CN114002882B - 一种Mini LED背光源模组结构 - Google Patents
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Abstract
一种Mini LED背光源模组结构，包括多个蓝光Mini LED灯珠、多层复合膜、光转换材料层、扩散粒子层和荧光层；所述光转换材料层设置在荧光层上表面，荧光层设置在多层复合膜上表面；所述扩散粒子层设置在光转换材料层上表面；所述多层复合膜包括透光膜层和拼接膜材层；所述透光膜层紧贴蓝光Mini LED灯珠；所述拼接膜材层设置在透光膜层和荧光层之间；每个所述的Mini LED灯珠对应一个拼接膜材层。本发明，用于实现蓝光透过及局部匀光的效果；光转换材料层用于将蓝光转换为白光；扩散粒子层用于实现将白光打均匀，以形成均匀舒适的光源。
Description
技术领域
本发明涉及LED背光源模组领域，尤其涉及一种Mini LED背光源模组结构。
背景技术
现有的Mini LED的灯珠面积较小，荧光粉颗粒较大，难于实现传统直接点胶的封装方式；同时，量子点由于容易被水氧高光强等淬灭，也难于直接点胶封装。所以一般采用远程荧光膜或者荧光板的方式，实现蓝光转换为RGB光的形式，典型的荧光膜为三明治结构，荧光转换层在中间，上下层为支撑层或者保护层。
现有Mini LED技术中，为了实现匀光效果，通常采用以下方式：
方式一：通过增加蓝光灯珠与荧光膜之间的距离，以实现匀光效果，再通过荧光膜发出RGB光；但是，造成的背光仍然较厚；
方式二：通过增加灯珠的密度，大量增加灯珠使用量而实现超薄的效果；但是，成本大幅增加。
发明内容
（一）发明目的
为解决背景技术中存在的技术问题，本发明提出一种Mini LED背光源模组结构，通过复合膜材结构设计，实现膜层紧贴灯珠的背光模组设计，在不大幅增加灯珠使用量的情况下，实现了背光模组整体减薄的效果，且保证发光均匀。
（二）技术方案
为解决上述问题，本发明提出了一种Mini LED背光源模组结构，包括多个蓝光Mini LED灯珠、多层复合膜、光转换材料层、扩散粒子层和荧光层；
所述光转换材料层设置在荧光层上表面，荧光层设置在多层复合膜上表面；所述扩散粒子层设置在光转换材料层上表面；
所述多层复合膜包括透光膜层和拼接膜材层；所述透光膜层紧贴蓝光Mini LED灯珠；所述拼接膜材层设置在透光膜层和荧光层之间；每个所述的Mini LED灯珠对应一个拼接膜材层；
所述拼接膜材层的中心位于蓝光Mini LED灯珠中心的正上方；所述拼接膜材层包括多个膜材层；多个膜材层以拼接膜材层的中心为基准向四周分布设置多个，多个膜材层的折射率逐渐增大。
优选的，所述透光膜层为PET、PMMA、PEN或PC中的一种。
优选的，所述透光膜层的蓝光透过率大于80%，透光膜层的折射率小于1.5。
优选的，所述荧光层为单独荧光层，单独荧光层为稀土荧光粉材质制备而成；
或，
所述荧光层为由上、下水汽阻隔膜保护的三明治结构荧光膜层；三明治结构荧光膜层中，上、下层材料分别由：量子点材料和易失效的荧光材料制备而成；中间层为水汽阻隔膜，水汽阻隔膜为蒸镀氧化硅、氧化铝PET膜或表面涂布有阻水和阻氧涂层的PET膜制备而成。
优选的，所述膜材层设置有h个；
由中心向四周分布，h个膜材层的折射率依次为：n1、n2……nh；每个所述膜材层由边缘至中心的距离依次为：L1、L2……Lh；
其中，h为大于2的正整数。
优选的，多个Mini LED灯珠规则排布。
本发明中，多层复合膜用于实现蓝光透过及局部匀光的效果；光转换材料层用于将蓝光转换为白光；扩散粒子层用于实现将白光打均匀，以形成均匀舒适的光源。
本发明中，通过复合膜材结构设计，实现膜层紧贴灯珠的背光模组设计，在不大幅增加灯珠使用量的情况下，实现了背光模组整体减薄的效果，且保证发光均匀。
附图说明
图1为本发明提出的Mini LED背光源模组结构的结构示意图。
图2为本发明提出的Mini LED背光源模组结构中多层复合膜的结构示意图。
图3为本发明提出的Mini LED背光源模组结构中多个膜材层的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明了，下面结合具体实施方式并参照附图，对本发明进一步详细说明。应该理解，这些描述只是示例性的，而并非要限制本发明的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本发明的概念。
如图1-3所示，本发明提出的一种Mini LED背光源模组结构，包括多个蓝光MiniLED灯珠1、多层复合膜2、光转换材料层3、扩散粒子层4和荧光层5；
所述光转换材料层3设置在荧光层5上表面，荧光层5设置在多层复合膜2上表面；所述扩散粒子层4设置在光转换材料层3上表面；
