WO2017024654A1 - 导光板和背光模组 - Google Patents

导光板和背光模组 Download PDF

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Publication number
WO2017024654A1
WO2017024654A1 PCT/CN2015/089391 CN2015089391W WO2017024654A1 WO 2017024654 A1 WO2017024654 A1 WO 2017024654A1 CN 2015089391 W CN2015089391 W CN 2015089391W WO 2017024654 A1 WO2017024654 A1 WO 2017024654A1
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Prior art keywords
light
main body
guide plate
backlight module
microstructure
Prior art date
Application number
PCT/CN2015/089391
Other languages
English (en)
French (fr)
Inventor
程艳
Original Assignee
深圳市华星光电技术有限公司
武汉华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司, 武汉华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/909,100 priority Critical patent/US20170168214A1/en
Publication of WO2017024654A1 publication Critical patent/WO2017024654A1/zh

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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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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
    • G02B6/0003—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 doped with fluorescent agents
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G02F1/133507—Films for enhancing the luminance
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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 the field of display technologies, and in particular, to a light guide plate and a backlight module.
  • the color gamut level of mainstream liquid crystal display devices (including flat panel display devices) on the market is only about 72% or even lower.
  • Quantum Dot (QD) backlight technology came into being, which can increase the color gamut of display products to 100%, greatly enriching the performance of display products.
  • QD Quantum Dot
  • the internal color difference is large due to the uneven distribution of quantum dots on the film or the difference in excitation efficiency between the edge of the film and the quantum dot at the center.
  • the quantum dots are far away from the excitation source, the light conversion efficiency is very low, resulting in lower brightness of the entire module.
  • the technical problem to be solved by the present invention is to provide a light guide plate and a backlight module, which can improve color uniformity.
  • a light guide plate including a main body and a fluorescent layer, the main body including a light emitting surface, a bottom surface, a first side surface, and a second side surface, the first side surface being disposed opposite to the second side surface and connected to the Between the light-emitting surface and the bottom surface, the fluorescent layer is located on the light-emitting surface, the fluorescent layer comprises a plurality of microstructures arranged side by side, the microstructures are encapsulated with quantum dots, and the microstructures comprise microstructures The light incident surface is disposed on the light emitting surface, and the microstructure is thin at both ends in a direction perpendicular to the light incident surface of the microstructure.
  • the first side is a light incident surface of the main body, a light incident direction of the main body and the The light exiting direction of the main body is perpendicular, and the size of the microstructured light incident surface ranges from 25 to 75 micrometers in the light incident direction of the main body.
  • the second side is provided with a reflective layer.
  • the microstructure extends in a direction perpendicular to the light incident direction of the body.
  • the plurality of microstructures are continuously arranged in the light incident direction of the body.
  • the microstructure has a triangular prism structure.
  • a backlight module including a first light source and a light guide plate
  • the light guide plate includes a main body and a fluorescent layer
  • the main body includes a light emitting surface, a bottom surface, a first side surface, and a second side surface, a side surface is disposed opposite to the second side surface and connected between the light emitting surface and the bottom surface
  • the first light source is disposed adjacent to the first side surface
  • the fluorescent layer is located on the light emitting surface
  • the fluorescent layer a plurality of side-by-side arranged microstructures, wherein the microstructures are encapsulated with quantum dots, the microstructures include microstructured light incident surfaces, and the microstructured light incident surfaces are disposed on the light exiting surface, the microstructures
  • the thickness is thin at both ends in a direction perpendicular to the light incident surface of the microstructure.
  • the first side surface is a light incident surface of the main body, and a light incident direction of the main body is perpendicular to a light exiting direction of the main body, and the microstructure is incident on a light surface in a light incident direction of the main body. Sizes range from 25 to 75 microns.
  • the second side is provided with a reflective layer.
  • the microstructure extends in a direction perpendicular to the light incident direction of the body.
  • the plurality of microstructures are continuously arranged in the light incident direction of the body.
  • the microstructure has a triangular prism structure.
  • the number of the main bodies is two, and the second side of each of the main bodies is provided with a reflective layer, and the two reflective layers are attached to each other, and the light emitting surfaces of the two main bodies are coplanar.
  • the bottom surfaces of the two bodies are also coplanar, the fluorescent layer covers the light emitting surfaces of the two bodies, the backlight module further includes a second light source, and the second light source and the first light source are oppositely disposed. And respectively located on both sides of the light guide plate.
  • an adhesive layer is disposed between the two reflective layers.
  • the bottom surface of the light guide plate is provided with a reflective plate.
