WO2016101530A1 - 背光模组和显示装置 - Google Patents

背光模组和显示装置 Download PDF

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Publication number
WO2016101530A1
WO2016101530A1 PCT/CN2015/080271 CN2015080271W WO2016101530A1 WO 2016101530 A1 WO2016101530 A1 WO 2016101530A1 CN 2015080271 W CN2015080271 W CN 2015080271W WO 2016101530 A1 WO2016101530 A1 WO 2016101530A1
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WO
WIPO (PCT)
Prior art keywords
substrate
shielding structure
backlight module
light
display
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Application number
PCT/CN2015/080271
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English (en)
French (fr)
Inventor
李艳平
钱志禹
张正元
姜毅强
孙勇
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/121,405 priority Critical patent/US10018773B2/en
Publication of WO2016101530A1 publication Critical patent/WO2016101530A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a display device.
  • Fig. 1 shows a display device in the prior art.
  • the display device includes a backlight module 1', a color filter substrate 2', and an array substrate 3'.
  • a black matrix 21' is disposed in the non-display area of the color filter substrate 2';
  • a non-display area of the array substrate 3' is provided with a binding area 31', and the binding area 31' is covered with a UV-curable adhesive 32' To protect the line of the bonded area 31'.
  • the backlight module 1' includes a plastic frame 11' for supporting the color filter substrate 2' and the array substrate 3'.
  • the plastic frame 11' includes a first portion 111' parallel to the array substrate 3', a first portion 111' and an array substrate 3.
  • a rubber strip 12' is disposed between the non-display areas.
  • the display device having the above structure has a phenomenon of peripheral light leakage during display.
  • the cause of the peripheral light leakage phenomenon includes the following three types: First, the black matrix 21' does not extend to the edge of the color filter substrate 2', and the light passes through the area of the color filter substrate 2' which is not covered by the black matrix; In the two types, the ultraviolet curable adhesive 32' is usually white or blue, and has a certain light transmissivity so that light can pass through the region. Thirdly, due to the limitation of the manufacturing process, the first portion 111' of the bezel 11' is close to the array. The surface of the substrate 3' is not flat, so that there is a gap between the rubber strip 12' and the array substrate 3' which allows light to pass therethrough.
  • Embodiments of the present invention provide a backlight module and a display device, which can improve the light leakage phenomenon around the display device.
  • a backlight module for displaying a substrate including:
  • a first light shielding structure disposed between the first portion and the display substrate, a vertical projection of the first light shielding structure on a plane of the display substrate, and at least one substrate light shielding structure adjacent to an edge of the display substrate At least partially overlapping each other.
  • the material of the first light shielding structure is made of rubber gum.
  • the substrate light shielding structure is a black matrix on the display substrate.
  • the overlapped region has a width of 1 mm or more.
  • an edge of the first light-shielding structure away from a center of the backlight module is aligned with an edge of the display substrate or beyond an edge of the display substrate.
  • the first frame is a plastic frame; a side of the first portion adjacent to the display substrate is provided with a mounting reference, and the first light shielding structure is attached to the sticker.
  • the attached reference extends in a direction close to the center of the backlight module.
  • the attaching reference is a strip-shaped protrusion.
  • the backlight module according to an embodiment of the present invention further includes a light guide plate, the first frame further includes a second portion extending from an end of the first portion to a direction perpendicular to the light guide plate, the second portion A portion is connected to the light guide plate through a connection structure.
  • the vertical projection of the first light-shielding structure on the plane of the substrate light-shielding structure and the substrate light-shielding structure near the edge of the display substrate at least partially overlap each other, so that the first light-shielding structure can block
  • the area near the edge of the display substrate that is not covered by the substrate light-shielding structure is occupied, and the gap between the first light-shielding structure and the display substrate is increased, thereby improving the peripheral light leakage phenomenon of the display device.
  • a display device includes a display substrate, and the backlight module according to any of the above embodiments.
  • the display device further includes an array substrate disposed opposite to the display substrate, and a peripheral region of the array substrate is provided with a binding region, and the binding region is covered with a second light shielding structure.
  • the second light shielding structure is a black ultraviolet curable adhesive.
