WO2023155392A1 - Mini LED模组及其显示设备 - Google Patents

Mini LED模组及其显示设备 Download PDF

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Publication number
WO2023155392A1
WO2023155392A1 PCT/CN2022/111780 CN2022111780W WO2023155392A1 WO 2023155392 A1 WO2023155392 A1 WO 2023155392A1 CN 2022111780 W CN2022111780 W CN 2022111780W WO 2023155392 A1 WO2023155392 A1 WO 2023155392A1
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WO
WIPO (PCT)
Prior art keywords
light
reflective
reflective lens
led module
mini led
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PCT/CN2022/111780
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English (en)
French (fr)
Inventor
刘欣
尤君平
陈伟雄
邹文聪
李圣
Original Assignee
深圳创维－Rgb电子有限公司
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Publication of WO2023155392A1 publication Critical patent/WO2023155392A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • This application relates to the field of Mini LED, in particular to a Mini LED module and its display device.
  • Mini LED (submillimeter light-emitting diode) technology is an emerging form of backlight module technology, which realizes regional dimming in a smaller range through a large number of densely distributed LEDs (Light-Emitting Diode, referred to as LED, light-emitting diode).
  • LED Light-Emitting Diode
  • Mini LED display products have begun to be used in ultra-large-screen high-definition displays, such as monitoring and command, high-definition broadcasting, high-end theaters, medical diagnosis, advertising display, conferences and exhibitions, office displays, virtual reality and other commercial fields .
  • Mini LED backlight technology has obvious advantages, but it also has some obvious technical defects in the display application side: 1.
  • the light mixing distance is small, and the uneven distribution of light energy forms the feature of alternating light and dark. 2.
  • the lack of light energy at the seam of the light board leads to the display of dark bands.
  • the traditional Mini LED module has a large number of LEDs, and the PCB (Printed Circuit Board, referred to as PCB) is thick and expensive.
  • the purpose of this application is to provide a Mini LED module and its display device, which aims to solve the problem of poor display effect of the Mini LED module in the prior art.
  • a Mini LED module comprising:
  • the astigmatism part is used to be arranged on the reflective sheet;
  • the astigmatism part includes a light-transmitting film and a reflective lens;
  • the reflective lens is used to cover the light emitting diode, and the reflective lens and the light emitting diode are one One corresponding setting;
  • the upper surface of the reflective lens is in a concave state;
  • the reflective lens exceeds the light-transmitting film upwards, and the circumferential direction of the reflective lens is a smooth surface;
  • the light-transmitting film is used for laying on the The surface of the reflective sheet, and the transparent film is connected to each of the reflective lenses, and the transparent film is provided with a plurality of penetrating light holes.
  • the upper surface of the reflective lens is a frosted surface.
  • the reflective lens is in the shape of a truncated cone, and its peripheral surface gradually shrinks toward the axis along the direction of increasing height.
  • the bottom surface of the reflective lens is provided with mounting holes, and the light-emitting diodes are arranged in the corresponding mounting holes; the mounting holes extend upwards and have a height smaller than that of the reflective lens.
  • the density of the light transmission holes between any two adjacent reflective lenses gradually increases from the middle to both ends.
  • the reflective lens and the transparent film are made of polyester resin.
  • the reflective lens is integrally formed with the light-transmitting film.
  • Mini LED module also includes a PCB board and a backplane
  • the PCB boards are provided with multiple pieces, each of the PCB boards is spliced with each other and arranged under the reflector, the light emitting diodes are arranged on the corresponding PCB boards, and the tops of each of the light emitting diodes are outside beyond the reflective sheet.
  • the back plate is in the shape of a groove, and the PCB board is installed in the groove formed by the back plate.
  • Mini LED module also includes:
  • the diffusion plate cover is arranged above the back plate to close the groove formed by the back plate;
  • a diaphragm, the diaphragm is a multi-layer thin film structure and attached to the diffuser plate.
  • the density of the light-transmitting holes is realized by the number of the light-transmitting holes, and a small number of the light-transmitting holes are arranged in the middle area between the two reflective lenses, and from the middle area toward the two ends. The number of light-transmitting holes is gradually increased.
  • the reflective lens and the transparent film are made of polystyrene or polycarbonate.
  • the circumferential direction of the reflective lens is a smooth surface, so that the light reflected downward by the upper surface of the reflective lens is refracted along the circumferential direction of the reflective lens, and the circumferential direction is the direction of the circumferential side of the reflective lens. Arc surface.
  • the present application also provides a display device, which includes the above-mentioned Mini LED module.
  • the present application at least has the following advantages and positive effects:
  • the reflective lens cover is arranged on the light-emitting diode, and the light emitted by the light-emitting diode enters the reflective lens, and the upper surface of the reflective lens is in a concave state, so it reaches the reflective lens. Most of the light on the upper surface is reflected and travels downward.
  • the reflective lens exceeds the light-transmitting film upwards, and the peripheral surface of the reflective lens is a smooth surface, so the light reflected downward from the upper surface of the reflective lens will be refracted along the peripheral surface of the reflective lens, partly The light rays are directly refracted from the peripheral surface of the reflective lens.
