CN105788501A - 有机电致发光显示面板、老化测试装置、方法及显示装置 - Google Patents
有机电致发光显示面板、老化测试装置、方法及显示装置 Download PDFInfo
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Abstract
本发明公开了一种有机电致发光显示面板、老化测试装置、方法及显示装置,一个信号发生器同时驱动多个并联的有机电致发光显示面板,可以保证老化测试的高效率,由于在老化测试装置中增加与各有机电致发光显示面板一一对应的多个开关,每个开关可以在对应的有机电致发光显示面板异常时将对应的有机电致发光显示面板与所有第一信号端断开连接,因此,可以在对各有机电致发光显示面板逐个检测是否异常,利用开关将异常的有机电致发光显示面板与所有第一信号端断开连接之后,再对正常的有机电致发光显示面板进行老化测试,从而可以在保证老化测试的高效率的前提下,避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
Description
技术领域
本发明涉及显示技术领域,尤其涉及一种有机电致发光显示面板、老化测试装置、方法及显示装置。
背景技术
在现有的显示面板中,有机电致发光显示面板(OrganicElectroluminescentDisplay,OLED)凭借制备工艺简单、成本低、发光效率高以及易形成柔性结构等优点,成为目前较为重要的显示面板。
在现有的OLED的生产过程中,一般会在封装完成之后对其进行老化测试,以保证OLED的稳定性和可靠性。老化测试的过程一般为利用信号发生器对OLED加载预设电压并维持预设时长。
为了降低老化测试的成本,提高老化测试的效率,可以利用一个信号发生器同时驱动多个OLED。多个OLED并联连接后与信号发生器中的共用信号端电性连接。由于多个OLED并联连接,因此,在对并联的多个OLED进行老化测试的过程中,如果某个OLED存在异常,会导致与其并联的其他OLED出现同样的异常。
因此,如何在保证老化测试的高效率的前提下,避免异常OLED对与其并联的其他正常OLED造成影响,是本领域技术人员亟需解决的技术问题。
发明内容
有鉴于此,本发明实施例提供了一种有机电致发光显示面板、老化测试装置、方法及显示装置,用以在保证老化测试的高效率的前提下,避免异常OLED对与其并联的其他正常OLED造成影响。
因此,本发明实施例提供了一种有机电致发光显示面板的老化测试装置,包括:信号发生器;所述信号发生器包括至少一个第一信号端和多个第二信号端;其中,每个所述第一信号端分别与多个所述有机电致发光显示面板电性连接,每个所述第二信号端与一个所述有机电致发光显示面板电性连接;还包括:与各所述有机电致发光显示面板一一对应的多个开关;
每个所述开关用于在对应的所述有机电致发光显示面板异常时将对应的所述有机电致发光显示面板与所述至少一个第一信号端断开连接。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试装置中,所述信号发生器包括多个第一信号端;每个所述开关包括:与各所述第一信号端一一对应的多个薄膜晶体管;
所述信号发生器还包括:与各所述开关一一对应的多个第三信号端;每个所述开关中的各所述薄膜晶体管的栅极均与对应的所述第三信号端电性连接,每个所述开关中的各所述薄膜晶体管的源极分别与对应的所述第一信号端电性连接,每个所述开关中的各所述薄膜晶体管的漏极均与对应的所述有机电致发光显示面板电性连接。
本发明实施例还提供了一种老化测试方法,包括:
依次对每个有机电致发光显示面板加载电压信号并维持第一预设时长;
确定每个所述有机电致发光显示面板是否正常;
在确定出异常的所述有机电致发光显示面板时,将异常的所述有机电致发光显示面板与所有所述第一信号端断开连接,对正常的所述有机电致发光显示面板加载电压信号并维持第二预设时长。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试方法中,对正常的所述有机电致发光显示面板加载电压信号并维持第二预设时长,具体包括:
对正常的所述有机电致发光显示面板同时加载电压信号并维持第二预设时长。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试方法中,在确定每个所述有机电致发光显示面板是否正常之后,还包括:
在各所述有机电致发光显示面板全部正常时,对各所述有机电致发光显示面板同时加载电压信号并维持第二预设时长。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试方法中,所述确定每个所述有机电致发光显示面板是否正常,具体包括:
检测每个所述有机电致发光显示面板的电流是否正常。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试方法中,所述确定每个所述有机电致发光显示面板是否正常,具体包括:
拍摄每个所述有机电致发光显示面板的显示画面,确定每个所述有机电致发光显示面板是否正常。
在一种可能的实现方式中,在本发明实施例提供的上述老化测试方法中,所述第一预设时长小于所述第二预设时长。
本发明实施例还提供了一种有机电致发光显示面板,所述有机电致发光显示面板为利用本发明实施例提供的上述老化测试方法老化后的有机电致发光显示面板。
本发明实施例还提供了一种显示装置,包括:本发明实施例提供的上述有机电致发光显示面板。
本发明实施例提供的上述有机电致发光显示面板、老化测试装置、方法及显示装置,一个信号发生器同时驱动多个并联的有机电致发光显示面板,可以保证老化测试的高效率,由于在老化测试装置中增加与各有机电致发光显示面板一一对应的多个开关,每个开关可以在对应的有机电致发光显示面板异常时将对应的有机电致发光显示面板与所有第一信号端断开连接,因此,可以在对各有机电致发光显示面板逐个检测是否异常,利用开关将异常的有机电致发光显示面板与所有第一信号端断开连接之后,再对正常的有机电致发光显示面板进行老化测试,从而可以在保证老化测试的高效率的前提下,避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
附图说明
图1和图2分别为本发明实施例提供的有机电致发光显示面板的老化测试装置的结构示意图;
图3-图6分别为本发明实施例提供的老化测试方法的流程图。
具体实施方式
下面结合附图,对本发明实施例提供的有机电致发光显示面板、老化测试装置、方法及显示装置的具体实施方式进行详细地说明。
本发明实施例提供的一种有机电致发光显示面板的老化测试装置,如图1所示,包括:信号发生器1;信号发生器1包括至少一个第一信号端11和多个第二信号端12;其中,每个第一信号端11分别与多个有机电致发光显示面板2电性连接,每个第二信号端12与一个有机电致发光显示面板2电性连接;还包括:与各有机电致发光显示面板2一一对应的多个开关3;
每个开关3用于在对应的有机电致发光显示面板2异常时将对应的有机电致发光显示面板2与至少一个第一信号端11断开连接。
本发明实施例提供的上述老化测试装置,一个信号发生器同时驱动多个并联的有机电致发光显示面板,可以保证老化测试的高效率,由于在老化测试装置中增加与各有机电致发光显示面板一一对应的多个开关,每个开关可以在对应的有机电致发光显示面板异常时将对应的有机电致发光显示面板与所有第一信号端断开连接,因此,可以在对各有机电致发光显示面板逐个检测是否异常,利用开关将异常的有机电致发光显示面板与所有第一信号端断开连接之后,再对正常的有机电致发光显示面板进行老化测试,从而可以在保证老化测试的高效率的前提下,避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
在具体实施时,在本发明实施例提供的上述老化测试装置中,第一信号端可以包括时序信号端和电流值较小的电源信号端等,第二信号端可以包括电流值较大的电源信号端,例如,ELPower。
在具体实施时,在本发明实施例提供的上述老化测试装置中,如图2所示,信号发生器1包括多个第一信号端11;每个开关3可以包括:与各第一信号端11一一对应的多个薄膜晶体管30(ThinFilmTransistor,TFT);由于薄膜晶体管在导通时电阻较小,因此,不会对信号发生器驱动有机电致发光显示面板产生影响;信号发生器1还可以包括:与各开关3一一对应的多个第三信号端13;每个开关3中的各薄膜晶体管30的栅极均与对应的第三信号端13电性连接,每个开关3中的各薄膜晶体管30的源极分别与对应的第一信号端11电性连接,每个开关3中的各薄膜晶体管30的漏极均与对应的有机电致发光显示面板2电性连接;这样,可以利用信号发生器1中的各第三信号端13控制对应的开关3中的各薄膜晶体管30同时开启或同时关闭。
