CN111403344A - 一种改善cob led显示屏色块的方法 - Google Patents

一种改善cob led显示屏色块的方法 Download PDF

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CN111403344A
CN111403344A CN202010244387.0A CN202010244387A CN111403344A CN 111403344 A CN111403344 A CN 111403344A CN 202010244387 A CN202010244387 A CN 202010244387A CN 111403344 A CN111403344 A CN 111403344A
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cob
chips
display screen
dimensional coordinate
substrate
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龚文
杜典文
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Suzhou Kinglight Optoelectronics Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/50Multistep manufacturing processes of assemblies consisting of devices, each device being of a type provided for in group H01L27/00 or H01L29/00
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03Assemblies 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
    • H01L25/04Assemblies 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
    • H01L25/075Assemblies 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
    • H01L25/0753Assemblies 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • H01L27/153Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier 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
    • H01L33/62Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008Processes
    • H01L2933/0033Processes relating to semiconductor body packages
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008Processes
    • H01L2933/0033Processes relating to semiconductor body packages
    • H01L2933/0066Processes relating to semiconductor body packages relating to arrangements for conducting electric current to or from the semiconductor body

Abstract

本发明涉及COB LED封装领域,特别是涉及一种改善COB LED显示屏色块的方法,包括COB基板、一组承载LED芯片的蓝膜、随机分布的二维坐标文件、能读取二维坐标文件的固晶机;COB基板正面有呈阵列排布的焊盘,用于安装LED芯片,该阵列为m行n列,其中m、n为非零自然数;固晶机先读取随机分布的二维坐标文件,然后捉取蓝膜上的LED芯片,之后固晶机按照二维坐标文件上的二维坐标对应的在COB基板上的焊盘固定LED芯片。本发明通过在固晶阶段,同时使用多张芯片蓝膜,利用随机固晶的方式,来取代普通LED的分光制程,提高COB LED的发光一致性,达到消除色块问题的目的。

Description

一种改善COB LED显示屏色块的方法
技术领域
本发明涉及COB LED封装领域,特别是涉及一种改善COB LED显示屏色块的方法。
背景技术
COB LED显示屏的出现,极大的提高了LED显示屏的分辨率及可靠性。然而由于其封装的特殊性,多颗LED封装于一块COB LED模组上,无法进行类似于普通LED的分光制程对每颗LED进行分光,其发光一致性成为制造过程中一大难题。发光源LED芯片虽然进行过筛选,但是每一张芯片蓝膜上不同区域或不同蓝膜间,芯片的波长及亮度具有一定的差异,在传统的固晶方式下,容易造成COB LED显示屏上的色块问题。
发明内容
有鉴于此,本发明提供了一种解决COB LED显示屏色块问题的方法,通过在固晶阶段,同时使用多张芯片蓝膜,利用随机固晶的方式,来取代普通LED的分光制程,提高COBLED的发光一致性,达到消除色块问题的目的。
本发明的技术方案如下:
一种改善COB LED显示屏色块的方法,包括COB基板、一组承载LED芯片的蓝膜、随机分布的二维坐标文件、能读取二维坐标文件的固晶机;
COB基板正面有呈阵列排布的焊盘,用于安装LED芯片,该阵列为m行n列,其中m、n为非零自然数;
固晶机先读取随机分布的二维坐标文件,然后捉取蓝膜上的LED芯片,之后固晶机按照二维坐标文件上的二维坐标对应的在COB基板上的焊盘固定LED芯片。
进一步,随机分布的二维坐标文件为一种包含i组随机二维坐标F=(x,y)的数据文件,其中i、x、y为非零自然数且i=m*n,x≤m,y≤n。
进一步,COB基板为承载LED芯片与驱动电子元器件的PCB基板。
进一步,承载有LED芯片的蓝膜是承载若干个LED芯片的LED物料。
进一步,蓝膜总共三层:底层是PVC或者PET材料,中间是丙烯酸类胶体,顶层是聚乙烯。
进一步,固晶机为具有识别二维坐标文件的LED固晶机,其能按照二维坐标文件上的二维坐标对应的在COB基板上用固晶胶固定LED芯片。
进一步,蓝膜上的LED芯片是发光颜色为红色或绿色或蓝色的LED芯片。
进一步,LED芯片按照二维坐标文件的二维坐标在COB基板的阵列焊盘上进行随机分布,形成若干个由红绿蓝三色LED芯片组成的基本像素点,若干个基本像素点形成封装于COB显示屏内部的显示阵列,显示阵列为m行n列。
进一步,LED芯片的电极通过键合线与COB基板的焊盘连接导通。
进一步,COB基板包括铝基板、铜基板、陶瓷板或BT板中的一种。
本发明的有益效果为:
本发明通过同时使用多张蓝膜,按照随机固晶的方式,将LED芯片封装于COB基板上,来消除同一张蓝膜内及不同蓝膜间的LED芯片差异造成的COB LED显示色块问题。
附图说明
图1为本发明中具体实施方法的示意图;
图中:1-COB基板、2-蓝膜。
具体实施方式
附图仅用于示例性说明,不能理解为对本专利的限制;为了更好说明本实施例,附图某些部件会有省略、放大或缩小,并不代表实际产品的尺寸;对于本领域技术人员来说,附图中某些公知结构及其说明可能省略是可以理解的。附图中描述位置关系仅用于示例性说明,不能理解为对本专利的限制。
实施例1:
如图1所示,一种改善COB LED显示屏色块的方法,包括COB基板1、一组承载LED芯片的蓝膜2、随机分布的二维坐标文件、能读取二维坐标文件的固晶机;
COB基板1正面有呈阵列排布的焊盘,用于安装LED芯片,该阵列为m行n列,其中m、n为非零自然数;
固晶机先读取随机分布的二维坐标文件,然后捉取蓝膜2上的LED芯片,之后固晶机按照二维坐标文件上的二维坐标对应的在COB基板1上的焊盘用固晶胶固定LED芯片。
其中随机分布的二维坐标文件为一种包含i组随机二维坐标F=(x,y)的数据文件,其中i、x、y为非零自然数且i=m*n,x≤m,y≤n。
在本实施例中,COB基板1为承载LED芯片与驱动电子元器件的PCB基板,COB基板1包括铝基板、铜基板、陶瓷板或BT板中的一种。
在本实施例中,LED芯片的电极通过键合线与COB基板1的焊盘连接导通。
在本实施例中,蓝膜2上的LED芯片是发光颜色为红色或绿色或蓝色的LED芯片,蓝膜2是承载若干个LED芯片的LED物料,蓝膜2总共三层:底层是PVC或者PET材料,中间是丙烯酸类胶体,顶层是聚乙烯。
在本实施例中,LED芯片按照二维坐标文件的二维坐标在COB基板1的阵列焊盘上进行随机分布,形成若干个由红绿蓝三色LED芯片组成的基本像素点,若干个基本像素点形成封装于COB显示屏内部的显示阵列,显示阵列为m行n列。
在本实施例中,固晶机为具有识别二维坐标文件的LED固晶机,其能按照二维坐标文件上的二维坐标对应的在COB基板上用固晶胶固定LED芯片。
本发明通过使用一组承载LED芯片的蓝膜2,将蓝膜2上的LED芯片,使用能读取二维坐标文件的固晶机,按照随机分布的二维坐标,固晶于COB基板1上,以消除LED芯片蓝膜内与不同蓝膜间的芯片差异对发光一致性的影响,从而达到消除COB LED显示色块的问题。
显然,本发明的上述实施例仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。

