WO2021068434A1 - 背光模组、显示装置及背光模组的制作方法 - Google Patents

背光模组、显示装置及背光模组的制作方法 Download PDF

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Publication number
WO2021068434A1
WO2021068434A1 PCT/CN2020/070213 CN2020070213W WO2021068434A1 WO 2021068434 A1 WO2021068434 A1 WO 2021068434A1 CN 2020070213 W CN2020070213 W CN 2020070213W WO 2021068434 A1 WO2021068434 A1 WO 2021068434A1
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WIPO (PCT)
Prior art keywords
backlight module
back plate
perforation
light
optical film
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PCT/CN2020/070213
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English (en)
French (fr)
Inventor
张巍
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武汉华星光电技术有限公司
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Publication of WO2021068434A1 publication Critical patent/WO2021068434A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present invention relates to the field of display, and in particular to a manufacturing method of a backlight module, a display device and a backlight module.
  • the existing display device includes a backlight module and a display device which are arranged oppositely.
  • the conventional structure of the backlight module includes two kinds of pure iron frame, namely the back plate stamping and bending, and the integrated structure of glue-iron.
  • the diameter of the perforation designed in the backlight module for placing the camera also needs to be simultaneously reduced to achieve a smaller area occupied by the perforation.
  • the perforation is formed by punching and bending the back plate that constitutes the backlight module; if the backlight module is a plastic-iron integrated structure, the frame glue and the back plate must be bonded to form an integral perforation .
  • the diameter of the inner hole of the perforation cannot be compressed because it must match the existing mass-produced cameras. Therefore, the outer diameter of the perforation is getting smaller and smaller. In this way, the area of the perforation becomes smaller. It can be seen that the distance between the diameter of the outer hole of the perforation and the diameter of the inner hole is getting smaller and smaller, only 0.1mm.
  • the backlight module 90 includes a back plate 91, a reflective sheet 92, a light guide plate 93, an optical film group 94, and a mouth-shaped light-shielding glue 95.
  • the back plate 91 is bent to form a perforation 96.
  • the lower surface of the square-shaped light-shielding glue 95 is partially attached to the upper surface of the side wall of the perforation 96, and the other portion is attached to the upper surface of the optical film set 94. Play a shading effect.
  • the purpose of the present invention is to provide a backlight module, a display device and a manufacturing method of the backlight module, which solves the technical problem of light leakage caused by the rising of the chevron-shaped light-shielding glue attached to the perforation of the backlight module.
  • the present invention provides a backlight module, which includes a back plate, a reflective sheet, a light guide plate, an optical film set, and a light-shielding glue.
  • the reflective sheet is provided on the back plate;
  • the light guide plate is provided on the reflective sheet;
  • the optical film is assembled on the light guide plate;
  • the backlight module is provided with perforations , The perforation sequentially penetrates the back plate, the reflective sheet, the light guide plate and the optical film set;
  • the light-shielding glue includes an upper bonding part and a side bonding part;
  • the upper bonding part A part of the lower surface is attached to the upper surface of the optical film set, and the other part is attached to the upper surface of the perforated side wall;
  • the side bonding part is attached to the inner side of the perforated side wall.
  • the upper affixing part is annularly arranged around the perforation in the radial direction.
  • the length of the side bonding part is 0.1mm-0.2mm.
  • the upper bonding part and the side bonding part are integrally formed.
  • the backlight module further includes a side back plate, the side back plate is arranged perpendicular to the back plate, and the side back plate is connected with the back plate to form the perforated side wall.
  • the material of the back plate and the side back plate includes any one of iron, aluminum, copper, stainless steel, aluminum alloy, hard plastic or injection molding gel.
  • the optical film set includes a diffusion sheet, a lower brightness enhancement sheet and an upper brightness enhancement sheet.
  • the diffusion sheet is provided on the light guide plate; the lower brightness enhancement sheet is provided on the diffusion sheet; the upper brightness enhancement sheet is provided on the lower brightness enhancement sheet.
  • the present invention also provides a manufacturing method of the backlight module, which includes the following steps:
  • An optical film set is fabricated on the light guide plate; wherein the backlight module is also provided with a perforation, the perforation sequentially penetrates the back plate, the reflective sheet, the light guide plate and the optical film set ;as well as
  • a light-shielding glue is provided, the light-shielding glue includes an upper bonding part and a side bonding part; a part of the lower surface of the upper bonding part is attached to the upper surface of the optical film set, and the other part is attached to the upper surface of the optical film set.
