WO2011001711A1 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- WO2011001711A1 WO2011001711A1 PCT/JP2010/053634 JP2010053634W WO2011001711A1 WO 2011001711 A1 WO2011001711 A1 WO 2011001711A1 JP 2010053634 W JP2010053634 W JP 2010053634W WO 2011001711 A1 WO2011001711 A1 WO 2011001711A1
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- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- bezel
- light emitting
- crystal display
- light
- Prior art date
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Classifications
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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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0085—Means for removing heat created by the light source from the package
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- 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
- G02F1/133628—Illuminating devices with cooling means
Definitions
- the present invention relates to a liquid crystal display device in which a liquid crystal panel and a lighting device are integrally assembled, and more particularly to a liquid crystal display device having a lighting device using a light emitting diode as a light source.
- liquid crystal display devices have been widely used in liquid crystal televisions, monitors, mobile phones and the like as flat panel displays having features such as thinness and light weight compared to conventional cathode ray tubes.
- a liquid crystal display device includes an illumination device that emits light and a liquid crystal panel that displays a desired image by acting as a shutter for light from a light source provided in the illumination device.
- an edge light type or a direct type is provided in which a linear light source composed of a cold cathode fluorescent tube or a hot cathode fluorescent tube is arranged on the side or the lower side of the liquid crystal panel.
- the cold cathode fluorescent tube as described above contains mercury and it is difficult to recycle the discarded cold cathode fluorescent tube. Therefore, an illumination device using a light emitting diode (LED) that does not use mercury as a light source has been developed and put into practical use.
- LED light emitting diode
- the illumination device usually three-color light emission that obtains white light using a white light emitting diode or emits light of each color of red (R), green (G), and blue (B).
- a diode is provided and white light is obtained by mixing these three colors of light and emitted as illumination light to the liquid crystal panel.
- the light emitting diode as described above has a problem that its life is likely to be shortened when the ambient temperature is high.
- a light emitting diode provided on a mounting surface side where a light emitting diode is mounted on a mounting substrate on which the light emitting diode is mounted, and this A metal film pattern is provided on the mounting surface side so as to surround a metal drive wiring for supplying a drive current to the substrate.
- a heat radiating metal film is formed on the back side of the mounting surface of the mounting substrate, and the metal film pattern and the heat radiating metal film are connected by metal through holes.
- a reflective metal plate provided below the light guide plate is extended, and the heat radiating metal film is brought into surface contact with the reflective metal plate.
- it has been possible to reduce the ambient temperature of the light emitting diode by extending the heat generated in the light emitting diode to the reflective metal plate, thereby extending the life of the light emitting diode.
- the heat generated in the light emitting diode cannot be sufficiently dissipated, and it may not be possible to prevent the life of the light emitting diode from being reduced.
- the back surface of the mounting substrate on which the light emitting diode is mounted is in surface contact with the reflective metal plate.
- this reflective metal plate is usually composed of a very thin metal plate (for example, a metal plate of 0.2 mm or less). For this reason, depending on the type of the light emitting diode, the number of installations, etc., heat radiation at the reflective metal plate becomes insufficient, and the ambient temperature of the light emitting diode may not be reduced appropriately. As a result, in the conventional liquid crystal display device, there is a possibility that the lifetime of the light emitting diode cannot be prevented from being reduced due to the temperature rise.
- a dedicated heat sink or a forced cooling structure such as a cooling fan may be provided, but this will significantly increase the cost of the liquid crystal display device. Another problem occurred.
- an object of the present invention is to provide a low-cost liquid crystal display device that can reliably prevent the lifetime of a light-emitting diode from being reduced due to a temperature rise.
- a liquid crystal display device includes a liquid crystal panel, an illumination device that irradiates the liquid crystal panel with illumination light, and an outer container that houses the liquid crystal panel and the illumination device.
- a liquid crystal display device, The lighting device includes a light emitting diode, a mounting substrate on which the light emitting diode is mounted, a light incident surface on which light from the light emitting diode is incident, and light emission that emits light incident from the light incident surface.
- a light guide plate that emits light from the light emitting surface to the liquid crystal panel side while guiding the light incident from the light incident surface in a predetermined propagation direction.