  • the light refracted from the peripheral surface of the reflective lens is in an oblique downward state, and reaches the surface of the reflective sheet along the light-transmitting hole. After being reflected by the reflective sheet, the travel of light can be increased, so that the light is mixed , so as to obtain a relatively uniform surface light energy.
  • Figure 1 is a schematic diagram of the light emitting angle of a diode.
  • Figure 2 is a schematic diagram of the structure of a traditional Mini LED module.
  • Fig. 3 is a schematic structural diagram of a Mini LED module in an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of the astigmatism part in an embodiment of the present application.
  • Fig. 5 is a schematic diagram of light propagation of the astigmatism part in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the distribution of the density of light transmission holes and the intensity of light in an embodiment of the present application, wherein the origin of the coordinate system is the midpoint of two adjacent reflective lenses.
  • FIG. 7 is a schematic diagram of the propagation of light on the transparent film and the reflective sheet in an embodiment of the present application.
  • the light output angle of a single light emitting diode 2 is usually about 120°, and its light energy is mainly concentrated on the front side of the light emitting surface, and the light energy is weaker as it gets closer to the edge.
  • the light mixing distance H of the traditional Mini LED module 200 in the prior art is usually about 5mm, so that the light energy reaching the diffuser plate is in a densely distributed state, and the forward area of the light emitting diode 2 is a bright area S1, the area between two adjacent light-emitting diodes 2 is a slightly dark area S2, which forms a visual effect feature of alternating light and dark.
  • a Mini LED module 100 is disclosed.
  • the Mini LED module 100 includes a groove-shaped backplane 6 and a PCB board 7 arranged in the backplane 6. , the light-emitting diode 2 electrically connected to the PCB board 7 and arranged on the surface of the PCB board 7, the reflective sheet 1 bonded to the surface of the PCB board 7, the astigmatism part 3 bonded to the surface of the reflective sheet 1, and the concave part covered on the back plate 6
  • the diffuser plate 5 with the slot opening and the diaphragm 4 bonded on the diffuser plate 5 .
  • the backboard 6 is a basic assembly platform, which is roughly in the shape of a groove
  • the PCB board 7 is installed in the groove formed by the backboard 6, and the light-emitting diodes 2 are provided with a plurality, each of the The LED 2 is installed on the PCB 7 and electrically connected with the PCB 7 .
  • the reflective sheet 1 is laid on the PCB 7 , and a through hole is opened in the reflective sheet 1 corresponding to the light emitting diode 2 , so that the light emitting diode 2 is embedded on the reflective sheet 1 .
  • the end of the reflection sheet 1 is arranged obliquely to reflect the light reaching there upwards to the diffuser plate 5 .
  • the diffuser 3 is laid on the reflection sheet 1 .
  • the diffuser plate 5 is covered above the back plate 6 to close the opening of the groove formed by the back plate 6 , and the diffuser plate 5 and the LEDs 2 are vertically spaced apart.
  • the film 4 is attached above the backlight plate.
  • the diffuser 3 includes a transparent film 31 and a reflective lens 32 , wherein the edge of the reflective lens 32 is connected to the transparent film 31 .
  • the reflective lens 32 is covered on the LED 2 , there are multiple reflective lenses 32 , and each of the reflective lenses 32 is arranged in a one-to-one correspondence with each of the LEDs 2 .
  • the light emitted by the light-emitting diode 2 enters the reflective lens 32, and the upper surface of the reflective lens 32 is in a concave state. Therefore, most of the light reaching the upper surface of the reflective lens 32 will propagate downward after reflection. .
  • the reflective lens 32 exceeds the light-transmitting film 31 upwards, and the circumferential direction of the reflective lens 32 is a smooth surface.
  • the smooth surface here means that the peripheral surface of the reflective lens 32 has a relatively small roughness to facilitate light transmission. Refract out. Therefore, the light reflected downward from the upper surface of the reflective lens 32 will be refracted along the circumferential direction of the reflective lens 32 , and the circumferential direction refers to the arc surface on the peripheral side of the reflective lens 32 .
  • the light-transmitting film 31 is transparent and has a high light transmittance.
  • the light-transmitting film 31 is used to lay on the surface of the reflective sheet 1 , and the light-transmitting film 31 is provided with a plurality of penetrating light-transmitting holes 311 .
  • the light refracted from the peripheral surface of the reflective lens 32 is in an obliquely downward state, and reaches the surface of the reflective sheet 1 along the light-transmitting hole 311, and the reflection of the reflective sheet 1 can increase the travel of light , so that the light is mixed to obtain a relatively uniform surface light energy.
  • the light rays refracted from the side surfaces of two adjacent reflective lenses 32 converge in the area between the two reflective lenses 32 .
  • the light rays refracted from the peripheral surface of the reflective lens 32 on the left side are obliquely down to the middle area of the two reflective lenses 32 on the right side, and the peripheral surface of the reflective lens 32 on the right side
  • the refracted light slant down to the middle area of the two reflective lenses 32 along its left side. Since the angles of the light refracted by two adjacent reflective lenses 32 are different, the light in the middle area mixes more evenly.
