WO2016201891A1 - 触控基板及其制备方法、显示装置 - Google Patents
触控基板及其制备方法、显示装置 Download PDFInfo
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- WO2016201891A1 WO2016201891A1 PCT/CN2015/095408 CN2015095408W WO2016201891A1 WO 2016201891 A1 WO2016201891 A1 WO 2016201891A1 CN 2015095408 W CN2015095408 W CN 2015095408W WO 2016201891 A1 WO2016201891 A1 WO 2016201891A1
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- Prior art keywords
- electrode layer
- touch
- touch substrate
- connecting line
- electrode
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Definitions
- Embodiments of the present invention relate to a touch substrate, a method of fabricating the same, and a display device.
- the border of the touch screen should reserve a part of space to accommodate the driving circuit.
- today's digital products are increasingly demanding narrow borders (ie, the invisible areas of the screen have a narrow width).
- narrow borders ie, the invisible areas of the screen have a narrow width.
- reducing the width of the border achieving a narrow border or even a borderless design has become a difficult design.
- a touch substrate including a touch area.
- the touch area includes mutually insulated first electrode layers and second electrode layers disposed on the substrate, the first electrode layer including a plurality of sensing electrodes and first connecting portions arranged along rows and columns;
- the second electrode layer includes a second connecting portion; the sensing electrodes are connected by the first connecting portion in the same row; the sensing electrodes are connected in the same column by the second connecting portion; the first connecting portion and the first connecting portion
- the second connecting portion is insulated and intersects; a side of the first electrode layer remote from the second electrode layer is provided with a connecting line connected to the sensing electrode, and the connecting line is used for transmitting a touch driving signal or a touch Detecting signals; the connecting lines are drawn on the same side of the touch substrate.
- an orthographic projection of the connecting line at the first electrode layer is located in the touch area.
- the orthographic projection of the connecting line at the first electrode layer is between adjacent sensing electrodes.
- the touch substrate further includes a second insulating layer on a side of the first electrode layer away from the second electrode layer, wherein the connecting line passes through the second insulating layer and the sensing electrode position Corresponding vias are connected to the sensing electrodes.
- each of the sensing electrodes is led out through a connecting line; each of the sensing electrodes is led out through a connecting line.
- the second insulating layer is provided with a groove, and one end of the groove starts from the through hole Extending to the same side of the touch substrate.
- an orthographic projection of the groove at the first electrode layer is between the sensing electrodes.
- the connecting wires are made of a transparent conductive material.
- the transparent conductive material comprises a nanosilver material.
- a signal shielding layer is provided on the bottom surface of the groove.
- the signal shielding layer has a rough surface.
- the surface of the signal shielding layer has grooves or protrusions.
- connection line is disposed on the signal shielding layer.
- a method of fabricating a touch substrate includes: forming a first electrode layer and a second electrode layer insulated from each other on a substrate, the first electrode layer including a plurality of sensing electrodes arranged in rows and columns, and a first connecting portion, the first The second electrode layer includes a second connecting portion, and the sensing electrodes are connected by the first connecting portion in the same row, and the sensing electrodes are connected in the same column by the second connecting portion, the first connecting portion and the second connecting portion
- the connecting portion is insulated and intersects; and a connecting line connected to the sensing electrode is formed on a side of the first electrode layer away from the second electrode layer, wherein the connecting line is used for transmitting a touch driving signal or touch detection And a signal is drawn on the same side of the touch substrate.
- the method further includes: forming a second insulating layer on a side of the first electrode layer away from the second electrode layer and forming a via hole corresponding to the position of the sensing electrode in the second insulating layer; And forming the connecting line on the second insulating layer.
- the connecting line is connected to the sensing electrode through the via.
- the method further includes: forming a second insulating layer on a side of the first electrode layer away from the second electrode layer, and forming a groove in the second insulating layer by using a two-tone mask a via hole corresponding to the position of the sensing electrode, one end of the groove extending from the via hole to the same side of the touch substrate; and the connecting line is formed in the groove.
- the connecting line is connected to the sensing electrode through the via.
- the method further includes: forming a signal shielding layer in the recess; and forming the connecting line on the signal shielding layer.
- the surface of the signal shielding layer has grooves or protrusions.
- the orthographic projection of the connecting line at the first electrode layer is between adjacent sensing electrodes.
- the display device also includes the above The touch substrate described.
