WO2007135960A1 - 面状光源装置及び液晶表示装置 - Google Patents
面状光源装置及び液晶表示装置 Download PDFInfo
- Publication number
- WO2007135960A1 WO2007135960A1 PCT/JP2007/060156 JP2007060156W WO2007135960A1 WO 2007135960 A1 WO2007135960 A1 WO 2007135960A1 JP 2007060156 W JP2007060156 W JP 2007060156W WO 2007135960 A1 WO2007135960 A1 WO 2007135960A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- light source
- incident
- scanning
- source device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
-
- 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
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
Definitions
- Planar light source device and liquid crystal display device are planar light source devices and liquid crystal display device
- the present invention relates to a planar light source device that illuminates a liquid crystal panel with a back force, and a liquid crystal display device including the same.
- Liquid crystal displays that are thin and light and capable of displaying images are rapidly becoming popular due to price reductions due to progress in manufacturing technology and the development of image quality enhancement technology, and are widely used in personal computer monitors and TV receivers.
- a transmissive liquid crystal display device is generally used as the liquid crystal display device.
- the transmissive liquid crystal display device includes a planar light source called a backlight, and forms an image by spatially modulating illumination light from the light source using a liquid crystal panel.
- FIG. 1A is a view of a backlight using a conventional cold cathode ray tube as observed from the exit surface side
- FIG. 1B is a cross-sectional view.
- a later-described reflector 130 is omitted.
- Reference numeral 150 in FIG. 1 is a reflection sheet for effectively utilizing the light leaking from the reflection surface 113 by reflecting it to the emission surface side.
- Reference numeral 150 denotes an optical film for controlling the directivity of light emitted from the emission surface, and a diffusion film and a prism sheet are appropriately combined according to the intended light distribution characteristics.
- LED light emitting diode
- FIG. 2 is a diagram showing a configuration of a planar light source using a LED light emitting element called a side emitter type in which the light emitting element itself is provided with a box-shaped reflecting member.
- FIG. 2A is a diagram centering on the light source part.
- FIG. 2B is a view of the light source section observed from the light guide plate.
- the transparent sealing resin part is omitted.
- This light source portion is formed by the light incident plate 210 entrance surface where each of the openings of the plurality of LED light source elements 220 is provided.
- This configuration it is possible to guide the emitted light to the light guide plate while stably holding the light source unit at a predetermined position facing the light guide plate.
- This method using LEDs is suitable for realizing a thin backlight with a relatively small screen size, and is often used for small displays such as mobile phones.
- Semiconductor lasers are capable of extracting large light output in a small area compared to LEDs, and the technology for basic performance such as electro-optic conversion efficiency will be remarkable in the near future. It is seen as promising as a light source.
- Patent Document 1 proposes a method of using a laser light source having a wide emission beam width and reflecting the light by a hologram element to guide the side surface of the light guide plate.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-169480
- an object of the present invention is to provide a planar light source having uniform brightness over the entire illumination area using a laser light source that generates a beam of light.
- the planar light source device of the present invention has a light source that emits a beam of light beams and one of two main surfaces facing each other in a substantially flat plate as an exit surface, and a side surface.
- a light guide plate that is provided with an entrance surface, converts beam-like incident light incident on the entrance surface into linear exit light, and exits from a substantially linear exit region of the exit surface;
- a scanning optical system that scans the linear emission region by changing the traveling direction of the light beam at a constant scanning period and entering the incident surface as the incident light. The ratio of the time change rate of the area occupied by the scanning trajectory and the light intensity of the light flux is kept substantially constant over the scanning period.
- the planar light source device of the present invention has a light source that emits a beam of light in a beam shape and one of two main surfaces facing each other in a substantially flat plate as an emission surface, and an incident surface is provided on a side surface portion.
- a light guide plate that converts the beam-shaped incident light incident on the incident surface into a linear output light and emits the light from a substantially linear output region of the output surface; and a traveling direction of the light bundle is constant.
- the scanning optical system that scans the linear emission region by changing the scanning period and entering the incident surface as the incident light, and the time change rate of the area occupied by the scanning locus of the linear emission region And a control means for changing the output of the light source.
- the liquid crystal display device of the present invention includes the above planar light source device and the planar light source device.