- the outer container includes a frame-like frame provided so as to surround the display surface of the liquid crystal panel, a bezel having a plurality of side surfaces provided around the frame, and the bezel. And a bottomed frame member having a bottom surface and a plurality of side walls provided around the bottom surface,
- the mounting substrate is attached to at least one side wall of the frame member such that the light emitting diode faces the light incident surface of the light guide plate, Between the side surface of the bezel and the side wall of the frame member, a heat conduction part for conducting heat generated in the light emitting diode from the frame member side to the bezel side is provided. is there.
- a bezel provided on the liquid crystal panel side and a frame member provided on the lighting device side are included as the outer container.
- a heat conducting portion that conducts heat generated by the light emitting diode from the frame member side to the bezel side is provided.
- the heat conducting unit is provided between a side wall to which the mounting substrate is attached and a side surface of the bezel facing the side wall.
- the heat generated in the light emitting diode can be efficiently transmitted to the bezel side, and the occurrence of a decrease in the life of the light emitting diode due to the temperature rise can be prevented more reliably.
- a protruding portion protruding toward the side wall so as to contact the side wall of the frame member may be used on the side surface of the bezel.
- the heat generated in the light emitting diode is transferred from the frame member side to the bezel side through the protrusion.
- a heat conducting member disposed between a side surface of the bezel and a side wall of the frame member may be used as the heat conducting unit.
- heat generated in the light emitting diode is transmitted from the frame member side to the bezel side through the heat conducting member.
- the mounting substrate is provided with a plurality of light emitting diodes in a straight line
- the bezel and the frame member are configured such that a claw portion provided on a side surface of the bezel and a hole portion provided in a side wall of the frame member facing the side surface are fitted to each other.
- the hole is provided so as to be disposed between two adjacent light emitting diodes with respect to a side wall to which the mounting substrate is attached.
- the mounting substrate may be attached to a side wall of the frame member by a double-sided tape having thermal conductivity.
- the mounting work of the mounting board on the side wall of the frame member can be easily simplified.
- the present invention it is possible to provide a low-cost liquid crystal display device that can surely prevent the lifetime of the light-emitting diode from being reduced due to a temperature rise.
- FIG. 1 is an exploded perspective view illustrating the configuration of the liquid crystal display device according to the first embodiment of the present invention.
- FIG. 2 is a plan view illustrating a configuration of a main part of the liquid crystal display device.
- FIG. 3 is a cross-sectional view for explaining the main configuration of the liquid crystal display device.
- FIG. 4 is a perspective view for explaining a main configuration of the bezel shown in FIG.
- FIG. 5 is a plan view for explaining a main configuration of a liquid crystal display device according to the second embodiment of the present invention.
- 6 (a) and 6 (b) are a perspective view and a plan view, respectively, for explaining a main part configuration of the bezel shown in FIG. 5, and
- FIGS. 6 (c) and 6 (d) are respectively diagrams.
- FIG. 1 is an exploded perspective view illustrating the configuration of the liquid crystal display device according to the first embodiment of the present invention.
- FIG. 2 is a plan view illustrating a configuration of a main part of the liquid crystal display
- FIG. 6B is a sectional view taken along line VIc-VIc and a sectional view taken along line VId-VId.
- FIG. 7 is a plan view for explaining the main configuration of a liquid crystal display device according to the third embodiment of the present invention.
- FIG. 8 is a cross-sectional view illustrating a configuration of a main part of the liquid crystal display device illustrated in FIG.
- FIG. 1 is an exploded perspective view illustrating the configuration of the liquid crystal display device according to the first embodiment of the present invention.
- the liquid crystal display device 1 of the present embodiment is provided with a liquid crystal panel 2 as a display unit for displaying information, and an illumination device 3 for irradiating the liquid crystal panel 2 with illumination light. 2 and the illumination device 3 are integrated as a transmissive liquid crystal display device 1. That is, the liquid crystal display device 1 includes a bezel 4 and a frame 5 provided on the liquid crystal panel 2 side and the lighting device 3 side as outer containers for housing the liquid crystal panel 2 and the lighting device 3, respectively. 1 are housed in a state where the constituent members of the liquid crystal display device 1 shown in FIG.
