WO2022062216A1 - 触控面板及电子设备 - Google Patents

触控面板及电子设备 Download PDF

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Publication number
WO2022062216A1
WO2022062216A1 PCT/CN2020/138508 CN2020138508W WO2022062216A1 WO 2022062216 A1 WO2022062216 A1 WO 2022062216A1 CN 2020138508 W CN2020138508 W CN 2020138508W WO 2022062216 A1 WO2022062216 A1 WO 2022062216A1
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WO
WIPO (PCT)
Prior art keywords
conductive
touch
film
circuit
cover plate
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Application number
PCT/CN2020/138508
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English (en)
French (fr)
Inventor
廖健皓
杨自旺
Original Assignee
广州视睿电子科技有限公司
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Application filed by 广州视睿电子科技有限公司 filed Critical 广州视睿电子科技有限公司
Publication of WO2022062216A1 publication Critical patent/WO2022062216A1/zh

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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

  • the present application relates to the field of display technology, and in particular, to a touch panel and an electronic device.
  • the present application provides a touch panel and an electronic device, which can make the peripheral frame of the display area of the display device narrower under the condition of ensuring the display effect of the display device.
  • the touch panel provided by the embodiments of the present application includes a cover plate, a touch film, and a switching circuit board.
  • the cover plate includes a visible area and a light-shielding area arranged on the periphery of the visible area.
  • the light-shielding area is provided with a plurality of transfer parts; the touch film and the cover plate are stacked and arranged, and the touch film has a plurality of touch lines and a plurality of The connection end corresponding to the control circuit, the end of the touch circuit extends to the edge of the touch film and corresponds to the light-shielding area, the connection end is arranged at the end of the touch circuit and is in one-to-one correspondence with the adapter part and is electrically connected; the adapter circuit board and the touch
  • the films are jointly arranged on the same side of the cover plate and are located on the periphery of the touch film.
  • the transfer circuit board includes a circuit board body and a plurality of conductive lines arranged on the surface of the circuit board body, and the plurality of conductive lines and the plurality of transfer parts correspond one-to-one.
  • the electrical connection is such that the ends of the touch lines are electrically connected to the conductive lines through the connecting ends and the transfer parts in sequence, and the conductive lines are also used for electrical connection to external circuits.
  • the light-shielding area is further provided with a conductive film, one end of the conductive film is disposed between the adapter portion and the connection end so that one end of the adapter portion is electrically connected to the connection end, and the other end of the conductive film is disposed between the adapter portion and the connection end. Between the ends of the conductive lines, the other end of the transfer part is electrically connected to the conductive lines.
  • the conductive film is anisotropic conductive paste.
  • the adapter portion is fixedly connected to the connection end and the end portion of the conductive line respectively by soldering.
  • an adhesive layer is further provided in the light-shielding area of the cover plate, and the cover plate is connected to a plurality of switching circuit boards through the same layer of adhesive layer.
  • the touch control film further includes a base material, and the touch control circuit is arranged on the surface of the base material; the connection end is electrically connected to the end of the touch control circuit, and the connection end is a conductive silver paste connection end.
  • the transfer portion is a conductive silver paste transfer portion disposed on the surface of the cover plate.
  • the circuit board body includes a first surface corresponding to the cover plate and a second surface connected to the first surface and located on a side away from the touch film
  • the conductive circuit includes a first surface disposed on the first surface and electrically connected to the adapter portion The first conductive end, the connection line connecting the first conductive end and extending from the first surface to the second surface, and the second conductive end connecting the connection line and away from the first conductive end, the second conductive end is used for electrical connection to the external circuit.
  • the second surface is provided with a binding area
  • the second conductive ends of the plurality of conductive lines correspondingly connected by the plurality of transfer parts are located in the binding area
  • the transfer circuit board further includes a circuit board for connecting to an external circuit.
  • the connector is arranged in the binding area, and the connector is connected with the second conductive end.
  • an embodiment of the present application provides an electronic device including the above touch panel.
  • the present application provides a touch panel and an electronic device, in which touch signals generated by a touch circuit of the touch panel are sequentially passed through a connection end on a touch film, a transition part in a light-shielding area of a cover plate, and a transition circuit board.
  • the conductive traces are passed to the external circuit.
  • the transfer part is arranged in the light-shielding area of the cover plate, and the transfer circuit board is arranged on the periphery of the touch film;
  • the conductive circuit on the circuit board is connected to the external circuit, and it is not necessary to extend the end of the touch circuit to the edge of the touch film and then turn to connect to the external circuit, which saves the installation area occupied by the end of the touch circuit along the direction parallel to the cover surface. It is convenient to design the narrow bezel of the touch panel.
