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 PDFInfo
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- 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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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
Description
Claims (20)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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US14/891,371 US9841834B2 (en) | 2015-09-25 | 2015-10-12 | In-cell touch liquid crystal panels and the array substrates thereof |
GB1806682.9A GB2562899B (en) | 2015-09-25 | 2015-10-12 | In-cell touch liquid crystal panels and the array substrates thereof |
KR1020187011760A KR102015937B1 (ko) | 2015-09-25 | 2015-10-12 | 인-셀 터치 액정 패널 및 그 어레이 기판 |
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CN201510624607.1A CN105138184B (zh) | 2015-09-25 | 2015-09-25 | 一种内嵌触摸液晶面板及其阵列基板 |
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CN105138184A (zh) | 2015-12-09 |
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KR102015937B1 (ko) | 2019-08-29 |
US9841834B2 (en) | 2017-12-12 |
KR20180063175A (ko) | 2018-06-11 |
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GB2562899B (en) | 2019-06-05 |
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