CN114578619A - 一种复合型分光膜片 - Google Patents
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Abstract
一种复合型分光膜片，包括底层、基层和胶层；基层位于底层和胶层之间，底层包括排列的第一微单元，该微单元为正四面体结构；胶层包括交错排列的第二微单元，该第二微单元包括对角交错设置的四棱锥结构，在该四棱锥结构的顶部切割形成平面，从该平面向外生成有圆台，在该四棱锥结构的侧面的斜边均匀设置有三棱锥结构，圆台顶部向内凹陷。本发明的微结构上的圆台结构为微凹陷式圆台，此结构起到聚光作用和散热作用，下端的正四体结构起稳固加强作用，微结构上的对角相互交错的棱锥将Mini/Micro‑LED灯板上发射的光打散，模糊化灯影，降低灯影可见率。
Description
技术领域
本发明涉及液晶显示领域，具体涉及一种复合型分光膜片。
背景技术
Mini/Micro-LED背光模组使用的是蓝光芯片，由于受波长一致性、驱动电压、电流波动的影响，在背光全白场检测中经常出现亮度不均或色度不均等问题。在传统的侧入式背光中，波长的一致性问题通常通过混bin的方案来解决。但是一般混bin都是在完成封装后再进行，即将已经混好规格的LED按照不同算法选择混合，而Mini/Micro-LED背光通常使用在PCB板上芯片封装的方案。芯片按照同一规格排布在蓝膜上，如果在转移过程中进行混规格不仅会降低转移的速度，而且同时大幅增加转移的难度。所以目前颜色形成中出现光色不均匀性的问题。行业目前采用D-mura技术来解决或者增加膜片的雾度或厚度来改善光色不均性问题，但是这些方法会牺牲Mini/Micro-LED背光的亮度，增加功耗，进而容易导致热量集中等问题。
发明内容
本发明针对现有技术的不足，提出一种复合型分光膜片，具体技术方案如下：
一种复合型分光膜片，其特征在于：包括底层、基层和胶层；
所述基层位于所述底层和胶层之间，所述底层包括排列的第一微单元，该微单元为正四面体结构；
所述胶层包括交错排列的第二微单元，该第二微单元包括对角交错设置的四棱锥结构，在该四棱锥结构的顶部切割形成平面，从该平面向外生成有圆台，在该四棱锥结构的侧面的斜边均匀设置有三棱锥结构，所述圆台顶部向内凹陷。
为更好的实现本发明，可进一步为，所述底层为转蓝光材质，该底层包括蓝光转化剂。
进一步地，所述转蓝光材质为PC、PMMA、PS中的一种或者几种，所述底材的厚度≥0.050mm。
进一步地，所述转蓝光剂为荧光粉或者量子点，所述荧光粉为硅酸盐、氮氧化物绿粉、氮化物红粉、YAG黄粉中的一种或者几种。
进一步地，所述荧光粉含量在底材中的分散比例为70％-100％。
进一步地，所述量子点含量在底材中的分散比例为50％-100％。
进一步地，所述基材的厚度≥0.05mm。
进一步地，所述圆台凹陷深度≥0.01mm。
进一步地，所述三棱锥结构的pitch为0.010mm-0.050mm。
本发明的有益效果为：本发明的微结构上的圆台结构为微凹陷式圆台，此结构起到聚光作用和散热作用，下端的正四体结构起稳固加强作用，微结构上的对角相互交错的棱锥将Mini/Micro-LED灯板上发射的光打散，模糊化灯影，降低灯影可见率。
附图说明
图1为第二微单元的俯视图；
图2为第二微单元的正视图；
图3为背光模组架构图；
图中附图说明为，四棱锥结构1、三棱锥结构2、圆台3、LED灯组4、蓝光透射膜5、复合型分光膜片6、下扩散膜7、下增光膜8、上增光膜9、上扩散膜10。
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做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。
背光模组包括LED灯组4、蓝光透射膜5、复合型分光膜片6、下扩散膜7、下增光膜8、上增光膜9、上扩散膜10。
蓝光透射膜5位于LED灯组4上方，复合型分光膜片6安装在蓝光透射膜5上，下扩散膜7安装在复合型分光膜片6上，下增光膜8安装在下扩散膜7上，上增光膜9安装在下增光膜8上，上扩散膜10安装在上增光膜9上。
其中，复合型分光膜片6，包括底层、基层和胶层，所述基材的厚度≥0.05mm。
所述基层位于所述底层和胶层之间，所述底层包括排列的第一微单元，该微单元为正四面体结构；
所述胶层包括交错排列的第二微单元，该第二微单元包括对角交错设置的四棱锥结构1，在该四棱锥结构1的顶部切割形成平面，从该平面向外生成有圆台3，在该四棱锥结构1的侧面的斜边均匀设置有三棱锥结构2，所述圆台3顶部向内凹陷。所述圆台3凹陷深度≥0.01mm。
所述三棱锥结构2的pitch为0.010mm-0.050mm。
其中，在本实施例中，所述底层为转蓝光材质，该底层包括蓝光转化剂。
所述转蓝光材质为PC、PMMA、PS中的一种或者几种，所述底材的厚度≥0.050mm。
所述转蓝光剂为荧光粉或者量子点，所述荧光粉为硅酸盐、氮氧化物绿粉、氮化物红粉、YAG黄粉中的一种或者几种。
所述荧光粉含量在底材中的分散比例为70％-100％。
所述量子点含量在底材中的分散比例为50％-100％。
第二微单元的结构到聚光作用和散热作用，正四面体结构起稳固加强作用，相互交错的四棱锥将Mini/Micro-LED灯板上发射的光打散，模糊化灯影，降低灯影可见率，在正四面体的底端涂覆有蓝光转化剂。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
Claims (9)
1.一种复合型分光膜片，其特征在于：包括底层、基层和胶层；
所述基层位于所述底层和胶层之间，所述底层包括排列的第一微单元，该微单元为正四面体结构；
所述胶层包括交错排列的第二微单元，该第二微单元包括对角交错设置的四棱锥结构，在该四棱锥结构的顶部切割形成平面，从该平面向外生成有圆台，在该四棱锥结构的侧面的斜边均匀设置有三棱锥结构，所述圆台顶部向内凹陷。
2.根据权利要求1所述一种复合型分光膜片，其特征在于：所述底层为转蓝光材质，该底层包括蓝光转化剂。
3.根据权利要求2所述一种复合型分光膜片，其特征在于：所述转蓝光材质为PC、PMMA、PS中的一种或者几种，所述底材的厚度≥0.050mm。
4.根据权利要求3所述一种复合型分光膜片，其特征在于：所述转蓝光剂为荧光粉或者量子点，所述荧光粉为硅酸盐、氮氧化物绿粉、氮化物红粉、YAG黄粉中的一种或者几种。
5.根据权利要求4所述一种复合型分光膜片，其特征在于：所述荧光粉含量在底材中的分散比例为70％-100％。
6.根据权利要求4所述一种复合型分光膜片，其特征在于：所述量子点含量在底材中的分散比例为50％-100％。
7.根据权利要求4所述一种复合型分光膜片，其特征在于：所述基材的厚度≥0.05mm。
8.根据权利要求4所述一种复合型分光膜片，其特征在于：所述圆台凹陷深度≥0.01mm。
9.根据权利要求4所述一种复合型分光膜片，其特征在于：所述三棱锥结构的pitch为0.010mm-0.050mm。
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