WO2017197938A1 - 背光源及其组装方法、显示装置 - Google Patents

背光源及其组装方法、显示装置 Download PDF

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Publication number
WO2017197938A1
WO2017197938A1 PCT/CN2017/073858 CN2017073858W WO2017197938A1 WO 2017197938 A1 WO2017197938 A1 WO 2017197938A1 CN 2017073858 W CN2017073858 W CN 2017073858W WO 2017197938 A1 WO2017197938 A1 WO 2017197938A1
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WO
WIPO (PCT)
Prior art keywords
wavelength conversion
light
conversion device
wavelength
backlight
Prior art date
Application number
PCT/CN2017/073858
Other languages
English (en)
French (fr)
Inventor
吴忠宝
马若玉
Original Assignee
京东方科技集团股份有限公司
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 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/563,059 priority Critical patent/US10268073B2/en
Publication of WO2017197938A1 publication Critical patent/WO2017197938A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
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    • 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
    • G—PHYSICS
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    • 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
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • G—PHYSICS
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    • 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
    • G—PHYSICS
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    • 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
    • G—PHYSICS
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    • 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
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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

Definitions

  • Embodiments of the present invention relate to a backlight, an assembly method thereof, and a display device.
  • a liquid crystal display device is a display device widely used at present, and generally includes a display panel and a backlight for carrying the display panel and providing backlight for the display panel.
  • the wavelength of light emitted by the backlight is substantially determined when it is produced from a backlight manufacturer.
  • Embodiments of the present invention provide a backlight, an assembly method thereof, and a display device to increase a color gamut range of a display device.
  • At least one embodiment of the present invention provides a backlight including: a light source configured to emit light of a first wavelength; a wavelength conversion device disposed at a light exiting side of the light source, and configured to cause the first The wavelength of light is converted into light of a second wavelength after being transmitted through the wavelength conversion device, the second wavelength being different from the first wavelength; and a light guide plate disposed away from the wavelength conversion device One side of the light source and configured to receive light emerging from the wavelength conversion device and then re-emit the light.
  • the light guide plate has a light emitting surface and a reflecting surface opposite to each other and has a light incident surface that connects the light emitting surface and the reflecting surface; and the wavelength conversion device is disposed in the light source and the light guiding plate. Between the faces.
  • the wavelength conversion device includes: a wavelength conversion component configured to convert light of the first wavelength into light of the second wavelength; and a fixing component including a sidewall providing a receiving space, the wavelength The conversion assembly is disposed in the accommodation space of the fixed assembly.
  • the sidewall of the fixing component includes a first protrusion and a second protrusion that protrude toward the wavelength conversion component, and the wavelength conversion component is disposed at the first protrusion and the second protrusion Between the exits.
  • the sidewall of the fixing component further includes a third protrusion protruding toward the wavelength conversion component, the first protrusion, the second protrusion and the third protrusion are located
  • the wavelength conversion component a first side
  • the third protrusion is located between the first protrusion and the second protrusion.
  • the sidewall of the fixing component further includes a fourth protrusion and a fifth protrusion protruding toward the wavelength conversion component, and the fourth protrusion and the fifth protrusion are located at the wavelength A second side of the conversion assembly, the second side being opposite the first side.
  • a sidewall of the fixture assembly forms a reflective cavity between the light source and the wavelength conversion component, and a sidewall of the fixture assembly is provided with a reflective surface at the reflective cavity.
  • the reflecting surface is disposed obliquely with respect to the light emitting surface of the light source.
  • the diameter of the reflecting cavity gradually increases in a direction from the reflecting cavity to the accommodating space.
  • the end of the fixing assembly is formed with an opening at which the light source is disposed.
  • the side wall of the fixing assembly includes first and second housings opposed to each other to form the accommodation space.
  • the wavelength conversion component comprises a luminescent material.
  • the backlight further includes a heat dissipation plate including a baffle and a carrier plate connected to the baffle, and the baffle and the carrier plate form an accommodation space, the light source, the The wavelength conversion device and the light guide plate are disposed in an accommodation space of the heat dissipation plate.
  • a heat dissipation plate including a baffle and a carrier plate connected to the baffle, and the baffle and the carrier plate form an accommodation space, the light source, the The wavelength conversion device and the light guide plate are disposed in an accommodation space of the heat dissipation plate.
  • the carrier plate of the heat dissipation plate has a boss protruding toward the light guide plate, and the boss is located at a side of the wavelength conversion device remote from the light source to define a position of the wavelength conversion device.
  • the backlight further includes a plastic frame
  • the plastic frame includes a baffle and a positioning structure connected to the baffle, the baffle and the positioning structure form an accommodation space, the light source and the A wavelength conversion device is disposed in the accommodation space.
  • the positioning structure of the plastic frame is provided with a protrusion provided on a side of the wavelength conversion device remote from the light source to define a position of the wavelength conversion device.
  • At least one embodiment of the present invention also provides a display device comprising the backlight of any of the above.
  • At least one embodiment of the present invention also provides a method of assembling a backlight, comprising: providing a wavelength conversion device on a light emitting side of the light source, the wavelength conversion device configured to convert light of the first wavelength through the wavelength conversion The device is then converted to light of a second wavelength different from the first wavelength; and a light guide plate is disposed on a side of the wavelength conversion device remote from the light source such that the light guide plate is located at Within the illumination range of the light emitted by the wavelength conversion device.
  • the wavelength conversion device includes a fixed component and a wavelength conversion component
  • the fixed component package a first housing and a second housing, the first housing and the second housing being oppositely disposed to form an accommodation space
  • the method of assembling the wavelength conversion device comprising: a fixing component to the wavelength conversion device Including an end portion of the first housing and the second housing applying opposite forces to form a gap between the first housing and the second housing; and the wavelength conversion assembly from the A void is placed in the accommodation space.
  • the assembly method further includes: placing a plastic frame on the light source, the wavelength conversion device, and the light guide plate to fix a relative position between the light source, the wavelength conversion device, and the light guide plate .
  • FIG. 1 is a partial cross-sectional view of a backlight according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a wavelength conversion device in a backlight according to an embodiment of the present invention
  • 3a-3b are schematic diagrams showing a fixing component of a wavelength conversion device in a backlight according to an embodiment of the present invention
  • Figure 3c is a partial enlarged view of the area A in Figure 3b;
  • FIG. 4 is a partial cross-sectional view of a display device according to an embodiment of the present invention.
