WO2022141479A1 - 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
WO2022141479A1
WO2022141479A1 PCT/CN2020/142337 CN2020142337W WO2022141479A1 WO 2022141479 A1 WO2022141479 A1 WO 2022141479A1 CN 2020142337 W CN2020142337 W CN 2020142337W WO 2022141479 A1 WO2022141479 A1 WO 2022141479A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
backlight module
panels
display device
mounting surface
Prior art date
Application number
PCT/CN2020/142337
Other languages
English (en)
French (fr)
Inventor
周政
宋岁忙
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US17/267,787 priority Critical patent/US11841580B2/en
Publication of WO2022141479A1 publication Critical patent/WO2022141479A1/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
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Definitions

  • the present application relates to the field of display technology, and in particular, to a backlight module and a display device.
  • the light boards of the sub-millimeter light-emitting diode backlight modules usually adopt splicing light boards, that is, multiple light boards are spliced into a whole lamp. board as a backlight. Due to the limitation of the light path propagation path of the direct-type backlight, when the large-sized sub-millimeter light-emitting diode backlight module adopts the panel design, the processing of the seam generated by the splicing between the two adjacent lamp panels is currently encountered. A problem is that due to the existence of the splicing seam, the light of the direct-type backlight at the splicing position is relatively dark, and the product optically appears as a dark shadow or dark area, which affects the visual effect.
  • the purpose of the present application is to provide a backlight module and a display device to improve the problem of shadows or dark areas caused by splicing seams during splicing of light panels.
  • a backlight module comprising:
  • the reflector is arranged corresponding to the splicing seam of two adjacent lamp panels.
  • one end of the reflector away from the lamp board has a convex curved surface.
  • a portion of the light-reflecting member is located above the two adjacent light panels.
  • each of the lamp panels has a mounting surface
  • each of the lamp panels includes:
  • the distance between the end of the reflector away from the light panel and the mounting surface is less than or equal to 0.5 mm and greater than 0 mm.
  • the backlight module further includes:
  • a backplane a plurality of the light panels are arranged on the backplane;
  • the connecting piece is arranged at the splicing seam between two adjacent light panels, and connects the reflective piece and the back panel.
  • the connector, the reflector and the back plate are enclosed to form a card slot, and one end of the two adjacent lamp boards close to the connector is clamped in the card slot.
  • each of the lamp panels has a mounting surface
  • each of the lamp panels includes:
  • a plurality of light-emitting elements which are fixed on the mounting surface of each of the light panels; wherein, the distance from the end of the reflecting member connected to the connecting member to the mounting surface is 0.15 mm -0.25mm.
  • the backlight module further includes:
  • An inner plastic frame is arranged on the lamp board, and the reflective member is connected with the inner plastic frame.
  • the inner plastic frame has a first stepped surface and a second stepped surface, the second stepped surface is located on a side of the first stepped surface away from the lamp board, and the backlight mold
  • the group also includes:
  • a diffuser plate arranged on the first step surface
  • the optical film is arranged on the second step surface.
  • a display device comprising the above-mentioned backlight module and a liquid crystal display panel, wherein the liquid crystal display panel is located on the light-emitting side of the backlight module.
  • the present application provides a backlight module and a display device.
  • the backlight module includes: a plurality of lamp panels spliced with each other; and a reflector, which is disposed corresponding to the splicing seam of two adjacent lamp panels.
  • FIG. 1 is a schematic diagram of a display device according to a first embodiment of the application
  • FIG. 2 is a schematic plan view of the reflective member shown in FIG. 1 being connected to the back panel;
  • Fig. 3 is a partial enlarged schematic view of the display device shown in Fig. 1;
  • FIG. 4 is a schematic diagram of a display device according to a second embodiment of the present application.
  • FIG. 5 is a schematic plan view of the reflective member shown in FIG. 4 connected to the inner plastic frame.
  • FIG. 1 is a schematic cross-sectional view of the display device according to the first embodiment of the present application
  • FIG. 2 is a schematic plan view of the reflective member shown in FIG. 1 connected to the back panel
  • FIG. 3 is the display shown in FIG. 1 A partial enlarged schematic view of the device.
  • the display device 300 includes a backlight module 10 and a liquid crystal display panel 20 .
  • the display device 300 may be applied to a vehicle display or a television set.
  • the liquid crystal display panel 20 is located on the light-emitting side of the backlight module 10.
  • the backlight module 10 is used to provide a backlight source for the liquid crystal display panel 20.
