WO2023159686A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2023159686A1
WO2023159686A1 PCT/CN2022/080567 CN2022080567W WO2023159686A1 WO 2023159686 A1 WO2023159686 A1 WO 2023159686A1 CN 2022080567 W CN2022080567 W CN 2022080567W WO 2023159686 A1 WO2023159686 A1 WO 2023159686A1
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WO
WIPO (PCT)
Prior art keywords
light source
light
light guide
groove
backlight module
Prior art date
Application number
PCT/CN2022/080567
Other languages
English (en)
French (fr)
Inventor
唐丽媛
Original Assignee
惠州华星光电显示有限公司
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 惠州华星光电显示有限公司 filed Critical 惠州华星光电显示有限公司
Priority to US17/754,248 priority Critical patent/US20240053636A1/en
Publication of WO2023159686A1 publication Critical patent/WO2023159686A1/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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means

Definitions

  • the present application relates to the field of display technology, in particular to a backlight module and a display device.
  • Mini-Light-Emitting Diode In Mini-Light-Emitting Diode (Mini-LED) displays, a large number of dense methods are usually used to achieve dimming in a smaller area, so good brightness uniformity can still be achieved under the premise of a small light mixing distance The color of the screen is bright and the contrast is higher. With high color gamut configuration, the effect can be compared with Organic Light-Emitting Diode (OLED). At the same time, because of the existence of a large number of densely distributed light sources, it is easier to achieve than conventional LED displays. Higher brightness requirements; At present, in view of the many advantages of Mini-LED display, it has obvious advantages in the application of ultra-thin, high color rendering and power saving, and has been widely concerned by major manufacturers.
  • OLED Organic Light-Emitting Diode
  • the large-size Mini-LED backlight Modules are mostly implemented by splicing light panels, and there will inevitably be splicing gaps between the light panels. Since the splicing of the light panels is also the splicing of the reflectors, and there are gaps in the splicing places, reflectors cannot be installed, resulting in The light at the seam cannot be reflected, resulting in the loss of light energy at the seam, which affects the display effect and local dimming; 2.
  • Mini-LED small light mixing distance brings a strong advantage in ultra-thin applications, but also The introduction of traditional support columns will cast serious bracket shadows on the diffusion plate, which will affect the display of the screen; 3. A large number of densely distributed LED lights can improve light efficiency, but it also brings problems such as high cost and difficulty in heat dissipation; 4. Large size When assembling the Mini-LED backlight module spliced with light panels, due to the large number of light panels, installation deviations are prone to occur, which affects efficiency.
  • Embodiments of the present invention provide a backlight module and a display device, which can alleviate the problem of light energy loss between two adjacent light source substrates, and ensure the uniformity of brightness of the display panel.
  • the embodiment of the present application provides a backlight module, including:
  • the back plate is provided with several protrusions, and grooves are formed between adjacent protrusions;
  • the light source substrate is arranged on the backplane and covers the protrusion
  • a light guide plate the light guide plate is arranged in the groove, and guides each light in the groove toward a side away from the back plate.
  • the light source substrate includes a first light source module covering the protrusion, and a second light source module located on the inner wall of the groove;
  • the first light source module includes a plurality of first light emitting units arranged at intervals
  • the second light source module includes a plurality of second light emitting units arranged at intervals.
  • the light guide plate guides the light emitted by each of the second light emitting units in the groove to a side away from the back plate.
  • the light guide plate includes a light guide part and a dot structure
  • the light guide part is at least partly located in the groove, and the orthographic projection of the light guide part on the back plate is located on the protrusion; the dot structure is located between the light guide part and the between the backplanes, and the dot structure is set corresponding to the second light source module.
  • the light guide part includes a light guide part main body located in the groove, and a side of the light guide part main body away from the groove and arranged on the branches of the light guide part on two adjacent protrusions;
  • the orthographic projection of the main body of the light guide on the back plate is located in the groove, and the orthographic projection of the branch of the light guide on the back plate covers the groove.
  • the main body of the light guide part is spaced apart from the second light source module, and the branches of the light guide part are connected to the first light source module and the second light source.
  • the modules are arranged at intervals, and the orthographic projection of the branch of the light guide part on the backplane covers two adjacent second light source modules.
  • the dot structure includes a first dot located between the main body of the light guide part and the groove, and a dot located between the branch of the light guide part and the second dot.
  • the second dot between the light source modules;
  • the first dots are set between two adjacent second light source modules and corresponding to the two second light source modules, and the second dots are set at the distance between the second light source modules and the backplane one side and corresponding to the second light source module.
  • the backlight module further includes an optical film located on the side of the light guide plate away from the groove, and the optical film is perpendicular to the backlight module. an orthographic projection in a direction overlays the backplane;
  • the side of the optical film close to the light guide plate is parallel to the side of the light guide plate close to the optical film.
  • the thickness of the light guide plate is greater than the sum of the thicknesses of the back plate and the light source substrate, and the optical film is spaced apart from the light source substrate.
  • the distance between the optical film and the light source substrate is 0.1 mm to 0.3 mm.
  • the height of the protrusion ranges from 0.3 cm to 1 cm, and the width of the groove ranges from 2 cm to 4 cm.
  • An embodiment of the present application provides a display device, the display device includes a display panel and a backlight module, and the backlight module includes:
  • the back plate is provided with several protrusions, and grooves are formed between adjacent protrusions;
  • the light source substrate is arranged on the backplane and covers the protrusion
  • a light guide plate the light guide plate is arranged in the groove, and guides each light in the groove toward a side away from the back plate.
  • the light source substrate includes a first light source module covering the protrusion, and a second light source module located on the inner wall of the groove;
  • the first light source module includes a plurality of first light emitting units arranged at intervals, and the second light source module includes a plurality of second light emitting units arranged at intervals;
  • the light guide plate guides the light emitted by each of the second light emitting units in the groove to a side away from the back plate.
  • the light guide plate includes a light guide part and a dot structure
  • the light guide part is at least partly located in the groove, and the orthographic projection of the light guide part on the back plate is located on the protrusion; the dot structure is located between the light guide part and the between the backplanes, and the dot structure is set corresponding to the second light source module.
  • the light guide part includes a light guide part main body located in the groove, and a side of the light guide part main body away from the groove and arranged on a the branches of the light guide part adjacent to the two protrusions;
  • the orthographic projection of the main body of the light guide on the back plate is located in the groove, and the orthographic projection of the branch of the light guide on the back plate covers the groove.