  • the present invention has the following beneficial effects:
  • the invention encapsulates the quantum dots in a plurality of microstructures, on the plane where the microstructures are incident on the light surface,
  • the spacing between the adjacent microstructures is only 25 to 75 microns. Due to the small size of the microstructure, the types and proportions of the quantum dots encapsulated therein are easily configurable and controlled, and the phosphor layers on the entire light guide plate are regularly controlled by a plurality of microstructures.
  • the side by side composition greatly improves the uniformity of the light color of the light guide plate. Further, since the microstructure is perpendicular to the light incident surface of the microstructure, the thin cross-section shape is thick at both ends, which can play a role of light gathering and increase the light-emitting brightness of the light guide plate.
  • the arrangement of the light guide plate structure improves the brightness and the uniformity of the light color of the backlight module using the light guide plate structure, and the backlight module has better display quality.
  • the light exit surface of the light guide plate is emitted and then enters the phosphor layer, and the light emitted by the light source is converted into light of different wavelengths by the quantum dots.
  • the reflector is configured to reflect the light exposed by the bottom surface back into the main body of the light guide plate
  • the reflective layer is configured to reflect the light exposed by the second side surface back into the main body of the light guide plate, so that the light can be taken out twice, thereby improving the use efficiency of the light and the light.
  • the phosphor layer is excited multiple times, which increases the luminous efficiency of the quantum dots and further increases the brightness of the backlight module.
  • FIG. 1 is a schematic structural view of a light guide plate according to an embodiment of the present invention.
  • Figure 2 is an enlarged view of the structure at A in Figure 1.
  • FIG. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another backlight module according to an embodiment of the present invention.
  • Figure 5 is an enlarged plan view showing the structure of B in Figure 4 .
  • FIG. 1 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of An enlarged view of the structure at A in Fig. 1.
  • the embodiment of the present invention provides a light guide plate.
  • the light guide plate includes a main body 2 and a fluorescent layer 1 .
  • the main body 2 includes a light emitting surface 24 , a bottom surface 23 , a first side surface 21 , and a second side surface 22 .
  • the phosphor layer 1 is disposed on the light-emitting surface 24 opposite to the second side surface 22 and connected between the light-emitting surface 24 and the bottom surface 23.
  • the phosphor layer 1 includes a plurality of microstructures 12 arranged side by side. As shown in FIG. 2, the microstructures 12 are encapsulated with quantum dots 11, and the microstructures 12 include microstructures into the light surface, and the microstructured light incident surface is disposed on the light exit surface 24. And the microstructure 12 is thin at both ends in a direction perpendicular to the light incident surface of the microstructure. It can be understood that the “thickness at both ends of the middle thickness” refers to a direction perpendicular to the light incident surface of the microstructure, and the distance between the central top end of the microstructure and the light incident surface of the microstructure is greater than the distance between the top sides of the middle portion of the microstructure. The distance of the structure into the light surface, the structure can play a role of light gathering, increasing the brightness of the light guide plate.
  • the quantum dots 11 encapsulated within the microstructures 12 include large particle quantum dots 112 and small particle quantum dots 111.
  • the emission spectrum of the quantum dot 11 can be controlled by changing the size of the quantum dot 11.
  • the size of the quantum dot can be changed to make the emission spectrum cover the entire visible region, so the arrangement and distribution of quantum dots of different particle sizes directly affect the light guide plate. Luminous quality.
  • the quantum dots 11 are respectively packaged in the plurality of microstructures 12.
  • the size of the microstructures 12 is small, the types and proportions of the quantum dots 11 encapsulated therein are easily configurable and controlled, and the entire fluorescent layer 1 is composed of multiple micro
  • the structure 12 is regularly arranged side by side, which greatly improves the uniformity of the light color of the light guide plate, so that the light guide plate can have better display quality.
  • the first side surface 21 of the main body 2 is a light incident surface of the main body 2, and the light incident direction of the main body 2 is perpendicular to the light exiting direction of the main body 2.
  • the size of the light incident surface of the microstructure 12 is : 25 to 75 microns.
  • the microstructure 12 is small to micron to further ensure the uniformity of the light color of the light guide plate.
  • the second side 22 of the main body 2 is provided with a reflective layer for reflecting the light exposed by the first side surface 22 back into the main body 2, so that the light can be taken out twice, and the light is improved.
  • the use efficiency the light is excited by the fluorescent layer 1 after being reflected, the luminous efficiency of the quantum dot 11 is increased, and the brightness of the light guide plate is further increased.
  • the material of the first reflective layer may be a material having a light reflecting function such as silver or barium sulfate.
  • the microstructures 12 extend in a direction perpendicular to the direction of light entering the body 2. Further, the microstructures 12 are successively arranged in the light incident direction of the body 2.
