CN109031744A - 背光模组及采用该背光模组的显示装置 - Google Patents

背光模组及采用该背光模组的显示装置 Download PDF

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CN109031744A
CN109031744A CN201811000965.5A CN201811000965A CN109031744A CN 109031744 A CN109031744 A CN 109031744A CN 201811000965 A CN201811000965 A CN 201811000965A CN 109031744 A CN109031744 A CN 109031744A
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diffuser plate
backlight
backlight module
buffer layer
supple buffer
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屈亚奇
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to CN201811000965.5A priority Critical patent/CN109031744A/zh
Priority to PCT/CN2018/108607 priority patent/WO2020042271A1/zh
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means

Abstract

本发明提供一种背光模组,包括一边框、一背板、至少一个背光源及至少一扩散板,所述边框围绕所述背板设置,所述背光源设置在所述背板上,所述扩散板与所述背光源相对设置,所述边框、所述背光及所述扩散板形成一腔室,在所述扩散板四周,沿所述扩散板的侧边缘设置有柔性缓冲层。本发明的优点在于,本发明背光模组在扩散板的四周设置柔性缓冲层,所述柔性缓冲层能够有效的吸收扩散板与背光模组内部结构碰撞的冲击,避免扩散板产生碎屑。即使冲击力过大产生了碎屑,所述碎屑也会粘附在柔性缓冲层上而不至于掉落进入背光模组的内部形成异物或对背光模组造成划伤,影响背光模组的性能。

