CN107238969B - 一种led光源背光模组及显示装置 - Google Patents

一种led光源背光模组及显示装置 Download PDF

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CN107238969B
CN107238969B CN201710377251.5A CN201710377251A CN107238969B CN 107238969 B CN107238969 B CN 107238969B CN 201710377251 A CN201710377251 A CN 201710377251A CN 107238969 B CN107238969 B CN 107238969B
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led
light source
circuit board
backlight module
led lamp
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CN107238969A (zh
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周兵
陈文东
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Shenzhen TCL New Technology Co Ltd
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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
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • 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
    • G02F1/133609Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • G02F1/133611Direct backlight including means for improving the brightness uniformity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/64Constructional details of receivers, e.g. cabinets or dust covers
    • 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
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02F1/133614Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Abstract

本发明公开一种LED光源背光模组及显示装置,其中,该LED光源背光模组,包括电路板、设置于电路板上的至少一个LED灯以及与LED灯一一对应且罩设于LED灯上的透镜,所述LED光源背光模组还包括用于将LED灯所产生的单色光转化形成白光的光转换介质层,所述光转换介质层位于所述透镜与所述电路板之间,且布置于所述LED灯的周围区域。本发明通过大幅改善在透镜下方且环绕LED灯的区域的局部背光效果,来提高透镜上方区域的亮度和改善区域的颜色,大幅提高整体的背光效果,改善电视等的整体视觉体验。

