WO2012035840A1 - Dispositif d'éclairage et dispositif d'affichage à cristaux liquides doté de celui-ci - Google Patents

Dispositif d'éclairage et dispositif d'affichage à cristaux liquides doté de celui-ci Download PDF

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Publication number
WO2012035840A1
WO2012035840A1 PCT/JP2011/064139 JP2011064139W WO2012035840A1 WO 2012035840 A1 WO2012035840 A1 WO 2012035840A1 JP 2011064139 W JP2011064139 W JP 2011064139W WO 2012035840 A1 WO2012035840 A1 WO 2012035840A1
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WO
WIPO (PCT)
Prior art keywords
chassis
led substrate
protrusion
plate portion
liquid crystal
Prior art date
Application number
PCT/JP2011/064139
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English (en)
Japanese (ja)
Inventor
満 細木
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 WO2012035840A1 publication Critical patent/WO2012035840A1/fr

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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
    • G02F1/133308—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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to an illuminating device including a plurality of LEDs, and a liquid crystal display device in which the illuminating device is arranged on the back of a liquid crystal display panel.
  • a liquid crystal display device including a light transmissive liquid crystal display panel includes a liquid crystal display panel and an illumination device disposed on the back side of the liquid crystal display panel so as to irradiate light.
  • LEDs light emitting diodes
  • a type (edge light type) is known.
  • Such a sidelight type illuminating device has advantages such as being easily reduced in thickness as compared to a direct illuminating device in which a light source is disposed on the back surface of a liquid crystal display panel.
  • FIG. 5 and FIG. 6 are an exploded perspective view and a cross-sectional view of the main part showing a schematic configuration of a liquid crystal display device provided with a sidelight type illumination device using such LEDs.
  • the liquid crystal display device 100 includes a bezel 102, a liquid crystal display panel 103, and a lighting device 104.
  • the bezel 102 has a frame shape that covers the periphery of the liquid crystal display panel 103, and ensures the strength of the entire liquid crystal display device 100 together with the chassis 114.
  • the liquid crystal display panel 103 is formed by bonding two pieces of glass and sealing the liquid crystal therebetween, so that an image can be displayed on the front surface.
  • the illuminating device 104 includes a chassis 114 having a shallow box shape. Inside the chassis 114, an LED substrate on which optical sheets 107 to 109, a light guide plate 111, a reflection sheet 110, and a plurality of LEDs 121 are mounted. 120 can be stored.
  • the light guide plate 111 has a light incident surface 111a for introducing light from the LEDs 121 included in the LED substrate 120, and the light introduced from the light incident surface 111a upward (irradiation direction). And a light emitting surface 111b for emitting the light.
  • the light incident surface 111 a is configured by a predetermined side end surface of the light guide plate 111
  • the light emitting surface 111 b is configured by the front surface of the light guide plate 111.
  • the reflection sheet 110 is disposed so as to cover the back surface 111c of the light guide plate 111 opposite to the light emitting surface 111b.
  • the optical sheets 107 to 109 include a diffusion sheet, a lens sheet, and the like, and are disposed on the light emitting surface 111b of the light guide plate 111.
  • the optical sheets 107 to 109, the light guide plate 111, and the reflection sheet 110 are fixed in a stacked state on the bottom plate portion 114a of the chassis 114 by the frame 105.
  • the plurality of LEDs 121 provided on the LED substrate 120 are arranged in the vicinity of the light incident surface 111 a of the light guide plate 111. Further, the light emitting surface 121a of the LED 121 is arranged at a predetermined interval along the light incident surface 111a so as to face the light incident surface 111a of the light guide plate 111. In this case, the LED substrate 120 is held by the support member 115 provided on the bottom plate part 114a in the vicinity of the side wall part 114b of the chassis 114 so as to stand upright with respect to the bottom plate part 114a.
  • the support member 115 has a shape like a so-called bracket (an L-shaped mounting (fixing) mounting bracket), and is formed by cutting an aluminum material or the like.
  • the support member 115 is a portion for attaching the LED substrate 120 to the LED board mounting plate portion 115a having a long shape and a chassis fixing plate having a long shape fixed to the bottom plate portion 114a of the chassis 114.
  • the portion 115b is arranged in a substantially L shape.
  • mounting holes 120a are formed at the center of the LED substrate 120 and at three positions on both the left and right sides.