  • the microstructures 12 are in the shape of a triangular prism, and one of the sides of the triangular prism is a light incident surface of the microstructure 12. It can be understood that the microstructure 12 can also be a structure whose other cross-sectional shape is thin at both ends of the intermediate thickness, such as a semi-cylindrical body, a trapezoidal body or the like. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the invention.
  • the packaging material of the microstructure 12 may be made of silica gel or other transparent material that can block water oxygen to protect the quantum dots 11. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the invention.
  • FIG. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
  • the embodiment of the invention provides a backlight module, which comprises a light guide plate, a first light source 3 and a reflection plate 5.
  • the light guide plate includes a main body 2 and a fluorescent layer 1.
  • the main body 2 includes a light emitting surface 24, a bottom surface 23, a first side surface 21 and a second side surface 22.
  • the first side surface 21 and the second side surface 22 are opposite to each other and are connected to the light emitting surface 24 and Between the bottom surfaces 23, a phosphor layer is located on the light exit surface 24.
  • the first light source 3 is disposed adjacent to the first side surface 21, and the second side surface 22 is coated with a reflective layer 4, and the reflecting plate 5 is disposed adjacent to the bottom surface 23.
  • the arrangement of the phosphor layer 1 is identical to the above embodiment and will not be described in detail herein.
  • the first light source 3 emits light from the first side surface 21 into the light guide plate body 2, is emitted from the light exit surface 24, enters the phosphor layer 1, and then passes through the quantum dot 11 to the first light source 3.
  • the emitted light is converted into light of different wavelengths, and the reflecting plate 5 is for reflecting the light exposed by the bottom surface 23 back into the main body 2, and the reflecting layer 4 is for reflecting the light exposed by the second side surface 22 back into the main body 2, so that The light can be taken out twice, the use efficiency of the light is improved, and the fluorescent layer 1 is excited by the light after being reflected, which increases the luminous efficiency of the quantum dot 11 and further increases the brightness of the backlight module.
  • the backlight module adopts the fluorescent layer 1 described in the foregoing embodiment
  • the structure of the fluorescent layer 1 improves the brightness and the uniformity of the light color of the backlight module, and the backlight module has better display quality.
  • the first light source 3 is a blue light emitting diode.
  • the large particle quantum dots 112 can convert the light emitted by the standard blue light emitting diode into a wavelength of light (such as red light), and the small particle quantum dot 111 can convert the light emitted by the standard blue light emitting diode into a short light.
  • Wavelength light such as green light
  • the mixing of quantum dots of different particles forms a new spectrum
  • High-quality three primary colors of white light can be realized by using a standard blue light-emitting diode light source, so that the display performance of the display device using the backlight template reaches a new level.
  • the backlight module further includes an optical film 3 disposed on a side of the light guide plate facing away from the reflective plate 5, the optical film 3 including the diffusion film 62, and the fluorescent layer 1 and the diffusion layer
  • the diffusion film 62 can improve the uniform diffusion effect of the backlight light distribution, and can increase the light transmittance to produce high brightness.
  • the upper prism film 61 and the lower prism film 63 have an effect of improving the optical performance of the backlight module.
  • the backlight module includes a light guide plate, a first light source 3, a second light source 3', and a reflection plate 5.
  • the light guide plate includes a first body 2, a second body 2', and a fluorescent layer 1.
  • the first body 2 includes a light-emitting surface 24, a bottom surface 23, a first side surface 21, and a second side surface 22.
  • the first side surface 21 and the second side surface 22 are oppositely disposed and connected to the light-emitting surface 24 and the bottom surface 23 between.
  • the second body 2' includes a light-emitting surface 24', a bottom surface 23', a first side 2', and a second side 22'.
  • the first side 21' is opposite to the second side 22' and is connected to the light.
  • the second side surface 22 and the second side surface 22' are respectively coated with a reflective layer 4 and a reflective layer 2', and the reflective layer 4 and the reflective layer 2' are disposed to each other, and the light emitting surface 24 and the light emitting surface are respectively disposed.
  • the two 24' coplanar surfaces, the bottom surface one 23 and the bottom surface two 23' are coplanar, and the fluorescent layer 1 covers the smooth surface 24 and the light exit surface 24'.
  • the first light source 3 and the second light source 3' are disposed opposite to each other and are respectively located at two sides of the light guide plate.
  • the reflecting plate 5 is disposed on the bottom surface of the light guiding plate for reflecting light exposed from the bottom surface 23 and the bottom surface 23' back into the first body 2 and the second body 2'.