- the bezel 4 includes a frame-shaped frame 4a provided so as to surround the display surface of the liquid crystal panel 2, and four side surfaces 4b, 4c, 4d, and 4e provided around the frame 4a. .
- the frame 4a is configured so that the display surface of the liquid crystal panel 2 can be visually recognized, and an opening described later is defined by the frame 4a.
- a protruding portion 14 as a heat conducting portion is formed on the side surface 4b.
- the frame 5 is a bottomed frame member configured to be included in the bezel 4, and includes a bottom surface 5a that forms the bottom of the outer container.
- the frame 5 includes four side walls 5b, 5c, 5d, and 5e provided around the bottom surface 5a. These side walls 5b to 5e respectively face the side surfaces 4b to 4e inside the side surfaces 4b to 4e of the bezel 4 when the bezel 4 and the frame 5 are integrally assembled to form the outer container.
- a mounting substrate 9 on which a plurality of (for example, 22) light emitting diodes 8 are linearly mounted is fixed to the side wall 5 b, and the heat generated in the light emitting diodes 8 through the protrusions 14 is bezeled. It is configured to transmit to the 4 side (details will be described later).
- the liquid crystal panel 2 includes an active matrix substrate, a counter substrate, and a liquid crystal layer sandwiched between these substrates, and a plurality of pixels are provided on the display surface (not shown). ). Further, a printed circuit board 7 is connected to the liquid crystal panel 2 via a flexible printed circuit board 6. For example, a source driver and a gate driver are installed on the printed circuit board 7 (not shown). In the liquid crystal panel 2, the liquid crystal layer is driven pixel by pixel by the source driver and the gate driver. ing. Further, a frame-shaped plastic frame 13 is arranged outside the outer periphery of the liquid crystal panel 2, and the liquid crystal panel 2 is placed on the outer container at a predetermined position in the outer container by the plastic frame 13. It is configured to be assembled.
- the illumination device 3 includes an optical sheet 10 and a light guide plate 11 and a reflection sheet 12 that are sequentially provided below the optical sheet 10.
- the optical sheet 10 includes a polarizing sheet, a prism (light condensing) sheet, and / or a diffusion sheet, and the display performance of the liquid crystal panel 2 is improved by appropriately increasing the luminance of the illumination light. It has become.
- the light guide plate 11 is disposed so as to face the light emitting diode 8, and receives light from the light emitting diode 8 to emit light toward the liquid crystal panel 2 (details will be described later).
- the reflection sheet 12 is attached on the bottom surface 5a of the frame 5, and reflects the light of the light emitting diode 8 toward the liquid crystal panel 2.
- FIG. 2 is a plan view for explaining the configuration of the main part of the liquid crystal display device.
- FIG. 3 is a cross-sectional view for explaining the main configuration of the liquid crystal display device.
- FIG. 4 is a perspective view for explaining a main configuration of the bezel shown in FIG.
- a mounting substrate 9 on which the light emitting diodes 8 are mounted is attached to the inner surface of the side wall 5b of the frame 5 by a heat conductive double-sided tape 15 which is a heat conductive double-sided tape.
- a plurality of, for example, 22 light emitting diodes 8 are arranged on the mounting surface of the mounting substrate 9 in a state in which the light emitting diodes 8 are arranged in a straight line. It is attached to the inner surface of the side wall 5b of the frame 5 with a gap therebetween.
- a 3 in 1 type that integrates red (R), green (G), and blue (B) RGB light emitting diodes is used for each of these light emitting diodes 8. It arrange
- the light guide plate 11 has a light emitting surface 11b that emits light from the light emitting diode 8 that is incident from the light incident surface 11a, and the light from the light emitting diode 8 that is incident from the light incident surface 11a is a predetermined light.
- Light is emitted from the light emitting surface 11b to the liquid crystal panel 2 side while being guided in the propagation direction (left direction in FIG. 2).
- the liquid crystal panel 2 is disposed at a predetermined height position from the optical sheet 10 by the plastic frame 13, and the display surface of the liquid crystal panel 2 is visible.
- the display surface is arranged below the opening A surrounded by the frame 4a of the bezel 4.
