CN1266778C - 一种封装材料及以其封装而成的混光式发光二极管器件 - Google Patents
一种封装材料及以其封装而成的混光式发光二极管器件 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48257—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a die pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/49105—Connecting at different heights
- H01L2224/49107—Connecting at different heights on the semiconductor or solid-state body
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Abstract
本发明公开了一种封装材料及以其封装而成的混光式发光二极管器件。根据本发明一优选实施例的一种封装材料,包含:一种基础材料;以及许多萤光剂纳米颗粒,散布于该基础材料中。根据本发明一优选实施例的一混光式发光二极管器件,包含:一蓝色发光二极管;以及一封装材料,此封装材料包括一种基础材料,以及散布于此基础材料中的许多萤光剂纳米颗粒,该蓝色发光二极管被封装于此封装材料中。
Description
技术领域
本发明是涉及用以封装半导体芯片(chip)的一种封装材料,尤其涉及以该封装材料封装一发光二极管芯片而成的一混光式发光二极管器件。
背景技术
发光二极管的应用颇为广泛,例如,可应用于光学显示装置、交通标志、资料储存装置、通讯装置、照明装置、以及医疗装置。发光二极管中潜在需求量最大且最重要的,是白色发光二极管,如果能够降低白色发光二极管的生产成本,并延长其使用寿命,则有可能取代目前大量使用的白色萤光灯管或灯泡。
目前市场上有一种白色发光二极管灯泡,是利用混有萤光剂颗粒的封装材料,封装蓝色发光二极管而成,其原理是利用蓝色发光二极管所发射的蓝光激发萤光剂颗粒,使后者产生黄光,并混合原来的蓝光而成为白光。
这种现有技术的白色发光二极管灯泡的一个缺点在于:其封装材料中所混合的萤光剂颗粒的尺寸为微米级(Micronorder),例如数微米至数百微米,这种大小等级的萤光剂颗粒在封装材料中有难以避免的沉淀现象,造成白色发光二极管灯泡发光不均匀,甚至产生遮蔽发光二极管芯片所发射光线,而导致白色发光二极管灯泡发光效率降低的不良结果。
该现有技术的白色发光二极管灯泡的另一个缺点在于:其萤光剂颗粒不透明,因此仅是表面材料有接受蓝光激发而产生黄光的效用,其内部的材料只有遮蔽光线的不良作用,因此萤光剂材料的有效利用率偏低,且遮蔽光线的不良作用却偏高。
发明内容
本发明的一个任务在于提供一种含可受激发光的纳米材料单元的封装材料及以其封装而成的白色发光二极管器件,其中每一可受激发光的纳米材料单元的最小线性尺寸小于400纳米且在封装材料中无沉淀现象,因此能够避免前述现有技术中白色发光二极管灯泡发光不均匀与发光效率不良等缺点。
本发明的另一个任务在于提供一种含萤光剂纳米材料单元的封装材料及以其封装而成的白色发光二极管器件,其中每一可受激发光的纳米材料单元的最小线性尺寸小于400纳米,因此较之现有技术的白色发光二极管灯泡,能够提高萤光剂材料的有效利用率,且降低其遮蔽光线的不良作用。
为实现以上各任务,根据本发明一优选实施例的一种封装材料,包含一种液态基础材料;以及许多萤光剂纳米颗粒,散布于该液态基础材料中。根据本发明一优选实施例的一发光二极管器件,包含一蓝色发光二极管;以及一封装材料,包含一种液态基础材料及散布于此液态基础材料中的许多萤光剂纳米颗粒,该蓝色发光二极管被封装于此封装材料中。
附图说明
图1以示意方式显示出根据本发明一优选实施例的白色发光二极管器件。
附图标记说明
11 第一导电元件
11a 突出部
12 第二导电元件
13 导线
14 封装材料
20 蓝色发光二极管芯片
21 基板
28 p型电极
29 n型电极
具体实施方式
首先需要说明,本发明的原理为:在一种例如包含环氧树脂的基础材料中,混入受蓝光激发时产生黄光的许多可受激发光的纳米材料单元,以所获得的封装材料封装蓝色发光二极管,使其所产生的蓝光与这些可受激发光的纳米材料单元受激发所产生的黄光混合,而产生白光。
