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WO2017049674A1 - 一种内嵌触摸液晶面板及其阵列基板 - Google Patents

一种内嵌触摸液晶面板及其阵列基板 Download PDF

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Publication number
WO2017049674A1
WO2017049674A1 PCT/CN2015/091770 CN2015091770W WO2017049674A1 WO 2017049674 A1 WO2017049674 A1 WO 2017049674A1 CN 2015091770 W CN2015091770 W CN 2015091770W WO 2017049674 A1 WO2017049674 A1 WO 2017049674A1
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WO
WIPO (PCT)
Prior art keywords
electrode
touch
electrodes
floating
driving electrode
Prior art date
Application number
PCT/CN2015/091770
Other languages
English (en)
French (fr)
Inventor
谢剑星
黄耀立
黄俊宏
Original Assignee
深圳市华星光电技术有限公司
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司, 武汉华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/891,371 priority Critical patent/US9841834B2/en
Priority to GB1806682.9A priority patent/GB2562899B/en
Priority to KR1020187011760A priority patent/KR102015937B1/ko
Publication of WO2017049674A1 publication Critical patent/WO2017049674A1/zh

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Definitions

  • the present invention relates to the field of touch technologies, and in particular, to an embedded touch liquid crystal panel and an array substrate thereof.
  • touch screen As an input medium, the touch screen is the simplest and most convenient way of human-computer interaction, so the touch screen is increasingly applied to various electronic products. Based on different working principles and media for transmitting information, touch screen products can be divided into four types: infrared touch screen, capacitive touch screen, resistive touch screen and surface acoustic wave touch screen; among them, capacitive touch screen has long life, high light transmittance and can support many Point touch and other advantages have become the mainstream touch screen technology.
  • the capacitive touch display device includes a capacitive touch panel, and the capacitive touch panel includes a surface capacitive type and a projected capacitive type, wherein the projected capacitive type can be further divided into a self-capacitance type and a mutual capacitance type.
  • the mutual capacitance method is to form a touch driving electrode and a touch sensing electrode on the surface of the glass, and a coupling capacitor is formed at a place where the two sets of electrodes intersect, that is, the two sets of electrodes respectively constitute two poles of the coupling capacitor.
  • the touch driving electrode Tx and the touch sensing electrode Rx in the touch structure are usually directly disposed on the array substrate or the filter substrate.
  • 1 is a schematic structural view of a conventional mutual-capacity embedded touch screen.
  • the touch driving electrode Tx and the touch sensing electrode Rx are respectively made of two layers of ITO conductive material. It is placed on two parallel faces that are not coplanar and electrically insulated from each other. It is called double-layer ITO mutual capacitive touch screen, that is, Doubie Layer ITO touch screen, referred to as DITO.
  • the plurality of elongated touch driving electrodes Tx are arranged in the Y direction, and the plurality of elongated touch sensing electrodes Rx are arranged in the X direction (perpendicular to the Y direction).
  • the connection trace 2 of the touch sensing electrode Rx can be connected to the touch control chip 1 from the lower side of the display area AA; and the connection trace 3 of the touch driving electrode Tx needs to be disposed on the left and right sides of the display area AA.
  • the Y direction is extended and connected to the touch control chip 1. Therefore, the connection trace area 4 exists on the left and right sides of the display area AA.
  • connection trace area 4 additionally occupies a part of the frame, which is disadvantageous for the narrow frame of the product.
  • the present invention provides an in-line touch liquid crystal panel and an array substrate thereof.
  • the width of the border of the liquid crystal panel is reduced, which is beneficial to realize the product.
  • the requirement for a narrow border is provided.
  • An array substrate with a touch liquid crystal panel comprising a glass substrate and a thin film transistor, a common electrode layer and a pixel electrode sequentially formed on the glass substrate, wherein the common electrode layer and the thin film transistor are disposed between a first insulating layer, a passivation layer is disposed between the common electrode layer and the pixel electrode, and the pixel electrode is electrically connected to the thin film transistor through a first via hole; wherein the common electrode layer is divided a plurality of mutually insulative strip-shaped touch driving electrodes, wherein the touch driving electrodes extend in a first direction; and each of the touch driving electrodes is disposed in a first direction along the plurality of touch driving electrodes An insulating suspension electrode; a second insulating layer and a metal wiring layer are sequentially disposed between the common electrode layer and the passivation layer; wherein the second insulating layer corresponds to each touch driving electrode respectively a second via and a plurality of third vias are disposed, the plurality of third vias corresponding to the plurality
  • the plurality of driving electrode traces straddle all the touch driving electrodes in the second direction; each of the driving electrode traces on the projection area of the plurality of touch driving electrodes, except the driving electrode
  • the touch drive electrodes are electrically connected to each other, and the remaining touch drive electrodes form a first empty load area by hollowing out in the projection area.
  • the driving electrode traces, the floating electrode traces, and the touch sensing electrodes in the metal wiring layer are all disposed on the non-display area of the array substrate.
  • the width of the first empty area is not less than the width of the driving electrode trace.
  • the second via and/or the third via comprise a plurality of vias.