- the side surface 4 b of the bezel 4 is formed with a protruding portion 14 that protrudes toward the side wall 5 b so as to contact the side wall 5 b of the frame 5.
- This protrusion 14 is provided by, for example, drawing, and constitutes a heat conducting portion that conducts heat generated by the light emitting diode 8 from the frame 5 side to the bezel 4 side.
- the projecting portion 14 comes into contact with the outer surface of the side wall 5 b of the frame 5.
- the heat generated in the light emitting diode 8 is transmitted to the bezel 4 side via the mounting substrate 9, the thermally conductive double-sided tape 15, the side wall 5 b of the frame 5, and the protrusion 14.
- a bezel 4 provided on the liquid crystal panel 2 side and a frame (frame member) 5 provided on the lighting device 3 side are provided.
- a protrusion 14 is provided between the side surface 4 b of the bezel 4 and the side wall 5 b of the frame 5, as a heat conducting portion that conducts heat generated in the light emitting diode 8 from the frame 5 side to the bezel 4 side. .
- heat generated by the light emitting diode 8 can be efficiently transmitted to the bezel 4 provided on the liquid crystal panel 2 side while suppressing an increase in cost of the liquid crystal display device 1.
- the heat radiation area of the heat generated in the light emitting diode 8 can be easily increased.
- FIG. 5 is a plan view for explaining a main configuration of a liquid crystal display device according to the second embodiment of the present invention.
- 6 (a) and 6 (b) are a perspective view and a plan view, respectively, for explaining a main part configuration of the bezel shown in FIG. 5, and FIG. 6 (c) and FIG. 6 (d) are respectively diagrams.
- FIG. 6B is a sectional view taken along line VIc-VIc and a sectional view taken along line VId-VId.
- the main difference between the present embodiment and the first embodiment is that a claw portion is provided on the side surface of the bezel and a hole portion is provided on the side wall of the frame facing the side surface. And the hole are fitted to each other.
- symbol is attached
- each protrusion 16 constitutes a heat conducting portion that conducts heat generated by the light emitting diode 8 from the frame 5 side to the bezel 4 side, as in the first embodiment. That is, each protrusion 16 is provided by drawing, for example, and protrudes toward the side wall 5b so as to abut on the side wall 5b of the frame 5.
- each claw part 17 is provided by, for example, drawing processing, like each projection part 16.
- claw part 17 is formed so that it may protrude in the side wall 5b side rather than the projection part 16 shown in FIG.6 (c), as shown in FIG.6 (d).
- claw part 17 fits in the hole 5f (FIG. 5) provided in the side wall 5b to which the mounting substrate 9 of the flame
- each hole 5f is provided on the side wall 5b so as to be disposed between two adjacent light emitting diodes 8 on the side wall 5b to which the mounting substrate 9 is attached.
- the present embodiment can achieve the same operations and effects as the first embodiment. That is, in the liquid crystal display device 1 of the present embodiment, the protrusion 16 as the heat conducting portion is provided on the side surface 4b of the bezel 4 so as to contact the side wall 5b of the frame 5, so Can be transmitted from the frame 5 side to the bezel 4 side through the protrusion 16.
- the hole 5f is provided between the two light emitting diodes 8 adjacent to the side wall 5b to which the mounting substrate 9 is attached. Therefore, it is possible to prevent a decrease in heat conduction efficiency from the frame 5 side to the bezel 4 side of the heat generated in the light emitting diode 8.
- FIG. 7 is a plan view for explaining the main configuration of a liquid crystal display device according to the third embodiment of the present invention.
- FIG. 8 is a cross-sectional view illustrating a configuration of a main part of the liquid crystal display device illustrated in FIG.
- the main difference between the present embodiment and the first embodiment is that a heat conducting member is used as the heat conducting portion.
- symbol is attached
- the heat conducting member 18 is disposed between the side surface 4 b of the bezel 4 and the side wall 5 b of the frame 5.
- a heat conductive double-sided tape or a heat conductive sheet having heat conductivity is used for the heat conductive member 18.
- the heat conductive member 18 is generated by the light emitting diode 8 from the frame 5 side to the bezel 4 side. It constitutes a heat conducting part that conducts heat.
