CN105445998A - Ltps显示面板及其制备工艺 - Google Patents

Ltps显示面板及其制备工艺 Download PDF

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CN105445998A
CN105445998A CN201511029054.1A CN201511029054A CN105445998A CN 105445998 A CN105445998 A CN 105445998A CN 201511029054 A CN201511029054 A CN 201511029054A CN 105445998 A CN105445998 A CN 105445998A
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conducting ring
tft substrate
black matrix
colored filter
display panel
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熊彬
谢露露
韩云
邢振周
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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 CN201511029054.1A priority Critical patent/CN105445998A/zh
Priority to PCT/CN2016/072819 priority patent/WO2017113470A1/zh
Priority to US14/914,243 priority patent/US20180040607A1/en
Publication of CN105445998A publication Critical patent/CN105445998A/zh
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Abstract

本发明公开了一种LTPS显示面板及其制备工艺，所述LTPS显示面板包括彩色滤光片、位于彩色滤光片上的黑矩阵、以及位于黑矩阵一侧且与彩色滤光片相对设置的TFT基板，所述黑矩阵外侧的彩色滤光片上设有导电环，所述导电环与黑矩阵之间设有分割槽，所述TFT基板上设有一个或多个接地引脚，所述彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。本发明中面板边缘形成的静电可通过ESD放电路径释放到大地，进而可预防因切割面板形成崩角缺口而造成ESD显示不良，提高了面板的ESD可靠性。

Description

LTPS显示面板及其制备工艺
技术领域
本发明涉及LTPS显示技术领域，特别是涉及一种LTPS显示面板及其制备工艺。
背景技术
随着低温多晶硅(LTPS，LowTemperaturePolySilicon)设备和工艺技术不断改善，越来越多的面板厂商逐渐在低温多晶硅技术领域投入大量的精力和成本。低温多晶硅制造工艺能够使得显示面板具有更高的像素密度(PPI)和更窄的边框，这些都得益于低温多晶硅拥有较大的电子迁移率。
在终端显示市场，尤其是智能手机市场，各家公司都在需找产品差异化或者产品的创新点来借势宣传新款手机的卖点。目前，窄边框甚至“无边框”一直是终端品牌宣传的热点。终端客户的需求使得面板厂商不断的探索边框的极限，然而由于玻璃的特性以及面板的结构原因，使得边框的宽度几乎达到了物理极限。
现有技术中，参图1所示，在面板的四周分布着密集的电路，例如GOA(GateOnArray)单元电路、ESD(ElectricStaticDischarge)保护电路等，这些电路位于面板的最外围。结合图2、图3所示，LTPS显示面板通常包括彩色滤光片(CF)10、位于彩色滤光片中间位置的黑矩阵20、以及与黑矩阵BM(BlackMatrix)20相对的TFT基板30，由于边框越来越窄，使得面板切割时很容易出现如图2所示的微细的裂纹、崩角缺口，这些裂纹的出现使得面板四周会出现尖端，进而使得ESD(ElectricStaticDischarge)更容易积累。由于窄边框的需要，使得面板的切割边缘离黑矩阵BM边缘非常近，切割面板时产生的微细的裂纹、崩角缺口就会很容易与黑矩阵BM连接，使得累计的ESD传导到黑矩阵BM，进而使得黑矩阵BM上带静电；当黑矩阵BM被带上静电时，会干扰原有正常的水平电场，进而造成面板显示不良。
发明内容
为克服现有技术的不足，本发明的目的在于提供一种LTPS显示面板及其制备工艺。
为了实现上述目的，本发明实施例提供的技术方案如下：
一种LTPS显示面板，所述LTPS显示面板包括彩色滤光片、位于彩色滤光片上的黑矩阵、以及位于黑矩阵一侧且与彩色滤光片相对设置的TFT基板，所述黑矩阵外侧的彩色滤光片上设有导电环，所述导电环与黑矩阵之间设有分割槽，所述TFT基板上设有一个或多个接地引脚，所述彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。
作为本发明的进一步改进，所述彩色滤光片上的导电环和TFT基板上的接地引脚通过导电银胶电性连接。
作为本发明的进一步改进，所述导电银胶设于导电环的拐角处，TFT基板上的接地引脚与导电环的拐角处对应设置。
作为本发明的进一步改进，所述导电环与黑矩阵的材质相同。
作为本发明的进一步改进，所述分割槽的宽度为1～100μm。
作为本发明的进一步改进，所述导电环的宽度为100～1000μm。
相应地，一种LTPS显示面板的制备工艺，所述制备工艺包括：
提供一彩色滤光片，在彩色滤光片的一侧形成黑矩阵以及位于黑矩阵外侧的导电环，黑矩阵和导电环通过分割槽分离设置；
提供一TFT基板，在TFT基板上设置一个或多个接地引脚；
将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。
作为本发明的进一步改进，所述TFT基板上的接地引脚与导电环的拐角处对应设置。
作为本发明的进一步改进，将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接具体为：
在彩色滤光片上的导电环和TFT基板上的接地引脚之间进行点银胶，电性连接导电环和接地引脚。
本发明通过在彩色滤光片上设置黑矩阵和导电环，并在黑矩阵和导电环之间形成分割槽，导电环与TFT基板上的接地引脚电性连接，形成ESD放电路径，当面板崩角缺口处有ESD静电时，静电可通过ESD放电路径释放到大地，进而可预防因切割面板形成崩角缺口而造成ESD显示不良，提高了面板的ESD可靠性。
附图说明
图1为现有技术中LTPS显示面板的框架示意图。
图2为现有技术中LTPS显示面板的平面结构示意图。
图3为现有技术中LTPS显示面板的侧面结构示意图。
图4为本发明一具体实施方式中LTPS显示面板的平面结构示意图。
图5为本发明一具体实施方式中LTPS显示面板的侧面结构示意图。
图6为本发明一具体实施方式中LTPS显示面板放电的平面示意图。
图7为本发明一具体实施方式中LTPS显示面板放电的侧面示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，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，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
参图4、图5所示为本发明一具体实施方式中的LTPS显示面板，该LTPS显示面板包括彩色滤光片10(CF)、位于彩色滤光片上的黑矩阵20(BM)、以及位于黑矩阵一侧且与彩色滤光片相对设置的TFT基板30，彩色滤光片和TFT基板之间还包括液晶层(未图示)。
其中，黑矩阵20外侧的彩色滤光片上设有导电环40，导电环40与黑矩阵20之间设有分割槽50，TFT基板30上设有一个或多个接地引脚31，彩色滤光片上的导电环40和TFT基板上的接地引脚31电性连接，进而导电环40通过接地引脚形成接地导电环(GNDloop)，最终以形成ESD放电路径。
在本实施方式中，彩色滤光片上的导电环40和TFT基板上的接地引脚31通过导电银胶60电性连接，如在图4所示的LTPS显示面板中，导电环40呈矩形设置，在导电环40的各个拐角41处分别进行点银胶，通过导电银胶60电性连接拐角41处的导电环和TFT基板上的接地引脚31，通过导电银胶60将导电环40与大地GND接在一起。
如图6、图7所示，当崩角缺口处有静电放电电荷ESD时，静电放电电荷ESD可通过四个拐角处的银胶点流到TFT基板的接地引脚上，再通过该接地引脚释放到大地GND，进而避免了因切割面板产生的崩角缺口而造成ESD无法释放、面板显示不良的问题。
进一步地，分割槽50位于导电环40和黑矩阵20之间，可进一步阻绝因面板切割时造成的崩角缺口累计的ESD传导至彩色滤光片的黑矩阵上，使得黑矩阵表面不会形成电场，从而避免影响TFT基板和彩色滤光片之间原本的平行电场、导致液晶分子的偏转角度与实际设计不一致、从而影响最终显示的问题。
本实施方式中导电环40与黑矩阵20的材质相同，导电环40采用原有低阻黑矩阵BM形成，分割槽50的宽度为1～100μm，导电环40的宽度为100～1000μm。优选地，在本发明的一具体实施例中，分割槽50的宽度为15μm左右，而导电环40的宽度为300μm左右。
应当理解的是，本实施方式中以矩形的导电环为例进行说明，导电银胶设于矩形导电环的拐角处，在其他实施方式中导电环也可以为其他形状的闭环形，导电银胶可以设置于全部或部分导电环的拐角处，也可以设于导电环的非拐角处，此处不再一一举例进行说明。
相应地，上述实施方式中LTPS显示面板的制备工艺，包括：
提供一彩色滤光片，在彩色滤光片的一侧形成黑矩阵以及位于黑矩阵外侧的导电环，黑矩阵和导电环通过分割槽分离设置；
提供一TFT基板，在TFT基板上设置一个或多个接地引脚；
将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。
其中，将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接具体为：
在彩色滤光片上的导电环和TFT基板上的接地引脚之间进行点银胶，电性连接导电环和接地引脚。
由以上技术方案可以看出，本发明通过在彩色滤光片上设置黑矩阵和导电环，并在黑矩阵和导电环之间形成分割槽，导电环与TFT基板上的接地引脚电性连接，形成ESD放电路径，当面板崩角缺口处有ESD静电时，静电可通过ESD放电路径释放到大地，进而可预防因切割面板形成崩角缺口而造成ESD显示不良，提高了面板的ESD可靠性。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (9)

