CN106653770A - 一种显示面板及其阵列基板 - Google Patents

一种显示面板及其阵列基板 Download PDF

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CN106653770A
CN106653770A CN201611229786.XA CN201611229786A CN106653770A CN 106653770 A CN106653770 A CN 106653770A CN 201611229786 A CN201611229786 A CN 201611229786A CN 106653770 A CN106653770 A CN 106653770A
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touch control
array base
base palte
self
control line
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蔡育徵
马长文
张洲
徐盼
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to CN201611229786.XA priority Critical patent/CN106653770A/zh
Priority to PCT/CN2016/113180 priority patent/WO2018119932A1/zh
Priority to US15/328,433 priority patent/US20180292693A1/en
Publication of CN106653770A publication Critical patent/CN106653770A/zh
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    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
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    • H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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    • H01L27/1255—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
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Abstract

本发明涉及液晶显示技术领域，尤其是公开一种阵列基板，通过将触控线路与源/漏极制作于同一层，由触控线路接收驱动电路发出的触控信号、并发送给第一透明导电层。本发明的阵列基板是自电容式触摸传感器，实现内嵌式触控功能。与现有技术相比，本发明节省了一道金属层与一道绝缘层的制作，从而达到减少工艺制程、节约原料的目的，进而实现缩短TFT基板的制程时间以及降低TFT基板的制造成本的效果。本发明的TFT基板，具有内嵌式触控功能，且结构简单，制作成本低。

Description

一种显示面板及其阵列基板
技术领域
本发明属于液晶显示技术领域，具体地讲，涉及一种阵列基板。
背景技术
随着显示技术的发展，触控显示面板已经广泛地被人们所接受及使用，如智能手机、平板电脑等均使用了触控显示面板。触控显示面板采用嵌入式触控技术将触控面板和液晶显示面板结合为一体，使得液晶显示面板同时具备显示和感知触控输入的功能，被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