- FIG. 1 is a cross-sectional view of a touch substrate in accordance with an embodiment of the present invention
- FIG. 2 is a top plan view of a touch substrate according to an embodiment of the present invention.
- 3 is a cross-sectional view showing the touch substrate after the completion of the via holes and the grooves in the embodiment of the present invention
- FIG. 4 is a cross-sectional view showing a touch substrate after applying a signal shielding layer according to an embodiment of the present invention
- FIG. 5 is a cross-sectional view showing a touch substrate after a rough surface is formed on a signal shielding layer according to an embodiment of the invention.
- an embodiment of the present invention provides a touch substrate including a touch area including a first electrode layer and a second electrode layer which are insulated from each other on a substrate 1.
- the first electrode layer includes a plurality of sensing electrodes arranged in rows and columns and a first connecting portion 8; the second electrode layer includes a second connecting portion 2; the same row adjacent to the sensing electrode 4 passes through the first a connection portion 8; the same column adjacent to the sensing electrode 4 is connected by a second connection portion 2; the first connection portion 8 and the second connection portion 2 are insulated and intersected; the first electrode layer is away from the One side of the second electrode layer is provided with a connecting line 7 connected to the sensing electrode, and the connecting line 7 is used for transmitting a touch driving signal or a touch detection signal; the connecting line 7 is on the touch substrate. The same side is taken out.
- the touch substrate provided by the embodiment of the present invention has all the connection lines 7 of the sensing electrodes 4 from the touch base. The same side of the board is led out, enabling a borderless or narrow bezel design.
- the same side of the touch substrate generally refers to the side where the driving integrated circuit of the touch substrate is located, for example, the side of the touch screen of the mobile phone provided with the function keys (for example, the touch screen of the mobile phone) The lower end).
- the second insulating layer 5 is transparently shown in FIG. 2, and the arrangement of the sensing electrodes 4 and the gap region between the adjacent sensing electrodes 4 can be seen.
- the connection line 7, the signal shielding layer 6 itself may be made of a transparent material; however, in order to facilitate understanding of the relationship of the layers, the figure is shown in black.
- an orthographic projection of the connecting line 7 at the first electrode layer is located in the touch area.
- the connecting line 7 is disposed in the touch area, thereby further avoiding the problem that the connecting line 7 is disposed in the peripheral area and the frame is wide.
- the connecting line 7 can be flexibly arranged in the touch area, is convenient to manufacture, and reduces the manufacturing cost.
- the orthographic projection of the connecting line 7 at the first electrode layer is between adjacent sensing electrodes.
- the connecting line 7 is disposed at a periphery to cause a wide border, and it is possible to weaken the influence of the signal of the connecting line 7 on the sensing electrode signal.
- the touch substrate according to the embodiment of the present invention further includes a second insulating layer 5 on a side of the first electrode layer away from the second electrode layer, and the connecting line 7 passes through the second insulating layer 5 A via 9 corresponding to the position of the sensing electrode 4 is connected to the sensing electrode 4.
- the connecting wires 7 and the sensing electrodes 4 are arranged in different layers, the arrangement of the connecting wires 7 is more flexible and free, and the connecting wires 7 are easily taken out from the same side of the touch substrate.
- the pattern of the connecting line 7 can be designed into various patterns by considering factors such as parasitic capacitance, noise, visibility, etc., thereby eliminating the need for routing from the frame and achieving a borderless design. That is to say, the connecting lines 7 can be arranged as needed (as long as they do not intersect), for example, in order to reduce the length of each connecting line 7, a linear parallel arrangement can be employed.
- the sensing electrodes 4 are led out by a connecting line 7 per row; and each of the sensing electrodes 4 is led out by a connecting line 7.
- each row or column of sensing electrodes 4 transmits the same touch driving signal or touch detection signal, the sensing electrodes 4 connected to each row or column can be led out through a connecting line 7.
- the second insulating layer 5 is provided with a recess 10 (a portion filled with the connecting line 7 and the signal shielding layer 6 in FIG. 1), and one end of the recess 10 is Said via 9
- the dots extend to the same side of the touch substrate.
- the groove 10 in Fig. 2 is a grid line portion, and the groove 10 is at least partially covered by the connecting line 7.
- the above-mentioned groove 10 is used for arranging the connecting wire 7 to facilitate the formation of the connecting wire 7 by screen printing.