Description

一种LED光源背光模组及显示装置
技术领域
本发明涉及电器领域,尤其涉及一种LED光源背光模组及显示装置。
背景技术
随着液晶电视行业的发展,各厂家背光设计技术日新月异,新的方案层出不穷。目前,液晶电视的背光源有两种主要方式:直下式背光源,一般采用带有光学透镜的LED(发光二极管)灯条,灯条直接贴附于背光的背板上,使主要光线几乎垂直地均匀射到外层膜片和液晶面板;侧入式背光源,采用一定的光学部件(如导光板)改变光线传递角度,将光线引导至直射膜片和液晶面板,以实现均匀背光。其中,图1至图4为现阶段的直下式背光源的结构图和光路图,其中,图4中的电路板的表面设有单色的油墨4',油墨4'通过吸收LED单色光来调整颜色。
现阶段的背光方式存在诸多技术缺陷,例如,亮度不均匀引起的灯影,或者颜色不均匀导致的色偏和灯影等。尤其是在色域技术解决方案上,经常会采用蓝光的LED加量子点荧光粉或特殊膜片的方案,在此过程中往往出现漏蓝光或产生蓝色灯影的背光效果缺陷,使液晶电视在主观视效上的体验不佳,甚至会影响用户的眼睛健康。
发明内容
本发明的主要目的是提供一种LED光源背光模组及显示装置,旨在解决透镜下方LED灯周围区域因亮度不均匀引起灯影,或者因颜色不均匀导致色偏和灯影等的技术问题。
为实现上述目的,本发明提出的LED光源背光模组,其包括电路板、设置于电路板上的至少一个LED灯以及与LED灯一一对应且罩设于LED灯上的透镜,所述LED光源背光模组还包括用于将所述LED灯所产生的单色光转化形成白光的光转换介质层,所述光转换介质层位于所述透镜与所述电路板之间,且布置于所述LED灯的周围区域。
优选地,所述光转换介质层为通过丝印或转印加工形成于所述电路板上的涂层。
优选地,所述光转换介质层为荧光粉涂层。
优选地,所述光转换介质层包括若干间隔分布的光转换介质单元,各光转换介质单元以所述LED灯为中心分布于所述LED灯的周围区域。
优选地,所述光转换介质单元呈环形阵列分布,并且布置于所述透镜在所述电路板上的投影区域内。
优选地,多个所述LED灯呈矩形阵列均匀排布于电路板上。
优选地,所述LED光源背光模组还包括设置于所述电路板上的反射片,所述反射片围设于所述透镜的周围区域。
优选地,所述电路板为PCB电路板。
本发明还提供一种显示装置,包括光转换膜片、显示面板以及如上所述的LED光源背光模组,所述光转换膜片位于LED光源背光模组与显示面板之间。
优选地,所述光转换膜片包括依次设置的上扩散片、0°增光片、90°增光片以及下扩散片。
本发明技术方案中,通过大幅改善在透镜下方且环绕LED灯的区域A的局部背光效果,来提高透镜上方区域B的亮度和改善区域B的颜色,使亮度更亮更均匀,并使颜色更均匀,从而大幅提高整体的背光效果,改善电视等的整体视觉体验。上述技术方案能够为薄型化量子点电视或广色域电视的推出提供大力的背光技术支持,改善超薄量子点电视的画质体验,大幅降低超薄量子点背光的成本,提升产品的竞争力。
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示出的结构获得其他的附图。
图1为现有的LED光源背光的一方案的结构示意图;
图2为图1方案中的光路示意图;
图3为现有的LED光源背光的另一方案的结构示意图;
图4为图3方案中的光路示意图;
图5为本发明一实施例的显示装置的方案光路示意图;
图6为图5在a处的放大图;
图7为本发明一实施例的LED光源背光模组的俯视图;
图8为图7的侧视图;
图9为图7在b处的放大图。
附图标号说明:
标号 名称 标号 名称
1 电路板 2 LED灯
3 透镜 4 光转换介质层
41 光转换介质单元 5 反射片
6 光转换膜片 7 显示面板
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
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的一部分实施例,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。
需要说明,本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。
另外,在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。
在本发明中,除非另有明确的规定和限定,术语“连接”、“固定”等应做广义理解,例如,“固定”可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
另外,本发明各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本发明要求的保护范围之内。
本发明提出一种LED光源背光模组。
请参照图5,在本发明一实施例中,该LED光源背光模组,包括电路板1、设置于电路板1上的至少一个LED灯2以及与LED灯2一一对应且罩设于LED灯2上的透镜3,该LED光源背光模组还包括用于将LED灯所产生的单色光转化形成白光的光转换介质层4,光转换介质层4位于透镜3与电路板1之间,且布置于LED灯2的周围区域。
结合图5,LED灯2为单色光源,透镜3(LENS)罩设于LED灯2的上方,用以改变从LED灯2发出的光线的方向。LED灯2发射的单色光经过透镜3后,一部分光线经折射后向上射出,形成具有一定方向的单色光线R11,另一部分光线经反射后射向透镜3的下方,形成向下的单色光线R12,单色光线R12散落于LED灯2的周围区域A上,形成颜色不均匀的色偏,严重时形成灯影,造成视觉盲区。当在透镜3的下方且环绕LED灯2的区域A设置光转换介质层4时,单色光线R12投射于光转换介质层4上:一方面,光转换介质层4将光线R12的单色光转换形成白光R23;另一方面,光转换介质层4将转换后的白光R23向上反射出去。因此,通过大幅改善透镜3下方且环绕LED灯2的区域A的局部背光效果,来提高透镜3上方区域B的亮度和改善区域B的颜色,使亮度更亮更均匀,使得颜色更均匀,大幅提高整体的背光效果,改善电视等的整体视觉体验。另外,为薄型化量子点电视或广色域电视的推出提供大力的背光技术支持,改善超薄量子点电视的画质体验,大幅降低超薄量子点背光的成本,提升产品竞争力。
优选地,光转换介质层4为通过丝印或转印加工形成于电路板1上的涂层,涂层涂覆于透镜3的下方。丝印或转印的加工工艺使涂层的涂覆效果更佳。具体地,涂覆后的光转换介质层4将单色光转换为白光的效率更高,将转换后的白光折射的效果更佳,从而大大增强透镜3下方且环绕LED灯2的区域A的局部背光效果。
优选地,光转换介质层4为荧光粉涂层。本实施例中,荧光粉涂层为白光荧光粉或量子点粉,能更好的将单色光转化为白光,且提高局部亮度和改善局部色差。本实施例中,荧光粉涂层直接铺设于电路板1上,改善超薄量子点电视的画质体验,降低生产成本。
优选地,参见图6,所述光转换介质层4包括若干间隔分布的光转换介质单元41,各光转换介质单元41以LED灯2为中心分布于LED灯2的周围区域。从而,光转换介质层4将单色光转换为白光的效率更高,将转换后的白光折射的效果更佳,从而大大增强透镜3下方、LED灯2的周围区域A的局部背光效果。本实施例中,光转换介质单元41为圆形结构。
进一步地,如图9所示,各光转换介质单元41呈环形阵列分布,并且布置于透镜3在电路板1上的投影区域内。各光转换介质单元41均匀布置的结构,使得单色光转换为白光的效率更高,将转换后的白光向上折射的效果更佳,从而大大增强透镜3下方、LED灯2的周围区域A的局部背光效果,提高局部亮度和改善局部色差。
进一步地,如图7和图8所示,多个所述LED灯2呈矩形阵列排布于电路板1上,提高局部亮度和改善局部色差的效果更佳,进一步大幅增强周围区域A的局部背光效果;优选地,多个所述LED灯2呈矩形阵列、均匀排布于电路板1上。
优选地,LED光源背光模组还包括设置于电路板1上的反射片5,此反射片5围设于透镜3的周围区域C(参照图7),反射片5可加强电路板1的反射性能,增强背光效果。本实施例中,所述电路板1为PCB电路板,可改善超薄量子点电视的画质体验,降低生产成本。
参照图5,本发明还提出一种显示装置,包括光转换膜片6、显示面板7以及如上所述的LED光源背光模组10,该光转换膜6位于LED光源背光模组10与显示面板7之间,光转换膜片6一面靠近显示面板7,且另一面与LED光源背光模组10之间形成容纳空腔。
结合图5,通过透镜3的单色光线R11经容纳空腔,向上射向光转换膜片6,光转换膜片6将单色光转换为白光。此时,转换后的白光,一部分透过光转换膜片6向上射出,另一部分被反射回电路板1,经电路板1或电路板1上的反射片5向上反射出去(图5中的R24代表反射出去的光线)。因此,在透镜3的下方且环绕LED灯2的区域A,透镜3的周围区域C均能有向上反射的白光,进一步大幅提高透镜3上方区域B的亮度和改善区域B的颜色,使亮度更亮更均匀,颜色也更均匀,大幅提高整体的背光效果,改善电视等的整体视觉体验。
优选地,光转换膜片6包括依次设置的上扩散片、0°增光片、90°增光片以及下扩散片等。本实施例中,当单色光线R11通过光转换膜片6时,光转换膜片6能将此单色光转换为白光,又可进一步提高显示装置的正视亮度或称轴向亮度。
该显示装置的具体结构参照上述实施例,由于本显示装置采用了上述所有实施例的全部技术方案,因此至少具有上述实施例的技术方案所带来的所有有益效果,在此不再一一赘述。
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是在本发明的构思下,利用本发明说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