- the present embodiment can achieve the same operations and effects as the first embodiment. That is, in the liquid crystal display device 1 of the present embodiment, the heat conducting member 18 disposed between the side surface 4b of the bezel 4 and the side wall 5b of the frame 5 is used as the heat conducting portion. The generated heat can be transferred from the frame 5 side to the bezel 4 side through the heat conducting member 18.
- the liquid crystal display device of the present invention is not limited to this, for example, a transflective liquid crystal display device. Can also be applied.
- the protrusion or the heat conducting member as the heat conducting portion is provided between the side wall of the frame (frame member) to which the mounting substrate is attached and the side surface of the bezel facing the side wall.
- the heat conduction part of the present invention is provided between the side surface of the bezel and the side wall of the frame member, and can be installed at any place and number as long as it conducts heat generated by the light emitting diode from the frame member side to the bezel side.
- the shape and the like are not limited to those described above.
- the shape may be provided between the side wall of the frame member to which the mounting substrate is not attached and the side surface of the bezel facing the frame member.
- the case where the heat conducting portion is provided between the side wall of the frame member to which the mounting substrate is attached and the side surface of the bezel facing the side wall occurs in the light emitting diode. It is preferable in that heat can be efficiently transmitted to the bezel side, and a reduction in the lifetime of the light emitting diode due to a temperature rise can be prevented more reliably.
- the frame member may be a bezel having a plurality of (for example, two) side surfaces and a plurality of (for example, two) side walls.
- the mounting board on which the light emitting diode is mounted is attached to one of the four side walls in the frame (frame member) is described.
- the light-emitting diode may be attached to at least one side wall of the frame member so as to face the light incident surface of the light guide plate.
- the mounting substrate is attached to the side wall of the frame (frame member) using the heat conductive double-sided tape (double-sided tape having heat conductivity) has been described.
- the present invention is limited to this.
- a configuration in which a thermally conductive sheet is interposed between the mounting substrate and the side wall of the frame member and the mounting substrate is attached to the side wall using screws may be used.
- the case of using the double-sided tape having thermal conductivity simplifies the mounting work of the mounting board to the side wall of the frame member, compared to the case of using screws or the like. This is preferable because it can be easily achieved.