  • the main body of the light guide part is spaced apart from the second light source module, and the branches of the light guide part are connected to the first light source module and the second light source module.
  • the groups are arranged at intervals, and the orthographic projection of the branches of the light guide part on the backplane covers two adjacent second light source modules.
  • the dot structure includes a first dot located between the main body of the light guide part and the groove, and a dot located between the branch of the light guide part and the second light source.
  • the second outlet between the modules where,
  • the first dots are set between two adjacent second light source modules and corresponding to the two second light source modules, and the second dots are set at the distance between the second light source modules and the backplane one side and corresponding to the second light source module.
  • the backlight module further includes an optical film located on the side of the light guide plate away from the groove, and the optical film is perpendicular to the direction of the backlight module. an orthographic projection on the overlay of the backplane;
  • the side of the optical film close to the light guide plate is parallel to the side of the light guide plate close to the optical film.
  • the thickness of the light guide plate is greater than the sum of the thicknesses of the back plate and the light source substrate, and the optical film is spaced apart from the light source substrate.
  • the distance between the optical film and the light source substrate is 0.1 mm to 0.3 mm.
  • the height of the protrusion ranges from 0.3 cm to 1 cm, and the width of the groove ranges from 2 cm to 4 cm.
  • the embodiment of the present application provides a backlight module and a display device.
  • the backplane of the backlight module and the light source substrate are provided with several protrusions on the backplane, and grooves are formed between adjacent protrusions;
  • the light source substrate is arranged on the back plate and covers the protrusion; wherein, in the embodiment of the present application, a light guide plate is arranged in the groove to direct the light rays in the groove away from the back plate
  • One side is exported, thereby effectively alleviating the problem of light energy loss between two adjacent light source substrates, and ensuring the brightness uniformity of the display panel.
  • FIG. 1 is a three-dimensional schematic diagram of an existing backlight module
  • FIG. 2 is a three-dimensional schematic diagram of a backlight module provided by an embodiment of the present application.
  • FIG. 3 is a schematic cross-sectional view of a backlight module provided by an embodiment of the present application.
  • FIG. 4 is an optical path diagram in the backlight module provided by the embodiment of the present application.
  • FIG. 5 is a schematic perspective view of a display device provided by an embodiment of the present application.
  • the present application provides a backlight module and a display device.
  • a backlight module and a display device.
  • the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
  • Embodiments of the present application provide a backlight module and a display device. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments.
  • the embodiment of the present application provides a backlight module and a display device
  • the backlight module 20 includes:
  • the back plate 21 is provided with a plurality of protrusions 211, and grooves 212 are formed between adjacent protrusions 211;
  • the light source substrate 22 is arranged on the back plate 21 and covers the protrusion 211;
  • a light guide plate the light guide plate is arranged in the groove, and guides each light in the groove toward a side away from the back plate.
  • the backlight module 20 includes a backplane 21 and at least two light source substrates 22 arranged on the backplane 21.
  • the light source substrate 22 includes a circuit board 221 (Printed Circuit Board, PLB) stacked on the backplane 21, a reflector (not shown in the figure) and a light source module 222, and the light source substrate 22 is a mini
  • the light source module 222 is a miniature light emitting diode.
  • the large-sized Mini-LED backlight module 20 is mostly realized by splicing, that is, in the prior art, two partitions are installed on the backplane 21.
  • the light source substrate 22 is provided to realize a large-sized backlight module 20; however, since a splicing gap 30 will inevitably be generated between two adjacent light source substrates 22, it is impossible to set the splicing gap 30 at the splicing gap 30
  • the reflection sheet (not shown in the figure), wherein, the function of the reflection sheet is to reflect the light emitted by the light source module 222 into light perpendicular to the direction of the backlight module 20, so in the existing backlight module In the group 20, the light emitted by the light source module 222 to the splicing gap 30 cannot be reflected, resulting in the loss of light energy at the splicing gap 30, thereby affecting the display effect and local dimming.
  • a plurality of protrusions 211 are provided on the side of the back plate 21 corresponding to the light source substrate 22, and grooves 212 are located between adjacent protrusions 211, and the light source substrate 22 is arranged on the back plate 21 and covers the protrusion 211; wherein, the backlight module 20 also includes a light guide plate 23 located in the groove 212, and the light guide plate 23 connects the groove Each light in 212 is exported toward the side away from the back plate 21, thereby effectively alleviating the problem of light energy loss between two adjacent light source substrates 22, thereby ensuring the brightness uniformity of the display device.
  • FIG. 2 is a three-dimensional schematic diagram of a backlight module provided by an embodiment of the present application.
  • the backlight module 20 includes a backplane 21 and at least two light source substrates 22 disposed on the backplane 21, and two adjacent light source substrates 22 are arranged along the first direction X or the second direction X.
  • Y is arranged side by side, the first direction X and the second direction Y form a predetermined angle, the first direction in this embodiment is the X direction, and the second direction is the Y direction; in this embodiment, the The range of the predetermined angle, and the directions of the first direction and the second direction are not limited, but for the convenience of description, in this embodiment, the preset included angle is 90°, and the first direction Take the X direction as an example, and the second direction is the Y direction as an example; specifically, in this embodiment, the backlight module 20 includes two light source substrates 22 arranged on the backplane 21, and two adjacent The above-mentioned light source substrates 22 are arranged side by side along the first direction X as an example to illustrate the technical solution of the present application.
  • the back plate 21 includes several protrusions 211 corresponding to the light source substrate 22 and grooves 212 between adjacent protrusions 211.
  • the back plate The board 21 includes two protrusions 211 corresponding to the light source substrate 22 and a groove 212 between two adjacent protrusions 211 as an example to illustrate the technical solution of the present application.
  • the light source substrate 22 covers the protrusion 211, specifically, the light source substrate 22 includes a first light source module 2221 located on the protrusion 211 and a second light source module located on the inner wall of the groove 212. Group 2222; It should be noted that, in this embodiment, the end surface of the side of the protrusion 211 is coplanar with the surface where the inner wall of the groove 212 is located, and the height of the protrusion 211 ranges from 0.3 cm to 1 cm, the width range of the groove 212 is 2 cm to 4 cm, wherein, the height of the protrusion 211 and the width of the groove 212 can be selected according to the actual process conditions, and this embodiment does not Specific restrictions are made; at the same time, in this embodiment, if there is no special description, the light source substrate 22 is taken as an example for illustration.