  • 5a to 5c are schematic diagrams showing steps of a method for assembling a backlight according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of assembly of a wavelength conversion device in a method for assembling a backlight according to an embodiment of the present invention
  • FIG. 7 is another schematic diagram of assembly of a wavelength conversion device in a method for assembling a backlight according to an embodiment of the present invention.
  • Embodiments of the present invention provide a backlight, an assembly method thereof, and a display device, wherein a wavelength conversion device is disposed between a light source included in a backlight and a light guide plate, and the wavelength conversion device can convert a wavelength of light emitted by the light source, thereby Increase the color gamut range of the display device.
  • a backlight including a light source 10, a wavelength conversion device 20, and a light guide plate 30.
  • the light source 10 is configured to emit light of a first wavelength (as indicated by an arrow on the left side in FIG. 1); the wavelength conversion device 20 is disposed on a light exiting side of the light source 10 (ie, a side of the light exit surface 11a of the light source 10 that is adjacent to the light guide plate 30). And configured to cause the light of the first wavelength to be converted into light of the second wavelength after being transmitted through the wavelength conversion device 20 (as indicated by the arrow on the right side in FIG.
  • the light plate 30 is disposed on a side of the wavelength conversion device 20 remote from the light source 10, and the light guide plate 30 is configured to receive the light emitted from the wavelength conversion device 20 and then re-emit the light.
  • the light of the first wavelength and the light of the second wavelength may be light of a single wavelength, or may be light of a certain wavelength range.
  • both the light of the first wavelength and the light of the second wavelength are light having a certain wavelength range
  • part or all of the wavelength range of the light of the first wavelength may be converted by the wavelength conversion device 20 to obtain light of the second wavelength.
  • the above-mentioned self-wavelength conversion device 20 The light may be the light of the second wavelength described above, or may be the light formed after the light of the second wavelength is processed by other optical elements included in the wavelength conversion device.
  • the arrows in FIG. 1 are only used to exemplarily represent the first and second wavelengths of light.
  • the backlight provided by at least one embodiment of the present invention may be a side-entry backlight, that is, the light guide plate 30 has the light-emitting surface 30a and the reflective surface 30b opposite to each other and has a light-emitting surface 30a and a reflective surface 30b.
  • the wavelength conversion device 20 may be disposed between the light source 10 and the light incident surface 30c of the light guide plate 30.
  • the light emitted from the wavelength conversion device 20 can be incident on the light guide plate 30 from the light incident surface 30c of the light guide plate 30, and then emitted from the light exit surface 30a of the light guide plate 30 and enter the display panel included in the display device.
  • the structure of the backlight can be simplified and the assembly of the wavelength conversion device 20 can be facilitated.
  • the backlight provided by at least one embodiment of the present invention may further include a heat dissipation plate 40, which may include a baffle 41 and a carrier plate 42 connected to the baffle 41, and the baffle 41 and the carrier plate 42 are formed to receive The space 43, the light source 10, the wavelength conversion device 20, and the light guide plate 30 may be disposed in the accommodation space 43 of the heat dissipation plate 40.
  • a heat dissipation plate 40 which may include a baffle 41 and a carrier plate 42 connected to the baffle 41, and the baffle 41 and the carrier plate 42 are formed to receive The space 43, the light source 10, the wavelength conversion device 20, and the light guide plate 30 may be disposed in the accommodation space 43 of the heat dissipation plate 40.
  • the carrier plate 42 of the heat sink 40 may have a boss 44 that protrudes from the light guide plate 30, and the boss 44 is located on a side of the wavelength conversion device 20 remote from the light source 10 to define the position of the wavelength conversion device 20.
  • the boss 44 has a side surface 44a facing the wavelength conversion device 20, so that the boss 44 can function to prevent the wavelength conversion component 20 from moving toward the light guide plate 30, thereby improving the mechanical performance of the backlight.
  • the backlight provided by at least one embodiment of the present invention may further include a plastic frame 50.
  • the plastic frame 50 may include a baffle 51 and a positioning structure 52 connected to the baffle 51.
  • the baffle 51 and the positioning structure 52 are formed to receive the same.
  • the space 53, the light source 10, and the wavelength conversion device 20 are disposed in the accommodating space 53.
  • the positioning structure 52 of the plastic frame 50 may be provided with a protrusion 54 disposed at a side of the wavelength conversion device 20 remote from the light source 10 to define the position of the wavelength conversion device 20.
  • the projection 54 has a side surface 54a facing the wavelength conversion device 20, so that the projection 54 can prevent the wavelength conversion component 20 from moving toward the light guide 30, thereby improving the mechanical performance of the backlight.
  • the lower surface 52a of the positioning structure 52 of the plastic frame 50 facing the wavelength conversion device 20 may also define the position of the wavelength conversion device 20 to prevent the wavelength conversion device 20 from moving away from the carrier plate 42 of the heat dissipation plate 40, thereby further Improve the mechanical performance of the backlight.
  • the positioning structure 52 of the plastic frame 50 can also form other projections (not shown in FIG. 1) to define the position of the light source 10 and/or the shutter 41 of the heat dissipation plate 40.
  • the light source 10 may include a light emitting device 11 and a circuit board 12 connected to the light emitting device 11.
  • the light emitting device may be an LED (Light-Emitting Diode) light emitting device or an OLED (Organic Light-Emitting Diode) light emitting device or the like.
  • circuit board 12 can be a printed circuit board, such as a flexible printed circuit board or the like.
  • light source 10 and/or wavelength conversion device 20 can be coupled to heat sink 40 to improve the mechanical properties of the backlight.
  • the circuit board 12 of the light source 10 may be connected to the shutter 41 of the heat dissipation plate 40 by a connecting member 45 such as an adhesive (for example, glue); for example, the wavelength conversion device 20 may pass, for example, an adhesive A connector 46 such as a glue is connected to the carrier plate 42 of the heat sink 40.
  • the backlight may further include an optical film 62 disposed on the light guide plate 30 and a reflective sheet 63 and a back plate 64 disposed between the light guide plate 30 and the heat dissipation plate 40. These structures are not described here.
  • the wavelength conversion device 20 will be described in detail below with reference to Figs. 1 to 3c.