  • Each of the driving electrode traces includes a plurality of electrically connected metal wires
  • each of the floating electrode traces includes a plurality of electrically connected metal wires
  • the position of the plurality of driving electrode traces connected to the touch driving electrode is farther away from the driving electrode trace of the signal input end, and includes more metal wires.
  • the second insulating layer is provided with n third via holes corresponding to each floating electrode, and n floating electrode traces are arranged above a column of floating electrodes arranged in the second direction, where n is an integer greater than 1. .
  • an in-cell touch liquid crystal panel including a thin film transistor array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal layer between the thin film transistor array substrate and the color filter substrate, wherein
  • the thin film transistor array substrate is an array substrate as described above.
  • the embedded touch liquid crystal panel and the array substrate thereof provided by the embodiments of the present invention improve the structure of the touch screen disposed in the array substrate, so that the connection lines of the touch driving electrodes no longer occupy the panel.
  • the frame reduces the width of the border of the liquid crystal panel, which is beneficial to the requirements of the narrow frame of the product.
  • FIG. 1 is a schematic structural view of a conventional mutual-capacity embedded touch screen.
  • FIG. 2 is a schematic structural diagram of an array substrate embedded with a touch liquid crystal panel according to an embodiment of the present invention.
  • FIG 3 is a schematic structural view of a common electrode layer in an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a second insulating layer in an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a metal wiring layer in an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a metal wiring layer in another embodiment of the present invention.
  • Figure 7 is a schematic cross-sectional view of the first no-load zone along line x1 in Figure 5.
  • FIG. 8 is a schematic structural view of a driving electrode trace and a floating electrode trace in an embodiment of the present invention.
  • Figure 9 is an enlarged schematic view showing portions A1 and A2 of Figure 5 in the embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an in-cell touch liquid crystal panel according to an embodiment of the present invention.
  • the embodiment first provides an array substrate with a touch liquid crystal panel embedded therein, and the touch structure is embedded in the array substrate.
  • the array substrate 100 includes a glass substrate 10, and a thin film transistor 20, a common electrode layer 30, and a pixel electrode 40 which are sequentially formed on the glass substrate 10.
  • a first insulating layer 50 is disposed between the common electrode layer 30 and the thin film transistor 20, and a passivation layer 60 is disposed between the common electrode layer 30 and the pixel electrode 40.
  • the pixel electrode 40 is disposed between the common electrode layer 30 and the pixel electrode 40.
  • the thin film transistor 20 is electrically connected through the first via hole 70.
  • a second insulating layer 80 and a metal wiring layer 90 are sequentially disposed between the common electrode layer 30 and the passivation layer 60.
  • the thin film transistor 20 includes a gate 21, a source 22, a drain 23, and an active layer 24.
  • the active layer 24 is located on the glass substrate 10
  • the gate 21 is located on the structural layer of the active layer 24, and an insulating layer is disposed between the gate 21 and the active layer 24
  • the electrode 22 and the drain 23 are located on the structural layer of the gate 21 and an insulating layer is disposed between the gate 21 and the source 22 and the drain 23
  • the pixel electrode 40 is connected to the drain 23 through the first via 70 ( In other embodiments, it may also be connected to the source 22). Only one of the thin film transistors 20 and one of the pixel electrodes 40 is exemplarily shown in FIG. 2.
  • the array substrate 100 should include a plurality of thin film transistors 20 and pixel electrodes 40 arranged in an array, in the array substrate 100. It should further include a plurality of data lines and a plurality of scan lines, wherein the plurality of data lines and the plurality of scan lines cross each other to define a plurality of pixel units, each of the pixel units including at least one thin film transistor 20 and one of FIG. The pixel electrode 40.
  • the common electrode layer 30 is divided into a plurality of strip-shaped touch driving electrodes 31 that are insulated from each other, and the touch driving electrodes 31 are along the first direction ( The X direction in FIG. 3 extends, and the plurality of touch driving electrodes 31 are arranged in the second direction (as in the Y direction in FIG. 3).
  • a plurality of floating electrodes 32 insulated from the touch driving electrodes 31 are disposed in each of the touch driving electrodes 31 in the first direction, thereby, in the region of the entire common electrode layer 30, a plurality of floating electrodes 32 is arranged in an array.
  • the first direction and the second direction are perpendicular to each other.
  • FIGS. 4 and 5 (the dotted line portion in FIGS. 4 and 5 is the outline of the common electrode layer 30 under the second insulating layer 80).
  • a second via 81 and a plurality of third vias 82 are respectively disposed in the second insulating layer 80 corresponding to each of the touch driving electrodes 31 , and the plurality of third vias 82 .
  • the metal wiring layer 90 includes a plurality of driving electrode traces 91 insulated from each other in the second direction, a plurality of floating electrode traces 92, and a plurality of touch sensing electrodes 93.
  • the plurality of driving electrode traces 91 are respectively connected to the plurality of touch driving electrodes 31, and each driving electrode trace 91 is electrically connected to one of the touch driving electrodes through the second via 81. 31.
  • Each of the floating electrode traces 92 is electrically connected to the plurality of floating electrodes 32 arranged in the second direction through the third via 82.
  • the second via 81 and the third via 82 may include a plurality of vias. For example, taking the second via 81 as an example, as shown in FIG. 4, each of the second vias 81 includes three through holes 81a.
