits 53A and 53B to the positioning portions 73A and 73B.
- the positioning portion 73 and the slit 53 are also provided so as to avoid the display area of the display device 20.
- slits 57A and 57B are also provided in the respective optical sheets 55 arranged on the diffusion plate 51 in a stacked manner at positions facing the positioning portions 73A and 73B, respectively.
- the left and right slits 57A have the same shape as the slit 53A of the diffusion plate 51, whereas in the upper and lower slits 57B (for example, part C)
- the slit width (F2 dimension in FIG. 3) Is widely formed.
- the widened portion (the area indicated by hatching in FIG. 3 and the relief portion of the present invention). 2), the upper surface of the diffusion plate 51 is exposed to form an exposed portion 54.
- FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3 (a cross-sectional view at the exposed portion).
- the inner frame 80 is made of a synthetic resin, and includes a mounting piece 81 extending vertically in FIG. 4 and a facing piece extending horizontally inward (leftward in FIG. 4) from a position near the upper end of the mounting piece 81. (Corresponding to the facing portion of the present invention) 83, and has a substantially L-shaped cross section. On the other hand, from the side edge portion of the receiving member 71, as described above, the rising piece 72 that stands up in the figure is provided. The height is the base end of the opposed piece 83 of the inner frame 80. The height at which the tip just hits the part 87 is preset. As a result, the upright piece 72 supports the opposing piece 83.
- the presser seat portion 84 is formed with a width so as to form a region overlapping with the periphery of the optical sheet 55 (G portion in FIG. 4), and at the right end portion of the lower surface 84A, the diffusion plate 51 A support protrusion 85 that protrudes downward in the figure and contacts the exposed portion 54 is provided at a position facing the exposed portion 54.
- the support protrusion 85 is integrally formed with the inner frame 80, and the protrusion length from the lower surface 84A (HI dimension portion shown in FIG. 4) is the thickness of three optical sheets (H2 shown in FIG. 4). (Dimension part) Higher setting. As a result, the upper surface of the diffusion plate 51 can be directly pressed by the support protrusion 85 while a gap is secured between the optical sheet 55 and the pressing seat 84.
- the inner frame 80 is formed with a screw through hole (not shown), while the receiving member 71 on the other side is formed with a screw hole at a position facing it.
- the inner frame 80 can be fixed to the receiving member 71 by screwing from above.
- the diffusion plate 51 is held in an immovable state between the receiving member 71 and the presser seat portion 84 of the opposing piece 83.
- two opposing pieces 83 extending in a cantilever manner are supported. That is, the first point is the support by the standing piece 72 described above, and the second point is the support by the contact between the support protrusion 85 and the exposed portion 54.
- the inner frame 80 is made of resin, and the parts themselves are not sufficiently rigid and the part accuracy is not so high.
- the upper surface of the opposing piece 83 is a panel support surface 83A for supporting the liquid crystal panel 30, and supports the peripheral edge of the liquid crystal panel 30.
- the diffusion plate 51 since the upper surface of the diffusion plate 51 is directly pressed by the support protrusions 85, for example, even when the display device 20 is used in a standing state, the diffusion plate 51 may be inclined. Absent. Further, since the opposing piece 83 of the inner frame 80 is supported at two points, the falling of the opposing piece 83 can be effectively controlled.
- the optical sheet 55 is not compressed by interfering with peripheral parts such as the opposed piece 83.
- peripheral parts such as the opposed piece 83.
- the optical sheet 55 It is possible to uniformly irradiate the liquid crystal panel with light emitted from a light source that does not cause curved stagnation in the sheet 55.
- Embodiment 2 of the present invention will be described with reference to FIG.
- the support protrusion 85 is provided on the lower surface of the holding seat 84 and its end surface is brought into contact with the exposed portion 54 of the diffusion plate 51.
- the configuration is reversed and the support protrusion 95 is provided. Is provided on the diffusing plate 90 and its end face is brought into contact with the lower surface 84A of the presser seat 84. Even with such a configuration, the same effects as those of the first embodiment can be obtained.