  • the light source substrate 22 includes a circuit board 221 (Printed Circuit Board, PCB) fixed on the backplane 21, and the circuit board 221 includes a between the first part (not marked in the figure), and the second part (not marked in the figure) between the inner wall of the groove 212 and the second light source module 2222, the first light source module 2221 and the second light source module 2222 both include a plurality of mini light emitting diodes (not marked in the figure), the upper surface of the circuit board 221 is provided with a circuit board 221 pad, and the circuit board 221 pad is connected to the chip at the bottom of the mini light emitting diode The pads are matched, and the mini LEDs are installed on the circuit board 221 through chip pads, pad welding of the circuit board 221 or eutectic method.
  • PCB Print Circuit Board
  • the backlight The module 20 usually adopts the method of laying multiple pieces of the light source substrate 22 on the entire backplane 21, which is not conducive to the alignment of the light source substrate 22 and the backplane 21.
  • the light source substrate 22 is set corresponding to one of the protrusions 211, which can better position the bonding position of the light source substrate 22 and the back plate 21, and at the same time, set the groove 212 between each of the protrusions 211,
  • the placement space can be reserved for the second light source module 2222 located on the inner wall of the groove 212, thereby simplifying the manufacturing process of the backlight module 20; and, by using the backlight module in the prior art
  • the group 20 is set as the first light source module 2221 located on the protrusion 211 and the second light source module 2222 located on the inner wall of the groove 212, which reduces the number of mini LEDs to a certain extent, thereby improving the The heat dissipation capability of the backlight substrate improves the service life of the backlight module 20 .
  • the backlight module 20 further includes a light guide plate 23 located on the back plate 21 and corresponding to the groove 212, and the light guide plate 23 is used to guide each of the grooves 212
  • the light emitted by the second light source module 2222 exits from the side of the light guide plate 23 away from the back plate 21; 212 is provided with a light guide plate 23, and the light guide plate 23 is used to transmit the light emitted by each of the second light source modules 2222 in the groove 212 from the side of the light guide plate 23 away from the back plate 21.
  • the problem of light energy loss between two adjacent light source substrates 22 is effectively alleviated, thereby ensuring the brightness uniformity of the display device.
  • Figure 3 is a schematic cross-sectional view of the backlight module provided by the embodiment of the present application
  • Figure 4 is a diagram of the light path in the backlight module provided by the embodiment of the present application.
  • the light guide plate 23 includes a light guide part 231 and a dot structure 232; wherein, the light guide part 231 is at least partly located in the groove 212, and the light guide part 231 is on the back
  • the orthographic projection on the board 21 is located on the protrusion 211; the dot structure 232 is located between the light guide part 231 and the back plate 21, and the dot structure 232 corresponds to the second light source module 2222 set up.
  • the light guide part 231 includes a light guide part main body 2311 located in the groove 212, and a side of the light guide part main body 2311 away from the groove 212 and disposed on two adjacent The light guide branch 2312 on the protrusion 211; wherein, the orthographic projection of the light guide branch 2312 on the back plate 21 covers the second light source module 2222; specifically, the light guide body 2311
  • the first light source module 2221 and the second light source module 2222 are spaced apart, and the light guide branch 2312 is spaced apart from the first light source module 2221 and the second light source module 2222 .
  • the network dot structure 232 includes a first network dot 2321 located between the light guide body 2311 and the groove 212, and a second network dot 2321 located between the light guide branch 2312 and the second light source module 2222.
  • Two network points 2322 wherein, the first network point 2321 is located between two adjacent second light source modules 2222 and is set corresponding to the two second light source modules 2222, and the second network point 2322 is located at the second
  • the light source module 2222 is arranged on the side away from the back plate 21 and corresponding to the second light source module 2222; specifically, the dot structure 232 includes a plurality of the first dots 2321 and a plurality of the second dots 2322, a plurality of the first network dots 2321 are arrayed in the groove 212 and located in the orthographic projection of the light guide body 2311 on the groove 212, and the plurality of the second network dots 2322 correspond to the The above-mentioned second light source module 2222 is set.
  • the light emitted by the second light source module 2222 is transmitted in the light guide part 231 , when the light meets the second light source set in the light guide part 231 Scattering is formed after the dots 2322, and part of the light scattered by the second dots 2322 exits from the upper surface of the light guide part 231, that is, the side of the light guide part 231 away from the back plate 21, and a part of the light is emitted at
  • the light guide part 231 continues to transmit until it hits the second dot 2322 again and scatters again, and then exits from the side of the light guide part 231 away from the back plate 21, thereby effectively relieving
  • the problem of light energy loss between the light source substrates 22 it should be noted that in FIG. Light is scattered.
  • the first light source module 2221 includes a plurality of first light emitting units 22211 arranged at intervals near the groove 212
  • the second light source module 2222 includes a plurality of first light emitting units 22211 arranged at intervals near the protrusion 211 .
  • a second light-emitting unit 22221 one of the first light-emitting units 22211 is set corresponding to one of the second light-emitting units 22221; wherein, in one of the first light-emitting units 22211 and one of the corresponding second light-emitting units 22221, the The second dot 2322 corresponds to the light-emitting side of the first light-emitting unit 22211 and is set corresponding to the light-emitting side of the second light-emitting unit 22221;
  • the quantity of the second light emitting unit 22221 is not specifically limited.
  • a first light emitting unit 22211 is set corresponding to a second light emitting unit 22221, and a first light emitting unit 22211 is set in a second light emitting unit 22221 corresponding to it.
  • the second dot 2322 corresponds to the light-emitting side of the first light-emitting unit 22211 and is set corresponding to the light-emitting side of the second light-emitting unit 22221, so that the light emitted by the first light-emitting unit 22211 and the second
  • the light emitted by the light emitting unit 22221 can be mixed more uniformly, so as to achieve the purpose of uniform light emission at the junction of the protrusion 211 and the groove 212 in the backlight module 20 .
  • the backlight module 20 also includes an optical film 24 located on the side of the light guide plate 23 away from the groove 212 , and the positive direction of the optical film 24 in the direction perpendicular to the backlight module 20 is The projection covers the back plate 21 ; wherein, the side of the optical film 24 close to the light guide plate 23 is parallel to the side of the light guide plate 23 close to the optical film 24 .
  • the optical film 24 is located on the side of the light guide branch 2312 away from the back plate 21, and the side of the optical film 24 close to the light guide branch 2312 is connected to the light guide branch 2312.