当然,在本发明实施例提供的上述老化测试装置中,开关的结构并非局限于如图2所示的薄膜晶体管,还可以为电阻较小的其他类型的开关结构,在此不做限定。
基于本发明实施例提供的上述老化测试装置,本发明实施例还提供了一种老化测试方法,如图3所示,包括如下步骤:
S301、依次对每个有机电致发光显示面板加载电压信号并维持第一预设时长;
S302、确定每个有机电致发光显示面板是否正常;在确定出异常的有机电致发光显示面板时,执行步骤S303和步骤S304;
S303、将异常的有机电致发光显示面板与所有第一信号端断开连接;
S304、对正常的有机电致发光显示面板加载电压信号并维持第二预设时长。
本发明实施例提供的上述方法,先对各有机电致发光显示面板逐个进行检测,确定每个有机电致发光显示面板是否正常,在确定出异常的有机电致发光显示面板时,将异常的有机电致发光显示面板与信号发生器中的所有第一信号端断开连接,再对正常的有机电致发光显示面板进行老化测试,这样,可以在保证老化测试的高效率的前提下,避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
需要说明的是,在执行本发明实施例提供的上述方法中的步骤S301,依次对每个有机电致发光显示面板加载电压信号并维持第一预设时长,步骤S302,确定每个有机电致发光显示面板是否正常,以及步骤S303,将异常的有机电致发光显示面板与所有第一信号端断开连接时,可以先对第一个有机电致发光显示面板加载电压信号,确定该有机电致发光显示面板是否正常,若该有机电致发光显示面板异常,将该有机电致发光显示面板与所有第一信号端断开连接,然后对下一个有机电致发光显示面板加载电压信号,依此类推;或者,也可以在完成对所有有机电致发光显示面板加载电压信号之后再确定各有机电致发光显示面板中是否存在异常的有机电致发光显示面板,若存在异常的有机电致发光显示面板,将异常的有机电致发光显示面板与所有第一信号端断开连接;在此不做限定。
在具体实施时,在执行本发明实施例提供的上述方法中的步骤S304,对正常的有机电致发光显示面板加载电压信号并维持第二预设时长,具体可以通过以下方式来实现:对正常的有机电致发光显示面板同时加载电压信号并维持第二预设时长;这样,可以最大限度地提高老化测试的效率。
当然,在本发明实施例提供的上述方法中,也可以将正常的各有机电致发光显示面板划分为多组,控制与每组中的各有机电致发光显示面板对应的多个开关开启,对该组中的各有机电致发光显示面板同时加载电压信号并维持第二预设时长,在此不做限定。
在具体实施时,在执行本发明实施例提供的上述方法中的步骤S302,确定每个有机电致发光显示面板是否正常之后,在各有机电致发光显示面板全部正常时,如图4所示,还可以包括如下步骤:
S401、对各有机电致发光显示面板同时加载电压信号并维持第二预设时长。
在具体实施时,在执行本发明实施例提供的上述方法中的步骤S302,确定每个有机电致发光显示面板是否正常时,如图5所示,具体可以包括如下步骤:
S501、检测每个有机电致发光显示面板的电流是否正常。
在具体实施时,在执行本发明实施例提供的上述方法中的步骤S302,确定每个有机电致发光显示面板是否正常时,如图6所示,具体可以包括如下步骤:
S601、拍摄每个有机电致发光显示面板的显示画面,确定每个有机电致发光显示面板是否正常。
当然,在本发明实施例提供的上述方法中,步骤S302,确定每个有机电致发光显示面板是否正常的实现方式并非局限于如图5和图6所示的确定方式,还可以为其他类似的确定方式,在此不做限定。
在具体实施时,在本发明实施例提供的上述方法中,由于对每个有机电致发光显示面板进行检测的时长小于对正常的各有机电致发光显示面板进行老化测试的时长,因此,第一预设时长小于第二预设时长。
较佳地,在本发明实施例提供的上述方法中,为了能够既保证对每个有机电致发光显示面板检测的高准确率,又能提高老化测试的效率,可以将第一预设时长控制在1s至10s范围。
较佳地,在本发明实施例提供的上述方法中,为了保证老化测试的良好效果,可以将第二预设时长控制在20min至30min范围。
