WO2013115020A1 - Appareil d'éclairage, appareil d'affichage et récepteur de télévision - Google Patents

Appareil d'éclairage, appareil d'affichage et récepteur de télévision Download PDF

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Publication number
WO2013115020A1
WO2013115020A1 PCT/JP2013/051255 JP2013051255W WO2013115020A1 WO 2013115020 A1 WO2013115020 A1 WO 2013115020A1 JP 2013051255 W JP2013051255 W JP 2013051255W WO 2013115020 A1 WO2013115020 A1 WO 2013115020A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
lens sheet
lighting device
guide plate
Prior art date
Application number
PCT/JP2013/051255
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English (en)
Japanese (ja)
Inventor
貴博 吉川
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2013115020A1 publication Critical patent/WO2013115020A1/fr

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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
    • G02B6/0051—Diffusing 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
    • G02B6/005—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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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

Definitions

  • the present invention relates to a lighting device, a display device, and a television receiver.
  • the liquid crystal display device requires a backlight device as a separate illumination device because the liquid crystal panel used for this does not emit light.
  • a backlight device an edge light type backlight device in which a light incident surface is provided on a side surface of a light guide plate and a light source such as an LED is disposed on a side surface side of the light guide plate is known.
  • an edge-light type backlight device generally, a lens sheet provided with a prism lens for refracting light that has passed through the light guide plate to the front side on the front side (display surface side) of the light guide plate, Optical films such as a diffusion sheet for diffusing and a reflective polarizing sheet for improving luminance without disturbing the viewing angle are arranged.
  • Patent Document 1 discloses an optical film that can be used in a backlight device.
  • a diffusion fine structure having a coating layer of beads or the like is provided on the back side of the prism lens. Since light is diffused by the diffusion microstructure, the use of such an optical film in the backlight device can eliminate the diffusion sheet, reduce the material cost, and make the backlight device thinner and lighter. Can be achieved.
  • An object of the technology disclosed in the present specification is to provide a lighting device that can eliminate the diffusion sheet while maintaining display quality on the display surface, and can be reduced in thickness and weight.
  • the technology disclosed in the present specification is directed to a light guide plate having a light incident surface provided on a side surface and a light output surface provided on one plate surface, and opposed to the light incident surface of the light guide plate.
  • the illuminating device since the light emitted from the light exit surface of the light guide plate and transmitted through the lens sheet is diffused by the granular material, the side opposite to the side facing the light exit surface of the light guide plate of the lens sheet Even if a diffusion sheet is not disposed on the surface, it is possible to prevent glare on the surface of the lens sheet from being seen from the display surface. For this reason, in the edge light type lighting device, the diffusion sheet can be eliminated while maintaining the display quality on the display surface, and the thickness and weight can be reduced.
  • the granule may have a spherical surface at least on the side opposite to the side facing the lens sheet. According to this configuration, the light emitted from the spherical surface is more easily spread than the light emitted from the aspherical surface, so that the light transmitted through the lens sheet can be effectively diffused by the granular material.
  • the prism lens may have a mountain shape in a sectional view, and the granular material may be disposed on each of two inclined surfaces forming the mountain shape. According to this configuration, most of the light transmitted through the lens sheet is transmitted through the granular material, so that the light diffusion effect by the granular material can be enhanced.
  • the plurality of granular materials may be a plurality of beads coated on the lens sheet. According to this structure, the specific structure of a granular material is realizable.
  • a binder may be interposed between the prism lens and the beads. According to this configuration, since the beads can be arranged on the lens sheet by dispersing and applying the beads in the binder, a specific configuration for applying the beads can be realized.
  • the phrase “binder is interposed between beads” includes both the case where the entire bead is embedded in the binder and the case where a part of the bead is embedded in the binder.
  • the binder may be an ultraviolet curable resin.
  • the binder may be a thermosetting resin. According to this configuration, a specific configuration for arranging beads using a binder can be realized.
  • the beads may be made of a resin material. According to this configuration, a specific configuration of beads can be realized.
  • the plurality of granular bodies may be formed of substantially hemispherical protrusions provided integrally with the lens sheet. According to this configuration, the granular material can be formed on the lens sheet without using another member such as a bead.
  • the lens interval of the lens sheet may be in the range of 30 ⁇ m to 300 ⁇ m. According to this configuration, it is possible to make the lens interval within a realizable range, and it is possible to realize a specific lens interval for preventing the prism lens twill from being seen from the display surface.