  • the wavelength conversion device 20 can include a wavelength conversion component 22 and a stationary component 21.
  • the wavelength conversion component 22 is configured to convert light of a first wavelength to light of a second wavelength.
  • the wavelength conversion component 22 can include a luminescent material, such as a quantum dot or fluorescer, etc.; for example, the wavelength conversion component 22 can also include a transparent container for holding the luminescent material, such as a glass tube or the like.
  • the wavelength conversion device 20 includes a fixed assembly 21 for fixing the wavelength conversion component 22.
  • the fixing assembly 21 includes a side wall 210 that provides a receiving space 213, and the wavelength conversion assembly 22 is disposed in the receiving space 213 of the fixing assembly 21.
  • the sidewall 210 of the fixing component 21 may include a first protrusion 210a and a second protrusion 210b protruding toward the wavelength conversion component 22, and the wavelength conversion component 22 is disposed on the first protrusion 210a.
  • the first protrusions 210a and the second protrusions 210b can define the wavelength conversion component 22 within the accommodation space 213.
  • the sidewall 210 of the fixing component 21 may further include a third protrusion 210c protruding toward the wavelength conversion component 22, and the first protrusion 210a, the second protrusion 210b, and the third protrusion 210c are all located in the wavelength conversion.
  • the first side of the assembly 22 (shown on the upper side of the wavelength conversion assembly 22 in FIG. 2), and the third projection 210c is located between the first projection 210a and the second projection 210b, thereby securing the assembly 21
  • the sidewall 210 may form an M-shaped structure 215 through the first, second, and third projections, and the M-shaped structure 215 may fix the wavelength conversion component 22 from the lateral and longitudinal directions, and the M-shaped structure has high mechanical strength.
  • the sidewall 210 of the fixture assembly 21 can also include a fourth projection that is convex toward the wavelength conversion component 22.
  • the upper portion 210d and the fifth protruding portion 210e, the fourth protruding portion 210d and the fifth protruding portion 210e are located on the second side of the wavelength conversion component 22 (as shown on the lower side of the wavelength conversion component 22 in FIG. 2), The two sides are opposite to the first side.
  • the wavelength conversion component 22 can be further fixed by providing the fourth and fifth projections.
  • the sidewall 210 of the fixture assembly 21 can also form a reflective cavity 214 between the light source (not shown in FIG. 2) and the wavelength conversion component 22, the sidewall 210 of the fixture assembly 21 being disposed at the reflective cavity 214 Reflecting surface 214a.
  • the reflective cavity 214 the light emitted by the light source can be reflected by the reflective surface 214a and then enter the wavelength conversion component 22, so that the light utilization efficiency and the light mixing effect can be improved, so that the wavelength conversion device 20 has better optical coupling. Sex.
  • the reflecting surface 214a may be disposed obliquely with respect to the light emitting surface of the light source 10 (as shown by 11a in FIG. 1). Since the light emitted by the light source has a plurality of different radiation directions, the oblique arrangement can be more advantageous for the reflective surface 214a to reflect the light emitted by the light source. It should be noted that the tilt angle of the reflective surface 214a may be set according to the light emitting device of the light source used, and details are not described herein.
  • the aperture of the reflective cavity 214 is gradually increased.
  • the reflecting surface 214a it can be more advantageous for the reflecting surface 214a to reflect the light emitted by the light source.
  • the fixing assembly 21 included in the wavelength conversion device 20 will be further described in detail below with reference to Figs. 3a to 3c.
  • an end portion 219 (not shown in FIG. 3b) of the fixing assembly 21 away from the receiving space 213 (not shown in FIG. 3b) may be formed with an opening 217, and the opening 217 is provided with The above light source (not shown in Figures 3a and 3b). This allows the light source and the wavelength conversion device to be assembled more compactly to improve the optical coupling of the wavelength conversion device.
  • the end portion 219 of the fixing assembly 21 may be provided with a first projecting portion 219a and a second projecting portion 219b projecting away from the opening 217, and the second projecting portion 219b It is located on the same straight line as the extending direction of the first projecting portion 219a.
  • the first and second extensions (not shown in FIG. 1) allow the wavelength conversion device 20 to be stably disposed on the circuit board 12 of the light source 10, thereby contributing to improving the mechanical performance of the backlight.
  • the side wall 210 of the fixing assembly 21 may include the first housing 211 and the second housing 212 opposed to each other to form the accommodation space 213.
  • the structure of the fixing assembly 21 is simple and it is convenient to arrange the wavelength conversion assembly in the housing space 213 of the fixing assembly 21.
  • the first housing 211 and the second housing 212 may be adjacent to the accommodation space 213. The end exerts an opposing force to increase the distance between the two, after which the wavelength conversion component is placed in the receiving space 213 therebetween, and finally the end is passed through the connecting portion 218 (as shown in Figure 3b). The connection is made such that the wavelength conversion component is fixed between the first housing 211 and the second housing 212.
  • a positioning hole 218a may be disposed in the connecting portion 218, and the connecting portion 218 and the housing included in the fixing assembly 21 may be provided by providing a bolt or a positioning pin or the like in the positioning hole 218a (in FIG. 3c
  • the second housing 212 is fixed together as an example.
  • the manner of fixing the connecting portion 218 to the housing includes, but is not limited to, the manner shown in FIG. 3c.
  • At least one embodiment of the present invention also provides a display device comprising the backlight provided by any of the above embodiments.
  • At least one embodiment of the present invention provides a display device including a display panel 61 disposed on a backlight (not shown in FIG. 4).
  • the backlight is a display panel 61.
  • the display panel 61 may be a liquid crystal panel or a display panel similar to inactive light.
  • the display device provided by at least one embodiment of the present invention may further include a front frame 65 to fix the backlight together with the display panel 61.
  • the display device may also include other common structures, which are not described herein.
  • the display device provided by the embodiment of the present invention may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • At least one embodiment of the present invention further provides a method for assembling a backlight.
  • the method of the present invention is as follows.
  • the method provided by the embodiment of the present invention includes: as shown in FIG. 5a, on the light emitting side of the light source 10 Providing a wavelength conversion device 20 configured to cause light of a first wavelength to be converted into light of a second wavelength after being transmitted through the wavelength conversion device 20, the second wavelength being different from the first wavelength; and, as shown in FIG. 5b
  • the light guide plate 30 is disposed on the side of the wavelength conversion device 20 remote from the light source 10 such that the light guide plate 30 is located within the illumination range of the light emitted from the wavelength conversion device 20.
