WO2020258784A1 - 扩散板及其制造方法、背光模组、显示装置 - Google Patents

扩散板及其制造方法、背光模组、显示装置 Download PDF

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Publication number
WO2020258784A1
WO2020258784A1 PCT/CN2019/127748 CN2019127748W WO2020258784A1 WO 2020258784 A1 WO2020258784 A1 WO 2020258784A1 CN 2019127748 W CN2019127748 W CN 2019127748W WO 2020258784 A1 WO2020258784 A1 WO 2020258784A1
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WIPO (PCT)
Prior art keywords
cavity
quantum dot
containing cavity
transparent
backlight module
Prior art date
Application number
PCT/CN2019/127748
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English (en)
French (fr)
Inventor
付琳琳
李德华
Original Assignee
惠州市华星光电技术有限公司
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Application filed by 惠州市华星光电技术有限公司 filed Critical 惠州市华星光电技术有限公司
Publication of WO2020258784A1 publication Critical patent/WO2020258784A1/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
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to a diffuser plate and a manufacturing method thereof, a backlight module, and a display device.
  • the backlight technology of quantum dots can make the liquid crystal display panel achieve 110% standard color gamut, which is much higher than the 90%-100% standard color gamut of traditional liquid crystal display panels, and has been widely used.
  • the conventional quantum dot backlight module includes a plastic frame 101, an optical film 102, a quantum dot particle layer 103, a diffuser 104, a light source 105, a reflective sheet 106, and a back plate 107.
  • the plastic frame 101 Including the right front frame 1011, the left front frame 1012, the right middle frame 1013, and the left middle frame 1014, the quantum dot particle layer 103 is located above the diffuser 104; as shown in FIG. 1b, the quantum dot particle layer 103 includes the first A barrier film 1031, a second barrier film 1033, and a quantum dot particle layer 1032 sandwiched between the first barrier film 1031 and the second barrier film 1033.
  • the first barrier film 1031 and the second barrier film 1033 are expensive to manufacture;
  • the quantum dot particles 10321 in the dot particle layer 1032 have poor moisture resistance and high temperature resistance.
  • the first barrier film 1031, the second barrier film 1033, and the edge areas on both sides of the backlight module cannot completely block water and oxygen, so long-term use and cutting In the case of bad conditions, high temperature, high humidity, or water and oxygen, the quantum dot particles in the edge regions on both sides will fail, causing the edge regions on both sides to be unable to excite red and green light by blue light, and directly pass through the blue light to form a blue edge.
  • the light emitting diode (Light Emitting Diode) in the light source 105 in the prior art Diode (LED for short) adopts quantum tube technology, that is, a vacuum tube coated with quantum dots 1052 is added to the front of the LED light bar structure 1051.
  • the assembly space of the quantum dot vacuum tube 1042 needs to be preset, which is not conducive to the narrow frame appearance of the backlight module The design, and there is no matching reflective sheet 106 to effectively reflect light.
  • the barrier film cannot completely block water and oxygen, especially the quantum dots in the edge regions on both sides Particles will fail when used for a long time, poorly cut, high temperature, high humidity, or water and oxygen.
  • a blue edge will be formed in the edge areas on both sides, causing color difference on the LCD panel screen, poor picture display, and LED lights.
  • the addition of a quantum vacuum tube to the strip structure is not conducive to the design of the narrow frame of the backlight module, and there is no technical problem that a matching reflector can effectively reflect light.
  • the present invention provides a diffusion plate, a manufacturing method thereof, a backlight module, and a display device, which can solve the high cost of barrier film in the quantum dot particle layer of the backlight module in the prior art, and the barrier film cannot completely block water and oxygen.
  • quantum dot particles in the edge areas on both sides will fail when used for a long time, poorly cut, high temperature, high humidity, or water and oxygen.
  • a blue edge will be formed in the edge areas on both sides, causing chromatic aberration in the LCD panel screen.
  • Poor display and the addition of quantum dot particle vacuum tubes to the LED light bar structure are not conducive to the design of the narrow frame of the backlight module, and there is no technical problem that a matching reflector can effectively reflect light.
  • the present application provides a diffuser plate, which comprises a transparent shell, the transparent shell is provided with a containing cavity, and the containing cavity is filled with quantum dot particles.
  • the transparent casing is integrally formed, wherein the containing cavity is located inside the transparent casing.
  • the transparent housing is assembled and molded, wherein the transparent housing includes a first substrate and a second substrate disposed opposite to the first substrate, and the accommodating cavity is located in the Between the first substrate and the second substrate.
  • an opening area is provided on one side or both sides of the transparent housing, the opening area is provided with a sealing member, and the sealing member includes a sealant.
  • the cross-sectional shape of the accommodating cavity includes one or more of rectangular, parallelogram, rhombus, triangle, polygon, or irregular planar figures.
  • a method for manufacturing a diffuser plate includes:
  • a transparent shell is made, and the transparent shell is provided with a containing cavity.
  • An opening area is provided on one side or both sides of the transparent casing, and a sealing member is provided in the opening area.
  • the quantum dot particle solution is flushed into the containing cavity through the opening area, or quantum dot particles are coated on the inner surface of the containing cavity.
  • a vacuum machine is used to vacuumize the containing cavity, and a sealing member is used to close the opening area.
  • the sealing member includes sealant.
  • the step of filling the accommodating cavity with quantum dot particles, using a vacuum machine to vacuumize the accommodating cavity, and sealing the opening area with a sealing member specifically includes:
  • the quantum dot particles in the containing cavity are dried by using the vacuum machine to reduce the water vapor concentration in the containing cavity to a preset value.
  • a vacuum machine is used to remove the air in the accommodating cavity, and a sealing member is used to close the opening area.
  • a backlight module which includes:
  • the back plate includes a bottom plate and a side plate, and the bottom plate and the side plate form an accommodating cavity.
  • the reflective sheet is located above the bottom plate and is used to reflect the light leaked from the containing cavity and back.
  • the light source is arranged above the reflective sheet.
  • the diffuser plate is located above the light source and is used to diffuse the incident light emitted by the light source.
  • the diffuser plate includes a transparent shell, and the transparent shell is provided with a containing cavity, and the containing cavity is filled with quantum dot particles.