  • the second light shielding structure is adjacent to an edge of the display substrate.
  • a display device further includes a flexible circuit board, and the flexible circuit board
  • the binding wires in the binding area are electrically connected, and the second light shielding structure covers an edge of the flexible circuit board.
  • the second light shielding structure has a width of 1.0 mm to 1.5 mm.
  • the at least one substrate light shielding structure extends to an edge of the display substrate.
  • the embodiment of the present invention provides a display device as described above. Since the display device uses the backlight module as in the above embodiment, the vertical projection of the first light shielding structure on the plane of the substrate light shielding structure is provided in the display device.
  • the substrate light-shielding structures adjacent to the edges of the display substrate at least partially overlap each other such that the first light-shielding structure can block an area near the edge of the display substrate that is not covered by the substrate light-shielding structure, and the first light-shielding structure and the display substrate are The gap between the two increases, thereby improving the light leakage around the display device.
  • FIG. 1 is a schematic diagram of a phenomenon of light leakage around a display device in the prior art
  • FIG. 2 is a partial cross-sectional view of a display device according to an embodiment of the present invention.
  • 1-backlight module 11-first frame; 111-first part;
  • 2-display substrate 21-substrate light-shielding structure; 3-array substrate;
  • 31-binding area 32-second light-shielding structure; 4-flex circuit board.
  • the embodiment of the present invention provides a backlight module 1 for displaying a substrate 2, the backlight module 1 including: a first frame 11 for fixing the optical film 14, the first frame 11 having a first portion 111 parallel to the display substrate 2; and a first light-shielding structure 12 disposed between the first portion 111 and the display substrate 2, the vertical projection of the first light-shielding structure 12 on the plane of the display substrate 2 and the display substrate 2 At least one of the plurality of substrate light-shielding structures 21 in the non-display area adjacent to the edge of the display substrate at least partially overlaps each other.
  • the backlight module in various embodiments of the backlight module provided by the present embodiment, although the concepts of the display substrate, the array substrate, or the color filter substrate are mentioned, it does not mean that the backlight module also includes these devices. Or the structure, but the backlight module needs to cooperate with the display substrate, the array substrate or the color film substrate, etc. in application.
  • the embodiment of the present invention provides a backlight module as described above, in which the vertical projection of the first light-shielding structure on the plane of the display substrate overlaps with the substrate light-shielding structure near the edge of the display substrate, thereby
  • the first light shielding structure can block a region of the vicinity of the edge of the display substrate that is not covered by the substrate light shielding structure, and the gap between the first light shielding structure and the display substrate is increased, thereby improving the peripheral light leakage phenomenon of the display device.
  • the first light-shielding structure 12 has elasticity.
  • the material of the first light-shielding structure 12 includes rubber, so that the first light-shielding structure 12 can also serve as the first frame 11 and the display substrate while being shielded from light. 2 between the cushions.
  • the first light-shielding structure 12 made of a rubber material is hard.
  • the substrate light shielding structure 21 is a black matrix on the display substrate 2.
  • the display substrate 2 is a color filter substrate
  • the color film substrate is provided with a sub-pixel and a black matrix
  • the black matrix is located between the gaps of adjacent sub-pixels on the display substrate 2, and is in the array substrate
  • the positions of the gate lines, the data lines, and the thin film transistors correspond to block the gate lines, the data lines, and the thin film transistors.
  • the width of the region 22 where the vertical projection of the first light-shielding structure 12 on the plane of the display substrate 2 overlaps with the substrate light-shielding structure 21 is greater than or equal to 1 mm.
  • the edge of the first light-shielding structure 12 away from the center of the backlight module 1 is aligned with the edge of the display substrate 2 or beyond the edge of the display substrate 2, so that the gap between the first light-shielding structure and the display substrate 2 can be increased. Thereby, the phenomenon of leakage of light in the periphery of the display device during display is further improved.
  • the edge of the first light-shielding structure 12 away from the center of the backlight module 1 is beyond the edge of the display substrate 2, specifically, the edge of the first light-shielding structure 12 away from the center of the backlight module 1 is away from the backlight mode.
  • the direction of the center of the group 1 is beyond the edge of the display substrate 2.