- a configuration including a liquid crystal panel illuminated from the back cover is adopted.
- uniform brightness is realized by an electrical means for modulating the light intensity of the beam from the light source in synchronization with the scanning with respect to the linear emission region that changes with time by scanning. Therefore, it is possible to perform planar illumination with high brightness uniformity with a simple configuration.
- FIG. 1A is a plan view of a planar light source using a conventional cold cathode ray tube.
- FIG. 1B Sectional view of a planar light source using a conventional cold cathode ray tube
- FIG. 3 is a perspective view showing a planar light source device according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing details of a laser light source of the planar light source device according to the first embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a scanned portion of the planar light source device according to the first embodiment of the present invention.
- FIG. 6 is a diagram for explaining the operation of the planar light source device in the first embodiment of the present invention.
- FIG. 7 is a diagram showing the configuration of the planar light source device in the second embodiment of the present invention.
- FIG. 3 is a perspective view showing the configuration of the planar light source device according to Embodiment 1 of the present invention.
- the planar light source device 300 includes a light guide plate 310, a laser light source 320, a scanning mirror 330, a reflection sheet 340, and a control circuit 350.
- the planar light source device 300 also has an incident surface force provided at a corner of the light guide plate 310 by periodically scanning the beam of light from the laser light source 320 with a scanning mirror 330 constituting a scanning optical system. Enter.
- the incident light bundle that is, the incident light instantly forms a linear illumination light that moves according to the scanning of the mirror and covers the entire surface of the light guide plate during one period.
- the scanning angle range and incident surface shape are set to
- the light guide plate 310 is substantially flat and has one of two opposing main surfaces as an output surface, and enters the side surface portion. A light-emitting surface is provided, and the beam-shaped incident light incident on the light incident surface is converted into a linear light output and emitted from a substantially linear light-emitting region on the light emission surface.
- the laser light source 320 includes a semiconductor laser having a laser diode power and a drive circuit that drives the semiconductor laser with a drive current.
- the scanning mirror 330 causes the beam of light beam output from the laser light source 320 to enter the incident surface of the light guide plate 310 by reflecting light.
- the scanning mirror 330 oscillates or rotates in response to a control signal from the control circuit 350, and scans the linear illumination light over the entire surface of the light guide plate.
- the scanning mirror 330 is, for example, a galvanometer mirror, a polygon mirror, or a micromachine mirror using MEMS (Micro Electro Mechanical Systems).
- MEMS Micro Electro Mechanical Systems
- the reflection sheet 340 reflects the light leaking from the back surface facing the exit surface of the light guide plate 310 to the exit surface side.
- the control circuit 350 is configured by a microprocessor or the like, and outputs a control signal to a drive system (not shown) of the scanning mirror 330 to control the scanning angle of the scanning mirror 330. Further, the control circuit 350 controls the drive current of the laser light source 320 to change the output of the laser light source 320 in accordance with the time change rate of the area occupied by the scanning locus of the linear emission region.
- the red laser light source 320R, the green laser light source 320G, and the blue laser light source 320B are close to each other so that their optical axes are substantially aligned.
- White illumination is realized by forming a white laser light source 320 of three primary colors in close contact.
- the drive circuit of the laser light source 320 drives each of the laser light sources 320R, 320G, and 320B with a drive current.
- the control circuit 350 controls the drive currents of the laser light sources 320R, 320G, and 32OB, and modulates the color and light intensity of the light beam output from the laser light source 320.
- the control circuit 350 controls the drive currents of the laser light sources 320R, 320G, and 320B so that the color of the illumination light formed on the light guide plate 310 is constant.
- FIG. Fig. 5 is a cross-sectional view of the scanned part (A- ⁇ 'in Fig. 3), with a partially enlarged view of the main part.
- Anisotropic diffusion means 311 is formed on the incident surface of the light guide plate 310 by strip-shaped fine irregularities whose longitudinal direction is perpendicular to the thickness direction.
- the diffusing unit 311 has anisotropy in which the degree of light diffusion differs between the thickness direction of the light guide plate 310 and the other direction, and the incident light bundle is different in the thickness direction of the light guide plate 310. More spread. Light diffused at various angles in the thickness direction propagates while repeating total reflection between two opposing principal surfaces, following different paths in the same section according to the diffusion angle.