Description

背光模组及采用该背光模组的显示装置
技术领域
本发明涉及液晶显示领域,尤其涉及一种背光模组及采用该背光模组的显示装置。
背景技术
液晶显示技术现在被广泛应用于电视、笔记本、手机、数码相机等等很多电子产品中。然而液晶面板本身并不发光,需要借由背光模组(backlight module,BLM)来提供一个辉度与均匀度皆充足的面光源。
背光模组按光源的位置可以分为侧入式(edge-lit)背光模组及直下式(direct-lit)背光模组。侧入式背光模组是将光源设置在液晶面板侧后方的背板边缘,光源从导光板一侧的入光面进入导光板,经反射和扩散后从导光板出光面射出,形成面光源提供给液晶面板。直下式背光模组是由多组光源均匀分布在背光模组的底部,在光源上加装发散透镜以在背光模组内部腔体的空间距离内进行混光,形成面光源提供给液晶面板。
直下式背光模组具有性价比高、光学稳定性佳等优点而被广泛应用在大量产品中,其结构包括固定在背板上的LED灯和支撑柱以及扩散板、棱镜片、反射片等膜片。其中反射片多由胶带或螺丝固定在背板上,棱镜片由挂耳固定。为了防止扩散板热胀冷缩造成的变形,扩散板多是仅由限位柱限位而没有固定。图1是在现有的背光模组中扩散板的安装位置示意图。请参阅图1,扩散板10的四周设置有多个限位柱11,所述限位柱11限制所述扩散板10的活动位置。从图1可见,除限位柱11限位所述扩散板10的位置之外,并没有其他固定结构将扩散板10固定,因此,扩散板10仍有较大的活动空间。这会引起在运输过程中,扩散板10与背光模组内部结构尤其是限位柱11的碰撞,碰撞产生的碎屑会导致模组内出现异物,严重还会使得屏幕被碎屑划伤造成不可逆的损伤,严重影响观看效果。
发明内容
本发明所要解决的技术问题是,提供一种背光模组及采用该背光模组的显示装置,其避免扩散板产生碎屑,进而避免在背光模组的内部形成异物或对背光模组造成划伤,影响背光模组的性能。
为了解决上述问题,本发明提供了一种背光模组,包括一边框、一背板、至少一个背光源及至少一扩散板,所述边框围绕所述背板设置,所述背光源设置在所述背板上,所述扩散板与所述背光源相对设置,所述边框、所述背光及所述扩散板形成一腔室,在所述扩散板四周,沿所述扩散板的侧边缘设置有柔性缓冲层。
在一实施例中,在所述扩散板朝向所述背光源的全部或部分表面设置有沿所述扩散板厚度方向的柔性缓冲层。
在一实施例中,在所述扩散板背向所述背光源的全部或部分表面设置有沿所述扩散板厚度方向的柔性缓冲层。
在一实施例中,在所述扩散板的外表面均覆盖有沿所述扩散板厚度方向的柔性缓冲层,所述扩散板与所述柔性缓冲层形成核壳结构。
在一实施例中,所述柔性缓冲层的材料包括但不限于选自硅胶、聚氨酯、聚异戊二烯及丁苯橡胶中的一种。
在一实施例中,所述柔性缓冲层由柔性透光材料制成。
在一实施例中,所述背光模组还包括一反射板,所述反射板设置在所述背光模组的底部,所述背光源发射的部分光经所述反射板反射后入射至所述扩散板。
本发明还提供一种显示装置,其包括一显示面板及一如上述的背光模组,所述背面模组设置在所述显示面板之下,用于向所述显示面板提供背光。
本发明的优点在于,本发明背光模组在扩散板的四周,沿所述扩散板的侧边缘设置柔性缓冲层,所述柔性缓冲层能够有效的吸收扩散板与背光模组内部结构碰撞的冲击,避免扩散板产生碎屑。即使冲击力过大产生了碎屑,所述碎屑也会粘附在柔性缓冲层上而不至于掉落进入背光模组的内部形成异物或对背光模组造成划伤,影响背光模组的性能。
附图说明
图1是在现有的背光模组中扩散板的安装位置示意图;
图2是本发明背光模组的截面结构示意图;
图3是所述扩散板的一立体结构示意图;
图4是图3所示扩散板沿A-A向的剖视图;
图5是本发明另一实施例的扩散板的剖面图;
图6是本发明又一实施例的扩散板的剖面图;
图7是本发明再一实施例的扩散板的剖面图;
图8是所述显示装置的结构示意图。
具体实施方式
下面结合附图对本发明提供的背光模组及采用该背光模组的显示装置的具体实施方式做详细说明。
图2是本发明背光模组的截面结构示意图。请参阅图2,本发明背光模组2包括一边框20、一背板21、至少一个背光源22及至少一扩散板23。
所述边框20围绕所述背板21设置。具体地说,所述边框20位于所述背板21的侧边处并朝向光出射方向延伸,所述边框20及所述背板21能够用作所述背光模组2的支撑架。
所述背光源22设置在所述背板21上。所述背光源22包括但不限于LED灯。在所述背板21上设置有电路板24,所述背光源22设置在所述电路板24上。进一步,在所述背板21上还设置有反射板25,所述反射板25设置在所述背光模组2的底部,具体地说,所述反射板25固定在所述背板21上。其中,所述反射板25可设置在所述背板21未被所述背光源22覆盖之处。所述背光源22发射的部分光经所述反射板25反射后入射至所述扩散板23。
所述扩散板23与所述背光源22相对设置。所述边框20、所述背板21及所述扩散板13形成一腔室,所述背光源22设置在该腔室内。背光源22发出的光经所述扩散板23出射。在本实施例中,所述背光模组2仅示意性地绘示出边框20、背板21、背光源22、扩散板23、电路板24及反射板25,所述背光模组2不仅包括上述结构,其还包括其他本领域技术人员熟知的结构,例如,多个扩散板及设置在扩散板之间的棱镜层或者导光层等,在此不再赘述。
图3是所述扩散板23的一立体结构示意图,图4是图3所示扩散板23沿A-A向的剖视图。请参阅图2、图3及图4,在所述扩散板23四周,沿所述扩散板23的侧边缘设置有柔性缓冲层30。所述柔性缓冲层30设置在所述扩散板23与限位柱11(请参阅图1)之间,在移动过程中,当所述扩散板23与背光模组2的内部部件,例如限位柱11发生碰撞时,所述柔性缓冲层30起到缓冲作用,可以有效的吸收所述扩散板23与背光模组2的内部结构碰撞的冲击,可避免所述扩散板23掉屑。即使所述扩散板23与背光模组2的内部结构碰撞的冲击力过大产生了碎屑,所述碎屑也会粘附在柔性缓冲层30上而不至于掉落进入背光模组2内部形成异物或对背光模组2造成划伤,影响背光模组2的性能。
进一步,在所述扩散板23朝向所述背光源22的全部或部分表面也设置有柔性缓冲层30。例如,图5是本发明另一实施例的扩散板23的剖面图,请参阅图5,在本发明的另一实施例中,在所述扩散板23朝向所述背光源22的部分表面也设置有沿着所述扩散板23厚度方向的柔性缓冲层30。其中,所述柔性缓冲层30可设置在扩散板23可能会与背光模组2的内部结构发生碰撞的位置,进而避免所述柔性缓冲层30过多而影响背光模组2的出光。
进一步,在所述扩散板23背向所述背光源22的全部或部分表面也设置有柔性缓冲层30。例如,图6是本发明又一实施例的扩散板23的剖面图,请参阅图6,在本发明的又一实施例中,在所述扩散板23背向所述背光源22的全部表面也设置有沿着所述扩散板23厚度方向的柔性缓冲层30。
进一步,在所述扩散板23的外表面均覆盖有柔性缓冲层30,所述扩散板23与所述柔性缓冲层30形成核壳结构。例如,图7是本发明再一实施例的扩散板23的剖面图,请参阅图7,在本发明的再一实施例中,在所述扩散板23外表面均覆盖有沿所述扩散板厚度方向的柔性缓冲层30,所述扩散板23与所述柔性缓冲层30形成核壳结构,其能够完全避免所述扩散板23与背光模组2的内部结构碰撞,进而避免扩散板23掉屑。
所述扩散板23与所述柔性缓冲层30的结合方式包括但不限于粘接或机械结合。所述柔性缓冲层30的材料包括但不限于选自硅胶、聚氨酯、聚异戊二烯及丁苯橡胶中的一种。其中,若所述柔性缓冲层30需要设置在出光位置,为了避免其对出光的影响,则所述柔性缓冲层30需要选择透光性较好的材料,所述柔性缓冲层可由柔性透光材料制成。
本发明背光模组2在扩散板23的四周设置柔性缓冲层30,所述柔性缓冲层30能够有效的吸收扩散板23与背光模组2内部结构碰撞的冲击,避免扩散板23产生碎屑。即使冲击力过大产生了碎屑,所述碎屑也会粘附在柔性缓冲层30上而不至于掉落进入背光模组2的内部形成异物或对背光模组2造成划伤,影响背光模组2的性能。
本发明还提供一种显示装置。图8是所述显示装置8的结构示意图。请参阅图8,所述显示装置8包括一显示面板80及一如上述的背光模组2。所述背光模组2设置在所述显示面板80之下,用于向所述显示面板80提供背光,所述显示面板80用于显示画面。其中,所述显示面板80的结构为常规结构,不再赘述。所述背光模组2在扩散板23的四周设置有柔性缓冲层30。
本发明显示装置在扩散板24的四周设置柔性缓冲层30,所述柔性缓冲层30能够有效的吸收扩散板23与背光模组2内部结构碰撞的冲击,避免扩散板23产生碎屑。即使冲击力过大产生了碎屑,所述碎屑也会粘附在柔性缓冲层30上而不至于掉落进入背光模组2的内部形成异物或对背光模组2造成划伤,影响背光模组2的性能,进而避免影响显示装置的显示性能。
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 (8)