1.一种LTPS显示面板，所述LTPS显示面板包括彩色滤光片、位于彩色滤光片上的黑矩阵、以及位于黑矩阵一侧且与彩色滤光片相对设置的TFT基板，其特征在于，所述黑矩阵外侧的彩色滤光片上设有导电环，所述导电环与黑矩阵之间设有分割槽，所述TFT基板上设有一个或多个接地引脚，所述彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。
2.根据权利要求1所述的LTPS显示面板，其特征在于，所述彩色滤光片上的导电环和TFT基板上的接地引脚通过导电银胶电性连接。
3.根据权利要求2所述的LTPS显示面板，其特征在于，所述导电银胶设于导电环的拐角处，TFT基板上的接地引脚与导电环的拐角处对应设置。
4.根据权利要求1所述的LTPS显示面板，其特征在于，所述导电环与黑矩阵的材质相同。
5.根据权利要求1所述的LTPS显示面板，其特征在于，所述分割槽的宽度为1～100μm。
6.根据权利要求1所述的LTPS显示面板，其特征在于，所述导电环的宽度为100～1000μm。
7.一种LTPS显示面板的制备工艺，其特征在于，所述制备工艺包括：
提供一彩色滤光片，在彩色滤光片的一侧形成黑矩阵以及位于黑矩阵外侧的导电环，黑矩阵和导电环通过分割槽分离设置；
提供一TFT基板，在TFT基板上设置一个或多个接地引脚；
将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接，以形成ESD放电路径。
8.根据权利要求7所述的制备工艺，其特征在于，所述TFT基板上的接地引脚与导电环的拐角处对应设置。
9.根据权利要求7或8所述的制备工艺，其特征在于，将彩色滤光片上的导电环和TFT基板上的接地引脚电性连接具体为：
在彩色滤光片上的导电环和TFT基板上的接地引脚之间进行点银胶，电性连接导电环和接地引脚。
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