- a minute recess 312 is partially formed on the back surface of the light guide plate 310 that faces the exit surface, and light incident on that portion is reflected substantially in the normal direction of the exit surface, and is substantially a line of the exit surface. It is converted from a linear output region into a linear output light and output.
- the brightness distribution in the longitudinal direction of the linear emission region can be controlled by setting the shape such as the length and depth of the fine depression 312 and the density.
- the light guide plate 310 is configured so that the brightness distribution in the longitudinal direction is substantially uniform in each linear emission region.
- the amount of emitted light per unit length when the longitudinal direction of the linear emission region is divided by the unit length is the width per unit time of the corresponding length portion of the scanning trajectory.
- the shape and density of the recess 31 2 are set so that they are approximately proportional.
- the length of the linear emission region changes, and the moving speed also changes depending on the scanning angular velocity of the mirror and the incident surface shape.
- the light intensity is modulated in conjunction with the running state. This is because the entire light exit surface of the light guide plate 310 is illuminated uniformly. The pattern will be described with reference to FIG.
- This function S (t) is determined by the scanning angle function 0 (t) of the scanning mirror, the incident surface angle corresponding to each 0, and the like.
- Time derivative dSZdt is the illumination area per unit time.
- the illumination illuminance is proportional to the emitted light flux of the laser light source 320 per unit area, in order to keep the illuminance constant throughout the scanning cycle, the light output P (t) Strength) and the above dSZdt ratio should be kept constant.
- One way to keep the ratio between the optical output P (t) and the scanning area differential dSZdt constant is to keep each constant. It is easy to keep the light output P (t) constant, but it is difficult to keep the time derivative dSZdt of the scanning area constant.
- a relatively high scanning speed is required at the start and end of the scan, where the length of the emission region is relatively short in the scanning cycle, and a slow scanning speed is required when illuminating the diagonal portion, which is an intermediate part thereof.
- a relatively high scanning speed is required at the start and end of the scan, where the length of the emission region is relatively short in the scanning cycle, and a slow scanning speed is required when illuminating the diagonal portion, which is an intermediate part thereof.
- the optical output P (t) is proportional to the time differential dSZdt of the scanning area in that state. Modulate.
- the light output P (t) of the laser light source 320 is approximately proportional to the applied drive current and can be controlled under electrical drive conditions, and both the response time and dynamic range are sufficient to satisfy the above conditions.
- the time differential dSZdt of the scanning area can be calculated from the shape of the incident surface, the scanning angular velocity of the scanning mirror 330, and the relative position of each part. Further, the time differential dSZdt of the scanning area can be calculated by driving the laser light source 320 after assembling the planar light source device 300 and measuring the illuminance of each part of the exit surface of the light guide plate 310.
- the optical output P (t) proportional to the time differential dSZdt of the scanning area can be obtained based on the time differential dS Zdt of the scanning area.
- Light output obtained by control of control circuit 350 By providing the laser light source 320 with a drive current that realizes P (t), the illumination illuminance can be kept constant over the entire scanning period.
- brightness uniformity in the scanning direction that does not force the scanning optical system is realized by performing optical output modulation in synchronization with the scanning period.
- the brightness uniformity in the beam transmission direction can be controlled by the setting conditions of the minute recess 312 formed in the light guide plate 310 as in the conventional case.
- the surface light source device 300 having high brightness uniformity over the entire effective plane without accompanying unnecessary vibration radiation of the scanning mirror 330, an increase in driving power, and an increase in invalid time within the scanning cycle should be realized. Can do.
- a large laser output can be taken out from a small area and a semiconductor laser with good electro-optic conversion efficiency is used as the light source, a compact backlight can be produced for large screen display applications, and the backlight can be saved. Electricity can be achieved.
- the diffusing means 311 is formed on the incident surface of the light guide plate 310.
- a diffusion member may be provided.
- the fine recess 312 that is a fine structure is formed on the back surface of the light guide plate 310 that faces the light exit surface, but this may be formed on the light exit surface. .
- the force with the incident surface of the light guide plate as the corner of the light guide plate is obtained by installing the laser light source 420 and the scanning mirror 430 on the back surface of the light guide plate 410 as shown in FIG. It may be turned back so that the whole side surface portion force of the light guide plate 410 is also incident.