  • the optical film material is located above the diffuser plate, and is used for condensing the astigmatic light emitted by the diffuser plate to be emitted within a preset range, and improving the brightness of the backlight module.
  • Plastic frames are arranged on both sides of the back plate.
  • the containing cavity is located inside the transparent casing.
  • the transparent housing is assembled and molded, wherein the transparent housing includes a first substrate and a second substrate disposed opposite to the first substrate, and the accommodating cavity is located in the Between the first substrate and the second substrate.
  • an opening area is provided on one side or both sides of the transparent housing, the opening area is provided with a sealing member, and the sealing member includes a sealant.
  • the cross-sectional shape of the accommodating cavity includes one or more of rectangular, parallelogram, rhombus, triangle, polygon, or irregular planar figures.
  • the containing cavity is one or more layers.
  • a display device which includes a backlight module, a display panel on the surface of the backlight module, and a driving circuit for driving the display of the display panel, the backlight module include:
  • the back plate includes a bottom plate and a side plate, and the bottom plate and the side plate form an accommodating cavity.
  • a reflective sheet located above the bottom plate, used to reflect the light leaked from the containing cavity back;
  • the light source is arranged above the reflective sheet.
  • the diffuser plate is located above the light source and is used to diffuse the incident light emitted by the light source.
  • the diffuser plate includes a transparent shell, and the transparent shell is provided with a containing cavity, and the containing cavity is filled with quantum dot particles.
  • the optical film material is located above the diffuser plate, and is used for condensing the astigmatic light emitted by the diffuser plate to be emitted within a preset range, and improving the brightness of the backlight module.
  • Plastic frames are arranged on both sides of the back plate.
  • the containing cavity is located inside the transparent casing.
  • the transparent housing is assembled and molded, wherein the transparent housing includes a first substrate and a second substrate disposed opposite to the first substrate, and the accommodating cavity is located in the Between the first substrate and the second substrate.
  • an opening area is provided on one side or both sides of the transparent housing, the opening area is provided with a sealing member, and the sealing member includes a sealant.
  • the cross-sectional shape of the accommodating cavity includes one or more of rectangular, parallelogram, rhombus, triangle, polygon, or irregular planar figures.
  • the containing cavity is one or more layers.
  • the present application provides a diffuser plate and a manufacturing method thereof, a backlight module, and a display device.
  • the transparent housing is preferably a hollow glass substrate, and the quantum dot particle layer is combined with the diffuser plate, eliminating the upper and lower layers of conventional quantum dot particles.
  • the cost of installing barrier films on both sides the glass substrate is provided with a containing cavity, the containing cavity includes one or more layers of enclosed cavity, quantum dot particles are filled in the enclosed cavity, and a vacuum machine is used to dry and pump the containing cavity.
  • Vacuum processing while sealing the opening area of the glass substrate with a sealing member, to ensure that the quantum dot particles in the containing cavity are in a vacuum environment, and the transparent shell effectively prevents water and oxygen from invading the quantum dot particles and avoids the edges on both sides of the diffusion plate
  • a blue edge phenomenon is formed in the area to realize the high color gamut display of the backlight module.
  • a plurality of LED light bar structures are arranged under the front projection of the quantum dot particle layer on the backplane to avoid the addition of quantum dot particle vacuum tubes in the light source, which is beneficial to the backlight module Set of narrow border designs.
  • Figure 1a is a schematic diagram of the structure of a backlight module in the prior art
  • Figure 1b is a schematic diagram of the structure of a quantum dot particle layer in the prior art
  • Figure 1c is a schematic diagram of the LED light bar structure in the prior art
  • FIG. 2a is a schematic diagram of a structure of a diffuser provided by an embodiment of the application.
  • FIG. 2b is a schematic diagram of another diffuser structure provided by an embodiment of the application.
  • 2c is a schematic diagram of another diffuser structure provided by an embodiment of the application.
  • FIG. 2d is a schematic diagram of another diffuser structure according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of a manufacturing process of a diffuser plate provided by an embodiment of the application.
  • FIG. 4 is a schematic structural diagram of a backlight module provided by an embodiment of the application.
  • the present invention aims at the high cost of the barrier film in the quantum dot particle layer of the backlight module in the prior art, and the barrier film cannot completely block water and oxygen, especially the quantum dot particles in the edge regions on both sides are used for a long time and are poorly cut.
  • the barrier film cannot completely block water and oxygen, especially the quantum dot particles in the edge regions on both sides are used for a long time and are poorly cut.
  • it will fail, and a blue edge will be formed in the edge area on both sides, which will cause color difference and poor display of the LCD panel screen, and the addition of quantum vacuum tubes to the LED light bar structure is not conducive to backlighting
  • the design of the narrow frame of the module does not have the technical problem of effective reflection of light by the matching reflective sheet. This embodiment can solve this defect.
  • the diffuser plate includes a transparent shell.
  • the transparent shell is provided with an accommodating cavity.
  • the accommodating cavity is filled with quantum dot particles.
  • the light from the light source is refracted by the quantum dot particles, so that the incident point light source is converted into a surface light source and fully scattered. , To achieve a softer and more uniform light source.
  • an embodiment of the present application provides a schematic structural diagram of a diffuser plate.
  • the diffuser plate 201 is integrally formed; the diffuser plate 201 includes a transparent casing 2011.
  • the surface and the bottom surface of the transparent casing 2011 are respectively provided with a light exit surface 20111 and an entrance surface.
  • the light surface 20112, the light exit surface 20111 and the light entrance surface 20112 are arranged oppositely, and are all flat or concave-convex surfaces.
  • the transparent housing 2011 is provided with a first accommodating cavity 2012.
  • the cross-sectional shape of the first accommodating cavity 2012 includes a rectangle, a parallelogram, and a rhombus. One or more of, triangles, polygons or irregular plane graphics.
  • the first accommodating cavity 2012 is filled with quantum dot particles 20121; the quantum dot particles 20121 are uniformly distributed in the first accommodating cavity 2012, and the light enters the diffuser 201 from the light entrance surface 20112, and then is refracted by the quantum dot particles 20121, and finally from the light exit surface 20111 projected.
  • the material of the transparent housing 2011 is preferably glass.
  • An open area 20113 is provided on one side of the transparent housing 2011.
