WO2012096204A1 - Dispositif d'éclairage et dispositif d'affichage - Google Patents

Dispositif d'éclairage et dispositif d'affichage Download PDF

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Publication number
WO2012096204A1
WO2012096204A1 PCT/JP2012/050067 JP2012050067W WO2012096204A1 WO 2012096204 A1 WO2012096204 A1 WO 2012096204A1 JP 2012050067 W JP2012050067 W JP 2012050067W WO 2012096204 A1 WO2012096204 A1 WO 2012096204A1
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WO
WIPO (PCT)
Prior art keywords
light
lens member
lighting device
lens
central axis
Prior art date
Application number
PCT/JP2012/050067
Other languages
English (en)
Japanese (ja)
Inventor
真之助 野澤
Original Assignee
シャープ株式会社
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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 WO2012096204A1 publication Critical patent/WO2012096204A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—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
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs

Definitions

  • the present invention relates to an illuminating device and a display device, and more particularly to an illuminating device and a display device including a light source and a lens member that increases a spread angle of light emitted from the light source.
  • an illumination device including a light source and a lens member that increases a spread angle of light emitted from the light source is known.
  • FIG. 17 is a cross-sectional view showing the structure of a conventional lighting device including an LED (light source) and a lens member.
  • 18 is a cross-sectional view showing the LED and lens member of FIG.
  • an illumination device 1001 according to a conventional example includes a plurality of LEDs (Light Emitting Diodes) 1002 that function as light sources, and a lens member that is disposed on the LED 1002 and increases the spread angle of light emitted from the LED 1002.
  • 1003 a mounting substrate 1004 to which the LED 1002 is attached, an optical sheet 1005 into which light emitted from the LED 1002 (lens member 1003) is incident, and a chassis 1006 that houses the LED 1002, the lens member 1003, and the like.
  • the lens member 1003 is arranged so that the central axis (optical axis) O1001 of the lens member 1003 is perpendicular to the surface of the mounting substrate 1004. That is, the lens member 1003 is disposed so that the central axis O1001 of the lens member 1003 coincides with the central axis (optical axis) of the LED 1002.
  • the lens member 1003 that increases the spread angle of the light emitted from the LED 1002 is provided on the LED 1002, so that the light emitted from the LED 1002 is diffused by the lens member 1003 and is not shown. It progresses to the panel (illuminated member) side. For this reason, it is possible to suppress the occurrence of uneven brightness on the display panel (not shown) to some extent.
  • an illumination device including an LED and a lens member disposed on the LED is disclosed in, for example, Patent Document 1.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illuminating device and a display device capable of suppressing occurrence of luminance unevenness in an illuminated member. It is to be.
  • an illumination device includes a plurality of light sources and a plurality of light sources provided corresponding to each of the plurality of light sources, and increasing a spread angle of light emitted from the light sources.
  • a lens member, and at least one of the lens members is disposed to be inclined with respect to the light source.
  • the illumination device by arranging at least one of the lens members so as to be inclined with respect to the light source, it is possible to control how the light emitted from the light source spreads. . Thereby, it can suppress that the brightness
  • the thickness of an illuminating device is reduced or the space
  • At least one of the lens members is arranged so that the central axis of the lens member is inclined to a predetermined position side with respect to the central axis of the light source. If comprised in this way, the light radiate
  • At least one of the lens members is arranged such that the central axis of the lens member is inclined inward of the illuminating device with respect to the central axis of the light source. If comprised in this way, the light radiate
  • the plurality of light sources and the plurality of lens members are arranged in a predetermined direction, and the lens members at least at both ends in the arrangement direction of the plurality of lens members have the central axis of the lens member as the light source. It is arrange
  • At least one of the lens members is arranged such that the central axis of the lens member is inclined outward of the illuminating device with respect to the central axis of the light source. If comprised in this way, the light radiate
  • the plurality of light sources and the plurality of lens members are arranged in a predetermined direction, and the lens members at least at both ends in the arrangement direction of the plurality of lens members have the central axis of the lens member as the light source. It is arrange
  • the lens member disposed in the outer peripheral portion of the plurality of lens members is compared with the lens member disposed in the central portion of the plurality of lens members.
