WO2016070443A1 - 一种背光模组及液晶显示装置 - Google Patents

一种背光模组及液晶显示装置 Download PDF

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Publication number
WO2016070443A1
WO2016070443A1 PCT/CN2014/090857 CN2014090857W WO2016070443A1 WO 2016070443 A1 WO2016070443 A1 WO 2016070443A1 CN 2014090857 W CN2014090857 W CN 2014090857W WO 2016070443 A1 WO2016070443 A1 WO 2016070443A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
light
deformation
backlight module
Prior art date
Application number
PCT/CN2014/090857
Other languages
English (en)
French (fr)
Inventor
俞刚
Original Assignee
深圳市华星光电技术有限公司
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 深圳市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 DE112014007143.9T priority Critical patent/DE112014007143T5/de
Priority to US14/411,353 priority patent/US9411094B2/en
Priority to EA201791006A priority patent/EA032949B1/ru
Priority to GB1707964.1A priority patent/GB2547836B/en
Priority to JP2017524048A priority patent/JP6378838B2/ja
Priority to KR1020177013273A priority patent/KR102062214B1/ko
Publication of WO2016070443A1 publication Critical patent/WO2016070443A1/zh

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Classifications

    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • 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
    • 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
    • G02F1/133606—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
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a liquid crystal display device.
  • the silicon dioxide sheet 200 is generally used to maintain the coupling distance between the light-emitting surface of the light source and the light-incident surface of the light guide plate 300.
  • the silicon dioxide sheet 200 is disposed on the light guide plate. Between 300 and the side of the backing plate 100.
  • the light guide plate 300 can stably diffuse the incident light of the light source while ensuring that the coupled light distance is constant, and the light output brightness of the light guide plate 300 is ensured.
  • the coupling distance between the light-emitting surface of the light source and the light-incident surface of the light guide plate 300 can remain unchanged due to the expansion of the light guide plate 300 and the silicon dioxide sheet 200.
  • the light output brightness of the light guide plate 300 is not affected.
  • the coupling distance becomes large, so that the light-emitting brightness of the light guide plate 300 becomes small. This phenomenon is particularly serious when light is incident on one side.
  • An object of the present invention is to provide a backlight module and a liquid crystal display device, which are intended to solve the problem of using a silica gel sheet to maintain a coupling distance between a light-emitting surface of a light source and a light-incident surface of the light guide plate.
  • the coupling light distance becomes large, and the light-emitting brightness of the light guide plate becomes small.
  • the present invention provides a backlight module including a light guide plate, a light source, and a back plate for assembling the light guide plate and the light source.
  • the light source is disposed on a first side of the back plate, and the light source is lighted out.
  • the surface of the light guide plate has a coupling distance between the light incident surface and the light incident surface of the light guide plate, wherein the backlight module further includes the coupling between the light emitting surface of the light source and the light incident surface of the light guide plate a positioning assembly having a constant light distance; the positioning assembly is disposed between the second side of the backboard and the fixing surface of the light guide plate, the first side and the second side are oppositely disposed, the guide a fixing surface of the light plate and a light incident surface of the light guide plate are oppositely disposed;
  • the positioning assembly includes: an elastic ring having a through hole in the middle; and a spring piece.
  • the elastic piece includes a closed end and two free ends, and the two free ends are bent outward to form an opening; the elastic piece is worn.
  • the closed end is fixed on the second side of the back plate, and the two free ends are respectively in contact with the fixing surface of the light guide plate; the elastic ring
  • the width of the through hole and the opening width of the elastic piece can be set according to the actual positioning space of the light guide plate;
  • the elastic ring when the temperature changes, the elastic ring generates the first deformation, the light guide plate generates a second deformation; the coupling light distance is maintained under the action of the first deformation and the second deformation change.
  • the elastic piece has a shape of a few characters.
  • the elastic piece has a herringbone shape.
  • the elastic ring is made of a plastic material
  • the elastic piece is made of an elastic material
  • the positioning component comprises: a plastic component, a rotating shaft, and a rigid component, one side of the plastic component is fixed to the second side of the backboard, and the rigid component is rotatably sleeved on the a fixed end of the rigid member is fixedly connected to the plastic member, a free end of the rigid member is in contact with a fixing surface of the light guide plate, and the rotating shaft is fixed on the back plate;
  • the plastic member when the temperature changes, the plastic member generates the first deformation, the light guide plate generates a second deformation; the coupling light distance is maintained under the action of the first deformation and the second deformation change.
  • the rotating shaft is integrally formed with the back plate.
  • the fixed end of the rigid member has an angle with the free end of the rigid member.
  • the distance from the free end of the rigid member to the rotating shaft is greater than the distance from the rotating shaft to the fixing surface of the light guide plate.
  • the present invention also provides a backlight module, including a light guide plate, a light source, and a back plate for assembling the light guide plate and the light source; the light source is disposed on a first side of the back plate, the light source The light emitting surface has a coupling distance between the light incident surface and the light incident surface of the light guide plate, and the backlight module further includes the coupling for holding the light emitting surface of the light source to the light incident surface of the light guide plate.
  • the positioning assembly is disposed between the second side of the backboard and the fixing surface of the light guide plate, the first side and the second side are oppositely disposed, the guide a fixing surface of the light plate and a light incident surface of the light guide plate are oppositely disposed;
  • the positioning component when the temperature changes, the positioning component generates a first deformation, the light guide plate generates a second deformation, and the coupling light distance remains unchanged under the action of the first deformation and the second deformation.
  • the positioning component comprises: an elastic ring with a through hole in the middle and a spring piece, the elastic piece includes a closed end and two free ends, and the two free ends are bent outward to form an opening; the elastic piece Passing through the through hole of the elastic ring, the closed end is fixed on the second side of the back plate, and the two free ends are respectively in contact with the fixing surface of the light guide plate;
  • the elastic ring when the temperature changes, the elastic ring generates the first deformation, the light guide plate generates a second deformation; the coupling light distance is maintained under the action of the first deformation and the second deformation change.
