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WO2011070724A1 - Appareil d'éclairage et dispositif d'affichage à cristaux liquides le comprenant - Google Patents

Appareil d'éclairage et dispositif d'affichage à cristaux liquides le comprenant Download PDF

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Publication number
WO2011070724A1
WO2011070724A1 PCT/JP2010/006606 JP2010006606W WO2011070724A1 WO 2011070724 A1 WO2011070724 A1 WO 2011070724A1 JP 2010006606 W JP2010006606 W JP 2010006606W WO 2011070724 A1 WO2011070724 A1 WO 2011070724A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
light
board
guide plate
drive circuit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2010/006606
Other languages
English (en)
Japanese (ja)
Inventor
大山英樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to US13/514,122 priority Critical patent/US20120242929A1/en
Publication of WO2011070724A1 publication Critical patent/WO2011070724A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer

Definitions

  • the present invention relates to an illumination device using an LED as a light source, and a liquid crystal display device including the illumination device.
  • a backlight unit as an illumination device is provided on the back side of the liquid crystal display panel.
  • the backlight unit includes a light source such as an LED (Light Emitting Diode) and a light guide plate that irradiates the back surface of the liquid crystal display panel with light incident from the light source as planar light.
  • a so-called “edge light system” having a light source on the end face of a light guide plate is widely used.
  • FIG. 10 is a perspective view thereof
  • FIG. 11 is a partially enlarged side view thereof.
  • the backlight unit 100 has a rectangular plate-shaped light guide plate 101 and a dish-shaped frame 102 that accommodates the light guide plate 101.
  • the frame 102 includes a rectangular bottom plate portion 102a that contacts the entire bottom surface of the light guide plate 101 opposite to the light exit surface 101a, and side wall portions 102b that protrude from the four sides of the bottom plate portion. Have. Each side wall 102 b is in contact with the side surface of the light guide plate 101.
  • a plurality of LED substrates 104 having a plurality of LEDs 103 are fixedly provided on one side wall portion 102b of the frame 102. As shown in FIG. 11, an opening 105 in which the LED 103 is disposed is formed in the side wall 102 b of the frame 102 for each LED 103. Thus, the LED substrate 104 is sandwiched between the side wall portion 102b of the frame 102 and the light shielding member 106 in a state where each LED 103 is fitted in the opening 105.
  • the LED board 104 is connected to an LED drive circuit board (not shown) for driving and controlling each LED via the cable 108.
  • the light shielding member 106 is a member having an L-shaped cross section, and covers the back surface of the LED substrate 104 and the outer edge portion of the light exit surface 101 a of the light guide plate 101.
  • the LED substrate 104 is fixed to the side wall portion 102b of the frame 102 by screws 107 together with the light shielding member 106.
  • Patent Document 1 discloses a lighting device in which a plurality of insertion holes are formed on the end face of a metal frame that accommodates the light guide plate, and LEDs are respectively inserted into the insertion holes from the outside. As a result, the frame region constituting the outer frame of the lighting device is reduced and the thickness of the light guide plate is also reduced.
  • the present invention has been made in view of such various points, and the main object of the present invention is to facilitate the manufacture of the lighting device and to facilitate the replacement of the light source of the lighting device. There is.
  • the terminal part of the LED board is configured to be detachable from the socket part of the LED driving circuit board.
  • the present invention includes an LED board that is a board provided with an LED as a light source, and an LED drive circuit board that is a board provided with a drive circuit for driving and controlling the light emission state of the LED on the LED board. Intended for lighting devices.
  • the LED board is formed with a terminal portion electrically connected to the LED of the LED board, and the LED drive circuit board is electrically connected to the drive circuit and the terminal of the LED board.
  • a socket part is formed so that the part is detachable.
  • the socket part to which the terminal part of the LED board can be attached and detached is formed on the LED driving circuit board, wiring for connecting the LED board and the LED driving circuit board is not necessary when manufacturing the lighting device. become. That is, the lighting device can be easily manufactured by mounting the terminal portion on the socket portion. On the other hand, when a lighting failure occurs in the LED, it is possible to easily replace the LED with a new LED by detaching the terminal portion from the socket portion.
  • the terminal part of the LED board is configured to be detachable from the socket part of the LED drive circuit board, the manufacture of the lighting device can be facilitated, and the replacement of the LED as the light source of the lighting device is facilitated. can do.