  • the particle size of the granular material may be smaller than the lens interval of the lens sheet. Since it is necessary to leave the shape of the prism lens, the particle size of the granular material needs to be at least smaller than the lens interval. According to the above configuration, the shape of the prism lens can be prevented from being hidden by the granular material, and the function of the prism lens can be maintained even when the granular material is arranged on the surface.
  • the technology disclosed in this specification can also be expressed as a display device including a display panel that performs display using light from the above-described lighting device.
  • a display device in which the display panel is a liquid crystal panel using liquid crystal is also new and useful.
  • a television receiver provided with the above display device is also new and useful.
  • a diffusion sheet in an edge light type illumination device, can be eliminated while maintaining display quality on a display surface, and a reduction in thickness and weight can be achieved.
  • FIG. 1 is an exploded perspective view of a television receiver TV according to Embodiment 1.
  • FIG. Disassembled perspective view of the liquid crystal display device 10 Sectional view of the liquid crystal display device 10 Sectional drawing which expanded the surface of lens sheet 18a Sectional drawing which expanded the surface of the lens sheet 118a which concerns on Embodiment 2.
  • FIG. Sectional drawing of the liquid crystal display device 210 which concerns on Embodiment 3.
  • FIG. 4 is an exploded perspective view of a liquid crystal display device 310 according to Embodiment 4.
  • Embodiment 1 will be described with reference to the drawings.
  • a part of each drawing shows an X-axis, a Y-axis, and a Z-axis, and each axis direction is drawn in a common direction in each drawing.
  • the Y-axis direction coincides with the vertical direction
  • the X-axis direction coincides with the horizontal direction.
  • the vertical direction is used as a reference for upper and lower descriptions.
  • FIG. 1 is an exploded perspective view of the television receiver TV according to the first embodiment.
  • the television receiver TV includes a liquid crystal display device (an example of a display device) 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the display device D, a power source P, a tuner T, and a stand S. Yes.
  • FIG. 2 is an exploded perspective view of the liquid crystal display device 10.
  • the upper side shown in FIG. 2 is the front side, and the lower side is the back side.
  • the liquid crystal display device 10 has a horizontally long rectangular shape as a whole, and includes a liquid crystal panel 16 that is a display panel and a backlight device (an example of a lighting device) 24 that is an external light source.
  • a liquid crystal panel 16 that is a display panel
  • a backlight device an example of a lighting device
  • a bezel 12 or the like having a frame shape.
  • the liquid crystal panel 16 has a configuration in which a pair of transparent (highly translucent) glass substrates are bonded together with a predetermined gap therebetween, and a liquid crystal layer (not shown) is enclosed between the glass substrates. Is done.
  • One glass substrate is provided with a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like.
  • the substrate is provided with a color filter and counter electrodes in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, and an alignment film.
  • image data and various control signals necessary for displaying an image are supplied to a source wiring, a gate wiring, a counter electrode, and the like from a driving circuit board (not shown).
  • a polarizing plate (not shown) is disposed outside both glass substrates.
  • FIG. 3 shows a cross-sectional view of a cross section of the liquid crystal display device 10 cut along the vertical direction (Y-axis direction).
  • the backlight device 24 includes a frame 14, an optical member 18, and a chassis 22.
  • the frame 14 has a frame shape, is disposed along the edge side of the surface of the light guide plate 20 (light output surface 20b), and supports the liquid crystal panel 16 along the inner edge.
  • the optical member 18 is placed on the front side of the light guide plate 20 (the light exit surface 20b side).
  • the chassis 22 has a substantially box shape opened to the front side (light emission side, liquid crystal panel 16 side).
  • a light emitting diode (LED) unit 32 In the chassis 22, a light emitting diode (LED) unit 32, a reflection sheet 26, and a light guide plate 20 are accommodated.
  • the LED unit 32 is disposed on one long side outer edge (side plate) 22b of the chassis 22 and emits light.
  • One longitudinal side surface (light incident surface) 20a of the light guide plate 20 is disposed at a position facing the LED unit 32, and guides light emitted from the LED unit 32 to the liquid crystal panel 16 side.
  • the optical member 18 is placed on the front side of the light guide plate 20.
  • the light guide plate 20 and the optical member 18 are arranged directly below the liquid crystal panel 16 and the LED unit 32 that is a light source is arranged at the side end of the light guide plate 20.
  • a so-called edge light system (side light system) is adopted.
  • the backlight device 24 is configured such that the LED unit 32 is disposed only in one direction around the side surface of the light guide plate 20.
  • the chassis 22 is made of a metal such as an aluminum-based material, for example, and has a bottom plate 22a having a rectangular shape in plan view, side plates 22b and 22c rising from outer edges of both long sides of the bottom plate 22a, and each of short sides of the bottom plate 22a. It consists of a side plate that rises from the outer edge.
  • a space facing the LED unit 32 and the one side plate 22 c in the chassis 22 is a housing space for the light guide plate 20.
  • a power circuit board (not shown) for supplying power to the LED unit 32 is attached to the back side of the bottom plate 22a.
  • the LED unit 32 has a configuration in which LED light sources (an example of a light source) 28 that emits white light are arranged in a row on a resin-made rectangular LED board 30.