  • screw holes 115d are formed at three locations on the center and the left and right sides of the LED board mounting plate portion 115a of the support member 115. Therefore, by passing the fixing screw 122 through the mounting hole 120a of the LED board 120 and screwing the fixing screw 122 into the screw hole 115d of the LED board mounting plate portion 115a, the LED board 120 is attached to the support member 115. It has become.
  • the bottom plate portion 114a of the chassis 114 is provided with a convex portion 114d protruding downward, and the chassis fixing plate portion 115b of the support member 115 is accommodated in the convex portion 114d.
  • Attachment holes 115c are formed at two positions on the left and right sides of the chassis fixing plate 115b of the support member 115.
  • screw holes 114c are formed at two locations on the left and right sides of the convex portion 114d.
  • the fixing member 116 is inserted into the mounting hole 115c of the supporting member 115, and the fixing screw 116 is screwed into the screw hole 114c of the protruding portion 114d, so that the supporting member 115 is mounted on the protruding portion 114d. .
  • a heat conductive sheet 125 is interposed between the LED board 120 and the LED board mounting plate 115a.
  • the heat generated by the LED 121 due to light emission is conducted to the bottom plate portion 114a (convex portion 114d) of the chassis 114 via the LED substrate 120, the heat conductive sheet 125, and the support member 115, so that the temperature of the LED 121 does not increase excessively.
  • the following patent document is mentioned as a prior art document relevant to this invention.
  • a problem to be solved by the present invention is that a plurality of LEDs for irradiating light to be introduced into the light guide plate are provided from the side end surface of the light guide plate accommodated in the inner bottom surface of the shallow box-shaped chassis whose upper surface is opened.
  • An object of the present invention is to provide an illuminating device in which the LED substrate to be mounted is disposed along the inner wall surface of the chassis and the LED substrate can be easily attached, and a liquid crystal display device including the same.
  • a lighting device includes a shallow box-shaped chassis having an upper surface opened, a light guide plate accommodated in the inner bottom surface of the chassis, and a frame attached to the upper surface opening edge of the chassis.
  • the frame is fixed to the bottom plate surface in the vicinity of the side wall portion of the chassis, the LED board on which a plurality of LEDs arranged on the inner wall surface of the chassis and irradiating light to the side end surface of the light guide plate are mounted.
  • An L-shaped support member, and the support member includes a chassis fixing plate portion that is directly fixed to the bottom plate surface of the chassis and an LED substrate mounting plate portion that is erected on the chassis fixing plate portion.
  • the LED board is attached to the LED board mounting plate portion of the support member, and a first protrusion is provided on the lower side of the LED board, and the upper surface of the chassis fixing plate portion of the support member. Is provided with a first attachment groove into which the first protrusion is fitted, a second protrusion is provided on the upper side of the LED substrate, and a second attachment in which the second protrusion is fitted on the lower surface of the frame.
  • the gist is that a groove is provided.
  • the LED substrate can be simply attached by being sandwiched between the frame and the chassis fixing plate portion of the support member without using a fixing member such as a fixing screw.
  • a fixing member such as a fixing screw.
  • the troublesomeness of attaching using a fixing screw is eliminated, and the workability of assembling the lighting device is improved.
  • a conventional fixing screw is not required, the cost can be reduced accordingly.
  • it is not necessary to process a mounting hole for passing the fixing screw through the LED substrate the cost can be reduced accordingly.
  • the first protrusion and the second protrusion provided on the LED substrate are respectively provided at the left and right ends in the longitudinal direction of the LED substrate, or the first protrusion and the second protrusion. If it is set as the structure respectively provided in the left-right both ends and center of the longitudinal direction of the said LED board, it can position and fix an LED board sufficiently and sufficiently.
  • a heat conductive sheet having an adhesive layer on both sides is interposed between the LED board and the LED board mounting plate portion of the support member. Since the LED board can be attached to the LED board mounting plate part of the support member with a heat conductive sheet before the second protrusion on the upper side of the LED board is fitted and fixed in the second mounting groove of the frame. Assembling workability is improved.
  • a tapered surface is formed at the opening end of the first mounting groove provided in the chassis fixing plate portion.
  • a heat conductive sheet having an adhesive layer on both sides is interposed between the LED board and the LED board mounting plate part of the support member, the first protrusion part of the LED board is connected to the chassis fixing plate part. Workability at the time of fitting into one mounting groove is improved.
  • the gist of the liquid crystal display device according to the present invention is that it includes such an illuminating device and a liquid crystal display panel that performs display using light from the illuminating device. According to such a liquid crystal display device, since the workability of assembling the lighting device is improved, the cost for manufacturing the liquid crystal display device can be reduced.