  • the first frame 11 is a plastic frame.
  • the first light shielding structure 12 is fixed on the first portion 111 by attaching. Therefore, in order to reduce the difficulty of attaching the first light shielding structure 12 and ensure the accurate positioning position, the first portion 111 can be adjacent to the display substrate 2 .
  • the attaching reference 111a is provided on one side, and the first light-shielding structure 12 is attached based on the attaching reference 111a, and the first light-shielding structure 12 extends from the attaching reference 111a toward the center of the backlight module 1.
  • the attachment reference 111a is a strip-like protrusion integrally formed on the first portion 111.
  • the strip-like protrusions can prevent the first light-shielding structure 12 from moving away from the center of the backlight module 1 while serving as a reference for attaching the first light-shielding structure 12.
  • the first frame 11 includes: a first portion, a second portion extending from one end of the first portion to a direction perpendicular to the light guide plate, and extending from the second portion to the light guide plate and the optical A third portion between the diaphragms, wherein the third portion is disposed to block a portion of the light that is directed toward the area of the display substrate that is not covered by the substrate light-shielding structure.
  • a rubber strip for preventing the movement of the light guide plate may be disposed between the third portion and the light guide plate.
  • the first frame 11 may not have the third portion. section. As shown in FIG. 2 , the first frame 11 includes a first portion 111 , and a second portion 112 extending from an end of the first portion 111 toward the light guide plate 13 in the backlight module 1 . The second portion 112 passes through the connection structure. 15 is connected to the light guide plate 13.
  • the connection structure 15 can be a rubber strip. Since the first frame 11 does not have the third portion between the light guide plate 13 and the optical film 14, the structure of the first frame 11 is simple, and the mounting of the first frame 11 is also simple.
  • a display device as shown in FIG. 2, comprising a display substrate 2 and a backlight module 1 according to any of the above embodiments.
  • the vertical projection of the first light shielding structure on the plane of the substrate light shielding structure and the substrate shielding near the edge of the display substrate The structures at least partially overlap each other such that the first light-shielding structure can block a region near the edge of the display substrate that is not covered by the substrate light-shielding structure, and the gap between the first light-shielding structure and the display substrate is increased, thereby improving the display device Light leakage around the perimeter.
  • the display device further includes an array substrate 3 disposed opposite to the display substrate 2.
  • the peripheral region of the array substrate 3 is provided with a binding region 31, and the binding region 31 is covered with a second light shielding structure 32, thereby further preventing light from being worn.
  • the bonding area 31 of the array substrate 3 is passed.
  • the second light-shielding structure 32 is a black ultraviolet-curable adhesive, so that the binding line in the binding region 31 can also be protected while shielding the light.
  • the black ultraviolet curable adhesive has a good light-shielding effect, its light-shielding property makes the curing time longer, so that the assembly time of the display device is also longer, and the ultraviolet light intensity can be enhanced and the curing mechanism can be changed.
  • the method shortens the curing time of the black ultraviolet curable adhesive, thereby shortening the assembly time of the display device.
  • the second light shielding structure 32 is adjacent to the edge of the display substrate 2.
  • the second light shielding structure 32 can be formed by coating a viscous material such as a black ultraviolet curable glue along the edge of the display substrate 2. Since the black ultraviolet curable adhesive has a certain fluidity, the black ultraviolet curable adhesive can be caused to flow away from the edge of the display substrate 2, and the display device further includes a binding disposed on the array substrate 3 and in the binding region 31.
  • the black ultraviolet curable adhesive can flow toward the edge of the flexible circuit board 4.
  • the formed second light shielding structure 32 covers the edge of the flexible circuit board 4, so that the peripheral light leakage phenomenon can be further improved.
  • the width of the second light shielding structure 32 in the embodiment of the present invention is 1.0 mm-1.5 mm to ensure that it can cover the flexible electricity.
  • At least one substrate light shielding structure 21 located at the edge of the display substrate 2 extends to the edge of the display substrate 2, and the substrate light shielding structure 21 and the first light shielding structure 12 are at least partially The grounds are placed one on top of the other to work together to improve the light leakage prevention effect.