1.一种LED光源背光模组,其包括电路板、设置于所述电路板上的至少一个LED灯以及与所述LED灯一一对应且罩设于所述LED灯上的透镜,其特征在于,所述LED光源背光模组还包括用于将所述LED灯所产生的单色光转化形成白光的光转换介质层,所述光转换介质层位于所述透镜与所述电路板之间,且布置于所述LED灯的周围区域,所述光转换介质层向对应的所述LED灯的外周侧布设,且向外超出对应的所述透镜设置。
2.如权利要求1所述的LED光源背光模组,其特征在于,所述光转换介质层为通过丝印或转印加工形成于所述电路板上的涂层。
3.如权利要求2所述的LED光源背光模组,其特征在于,所述光转换介质层为荧光粉涂层。
4.如权利要求1至3中任意一项所述的LED光源背光模组,其特征在于,所述光转换介质层包括若干间隔分布的光转换介质单元,各光转换介质单元以所述LED灯为中心分布于所述LED灯的周围区域。
5.如权利要求4所述的LED光源背光模组,其特征在于,所述光转换介质单元呈环形阵列分布,并且布置于所述透镜在所述电路板上的投影区域内。
6.如权利要求1至3中任意一项所述的LED光源背光模组,其特征在于,多个所述LED灯呈矩形阵列排布于电路板上。
7.如权利要求1至3中任意一项所述的LED光源背光模组,其特征在于,所述LED光源背光模组还包括设置于所述电路板上的反射片,所述反射片围设于所述透镜的周围区域。
8.如权利要求1至3中任意一项所述的LED光源背光模组,其特征在于,所述电路板为PCB电路板。
9.一种显示装置,其特征在于,所述显示装置包括光转换膜片、显示面板以及权利要求1至8中任意一项所述的LED光源背光模组,所述光转换膜片位于所述LED光源背光模组与显示面板之间。
10.如权利要求9所述的显示装置,其特征在于,所述光转换膜片包括依次设置的上扩散片、0°增光片、90°增光片以及下扩散片显示面板。
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