  • the liquid crystal display panel 20 receives the backlight and controls the transmittance of the backlight, thereby displaying images of different gray scales.
  • the liquid crystal display panel 20 includes an array substrate, a color filter substrate, and a liquid crystal layer between the array substrate and the color filter substrate.
  • the backlight module 10 includes a backplane 101 , a plurality of lamp panels 103 , an inner plastic frame 105 , a diffuser plate 107 , an optical film 109 , an outer plastic frame 111 and a reflector 113 .
  • the back plate 101 includes a bottom plate 1011 and four side plates 1012 disposed around the bottom plate 1011 , and the bottom plate 1011 and the four side plates 1012 enclose a accommodating cavity 101 a.
  • the preparation material of the back plate 101 is aluminum alloy or plastic.
  • a plurality of light panels 103 are spliced with each other to provide a large-sized surface light source.
  • a plurality of light panels 103 are disposed in the accommodating cavity 101 a of the back panel 101 and on the bottom panel 1011 .
  • Each light board 103 includes a printed circuit board (Printed Circuit Board, PCB) 1031 and a plurality of light emitting elements 1032 arranged on the printed circuit board 1031 in an array.
  • the printed circuit board 1031 has a mounting surface 1031 a, and each light emitting element 1032 is fixed on the mounting surface 1031 a of the printed circuit board 1031 .
  • the light-emitting element 1032 and the printed circuit board 1031 can be connected by solder paste or conductive glue.
  • a reflective layer (not shown) is provided on the mounting surface 1031a of the printed circuit board 1031 to reflect light and improve the utilization rate of light.
  • the light-emitting element 1032 is a sub-millimeter light-emitting diode. It can be understood that the light emitting element 1032 can also be a micro light emitting diode (Micro-LED) or other light emitting elements.
  • the reflector 113 is disposed corresponding to the seam 103a of the two adjacent lamp panels 103, and the light at the seam 103a is reflected by the reflector 113, so as to improve the brightness at the seam 103a and improve the Shadow or dark area problem at seam 103a.
  • the reflector 113 can be made of transparent plastic to avoid blocking light.
  • the end of the reflector 113 away from the lamp board 103 has a convex arc-shaped curved surface 113a.
  • the light has a better reflective effect; on the other hand, the end of the reflector 113 away from the lamp board 103 is a cube, the light-emitting element 1032 emits light within a specific angle range, and the convex curved surface can avoid the light-emitting element.
  • the light emitted by 1032 to the seam 103a causes occlusion.
  • one end of the reflector 113 away from the lamp panel 103 has a convex arc-shaped curved surface.
  • the end of the reflector 113 away from the light panel 103 may also have a convex elliptical arc curved surface.
  • the part of the reflective member 113 is located above the two adjacent lamp panels 103 , that is, the width D1 of the reflective member 113 is greater than the width of the splicing seam 103a of the two adjacent lamp panels 103 , so that the reflective member 113 The seam 103a is completely masked.
  • the width D1 of the reflective member 113 is 0.4 mm-0.6 mm, for example, the width D1 of the reflective member 113 may be 0.5 mm.
  • the distance H1 between the end of the reflector 113 away from the lamp board 103 and the mounting surface 1031a is less than or equal to 0.5 mm and greater than 0 mm, so as to prevent the height of the reflector 113 from being too high and causing the light-emitting element 1032 to emit light. The light is blocked, so that the light emitted by the light emitting element 1032 cannot reach the seam 103a.
  • the spacing H1 may be 0.4 mm, 0.3 mm or 0.2 mm.
  • the backlight module 10 further includes a connecting piece 115 , the connecting piece 115 is disposed at the splicing seam 103 a between two adjacent lamp panels 103 , and the connecting piece 115 connects the reflective piece 113 and the back plate 101 ,
  • the reflective member 113 is connected to the back plate 101 to stabilize the reflective member 113 and prevent the reflective member 113 from moving.
  • the shape of the connecting piece 115 is a cube, and the connecting piece 115 may be made of plastic.
  • the connecting member 115 and the reflective member 113 may be integrally formed.
  • the width D2 of the connecting piece 115 is greater than 0 and less than or equal to 0.3 mm, which is more conducive to reducing the distance between adjacent light-emitting elements 1032 located on two adjacent light panels 103 respectively.
  • the width of the connector 115 is 0.1 mm.
