CN215007272U - 光源模块 - Google Patents
光源模块 Download PDFInfo
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- CN215007272U CN215007272U CN202121089572.3U CN202121089572U CN215007272U CN 215007272 U CN215007272 U CN 215007272U CN 202121089572 U CN202121089572 U CN 202121089572U CN 215007272 U CN215007272 U CN 215007272U
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
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- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
- F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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Abstract
本实用新型提供一种光源模块。光源模块包括至少一发光元件、第一光学层、穿透光选择层、第二光学层、分光层以及波长转换层。至少一发光元件用以提供光束,光束的波长落于第一波段内。光束离开第一光学层时的出射角大于光束入射第一光学层时的入射角。穿透光选择层能够使波长落于一第二波段内的光穿透,对于波长落于第一波段内且以不同入射角入射的光具有对应的穿透率。当光束入射第二光学层时,光束离开第二光学层的出射角小于光束入射第二光学层的入射角。本实用新型提出的光源模块能够提供良好均匀度的光束。
Description
技术领域
本实用新型关于一种光学模块,且特别是关于一种光源模块。
背景技术
一般而言,应用于平面显示器的直下式背光模块是以二维排列的发光二极管灯板放置于背光模块的背板上,利用发光二极管的投影光型搭配光学膜片与光学板材以产生背光模块均匀发光面的特性,现行的次毫米发光二极管(MINI-LED)背光模块亦为直下式背光模块的一种实施方式。
一般而言,直下式的背光模块在光源与膜片之间需要一个光程距离(opticaldistance,OD),此光程距离存在的目的是为了使由光源辐射出的光线能够较为均匀的投影在膜片上,较大的光程距离会在膜片上投影出较大的光斑,因此在相同面积且相同均匀度的背光模块中,具有较大光程距离的模块所使用的发光二极管的颗数可以比较少,其成本也相对低廉,然而光程距离条件与模块厚度为正相关,厚度敏感的产品(ex.手机、平板、笔记型电脑等等)因条件限制无法使用较大的光程距离,往往需要添加较多光学膜片以及增加发光二极管的颗数来使均匀度提升,而此举会造成成本的增加,也会无法有效降低光学膜片所形成的堆迭厚度。并且,当发光二极管的颗数增加时,也会造成发光二极管所形成的灯源的打件的困难。
此外,为解决发光二极管所需数目过多的问题,已知一种发光二极管搭配导光斜面的直下式架构(包含Mini-LED),然此架构需要导光侧墙等结构因此无法有效的降低模块厚度,同时亦存在反射面与发光二极管的对位问题。
“背景技术”段落只是用来帮助了解本实用新型内容,因此在“背景技术”段落所公开的内容可能包含一些没有构成本领域技术人员所知道的现有技术。在“背景技术”段落所公开的内容,不代表该内容或者本实用新型一个或多个实施例所要解决的问题,在本实用新型申请前已被本领域技术人员所知晓或认知。
实用新型内容
本实用新型提供一种光源模块,能够提供具有良好均匀度的光束,且具有小的光程距离以及低廉的成本。
本实用新型的其他目的和优点可以从本实用新型所公开的技术特征中得到进一步的了解。
为达到上述之一或部分或全部目的或是其他目的,本实用新型的一实施例提出一种光源模块。光源模块包括至少一发光元件、第一光学层、穿透光选择层、第二光学层、分光层以及波长转换层。至少一发光元件用以提供光束,光束的波长落于第一波段内。第一光学层位于光束的传递路径上,其中光束离开第一光学层时的出射角大于光束入射第一光学层时的入射角。穿透光选择层位于光束的传递路径上,其中穿透光选择层能够使波长落于一第二波段内的光穿透,对于波长落于第一波段内且以不同入射角入射的光具有对应的穿透率。第二光学层位于光束的传递路径上,其中穿透光选择层位于第一光学层与第二光学层之间,且当光束入射第二光学层时,光束离开第二光学层的出射角小于光束入射第二光学层的入射角。分光层位于光束的传递路径上,其中分光层能够使波长落于第一波段内的光穿透,并反射波长落于第二波段内的光。波长转换层位于光束的传递路径上,用于使一部分的光束转换为转换光束,转换光束的波长落于第二波段内。
