WO2016006025A1 - 光源装置及び表示装置 - Google Patents
光源装置及び表示装置 Download PDFInfo
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- WO2016006025A1 WO2016006025A1 PCT/JP2014/068058 JP2014068058W WO2016006025A1 WO 2016006025 A1 WO2016006025 A1 WO 2016006025A1 JP 2014068058 W JP2014068058 W JP 2014068058W WO 2016006025 A1 WO2016006025 A1 WO 2016006025A1
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- hole
- light
- light source
- source device
- edge
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/05—Optical design plane
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- 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
- G02F1/133603—Direct backlight with LEDs
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- 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
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- 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
Definitions
- the present invention relates to a light source device including a light emitting element mounted on one surface of a substrate, and a reflection sheet provided on the one surface and reflecting light from the light emitting element in a direction perpendicular to the one surface, and the light source device It is related with a display apparatus provided with.
- the liquid crystal display device (display device) is usually equipped with a backlight device that irradiates the display panel with light.
- a backlight device a so-called direct-type backlight device including a plurality of LEDs and a reflection sheet that reflects light emitted from the LEDs to the display panel side is known.
- Patent Document 1 includes an LED substrate, an LED light source disposed on the surface of the LED substrate, and a reflective sheet disposed on the surface side of the LED substrate and having a through hole.
- the reflective sheet penetrates through the through hole of the reflective sheet, and the reflective sheet is configured such that a part of the edge of the through hole is disposed between the light emitting surface of the LED light source and the LED substrate.
- a direct-type lighting device that can prevent or suppress the floating of the light is disclosed.
- the through hole is larger than the light output surface of the LED light source, and a part of the edge of the through hole is disposed between the light output surface of the LED light source and the LED substrate. This is a configuration.
- the position of the through hole is not aligned with the light exit surface of the LED light source and is shifted in the thickness direction of the LED substrate, and the light exit surface of the LED light source There are many areas where the reflection sheet is missing in the vicinity of. Therefore, there is a problem that uniform light reflection cannot be performed in the vicinity of the LED light source, resulting in uneven brightness.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a light emitting element mounted on one surface of a substrate and the light provided from the light emitting element on the one surface.
- a light source device including a reflective sheet that reflects in a direction perpendicular to the light emitting device, the light source device including a diffusion portion that is provided on a light exit surface side of the light emitting element and diffuses light from the light emitting element.
- the through-hole including a portion whose size is equal to or smaller than the size of the diffusion portion in the vertical direction, and the through-hole is provided at a position aligned with the diffusion portion in the vertical direction.
- a light source device includes: a light emitting element mounted on one surface of a substrate; and a reflection sheet provided on the one surface and reflecting light from the light emitting element in a direction perpendicular to the one surface.
- the light-emitting element includes a diffusing portion that is provided on the light-emitting surface side of the light-emitting element and diffuses light from the light-emitting element, and the reflective sheet has a dimension between opposing edges equal to or smaller than the size of the diffusing portion in the vertical direction.
- the through hole is provided at a position aligned with the diffusion portion in the vertical direction.
- the through-hole of the reflection sheet has a portion that is not larger than the size of the diffusion portion in the vertical direction, and the through-hole, that is, the chip of the reflection sheet is not in the vertical direction. Since the reflection sheet is configured to reduce protrusion from the outer edge of the diffusion portion, the reflection sheet is prevented from floating from the one surface of the substrate in the vicinity of the through-hole, and the reflection sheet is broken. The occurrence of uneven brightness can be suppressed.
- the light source device according to the present invention is characterized in that a cut is formed in a peripheral portion of the through hole.
- a cut is formed in the peripheral portion of the through hole to facilitate the deformation of the through hole.
- the through hole is circular, and a plurality of the cuts are formed along a radial direction of the through hole apart from an edge of the through hole and symmetrical with respect to the through hole. It is characterized by being arranged in.
- a plurality of the cuts are formed along the radial direction of the through hole apart from the circular edge of the through hole, and the free deformation of the through hole is limited to some extent. Both the ease of deformation of the through hole and the restoration to the original shape are achieved.
- the light source device is characterized in that the through hole has an elliptical shape, and the major axis dimension is larger than the maximum dimension of the outer edge of the diffusion portion in the vertical direction, and the minor axis dimension is smaller. .