  • the upper surface of the side wall of the perforation; and the side attachment portion is attached to the inner side of the side wall of the perforation.
  • the present invention also provides a display device including the above-mentioned backlight module.
  • the display device further includes a lower polarizer, an array substrate, a color filter substrate, and an upper polarizer.
  • the lower polarizer is provided on the backlight module; the array substrate is provided on the lower polarizer; the color filter substrate is provided on the array substrate; the upper polarizer is provided on the On the color filter substrate; wherein the lower polarizer and the upper polarizer are provided with light-transmitting holes or transparent areas at positions corresponding to the perforations.
  • the beneficial effect of the present invention is to provide a backlight module, a display device, and a manufacturing method of the backlight module.
  • a light-shielding glue to cover the perforations of the backlight module, the attachment area of the light-shielding glue is increased.
  • the light-shielding glue is more firmly attached to the upper surface and the inner side of the side wall of the perforation, which prevents light leakage caused by the warp of the light-shielding glue, and greatly reduces the light leakage phenomenon of the backlight module.
  • FIG. 1 is a schematic diagram of the structure of a conventional backlight module
  • FIG. 2 is a schematic diagram of the structure of a backlight module in an embodiment of the present invention.
  • Figure 3 is a top view of the light-shielding glue in an embodiment of the present invention.
  • FIG. 4 is a flowchart of a manufacturing method of a backlight module in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the structure of a display device in an embodiment of the present invention.
  • a backlight module 10 which includes a back plate 1, a reflective sheet 2, a light guide plate 3, an optical film set 4 and a light-shielding glue 5.
  • the material of the back plate 1 includes any one of iron, aluminum, copper, stainless steel, aluminum alloy, hard plastic or injection molded colloid, preferably iron.
  • the reflective sheet 2 is arranged on the back plate 1, and the back plate 1 plays a supporting role; the reflective sheet 2 is used to reflect light and has good light reflection performance.
  • the light guide plate 3 is arranged on the reflective sheet 2, and the light guide plate 3 uses an optical grade acrylic sheet to absorb the light emitted from the light source and stay on the surface of the optical grade acrylic sheet.
  • the reflected light will diffuse to various angles, and then destroy the reflection condition and exit from the front of the light guide plate 3, and the light guide plate 3 can emit light uniformly through various dense and different light guide points.
  • the optical film set 4 is arranged on the light guide plate 3, and the optical film set 4 is used to enhance the brightness and uniformity of the light source; wherein, the backlight module 10 is also provided with a perforation 6, the perforation 6 penetrates the back plate 1, the reflective sheet 2, the light guide plate 3 and the optical film group 4 in sequence.
  • the light-shielding glue 5 includes an upper bonding portion 51 and a side bonding portion 52.
  • a part of the lower surface of the upper bonding portion 51 is attached to the upper surface of the optical film set 4, and the other part is attached to the upper surface of the side wall of the perforation 6, so that the arrangement can make the upper bonding
  • the portion 51 shields the light on one side of the light guide plate 3 to avoid light leakage;
  • the side bonding portion 52 is attached to the inner side of the side wall of the perforation 6, that is, the inner wall of the perforation 6, and the side is attached
  • the purpose of the portion 52 is to increase the attaching area of the light-shielding glue 5 and prevent the light-shielding glue 5 from lifting up and causing light leakage.
  • the above method of this embodiment can be understood as the shading glue 5 is sleeved in the perforation 6, which increases the attachment area of the shading glue 5, making the shading glue 5 stronger It is attached to the upper surface and the inner side of the side wall of the through hole 6 to prevent the light leakage of the light-shielding glue 5 from being lifted up, and greatly reduce the light leakage of the backlight module 10.
  • the upper affixing portion 51 is annularly arranged around the perforation 6 in the radial direction.
  • the length of the side bonding portion 52 is 0.1 mm-0.2 mm, preferably 0.15 mm.
  • the upper bonding portion 51 and the side bonding portion 52 are integrally formed.
  • the shape and size of the shading glue 5 are adapted to the shape and size of the perforation 6. That is, the cross-sections of the light-shielding glue 5 and the perforation 6 are both circular, rectangular or polygonal. In this embodiment, it is preferable that the cross-sections of the light-shielding glue 5 and the perforation 6 are both circular.
  • the backlight module 10 further includes a side back plate 7, the side back plate 7 is arranged perpendicular to the back plate 1, and the side back plate 7 is connected to the back plate 1 to form the Perforation 6 in the side wall.
