CN112255842A - 一种基于四晶串蓝光led搭配黄色荧光背光模组 - Google Patents
一种基于四晶串蓝光led搭配黄色荧光背光模组 Download PDFInfo
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Abstract
本发明公开一种基于四晶串蓝光LED搭配黄色荧光背光模组,包括背板、PCB板、反射纸、LED灯珠、透镜、扩散板、量子点膜、棱镜片、扩散片、液晶屏、消光丝印;所述背板上设置有PCB板,PCB板上安装有LED灯珠、透镜;LED灯珠位于在透镜正下方;所述LED灯珠内设置有四个LED芯片,四个LED芯片在正极引脚、负极引脚之间串联连接;所述PCB板上安装有多个LED灯珠,LED灯珠外侧四周的PCB板上设置有黄色荧光丝印;黄色荧光丝印沿LED灯珠呈圆形矩阵排列;所述黄色荧光丝印的形状为矩形;所述透镜上设置依次有扩散板、量子点膜、棱镜片、扩散片、液晶屏。本发明具有亮度高,成本低,加工速度快,出光均匀的特点。
Description
技术领域
本发明涉及一种基于四晶串蓝光LED搭配黄色荧光背光模组,尤其是一种具有亮度高,成本低,加工速度快,出光均匀的基于四晶串蓝光LED搭配黄色荧光背光模组。
背景技术
随着当今社会的发展,电视行业也在国内得到了迅速的发展,因此电视相关的技术也在快速的更新中。在目前的电视行业中,背光模组是LCD电视的重要组成部分,为液晶提供高效的背光源。按照背光源的LED来分类可以分为:OLED和QLED,目前OLED背光源的技术已经成熟,QLED背光源的电视也已经进入量产阶段,但是由于扩板和亮度等原因的限制,QLED背光源还有很大的发展空间。QLED(Quantum Dot light Emitting Diode)即量子屏显示技术因其相较于传统LCD电视有较大优势:更高的背光源系统色彩转换效率、更低的制造成本等等,在国内市场发展迅速。QLED电视的背光源系统,采用蓝光LED发出蓝光,通过附有红色和绿色量子点的光学材料(QDEF膜片),得到高纯度白光,从而还原出色域更高的画面。
市场的背光LED多使用3V电压的晶片,为满足高亮度和高电压的要求,目前多采取高电压芯片来解决,高压芯片的开发难度较高,需要配合考虑支架、透镜等因素的影响。
QLED背光模组中需要将蓝光LED的光均匀的投布到QDEF膜片上,从而形成高质量的白光源,但是目前的折射或是反射式都会将很多的蓝光集中在透镜正上方,导致透镜上方偏蓝。对背光源的亮度要求越来越高,因此提高背光LED的亮度是目前重要的发展方向。
发明内容
本发明的目的在于提供一种具有亮度高,成本低,加工速度快,出光均匀的基于四晶串蓝光LED搭配黄色荧光背光模组。
本发明的目的可以通过以下技术方案实现:
一种基于四晶串蓝光LED搭配黄色荧光背光模组,包括背板、PCB板、反射纸、LED灯珠、透镜、扩散板、量子点膜、棱镜片、扩散片、液晶屏、消光丝印;
所述背板上设置有PCB板,PCB板上安装有LED灯珠、透镜;LED灯珠位于在透镜正下方;
所述LED灯珠内设置有四个LED芯片,四个LED芯片在正极引脚、负极引脚之间串联连接;
所述PCB板上安装有多个LED灯珠,LED灯珠外侧四周的PCB板上设置有黄色荧光丝印;黄色荧光丝印沿LED灯珠呈圆形矩阵排列;所述黄色荧光丝印的形状为矩形;
所述透镜上设置依次有扩散板、量子点膜、棱镜片、扩散片、液晶屏;
所述扩散板下方设置有消光丝印,消光丝印位于LED灯珠正上方,消光丝印的形状为圆形;消光丝印为黄色油墨丝印;
所述PCB板上表面设置有多个LED灯珠焊盘,多个LED灯珠焊盘沿PCB板呈矩阵排列;LED灯珠焊盘外侧设置有透镜固定柱定位区;LED灯珠焊盘外侧的PCB板周边设置有第一测试点定位区、第二测试点;两个第二测试点分布在透镜两侧的PCB板上表面;第一测试点定位区位于透镜一侧的PCB板上表面;第一测试点定位区内层设置有导电层;第一测试点、第二测试点、LED灯珠焊盘均贯穿PCB板上表面,并与PCB板内的导电层连通;