  • the diaphragm 4 is a film structure with multiple layers.
  • the diaphragm 4 is used to improve optical efficiency and reduce stray light.
  • the detailed structure of the diaphragm 4 can refer to related technologies, and will not be described in detail herein.
  • the diffusion plate 5 is in the shape of a plate, which is used to disperse the luminous flux and distribute the light evenly.
  • the detailed structure of the diffusion plate 5 and its connection with the diaphragm 4 and the back plate 6 can refer to related technologies, and will not be described in detail herein.
  • the upper surface of the reflective lens 32 is in a concave state, it has a divergent effect on a small amount of light refracted from the upper surface of the reflective lens 32, so that the light refracted from the top can be evenly diffused outwards .
  • the reflective lens 32 is in the shape of a truncated cone, and its peripheral surface gradually shrinks toward the axis along the direction of rising height, that is, the two sides of the axial cross-sectional view of the reflective lens 32 The sides are in an inclined state, and the tops thereof move toward the axis of the reflective lens 32 .
  • the light entering the reflective lens 32 is refracted from the peripheral surface of the reflective lens 32 after multiple reflections, and its angle is inclined downward, so that the refracted light reaches the reflective sheet 1 .
  • the bottom surface of the reflective lens 32 is provided with mounting holes 322, and the light-emitting diodes 2 are arranged in the corresponding mounting holes 322 to realize the reflective lens.
  • 32 is set on the light emitting diode 2.
  • the installation hole 322 extends upwards, and its height is smaller than that of the reflective lens 32 , so that the light emitted by the LED 2 can enter the reflective lens 32 through the path of air ⁇ reflective lens 32 .
  • the outline of the installation hole 322 is roughly semi-elliptical, so that the lights of different angles emitted by the light emitting diode 2 can all enter the reflective lens 32 at different angles along the surface of the installation hole 322, and make it incident on all Most of the light in the reflective lens 32 can be emitted from the peripheral surface of the reflective lens 32 .
  • the light refracted from the reflective lens 32 reaches the surface of the reflective sheet 1 through the light hole 311 , and is reflected and scattered by the reflective sheet 1 to form divergent light that can be emitted upwards, effectively increasing the optical path and facilitating light mixing.
  • the density of the light transmission holes 311 between any two adjacent reflection lenses 32 gradually increases from the middle to both ends, and a light transmission hole 311 with a lower density is set in the middle area, and part of the light energy is incident on the light transmission film 31, and its internal total reflection is consumed, and effective light energy cannot be formed, which can reduce the light mixing effect in the middle area, and set light-transmitting holes 311 with higher density at both ends to increase the light-mixing effect at both ends, through the light-transmitting
  • the density arrangement design of the holes 311 can evenly redistribute the light energy reaching the reflection sheet 1 , so as to obtain a relatively uniform surface light source on the diffuser plate 5 , thereby avoiding the appearance of light and dark features on the diffuser plate 5 .
  • the duty ratio here is equal to the area of the light-transmitting hole 311 on the carrier film divided by the total area of the carrier film.
  • the traditional Mini LED module 200 is provided with a large number of light emitting diodes 2, resulting in a thicker PCB board 7 and higher cost.
  • the Mini LED module 100 proposed in this application can increase the arrangement spacing of the light-emitting diodes 2 due to the increased light-mixing effect, thereby reducing the total number of light-emitting diodes 2 and correspondingly reducing The thickness of PCB board 7, in order to reduce cost.
  • the reflective lens 32 and the transparent film 31 are made of polyester resin (also called PET, Polyethylene terephthalate, PET for short). Since polyester resin has good mechanical properties, the reflective lens 32 and the light-transmitting film 31 made of polyester resin have good impact strength and tensile properties, so that it is convenient to attach the reflective lens 32 to the transparent film 31.
  • the light film 31 is installed on the reflection sheet 1 .
  • the polyester resin has high transparency and low gloss, and the reflective lens 32 and the transparent film 31 made of polyester resin have better optical characteristics, and light energy propagates in the reflective lens 32 and the transparent film 31 , the loss is small.
  • polyester resin also has excellent resistance to high and low temperatures, oil resistance, fat resistance, dilute acid resistance, dilute alkali resistance, and most solvent resistance. Therefore, the reflective lens 32 made of polyester resin and the light-transmitting film 31 have Good stability, no expansion or contraction deformation due to increase or decrease of ambient temperature.
  • the material of the reflective lens 32 and the transparent film 31 can also be polystyrene (also called PS, Polystyrene, referred to as PS) or polycarbonate (also called PC, Polycarbonate, referred to as PC) .
  • the reflective lens 32 is integrally formed with the transparent film 31 .
  • the reflective lens 32 and the transparent film 31 are made of polyester resin.
  • the polyester resin particles are processed into the astigmatism part 3 by precision injection molding technology, that is, the astigmatism part 3 is made by precision injection molding technology.
  • the reflective lens 32 is integrally formed with the light-transmitting film 31, which can avoid the need to bond the reflective lens 32 to the light-transmitting film 31 after the reflective lens 32 and the light-transmitting film 31 are separately produced.