- the relative movement of the diffusion part in the long diameter direction of the through hole since the dimension of the short diameter of the through hole is smaller than the maximum dimension of the outer edge of the diffusion part in the vertical direction, the relative movement of the diffusion part in the long diameter direction of the through hole. Suppress.
- the light source device according to the present invention is characterized in that the cut is formed along the edge away from the edge of the through hole.
- the cut is formed along the edge away from the edge of the through hole, and by restricting the free deformation of the through hole to some extent, the ease of deformation of the through hole and Together with restoring to the original shape.
- the light source device is characterized in that a crease is formed along the edge of the through hole at the peripheral edge of the through hole.
- the edge side of the through hole is easily deformed in the vertical direction with respect to the fold, so that the periphery of the through hole including the through hole is formed. Deformation becomes easier.
- a display device includes the light source device according to any one of the above-described inventions, and a display panel that displays an image using light from the light source device.
- the light emitted from the light source of the light source device is emitted to the display panel, and the display panel displays an image using the light.
- the present invention it is possible to prevent the reflection sheet from floating from one surface of the substrate on which the light emitting element is mounted, and to reduce the area where the reflection sheet is missing in the vicinity of the diffusion portion. It is possible to suppress the occurrence of luminance unevenness due to the floating of the light and the chipping of the reflection sheet.
- FIG. 6 is a cross-sectional view taken along line AA in FIG. 5.
- FIG. 1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention
- FIG. 2 is an exploded view showing a main configuration of the television receiver according to Embodiment 1 of the present invention. It is a perspective view.
- Reference numeral 100 in the figure denotes a television receiver.
- the television receiver 100 includes a liquid crystal display unit B, front and back cabinets C and D that are accommodated so as to sandwich the liquid crystal display unit B, and a stand E.
- the liquid crystal display unit B has a horizontally long rectangular shape (rectangular shape) as a whole and is accommodated in a vertically placed state.
- the liquid crystal display unit B includes a liquid crystal panel H that is a display panel and a light source device A, and the liquid crystal panel H and the backlight device A are integrated with a frame-like bezel J or the like. It is supposed to be retained.
- FIG. 3 is a cross-sectional view showing the main configuration of the television receiver 100 according to Embodiment 1 of the present invention
- FIG. 4 shows the light source device A of the television receiver 100 according to Embodiment 1 of the present invention
- FIG. 5 is a partial perspective view showing a configuration of a light source unit of the television receiver 100 according to Embodiment 1 of the present invention
- FIG. 6 is a sectional view taken along line AA in FIG.
- a television receiver 100 according to Embodiment 1 of the present invention includes a display unit 70 (liquid crystal panel H) having a display surface for displaying an image on the front side, and a light source unit arranged on the rear side of the display unit 70. 10 and a cabinet 71 (C, D) that conceals the peripheral portion of the display unit 70 and the rear side of the light source device A.
- a display unit 70 liquid crystal panel H
- a light source unit arranged on the rear side of the display unit 70. 10
- a cabinet 71 C, D
- the display unit 70 includes a display panel 72 having a display surface and an optical sheet 73 disposed on the rear side of the display panel 72.
- the peripheral portion of the display panel 72 is held in a front-rear manner by a front holding frame body 74 and a rear holding frame body 75, and the rear holding frame body 75 is attached to a peripheral portion of the backlight chassis 6 described later. Yes.
- the optical sheet 73 has a configuration in which a relatively thick diffuser plate that diffuses light emitted from a light source and a relatively thin synthetic resin sheet such as a reflective polarizing plate, a prism sheet, and a diffuser sheet are laminated. .
- the backlight chassis 6 has a plate portion 61 and a frame portion 62 connected to the periphery of the plate portion 61, and the frame portion 62 supports the peripheral portion of the diffusion plate of the optical sheet 73.
- the cabinet 71 includes a cabinet front part 71a that conceals the front side of the peripheral part of the display unit 70, and a deep dish-shaped cabinet rear part 71b that conceals the peripheral part and the rear side of the light source unit 10.
- the light chassis 6 is attached to the frame portion 62 with male screws.
- the light source device A includes a plurality of light source units 10.
- the light source unit 10 is mounted on the rear side of the display unit 70, and is mounted with a plurality of light emitting diodes 1 juxtaposed like a grid and the light emitting diodes 1 arranged in parallel on one surface 2a.