  • the elastic piece has a shape of a few characters or a herringbone shape.
  • the elastic ring is made of a plastic material
  • the elastic piece is made of an elastic material
  • the positioning component comprises: a plastic component, a rotating shaft, and a rigid component, one side of the plastic component is fixed to the second side of the backboard, and the rigid component is rotatably sleeved a fixed end of the rigid member is fixedly connected to the plastic member, a free end of the rigid member is in contact with a fixing surface of the light guide plate, and the rotating shaft is fixed on the back plate;
  • the plastic member when the temperature changes, the plastic member generates the first deformation, the light guide plate generates a second deformation; the coupling light distance is maintained under the action of the first deformation and the second deformation change.
  • the free end of the rigid member is not in contact with the fixing surface of the light guide plate
  • the rotating shaft is integrally formed with the back plate.
  • the fixed end of the rigid member has an angle with the free end of the rigid member.
  • the distance from the free end of the rigid member to the rotating shaft is greater than the distance from the rotating shaft to the fixing surface of the light guide plate.
  • the present invention also provides a liquid crystal display device including the backlight module described above.
  • the backlight module and the liquid crystal display device provided by the present invention serve as a positioning component by the cooperation of the plastic structure and the elastic structure, and change the shape of the elastic structure by the shrinkage of the plastic structure when the temperature occurs.
  • the positioning assembly When changing, the positioning assembly generates a first deformation, and the light guide plate produces a second deformation, and the coupling light distance remains unchanged under the action of the first deformation and the second deformation.
  • the invention improves the positioning reliability of the light guide plate at a low temperature, and does not affect the light exiting brightness of the light guide plate.
  • FIG. 1 is a schematic structural view of a backlight module provided by the prior art
  • FIG. 2 is a schematic structural diagram of a backlight module at normal temperature according to Embodiment 1 of the present invention
  • FIG. 3 is an exploded perspective view of a positioning component according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a backlight module at a low temperature according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic structural diagram of a backlight module at normal temperature according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of a backlight module at a low temperature according to Embodiment 2 of the present invention.
  • An embodiment of the present invention provides a backlight module, including: a light guide plate, a light source, a back plate for assembling the light guide plate and the light source, and a positioning component;
  • the light source is disposed on the back plate a side surface, a light-emitting surface of the light source and a light-incident surface of the light guide plate have a coupling distance, and the positioning component is configured to maintain a light-emitting surface of the light source between the light-incident surface of the light guide plate
  • the coupling distance is constant;
  • the positioning component is disposed between the second side of the backboard and the fixing surface of the light guide plate, and the first side and the second side are oppositely disposed, a fixing surface of the light guide plate and a light incident surface of the light guide plate are oppositely disposed;
  • the positioning component when the temperature changes, the positioning component generates a first deformation, the light guide plate generates a second deformation, and the coupling light distance remains unchanged under the action of the first deformation and the second deformation.
  • the deformation pressure when the positioning component is deformed due to temperature, the deformation pressure causes the positioning component to abut the side of the light guide plate, so that the coupling distance remains unchanged.
  • FIG. 2 is a schematic structural view of a backlight module according to a first embodiment of the present invention
  • FIG. 3 is an exploded perspective view of a positioning assembly according to an embodiment of the present invention
  • a schematic diagram of the structure of a backlight module provided at a low temperature For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the backlight module includes: a light guide plate 101, a light source 102, a back plate 103 for assembling the light guide plate 101 and the light source 102, and a positioning component 104.
  • the light source 102 is disposed on the back plate 103.
  • a side surface, a light-emitting surface of the light source 102 and a light-incident surface of the light guide plate 101 have a coupling distance D1
  • the positioning component 104 is disposed on the second side of the back plate 103 and the light guide plate.
  • the first side surface and the second side surface are oppositely disposed, and the fixing surface of the light guide plate 101 and the light incident surface of the light guide plate 101 are oppositely disposed; the positioning component 104 is used for holding The coupling distance D1 between the light exiting surface of the light source 102 and the light incident surface of the light guide plate 101 does not change.
  • the positioning component 104 includes: an elastic ring 1041 having a through hole in the middle, and a spring piece 1042.
  • the elastic piece 1042 includes a closed end and two free ends, and the two free ends are bent outward to form an opening;
  • the elastic piece 1042 is disposed in the through hole of the elastic ring 1041, and the closed end is fixed on the second side of the back plate 103, and the two free ends are respectively associated with the light guide plate 101. Fixed surface contact.
  • the elastic ring 1041 when the temperature changes, the elastic ring 1041 generates the first deformation, the light guide plate 101 generates a second deformation; the coupling light distance D1 acts in the first deformation and the second deformation Keep it unchanged.
  • the elastic piece 1042 can have a shape of a few characters or a herringbone shape.
  • the elastic ring 1041 can be made of a plastic material, such as silica gel or the like. Therefore, when the temperature is changed, the elastic ring 1041 made of a plastic material can be deformed according to a change in temperature.
  • the elastic piece 1042 may be made of an elastic material, for example, a plastic material, a metal material, or the like.
  • the elastic ring 1041 made of a plastic material can be deformed according to a change in temperature.
  • the pressure generated by the retraction is used to press the elastic piece. 1042, the two free ends of the elastic piece 1042 are respectively in contact with the fixing surface of the light guide plate 101, so that the two free ends of the elastic piece 1042 are inwardly bent to form an opening which is formed by the outer side to keep the light source.
  • the coupling distance D1 between the light exiting surface of 102 and the light incident surface of the light guide plate 101 does not change.