  • Precision injection molding can improve production efficiency and reduce installation steps.
  • the specific steps and processing techniques of the precision injection molding technology can refer to related technologies, and will not be described in detail herein.
  • each of the PCB boards 7 is spliced with each other and arranged under the reflection sheet 1 .
  • the light-emitting diodes 2 are arranged on the corresponding PCB board 7, and the tops of the light-emitting diodes 2 exceed the reflection sheet 1 outwards, so that the light emitted by the light-emitting diodes 2 can pass through the light-scattering part 3 dispersed and shot onto the reflective sheet 1.
  • the top ends of any two adjacent PCB boards 7 that are spliced are covered by the diffuser 3 . Since the light-transmitting film 31 is laid on the top of the PCB board 7, under the joint action of the light-transmitting hole 311 and the reflective sheet 1, the light is mixed above the joints of the PCB boards 7, The light above the joints of the PCB boards 7 is fully mixed, therefore, there will be no dark bands in the gap corresponding to the positions on the diffuser plate 5 at the joints of the PCB boards 7 , which can increase the overall display effect.
  • the assembly method of the Mini LED module 100 proposed in this application is as follows: the PCB board 7 on which the LED is installed is bonded to the inner side of the back plate 6 through double-sided adhesive, and then the reflector 1 is bonded to the inside of the back plate 6. The front of the PCB board 7, and then the astigmatism part 3 is bonded on the reflective sheet 1 by multi-point glue, so that the light-transmitting film 31 covers the reflective sheet 1, and at the same time, the reflective The lenses 32 are in one-to-one correspondence with the LEDs 2 , and the reflective lens 32 is covered on the LEDs 2 .
  • the present application provides a Mini LED module 100
  • the Mini LED module 100 includes a reflective sheet 1, a light emitting diode 2, and an astigmatism part 3, and the astigmatism part 3 includes a light-transmitting film 31 and a reflective lens 32.
  • the reflective lens 32 is covered on the light-emitting diode 2, the light emitted by the light-emitting diode 2 enters the reflective lens 32, and the upper surface of the reflective lens 32 is in a concave state. Most of the light on the upper surface of the reflective lens 32 propagates downward after reflection, and is refracted along the peripheral surface of the reflective lens 32 , and part of the light is directly refracted from the peripheral surface of the reflective lens 32 .