基于上述,本实用新型的实施例至少具有以下其中一个优点或功效。在本实用新型的实施例中,通过第一光学层、穿透光选择层以及第二光学层的配置,光源模块可使得发光元件辐射出的正向视角以及小角度的光线能够在光源模块的腔体内被传递的更远,并借此提升照明光束的均匀度,进而可以提高发光元件的间距以及降低光源模块的光程距离,以降低模块厚度以及产品成本。并且,光源模块可通过分光层的配置增加照明光束的亮度。
为让本实用新型的上述特征和优点能更明显易懂,下文特举实施例,并配合附图作详细说明如下。
附图说明
图1A是依照本实用新型一实施例的一种光源模块的剖面示意图。
图1B是图1A的一种第一光学层的剖面示意图。
图1C是图1A的一种第二光学层的剖面示意图。
图2A是图1A的穿透光选择层对于波长落于第一波段内的光的入射角与穿透率的关系图。
图2B是图1A的光源模块对于以正向视角入射的光的波长与穿透率的关系图。
图2C是图1A的分光层对于入射光的波长与穿透率的关系图。
图3是依照本实用新型一实施例的另一种光源模块的剖面示意图。
图4是依照本实用新型一实施例的又一种光源模块的剖面示意图。
图5是依照本实用新型一实施例的又一种光源模块的剖面示意图。
图6是依照本实用新型一实施例的又一种光源模块的剖面示意图。
附图标记列表
100、300、400、500、600:光源模块
110:发光元件
120、320S:第一光学层
130、320、430:穿透光选择层
140、430S:第二光学层
150:分光层
160:波长转换层
570:光学膜
L1:光束
L2:转换光束。
具体实施方式
有关本实用新型的前述及其他技术内容、特点与功效,在以下配合参考附图的一优选实施例的详细说明中,将可清楚的呈现。以下实施例中所提到的方向用语,例如:上、下、左、右、前或后等,仅是参考附图的方向。因此,使用的方向用语是用来说明并非用来限制本实用新型。
图1A是依照本实用新型一实施例的一种光源模块的剖面示意图。图1B是图1A的第一光学层的剖面示意图。图1C是图1A的第二光学层的剖面示意图。请参照图1A至图1C,在本实施例中,光源模块100包括至少一发光元件110、第一光学层120、穿透光选择层130、第二光学层140、分光层150以及波长转换层160。在本实施例中,光源模块100为直下式背光模块。举例而言,发光元件110可采用发光二极管(LED)、次毫米发光二极管(mini LED)或微发光二极管(micro LED)等类型的发光元件,而可用以提供光束L1。并且,至少一发光元件110可位于具有高反射率的白色油墨的电路板上,其白色油墨的反射率大于50%,较佳为90%,而可用以将传递方向为远离出光面的光束(图未示)反射至朝向出光面的方向。进一步而言,在本实施例中,光束L1的波长落于第一波段内,第一波段例如是介于380纳米至500纳米的波段范围。即,在本实施例中,光束L1为蓝光,且发光元件110所提供的光束L1具有大视角,其光形峰值介于30度至90度,较佳为40度至60度,其光形例如为蝠翼型,但不限于此。
具体而言,如图1A所示,第一光学层120、穿透光选择层130、第二光学层140以及分光层150位于光束L1的传递路径上。举例而言,如图1B及图1C所示,在本实施例中,第一光学层120与第二光学层140具有多个呈阵列排列的光学微结构,且各光学微结构呈多面体状(例如四面体状),而可用以调整入射光束L1的视角,但本实用新型不局限于此。在其他的实施例中,第一光学层120与第二光学层140也可为棱镜片。
进一步来说,第一光学层120的光学微结构的顶角角度介于60度至150度,较佳为小于90度。并且,第一光学层120的光学微结构的顶角朝向光束L1设置(例如第一光学层120的光学微结构设置于第一光学层120朝向发光元件100的一侧,其顶角朝向发光元件110)。如此,如图1A与图1B所示,光束L1离开第一光学层120时的出射角大于光束L1入射第一光学层120时的入射角,且在特定的光束L1的入射条件时,适于将光束L1进行分光。相对地,如图1C所示,第二光学层140的光学微结构的顶角角度介于60度至150度,较佳为小于90度,然而,第二光学层140的光学微结构的顶角背离光束L1而设置(例如第二光学层140的光学微结构设置于第二光学层140远离发光元件100的一侧,其顶角背离发光元件110)。如此,如图1A与图1C所示,当光束L1入射第二光学层140时,光束L1离开第二光学层140的出射角小于光束L1入射第二光学层140的入射角。