  • the open area 20113 is used to fill the entrance of the quantum dot particles 20121 on the one hand, and on the other hand for the vacuum machine An interface for vacuuming the first containing chamber 2012.
  • the opening area 20113 passes through the first containing cavity 2012, and the quantum dot particles 20121 enter from the opening area 20113 and are transported at a preset position in the containing cavity 2012.
  • opening areas can also be provided on both sides of the transparent casing 2011, or other There are no restrictions on the shape, location and number of opening areas.
  • the surface of the opening area 20113 is provided with a sealing member 2013, the surface of the sealing member 2013 is provided with a sealing flange, and the sealing flange seals around the opening area 20113.
  • the surface of the sealing member 2013 in contact with the transparent housing 2011 can be set to be a flat or uneven surface,
  • the material of the sealing member 2013 is preferably a high-strength sealant; the sealing member 2013 can be used to prevent foreign objects from entering the first accommodating cavity 2012.
  • the foreign objects include liquid, gas or solid particles, and mainly prevent water and oxygen.
  • the transparent housing 2011 can also be provided with opening areas at both ends or elsewhere, and the opening area is provided with a sealing member to block water and oxygen; the transparent housing 2011 can also be a transparent plastic, and light can be unobstructed from the transparent Through plastic, transparent plastic has a certain strength and can play a certain supporting role for supporting the optical film material above the diffuser.
  • the transparent housing 2011 is preferably a hollow glass substrate, and there is no need to provide barrier films on the upper and lower sides of the quantum dot particle layer, which reduces the cost of the quantum dot particle layer diaphragm in the diffuser.
  • the glass substrate is provided with a containing cavity, which includes One or more layers of enclosed cavity, the quantum dot particles are filled in the enclosed cavity, the cavity is dried and evacuated using a vacuum machine, and the opening area of the glass substrate is sealed with a sealing member to ensure the quantum dot particles in the cavity Being in a vacuum environment, it effectively isolates water and oxygen at the same time, avoids the formation of a blue edge in the edge areas on both sides of the diffuser, and improves the efficiency of light refracting by the quantum dot particles in the edge areas on both sides of the diffuser.
  • the embodiment of the present application provides another diffuser structure; the diffuser 202 is integrally formed; the diffuser 202 includes a transparent casing 2021, and the surface and the bottom surface of the transparent casing 2021 are respectively provided with a light exit surface 20111 and an entrance surface.
  • the light surface 20122, the light emitting surface 20211 and the light incident surface 20122 are arranged opposite to each other, and both are flat or concave-convex surfaces.
  • the transparent housing 2021 is provided with a second accommodating cavity 2022 and a third accommodating cavity 2023, a second accommodating cavity 2022 and a third accommodating cavity
  • the cavity 2023 is respectively filled with quantum dot particles 20221 and quantum dot particles 20231; quantum dot particles 20221 and quantum dot particles 20231 are uniformly distributed in the second accommodating cavity 2022 and the third accommodating cavity 2023, respectively, and the light enters the diffuser from the light incident surface 20122
  • the plate 202 is then refracted by the quantum dot particles 20221 and the quantum dot particles 20231, and finally emitted from the light exit surface 20111.
  • the material of the transparent housing 2021 is preferably glass.
  • An opening area 20113 is provided on one side of the transparent housing 2021.
  • the opening area 20213 is used to fill the entrances of the quantum dot particles 20221 and the quantum dot particles 20231. Interface for vacuuming the second containing cavity 2022 and the third containing cavity 2023 by the vacuum machine.
  • the opening area 20213 penetrates the second accommodating cavity 2022 and the third accommodating cavity 2023, and the quantum dot particles enter from the opening area 20113 and are transported in the preset positions of the second accommodating cavity 2022 and the third accommodating cavity 2023.
  • opening areas can also be provided on both sides of the transparent housing 2021, or opening areas can be provided in other places.
  • the shape, position and number of the opening areas are not limited, and the transparent housing 2021 can also be provided with multiple accommodating cavities.
  • a sealing member 2024 is provided on the surface of the opening area 20113.
  • the sealing member 2024 has a structure similar to the sealing member 2013 in FIG. 2a and is used to prevent foreign matter from entering the first accommodating cavity 2012.
  • the foreign matter includes liquid, gas or solid particles, and mainly prevents water and oxygen.
  • the transparent housing 2021 can also be provided with opening areas at both ends or elsewhere.
  • the opening areas are provided with a sealing member 2024, which is used to block water and oxygen;
  • the transparent housing 2021 can also be made of transparent plastic, and light can be used. It can pass through transparent plastic without hindrance.
  • the transparent plastic has a certain strength and can play a certain supporting role for supporting the optical film above the diffuser.
  • the embodiment of the present application provides yet another diffuser structure; the diffuser 203 is integrally formed; the diffuser 203 includes a transparent casing 2031, and the surface and the bottom surface of the transparent casing 2031 are respectively provided with a light exit surface 20311 and an entrance surface.
  • the light surface 20312, the light emitting surface 20311 and the light incident surface 20312 are arranged opposite to each other and are all flat or concave-convex surfaces.
  • the transparent housing 2031 is provided with a fourth accommodating cavity 2032, a fifth accommodating cavity 2033, and a sixth accommodating cavity 2034.
  • the cavity 2032, the fifth accommodating cavity 2033, and the sixth accommodating cavity 2034 are located on the same layer, or may be located on different layers.
  • a first barrier film 20323 is provided between the fourth accommodating cavity 2032 and the fifth accommodating cavity 2033.
  • the first barrier film 20323 is provided with a first through hole 20324.
  • the first through hole 20324 is used to communicate the fourth accommodating cavity 2032 and the fifth accommodating cavity.
  • a second barrier film 20334 is provided between the fifth accommodating cavity 2033 and the sixth accommodating cavity 2034, the second barrier film 20334 is provided with a second through hole 20335, and the second through hole 20335 is used to communicate the fifth accommodating cavity 2033 and the sixth accommodating cavity
  • the cavity 2034, the accommodating cavity in the embodiment of the present application is not limited to three accommodating cavities, and multiple cavities can also be provided.