Claims (10)

1.一种改善COB LED显示屏色块的方法,其特征在于,包括COB基板、一组承载LED芯片的蓝膜、随机分布的二维坐标文件、能读取二维坐标文件的固晶机;
COB基板正面有呈阵列排布的焊盘,用于安装LED芯片,该阵列为m行n列,其中m、n为非零自然数;
固晶机先读取随机分布的二维坐标文件,然后捉取蓝膜上的LED芯片,之后固晶机按照二维坐标文件上的二维坐标对应的在COB基板上的焊盘固定LED芯片。
2.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,随机分布的二维坐标文件为一种包含i组随机二维坐标F=(x,y)的数据文件,其中i、x、y为非零自然数且i=m*n,x≤m,y≤n。
3.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,COB基板为承载LED芯片与驱动电子元器件的PCB基板。
4.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,承载有LED芯片的蓝膜是承载若干个LED芯片的LED物料。
5.根据权利要求4所述的一种改善COB LED显示屏色块的方法,其特征在于,蓝膜总共三层:底层是PVC或者PET材料,中间是丙烯酸类胶体,顶层是聚乙烯。
6.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,固晶机为具有识别二维坐标文件的LED固晶机,其能按照二维坐标文件上的二维坐标对应的在COB基板上用固晶胶固定LED芯片。
7.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,蓝膜上的LED芯片是发光颜色为红色或绿色或蓝色的LED芯片。
8.根据权利要求6所述的一种改善COB LED显示屏色块的方法,其特征在于,LED芯片按照二维坐标文件的二维坐标在COB基板的阵列焊盘上进行随机分布,形成若干个由红绿蓝三色LED芯片组成的基本像素点,若干个基本像素点形成封装于COB显示屏内部的显示阵列,显示阵列为m行n列。
9.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,LED芯片的电极通过键合线与COB基板的焊盘连接导通。
10.根据权利要求1所述的一种改善COB LED显示屏色块的方法,其特征在于,COB基板包括铝基板、铜基板、陶瓷板或BT板中的一种。
CN202010244387.0A 2020-03-31 2020-03-31 一种改善cob led显示屏色块的方法 Pending CN111403344A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113410368A (zh) * 2021-05-31 2021-09-17 长春希龙显示技术有限公司 高均匀性集成led显示模块芯片混编封装方法
CN116190285A (zh) * 2023-04-28 2023-05-30 江西省兆驰光电有限公司 一种Mini LED器件提升可靠性的筛选封装工艺

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Publication number Priority date Publication date Assignee Title
JP2015031894A (ja) * 2013-08-06 2015-02-16 三菱電機株式会社 映像表示装置およびその製造方法
CN106531703A (zh) * 2016-12-20 2017-03-22 广州硅能照明有限公司 高性能倒装cob封装结构及其制作方法
CN110364423A (zh) * 2019-07-19 2019-10-22 深圳市科米三悠科技有限公司 一种cob显示模块固晶方法

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Publication number Priority date Publication date Assignee Title
JP2015031894A (ja) * 2013-08-06 2015-02-16 三菱電機株式会社 映像表示装置およびその製造方法
CN106531703A (zh) * 2016-12-20 2017-03-22 广州硅能照明有限公司 高性能倒装cob封装结构及其制作方法
CN110364423A (zh) * 2019-07-19 2019-10-22 深圳市科米三悠科技有限公司 一种cob显示模块固晶方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113410368A (zh) * 2021-05-31 2021-09-17 长春希龙显示技术有限公司 高均匀性集成led显示模块芯片混编封装方法
CN116190285A (zh) * 2023-04-28 2023-05-30 江西省兆驰光电有限公司 一种Mini LED器件提升可靠性的筛选封装工艺

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Application publication date: 20200710