CN105895792B - 发光组件 - Google Patents
发光组件 Download PDFInfo
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- CN105895792B CN105895792B CN201610089089.2A CN201610089089A CN105895792B CN 105895792 B CN105895792 B CN 105895792B CN 201610089089 A CN201610089089 A CN 201610089089A CN 105895792 B CN105895792 B CN 105895792B
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Abstract
本发明提供一种发光组件,包含一发光单元、一电极单元,及一绝缘单元。该发光单元包括一发光体与一封装胶体,该发光体以电致发光产生光能,且该封装胶体形成于该发光体的部分表面。该电极单元包括分别形成于该发光体未形成有该封装胶体的表面的一第一电极与一第二电极。该绝缘单元形成于该发光单元的表面,且包括一凸出于该第一电极与该第二电极之间的第一绝缘层。本发明提供的发光组件,可于后续利用锡膏电性连接于一外部电路板时,藉由该绝缘单元的设置而有效地解决因锡膏溢流而相互接触所造成组件短路的问题。
Description
技术领域
本发明涉及一种发光组件,尤其涉及一种具有高制程良率及组件信赖性的发光组件。
背景技术
发光二极管(light emitting diode,LED)由于具有体积小、亮度高、反应时间短、寿命长等优点,因此,由发光二极管进行组装所构成的发光组件,广泛地被应用于照明、广告牌,或作为显示器的背光源等领域。
现有的发光组件制程中,主要是先将发光二极管进行封装后,再利用表面黏着技术(surface mount technology,SMT)将发光二极管焊接于印刷电路板(printed circuitboard,PCB)上,形成电性通路,而制成发光组件。
一般而言,常见的表面黏着技术利用锡膏(solder)将发光二极管电性连接于印刷电路板上,然而,目前以此方式进行连接常见的问题为,锡膏于接合或压合的过程中,容易产生锡膏溢流,熔融的锡膏也因为软化流动而相互接触造成组件短路,进而使得发光组件失效。
因此,由上述的说明可知,发展出一种能克服上述缺点的发光组件,使该发光组件能兼顾制程良率、组件信赖性,是此技术领域的相关技术人员所待突破的课题。
发明内容
因此,本发明的一目的,即在提供一种发光组件。
于是,本发明发光组件,包含一发光单元、一电极单元,及一绝缘单元。
该发光单元包括一发光体与一封装胶体,该发光体以电致发光产生光能,且该封装胶体形成于该发光体的部分表面。
该电极单元包括一第一电极与一第二电极,该第一电极与该第二电极分别形成于该发光体未形成有该封装胶体的的表面。
该绝缘单元形成于该发光单元的表面,且包括一凸出于该第一电极与该第二电极之间的第一绝缘层。
本发明的有益效果在于,在将该发光组件利用锡膏电性连接于一外部电路板时,可藉由该绝缘单元有效地分隔锡膏,以解决因锡膏溢流而造成组件短路的问题,兼具提升制程良率、组件信赖性,以及降低生产成本等优势。
附图说明
图1是一剖视图,说明本发明发光组件的一第一实施例;
图2是一以图1为例的俯视图,说明本发明该第一实施例;
图3是一剖视图,说明本发明该第一实施例的其中一态样;
图4是一剖视图,说明本发明该第一实施例的另一态样;
图5是一以图4为例的俯视图,说明本发明该第一实施例的另一态样;
图6是一剖视图,说明本发明该第一实施例的又一态样;
图7是一剖视图,说明本发明发光组件的一第二实施例;
图8是一剖视图,说明本发明该第二实施例的另一态样;
图9是一剖视图,说明本发明该第二实施例的又一态样;
图10是一俯视图,说明本发明发光组件的一第三实施例;
图11是一立体图,说明本发明发光组件的一第四实施例;
图12是一立体图,说明本发明该第四实施例的另一态样;
图13是一立体图,说明本发明发光组件的一第五实施例;
图14是一类似于图11的立体图,说明本发明该第四实施例不包含该透光基板的结构态样;
图15是一类似于图13的立体图,说明本发明该第五实施例不包含该透光基板的结构态样;
图16是一剖视图,说明以本发明该第一实施例电性连接于一外部电路板的实施态样;
图17是一剖视图,说明以本发明该第二实施例电性连接于该外部电路板的实施态样。
附图标记:
2:发光单元
21:发光体
211:第一面
212:第二面
213:周面
22:封装胶体
221:第三面
222:第四面
23:透光基板
24:出光面
25:底面
3:电极单元
31:第一电极
