CN104267544A - 一种显示基板及具有该显示基板的显示装置 - Google Patents
一种显示基板及具有该显示基板的显示装置 Download PDFInfo
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Abstract
本发明提供一种显示基板及具有该显示基板的显示装置,该显示基板包括:位于所述显示基板的对位区域的对位标识;以及位于所述对位标识周边预设区域的阻隔结构,所述阻隔结构用于阻挡摩擦取向辊摩擦取向时携带的残留颗粒。该阻隔结构能够将摩擦取向辊摩擦取向时携带的残留ITO等微小颗粒提前堆积在所述阻隔结构中,而不影响对位标识的样貌,从而避免对位标识样貌改变而导致的对位模糊或对位偏移的问题,使设备顺利识别对位标识,完成显示基板之间的对盒,大幅提高了生产的稳定性与效率,节约了成本。
Description
技术领域
本发明涉及显示技术领域,尤其涉及一种显示基板及具有该显示基板的显示装置。
背景技术
TFT-LCD(Thin Film Transistor Liquid Crystal Display,薄膜晶体管液晶显示屏)由薄膜晶体管(Thin Film Transistor,TFT)阵列基板和彩膜(Color Filter,CF)基板对盒而成,TFT基板和CF基板之间填充有液晶,通过控制TFT基板上的电压变化来驱动液晶的偏转,从而达到输出不同画面的要求。在成盒工艺中,最重要的一步就是对盒(Cell)技术,即将TFT基板和CF基板按照设计要求,在精度范围内完成对盒。请参考图1,图1为TFT基板101和CF基板102的对盒示意图。而对盒工艺中起到最重要作用,也是最关键部分的是用来对位的对位标识(Mark)103。若对位标识103出现问题,例如在TFT基板的摩擦取向过程中因TFT基板上的微小残留颗粒堆积而在对位标识的边缘处形成锯齿状残留,对盒必将无法准确完成,从而造成TFT-LCD出现各种不良,如Mura类不良,Zara类不良等。
发明内容
有鉴于此,本发明提供一种显示基板及具有该显示基板的显示装置,以解决在显示基板的摩擦取向过程中因显示基板上的微小残留颗粒堆积而在对位标识的边缘处形成锯齿状残留,导致显示基板对位不准的问题。
为解决上述技术问题,本发明提供一种显示基板,包括:位于所述显示基板的对位区域的对位标识;其特征在于,还包括:位于所述对位标识周边预设区域的阻隔结构,所述阻隔结构用于阻挡摩擦取向辊摩擦取向时携带的残留颗粒。
优选地,所述阻隔结构为沟壑状。
优选地,所述阻隔结构包括:多个平行间隔设置的线状凸起。
优选地,所述阻隔结构还包括:将所述对位标识围住的矩形框凸起,所述线状凸起位于所述矩形框凸起内。
优选地,在从远离所述对位标识至靠近所述对位标识的方向上,所述多个线状凸起的长度逐渐变短。
优选地,所述线状凸起的延伸方向与所述摩擦取向辊的前进方向垂直。
优选地,所述阻隔结构包括:多个呈同心分布的圆圈状凸起,所述对位标识位于所述多个圆圈状凸起的圆心区域。
优选地,所述阻隔结构包括:多个间隔设置的锯齿状凸起。
优选地,所述阻隔结构与所述对位标识具有相同的膜层结构。
优选地,所述阻隔结构包括至少一层金属层和用于覆盖所述金属层的绝缘层。
本发明还提供一种显示装置,包括上述显示基板。
本发明的上述技术方案的有益效果如下:
在对位标识周边预设区域形成阻隔结构,阻隔结构能够将摩擦取向辊摩擦取向时携带的残留ITO等微小颗粒提前堆积在所述阻隔结构中,而不影响对位标识的样貌,从而避免对位标识样貌改变而导致的对位模糊或对位偏移的问题,使设备顺利识别对位标识,完成显示基板之间的对盒,大幅提高了生产的稳定性与效率,节约了成本。
附图说明
图1为现有的TFT基板和CF基板上的对位标识的分布示意图;
图2为现有的TFT基板上的对位标识的放大俯视图;
图3为完美生产环境下TFT基板无ITO微小残留颗粒时对位标识的截面示意图;
图4为TFT基板有ITO微小残留颗粒时对位标识的截面示意图;
图5为现有的摩擦取向过程示意图;
图6为摩擦取向过程中ITO残留颗粒堆积产生过程示意图;
图7为正常的对位标识(左)和具有锯齿状残留的对位标识的比较示意图;