  • the first light source 3 emits light through the first side surface 21, the first body 2 and the light exit surface 24, and then enters the phosphor layer 1, and the second light source 3' emits light through the first side.
  • the second 21', the second body 2' and the light-emitting surface 24' enter the phosphor layer 1, the light-excited quantum dots 11 entering the phosphor layer 1 emit light of different wavelengths.
  • the reflective layer 4 is configured to reflect the light exposed by the second side surface 22 into the first body 2, and the reflective layer 2' is used to reflect the light exposed by the second side surface 22' back into the second body 2' to make the light It can be taken out twice, which improves the use efficiency of light.
  • the fluorescent layer 1 is excited a plurality of times, which increases the luminous efficiency of the quantum dot 11 and further increases the brightness of the backlight module.
  • the backlight module adopts the fluorescent layer 1 described in the foregoing embodiment, the fluorescent layer 1 is knotted.
  • the configuration of the backlight improves the brightness of the backlight module and the uniformity of the color of the light, and the backlight module has better display quality.
  • an adhesive layer is further provided between the reflective layer 4 and the reflective layer 2', and the adhesive layer is used to bond the first body 2 and the second body 2'.
  • the adhesive layer may be a single layer or may be composed of an adhesive layer 7 coated on the reflective layer 4 and an adhesive layer 2' on the coated reflective layer 2'.
  • the first light source 3 and the second light source 3' are both blue light emitting diodes.
  • other light sources may be employed as the first light source.
  • the backlight module further includes an optical film 3 disposed on a side of the light guide plate facing away from the reflective plate 5, the optical film 3 including the diffusion film 62, and the fluorescent layer 1 and the diffusion layer
  • the diffusion film 62 can improve the uniform diffusion effect of the backlight light distribution, and can increase the light transmittance to produce high brightness.
  • the upper prism film 61 and the lower prism film 63 have an effect of improving the optical performance of the backlight module.

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

Abstract