  • the LED board can be easily attached by being sandwiched between the frame and the chassis fixing plate portion of the support member without using a fixing screw, a conventional fixing screw is used. This eliminates the troublesome task of attaching the lighting device and improves the workability of assembling the lighting device.
  • FIG. 1 is an exploded perspective view schematically showing a schematic configuration of a liquid crystal display device according to an embodiment of the present invention. It is sectional drawing which expanded and showed the principal part after the assembly of the liquid crystal display device of FIG. It is the external appearance perspective view which expanded and showed the principal part of the flame
  • FIG. 1 is an exploded perspective view schematically showing a liquid crystal display device according to this embodiment.
  • the liquid crystal display device 1 includes a liquid crystal display panel 3 and an illumination device (backlight device) 4 for irradiating the liquid crystal display panel 3 with light, and these are integrally held by a bezel 2 or the like. It has become.
  • the bezel 2 has a frame shape that covers the periphery of the liquid crystal display panel 3, and ensures the strength of the entire liquid crystal display device 1 together with the chassis 14 included in the illumination device 4.
  • the liquid crystal display panel 3 has a horizontally long rectangular shape when viewed from above.
  • a pair of glass substrates comprising a thin film transistor (TFT) array substrate and a color filter (CF) substrate are bonded together in parallel at a predetermined interval, and a liquid crystal is sandwiched between the glass substrates. It has a sealed configuration.
  • TFT thin film transistor
  • CF color filter
  • a plurality of TFTs and pixel electrodes are formed in a matrix on the TFT array substrate, and a plurality of colored patterns are formed in a matrix on the CF substrate, and a common electrode is formed on almost the entire surface.
  • An image can be displayed by controlling the orientation of the liquid crystal by changing the voltage applied between the first electrode and the common electrode.
  • a polarizing plate is disposed on each of the front and back surfaces of the liquid crystal display panel 3.
  • the illumination device 4 is a so-called side light type (edge light type) illumination device.
  • the illumination device 4 includes a substantially box-shaped chassis 14 having an opening opened toward the liquid crystal display panel 3 side, and optical sheets 7 to 9 arranged so as to cover the opening of the chassis 14. Is provided. Further, inside the chassis 14, an LED substrate 20 on which a plurality of LEDs (light emitting diodes) 21 that are light sources are mounted, a light guide plate 11 that guides light from the LEDs 21 to the liquid crystal display panel 3 side, and the light guide plate 11.
  • arranged to the back side is provided.
  • the frame 5 is for fixing the optical sheets 7 to 9, the light guide plate 11 and the reflection sheet 10 to the chassis 14 in a state where they are laminated in this order from above.
  • the frame 5 is formed in a frame shape (frame shape) extending along the outer peripheral end portion of the light guide plate 11, and the outer peripheral end portions of the optical sheets 7 to 9 and the light guide plate 11 extend over substantially the entire circumference. It can be pressed from the front side.
  • the frame 5 is made of, for example, black synthetic resin and has a light shielding property. Further, the frame 5 can receive the back surface of the outer peripheral end portion of the liquid crystal display panel 3 with a concave surface 5b formed inside the frame portion 5a.
  • the chassis 14 is formed into a shallow box shape by bending a metal plate made of aluminum or the like, and the optical sheets 7 to 9, the light guide plate 11, the reflection sheet 10, the support member 15, and the LED are contained therein.
  • the substrate 20 can be accommodated.
  • the chassis 14 includes a bottom plate portion 14a having a horizontally long rectangular shape when viewed from above and a side plate portion 14b rising from the outer edges of the four sides of the bottom plate portion 14a. Further, the above-described frame 5 and bezel 2 can be fixed to the side plate portion 14b by screws or the like.
  • the three optical sheets 7 to 9 are composed of thin resin sheets having a horizontally long rectangular shape when seen in a plan view.
  • the optical sheets 7 to 9 are placed on the front side (light emitting side) of the light guide plate 11 and are interposed between the liquid crystal display panel 3 and the light guide plate 11.
  • a deflection selective reflection sheet 7 having a thickness of about 0.1 to 0.5 mm
  • a lens sheet 8 and a diffusion sheet 9 are used in order from the top.
  • the diffusion sheet 9 is for making the luminance distribution uniform by diffusing the light emitted from the light guide plate 11.
  • the lens sheet 8 is for increasing the front luminance by condensing the light emitted from the diffusion sheet 9.