  • the inclination angle with respect to the light source is large. If comprised in this way, since it can suppress that a brightness nonuniformity generate
  • the inclination angle of the lens member with respect to the light source gradually increases from the center to the outer periphery of the lighting device. If comprised in this way, since the spreading
  • the illumination device preferably further includes a mounting substrate to which a light source is attached, and the lens member is attached to the mounting substrate.
  • the mounting board has a mounting surface to which a light source is attached, and at least one of the lens members is inclined with respect to the mounting surface of the mounting board. So that it is arranged. If comprised in this way, at least 1 of a lens member can be arrange
  • At least one of the lens members is attached to the mounting substrate by a plurality of adhesive layers having different thicknesses. If comprised in this way, at least 1 of a lens member can be easily arrange
  • the lens member can be arranged to be inclined with respect to the light source only by providing a plurality of adhesive layers having different thicknesses. Thereby, even if it is a case where the spreading method of light is controlled for every light source, it is not necessary to form a lens member in a different shape for every light source. For this reason, it can suppress easily that a brightness nonuniformity generate
  • the light source includes a light emitting diode.
  • a light emitting diode when used as a light source, luminance unevenness is likely to occur in a member to be illuminated. Therefore, it is particularly effective to apply the present invention when using a light emitting diode as a light source.
  • the lighting device according to the first aspect is preferably a direct lighting device.
  • the direct illumination device is more likely to cause uneven brightness in the illuminated member than the edge light (side light) illumination device. For this reason, it is particularly effective to apply the present invention when using a direct illumination device.
  • a diffusion plate having a function of diffusing light from the lens member, a function of collecting the light transmitted through the diffusion plate, and a function of diffusing the light transmitted through the diffusion plate
  • an optical sheet having at least one of the functions. If comprised in this way, when the optical sheet has a function which condenses the light which permeate
  • the lighting device according to the first aspect is preferably an edge light type lighting device.
  • the edge light type illumination device for example, spot-like (circular or elliptical) luminance unevenness (spot-like bright part) is likely to occur in the vicinity of the light source in the illuminated member.
  • spot-like luminance unevenness spot-like bright part
  • the lighting device according to the first aspect can control how the light emitted from the light source spreads, when using an edge light type lighting device, a portion near the light source among the members to be illuminated.
  • occurrence of spot-like luminance unevenness can be easily suppressed.
  • a light guide plate having a function of guiding light from the lens member, a function of collecting light transmitted through the light guide plate, and diffusing light transmitted through the light guide plate
  • an optical sheet having at least one of the functions. If comprised in this way, when the optical sheet has a function which condenses the light which permeate
  • each of the light sources includes one or more light emitting units, and at least one of the lens members has a central axis of the lens member with respect to a central axis of the one or more light emitting units. You may arrange
  • a display device includes the illumination device configured as described above and a display panel illuminated by the illumination device. If comprised in this way, the display apparatus which can suppress that a brightness nonuniformity generate
  • the present invention it is possible to easily obtain an illuminating device and a display device capable of suppressing occurrence of luminance unevenness in a member to be illuminated.
  • FIG. 1 is a cross-sectional view illustrating a structure of a liquid crystal display device according to a first embodiment of the present invention. It is the top view which showed the LED package and lens member of FIG. It is the expanded sectional view which showed the structure of the LED package of FIG. 1, and a lens member.
  • FIG. 3 is a cross-sectional view taken along line 100-100 in FIG.
  • FIG. 3 is a cross-sectional view taken along line 150-150 in FIG. It is the expanded sectional view which showed the state arrange
  • FIG. 10 is a cross-sectional view taken along line 200-200 in FIG. 9.