一种导光板和背光模组，所述导光板包括主体（2）和荧光层（1），所述主体（2）包括出光面（24）、底面（23）、第一侧面（21）和第二侧面（22），所述第一侧面（21）与所述第二侧面（22）相对设置且连接于所述出光面（24）与所述底面（23）之间，所述荧光层（1）位于所述出光面（24）上，所述荧光层（1）包括多个并排布置的微结构（12），所述微结构（12）内封装有量子点（11），所述微结构（12）包括微结构（12）入光面，所述微结构（12）入光面设于所述出光面（24）上，所述微结构（12）在垂直于所述微结构（12）入光面的方向上中间厚两端薄。

Description

导光板和背光模组
本发明要求2015年8月12日递交的发明名称为“导光板和背光模组”的申请号201510492762.2的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及显示技术领域，尤其涉及一种导光板和一种背光模组。
背景技术
目前，市面上主流液晶显示器件(包括平板显示设备)的色域水平仅在72％左右，甚至更低。为了提高色域，量子点(Quantum Dot，QD)背光源技术应运而生，能够将显示产品的色域提高至100％，极大地丰富了显示产品的表现能力。但是，采用量子点的背光模组，由于量子点在薄膜上分布不均匀或者薄膜边缘与中心的量子点激发效率存在差异，内部色差偏大。同时因为量子点离激发光源较远，光转换效率很低，导致整个模组亮度较低。
因此，有必要对现有技术进行改进以提高产品色均匀度。
发明内容
本发明所要解决的技术问题在于提供一种导光板和一种背光模组，能够提高色均匀度。
为了实现上述目的，本发明实施方式采用如下技术方案：
一方面，提供一种导光板，包括主体和荧光层，所述主体包括出光面、底面、第一侧面和第二侧面，所述第一侧面与所述第二侧面相对设置且连接于所述出光面与所述底面之间，所述荧光层位于所述出光面上，所述荧光层包括多个并排布置的微结构，所述微结构内封装有量子点，所述微结构包括微结构入光面，所述微结构入光面设于与所述出光面上，所述微结构在垂直于所述微结构入光面的方向上中间厚两端薄。
优选的，所述第一侧面为所述主体的入光面，所述主体的入光方向与所述 主体的出光方向垂直，在所述主体的入光方向上，所述微结构入光面的尺寸范围为：25至75微米。
优选的，所述第二侧面上设有反射层。
优选的，所述微结构在垂直于所述主体的入光方向的方向上延伸。
优选的，所述多个微结构在所述主体的入光方向上连续布置。
优选的，所述微结构呈三棱柱状结构。
另一方面，还提供一种背光模组，包括第一光源和导光板，所述导光板包括主体和荧光层，所述主体包括出光面、底面、第一侧面和第二侧面，所述第一侧面与所述第二侧面相对设置且连接于所述出光面与所述底面之间，所述第一光源靠近所述第一侧面设置，所述荧光层位于出光面上，所述荧光层包括多个并排布置的微结构，所述微结构内封装有量子点，所述微结构包括微结构入光面，所述微结构入光面设于与所述出光面上，所述微结构在垂直于所述微结构入光面的方向上中间厚两端薄。
优选的，所述第一侧面为所述主体的入光面，所述主体的入光方向与所述主体的出光方向垂直，在所述主体的入光方向上，所述微结构入光面的尺寸范围为：25至75微米。
优选的，所述第二侧面上设有反射层。
优选的，所述微结构在垂直于所述主体的入光方向的方向上延伸。
优选的，所述多个微结构在所述主体的入光方向上连续布置。
优选的，所述微结构呈三棱柱状结构。
优选的，所述主体的数量为两个，每个所述主体的第二侧面均设有反射层，所述两个反射层相互贴合，所述两个主体的所述出光面共面，所述两个主体的底面亦共面，所述荧光层覆盖所述两个主体的出光面，所述背光模组还包括第二光源，所述第二光源和所述第一光源相对设置，且分别位于所述导光板的两侧。
优选的，所述的两个反射层之间设置有粘着层。
优选的，所述导光板的底面设置有反射板。
相较于现有技术，本发明具有以下有益效果：
本发明将量子点封装在多个微结构中，在微结构入光面所在的平面上，相 邻的微结构之间的间距仅为25至75微米，由于微结构尺寸小，其内封装的量子点的种类及比例易调配和控制，且整个导光板上荧光层由多个微结构有规律地并排组成，极大地提高了导光板的出光色均匀度。进一步的，由于微结构垂直于微结构入光面的方向上呈中间厚两端薄的截面形状，能够起到光线聚集作用，增加导光板的出光亮度。
导光板结构的设置提高了采用所述导光板结构的背光模组的亮度和出光色均匀度，背光模组具备更佳的显示质量。
进一步的，由于从光源发出光线自导光板主体入光面进入导光板，从导光板主体出光面发射出后进入荧光层，再通过量子点将光源所发出的光转化成不同波长的光发射出去，反射板用于将底面露出的光反射回导光板主体中，反射层用于将第二侧面露出的光反射回导光板主体中，使光可以二次取出，提高了光的使用效率，光线经反射后多次激发荧光层，增加了量子点的发光效率，进一步增加了背光模组的亮度。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以如这些附图获得其他的附图。
图1是本发明实施例提供的一种导光板结构示意图。
图2是图1中A处结构的放大视图。
图3是本发明实施例提供的一种背光模组的结构示意图。
图4是本发明实施例提供的另一种背光模组的结构示意图。
图5是图4中B处结构的放大视图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
参阅图1-2，图1为本发明实施例提供的一种导光板结构示意图，图2为 图1中A处结构的放大视图。本发明实施例提供一种导光板，如图1所示，导光板包括主体2和荧光层1，主体2包括出光面24、底面23、第一侧面21和第二侧面22，第一侧面21与第二侧面22相对设置且连接于出光面24与底面23之间，荧光层1位于出光面24上。