  • the connecting member 115 , the reflecting member 113 and the back plate 101 are enclosed to form a card slot 101 a , and one end of the two adjacent lamp panels 103 close to the connecting member 115 is clamped in the card slot 101 a to avoid the occurrence of the lamp panel 103 .
  • the width D3 of the slot 101a is greater than or equal to 0.2 mm and smaller than the width of the reflector 113, so that the light board 103 is clamped in the slot 101a, and the reflector 113 is beneficial to shield the edge of the light board 103 close to the splicing seam.
  • the distance H2 between the end of the reflecting member 113 connected to the connecting member 115 and the mounting surface 1031a is 0.15mm-0.25mm, so as to reserve some space for the light board 103 to be snapped into the slot 101a.
  • the distance H2 from one end of the reflecting member 113 connected to the connecting member 115 to the mounting surface 1031a is 0.2 mm.
  • the inner plastic frame 105 is located in the accommodating cavity 101 a and is disposed on the peripheral edges of the plurality of light panels 103 .
  • the inner plastic frame 105 has a first stepped surface 1051, a second stepped surface 1052, a connecting surface 1053 and an inclined surface 1054.
  • the second stepped surface 1052 is located on the side of the first stepped surface 1051 away from the plurality of light panels 103, and the connecting surface 1053 is connected to Between the first stepped surface 1051 and the second stepped surface 1052, the connecting surface 1053 is parallel to the side plate 1012 of the back plate 101, the first stepped surface 1051 and the second stepped surface 1052 are parallel to the bottom plate 1011 of the back plate 101, and the inclined surface is 1054 is connected to the first stepped surface 1051, and the included angle between the inclined surface 1054 and the first stepped surface 1051 is an obtuse angle.
  • the inclined surface 1054 reflects light energy.
  • the inner rubber frame 105 is made of plastic.
  • the diffusion plate 107 is disposed on the first stepped surface 1051
  • the optical film 109 is disposed on the second stepped surface 1052 .
  • the diffuser plate 107 is used to scatter the light emitted from the plurality of light emitting elements 1032 .
  • Optical film 109 includes, but is not limited to, enhancement films.
  • the outer plastic frame 111 is disposed on the back plate 101 , and the outer plastic frame 111 is fixed on the side plate 1012 of the back plate 101 .
  • the outer rubber frame 111 is provided with a stepped surface, and the liquid crystal display panel 20 is fixed on the outer rubber frame 111 by double-sided tape.
  • the outer plastic frame 111 can be made of plastic or metal.
  • a reflective member is arranged at the splicing seam of two adjacent light panels, so as to improve the utilization rate of light at the splicing seam, thereby improving the brightness at the splicing seam.
  • FIG. 4 is a schematic diagram of a display device according to a second embodiment of the present application
  • FIG. 5 is a schematic plan view of the reflective member shown in FIG. 4 connected to the inner plastic frame.
  • the display device shown in FIG. 4 is basically similar to the display device shown in FIG. 1 , and a reflective member 113 is correspondingly provided at the splicing seam 103a of the two adjacent light panels 103 , and the reflective member 113 is located near the splicing of the two adjacent lamp panels 103 .
  • the difference on the edge of the seam 103a is that the reflective member 113 is connected to the inner plastic frame 105, and the reflective member 113 serves as a beam of the inner plastic frame 105 to cover the seam 103a between the adjacent lamp panels 103.
  • the display device of the embodiment of the present application is connected to the inner plastic frame through a reflective member, so that the reflective member reflects the light at the seam, improves the brightness at the seam, and further improves the problem of dark lines or dark areas at the seam At the same time, avoid the displacement of the reflector.
  • the reflector is arranged on the edges of two adjacent lamp panels close to the splicing seam, which can prevent the lamp panels from moving.

