CN109786434B - 阵列基板、其制备方法、显示面板、装置和像素驱动电路 - Google Patents
阵列基板、其制备方法、显示面板、装置和像素驱动电路 Download PDFInfo
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Abstract
本申请公开了一种阵列基板、其制备方法、显示面板、装置和像素驱动电路。该阵列基板包括:包括衬底基板,以及依次层叠形成在所述衬底基板上的走线层和发光层,所述走线层包括第一走线和第二走线,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影彼此分离,且所述第一走线和所述第二走线分别位于所述发光层下方两侧。本发明实施例的技术方案可以改善色偏现象。
Description
技术领域
本公开涉及显示技术领域,尤其涉及一种阵列基板、其制备方法、显示面板、装置和像素驱动电路。
背景技术
近年来,随着显示技术的进步,有机发光二极管(Organic Light EmittingDiode,OLED)显示器是当今平板显示器研究领域的热点之一,越来越多的有源矩阵有机发光二极管(Active Matrix Organic Light Emitting Diode,AMOLED)显示面板进入市场,相对于传统的薄膜晶体管液晶显示面板(Thin Film Transistor Liquid CrystalDisplay,TFTLCD),AMOLED具有更快的反应速度,更高的对比度以及更广大的视角。且随着显示技术的发展,越来越多的电子设备中开始使用轻薄且抗冲击特性表现良好的可弯折柔性OLED显示屏。
传统的显示技术都是采用单一的显示方式,在观看时,例如,当用户的观看方向从屏幕左侧改变为屏幕右侧方向时,液晶显示装置的亮度、对比度、色域和视角色偏(不同视角的颜色差异)等会发生变化,造成视觉效果降低,特别对一些高端显示或者特殊显示场所,例如医疗、平面设计等领域,对视角色偏要求较高,需要对普通显示面板的视角色偏进行改善。
OLED显示屏主要通过电流驱动电致发光器件发光而实现图像显示。当用户的观看角度变化时,显示屏的亮度、对比度等也会发生变化,出现色偏现象。因此,如何改善OLED显示区的色偏问题,提高显示面板的显示效果,是目前亟待解决的问题。
发明内容
鉴于现有技术中的上述缺陷或不足,期望提供一种能够提高掩膜版利用率以降低生产开发成本的显示基板的制备方案。
第一方面,本发明实施例提供了一种阵列基板,包括:
包括衬底基板,以及依次层叠形成在所述衬底基板上的走线层和发光层,所述走线层包括第一走线和第二走线,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影彼此分离,且所述第一走线和所述第二走线分别位于所述发光层下方两侧。
可选的,所述第一走线背向所述衬底基板的表面与所述第二走线背向所述衬底基板的表面平齐。
可选的,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影分别与所述发光层的两个边缘在所述衬底基板上的投影重叠。
可选的,所述第一走线和所述第二走线相对于所述发光层的中心线对称设置。
可选的,所述衬底基板包括柔性背板和形成在所述柔性背板上的层间介质层;
所述第一走线和所述第二走线形成在所述层间介质层背向所述柔性背板的表面。
可选的,所述第一走线为源漏极SD走线,所述第二走线为虚拟SD走线。
第二方面,本发明实施例还提供了一种显示面板,包括上述任一项所述的阵列基板。
第三方面,本发明实施例还提供了一种显示装置,包括上述显示面板。
第四方面,本发明实施例还提供了一种阵列基板的制备方法,包括:
提供一衬底基板,在所述衬底基板的表面形成走线层,所述走线层包括第一走线和第二走线,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影彼此分离,且所述第一走线和所述第二走线分别位于所述发光层下方两侧;
在所述走线层的表面形成发光层。
可选的,在所述衬底基板的表面形成走线层,包括:
在所述衬底基板的表面沉积金属层;
在所述金属层背向所述衬底基板的表面涂覆光刻胶,通过预先设置的掩膜版对所述光刻胶进行曝光和显影;
刻蚀所述金属层,获得所述第一走线和所述第二走线。
第五方面,本发明实施例还提供了一种基于上述任一项所述的阵列基板的像素驱动电路,包括:
第一薄膜晶体管(T1)、第二薄膜晶体管(T2)、第三薄膜晶体管(T3)、第四薄膜晶体管(T4)、第五薄膜晶体管(T5)、第六薄膜晶体管(T6)和第七薄膜晶体管(T7)、电容(C1)、有机发光二极管(D1)和第二走线,其中:
所述第一薄膜晶体管(T1)的源级电性连接所述虚拟SD走线,栅极电性连接复位信号,漏级电性连接第一节点;