  • the external control chip when the display timing is displayed, the external control chip supplies a common voltage signal to the touch driving electrode 31 through the driving electrode trace 91, and supplies a common voltage signal to the floating electrode 32 through the floating electrode trace 92.
  • the common sense voltage signal may be supplied to the touch sensing electrode 93 or no signal may be provided (more preferably, the common voltage signal is supplied to the touch sensing electrode 93 at the time of display timing).
  • the external control chip provides a touch driving signal to the touch driving electrode 31 through the driving electrode trace 91, and the floating electrode 32 does not provide any signal.
  • the touch sensing electrode 93 is used to receive the touch sensing. signal.
  • the array substrate with the touch liquid crystal panel embedded in the above structure improves the structure of the touch screen disposed in the array substrate, so that the connection trace of the touch driving electrode no longer occupies the frame of the panel, and the width of the border of the liquid crystal panel is reduced. Conducive to the realization of the product's narrow bezel requirements.
  • the common electrode layer 30 is divided into three touch driving electrodes 31 , and three floating electrodes 32 are disposed in each touch driving electrode 31 .
  • These specific numbers are merely illustrative and are not to be construed as limiting the invention.
  • the number of the touch driving electrodes 31 and the floating electrodes 32 can be selected to be divided into more or less according to the area of the liquid crystal panel in actual situations.
  • the number of driving electrode traces 91 should be the same as the number of touch driving electrodes 31, each drive The moving electrode traces 91 are electrically connected to one of the touch driving electrodes 31 in one-to-one correspondence.
  • the number of floating electrode traces 92 is determined mainly by the number of floating electrodes 32. As shown in FIG. 5, at least one column of floating electrodes 32 in the second direction is provided with a floating electrode trace 92.
  • the second insulating layer 80 is provided with n third via holes 82 corresponding to each of the floating electrodes 32, and a column of floating electrodes 32 arranged along the second direction. N floating electrode traces are provided connected to the column of floating electrodes 32, n being an integer greater than one.
  • the second insulating layer 80 is provided with two third via holes 82 corresponding to each of the floating electrodes 32, and a column arranged in the second direction (in the Y direction in FIG. 6). Two floating electrode traces 92 are disposed above the floating electrode 32 to connect to the column of floating electrodes 32.
  • the number of touch sensing electrodes 93 is the largest.
  • the metal trace layer 90 should cover the entire pixel unit array in the array substrate 100.
  • the periphery of each pixel unit corresponds to the liquid crystal panel for shading.
  • the black matrix, the positions of the various traces in the metal trace layer 90 are all positive for the black matrix, or are disposed on the non-display area of each column of pixels of the array substrate 100.
  • the Y direction in FIG. 5 is the column direction of the pixel unit array, and each of the two rows of pixel units may be provided with various traces in the metal trace layer 90.
  • the drive electrode trace 91 and The position of the floating electrode trace 92 can be set as the touch sensing electrode 93. And the most preferable solution is that, except for the position where the driving electrode trace 91 and the floating electrode trace 92 are to be disposed, the touch sensing electrodes 93 should be disposed at other positions.
  • the lengths of the plurality of driving electrode traces 91 may be set to be unequal.
  • the setting signal is input from the upper end of each of the traces starting from the upper left in FIG. 5, and the three touch driving electrodes 31 are first and second from the top to the bottom.
  • the three touch driving electrodes 31 and the three driving electrode traces 91 are the first, second, and third driving electrode traces 91 from left to right.
  • the first driving electrode trace 91 After the first driving electrode trace 91 is connected to the first touch driving electrode 31, it can no longer extend downward across the second and third touch driving electrodes 31; the second driving electrode trace 91 spans the first The touch driving electrodes 31 are connected to the second touch driving electrode 31, and then may not extend further downward across the third touch driving electrode 31; the third driving electrode trace 91 spans the first The two touch driving electrodes 31 are connected to the third touch driving electrode 31.
  • the lengths of the plurality of driving electrode traces 91 are unevenly distributed, uneven light transmission in each region may be caused, which may affect the final display effect.
  • a plurality of driving electrode traces 91 straddle all of the touch driving electrodes 91 in the second direction, that is, the first driving electrode trace 91 is connected to First touch
  • the driving electrode 31 continues to extend downwardly across the second and third touch driving electrodes 31; the second driving electrode trace 91 is connected to the second touch driving electrode 31 across the first touch driving electrode 31.
  • the third driving electrode 31 is extended downwardly.
  • the third driving electrode 91 is connected to the third touch driving electrode 31 across the first and second touch driving electrodes 31.
  • FIG. 7 is a cross-sectional view taken along line x1 in FIG. 5 , and each driving electrode trace 91 is on the plurality of touch driving electrodes 31 .
  • the remaining touch driving electrodes 31 form a first empty area 33 by hollowing out in the projection area.
  • the first driving electrode trace 91 is connected to the first touch driving electrode 31, and the second and third touch driving electrodes 31 correspond to the first driving electrode.
  • the projected area of the trace 91 forms a first empty area 33 by hollowing out.
  • the influence of the driving electrode traces 91 on the touch driving electrodes 31 not connected thereto can be reduced by providing the first no-load region 33. Also, as shown in FIG. 7, when the width d1 of the first no-load region 33 is not smaller than the width d2 of the driving electrode trace 91, a better effect can be obtained.