311:第一电极区
32:第二电极
321:第二电极区
4:绝缘单元
41:第一绝缘层
42:第二绝缘层
43:第三绝缘层
44:凹槽
5:外部电路板
51:垫片
52:锡膏
具体实施方式
在本发明被详细描述之前,应当注意在以下的说明内容中,类似的组件是以相同的编号来表示。有关本发明之技术内容、特点与功效,在以下的详细说明中,将可清楚的呈现。
参阅图1与图2,本发明发光组件的一第一实施例包含一发光单元2、一电极单元3,及一绝缘单元4。
该发光单元2包括一发光体21、一封装胶体22,及一透光基板23。该发光体21以电致发光产生光能且具有一第一面211、一反向于该第一面211的第二面212,及一连接该第一面211与第二面212的周面213。该封装胶体22形成于该周面213及第一面211,且具有彼此反向的一第三面221及一第四面222,该发光体21是自该第四面222朝向该第三面221设置而被该封装胶体22包覆。该透光基板23对应形成于该第一面211的上方,并与该封装胶体22的第三面221连接。
该电极单元3包括一第一电极31,及一第二电极32,该第一电极31与该第二电极32分别形成于该发光体21的第二面212。
此处要说明的是,该发光单元2具有一出光面24,及一反向于该出光面24的底面25,其中,该发光体21的第二面212与该封装胶体22的第四面222即为该底面25。该发光体21具有一N型半导体(图未示)与一P型半导体(图未示),且该第一电极31与该第二电极32分别电性连接该N型半导体与该P型半导体。详细地说,该发光体21具有一N型半导体层、一形成于该N型半导体层上的发光层,及一形成于该发光层上的P型半导体层,其中,该第一电极31与该第二电极32则分别形成于该N型半导体层与该P型半导体层的表面。
该第一实施例中,由于该发光单元2与该电极单元3的细部结构及材料选用为本技术领域者所熟知,且非为本发明的主要技术特征,因此不再多加赘述。
该绝缘单元4形成于该底面25,且包括一凸出该第一电极31与该第二电极32之间的第一绝缘层41。其中,该第一绝缘层41的材料选自绝缘材料,且可利用网印、UV固化、曝光显影制程,或3D打印等方式形成于该第一电极31与该第二电极32之间。本发明该第一实施例设置该绝缘单元4的目的是于焊接的过程中,用以隔绝该第一电极31与该第二电极32上的锡膏,因此,该绝缘单元4所选用的绝缘材料是可耐制程高温的材料。因此,该第一绝缘层41的材料包括但不限于环氧树脂(epoxy resin)、光阻(photoresist)、塑料、二氧化硅(silicon dioxide,SiO2)、硅树脂(silicone),或前述其中任意组合。该些材料皆具有优良的抗化性、耐热性与机械性质。
于此还要说明的是,该第一绝缘层41于制作时,可如图1所示,凸出于该第一电极31与该第二电极32之间,由于该第一绝缘层41所选用的材料本身即有防沾锡的功效,因此,该第一绝缘层41也可如图3所示,与该第一电极31及第二电极32齐平,亦可达到相同的功效且具有节省成本的优点。
此外,还要说明的是,该第一绝缘层41除了可如图1与图2所示,形成于该第一电极31与该第二电极32之间且不与该第一电极31及第二电极32接触,亦可如图4与图5所示,该第一绝缘层41可与该第一电极31及第二电极32接触;亦或如图6所示,该第一绝缘层41覆盖部分的该第一电极31及第二电极32,其可依制程条件或成本考虑等情况适时地进行调整,于此并无限制。
参阅图7至图9,本发明发光组件的一第二实施例与该第一实施例大致相同,其不同之处在于,该第二实施例不包含该透光基板23,进而可达到薄型化的设计趋势,亦更加符合市场的需求。
参阅图10,本发明发光组件的一第三实施例与该第一实施例大致相同,其不同之处在于,该绝缘单元4还包括至少一第二绝缘层42,该第二绝缘层42形成于该第一电极31与第二电极32的表面,并将该第一电极31与第二电极32分别区隔成至少二个第一电极区311与至少二个第二电极区321。图10是以该绝缘单元4还包括一第二绝缘层42为例来做说明,但不限于此。此外,由于该第二绝缘层42的材料选择及形成方式与该第一绝缘层41相同,于此不再多加说明。
此处要说明的是,该第一绝缘层41与第二绝缘层42的边缘可与该发光体21的边缘切齐(如图2所示),亦或可延伸至该封装胶体22的周缘,其可依制程条件或成本考虑等情况适时的进行调整,于此并无限制。图10是以该第一绝缘层41与第二绝缘层42分别延伸至该封装胶体22的周缘为例来做说明,但不限于此。
此外,还要说明的是,本发明该第三实施例藉由该第二绝缘层42进一步将被该第一绝缘层41隔离的该第一电极31与第二电极32分别区隔成二个第一电极区311与二个第二电极区321,因此,可于后续电性连接于一外部电路板时,利用该等第一电极区311与第二电极区321达到对位的功能,进而使该发光组件可更精准的连接于该外部电路板上。
