CN107331686A - Oled显示面板、线路结构及oled显示设备 - Google Patents
Oled显示面板、线路结构及oled显示设备 Download PDFInfo
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Abstract
本发明提供的OLED显示面板线路结构,OLED显示面板包括阵列基板,OLED显示面板线路结构包括设于所述阵列基板衬底的外引脚区,所述外引脚区上设置有两层相互绝缘的金属走线层,所述外引脚区设有弯折区,所述两层金属走线层的走线与所述弯折区的中心线呈非直角的夹角设置,所述金属走线层用于所述OLED显示面板与外部的电信号连接。
Description
技术领域
本发明涉及显示屏技术领域,尤其涉及一种OLED显示面板线路结构、OLED显示面板及OLED显示设备。
背景技术
目前平板显示行业的主流技术是LCD(Liquid Crystal Display,液晶显示器)和OLED(Organic Light-Emitting Diode,有机发光二极管),与LCD相比OLED具有可弯折性,可实现显示形态的多样化。
其中,OLED的TFT基板采用柔性板作为基板设置TFT,然后TFT基板上面依次为OLED发光层、TFE薄膜封装层、偏光片及盖板玻璃,外引脚区设于基板上位置位于TFT基板一侧;外引脚区用于设置驱动芯片、连接柔性线路板等并设置OLED发光层与芯片线路板的金属走线层。目前实现柔性主流的方式是将设有外引脚区的基板部分弯折到TFT基板整体的背面,如此就要将金属走线层一并弯折,弯折后金属走线层处于弯曲状态并承受一定应力,而基板的弯折应力较大,金属走线层与基板一同弯折容易产生断裂。
发明内容
本发明提供一种OLED显示面板,解决外引脚区在弯折时金属走线层被折断的技术问题。
本发明提供的所述OLED显示面板线路结构,OLED显示面板包括阵列基板,OLED显示面板线路结构包括设于所述阵列基板衬底的外引脚区,所述外引脚区上设置有两层相互绝缘的金属走线层,所述外引脚区设有弯折区,所述两层金属走线层的走线与所述弯折区的中心线呈非直角的夹角设置,所述两层金属走线层用于将所述OLED显示面板与外部的电信号连接。
其中,两层所述金属走线层为沿着所述OLED显示面板厚度方向上下层设置并通过绝缘层绝缘。
其中,所述阵列基板包括形成于衬底上的TFT开关及栅极绝缘层,所述第一层金属走线层设于位于外引脚区的所述栅极绝缘层上,所述第二层金属走线层设于覆盖所述外引脚区的第一层金属层的绝缘层上。
其中,所述两层金属走线层的走线在所述外引脚区上的投影有相交但不完全重叠,且相交的位置位于所述弯折中心线两侧或者弯折中心线上。
本发明提供的OLED显示面板,其特征在于,包括阵列基板及外引脚区,层叠于所述阵列基板上的OLED发光层、偏光片及玻璃盖板,所述阵列基板包括衬底,其特征在于,所述外引脚区上设置有至少两层相互绝缘的金属走线层,所述外引脚区设有弯折区,所述两层金属走线层的走线与所述弯折区的中心线呈非直角的夹角设置,所述两层金属走线层用于将所述OLED显示面板与外部的电信号连接。
其中,所述两层金属走线层为沿着所述OLED显示面板厚度方向上下层设置并通过绝缘层绝缘。
其中,所述阵列基板包括形成于衬底上的TFT开关及栅极绝缘层,所述两层金属走线层中的第一层金属走线层设于位于外引脚区的所述栅极绝缘层上,所述两层金属走线层中的第二层金属走线层设于覆盖所述外引脚区的第一层金属层的绝缘层上。
其中,两层金属走线层的走线在所述外引脚区上的投影有相交但不完全重叠,且相交的位置位于所述弯折中心线两侧或者弯折中心线上。
其中,还包括柔性线路板,所述柔性线路板连接于所述外引脚区并通过所述金属走线层与所述OIED显示面板连接。
本发明提供的OLED显示设备,包括所述的OLED显示面板。
本发明所述OLED显示面板在外引脚区沿着弯折区域的中心线向阵列基板的背面弯折时,两层金属走线层的走线与弯折中心线的夹角非90度直角,那么在走线随着衬底弯折时,所述走线弯折方向是倾斜的,增大走线接触面积,减小单位长度受力,这样就可以减小对走线的直接应力,解决外引脚区在弯折时金属走线层被折断的技术问题。