图2A是图1A的穿透光选择层对于波长落于第一波段内的光的入射角与穿透率的关系图。图2B是图1A的光源模块对于以正向视角入射的光的波长与穿透率的关系图。图2C是图1A的分光层对于入射光的波长与穿透率的关系图。请参照图1A、图2A至图2C,在本实施例中,穿透光选择层130位于第一光学层120与第二光学层140之间,且穿透光选择层130能够使波长落于第二波段内的光穿透。举例而言,在本实施例中,第二波段例如是介于500纳米至780纳米的波段范围。并且,如图2A所示,穿透光选择层130对于波长落于第一波段内且以不同入射角入射的光具有对应的穿透率。在本实施例中,穿透光选择层130对于波长落于第一波段内的光形成一入射角对穿透率的分布曲线,入射角对穿透率的分布曲线具有至少一穿透率峰值(例如为两个穿透率峰值),至少一穿透率峰值一对一地分别对应于至少一第一入射角,且至少一第一入射角的范围介于30度至90度之间,较佳为介于40度至60度之间。并且,如图2A与图2B所示,在本实施例中,上述的穿透光选择层130对于波长落于第一波段内且正向入射的光的穿透率小于40%。
如此,由发光元件110辐射出的正向视角以及小角度(例如0度至10度)的光束L1会先透过第一光学层120被调整至较大的角度范围(例如5度至40度)之后再经过穿透光选择层130的筛选,依据不同的光线入射角度,光束L1的一部分会穿过穿透光选择层130,而光束L1的另一部分会被穿透光选择层130向下反射并再次射入光源模块100的腔体。这些被穿透光选择层130反射的光束L1碰到电路板上的白色油墨时会被漫反射,漫反射的光束L1具有角度分布,并再度被传递至第一光学层120以及穿透光选择层130,如此,光束L1在光源模块100的腔体内重复上述过程,发光元件110辐射出的正向视角以及小角度的光束L1在光源模块100的腔体内传递的路径更长。
另一方面,由发光元件110辐射出的大角度光束L1(例如10度至30度)在通过第一光学层120之后会被调整至更大的角度范围(例如40度至60度)之后再入射至穿透光选择层130,并且,大部分光束L1可穿过穿透光选择层130且入射第二光学层140,如此,通过第二光学层140的光束L1能够被调整至正向视角,并且被传递至分光层150以及波长转换层160。
并且,在本实施例中,分光层150位于波长转换层160与第二光学层140之间,第二光学层140位于分光层150与穿透光选择层130之间,且如图2C所示,在本实施例中,分光层150能够使波长落于第一波段(例如介于380纳米至500纳米的波段范围)内的光穿透,并反射波长落于第二波段(例如介于550纳米至780纳米的波段范围)内的光。也就是说,在本实施例中,分光层150为能够反射红光与绿光并使蓝光穿透的分光镜。另一方面,波长转换层160位于光束L1的传递路径上,用于使一部分的光束L1转换为转换光束L2,转换光束L2的波长落于第二波段内。也就是说,在本实施例中,转换光束L2为红光与绿光。
如此,通过第一光学层120、穿透光选择层130以及第二光学层140而被调整至正向视角的光束L1的一部分,在通过分光层150之后会激发波长转换层160进而产生转换光束L2,而可作为光源模块100所提供的照明光束的红光与绿光部分。并且,通过第一光学层120、穿透光选择层130以及第二光学层140的光束L1的另一部分可作为光源模块100所提供的照明光束的蓝光部分,而可与转换光束L2混合以形成白光,并借此可用以提供外界均匀的照明光束。并且,由于转换光束L2传播的方向为随机的,而向下传递的部分转换光束L2可通过分光层150而被反射,因此,光学模块所提供的照明光束的亮度可借此增加。
如此一来,通过第一光学层120、穿透光选择层130以及第二光学层140的配置,光源模块100可使得发光元件110辐射出的正向视角以及小角度的光束L1在光源模块100的腔体内传递的路径更长,并借此提升照明光束的均匀度,进而可以提高发光元件110的间距以及降低光源模块100所需的光程距离,以降低模块厚度以及产品成本。并且,光源模块100可通过分光层150的配置增加照明光束的亮度。
并且,值得注意的是,在本实施例中,第一光学层120、第二光学层140与穿透光选择层130为彼此分离的不同膜层,但本实用新型不局限于此。在其他的实施例中,第一光学层120与第二光学层140的至少其中一个可为穿透光选择层130的表面结构层,而与穿透光选择层130一体成形。以下将搭配图3至图5来进行进一步的解说。
图3是依照本实用新型一实施例的一种光源模块的剖面示意图。请参照图3,本实施例的光源模块300与图1的光源模块100类似,而差异如下所述。在本实施例中,第一光学层320S为穿透光选择层320的表面结构层。