  • the edges of the substrate light-shielding structures 21 may be cut so that the edges of the display substrate 2 are aligned with the edges of the substrate light-shielding structure 21, that is, the substrate light-shielding structure 21 extends to the display substrate. The edge of 2.
  • the chips generated in the above cutting process may contaminate the polarizer (not shown) on the side of the display substrate 2 away from the display substrate 2, so that foreign matter appears on the polarizer.
  • the diamond cleaning brush is selected.
  • the grinding belt removes the foreign matter on the polarizer to ensure that the display effect of the display device is not affected.
  • the display device may be any product or component having a display function, such as a liquid crystal panel, an electronic paper mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a liquid crystal panel, an electronic paper mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

Abstract

一种用于显示基板的背光模组（1），以改善显示装置的周边漏光现象。背光模组（1）包括：第一框体（11），所述第一框体（11）具有与显示基板（2）平行的第一部分（111）；以及第一遮光结构（12），设置在所述第一部分（111）与所述显示基板（2）之间，所述第一遮光结构（12）在所述显示基板（2）所在平面上的垂直投影与靠近所述显示基板（2）的边缘的至少一个基板遮光结构至少部分地相互交叠。还提供了一种包括上述背光模组（1）的显示装置。

Description

背光模组和显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种背光模组和显示装置。
背景技术
图1示出了现有技术中的一种显示装置。该显示装置包括背光模组1′、彩膜基板2′和阵列基板3′。具体地，彩膜基板2′的非显示区域内设置有黑矩阵21′；阵列基板3′的非显示区域内设置有绑定区域31′，绑定区域31′上覆盖有紫外线固化胶32′，以保护绑定区域31′的线路。背光模组1′包括用以支撑彩膜基板2′和阵列基板3′的胶框11′，胶框11′包括与阵列基板3′平行的第一部分111′，第一部分111′和阵列基板3′的非显示区域之间设置有橡胶条12′。
发明人发现，具有上述结构的显示装置在显示过程中存在周边漏光的现象。具体地，造成周边漏光现象的原因包括以下三种：第一种，黑矩阵21′未延伸至彩膜基板2′的边缘，光线透过彩膜基板2′未被黑矩阵覆盖的区域；第二种，紫外线固化胶32′通常为白色或蓝色，具有一定的透光性，使得光线可以穿过该区域；第三种，由于制作工艺限制，胶框11′的第一部分111′靠近阵列基板3′的表面不平整，使得橡胶条12′与阵列基板3′之间存在缝隙，该缝隙会使得光线通过。
发明内容
本发明的实施例提供一种背光模组和显示装置，能够改善显示装置的周边漏光现象。
根据本发明一个方面的实施例，提供用于显示基板的背光模组，包括：
第一框体，所述第一框体具有与显示基板平行的第一部分；以及