附图说明
为更清楚地阐述本发明的构造特征和功效,下面结合附图与具体实施例来对其进行详细说明。
图1是本发明OLED显示面板的结构侧面示意简图。
图2是本发明OLED显示面板走线结构的侧面示意简图。
图3是图2所示的OLED显示面板走线结构的平面示意图。
图4是图3所示的OLED显示面板走线结构的走线与弯折中心线的示意图。
具体实施例
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述。其中,附图仅用于示例性说明,表示的仅是示意图,不能理解为对本专利的限制。
请参阅图1,本发明提供一种OLED显示面板线路结构及OLED显示面板,所述OLED显示面板线路结构用于OLED显示面板上为OLED显示面板与外界电信号连接提供线路。所述OLED显示面板包括阵列基板10,层叠于所述阵列基板10上的OLED发光层12、偏光片13及玻璃盖板14。所述阵列基板10包括衬底101。
如图2与图3,所述OLED显示面板线路结构包括外引脚区20,所述外引脚区20为衬底的延伸端。所述外引脚区20上设置有至少两层相互绝缘的金属走线层,本实施例中,以两层金属走线层为例进行说明,两层所述金属走线层分别为金属走线层21及金属走线层22,所述外引脚区20设有弯折区,两层所述金属走线层21、22的走线与所述弯折区的中心线O呈非直角的夹角A(图3)设置,所述金属走线层用于所述OLED显示面板与外部的电信号连接。
在其它实施方式中,所述相互绝缘的金属走线层可以为3层且叠加设置,通过绝缘层间隔绝缘,当然也可以是4层并通过绝缘层间隔。只要是在不影响外引脚区20弯折得前提下根据设计需求设计多层的金属走线都是在本发明保护范围内。
如图2所示,进一步的,每一层金属走线层为多个间隔设置的金属线形成。所述金属走线层层21、金属走线层22的为沿着所述OLED显示面板厚度方向上下层设置并通过绝缘层23绝缘。金属走线层21及金属走线层22的走线均是从OLED发光层12分两层引出或者在同一层引出后再通过过孔分层,本实施例中,金属走线层21位于金属走线层22下方,金属走线层22的走线通过穿过绝缘层23的过孔布置于所述绝缘层23表面。具体的,所述阵列基板10包括形成于衬底101上的TFT开关及栅极绝缘层102,所述第一层金属走线层(金属走线层21)设于位于外引脚区20的所述栅极绝缘层102上,所述第二层金属走线层(金属走线层22)设于覆盖所述外引脚区20的第一层金属层的绝缘层23上。金属走线层21、金属走线层22的走线宽度为8~10μm,走线之间的距离宽度为10~12μm。金属走线层21的走线宽度增加,相应对电信号的阻抗也会减小;同时,由于线之间的间距增大,在制作线路时对掩膜板精度要求低,相应的良率也会有提高。
如图3所示,所述两层金属走线层的走线在所述外引脚区20上的投影有相交但不完全重叠,且相交的位置位于所述弯折中心线O两侧或者弯折中心线O上。如图3所示,金属走线层21的走线由驱动芯片延伸出后向右侧弯曲后在继续延伸,而金属走线层22的走线由驱动芯片延伸出后向左侧弯曲后在继续延伸。在外引脚区20的投影上,由于两层金属走线层的走线弯曲方向不同,所以上一层的走线与下一层的走线在投影上有交叉,而且同一层的走线与另一层的走线是一对一的交叉,也就是说一个走线只与一个走线交叉。当然在需要设置多条走线时,每一层的走线可以布满整层区域,所以,本发明的外引脚区20金属走线的布局,可以增加线宽和两条线之间的距离,同时减小单位长度受力,保证金属走线传递电信号的良率。如果在需要多条走线时,同样可以保证现有技术的线宽和线距离,但比现有技术多了一整层的走线,可以灵活使用。
本发明所述OLED显示面板的阵列基板10、OLED发光层12、偏光片13及玻璃盖板14依次层叠设置,所述OLED发光层12上还设有TFT薄膜封装层16。OLED显示面板是通过电流的大小控制OLED发光层12发光的强弱。外界光容易反射回来OLED显示面板并且会影响对比度,偏光片13便可解决这个问题,保证OLED显示面板显示质量TFT薄膜封装层16具有水氧阻隔性可以阻挡外界水汽污染TFT开关。