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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)
  • Liquid Crystal (AREA)

Abstract

本申请提供一种背光模组及显示装置，背光模组包括：多个相互拼接的灯板；反光件，对应相邻两个灯板的拼接缝设置。通过在相邻两个灯板的拼接缝处设置反光件，以提升光在拼接缝处的反射效果，改善拼接缝处的暗影问题。

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
目前，针对车载大尺寸的次毫米发光二极体（mini-LED）背光模组，次毫米发光二极体背光模组的灯板通常采用拼接灯板，即多块灯板拼接成一整块灯板以作为背光源。由于受到直下式背光源的光路传播路径限制，大尺寸次毫米发光二极体背光模组采用拼板设计时，相邻两块灯板之间拼接产生的拼接缝的处理是目前遇到的一项难题，由于拼接缝的存在，直下式背光源在拼接位置的光线较暗，在产品光学上表现为暗影或者暗区，影响视觉效果。
因此，有必要提出一种技术方案以改善灯板拼接时拼接缝造成的暗影或暗区问题。
 技术问题
本申请的目的在于提供一种背光模组及显示装置，以改善灯板拼接时拼接缝造成的暗影或暗区问题。
 技术解决方案
一种背光模组，所述背光模组包括：
多个相互拼接的灯板；以及
反光件，对应相邻两个所述灯板的拼接缝设置。
在上述的背光模组中，所述反光件远离所述灯板的一端具有凸起的弧形曲面。
在上述的背光模组中，所述反光件的部分位于相邻两个所述灯板的上方。
在上述的背光模组中，每个所述灯板具有安装面，每个所述灯板包括：
多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；
其中，所述反光件远离所述灯板的一端与所述安装面之间的间距小于或等于0.5毫米且大于0毫米。
在上述的背光模组中，所述背光模组还包括：
背板，所述背板上设置有多个所述灯板；以及
连接件，设置于相邻两个所述灯板之间的拼接缝处，且连接所述反光件和所述背板。
在上述的背光模组中，所述连接件、所述反光件以及所述背板围合成卡槽，相邻两个所述灯板靠近所述连接件的一端卡接于所述卡槽中。
在上述的背光模组中，每个所述灯板具有安装面，每个所述灯板包括：
多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；其中，所述反光件与所述连接件连接的一端至所述安装面的间距为0.15毫米-0.25毫米。
在上述的背光模组中，所述背光模组还包括：
内胶框，所述内胶框设置于所述灯板上，且所述反光件与所述内胶框连接。
在上述的背光模组中，所述内胶框具有第一台阶面和第二台阶面，所述第二台阶面位于所述第一台阶面远离所述灯板的一侧，所述背光模组还包括：
扩散板，设置于所述第一台阶面上；
光学膜片，设置于所述第二台阶面上。
一种显示装置，所述显示装置包括上述背光模组及液晶显示面板，所述液晶显示面板位于所述背光模组的出光侧。
 有益效果
本申请提供一种背光模组及显示装置，背光模组包括：多个相互拼接的灯板；反光件，对应相邻两个灯板的拼接缝设置。通过在相邻两个灯板的拼接缝处设置反光件，以提升光在拼接缝处的反射效果，改善拼接缝处的暗影问题。
 附图说明
图1为本申请第一实施例的显示装置的示意图；
图2为图1所示反光件连接于背板上的平面示意图；
图3为图1所示显示装置的局部放大示意图；
图4为本申请第二实施例的显示装置的示意图；
图5为图4所示反光件连接于内胶框的平面示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
第一实施例
请参阅图1-图3，图1为本申请第一实施例的显示装置的截面示意图，图2为图1所示反光件连接于背板上的平面示意图，图3为图1所示显示装置的局部放大示意图。显示装置300包括背光模组10以及液晶显示面板20。显示装置300可以应用于车载显示或者电视机等。液晶显示面板20位于背光模组10的出光侧，背光模组10用于为液晶显示面板20提供背光源，液晶显示面板20接收背光且控制背光的透过率，从而显示不同灰阶的画面。
在本实施例中，液晶显示面板20包括阵列基板、彩膜基板以及位于阵列基板和彩膜基板之间的液晶层。
在本实施例中，背光模组10包括背板101、多个灯板103、内胶框105、扩散板107、光学膜片109、外胶框111以及反光件113。
在本实施例中，背板101包括底板1011以及环绕底板1011设置的四个侧板1012，底板1011以及四个侧板1012围合成容置腔101a。背板101的制备材料为铝合金或塑料。