通常液晶显示面板由彩色滤光(CF，Color Filter)基板、阵列(TFT，T阵列基板inFilm Transistor)基板、夹于彩色滤光基板与阵列基板之间的液晶(LC，Liquid Crystal)及密封胶框(Sealant)组成，其成型工艺一般包括：前段阵列(Array)制程(薄膜、黄光、蚀刻及剥膜)、中段成盒(Cell)制程(TFT基板与CF基板贴合)及后段模组组装制程(驱动IC与印刷电路板压合)。其中，前段Array制程主要是形成TFT基板，以便于控制液晶分子的运动；中段Cell制程主要是在TFT基板与CF基板之间添加液晶；后段模组组装制程主要是驱动IC压合与印刷电路板的整合，进而驱动液晶分子转动，显示图像。
触控显示面板根据结构不同可划分为触控电极覆盖于液晶盒上式(On Cell)、触控电极内嵌在液晶盒内式(In Cell)、以及外挂式。其中，In Cell式具有成本低、超薄、和窄边框的优点，主要应用在高端触控产品中，已演化为触控技术的主要发展方向。
如图1所示，现有的用于内嵌式触控显示面板中的TFT基板，其包括：衬底100、遮光层200、缓冲层300、多晶硅层400、栅极绝缘层500、栅极520、第一层间绝缘层600、源/漏极610、平坦层700、第一透明导电层810与触控电极(M3层)820、第二层间绝缘层(IL)850和钝化层900、及像素电极950。其中，所述触控电极与第一透明导电层810位于同一层，且与第一透明导电层与像素电极之间间隔有第二层间绝缘层850以及钝化层，因此，这会造成TFT基板的制程时间较长，厚度增大，且生产本较高。
发明内容
为了解决上述现有技术存在的问题，本发明提供一种阵列基板，能够进一得到结构简化。
这种阵列基板包括：衬底、设置于所述衬底上的多条数据线和栅极线以及由所述数据线、栅极线围成的多个子像素单元；所述子像素单元包括：
像素电极，以及
薄膜晶体管，其包括栅极和源/漏极，所述栅极与所述栅极线电连接，所述源/漏极分别与所述数据线、所述像素电极电连接；
设置于所述薄膜晶体管和所述像素电极之间的透明电极层；
设置于所述源/漏极同一层上的触控线路，所述触控线路通过第一过孔与所述透明电极层电连接。
其中，所述触控线路与所述源/漏极之间相互绝缘。
其中，所述透明电极层被分割成若干个相互绝缘的自电容电极，所述自电容电极通过所述触控线路与所述阵列基板的驱动电路电连接；
所述驱动电路用于为所述自电容电极提供触控信号，以使所述自电容电极作为触控电极；
所述驱动电路用于为所述自电容电极提供公共电压，以使所述自电容电极作为公共电极。
其中，所述驱动电路还与所述数据线、所述栅极线电连接，用于为栅极线提供扫描信号、为数据线提供数据信号。
其中，所述触控线路对应于所述子像素单元内的光阻空白区布设。
其中，所述触控线路对应于蓝色子像素单元内的光阻空白区布设。
其中，所述触控线路对应于白色子像素单元内的光阻空白区布设。
还提供这种显示面板，包括相对设置的彩色滤光基板、阵列基板，以及设置于所述彩色滤光基板、阵列基板之间的液晶层；
所述阵列基板包括：衬底、设置于所述衬底上的多条数据线和栅极线以及由所述数据线、栅极线围成的多个子像素单元；所述子像素单元包括：
像素电极，以及
薄膜晶体管，其包括栅极和源/漏极，所述栅极与所述栅极线电连接，所述源/漏极分别与所述数据线、所述像素电极电连接；
设置于所述薄膜晶体管和所述像素电极之间的透明电极层；
设置于所述源/漏极同一层上的触控线路，所述触控线路通过第一过孔与所述透明电极层电连接。
其中，所述触控线路与所述源/漏极之间相互绝缘。
其中，所述透明电极层被分割成若干个相互绝缘的自电容电极，所述自电容电极通过所述触控线路与所述阵列基板的驱动电路电连接；
所述驱动电路用于为所述自电容电极提供触控信号，以使所述自电容电极作为触控电极；
所述驱动电路用于为所述自电容电极提供公共电压，以使所述自电容电极作为公共电极。
其中，所述驱动电路还与所述数据线、所述栅极线电连接，用于为栅极线提供扫描信号、为数据线提供数据信号。
其中，所述触控线路对应于所述子像素单元内的光阻空白区布设。
有益效果：
本发明提供一种阵列基板的结构设计，免去了M3层和IL层的结构，M3层功能由于源/漏极同层的触控电极所代替，结构得到进一步的精简。也正由于结构的精简，减少了阵列基板制备过程中M3层、IL层这2道光罩的制作，减少工艺制程、节约原料及降低生产成本；在提升产品良率的同时，提高经济效益。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1是现有技术的阵列基板结构示意图；