  • the deflection selective reflection sheet 7 is for selectively reflecting the light emitted from the lens sheet 8 so as not to be absorbed by a deflection plate (not shown) attached to the back surface of the liquid crystal display panel 3.
  • the light guide plate 11 is formed of a transparent resin plate having a horizontally long rectangular shape in a plan view and having a thickness of about 3 to 4 mm, for example.
  • the light guide plate 11 has a light incident surface 11a for introducing light from the LED 21 and a light emission surface 11b for emitting light introduced from the light incident surface 11a upward (irradiation direction). ing.
  • the light incident surface 11 a is configured by a predetermined side end surface of the light guide plate 11, and the light emitting surface 11 b is configured by the front surface of the light guide plate 11.
  • the light guide plate 11 reflects light incident from the light incident surface 11a repeatedly between the light emitting surface (front surface) 11b and the back surface 11c opposite to the light emitting surface 11b, and forms a planar shape inside the light guiding plate 11 It can be expanded.
  • a plurality of scattering portions are formed on the back surface 11c of the light guide plate 11 to scatter light incident from the light incident surface 11a and emit the light from the light emitting surface 11b.
  • a scattering part what was formed by printing the coating material containing a white pigment etc. on the back surface 11c of the light-guide plate 11 in the shape of a spot is applied.
  • the reflection sheet 10 is disposed so as to cover the back surface 11c of the light guide plate 11 opposite to the light emitting surface 11b.
  • the reflection sheet 10 is laid on the bottom plate portion 14a of the chassis 14.
  • the reflection sheet 10 is for reflecting light emitted from the back surface 11c of the light guide plate 11 to the back side toward the light guide plate 11, and is a resin sheet having a thickness of about 0.1 to 2 mm, for example. Composed.
  • the front surface of the reflection sheet 10 is painted white, for example, and the light emitted from the back surface 11c of the light guide plate 11 is efficiently reflected to the light guide plate 11 side so that the light utilization efficiency and the light of the light guide plate 11 are increased.
  • the brightness at the exit surface 11b is increased.
  • the illumination device 4 can convert the light from the LED 21 into the planar light by the optical sheets 7 to 9, the light guide plate 11 and the reflection sheet 10 and irradiate the back side of the liquid crystal display panel 3. Yes.
  • a power supply board 18 that supplies power to the LED board 20 and a control board 19 that drives the liquid crystal display panel 3 are disposed on the rear surface of the chassis 4.
  • the plurality of LEDs 21 provided on the LED substrate 20 are disposed in the vicinity of the light incident surface 11 a of the light guide plate 11.
  • the LED 21 has a package structure in which, for example, an LED chip that generates blue light is sealed with a transparent resin mixed with a yellow phosphor, and white light can be emitted from the light emitting surface 21a of the LED 21. Yes.
  • Such LEDs 21 are arranged at a predetermined interval along the light incident surface 11 a so that the light emitting surface 21 a faces the light incident surface 11 a of the light guide plate 11.
  • the LED substrate 20 is attached in an upright state (an upright state) on an L-shaped support member 15 fixed on the bottom plate portion 14 a in the vicinity of the side plate portion 14 b of the chassis 14.
  • the support member 15 has a shape like a so-called bracket (an L-shaped mounting bracket), and is formed by cutting an aluminum material, for example.
  • the support member 15 is a chassis having a long shape which is a portion fixed to the bottom plate portion 14a of the chassis 14 and a plate portion 15a having a long shape which is a portion to which the LED substrate 20 is attached.
  • the fixing plate 15b is arranged in a substantially L shape.
  • Mounting holes 15c are formed at two positions on the left and right sides of the chassis fixing plate portion 15b of the support member 15.
  • the bottom plate portion 14a of the chassis 14 is provided with a convex portion 14d projecting downward, and the chassis fixing plate portion 15b of the support member 15 is accommodated in the convex portion 14d.
  • Screw holes 14c are formed at two locations on the left and right sides of the convex portion 14d. Therefore, the support member 15 is fixed to the convex portion 14d by passing the fixing screw 16 through the mounting hole 15c of the support member 15 and screwing the fixing screw 16 into the screw hole 14c of the convex portion 14d. .
  • the LED substrate 20 includes a base material 22 made of metal such as aluminum.
  • This base material 22 (LED substrate 20) has a horizontally long belt shape.
  • an insulating layer 23 is formed on the front surface of the base material 22, and a plurality of LEDs 21, 21, 21,... Are aligned on the insulating layer 23 along the longitudinal direction thereof. Has been implemented.
  • the plurality of LEDs 21 are connected in series by a wiring pattern (not shown) formed on the insulating layer 23.