- the light source device A has a through hole 41 disposed between the lens 3 and the one surface 2a of the substrate 2, and includes a reflection sheet 4 that reflects light emitted from the light emitting diode 1 toward the display unit 70 side. . Further, the light source device A includes a connector 5 that electrically connects the light source units 10 to each other and a backlight chassis 6 that holds the light source unit 10. The reflection sheet 4 is placed on the one surface 2 a of the substrate 2 of the light source unit 10.
- the light source unit 10 includes, for example, two types in which five light emitting diodes 1 are mounted in a row and six light emitting diodes 1 are mounted. These are arranged in a straight line in each longitudinal direction, and are connected by a connector 5.
- the plurality of light source units 10, 10,... 10 are attached to and held by the plate portion 61 of the backlight chassis 6.
- the substrate 2 has a strip shape as shown in FIGS. 4 and 5 and is juxtaposed on the one surface 6a of the backlight chassis 6 having a substantially rectangular shape, being appropriately separated in the longitudinal direction and the width direction.
- a plurality of light emitting diodes 1 are mounted on one surface 2a of the substrate 2 at appropriate intervals in the longitudinal direction.
- a plurality of latching portions 20, 20,... 20 for holding the light source unit 10 on the backlight chassis 6 are provided at a plurality of locations.
- the latching portion 20 is made of metal and can be elastically deformed.
- the backlight chassis 6 is formed by molding a metal plate, and has a flat plate portion 61 having a substantially rectangular shape and a frame portion continuous to the periphery of the plate portion 61, and the substrate 2 is mounted on one surface 6 a of the plate portion 61. It is accommodated and held side by side in the longitudinal and width directions.
- the backlight chassis 6 also serves as a heat radiating plate that radiates heat conducted from the light source unit 10 to the atmosphere.
- the plate portion 61 is provided with a plurality of latching slits 63 for latching the latching portions 20 of the substrate 2 at locations where the plate portion 2 comes into contact.
- the latching slit 63 has a long hole shape in which the longitudinal direction of the plate portion 61 is the major axis direction.
- the shape of the latching slit 63 is not limited to a long hole, but may be a slit shape extending in the longitudinal direction of the plate portion 61.
- the latching slit 63 constitutes an opening.
- a recess 64 having a latching slit 63 is formed on the one surface 6 a of the plate portion 61.
- the recessed portion 64 is recessed from the one surface 6a of the plate portion 61 toward the opposite side, has an opening on the one surface 6a side, and has a latching slit 63 on the bottom side.
- the opening of the recess 64 and the latching slit 63 are smaller than the dimension of the other surface 2 b of the substrate 2 in the short direction, and when the substrate 2 is held by the plate portion 61, the opening of the recess 64 is formed by the substrate 2.
- the latching slit 63 is comprised so that it may be covered.
- the concave portion 64 having the latching slit 63 has been described as an example.
- the present invention is not limited to this, and the concave portion 64 is omitted and only the latching slit 63 is provided. Also good.
- FIGS. 5 and 6 for example, five or six light emitting diodes 1 are mounted apart from each other in the longitudinal direction of the substrate 2, and the lens 3 corresponds to each of the light emitting diodes 1. Is provided on the light-emitting surface side of the light-emitting diode 1.
- the lens 3 is attached with an adhesive, for example.
- the lens 3 includes a light-transmitting portion 31 having a hemispherical shape for diffusing light emitted from the light-emitting diode 1 in all directions, and a cylindrical shape protruding from the periphery of the light-transmitting portion 31 along one surface 2 a of the substrate 2. And a circumferential portion 32.
- the circumferential portion 32 of the lens 3 has a circular shape when viewed from the direction perpendicular to the one surface 2a of the substrate 2 (hereinafter simply referred to as the vertical direction), and the area in the vertical direction is the same as or slightly larger than the through hole 41. . Further, the peripheral edge portion of the through hole 41 of the reflection sheet 4 is interposed between the lens 3 and the one surface 2 a of the substrate 2.
- the edge of the circumferential portion 32 is referred to as the outer edge of the lens 3 in the vertical direction.
- the reflection sheet 4 has a high reflectivity and is made of a single synthetic resin sheet having a substantially rectangular shape corresponding to the backlight chassis 6, and a through hole 41 is provided at a position corresponding to each lens 3.
- a second through hole 42 is formed at a location corresponding to each connector 5, and the second through hole 42 has a substantially rectangular shape.