  • the fourth accommodating cavity 2032, the fifth accommodating cavity 2033 and the sixth accommodating cavity 2034 are respectively filled with quantum dot particles 20321, quantum dot particles 20331 and quantum dot particles 20341; light enters the diffuser 203 from the light incident surface 20312, and then passes through the quantum dot particles The point particles are refracted and finally emitted from the light emitting surface 20311.
  • the material of the transparent housing 2031 in this embodiment is preferably glass.
  • An opening area 20313 is provided on one side of the transparent housing 2031.
  • the opening area 20113 penetrates the sixth containing cavity 2034. Quantum dot particles enter from the open area 20313 and are transported to the fourth The accommodation cavity 2032, the fifth accommodation cavity 2033 and the sixth accommodation cavity 2034 have preset positions.
  • a sealing member 2035 is provided on the surface of the opening area 20313.
  • the sealing member 2035 is similar in structure to the sealing member 2013 in Figure 2a, and is used to prevent foreign objects from entering the fourth accommodating cavity 2032, the fifth accommodating cavity 2033, and the sixth accommodating cavity 2034.
  • the foreign objects include liquid. , Gas or solid particles, mainly to prevent water and oxygen.
  • the transparent housing 2031 can also be provided with opening areas at both ends or elsewhere, and the opening areas are provided with sealing members to block water and oxygen; the transparent housing 2031 can also be transparent plastic, and light can be transparent without obstruction.
  • the transparent housing 2031 can also be provided with multiple accommodating cavities.
  • the diffuser 204 includes a transparent housing 2041.
  • the transparent housing 2041 is provided with a seventh accommodating cavity 2042.
  • the cross-sectional shape of the seventh accommodating cavity 2042 includes rectangular and parallel shapes. One or more of quadrilaterals, rhombuses, triangles, polygons or irregular plane figures.
  • the transparent housing 2041 is assembled and formed.
  • the structure of the transparent housing 2041 is similar to that of the transparent housing 2011 in FIG. 2a.
  • the transparent housing 2041 includes a first substrate 20411 and a second substrate disposed opposite to the first substrate 20411 20412, the seventh receiving cavity 2042 is located between the first substrate 20411 and the second substrate 20412.
  • the seventh accommodating cavity 2042 is provided with quantum dot particles 20421, one side of the transparent casing 2041 is provided with an opening area 20415, and the opening area 20415 is provided with a sealing member 2043.
  • the surface and the bottom surface of the transparent casing 2041 are respectively provided with a light exit surface 20413 and a light entrance surface 20414.
  • the transparent housing 2041 can also be provided with openings at both ends or elsewhere, and the opening areas are provided with sealing members to block water and oxygen; the transparent housing 2041 can also be transparent plastic, and light can be unobstructed. Through transparent plastic, the transparent plastic has a certain strength and can play a certain supporting role for supporting the optical film above the diffuser.
  • the transparent housing 2041 can also be provided with multiple accommodating cavities.
  • a method for manufacturing a diffuser plate including:
  • An opening area is provided on one side or both sides of the transparent casing, and a sealing member is provided in the opening area;
  • S303 Flush a quantum dot particle solution into the containing cavity through the opening area, or coat quantum dot particles on the inner surface of the containing cavity;
  • the sealing member includes sealant.
  • the step of filling the accommodating cavity with quantum dot particles, using a vacuum machine to vacuumize the accommodating cavity, and sealing the opening area with a sealing member specifically includes:
  • the quantum dot particles in the containing cavity are dried by using the vacuum machine to reduce the water vapor concentration in the containing cavity to a preset value.
  • a vacuum machine is used to remove the air in the accommodating cavity, and a sealing member is used to close the opening area.
  • a backlight module 400 as shown in FIG. 4, including:
  • the back plate 406 includes a bottom plate 4061 and a side plate 4062.
  • the bottom plate 4061 and the side plate 4062 form an eighth receiving cavity 407.
  • the side plate 4062 includes a first side plate 40621 and a second side plate 40622.
  • the reflective sheet 405 is located above the bottom plate 4061, and is used to reflect the light leaked from the eighth receiving cavity 407 and back.
  • the light source 404 is arranged above the reflective sheet 405.
  • the light source 404 includes a plurality of light bars 4041 and LED lamps fixed on the light bar 4041.
  • the width of the LED light bar structure 4041 is the same to avoid adding quantum dot particle vacuum tubes, which is beneficial to the backlight module Narrow bezel design.
  • the diffuser plate 403 is located above the light source 404.
  • the diffuser plate 403 includes a transparent housing 4032, a ninth accommodating cavity 4031 arranged in the transparent housing 4032, and quantum dot particles 4033 arranged in the ninth accommodating cavity 4031 for the diffuser 403
  • the incident point light source is converted into a surface light source, and the light source is sufficiently scattered to realize a softer and more uniform light source.
  • the optical film 402 is located above the diffuser plate 403, and is used for condensing the scattered light emitted by the diffuser plate 403 to emit out within a preset range and enhance the brightness of the backlight module 400; the optical film 402 usually includes a prism sheet and a brightness enhancement film;
  • the prism sheet is a light-gathering device, which uses the laws of total reflection and refraction to concentrate scattered light in a certain angle range and emit it, thereby increasing the brightness in the emitting range and the brightness of the backlight module 400.
  • the plastic frame 401 is arranged on both sides of the back plate 406.
  • the plastic frame 401 includes a first front frame 4011, a second front frame 4012, a first middle frame 4013, and a second middle frame 4014.
  • the first middle frame 4013 includes a first A retaining wall and a first supporting plate perpendicular to the first retaining wall;
  • the second middle frame 4014 includes a second retaining wall and a second supporting plate perpendicular to the second retaining wall; the first retaining wall and the second retaining wall
  • the inner side of the wall is attached to the outer surfaces of the first side plate 40621 and the second side plate 40622 respectively.
  • the first support plate and the second support plate support the display panel placed on the backlight module 400; the first front frame 4011 and the second The front frame 4012 is attached to the surfaces of the first middle frame 4013 and the second middle frame 4014 respectively, and is used to protect the backlight module 400 from the intrusion of liquid, gas or solid particles.
  • the present invention also provides a display device including the above-mentioned backlight module; the display device further includes a display panel and a corresponding drive circuit, wherein the display panel is placed on the first support plate and the second support plate of the middle frame of the backlight module Above, the driving circuit is arranged on both sides of the display panel or the non-display area of the display panel, and is used to drive the source driving and gate driving in the display panel, and transmit data signals to the display panel to drive the display panel for display.