所述第二薄膜晶体管(T2)的源级电性连接第二节点,漏级电性连接所述第一节点;
所述第三薄膜晶体管(T3)的源级电性连接所述第二节点,栅极电性连接所述第一节点,漏级电性连接第三节点;
所述第四薄膜晶体管(T4)的源级电性连接数据信号(Data),漏级电性连接所述第三节点;
所述第五薄膜晶体管(T5)的源级接入电源高电压(VDD),栅极接入发光控制信号(EM),漏级电性连接所述第三节点;
所述第六薄膜晶体管(T6)的源级电性连接所述第二节点,栅极接入发光控制信号(EM),漏级电性连接第四节点;
所述第七薄膜晶体管(T7)的源级电性连接电性连接所述虚拟SD走线,漏级电性连接所述第四节点;
所述有机发光二极管(D1)的阳极连接所述第四节点,阴极接入电源低电压(VSS);
所述电容(C1)的两端分别电性连接第一节点和电源高电压(VDD);
所述第二走线接入初始化信号。
本发明实施例提供的阵列基板,包括衬底基板以及依次层叠形成在衬底基板上的走线层和发光层,其中,走线层包括第一走线和第二走线,第一走线在衬底基板上的投影和第二走线在衬底基板上的投影彼此分离,且第一走线和第二走线分别设置在发光层下方两侧。与现有技术相比,该阵列基板的发光层下方两侧分别设置第一走线和第二走线,从而使得发光层的膜层厚度相等,亮度在两侧衰减一致,达到改善色偏的目的。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本申请的其它特征、目的和优点将会变得更明显:
图1为阵列基板走线层的一种排布方式俯视图;
图2为图1中阵列基板剖面图;
图3本发明实施例提供的一种阵列基板的结构示意图;
图4为本申请实施例中提供的走线层的排布方式俯视图;
图5为本发明实施例提供的一种阵列基板的制备方法的实现流程图;
图6为本发明实施例提供的像素驱动电路的示意图。
其中,附图标记:
10-衬底基板;20-走线层;30-平坦层;40-发光层;21-信号走线1;22-信号走线2;23-第一走线;24-第二走线。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是,此处所描述的具体实施例仅仅用于解释相关发明,而非对该发明的限定。另外还需要说明的是,为了便于描述,附图中仅示出了与发明相关的部分。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
首先,如图1和图2所示,分别为阵列基板走线层的一种排布方式的俯视图和剖面图。
参照图1和图2,在以GGRB排列的像素结构中,信号走线1位于发光层40的A区域下方,信号走线2位于发光层40的中心线下方,而发光层40的B区域下方不存在任何信号走线,这种偏像素一侧的分布方式会引起平坦层30倾斜,从而使得发光层40的A区域和B区域的高度不一致,即发光层40在A区域较高,B区域较低,从而使得像素倾斜,引起亮度在一侧衰减过慢,从而导致一侧发红,最终导致两侧RGB配色差异,当用户的观看角度变化时,显示屏的亮度、对比度等会发生变化,出现色偏现象。
鉴于上述缺陷,本发明实施例提供了一种阵列基板,能够改善色偏现象。
下面将参考附图并结合实施例来详细说明本申请。
如图3所示,为本发明实施例提供的一种阵列基板的结构示意图。
该阵列基板包括:
衬底基板10,以及依次层叠形成在衬底基板10上的走线层20和发光层40,走线层20包括第一走线23和第二走线24,其中,第一走线23在衬底基板10上的投影和第二走线24在衬底基板10上的投影彼此分离,且第一走线23和第二走线24分别位于发光层40的下方两侧。
其中,走线层20和发光层40之间还可以形成有平坦层30。
本申请实施例中,第一走线23可以对应图1中的信号走线1,而第二走线24是新增的虚拟走线,第二走线24仅仅是在外观上与第一走线23相似,其本身并没有第一走线23的功能,其作用主要是为了使A区域和B区域的膜层厚度相同。
可选的,第一走线23背向衬底基板1的表面与第二走线24背向衬底基板1的表面可以平齐。
可选的,第一走线23在衬底基板10上的投影和第二走线24在衬底基板10上的投影分别与发光层40的两个边缘在衬底基板10上的投影重叠。
另外,第一走线23和第二走线24还可以相对于发光层40的中心线对称设置。
可选的,上述第一走线23可以为源漏极(Source Drain,SD)走线,而第二走线24可以称为虚拟SD走线。
上述排布方式都可以进一步确保A区域和B区域的膜层厚度相同,亮度在两侧衰减一致,从而达到改善色偏的目的。
如图4所示,为本申请实施例中提供的走线层的排布方式俯视图。其中,B区域处的Dummy SD走线为本申请实施例中新增的虚拟SD走线。
进一步的,衬底基板10可以包括柔性背板和形成在柔性背板上的层间介质层(I nt e r-L a y e r Dielectric,ILD),其中:
第一走线23和第二走线24形成在层间介质层背向柔性背板的表面。
本发明实施例提供的阵列基板,包括衬底基板以及依次层叠形成在衬底基板上的走线层和发光层,其中,走线层包括第一走线和第二走线,第一走线在衬底基板上的投影和第二走线在衬底基板上的投影彼此分离,且第一走线和第二走线分别设置在发光层下方两侧。与现有技术相比,该阵列基板的发光层下方两侧分别设置第一走线和第二走线,从而使得发光层的膜层厚度相等,亮度在两侧衰减一致,达到改善色偏的目的。
参考图5,为本发明实施例中提供的阵列基板的制备方法的流程图。下面结合附图对该示例性的过程描述如下:
步骤51,提供一衬底基板,在衬底基板的表面形成走线层,走线层包括第一走线和第二走线,第一走线在衬底基板上的投影和第二走线在衬底基板上的投影彼此分离,且第一走线和第二走线分别位于发光层下方两侧。
具体的,首先在衬底基板的表面沉积金属层,然后在金属层背向衬底基板的表面涂覆光刻胶,通过预先设置的掩膜版对光刻胶进行曝光和显影,再刻蚀金属层,获得第一走线,比如SD走线和以及第二走线,比如虚拟SD走线。
另外,为了使本发明实施例中制备的阵列基板不易损坏,可选的,形成金属层之后,还可以在该金属层上形成用于保护该金属层的保护层。
步骤52,在走线层的表面形成发光层。
其中,在走线层的表面首先依次形成平坦层和电极层,再形成发光层。
基于同一发明构思,本发明实施例还提供了一种显示面板,包括上述阵列基板,该阵列基板按照上述阵列基板的制备方法制备。对于该显示面板的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的,在此不予赘述。
基于同一发明构思,本发明实施例还提供了一种显示装置,包括上述显示面板。
对于该显示面板的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的,在此不予赘述。
如图6所示,为基于上述阵列基板的像素驱动电路的示意图,其中,该像素驱动电路包括:
第一薄膜晶体管(T1)、第二薄膜晶体管(T2)、第三薄膜晶体管(T3)、第四薄膜晶体管(T4)、第五薄膜晶体管(T5)、第六薄膜晶体管(T6)和第七薄膜晶体管(T7)、电容(C1)、有机发光二极管(D1)和第二走线,其中:
所述第一薄膜晶体管(T1)的源级电性连接所述虚拟SD走线,栅极电性连接复位信号,漏级电性连接第一节点A;
所述第二薄膜晶体管(T2)的源级电性连接第二节点B,漏级电性连接所述第一节点A;
所述第三薄膜晶体管(T3)的源级电性连接所述第二节点B,栅极电性连接所述第一节点A,漏级电性连接第三节点C;
所述第四薄膜晶体管(T4)的源级电性连接数据信号(Data),漏级电性连接所述第三节点C;
所述第五薄膜晶体管(T5)的源级接入电源高电压(VDD),栅极接入发光控制信号(EM),漏级电性连接所述第三节点C;
所述第六薄膜晶体管(T6)的源级电性连接所述第二节点B,栅极接入发光控制信号(EM),漏级电性连接第四节点D;
所述第七薄膜晶体管(T7)的源级电性连接电性连接所述虚拟SD走线,漏级电性连接所述第四节点D;
所述有机发光二极管(D1)的阳极连接所述第四节点,阴极接入电源低电压(VSS);
所述电容(C1)的两端分别电性连接第一节点和电源高电压(VDD);
所述第二走线接入初始化信号,即Vinit信号。
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的发明范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离所述发明构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
Claims (10)
1.一种阵列基板,其特征在于,包括:
衬底基板,以及依次层叠形成在所述衬底基板上的走线层和发光层,所述走线层包括信号走线2、第一走线和第二走线,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影彼此分离,且所述第一走线和所述第二走线分别设置在所述发光层下方两侧,所述信号走线2位于所述第一走线和所述第二走线之间,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影分别与所述发光层的两个边缘在所述衬底基板上的投影重叠;
所述第二走线接入初始化信号;
在所述信号走线2和所述第一走线延伸方向上,所述第二走线的长度小于所述信号走线2的长度。
2.根据权利要求1所述的阵列基板,其特征在于,所述第一走线背向所述衬底基板的表面与所述第二走线背向所述衬底基板的表面平齐。
3.根据权利要求1所述的阵列基板,其特征在于,所述第一走线和所述第二走线相对于所述发光层的中心线对称设置。