- the through-hole 41 has a shape that follows the shape of the lens 3 viewed from the vertical direction.
- the through hole 41 has a circular shape and has the same or slightly smaller diameter as the outer edge of the lens 3. Further, the through hole 41 is disposed so as to be aligned with the position of the lens 3 in the vertical direction.
- the through hole 41 is configured to fit within the outer edge of the lens 3 and not to protrude from the outer edge of the lens 3.
- the size (area) of the through hole 41 of the reflection sheet 4 is the shape of the lens 3 in the vertical direction (hereinafter simply referred to as the lens 3). Is the same as or slightly smaller. Therefore, when assembling the television receiver 100 according to Embodiment 1 of the present invention, the operator may press the reflecting sheet 4 down to the substrate 2 side with the through hole 41 aligned with the position of the lens 3. At this time, since the through hole 41 is appropriately deformed and passes through the lens 3, the reflection sheet 4 can be laid on the one surface 2 a of the substrate 2 (the plate portion 61 of the backlight chassis 6).
- the television receiver 100 according to Embodiment 1 of the present invention has the above-described configuration, it is possible to prevent the reflective sheet 4 from floating from the one surface 2a of the substrate 2. This will be described in detail below.
- the through hole 41 passes through the lens 3 by pushing down the reflection sheet 4 to the substrate 2 side, but the size (area) of the through hole 41 is originally smaller than the area related to the shape of the lens 3 (see FIG. 6). That is, when the reflection sheet 4 is laid, the edge portion related to the through hole 41 is interposed between the lens 3 and the substrate 2 and is located closer to the light emitting diode 1 at the center of the lens 3 than the outer edge of the lens 3. To do.
- the reflection sheet 4 can be prevented from being lifted with a simple configuration.
- the reflection sheet 4 is provided so that the through hole 41 is aligned with the position of the lens 3 in the vertical direction, the through hole 41 has the outer edge of the lens 3 in the vertical direction. Don't stick out.
- FIG. 7 is a schematic view partially showing the reflection sheet 4 in the television receiver 100 according to Embodiment 2 of the present invention.
- the lens 3 is indicated by a broken line in order to represent the positional relationship between the through hole 41 and the lens 3.
- the reflection sheet 4 is made of a single synthetic resin sheet having a high reflectivity and having a substantially rectangular shape corresponding to the backlight chassis 6. 41 is provided.
- the through-hole 41 has a circular shape that follows the shape of the lens 3 viewed from the vertical direction, and has the same or slightly smaller diameter as the outer edge of the lens 3. Further, the through hole 41 is disposed so as to be aligned with the position of the lens 3 in the vertical direction.
- the through hole 41 has a plurality of cuts 42 cut in the radial direction at the edge thereof.
- a plurality of cuts 42 are formed along the radial direction of the through hole 41 away from the periphery of the through hole 41, and the cuts 42 are symmetrically arranged with respect to the through hole 41 in the vertical direction in the drawing. Yes.
- the reflection sheet 4 since the reflection sheet 4 has the above-described configuration, deformation around the through hole 41 including the through hole 41 becomes easier. Therefore, the operator pushes down the reflection sheet 4 toward the substrate 2, passes the lens 3 through the through hole 41, and lays the reflection sheet 4 on the one surface 2 a of the substrate 2 (the plate portion 61 of the backlight chassis 6). Assembly work becomes easier.
- the hole edge portion a part of the edge portion of the through hole 41 of the reflection sheet 4 (hereinafter simply referred to as the hole edge portion) is turned up in the vertical direction and remains stuck on the lens 3. There is a fear. In such a case, the hole edge part of such a reflection sheet 4 becomes a shadow, and brightness nonuniformity arises.
- the cut 42 is formed away from the edge of the through hole 41, the deformation is limited to some extent. That is, when the through hole 41 passes through the lens 3 due to the cut 42, the through hole 41 is easily deformed. However, since the cut 42 is formed away from the edge of the through hole 41, the through hole 41 is formed in the lens 3. After passing through, it becomes easy to return to the original shape, and the above-mentioned problems do not occur.
- the television receiver 100 according to the third embodiment of the present invention has a configuration substantially similar to that of the first embodiment of the present invention, but differs in the configuration of the reflection sheet 4. This will be described in detail below.