  • the through-hole width of the elastic ring 1041 and the opening width of the elastic piece 1042 can be set according to the actual positioning space of the light guide plate 101.
  • the distance from the free end of the elastic piece 1042 to the elastic ring 1041 is L1, as shown in FIG. 2 .
  • the elastic ring 1041 and the light guide plate 101 are both expanded, but the coupling light between the light emitting surface of the light source 102 and the light incident surface of the light guide plate 101 is substantially not affected.
  • the distance D1 that is, the coupling distance D1 between the light-emitting surface of the light source 102 and the light-incident surface of the light guide plate 101 can be substantially maintained.
  • the light guide plate 101 When the temperature is lowered, the light guide plate 101 generates a second deformation, that is, the light guide plate 101 is contracted, and the length of the light guide plate 101 is changed from A1 to A2 (A2 ⁇ A1).
  • the positioning component 104 generates a first deformation, that is, the elastic ring 1041 shrinks, thereby causing the through hole of the elastic ring 1041 to retract; the pressure generated by the retraction is used to press the elastic piece 1042,
  • the two free ends of the elastic piece 1042 are respectively in contact with the fixing surface of the light guide plate 101, so that the openings formed by bending the two free ends of the elastic piece 1042 outwardly are retracted, and the force generated by the retraction pushes the The light guide plate 101 is moved toward the light source 102.
  • the distance between the second side surface of the back plate 103 and the fixed surface of the light guide plate 101 is changed from H1 to H2, H1 ⁇ H2, as shown in FIG.
  • the backlight module provided in the first embodiment of the present invention, because the elastic ring 1041 is contracted and deformed, the opening of the elastic piece 1042 is retracted, so that the second side of the back plate 103 is to the light guide plate.
  • the distance between the fixed faces of the 101 is changed from H1 to H2, H1 ⁇ H2, and the two free ends of the elastic piece 1042 are always engaged with the light guide plate 101, and the first deformation of the positioning assembly is changed ( H2-H1) compensates for the amount of change (A1-A2) of the second deformation of the light guide plate, ensures that the coupling distance D1 is constant, and avoids the gap caused by the contraction of the light guide plate 101.
  • FIG. 5 is a schematic structural diagram of a backlight module at normal temperature according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic structural diagram of a backlight module at a low temperature according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a backlight module at normal temperature according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic structural diagram of a backlight module at a low temperature according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a backlight module at normal temperature according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic structural diagram of a backlight module at a low temperature according to Embodiment 2 of the present invention.
  • the backlight module includes: a light guide plate 201, a light source 202, a back plate 203 for assembling the light guide plate 201 and the light source 202, and a positioning component 204.
  • the light source 202 is disposed on the back plate 203.
  • a side surface, a light-emitting surface of the light source 202 and a light-incident surface of the light guide plate 201 have a coupling distance D2
  • the positioning component 204 is disposed on the second side of the back plate 203 and the light guide plate.
  • the first side surface and the second side surface are oppositely disposed, and the fixing surface of the light guide plate 201 and the light incident surface of the light guide plate 201 are oppositely disposed; the positioning component 204 is used for holding The coupling distance D2 between the light exiting surface of the light source 202 and the light incident surface of the light guide plate 201 does not change.
  • the positioning component 204 includes a plastic member 2041, a rotating shaft 2042, and a rigid member 2043.
  • One side of the plastic member 2041 is fixed to the second side of the back plate 203, and the rigid member 2043 can be a rotating sleeve is disposed on the rotating shaft 2042, and a fixed end of the rigid member 2043 is fixedly connected to the plastic member 2041, and a free end of the rigid member 2043 is in contact with a fixing surface of the light guide plate 201, wherein
  • the fixed end of the rigid member 2043 has an angle with the free end of the rigid member 2043; the rotating shaft 2042 is fixed on the back plate 203.
  • the plastic member 2041 when the temperature changes, the plastic member 2041 generates the first deformation, the light guide plate 201 generates a second deformation; the coupling light distance D2 acts in the first deformation and the second deformation Keep it unchanged.
  • the other side of the plastic member 2041 is in contact with the fixing surface of the light guide plate 201, the free end of the rigid member 2043 is not in contact with the fixing surface of the light guide plate 201; when the plastic member 2041 is another When a side surface is not in contact with the fixing surface of the light guide plate 201, the free end of the rigid member 2043 is in contact with the fixing surface of the light guide plate 201.
  • the free end of the rigid member 2043 is a free end that is suspended at normal temperature.
  • the plastic member 2041 may be made of a plastic material, such as a silicone sheet or the like. Therefore, when the temperature is changed, the plastic member 2041 made of a plastic material can be deformed according to a change in temperature.
  • the rigid member 2043 may be made of an elastic material, for example, a plastic material, a metal material, or the like.
  • the plastic member 2041 made of a plastic material may be deformed according to a change in temperature.
  • the plastic member 2041 is contracted to rotate the rigid member 2043, and the rigid member 2043 is free.
  • the end is in contact with the fixing surface of the light guide plate 201 to rotate against the light guide plate 201 to maintain the coupling light between the light exit surface of the light source 202 and the light incident surface of the light guide plate 201.
  • Distance D2 does not change.
  • the rotating shaft 2042 is integrally formed with the back plate 203.
  • the rotating shaft 2042 may also be a rivet.
  • the distance from the free end of the rigid member 2043 to the rotating shaft 2042 is greater than the distance from the rotating shaft 2042 to the fixing surface of the light guide plate 201.
  • the light guide plate 201 When the temperature is lowered, the light guide plate 201 generates a second deformation, that is, the light guide plate 201 is contracted, and the length of the light guide plate 201 is changed from A3 to A4 (A4 ⁇ A3).