如此,光源模块300仍可通过第一光学层320S、穿透光选择层320以及第二光学层140的配置,来使得发光元件110辐射出的正向视角以及小角度的光束L1在光源模块300的腔体内传递的路径更长。因此,光源模块300也能达到与图1的光源模块100类似的功能,而能达到与光源模块100类似的效果与优点,在此就不再赘述。
图4是依照本实用新型一实施例的一种光源模块的剖面示意图。请参照图4,本实施例的光源模块400与图1的光源模块100类似,而差异如下所述。在本实施例中,第二光学层430S为穿透光选择层430的表面结构层。
如此,光源模块400仍可通过第一光学层120、穿透光选择层430以及第二光学层430S的配置,来使得发光元件110辐射出的正向视角以及小角度的光束L1在光源模块400的腔体内传递的路径更长。因此,光源模块400也能达到与图1的光源模块100类似的功能,而能达到与光源模块100类似的效果与优点,在此就不再赘述。
图5是依照本实用新型一实施例的一种光源模块的剖面示意图。请参照图5,本实施例的光源模块500与图1的光源模块100类似,而差异如下所述。在本实施例中,第二光学层140位于波长转换层160与分光层150之间,分光层150位于第二光学层140与穿透光选择层130之间。
如此,光源模块500仍可通过第一光学层120、穿透光选择层130以及第二光学层140的配置,来使得发光元件110辐射出的正向视角以及小角度的光束L1在光源模块500的腔体内传递的路径更长。因此,光源模块500也能达到与图1的光源模块100类似的功能,而能达到与光源模块100类似的效果与优点,在此就不再赘述。
图6是依照本实用新型一实施例的一种光源模块的剖面示意图。请参照图6,本实施例的光源模块600与图1的光源模块100类似,而差异如下所述。在本实施例中,第一光学层120、第二光学层140、穿透光选择层130以及分光层150形成一光学膜570,且光学膜570对于波长介于480纳米至500纳米之间的光的穿透率大于50%,对于波长介于430纳米至460纳米之间的光的穿透率大于90%。并且,光学膜570能够反射发光波长落于第一波段外的光。也就是说,光学膜570为蓝光穿透带通滤波器,并且具有第一光学层120、第二光学层140、穿透光选择层130及分光层150的多合一功能。
如此,光源模块600可通过光学膜的配置,来使得发光元件110辐射出的正向视角以及小角度的光束L1在光源模块600的腔体内传递的路径更长。因此,光源模块600也能达到与图1的光源模块100类似的功能,而能达到与光源模块100类似的效果与优点,在此就不再赘述。
综上所述,本实用新型的实施例至少具有以下其中一个优点或功效。在本实用新型的实施例中,通过第一光学层、穿透光选择层以及第二光学层的配置,光源模块可使得发光元件辐射出的正向视角以及小角度的光束能够在光源模块的腔体内传递的路径更长,并借此提升照明光束的均匀度,进而可以提高发光元件的间距以及降低光源模块的光程距离,以降低模块厚度以及产品成本。并且,光源模块可通过分光层的配置增加照明光束的亮度。
以上所述,仅为本实用新型的优选实施例而已,不能以此限定本实用新型实施的范围,即凡是依照本实用新型权利要求书及说明书内容所作的简单的等效变化与修饰,皆仍属本实用新型专利涵盖的范围内。另外本实用新型的任一实施例或权利要求不须达到本实用新型所公开的全部目的或优点或特点。此外,说明书摘要和实用新型名称仅是用来辅助专利文件检索,并非用来限制本实用新型的权利范围。此外,本说明书或权利要求书中提及的“第一”、“第二”等用语仅用以命名元件(element)的名称或区别不同实施例或范围,而并非用来限制元件数量上的上限或下限。
Claims (10)
1.一种光源模块,其特征在于,所述光源模块包括至少一发光元件、第一光学层、穿透光选择层、第二光学层、分光层以及波长转换层,其中
所述至少一发光元件用以提供光束,所述光束的波长落于第一波段内;
所述第一光学层位于所述光束的传递路径上,其中所述光束离开所述第一光学层时的出射角大于所述光束入射所述第一光学层时的入射角;
所述穿透光选择层位于所述光束的传递路径上,其中所述穿透光选择层能够使波长落于第二波段内的光穿透,对于波长落于所述第一波段内且以不同入射角入射的光具有对应的穿透率;
所述第二光学层位于所述光束的传递路径上,其中所述穿透光选择层位于所述第一光学层与所述第二光学层之间,且当所述光束入射所述第二光学层时,所述光束离开所述第二光学层的出射角小于所述光束入射所述第二光学层的入射角;
所述分光层位于所述光束的传递路径上,其中所述分光层能够使波长落于所述第一波段内的光穿透,并反射波长落于所述第二波段内的光;以及
所述波长转换层位于所述光束的传递路径上,用于使一部分的所述光束转换为转换光束,所述转换光束的波长落于所述第二波段内。