  • 2312 is parallel to the side close to the optical film 24, wherein the thickness of the light guide body 2311 is 0.3 cm to 1 cm, and the thickness of the light guide branch 2312 is 0.2 cm to 0.5 cm, wherein the The thickness of the main body 2311 of the light guide part and the thickness of the branch part 2312 of the light guide part can be selected according to the actual process conditions, which is not specifically limited in this embodiment.
  • the existing backlight module 20 also includes an optical film 24 located on the backlight module 20, and an optical film 24 located between the optical film 24 and the backlight module 20.
  • the support column 25 between them, the projection of the support column 25 on the backlight module 20 is located on the light source substrate 22, however, it should be noted that, in the prior art, the support column 25 is located between the optical film 24 and the backlight module 20, so the light emitted by the light source module 222 will be partially blocked by the support column 25 to produce shadows, seriously affecting the optical uniformity and the The visual effect of the backlight module; in this embodiment, by setting the optical film 24 on the side of the light guide part branch 2312 away from the back plate 21, the light guide part 231 is used to replace the prior art
  • the support column 25 further avoids the occurrence of bad line phenomena such as shadows that may be caused by the support column 25 in the prior art; at the same time, by arranging the side of the optical film 24 close to the light guide part branch 2312 and The side of the light guide
  • the thickness of the light guide plate 23 is greater than the sum of the thicknesses of the back plate 21 and the light source substrate 22, and the optical film 24 is spaced apart from the light source substrate 22; specifically Specifically, the sum of the thicknesses of the light guide main body 2311 and the light guide branch 2312 is greater than the sum of the thicknesses of the back plate 21 and the light source substrate 22, so that the light guide branch 2312 is far away from the
  • the optical film 24 on one side of the back plate 21 can be spaced apart from the light source substrate 22, and the range of the distance is 0.1 mm to 0.3 mm; it can be understood that, in this embodiment, by setting the optical film 24 It is arranged at a distance from the light source substrate 22, and the distance ranges from 0.1 mm to 0.3 mm, so as to prevent the optical film 24 from being too close to the light source substrate 22 and reduce the overall brightness of the backlight module 20 .
  • FIG. 5 is a three-dimensional schematic diagram of a display device provided by an embodiment of the present application.
  • This embodiment provides a display device, which includes a display panel 10 and the backlight module 20 described in any one of the above embodiments.
  • the display panel 10 includes a display area 100 and a non-display area (not shown in the figure) adjacent to the display area 100 , and the backlight module 20 is located in the backlight of the display panel 10 side and corresponding to the display area 100.
  • the display panel 10 includes but is not limited to a liquid crystal display (Liquid Crystal Display, LCD). for example.