图2是本发明实施例1的显示面板的切面结构示意图；
图3是本发明实施例1的阵列基板俯视结构示意图；
图4是本发明实施例1阵列基板的透明导电层布设示意图；
图5是本发明实施例1的阵列基板中触控线路布设示意图；
图6是本发明实施例1的阵列基板中触控电路图；
图7是本发明实施例2的阵列基板中触控线路布设示意图；
图8是本发明实施例2的阵列基板中触控电路图；
图9是本发明实施例3的阵列基板中触控线路布设示意图；
图10是本发明实施例3的阵列基板中触控电路图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。
实施例1
结合图2和图3所示，本实施例提供一种显示面板，其包括相对设置的彩色滤光基板20、阵列基板10，以及夹设于所述彩色滤光基板20和阵列基板10中的液晶层30。
其中，彩色滤光基板20包括依次远离所述液晶分子30设置的支撑件21、彩色滤光片22和玻璃衬底23。彩色滤光片上至少设有红色(R)光阻、绿色(G)光阻和蓝色(B)光阻，有些应用RGBW技术的显示器中，还包括有白色(W)光阻。
其中，所述阵列基板10包括：衬底11；设置于所述衬底11上的多条数据线(Data)和栅极线(Gate)16以及由所述数据线、栅极线围成的多个子像素单元10a。
如图2所示，每个所述子像素单元10a中，包括像素电极43、薄膜晶体管10b和设置于所述薄膜晶体管11b和所述像素电极43之间的透明电极层41。对于本发明的触控显示面板，还包括触控线路(TP)40。
薄膜晶体管10b包括栅极16和源/漏极18，所述栅极16与所述栅极线(Gate)电连接，所述源/漏极18分别与所述数据线(Data)、所述像素电极10a电连接；
触控线路40设置于所述源/漏极18同一层上，所述触控线路40通过第一过孔41a与所述透明电极层41电连接。
具体地，本实施例的阵列基板10包括：衬底11，设置于所述衬底11上的若干个遮光金属层12、设置于所述遮光金属层12和所述衬底11上的缓冲层13；设置于所述缓冲层13上的多晶硅层14；设置于所述多晶硅层14和缓冲层13上的栅极绝缘层15；设置于所述栅极绝缘层15上的栅极线16以及设置于所述栅极16、所述栅极绝缘层15上的层间绝缘层17。
所述层间绝缘层17上设有源/漏极18和触控线路40，所述源/漏极18贯穿整个层间绝缘层17、经过所述栅极绝缘层15设置于所述多晶硅层14上。同时，中层间绝缘层17上还设置与所述源/漏极18相互绝缘的触控线路40。在实际制备过程中，源/漏极18和触控线路40的制备材质是相同的，应用的材料例如为金属钼、铝或铜，只是所承担的作用和功能不同。
在所述源/漏极18、所述触控线路40和所述层间绝缘层17设置平坦层19；在所述平坦层19上设置透明电极层41。所述透明电极层41通过第一过孔41a贯穿所述平坦层19与所述触控线路40连接。
参考图4所示，所述透明电极层41被分割成若干个相互绝缘的自电容电极41b，所述自电容电极41b通过所述触控线路40与所述阵列基板10的驱动电路50电连接。
所述驱动电路用于为所述自电容电极提供触控信号，以使所述自电容电极作为触控电极；所述驱动电路用于为所述自电容电极提供公共电压，以使所述自电容电极作为公共电极。因此，所述透明电极层41是在触控阶段、显示阶段分别承担触控电极、公共电极的角色。
在所述像素电极41、所述平坦层19上的钝化层42。在所述钝化层42上设置像素电极43(也可成为第二透明导电层)，所述像素电极43通过第二过孔43a贯穿所述钝化层42、所述平坦层19与所述源/漏极18的漏极连接。像素电极43与所述液晶分子30接触。
本实施例中，阵列基板10的结构中去掉了M3层和IL层，而M3层的功能由触控线路40代替，进一步精简了阵列基板的结构。
结合图3所示，所述触控线路40的布线方式有多种。一般地，为了使彩色滤光片的性能发挥最佳，阵列基板10上元器件或走线布设会对应设置在相邻两个子像素单元之间的、没有布设光阻的区域，即光阻空白区。因此，本实施例的触控线路40、数据线(源/漏极18)均对应布设在R、G、B子像素单元的光阻空白区上。本实施例所获得阵列基板是属于自电容式触摸传感器，其电路图如图4所示。