  • each of the driving electrode traces 91 includes a plurality of electrically connected metal lines 91a
  • each of the floating electrode traces 92 includes a plurality of electrically connected metal lines 92a.
  • the distance of the signal transmission in the different driving electrode traces 91 is different.
  • the position of the connection with the touch driving driving electrode 31 is farther away from the driving electrode trace 91 of the signal input end, and the number thereof is included. A large number of metal wires 91a.
  • the second driving electrode trace 91 may be set to include four (or more) metal lines 91a.
  • the third driving electrode trace 91 may include more metal lines 91a than the second driving electrode traces 91.
  • the embodiment further provides an in-cell touch liquid crystal panel.
  • the in-line touch liquid crystal panel includes the thin film transistor array substrate 100 provided in the foregoing embodiment, and further includes a color filter disposed opposite to the array substrate 100.
  • the optical substrate 200 and the liquid crystal layer 300 disposed between the array substrate 100 and the color filter substrate 200.
  • the embedded touch liquid crystal panel and the array substrate thereof provided by the embodiments of the present invention are
  • the structure of the touch screen disposed in the array substrate is improved, so that the connection trace of the touch driving electrode no longer occupies the frame of the panel, and the width of the border of the liquid crystal panel is reduced, which is beneficial to realize the requirement of the narrow frame of the product.

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Abstract

一种内嵌触摸液晶面板及其阵列基板(100),其中的阵列基板(100)包括玻璃基板(10)以及依次形成于玻璃基板(10)上的薄膜晶体管(20)、公共电极层(30)以及像素电极(40);其中,所述公共电极层(30)被划分为多个相互绝缘的长条状的触控驱动电极(31),每一触控驱动电极(31)中设置有多个悬浮电极(32);所述公共电极层(30)上还依次设置有第二绝缘层(80)和金属走线层(90);其中,所述金属走线层(90)中包括多个驱动电极走线(91)、多个悬浮电极走线(92)以及多个触控感应电极(93);每一驱动电极走线(91)通过绝缘层中的过孔电性连接其中的一个触控驱动电极(31),每一悬浮电极走线(92)连接到沿第二方向上排列的多个悬浮电极(32)。

Description

一种内嵌触摸液晶面板及其阵列基板 技术领域
本发明涉及触控技术领域,尤其涉及一种内嵌触摸液晶面板及其阵列基板。
背景技术
触摸显示屏作为一种输入媒介,是目前最简单、方便的一种人机交互方式,因此触摸显示屏越来越多地应用到各种电子产品中。基于不同的工作原理以及传输信息的介质,触摸屏产品可以分为四种:红外线触摸屏、电容式触摸屏、电阻触摸屏和表面声波触摸屏;其中电容式触摸屏由于具有寿命长、透光率高、可以支持多点触控等优点成为目前主流的触摸屏技术。
