CN201134429Y - 一种led点阵模块 - Google Patents

一种led点阵模块 Download PDF

Info

Publication number
CN201134429Y
CN201134429Y CN 200720082740 CN200720082740U CN201134429Y CN 201134429 Y CN201134429 Y CN 201134429Y CN 200720082740 CN200720082740 CN 200720082740 CN 200720082740 U CN200720082740 U CN 200720082740U CN 201134429 Y CN201134429 Y CN 201134429Y
Authority
CN
China
Prior art keywords
circuit board
printed circuit
led
lattice module
pcb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200720082740
Other languages
English (en)
Inventor
许伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU LVZHOU ELECTRONICS Co Ltd
Original Assignee
CHENGDU LVZHOU ELECTRONICS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHENGDU LVZHOU ELECTRONICS Co Ltd filed Critical CHENGDU LVZHOU ELECTRONICS Co Ltd
Priority to CN 200720082740 priority Critical patent/CN201134429Y/zh
Application granted granted Critical
Publication of CN201134429Y publication Critical patent/CN201134429Y/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45117Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 400°C and less than 950°C
    • H01L2224/45124Aluminium (Al) as principal constituent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting 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
    • H01L2224/48221Connecting 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
    • H01L2224/48225Connecting 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 non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227Connecting 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 non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item

Landscapes

  • Led Device Packages (AREA)

Abstract

本实用新型涉及一种LED点阵模块,具体的说涉及一种LED点阵模块的封装结构。本实用新型采用的技术方案是:一种LED点阵模块,包括塑料反射罩、印刷电路板、环氧树脂密封层以及固定于印刷电路板上的连接针脚、LED芯片和连接导线,印刷电路板和塑料反射罩之间形成一系列呈矩阵排列的凹坑,LED芯片和连接导线位于凹坑内,所述环氧树脂密封层位于凹坑的顶部,并与塑料反射罩、印刷电路板形成一系列呈矩阵排列的密闭空间,所述密闭空间的高度大于连接导线的高度。本实用新型的可以有效的延长LED点阵模块的使用寿命。

Description

一种LED点阵模块
技术领域
本实用新型涉及一种LED点阵模块,具体的说涉及一种LED点阵模块的封装结构。
背景技术
LED(发光二级管)点阵模块是由多个LED矩阵单元组成,多个LED点阵模块又可以组成大屏幕显示器,主要用于室外显示。现有的LED点阵模块的封装结构如图1所示,包括塑料反射罩1、印刷电路板2、环氧树脂密封层3以及固定于印刷电路板2上的连接针脚21、LED芯片22和连接导线23(材料为硅铝线或者金线),环氧树脂密封层3分为上层密封层31和下层密封层32,上层密封层31完全灌封于印刷电路板2和塑料反射罩1之间形成的凹坑4。现有封装结构的LED点阵模块主要存在以下缺点:(1)LED在发光过程中要产生大量的热量,特别是三基色LED点阵模块热量更大,环氧树脂密封层1完全灌封印刷电路板2和塑料反射罩1之间的凹坑后,由于环氧树脂的散热性能不好,使得热量不能及时散发出去,因此造成LED的光衰减增加,电流随着温度的升高而增大,使LED的使用寿命缩短。(2)由于LED点阵模块采用的是环氧树脂完全灌封,受温度的影响,环氧树脂的热胀冷缩系数不同于LED芯片连接导线,很容易造成连接线断裂导致LED点阵模块出现死点(不发光点)。(3)由于LED点阵模块采用环氧树脂完全灌封,当LED点阵模块中有部分LED芯片发光亮度不同(发光亮度不同造成显示屏产生马赛克现象)及LED点阵模块死点时,LED点阵模块只能报废不能返修,从而造成材料资源严重浪费。
实用新型内容
为了克服现有的LED点阵模块的封装结构的缺点,本实用新型提供了一种新的LED点阵模块的封装结构,可以有效的延长LED点阵模块的使用寿命。
本实用新型采用的技术方案是:一种LED点阵模块,包括塑料反射罩、印刷电路板、环氧树脂密封层以及固定于印刷电路板上的连接针脚、LED芯片和连接导线,印刷电路板和塑料反射罩之间形成一系列呈矩阵排列的凹坑,LED芯片和连接导线位于凹坑内,所述环氧树脂密封层位于凹坑的顶部,并与塑料反射罩、印刷电路板形成一系列呈矩阵排列的密闭空间,所述密闭空间的高度大于连接导线的高度。
为了便于LED点阵模块的返修,在印刷电路板的下部使用便于拆卸的透明三防漆密封层对印刷电路板进行密封。
本实用新型的有益效果:(1)由于LED芯片和连接导线位于密闭空间内,LED芯片和连接导线不与环氧树脂密封层相接触,LED在发光过程中产生的热量,可以通过空气和印刷线路板将大部分热量散发,从而减小LED的光衰,延长使用寿命。(2)环氧树脂同LED芯片连接导线(硅铝线或者金线)之间没有结合,就不会因为热胀冷缩系数不同而造成LED芯片连接导线(硅铝线或者金线)断裂,有效减少LED点阵模块死点(不发光点),从而进一步提高LED的寿命。(3)由于在印刷电路板的下部使用便于拆卸的透明三防漆密封层代替环氧树脂密封层,使得LED点阵模块出现故障后,可以方便的拆卸维修,节约了材料成本。
附图说明
图1是现有技术的LED点阵模块的剖视结构图;
图2是本实用新型的LED点阵模块的剖视结构图;
图3是本实用新型的LED点阵模块的俯视结构图;
附图标记说明:塑料反射罩1、印刷电路板2、连接针脚21、LED芯片22、连接导线23、环氧树脂密封层3、上层密封层31、下层密封层32,凹坑4、密闭空间5、透明三防漆密封层6。
具体实施方式
下面结合附图和实施例对本实用新型进一步说明:
实施例1:如图2和图3所示,一种LED点阵模块,包括反射罩1、印刷电路板2、环氧树脂密封层3以及固定于印刷电路板2上的连接针脚21、LED芯片22和连接导线23,印刷电路板2和塑料反射罩1之间形成一系列呈矩阵排列的凹坑4,LED芯片和连接导线位于凹坑4内,其所述环氧树脂密封层3位于凹坑4的顶部,并与塑料反射罩1、印刷电路板2形成一系列呈矩阵排列的密闭空间5,所述密闭空间的高度大于连接导线的高度。
实施例2:为了便于LED点阵模块的返修,在实施例1的基础上,在印刷电路板的下部使用透明三防漆密封层6对印刷电路板2进行密封,形成下层密封层,由于透明三防漆密封层6达到同样的密封效果所需涂层比环氧树脂薄很多,因而在返修时拆卸方便。
实施例3:在实施例1的基础上,在印刷电路板的下部使用环氧树脂对印刷电路板2进行密封,由于环氧树脂的涂层材料较厚,因而在返修时拆卸不太方便。
本实用新型的实施例2的LED点阵模块的生产方式如下:在LED点阵模块成型前,先在塑料反射腔内灌封1mm-2mm厚的环氧树脂,并烘干成型,然后再将已用超声波焊接好的LED发光芯片的印刷线路板经透明三防漆喷涂处理,形成下层密封层,最后将处理好的印刷线路板放入塑料反射罩内组合固定成型。
本领域的普通技术人员将会意识到,这里所述的实施例是为了帮助读者理解本发明的原理,应被理解为本实用新型的保护范围并不局限于这样的特别陈述和实施例。