  • the positioning component 204 generates a first deformation, that is, the plastic member 2041 is contracted, the plastic member 2041 is separated from the light guide plate 201, and a gap occurs between the plastic member 2041 and the light guide plate 201, but Due to the contraction of the rigid member 2043 by the plastic member 2041, the free end of the rigid member 2043 contacts the side of the light guide plate 201 due to the rotation, thereby resisting the light guide plate 201, that is, the rigidity.
  • the free end of the member 2043 changes from being in contact with the light guide plate 201 to become in contact with the light guide plate 201, and the force generated by the rotation thereby pushes the light guide plate 101 to move toward the light source 102, and the back plate 203
  • the coupling distance D2 between the light incident surfaces of the light guide plate 201 does not change. As shown in Figure 6.
  • the rigid member 2043 is rotated by the plastic member 2041, and the free end of the rigid member 2043 is fixed to the light guide plate 201 by rotation.
  • the distance between the fixed faces of the light guide plate 201 is changed from H3 to H4, H3 ⁇ H4, and the amount of change in the first deformation of the positioning assembly (H4-H3) just compensates for the change in the second deformation of the light guide plate (A3- A4) ensures that the coupling distance D2 is constant, and the gap caused by the contraction of the light guide plate 201 is avoided.
  • the embodiment of the present invention further provides a liquid crystal display device, which includes the backlight module described above.
  • a liquid crystal display device which includes the backlight module described above.
  • the structure of the backlight module has been described in detail above, and therefore, details are not described herein.
  • the backlight module and the liquid crystal display device serve as a positioning component by the cooperation of the plastic structure and the elastic structure, and change the shape of the elastic structure by shrinking the plastic structure.
  • the positioning component When the temperature changes, the positioning component generates a first deformation, and the light guide plate generates a second deformation, and the coupling light distance remains unchanged under the action of the first deformation and the second deformation.
  • the invention improves the positioning reliability of the light guide plate at a low temperature, and does not affect the light exiting brightness of the light guide plate.

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Abstract

一种背光模组，包括导光板（101）、光源（102）、背板（103）、用于保持光源（102）的出光面到导光板（101）的入光面之间的耦光距离（D1）不变的定位组件（104）；光源（102）的出光面与导光板（101）的入光面之间具有耦光距离（D1）；当温度发生变化时，定位组件（104）产生第一形变，导光板（101）产生第二形变，耦光距离（D1）在第一形变和第二形变的作用下保持不变。本发明提高了导光板（101）的定位可靠性。

Description

一种背光模组及液晶显示装置 技术领域
本发明涉及显示技术领域，特别涉及一种背光模组及液晶显示装置。
 背景技术
请参照图1，在现有的背光模组设计中，通常采用硅胶片200来保持光源的出光面与导光板300的入光面之间的耦光距离，如将硅胶片200设置在导光板300和背板100的侧面之间。在保证耦光距离不变的情况下，导光板300对光源的入射光能够起到稳定的发散作用，保证了导光板300的出光亮度。