  • FIG. 1 is a three-dimensional structural diagram of a touch panel according to an embodiment of the present application.
  • FIG. 2 is a three-dimensional structural view of a touch panel assembly according to an embodiment of the present application
  • FIG. 3 is a partial cross-sectional view of a touch panel according to an embodiment of the present application.
  • FIG. 4 is a partial cross-sectional view of a touch panel with a conductive film installed in an embodiment of the present application
  • Fig. 5 is a schematic diagram of the three-dimensional structure of the assembly of the switching circuit board, the conductive film and the switching portion in an embodiment of the application;
  • FIG. 6 is a partial cross-sectional view of a touch panel with an adhesive layer installed in an embodiment of the present application
  • FIG. 7 is a partial cross-sectional view of the touch panel with the connector installed toward the touch film according to an embodiment of the present application.
  • the peripheral frame of the touch panel is narrower.
  • the inventor found that when the touch circuit layer is arranged on the touch film of the display device, in the direction parallel to the surface of the touch panel, the touch circuit occupies the display area, and the touch circuit is used to connect with other circuits to conduct conduction.
  • the end of the signal occupies the peripheral area of the display area.
  • the end of the touch circuit occupies the light-shielding area of the display device, which affects the narrow frame design of the display device.
  • the present application provides a touch panel, which reduces the area occupied by the end of the touch circuit and realizes the narrow frame design of the touch panel under the condition of ensuring the display effect.
  • the touch panel provided in the embodiments of the present application can be applied to electronic devices with touch interaction such as mobile phones, electronic readers, remote controls, personal computers, notebook computers, touch processing equipment, and touch detection equipment.
  • the touch panel 100 includes a cover plate 110 , a touch film 120 and an adapter circuit board 130 .
  • the cover plate 110 includes a visible area 111 and a shading area 112 disposed around the visible area 111 , and the shading area 112 is provided with a plurality of transition parts 113 .
  • the cover plate 110 can be a flat plate-shaped cover plate 110 made of glass and other materials.
  • the cover plate 110 can include an object side facing the user and an image side opposite to the object side.
  • the surface of the light-shielding area 112 on the image side is provided with light-shielding materials.
  • the light-shielding material can be flatly distributed on the surface of the cover plate 110 and completely cover the area where the light-shielding area 112 is located.
  • the touch film 120 and the cover plate 110 are stacked and disposed.
  • the touch film 120 has a plurality of touch lines 121 and a plurality of connection ends 122 corresponding to the touch lines 121 one-to-one.
  • the ends of the touch lines 121 Extending to the edge of the touch film 120 and corresponding to the light-shielding area 112 , the connecting end 122 is disposed at the end of the touch circuit 121 and is in one-to-one correspondence with the connecting portion 113 and is electrically connected.
  • the touch circuit 121 may include a first part for sensing the touch signal and a second part for conducting the signal, and the connection terminal 122 is electrically connected to the second part of the touch circuit 121 for conducting the signal.
  • the touch film 120 further includes a substrate 123 , a plurality of touch circuits 121 are arranged on the surface of the substrate 123 , and the first part of the touch circuits 121 is arranged corresponding to the visible area 111 of the cover plate 110 , and the first part of the touch circuits 121 is arranged correspondingly to the visible area 111 of the cover plate 110 . Both ends of the two parts are respectively electrically connected to the first part and the connecting end 122 , and the connecting end 122 is disposed corresponding to the light-shielding area 112 of the cover plate 110 . It can be understood that, in some other embodiments, the connection terminal 122 may also be a part of the touch circuit 121 .
  • the adapter circuit board 130 includes a circuit board body 131 and a conductive circuit 132 disposed on the surface of the circuit board body 131 .
  • the conductive circuit 132 is electrically connected to the adapter portion 113 in a one-to-one correspondence, so that the touch signals sensed by the touch circuit 121 can be sequentially
  • a touch signal conduction path is formed by conducting the connection terminal 122 and the adapter portion 113 to the conductive circuit 132 , and the conductive circuit 132 can be used to electrically connect an external circuit to conduct the touch signal to the external circuit for analysis.
  • the touch signal generated by the touch circuit 121 is sequentially passed through the connecting end 122 of the touch film 12 , the transition portion 113 in the light-shielding area 112 , and the conductive circuit 132 of the transition circuit board 130 . passed to external circuits.
  • the transfer portion 113 is disposed in the light-shielding area 112 of the cover plate 110 , and the transfer circuit board 130 is disposed on the periphery of the touch film 120 .