  • FIG. 1 is an exploded perspective view showing a main part of the illumination device according to the first embodiment.
  • FIG. 2 is a side view showing the LED substrate and the LED driving circuit substrate separated from each other.
  • FIG. 3 is a side view showing the LED board, the light shielding member, and the LED driving circuit board attached to the light guide plate.
  • FIG. 4 is a cross-sectional view showing an LED substrate, a light guide plate, and the like housed in the chassis and the bezel.
  • FIG. 5 is an exploded perspective view of the lighting device according to the first embodiment.
  • FIG. 6 is a cross-sectional view showing an LED substrate mounted on the LED drive circuit according to the second embodiment.
  • FIG. 7 is a plan view showing an LED substrate mounted on the LED drive circuit according to the second embodiment.
  • FIG. 8 is a cross-sectional view showing a modification of the second embodiment.
  • FIG. 9 is a side view showing a main part of the liquid crystal display device according to the third embodiment.
  • FIG. 10 is an exploded perspective view showing a main part of a conventional lighting device.
  • FIG. 11 is a cross-sectional view showing an LED substrate and a light shielding member attached to a conventional light guide plate.
  • Embodiment 1 of the Invention 1 to 6 show Embodiment 1 of the present invention.
  • FIG. 1 is an exploded perspective view showing a main part of the backlight unit 11 according to the first embodiment.
  • FIG. 2 is a side view showing the LED board 14 and the LED driving circuit board 15 in a state separated from each other.
  • FIG. 3 is a side view showing the LED board 14, the light shielding member 16, and the LED drive circuit board 15 attached to the light guide plate 13.
  • FIG. 4 is a cross-sectional view showing the LED board 14 and the light guide plate 13 accommodated in the chassis 20 and the bezel 21.
  • FIG. 5 is an exploded perspective view of the backlight unit 11 according to the first embodiment.
  • the liquid crystal display device 1 is a back as a lighting device that is disposed to face the liquid crystal display panel 10 on the back side (that is, the side opposite to the user) of the liquid crystal display panel 10. And a light unit 11.
  • the liquid crystal display device 1 is configured such that the liquid crystal display panel 10 selectively transmits the light of the backlight unit 11 to perform transmissive display.
  • liquid crystal display panel 10 an active matrix substrate in which a plurality of TFTs (thin film transistors) and pixel electrodes are formed for each pixel, a counter substrate facing the substrate, and these substrates And a liquid crystal layer sealed therebetween.
  • TFTs thin film transistors
  • the backlight unit 11 is configured in a so-called edge light system, and as shown in FIGS. 4 and 5, the light guide plate 13, the plurality of LED substrates 14, the LED drive circuit substrate 15, the light shielding member 16, and the reflection plate. 17 and a diffusion plate 18.
  • the backlight unit 11 and the liquid crystal display panel 10 are accommodated between the chassis 20 and the bezel 21.
  • the LED substrate 14 is a substrate on which LEDs 24 as light sources are provided, and has a plurality of LEDs 24 mounted on the surface and terminal portions 26 provided in a protruding manner. .
  • the terminal part 26 is formed in the thin plate shape extended along the surface in which LED in the LED board 14 is provided, as shown in FIG.
  • the terminal portion 26 has a conductive layer (not shown) electrically connected to each LED 24.
  • the light guide plate 13 is made of a transparent resin such as an acrylic resin, and has a rectangular planar shape.
  • the light guide plate 13 includes a side surface 13a on which the light of the LED 24 of the LED substrate 14 is incident, a surface perpendicular to the side surface 13a and an output surface 13b from which light is emitted, and a side opposite to the output surface 13b. And a bottom surface 13c which is a surface.
  • the LED substrate 14 is arranged in parallel to the side surface 13a of the light guide plate.
  • a diffusion plate 18 that diffuses light is disposed on the light exit surface 13 b side of the light guide plate 13.
  • a prism sheet or the like is provided so as to be laminated on the diffusion plate 18.
  • a reflecting plate 17 made of a metal sheet or the like is disposed on the bottom surface 13 c side of the light guide plate 13.
  • the light guide plate 13 guides the light incident from the side surface 13a while reflecting the light internally.
  • the light emitted from the bottom surface 13 c of the light guide plate 13 is reflected by the reflection plate 17 and enters the light guide plate 13 again.
  • uniform light is emitted from the emission surface 13 b, and the emitted light is transmitted through the diffusion plate 18 and diffused, and then supplied to the liquid crystal display panel 10.