- FIG. 8 is a schematic view partially showing the reflection sheet 4 in the television receiver 100 according to Embodiment 3 of the present invention.
- the reflection sheet 4 is made of a single synthetic resin sheet having a high reflectivity and having a substantially rectangular shape corresponding to the backlight chassis 6.
- 41A is provided.
- the lens 3 is indicated by a broken line in order to represent the positional relationship between the through hole 41 ⁇ / b> A and the lens 3.
- the through-hole 41A is formed to have an elliptical shape when viewed from the vertical direction.
- the through hole 41A has an elliptical shape having a major axis in the vertical direction as viewed in the drawing, and is arranged so as to be aligned with the position of the lens 3 in the vertical direction.
- the through-hole 41A has a larger major axis dimension and a smaller minor axis dimension than the maximum dimension of the outer edge of the lens 3 in the vertical direction. That is, the long diameter of the through hole 41A is larger than that of the lens 3, but the short diameter of the through hole 41A is the same as or slightly smaller than that of the lens 3.
- the reflection sheet 4 since the reflection sheet 4 has the above-described configuration, the interval between the edges of the long diameter of the through hole 41A is the distance of the lens 3 in the vertical direction. Smaller than outer edge dimension. Therefore, when the reflection sheet 4 is laid, the edge portion of the long diameter in the through hole 41 ⁇ / b> A is caught by the outer edge of the lens 3, so that the reflection sheet 4 is prevented from rising. Thus, in the television receiver 100 according to Embodiment 3 of the present invention, the reflection sheet 4 can be prevented from being lifted with a simple configuration.
- the reflection sheet 4 since the reflection sheet 4 has the above-described configuration, deformation around the through hole 41A including the through hole 41A becomes easier. Therefore, the assembling work in which the reflective sheet 4 is laid on the one surface 2a of the substrate 2 (the plate portion 61 of the backlight chassis 6) becomes easier.
- the short diameter of the through hole 41A is the same as or slightly smaller than that of the lens 3, so that the relative movement of the lens 3 in the long diameter direction is limited. Therefore, it is possible to prevent the through hole 41 (edge) from protruding from the outer edge of the lens 3 in the vertical direction as compared with the case where the movement in the major axis direction is free. Therefore, the problem that luminance unevenness occurs in the display panel 72 due to the presence of the portion without the reflection sheet 4 near the lens 3 can be reduced as much as possible.
- the through hole 41A compared with the prior art through hole having a larger diameter than the outer edge of the lens 3, the through hole 41A according to the present invention has the following characteristics. 1. Long hole direction: the diameter of the lens 3 ⁇ the long diameter of the through hole 41A ⁇ the diameter of the through hole of the prior art 2. Short hole direction: short diameter of the through hole 41A ⁇ the diameter of the lens 3 ⁇ the diameter of the through hole of the prior art
- the positional deviation between the lens 3 and the through-hole 41A does not occur in the vertical direction.
- the region on the long diameter side of the through hole 41A according to the present invention is improved against local luminance unevenness.
- FIG. 9 is a schematic view partially showing the reflection sheet 4 in the television receiver 100 according to Embodiment 4 of the present invention.
- the lens 3 is indicated by a broken line in order to represent the positional relationship between the through hole 41 ⁇ / b> A and the lens 3.
- the reflection sheet 4 is made of a single synthetic resin sheet having a high reflectivity and having a substantially rectangular shape corresponding to the backlight chassis 6. 41A is provided.
- the through hole 41A has an elliptical shape when viewed from the vertical direction, and is arranged so as to be aligned with the position of the lens 3 in the vertical direction.
- the through hole 41A has a plurality of cuts 42A formed along the shape of the edge thereof. More specifically, the cut 42A is formed, for example, away from an edge (hereinafter referred to as a long diameter edge) related to the long diameter of the through hole 41A and along the shape of the long diameter edge.
- the cut lines 42A are formed on both long-diameter edge sides of the through-hole 41A and are symmetrical to each other.
- the cut 42A is not limited to the above configuration, and the cut line 42A is separated from the short diameter edge, for example, on the edge (hereinafter referred to as a short diameter edge) side of the through hole 41A.
- the structure formed along the shape may be used.
- the present invention is not limited to this, and the through hole 41A may not be elliptical but may be circular, for example.