  • the light emitted from the wavelength conversion device 20 may be light of the second wavelength, or of course, the light of the second wavelength may be processed by other optical elements included in the wavelength conversion device.
  • the light source 10 may be connected to the heat dissipation plate 40 (as shown in FIG. 5a) before the wavelength conversion device 20 is disposed on the light exit side of the light source 10.
  • the connection manner between the light source 10 and the heat dissipation plate 40 reference may be made to the above related description, and the repeated description will not be repeated.
  • the assembly method provided by at least one embodiment of the present invention may also include After the light guide plate 30 is disposed, the plastic frame 50 is placed on the light source 10, the wavelength conversion device 20, and the light guide plate 30 to fix the relative position between the light source 10, the wavelength conversion device 20, and the light guide plate 30.
  • the plastic frame 50 includes a baffle 51 and a positioning structure 52.
  • the baffle 51 is disposed on a side of the light source 10 remote from the wavelength conversion device 20.
  • the positioning structure 52 has a protrusion 54 to define a wavelength conversion device. 20 location.
  • the lower surface 52a of the positioning structure 52 can also define the location of the wavelength conversion device 20.
  • the positioning structure 52 of the plastic frame 50 can also form other protrusions (not shown in FIG. 5c) to define the position of the light source 10 and/or the heat sink 40.
  • the wavelength conversion device 20 may include a fixing assembly 21 and a wavelength conversion assembly 22, as shown in FIG. 6a, the fixing assembly 21 includes a first housing 211 and a second housing 212, and the first housing 211 The second housing 212 is disposed opposite to form the receiving space 213.
  • the assembling method of the wavelength conversion device 20 may include: the first housing 211 and the second portion included in the fixing assembly 21 as shown in FIG.
  • the wavelength conversion device 20 can also adopt other assembly methods.
  • the wavelength conversion component 22 can be pushed into the accommodating space 213 of the fixing component 21 along the extending direction of the fixing component 21.
  • the embodiment of the present invention provides a wavelength conversion device between the light source of the backlight and the light guide plate, which can increase the color gamut range of the display device.
  • the side-entry structure is adopted, so that the embodiment of the present invention has The utility model has the advantages of simple structure and convenient assembly; on the other hand, the mechanical performance of the backlight in the embodiment of the invention can be improved by the design of the fixing component of the wavelength conversion device, the heat dissipation plate and the plastic frame; and, in some embodiments, By forming the fixing member of the wavelength conversion device into a reflection cavity, the optical coupling property of the wavelength conversion device can be improved.

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Abstract