  • the side back plate 7 and the back plate 1 are integrally formed, and the manufacturing method includes stamping or injection molding.
  • the material of the back plate 1 and the side back plate 7 includes any one of iron, aluminum, copper, stainless steel, aluminum alloy, hard plastic, or injection molding gel.
  • the material of the side back plate 7 is the same as the material of the back plate 1. That is to say, the structure of the backlight module 10 includes two structures of a pure iron frame, that is, a back plate stamped and bent, and an integrated glue-iron frame.
  • the optical film set 4 includes a diffusion sheet 41, a lower brightness enhancement sheet 42 and an upper brightness enhancement sheet 43.
  • the diffusion sheet 41 is provided on the light guide plate 3; the lower brightness enhancement sheet 42 is provided on the diffusion sheet 41; the upper brightness enhancement sheet 43 is provided on the lower brightness enhancement sheet 42.
  • the optical film set 4 is used to enhance the brightness and uniformity of the light source.
  • the diffusion sheet 41 can enhance the brightness of the light source.
  • the lower brightness enhancement sheet 42 diffuses light to provide a uniform surface light source.
  • the upper brightness enhancement sheet 43 can also enhance the brightness of the light source.
  • the light-emitting effect of the backlight module 10 will directly affect its visual effect.
  • the present invention also provides a manufacturing method of the backlight module 10, including the following steps S1-S5:
  • a back plate 1 is provided, and the material of the back plate 1 includes any one of iron, aluminum, copper, stainless steel, aluminum alloy, hard plastic or injection molding colloid, preferably iron;
  • the light-shielding glue 5 includes an upper bonding portion 51 and a side bonding portion 52; a part of the lower surface of the upper bonding portion 51 is attached to the upper surface of the optical film assembly 4 On the surface, the other part is attached to the upper surface of the side wall of the perforation 6; and the side attaching part 52 is attached to the inner side of the side wall of the perforation 6.
  • the present invention also provides a display device 100 including the above-mentioned backlight module 10.