  • the LED substrate 30 is fixed to one side plate 22b of the chassis 22 by screws or the like.
  • the LED light source 28 may emit white light by applying a phosphor having a light emission peak in a yellow region to a blue light emitting element.
  • the blue light emitting element may emit white light by applying a phosphor having emission peaks in the green and red regions.
  • a phosphor having a light emission peak in a green region may be applied to a blue light emitting element, and white light may be emitted by combining a red light emitting element.
  • the LED light source 28 may emit white light by combining a blue light emitting element, a green light emitting element, and a red light emitting element. Further, a combination of an ultraviolet light emitting element and a phosphor may be used. In particular, an ultraviolet light-emitting element may emit white light by applying a phosphor having emission peaks in blue, green, and red, respectively.
  • the light guide plate 20 is a rectangular plate-like member, is formed of a highly transparent (highly transparent) resin such as acrylic, is in contact with the reflective sheet 26 and is supported by the chassis 22. Yes. As shown in FIG. 2, the light guide plate 20 has a light output surface 20b, which is a main plate surface, facing a lens sheet 18a, which will be described later, between the LED unit 26 and one side plate 22c of the chassis 22, and the light output surface 20b.
  • the opposite plate surface 20c which is the opposite plate surface, is arranged so as to face the reflective sheet 26 side.
  • the light generated from the LED unit 32 enters the light entrance surface 20 a of the light guide plate 20 and exits from the light exit surface 20 b facing the lens sheet 18 a,
  • the liquid crystal panel 16 is irradiated from the back side.
  • the optical member 18 is formed by laminating a lens sheet 18a and a reflective polarizing sheet 18b in order from the light guide plate 20 side.
  • the lens sheet 18a has a function of refracting the light emitted from the light exit surface 20b of the light guide plate 20 toward the display surface side of the liquid crystal panel 16, and has a plurality of mountain shapes formed of two inclined surfaces in a cross-sectional view. It is formed from a prism lens. These prism lenses are formed by generating a UV curable resin or thermosetting resin on a PET film. Alternatively, it is formed by extruding an AS material, a PC material, a PMMA material, or the like.
  • the reflective polarizing sheet 18b has a function of improving luminance without impeding the viewing angle by polarizing light and transmitting only the p-wave and reflecting the s-wave.
  • a plurality of spherical beads (an example of a granular material) 34 capable of diffusing the light transmitted through the lens sheet 18a are arranged on the surface of the lens sheet 18a. Therefore, the plurality of beads 34 have a spherical surface on the front side (the side opposite to the side facing the lens sheet 18a).
  • These beads 34 are made of a resin material such as acrylic or PC, and are dispersed on the two inclined surfaces of each prism lens forming the lens sheet 18a by being coated on the surface of the lens sheet 18a. It is arranged.
  • the lens interval W between the prism lenses (the interval between the apexes of adjacent prism lenses each forming a mountain shape, see FIG. 4) is in the range of 30 ⁇ m to 300 ⁇ m.
  • the particle size of each bead 34 is smaller than the lens interval W of the lens sheet 18a. Specifically, the particle size of each bead 34 is in the range of 1/3 to 1/80 of the lens interval W.
  • the prism lens constituting the lens sheet 18a is formed, UV curable resin, thermosetting resin, or the like is applied as a binder to the surface of the prism lens, and beads 34 are dispersed on the surface.
  • the beads 34 can be coated and dispersed on the surface of the lens sheet 18a.
  • the beads 34 can be dispersed on the surface of the lens sheet 18a by kneading the beads 34 in the binder in advance and applying it to the surface of the prism lens.
  • the prism lens is formed of a curable resin
  • the beads 34 can be dispersed without using a binder by spreading and curing the beads 34 on the surface of the prism lens after the prism lens is formed and before curing. .
  • the light emitted from the light exit surface 20b of the light guide plate 20 is refracted to the display surface side of the liquid crystal panel 16 through the prism lens of the lens sheet 18a (see the one-dot chain line in FIG. 4). Since the beads 34 as described above are arranged on the surface of the lens sheet 18a, the light transmitted through the prism lens is diffused by the beads 34 to the reflective polarizing sheet 18b side (display surface side of the liquid crystal panel 16). Will be emitted. In this way, since the light transmitted through the prism lens is diffused, the appearance of the light on the display surface does not change greatly due to the difference in the viewing angle of the surface of the prism lens without providing a diffusion sheet. The glare on the lens surface is prevented from being seen from the display surface.
  • the light emitted from the light exit surface 20b of the light guide plate 20 and transmitted through the lens sheet 18a is diffused by the beads 34 toward the reflective polarizing sheet 18b. Even if a diffusion sheet is not provided on the side opposite to the light-emitting surface 20b of the light guide plate 20 of the sheet 18a (the liquid crystal panel 16 side), glare on the surface of the lens sheet 18a can be seen from the display surface. Can be prevented. Therefore, in the edge light type backlight device 24, the diffusion sheet can be eliminated while maintaining the display quality on the display surface of the liquid crystal panel 16, and the thickness and weight can be reduced. Furthermore, member cost can be reduced by eliminating the diffusion sheet.