4.根据权利要求1所述的阵列基板,其特征在于,所述衬底基板包括柔性背板和形成在所述柔性背板上的层间介质层;
所述第一走线和所述第二走线形成在所述层间介质层背向所述柔性背板的表面。
5.根据权利要求1-4任一项所述的阵列基板,其特征在于,所述第一走线为源漏极SD走线,所述第二走线为虚拟SD走线。
6.一种显示面板,其特征在于,包括如权利要求1至5任一项所述的阵列基板。
7.一种显示装置,其特征在于,包括如权利要求6所述的显示面板。
8.一种阵列基板的制备方法,其特征在于,包括:
提供一衬底基板,在所述衬底基板的表面形成走线层,在所述走线层的表面形成发光层,所述走线层包括信号走线2、第一走线和第二走线,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影彼此分离,且所述第一走线和所述第二走线分别位于所述发光层下方两侧;所述信号走线2位于所述第一走线和所述第二走线之间,所述第一走线在所述衬底基板上的投影和所述第二走线在所述衬底基板上的投影分别与所述发光层的两个边缘在所述衬底基板上的投影重叠;
所述第二走线接入初始化信号;
在所述信号走线2和所述第一走线延伸方向上,所述第二走线的长度小于所述信号走线2的长度。
9.根据权利要求8所述的制备方法,其特征在于,在所述衬底基板的表面形成走线层,包括:
在所述衬底基板的表面沉积金属层;
在所述金属层背向所述衬底基板的表面涂覆光刻胶,通过预先设置的掩膜版对所述光刻胶进行曝光和显影;
刻蚀所述金属层,获得所述第一走线和所述第二走线。
10.一种应用于权利要求1至5任一项所述的阵列基板的像素驱动电路,包括:
第一薄膜晶体管(T1)、第二薄膜晶体管 (T2)、第三薄膜晶体管(T3)、第四薄膜晶体管(T4)、第五薄膜晶体管(T5)、第六薄膜晶体管(T6)和第七薄膜晶体管(T7)、电容(C1)、有机发光二极管(D1)和第二走线,其中:
所述第一薄膜晶体管(T1)的源级电性连接所述第二走线,栅极电性连接复位信号,漏级电性连接第一节点;
所述第二薄膜晶体管(T2)的源级电性连接第二节点,漏级电性连接所述第一节点;
所述第三薄膜晶体管(T3)的源级电性连接所述第二节点,栅极电性连接所述第一节点,漏级电性连接第三节点;
所述第四薄膜晶体管(T4)的源级电性连接数据信号(Data),漏级电性连接所述第三节点;
所述第五薄膜晶体管(T5)的源级接入电源高电压(VDD),栅极接入发光控制信号(EM),漏级电性连接所述第三节点;
所述第六薄膜晶体管(T6)的源级电性连接所述第二节点,栅极接入发光控制信号(EM),漏级电性连接第四节点;
所述第七薄膜晶体管(T7)的源级电性连接电性连接虚拟SD走线,漏级电性连接所述第四节点;
所述有机发光二极管(D1)的阳极连接所述第四节点,阴极接入电源低电压(VSS);
所述电容(C1)的两端分别电性连接第一节点和电源高电压(VDD);
所述第二走线接入初始化信号。
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CN107230452A (zh) * | 2017-07-11 | 2017-10-03 | 深圳市华星光电半导体显示技术有限公司 | 一种像素驱动电路及驱动方法 |
CN207116482U (zh) * | 2017-08-31 | 2018-03-16 | 京东方科技集团股份有限公司 | 显示面板及显示装置 |
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US11581385B2 (en) | 2019-03-28 | 2023-02-14 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate having additional pad layer |
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2019
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CN109427854A (zh) * | 2017-08-31 | 2019-03-05 | 乐金显示有限公司 | 电致发光显示器 |
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CN114843313A (zh) | 2022-08-02 |
US20230120171A1 (en) | 2023-04-20 |
WO2020192585A1 (zh) | 2020-10-01 |
US20210233989A1 (en) | 2021-07-29 |
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