  • the light refracted from the peripheral surface of the reflective lens 32 is in an oblique downward state, and reaches the surface of the reflective sheet 1 along the light transmission hole 311, and is reflected by the reflective sheet 1, so that the light is mixed, thereby A relatively uniform surface light energy is obtained.
  • the present application also provides a display device (not shown in the figure).
  • the display device is a TV set, and the TV set includes the above-mentioned Mini LED module 100 for providing a display function.
  • the display device is not limited to a television set.
  • the display device may also be an outdoor display screen, an exhibition screen, and the like.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • a first feature being "on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

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Abstract

一种Mini LED模组（100）及其显示设备，Mini LED模组（100），包括：反射片（1）；发光二极管（2），用于嵌设在反射片（1）上；散光部（3），用于设置在反射片（1）上；散光部（3）包括透光膜（31）和反射透镜（32）；反射透镜（32）用于罩设在发光二极管（2）上，且反射透镜（32）与发光二极管（2）一一对应设置；反射透镜（32）的上表面呈下凹状态；反射透镜（32）向上超出透光膜（31），反射透镜（32）的周向为光滑面；透光膜（31）用于铺设在反射片（1）的表面，且透光膜（31）与各反射透镜（32）均连接，透光膜（31）上开设有多个贯穿的透光孔（311）。达到反射透镜（32）上表面的大部分的光经过反射会向下传播，并沿反射透镜（32）的周面折射出去，部分光线直接从反射透镜（32）的周面折射出去，经过反射片（1）的反射，使得光线被混合，从而得到相对均匀的面光能。

Description

Mini LED模组及其显示设备 技术领域
本申请涉及Mini LED领域，尤其涉及一种Mini LED模组及其显示设备。
背景技术
Mini LED(次毫米发光二极管)技术是一种新兴的背光模组技术形态，其通过大量密布的LED(Light-Emitting Diode，简称LED，发光二极管)实现更小范围内的区域调光，相比于传统的背光设计，其能够在更小的混光距离内实现具备更好的亮度均匀性、更高的的色彩对比度、更高的亮度指标，并可以灵活实现多种分区显示效果。
随着Mini LED显示技术的迅速发展，Mini LED显示产品已开始应用于超大屏高清显示，如监控指挥、高清演播、高端影院、医疗诊断、广告显示、会议会展、办公显示、虚拟现实等商用领域。
Mini LED背光技术具有明显的优势，但其在显示应用端也存在一些明显的技术缺陷：1、混光距离较小，光能分布不均形成明暗相间的特征。2、灯板拼接缝光能缺失导致显示暗带。3、传统Mini LED模组LED数量繁多、PCB(Printed Circuit Board，简称PCB，印制电路板)板较厚，成本昂贵。
因此，现有技术存在缺陷，有待改进和发展。
发明内容
鉴于上述现有技术的不足，本申请的目的在于提供一种一种Mini LED模组及其显示设备，旨在解决现有技术中Mini LED模组显示效果较差的问题。
本申请解决技术问题所采用的一技术方案如下：
一种Mini LED模组，包括：
反射片；
发光二极管，用于嵌设在所述反射片上；
散光部，用于设置在所述反射片上；所述散光部包括透光膜和反射透镜；所述反射透镜用于罩设在所述发光二极管上，且所述反射透镜与所述发光二极管 一一对应设置；所述反射透镜的上表面呈下凹状态；所述反射透镜向上超出所述透光膜，所述反射透镜的周向为光滑面；所述透光膜用于铺设在所述反射片的表面，且所述透光膜与各所述反射透镜均连接，所述透光膜上开设有多个贯穿的透光孔。
进一步的，所述反射透镜的上表面为磨砂面。
进一步的，所述反射透镜呈圆台状，且其周面沿高度上升的方向逐渐向轴线收缩。
进一步的，所述反射透镜的底面开有安装孔，所述发光二极管设置在对应的所述安装孔内；所述安装孔向上延伸，且其高度小于所述反射透镜的高度。
进一步的，任意相邻两所述反射透镜之间的所述透光孔的密度自中间向两端逐渐增大。
进一步的，所述反射透镜与所述透光膜的材质均为涤纶树脂。
进一步的，所述反射透镜与所述透光膜一体成型。
进一步的，所述Mini LED模组还包括PCB板和背板；
所述PCB板设有多块，各所述PCB板均相互拼接设置在所述反射片的下方，所述发光二极管设置在对应的所述PCB板上，且各所述发光二极管的顶端均向外超出所述反射片。