  • LCD Liquid Crystal Display
  • backlight module 20 has been described in detail in the above-mentioned embodiments, and the description will not be repeated here.
  • the display device may be a display screen of a smart phone, a tablet computer, a notebook computer, a smart bracelet, a smart watch, smart glasses, a smart helmet, a desktop computer, a smart TV, or a digital camera, or even a Applied to electronic devices with flexible displays.
  • the application provides a backlight module and a display device, the backlight module backplane and the light source substrate, the backplane is provided with several protrusions, grooves are formed between the adjacent protrusions; the light source substrate It is arranged on the back plate and covers the protrusion; wherein, in the embodiment of the present application, a light guide plate is arranged in the groove, so that each light in the groove is directed to a side far away from the back plate. The side leads out, thereby effectively alleviating the problem of light energy loss between two adjacent light source substrates, and ensuring the brightness uniformity of the display panel.

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Abstract

一种背光模组（20）及显示装置，背光模组（20）包括背板（21）和光源基板（22）；其中，背板（21）上设有若干凸起（211），相邻凸起（211）之间形成凹槽（212）；光源基板（22）设置于背板（21）上并覆盖于凸起（211）；通过在凹槽（212）内设置一导光板（23），将凹槽（212）内的各光线朝向远离背板（21）的一侧导出，从而有效的缓解相邻两光源基板（22）之间的光能损耗的问题，保证显示面板（10）的亮度均匀性。

Description

背光模组及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种背光模组及显示装置。
 背景技术
微型发光二极管（Mini-Light-Emitting Diode，Mini-LED）显示中，通常采用大量密布的方式实现更小区域范围内的调光，因此在小混光距离的前提下依然可以实现良好的亮度均匀性，画面色彩鲜艳具有更高的对比度，搭配高色域配置效果可以媲美有机发光二极管（Organic Light-Emitting Diode，OLED），同时，因为大量密布的光源的存在相较于常规LED显示更容易达到更高的亮度要求；目前，鉴于Mini-LED显示存在诸多优点，使其在超薄、高显色性和省电等方面的应用具有明显的优势，已经受到了各大厂商广泛的关注。
然而，在现有的Mini-LED背光模组的应用中，仍然存在许多需要克服的困难，例如：一、由于目前工艺技术上的巨量转移等技术难点尚未攻克，大尺寸的Mini-LED背光模组多采用拼接灯板的方式来实现，灯板之间不可避免地会产生拼接缝隙，由于灯板拼接处也正好是反射片的拼接处，而拼接处存在缝隙无法设置反射片，从而导致拼缝处的光无法反射，造成拼缝处的光能缺失，进而影响显示效果和区域调光；二、Mini-LED的小混光距离带来了超薄应用上的强大优势的同时，也引入了传统支撑柱会在扩散板上投射严重的支架暗影问题，影响画面显示；三、大量密布的LED灯可以提高光效，但是也带来了成本高昂、散热困难等问题；四、大尺寸灯板拼接的Mini-LED背光模组在组装时，因为灯板数量较多，容易出现安装偏差，影响效率。
 技术问题
本发明实施例提供一种背光模组及显示装置，可以缓解相邻两光源基板之间的光能损耗的问题，保证显示面板的亮度均匀性。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种背光模组，包括：
背板，所述背板设有若干凸起，相邻所述凸起之间形成凹槽；
光源基板，所述光源基板设置于所述背板上并覆盖于所述凸起；
导光板，所述导光板设置于所述凹槽内，将所述凹槽内的各光线朝向远离所述背板的一侧导出。
在本申请实施例所提供的背光模组中，所述光源基板包括覆盖所述凸起的第一光源模组、及位于所述凹槽内壁上的第二光源模组；
所述第一光源模组包括间隔设置的多个第一发光单元，所述第二光源模组包括间隔设置的多个第二发光单元。
其中，所述导光板将所述凹槽内的各所述第二发光单元发出的光向远离所述背板的一侧导出。
在本申请实施例所提供的背光模组中，所述导光板包括导光部和网点结构；
其中，所述导光部至少部分位于所述凹槽内，且所述导光部在所述背板上的正投影位于所述凸起上；所述网点结构位于所述导光部和所述背板之间，且所述网点结构对应所述第二光源模组设置。
在本申请实施例所提供的背光模组中，所述导光部包括位于所述凹槽内的导光部主体、及位于所述导光部主体远离所述凹槽的一侧且设置于相邻两所述凸起上的导光部支部；
其中，所述导光部主体在所述背板上的正投影位于所述凹槽内，所述导光部支部在所述背板上的正投影覆盖所述凹槽。
在本申请实施例所提供的背光模组中，所述导光部主体与所述第二光源模组间隔设置，所述导光部支部与所述第一光源模组和所述第二光源模组均间隔设置，且所述导光部支部在所述背板上的正投影覆盖相邻两所述第二光源模组。
在本申请实施例所提供的背光模组中，所述网点结构包括位于所述导光部主体和所述凹槽之间的第一网点、及位于所述导光部支部和所述第二光源模组之间的第二网点；其中，
所述第一网点设置于相邻两所述第二光源模组之间且对应两所述第二光源模组设置，所述第二网点设置于所述第二光源模组远离所述背板的一侧且对应所述第二光源模组设置。
在本申请实施例所提供的背光模组中，所述背光模组还包括位于所述导光板远离所述凹槽一侧的光学膜片，所述光学膜片在垂直于所述背光模组方向上的正投影覆盖所述背板；
其中，所述光学膜片靠近所述导光板的一面与所述导光板靠近所述光学膜片的一面平行。
在本申请实施例所提供的背光模组中，所述导光板的厚度大于所述背板和所述光源基板的厚度之和，且所述光学膜片与所述光源基板间隔设置。
在本申请实施例所提供的背光模组中，所述光学膜片与所述光源基板的间距为0.1毫米~0.3毫米。