荧光层1包括多个并排布置的微结构12，如图2所示，微结构12内封装有量子点11，微结构12包括微结构入光面，微结构入光面设在出光面24上，且微结构12在垂直于微结构入光面的方向上中间厚两端薄。可以理解的，此处的“中间厚两端薄”指在垂直于微结构入光面的方向上，微结构的中部顶端距离微结构入光面的距离大于微结构中部两侧的顶端距离微结构入光面的距离，该结构能够起到光线聚集作用，增加导光板的亮度。
如图2所示，微结构12内封装的量子点11包括大颗粒量子点112和小颗粒量子点111。量子点11的发射光谱可以通过改变量子点11的尺寸大小来控制，改变量子点的尺寸可以使其发射光谱覆盖整个可见光区，因此不同颗粒大小的量子点的调配和分布直接影响到导光板的发光质量。本发明实施例将量子点11分别封装在多个微结构12中，由于微结构12尺寸小，其内封装的量子点11的种类及比例易调配和控制，且整个荧光层1由多个微结构12有规律地并排组成，极大地提高了导光板的出光色均匀度，使导光板能够具备更佳的显示质量。
进一步的，主体2第一侧面21为主体2的入光面，主体2的入光方向与主体2的出光方向垂直，在主体2的入光方向上，微结构12入光面的尺寸范围为：25至75微米。微结构12小至微米级进一步保证了导光板的出光色均匀度。
作为本发明的一种优选实施例，主体2第二侧面22上设有反射层，反射层用于将第一侧面22露出的光反射回主体2中，使光可以二次取出，提高了光的使用效率，光线经反射后多次激发荧光层1，增加了量子点11的发光效率，进一步增加了导光板的亮度。进一步的，第一反射层材质可以选用银或硫酸钡等具有光线反射功能的物质。
作为本发明的另一种优选实施例，微结构12在垂直于主体2入光方向的方向上延伸。进一步的，微结构12在主体2的入光方向上连续布置。
作为本发明的再一种优选实施例，微结构12为三棱柱形状，三棱柱的其中一个侧面为微结构12入光面。可以理解的，微结构12也可以是其他截面形状为中间厚两端薄的结构，如半圆柱体、梯形体等。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
在本发明实施例中，微结构12的封装材质可以采用硅胶，或其他透明的可以隔绝水氧以保护量子点11的材质。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
参阅图3，图3为本发明实施例提供的一种背光模组的结构示意图。本发明实施例提供一种背光模组，包括导光板、第一光源3和反射板5。其中，导光板包括主体2和荧光层1，主体2包括出光面24、底面23、第一侧面21和第二侧面22，第一侧面21与第二侧面22相对设置且连接于出光面24与底面23之间，1荧光层位于出光面24上。第一光源3靠近第一侧面21设置，第二侧面22上涂覆有反射层4，反射板5贴合底面23设置。荧光层1的设置同上述实施例相一致，此处不再详细说明。
可以理解的，在本发明实施例中，第一光源3发出光线从第一侧面21进入导光板主体2，从出光面24发射出后进入荧光层1，再通过量子点11将第一光源3所发出的光转化成不同波长的光发射出去，反射板5用于将底面23露出的光反射回主体2中，反射层4用于将第二侧面22露出的光反射回主体2中，使光可以二次取出，提高了光的使用效率，光线经反射后多次激发荧光层1，增加了量子点11的发光效率，进一步增加了背光模组的亮度。
进一步的，由于背光模组采用了前述实施例所述的荧光层1，荧光层1结构的设置提高了背光模组的亮度和出光色均匀度，背光模组具备更佳的显示质量。
作为本发明的另一种实施例，第一光源3为蓝色发光二极管。然而，可以理解的是，也可以采用其他光源作为第一光源。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。本实施例中，所采用的大颗粒量子点112可以将标准蓝色发光二极管发出的光转化成长波长光(如红光)，小颗粒量子点111可以将标准蓝色发光二极管发出的光转化短波长光(如绿光)，不同颗粒的量子点的混合形成一个新的光谱， 利用标准蓝色发光二极管光源可实现高品质三原色白光，使采用该背光模板的显示装置的显示性能达到新的水平。
作为本发明的再一种优选实施例，背光模组还包括设置在导光板背离反射板5一侧的光学膜片3，光学膜片3包括扩散膜62，还包括设置在荧光层1与扩散膜62之间的下棱镜膜63和设置在扩散膜62背离下棱镜膜63一侧的上棱镜膜61。扩散膜62可提高背光光线分布均匀的扩散效果，并可提高光线透过率从而产生高亮度。上棱镜膜61和下棱镜膜63具有提高背光模组光学性能的作用。
参阅图4-5，图4为本发明实施例提供的另一种背光模组的结构示意图，图5为图4中B处结构的放大视图。本发明实施例提供另一种背光模组，如图4所示，背光模组包括导光板、第一光源3、第二光源3’和反射板5。其中，导光板包括第一主体2、第二主体2’和荧光层1。第一主体2包括出光面一24、底面一23、第一侧面一21和第二侧面一22，第一侧面一21与第二侧面一22相对设置且连接于出光面一24与底面一23之间。第二主体2’包括出光面二24’、底面二23’、第一侧面二21’和第二侧面二22’，第一侧面二21’与第二侧面二22’相对设置且连接于出光面二24’与底面二23’之间。第二侧面一22与第二侧面二22’上分别涂覆有反射层一4和反射层二4’，反射层一4和反射层二4’相互贴合设置，出光面一24和出光面二24’共面，底面一23和底面二23’共面，荧光层1覆盖出光面一24和出光面二24’。第一光源3和第二光源3’相对设置，且分别位于导光板的两侧。反射板5设置在导光板底面，用于将底面一23和底面二23’露出的光反射回第一主体2和第二主体2’中。