所述LED灯珠包括LED支架,LED支架上表面设置有凹槽,凹槽底侧设置有正极引脚、负极引脚;正极引脚、负极引脚之间设置有绝缘条;负极引脚上表面安装有四个LED芯片,LED芯片之间通过金线串联连接到正极引脚、负极引脚上;凹槽内侧壁的LED支架上形成,自下往上向外倾斜面;正极引脚、负极引脚底端延伸到LED支架外侧;
所述黄色荧光丝印包括反光层、黄色荧光层,反光层位于PCB板上表面,黄色荧光层位于反光层上表面;反光层上表面设置有反光层微棱镜,反光层微棱镜为锯齿状冷静结构;微棱锥出光面上表面设置为若干微锥形粗糙面;
所述反光层微棱镜的齿尖截面角度5~15°;
所述反光层由紫外固化胶水制成,紫外固化胶水通过丝网印刷到PCB板上表面,随后快速采用紫外光照射固化,在反光层上表面形成反光层微棱镜;所述黄色荧光层由紫外固化胶水和黄色荧光粉混合制成,反光层上表面再通过紫外固化胶水和黄色荧光粉混合浆料丝网印刷,再通过紫外光照射固化形成反光层、微棱锥出光面。
本发明提供了一种基于四晶串蓝光LED搭配黄色荧光背光模组,具有亮度高,成本低,加工速度快,出光均匀的特点。本发明的有益效果:通过四个LED芯片串联连接的方式,提升LED灯珠的亮度和电压,替代高成本的高压芯片,降低产品研发成本;
LED灯珠内的LED芯片发出蓝光,从LED灯珠上方照射出;LED灯珠照射出的白光经折射式透镜或反射式透镜扩散,容易在透镜正上方的扩散板周边区域和透镜正上方的扩散板区域产生蓝光;LED灯珠上方发出的蓝光,经LED灯珠周边PCB板上预设的黄色荧光丝印,减弱蓝光强度,使LED灯珠照射到扩散板上的蓝光无局部能量过强,导致经量子点膜混光不均匀的情况,提升背光模组的出光均匀度;
LED灯珠发出的光经透镜折射或散射之后,在透镜正上方的出光能量最高,通过消光丝印减弱蓝光在该区域的能量,以提升该区域的出光均匀效果;
电流通过LED灯珠焊盘与正极引脚、负极引脚、金线形成回路,点亮LED芯片;LED芯片发出蓝光经凹槽内的透明胶从凹槽上方射出;LED芯片照射到聚光反射内壁上的蓝光,经聚光反射内壁反射后并从凹槽上方射出;提升凹槽的出光率;四个LED芯片提升LED灯珠的亮度,增强背光模组的最高显示亮度,提升背光模组的强光可视性;降低相同亮度LED芯片的成本和良品率,大大缩减研发成本;
反光层微棱镜为锯齿状冷静结构,尖锐的齿尖利用入光的全反射,增强黄色荧光丝印出光率,减小光能损耗;微棱锥出光面上表面设置为若干微锥形粗糙面,微棱锥出光面利用丝印特性,调节黄色荧光浆料、丝网孔隙和固化时间,在微棱锥出光面表面形成微锥形粗糙面,提升黄色荧光丝印内黄光从微棱锥出光面表面出光时的漫反射效果,利于均匀分散黄色荧光丝印反射的黄光,进一步提升背光模组的出光均匀性。
附图说明
为了便于本领域技术人员理解,下面结合附图对本发明作进一步的说明。
图1为本发明一种基于四晶串蓝光LED搭配黄色荧光背光模组的PCB板结构示意图;
图2为本发明一种基于四晶串蓝光LED搭配黄色荧光背光模组的PCB板侧截面图;
图3为本发明一种基于四晶串蓝光LED搭配黄色荧光背光模组的LED灯珠结构示意图;
图4为本发明一种基于四晶串蓝光LED搭配黄色荧光背光模组的结构示意图;
图5为图2的A处放大图。
具体实施方式
本发明的目的可以通过以下技术方案实现:
一种基于四晶串蓝光LED搭配黄色荧光背光模组,参见图1~5,包括背板1、PCB板2、反射纸3、LED灯珠4、透镜5、扩散板6、量子点膜7、棱镜片8、扩散片9、液晶屏10、消光丝印11;
所述背板1上设置有PCB板2,PCB板2上安装有LED灯珠4、透镜5;LED灯珠4位于在透镜5正下方;