在本申请实施例所提供的背光模组中，所述凸起的高度范围为0.3厘米~1厘米，所述凹槽的宽度范围为2厘米~4厘米。
本申请实施例提供一种显示装置，所述显示装置包括显示面板和一背光模组，所述背光模组包括：
背板，所述背板设有若干凸起，相邻所述凸起之间形成凹槽；
光源基板，所述光源基板设置于所述背板上并覆盖于所述凸起；
导光板，所述导光板设置于所述凹槽内，将所述凹槽内的各光线朝向远离所述背板的一侧导出。
在本申请实施例所提供的显示装置中，所述光源基板包括覆盖所述凸起的第一光源模组、及位于所述凹槽内壁上的第二光源模组；
所述第一光源模组包括间隔设置的多个第一发光单元，所述第二光源模组包括间隔设置的多个第二发光单元；
其中，所述导光板将所述凹槽内的各所述第二发光单元发出的光向远离所述背板的一侧导出。
在本申请实施例所提供的显示装置中，所述导光板包括导光部和网点结构；
其中，所述导光部至少部分位于所述凹槽内，且所述导光部在所述背板上的正投影位于所述凸起上；所述网点结构位于所述导光部和所述背板之间，且所述网点结构对应所述第二光源模组设置。
在本申请实施例所提供的显示装置中，所述导光部包括位于所述凹槽内的导光部主体、及位于所述导光部主体远离所述凹槽的一侧且设置于相邻两所述凸起上的导光部支部；
其中，所述导光部主体在所述背板上的正投影位于所述凹槽内，所述导光部支部在所述背板上的正投影覆盖所述凹槽。
在本申请实施例所提供的显示装置中，所述导光部主体与所述第二光源模组间隔设置，所述导光部支部与所述第一光源模组和所述第二光源模组均间隔设置，且所述导光部支部在所述背板上的正投影覆盖相邻两所述第二光源模组。
在本申请实施例所提供的显示装置中，所述网点结构包括位于所述导光部主体和所述凹槽之间的第一网点、及位于所述导光部支部和所述第二光源模组之间的第二网点；其中，
所述第一网点设置于相邻两所述第二光源模组之间且对应两所述第二光源模组设置，所述第二网点设置于所述第二光源模组远离所述背板的一侧且对应所述第二光源模组设置。
在本申请实施例所提供的显示装置中，所述背光模组还包括位于所述导光板远离所述凹槽一侧的光学膜片，所述光学膜片在垂直于所述背光模组方向上的正投影覆盖所述背板；
其中，所述光学膜片靠近所述导光板的一面与所述导光板靠近所述光学膜片的一面平行。
在本申请实施例所提供的显示装置中，所述导光板的厚度大于所述背板和所述光源基板的厚度之和，且所述光学膜片与所述光源基板间隔设置。
在本申请实施例所提供的显示装置中，所述光学膜片与所述光源基板的间距为0.1毫米~0.3毫米。
在本申请实施例所提供的显示装置中，所述凸起的高度范围为0.3厘米~1厘米，所述凹槽的宽度范围为2厘米~4厘米。
 有益效果
本申请实施例提供一种背光模组及显示装置，所述背光模组背板和光源基板，所述背板上设有若干凸起，相邻所述凸起之间形成凹槽；所述光源基板设置于所述背板上并覆盖于所述凸起；其中，本申请实施例通过在所述凹槽内设置一导光板，将所述凹槽内的各光线朝向远离所述背板的一侧导出，从而有效的缓解相邻两光源基板之间的光能损耗的问题，保证显示面板的亮度均匀性。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，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1为现有背光模组的立体示意图；
图2为本申请实施例所提供的背光模组的立体示意图；
图3为本申请实施例所提供的背光模组的截面示意图；
图4为本申请实施例所提供背光模组中的光路图；
图5为本申请实施例所提供显示装置的立体示意图。
 本发明的实施方式
本申请提供一种背光模组及显示装置，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种背光模组及显示装置。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
请参阅图2~图4，本申请实施例提供一种背光模组及显示装置，所述背光模组20包括：
背板21，所述背板21设有若干凸起211，相邻所述凸起211之间形成凹槽212；
光源基板22，所述光源基板22设置于所述背板21上并覆盖于所述凸起211；
导光板，所述导光板设置于所述凹槽内，将所述凹槽内的各光线朝向远离所述背板的一侧导出。
可以理解的是，目前微型发光二极管（Mini-Light-Emitting Diode，Mini-LED）显示中，通常采用大量密布的方式实现更小区域范围内的调光，因此在小混光距离的前提下依然可以实现良好的亮度均匀性，画面色彩鲜艳具有更高的对比度，已经受到了各大厂商广泛的关注，然而，在现有的Mini-LED背光模组20的应用中，仍然存在许多需要克服的困难，如图1所示，为现有背光模组的立体示意图，在现有技术中，所述背光模组20包括背板21、及至少两设置于所述背板21上的光源基板22，所述光源基板22包括层叠设置于所述背板21上的电路板221（Printed Circuit Board，PLB）、反射片（图中未画出）以及光源模组222，所述光源基板22为迷你发光二极管灯板，所述光源模组222为迷你发光二极管。
由于目前工艺技术上的巨量转移等技术难点尚未攻克，大尺寸的Mini-LED背光模组20多采用拼接的方式来实现，即，现有技术中通过在所述背板21上安装两间隔设置的所述光源基板22，从而实现大尺寸的背光模组20；然而，由于相邻两所述光源基板22之间不可避免地会产生拼接缝隙30，而在所述拼接缝隙30处无法设置所述反射片（图中未画出），其中，所述反射片的作用是将所述光源模组222发出的光反射成垂直所述背光模组20方向的光，因此在现有背光模组20中，所述光源模组222发射到所述拼接缝隙30处的光无法被反射，从而导致所述拼接缝隙30处的光能缺失，进而影响显示效果和区域调光。
承上，本申请实施例通过在所述背板21包括对应所述光源基板22的一侧设置若干凸起211、及位于相邻所述凸起211之间的凹槽212，所述光源基板22设置于所述背板21上并覆盖于所述凸起211；其中，所述背光模组20还包括位于所述凹槽212内的导光板23，所述导光板23将所述凹槽212内的各光线朝向远离所述背板21的一侧导出，从而有效的缓解相邻两所述光源基板22之间光能损耗的问题，进而保证所述显示装置的亮度均匀性。
在一实施例中，请参阅图2，为本申请实施例所提供的背光模组的立体示意图。
在本实施例中，所述背光模组20包括背板21、及至少两设置于所述背板21上的光源基板22，相邻两所述光源基板22沿第一方向X或第二方向Y并列设置，所述第一方向X与所述第二方向Y呈一预定角度，本实施例所述第一方向为X方向，所述第二方向为Y方向；在本实施例中，对所述预定角度的范围、及所述第一方向和所述第二方向的方向均不做限制，但为了方便描述，本实施例以所述预设夹角为90°、所述第一方向为X方向、所述第二方向为Y方向为例进行举例说明；具体地，本实施例以所述背光模组20包括两设置于所述背板21上的光源基板22，相邻两所述光源基板22沿第一方向X并列设置为例对本申请的技术方案进行举例说明。
其中，所述背板21包括对应所述光源基板22设置的若干凸起211、及位于相邻所述凸起211之间的凹槽212，具体地，在本实施例中，以所述背板21包括对应所述光源基板22设置两所述凸起211、及位于相邻两所述凸起211之间的凹槽212为例对本申请的技术方案进行举例说明。
所述光源基板22覆盖于所述凸起211，具体地，所述光源基板22包括位于所述凸起211上的第一光源模组2221和位于所述凹槽212内壁上的第二光源模组2222；需要说明的是，在本实施例中，与所述凸起211侧部的端面与所述凹槽212内壁所在的面共面，所述凸起211的高度范围为0.3厘米~1厘米，所述凹槽212的宽度范围为2厘米~4厘米，其中，所述凸起211的高度和所述凹槽212的宽度均可以根据实际工艺情况进行选定，本实施例对此不做具体限制；同时，在本实施例中后文如无特别说明，均以所述光源基板22为迷你发光二极管灯板为例进行说明。