- FIG. 5 the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
- the upright piece 72 and the support protrusion 85 support the opposing piece 83 at two points.
- the support protrusion 85 is used instead of the support protrusion 85 to maintain a dedicated posture.
- Protrusion (corresponding to the posture holding portion of the present invention) 100 is newly added to the receiving member 71, and the posture holding protrusion 100 and the upright piece 72 are brought into contact with the lower surface of the opposed piece 83 so that the opposed piece 83 is This is a point-supporting configuration, and the other configurations are the same as in the first embodiment.
- Embodiments 1 to 3 the direct-type backlight device in which the cold cathode tube 65 as a light source is disposed directly below the liquid crystal panel 30 is illustrated, but the light source is disposed on the side.
- the present invention can also be applied to a backlight device of this type.
- the support protrusions 85 and 95 are provided on one side. That is, in the first embodiment, the support protrusion 85 is provided on the holding seat 84, and in the second embodiment, the support protrusion 95 is provided on the diffusion plate 90.
- the configuration of the support protrusions 85 and 95 is not limited to this.
- the support projections 85 and 95 may be provided on both the presser seat portion 84 and the diffusion plate 90 and contact each other.
- the support protrusions 85 and 95 may be configured by force parts integrally formed with the inner frame 80 or the diffusion plate 90.
- Embodiments 1 to 3 all are configured to support the opposing piece 83 of the inner frame 80 at two points, but the required support strength can be secured without supporting two points.
- the height of the support protrusions 85, 95 is made higher than the thickness of the optical sheet 55, and a gap is formed between the presser seat 84 and the optical sheet 55. I set it up actively, It is desirable that the gap between the two is as small as possible. If the optical sheet 55 is not pressed, it is possible to adopt a configuration in which the two are brought into contact with each other.
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/066,544 US7982815B2 (en) | 2005-10-27 | 2006-06-20 | Optical-sheet supporting structure, lighting device and display device |
JP2007542241A JP4777355B2 (ja) | 2005-10-27 | 2006-06-20 | 光学シートの支持構造、照明装置、表示装置 |
CN2006800360621A CN101278226B (zh) | 2005-10-27 | 2006-06-20 | 光学片的支撑结构、照明装置、显示装置 |
US13/155,450 US8184234B2 (en) | 2005-10-27 | 2011-06-08 | Optical-sheet supporting structure, lighting device and display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-313156 | 2005-10-27 | ||
JP2005313156 | 2005-10-27 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/066,544 A-371-Of-International US7982815B2 (en) | 2005-10-27 | 2006-06-20 | Optical-sheet supporting structure, lighting device and display device |
US13/155,450 Division US8184234B2 (en) | 2005-10-27 | 2011-06-08 | Optical-sheet supporting structure, lighting device and display device |
Publications (1)
Publication Number | Publication Date |
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WO2007049379A1 true WO2007049379A1 (ja) | 2007-05-03 |
Family
ID=37967501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/312324 WO2007049379A1 (ja) | 2005-10-27 | 2006-06-20 | 光学シートの支持構造、照明装置、表示装置 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7982815B2 (ja) |