所述多层复合膜2包括透光膜层21和拼接膜材层22；所述透光膜层21紧贴蓝光Mini LED灯珠1；所述拼接膜材层22设置在透光膜层21和荧光层5之间；每个所述的MiniLED灯珠1对应一个拼接膜材层22。
本发明中，多层复合膜2用于实现蓝光透过及局部匀光的效果；光转换材料层3用于将蓝光转换为白光；扩散粒子层4用于实现将白光打均匀，以形成均匀舒适的光源。
本发明中，通过复合膜材结构设计，实现膜层紧贴灯珠的背光模组设计，在不大幅增加灯珠使用量的情况下，实现了背光模组整体减薄的效果，且保证发光均匀。
在一个可选的实施例中，所述透光膜层21的蓝光透过率大于80%，透光膜层21的折射率小于1.5。
需要说明的是，蓝光透过率大于80%。透光膜层21的折射率为：1.5。
在一个可选的实施例中，所述荧光层5为单独荧光层，单独荧光层为稀土荧光粉材质制备而成；
或，
所述荧光层5为由上、下水汽阻隔膜保护的三明治结构荧光膜层；三明治结构荧光膜层中，上、下层材料分别由：量子点材料和易失效的荧光材料制备而成；中间层为水汽阻隔膜，水汽阻隔膜为蒸镀氧化硅、氧化铝PET膜或表面涂布有阻水和阻氧涂层的PET膜制备而成。
需要说明的是，水汽阻隔膜具有很好的阻隔水汽效果，以及具有很好的防氧化效果。
在一个可选的实施例中，所述拼接膜材层22的中心位于蓝光Mini LED灯珠1中心的正上方；所述拼接膜材层22包括多个膜材层；多个膜材层以拼接膜材层22的中心为基准向四周分布设置多个，多个膜材层的折射率逐渐增大。
在一个可选的实施例中，所述膜材层设置有h个；
由中心向四周分布，h个膜材层的折射率依次为：n1、n2……nh；每个所述膜材层由边缘至中心的距离依次为：L1、L2……Lh；
其中，h为大于2的正整数。
需要说明的是，多层复合膜2的折射率层层变大，其全反射角度提高，进而实现蓝光透过及局部匀光的效果。
在一个可选的实施例中，所述光转换材料层3含有用于将蓝光转换为白光的荧光粉、量子点和染料，用于将蓝紫光转化为白光。
应当理解的是，本发明的上述具体实施方式仅仅用于示例性说明或解释本发明的原理，而不构成对本发明的限制。因此，在不偏离本发明的精神和范围的情况下所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。此外，本发明所附权利要求旨在涵盖落入所附权利要求范围和边界、或者这种范围和边界的等同形式内的全部变化和修改例。
Claims (6)
1.一种Mini LED背光源模组结构，其特征在于，包括多个蓝光Mini LED灯珠（1）、多层复合膜（2）、光转换材料层（3）、扩散粒子层（4）和荧光层（5）；
所述光转换材料层（3）设置在荧光层（5）上表面，荧光层（5）设置在多层复合膜（2）上表面；所述扩散粒子层（4）设置在光转换材料层（3）上表面；
所述多层复合膜2）包括透光膜层（21）和拼接膜材层（22）；所述透光膜层（21）紧贴蓝光Mini LED灯珠（1）；所述拼接膜材层（22）设置在透光膜层（21）和荧光层（5）之间；每个所述的Mini LED灯珠（1）对应一个拼接膜材层（22）；
所述拼接膜材层（22）的中心位于蓝光Mini LED灯珠（1）中心的正上方；
所述拼接膜材层（22）包括多个膜材层；多个膜材层以拼接膜材层（22）的中心为基准向四周分布设置多个，多个膜材层的折射率逐渐增大。
2.根据权利要求1所述的Mini LED背光源模组结构，其特征在于，所述透光膜层（21）为PET、PMMA、PEN或PC中的一种。
3.根据权利要求2所述的Mini LED背光源模组结构，其特征在于，所述透光膜层（21）的蓝光透过率大于80%，透光膜层（21）的折射率小于1.5。
4.根据权利要求1所述的Mini LED背光源模组结构，其特征在于，所述荧光层（5）为单独荧光层，单独荧光层为稀土荧光粉材质制备而成；
或，
所述荧光层（5）为由上、下水汽阻隔膜保护的三明治结构荧光膜层；三明治结构荧光膜层中，上、下层材料分别由：量子点材料和易失效的荧光材料制备而成；中间层为水汽阻隔膜，水汽阻隔膜为蒸镀氧化硅、氧化铝PET膜或表面涂布有阻水和阻氧涂层的PET膜制备而成。
5.根据权利要求4所述的Mini LED背光源模组结构，其特征在于，所述膜材层设置有h个；
由中心向四周分布，h个膜材层的折射率依次为：n1、n2……nh；每个所述膜材层由边缘至中心的距离依次为：L1、L2……Lh；
其中，h为大于2的正整数。
6.根据权利要求1-5任一项所述的Mini LED背光源模组结构，其特征在于，多个MiniLED灯珠（1）规则排布。
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