第一遮光结构，设置在所述第一部分与所述显示基板之间，所述第一遮光结构在所述显示基板所在平面上的垂直投影与靠近所述显示基板的边缘的至少一个基板遮光结构至少部分地相互交叠。
根据本发明一种实施例的背光模组，制作所述第一遮光结构的材质包括橡 胶。
根据本发明一种实施例的背光模组，所述基板遮光结构为所述显示基板上的黑矩阵。
根据本发明一种实施例的背光模组，交叠的区域的宽度大于等于1mm。
根据本发明一种实施例的背光模组，所述第一遮光结构的远离所述背光模组中心一侧的边缘与所述显示基板的边缘对齐或者超出所述显示基板的边缘。
根据本发明一种实施例的背光模组，所述第一框体为胶框；所述第一部分靠近所述显示基板的一面上设置有贴附基准，所述第一遮光结构自所述贴附基准向靠近所述背光模组中心的方向延伸。
根据本发明一种实施例的背光模组，所述贴附基准为条状突起。
根据本发明一种实施例的背光模组还包括导光板，所述第一框体还包括自所述第一部分的一端向靠近所述导光板方向垂直延伸出的第二部分，所述第二部分通过连接结构与所述导光板连接。
在根据本发明实施例的背光模组中，第一遮光结构在基板遮光结构所在平面的垂直投影与靠近显示基板的边缘的基板遮光结构至少部分地相互交叠，从而使得第一遮光结构能够遮挡住显示基板的边缘附近未被基板遮光结构覆盖的区域，并且使得第一遮光结构与显示基板之间的缝隙增长，从而改善显示装置的周边漏光现象。
根据本发明另一方面的实施例，提供一种显示装置，包括显示基板、和如上述任一实施例所述的背光模组。
根据本发明一种实施例的显示装置还包括与所述显示基板相对设置的阵列基板，所述阵列基板的外围区域设置有绑定区域，所述绑定区域上覆盖有第二遮光结构。
根据本发明一种实施例的显示装置，所述第二遮光结构为黑色紫外线固化胶。
根据本发明一种实施例的显示装置，所述第二遮光结构与所述显示基板的边缘邻接。
根据本发明一种实施例的显示装置还包括柔性电路板，所述柔性电路板与 所述绑定区域中的绑定线电连接，所述第二遮光结构覆盖所述柔性电路板的边缘。
根据本发明一种实施例的显示装置，所述第二遮光结构的宽度为1.0mm-1.5mm。
根据本发明一种实施例的显示装置，所述至少一个基板遮光结构延伸至所述显示基板的边缘。
本发明实施例提供了一种如上述的显示装置，由于该显示装置使用了如上述实施例的背光模组，因此，在该显示装置中，第一遮光结构在基板遮光结构所在平面的垂直投影与靠近显示基板的边缘的基板遮光结构至少部分地相互交叠，从而使得第一遮光结构能够遮挡住显示基板的边缘附近未被基板遮光结构覆盖的区域，并且使得第一遮光结构与显示基板之间的缝隙增长，从而改善显示装置的周边漏光现象。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中的显示装置的周边漏光现象的原理图；以及
图2为本发明实施例提供的一种显示装置的局部截面示意图。
附图标记说明：
1-背光模组；       11-第一框体；      111-第一部分；
111a-贴附基准；    112-第二部分；     12-第一遮光结构；
13-导光板；        14-光学膜片；      15-橡胶条；
2-显示基板；       21-基板遮光结构；  3-阵列基板；
31-绑定区域；      32-第二遮光结构；  4-柔性电路板。
具体实施方式
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图2所示，本发明实施例提供了一种用于显示基板2的背光模组1，该背光模组1包括：用于固定光学膜片14的第一框体11，第一框体11具有与显示基板2平行的第一部分111；以及第一遮光结构12，设置在第一部分111与显示基板2之间，第一遮光结构12在显示基板2所在平面上的垂直投影与显示基板2的非显示区域内的多个基板遮光结构21中靠近显示基板的边缘的至少一个基板遮光结构至少部分地相互交叠。
需注明的是，本实施方式所提供的背光模组的各实施例中，虽然提及了显示基板、阵列基板或彩膜基板等概念，但并不代表所述背光模组也包含这些器件或结构，而是由于所述背光模组在应用时需要与显示基板、阵列基板或彩膜基板等相配合。
另外，在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本披露实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。