在高温和常温的情况下，由于所述导光板300及所述硅胶片200的膨胀，所述光源的出光面与导光板300的入光面之间的耦光距离尚能保持不变，因此不影响所述导光板300的出光亮度。但是在低温的情况下，导光板300和硅胶片200皆出现收缩现象时，这时耦光距离会变大，从而使得导光板300的出光亮度变小。该现象在单侧入光时尤为严重。
故，有必要提出一种新的技术方案，以解决上述技术问题。
 技术问题
本发明的目的在于提供一种背光模组及液晶显示装置，旨在解决现有技术中存在的采用硅胶片来保持光源的出光面与导光板的入光面之间的耦光距离，在低温的情况下，所述导光板和所述硅胶片皆出现收缩现象时，这时耦光距离会变大，从而使得导光板的出光亮度变小的问题。
 技术解决方案
本发明提供一种背光模组，包括导光板、光源、以及用于组装所述导光板及所述光源的背板；所述光源设置于所述背板的第一侧面，所述光源的出光面与所述导光板的入光面之间具有一耦光距离，其中所述背光模组还包括用于保持所述光源的出光面到所述导光板的入光面之间的所述耦光距离不变的定位组件；所述定位组件设置在所述背板的第二侧面和所述导光板的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板的固定面和所述导光板的入光面相对设置；
其中，所述定位组件包括：中间具有通孔的弹性圈以及弹片，所述弹片包括一封闭端以及二个自由端，所述二个自由端向外侧弯折形成一开口；所述弹片穿设于所述弹性圈的所述通孔中，所述封闭端固定在所述背板的第二侧面上，所述二个自由端分别与所述导光板的固定面接触；所述弹性圈的通孔宽度以及所述弹片的开口宽度可根据实际的所述导光板定位空间来设定；
其中，当温度发生变化时，所述弹性圈产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
优选的，其中所述弹片呈几字形状。
优选的，其中所述弹片呈人字形状。
优选的，其中所述弹性圈采用塑胶材料制成，所述弹片采用弹性材料制成。
优选的，其中所述定位组件包括：一塑性构件、一转轴、以及一刚性构件，所述塑性构件的一侧面固定于所述背板的第二侧面，所述刚性构件可旋转的套设在所述转轴上，所述刚性构件的固定端与所述塑性构件固定连接，所述刚性构件的自由端与所述导光板的固定面接触，所述转轴固定在所述背板上；
其中，当温度发生变化时，所述塑性构件产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
优选的，其中
当所述塑性构件的另一侧面与所述导光板的固定面接触时，所述刚性构件的自由端不与所述导光板的固定面接触；
当所述塑性构件的另一侧面不与所述导光板的固定面接触时，所述刚性构件的自由端与所述导光板的固定面接触。
优选的，其中所述转轴与所述背板一体成型。
优选的，其中所述刚性构件的固定端与所述刚性构件的自由端具有一夹角。
优选的，其中所述刚性构件的自由端到所述转轴的距离大于所述转轴到所述导光板的固定面的距离。
本发明还提供一种背光模组，包括导光板、光源、以及用于组装所述导光板及所述光源的背板；所述光源设置于所述背板的第一侧面，所述光源的出光面与所述导光板的入光面之间具有一耦光距离，所述背光模组还包括用于保持所述光源的出光面到所述导光板的入光面之间的所述耦光距离不变的定位组件；所述定位组件设置在所述背板的第二侧面和所述导光板的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板的固定面和所述导光板的入光面相对设置；
其中，当温度发生变化时，所述定位组件产生第一形变，所述导光板产生第二形变，所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
优选的，所述定位组件包括：中间具有通孔的弹性圈以及弹片，所述弹片包括一封闭端以及二个自由端，所述二个自由端向外侧弯折形成一开口；所述弹片穿设于所述弹性圈的所述通孔中，所述封闭端固定在所述背板的第二侧面上，所述二个自由端分别与所述导光板的固定面接触；
其中，当温度发生变化时，所述弹性圈产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
优选的，所述弹片呈几字形状或者是呈人字形状。
优选的，所述弹性圈采用塑胶材料制成，所述弹片采用弹性材料制成。
优选的，所述定位组件包括：一塑性构件、一转轴、以及一刚性构件，所述塑性构件的一侧面固定于所述背板的第二侧面，所述刚性构件可旋转的套设在所述转轴上，所述刚性构件的固定端与所述塑性构件固定连接，所述刚性构件的自由端与所述导光板的固定面接触，所述转轴固定在所述背板上；
其中，当温度发生变化时，所述塑性构件产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
优选的，当所述塑性构件的另一侧面与所述导光板的固定面接触时，所述刚性构件的自由端不与所述导光板的固定面接触；
当所述塑性构件的另一侧面不与所述导光板的固定面接触时，所述刚性构件的自由端与所述导光板的固定面接触。
优选的，所述转轴与所述背板一体成型。
优选的，所述刚性构件的固定端与所述刚性构件的自由端具有一夹角。
优选的，所述刚性构件的自由端到所述转轴的距离大于所述转轴到所述导光板的固定面的距离。
本发明还提供了一种包括上面所述的背光模组的液晶显示装置。
 有益效果
相对现有技术，本发明提供的背光模组及液晶显示装置，通过塑性结构与弹性结构的配合来作为定位组件，且通过所述塑性结构的收缩，改变所述弹性结构的形态，当温度发生变化时，定位组件产生第一形变，导光板产生第二形变，耦光距离在所述第一形变和所述第二形变的作用下保持不变。本发明提高了低温下所述导光板的定位可靠性，且不影响所述导光板的出光亮度。
 附图说明
图1为现有技术提供的背光模组的结构示意图；
图2为本发明实施例一提供的常温下的背光模组的结构示意图；
图3为本发明实施例提供的定位组件的分解示意图；
图4为本发明实施例一提供的低温下的背光模组的结构示意图；
图5为本发明实施例二提供的常温下的背光模组的结构示意图；
图6为本发明实施例二提供的低温下的背光模组的结构示意图。
 本发明的最佳实施方式
本说明书所使用的词语“实施例”意指用作实例、示例或例证。此外，本说明书和所附权利要求中所使用的冠词“一”一般地可以被解释为意指“一个或多个”，除非另外指定或从上下文清楚导向单数形式。
本发明实施例提供了一种背光模组，其包括：导光板、光源、用于组装所述导光板及所述光源的背板、以及定位组件；所述光源设置于所述背板的第一侧面，所述光源的出光面与所述导光板的入光面之间具有一耦光距离，所述定位组件用于保持所述光源的出光面到所述导光板的入光面之间的所述耦光距离不变；所述定位组件设置在所述背板的第二侧面和所述导光板的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板的固定面和所述导光板的入光面相对设置；