具体地，所述光源基板22包括固定于所述背板21上的电路板221（Printed Circuit Board，PCB）、所述电路板221包括位于所述凸起211和所述第一光源模组2221之间的第一部分（图中未标记）、及位于所述凹槽212内壁和所述第二光源模组2222之间的第二部分（图中未标记），所述第一光源模组2221和所述第二光源模组2222均包括多个迷你发光二极管（图中未标记），所述电路板221上表面设置有电路板221焊盘，电路板221焊盘与迷你发光二极管底部的芯片焊盘配合，迷你发光二极管通过芯片焊盘、电路板221焊盘焊接或共晶方式，安装在所述电路板221上。
可以理解的是，本实施例通过在所述背板21上设置两凸起211、及位于各所述凸起211之间的凹槽212，相对于现有背光模组20中，所述背光模组20多采用在整块所述背板21上平铺多块所述光源基板22的方式，不利于所述光源基板22与所述背板21的对位，本实施例采用一所述光源基板22对应一所述凸起211设置，可以更好的定位所述光源基板22与所述背板21的贴合位置，同时，设置位于各所述凸起211之间的凹槽212，可以给位于所述凹槽212内壁上的所述第二光源模组2222留出安放空间，从而简化了所述背光模组20的制备工艺；并且，通过将现有技术中的所述背光模组20设置为位于所述凸起211上的第一光源模组2221和位于所述凹槽212内壁上的第二光源模组2222，一定程度上减低了迷你发光二极管的数量，从而提升所述背光基板的散热能力，提升该背光模组20的使用寿命。
在本实施例中，所述背光模组20还包括位于所述背板21上且对应所述凹槽212内的导光板23，所述导光板23用于将所述凹槽212内的各所述第二光源模组2222发出的光从所述导光板23远离所述背板21的一侧出射；可以理解是的，本实施例通过在所述背板21上且对应所述凹槽212内设置一导光板23，所述导光板23用于将所述凹槽212内的各所述第二光源模组2222发出的光从所述导光板23远离所述背板21的一侧出射，从而有效的缓解相邻两所述光源基板22之间光能损耗的问题，进而保证所述显示装置的亮度均匀性。
请结合图3和图4；其中，所述图3为本申请实施例所提供的背光模组的截面示意图，图4为本申请实施例所提供背光模组中的光路图。
在本实施例中，所述导光板23包括导光部231和网点结构232；其中，所述导光部231至少部分位于所述凹槽212内，且所述导光部231在所述背板21上的正投影位于所述凸起211上；所述网点结构232位于所述导光部231和所述背板21之间，且所述网点结构232对应所述第二光源模组2222设置。
优选地，所述导光部231包括位于所述凹槽212内的导光部主体2311、及位于所述导光部主体2311远离所述凹槽212的一侧且设置于相邻两所述凸起211上的导光部支部2312；其中，所述导光部支部2312在所述背板21上的正投影覆盖所述第二光源模组2222；具体的，所述导光部主体2311与所述第一光源模组2221和所述第二光源模组2222均间隔设置，所述导光部支部2312与所述第一光源模组2221和所述第二光源模组2222均间隔设置。
所述网点结构232包括位于所述导光部主体2311和所述凹槽212之间的第一网点2321、及位于所述导光部支部2312和所述第二光源模组2222之间的第二网点2322；其中，所述第一网点2321位于相邻两所述第二光源模组2222之间且对应两所述第二光源模组2222设置，所述第二网点2322位于所述第二光源模组2222远离所述背板21的一侧且对应所述第二光源模组2222设置；具体地，所述网点结构232包括多个所述第一网点2321和多个所述第二网点2322，多个所述第一网点2321阵列设置于所述凹槽212内且位于所述导光部主体2311在所述凹槽212上的正投影中，多个所述第二网点2322对应所述第二光源模组2222设置。
可以理解的是，在本实施例中，所述第二光源模组2222发出的光线在所述导光部231中传输，当光线遇到设置在所述导光部231内的所述第二网点2322后形成散射，经所述第二网点2322散射的光线的一部分从所述导光部231的上表面，即所述导光部231远离所述背板21的一侧出射，一部分光线在所述导光部231中继续传输，直到再次碰到所述第二网点2322后再次散射，然后从所述导光部231远离所述背板21的一侧出射，从而有效的缓解相邻两所述光源基板22之间的光能损耗的问题；需要说明的是，在图4中，光线在所述导光部231中的传播方向以带箭头的实线表示，以带箭头的虚线表示光线发生了散射。
进一步地，所述第一光源模组2221包括靠近所述凹槽212且间隔设置的多个第一发光单元22211，所述第二光源模组2222包括靠近所述凸起211且间隔设置的多个第二发光单元22221，一所述第一发光单元22211对应一所述第二发光单元22221设置；其中，一所述第一发光单元22211与其对应的一所述第二发光单元22221中，所述第二网点2322对应所述第一发光单元22211的出光侧且位对应所述第二发光单元22221的出光侧设置；需要说明的是，本实施例对所述第一发光单元22211和所述第二发光单元22221地数量均不做具体限制。
可以理解的是，本实施例通过将一所述第一发光单元22211对应一所述第二发光单元22221设置，且一所述第一发光单元22211与其对应的一所述第二发光单元22221中，所述第二网点2322对应所述第一发光单元22211的出光侧且位对应所述第二发光单元22221的出光侧设置，从而使所述第一发光单元22211发出的光和所述第二发光单元22221发出的光能够混合地更加均匀，实现所述背光模组20中，所述凸起211和所述凹槽212交界处均匀出光的目的。
进一步地，所述背光模组20还包括位于所述导光板23远离所述凹槽212一侧的光学膜片24，所述光学膜片24在垂直于所述背光模组20方向上的正投影覆盖所述背板21；其中，所述光学膜片24靠近所述导光板23的一面与所述导光板23靠近所述光学膜片24的一面平行。
具体地，所述光学膜片24位于所述导光部支部2312远离所述背板21的一侧，所述光学膜片24靠近所述导光部支部2312的一面与所述导光部支部2312靠近所述光学膜片24的一面平行，其中，所述导光部主体2311的厚度范围为0.3厘米~1厘米，所述导光部支部2312的厚度范围0.2厘米~0.5厘米，其中，所述导光部主体2311的厚度和所述导光部支部2312的厚度均可以根据实际工艺情况进行选定，本实施例对此不做具体限制。
可以理解的是，请结合图1，现有的所述背光模组20还包括位于所述背光模组20上的光学膜片24、及位于所述光学膜片24和所述背光模组20之间的支撑柱25，所述支撑柱25在所述背光模组20上的投影位于所述光源基板22上，然而，需要说明的是，由于在现有技术中，所述支撑柱25位于所述光学膜片24和所述背光模组20之间，因此所述光源模组222所发出的光线会有部分被所述支撑柱25给遮挡而产生暗影，严重影响光学均匀性以及所述背光模组的视觉效果；本实施例通过设置所述光学膜片24位于所述导光部支部2312远离所述背板21的一侧，从而利用所述导光部231代替现有技术中的所述支撑柱25，进而避免了现有技术中所述支撑柱25可能造成的暗影等不良线现象的发生；同时，通过设置所述光学膜片24靠近所述导光部支部2312的一面与所述导光部支部2312靠近所述光学膜片24的一面平行，从而增大所述导光部支部2312和所述光学膜片24的接触面，使所述光学膜片24受力均匀，不易爆裂。