一种背光源及其组装方法、显示装置，背光源包括：光源（10），其配置为发射第一波长的光；波长转换装置（20），其设置在光源（10）的出光侧，且配置为使第一波长的光在透过波长转换装置（20）之后被转换为第二波长的光，第二波长不同于第一波长；以及导光板（30），其设置于波长转换装置（20）的远离光源（10）的一侧，且配置为接收自波长转换装置（20）出射的光然后将光再出射。可以增大显示装置的色域范围。

Description

背光源及其组装方法、显示装置 技术领域
本发明的实施例涉及一种背光源及其组装方法、显示装置。
背景技术
液晶显示装置是目前广泛应用的一种显示装置，其通常包括显示面板和用于承载该显示面板且为该显示面板提供背光的背光源。在目前的液晶显示装置中，背光源发出的光的波长基本上在从背光源厂商出产时就已经确定。然而，随着人们对液晶显示装置的显示效果的要求的提高，提升液晶显示装置的色域成为技术发展的趋势。
发明内容
本发明实施例提供一种背光源及其组装方法、显示装置，以增大显示装置的色域范围。
本发明的至少一个实施例提供一种背光源，其包括：光源，其配置为发射第一波长的光；波长转换装置，其设置在所述光源的出光侧，且配置为使所述第一波长的光在透过所述波长转换装置之后被转换为第二波长的光，所述第二波长不同于所述第一波长；以及导光板，其设置于所述波长转换装置的远离所述光源的一侧，且配置为接收自所述波长转换装置出射的光然后将所述光再出射。
例如，所述导光板具有彼此相对的出光面和反射面并且具有连接所述出光面和所述反射面的入光面；所述波长转换装置设置于所述光源和所述导光板的入光面之间。
例如，所述波长转换装置包括：波长转换组件，其配置为使所述第一波长的光转换为所述第二波长的光；以及固定组件，其包括提供容纳空间的侧壁，所述波长转换组件设置在所述固定组件的容纳空间中。
例如，所述固定组件的侧壁包括凸向所述波长转换组件的第一凸出部和第二凸出部，所述波长转换组件设置于所述第一凸出部和所述第二凸出部之间。
例如，所述固定组件的侧壁还包括凸向所述波长转换组件的第三凸出部，所述第一凸出部、所述第二凸出部和所述第三凸出部都位于所述波长转换组件 的第一侧，并且所述第三凸出部位于所述第一凸出部和所述第二凸出部之间。
例如，所述固定组件的侧壁还包括凸向所述波长转换组件的第四凸出部和第五凸出部，所述第四凸出部和所述第五凸出部位于所述波长转换组件的第二侧，所述第二侧与所述第一侧相对。
例如，所述固定组件的侧壁形成位于所述光源和所述波长转换组件之间的反射腔体，所述固定组件的侧壁在所述反射腔体处设置有反射面。
例如，所述反射面相对于所述光源的出光面倾斜设置。
例如，在从所述反射腔体到所述容纳空间的方向上，所述反射腔体的口径逐渐增大。
例如，所述固定组件的端部形成有开口，所述开口处设置有所述光源。
例如，所述固定组件的侧壁包括彼此相对的第一壳体和第二壳体以形成所述容纳空间。
例如，所述波长转换组件包括发光材料。
例如，所述背光源还包括散热板，所述散热板包括挡板以及与所述挡板连接的承载板，所述挡板与所述承载板之间形成容纳空间，所述光源、所述波长转换装置和所述导光板设置于所述散热板的容纳空间中。
例如，所述散热板的承载板具有凸向所述导光板的凸台，所述凸台位于所述波长转换装置的远离所述光源的一侧以限定所述波长转换装置的位置。
例如，所述背光源还包括胶框，所述胶框包括挡板以及与所述挡板连接的定位结构，所述挡板与所述定位结构之间形成容纳空间，所述光源和所述波长转换装置设置于所述容纳空间中。
例如，所述胶框的定位结构设置有凸出部，所述凸出部设置于所述波长转换装置的远离所述光源的一侧以限定所述波长转换装置的位置。
本发明的至少一个实施例还提供一种显示装置，其包括以上任一项所述的背光源。
本发明的至少一个实施例还提供一种背光源的组装方法，其包括：在光源的出光侧设置波长转换装置，所述波长转换装置配置为使第一波长的光在透过所述波长转换装置之后被转换为第二波长的光，所述第二波长不同于所述第一波长；以及在所述波长转换装置的远离所述光源的一侧设置导光板，使所述导光板位于自波长转换装置出射的光的照射范围内。
例如，所述波长转换装置包括固定组件和波长转换组件，所述固定组件包 括第一壳体和第二壳体，所述第一壳体和所述第二壳体相对设置以形成容纳空间，所述波长转换装置的组装方法包括：对所述波长转换装置的固定组件包括的第一壳体和第二壳体的端部施加相反的作用力，以使所述第一壳体和所述第二壳体之间形成空隙；以及将所述波长转换组件从所述空隙放入所述容纳空间中。
例如，所述组装方法还包括：在所述光源、所述波长转换装置和所述导光板上放置胶框，以固定所述光源、所述波长转换装置和所述导光板之间的相对位置。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本发明实施例提供的背光源的局部剖视示意图；
图2为本发明实施例提供的背光源中的波长转换装置的示意图；
图3a至图3b为本发明实施例提供的背光源中波长转换装置的固定组件的示意图；
图3c为图3b中区域A的局部放大示意图；
图4为本发明实施例提供的显示装置的局部剖视示意图；
图5a至图5c为本发明实施例提供的背光源的组装方法的各步骤示意图；
图6a至图6b为本发明实施例提供的背光源的组装方法中波长转换装置的组装示意图；以及
图7为本发明实施例提供的背光源的组装方法中波长转换装置的另一种组装示意图。
附图标记
10-光源；11-发光器件；12-电路板；20-波长转换装置；21-固定组件；219a-第一伸出部；219b-第二伸出部；211-第一壳体；212-第二壳体；218-连接部；218a-定位孔；22-波长转换组件；210a-第一凸出部；210b-第二凸出部；213-容纳空间；210c-第三凸出部；210d-第四凸出部；210e-第五凸出部；210-侧壁；214-反射腔体；215-M形结构；30-导光板；40-散热板；41,51-挡板；42-承载板；43，53-容纳空间；44-凸台；45，46-连接件；50-框胶；52-定位结构；54- 凸出部；61-显示面板；62-光学膜片；63-反射片；64-背板；65-前框。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
本发明实施例提供一种背光源及其组装方法、显示装置，通过在背光源包括的光源和导光板之间设置波长转换装置，并且该波长转换装置可以转换光源发出的光的波长，从而可以增大显示装置的色域范围。
如图1所示，本发明的至少一个实施例提供一种背光源，其包括光源10、波长转换装置20和导光板30。光源10配置为发射第一波长的光(如图1中左侧的箭头所示)；波长转换装置20设置在光源10的出光侧(即光源10的出光面11a的靠近导光板30的一侧)，且配置为使第一波长的光在透过波长转换装置20之后被转换为第二波长的光(如图1中右侧的箭头所示)，第二波长不同于第一波长；导光板30设置于波长转换装置20的远离光源10的一侧，且导光板30配置为接收自波长转换装置20出射的光然后将光再出射。
需要说明的是，上述第一波长的光和第二波长的光可以都是单个波长的光，也可以都是具有一定波长范围的光。在第一波长的光和第二波长的光都为具有一定波长范围的光的情况下，第一波长的光的部分或全部波长范围可以被波长转换装置20转换，以得到第二波长的光。上述自波长转换装置20出射的 光可以为上述第二波长的光，也可以为第二波长的光经过波长转换装置包括的其它光学元件处理之后形成的光。此外，图1中的箭头仅用于示例性地表示第一、二波长的光。