  • the front side of the beads 34 (the side opposite to the side facing the lens sheet 18a, the liquid crystal panel 16 side) is a spherical surface. For this reason, the light emitted from the spherical surface is more easily spread than the light emitted from the aspherical surface, so that the light transmitted through the lens sheet 18 a can be effectively diffused by the beads 34.
  • the prism lens of the lens sheet 18a has a mountain shape in a cross-sectional view, and beads 34 are arranged on each of two inclined surfaces forming the mountain shape. Thereby, most of the light transmitted through the lens sheet 18a is transmitted through the beads 34, so that the light diffusion effect by the beads 34 can be enhanced.
  • the lens interval of the lens sheet 18a is in the range of 30 ⁇ m to 300 ⁇ m.
  • the lens interval W can be set to a realizable range, and a specific lens interval for preventing the prism lens twill from being seen from the display surface of the liquid crystal panel 16 can be realized.
  • the particle size of the beads 34 is smaller than the lens interval W of the lens sheet 18a.
  • the particle size of the beads 34 needs to be at least smaller than the lens interval W. According to the above configuration, the shape of the prism lens can be prevented from being hidden by the beads 34, and the function of the prism lens can be maintained even when the beads 34 are arranged on the surface.
  • a plurality of substantially hemispherical protrusions 134 integral with the lens sheet 118a are provided on the surface of the lens sheet 118a.
  • Each protrusion 134 has a substantially hemispherical shape protruding toward the front side (the reflective polarizing sheet 118b side).
  • These protrusions 134 perform the same effect as the beads (granular bodies) in the first embodiment. That is, the light transmitted through the lens sheet 118a is diffused toward the front side by transmitting through the protrusions 134.
  • the backlight device As described above, according to the backlight device according to the second embodiment, it is possible to form the granular material on the lens sheet 18a without using another member such as a bead, and to maintain the display quality on the display surface of the liquid crystal panel. However, the diffusion sheet can be abolished.
  • Embodiment 3 will be described with reference to the drawings.
  • the arrangement of the LED light source 228 and the LED substrate 230 is different from that of the first embodiment. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted. 6 and FIG. 7, the parts obtained by adding the numeral 200 to the reference numerals in FIG. 3 and FIG. 4 are the same as the parts described in the first embodiment.
  • the LED light source 228 and the LED substrate 230 are arranged on both side plates 222 b and 222 c on the long side of the chassis 222. Since the LED light source 228 and the LED substrate 230 are arranged in this manner, the light emitted from each LED light source 228 and guided through the light guide plate 220 is incident on the prism lens of the lens sheet 218a. Then, the light is refracted toward the display surface side of the liquid crystal panel 216 (see the dashed line in FIG. 7).
  • the LED light source 228 and the LED substrate 230 are arranged in this manner, the light transmitted through the lens sheet 118a is diffused by the beads 234, so that the display quality on the display surface of the liquid crystal panel 216 is improved.
  • the diffusion sheet can be abolished while maintaining.
  • Embodiment 4 will be described with reference to the drawings.
  • the fourth embodiment is different from the first embodiment in that the liquid crystal display device 310 does not include a cabinet. Since other configurations are the same as those of the liquid crystal display device 10 including the cabinet according to the first embodiment, the description thereof is omitted.
  • the main components are held between a frame 312 that forms the front side appearance and a chassis 322 that forms the back side appearance. It is supposed to be accommodated in the space.
  • Major components housed in the frame 312 and the chassis 322 include at least a liquid crystal panel 316, an optical member 318, a light guide plate 320, and an LED unit 332.
  • the liquid crystal panel 316, the optical member 318, and the light guide plate 320 are held in a state of being sandwiched between the front side frame 312 and the back side chassis 322 while being stacked on each other.
  • the LED unit 332 includes an LED light source 328, an LED substrate 330 on which the LED light source 328 is mounted, and a heat dissipation member 331 to which the LED substrate 330 is attached.
  • the optical member 318 is formed by laminating a lens sheet 318a and a reflective polarizing sheet 318b in order from the light guide plate 320 side.
  • a plurality of spherical beads 334 capable of diffusing light transmitted through the lens sheet 318a are disposed on the surface of the lens sheet 318a.
  • the light transmitted through the lens sheet 318a is diffused by the beads 334, so that the diffusion sheet is eliminated while maintaining the display quality on the display surface of the liquid crystal panel 316. can do.
  • each prism lens of the lens sheet has a mountain shape formed by two inclined surfaces
  • the configuration of the prism lens is not limited.
  • the size, shape, dispersion mode, dispersion method, and the like of the granular material can be appropriately changed.
  • the television receiver provided with the tuner is exemplified, but the present invention can also be applied to a display device that does not include the tuner.
  • TV TV receiver, Ca, Cb: cabinet, T: tuner, S: stand, 10, 210, 310: liquid crystal display, 12, 212: bezel, 14, 214, 312: frame, 16, 216, 316: Liquid crystal panel, 18, 118, 218, 318: optical member, 18a, 118a, 218a, 318a: lens sheet, 18b, 118b, 218b, 318b: reflective polarizing sheet, 20, 120, 220, 320: light guide plate, 22 222, 322: Chassis, 24, 224, 324: Backlight device, 26, 226: Reflective sheet, 28, 228, 328: LED light source, 32, 332: LED unit, 34, 234, 334: Beads, 134: Protrusion