本发明实施例提供了一种如上述的背光模组，在该背光模组中，第一遮光结构在显示基板所在平面的垂直投影与靠近显示基板的边缘的基板遮光结构相互交叠，从而使得第一遮光结构能够遮挡住显示基板边缘的附近未被基板遮光结构覆盖的区域，并且使得第一遮光结构与显示基板之间的缝隙增长，从而改善显示装置的周边漏光现象。
具体地，本发明实施例中第一遮光结构12具有弹性，例如第一遮光结构12的材质包括橡胶，从而使第一遮光结构12在遮光的同时，还可以作为第一框体11和显示基板2之间的缓冲垫。此外，当第一遮光结构12的靠近显示模组1中心一侧的边缘超出第一部分111的靠近显示模组1中心一侧的边缘时，由橡胶材料制成的第一遮光结构12较硬，不易下垂或者弯曲，从而还可以防止第一遮光结构12超出第一部分111的部分下垂或弯曲而导致第一遮光结构12与显示 基板2之间的缝隙扩大的现象出现。
在一种实施例中，基板遮光结构21为显示基板2上的黑矩阵。示例性地，当显示基板2为彩膜基板时，彩膜基板上设置有亚像素和黑矩阵，黑矩阵位于显示基板2上的相邻的亚像素的间隙之间，并与阵列基板中的栅线、数据线和薄膜晶体管的位置对应，以遮挡栅线、数据线和薄膜晶体管。
为了提高防漏光效果，第一遮光结构12在显示基板2所在平面上的垂直投影与基板遮光结构21之间交叠的区域22的宽度大于等于1mm。
进一步地，第一遮光结构12的远离背光模组1中心一侧的边缘与显示基板2的边缘对齐，或者超出显示基板2的边缘，可以使得第一遮光结构与显示基板2之间的缝隙增长，从而进一步改善显示装置在显示过程中的周边漏光的现象。需要说明的是，第一遮光结构12的远离背光模组1中心一侧的边缘超出显示基板2的边缘，具体为第一遮光结构12的远离背光模组1中心一侧的边缘沿远离背光模组1中心的方向超出显示基板2的边缘。
本发明实施例中，第一框体11为胶框。此时，第一遮光结构12通过贴附的方式固定于第一部分111上，因此，为了降低第一遮光结构12的贴附难度以及保证贴附位置准确，可以在第一部分111的靠近显示基板2的一面上设置贴附基准111a，并基于该贴附基准111a贴附第一遮光结构12，第一遮光结构12自贴附基准111a向靠近所述背光模组1中心的方向延伸。
在一种实施例中，贴附基准111a为一体地形成在第一部分111上的条状突起。该条状突起在作为第一遮光结构12的贴附基准的同时，还可以防止第一遮光结构12向远离背光模组1的中心的方向移动。
在一种实施例中，参见图1，第一框体11包括：第一部分、自第一部分的一端向靠近导光板方向垂直延伸出的第二部分，以及自第二部分延伸至导光板和光学膜片之间的第三部分，其中，第三部分的设置可以遮挡部分射向显示基板未被基板遮光结构覆盖的区域的光线。此时，在第三部分与导光板之间可以设置用以防止导光板移动的橡胶条。
在本发明的一种可替换的实施例中，由于第一遮光结构12可以遮挡住显示基板2未被基板遮光结构21覆盖的区域，因此，第一框体11可以不具有第三 部分。如图2所示，第一框体11包括第一部分111、自第一部分111的一端向靠近背光模组1中的导光板13方向垂直延伸出的第二部分112，第二部分112通过连接结构15与导光板13连接。连接结构15可以为橡胶条。由于第一框体11不具有位于导光板13和光学膜片14之间的第三部分，从而使得第一框体11的结构简单，并且使得第一框体11的安装也简单。
根据本发明另一方面的实施例，还提供了一种显示装置，如图2所示，该显示装置包括显示基板2和如上任一实施例所述的背光模组1。
根据本发明实施例提供的显示装置，由于使用了如上述的背光模组，因此，在该显示装置中，第一遮光结构在基板遮光结构所在平面的垂直投影与靠近显示基板的边缘的基板遮光结构至少部分地相互交叠，从而使得第一遮光结构能够遮挡住显示基板的边缘附近未被基板遮光结构覆盖的区域，并且使得第一遮光结构与显示基板之间的缝隙增长，从而改善显示装置的周边漏光现象。
具体地，上述显示装置还包括与显示基板2相对设置的阵列基板3，阵列基板3的外围区域设置有绑定区域31，绑定区域31上覆盖有第二遮光结构32，从而进一步防止光线穿过阵列基板3的绑定区域31。
在一种实施例中，第二遮光结构32为黑色紫外线固化胶，从而在遮光的同时，还可以保护绑定区域31中的绑定线。需要说明的是，虽然黑色紫外线固化胶具有良好的遮光效果，但是其遮光性使得其固化时间也较长，使得显示装置的组装时间也较长，可以通过增强紫外灯光照强度和变更固化机构的方式缩短黑色紫外线固化胶的固化时间，从而缩短显示装置的组装时间。