  • the base material 22 of the LED substrate 20 has a function of suppressing a temperature rise due to heat generation of the LED 21.
  • the base material 22 is affixed to the LED board mounting plate portion 15a of the support member 15 via a heat conductive sheet 25 having adhesive layers on both sides. Therefore, the heat generated by the LED 21 is conducted to the bottom plate portion 14a (convex portion 14d) of the chassis 14 through the base material 22, the heat conductive sheet 25, and the support member 15, so that the temperature of the LED 21 does not increase excessively. Is suppressed.
  • 1st protrusion part 20b which protruded below is provided in three places of the center of the lower side 20a of LED board 20, and right-and-left both ends.
  • the 2nd protrusion part 20d which protruded upwards is provided in the three places of the center of the upper side 20c of LED board 20, and both right-and-left both ends.
  • the first protrusions 20b are provided at the center and the left and right ends of the chassis fixing plate 15b of the support member 15.
  • a first mounting groove 15d to be fitted is provided. As shown in FIGS. 2 and 3, the opening end of the first mounting groove 15d on the LED board mounting plate portion 15a side is flush with the inner surface of the LED board mounting plate portion 15a. Is formed.
  • a tapered surface 15e is formed at the opening end of the first mounting groove 15d opposite to the LED board mounting plate 15a side.
  • the center and left and right sides of the lower surface 5c of the frame 5a on the long side of the frame 5 are provided.
  • second mounting grooves 5d into which the second protrusions 20d are fitted are provided so as to be recessed upward.
  • the procedure for assembling the lighting device 4 having such a configuration will be described. First, as shown in FIG. 4, the LED substrate 20 is attached to the support member 15.
  • a heat conductive sheet 25 having an adhesive layer on both sides is attached in advance to the back surface of the LED substrate 20, and the first protrusion 20b of the LED substrate 20 is supported.
  • the member 15 is fitted into the first mounting groove 15d of the chassis fixing plate portion 15b.
  • the LED substrate 20 is inclined with respect to the LED substrate mounting plate portion 15a, the first protrusion 20b is fitted into the first mounting groove 15d, and then the LED substrate 20 is mounted on the LED substrate mounting plate.
  • the LED substrate 20 is attached to the LED substrate mounting plate portion 15a by the heat conductive sheet 25 by being raised so as to be parallel to the portion 15a.
  • a heat conductive sheet 25 having an adhesive layer on both sides is attached in advance to the inner surface of the LED board mounting plate 15a, and the first protrusion of the LED board 20 is attached.
  • 20b may be fitted into the first mounting groove 15d of the chassis fixing plate portion 15b of the support member 15.
  • the LED board 20 is inclined with respect to the LED board mounting plate 15a, the first protrusion 20b is fitted into the first mounting groove 15d, and then the LED board 20 is mounted on the LED board mounting board.
  • the LED substrate 20 is attached to the LED substrate mounting plate portion 15a by the heat conductive sheet 25 by raising it so as to be parallel to 15a.
  • the tapered surface 15 e is formed at the opening end of the first attachment groove 15 d opposite to the LED substrate attachment plate portion 15 a side. It is easy to fit the first projecting portion 20b into the first mounting groove 15d in a posture in which 20 is inclined with respect to the LED board mounting plate portion 15a.
  • the support member 15 to which the LED board 20 is attached in this way is placed on the convex portion 14d of the chassis 14 and fixed by the fixing screw 16.
  • the reflection sheet 10, the light guide plate 11, and the optical sheets 7 to 9 are sequentially placed and stacked on the bottom plate portion 14 a of the chassis 14.
  • the frame 5 is lowered from above and attached to the chassis 14.
  • the second protrusion 20 d provided on the upper side 20 c of the LED substrate 20 is fitted into the second mounting groove 5 d provided on the lower surface 5 c of the frame 5.
  • the upper side 20 c of the LED substrate 20 is fixed by the frame 5.
  • the LED substrate 20 can be simply attached so as to be sandwiched between the frame 5 and the chassis fixing plate portion 15b of the support member 15 without using a fixing member such as a fixing screw. Therefore, the troublesome work of attaching using a fixing screw as in the prior art is eliminated, and the workability of assembling the lighting device 4 is improved. In addition, since a conventional fixing screw is not required, the cost can be reduced accordingly. Furthermore, since it is not necessary to process a mounting hole for passing the fixing screw through the LED substrate 20, the cost can be reduced accordingly.