其中，当温度发生变化时，所述定位组件产生第一形变，所述导光板产生第二形变，所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。其中，当所述定位组件由于温度产生形变时，形变的压力使得所述定位组件与所述导光板的侧面抵接，以使所述耦光距离保持不变。
为了说明本发明所述的技术方案，下面通过具体实施例来进行说明。
实施例一
请参阅图2至图4，图2是本发明实施例一提供的常温下的背光模组的结构示意图；图3为本发明实施例提供的定位组件的分解示意图；图4为本发明实施例一提供的低温下的背光模组的结构示意图。为了便于说明，仅示出了与本发明实施例相关的部分。
所述背光模组包括：导光板101、光源102、用于组装所述导光板101及所述光源102的背板103、以及定位组件104；所述光源102设置于所述背板103的第一侧面，所述光源102的出光面与所述导光板101的入光面之间具有一耦光距离D1，所述定位组件104设置在所述背板103的第二侧面和所述导光板101的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板101的固定面和所述导光板101的入光面相对设置；所述定位组件104用于保持所述光源102的出光面到所述导光板101的入光面之间的所述耦光距离D1不变。
其中，所述定位组件104包括：中间具有通孔的弹性圈1041以及弹片1042，所述弹片1042包括一封闭端以及二个自由端，所述二个自由端向外侧弯折形成一开口；所述弹片1042穿设于所述弹性圈1041的所述通孔中，所述封闭端固定在所述背板103的第二侧面上，所述二个自由端分别与所述导光板101的固定面接触。
其中，当温度发生变化时，所述弹性圈1041产生所述第一形变，所述导光板101产生第二形变；所述耦光距离D1在所述第一形变和所述第二形变的作用下保持不变。
然而，可以理解的是，所述弹片1042可以呈几字形状，或者是呈人字形状。
作为本发明一优选实施例，所述弹性圈1041可以采用塑胶材料制成，例如，硅胶等。因此，当温度改变时，采用塑胶材料制成的所述弹性圈1041可根据温度的改变而产生形变。
作为本发明一优选实施例，所述弹片1042可以采用弹性材料制成，例如，塑胶材料，也可以是金属材料等。当温度改变时，采用塑胶材料制成的所述弹性圈1041可根据温度的改变而产生形变，此时，由于所述弹性圈1041内缩，该内缩产生的压力用于压紧所述弹片1042，所述弹片1042的二个自由端分别与所述导光板101的固定面接触，从而使得所述弹片1042的二个自由端向外侧弯折形成的开口内缩，以保持所述光源102的出光面到所述导光板101的入光面之间的所述耦光距离D1不变。
作为本发明一优选实施例，所述弹性圈1041的通孔宽度以及所述弹片1042的开口宽度可根据实际的所述导光板101定位空间来设定。
本发明实施例一提供的背光模组的结构的原理如下：
在常温下，所述弹性圈1041和所述导光板101均不会发生形变，此时，所述弹片1042的自由端到所述弹性圈1041的距离为L1，如图2所示。另外当温度升高时，所述弹性圈1041和所述导光板101均发生膨胀，但基本不影响所述光源102的出光面到所述导光板101的入光面之间的所述耦光距离D1，即所述光源102的出光面到所述导光板101的入光面之间的所述耦光距离D1基本能保持不变。
当温度降低时，所述导光板101产生第二形变，即所述导光板101发生收缩，这时所述导光板101的长度由A1变为A2（A2<A1）。同时所述定位组件104产生第一形变，即所述弹性圈1041发生收缩，进而带动所述弹性圈1041的通孔内缩；该内缩产生的压力用于压紧所述弹片1042，所述弹片1042的二个自由端分别与所述导光板101的固定面接触，从而使得所述弹片1042的二个自由端向外侧弯折形成的开口内缩，该内缩产生的力量从而推动所述导光板101往所述光源102方向移动，此时，所述背板103的第二侧面到所述导光板101的固定面之间的距离由H1变化成为H2，H1〈H2，如图4所示；如（H2-H1）=（A1-A2），则能够保持所述光源102的出光面到所述导光板101的入光面之间的所述耦光距离D1不变。
由上述可知，本发明实施例一提供的背光模组，由于所述弹性圈1041收缩形变从而带动所述弹片1042的开口内缩，进而使得所述背板103的第二侧面到所述导光板101的固定面之间的距离由H1变化成为H2，H1〈H2，实现所述弹片1042的二个自由端始终与所述导光板101配合的状态，且定位组件的第一形变的变化量（H2-H1）正好弥补导光板的第二形变的变化量（A1-A2），保证了耦光距离D1不变，避免了所述导光板101收缩带来的间隙。
实施例二
请参阅图5及图6，图5为本发明实施例二提供的常温下的背光模组的结构示意图；图6为本发明实施例二提供的低温下的背光模组的结构示意图。为了便于说明，仅示出了与本发明实施例相关的部分。
所述背光模组包括：导光板201、光源202、用于组装所述导光板201及所述光源202的背板203、以及定位组件204；所述光源202设置于所述背板203的第一侧面，所述光源202的出光面与所述导光板201的入光面之间具有一耦光距离D2，所述定位组件204设置在所述背板203的第二侧面和所述导光板201的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板201的固定面和所述导光板201的入光面相对设置；所述定位组件204用于保持所述光源202的出光面到所述导光板201的入光面之间的所述耦光距离D2不变。
其中，所述定位组件204包括：一塑性构件2041、一转轴2042、以及一刚性构件2043，所述塑性构件2041的一侧面固定于所述背板203的第二侧面，所述刚性构件2043可旋转的套设在所述转轴2042上，所述刚性构件2043的固定端与所述塑性构件2041固定连接，所述刚性构件2043的自由端与所述导光板201的固定面接触，其中，所述刚性构件2043的固定端与所述刚性构件2043的自由端具有一夹角；所述转轴2042固定在所述背板203上。
其中，当温度发生变化时，所述塑性构件2041产生所述第一形变，所述导光板201产生第二形变；所述耦光距离D2在所述第一形变和所述第二形变的作用下保持不变。当所述塑性构件2041的另一侧面与所述导光板201的固定面接触时，所述刚性构件2043的自由端不与所述导光板201的固定面接触；当所述塑性构件2041的另一侧面不与所述导光板201的固定面接触时，所述刚性构件2043的自由端与所述导光板201的固定面接触。
然而，可以理解的是，所述刚性构件2043的自由端为在常温下呈悬空设置的自由端。
作为本发明一优选实施例，所述塑性构件2041可以采用塑胶材料制成，例如，硅胶片等。因此，当温度改变时，采用塑胶材料制成的所述塑性构件2041可根据温度的改变而产生形变。
作为本发明一优选实施例，所述刚性构件2043可以采用弹性材料制成，例如，塑胶材料，也可以是金属材料等。当温度改变时，采用塑胶材料制成的所述塑性构件2041可根据温度的改变而产生形变，此时，所述塑性构件2041收缩带动所述刚性构件2043发生旋转，所述刚性构件2043的自由端因为旋转而与所述导光板201的固定面接触，从而顶住所述导光板201，以保持所述光源202的出光面到所述导光板201的入光面之间的所述耦光距离D2不变。