- the present invention uses a plurality of light emitting diodes that emit light of a plurality of colors that can be mixed with white. If it is a thing, it will not be limited at all. Specifically, a so-called four-in-one (4in1) type light emitting diode in which RGBW light emitting diodes are integrated is applied, or two types of light emitting diodes that emit yellow light and blue light are used. You can also. Also, three light emitting diodes in which RGB light emitting diodes are configured separately from each other can be used.
- the present invention is useful for a low-cost liquid crystal display device that can reliably prevent the life of the light-emitting diode from being reduced due to a temperature rise.
Abstract
Description
前記照明装置には、発光ダイオードと、前記発光ダイオードが実装された実装基板と、前記発光ダイオードの光が入光される入光面、及び前記入光面から入光された光を発光する発光面を有し、前記入光面から入光された光を所定の伝搬方向に導きつつ、前記発光面から光を前記液晶パネル側に出射する導光板とが設けられ、
前記外容器には、前記液晶パネルの表示面を囲むように設けられた額縁状の枠体及び前記枠体の周囲に設けられた複数の側面を有するベゼルと、前記ベゼルに対して内包されるように構成されるとともに、底面及び前記底面の周囲に設けられた複数の側壁を有する有底状のフレーム部材とが含まれ、
前記実装基板は、前記発光ダイオードが前記導光板の前記入光面に対向するように、前記フレーム部材の少なくとも1つの側壁に取り付けられ、
前記ベゼルの側面と前記フレーム部材の側壁との間には、前記フレーム部材側から前記ベゼル側に前記発光ダイオードで生じた熱を伝導する熱伝導部が設けられていることを特徴とするものである。
前記ベゼルと前記フレーム部材とは、前記ベゼルの側面に設けられたツメ部と、当該側面に対向する前記フレーム部材の側壁に設けられた孔部とが互いに嵌合するように構成され、
前記フレーム部材では、前記実装基板が取り付けられた側壁に対し、隣接する2個の前記発光ダイオードの間に配置されるように、前記孔部を設けていることが好ましい。
図1は、本発明の第1の実施形態にかかる液晶表示装置の構成を説明する分解斜視図である。図1において、本実施形態の液晶表示装置1では、情報を表示する表示部としての液晶パネル2と、液晶パネル2に照明光を照射する照明装置3とが設けられており、これらの液晶パネル2と照明装置3とが透過型の液晶表示装置1として一体化されている。すなわち、液晶表示装置1は、液晶パネル2及び照明装置3を収容する外容器として、液晶パネル2側及び照明装置3側にそれぞれ設けられたベゼル4及びフレーム5を備えており、これらのベゼル4及びフレーム5の間に図1に示した液晶表示装置1の構成部材が互いに重ね合わされた状態で収容されている。
図5は、本発明の第2の実施形態にかかる液晶表示装置の要部構成を説明する平面図である。図6(a)及び図6(b)は、それぞれ図5に示したベゼルの要部構成を説明する斜視図及び平面図であり、図6(c)及び図6(d)は、それぞれ図6(b)のVIc-VIc線断面図及びVId-VId線断面図である。図において、本実施形態と上記第1の実施形態との主な相違点は、ベゼルの側面にツメ部を設けるとともに、当該側面に対向するフレームの側壁に孔部を設けて、これらのツメ部と孔部とを互いに嵌合させた点である。なお、上記第1の実施形態と共通する要素については、同じ符号を付して、その重複した説明を省略する。
図7は、本発明の第3の実施形態にかかる液晶表示装置の要部構成を説明する平面図である。図8は、図7に示した液晶表示装置の要部構成を説明する断面図である。図において、本実施形態と上記第1の実施形態との主な相違点は、熱伝導部として、熱伝導部材を用いた点である。なお、上記第1の実施形態と共通する要素については、同じ符号を付して、その重複した説明を省略する。
2 液晶パネル
3 照明装置
4 ベゼル(外容器)
4a 枠体
4b~4e 側面
5 フレーム(外容器、フレーム部材)
5a 底面
5b~5e 側壁
5f 孔部
8 発光ダイオード
9 実装基板
11 導光板
11a 入光面
11b 発光面
14、16 突起部(熱伝導部)
15 熱伝導性両面テープ
17 ツメ部
18 熱伝導部材(熱伝導部)
Claims (6)
- 液晶パネルと、前記液晶パネルに照明光を照射する照明装置と、前記液晶パネル及び前記照明装置を収容する外容器とを備えた液晶表示装置であって、
前記照明装置には、発光ダイオードと、前記発光ダイオードが実装された実装基板と、前記発光ダイオードの光が入光される入光面、及び前記入光面から入光された光を発光する発光面を有し、前記入光面から入光された光を所定の伝搬方向に導きつつ、前記発光面から光を前記液晶パネル側に出射する導光板とが設けられ、
前記外容器には、前記液晶パネルの表示面を囲むように設けられた額縁状の枠体及び前記枠体の周囲に設けられた複数の側面を有するベゼルと、前記ベゼルに対して内包されるように構成されるとともに、底面及び前記底面の周囲に設けられた複数の側壁を有する有底状のフレーム部材とが含まれ、
前記実装基板は、前記発光ダイオードが前記導光板の前記入光面に対向するように、前記フレーム部材の少なくとも1つの側壁に取り付けられ、
前記ベゼルの側面と前記フレーム部材の側壁との間には、前記フレーム部材側から前記ベゼル側に前記発光ダイオードで生じた熱を伝導する熱伝導部が設けられている、
ことを特徴とする液晶表示装置。 - 前記熱伝導部は、前記実装基板が取り付けられた側壁と、当該側壁に対向する前記ベゼルの側面との間に設けられている請求項1に記載の液晶表示装置。
- 前記熱伝導部として、前記ベゼルの側面には、前記フレーム部材の側壁に当接するように、当該側壁側に突出された突起部が用いられている請求項1または2に記載の液晶表示装置。