  • FIG. 6 is a cross-sectional view illustrating a structure of a liquid crystal display device according to a fourth embodiment of the present invention. It is the top view which showed the LED package and lens member of FIG. It is the top view which showed the structure of the LED package and lens member of the backlight apparatus by the 1st modification of this invention. It is the expanded sectional view which showed the LED package and light emitting element of FIG.
  • FIG. 16 is an enlarged cross-sectional view illustrating the LED package and the light emitting element of FIG. 15. It is sectional drawing which showed the structure of the illuminating device by a conventional example provided with LED and the lens member. It is sectional drawing which showed LED and the lens member of FIG.
  • the liquid crystal display device 1 constitutes, for example, a liquid crystal television receiver (not shown). As shown in FIG. 1, the liquid crystal display device 1 includes a liquid crystal display panel 2 and a backlight device 3 that is disposed on the lower side (back side) of the liquid crystal display panel 2 and illuminates the liquid crystal display panel 2.
  • the liquid crystal display device 1 is an example of the “display device” in the present invention
  • the liquid crystal display panel 2 is an example of the “display panel” in the present invention.
  • the backlight device 3 is an example of the “illumination device” in the present invention.
  • the liquid crystal display panel 2 includes two glass substrates that sandwich a liquid crystal layer (not shown).
  • the liquid crystal display panel 2 functions as a display panel when illuminated by the backlight device 3.
  • the backlight device 3 is a direct-type backlight device, and includes a plurality of LED packages 4 functioning as point light sources, and a mounting substrate 5 having a mounting surface 5a to which the LED packages 4 are attached.
  • a plurality of lens members 6 provided corresponding to each of the plurality of LED packages 4, a reflection member 7 disposed on the mounting substrate 5, and the lens member 6 and the liquid crystal display panel 2.
  • a diffusing plate 8 and an optical sheet 9 and a backlight chassis 10 for housing the LED package 4 and the reflecting member 7 are included.
  • the LED package 4 is an example of the “light source” and “light emitting diode” in the present invention.
  • the plurality of LED packages 4 are arranged in the longitudinal direction (A direction) and the lateral direction (B direction) of the liquid crystal display panel 2 (see FIG. 1), as shown in FIG.
  • Each of the LED packages 4 includes a light emitting element 4a as shown in FIG.
  • the LED package 4 is configured to include one light emitting element 4a that emits blue light and a phosphor (not shown) that converts part of the blue light into yellow light.
  • the light emitting element 4a is an example of the “light emitting part” in the present invention.
  • the A direction and the B direction are examples of the “predetermined direction” and the “arrangement direction” in the present invention.
  • the LED package 4 is attached to the mounting surface 5a of the mounting substrate 5 using a solder layer (not shown) or the like.
  • the LED package 4 is arranged so that the central axis (optical axis) O1 of the LED package 4 is perpendicular to the mounting surface 5a of the mounting substrate 5.
  • the central axis (optical axis) O1 of the LED package 4 and the central axis (optical axis) O2 of the light emitting element 4a coincide with each other.
  • the light emitted from the LED package 4 is emitted at a predetermined spread angle.
  • the lens member 6 is disposed so as to cover the light emission side (the diffusion plate 8 side) of the LED package 4, and the plurality of lens members 6 are in the A direction and the B direction (FIG. 2) as in the case of the plurality of LED packages 4. See).
  • the lens member 6 is formed of a material (for example, resin or glass) that transmits light emitted from the LED package 4.
  • the lens member 6 has a function of increasing the spread angle of the light emitted from the LED package 4.
  • each lens member 6 includes a lens portion 6a and a plurality of (for example, three) leg portions 6b.
  • the lens portion 6a includes a light emitting surface (upper surface) 6c and a lower surface 6d formed on the side opposite to the light emitting surface 6c.
  • the light emitting surface 6c is formed in a substantially convex shape and is formed so that the spread angle of the light emitted from the lens member 6 is increased.
  • the central portion of the light emitting surface 6c (the surface of the portion facing the LED package 4) is formed in a concave shape.