作为本发明一优选实施例，所述转轴2042与所述背板203一体成型。
作为本发明另一优选实施例，所述转轴2042也可以为铆钉。
作为本发明另一优选实施例，所述刚性构件2043的自由端到所述转轴2042的距离大于所述转轴2042到所述导光板201的固定面的距离。
本发明实施例二提供的背光模组的结构的原理如下：
在常温下，所述塑性构件2041和所述导光板201均不会发生形变，此时，所述刚性构件2043的自由端呈悬空设置，即所述刚性构件2043的自由端不与所述导光板101接触，所述刚性构件2043的自由端不垂直于所述导光板101的固定面，且角度小于90度，且此时的所述塑性构件2041的另一侧面与所述导光板201的固定面连接，如图5所示。另外当温度升高时，所述塑性构件2041和所述导光板201均发生膨胀，但基本不影响所述光源202的出光面到所述导光板201的入光面之间的所述耦光距离D2，即所述光源202的出光面到所述导光板201的入光面之间的所述耦光距离D2基本能保持不变。
当温度降低时，所述导光板201产生第二形变，即所述导光板201发生收缩，这时所述导光板201的长度由A3变为A4（A4<A3）。同时所述定位组件204产生第一形变，即所述塑性构件2041发生收缩，所述塑性构件2041与所述导光板201分离，所述塑性构件2041与所述导光板201之间出现间隙，但由于所述塑性构件2041收缩带动所述刚性构件2043发生旋转，所述刚性构件2043的自由端因为旋转而与所述导光板201的侧面接触，从而顶住所述导光板201，即所述刚性构件2043的自由端从与所述导光板201不接触变为与所述导光板201接触，该旋转产生的力量从而推动所述导光板101往所述光源102方向移动，所述背板203的第二侧面到所述导光板201的固定面之间的距离由H3变化成为H4，H3〈H4，如（H4-H3）=（A3-A4），则能够保持所述光源202的出光面到所述导光板201的入光面之间的所述耦光距离D2不变。如图6所示。
由上述可知，本发明实施例二提供的背光模组，由于所述塑性构件2041收缩带动所述刚性构件2043发生旋转，所述刚性构件2043的自由端因为旋转而与所述导光板201的固定面接触，即所述刚性构件2043的自由端从与所述导光板201不接触变为与所述导光板201接触，从而顶住所述导光板201，所述背板203的第二侧面到所述导光板201的固定面之间的距离由H3变化成为H4，H3〈H4，定位组件的第一形变的变化量（H4-H3）正好弥补导光板的第二形变的变化量（A3-A4），保证了耦光距离D2不变，避免了所述导光板201收缩带来的间隙。
本发明实施例还提供了一种液晶显示装置，所述液晶显示装置包括上面所述的背光模组，上述已详细描述了背光模组的结构，因此，在此不再赘述。
综上所述，本发明实施例提供的背光模组及液晶显示装置，通过塑性结构与弹性结构的配合来作为定位组件，且通过所述塑性结构的收缩，改变所述弹性结构的形态，当温度发生变化时，定位组件产生第一形变，导光板产生第二形变，耦光距离在所述第一形变和所述第二形变的作用下保持不变。本发明提高了低温下所述导光板的定位可靠性，且不影响所述导光板的出光亮度。
尽管已经相对于一个或多个实现方式示出并描述了本发明，但是本领域技术人员基于对本说明书和附图的阅读和理解将会想到等价变型和修改。本发明包括所有这样的修改和变型，并且仅由所附权利要求的范围限制。特别地关于由上述组件执行的各种功能，用于描述这样的组件的术语旨在对应于执行所述组件的指定功能（例如其在功能上是等价的）的任意组件（除非另外指示），即使在结构上与执行本文所示的本说明书的示范性实现方式中的功能的公开结构不等同。此外，尽管本说明书的特定特征已经相对于若干实现方式中的仅一个被公开，但是这种特征可以与如可以对给定或特定应用而言是期望和有利的其他实现方式的一个或多个其他特征组合。而且，就术语“包括”、“具有”、“含有”或其变形被用在具体实施方式或权利要求中而言，这样的术语旨在以与术语“包含”相似的方式包括。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种背光模组，包括导光板、光源、以及用于组装所述导光板及所述光源的背板；所述光源设置于所述背板的第一侧面，所述光源的出光面与所述导光板的入光面之间具有一耦光距离，其中所述背光模组还包括用于保持所述光源的出光面到所述导光板的入光面之间的所述耦光距离不变的定位组件；所述定位组件设置在所述背板的第二侧面和所述导光板的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板的固定面和所述导光板的入光面相对设置；
    其中，所述定位组件包括：中间具有通孔的弹性圈以及弹片，所述弹片包括一封闭端以及二个自由端，所述二个自由端向外侧弯折形成一开口；所述弹片穿设于所述弹性圈的所述通孔中，所述封闭端固定在所述背板的第二侧面上，所述二个自由端分别与所述导光板的固定面接触；所述弹性圈的通孔宽度以及所述弹片的开口宽度可根据实际的所述导光板定位空间来设定；
    其中，当温度发生变化时，所述弹性圈产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
  2. 根据权利要求1所述的背光模组，其中所述弹片呈几字形状。
  3. 根据权利要求1所述的背光模组，其中所述弹片呈人字形状。
  4. 根据权利要求1所述的背光模组，其中所述弹性圈采用塑胶材料制成，所述弹片采用弹性材料制成。
  5. 根据权利要求1所述的背光模组，其中所述定位组件包括：一塑性构件、一转轴、以及一刚性构件，所述塑性构件的一侧面固定于所述背板的第二侧面，所述刚性构件可旋转的套设在所述转轴上，所述刚性构件的固定端与所述塑性构件固定连接，所述刚性构件的自由端与所述导光板的固定面接触，所述转轴固定在所述背板上；
    其中，当温度发生变化时，所述塑性构件产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
  6. 根据权利要求5所述的背光模组，其中
    当所述塑性构件的另一侧面与所述导光板的固定面接触时，所述刚性构件的自由端不与所述导光板的固定面接触；
    当所述塑性构件的另一侧面不与所述导光板的固定面接触时，所述刚性构件的自由端与所述导光板的固定面接触。
  7. 根据权利要求5所述的背光模组，其中所述转轴与所述背板一体成型。
  8. 根据权利要求5所述的背光模组，其中所述刚性构件的固定端与所述刚性构件的自由端具有一夹角。
  9. 根据权利要求5所述的背光模组，其中所述刚性构件的自由端到所述转轴的距离大于所述转轴到所述导光板的固定面的距离。
  10. 一种背光模组，包括导光板、光源、以及用于组装所述导光板及所述光源的背板；所述光源设置于所述背板的第一侧面，所述光源的出光面与所述导光板的入光面之间具有一耦光距离，其中所述背光模组还包括用于保持所述光源的出光面到所述导光板的入光面之间的所述耦光距离不变的定位组件；所述定位组件设置在所述背板的第二侧面和所述导光板的固定面之间，所述第一侧面和所述第二侧面相对设置，所述导光板的固定面和所述导光板的入光面相对设置；