实施例2
本实施例与实施例1所不同的是，触控线路40和源/漏极18的布设位置有所调整。由于本发明的触控线路40和源/漏极18位于同一层上，触控线路无法与数据线Data重合，形成在狭窄的光阻空白区上容易占据到两侧的子像素内的光阻区域，影响光阻性能或需要降低阵列基板的开口率。因此，在保持开口率不变的前提下，可以将触控线路40只布设在蓝色子像素单元内，如图5所示，尽量布设在蓝色子像素单元的光阻空白区。选择蓝色子像素是由于该光阻在亮度上贡献最小，故此若无法避免被遮蔽局部光阻出光面积，对整个显示面板的显示亮度影响不大。
本实施例所获得阵列基板是属于自电容式触摸传感器，其电路图如图6所示。
实施例3
本实施例是针对使用RGBW技术(彩色滤光基板中还包括白色光阻)的显示面板而言的。与实施例2相比，所不同的是，如图7所示，触控线路40只布设在白色子像素内的光阻空白区内，同样地，即使无法避免容易遮盖部分光阻出光面积，也不会对显示面板的整体品质带来的影响。
本实施例所获得阵列基板是属于自电容式触摸传感器，其电路图如图8所示。
与现有技术相比，本发明节省了一道金属层与一道绝缘层的制作，从而达到减少工艺制程、节约原料的目的，进而实现缩短TFT基板的制程时间以及降低TFT基板的制造成本的效果。本发明的TFT基板，具有内嵌式触控功能，且结构简单，制作成本低。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (10)

1.一种阵列基板，其特征在于，包括：衬底、设置于所述衬底上的多条数据线和栅极线以及由所述数据线、栅极线围成的多个子像素单元；其特征在于，所述子像素单元包括：
像素电极，以及
薄膜晶体管，其包括栅极和源/漏极，所述栅极与所述栅极线电连接，所述源/漏极分别与所述数据线、所述像素电极电连接；
设置于所述薄膜晶体管和所述像素电极之间的透明电极层；
设置于所述源/漏极同一层上的触控线路，所述触控线路通过第一过孔与所述透明电极层电连接。
2.根据权利要求1所述阵列基板，其特征在于，所述触控线路与所述源/漏极之间相互绝缘。
3.根据权利要求1所述阵列基板，其特征在于，所述透明电极层被分割成若干个相互绝缘的自电容电极，所述自电容电极通过所述触控线路与所述阵列基板的驱动电路电连接；
所述驱动电路用于为所述自电容电极提供触控信号，以使所述自电容电极作为触控电极；
所述驱动电路用于为所述自电容电极提供公共电压，以使所述自电容电极作为公共电极。
4.根据权利要求3所述阵列基板，其特征在于，所述驱动电路还与所述数据线、所述栅极线电连接，用于为栅极线提供扫描信号、为数据线提供数据信号。
5.根据权利要求1所述阵列基板，其特征在于，所述触控线路对应于所述子像素单元内的光阻空白区布设。
6.根据权利要求1所述阵列基板，其特征在于，所述触控线路对应于蓝色子像素单元内的光阻空白区布设。
7.根据权利要求1所述阵列基板，其特征在于，所述触控线路对应于白色子像素单元内的光阻空白区布设。
8.一种显示面板，包括相对设置的彩色滤光基板、阵列基板，以及设置于所述彩色滤光基板、阵列基板之间的液晶层；其特征在于，
所述阵列基板包括：衬底、设置于所述衬底上的多条数据线和栅极线以及由所述数据线、栅极线围成的多个子像素单元；所述子像素单元包括：
像素电极，以及
薄膜晶体管，其包括栅极和源/漏极，所述栅极与所述栅极线电连接，所述源/漏极分别与所述数据线、所述像素电极电连接；
设置于所述薄膜晶体管和所述像素电极之间的透明电极层；
设置于所述源/漏极同一层上的触控线路，所述触控线路通过第一过孔与所述透明电极层电连接。
9.根据权利要求8所述显示面板，其特征在于，所述触控线路与所述源/漏极之间相互绝缘。
10.根据权利要求8所述显示面板，其特征在于，所述透明电极层被分割成若干个相互绝缘的自电容电极，所述自电容电极通过所述触控线路与所述阵列基板的驱动电路电连接；
所述驱动电路用于为所述自电容电极提供触控信号，以使所述自电容电极作为触控电极；
所述驱动电路用于为所述自电容电极提供公共电压，以使所述自电容电极作为公共电极。
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