所述LED灯珠4内设置有四个LED芯片46,四个LED芯片46在正极引脚43、负极引脚44之间串联连接;通过四个LED芯片46串联连接的方式,提升LED灯珠4的亮度和电压,替代高成本的高压芯片,降低产品研发成本;
所述PCB板2上安装有多个LED灯珠4,LED灯珠4外侧四周的PCB板2上设置有黄色荧光丝印26;黄色荧光丝印26沿LED灯珠4呈圆形矩阵排列;所述黄色荧光丝印26的形状为矩形;LED灯珠4内的LED芯片46发出蓝光,从LED灯珠4上方照射出;LED灯珠4照射出的白光经折射式透镜或反射式透镜扩散,容易在透镜5正上方的扩散板6周边区域和透镜5正上方的扩散板6区域产生蓝光;LED灯珠4上方发出的蓝光,经LED灯珠4周边PCB板2上预设的黄色荧光丝印26,减弱蓝光强度,使LED灯珠4照射到扩散板6上的蓝光无局部能量过强,导致经量子点膜7混光不均匀的情况,提升背光模组的出光均匀度;
所述透镜5上设置依次有扩散板6、量子点膜7、棱镜片8、扩散片9、液晶屏10;扩散板6将透镜5扩散后照射上的蓝光均匀分散后,照射到量子点膜7内;蓝光激发量子点膜7内量子点荧光材料,分别形成红光、绿光,红光、绿光与蓝光混光形成白光,并从量子点膜7上表面射出进入棱镜片8内;棱镜片8表面设置有微棱镜结构,微棱镜结构的几何光学作用,从棱镜片8上表面正视方向射出进入扩散片9内;扩散片9对入射的光进一步均匀扩散后,照射到液晶屏10上,照亮液晶屏10上显示的内容;
所述扩散板6下方设置有消光丝印11,消光丝印11位于LED灯珠4正上方,消光丝印11的形状为圆形;消光丝印11为黄色油墨丝印;LED灯珠4发出的光经透镜5折射或散射之后,在透镜5正上方的出光能量最高,通过消光丝印11减弱蓝光在该区域的能量,以提升该区域的出光均匀效果;
所述PCB板2上表面设置有多个LED灯珠焊盘22,多个LED灯珠焊盘22沿PCB板2呈矩阵排列;LED灯珠焊盘22外侧设置有透镜固定柱定位区23,透镜5通过胶粘粘在透镜固定柱定位区23上;LED灯珠焊盘22外侧的PCB板2周边设置有第一测试点定位区21、第二测试点25;两个第二测试点25分布在透镜5两侧的PCB板2上表面;第一测试点定位区21位于透镜5一侧的PCB板2上表面;第一测试点定位区21内层设置有导电层27;第一测试点24、第二测试点25、LED灯珠焊盘22均贯穿PCB板2上表面,并与PCB板2内的导电层27连通;PCB板2通过驱动电源供电,点亮PCB板2上的多个LED灯珠4,使该背光模组工作显示;工作人员通过LED灯珠焊盘22两侧相邻的两个第二测试点25,对两个第二测试点25间的LED灯珠4检测;通过PCB板2一端设置的检测点与PCB板2上的某一第二测试点25,检测该检测点与第二测试点25之间的LED灯珠4与导电层27组成的电路,方便工作人员快速对PCB板2和PCB板2上的LED灯珠4进行检修;
所述LED灯珠4包括LED支架41,LED支架41上表面设置有凹槽42,凹槽42底侧设置有正极引脚43、负极引脚44;正极引脚43、负极引脚44之间设置有绝缘条;负极引脚44上表面安装有四个LED芯片46,LED芯片46之间通过金线47串联连接到正极引脚43、负极引脚44上;凹槽42内侧壁的LED支架41上形成,自下往上向外倾斜面;正极引脚43、负极引脚44底端延伸到LED支架41外侧;电流通过LED灯珠焊盘22与正极引脚43、负极引脚44、金线47形成回路,点亮LED芯片46;LED芯片46发出蓝光经凹槽42内的透明胶从凹槽42上方射出;LED芯片46照射到聚光反射内壁45上的蓝光,经聚光反射内壁45反射后并从凹槽42上方射出;提升凹槽42的出光率;四个LED芯片46提升LED灯珠4的亮度,增强背光模组的最高显示亮度,提升背光模组的强光可视性;降低相同亮度LED芯片的成本和良品率,大大缩减研发成本;