电容式触摸显示装置中包括电容式触控面板,电容式触控面板包括表面电容式和投射电容式,其中投射电容式又可以分为自电容式和互电容式。其中,互电容方式是在玻璃表面制作触控驱动电极与触控感应电极,两组电极交叉的地方将会形成耦合电容,即这两组电极分别构成了耦合电容的两极。当手指触摸到电容屏时,影响了触摸点附近两个电极之间的耦合,从而改变了这两个电极之间的耦合电容的大小。根据电容的变化量数据,可以计算出每一个触摸点的坐标。
对于互电容式内嵌(in-cell)触摸屏,通常是将触摸结构中的触控驱动电极Tx与触控感应电极Rx直接设置在阵列基板或滤光基板上。图1是现有的一种互容式内嵌触摸屏的结构示意图,如图1所示,在显示区域AA内,触控驱动电极Tx与触控感应电极Rx分别用两层ITO导电材料层制作,设置在不共面的两平行面上且相互电性绝缘,称为双层ITO互容式触摸屏,即Doubie Layer ITO触摸屏,简称DITO。多个长条状的触控驱动电极Tx沿Y方向排列,多个长条状的触控感应电极Rx沿X方向(与Y方向垂直)排列。触控感应电极Rx的连接走线2可以从显示区域AA的下侧连接到触摸控制芯片1;而触控驱动电极Tx的连接走线3则需要设置在显示区域AA的左右两侧引出,沿Y方向延伸后连接到触摸控制芯片1,因此,显示区域AA的左右两侧存在着连接走线区域4。
在竞争日益激烈的显示器市场,差异化设计成为各厂家提升自身产品卖点的重要研究方向之一,在现有的产品中,常见的有薄型化或窄边框设计,该设计可获得较为美观的外形,以吸引消费者的关注。如上结构的互容式内嵌触摸屏结构中,连接走线区域4额外占据了部分边框,不利于产品窄边框化。
发明内容
鉴于现有技术存在的不足,本发明提供了一种内嵌触摸液晶面板及其阵列基板,通过对设置于阵列基板中的触摸屏结构进行改进,减小了液晶面板边框的宽度,有利于实现产品窄边框的要求。
为了实现上述目的,本发明采用了如下的技术方案:
一种内嵌触摸液晶面板的阵列基板,包括玻璃基板以及依次形成于所述玻璃基板上的薄膜晶体管、公共电极层以及像素电极,其中,所述公共电极层与所述薄膜晶体管之间设置有第一绝缘层,所述公共电极层与所述像素电极之间设置有钝化层,所述像素电极通过第一过孔与所述薄膜晶体管电性连接;其中,所述公共电极层被划分为多个相互绝缘的长条状的触控驱动电极,所述触控驱动电极沿第一方向延伸;每一触控驱动电极中沿第一方向上设置有多个与该触控驱动电极相互绝缘的悬浮电极;所述公共电极层与所述钝化层之间还依次设置有第二绝缘层和金属走线层;其中,所述第二绝缘层中对应于每一触控驱动电极分别设置有一个第二过孔和多个第三过孔,所述多个第三过孔对应于每一触控驱动电极中多个悬浮电极;所述金属走线层中包括沿第二方向延伸的相互绝缘的多个驱动电极走线、多个悬浮电极走线以及多个触控感应电极;所述多个驱动电极走线一一对应于所述多个触控驱动电极,每一驱动电极走线通过所述第二过孔电性连接其中的一个触控驱动电极,每一悬浮电极走线通过所述第三过孔电性连接到沿第二方向上排列的多个悬浮电极;其中,第一方向与第二方向相互垂直。
其中,所述多个驱动电极走线均在第二方向上横跨所有的触控驱动电极;每一驱动电极走线在所述多个触控驱动电极上的投影区域,除了与该驱动电极走线电性连接的触控驱动电极,其余触控驱动电极在所述投影区域通过挖空形成第一空载区。
其中,所述金属走线层中的驱动电极走线、悬浮电极走线以及触控感应电极均设置于阵列基板的非显示区域上。
其中,所述第一空载区的宽度不小于所述驱动电极走线的宽度。
其中,所述第二过孔和/或所述第三过孔包括多个通孔。
其中,每一驱动电极走线包括多条电性连通金属线,每一悬浮电极走线包括多条电性连通金属线。
其中,所述多个驱动电极走线中,与触控驱动电极连接的位置越远离信号输入端的驱动电极走线,其包括数量越多的金属线。
其中,所述第二绝缘层中对应于每一悬浮电极设置有n个第三过孔,沿第二方向上排列的一列悬浮电极上方设置有n个悬浮电极走线,n为大于1的整数。
本发明的另一方面是提供一种内嵌触摸液晶面板,其包括相对设置的薄膜晶体管阵列基板和彩色滤光基板,还包括位于薄膜晶体管阵列基板和彩色滤光基板之间的液晶层,其中,所述薄膜晶体管阵列基板为如上所述的阵列基板。
相比于现有技术,本发明实施例提供的内嵌触摸液晶面板及其阵列基板,通过对设置于阵列基板中的触摸屏结构进行改进,使得触控驱动电极的连接走线不再占据面板的边框,减小了液晶面板边框的宽度,有利于实现产品窄边框的要求。
附图说明
图1是现有的一种互容式内嵌触摸屏的结构示意图。
图2是本发明实施例提供的内嵌触摸液晶面板的阵列基板的结构示意图。
图3是本发明实施例中的公共电极层的结构示意图。
图4是本发明实施例中的第二绝缘层的结构示意图。
图5是本发明实施例中的金属走线层的结构示意图。
图6是本发明另一实施例中的金属走线层的结构示意图。
图7是如图5中沿x1线在第一空载区的剖面示意图。
图8是本发明实施例中的驱动电极走线和悬浮电极走线的结构示意图。
图9是本发明实施例中的如图5中的A1和A2部分的放大示意图。
图10是本发明实施例提供的内嵌触摸液晶面板的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面结合附图对本发明的具体实施方式进行详细说明。这些优选实施方式的示例在附图中进行了例示。附图中所示和根据附图描述的本发明的实施方式仅仅是示例性的,并且本发明并不限于这些实施方式。