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention porte sur un appareil de rétro-éclairage (24) qui est pourvu : d'une plaque de guidage de lumière (20), qui possède une surface d'entrée de lumière disposée sur une surface latérale, et une surface de sortie de lumière disposée sur une surface de plaque sur le côté avant; d'une source de lumière à diodes électroluminescentes, qui est disposée de façon à faire face à la surface d'entrée de lumière de la plaque de guidage de lumière (20); d'une feuille de lentilles transmettant la lumière (18a), qui est disposée sur le côté de surface de sortie de lumière de la plaque de guidage de lumière (20) et qui possède une lentille à prisme disposée sur une surface sur le côté envers de la surface faisant face à la surface de sortie de lumière; d'une pluralité de corps granuleux (34), qui sont disposés sur la lentille à prisme de la feuille de lentilles (18a) et qui diffusent une lumière qui a traversé la feuille de lentilles (18a).
PCT/JP2013/051255 2012-01-30 2013-01-23 Appareil d'éclairage, appareil d'affichage et récepteur de télévision WO2013115020A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012016271 2012-01-30
JP2012-016271 2012-01-30

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WO2013115020A1 true WO2013115020A1 (fr) 2013-08-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020007233A1 (fr) * 2018-07-05 2020-01-09 深圳创维－Rgb电子有限公司 Membrane composite et son procédé de conception

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098615A (ja) * 2007-06-08 2009-05-07 Hitachi Maxell Ltd 光学調製部材、それを用いた照明装置及び液晶表示装置
JP2009265318A (ja) * 2008-04-24 2009-11-12 Dainippon Printing Co Ltd 光学部材、面光源装置、透過型表示装置
JP2010085857A (ja) * 2008-10-01 2010-04-15 Hitachi Maxell Ltd 光学部材、それを用いた照明装置及び表示装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098615A (ja) * 2007-06-08 2009-05-07 Hitachi Maxell Ltd 光学調製部材、それを用いた照明装置及び液晶表示装置
JP2009265318A (ja) * 2008-04-24 2009-11-12 Dainippon Printing Co Ltd 光学部材、面光源装置、透過型表示装置
JP2010085857A (ja) * 2008-10-01 2010-04-15 Hitachi Maxell Ltd 光学部材、それを用いた照明装置及び表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020007233A1 (fr) * 2018-07-05 2020-01-09 深圳创维－Rgb电子有限公司 Membrane composite et son procédé de conception
US11947137B2 (en) 2018-07-05 2024-04-02 Shenzhen Skyworth-Rgb Electronic Co., Ltd Method for composite membrane and composite membrane

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