  • the display device 100 in this embodiment may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • the working principle of the display device 100 provided in this embodiment is consistent with the working principle of the embodiment of the backlight module 10.
  • the embodiment of the backlight module 10 please refer to the embodiment of the backlight module 10, which will not be repeated here.
  • the display device 100 further includes a lower polarizer 20, an array substrate 30, a color filter substrate 40, and an upper polarizer 50.
  • the lower polarizer 20 is provided on the backlight module 10; the array substrate 30 is provided on the lower polarizer 20; the color filter substrate 40 is provided on the array substrate 30;
  • the upper polarizer 50 is disposed on the color filter substrate 40; wherein, the lower polarizer 20 and the upper polarizer 50 are provided with light-transmitting holes or transparent areas at positions corresponding to the perforations 6.
  • the beneficial effect of the present invention is to provide a backlight module, a display device, and a manufacturing method of the backlight module.
  • a light-shielding glue to cover the perforations of the backlight module, the attachment area of the light-shielding glue is increased.
  • the light-shielding glue is more firmly attached to the upper surface and the inner side of the side wall of the perforation, which prevents light leakage caused by the warp of the light-shielding glue, and greatly reduces the light leakage phenomenon of the backlight module.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种背光模组(10)、显示装置(100)及背光模组(10)的制作方法。显示装置(100)包括背光模组(10)，背光模组(10)包括背板(1)、反射片(2)、导光板(3)、光学膜片组(4)以及遮光胶(5)；遮光胶(5)包括上贴合部(51)和侧贴合部(52)；上贴合部(51)的下表面部分贴附于光学膜片组(4)的上表面，另一部分贴附于穿孔(6)的侧壁的上表面；侧贴合部(52)贴附于穿孔(6)的侧壁的内侧。

Description

背光模组、显示装置及背光模组的制作方法
本申请要求于2019年10月12日提交中国专利局、申请号为201910966747.5、发明名称为“背光模组、显示装置及背光模组的制作方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示领域，尤其涉及一种背光模组、显示装置及背光模组的制作方法。
 背景技术
随着显示技术的发展，屏下摄像头（Camera Under Panel，CUP）技术一经推出就得到广泛认可，基于手机全面屏的发展，屏幕摄像头孔的直径越小，其隐蔽性越好，屏幕画面显示效果越好，因此屏幕摄像头孔的直径越来越小。
现有的显示装置包括相对设置的背光模组和显示装置。背光模组的常规结构包括纯铁框即背板冲压弯折及胶铁一体结构两种，背光模组中设计的放置摄像头的穿孔，其直径也需要同步缩小来实现穿孔所占面积变小。
若背光模组为背板冲压弯折结构，穿孔由构成背光模组的背板冲压弯折形成；若背光模组为胶铁一体结构，需由框胶与背板相互贴合构成一体的穿孔。无论是上述那种结构，穿孔的内孔直径因为要匹配现有量产摄像头不能压缩，因此穿孔的外孔直径越来越小，以此方式达到穿孔所占面积变小。由此可知穿孔的外孔直径与其内孔直径之间的距离越来越小，只有0.1mm。
如图1所示，为现有的一种背光模组的结构示意图，所述背光模组90包括背板91、反射片92、导光板93、光学膜片组94以及口字形遮光胶95，所述背板91弯折构成穿孔96，所述口字形遮光胶95下表面部分贴附于所述穿孔96侧壁的上表面，另一部分贴附于所述光学膜片组94的上表面，起到遮光作用。但在图1中的所述穿孔96的侧壁厚度过小，造成在穿孔96的侧壁上方与口字形遮光胶95的搭接面积很小，在两者贴附后造成口字形遮光胶95脱离穿孔96的侧壁，口字形遮光胶95翘起造成漏光。