在此,还需要说明的是,为了避免因不必要的细节而模糊了本发明,在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤,而省略了与本发明关系不大的其他细节。
参阅图2-图5,本实施例首先提供了一种内嵌触摸液晶面板的阵列基板,将触摸结构内嵌于阵列基板中。如图1所示,该阵列基板100包括玻璃基板10以及依次形成于所述玻璃基板10上的薄膜晶体管20、公共电极层30以及像素电极40。其中,所述公共电极层30与所述薄膜晶体管20之间设置有第一绝缘层50,所述公共电极层30与所述像素电极40之间设置有钝化层60,所述像素电极40通过第一过孔70与所述薄膜晶体管20电性连接。进一步地,所述公共电极层30与所述钝化层60之间还依次设置有第二绝缘层80和金属走线层90。
其中,所述薄膜晶体管20包括栅极21、源极22、漏极23以及有源层24。本实施例中,如图2所示,有源层24位于玻璃基板10上,栅极21位于有源层24的结构层上并且栅极21与有源层24之间设置有绝缘层;源极22和漏极23位于栅极21的结构层上并且栅极21与源极22和漏极23之间设置有绝缘层;所述像素电极40通过第一过孔70与漏极23连接(在另外的实施例中也可以是与源极22连接)。图2中仅示例性示出了其中的一个薄膜晶体管20和一个像素电极40,可以理解的是,阵列基板100中应当包含有多个阵列设置的薄膜晶体管20以及像素电极40,阵列基板100中应当还包含有多条数据线和多条扫描线,多条数据线和多条扫描线相互交叉限定了多个像素单元,每一像素单元至少包含了如图2中的一个薄膜晶体管20和一个像素电极40。
具体地,本实施例中,如图3所示,所述公共电极层30被划分为多个相互绝缘的长条状的触控驱动电极31,所述触控驱动电极31沿第一方向(如图3中的X方向)延伸,并且多个触控驱动电极31沿第二方向排列(如图3中的Y方向)。每一触控驱动电极31中沿第一方向上设置有多个与该触控驱动电极31相互绝缘的悬浮电极32,由此,在整个公共电极层30的区域内,多个悬浮电极 32呈阵列排布。其中,第一方向与第二方向是相互垂直的。
具体地,本实施例中,参阅图4和图5,(图4和图5中的虚线部分为位于第二绝缘层80下方的公共电极层30的轮廓)。如图4所示,所述第二绝缘层80中对应于每一触控驱动电极31分别设置有一个第二过孔81和多个第三过孔82,所述多个第三过孔82对应于每一触控驱动电极31中多个悬浮电极32。所述金属走线层90中包括沿第二方向延伸的相互绝缘的多个驱动电极走线91、多个悬浮电极走线92以及多个触控感应电极93。其中,所述多个驱动电极走线91一一对应于所述多个触控驱动电极31,每一驱动电极走线91通过所述第二过孔81电性连接其中的一个触控驱动电极31,每一悬浮电极走线92通过所述第三过孔82电性连接到沿第二方向上排列的多个悬浮电极32。需要说明的是,为了保证走线与电极之间连接的电性特性,所述第二过孔81和所述第三过孔82可以包括多个通孔。例如,以第二过孔81为例,如图4所示,每一第二过孔81包括3个通孔81a。
以上结构的阵列基板100中,在显示时序时,外部的控制芯片通过驱动电极走线91向触控驱动电极31提供公共电压信号,通过悬浮电极走线92向悬浮电极32提供公共电压信号,此时可以向触控感应电极93提供公共电压信号或者是不提供任何信号(比较优选的是在显示时序时向触控感应电极93提供公共电压信号)。在触控时序时,外部的控制芯片通过驱动电极走线91向触控驱动电极31提供触控驱动信号,悬浮电极32则不提供任何信号,此时触控感应电极93用于接收触控感应信号。
如上结构的内嵌触摸液晶面板的阵列基板,通过对设置于阵列基板中的触摸屏结构进行改进,使得触控驱动电极的连接走线不再占据面板的边框,减小了液晶面板边框的宽度,有利于实现产品窄边框的要求。
需要说明的是,图3-图5中仅示例性示出了将公共电极层30被划分为3个触控驱动电极31,每一触控驱动电极31中设置有3个悬浮电极32。这些具体的数量仅仅是作为例子进行说明,不应理解为对本发明的具体限定。触控驱动电极31和悬浮电极32的数量可以根据实际情况中液晶面板的面积来选择划分为更多或更少的数量。
对于金属走线层90中各种走线的数量:
驱动电极走线91的数量应当是与触控驱动电极31的数量一致的,每一驱 动电极走线91一一对应地电性连接其中的一个触控驱动电极31。
悬浮电极走线92的数量主要根据悬浮电极32的数量来确定,如图5所示的,至少是沿第二方向上的一列悬浮电极32配置有一个悬浮电极走线92。当然,在另外的实施例中也可以是这样:所述第二绝缘层80中对应于每一悬浮电极32设置有n个第三过孔82,沿第二方向上排列的一列悬浮电极32上方设置有n个悬浮电极走线连接到该列悬浮电极32,n为大于1的整数。作为具体的例子,如图6所示,第二绝缘层80中对应于每一悬浮电极32设置有2个第三过孔82,沿第二方向(如图6中Y方向)上排列的一列悬浮电极32上方设置有2个悬浮电极走线92连接到该列悬浮电极32。