  • the transparent shell is preferably a hollow glass substrate, which combines the quantum dot particle layer with the diffusion plate, which saves the cost of arranging barrier films on the upper and lower sides of the conventional quantum dot particle layer.
  • the glass substrate is provided with a containing cavity. It includes one or more layers of enclosed cavity, quantum dot particles are filled in the enclosed cavity, and the cavity is dried and evacuated using a vacuum machine.
  • a sealing member is used to seal the opening area of the glass substrate to ensure the accommodation
  • the quantum dot particles in the cavity are in a vacuum environment, and the transparent shell effectively prevents water and oxygen from entering the quantum dot particles, avoiding the formation of a blue edge on the edge areas of the diffuser plate, realizing the high color gamut display of the backlight module and reducing the backlight
  • the production cost of the module is that multiple LED light bar structures are arranged on the quantum dot particle layer under the orthographic projection of the backplane to avoid adding quantum dot particle vacuum tubes in the light source, which is beneficial to the design of the narrow frame of the backlight module.

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

一种扩散板（201），包括透明壳体（2011），透明壳体（2011）设置有容纳腔（2012），容纳腔（2012）内填充量子点粒子（20121）；量子点粒子（20121）填充在封闭容纳腔（2012）内，确保了容纳腔（2012）中量子点粒子（20121）处于真空环境，有效地阻隔水和氧气入侵到量子点粒子（20121）上，避免扩散板（201）两侧边缘区形成一条蓝边现象，实现背光模组（400）高色域显示，降低背光模组（400）的生产成本。

Description

扩散板及其制造方法、背光模组、显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种扩散板及其制造方法、背光模组、显示装置。
 背景技术
量子点的背光源技术可以使液晶显示面板实现110%标准色域，远高于传统液晶显示面板的90%~100%标准色域，得到了广泛的应用。
如图1a所示，常规的量子点背光模组包括胶框101、光学膜材102、量子点粒子层103、扩散板104、光源105、反射片106、以及背板107，其中，胶框101包括右侧前框1011、左侧前框1012、右侧中框1013、以及左侧中框1014，量子点粒子层103位于扩散板104上方；如图1b所示，量子点粒子层103包括第一阻隔膜1031、第二阻隔膜1033，以及夹于第一阻隔膜1031和第二阻隔膜1033之间的量子点粒子层1032，第一阻隔膜1031和第二阻隔膜1033制作成本高；量子点粒子层1032中量子点粒子10321抗湿气和抗高温能力差，第一阻隔膜1031和第二阻隔膜1033、以及背光模组两侧边缘区不能完全阻隔水氧，长时间使用、裁切不良、高温、高湿或者水氧的情况下，两侧边缘区的量子点粒子会失效，造成两侧边缘区不能通过蓝光激发出红绿光，直接透过蓝光，形成一条蓝边，边缘区会直接造成液晶显示面板画面显示不良，造成屏幕产生色差，四边泛滥的现象，直接影响液晶显示装置的显示品质。如图1c所示，现有技术中光源105中发光二极管(Light Emitting Diode,简称LED)采用了量子管技术，即在LED灯条结构1051前段加上一条涂布了量子点真空管1052，需要预设量子点真空管1042的组装空间，不利于背光模组的窄边框外观的设计，且没有配合的反射片106对光线进行有效的反射。
因此，需要设计出一种新的结构，以解决现有技术中背光模组中量子点粒子层中阻隔膜的成本较高，且阻隔膜不能完全的阻隔水氧，尤其两侧边缘区量子点粒子在长时间使用、裁切不良、高温、高湿或者水氧的情况下会产生失效，两侧边缘区会形成一条蓝边，造成液晶显示面板屏幕产生色差，画面显示不良，以及在LED灯条结构上增设量子真空管，不利于背光模组的窄边框的设计，且没有配合的反射片对光线进行有效的反射的技术问题。
 技术问题
本发明提供一种扩散板及其制造方法、背光模组、显示装置，能够解决现有技术中背光模组中量子点粒子层中阻隔膜的成本高，且阻隔膜不能完全的阻隔水氧，尤其两侧边缘区量子点粒子在长时间使用、裁切不良、高温、高湿或者水氧的情况下会产生失效，两侧边缘区会形成一条蓝边，造成液晶显示面板屏幕产生色差，画面显示不良，以及在LED灯条结构上增设量子点粒子真空管，不利于背光模组的窄边框的设计，且没有配合的反射片对光线进行有效的反射的技术问题。
 技术解决方案
为解决上述问题，本发明提供的技术方案如下：
本申请提供一种扩散板，其中，包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子。
根据本发明一优选实施例，所述透明壳体为一体成型，其中，所述容纳腔位于所述透明壳体的内部。
根据本发明一优选实施例，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
根据本发明一优选实施例，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
根据本发明一优选实施例，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