如图1,所述OLED显示面板还包括柔性线路板25,所述柔性线路板25连接于所述外引脚区20并通过所述金属走线层的部分走线与所述OLED发光层12连接。所述柔性线路板25通过焊接,或者插接的方式装于所述外引脚区20,外引脚区20上还设有芯片装置26,所述芯片装置26通过所述金属走线层的部分走线与所述OLED发光层12连接。
所述OLED显示面板在封装或者与外壳组装时,外引脚区20沿着弯折区域的中心线向阵列基板10的背面弯折,金属线路弯曲状态与弯曲程度相关,弯曲程度用曲率半径r表示,r越小,对应弯曲程度约大。两层金属走线层的走线与弯折中心线的夹角A非90度直角,如图4,那么在走线随着衬底弯折时,所述走线弯折方向是倾斜的,如同螺纹走向一样的倾斜,增大走线接触面积,减小单位长度受力,这样就可以减小对走线的直接应力,整条线路可以通过合理布局减小阻抗提高外引脚区的走线的抗弯折性能。解决外引脚区在弯折时金属走线层被折断的技术问题。
本发明还提供一种OLED显示设备,包括所述的OLED显示面板。
以上所述是本发明的优选实施例,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也视为本发明的保护范围。
Claims (10)
1.一种OLED显示面板线路结构,OLED显示面板包括阵列基板,其特征在于,OLED显示面板线路结构包括设于所述阵列基板衬底的外引脚区,所述外引脚区上设置有两层相互绝缘的金属走线层,所述外引脚区设有弯折区,所述两层金属走线层的走线与所述弯折区的中心线呈非直角的夹角设置,所述两层金属走线层用于将所述OLED显示面板与外部的电信号连接。
2.如权利要求1所述的OLED显示面板线路结构,其特征在于,两层所述金属走线层为沿着所述OLED显示面板厚度方向上下层设置并通过绝缘层绝缘。
3.如权利要求2所述的OLED显示面板线路结构,其特征在于,所述阵列基板包括形成于衬底上的TFT开关及栅极绝缘层,所述两层金属走线层中的的第一层金属走线层设于位于外引脚区的所述栅极绝缘层上,所述两层金属走线层中的第二层金属走线层设于覆盖所述外引脚区的第一层金属层的绝缘层上。
4.如权利要求3所述的OLED显示面板线路结构,其特征在于,所述两层金属走线层的走线在所述外引脚区上的投影有相交但不完全重叠,且相交的位置位于所述弯折中心线两侧或者弯折中心线上。
5.一种OLED显示面板,其特征在于,包括阵列基板及外引脚区,层叠于所述阵列基板上的OLED发光层、偏光片及玻璃盖板,所述阵列基板包括衬底,其特征在于,所述外引脚区上设置有至少两层相互绝缘的金属走线层,所述外引脚区设有弯折区,所述两层金属走线层的走线与所述弯折区的中心线呈非直角的夹角设置,所述两层金属走线层用于将所述OLED显示面板与外部的电信号连接。
6.如权利要求5所述的OLED显示面板,其特征在于,所述两层金属走线层为沿着所述OLED显示面板厚度方向上下层设置并通过绝缘层绝缘。
7.如权利要求6所述的OLED显示面板,其特征在于,所述阵列基板包括形成于衬底上的TFT开关及栅极绝缘层,所述两层金属走线层中的第一层金属走线层设于位于外引脚区的所述栅极绝缘层上,所述两层金属走线层中的第二层金属走线层设于覆盖所述外引脚区的第一层金属层的绝缘层上。
8.如权利要求7所述的OLED显示面板,其特征在于,两层金属走线层的走线在所述外引脚区上的投影有相交但不完全重叠,且相交的位置位于所述弯折中心线两侧或者弯折中心线上。
9.如权利要求5所述的OLED显示面板,其特征在于,还包括柔性线路板,所述柔性线路板连接于所述外引脚区并通过所述金属走线层与所述OIED显示面板连接。
10.一种OLED显示设备,其特征在于,包括权利要求5-9任一项所述的OLED显示面板。
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