  • the center part of the light-projection surface 6c does not need to be formed in concave shape.
  • a recess 6e is formed at the center of the lower surface 6d (the surface of the portion facing the LED package 4).
  • the traveling direction of the light emitted from the LED package 4 is changed to the outer side by the recess 6e and the light emitting surface 6c, and the light spreading angle is increased.
  • the recessed part 6e does not need to be formed in the center part of the lower surface 6d.
  • the leg portion 6 b is attached to the mounting surface 5 a of the mounting substrate 5 via the adhesive layer 11. Note that the heights of the legs 6b (the amount of protrusion from the lens 6a) are all the same.
  • the lens member 6 is disposed such that the central axis (optical axis) O11 of the lens member 6 is inclined with respect to the central axis (optical axis) O1 of the LED package 4.
  • the lens member 6 is arranged so that the central axis (optical axis) O11 of the lens member 6 is inclined with respect to the mounting surface 5a of the mounting substrate 5. That is, the lens member 6 is disposed so as to be inclined with respect to the mounting surface 5 a of the LED package 4 and the mounting substrate 5.
  • the leg portion 6b of the lens member 6 is attached to the mounting substrate 5 by a plurality of adhesive layers 11 having different thicknesses (heights).
  • the adhesive layer 11 is made of, for example, a thermosetting resin.
  • the resin adheresive layer 11
  • the plurality of adhesive layers 11 can be easily formed in different thicknesses. It is.
  • the lens member 6 has a central axis O11 of the lens member 6 inclined toward the center side (inside) of the backlight device 3 with respect to the central axis O1 of the LED package 4. Is arranged. Therefore, the lens members 6 at both ends in the A direction (arrangement direction) are arranged so that the central axis O11 of the lens member 6 is inclined toward the central side (inside) in the A direction with respect to the central axis O1 of the LED package 4. Has been.
  • the lens members 6 at both ends in the B direction are arranged so that the central axis O11 of the lens member 6 is inclined toward the central side (inside) in the B direction with respect to the central axis O1 of the LED package 4. ing.
  • the lens member 6 disposed on the outer peripheral portion is compared with the lens member 6 disposed on the central portion of the plurality of lens members 6, and the LED package 4 (central axis).
  • the tilt angle with respect to O1) is large.
  • the inclination angle of the lens member 6 with respect to the LED package 4 (center axis O1) is gradually increased from the central portion of the backlight device 3 toward the outer peripheral portion.
  • the reflecting member 7 is configured to transmit light from the lens member 6 (LED package 4) and light emitted from the lens member 6 (LED package 4) and reflected by the diffusion plate 8 to the upper side (diffuse). It is formed so as to reflect on the plate 8 side.
  • the diffusion plate 8 is formed so as to diffuse the light from the lens member 6 (LED package 4) and the like and to emit the light upward (to the liquid crystal display panel 2 side).
  • the optical sheet 9 has at least one of a function of condensing the light transmitted through the diffusion plate 8 and a function of diffusing the light transmitted through the diffusion plate 8.
  • the optical sheet 9 may be formed of a lens sheet such as a lenticular or microlens sheet.
  • the optical sheet 9 may be formed so that the light incident on the optical sheet 9 is once diffused and condensed when emitted to the liquid crystal display panel 2 side.
  • the optical sheet 9 may be formed of, for example, a diffusion sheet having a function of diffusing incident light.
  • the optical sheet 9 may be formed of a plurality of sheet materials including a microlens sheet and a diffusion sheet.
  • the lens member 6 is tilted toward the center side (inside) of the backlight device 3 with respect to the center axis O11 of the LED package 4 with respect to the center axis O11 of the LED package 4. Deploy. As a result, the light emitted from the LED package 4 can be easily advanced to the center side (inside) of the backlight device 3, so that a low-luminance portion occurs in the center side (inside) region of the liquid crystal display panel 2. Can be suppressed. As a result, it is possible to suppress the occurrence of, for example, lattice-like luminance unevenness (grid-like dark portion) in the liquid crystal display panel 2.