    其中，当温度发生变化时，所述定位组件产生第一形变，所述导光板产生第二形变，所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
  11. 根据权利要求10所述的背光模组，其中所述定位组件包括：中间具有通孔的弹性圈以及弹片，所述弹片包括一封闭端以及二个自由端，所述二个自由端向外侧弯折形成一开口；所述弹片穿设于所述弹性圈的所述通孔中，所述封闭端固定在所述背板的第二侧面上，所述二个自由端分别与所述导光板的固定面接触；
    其中，当温度发生变化时，所述弹性圈产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
  12. 根据权利要求11所述的背光模组，其中所述弹片呈几字形状。
  13. 根据权利要求11所述的背光模组，其中所述弹片呈人字形状。
  14. 根据权利要求11所述的背光模组，其中所述弹性圈采用塑胶材料制成，所述弹片采用弹性材料制成。
  15. 根据权利要求10所述的背光模组，其中所述定位组件包括：一塑性构件、一转轴、以及一刚性构件，所述塑性构件的一侧面固定于所述背板的第二侧面，所述刚性构件可旋转的套设在所述转轴上，所述刚性构件的固定端与所述塑性构件固定连接，所述刚性构件的自由端与所述导光板的固定面接触，所述转轴固定在所述背板上；
    其中，当温度发生变化时，所述塑性构件产生所述第一形变，所述导光板产生第二形变；所述耦光距离在所述第一形变和所述第二形变的作用下保持不变。
  16. 根据权利要求15所述的背光模组，其中
    当所述塑性构件的另一侧面与所述导光板的固定面接触时，所述刚性构件的自由端不与所述导光板的固定面接触；
    当所述塑性构件的另一侧面不与所述导光板的固定面接触时，所述刚性构件的自由端与所述导光板的固定面接触。
  17. 根据权利要求15所述的背光模组，其中所述转轴与所述背板一体成型。
  18. 根据权利要求15所述的背光模组，其中所述刚性构件的固定端与所述刚性构件的自由端具有一夹角。
  19. 根据权利要求15所述的背光模组，其中所述刚性构件的自由端到所述转轴的距离大于所述转轴到所述导光板的固定面的距离。
  20. 一种包括权利要求10至19任一项所述的背光模组的液晶显示装置。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001021884A (ja) * 1999-07-08 2001-01-26 Advanced Display Inc 液晶表示装置
JP2009158233A (ja) * 2007-12-26 2009-07-16 Omron Corp 光源装置及び液晶表示装置
CN201359237Y (zh) * 2009-03-06 2009-12-09 北京京东方光电科技有限公司 背光模组
CN102635816A (zh) * 2012-03-29 2012-08-15 深圳市华星光电技术有限公司 背光模块及液晶显示装置
CN103134007A (zh) * 2013-03-15 2013-06-05 深圳市华星光电技术有限公司 导光板定位结构及背光模组

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005300673A (ja) * 2004-04-07 2005-10-27 Hitachi Displays Ltd 液晶表示装置
WO2010064501A1 (ja) * 2008-12-05 2010-06-10 シャープ株式会社 照明装置及び表示装置
KR20100122679A (ko) * 2009-05-13 2010-11-23 엘지이노텍 주식회사 백라이트 유닛 및 이를 이용한 액정표시장치
WO2012086509A1 (ja) * 2010-12-22 2012-06-28 シャープ株式会社 照明装置、表示装置及びテレビ受信装置
JP2012237826A (ja) * 2011-05-10 2012-12-06 Funai Electric Co Ltd 液晶モジュール
US8964142B2 (en) * 2012-03-29 2015-02-24 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and liquid crystal display device
US8958030B2 (en) * 2012-05-10 2015-02-17 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight unit having buffer structures and liquid crystal display device using the same
JP2014026838A (ja) * 2012-07-27 2014-02-06 Jst Mfg Co Ltd バックライトアセンブリ
US9310550B2 (en) * 2013-03-15 2016-04-12 Shenzhen China Star Optoelectronics Technology Co., Ltd. Positioning device for light guide plate and backlight module
US8985801B2 (en) * 2013-04-19 2015-03-24 Shenzhen China Star Optoelectronics Technology Co., Ltd. Light guide plate fixing structure and a backlight module using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001021884A (ja) * 1999-07-08 2001-01-26 Advanced Display Inc 液晶表示装置
JP2009158233A (ja) * 2007-12-26 2009-07-16 Omron Corp 光源装置及び液晶表示装置
CN201359237Y (zh) * 2009-03-06 2009-12-09 北京京东方光电科技有限公司 背光模组
CN102635816A (zh) * 2012-03-29 2012-08-15 深圳市华星光电技术有限公司 背光模块及液晶显示装置
CN103134007A (zh) * 2013-03-15 2013-06-05 深圳市华星光电技术有限公司 导光板定位结构及背光模组

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US9411094B2 (en) 2016-08-09
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