进一步地，在本实施例中，所述导光板23的厚度大于所述背板21和所述光源基板22的厚度之和，且所述光学膜片24与所述光源基板22间隔设置；具体地，所述导光部主体2311和所述导光部支部2312的厚度之和大于所述背板21和所述光源基板22的厚度之和，使位于所述导光部支部2312远离所述背板21一侧的所述光学膜片24可以和所述光源基板22间隔设置，且所述间距范围为0.1毫米~0.3毫米；可以理解的是，本实施例通过设置所述光学膜片24与所述光源基板22间隔设置，且所述间距范围为0.1毫米~0.3毫米，从而避免所述光学膜片24与所述光源基板22太近，而降低了所述背光模组20的整体亮度。
请参阅图5，本申请实施例所提供显示装置的立体示意图。
本实施例提供一种显示装置，所述显示装置包括显示面板10和上述任一实施例中所述的背光模组20。
在本实施例中，所述显示面板10包括显示区100和与所述显示区100相邻的非显示区（图中未画出），所述背光模组20位于所述显示面板10的背光侧且对应所述显示区100设置。
需要说明的是，在本实施例中，所述显示面板10包括但不限于液晶显示器（Liquid Crystal Display，LCD)，本实施例以所述显示面板10为液晶显示器为例对本申请的技术方案进行举例说明。
可以理解的是，所述背光模组20已经在上述实施例中进行了详细的说明，在此不在重复说明。
在具体应用时，所述显示装置可以为智能手机、平板电脑、笔记本电脑、智能手环、智能手表、智能眼镜、智能头盔、台式机电脑、智能电视或者数码相机等设备的显示屏，甚至可以应用在具有柔性显示屏的电子设备上。
本申请提供一种背光模组及显示装置，所述背光模组背板和光源基板，所述背板上设有若干凸起，相邻所述凸起之间形成凹槽；所述光源基板设置于所述背板上并覆盖于所述凸起；其中，本申请实施例通过在所述凹槽内设置一导光板，将所述凹槽内的各光线朝向远离所述背板的一侧导出，从而有效的缓解相邻两光源基板之间的光能损耗的问题，保证显示面板的亮度均匀性。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种背光模组，其中，包括：
    背板，所述背板设有若干凸起，相邻所述凸起之间形成凹槽；
    光源基板，所述光源基板设置于所述背板上并覆盖于所述凸起；
    导光板，所述导光板设置于所述凹槽内，将所述凹槽内的各光线朝向远离所述背板的一侧导出。
  2. 根据权利要求1所述的背光模组，其中，所述光源基板包括覆盖所述凸起的第一光源模组、及位于所述凹槽内壁上的第二光源模组；
    所述第一光源模组包括间隔设置的多个第一发光单元，所述第二光源模组包括间隔设置的多个第二发光单元；
    其中，所述导光板将所述凹槽内的各所述第二发光单元发出的光向远离所述背板的一侧导出。
  3. 根据权利要求2所述的背光模组，其中，所述导光板包括导光部和网点结构；
    其中，所述导光部至少部分位于所述凹槽内，且所述导光部在所述背板上的正投影位于所述凸起上；所述网点结构位于所述导光部和所述背板之间，且所述网点结构对应所述第二光源模组设置。
  4. 根据权利要求3所述的背光模组，其中，所述导光部包括位于所述凹槽内的导光部主体、及位于所述导光部主体远离所述凹槽的一侧且设置于相邻两所述凸起上的导光部支部；
    其中，所述导光部主体在所述背板上的正投影位于所述凹槽内，所述导光部支部在所述背板上的正投影覆盖所述凹槽。
  5. 根据权利要求4所述的背光模组，其中，所述导光部主体与所述第二光源模组间隔设置，所述导光部支部与所述第一光源模组和所述第二光源模组均间隔设置，且所述导光部支部在所述背板上的正投影覆盖相邻两所述第二光源模组。
  6. 根据权利要求4所述的背光模组，其中，所述网点结构包括位于所述导光部主体和所述凹槽之间的第一网点、及位于所述导光部支部和所述第二光源模组之间的第二网点；其中，
    所述第一网点设置于相邻两所述第二光源模组之间且对应两所述第二光源模组设置，所述第二网点设置于所述第二光源模组远离所述背板的一侧且对应所述第二光源模组设置。
  7. 根据权利要求1所述的背光模组，其中，所述背光模组还包括位于所述导光板远离所述凹槽一侧的光学膜片，所述光学膜片在垂直于所述背光模组方向上的正投影覆盖所述背板；
    其中，所述光学膜片靠近所述导光板的一面与所述导光板靠近所述光学膜片的一面平行。
  8. 根据权利要求7所述的背光模组，其中，所述导光板的厚度大于所述背板和所述光源基板的厚度之和，且所述光学膜片与所述光源基板间隔设置。
  9. 根据权利要求8所述的背光模组，其中，所述光学膜片与所述光源基板的间距为0.1毫米~0.3毫米。
  10. 根据权利要求1所述的背光模组，其中，所述凸起的高度范围为0.3厘米~1厘米，所述凹槽的宽度范围为2厘米~4厘米。
  11. 一种显示装置，其中，所述显示装置包括显示面板和一背光模组，所述背光模组包括：
    背板，所述背板设有若干凸起，相邻所述凸起之间形成凹槽；
    光源基板，所述光源基板设置于所述背板上并覆盖于所述凸起；
    导光板，所述导光板设置于所述凹槽内，将所述凹槽内的各光线朝向远离所述背板的一侧导出。
  12. 根据权利要求11所述的显示装置，其中，所述光源基板包括覆盖所述凸起的第一光源模组、及位于所述凹槽内壁上的第二光源模组；
    所述第一光源模组包括间隔设置的多个第一发光单元，所述第二光源模组包括间隔设置的多个第二发光单元；
    其中，所述导光板将所述凹槽内的各所述第二发光单元发出的光向远离所述背板的一侧导出。
  13. 根据权利要求12所述的显示装置，其中，所述导光板包括导光部和网点结构；
    其中，所述导光部至少部分位于所述凹槽内，且所述导光部在所述背板上的正投影位于所述凸起上；所述网点结构位于所述导光部和所述背板之间，且所述网点结构对应所述第二光源模组设置。
  14. 根据权利要求13所述的显示装置，其中，所述导光部包括位于所述凹槽内的导光部主体、及位于所述导光部主体远离所述凹槽的一侧且设置于相邻两所述凸起上的导光部支部；
    其中，所述导光部主体在所述背板上的正投影位于所述凹槽内，所述导光部支部在所述背板上的正投影覆盖所述凹槽。
  15. 根据权利要求14所述的显示装置，其中，所述导光部主体与所述第二光源模组间隔设置，所述导光部支部与所述第一光源模组和所述第二光源模组均间隔设置，且所述导光部支部在所述背板上的正投影覆盖相邻两所述第二光源模组。
  16. 根据权利要求14所述的显示装置，其中，所述网点结构包括位于所述导光部主体和所述凹槽之间的第一网点、及位于所述导光部支部和所述第二光源模组之间的第二网点；其中，
    所述第一网点设置于相邻两所述第二光源模组之间且对应两所述第二光源模组设置，所述第二网点设置于所述第二光源模组远离所述背板的一侧且对应所述第二光源模组设置。
  17. 根据权利要求11所述的显示装置，其中，所述背光模组还包括位于所述导光板远离所述凹槽一侧的光学膜片，所述光学膜片在垂直于所述背光模组方向上的正投影覆盖所述背板；
    其中，所述光学膜片靠近所述导光板的一面与所述导光板靠近所述光学膜片的一面平行。
  18. 根据权利要求17所述的显示装置，其中，所述导光板的厚度大于所述背板和所述光源基板的厚度之和，且所述光学膜片与所述光源基板间隔设置。
  19. 根据权利要求18所述的显示装置，其中，所述光学膜片与所述光源基板的间距为0.1毫米~0.3毫米。
  20. 根据权利要求11所述的显示装置，其中，所述凸起的高度范围为0.3厘米~1厘米，所述凹槽的宽度范围为2厘米~4厘米。
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