  • the backlight device 3 it is possible to suppress the occurrence of luminance unevenness in the liquid crystal display panel 2, so that the thickness of the backlight device 3 is reduced or the interval between the LED packages 4 is increased. (The number of LED packages 4 can be reduced).
  • the lens members 6 at both ends in the A direction and the B direction are arranged such that the center axis O11 of the lens member 6 is the center of the backlight device 3 with respect to the center axis O1 of the LED package 4. Arrange so as to incline to the side (inside). Thereby, it can suppress that a brightness
  • the lens member 6 disposed on the outer peripheral portion is in comparison with the lens member 6 disposed on the central portion with respect to the LED package 4 (central axis O1).
  • the tilt angle is large. Thereby, it is possible to suppress the occurrence of luminance unevenness in the liquid crystal display panel 2 while suppressing the luminance of the central portion of the liquid crystal display panel 2 from being lowered, which is effective.
  • the inclination angle of the lens member 6 with respect to the LED package 4 is gradually increased from the center portion of the backlight device 3 toward the outer peripheral portion. As a result, it is possible to gradually change the way in which the light emitted from the LED package 4 spreads from the central part to the outer peripheral part of the backlight device 3, so that uneven brightness occurs in the liquid crystal display panel 2. Can be suppressed.
  • the lens member 6 is attached to the mounting substrate 5 as described above. Thereby, since it is not necessary to align the LED package 4 and the lens member 6 after the lens member 6 is attached to the mounting substrate 5, it is possible to prevent the assembly process of the backlight device 3 from becoming complicated. it can. Further, the lens member 6 can be prevented from being displaced with respect to the LED package 4.
  • the lens member 6 is attached to the mounting substrate 5 with the plurality of adhesive layers 11 having different thicknesses. Thereby, the lens member 6 can be easily arranged so as to be inclined with respect to the LED package 4 and the mounting substrate 5.
  • the lens member 6 can be disposed so as to be inclined with respect to the LED package 4 only by providing a plurality of adhesive layers 11 having different thicknesses. Thereby, even if it is a case where the spreading method of light is controlled for every LED package 4, it is not necessary to form the lens member 6 in a different shape for every LED package 4. FIG. For this reason, it is possible to easily suppress the occurrence of luminance unevenness in the liquid crystal display panel 2 while suppressing an increase in the number of parts and cost.
  • the light emitting diode (LED package 4) is used as the light source.
  • the light emitting diode (LED package 4) is used as the light source, luminance unevenness is likely to occur in the liquid crystal display panel 2. Therefore, when the light emitting diode (LED package 4) is used as the light source, the present invention is applied. It is particularly effective.
  • the direct-type backlight device 3 is more likely to cause uneven brightness in the liquid crystal display panel 2 than the edge light type (side light type) backlight device. For this reason, it is particularly effective to apply the present invention when the direct type backlight device 3 is used.
  • the optical sheet 9 is disposed between the diffusion plate 8 and the liquid crystal display panel 2 as described above.
  • the optical sheet 9 has a function of condensing the light transmitted through the diffusion plate 8 (when the optical sheet 9 is a lens sheet, for example)
  • the luminance in the front direction of the liquid crystal display panel 2 can be improved. it can.
  • the optical sheet 9 has a function of diffusing the light transmitted through the diffusion plate 8 (when the optical sheet 9 is a lens sheet or a diffusion sheet having a function of diffusing the incident light)
  • the liquid crystal display panel 2 is used. The occurrence of uneven brightness can be further suppressed.
  • the lens member 6 is disposed so as to be inclined to the outside of the backlight device with respect to the LED package 4. The case will be described.
  • the lens member 6 is disposed so as to be inclined outward with respect to the LED package 4.