JP (1) | JP4777355B2 (ja) |
CN (1) | CN101278226B (ja) |
WO (1) | WO2007049379A1 (ja) |
Cited By (8)
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WO2008146498A1 (ja) * | 2007-05-31 | 2008-12-04 | Sharp Kabushiki Kaisha | 表示装置及びテレビ受信装置 |
WO2008149567A1 (ja) | 2007-06-04 | 2008-12-11 | Sharp Kabushiki Kaisha | バックライト装置、表示装置およびテレビジョン受像機 |
JP2009087924A (ja) * | 2007-09-13 | 2009-04-23 | Nec Lcd Technologies Ltd | バックライト及び液晶表示装置 |
WO2010073805A1 (ja) * | 2008-12-25 | 2010-07-01 | シャープ株式会社 | フレーム、光源装置、表示装置およびテレビ受信機 |
CN102043267A (zh) * | 2008-03-05 | 2011-05-04 | 乐金显示有限公司 | 显示器件 |
JP2012014893A (ja) * | 2010-06-30 | 2012-01-19 | Hitachi Displays Ltd | 表示装置 |
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JP4255607B2 (ja) * | 2000-10-05 | 2009-04-15 | 三菱電機株式会社 | 面状光源装置及び液晶表示装置 |
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JP2003279935A (ja) * | 2002-03-25 | 2003-10-02 | Toshiba Corp | 液晶表示装置 |
JP4400161B2 (ja) | 2003-09-26 | 2010-01-20 | セイコーエプソン株式会社 | 液晶表示装置 |
KR100819709B1 (ko) * | 2003-09-29 | 2008-04-04 | 엘지.필립스 엘시디 주식회사 | 액정표시장치의 모듈 |
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- 2006-06-20 JP JP2007542241A patent/JP4777355B2/ja not_active Expired - Fee Related
- 2006-06-20 CN CN2006800360621A patent/CN101278226B/zh not_active Expired - Fee Related
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JPWO2008146498A1 (ja) * | 2007-05-31 | 2010-08-19 | シャープ株式会社 | 表示装置及びテレビ受信装置 |
JP4615613B2 (ja) * | 2007-05-31 | 2011-01-19 | シャープ株式会社 | 表示装置及びテレビ受信装置 |
EP2151709A4 (en) * | 2007-05-31 | 2011-04-13 | Sharp Kk | DISPLAY APPARATUS AND ASSOCIATED TV RECEIVER |
WO2008146498A1 (ja) * | 2007-05-31 | 2008-12-04 | Sharp Kabushiki Kaisha | 表示装置及びテレビ受信装置 |
WO2008149567A1 (ja) | 2007-06-04 | 2008-12-11 | Sharp Kabushiki Kaisha | バックライト装置、表示装置およびテレビジョン受像機 |
EP2149740A1 (en) * | 2007-06-04 | 2010-02-03 | Sharp Kabushiki Kaisha | Backlight unit, display unit and television receiver |
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JP2009087924A (ja) * | 2007-09-13 | 2009-04-23 | Nec Lcd Technologies Ltd | バックライト及び液晶表示装置 |
CN102043267A (zh) * | 2008-03-05 | 2011-05-04 | 乐金显示有限公司 | 显示器件 |
KR101319156B1 (ko) * | 2008-03-05 | 2013-10-17 | 엘지디스플레이 주식회사 | 표시장치 |
US9671630B2 (en) | 2008-03-05 | 2017-06-06 | Lg Display Co., Ltd. | Display device |
CN102265086A (zh) * | 2008-12-25 | 2011-11-30 | 夏普株式会社 | 框架、光源装置、显示装置和电视接收机 |
WO2010073805A1 (ja) * | 2008-12-25 | 2010-07-01 | シャープ株式会社 | フレーム、光源装置、表示装置およびテレビ受信機 |
JP2013080724A (ja) * | 2008-12-25 | 2013-05-02 | Sharp Corp | 光源装置用のフレーム、光源装置および表示装置 |
US8491169B2 (en) | 2008-12-25 | 2013-07-23 | Sharp Kabushiki Kaisha | Frame, light source device, display device, and television receiver |
JP2012014893A (ja) * | 2010-06-30 | 2012-01-19 | Hitachi Displays Ltd | 表示装置 |
US8913207B2 (en) | 2010-06-30 | 2014-12-16 | Japan Display Inc. | Display device |
KR101396640B1 (ko) * | 2013-06-17 | 2014-05-16 | 엘지디스플레이 주식회사 | 표시장치 |
Also Published As
Publication number | Publication date |
---|---|
US20090268121A1 (en) | 2009-10-29 |
US8184234B2 (en) | 2012-05-22 |
CN101278226B (zh) | 2010-11-10 |
JP4777355B2 (ja) | 2011-09-21 |
JPWO2007049379A1 (ja) | 2009-04-30 |
US7982815B2 (en) | 2011-07-19 |
US20110235366A1 (en) | 2011-09-29 |
CN101278226A (zh) | 2008-10-01 |
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