- the connecting wire 7 is connected from the via hole 9 to the sensing electrode 4 while being drawn from the same side of the touch substrate.
- an orthographic projection of the groove 10 at the first electrode layer is located between the sensing electrodes 4.
- the respective connecting wires 7 are arranged in parallel to facilitate the production of the connecting wires 7.
- the connecting line 7 is made of a transparent conductive material. In this way, the light transmittance of the touch substrate can be increased.
- the connecting line 7 is made of a nanosilver material. Since the connecting wire 7 is made of a nano silver material, the square resistance of the connecting wire 7 can be reduced while ensuring transparency.
- a signal shielding layer 6 is disposed on the bottom surface of the recess 10.
- the signal shielding layer 6 is made of a transparent material.
- the signal shielding layer 6 has a rough surface. Since the signal shielding layer 6 has a rough surface, the scattering of the light can be used to eliminate the shadow while shielding the signal.
- the surface of the signal shielding layer 6 has grooves or protrusions.
- the use of light scattering on the grooves or protrusions acts as a shadow. It should be understood that other types of rough surfaces are also possible.
- connection line 7 is disposed on the signal shielding layer 6. This can make full use of the groove 10 area to reduce the thickness of the touch substrate.
- a method for preparing a touch substrate includes the steps of: forming a connection line on the substrate on which the sensing electrode is formed, the connection line is connected to the sensing electrode, and the connection line is used for transmitting a touch driving signal or a touch detection signal,
- the connecting lines are drawn on the same side of the touch substrate.
- the preparation method includes the following steps:
- the second insulating layer includes a via hole exposing the sensing electrode, and one end is connected to the via hole and the other end is taken out from the same side of the touch substrate Groove
- a connecting line is formed on the rough surface of the signal shielding layer, and the connecting line is used to transmit a touch driving signal or a touch detection signal.
- the step of preparing the signal shielding layer includes screen printing; the step of preparing the rough surface on the signal shielding layer includes a rubbing method; and the step of preparing the connecting line includes screen printing.
- the preparation method includes the following steps:
- steps S1-S3 can adopt the method for fabricating the basic structure of the touch substrate in the prior art, and will not be further described herein.
- a second insulating layer 5 is coated on the substrate 1 on which the sensing electrodes 4 are formed, and then a negative photoresist (which may also be a positive photoresist) is applied through the two-tone mask. Exposing the photoresist, the reticle including a partial light-transmissive region corresponding to the via 9 and a light-transmitting region corresponding to the recess 10, thus controlling the exposure amount of the photoresist corresponding to the via 9 and the recess 10, The via 9 is etched to expose the sensing electrode 4 during etching, and only a portion of the second insulating layer 5 is etched at the recess 10 to form a recess 10, one end of the recess 10 is connected to the via 9 and the other end is The touch substrate is led out on the same side.
- the signal shielding layer 6 can be prepared by screen printing.
- the material of the signal shielding layer 6 can be selected from the SANTE series products produced by CIMA Nanotechnology.
- a rough surface is formed on the signal shielding layer 6 by a rubbing method.
- the signal shielding layer 6 can be rubbed with a roller having a rough surface to form a signal shielding layer 6 having a rough surface.
- the surface of the roller may be provided as a surface having a groove or a surface having a protrusion so that a surface having a groove or a protrusion may be formed on the signal shielding layer 6. surface.
- the signal shielding layer 6 acts to shield the external signal to prevent the external signal from affecting the sensing electrode 4, and can also perform light scattering through the rough surface to produce a shadowing effect.
- connection line 7 is formed on the signal shielding layer 6.
- the connecting line 7 is formed by screen printing. Screen printing can be performed using nano silver paste to form the connecting line 7.
- a connecting line 7 having one end connected to the sensing electrode 4 and the other end drawn on the same side of the substrate is obtained by printing, and the connecting line 7 is prepared using a transparent conductive material.
- the nano silver material is used to prepare the connecting line, so that the square resistance of the connecting line 7 is relatively small.
- a display device comprising the above touch substrate.