2.根据权利要求1所述的光源模块,其特征在于,所述穿透光选择层对于波长落于所述第一波段内的光形成入射角对穿透率的分布曲线,所述入射角对穿透率的分布曲线具有至少一穿透率峰值,所述至少一穿透率峰值一对一地分别对应于至少一第一入射角,且所述至少一第一入射角的范围介于30度至90度之间,所述第一波段为波长介于380纳米至500纳米之间的波段,所述第二波段为波长介于500纳米至780纳米之间的波段。
3.根据权利要求2所述的光源模块,其特征在于,所述穿透光选择层对于波长落于所述第一波段内且正向入射的光的穿透率小于40%。
4.根据权利要求1所述的光源模块,其特征在于,所述分光层位于所述波长转换层与所述第二光学层之间,所述第二光学层位于所述分光层与所述穿透光选择层之间。
5.根据权利要求1所述的光源模块,其特征在于,所述第二光学层位于所述波长转换层与所述分光层之间,所述分光层位于所述第二光学层与所述穿透光选择层之间。
6.根据权利要求1所述的光源模块,其特征在于,所述第一光学层与所述第二光学层为棱镜片或具有多个呈阵列排列的光学微结构。
7.根据权利要求6所述的光源模块,其特征在于,各所述光学微结构呈多面体状,且各所述光学微结构的顶角介于60度至150度。
8.根据权利要求1所述的光源模块,其特征在于,所述第一光学层与所述第二光学层的至少其中一个为所述穿透光选择层的表面结构层。
9.根据权利要求1所述的光源模块,其特征在于,所述第一光学层、所述第二光学层与所述穿透光选择层为彼此分离的不同膜层。
10.根据权利要求1所述的光源模块,其特征在于,所述第一光学层、所述第二光学层、所述穿透光选择层以及所述分光层形成光学膜,且所述光学膜对于波长介于480纳米至500纳米之间的光的穿透率大于50%,对于波长介于430纳米至460纳米之间的光的穿透率大于90%。
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JP2008003232A (ja) * | 2006-06-21 | 2008-01-10 | Fujifilm Corp | 光学シート及び光学シートの製造方法、バックライト、液晶表示装置 |
US8629968B2 (en) * | 2011-07-13 | 2014-01-14 | Kyungpook National University Industry-Academic Cooperation | Liquid crystal display device |
US9810942B2 (en) * | 2012-06-15 | 2017-11-07 | Apple Inc. | Quantum dot-enhanced display having dichroic filter |
TWI539209B (zh) | 2015-04-09 | 2016-06-21 | 友達光電股份有限公司 | 背光模組 |
US9920907B2 (en) | 2015-11-04 | 2018-03-20 | Nichia Corporation | Light emitting device |
CN109654404A (zh) | 2017-10-12 | 2019-04-19 | 群创光电股份有限公司 | 显示设备 |
US11048121B2 (en) * | 2019-03-06 | 2021-06-29 | Sharp Kabushiki Kaisha | Lighting device and display device |
CN212229385U (zh) * | 2020-06-11 | 2020-12-25 | 扬昕科技(苏州)有限公司 | 背光模块及显示装置 |
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- 2021-05-20 CN CN202121089572.3U patent/CN215007272U/zh active Active
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2022
- 2022-04-25 US US17/727,821 patent/US11681087B2/en active Active
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US20220373162A1 (en) | 2022-11-24 |
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