- the television receiver 100 according to Embodiment 4 of the present invention is more easily deformed around the through hole 41A including the through hole 41A because the reflective sheet 4 has the above-described configuration. Therefore, the operator pushes down the reflection sheet 4 to the substrate 2 side, passes the lens 3 through the through hole 41A, and lays the reflection sheet 4 on the one surface 2a of the substrate 2 (the plate portion 61 of the backlight chassis 6). Assembly work becomes easier.
- the television receiver 100 according to the fifth embodiment of the present invention has a configuration substantially similar to that of the first embodiment of the present invention, but differs in the configuration of the reflection sheet 4. This will be described in detail below.
- FIG. 10 is a schematic view partially showing the reflection sheet 4 in the television receiver 100 according to Embodiment 5 of the present invention.
- the reflection sheet 4 is made of a single synthetic resin sheet having a high reflectivity and having a substantially rectangular shape corresponding to the backlight chassis 6. 41 is provided.
- the lens 3 is indicated by a broken line in order to represent the positional relationship between the through hole 41 and the lens 3.
- the through hole 41 is formed to have a circular shape when viewed from the vertical direction, and is arranged so as to be aligned with the position of the lens 3 in the vertical direction.
- the through hole 41 is formed with a crease 43 having a shape following the shape at the edge thereof. More specifically, a crease 43 is formed along the edge at a position away from the edge of the through hole 41.
- the crease 43 has a circular shape whose diameter in the vertical direction is slightly smaller than that of the lens 3.
- the reflection sheet 4 since the reflection sheet 4 has the above-described configuration, the edge side portion of the through hole 41 is easily deformed in the vertical direction with respect to the fold 43. Therefore, deformation around the through hole 41 including the through hole 41 is easier, and an operator can more easily assemble the reflective sheet 4 on the one surface 2a of the substrate 2 (the plate portion 61 of the backlight chassis 6). It becomes easy.
- the television receiver 100 is not limited to the above description.
- the backlight chassis 6 is not assembled on the entire other surface (rear surface), but is assembled in such a manner that a part of the peripheral portion or the like is retained by a block or the like. Therefore, a predetermined device can be installed on the other surface side of the backlight chassis 6.
- the backlight chassis 6 generally has a plurality of through holes.
- the pressure reduction device / pressurizer is set on the other surface side of the backlight chassis 6 and the reflection sheet 4 is assembled in a state in which the pressure reduction device / pressurizer is operated. Is attracted to the backlight chassis 6 side, and the operation of passing the through holes 41 and 41A through the lens 3 becomes easier.
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Abstract
Description
図1は本発明の実施の形態1に係るテレビジョン受像機の概略構成を示す分解斜視図であり、図2は本発明の実施の形態1に係るテレビジョン受像機の要部構成を示す分解斜視図である。図中符号100はテレビジョン受像機を示す。
本発明の実施の形態2に係るテレビジョン受像機100は、本発明の実施の形態1と略同様の構成を有するが、反射シート4の構成において相違する。以下、詳しく説明する。図7は本発明の実施の形態2に係るテレビジョン受像機100において、反射シート4を部分的に示す概略図である。図7では、貫通孔41とレンズ3との位置関係を表すため、レンズ3を破線にて示している。