  • the lens member 6 is disposed so that the central axis O11 of the lens member 6 is inclined to the outside (four sides) of the backlight device with respect to the central axis O1 of the LED package 4. Therefore, the lens members 6 at both ends in the A direction (arrangement direction) are arranged so that the central axis O11 of the lens member 6 is inclined outward in the A direction with respect to the central axis O1 of the LED package 4.
  • the lens members 6 at both ends in the B direction (arrangement direction) are arranged so that the central axis O11 of the lens member 6 is inclined outward in the B direction with respect to the central axis O1 of the LED package 4.
  • the lens member 6 disposed in the outer peripheral portion of the plurality of lens members 6 is compared with the lens member 6 disposed in the central portion of the plurality of lens members 6.
  • the inclination angle with respect to the LED package 4 (center axis O1) is large.
  • the inclination angle of the lens member 6 with respect to the LED package 4 (center axis O1) is gradually increased from the central portion of the backlight device 3 toward the outer peripheral portion.
  • the lens member 6 is arranged so that the central axis O11 of the lens member 6 is inclined outward (four sides) of the backlight device with respect to the central axis O1 of the LED package 4. Deploy. Thereby, since the light radiate
  • the lens members 6 at both ends in the A direction and the B direction are arranged so that the center axis O11 of the lens member 6 is outside the backlight device with respect to the center axis O1 of the LED package 4. Arrange them so that they tilt. As a result, it is possible to effectively suppress the occurrence of a low-luminance portion in the region outside the liquid crystal display panel 2, so that, for example, a frame-like luminance unevenness occurs in the liquid crystal display panel 2. , Can be effectively suppressed.
  • the lens member 206a at the four corners of the lens member 6 has a central axis O11 of the lens member 206a.
  • the lens members 206b arranged at the corners other than the four corners of the lens member 6 are arranged such that the central axis O11 of the lens member 206b coincides with the central axis O1 of the LED package 4.
  • only one lens member 6 (206a) is disposed so as to be inclined with respect to the LED package 4 at each corner (each corner portion).
  • the lens member 6 may be arranged so as to be inclined with respect to the LED package 4.
  • the lens member 206a at the four corners is tilted toward the four corners of the backlight device with respect to the central axis O11 of the LED member 4 with respect to the central axis O1 of the LED package 4. Deploy. Thereby, since the light radiate
  • the liquid crystal display device 301 is configured by a liquid crystal display panel 2 and a backlight device 303 that illuminates the liquid crystal display panel 2, as shown in FIG.
  • the liquid crystal display device 301 is an example of the “display device” in the present invention
  • the backlight device 303 is an example of the “illumination device” in the present invention.
  • the backlight device 303 is an edge light type backlight device, and includes a plurality of LED packages 4, a mounting substrate 5, a plurality of lens members 6, a reflecting member 307, and a lens.
  • a light guide plate 308 that guides light from the member 6 (LED package 4) and emits the light toward the liquid crystal display panel 2, the optical sheet 9 disposed between the light guide plate 308 and the liquid crystal display panel 2, and a backlight chassis 10 and so on.
  • the plurality of LED packages 4 and the plurality of lens members 6 are arranged, for example, in the longitudinal direction (A direction) of the liquid crystal display panel 2 (see FIG. 11), as shown in FIG.
  • the lens member 6 is arrange
  • the other structure of the fourth embodiment is the same as that of the first to third embodiments.
  • the present invention is applied to the edge light type backlight device 303.
  • the edge light type backlight device 303 for example, spot-like (circular or elliptical) luminance unevenness (spot-like bright part) is likely to occur in the vicinity of the LED package 4 in the liquid crystal display panel 2.
  • spot-like luminance unevenness spot-like bright part
  • the backlight device 303 according to the fourth embodiment can control the way in which the light emitted from the LED package 4 spreads, a portion of the liquid crystal display panel 2 in the vicinity of the LED package 4 has a spot shape, for example. The occurrence of uneven brightness can be easily suppressed.
  • the display device is applied to a liquid crystal display device.
  • the present invention is not limited thereto, and may be applied to a display device other than the liquid crystal display device.