触控感应电极93的数量是最多的。具体地,参阅图5,金属走线层90应当是覆盖了阵列基板100中整个像素单元阵列,在液晶面板的像素单元阵列中,每一像素单元的周围都对应于液晶面板中用于遮光的黑色矩阵,金属走线层90中的各种走线的位置都是正对于黑色矩阵的位置,或者说是设置于阵列基板100的每一列像素的非显示区域上。以图5中的Y方向为像素单元阵列的列方向,则每两列像素单元之间都可以设置有金属走线层90中的各种走线,因此,除去需要设置驱动电极走线91和悬浮电极走线92的位置之外,其余的位置都可以设置为触控感应电极93。并且最为优选的方案是,除去需要设置驱动电极走线91和悬浮电极走线92的位置之外,其余的位置应当都设置有触控感应电极93。
对于驱动电极走线91的长度,由于每一驱动电极走线91一一对应地电性连接其中的一个触控驱动电极31,多个驱动电极走线91长度可以设置为不相等。例如以图5所示的结构为例,以图5中的左上方为起点,设定信号从各个走线的上端输入,3个触控驱动电极31从上往下依次为第1、2、3个触控驱动电极31,3个驱动电极走线91从左往右依次为第1、2、3个驱动电极走线91。第1个驱动电极走线91连接到第1个触控驱动电极31之后可以不再往下延伸横跨第2、3个触控驱动电极31;第2个驱动电极走线91横跨第1个触控驱动电极31连接到第2个触控驱动电极31,之后也可以不再往下延伸横跨第3个触控驱动电极31;第3个驱动电极走线91则横跨第1、2个触控驱动电极31连接到第3个触控驱动电极31。但是如上的布线方式,由于多个驱动电极走线91长度走线不均,可能引起各个区域光线透过不均匀,影响最终的显示效果。
因此,在本实施例中,如图5所示的,多个驱动电极走线91均在第二方向上横跨所有的触控驱动电极91,即,第1个驱动电极走线91连接到第1个触控 驱动电极31之后继续往下延伸横跨第2、3个触控驱动电极31;第2个驱动电极走线91横跨第1个触控驱动电极31连接到第2个触控驱动电极31,之后继续往下延伸横跨第3个触控驱动电极31;第3个驱动电极走线91则横跨第1、2个触控驱动电极31连接到第3个触控驱动电极31。由此可避免多个驱动电极走线91长度走线不均可能引起的光学问题。
但是,当驱动电极走线91横跨不与其连接的触控驱动电极31时,驱动电极走线91会对这些触控驱动电极31的信号产生影响。因此,在本实施例中,参阅图3-图5以及图7,其中图7是图5中沿x1线的剖面图,每一驱动电极走线91在所述多个触控驱动电极31上的投影区域,除了与该驱动电极走线91电性连接的触控驱动电极31,其余触控驱动电极31在所述投影区域通过挖空形成第一空载区33。以第1个驱动电极走线91为例,第1个驱动电极走线91连接到第1个触控驱动电极31,则第2、3个触控驱动电极31中对应于第1个驱动电极走线91的投影区域通过挖空形成第一空载区33。通过设置第一空载区33可以减小驱动电极走线91对不与其连接的触控驱动电极31的影响。并且,如图7所示的,当第一空载区33的宽度d1不小于驱动电极走线91的宽度d2时,可获得更好的效果。
在本实施例中,如图8所示,每一驱动电极走线91包括多条电性连通的金属线91a,每一悬浮电极走线92包括多条电性连通金属线92a。进一步地,对于传输触控驱动信号的驱动电极走线91,不同的驱动电极走线91中信号传输的距离(从信号输入端到对应的触控驱动电极32的距离)不同。为了使各个驱动电极走线91更好地匹配阻抗,因此,对于多个驱动电极走线91,其中与触控驱动电极31连接的位置越远离信号输入端的驱动电极走线91,其包括数量越多的金属线91a。例如,参阅图5和图9,若第1个驱动电极走线91包括3条金属线91a,则第2个驱动电极走线91可设定为包括4条(也可以更多)金属线91a。按照同样的方式,第3个驱动电极走线91可包括的金属线91a比第2个驱动电极走线91的更多。
本实施例还提供了一种内嵌触摸液晶面板,如图10所示,该内嵌触摸液晶面板包括前述实施例中提供的薄膜晶体管阵列基板100,还包括与阵列基板100相对设置的彩色滤光基板200,以及设置于阵列基板100和彩色滤光基板200之间的液晶层300。
综上所述,本发明实施例提供的内嵌触摸液晶面板及其阵列基板,通过对 设置于阵列基板中的触摸屏结构进行改进,使得触控驱动电极的连接走线不再占据面板的边框,减小了液晶面板边框的宽度,有利于实现产品窄边框的要求。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本申请的具体实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本申请原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本申请的保护范围。

Claims (20)

  1. 一种内嵌触摸液晶面板的阵列基板,包括玻璃基板以及依次形成于所述玻璃基板上的薄膜晶体管、公共电极层以及像素电极,其中,所述公共电极层与所述薄膜晶体管之间设置有第一绝缘层,所述公共电极层与所述像素电极之间设置有钝化层,所述像素电极通过第一过孔与所述薄膜晶体管电性连接,其中,
    所述公共电极层被划分为多个相互绝缘的长条状的触控驱动电极,所述触控驱动电极沿第一方向延伸;每一触控驱动电极中沿第一方向上设置有多个与该触控驱动电极相互绝缘的悬浮电极;