在本实施例中，多个灯板103相互拼接，以提供大尺寸的面光源。多个灯板103设置于背板101的容置腔101a中且位于底板1011上。每个灯板103包括印刷电路板（Printed Circuit Board，PCB）1031以及多个阵列设置于印刷电路板1031上的发光元件1032。印刷电路板1031具有安装面1031a，每个发光元件1032固定于印刷电路板1031的安装面1031a上。发光元件1032与印刷电路板1031之间可以通过锡膏连接，也可以通过导电胶连接。印刷电路板1031的安装面1031a上设置有反射层(未示出)，以起到反射光的作用，提高光的利用率。发光元件1032为次毫米发光二极管。可以理解的是，发光元件1032也可以为微型发光二极管（Micro-LED）或者其他发光元件。
在本实施例中，反光件113对应相邻两个灯板103的拼接缝103a设置，通过反光件113对拼接缝103a处的光进行反射，以提高拼接缝103a处的亮度，改善拼接缝103a处的暗影或暗区问题。反光件113可以由透明塑料制成，避免对光造成遮挡。
反光件113远离灯板103的一端具有凸起的弧形曲面113a，一方面，相对于反光件113远离灯板103的一端为立方体，具有凸起的弧形曲面可以对拼接缝103a处的光具有更好的反光效果；另一方面，相对于反光件113远离灯板103的一端为立方体，发光元件1032在特定的角度范围内发出光，具有凸起的弧形曲面可以避免对发光元件1032发出至拼接缝103a处的光造成遮挡。具体地，在本实施例中，反光件113远离灯板103的一端具有凸起的圆弧形曲面。在其他实施例中，反光件113远离灯板103的一端也可以具有凸起的椭圆弧形曲面。
在本实施例中，反光件113的部分位于相邻两个灯板103的上方，即反光件113的宽度D1大于相邻两个灯板103的拼接缝103a的宽度，以使反光件113完全遮蔽拼接缝103a。具体地，如图3所示，反光件113的宽度D1为0.4毫米-0.6毫米，例如，反光件113的宽度D1可以为0.5毫米。
在本实施例中，反光件113远离灯板103的一端与安装面1031a之间的间距H1小于或等于0.5毫米且大于0毫米，以避免反光件113的高度太高而对发光元件1032发出的光造成遮挡，导致发光元件1032发出的光无法到达拼接缝103a处。例如间距H1可以为0.4毫米、0.3毫米或者0.2毫米。
在本实施例中，背光模组10还包括连接件115，连接件115设置于相邻两个灯板103之间的拼接缝103a处，且连接件115连接反光件113和背板101，反光件113与背板101连接使反光件113稳定，避免反光件113移动。连接件115的形状为立方体，连接件115可以由塑料组成。连接件115与反光件113可以一体化成型。连接件115的宽度D2大于0且小于或等于0.3毫米，更有利于减小分别位于相邻两个灯板103上的相邻发光元件1032之间的间距。例如连接件115的宽度为0.1毫米。
在本实施例中，连接件115、反光件113及背板101围合成卡槽101a，相邻两个灯板103靠近连接件115的一端卡接于卡槽101a中，以避免灯板103发生明显的位移。卡槽101a的宽度D3大于或等于0.2毫米且小于反光件113的宽度，使得灯板103卡接于卡槽101a中的同时，有利于反光件113遮蔽灯板103靠近拼接缝的边缘。
进一步地，反光件113与连接件115连接的一端至安装面1031a的间距H2为0.15毫米-0.25毫米，以预留部分空间方便灯板103卡接至卡槽101a中。例如，反光件113与连接件115连接的一端至安装面1031a的间距H2为0.2毫米。
在本实施例中，内胶框105位于容置腔101a内且设置于多个灯板103的***边缘上。内胶框105具有第一台阶面1051、第二台阶面1052、连接面1053以及倾斜面1054，第二台阶面1052位于第一台阶面1051远离多个灯板103的一侧，连接面1053连接于第一台阶面1051和第二台阶面1052之间，连接面1053与背板101的侧板1012平行，第一台阶面1051和第二台阶面1052与背板101的底板1011平行，倾斜面1054与第一台阶面1051连接，倾斜面1054与第一台阶面1051之间的夹角为钝角。倾斜面1054对光能起到反射。内胶框105由塑料制得。
在本实施例中，扩散板107设置于第一台阶面1051上，光学膜片109设置于第二台阶面1052上。扩散板107用于对多个发光元件1032发出的光进行散射。光学膜片109包括但不限于增光膜。
在本实施例中，外胶框111设置于背板101上，外胶框111固定于背板101的侧板1012上。外胶框111上设置有台阶面，液晶显示面板20通过双面胶固定于外胶框111上。外胶框111可以由塑料或者金属制备得到。
本申请显示装置通过在相邻两个灯板的拼接缝处设置反光件，以提高光在拼接缝处的利用率，进而提高拼接缝处的亮度。
第二实施例