进一步的，任意相邻两所述PCB板的拼接处的顶端均被所述散光部覆盖。
进一步地，所述背板呈凹槽状，所述PCB板安装在所述背板形成的凹槽内。
进一步地，所述Mini LED模块还包括：
扩散板，所述扩散板盖设在所述背板上方，以封闭所述背板形成的所述凹槽；
膜片，所述膜片为多层薄膜结构并贴合在所述扩散板上。
进一步地，所述透光孔的密度通过所述透光孔的数量来实现，在两所述反射透镜之间的中间区域设置数量较少的所述透光孔，从中间区域朝两端所述透光孔的数量逐渐增多。
进一步地，所述反射透镜与所述透光膜的材质为聚苯乙烯或聚碳酸酯。
进一步地，所述反射透镜的周向为光滑面，以使所述反射透镜上表面向下反射的光沿所述反射透镜的周向折射出去，所述周向是所述反射透镜周侧的圆弧 面。
本申请还提供了一种显示设备，所述显示设备包括上述Mini LED模组。
由上述技术方案可知，本申请至少具有如下优点和积极效果：
本申请中，所述反射透镜罩设在所述发光二极管上，所述发光二极管发出的光进入所述反射透镜内，所述反射透镜的上表面呈下凹状态，因此，达到所述反射透镜上表面的大部分的光经过反射会向下传播。所述反射透镜向上超出所述透光膜，且所述反射透镜的周面为光滑面，因此从所述反射透镜上表面向下反射的光会沿所述反射透镜的周面折射出去，部分光线直接从所述反射透镜的周面折射出去。从所述反射透镜的周面折射出去光呈倾斜向下的状态，并沿所述透光孔到达所述反射片表面，经过所述反射片的反射，可增加光的行程，使得光线被混合，从而得到相对均匀的面光能。
附图说明
图1是二极管的发光角度示意图。
图2是传统Mini LED模组的结构示意图。
图3是本申请一实施例中Mini LED模组的结构示意图。
图4是本申请一实施例中散光部的结构示意图。
图5是本申请一实施例中散光部的光线传播示意图。
图6是本申请一实施例中透光孔的密度与光照强度的分布示意图，其中，该坐标系的原点为相邻两反射透镜的中点。
图7是本申请一实施例中光线在透光膜以及反射片上的传播示意图。
附图标记说明：
100、Mini LED模组；
1、反射片；2、发光二极管；3、散光部；31、透光膜；311、透光孔；32、反射透镜；322、安装孔；4、膜片；5、扩散板；6、背板；7、PCB板；
200、传统Mini LED模组。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
请参阅图1，现有技术中，单体发光二极管2的出光角度通常为120°左右，其光能主要集中在发光面正向，越靠近边缘光能越弱。请参阅图2，现有技术中的传统Mini LED模组200的混光距离H通常为5mm左右，使得到达扩散板的光能呈现疏密分布的状态，发光二极管2正向区域为高亮区S1，相邻两发光二极管2之间区域为稍暗区S2，即形成明暗相间的视效特征。并且，在，相邻两PCB板的拼接处由于缺少光源，导致拼接处的上方出现间隙暗带S，上述稍暗区S2以及间隙暗带S严重影响现有技术中传统Mini LED模组200的画质质量，并且在一定程度上制约了Mini LED技术的发展。
请参阅图3，本申请的一实施例中，公开了一种Mini LED模组100，所述Mini LED模组100包括呈凹槽状的背板6、设置在背板6内的PCB板7、与PCB板7电连接且设置在PCB板7表面的发光二极管2、粘接在PCB板7表面的反射片1、粘接在反射片1表面的散光部3、盖合在背板6凹槽开口的扩散板5以及贴合在扩散板5上的膜片4。其中，所述背板6为基础组装平台，其大致呈凹槽状，所述PCB板7安装在所述背板6形成的凹槽内，所述发光二极管2设有多个，各所述发光二极管2安装在所述PCB板7上，并与所述PCB板7电连接。所述反射片1铺设在所述PCB板7上，所述反射片1对应所述发光二极管2处开设有通孔，使得所述发光二极管2嵌设在所述反射片1上。所述反射片1的末端倾斜设置，以将达到此处的光向上反射至扩散板5。所述散光部3铺设在所述反射片1上。所述扩散板5盖设在所述背板6的上方，以封闭背板6形成的凹槽的开口，所述扩散板5与所述发光二极管2沿竖直方向间隔设置。所述膜片4贴附在所述背光板的上方。
请参阅图4和图5，所述散光部3包括透光膜31和反射透镜32，其中所述反射透镜32的边缘与所述透光膜31连接。所述反射透镜32罩设在所述发光二极管2上，所述反射透镜32设有多个，且各所述反射透镜32与各所述发光二极管2一一对应设置。所述发光二极管2发出的光进入所述反射透镜32内，所述反射透镜32的上表面呈下凹状态，因此，达到所述反射透镜32上表面的大部分的光经过反射会向下传播。所述反射透镜32向上超出所述透光膜31，且所述反 射透镜32的周向为光滑面，此处的光滑面是指所述反射透镜32的周面粗糙度较小，以利于光线折射出去。因此从所述反射透镜32上表面向下反射的光会沿所述反射透镜32的周向折射出去，所述周向是指所述反射透镜32周侧的圆弧面。
部分光线直接从所述反射透镜32的周向折射出去。所述透光膜31呈透明状态，具有较高的透光率。所述透光膜31用于铺设在所述反射片1的表面，所述透光膜31上开设有多个贯穿的透光孔311。从所述反射透镜32的周面折射出去的光呈倾斜向下的状态，并沿所述透光孔311到达所述反射片1表面，经过所述反射片1的反射，可增加光的行程，使得光线被混合，从而得到相对均匀的面光能。
并且，相邻两所述反射透镜32的侧面折射出来的光线在两所述反射透镜32之间的区域汇合。请参阅图3，位于左侧的所述反射透镜32的周面折射出来光线沿自身右侧倾斜向下到达两所述反射透镜32的中间区域，位于右侧的所述反射透镜32的周面折射出来光线沿自身的左侧倾斜向下到达两所述反射透镜32的中间区域，由于相邻两所述反射透镜32折射出来的光线的角度不同，使得中间区域的光线混合的更加均匀。
所述膜片4为薄膜结构，其具有多层。所述膜片4用于提高光学效率、减少杂光。所述膜片4的详细结构可参照相关技术，本文不再详细描述。
所述扩散板5呈板状，其用于打散光通量，让光均匀分布。所述扩散板5的详细结构以及其与膜片4以及背板6的连接可参照相关技术，本文不再详细描述。