  • the LED drive circuit board 15 is a board provided with a drive circuit 29 that drives and controls the light emission state of the LEDs 24 on the LED board 14, and is arranged in parallel to the bottom surface 13 c of the light guide plate 13.
  • the LED drive circuit board 15 includes a circuit board 28, the drive circuit 29, and a socket part 30.
  • the circuit board 28 is an insulating board, and a driving circuit 29 made of an IC chip or the like is mounted on one surface, and a plurality of socket portions 30 are formed on the other surface corresponding to the plurality of LED boards 14. ing.
  • the socket part 30 is electrically connected to the drive circuit 29, and the terminal part 26 of the LED board 14 is configured to be detachable.
  • the socket part 30 is formed in a convex shape on the circuit board 28 and has a slit-like insertion port 31 into which the terminal part 26 of the LED board 14 is inserted.
  • a conductive layer (not shown) is formed on the inner surface of the insertion port 31.
  • the circuit board 28 is formed with wiring groups on both sides thereof, and is electrically connected through through holes formed through the circuit board 28. One end side of the wiring is connected to the conductive layer in the insertion port 31 of the socket portion 30, while the other end side of the wiring is connected to the drive circuit 29.
  • the terminal portion 26 of the LED substrate 14 is attached to the insertion port 31 in the socket portion 30 of the LED drive circuit substrate 15, whereby the LED 24 is electrically connected to the drive circuit 29 via the terminal portion 26 and the socket portion 30. To be connected to.
  • the light shielding member 16 is made of, for example, a metal material, and includes a first light shielding portion 16 a disposed between the side surface 13 a of the light guide plate 13 and the LED substrate 14, and a part of the emission surface 13 b at the end of the light guide plate 13. It has the 2nd light-shielding part 16b which light-shields.
  • the light shielding member 16 is formed into a member having an L-shaped cross section by the first light shielding portion 16a and the second light shielding portion 16b.
  • an opening 16c is formed as a transmission part that transmits the light of the LED 24.
  • the opening 16c is formed to have substantially the same size as the outer shape of the LED 24, for example, and the LED substrate 14 is locked to the light shielding member 16 by fitting the LED 24 into the opening 16c.
  • the transmission part can be configured to transmit the light of the LED 24 by being formed of, for example, a transparent member other than the opening 16c.
  • the light guide plate 13 is narrowed by the LED driving circuit board 15 and the second light shielding part 16 b of the light shielding member 16 by attaching the terminal part 26 of the LED board 14 to the socket part 30 of the LED driving circuit board 15. It is held. In this state, the first light shielding portion 16 a of the light shielding member 16 is in contact with the side surface 13 a of the light guide plate 13. In this way, the LED drive circuit board 15, the LED board 14, and the light shielding member 16 are easily assembled to the light guide plate 13.
  • the chassis 20 is disposed on the opposite side of the LED driving circuit board 15 and the reflection plate 17 from the light guide plate 13, and has a rectangular plate-shaped bottom portion 20 a and 4 protruding from its four sides. It is formed in a dish shape having two side wall portions 20b. Inside the chassis 20, the light guide plate 13, the light shielding member 16, the LED substrate 14, the LED drive circuit substrate 15, the diffusion plate 18 and the reflection plate 17 are accommodated.
  • the bezel 21 is formed in a gold frame shape, and has a rectangular frame-shaped front surface portion 21a and four side wall portions 21b extending from the four sides of the front surface portion 21a toward the chassis 20 side. Then, with the liquid crystal display panel 10 placed on the diffusion plate 18, the bezel 21 is assembled to the chassis 20 from above.
  • the side wall portion 21 b of the bezel 21 circumscribes the side wall portion 20 b of the chassis 20, while the front surface portion 21 a of the bezel 21 is the second light shielding portion 16 b of the light shielding member 16. And the diffusion plate 18 is covered.
  • the liquid crystal display device 1 is configured as described above.
  • the terminal portion 26 of the LED substrate 14 is configured to be detachable from the socket portion 30 of the LED drive circuit substrate 15, the backlight unit 11 and the liquid crystal display device 1 including the same can be easily manufactured. Moreover, when a lighting failure occurs in the LED 24, the defective product can be easily replaced.