Claims (3)

1.一种LED点阵模块,包括塑料反射罩、印刷电路板、环氧树脂密封层以及固定于印刷电路板上的连接针脚、LED芯片和连接导线,印刷电路板和塑料反射罩之间形成一系列呈矩阵排列的凹坑,LED芯片和连接导线位于凹坑内,其特征在于,所述环氧树脂密封层位于凹坑的顶部,并与塑料反射罩、印刷电路板形成一系列呈矩阵排列的密闭空间,所述密闭空间的高度大于连接导线的高度。
2.根据权利要求1所述的LED点阵模块,其特征在于,所述印刷电路板的下部还具有透明三防漆密封层。
3.根据权利要求1所述的LED点阵模块,其特征在于,所述印刷电路板的下部还具有环氧树脂密封层。
CN 200720082740 2007-12-27 2007-12-27 一种led点阵模块 Expired - Fee Related CN201134429Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200720082740 CN201134429Y (zh) 2007-12-27 2007-12-27 一种led点阵模块

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200720082740 CN201134429Y (zh) 2007-12-27 2007-12-27 一种led点阵模块

Publications (1)

Publication Number Publication Date
CN201134429Y true CN201134429Y (zh) 2008-10-15

Family

ID=40062697

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200720082740 Expired - Fee Related CN201134429Y (zh) 2007-12-27 2007-12-27 一种led点阵模块

Country Status (1)

Country Link
CN (1) CN201134429Y (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882420A (zh) * 2010-06-07 2010-11-10 杭州士兰微电子股份有限公司 Led显示系统
WO2012149698A1 (zh) * 2011-05-03 2012-11-08 深圳市华星光电技术有限公司 Led封装结构及液晶显示器
CN106179888A (zh) * 2016-08-31 2016-12-07 浙江朗科智能电气有限公司 一种喷漆处理的pcba板

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882420A (zh) * 2010-06-07 2010-11-10 杭州士兰微电子股份有限公司 Led显示系统
CN101882420B (zh) * 2010-06-07 2012-01-11 杭州士兰微电子股份有限公司 Led显示系统
WO2012149698A1 (zh) * 2011-05-03 2012-11-08 深圳市华星光电技术有限公司 Led封装结构及液晶显示器
CN106179888A (zh) * 2016-08-31 2016-12-07 浙江朗科智能电气有限公司 一种喷漆处理的pcba板

Similar Documents

Publication Publication Date Title
CN101454910B (zh) 含三维支架用于物理空间照明的半导体光源
CN102956627B (zh) Led封装结构
CN102339927A (zh) 发光二极管
CN202013883U (zh) 大功率led模块封装结构
CN201134429Y (zh) 一种led点阵模块
CN201994018U (zh) 一种led显示屏罩
CN201893338U (zh) Led封装结构及led发光显示模组
CN201081165Y (zh) 一种led日光灯管
CN2606943Y (zh) 发光二极管点阵显示模块
CN201354966Y (zh) 玻璃封装的发光二极管
CN201893373U (zh) Led封装结构及led发光显示模组
CN202056656U (zh) 一种高散热led路灯
CN202056682U (zh) 一种提高光效的led模组
CN104393160A (zh) 一种六引脚5050led灯的焊盘
CN202469577U (zh) 双面出光薄片式led灯
CN102005446A (zh) Led封装结构及led发光显示模组
CN202712177U (zh) 一种双面出光平面薄片式led封装结构
CN102506336A (zh) 双面出光薄片式led灯
CN202917484U (zh) 具有远程荧光粉膜的cob结构
CN202109330U (zh) 一种smd led射灯
CN201844276U (zh) 一种led背光模组、显示器及电视机
CN205177836U (zh) 一种高稳定高压陶瓷cob led
CN212570993U (zh) 一种可用于显示的发光二极管一体化模组器件
CN101315736B (zh) 一种用于户外显示的发光二极管点阵模块及其制作方法
CN201975422U (zh) 发光二极管封装结构

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20081015

Termination date: 20100127