  • the present invention is not limited to these embodiments, and can be variously modified without departing from the gist of the present invention. Of course, it can be implemented.
  • the LED substrate is shown so as to be opposed to one long side of the light guide plate 11 having a rectangular shape, but the number of LED substrates 20 can be appropriately changed.
  • the LED substrate may be arranged so as to face each of a pair of opposed long sides of the light guide plate, and the LED substrate faces each of one long side and one short side of the light guide plate.
  • the LED substrate may be disposed so as to face each of the four sides of the light guide plate, and is not limited to the above-described embodiment.

Abstract

L'objet de la présente invention est de proposer un dispositif d'éclairage auquel un support de DEL est facilement fixé. Le dispositif d'éclairage (4) comprend : une plaque de guidage de lumière (11); un châssis en forme de boîte (14) recevant la plaque de guidage de lumière (11); un cadre en forme de cadre (5) monté sur la face supérieure du châssis (14); un support de DEL en forme de bande oblongue (20) avec une pluralité de DEL (21) montées qui diffusent la lumière sur la surface d'extrémité latérale de la plaque de guidage de lumière (11); et un élément de support (15) d'une forme dans laquelle une section plaque (15a) pour la fixation du support de DEL à laquelle le support de DEL (20) est fixé et une section plaque (15b) destinée à fixer le châssis et fixée à la surface inférieure du châssis (14) sont disposés dans une forme de L. Dans ledit dispositif d'éclairage (4) : une première section en saillie (20b) est disposée sur la face inférieure du support de DEL (20); une première rainure de fixation (15d), dans laquelle la première section en saillie (20b) est insérée, est disposée dans la surface supérieure de la section plaque (15b) destinée à fixer le châssis; une seconde section en saillie (20d) est disposée dans la face supérieure du support de DEL (20); et une seconde rainure de fixation (5d), dans laquelle la seconde section en saillie (20d) est insérée, est disposée dans la surface inférieure du cadre (5).
PCT/JP2011/064139 2010-09-15 2011-06-21 Dispositif d'éclairage et dispositif d'affichage à cristaux liquides doté de celui-ci WO2012035840A1 (fr)

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JP2010-206675 2010-09-15
JP2010206675 2010-09-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013150938A1 (fr) * 2012-04-03 2013-10-10 シャープ株式会社 Dispositif d'éclairage, dispositif d'affichage et dispositif récepteur de télévision
WO2014008687A1 (fr) * 2012-07-13 2014-01-16 深圳市华星光电技术有限公司 Module de rétroéclairage à del
KR20140092125A (ko) * 2013-01-15 2014-07-23 엘지이노텍 주식회사 회로기판, 상기 회로기판을 포함하는 조명장치 및 평판 디스플레이

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JPH08177518A (ja) * 1994-12-21 1996-07-09 Unisia Jecs Corp 制御ユニット
JP2009099316A (ja) * 2007-10-15 2009-05-07 Hitachi Displays Ltd バックライト装置、液晶表示装置、及びバックライト装置の製造方法
WO2009107275A1 (fr) * 2008-02-28 2009-09-03 シャープ株式会社 Unité de rétroéclairage et dispositif d'affichage à cristaux liquides

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JPH08177518A (ja) * 1994-12-21 1996-07-09 Unisia Jecs Corp 制御ユニット
JP2009099316A (ja) * 2007-10-15 2009-05-07 Hitachi Displays Ltd バックライト装置、液晶表示装置、及びバックライト装置の製造方法
WO2009107275A1 (fr) * 2008-02-28 2009-09-03 シャープ株式会社 Unité de rétroéclairage et dispositif d'affichage à cristaux liquides

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WO2013150938A1 (fr) * 2012-04-03 2013-10-10 シャープ株式会社 Dispositif d'éclairage, dispositif d'affichage et dispositif récepteur de télévision
WO2014008687A1 (fr) * 2012-07-13 2014-01-16 深圳市华星光电技术有限公司 Module de rétroéclairage à del
KR20140092125A (ko) * 2013-01-15 2014-07-23 엘지이노텍 주식회사 회로기판, 상기 회로기판을 포함하는 조명장치 및 평판 디스플레이
JP2014137997A (ja) * 2013-01-15 2014-07-28 Lg Innotek Co Ltd 回路基板及び回路基板を含むフラットパネルディスプレイ
KR102034229B1 (ko) * 2013-01-15 2019-10-18 엘지이노텍 주식회사 회로기판, 상기 회로기판을 포함하는 조명장치 및 평판 디스플레이

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