  • the socket part 30 to which the terminal part 26 of the LED board 14 can be attached and detached is formed on the LED drive circuit board 15, the LED board 14 and the LED drive circuit board 15 are connected when the backlight unit 11 is manufactured. Wiring for doing so can be eliminated.
  • the backlight unit 11 can be easily manufactured.
  • the terminal portion 26 is detached from the socket portion 30, so that it can be easily replaced with a new LED 24.
  • the backlight unit 11 is an edge light type. It can be applied to the backlight unit.
  • the light shielding member 16 having the first light shielding portion 16a and the second light shielding portion 16b is provided in the backlight unit 11, light that is about to leak from the side surface 13a of the light guide plate 13 is shielded by the first light shielding portion 16a. it can.
  • light that is about to leak from a part of the exit surface 13b at the end of the light guide plate 13 can be effectively shielded by the second light shielding portion 16b. Therefore, the light incident on the light guide plate 13 from the opening 16c formed in the first light shielding portion 16a can be suitably guided to the inside of the light guide plate 13.
  • the transmissive part 16c that transmits the light of the LED 24 is configured by the opening 16c formed in the first light shielding part 16a, the LED 24 can be disposed inside the opening 16c. Therefore, the outer shape of the backlight unit 11 can be reduced.
  • the light guide plate 13 is sandwiched between the LED drive circuit board 15 and the second light shielding portion 16b of the light shielding member 16 by mounting the terminal portion 26 on the socket portion 30.
  • the drive circuit board 15, the LED board 14, and the light shielding member 16 can be easily assembled to the light guide plate 13. Therefore, the LED substrate 14 can be fixed to the light guide plate 13 very easily.
  • the light shielding member 16 is made of a metal material, the light shielding member 16 acts as a heat radiating member, so that heat radiation of the LED 24 can be promoted.
  • Embodiment 2 of the Invention >> 6 and 7 show Embodiment 2 of the present invention.
  • the same parts as those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.
  • FIG. 6 is a cross-sectional view showing the LED board 14 mounted on the LED drive circuit board 15 in the second embodiment.
  • FIG. 7 is a plan view showing the LED board 14 mounted on the LED drive circuit board 15 in the second embodiment.
  • the lighting device of the first embodiment is an edge light type backlight unit 11, whereas the lighting device of the second embodiment is a so-called direct-type backlight unit 11. That is, the direct type backlight unit 11 is configured to supply the light of the LED 24 directly to the liquid crystal display panel 10 without using the light guide plate 13.
  • the LED drive circuit board 15 has a plurality of openings 33 formed in the circuit board 28.
  • the openings 33 are arranged at a predetermined interval.
  • a conductive layer 34 is formed on at least a part of the inner surface of each opening 33.
  • the socket part 30 is comprised by the opening part 33 formed in the circuit board 28.
  • the opening 33 corresponds to the insertion port 31 of the socket part 30 in the first embodiment.
  • the inner diameter of the opening 33 is larger on one surface side of the LED drive circuit board 15 (surface side on the liquid crystal display panel 10 side) than on the other surface side. As a result, the opening 33 is formed in a stepped section as shown in FIG.
  • the LED substrate 14 has a protrusion 14a formed on the side opposite to the side where the LED 24 is provided (that is, the back side).
  • a conductive layer (not shown) is provided on the side surface of the LED substrate 14 including the protrusions 14a.
  • the back side of the LED substrate 14 is formed in a stepped cross section.
  • the terminal part 26 of the LED board 14 in Embodiment 2 is formed by the side surface of the LED board 14.
  • the LED drive circuit board 15 is provided with a rectangular cover-shaped diffusion plate 35 that covers the LEDs 24.
  • Each LED board 14 is provided with one LED 24, and the diffusion plate 35 is arranged corresponding to each LED 24.
  • the same effect as in the first embodiment can be obtained, and the socket portion 30 is formed as the opening portion 33 into which the entire LED substrate 14 is fitted, and the terminal is formed by the side surface of the LED substrate 14. Since the portion 26 is formed, the entire backlight unit 11 can be significantly thinned while maintaining the detachability of the LED board 14 with respect to the LED drive circuit board 15.
  • FIG. 8 is a cross-sectional view showing a modification of the second embodiment.
  • the opening portions 33 of the LED substrate 14 and the LED drive circuit substrate 15 are each formed in a stepped shape in the cross section, whereas in the present modification, each is formed in a tapered shape in the cross section.