所述反射片1呈薄膜状，所述反射片1沿自身的厚度方向具有多层气泡。由于光能的反射率r为：r＝(n1-n2) 2/(n1+n2) 2，其中n1和n2分别为分别是两种介质的真实折射率。设定N为光能经过的气泡层数目，则气泡层对该光能的总反射率R为：R＝1-(1-r) N，其中r为反射率，N为介质层数，从该等式可以看出，光能经过的气泡层数目N越多，总反射率R越接近于100％，所以所述反射片1内的多层气泡结构可将照射到其表面的大部分光反射回去。因此，从所述反射透镜32的周面折射出去后的光线通过所述透光膜31上的透光孔311可到达所述反射片1的表面，并通过反射片1反射到所述扩散板5上。
请参阅图4，作为本实施例的一种实现方式，所述反射透镜32的上表面为 磨砂面，因此所述反射透镜32的上表面具有一定的粗糙度，因此其具有漫反射的能力。当所述发光二极管2发出的光经过空气到达所述反射透镜32的表面，光线在此处发生漫反射，从而将此处的光线打散，光线经过多次反射后可从所述反射透镜32的周面折射出去，从而实现通过穿孔达到所述反射片1上，从而以实现反射。
并且，由于所述反射透镜32的上表面呈下凹状态，因此，其对从所述反射透镜32的上表面折射出去的少量光线具有发散作用，使得从顶部折射出去的光线能均匀向外扩散。
请参阅图4，作为本实施例的一种实现方式，所述反射透镜32呈圆台状，且其周面沿高度上升的方向逐渐向轴线收缩，即所述反射透镜32的轴向剖视图的两侧边呈倾斜状态，且其顶端朝向所述反射透镜32的轴线靠拢。进入所述反射透镜32内部的光线经过多次反射后从所述反射透镜32的周面折射出去后，其角度向下倾斜，从而便于折射出去的光线到达所述反射片1上。
请参阅图4，作为本实施例的一种实现方式，所述反射透镜32的底面开有安装孔322，所述发光二极管2设置在对应的所述安装孔322内，以实现所述反射透镜32罩设在所述发光二极管2上。所述安装孔322向上延伸，且其高度小于所述反射透镜32的高度，使得所述发光二极管2发出的光能以空气→反射透镜32的路径进入到所述反射透镜32内。所述安装孔322的轮廓大致呈半椭圆形，使得所述发光二极管2发出的不同角度的光均能沿安装孔322表面以不同的角度入到所述反射透镜32内，并且使得入射到所述反射透镜32内的光大部分能从所述反射透镜32的周面射出。
请参阅图5和图6，作为本实施例的一种实现方式，任意相邻两所述反射透镜32之间的所述透光孔311的密度自中间向两端逐渐增大。请参阅图3，以相邻两所述反射透镜32的中间位置建立直角坐标系，其中I为光照强度，ρ为透光孔311的密度，光从所述反射透镜32内折射出来后，相邻两所述反射透镜32之间的光照强度在两所述反射透镜32的中间区域最大，并且从中间区域朝两侧，光照强度逐渐减弱。从所述反射透镜32折射出的光经过透光孔311达到反射片1表面，经反射片1的反射、散射后形成发散光能向上出射，有效增加光程，利于混光。任意相邻两所述反射透镜32之间的所述透光孔311的密度自中间向两 端逐渐增大，在中间区域设置密度较低的透光孔311，部分光能入射到透光膜31中，并在其内部全反射消耗，无法形成有效光能，可降低中间区域的混光效果，在两端设置密度较高的透光孔311，以增加两端的混光效果，通过透光孔311疏密的排布设计对到达反射片1的光能进行均匀化再次分配，从而在扩散板5上得到相对均匀的面光源，从而避免扩散板5上出现明暗相间的特征。
其中，透光孔311的密度通过透光孔311的数量来实现，即在两所述反射透镜32之间的中间区域设置数量较少的透光孔311，从中间区域朝两端，所述透光孔311的数量逐渐增多。
在一些实施例中，还可以通过改变透光孔311的大小来实现，即在两所述反射透镜32之间的中间区域设置面积较小的透光孔311，通过改变透光膜31上的占空比，来实现混光。该处的占空比等于承载膜上所述透光孔311的面积除以承载膜的总面积。
并且，传统Mini LED模组200设置了大量的发光二极管2，导致PCB板7较厚，成本较高。相对于现有技术，本申请提出的Mini LED模组100由于混光效果增加，可增大所述发光二极管2的排布间距，进而使得发光二极管2的总数量减少，同时还可相应的降低PCB板7的厚度，以降低成本。
作为本实施例的一种实现方式，所述反射透镜32与所述透光膜31的材质均为涤纶树脂(又叫PET，Polyethylene terephthalate，简称PET)。由于涤纶树脂具有良好的力学性能，因此由涤纶树脂制作的所述反射透镜32与所述透光膜31具有良好的抗冲击强度以及拉伸性能，从而便于将所述反射透镜32与所述透光膜31安装在所述反射片1上。涤纶树脂透明度高，光泽性小，由涤纶树脂制作的所述反射透镜32与所述透光膜31具有较好的光学特性，光能在所述反射透镜32与所述透光膜31内传播，损失较小。并且，涤纶树脂还具有优良的耐高、低温以及耐油、耐脂肪、耐稀酸、稀碱，耐大多数溶剂，因此，由涤纶树脂制作的所述反射透镜32与所述透光膜31具有较好的稳定性，不会因为环境温度的升高或降低导致膨胀或收缩变形。
在其他实施例中，所述反射透镜32与所述透光膜31的材质还可以为聚苯乙烯(又叫PS，Polystyrene，简称PS)或聚碳酸酯(又叫PC，Polycarbonate，简称PC)。
所述反射透镜32与所述透光膜31一体成型。在本实施例中，所述反射透镜32与所述透光膜31的材质均为涤纶树脂，具体地，通过精密注塑成型技术将涤纶树脂粒子加工成为散光部3，即通过精密注塑成型技术将所述反射透镜32与所述透光膜31一体成型，可避免单独生产所述反射透镜32与所述透光膜31后需要将所述反射透镜32粘接在所述透光膜31上，精密注塑一体成型可提高生产效率，减少安装步骤。所述精密注塑成型技术的具体步骤以及加工工艺可参照相关技术，本文不再详细描述。
请参阅图3，作为本实施例的一种实现方式，所述PCB板7设有多块，各所述PCB板7均相互拼接设置在所述反射片1的下方。所述发光二极管2设置在对应的所述PCB板7上，且各所述发光二极管2的顶端均向外超出所述反射片1，使得所述发光二极管2发出的光能通过所述散光部3分散，并射到所述反射片1上。