  • the backlight apparatus which illuminates a display panel was demonstrated as an example of an illuminating device, this invention is applicable not only to this but the illuminating device which illuminates to-be-illuminated members other than a display panel. It is.
  • the light source is shown as an example configured to include one light emitting element that emits blue light and a phosphor that converts part of the blue light into yellow light.
  • the present invention is not limited to this, and the light source may be configured to include two or more light emitting elements.
  • the first modification of the present invention shown in FIGS. 13 and 14 and the second modification of the present invention shown in FIGS. 15 and 16 may be configured.
  • the LED package 404 is formed to include, for example, three light emitting elements (light emitting portions) 404a, 404b, and 404c that emit red light, green light, and blue light, respectively.
  • the lens member 6 may be disposed such that the central axis of the lens member 6 is inclined with respect to the central axis O401 of the three light emitting elements 404a, 404b, and 404c.
  • an LED package 504a including a light emitting element 404a, an LED package 504b including a light emitting element 404b, and an LED package 504c including a light emitting element 404c constitute a light source, and a lens.
  • the member 6 may be disposed such that the central axis of the lens member 6 is inclined with respect to the central axis O501 of the three light emitting elements 404a, 404b, and 404c.
  • the lens member may be formed so as to include a plurality of legs having different heights.
  • the thickness of the adhesive layer may be the same (uniform).
  • the lens member is provided with the leg portion.
  • the present invention is not limited thereto, and the lens member may not be provided with the leg portion.
  • lens member was shown about the example attached to the mounting board using the contact bonding layer, this invention is not restricted to this, A lens member is attached to a mounting board without using an contact bonding layer. May be.
  • an engaging portion that engages with a mounting substrate or the like may be provided on the leg portion of the lens member.
  • the example which formed the contact bonding layer with the thermosetting resin was shown, for example, this invention is not restricted to this, You may form an contact bonding layer other than a thermosetting resin.
  • the adhesive layer may be formed with an adhesive tape.
  • the adhesive layer having a small thickness may be formed by one layer, and the adhesive layer having a large thickness may be formed by a plurality of layers.
  • the present invention is not limited thereto.
  • the inclination angle of the lens member with respect to the LED package does not have to be gradually increased from the center portion of the backlight device toward the outer peripheral portion.
  • the inclination angle of some or all lens members with respect to the LED package may be the same.
  • the lens member is attached to the mounting substrate.
  • the present invention is not limited thereto, and the lens member may be attached to a member other than the mounting substrate, such as a backlight chassis. Good.
  • the optical sheet is disposed between the diffusion plate or the light guide plate and the liquid crystal display panel.
  • the present invention is not limited thereto, and the diffusion plate or the light guide plate and the liquid crystal display panel It is not necessary to arrange an optical sheet between them.
  • 1,301 Liquid crystal display device 2 Liquid crystal display panel (display panel) 3,303 Backlight device (lighting device) 4, 404, 504a, 504b, 504c LED package (light source, light emitting diode) 4a, 404a, 404b, 404c Light emitting element (light emitting part) 5 Mounting substrate 5a Mounting surface 6, 206a Lens member 8 Diffusion plate 9 Optical sheet 11 Adhesive layer 308 Light guide plate O1, O11, O401, O501 Central axis

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention porte sur un dispositif d'éclairage qui peut supprimer l'apparition d'une irrégularité de luminosité dans un élément éclairé. Le dispositif d'éclairage par l'arrière (dispositif d'éclairage) (3) est pourvu : d'une pluralité d'ensembles diodes électroluminescentes (4) ; d'une pluralité d'éléments de lentille (6) qui sont disposés, respectivement, en correspondance avec la pluralité d'ensemble diodes électroluminescentes et qui augmentent l'angle de divergence de la lumière rayonnée par les ensembles diodes électroluminescentes. Les éléments de lentille sont disposés de manière à être en oblique par rapport aux ensembles diodes électroluminescentes.