基于同一发明构思,本发明实施例还提供了一种有机电致发光显示面板,有机电致发光显示面板为利用本发明实施例提供的上述老化测试方法老化后的有机电致发光显示面板。该有机电致发光显示面板的实施可以参见上述老化测试方法的实施例,重复之处不再赘述。
基于同一发明构思,本发明实施例还提供了一种显示装置,包括本发明实施例提供的上述有机电致发光显示面板,该显示装置可以为:手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述有机电致发光显示面板的实施例,重复之处不再赘述。
本发明实施例提供的一种有机电致发光显示面板、老化测试装置、方法及显示装置,一个信号发生器同时驱动多个并联的有机电致发光显示面板,可以保证老化测试的高效率,由于在老化测试装置中增加与各有机电致发光显示面板一一对应的多个开关,每个开关可以在对应的有机电致发光显示面板异常时将对应的有机电致发光显示面板与所有第一信号端断开连接,因此,可以在对各有机电致发光显示面板逐个检测是否异常,利用开关将异常的有机电致发光显示面板与所有第一信号端断开连接之后,再对正常的有机电致发光显示面板进行老化测试,从而可以在保证老化测试的高效率的前提下,避免异常的有机电致发光显示面板对与其并联的其他有机电致发光显示面板造成影响。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (10)
1.一种有机电致发光显示面板的老化测试装置,包括:信号发生器;所述信号发生器包括至少一个第一信号端和多个第二信号端;其中,每个所述第一信号端分别与多个所述有机电致发光显示面板电性连接,每个所述第二信号端与一个所述有机电致发光显示面板电性连接;其特征在于,还包括:与各所述有机电致发光显示面板一一对应的多个开关;
每个所述开关用于在对应的所述有机电致发光显示面板异常时将对应的所述有机电致发光显示面板与所述至少一个第一信号端断开连接。
2.如权利要求1所述的老化测试装置,其特征在于,所述信号发生器包括多个第一信号端;每个所述开关包括:与各所述第一信号端一一对应的多个薄膜晶体管;
所述信号发生器还包括:与各所述开关一一对应的多个第三信号端;每个所述开关中的各所述薄膜晶体管的栅极均与对应的所述第三信号端电性连接,每个所述开关中的各所述薄膜晶体管的源极分别与对应的所述第一信号端电性连接,每个所述开关中的各所述薄膜晶体管的漏极均与对应的所述有机电致发光显示面板电性连接。
3.一种如权利要求1或2所述的老化测试装置的老化测试方法,其特征在于,包括:
依次对每个有机电致发光显示面板加载电压信号并维持第一预设时长;
确定每个所述有机电致发光显示面板是否正常;
在确定出异常的所述有机电致发光显示面板时,将异常的所述有机电致发光显示面板与所有所述第一信号端断开连接,对正常的所述有机电致发光显示面板加载电压信号并维持第二预设时长。
4.如权利要求3所述的方法,其特征在于,对正常的所述有机电致发光显示面板加载电压信号并维持第二预设时长,具体包括:
对正常的所述有机电致发光显示面板同时加载电压信号并维持第二预设时长。
5.如权利要求3所述的方法,其特征在于,在确定每个所述有机电致发光显示面板是否正常之后,还包括:
在各所述有机电致发光显示面板全部正常时,对各所述有机电致发光显示面板同时加载电压信号并维持第二预设时长。
6.如权利要求3所述的方法,其特征在于,所述确定每个所述有机电致发光显示面板是否正常,具体包括:
检测每个所述有机电致发光显示面板的电流是否正常。
7.如权利要求3所述的方法,其特征在于,所述确定每个所述有机电致发光显示面板是否正常,具体包括:
拍摄每个所述有机电致发光显示面板的显示画面,确定每个所述有机电致发光显示面板是否正常。
8.如权利要求3-7任一项所述的方法,其特征在于,所述第一预设时长小于所述第二预设时长。
9.一种有机电致发光显示面板,其特征在于,所述有机电致发光显示面板为利用如权利要求3-8任一项所述的老化测试方法老化后的有机电致发光显示面板。
10.一种显示装置,其特征在于,包括:如权利要求9所述的有机电致发光显示面板。
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