请参阅图3，作为本实施例的一种实现方式，任意相邻两所述PCB板7的拼接处的顶端均被所述散光部3覆盖。由于所述透光膜31铺设在所述PCB板7的上方，在所述透光孔311以及所述反射片1的共同作用下，对各所述PCB板7的拼接处上方进行混光，使得各所述PCB板7拼接处上方的光线得到充分的混合，因此，各所述PCB板7拼接处对应所述扩散板5上的位置不会出现间隙暗带，可增加整体的显示效果。
本申请提出的的Mini LED模组100的组装方式为：将安装有所述LED的PCB板7通过双面胶粘接在所述背板6内侧，再将所述反射片1粘接在所述PCB板7正面，再将所述散光部3通过多点点胶的方式粘接在所述反射片1上，使所述透光膜31覆盖在所述反射片1上，同时使所述反射透镜32与所述发光二极管2一一对应，且所述反射透镜32反射透镜32罩设在所述发光二极管2上。
综上所述，本申请提供了一种Mini LED模组100，所述Mini LED模组100包括反射片1、发光二极管2以及散光部3，所述散光部3包括透光膜31和反射透镜32，所述反射透镜32罩设在所述发光二极管2上，所述发光二极管2发出的光进入所述反射透镜32内，所述反射透镜32的上表面呈下凹状态，因此，达到所述反射透镜32上表面的大部分的光经过反射会向下传播，并沿所述反射透镜32的周面折射出去，部分光线直接从所述反射透镜32的周面折射出去。从所 述反射透镜32的周面折射出去光呈倾斜向下的状态，并沿所述透光孔311到达所述反射片1表面，经过所述反射片1的反射，使得光线被混合，从而得到相对均匀的面光能。
本申请还提供了一种显示设备(图未示)，在本实施例中，该显示设备为电视机，该电视机包含上述Mini LED模组100，以用于提供显示功能。但所述显示设备并不局限于电视机，示例性地，该显示设备还可以为户外显示屏、会展屏幕等。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
当然，本申请上述实施例的描述较为细致，但不能因此而理解为对本申请的保护范围的限制，本申请还可有其它多种实施方式，基于本实施方式，本领域的普通技术人员在没有做出任何创造性劳动的前提下所获得其他实施方式，都属于本申请所保护的范围，本申请的保护范围以所附权利要求书为准。

Claims (15)

  1. 一种Mini LED模组，其中，包括：
    反射片；
    发光二极管，用于嵌设在所述反射片上；
    散光部，用于设置在所述反射片上；所述散光部包括透光膜和反射透镜；所述反射透镜用于罩设在所述发光二极管上，且所述反射透镜与所述发光二极管一一对应设置；所述反射透镜的上表面呈下凹状态；所述反射透镜向上超出所述透光膜，所述反射透镜的周向为光滑面；所述透光膜用于铺设在所述反射片的表面，且所述透光膜与各所述反射透镜均连接，所述透光膜上开设有多个贯穿的透光孔。
  2. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜的上表面为磨砂面。
  3. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜呈圆台状，且其周面沿高度上升的方向逐渐向轴线收缩。
  4. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜的底面开有安装孔，所述发光二极管设置在对应的所述安装孔内；所述安装孔向上延伸，且其高度小于所述反射透镜的高度。
  5. 根据权利要求1所述的Mini LED模组，其中，任意相邻两所述反射透镜之间的所述透光孔的密度自中间向两端逐渐增大。
  6. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜与所述透光膜的材质均为涤纶树脂。
  7. 根据权利要求6所述的Mini LED模组，其中，所述反射透镜与所述透光膜一体成型。
  8. 根据权利要求1所述的Mini LED模组，其中，所述Mini LED模组还包括PCB板和背板；
    所述PCB板设有多块，各所述PCB板均相互拼接设置在所述反射片的下方，所述发光二极管设置在对应的所述PCB板上，且各所述发光二极管的顶端均向外超出所述反射片。
  9. 根据权利要求8所述的Mini LED模组，其中，任意相邻两所述PCB板的拼接处的顶端均被所述散光部覆盖。
  10. 根据权利要求8所述的Mini LED模组，其中，所述背板呈凹槽状，所述PCB板安装在所述背板形成的凹槽内。
  11. 根据权利要求10所述的Mini LED模组，其中，所述Mini LED模块还包括：
    扩散板，所述扩散板盖设在所述背板上方，以封闭所述背板形成的所述凹槽；
    膜片，所述膜片为多层薄膜结构并贴合在所述扩散板上。
  12. 根据权利要求5所述的Mini LED模组，其中，所述透光孔的密度通过所述透光孔的数量来实现，在两所述反射透镜之间的中间区域设置数量较少的所述透光孔，从中间区域朝两端所述透光孔的数量逐渐增多。
  13. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜与所述透光膜的材质为聚苯乙烯或聚碳酸酯。
  14. 根据权利要求1所述的Mini LED模组，其中，所述反射透镜的周向为光滑面，以使所述反射透镜上表面向下反射的光沿所述反射透镜的周向折射出去，所述周向是所述反射透镜周侧的圆弧面。
  15. 一种显示设备，其中，包括如权利要求1-14任一项所述的Mini LED模组。
PCT/CN2022/111780 2022-02-17 2022-08-11 Mini LED模组及其显示设备 WO2023155392A1 (zh)

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