如图4及图5所示，图4为本申请第二实施例显示装置的示意图，图5为图4所示反光件连接于内胶框的平面示意图。图4所示显示装置与图1所示显示装置基本相似，在相邻两个灯板103的拼接缝103a处对应设置反光件113，且反光件113位于相邻两个灯板103靠近拼接缝103a的边缘上，不同之处在于，反光件113与内胶框105连接，反光件113作为内胶框105的梁覆盖相邻灯板103之间的拼接缝103a。
本申请实施例显示装置通过反光件与内胶框连接，以使反光件对拼接缝处的光进行反射，提高拼接缝处的亮度，进而改善拼接缝处的暗纹或暗区问题的同时，避免反光件发生位移。另外，反光件设置于相邻两个灯板靠近拼接缝的边缘上，可以避免灯板发生移动。
以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (18)

  1. 一种背光模组，其中，所述背光模组包括：
    多个相互拼接的灯板；以及
    反光件，对应相邻两个所述灯板的拼接缝设置。
  2. 根据权利要求1所述的背光模组，其中，所述反光件远离所述灯板的一端具有凸起的弧形曲面。
  3. 根据权利要求1所述的背光模组，其中，所述反光件的部分位于相邻两个所述灯板的上方。
  4. 根据权利要求1所述的背光模组，其中，每个所述灯板具有安装面，每个所述灯板包括：
    多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；
    其中，所述反光件远离所述灯板的一端与所述安装面之间的间距小于或等于0.5毫米且大于0毫米。
  5. 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：
    背板，所述背板上设置有多个所述灯板；以及
    连接件，设置于相邻两个所述灯板之间的拼接缝处，且连接所述反光件和所述背板。
  6. 根据权利要求5所述的背光模组，其中，所述连接件、所述反光件以及所述背板围合成卡槽，相邻两个所述灯板靠近所述连接件的一端卡接于所述卡槽中。
  7. 根据权利要求5所述的背光模组，其中，每个所述灯板具有安装面，每个所述灯板包括：
    多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；其中，所述反光件与所述连接件连接的一端至所述安装面的间距为0.15毫米-0.25毫米。
  8. 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：
    内胶框，所述内胶框设置于所述灯板上，且所述反光件与所述内胶框连接。
  9. 根据权利要求8所述的背光模组，其中，所述内胶框具有第一台阶面和第二台阶面，所述第二台阶面位于所述第一台阶面远离所述灯板的一侧，所述背光模组还包括：
    扩散板，设置于所述第一台阶面上；
    光学膜片，设置于所述第二台阶面上。
  10. 一种显示装置，其中，所述显示装置包括背光模组及液晶显示面板，所述液晶显示面板位于所述背光模组的出光侧，所述背光模组包括：
    多个相互拼接的灯板；以及
    反光件，对应相邻两个所述灯板的拼接缝设置。
  11. 根据权利要求10所述的显示装置，其中，所述反光件远离所述灯板的一端具有凸起的弧形曲面。
  12. 根据权利要求10所述的显示装置，其中，所述反光件的部分位于相邻两个所述灯板的上方。
  13. 根据权利要求10所述的显示装置，其中，每个所述灯板具有安装面，每个所述灯板包括：
    多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；
    其中，所述反光件远离所述灯板的一端与所述安装面之间的间距小于或等于0.5毫米且大于0毫米。
  14. 根据权利要求10所述的显示装置，其中，所述背光模组还包括：
    背板，所述背板上设置有多个所述灯板；以及
    连接件，设置于相邻两个所述灯板之间的拼接缝处，且连接所述反光件和所述背板。
  15. 根据权利要求14所述的显示装置，其中，所述连接件、所述反光件以及所述背板围合成卡槽，相邻两个所述灯板靠近所述连接件的一端卡接于所述卡槽中。
  16. 根据权利要求14所述的显示装置，其中，每个所述灯板具有安装面，每个所述灯板包括：
    多个发光元件，多个所述发光元件固定于每个所述灯板的所述安装面上；
    其中，所述反光件与所述连接件连接的一端至所述安装面的间距为0.15毫米-0.25毫米。
  17. 根据权利要求10所述的显示装置，其中，所述背光模组还包括：
    内胶框，所述内胶框设置于所述灯板上，且所述反光件与所述内胶框连接。
  18. 根据权利要求17所述的显示装置，其中，所述内胶框具有第一台阶面和第二台阶面，所述第二台阶面位于所述第一台阶面远离所述灯板的一侧，所述背光模组还包括：
    扩散板，设置于所述第一台阶面上；
    光学膜片，设置于所述第二台阶面上。
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