例如，本发明的至少一个实施例提供的背光源可以为侧入式背光源，也就是说，导光板30具有彼此相对的出光面30a和反射面30b并且具有连接出光面30a和反射面30b的入光面30c，波长转换装置20可以设置于光源10和导光板30的入光面30c之间。在这种情况下，自波长转换装置20出射的光可以从导光板30的入光面30c射入导光板30中，之后从导光板30的出光面30a射出并进入显示装置包括的显示面板中。采用侧入式背光源，可以简化该背光源的结构，并且方便波长转换装置20的组装。
例如，本发明的至少一个实施例提供的背光源还可以包括散热板40，散热板40可以包括挡板41以及与挡板41连接的承载板42，挡板41与承载板42之间形成容纳空间43，光源10、波长转换装置20和导光板30可以设置于散热板40的容纳空间43中。
例如，散热板40的承载板42可以具有凸向导光板30的凸台44，凸台44位于波长转换装置20的远离光源10的一侧以限定波长转换装置20的位置。如图1所示，凸台44具有面向波长转换装置20的侧面44a，从而凸台44可以起到防止波长转换组件20向导光板30移动的作用，进而提高背光源的机械性能。
例如，本发明的至少一个实施例提供的背光源还可以包括胶框50，胶框50可以包括挡板51以及与挡板51连接的定位结构52，挡板51与定位结构52之间形成容纳空间53，光源10和波长转换装置20设置于容纳空间53中。
例如，胶框50的定位结构52可以设置有凸出部54，该凸出部54设置于波长转换装置20的远离光源10的一侧以限定波长转换装置20的位置。如图1所示，凸出部54具有面向波长转换装置20的侧面54a，从而凸出部54可以起到防止波长转换组件20向导光板30移动的作用，进而提高背光源的机械性能。
例如，胶框50的定位结构52的面向波长转换装置20的下表面52a也可以限定波长转换装置20的位置，以防止波长转换装置20向远离散热板40的承载板42的方向移动，从而进一步提高背光源的机械性能。
当然，如图1所示，胶框50的定位结构52还可以形成其它凸出部(图1中未标出)，以限定光源10和/或散热板40的挡板41的位置。
例如，光源10可以包括发光器件11和与该发光器件11连接的电路板12。例如，该发光器件可以为LED(Light-Emitting Diode)发光器件或OLED(Organic Light-Emitting Diode)发光器件等。例如，电路板12可以为印刷电路板，例如柔性印刷电路板等。
例如，光源10和/或波长转换装置20可以与散热板40连接，以提高背光源的机械性能。例如，如图1所示，光源10的电路板12可以通过例如粘合剂(例如胶)等连接件45与散热板40的挡板41连接；例如，波长转换装置20可以通过例如粘合剂(例如胶)等连接件46与散热板40的承载板42连接。
当然，背光源中还可以包括设置在导光板30上的光学膜片62以及设置在导光板30和散热板40之间的反射片63和背板64等结构。这里对这些结构不作赘述。
下面结合图1至图3c对波长转换装置20进行详细说明。
例如，如图1所示，波长转换装置20可以包括波长转换组件22和固定组件21。波长转换组件22配置为使第一波长的光转换为第二波长的光。例如，波长转换组件22可以包括发光材料，该发光材料例如为量子点或荧光剂等；例如，波长转换组件22还可以包括用于容纳该发光材料的透明容器，例如玻璃管等。波长转换装置20包括的固定组件21用于固定波长转换组件22。如图2所示，固定组件21包括提供容纳空间213的侧壁210，波长转换组件22设置在固定组件21的容纳空间213中。
例如，如图2所示，固定组件21的侧壁210可以包括凸向波长转换组件22的第一凸出部210a和第二凸出部210b，波长转换组件22设置于第一凸出部210a和第二凸出部210b之间，从而第一凸出部210a和第二凸出部210b可以将波长转换组件22限定在容纳空间213内。
例如，固定组件21的侧壁210还可以包括凸向波长转换组件22的第三凸出部210c，第一凸出部210a、第二凸出部210b和第三凸出部210c都位于波长转换组件22的第一侧(如图2中波长转换组件22的上侧所示)，并且第三凸出部210c位于第一凸出部210a和第二凸出部210b之间，从而固定组件21的侧壁210可以通过第一、二、三凸出部形成M形结构215，该M形结构215可以从横向和纵向对波长转换组件22进行固定，并且该M形结构的机械强度高。
例如，固定组件21的侧壁210还可以包括凸向波长转换组件22的第四凸 出部210d和第五凸出部210e，第四凸出部210d和第五凸出部210e位于波长转换组件22的第二侧(如图2中波长转换组件22的下侧所示)，第二侧与第一侧相对。通过设置第四、五凸出部，可以进一步固定波长转换组件22。
例如，固定组件21的侧壁210还可以形成位于光源(图2中未示出)和波长转换组件22之间的反射腔体214，固定组件21的侧壁210在反射腔体214处设置有反射面214a。通过设置反射腔体214，使得光源发出的光可以被反射面214a反射之后再进入波长转换组件22中，从而可以提高光的利用率和混光效果，使得波长转换装置20具有较好的光耦合性。
例如，反射面214a可以相对于光源10的出光面(如图1中的11a所示)倾斜设置。由于光源发出的光具有多个不同的辐射方向，因而，采用倾斜设置的方式可以更有利于反射面214a反射光源发出的光。需要说明的是，反射面214a的倾斜角度可以根据所采用的光源的发光器件进行设置，这里不做赘述。
例如，在从反射腔体214到容纳空间213的方向上(也可以说是从反射腔体214到波长转换组件22的方向上)，反射腔体214的口径逐渐增大。这样，对于采用LED或OLED等发光器件的光源，可以更有利于使反射面214a反射光源发出的光。
下面结合图3a至图3c，对波长转换装置20包括的固定组件21进行进一步详细说明。
例如，如图3a和图3b所示，固定组件21的远离容纳空间213(图3b中未示出)的端部219(图3b中未标出)可以形成有开口217，开口217处设置有上述光源(图3a和图3b中未示出)。这样可以使光源和波长转换装置更紧凑地组装在一起，以提高波长转换装置的光耦合性。
例如，如图3a和图3b所示，固定组件21的端部219可以设置有向远离开口217的方向伸出的第一伸出部219a和第二伸出部219b，第二伸出部219b和第一伸出部219a的延伸方向位于同一条直线上。如图1所示，第一、二伸出部(图1中未标出)可以使波长转换装置20稳定地设置在光源10的电路板12上，从而有利于提高背光源的机械性能。
例如，固定组件21的侧壁210可以包括彼此相对的第一壳体211和第二壳体212以形成容纳空间213。通过采用第一壳体211和第二壳体212，使得固定组件21的结构简单并且便于将波长转换组件设置在固定组件21的容纳空间213中。例如，可以对第一壳体211和第二壳体212的靠近容纳空间213的 端部施加相反的作用力以增大二者之间的距离，之后将波长转换组件放入二者之间的容纳空间213中，最后将上述端部通过连接部218(如图3b所示)连接起来，从而波长转换组件被固定在第一壳体211和第二壳体212之间。
例如，如图3c所示，连接部218中可以设置有定位孔218a，通过在定位孔218a中设置螺栓或定位销等结构可以使连接部218与固定组件21包括的壳体(图3c中以第二壳体212为例)固定在一起。当然，连接部218与壳体的固定方式包括但不限于图3c所示方式。
本发明的至少一个实施例还提供一种显示装置，其包括以上任一实施例提供的背光源。
例如，如图4所示，本发明的至少一个实施例提供的显示装置包括设置在背光源(图4中未标出)上的显示面板61，在显示过程中，该背光源为显示面板61提供背光。例如，显示面板61可以为液晶面板或类似非主动发光的显示面板。
例如，本发明的至少一个实施例提供的显示装置还可以包括前框65，以将背光源与显示面板61固定在一起。当然，显示装置还可以包括其它常见的结构，这里不做赘述。