1.一种背光模组,包括一边框、一背板、至少一个背光源及至少一扩散板,所述边框围绕所述背板设置,所述背光源设置在所述背板上,所述扩散板与所述背光源相对设置,所述边框、所述背光及所述扩散板形成一腔室,其特征在于,在所述扩散板四周,沿所述扩散板的侧边缘设置有柔性缓冲层。
2.根据权利要求1所述的背光模组,其特征在于,在所述扩散板朝向所述背光源的全部或部分表面设置有沿所述扩散板厚度方向的柔性缓冲层。
3.根据权利要求1所述的背光模组,其特征在于,在所述扩散板背向所述背光源的全部或部分表面设置有沿所述扩散板厚度方向的柔性缓冲层。
4.根据权利要求1所述的背光模组,其特征在于,在所述扩散板的外表面均覆盖有沿所述扩散板厚度方向的柔性缓冲层,所述扩散板与所述柔性缓冲层形成核壳结构。
5.根据权利要求1所述的背光模组,其特征在于,所述柔性缓冲层的材料选自硅胶、聚氨酯、聚异戊二烯及丁苯橡胶中的一种。
6.根据权利要求1所述的背光模组,其特征在于,所述柔性缓冲层由柔性透光材料制成。
7.根据权利要求1所述的背光模组,其特征在于,所述背光模组还包括一反射板,所述反射板设置在所述背光模组的底部,所述背光源发射的部分光经所述反射板反射后入射至所述扩散板。
8.一种显示装置,其特征在于,包括一显示面板及一如权利要求1~7任意一项所述的背光模组,所述背面模组设置在所述显示面板之下,用于向所述显示面板提供背光。
CN201811000965.5A 2018-08-30 2018-08-30 背光模组及采用该背光模组的显示装置 Pending CN109031744A (zh)

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