因此，需要新的背光模组、显示装置及背光模组的制作方法来解决此问题。
 技术问题
本发明的目的在于，提供一种背光模组、显示装置及背光模组的制作方法，其解决了在背光模组穿孔处贴附的口字形遮光胶翘起造成漏光的技术问题。
 技术解决方案
为了解决上述问题，本发明提供一种背光模组，包括背板、反射片、导光板、光学膜片组以及遮光胶。具体地讲，所述反射片设于所述背板上；所述导光板设于所述反射片上；所述光学膜片组设于所述导光板上；其中所述背光模组设有穿孔，所述穿孔依次贯穿所述背板、所述反射片、所述导光板和所述光学膜片组；所述遮光胶包括上贴合部和侧贴合部；所述上贴合部的下表面一部分贴附于所述光学膜片组的上表面，另一部分贴附于所述穿孔的侧壁的上表面；所述侧贴合部贴附于所述穿孔的侧壁的内侧。
进一步地，所述上贴合部呈环形在径向上环绕所述穿孔设置。
进一步地，所述侧贴合部的长度为0.1mm-0.2mm。
进一步地，所述上贴合部和所述侧贴合部一体成型。
进一步地，所述背光模组还包括一侧背板，所述侧背板垂直于所述背板设置，所述侧背板与所述背板连接形成所述穿孔的侧壁。
进一步地，所述背板、所述侧背板的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种。
进一步地，所述光学膜片组包括扩散片、下增光片和上增光片。具体地讲，所述扩散片设于所述导光板上；所述下增光片设于所述扩散片上；所述上增光片设于所述下增光片上。
本发明还提供一种背光模组的制作方法，包括以下步骤：
提供一背板；
在所述背板上制作反射片；
在所述反射片上制作导光板；
在所述导光板上制作光学膜片组；其中，所述背光模组还开设有一穿孔，所述穿孔依次贯穿所述背板、所述反射片、所述导光板和所述光学膜片组；以及
提供一遮光胶，所述遮光胶包括上贴合部和侧贴合部；将所述上贴合部的下表面部分贴附于所述光学膜片组的上表面，另一部分贴附于所述穿孔的侧壁的上表面；并将所述侧贴合部贴附于所述穿孔的侧壁的内侧。
本发明还提供一种显示装置，包括上述背光模组。
进一步地，所述显示装置还包括下偏光片、阵列基板、彩膜基板和上偏光片。具体地讲，所述下偏光片设于所述背光模组上；所述阵列基板设于所述下偏光片上；所述彩膜基板设于所述阵列基板上；所述上偏光片设于所述彩膜基板上；其中，所述下偏光片和所述上偏光片在对应所述穿孔位置设有透光孔或透明区。
 有益效果
本发明的有益效果在于，提供一种背光模组、显示装置及背光模组的制作方法，通过使用遮光胶套设在背光模组的穿孔内，增大了所述遮光胶的贴附面积，使得所述遮光胶更加牢固的贴附在穿孔的侧壁的上表面及内侧，防止了所述遮光胶翘起造成漏光，大大降低了所述背光模组的漏光现象。
 附图说明
图1为现有的一种背光模组的结构示意图；
图2为本发明实施例中背光模组的结构示意图；
图3为本发明实施例中遮光胶的俯视图；
图4为本发明的实施例中背光模组的制作方法的流程图；
图5为本发明实施例中显示装置的结构示意图。
图中部件标识如下：
1、背板，2、反射片，3、导光板，4、光学膜片组，5、遮光胶，
6、穿孔，7、侧背板，10、背光模组，20、下偏光片，
30、阵列基板，40、彩膜基板，50、上偏光片，
41、扩散片，42、下增光片，43、上增光片，
51、上贴合部，52、侧贴合部，100、显示装置。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
在附图中，为了清楚，层和区域的厚度被夸大。例如，为了便于描述，附图中的元件的厚度和尺寸被任意地示出，因此，所描述的技术范围不由附图限定。
请参阅图2所示，本发明其中一实施例中提供一种背光模组10，包括背板1、反射片2、导光板3、光学膜片组4以及遮光胶5。
所述背板1的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种，优选为铁。
所述反射片2设于所述背板1上，所述背板1起支撑作用；所述反射片2用于反射光线，具有较好的反光性能。
所述导光板3设于所述反射片2上，所述导光板3利用光学级亚克力板材吸取从光源发出来的光在光学级亚克力板材表面的停留，当光线射到各个导光点时，反射光会往各个角度扩散，然后破坏反射条件由导光板3正面射出，通过各种疏密、大小不一的导光点，可使导光板3均匀发光。
所述光学膜片组4设于所述导光板3上，所述光学膜片组4用于增强光源的亮度和均匀性；其中，所述背光模组10还开设有一穿孔6，所述穿孔6依次贯穿所述背板1、所述反射片2、所述导光板3和所述光学膜片组4。
所述遮光胶5包括上贴合部51和侧贴合部52。所述上贴合部51的下表面一部分贴附于所述光学膜片组4的上表面，另一部分贴附于所述穿孔6的侧壁的上表面，这样设置能够使得所述上贴合部51遮挡所述导光板3一侧的光线，避免漏光；所述侧贴合部52贴附于所述穿孔6的侧壁的内侧，即所述穿孔6的内壁，设置所述侧贴合部52的目的是增大了所述遮光胶5的贴附面积，防止所述遮光胶5翘起造成漏光。
换句话讲，本实施例上述方式可理解为所述遮光胶5套设在所述穿孔6内，其增大了所述遮光胶5的贴附面积，使得所述遮光胶5更加牢固的贴附在穿孔6的侧壁的上表面及内侧，防止了所述遮光胶5翘起造成漏光，大大降低了所述背光模组10的漏光现象。
请参阅图2和图3所示，所述上贴合部51呈环形在径向上环绕所述穿孔6设置。
如图3所示，所述侧贴合部52的长度为0.1mm-0.2mm，优选为0.15mm。
本实施例优选所述上贴合部51和所述侧贴合部52一体成型。