所述黄色荧光丝印26包括反光层261、黄色荧光层262,反光层261位于PCB板2上表面,黄色荧光层262位于反光层261上表面;反光层261上表面设置有反光层微棱镜263,反光层微棱镜263为锯齿状冷静结构,尖锐的齿尖利用入光的全反射,增强黄色荧光丝印26出光率,减小光能损耗;微棱锥出光面264上表面设置为若干微锥形粗糙面,微棱锥出光面264利用丝印特性,调节黄色荧光浆料、丝网孔隙和固化时间,在微棱锥出光面264表面形成微锥形粗糙面,提升黄色荧光丝印26内黄光从微棱锥出光面264表面出光时的漫反射效果,利于均匀分散黄色荧光丝印26反射的黄光,进一步提升背光模组的出光均匀性;
所述反光层微棱镜263的齿尖截面角度5~15°;
所述反光层261由紫外固化胶水制成,紫外固化胶水通过丝网印刷到PCB板2上表面,随后快速采用紫外光照射固化,在反光层261上表面形成反光层微棱镜263;所述黄色荧光层262由紫外固化胶水和黄色荧光粉混合制成,反光层261上表面再通过紫外固化胶水和黄色荧光粉混合浆料丝网印刷,再通过紫外光照射固化形成反光层261、微棱锥出光面264;黄色荧光丝印26通过紫外固化,缩短固化加工时间。
本发明的工作原理:
本发明在背板1上设置有PCB板2,PCB板2上安装有LED灯珠4、透镜5;LED灯珠4位于在透镜5正下方;
通过四个LED芯片46串联连接的方式,提升LED灯珠4的亮度和电压,替代高成本的高压芯片,降低产品研发成本;
LED灯珠4内的LED芯片46发出蓝光,从LED灯珠4上方照射出;LED灯珠4照射出的白光经折射式透镜或反射式透镜扩散,容易在透镜5正上方的扩散板6周边区域和透镜5正上方的扩散板6区域产生蓝光;LED灯珠4上方发出的蓝光,经LED灯珠4周边PCB板2上预设的黄色荧光丝印26,减弱蓝光强度,使LED灯珠4照射到扩散板6上的蓝光无局部能量过强,导致经量子点膜7混光不均匀的情况,提升背光模组的出光均匀度;
扩散板6将透镜5扩散后照射上的蓝光均匀分散后,照射到量子点膜7内;蓝光激发量子点膜7内量子点荧光材料,分别形成红光、绿光,红光、绿光与蓝光混光形成白光,并从量子点膜7上表面射出进入棱镜片8内;棱镜片8表面设置有微棱镜结构,微棱镜结构的几何光学作用,从棱镜片8上表面正视方向射出进入扩散片9内;扩散片9对入射的光进一步均匀扩散后,照射到液晶屏10上,照亮液晶屏10上显示的内容;
LED灯珠4发出的光经透镜5折射或散射之后,在透镜5正上方的出光能量最高,通过消光丝印11减弱蓝光在该区域的能量,以提升该区域的出光均匀效果;
PCB板2通过驱动电源供电,点亮PCB板2上的多个LED灯珠4,使该背光模组工作显示;工作人员通过LED灯珠焊盘22两侧相邻的两个第二测试点25,对两个第二测试点25间的LED灯珠4检测;通过PCB板2一端设置的检测点与PCB板2上的某一第二测试点25,检测该检测点与第二测试点25之间的LED灯珠4与导电层27组成的电路,方便工作人员快速对PCB板2和PCB板2上的LED灯珠4进行检修;
电流通过LED灯珠焊盘22与正极引脚43、负极引脚44、金线47形成回路,点亮LED芯片46;LED芯片46发出蓝光经凹槽42内的透明胶从凹槽42上方射出;LED芯片46照射到聚光反射内壁45上的蓝光,经聚光反射内壁45反射后并从凹槽42上方射出;提升凹槽42的出光率;四个LED芯片46提升LED灯珠4的亮度,增强背光模组的最高显示亮度,提升背光模组的强光可视性;降低相同亮度LED芯片的成本和良品率,大大缩减研发成本;
反光层微棱镜263为锯齿状冷静结构,尖锐的齿尖利用入光的全反射,增强黄色荧光丝印26出光率,减小光能损耗;微棱锥出光面264上表面设置为若干微锥形粗糙面,微棱锥出光面264利用丝印特性,调节黄色荧光浆料、丝网孔隙和固化时间,在微棱锥出光面264表面形成微锥形粗糙面,提升黄色荧光丝印26内黄光从微棱锥出光面264表面出光时的漫反射效果,利于均匀分散黄色荧光丝印26反射的黄光,进一步提升背光模组的出光均匀性。