- Reference numeral 440 denotes a reflection sheet.
- the scanning area function S (t) itself is different from that in FIG. 6, but the entire screen is obtained by applying light intensity modulation proportional to the time fraction dSZdt of the scanning area S to the light output P (t).
- the point of making the brightness uniform is the same.
- the degree of freedom in device design can be increased. Further, since the incident surface and the scanning mirror 430 are not arranged at the corners of the light guide plate 410, the upper corner can also be used as the exit surface, and the exit surface can be made wider. Also, the optical path from the scanning mirror 430 to the incident surface of the light guide plate 410 Therefore, the scanning angle of the scanning mirror 430 can be reduced.
- each embodiment is a case where P (t) Z ⁇ dSZdt ⁇ is made constant by controlling P (t), but is combined with control of the scanning angular velocity of the scanning mirror and control of the scanning cycle.
- P (t) Z ⁇ dSZdt ⁇ may be kept constant.
- the setting of the depressions formed in the light guide plate and the modulation of the light output of the laser light source synchronized with the scanning of the linear illumination light Therefore, it is possible to have a predetermined illuminance distribution that is not uniform.
- the density of the depressions is set so as to be particularly bright near the center in the longitudinal direction, and P (t) / ⁇ dS / dt ⁇ is set to be particularly high near the center of the light guide plate.
- P (t) / ⁇ dS / dt ⁇ is set to be particularly high near the center of the light guide plate.
- the illuminance in the central portion of the light guide plate can be made higher than in other portions.
- human eyes tend to feel the entire screen bright when the area around the center is bright. Brightening the center of the light guide plate makes it possible to reduce power consumption without making the viewer aware that the screen has become dark.
- a scanning mirror that reflects the light beam is used as the scanning optical system that changes the traveling direction of the light beam emitted from the laser light source at a constant scanning period
- the present invention is limited to a mirror such as a scanning mirror. It is not something.
- a deflecting element that deflects the light beam may be used, and may be oscillated or rotated in the same manner as the scanning mirror described above.
- one of two opposing main surfaces that are substantially flat is used as an output surface, an incident surface is provided on a side surface, and beam-shaped incident light incident on the incident surface is received
- a light guide plate that is converted into linear emitted light and exits from a substantially linear exit region of the exit surface, a beam-like light source that emits a beam-like light bundle in a fixed direction, and the light bundle
- a scanning optical system that scans the linear emission region by changing the traveling direction at a constant scanning period and entering the incident surface as the incident light, and occupies the scanning trace of the linear emission region
- the ratio between the rate of time change of the area and the light intensity of the light flux is kept almost constant over the scanning period, thereby making the average illuminance of each scanning region changing with time uniform. it can.
- the beam-like ray is proportional to the time change rate of the scanning area.
- the incident light incident from the incident surface of the light guide plate propagates while being totally reflected between the two main surfaces, and a part of the incident light is emitted.
- a fine structure provided on the surface or the opposite surface is caused to deviate from the total reflection condition force to be emitted from the emission surface, and the amount of emitted light per unit length in the longitudinal direction of the linear emission region is
- the shape or density of the fine structure is set so as to be approximately proportional to the width of the scanning trajectory per unit time, and this makes the illuminance distribution in the longitudinal direction of the linear emission region uniform. it can.
- a planar light source device can be realized with a small number of parts, a simple structure, high brightness uniformity, and a liquid crystal display device such as a liquid crystal TV. Contributes to lighter equipment and higher quality.