例如，本发明实施例提供的显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本发明的至少一个实施例还提供一种背光源的组装方法，以如图1所示的背光源为例，本发明实施例提供的方法包括：如图5a所示，在光源10的出光侧设置波长转换装置20，该波长转换装置20配置为使第一波长的光在透过波长转换装置20之后被转换为第二波长的光，第二波长不同于第一波长；以及，如图5b所示，在波长转换装置20的远离光源10的一侧设置导光板30，使导光板30位于自波长转换装置20出射的光的照射范围内。
需要说明的是，上述自波长转换装置20出射的光可以为上述第二波长的光，当然，也可以为第二波长的光经过波长转换装置包括的其它光学元件处理之后形成的光。
例如，本发明的至少一个实施例提供的组装方法中，在光源10的出光侧设置波长转换装置20之前，还可以将光源10与散热板40连接(如图5a所示)。光源10与散热板40的连接方式可以参照以上相关描述，重复之处不再赘述。
例如，如图5c所示，本发明的至少一个实施例提供的组装方法还可以包 括：在设置完导光板30之后，在光源10、波长转换装置20和导光板30上放置胶框50，以固定光源10、波长转换装置20和导光板30之间的相对位置。例如，如图5c所示，胶框50包括挡板51和定位结构52，挡板51设置在光源10的远离波长转换装置20的一侧，定位结构52具有凸出部54以限定波长转换装置20的位置。例如，定位结构52的下表面52a也可以限定波长转换装置20的位置。当然，胶框50的定位结构52还可以形成其它凸出部(图5c中未标出)，以限定光源10和/或散热板40的位置。
例如，如图1所示，波长转换装置20可以包括固定组件21和波长转换组件22，如图6a所示，固定组件21包括第一壳体211和第二壳体212，第一壳体211和第二壳体212相对设置以形成容纳空间213，在这种情况下，波长转换装置20的组装方法可以包括：如图6a所示，对固定组件21包括的第一壳体211和第二壳体212的端部211a、212a施加相反的作用力(如图6a中的箭头所示)，以使第一壳体211和第二壳体212之间形成空隙210c；以及，如图6b所示，将波长转换组件22从该空隙(图6b中未示出)放入容纳空间213中。
当然，波长转换装置20也可以采用其它组装方法，例如，如图7所示，可以将波长转换组件22沿固定组件21的延伸方向推入固定组件21的容纳空间213中。
上述背光源及其组装方法和显示装置的实施例可以互相参照。此外，在不冲突的情况下，本发明的实施例及实施例中的特征可以相互组合。
综上所述，本发明实施例在背光源的光源和导光板之间设置波长转换装置，可以增大显示装置的色域范围；另一方面，采用侧入式结构，使得本发明实施例具有结构简单、组装方便的优点；再一方面，通过波长转换装置的固定组件、散热板和胶框等结构的设计，可以提高本发明实施例中背光源的机械性能；此外，在一些实施例中，通过使波长转换装置的固定组件形成反射腔体，可以提高波长转换装置的光耦合性。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2016年5月17日递交的中国专利申请第201610326436.9号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (20)

  1. 一种背光源，包括：
    光源，其配置为发射第一波长的光；
    波长转换装置，其设置在所述光源的出光侧，且配置为使所述第一波长的光在透过所述波长转换装置之后被转换为第二波长的光，所述第二波长不同于所述第一波长；以及
    导光板，其设置于所述波长转换装置的远离所述光源的一侧，且配置为接收自所述波长转换装置出射的光然后将所述光再出射。
  2. 根据权利要求1所述的背光源，其中，
    所述导光板具有彼此相对的出光面和反射面并且具有连接所述出光面和所述反射面的入光面；
    所述波长转换装置设置于所述光源和所述导光板的入光面之间。
  3. 根据权利要求1或2所述的背光源，其中，所述波长转换装置包括：
    波长转换组件，被配置为使所述第一波长的光转换为所述第二波长的光；以及
    固定组件，包括提供容纳空间的侧壁，其中，所述波长转换组件设置在所述固定组件的容纳空间中。
  4. 根据权利要求3所述的背光源，其中，
    所述固定组件的侧壁包括凸向所述波长转换组件的第一凸出部和第二凸出部，
    所述波长转换组件设置于所述第一凸出部和所述第二凸出部之间。
  5. 根据权利要求4所述的背光源，其中，所述固定组件的侧壁还包括凸向所述波长转换组件的第三凸出部，
    所述第一凸出部、所述第二凸出部和所述第三凸出部都位于所述波长转换组件的第一侧，并且所述第三凸出部位于所述第一凸出部和所述第二凸出部之间。
  6. 根据权利要求5所述的背光源，其中，
    所述固定组件的侧壁还包括凸向所述波长转换组件的第四凸出部和第五凸出部，
    所述第四凸出部和所述第五凸出部位于所述波长转换组件的第二侧，所述 第二侧与所述第一侧相对。
  7. 根据权利要求3-6中任一项所述的背光源，其中，
    所述固定组件的侧壁形成位于所述光源和所述波长转换组件之间的反射腔体，所述固定组件的侧壁在所述反射腔体处设置有反射面。
  8. 根据权利要求7所述的背光源，其中，所述反射面相对于所述光源的出光面倾斜设置。
  9. 根据权利要求7所述的背光源，其中，
    在从所述反射腔体到所述容纳空间的方向上，所述反射腔体的口径逐渐增大。
  10. 根据权利要求3-9中任一项所述的背光源，其中，所述固定组件的端部形成有开口，所述开口处设置有所述光源。
  11. 根据权利要求3-9中任一项所述的背光源，其中，所述固定组件的侧壁包括彼此相对的第一壳体和第二壳体以形成所述容纳空间。
  12. 根据权利要求3-9中任一项所述的背光源，其中，所述波长转换组件包括发光材料。
  13. 根据权利要求1-12中任一项所述的背光源，还包括散热板，其中，所述散热板包括挡板以及与所述挡板连接的承载板，所述挡板与所述承载板之间形成容纳空间，所述光源、所述波长转换装置和所述导光板设置于所述散热板的容纳空间中。
  14. 根据权利要求13所述的背光源，其中，所述散热板的承载板具有凸向所述导光板的凸台，所述凸台位于所述波长转换装置的远离所述光源的一侧以限定所述波长转换装置的位置。
  15. 根据权利要求1-12中任一项所述的背光源，还包括胶框，其中，所述胶框包括挡板以及与所述挡板连接的定位结构，所述挡板与所述定位结构之间形成容纳空间，所述光源和所述波长转换装置设置于所述容纳空间中。
  16. 根据权利要求15所述的背光源，其中，所述胶框的定位结构设置有凸出部，所述凸出部设置于所述波长转换装置的远离所述光源的一侧以限定所述波长转换装置的位置。
  17. 一种显示装置，包括权利要求1至16中任一项所述的背光源。
  18. 一种背光源的组装方法，包括：
    在光源的出光侧设置波长转换装置，其中，所述波长转换装置配置为使第 一波长的光在透过所述波长转换装置之后被转换为第二波长的光，所述第二波长不同于所述第一波长；以及
    在所述波长转换装置的远离所述光源的一侧设置导光板，使所述导光板位于自波长转换装置出射的光的照射范围内。
  19. 根据权利要求18所述的组装方法，其中，所述波长转换装置包括固定组件和波长转换组件，所述固定组件包括第一壳体和第二壳体，所述第一壳体和所述第二壳体相对设置以形成容纳空间，所述波长转换装置的组装方法包括：