可以理解的，在本发明实施例中，第一光源3发出光线经第一侧面一21、第一主体2和出光面一24后进入荧光层1，第二光源3’发出光线经第一侧面二21’、第二主体2’和出光面二24’后进入荧光层1，进入荧光层1的光激发量子点11发射出不同波长的光。反射层4用于将第二侧面一22露出的光反射回第一主体2中，反射层二4’用于将第二侧面二22’露出的光反射回第二主体2’中，使光可以二次取出，提高了光的使用效率，光线经反射后多次激发荧光层1，增加了量子点11的发光效率，进一步增加了背光模组的亮度。
进一步的，由于背光模组采用了前述实施例所述的荧光层1，荧光层1结 构的设置提高了背光模组的亮度和出光色均匀度，背光模组具备更佳的显示质量。
作为本发明一种优选实施例，如图5所示，反射层一4和反射层二4’之间还设置有粘着层，粘着层用于粘结第一主体2和第二主体2’。可以理解的，粘着层可以是一层的，也可是由涂覆在反射层一4上的粘着层一7和涂覆反射层二4’上的粘着层二7’公共组成。
作为本发明的另一种实施例，第一光源3和第二光源3’均为蓝色发光二极管。然而，可以理解的是，也可以采用其他光源作为第一光源。
作为本发明的再一种优选实施例，背光模组还包括设置在导光板背离反射板5一侧的光学膜片3，光学膜片3包括扩散膜62，还包括设置在荧光层1与扩散膜62之间的下棱镜膜63和设置在扩散膜62背离下棱镜膜63一侧的上棱镜膜61。扩散膜62可提高背光光线分布均匀的扩散效果，并可提高光线透过率从而产生高亮度。上棱镜膜61和下棱镜膜63具有提高背光模组光学性能的作用。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (15)

  1. 一种导光板，其中，包括主体和荧光层，所述主体包括出光面、底面、第一侧面和第二侧面，所述第一侧面与所述第二侧面相对设置且连接于所述出光面与所述底面之间，所述荧光层位于所述出光面上，所述荧光层包括多个并排布置的微结构，所述微结构内封装有量子点，所述微结构包括微结构入光面，所述微结构入光面设于与所述出光面上，所述微结构在垂直于所述微结构入光面的方向上中间厚两端薄。
  2. 如权利要求1所述的导光板，其中，所述第一侧面为所述主体的入光面，所述主体的入光方向与所述主体的出光方向垂直，在所述主体的入光方向上，所述微结构入光面的尺寸范围为：25至75微米。
  3. 如权利要求2所述的导光板，其中，所述第二侧面上设有反射层。
  4. 如权利要求3所述的导光板，其中，所述微结构在垂直于所述主体的入光方向的方向上延伸。
  5. 如权利要求4所述的导光板，其中，所述多个微结构在所述主体的入光方向上连续布置。
  6. 如权利要求5所述的导光板，其中，所述微结构呈三棱柱状结构。
  7. 一种背光模组，包括第一光源和导光板，其中，所述导光板包括主体和荧光层，所述主体包括出光面、底面、第一侧面和第二侧面，所述第一侧面与所述第二侧面相对设置且连接于所述出光面与所述底面之间，所述第一光源靠近所述第一侧面设置，所述荧光层位于出光面上，所述荧光层包括多个并排布置的微结构，所述微结构内封装有量子点，所述微结构包括微结构入光面，所述微结构入光面设于与所述出光面上，所述微结构在垂直于所述微结构入光面的方向上中间厚两端薄。
  8. 如权利要求7所述的背光模组，其中，所述第一侧面为所述主体的入光面，所述主体的入光方向与所述主体的出光方向垂直，在所述主体的入光方向上，所述微结构入光面的尺寸范围为：25至75微米。
  9. 如权利要求8所述的背光模组，其中，所述第二侧面上设有反射层。
  10. 如权利要求9述的背光模组，其中，所述微结构在垂直于所述主体 的入光方向的方向上延伸。
  11. 如权利要求10所述的背光模组，其中，所述多个微结构在所述主体的入光方向上连续布置。
  12. 如权利要求11所述的背光模组，其中，所述微结构呈三棱柱状结构。
  13. 如权利要求7所述的背光模组，其中，所述主体的数量为两个，每个所述主体的第二侧面均设有反射层，所述两个反射层相互贴合，所述两个主体的所述出光面共面，所述两个主体的底面亦共面，所述荧光层覆盖所述两个主体的出光面，所述背光模组还包括第二光源，所述第二光源和所述第一光源相对设置，且分别位于所述导光板的两侧。
  14. 如权利要求8所述的背光模组，其中，所述的两个反射层之间设置有粘着层。
  15. 如权利要求9所述的背光模组，其中，所述导光板的底面设置有反射板。
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106200118B (zh) 2016-07-06 2020-03-31 青岛海信电器股份有限公司 量子点光源组件、背光模组及液晶显示装置
TWI594054B (zh) * 2016-11-04 2017-08-01 友達光電股份有限公司 具量子點的背光模組及其製造方法
CN108303819B (zh) * 2017-01-12 2020-11-24 京东方科技集团股份有限公司 背光源及其制造方法、导光板及其制造方法及显示装置
CN207198363U (zh) * 2017-05-16 2018-04-06 深圳市华星光电技术有限公司 一种导光板、背光模组及显示设备
US10649129B2 (en) 2017-05-16 2020-05-12 Shenzhen China Star Optoelectronics Technology Co., Ltd Light guide plate, backlight module and display device
KR102422135B1 (ko) * 2017-07-07 2022-07-18 삼성디스플레이 주식회사 광학 부재, 이를 포함하는 표시 장치 및 광학 부재의 제조 방법