PCT/JP2012/050067 2011-01-12 2012-01-05 Dispositif d'éclairage et dispositif d'affichage WO2012096204A1 (fr)

Applications Claiming Priority (2)

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JP2011004240 2011-01-12
JP2011-004240 2011-01-12

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014022252A (ja) * 2012-07-20 2014-02-03 Mitsubishi Electric Corp 発光装置
JP2016149264A (ja) * 2015-02-12 2016-08-18 パナソニックＩｐマネジメント株式会社 照明装置、照明システム及び移動体
CN106125396A (zh) * 2015-05-08 2016-11-16 三星电子株式会社 显示装置
US20230400732A1 (en) * 2021-03-01 2023-12-14 Beijing Boe Display Technology Co., Ltd. Light emitting module and display module
WO2024053465A1 (fr) * 2022-09-08 2024-03-14 日亜化学工業株式会社 Module électroluminescent

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005228540A (ja) * 2004-02-12 2005-08-25 Miyota Kk サイドライト型面光源装置
JP2006019027A (ja) * 2004-06-30 2006-01-19 Nippon Seiki Co Ltd 照明装置
JP2006228576A (ja) * 2005-02-17 2006-08-31 Sony Corp バックライト装置及び液晶表示装置
JP2008103300A (ja) * 2006-09-21 2008-05-01 Toshiba Lighting & Technology Corp Ｌｅｄモジュール及び照明器具
JP2008181981A (ja) * 2007-01-24 2008-08-07 Matsushita Electric Ind Co Ltd 半導体装置及びその製造方法
JP2009043628A (ja) * 2007-08-09 2009-02-26 Sharp Corp 発光装置およびこれを備える照明装置
JP2010092700A (ja) * 2008-10-07 2010-04-22 Idec Corp Ｌｅｄ照明装置の配光構造
JP2010212021A (ja) * 2009-03-09 2010-09-24 Harison Toshiba Lighting Corp 車両用照明装置
WO2010146895A1 (fr) * 2009-06-15 2010-12-23 シャープ株式会社 Dispositif d'éclairage, dispositif d'affichage et récepteur de télévision

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005228540A (ja) * 2004-02-12 2005-08-25 Miyota Kk サイドライト型面光源装置
JP2006019027A (ja) * 2004-06-30 2006-01-19 Nippon Seiki Co Ltd 照明装置
JP2006228576A (ja) * 2005-02-17 2006-08-31 Sony Corp バックライト装置及び液晶表示装置
JP2008103300A (ja) * 2006-09-21 2008-05-01 Toshiba Lighting & Technology Corp Ｌｅｄモジュール及び照明器具
JP2008181981A (ja) * 2007-01-24 2008-08-07 Matsushita Electric Ind Co Ltd 半導体装置及びその製造方法
JP2009043628A (ja) * 2007-08-09 2009-02-26 Sharp Corp 発光装置およびこれを備える照明装置
JP2010092700A (ja) * 2008-10-07 2010-04-22 Idec Corp Ｌｅｄ照明装置の配光構造
JP2010212021A (ja) * 2009-03-09 2010-09-24 Harison Toshiba Lighting Corp 車両用照明装置
WO2010146895A1 (fr) * 2009-06-15 2010-12-23 シャープ株式会社 Dispositif d'éclairage, dispositif d'affichage et récepteur de télévision

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014022252A (ja) * 2012-07-20 2014-02-03 Mitsubishi Electric Corp 発光装置
JP2016149264A (ja) * 2015-02-12 2016-08-18 パナソニックＩｐマネジメント株式会社 照明装置、照明システム及び移動体
CN106125396A (zh) * 2015-05-08 2016-11-16 三星电子株式会社 显示装置
US20230400732A1 (en) * 2021-03-01 2023-12-14 Beijing Boe Display Technology Co., Ltd. Light emitting module and display module
WO2024053465A1 (fr) * 2022-09-08 2024-03-14 日亜化学工業株式会社 Module électroluminescent

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