图8为本发明实施例的显示基板的截面图;
图9为本发明实施例的阻隔结构对微小残留颗粒的阻隔效果示意图;
图10为本发明实施例一的阻隔结构的俯视图;
图11为本发明实施例二的阻隔结构的俯视图;
图12为本发明实施例三的阻隔结构的俯视图;
图13为本发明实施例四的阻隔结构的俯视图;
图14为本发明实施例五的阻隔结构的俯视图。
附图标识说明
图1-7
101 TFT基板
102 CF基板
103 对位标识
301 衬底
302 金属层
303 绝缘层
401 残留的ITO微小颗粒
501 摩擦取向辊
图8-14
801 衬底
802 对位标识
803 阻隔结构
401 残留的ITO微小颗粒
501 摩擦取向辊
1001 线状凸起
1002 矩形框凸起
1301 圆圈状凸起
1401 锯齿状凸起
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚,下面将结合附图及具体实施例进行详细描述。
在TFT基板制作过程中,形成最上层的ITO(氧化铟锡)电极时,通常是先镀上一层ITO膜层,在没有电路图案的区域,将ITO膜层刻蚀掉,但是在实际的工艺中ITO膜层无法完全刻蚀,仍有微小颗粒残留,即通常所说的ITO Remain(残留)。请参考图2至图4,图2为现有的TFT基板上的对位标识的俯视图,图3为理想生产情况下无ITO微小残留颗粒时对位标识的截面示意图,对位标识103通常由设置于衬底301上的一层金属层302和一层绝缘层303组成,其中,金属层302通常与TFT基板的栅极金属层或源漏极金属层同时形成,图4为实际生产情况下有ITO微小残留颗粒时对位标识的截面示意图,图4中,401为残留的ITO微小颗粒。
对盒工艺主要包括:1)取向膜的涂覆;2)对盒;3)注入液晶。其中在取向膜的涂覆的过程中,会有一步Rubbing(摩擦取向)过程,即通过摩擦取向辊上的摩擦取向布对取向膜进行取向,使之符合液晶的初始排布。Rubbing的示意图如5所示,图5中,501为摩擦取向辊,箭头所指方向为摩擦取向辊501的滚动方向。由于在制作TFT基板的过程中会存在微小ITO颗粒的残留,在Rubbing过程中,会造成在TFT基板上的台阶处(对位标识103的边缘)造成ITO颗粒的堆积,使得对位标识103的边缘形成锯齿状残留。产生过程示意图如图6所示。图7左为理想情况下正常的对位标识,右为具有锯齿状残留的对位标识。
在对位过程中,机器无法识别上述对位标识边缘处的锯齿状残留,从而导致对位模糊或对位偏移的情况发生,对生产和产品造成很大的影响。
为解决因显示基板上的微小残留颗粒堆积而在对位标识的边缘处形成锯齿状残留,导致显示基板对位不准的问题,本发明实施例提供一种显示基板,包括:位于所述显示基板的对位区域的对位标识,以及位于所述对位标识周边预设区域的阻隔结构,所述阻隔结构用于阻挡摩擦取向辊摩擦取向时携带的残留颗粒。
所述周边预设区域位于摩擦取向辊摩擦取向时所经区域。需要说明的是,不限于在对位标识周边有摩擦取向辊摩擦取向经过的区域,在对位标识周边都可以设置阻隔结构,不管有无摩擦取向辊经过都可以起到阻隔作用。
由于对位标识周边预设区域形成阻隔结构,因而能够将摩擦取向辊摩擦取向时携带的残留ITO等颗粒堆积在所述阻隔结构中,而不影响对位标识的样貌,从而避免对位标识样貌改变而导致的对位模糊或对位偏移的问题,使设备顺利识别对位标识,完成显示基板之间的对盒,大幅提高了生产的稳定性与效率,节约了成本。
所述阻隔结构可以与所述显示基板上的膜层同时形成,以降低制备成本,当然,也可以单独制备所述阻隔结构。
所述阻隔结构可以与所述对位标识具有相同的膜层结构,以进一步降低制备成本,当然,所述阻隔结构也可以与所述对位标识具有不同的膜层结构。
所述对位标识通常是由一层金属层和用于覆盖所述金属层的绝缘层形成,例如,当所述显示基板为阵列基板时,所述金属层可以与所述阵列基板的栅金属层或者源漏金属层同时形成。所述绝缘层可以与所述阵列基板的钝化层,或其他绝缘层同时形成。前面提到,所述阻隔结构可以与所述对位标识具有相同的膜层结构,即所述阻隔结构也包括一层金属层和用于覆盖所述金属层的绝缘层。当然,所述阻隔结构也可以包括多层金属层和绝缘层。