依据上述扩散板，提供一种扩散板制造方法，所述方法包括：
制作透明壳体，所述透明壳体设置容纳腔。
所述透明壳体的一侧或者两侧设置开口区，所述开口区设置密封构件。
通过开口区向所述容纳腔冲入量子点粒子溶液，或在所述容纳腔内表面涂布量子点粒子。
所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区。
根据本发明一优选实施例，所述密封构件包括密封胶。
根据本发明一优选实施例，所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区的步骤具体包括：
真空机与所述开口区对接后，使用真空机干燥所述容纳腔中量子点粒子，使所述容纳腔中水蒸气浓度降到预设值。
待所述容纳腔干燥完成后，使用真空机排除所述容纳腔中空气，同时使用密封构件封闭所述开口区。
依据本发明的上述目的，还提供一种背光模组，其中，包括：
背板，包括底板和侧板，所述底板和所述侧板形成容纳腔。
反射片，位于所述底板上方，用于把从所述容纳腔中泄漏出来光再反射回去。光源，设置在反射片上方。
扩散板，位于所述光源上方，用于使所述光源发出的入射光散射，所述扩散板包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子。
光学膜材，位于所述扩散板上方，用于将所述扩散板射出发散光聚集在预设范围内出射，并提升所述背光模组的亮度。
胶框，设置在所述背板两侧。
根据本发明一优选实施例，所述容纳腔位于所述透明壳体的内部。
根据本发明一优选实施例，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
根据本发明一优选实施例，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
根据本发明一优选实施例，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
根据本发明一优选实施例，所述容纳腔为一层或多层。
依据本发明的上述目的，还提供一种显示装置，其中，包括背光模组、位于所述背光模组表面的显示面板、以及用于驱动所述显示面板显示的驱动电路，所述背光模组包括：
背板，包括底板和侧板，所述底板和所述侧板形成容纳腔。
反射片，位于所述底板上方，用于把从所述容纳腔中泄漏出来光再反射回去；
光源，设置在反射片上方。
扩散板，位于所述光源上方，用于使所述光源发出的入射光散射，所述扩散板包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子。
光学膜材，位于所述扩散板上方，用于将所述扩散板射出发散光聚集在预设范围内出射，并提升所述背光模组的亮度。
胶框，设置在所述背板两侧。
根据本发明一优选实施例，所述容纳腔位于所述透明壳体的内部。
根据本发明一优选实施例，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
根据本发明一优选实施例，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
根据本发明一优选实施例，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
根据本发明一优选实施例，所述容纳腔为一层或多层。
 有益效果
本申请提供一种扩散板及其制造方法、背光模组、显示装置，本申请中透明壳体优选为中空玻璃基板，将量子点粒子层与扩散板结合，省去了常规量子点粒子层上下两侧设置阻隔膜的成本，玻璃基板设置有容纳腔，所述容纳腔包括一层或多层封闭腔体，量子点粒子填充在封闭腔体内，使用真空机对所述容纳腔进行干燥和抽真空处理，同时使用密封构件封闭所述玻璃基板的开口区，确保了容纳腔中量子点粒子处于真空环境，透明壳体有效地阻隔水和氧气入侵到量子点粒子上，避免扩散板两侧边缘区形成一条蓝边现象，实现背光模组的高色域的显示，在量子点粒子层在背板正投影下设置多个LED灯条结构，避免光源中增设量子点粒子真空管，有利于背光模组的窄边框的设计。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1a为现有技术中背光模组结构示意图；
图1b为现有技术中量子点粒子层结构示意图；
图1c为现有技术中LED灯条结构示意图；
图2a为本申请实施例提供一种扩散板结构示意图；
图2b为本申请实施例提供另一种扩散板结构示意图；
图2c为本申请实施例提供又一种扩散板结构示意图；
图2d为本申请实施例提供再一种扩散板结构示意图；
图3为本申请实施例提供一种扩散板制造流程示意图；
图4为本申请实施例提供一种背光模组结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有技术中背光模组中量子点粒子层中阻隔膜的成本较高，且阻隔膜不能完全的阻隔水氧，尤其两侧边缘区量子点粒子在长时间使用、裁切不良、高温、高湿或者水氧的情况下会产生失效，两侧边缘区会形成一条蓝边，造成液晶显示面板屏幕产生色差，画面显示不良，以及在LED灯条结构上增设量子真空管，不利于背光模组的窄边框的设计，且没有配合的反射片对光线进行有效的反射的技术问题，本实施例能够解决该缺陷。
本发明中扩散板包括透明壳体，透明壳体设置有容纳腔，容纳腔内填充量子点粒子，从光源出来的光经过量子点粒子的折射，使入射的点光源转化为面光源，充分散射，实现光源更柔和、更均匀。
如图2a所示，本申请实施例提供一种扩散板结构示意图，扩散板201为一体成型；扩散板201包括透明壳体2011，透明壳体2011的表面和底面分别设置有出光面20111和入光面20112，出光面20111和入光面20112相对设置，均为平面或者凹凸面，透明壳体2011内设置有第一容纳腔2012，第一容纳腔2012的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。第一容纳腔2012内填充量子点粒子20121；量子点粒子20121均匀分布在第一容纳腔2012中，光从入光面20112进入到扩散板201，然后经过量子点粒子20121折射，最后从出光面20111射出。
本实施例中透明壳体2011的材料优选为玻璃，透明壳体2011一侧设置有开口区20113，开口区20113一方面用于填充完量子点粒子20121的入口，另一方面用于真空机对第一容纳腔2012抽真空的接口。开口区20113与第一容纳腔2012贯通，量子点粒子20121从开口区20113进入，输送在容纳腔2012预设位置，根据实际需要，还可以在透明壳体2011两侧均设置开口区，或者其他地方设置开口区，开口区的形状、位置和数量不做限定。
开口区20113表面设置有密封构件2013，密封构件2013表面设置有密封凸缘，密封凸缘围绕开口区20113密封，密封构件2013与透明壳体2011接触的表面可设置为平面或者凸凹不平的面，密封构件2013的材料优选为高强度的密封胶；密封构件2013可以用于防止异物进入第一容纳腔2012，异物包括液体、气体或固体颗粒，主要防止水和氧气。