在本发明实施例中，第二遮光结构32与显示基板2的边缘邻接。第二遮光结构32可以通过将粘稠状的原材料，例如黑色紫外线固化胶，沿显示基板2的边缘涂布而形成。由于黑色紫外线固化胶具有一定的流动性，从而可以使黑色紫外线固化胶向远离显示基板2的边缘的方向流动，当显示装置还包括设置在在阵列基板3并与绑定区域31中的绑定线电连接的柔性电路板4时，黑色紫外线固化胶可以向柔性电路板4的边缘流动，此时，形成的第二遮光结构32覆盖柔性电路板4的边缘，从而能够进一步改善周边漏光现象。进一步地，本发明实施例中的第二遮光结构32的宽度为1.0mm-1.5mm，以保证其能够覆盖柔性电 路板4的边缘。
为了进一步防止光线穿过显示基板2边缘附件的非显示区域，位于显示基板2的边缘的至少一个基板遮光结构21延伸至显示基板2的边缘，这些基板遮光结构21与第一遮光结构12至少部分地相互叠置，从而共同作用，可以提高防漏光效果。具体地，在切割形成显示基板2的过程中，可以沿一些基板遮光结构21的边缘来切割，从而使得显示基板2的边缘与基板遮光结构21的边缘对齐，即基板遮光结构21延伸至显示基板2的边缘。在上述切割过程中产生的碎屑会污染位于显示基板2远离显示基板2的一侧的偏光片(图中未示出)，使偏光片上出现异物，本发明实施例中选择使用金刚清洁毛刷或者研磨带来清除偏光片上的异物，以保证显示装置的显示效果不受影响。
此外，本发明实施例提供的显示装置可以为：液晶面板、电子纸手机、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。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (15)

  1. 一种用于显示基板的背光模组，包括：
    第一框体，所述第一框体具有与显示基板平行的第一部分；以及
    第一遮光结构，设置在所述第一部分与所述显示基板之间，所述第一遮光结构在所述显示基板所在平面上的垂直投影与靠近所述显示基板的边缘的至少一个基板遮光结构至少部分地相互交叠。
  2. 根据权利要求1所述的背光模组，其中，制作所述第一遮光结构的材质包括橡胶。
  3. 根据权利要求1所述的背光模组，其中，所述基板遮光结构为所述显示基板上的黑矩阵。
  4. 根据权利要求1-3中任一项所述的背光模组，其中，交叠的区域的宽度大于等于1mm。
  5. 根据权利要求1-4中任一项所述的背光模组，其中，所述第一遮光结构的远离所述背光模组中心一侧的边缘与所述显示基板的边缘对齐或者超出所述显示基板的边缘。
  6. 根据权利要求1-5中任一项所述的背光模组，其中，
    所述第一框体为胶框；
    所述第一部分靠近所述显示基板的一面上设置有贴附基准，所述第一遮光结构自所述贴附基准向靠近所述背光模组中心的方向延伸。
  7. 根据权利要求6所述的背光模组，其中，所述贴附基准为条状突起。
  8. 根据权利要求1-7中任一项所述的背光模组，还包括导光板，所述第一框体还包括自所述第一部分的一端向靠近所述导光板方向垂直延伸出的第二部分，所述第二部分通过连接结构与所述导光板连接。
  9. 一种显示装置，包括：
    显示基板，以及
    如权利要求1-8中任一项所述的背光模组。
  10. 根据权利要求9所述的显示装置，还包括与所述显示基板相对设置的 阵列基板，所述阵列基板的外围区域设置有绑定区域，所述绑定区域上覆盖有第二遮光结构。
  11. 根据权利要求10所述的显示装置，其中，所述第二遮光结构为黑色紫外线固化胶。
  12. 根据权利要求11所述的显示装置，其中，所述第二遮光结构与所述显示基板的边缘邻接。
  13. 根据权利要求12所述的显示装置，还包括柔性电路板，所述柔性电路板与所述绑定区域中的绑定线电连接，所述第二遮光结构覆盖所述柔性电路板的边缘。
  14. 根据权利要求13所述的显示装置，其中，所述第二遮光结构的宽度为1.0mm-1.5mm。
  15. 根据权利要求9-14中任一项所述的显示装置，其中，所述至少一个基板遮光结构延伸至所述显示基板的边缘。
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