  • the opening 33 is formed in a cross-sectional taper shape whose inner diameter decreases from one surface side (that is, the liquid crystal display panel 10 side) of the LED drive circuit board 15 toward the other surface side.
  • the side surface of the LED substrate 14 is similarly formed in a tapered cross section.
  • a terminal portion 26 is configured by the tapered portion of the LED substrate 14.
  • a conductive layer 34 is formed on the inner surface of the opening 33.
  • a conductive layer (not shown) is also formed on the side surface of the LED substrate 14. Then, as shown in FIG. 8, the entire LED board 14 is fitted into and connected to the opening 33 of the LED drive circuit board 15.
  • FIG. 9 shows Embodiment 3 of the present invention.
  • FIG. 9 is a side view showing a main part of the liquid crystal display device 1 according to the third embodiment.
  • the lighting device of the third embodiment is configured by a so-called tandem backlight unit 11.
  • the backlight unit 11 includes a plurality of light guides 47, a transparent plate 23, a diffusion plate 18, and an optical sheet 19.
  • the light guide 47 causes the light emitted from the LED 24 to emit light from the light emitting surface 47a.
  • the light emitting surface 47a is a surface for irradiating the irradiation target with light.
  • the light guide 47 is configured as a tandem type. That is, the light guide 47 includes a light emitting portion 47b having a light emitting surface 47a and a light guiding portion 47c that guides the light of the LED 24 to the light emitting portion 47b, and at least a connection portion between the light emitting portion 47b and the light guiding portion 47c. , The thicknesses are different from each other.
  • a reflective sheet 46 is disposed on the back surface of the light guide 47c.
  • a plurality of light guides 47 form a flush light emitting surface (light emitting surface of the entire backlight unit 11).
  • the LED 24 is provided on the LED substrate 14.
  • the LED board 14 and the LED drive circuit board 15 are configured in the same manner as in the first embodiment.
  • the LED substrate 14 is disposed in parallel to the side surface of the light guide 47 c in the light guide 47. Thus, the light of the LED 24 is incident on the side surface of the light guide portion 47c.
  • a substrate 44 is disposed on the lower end side of the light guide portion 47c, and the LED drive circuit substrate 15 is disposed on the surface of the substrate 44.
  • the terminal part 26 of the LED board 14 is mounted on the socket part 30 of the LED drive circuit board 15.
  • the same effects as those of the first embodiment can be obtained by the third embodiment. Furthermore, when a light emission failure of the LED 24 occurs, it is possible to easily replace the LED 24 with a new LED 24 by removing the light guide 47 and detaching the LED board 14 from the LED drive circuit board 15 at that location. Become.
  • the lighting device according to the present invention has been described as the backlight unit used in the liquid crystal display device.
  • the present invention is not limited thereto, and the present invention can be widely applied to lighting devices using LEDs as light sources.
  • the present invention is useful for an illumination device using an LED as a light source and a liquid crystal display device including the illumination device.
  • Liquid crystal display device 10 Liquid crystal display panel 11 Backlight unit (lighting device) 13 Light guide plate 13a side 13b Output surface 13c Bottom 14 LED board 14a Protrusion 15 LED drive circuit board 16 Shading member 16a 1st light-shielding part 16b 2nd light-shielding part 16c opening (transmission part) 24 LED 26 Terminal 28 Circuit board 29 Drive circuit 30 Socket part 31 outlet 33 opening

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention porte sur un appareil d'éclairage, qui comporte des substrats de diodes électroluminescentes et une carte de circuits de commande de diodes électroluminescentes. Des sections de borne connectées électriquement à des diodes électroluminescentes des substrats de diodes électroluminescentes sont formées sur les substrats de diodes électroluminescentes. Des sections de prise connectées électriquement à un circuit de commande, et qui sont configurées de telle sorte que les sections de borne du substrat de diodes électroluminescentes peuvent être fixées à celles-ci, sont formées sur la carte de circuits de commande de diodes électroluminescentes.
PCT/JP2010/006606 2009-12-11 2010-11-10 Appareil d'éclairage et dispositif d'affichage à cristaux liquides le comprenant Ceased WO2011070724A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/514,122 US20120242929A1 (en) 2009-12-11 2010-11-10 Lighting apparatus and liquid crystal display comprising same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009281962 2009-12-11
JP2009-281962 2009-12-11

Publications (1)

Publication Number Publication Date
WO2011070724A1 true WO2011070724A1 (fr) 2011-06-16

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