本实施例中透明壳体2011还可以两端或其他地方设置开口区，开口区设置有密封构件，用于阻隔水氧；透明壳体2011还可以为透明的塑料，光线可以无阻碍从透明的塑料中透过，其中，透明塑料具有一定的强度，可以起到一定的支撑作用，用于支承扩散板上方的光学膜材。
本实施例中透明壳体2011优选为中空玻璃基板，无需量子点粒子层上下两侧设置阻隔膜，降低了扩散板中量子点粒子层膜片的成本，玻璃基板设置有容纳腔，容纳腔包括一层或多层封闭腔体，量子点粒子填充在封闭腔体内，使用真空机对容纳腔进行干燥和抽真空处理，同时使用密封构件封闭玻璃基板的开口区，确保了容纳腔中量子点粒子处于真空环境，同时有效地隔绝水和氧气，避免扩散板两侧边缘区形成一条蓝边现象，提高了扩散板两侧边缘区量子点粒子的折射光线的效率。
如图2b所示，本申请实施例提供另一种扩散板结构；扩散板202为一体成型；扩散板202包括透明壳体2021，透明壳体2021的表面和底面分别设置有出光面20211和入光面20212，出光面20211和入光面20212相对设置，均为平面或者凹凸面，透明壳体2021内设置有第二容纳腔2022和第三容纳腔2023，第二容纳腔2022和第三容纳腔2023内分别填充量子点粒子20221和量子点粒子20231；量子点粒子20221和量子点粒子20231分别均匀分布在第二容纳腔2022和第三容纳腔2023内，光从入光面20212进入到扩散板202，然后经过量子点粒子20221和量子点粒子20231折射，最后从出光面20211射出。
本实施例中透明壳体2021的材料优选为玻璃，透明壳体2021一侧设置有开口区20213，开口区20213一方面用于填充完量子点粒子20221和量子点粒子20231的入口，另一方面用于真空机对第二容纳腔2022和第三容纳腔2023内进行抽真空的接口。开口区20213与第二容纳腔2022和第三容纳腔2023贯通，量子点粒子从开口区20213进入，输送在第二容纳腔2022和第三容纳腔2023预设位置。根据实际需要，还可以在透明壳体2021两侧均设置开口区，或者其他地方设置开口区，开口区的形状、位置和数量不做限定，同时透明壳体2021还可以设置多层容纳腔。
开口区20213表面设置有密封构件2024，密封构件2024与图2a中密封构件2013的结构类似，用于防止异物进入第一容纳腔2012，异物包括液体、气体或固体颗粒，主要防止水和氧气。
本实施例中透明壳体2021还可以两端或者其他地方设置开口区，开口区均设置有密封构件2024，密封构件2024用于阻隔水氧；透明壳体2021还可以为透明的塑料，光线可以无阻碍从透明的塑料中透过，其中，透明塑料具有一定的强度，可以起到一定的支撑作用，用于支承扩散板上方的光学膜材。
如图2c所示，本申请实施例提供又一种扩散板结构；扩散板203为一体成型；扩散板203包括透明壳体2031，透明壳体2031的表面和底面分别设置有出光面20311和入光面20312，出光面20311和入光面20312相对设置，均为平面或凹凸面，透明壳体2031内设置有第四容纳腔2032、第五容纳腔2033和第六容纳腔2034，第四容纳腔2032、第五容纳腔2033和第六容纳腔2034位于同一层，也可以位于不同层。第四容纳腔2032和第五容纳腔2033之间设置第一阻隔膜20323，第一阻隔膜20323设置有第一通孔20324，第一通孔20324用于连通第四容纳腔2032和第五容纳腔2033。第五容纳腔2033和第六容纳腔2034之间设置第二阻隔膜20334，第二阻隔膜20334设置有第二通孔20335，第二通孔20335用于连通第五容纳腔2033和第六容纳腔2034，本申请实施例中容纳腔并不仅仅限于3个容纳腔，还可以设置多个。
第四容纳腔2032、第五容纳腔2033和第六容纳腔2034内分别填充量子点粒子20321、量子点粒子20331和量子点粒子20341；光从入光面20312进入到扩散板203，然后经过量子点粒子折射，最后从出光面20311射出。
本实施例中透明壳体2031的材料优选为玻璃，透明壳体2031一侧设置有开口区20313，开口区20213与第六容纳腔2034贯通，量子点粒子从开口区20313进入，输送到第四容纳腔2032、第五容纳腔2033和第六容纳腔2034预设位置。
开口区20313表面设置有密封构件2035，密封构件2035与图2a中密封构件2013的结构类似，用于防止异物进入第四容纳腔2032、第五容纳腔2033和第六容纳腔2034，异物包括液体、气体或固体颗粒，主要防止水和氧气。
本实施例中透明壳体2031还可以两端或其他地方设置开口区，开口区均设置有密封构件，用于阻隔水氧；透明壳体2031还可以为透明的塑料，光线可以无阻碍从透明的塑料中透过，透明壳体2031还可以设置多层容纳腔。
如图2d所示，本申请实施例提供再一种扩散板结构，扩散板204包括透明壳体2041，透明壳体2041设置有第七容纳腔2042，第七容纳腔2042截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。本实施例中透明壳体2041为组装成型，透明壳体2041与图2a中透明壳体2011的结构类似，透明壳体2041包括第一基板20411、以及与第一基板20411相对设置的第二基板20412，第七容纳腔2042位于第一基板20411和第二基板20412之间。第七容纳腔2042内设置有量子点粒子20421，透明壳体2041一侧设置有开口区20415，开口区20415设置有密封构件2043。透明壳体2041的表面和底面分别设置有出光面20413和入光面20414。
本实施例中该透明壳体2041还可以两端设或者其他地方设置开口区，开口区均设置有密封构件，用于阻隔水氧；透明壳体2041还可以为透明的塑料，光线可以无阻碍从透明的塑料中透过，其中，透明塑料具有一定的强度，可以起到一定的支撑作用，用于支承扩散板上方的光学膜材，透明壳体2041还可以设置多层容纳腔。
依据上述扩散板，提供一种扩散板制造方法，如图3所示，包括：
S301：制作透明壳体，所述透明壳体设置容纳腔；
S302：所述透明壳体的一侧或者两侧设置开口区，所述开口区设置密封构件；
S303：通过开口区向所述容纳腔冲入量子点粒子溶液，或在所述容纳腔内表面涂布量子点粒子；
S304：所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区。
优选地，所述密封构件包括密封胶。
优选地，所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区的步骤具体包括：
真空机与所述开口区对接后，使用真空机干燥所述容纳腔中量子点粒子，使所述容纳腔中水蒸气浓度降到预设值。
待所述容纳腔干燥完成后，使用真空机排除所述容纳腔中空气，同时使用密封构件封闭所述开口区。
依据本发明的上述目的，提供一种背光模组400，如图4所示，包括：
背板406，包括底板4061和侧板4062，底板4061和侧板4062形成第八容纳腔407，其中，侧板4062包括第一侧板40621和第二侧板40622。
反射片405，位于底板4061上方，用于把从第八容纳腔407中泄漏出来光再反射回去。
光源404，设置在反射片405上方，光源404包括多个灯条4041和固定在灯条4041上的LED灯，LED灯条结构4041宽度相同，避免增设量子点粒子真空管，有利于背光模组的窄边框的设计。