本发明提供了一种基于四晶串蓝光LED搭配黄色荧光背光模组,具有亮度高,成本低,加工速度快,出光均匀的特点。本发明的有益效果:通过四个LED芯片串联连接的方式,提升LED灯珠的亮度和电压,替代高成本的高压芯片,降低产品研发成本;
LED灯珠内的LED芯片发出蓝光,从LED灯珠上方照射出;LED灯珠照射出的白光经折射式透镜或反射式透镜扩散,容易在透镜正上方的扩散板周边区域和透镜正上方的扩散板区域产生蓝光;LED灯珠上方发出的蓝光,经LED灯珠周边PCB板上预设的黄色荧光丝印,减弱蓝光强度,使LED灯珠照射到扩散板上的蓝光无局部能量过强,导致经量子点膜混光不均匀的情况,提升背光模组的出光均匀度;
LED灯珠发出的光经透镜折射或散射之后,在透镜正上方的出光能量最高,通过消光丝印减弱蓝光在该区域的能量,以提升该区域的出光均匀效果;
电流通过LED灯珠焊盘与正极引脚、负极引脚、金线形成回路,点亮LED芯片;LED芯片发出蓝光经凹槽内的透明胶从凹槽上方射出;LED芯片照射到聚光反射内壁上的蓝光,经聚光反射内壁反射后并从凹槽上方射出;提升凹槽的出光率;四个LED芯片提升LED灯珠的亮度,增强背光模组的最高显示亮度,提升背光模组的强光可视性;降低相同亮度LED芯片的成本和良品率,大大缩减研发成本;
反光层微棱镜为锯齿状冷静结构,尖锐的齿尖利用入光的全反射,增强黄色荧光丝印出光率,减小光能损耗;微棱锥出光面上表面设置为若干微锥形粗糙面,微棱锥出光面利用丝印特性,调节黄色荧光浆料、丝网孔隙和固化时间,在微棱锥出光面表面形成微锥形粗糙面,提升黄色荧光丝印内黄光从微棱锥出光面表面出光时的漫反射效果,利于均匀分散黄色荧光丝印反射的黄光,进一步提升背光模组的出光均匀性。
以上内容仅仅是对本发明结构所作的举例和说明,所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,只要不偏离发明的结构或者超越本权利要求书所定义的范围,均应属于本发明的保护范围。
Claims (8)
1.一种基于四晶串蓝光LED搭配黄色荧光背光模组,包括背板(1)、PCB板(2)、反射纸(3)、LED灯珠(4)、透镜(5)、扩散板(6)、量子点膜(7)、棱镜片(8)、扩散片(9)、液晶屏(10)、消光丝印(11),其特征在于;
所述背板(1)上设置有PCB板(2),PCB板(2)上安装有LED灯珠(4)、透镜(5);LED灯珠(4)位于在透镜(5)正下方;
所述LED灯珠(4)内设置有四个LED芯片(46),四个LED芯片(46)在正极引脚(43)、负极引脚(44)之间串联连接;
所述PCB板(2)上安装有多个LED灯珠(4),LED灯珠(4)外侧四周的PCB板(2)上设置有黄色荧光丝印(26);黄色荧光丝印(26)沿LED灯珠(4)呈圆形矩阵排列;所述黄色荧光丝印(26)的形状为矩形。
2.根据权利要求1所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述透镜(5)上设置依次有扩散板(6)、量子点膜(7)、棱镜片(8)、扩散片(9)、液晶屏(10)。
3.根据权利要求1所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述扩散板(6)下方设置有消光丝印(11),消光丝印(11)位于LED灯珠(4)正上方,消光丝印(11)的形状为圆形;消光丝印(11)为黄色油墨丝印。