- the display device may be any product or component having a display function such as a touch screen, a liquid crystal display panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
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- Position Input By Displaying (AREA)
Abstract
Description
Claims (20)
- 一种触控基板,包括触控区域,其中所述触控区域包括设置在衬底上的相互绝缘的第一电极层和第二电极层,所述第一电极层包括沿行、列排布的多个感应电极和第一连接部;所述第二电极层包括第二连接部;同一行相邻所述感应电极通过第一连接部连接;同一列相邻所述感应电极通过第二连接部连接;所述第一连接部和所述第二连接部绝缘交叉;所述第一电极层的远离所述第二电极层的一侧设有与所述感应电极连接的连接线,所述连接线用于传递触控驱动信号或触控检测信号;所述连接线在所述触控基板的同一侧引出。
- 如权利要求1所述的触控基板,其中所述连接线在所述第一电极层的正投影位于所述触控区域内。
- 如权利要求2所述的触控基板,其中所述连接线在所述第一电极层的正投影位于相邻的感应电极之间。
- 如权利要求1所述的触控基板,还包括位于所述第一电极层的远离所述第二电极层的一侧的第二绝缘层,所述连接线通过位于第二绝缘层上与所述感应电极位置相对应的过孔与所述感应电极连接。
- 如权利要求1所述的触控基板,其中每行所述感应电极通过一根连接线引出;每列所述感应电极通过一根连接线引出。
- 如权利要求4所述的触控基板,其中所述第二绝缘层上设有凹槽,所述凹槽的一端以所述过孔为起点延伸至所述触控基板的同一侧。
- 如权利要求6所述的触控基板,其中所述凹槽在第一电极层的正投影位于所述感应电极之间。
- 如权利要求1所述的触控基板,其中所述连接线是采用透明导电材料制备的。
- 如权利要求8所述的触控基板,其中所述的透明导电材料包括纳米银材料。
- 如权利要求6所述的触控基板,其中所述凹槽的底面上设有信号屏 蔽层。
- 如权利要求10所述的触控基板,其中所述信号屏蔽层具有粗糙的表面。
- 如权利要求11所述的触控基板,其中所述信号屏蔽层的表面具有沟槽或突起。
- 如权利要求10所述的触控基板,其中所述连接线设置于所述信号屏蔽层上。
- 一种触控基板的制备方法,包括:在衬底上形成相互绝缘的第一电极层和第二电极层,所述第一电极层包括沿行、列排布的多个感应电极和第一连接部,所述第二电极层包括第二连接部,同一行相邻所述感应电极通过第一连接部连接,同一列相邻所述感应电极通过第二连接部连接,所述第一连接部和所述第二连接部绝缘交叉;并且在所述第一电极层远离所述第二电极层的一侧形成与所述感应电极连接的连接线,其中所述连接线用于传递触控驱动信号或触控检测信号,并且所述连接线在所述触控基板的同一侧引出。
- 根据权利要求14所述的触控基板的制备方法,还包括:在所述第一电极层远离所述第二电极层的一侧形成第二绝缘层并在第二绝缘层中形成与所述感应电极位置相对应的过孔;并且在所述第二绝缘层上形成所述连接线,其中所述连接线通过所述过孔与所述感应电极连接。
- 根据权利要求14所述的触控基板的制备方法,还包括:在所述第一电极层远离所述第二电极层的一侧形成第二绝缘层,并采用双色调掩模板在第二绝缘层中形成凹槽和与所述感应电极位置相对应的过孔,所述凹槽的一端以所述过孔为起点延伸至所述触控基板的同一侧;并且在所述凹槽内形成所述连接线,其中所述连接线通过所述过孔与所述感应电极连接。
- 根据权利要求16所述的触控基板的制备方法,还包括:在所述凹槽内形成信号屏蔽层;并且在所述信号屏蔽层上形成所述连接线。
- 根据权利要求17所述的触控基板的制备方法,其中所述信号屏蔽层的表面具有沟槽或突起。
- 根据权利要求16所述的触控基板的制备方法,其中所述连接线在所述第一电极层的正投影位于相邻的感应电极之间。
- 一种显示装置,包括如权利要求1-13任一所述的触控基板。
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US15/114,211 US9996188B2 (en) | 2015-06-15 | 2015-11-24 | Touch substrate and fabrication method thereof and display apparatus |
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CN015103294637 | 2015-06-15 | ||
CN201510329463.7 | 2015-06-15 |
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WO2023279234A1 (zh) * | 2021-07-05 | 2023-01-12 | 京东方科技集团股份有限公司 | 触控面板及触控显示装置 |
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CN111475046B (zh) * | 2020-04-03 | 2023-11-21 | 京东方科技集团股份有限公司 | 一种触控基板、显示面板及触控显示装置 |
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