参阅图11,本发明发光组件的一第四实施例与该第一实施例大致相同,其不同之处在于,该绝缘单元4还包括一第三绝缘层43,该第三绝缘层43形成于该封装胶体22的第四面222,且与该第一绝缘层41相连接。具体地说,该第一绝缘层41与第三绝缘层43会凸出于该发光单元2与该电极单元3,并与该发光单元2和该电极单元3共同界定出二个凹槽44。
本发明该第四实施例则藉由该等凹槽44,于后续利用锡膏电性连接于一外部电路板时,除了可提供对位的功能外,还能将锡膏限制于该等凹槽44中,以防止锡膏溢流,亦可避免组件产生短路或漏电的情况。
于此要说明的是,该第一绝缘层41与第三绝缘层43除了可凸出于该发光单元2与该电极单元3,同样地,如图12所示,也可如前述该第一实施例所述,与该电极单元3齐平。
参阅图13,本发明发光组件的一第五实施例与该第四实施例大致相同,其不同之处在于,该绝缘单元4还包括该第二绝缘层42,也就是说,该第三绝缘层43会与该第一绝缘层41与该第二绝缘层42相连接,且同该第四实施例所述,该第一绝缘层41、第二绝缘层42与第三绝缘层43会与该发光单元2和该电极单元3共同界定出四个凹槽44。
此外,还需说明的是,配合参阅图14与图15,本发明该第四实施例及第五实施例与该第二实施例相同也可不包含该透光基板23,以达到薄型化的设计趋势。
参阅图16与图17,图16与图17是说明分别以本发明该第一实施例与第二实施例为例,将其电性连接于一外部电路板5上。于是,在将本发明该第一实施例与第二实施例接合于一外部电路板5的过程中,需先在该外部电路板5上配置多个垫片51,再于该些垫片51上印刷锡膏52,再将本发明该第一实施例与第二实施例的发光组件电性连接于该外部电路板5上。
本发明该第一实施例至第五实施例所呈现不同态样的发光组件,主要都是藉由该绝缘单元4而将该第一电极31与第二电极32隔离,以防止焊锡时锡膏溢流所造成组件短路的问题。因此,可有效地提升制程良率与组件信赖性,进而可因产品良率的提升而达到降低生产成本的优点。另一方面,本发明该发光组件还能藉由该第一绝缘层41与第二绝缘层42的设置,弹性地调整该第一电极区311与第二电极区321的数量,以配合产品的种类或后续对位组装制程的需求。
综上所述,本发明发光组件藉由该绝缘单元4的设置,可于后续电性连接于该外部电路板5时,防止因锡膏52溢流而相互接触所造成组件短路的问题,兼顾高制程良率、组件信赖性,以及低成本等优势。因此,确实能达到本发明的目的。
以上所述,仅为本发明的实施例而已,不能以此限定本发明实施的范围,凡是依本发明权利要求及专利说明书内容所作的简单的等效变化与修饰,皆仍属本发明专利涵盖的范围内。
Claims (7)
1.一种发光组件,其特征在于,包含:
一发光单元,包括一发光体与一封装胶体,所述发光体以电致发光产生光能,所述发光体具有一上表面、一下表面,及一连接所述上表面与所述下表面的一周面,且所述封装胶体包覆所述发光体的所述周面及所述上表面,并暴露出所述下表面;
一电极单元,包括一第一电极与一第二电极,所述第一电极、所述第二电极分别形成于所述发光体未形成有所述封装胶体的所述下表面上;及
一绝缘单元,形成于所述发光体的所述下表面上,所述绝缘单元包括位于所述第一电极与所述第二电极之间的一第一绝缘层,所述第一绝缘层的一下表面凸出于所述第一电极的一下表面及所述第二电极的一下表面。
2.根据权利要求1所述的发光组件,其特征在于,所述绝缘单元还包括一第二绝缘层,且所述第二绝缘层与所述第一绝缘层连接,并将所述第一电极与所述第二电极分别区隔成二个第一电极区与二个第二电极区。
3.根据权利要求2所述的发光组件,其特征在于,所述绝缘单元还包括一第三绝缘层,所述第三绝缘层连接并环绕所述第一绝缘层及所述第二绝缘层,所述绝缘单元暴露出所述第一电极的所述第一电极区与所述第二电极的所述第二电极区。
4.根据权利要求1所述的发光组件,其特征在于,所述绝缘单元还包括一第三绝缘层,所述第三绝缘层连接并环绕所述第一绝缘层,所述绝缘单元暴露出所述第一电极与所述第二电极。
5.根据权利要求1所述的发光组件,其特征在于,所述发光单元还包括一透光基板,所述透光基板对应形成于所述发光体的所述上表面的上方,并与所述封装胶体的上表面连接。
6.根据权利要求1所述的发光组件,其特征在于,所述发光体具有一发光层、一N型半导体及一P型半导体,所述发光层位于所述N型半导体及所述P型半导体之间,所述第一电极与所述第二电极分别电性连接于所述N型半导体及所述P型半导体。
7.根据权利要求1所述的发光组件,其特征在于,所述绝缘单元的材料包括环氧树脂、光阻、塑料、二氧化硅、硅树脂,或前述其中任意组合。
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