4.根据权利要求1所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述PCB板(2)上表面设置有多个LED灯珠焊盘(22),多个LED灯珠焊盘(22)沿PCB板(2)呈矩阵排列;LED灯珠焊盘(22)外侧设置有透镜固定柱定位区(23);LED灯珠焊盘(22)外侧的PCB板(2)周边设置有第一测试点定位区(21)、第二测试点(25);两个第二测试点(25)分布在透镜(5)两侧的PCB板(2)上表面;第一测试点定位区(21)位于透镜(5)一侧的PCB板(2)上表面;第一测试点定位区(21)内层设置有导电层(27);第一测试点(24)、第二测试点(25)、LED灯珠焊盘(22)均贯穿PCB板(2)上表面,并与PCB板(2)内的导电层(27)连通。
5.根据权利要求1所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述LED灯珠(4)包括LED支架(41),LED支架(41)上表面设置有凹槽(42),凹槽(42)底侧设置有正极引脚(43)、负极引脚(44);正极引脚(43)、负极引脚(44)之间设置有绝缘条;负极引脚(44)上表面安装有四个LED芯片(46),LED芯片(46)之间通过金线(47)串联连接到正极引脚(43)、负极引脚(44)上;凹槽(42)内侧壁的LED支架(41)上形成,自下往上向外倾斜面;正极引脚(43)、负极引脚(44)底端延伸到LED支架(41)外侧。
6.根据权利要求1所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述黄色荧光丝印(26)包括反光层(261)、黄色荧光层(262),反光层(261)位于PCB板(2)上表面,黄色荧光层(262)位于反光层(261)上表面;反光层(261)上表面设置有反光层微棱镜(263),反光层微棱镜(263)为锯齿状冷静结构;微棱锥出光面(264)上表面设置为若干微锥形粗糙面。
7.根据权利要求6所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述反光层微棱镜(263)的齿尖截面角度5~15°。
8.根据权利要求6所述的一种基于四晶串蓝光LED搭配黄色荧光背光模组,其特征在于,所述反光层(261)由紫外固化胶水制成,紫外固化胶水通过丝网印刷到PCB板(2)上表面,随后快速采用紫外光照射固化,在反光层(261)上表面形成反光层微棱镜(263);所述黄色荧光层(262)由紫外固化胶水和黄色荧光粉混合制成,反光层(261)上表面再通过紫外固化胶水和黄色荧光粉混合浆料丝网印刷,再通过紫外光照射固化形成反光层(261)、微棱锥出光面(264)。
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CN113009605A (zh) * | 2021-03-19 | 2021-06-22 | 苏州维旺科技有限公司 | 一种Mini LED微透镜匀光片及其制备工艺、背光模组 |
CN113156550A (zh) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | 一种Mini LED匀光片及其制备工艺、背光模组 |
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CN113009605A (zh) * | 2021-03-19 | 2021-06-22 | 苏州维旺科技有限公司 | 一种Mini LED微透镜匀光片及其制备工艺、背光模组 |
CN113156550A (zh) * | 2021-03-19 | 2021-07-23 | 苏州维旺科技有限公司 | 一种Mini LED匀光片及其制备工艺、背光模组 |
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