- 前記熱伝導部として、前記ベゼルの側面と前記フレーム部材の側壁との間に配置された熱伝導部材が用いられている請求項1~3のいずれか1項に記載の液晶表示装置。
- 前記実装基板には、複数の前記発光ダイオードが直線状に設けられ、
前記ベゼルと前記フレーム部材とは、前記ベゼルの側面に設けられたツメ部と、当該側面に対向する前記フレーム部材の側壁に設けられた孔部とが互いに嵌合するように構成され、
前記フレーム部材では、前記実装基板が取り付けられた側壁に対し、隣接する2個の前記発光ダイオードの間に配置されるように、前記孔部を設けている請求項1~4のいずれか1項に記載の液晶表示装置。 - 前記実装基板は、熱伝導性を有する両面テープによって、前記フレーム部材の側壁に取り付けられている請求項1~5のいずれか1項に記載の液晶表示装置。
Priority Applications (6)
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RU2011146532/28A RU2011146532A (ru) | 2009-07-02 | 2010-03-05 | Жидкокристаллическое устройство отображения |
EP10793882A EP2434332A4 (en) | 2009-07-02 | 2010-03-05 | LIQUID CRYSTAL DISPLAY APPARATUS |
CN2010800298839A CN102472909A (zh) | 2009-07-02 | 2010-03-05 | 液晶显示装置 |
US13/320,917 US20120099045A1 (en) | 2009-07-02 | 2010-03-05 | Liquid crystal display apparatus |
BRPI1015583A BRPI1015583A2 (pt) | 2009-07-02 | 2010-03-05 | aparelho de tela de cristal líquido |
JP2011520806A JP5285153B2 (ja) | 2009-07-02 | 2010-03-05 | 液晶表示装置 |
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JP2009-157778 | 2009-07-02 | ||
JP2009157778 | 2009-07-02 |
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US (1) | US20120099045A1 (ja) |
EP (1) | EP2434332A4 (ja) |
JP (1) | JP5285153B2 (ja) |
CN (1) | CN102472909A (ja) |
BR (1) | BRPI1015583A2 (ja) |
RU (1) | RU2011146532A (ja) |
WO (1) | WO2011001711A1 (ja) |
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WO2013177820A1 (zh) * | 2012-05-30 | 2013-12-05 | 深圳市华星光电技术有限公司 | 显示装置、背光模组及其框架单元 |
JP2014006362A (ja) * | 2012-06-22 | 2014-01-16 | Japan Display Inc | 液晶表示装置 |
KR101601633B1 (ko) * | 2014-10-31 | 2016-03-10 | 희성전자 주식회사 | 백라이트 장치 |
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JP2013101203A (ja) * | 2011-11-08 | 2013-05-23 | Funai Electric Co Ltd | 表示装置およびテレビジョン装置 |
JP6236843B2 (ja) | 2013-04-12 | 2017-11-29 | 船井電機株式会社 | 表示装置 |
CN104678630A (zh) * | 2013-11-28 | 2015-06-03 | 富泰华精密电子(郑州)有限公司 | 侧入式背光模组 |
KR20160019565A (ko) * | 2014-08-11 | 2016-02-22 | 삼성디스플레이 주식회사 | 표시장치 |
CN105093387B (zh) * | 2015-07-31 | 2018-12-07 | 深圳市华星光电技术有限公司 | 导光板、背光模组及显示装置 |
CN114664997A (zh) * | 2022-03-14 | 2022-06-24 | Tcl华星光电技术有限公司 | 发光二极管、发光基板以及显示装置 |
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- 2010-03-05 BR BRPI1015583A patent/BRPI1015583A2/pt not_active IP Right Cessation
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- 2010-03-05 RU RU2011146532/28A patent/RU2011146532A/ru unknown
- 2010-03-05 CN CN2010800298839A patent/CN102472909A/zh active Pending
- 2010-03-05 US US13/320,917 patent/US20120099045A1/en not_active Abandoned
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US20120099045A1 (en) | 2012-04-26 |
JPWO2011001711A1 (ja) | 2012-12-13 |
CN102472909A (zh) | 2012-05-23 |
BRPI1015583A2 (pt) | 2016-04-26 |
RU2011146532A (ru) | 2013-05-27 |
EP2434332A1 (en) | 2012-03-28 |
EP2434332A4 (en) | 2013-01-02 |
JP5285153B2 (ja) | 2013-09-11 |
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