本発明の実施の形態3に係るテレビジョン受像機100は、本発明の実施の形態1と略同様の構成を有するが、反射シート4の構成において相違する。以下、詳しく説明する。図8は本発明の実施の形態3に係るテレビジョン受像機100において、反射シート4を部分的に示す概略図である。
1.長孔方向:レンズ3の直径<貫通孔41Aの長径≦従来技術の貫通孔の直径
2.短孔方向:貫通孔41Aの短径<レンズ3の直径<従来技術の貫通孔の直径
本発明の実施の形態4に係るテレビジョン受像機100は、本発明の実施の形態3と略同様の構成を有するが、反射シート4の構成において相違する。以下、詳しく説明する。図9は本発明の実施の形態4に係るテレビジョン受像機100において、反射シート4を部分的に示す概略図である。図9では、貫通孔41Aとレンズ3との位置関係を表すため、レンズ3を破線にて示している。
本発明の実施の形態5に係るテレビジョン受像機100は、本発明の実施の形態1と略同様の構成を有するが、反射シート4の構成において相違する。以下、詳しく説明する。図10は本発明の実施の形態5に係るテレビジョン受像機100において、反射シート4を部分的に示す概略図である。
一般に、バックライトシャーシ6は、他面(背面)全面を保持されるのではなく、周縁部等その一部がブロック等にて保持される形で組み立てが実施される。従って、バックライトシャーシ6の他面側に所定の装置を設置することが可能である。また、バックライトシャーシ6には、一般に複数の貫通孔が形成されている。
2 基板
2a 一面
3 レンズ
4 反射シート
41,41A 貫通孔
42,42A 切れ目
43 折り目
70 表示部
100 テレビジョン受像機
A 光源装置
Claims (7)
- 基板の一面に実装された発光素子と、前記一面上に設けられ、該発光素子からの光を前記一面に対して垂直方向に反射する反射シートとを備える光源装置において、
前記発光素子の出光面側に設けられ、該発光素子からの光を拡散させる拡散部を備え、
前記反射シートは、対向縁間の寸法が前記垂直方向での前記拡散部の大きさ以下である部分を含む貫通孔を有し、
前記垂直方向において前記貫通孔は前記拡散部と整合する位置に設けられていることを特徴とする光源装置。 - 前記貫通孔の周縁部に切れ目を形成してあることを特徴とする請求項1に記載の光源装置。
- 前記貫通孔は円形であり、
前記切れ目は、
前記貫通孔の縁から離れて、前記貫通孔の径方向に沿って複数形成され、
前記貫通孔に対して対称的に配置されていることを特徴とする請求項2に記載の光源装置。 - 前記貫通孔は、
楕円形であり、
前記垂直方向での前記拡散部の外縁の最大寸法より、長径の寸法が大きく、短径の寸法が小さいことを特徴とする請求項2に記載の光源装置。 - 前記切れ目は、前記貫通孔の縁から離れ、該縁に沿って形成されていることを特徴とする請求項2又は4に記載の光源装置。
- 前記貫通孔の周縁部に、該貫通孔の縁に沿って折り目を形成してあることを特徴とする請求項1に記載の光源装置。
- 請求項1から6の何れかに記載の光源装置と、
該光源装置からの光を用いて画像表示を行う表示パネルと
を備えることを特徴とする表示装置。
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JP2016532807A JP6240773B2 (ja) | 2014-07-07 | 2014-07-07 | 光源装置及び表示装置 |
CN201480078251.XA CN106233195A (zh) | 2014-07-07 | 2014-07-07 | 光源装置和显示装置 |
PCT/JP2014/068058 WO2016006025A1 (ja) | 2014-07-07 | 2014-07-07 | 光源装置及び表示装置 |
US15/300,462 US9904104B2 (en) | 2014-07-07 | 2014-07-07 | Light source device and display apparatus |
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PCT/JP2014/068058 WO2016006025A1 (ja) | 2014-07-07 | 2014-07-07 | 光源装置及び表示装置 |
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US (1) | US9904104B2 (ja) |
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Cited By (2)
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CN109917586A (zh) * | 2016-02-15 | 2019-06-21 | 船井电机株式会社 | 显示装置 |
JP2021057104A (ja) * | 2019-09-26 | 2021-04-08 | 船井電機株式会社 | 照明装置および表示装置 |
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WO2016068590A1 (en) * | 2014-10-31 | 2016-05-06 | Lg Electronics Inc. | Backlight unit and display device including backlight unit |
KR20210133552A (ko) * | 2020-04-29 | 2021-11-08 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 디스플레이 장치 |
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JP2013118117A (ja) * | 2011-12-05 | 2013-06-13 | Sharp Corp | 照明装置、表示装置、及びテレビ受信装置 |
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CN102884366B (zh) | 2010-06-02 | 2014-12-24 | 夏普株式会社 | 照明装置、显示装置以及电视接收装置 |
CN203349065U (zh) * | 2013-06-17 | 2013-12-18 | 南京中电熊猫液晶显示科技有限公司 | 一种直下式led背光模组 |
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- 2014-07-07 US US15/300,462 patent/US9904104B2/en active Active
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JP2013118055A (ja) * | 2011-12-01 | 2013-06-13 | Sharp Corp | 照明装置、表示装置、及びテレビ受信装置 |
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JP6240773B2 (ja) | 2017-11-29 |
US9904104B2 (en) | 2018-02-27 |
US20170153500A1 (en) | 2017-06-01 |
CN106233195A (zh) | 2016-12-14 |
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