    所述公共电极层与所述钝化层之间还依次设置有第二绝缘层和金属走线层;其中,所述第二绝缘层中对应于每一触控驱动电极分别设置有一个第二过孔和多个第三过孔,所述多个第三过孔对应于每一触控驱动电极中多个悬浮电极;所述金属走线层中包括沿第二方向延伸的相互绝缘的多个驱动电极走线、多个悬浮电极走线以及多个触控感应电极;所述多个驱动电极走线一一对应于所述多个触控驱动电极,每一驱动电极走线通过所述第二过孔电性连接其中的一个触控驱动电极,每一悬浮电极走线通过所述第三过孔电性连接到沿第二方向上排列的多个悬浮电极;
    其中,第一方向与第二方向相互垂直。
  2. 根据权利要求1所述的阵列基板,其中,所述多个驱动电极走线均在第二方向上横跨所有的触控驱动电极;每一驱动电极走线在所述多个触控驱动电极上的投影区域,除了与该驱动电极走线电性连接的触控驱动电极,其余触控驱动电极在所述投影区域通过挖空形成第一空载区。
  3. 根据权利要求2所述的阵列基板,其中,所述金属走线层中的驱动电极走线、悬浮电极走线以及触控感应电极均设置于阵列基板的非显示区域上。
  4. 根据权利要求2所述的阵列基板,其中,所述第一空载区的宽度不小于所述驱动电极走线的宽度。
  5. 根据权利要求3所述的阵列基板,其中,所述第一空载区的宽度不小于所述驱动电极走线的宽度。
  6. 根据权利要求1所述的阵列基板,其中,所述第二过孔和/或所述第三过孔包括多个通孔。
  7. 根据权利要求1所述的阵列基板,其中,每一驱动电极走线包括多条电性连通金属线,每一悬浮电极走线包括多条电性连通的金属线。
  8. 根据权利要求7所述的阵列基板,其中,所述多个驱动电极走线中,与触控驱动电极连接的位置越远离信号输入端的驱动电极走线,其包括数量越多的金属线。
  9. 根据权利要求1所述的阵列基板,其中,所述第二绝缘层中对应于每一悬浮电极设置有n个第三过孔,沿第二方向上排列的一列悬浮电极上方设置有n个悬浮电极走线,n为大于1的整数。
  10. 根据权利要求2所述的阵列基板,其中,所述第二绝缘层中对应于每一悬浮电极设置有n个第三过孔,沿第二方向上排列的一列悬浮电极上方设置有n个悬浮电极走线,n为大于1的整数。
  11. 一种内嵌触摸液晶面板,包括相对设置的薄膜晶体管阵列基板和彩色滤光基板,还包括位于所述薄膜晶体管阵列基板和彩色滤光基板之间的液晶层,其中,所述薄膜晶体管阵列基板包括玻璃基板以及依次形成于所述玻璃基板上的薄膜晶体管、公共电极层以及像素电极,其中,所述公共电极层与所述薄膜晶体管之间设置有第一绝缘层,所述公共电极层与所述像素电极之间设置有钝化层,所述像素电极通过第一过孔与所述薄膜晶体管电性连接,其中,
    所述公共电极层被划分为多个相互绝缘的长条状的触控驱动电极,所述触控驱动电极沿第一方向延伸;每一触控驱动电极中沿第一方向上设置有多个与该触控驱动电极相互绝缘的悬浮电极;
    所述公共电极层与所述钝化层之间还依次设置有第二绝缘层和金属走线层;其中,所述第二绝缘层中对应于每一触控驱动电极分别设置有一个第二过孔和多个第三过孔,所述多个第三过孔对应于每一触控驱动电极中多个悬浮电极;所述金属走线层中包括沿第二方向延伸的相互绝缘的多个驱动电极走线、多个悬浮电极走线以及多个触控感应电极;所述多个驱动电极走线一一对应于所述多个触控驱动电极,每一驱动电极走线通过所述第二过孔电性连接其中的一个触控驱动电极,每一悬浮电极走线通过所述第三过孔电性连接到沿第二方向上排列的多个悬浮电极;
    其中,第一方向与第二方向相互垂直。
  12. 根据权利要求11所述的内嵌触摸液晶面板,其中,所述多个驱动电极走线均在第二方向上横跨所有的触控驱动电极;每一驱动电极走线在所述多个触控驱动电极上的投影区域,除了与该驱动电极走线电性连接的触控驱动电极,其余触控驱动电极在所述投影区域通过挖空形成第一空载区。
  13. 根据权利要求12所述的内嵌触摸液晶面板,其中,所述金属走线层中的驱动电极走线、悬浮电极走线以及触控感应电极均设置于阵列基板的非显示区域上。
  14. 根据权利要求12所述的内嵌触摸液晶面板,其中,所述第一空载区的宽度不小于所述驱动电极走线的宽度。
  15. 根据权利要求13所述的内嵌触摸液晶面板,其中,所述第一空载区的宽度不小于所述驱动电极走线的宽度。
  16. 根据权利要求11所述的内嵌触摸液晶面板,其中,所述第二过孔和/或所述第三过孔包括多个通孔。
  17. 根据权利要求11所述的内嵌触摸液晶面板,其中,每一驱动电极走线包括多条电性连通金属线,每一悬浮电极走线包括多条电性连通的金属线。
  18. 根据权利要求17所述的内嵌触摸液晶面板,其中,所述多个驱动电极走线中,与触控驱动电极连接的位置越远离信号输入端的驱动电极走线,其包括数量越多的金属线。
  19. 根据权利要求11所述的内嵌触摸液晶面板,其中,所述第二绝缘层中对应于每一悬浮电极设置有n个第三过孔,沿第二方向上排列的一列悬浮电极上方设置有n个悬浮电极走线,n为大于1的整数。
  20. 根据权利要求12所述的内嵌触摸液晶面板,其中,所述第二绝缘层中对应于每一悬浮电极设置有n个第三过孔,沿第二方向上排列的一列悬浮电极上方设置有n个悬浮电极走线,n为大于1的整数。
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