上述扩散板403，位于光源404上方，扩散板403包括透明壳体4032，设于透明壳体4032内第九容纳腔4031，以及设于第九容纳腔4031内量子点粒子4033，扩散板403用于使光源404发出的入射光经过多次折射、反射、以及散射，使入射的点光源转化为面光源，充分散射，实现光源更柔和、更均匀。
光学膜材402，位于扩散板403上方，用于将扩散板403射出发散光聚集在预设范围内出射，并提升背光模组400的亮度；光学膜片402通常包括棱镜片和增亮膜；棱镜片是聚光装置，利用全反射和折射定律，将分散的光集中于一定的角度范围内出射从而提高该出射范围内的亮度，提高背光模组400的亮度。
胶框401，设置在背板406两侧，胶框401包括第一前框4011、第二前框4012、第一中框4013、以及第二中框4014，其中，第一中框4013包括第一挡墙，以及垂直于第一挡墙的第一支撑板；第二中框4014包括第二挡墙，以及由垂直于第二挡墙的第二支撑板；第一挡墙和第二挡墙的内侧分别贴合第一侧板40621和第二侧板40622的外表面，第一支撑板和第二支撑板支承放在背光模组400上的显示面板；第一前框4011和第二前框4012分别贴合第一中框4013和第二中框4014表面，用于保护背光模组400，防止液体、气体或固体颗粒入侵。
本发明还提供一种显示装置，包括上述背光模组；所述显示装置还包括显示面板和相应的驱动电路，其中，显示面板放置在背光模组中框的第一支撑板和第二支撑板上，驱动电路设置在显示面板两侧或者显示面板的非显示区，用于驱动显示面板中源极驱动和栅极驱动，传输数据信号到显示面板上，以驱动显示面板进行显示。
本发明中透明壳体优选为中空玻璃基板，将量子点粒子层与扩散板结合，省去了常规量子点粒子层上下两侧设置阻隔膜的成本，玻璃基板设置有容纳腔，所述容纳腔包括一层或多层封闭腔体，量子点粒子填充在封闭腔体内，使用真空机对所述容纳腔进行干燥和抽真空处理，同时使用密封构件封闭所述玻璃基板的开口区，确保了容纳腔中量子点粒子处于真空环境，透明壳体有效地阻隔水和氧气入侵到量子点粒子上，避免扩散板两侧边缘区形成一条蓝边现象，实现背光模组高色域的显示，降低背光模组的生产成本，在量子点粒子层在背板正投影下设置多个LED灯条结构，避免光源中增设量子点粒子真空管，有利于背光模组窄边框的设计。
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. 一种扩散板，其中，包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子。
  2. 根据权利要求1所述的扩散板，其中，所述透明壳体为一体成型，其中，所述容纳腔位于所述透明壳体的内部。
  3. 根据权利要求1所述的扩散板，其中，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
  4. 根据权利要求1所述的扩散板，其中，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
  5. 根据权利要求1所述的扩散板，其中，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
  6. 一种扩散板制造方法，其中，所述方法包括：
    制作透明壳体，所述透明壳体设置容纳腔；
    所述透明壳体的一侧或者两侧设置开口区，所述开口区设置密封构件；
    通过开口区向所述容纳腔冲入量子点粒子溶液，或在所述容纳腔内表面涂布量子点粒子；
    所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区。
  7. 根据权利要求6所述的方法，其中，所述密封构件包括密封胶。
  8. 根据权利要求6所述的方法，其中，所述容纳腔填充完量子点粒子，使用真空机对所述容纳腔进行抽真空处理，并使用密封构件封闭所述开口区的步骤具体包括：
    真空机与所述开口区对接后，使用真空机干燥所述容纳腔中量子点粒子，使所述容纳腔中水蒸气浓度降到预设值；
    待所述容纳腔干燥完成后，使用真空机排除所述容纳腔中空气，同时使用密封构件封闭所述开口区。
  9. 一种背光模组，其中，包括：
    背板，包括底板和侧板，所述底板和所述侧板形成容纳腔；
    反射片，位于所述底板上方，用于把从所述容纳腔中泄漏出来光再反射回去；
    光源，设置在反射片上方；
    扩散板，位于所述光源上方，用于使所述光源发出的入射光散射，所述扩散板包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子；
    光学膜材，位于所述扩散板上方，用于将所述扩散板射出发散光聚集在预设范围内出射，并提升所述背光模组的亮度；
    胶框，设置在所述背板两侧。
  10. 根据权利要求9所述的背光模组，其中，所述容纳腔位于所述透明壳体的内部。
  11. 根据权利要求9所述的背光模组，其中，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
  12. 根据权利要求9所述的背光模组，其中，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
  13. 根据权利要求9所述的背光模组，其中，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
  14. 根据权利要求9所述的背光模组，其中，所述容纳腔为一层或多层。
  15. 一种显示装置，其中，包括背光模组、位于所述背光模组表面的显示面板、以及用于驱动所述显示面板显示的驱动电路，所述背光模组包括：
    背板，包括底板和侧板，所述底板和所述侧板形成容纳腔；
    反射片，位于所述底板上方，用于把从所述容纳腔中泄漏出来光再反射回去；
    光源，设置在反射片上方；
    扩散板，位于所述光源上方，用于使所述光源发出的入射光散射，所述扩散板包括透明壳体，所述透明壳体设置有容纳腔，所述容纳腔内填充量子点粒子；
    光学膜材，位于所述扩散板上方，用于将所述扩散板射出发散光聚集在预设范围内出射，并提升所述背光模组的亮度；
    胶框，设置在所述背板两侧。
  16. 根据权利要求15所述的显示装置，其中，所述容纳腔位于所述透明壳体的内部。
  17. 根据权利要求15所述的显示装置，其中，所述透明壳体为组装成型，其中，所述透明壳体包括第一基板、以及与所述第一基板相对设置的第二基板，所述容纳腔位于所述第一基板和所述第二基板之间。
  18. 根据权利要求15所述的显示装置，其中，透明壳体一侧或者两侧设置有开口区，所述开口区设置有密封构件，所述密封构件包括密封胶。
  19. 根据权利要求15所述的显示装置，其中，所述容纳腔的截面形状包括矩形、平行四边形、菱形、三角形、多边形或者不规则的平面图形中一种或多种。
  20. 根据权利要求15所述的显示装置，其中，所述容纳腔为一层或多层。
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