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- Optics & Photonics (AREA)
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/301,171 US7823785B2 (en) | 2006-05-18 | 2007-05-17 | Planar light source device and liquid crystal display device |
JP2008516642A JP4990275B2 (ja) | 2006-05-18 | 2007-05-17 | 面状光源装置及び液晶表示装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-138446 | 2006-05-18 | ||
JP2006138446 | 2006-05-18 |
Publications (1)
Publication Number | Publication Date |
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WO2007135960A1 true WO2007135960A1 (ja) | 2007-11-29 |
Family
ID=38723272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/060156 WO2007135960A1 (ja) | 2006-05-18 | 2007-05-17 | 面状光源装置及び液晶表示装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7823785B2 (ja) |
JP (1) | JP4990275B2 (ja) |
WO (1) | WO2007135960A1 (ja) |
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US8456588B2 (en) | 2008-06-03 | 2013-06-04 | Panasonic Corporation | Liquid crystal display backlight and liquid crystal display device using same |
WO2014030375A1 (en) * | 2012-08-21 | 2014-02-27 | Kabushiki Kaisha Toshiba | Backlight unit and video display apparatus using the same |
CN109804425A (zh) * | 2017-03-14 | 2019-05-24 | 欧姆龙株式会社 | 显示装置 |
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TWM356140U (en) * | 2008-12-09 | 2009-05-01 | Global Lighting Technologies Taiwan Inc | Structure for eliminating bright line of mated back-light module |
TW201237825A (en) * | 2011-03-11 | 2012-09-16 | Hon Hai Prec Ind Co Ltd | Front light unit and reflective dispay device employing the same |
US9389415B2 (en) | 2012-04-27 | 2016-07-12 | Leia Inc. | Directional pixel for use in a display screen |
US9459461B2 (en) | 2012-05-31 | 2016-10-04 | Leia Inc. | Directional backlight |
US9201270B2 (en) | 2012-06-01 | 2015-12-01 | Leia Inc. | Directional backlight with a modulation layer |
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US9557466B2 (en) | 2014-07-30 | 2017-01-31 | Leia, Inc | Multibeam diffraction grating-based color backlighting |
KR102257061B1 (ko) * | 2014-07-30 | 2021-05-27 | 레이아 인코포레이티드 | 다중빔 회절 격자-기반의 컬러 백라이트 |
WO2016024200A2 (en) * | 2014-08-12 | 2016-02-18 | Mantisvision Ltd. | Structured light projection and imaging |
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JP2018517242A (ja) | 2015-05-09 | 2018-06-28 | レイア、インコーポレイテッドLeia Inc. | 色走査格子ベースのバックライトおよび同バックライトを用いる電子ディスプレイ |
JP6754425B2 (ja) | 2015-05-30 | 2020-09-09 | レイア、インコーポレイテッドLeia Inc. | 車両監視システム |
US10373544B1 (en) | 2016-01-29 | 2019-08-06 | Leia, Inc. | Transformation from tiled to composite images |
CA3089955C (en) | 2018-03-01 | 2022-10-18 | Leia Inc. | Static multiview display and method employing collimated guided light |
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- 2007-05-17 JP JP2008516642A patent/JP4990275B2/ja not_active Expired - Fee Related
- 2007-05-17 WO PCT/JP2007/060156 patent/WO2007135960A1/ja active Application Filing
- 2007-05-17 US US12/301,171 patent/US7823785B2/en not_active Expired - Fee Related
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JPS59119206A (ja) * | 1982-12-07 | 1984-07-10 | ロウバ−,インコ−ポレイテツド | 光学式位置探知装置 |
JPH10333588A (ja) * | 1997-05-30 | 1998-12-18 | Ichikoh Ind Ltd | カラー液晶表示装置用のバックライト |
JP2002502545A (ja) * | 1997-06-03 | 2002-01-22 | アドリアン アルフレッド ウーラード レスリー | 照明方法及び照明装置 |
JPH11232025A (ja) * | 1998-02-18 | 1999-08-27 | Fujitsu Ltd | 光走査型タッチパネル |
JP2001066648A (ja) * | 1999-08-30 | 2001-03-16 | Sony Corp | 照明装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8456588B2 (en) | 2008-06-03 | 2013-06-04 | Panasonic Corporation | Liquid crystal display backlight and liquid crystal display device using same |
JP5307134B2 (ja) * | 2008-06-03 | 2013-10-02 | パナソニック株式会社 | 液晶バックライト及びこれを用いた液晶表示装置 |
WO2014030375A1 (en) * | 2012-08-21 | 2014-02-27 | Kabushiki Kaisha Toshiba | Backlight unit and video display apparatus using the same |
CN109804425A (zh) * | 2017-03-14 | 2019-05-24 | 欧姆龙株式会社 | 显示装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007135960A1 (ja) | 2009-10-01 |
US20090207342A1 (en) | 2009-08-20 |
US7823785B2 (en) | 2010-11-02 |
JP4990275B2 (ja) | 2012-08-01 |
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