根据本发明一优选实施例的封装材料,其中包含许多可受激发光的纳米材料单元,例如萤光剂纳米颗粒,这些萤光剂纳米颗粒的几何形状大致上为圆球形,且其直径例如介于5至30纳米之间。将这些萤光剂纳米颗粒混入一种液态环氧树脂基础材料(此液态基础材料制成后,呈现固态亦可)中,获得一种以大致上均匀散布的方式充填了许多萤光剂纳米颗粒的环氧树脂混合物封装材料,混合时适当选择萤光剂纳米颗粒的用量与颗粒尺寸,使所制成之封装材料在封装蓝色发光二极管时,其所发射的蓝光,及萤光剂纳米颗粒受激发所产生的黄光,能够混光得到所期望的白光。
前述根据本发明一优选实施例的封装材料,可用通过封装一蓝色发光二极管于其中,而得到根据本发明一优选实施例的一白色发光二极管器件,如图1中所示,包含一蓝色发光二极管20,此发光二极管20包含形成于一基扳21上方的一个氮化镓系叠层构造、一p型电极28、一n型电极29、以及根据本发明充填有萤光剂纳米颗粒的封装材料14,p型电极28经由一导线13连接于一第一导电元件11的一突出部11a上,n型电极29经由一导线13连接于一第二导电元件12。
由于根据本发明一优选实施例的封装材料中的萤光剂纳米颗粒的尺寸例如仅介于5至30纳米之间,在封装材料中无沉淀现象,且对于相同重量的萤光材料而言,根据本发明的封装材料中的萤光剂纳米颗粒,较之现有技术,其表面萤光材料受激发光作用的利用率提高,因此只需质量较少的萤光剂颗粒,即可达到一定的受激发黄光的效果,显然也能够降低遮蔽光线的不良作用,从而能够提升白色发光二极管器件的整体发光效率。
以上所述,仅为用以方便说明根据本发明一优选实施例的一种封装材料与根据本发明一优选实施例的一种白色发光二极管器件,本发明的范围不限于该优选实施例,凡根据本发明所做的任何变更,皆属本发明权利要求的范围。例如,通过控制封装材料中萤光剂纳米颗粒之尺寸与用量,使所封装材而成的发光二极体器件,发射近似白光的光,也显然不脱离本发明之精神与范围。再者,本领域技术人员应可容易了解本发明的原理也可用于制造固态封装材料,以及以其它可受激发光的纳米材料单元取代本发明一优选实施例的萤光剂纳米颗粒,也都不脱离本发明的精神与范围。
Claims (12)
1,一种封装材料,包含:
一种基础材料;以及许多可受激发光的纳米材料单元,散布于该基础材料中,且其中每一可受激发光的纳米材料单元的最小线性尺寸小于400纳米。
2.根据权利要求1的一种封装材料,其中该可受激发光的纳米材料单元包含受蓝光激发时产生黄光的萤光材料。
3.根据权利要求1的一种封装材料,其中该可受激发光的纳米材料单元为圆球形,且其直径小于400纳米。
4.根据权利要求1的一种封装材料,其中该可受激发光的纳米材料单元为圆球形,且其直径介于5至30纳米之间。
5.根据权利要求1的一种封装材料,其中该基础材料包含环氧树脂。
6.根据权利要求1的一种封装材料,其中该基础材料包含液态环氧树脂。
7.一发光二极管器件,包含:
一第一色光发光二极管;以及
一封装材料,包含一种基础材料及散布于此基础材料中的许多可受激发光的纳米材料单元,其中每一可受激发光的纳米材料单元的最小线性尺寸小于400纳米,且该第一色光发光二极管被封装于此封装材料之内,使得在该第一色光发光二极管所发射的第一色光照射可受激发光的纳米材料单元时,可使其发射第二色光,其中该第一色光的波长较该第二色光的波长短。
8.根据权利要求7的一种封装材料,其中该可受激发光的纳米材料单元包含受该第一色光激发时产生该第二色光的纳米萤光材料。
9.根据权利要求7的一发光二极管器件,其中该可受激发光的纳米材料单元为圆球形,且其直径小于400纳米。
10,根据权利要求7的一发光二极管器件,其中该可受激发光的纳米材料单元为圆球形,且其直径介于5至30纳米之间。
11.根据权利要求7的一发光二极管器件,其中该基础材料包含液态环氧树脂。
12.根据权利要求7的一发光二极管器件,其中该第一色光为蓝光,该该第二色光为黄光。
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CN101661983B (zh) * | 2008-08-26 | 2012-03-14 | 富准精密工业(深圳)有限公司 | 发光二极管及其制备方法 |
CN102694110B (zh) * | 2012-06-08 | 2015-06-03 | 北京理工大学 | 一种含非稀土纳米晶荧光粉的封装材料、制备方法和应用 |
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