    对所述波长转换装置的固定组件包括的第一壳体和第二壳体的端部施加相反的作用力，以使所述第一壳体和所述第二壳体之间形成空隙；以及
    将所述波长转换组件从所述空隙放入所述容纳空间中。
  20. 根据权利要求18或19所述的组装方法，还包括：
    在所述光源、所述波长转换装置和所述导光板上放置胶框，以固定所述光源、所述波长转换装置和所述导光板之间的相对位置。
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170045206A (ko) * 2014-08-22 2017-04-26 엔에스 마테리얼스 아이엔씨. 파장 변환 부재, 및 그를 이용한 발광 장치, 발광 소자, 광원 장치, 그리고 표시 장치
EP3354963A4 (en) * 2015-09-24 2018-09-26 Sharp Kabushiki Kaisha Illumination device, display device, and television receiver
KR102583712B1 (ko) * 2016-12-22 2023-09-27 엘지디스플레이 주식회사 디스플레이 장치
US11835747B2 (en) * 2019-06-21 2023-12-05 Signify Holding B.V. HLD module with improved cooling of a luminescent body
CN113009737B (zh) * 2019-12-19 2022-07-29 京东方科技集团股份有限公司 背光模组和显示装置
CN112162436B (zh) * 2020-11-13 2022-04-08 福州大学 一种量子点背光模组结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798038A (zh) * 2012-06-14 2012-11-28 友达光电股份有限公司 背光模块
CN102889489A (zh) * 2011-07-19 2013-01-23 纬创资通股份有限公司 灯条结构及光源装置
CN103487990A (zh) * 2012-06-12 2014-01-01 三星电子株式会社 液晶显示模块和具有其的液晶显示装置
CN104503135A (zh) * 2014-12-19 2015-04-08 青岛海信电器股份有限公司 一种光源组件、显示模组及显示装置
US20150234111A1 (en) * 2014-02-14 2015-08-20 Samsung Display Co., Ltd. Backlight unit

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6092522B2 (ja) * 2012-04-11 2017-03-08 サターン ライセンシング エルエルシーＳａｔｕｒｎ Ｌｉｃｅｎｓｉｎｇ ＬＬＣ 発光装置、表示装置および照明装置
CN104755830B (zh) * 2012-11-09 2018-01-30 索尼公司 照明装置和显示装置
JP2014165116A (ja) * 2013-02-27 2014-09-08 Sony Corp 照明装置および表示装置
US9645297B2 (en) * 2013-10-11 2017-05-09 Shenzhen China Star Optoelectronics Technology Co., Ltd Backlight module and liquid crystal display comprising light conversion unit
CN103885243B (zh) * 2014-01-27 2017-04-19 深圳市华星光电技术有限公司 背光模组及包括该背光模组的液晶显示器
US9551826B2 (en) 2014-01-27 2017-01-24 Shenzhen China Star Optoelectronics Technology Co., Ltd. LCD with backlight module having quantum dot unit and frame
KR102110271B1 (ko) * 2014-02-05 2020-05-14 삼성디스플레이 주식회사 양자점바 수납 용기 및 이를 포함하는 백라이트 유닛
KR102137137B1 (ko) * 2014-02-11 2020-07-27 삼성디스플레이 주식회사 양자점바 수납 용기 및 이를 포함하는 백라이트 유닛
CN103775925B (zh) * 2014-02-25 2016-06-01 深圳市华星光电技术有限公司 背光模组
US9256024B2 (en) * 2014-03-14 2016-02-09 Shenzhen China Star Optoelectronics Technology Co., Ltd Backlight module
KR20150117751A (ko) * 2014-04-10 2015-10-21 삼성디스플레이 주식회사 표시 장치
CN103941475B (zh) * 2014-04-30 2016-10-05 深圳市华星光电技术有限公司 一种液晶模组及液晶显示装置
CN104019406B (zh) * 2014-06-04 2016-07-06 深圳市华星光电技术有限公司 背光模组及液晶显示装置
US9851497B2 (en) * 2014-06-11 2017-12-26 Samsung Electronics Co., Ltd. Light mixing chamber for use with color converting material and light guide plate and assembly
CN104635380B (zh) * 2015-03-02 2017-10-24 深圳市华星光电技术有限公司 具有量子条的背光模组以及液晶显示装置
KR102318262B1 (ko) * 2015-03-11 2021-10-27 삼성디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시 장치
CN104776362B (zh) * 2015-04-24 2017-04-12 深圳市华星光电技术有限公司 背光模组和液晶显示器
CN205210481U (zh) * 2015-12-16 2016-05-04 深圳Tcl新技术有限公司 背光模组及显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889489A (zh) * 2011-07-19 2013-01-23 纬创资通股份有限公司 灯条结构及光源装置
CN103487990A (zh) * 2012-06-12 2014-01-01 三星电子株式会社 液晶显示模块和具有其的液晶显示装置
CN102798038A (zh) * 2012-06-14 2012-11-28 友达光电股份有限公司 背光模块
US20150234111A1 (en) * 2014-02-14 2015-08-20 Samsung Display Co., Ltd. Backlight unit
CN104503135A (zh) * 2014-12-19 2015-04-08 青岛海信电器股份有限公司 一种光源组件、显示模组及显示装置

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