本实施例中，所述遮光胶5的形状及尺寸与所述穿孔6的形状及尺寸相适配。即所述遮光胶5与所述穿孔6的截面同时呈圆形、矩形或多边形中的任一种，本实施例中优选所述遮光胶5与所述穿孔6的截面都呈圆形。
本实施例中，所述背光模组10还包括一侧背板7，所述侧背板7垂直于所述背板1设置，所述侧背板7与所述背板1连接形成所述穿孔6的侧壁。优选所述侧背板7与所述背板1一体成型，其制作方式包括冲压或注塑成型。
本实施例中，所述背板1、所述侧背板7的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种。优选所述侧背板7的材质与所述背板1的材质相同。也就是说，所述背光模组10的结构形式包括纯铁框即背板冲压弯折及胶铁一体两种结构。
请参阅图2所示，所述光学膜片组4包括扩散片41、下增光片42和上增光片43。具体地讲，所述扩散片41设于所述导光板3上；所述下增光片42设于所述扩散片41上；所述上增光片43设于所述下增光片42上。所述光学膜片组4用于增强光源的亮度和均匀性。所述扩散片41可增强光源的亮度。所述下增光片42对光线扩散以提供一个均匀的面光源。所述上增光片43也可增强光源的亮度。所述背光模组10的发光效果将直接影响到其视觉效果。
请参阅图4所示，本发明还提供一种背光模组10的制作方法，包括以下步骤S1-S5：
S1、提供一背板1，所述背板1的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种，优选为铁；
S2、在所述背板1上制作反射片2；
S3、在所述反射片2上制作导光板3；
S4、在所述导光板3上制作光学膜片组4；其中，所述背光模组10还开设有一穿孔6，所述穿孔6依次贯穿所述背板1、所述反射片2、所述导光板3和所述光学膜片组4；以及
S5、提供一遮光胶5，所述遮光胶5包括上贴合部51和侧贴合部52；将所述上贴合部51的下表面一部分贴附于所述光学膜片组4的上表面，另一部分贴附于所述穿孔6的侧壁的上表面；并将所述侧贴合部52贴附于所述穿孔6的侧壁的内侧。
请参阅图5所示，本发明还提供一种显示装置100，包括以上所述的背光模组10。
本实施例中的所述显示装置100可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本实施例提供的显示装置100的工作原理，与所述背光模组10的实施例工作原理一致，具体结构关系及工作原理参见所述背光模组10实施例，此处不再赘述。
本实施例中，所述显示装置100还包括下偏光片20、阵列基板30、彩膜基板40和上偏光片50。具体地讲，所述下偏光片20设于所述背光模组10上；所述阵列基板30设于所述下偏光片20上；所述彩膜基板40设于所述阵列基板30上；所述上偏光片50设于所述彩膜基板40上；其中，所述下偏光片20和所述上偏光片50在对应所述穿孔6位置设有透光孔或透明区。
本发明的有益效果在于，提供一种背光模组、显示装置及背光模组的制作方法，通过使用遮光胶套设在背光模组的穿孔内，增大了所述遮光胶的贴附面积，使得所述遮光胶更加牢固的贴附在穿孔的侧壁的上表面及内侧，防止了所述遮光胶翘起造成漏光，大大降低了所述背光模组的漏光现象。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种背光模组，包括：
    背板；
    反射片，设于所述背板上；
    导光板，设于所述反射片上；以及
    光学膜片组，设于所述导光板上；
    其中，所述背光模组设有：
    穿孔，所述穿孔依次贯穿所述背板、所述反射片、所述导光板和所述光学膜片组；以及
    遮光胶，包括上贴合部和侧贴合部；所述上贴合部的下表面一部分贴附于所述光学膜片组的上表面，另一部分贴附于所述穿孔的侧壁的上表面；所述侧贴合部贴附于所述穿孔的侧壁的内侧。
  2. 根据权利要求1所述的背光模组，其中，所述上贴合部呈环形在径向上环绕所述穿孔设置。
  3. 根据权利要求1所述的背光模组，其中，所述侧贴合部的长度为0.1mm-0.2mm。
  4. 根据权利要求1所述的背光模组，其中，所述上贴合部和所述侧贴合部一体成型。
  5. 根据权利要求1所述的背光模组，其中，还包括一侧背板，所述侧背板垂直于所述背板设置，所述侧背板与所述背板连接形成所述穿孔的侧壁。
  6. 根据权利要求5所述的背光模组，其中，所述背板、所述侧背板的材质包括铁、铝、铜、不锈钢、铝合金、硬质塑料或注塑胶体中的任一种。
  7. 根据权利要求1所述的背光模组，其中，所述光学膜片组包括：
    扩散片，设于所述导光板上；
    下增光片，设于所述扩散片上；以及
    上增光片，设于所述下增光片上。
  8. 一种背光模组的制作方法，其包括步骤：
    提供一背板；
    在所述背板上制作反射片；
    在所述反射片上制作导光板；
    在所述导光板上制作光学膜片组；其中，所述背光模组还开设有一穿孔，所述穿孔依次贯穿所述背板、所述反射片、所述导光板和所述光学膜片组；以及
    提供一遮光胶，所述遮光胶包括上贴合部和侧贴合部；将所述上贴合部的下表面一部分贴附于所述光学膜片组的上表面，另一部分贴附于所述穿孔的侧壁的上表面；并将所述侧贴合部贴附于所述穿孔的侧壁的内侧。
  9. 一种显示装置，包括权利要求1所述的背光模组。
  10. 根据权利要求9所述的显示装置，其中，还包括：
    下偏光片，设于所述背光模组上；
    阵列基板，设于所述下偏光片上；
    彩膜基板，设于所述阵列基板上；以及
    上偏光片，设于所述彩膜基板上；
    其中，所述下偏光片和所述上偏光片在对应所述穿孔位置设有透光孔或透明区。
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