CN108398742B (zh) * 2018-03-13 2020-02-18 京东方科技集团股份有限公司 一种导光板、背光结构及其制作方法、显示装置
CN108732816B (zh) * 2018-05-22 2021-06-25 武汉华星光电技术有限公司 面光源背光模组及液晶显示面板
CN109358450B (zh) * 2018-11-28 2023-12-01 武汉华星光电技术有限公司 薄型背光模组及其制作方法
TWI677723B (zh) * 2018-12-18 2019-11-21 光耀科技股份有限公司 背光模組及顯示裝置
CN111650678A (zh) * 2020-06-29 2020-09-11 苏州龙桥光电有限公司 一种高亮度量子点膜

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101307865A (zh) * 2008-05-06 2008-11-19 孙润光 一种光源装置
US20110186883A1 (en) * 2010-02-01 2011-08-04 Lg Innotek Co., Ltd. Light emitting device, light emitting device package, and light system
CN103047553A (zh) * 2011-10-17 2013-04-17 中国科学院福建物质结构研究所 一种高光效大功率led面板灯
CN103175098A (zh) * 2012-05-17 2013-06-26 杨振安 Led导光板及其制造方法
CN103527993A (zh) * 2013-11-08 2014-01-22 青岛海信电器股份有限公司 背光模组及液晶电视
CN104566015A (zh) * 2014-12-01 2015-04-29 深圳市华星光电技术有限公司 一种量子点背光模组以及显示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879991A3 (en) * 1997-05-13 1999-04-21 Matsushita Electric Industrial Co., Ltd. Illuminating system
US8585273B2 (en) * 2007-07-31 2013-11-19 Rambus Delaware Llc Illumination assembly including wavelength converting material
US8459855B2 (en) * 2008-07-28 2013-06-11 Munisamy Anandan UV LED based color pixel backlight incorporating quantum dots for increasing color gamut of LCD
CN202511145U (zh) * 2012-04-12 2012-10-31 京东方科技集团股份有限公司 一种背光模组及液晶显示器
US9657920B2 (en) * 2012-11-09 2017-05-23 Saturn Licensing Llc Illumination device and display device
JP2014235891A (ja) * 2013-06-03 2014-12-15 Ｎｓマテリアルズ株式会社 導光体、バックライトユニット及び導光体の製造方法
JP2015046328A (ja) * 2013-08-28 2015-03-12 富士フイルム株式会社 導光板、これを含むバックライトユニットおよび液晶表示装置、ならびに光学シート
CN103912827A (zh) * 2014-04-04 2014-07-09 京东方科技集团股份有限公司 背光源、液晶显示面板和液晶显示装置
CN104166178A (zh) * 2014-06-27 2014-11-26 京东方科技集团股份有限公司 一种导光板、背光模组和显示装置
CN104330918A (zh) * 2014-11-28 2015-02-04 京东方科技集团股份有限公司 一种显示面板和显示装置
CN104536078B (zh) * 2014-12-19 2018-02-02 广东普加福光电科技有限公司 一种二向色滤光片增强荧光导光板及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101307865A (zh) * 2008-05-06 2008-11-19 孙润光 一种光源装置
US20110186883A1 (en) * 2010-02-01 2011-08-04 Lg Innotek Co., Ltd. Light emitting device, light emitting device package, and light system
CN103047553A (zh) * 2011-10-17 2013-04-17 中国科学院福建物质结构研究所 一种高光效大功率led面板灯
CN103175098A (zh) * 2012-05-17 2013-06-26 杨振安 Led导光板及其制造方法
CN103527993A (zh) * 2013-11-08 2014-01-22 青岛海信电器股份有限公司 背光模组及液晶电视
CN104566015A (zh) * 2014-12-01 2015-04-29 深圳市华星光电技术有限公司 一种量子点背光模组以及显示装置

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