本发明实施例中,阻隔结构对显示基板上的电路、显示区域以及对位标识不产生任何影响,实现成本较低。
请参考图8,图8为本发明实施例的显示基板的截面示意图,所述显示基板包括:衬底基板801,位于所述衬底基板801的对位区域的对位标识802,以及位于所述对位标识802的周边预设区域的阻隔结构803,所述阻隔结构803为沟壑状。
请参考图9,图9为本发明实施例的阻隔结构的阻隔效果示意图,从图9中可以看出,当摩擦取向辊摩擦取向时,其携带的ITO微小颗粒401会被阻隔结构803提前阻隔在其沟壑中,不会堆积到对位标识802的边缘,从而不影响对位标识的样貌,避免对位标识样貌改变而导致的对位模糊或对位偏移的问题。
本发明实施例中,阻隔结构用于阻隔残留ITO微小颗粒,当然,也可以阻隔显示基板上的其他微小颗粒。
本发明实施例中,显示基板可以为阵列基板,也可以为彩膜基板,或者其他类型的显示基板。
下面举例对所述阻隔结构的样貌进行说明。
请参考图10,图10为本发明实施例一的阻隔结构的俯视图,所述阻隔结构包括:多个平行间隔设置的线状凸起1001。
请参考图11,图11为本发明实施例二的阻隔结构的俯视图,所述阻隔结构包括:多个平行间隔设置的线状凸起1001以及将所述对位标识围住的矩形框凸起1002,所述线状凸起1001位于所述矩形框凸起1002内。
请参考图12,图12为本发明实施例三的阻隔结构的俯视图,所述阻隔结构包括:多个平行间隔设置的线状凸起1001,在从远离所述对位标识至靠近所述对位标识的方向上,所述多个线状凸起1001的长度逐渐变短。
上述实施例中,各线状凸起1001之间的间距可以相等,也可以不等。
上述实施例中,各线状凸起1001的延伸方向与摩擦取向辊的滚动方向垂直,当然,在本发明的其他实施例中,各线状凸起1001的延伸方向也可以不与摩擦取向辊的滚动方向垂直,例如,可以呈预设角度排列。
请参考图13,图13为本发明实施例四的阻隔结构的俯视图,所述阻隔结构包括:多个呈同心分布的圆圈状凸起1301,所述对位标识位于所述多个圆圈状凸起1301的圆心区域。
本发明实施例中,不同的对位标识对应的圆圈状凸起1301的个数可以相同,也可以不同。
请参考图14,图14为本发明实施例五的阻隔结构的俯视图,所述阻隔结构包括:多个间隔设置的锯齿状凸起1401。
当然,在本发明的其他一些实施例中,所述阻隔结构也可以为其他样貌,在此不再一一举例说明。
本发明实施例还提供一种显示装置,包括上述实施例中的显示基板。
以上所述是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (11)
1.一种显示基板,包括:位于所述显示基板的对位区域的对位标识;其特征在于,还包括:位于所述对位标识周边预设区域的阻隔结构,所述阻隔结构用于阻挡摩擦取向辊摩擦取向时携带的残留颗粒。
2.根据权利要求1所述的显示基板,其特征在于,所述阻隔结构为沟壑状。
3.根据权利要求2所述的显示基板,其特征在于,所述阻隔结构包括:多个平行间隔设置的线状凸起。
4.根据权利要求3所述的显示基板,其特征在于,所述阻隔结构还包括:将所述对位标识围住的矩形框凸起,所述线状凸起位于所述矩形框凸起内。
5.根据权利要求3所述的显示基板,其特征在于,在从远离所述对位标识至靠近所述对位标识的方向上,所述多个线状凸起的长度逐渐变短。
6.根据权利要求3所述的显示基板,其特征在于,所述线状凸起的延伸方向与所述摩擦取向辊的前进方向垂直。
7.根据权利要求2所述的显示基板,其特征在于,所述阻隔结构包括:多个呈同心分布的圆圈状凸起,所述对位标识位于所述多个圆圈状凸起的圆心区域。
8.根据权利要求2所述的显示基板,其特征在于,所述阻隔结构包括:多个间隔设置的锯齿状凸起。
9.根据权利要求1-8任一项所述的显示基板,其特征在于,所述阻隔结构与所述对位标识具有相同的膜层结构。
10.根据权利要求9所述的显示基板,其特征在于,所述阻隔结构包括至少一层金属层和用于覆盖所述金属层的绝缘层。
11.一种显示装置,其特征在于,包括如权利要求1-10任一项所述的显示基板。
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