  • connection direction of the external circuit is connected to the external circuit through the conductive circuit 132 on the switching circuit board 130, so that the end of the touch circuit 121 does not need to be extended to the outside of the touch film 120 and then connected to the external circuit, saving the end of the touch circuit 121
  • the installation area occupied by the portion along the direction parallel to the surface of the cover plate 110 is convenient for the narrow frame design of the touch panel 100 .
  • the touch circuit 121 is disposed on the surface of the substrate 123 , and the touch circuit 121 in the visible area 111 is used to sense the touch situation in the visible area 111 to generate touch signals.
  • Layers of touch circuits 121 each layer includes a plurality of touch circuits 121, a plurality of touch sensing electrodes (not shown in the figure) are arranged at intervals on the touch circuits 121 of the first layer, and the touch circuits 121 of the second layer are spaced
  • Set up a plurality of touch driving electrodes (not shown in the figure), under the action of the user's finger touch, the touch sensing electrodes and the touch driving electrodes are brought into contact and conduction to generate touch signals, and the generated touch signals are passed through the touch circuit.
  • the end portion of 121 is conducted to the connection end 122 and then conducted to the transfer portion 113 , the conductive line 132 and the connector 140 in turn, and then conducted to the external circuit through the connector 140 for touch signal analysis.
  • connection end 122 and the touch circuit 121 are disposed on the surface of the substrate 123 of the touch film 120 , and the connection end 122 is electrically connected to the end of the touch circuit 121 .
  • the connection end 122 can be made of the same material as the touch circuit 121 , for example , the connection end 122 and the touch circuit 121 can be provided on the surface of the base material 123 of the touch film 120 by using copper material, and the connection end 122 and the touch circuit 121 are integrally arranged, which is convenient for processing.
  • the connection end 122 can also be made of a material different from that of the touch circuit 121.
  • the touch circuit 121 can be made of copper material on the surface of the substrate 123 of the touch film 120, and the connection end 122 can be made of conductive silver paste.
  • the connection end 122 On the surface of the substrate 123 of the touch film 120 , the connection end 122 has better conductivity, the contact resistance between the connection end 122 and the adapter portion 113 is reduced, and the conductivity between the connection end 122 and the adapter portion 113 is improved. stability.
  • anisotropic conductive adhesive may be used for the transfer portion 113 , so that the transfer portion 113 is also convenient for direct connection with the transfer portion 113 under the condition that the electrical connection terminal 122 and the conductive line 132 are electrically connected.
  • the terminal 122 and the conductive line 132 are glued and fixed.
  • the adapter portion 113 can also be made of a metal material with good electrical conductivity.
  • the adapter portion 113 can be made of conductive silver paste to reduce the connection impedance between the adapter portion 113 and the connection end 122 and the conductive line 132 .
  • the light-shielding area 112 is further provided with a conductive film 160
  • the conductive film 160 can be partially covered on the surface of the transfer part 113, so that the conductive film 160 is arranged corresponding to the connection end 122, the conductive line 132 and the transfer part 113, for example, the conductive film 160 can be divided into two parts respectively provided on the connection end 122 and the transfer part between the parts 113 , between the conductive lines 132 and the transfer part 113 ; or the conductive film 160 can also cover the entire surface of the transfer part 113 .
  • the conductive film 160 can be anisotropic conductive adhesive. On the basis of electrically conducting the connection terminal 122 , the conductive circuit 132 and the adapter portion 113 , the connection terminal 122 and the conductive circuit 132 can also pass through the conductive film 160 and the adapter portion 113 .
  • the fixed connection prevents the relative displacement of the connecting portion 113, the connecting end 122 and the conductive line 132 from affecting the electrical conductivity.
  • the conductive film 160 can be selected from ACF conductive adhesive, ACP conductive adhesive and other colloids, and is disposed on the adapter portion 113 by printing or coating.
  • the interval between the 132 can also be adjusted correspondingly to the thickness of the conductive film 160 to further improve the connection stability.
  • the conductive film 160 covers the entire surface of the adapter portion 113, as shown in FIG.
  • the other end of the conductive film 160 is disposed between the transfer portion 113 and the end of the conductive line 132 so that the other end of the transfer portion 113 is electrically connected to the conductive line 132 .
  • the edge of the conductive film 160 can be extended to connect with the light-shielding material in the light-shielding area 112 or the surface of the cover plate 110, so that the conductive lines 132, the connection ends 122 and the conductive film 160 have sufficient effective connection area, and the connection stability is improved.
  • the transition portion 113 and the connection end 122 can also be dislocated.
  • the transition is ensured. Even when the three parts 113 , the connecting end 122 and the conductive line 132 are connected in a dislocation, they can still be electrically connected, so that the installation is more flexible.
  • the conductive film 160 is disposed between the transfer terminal and the transfer portion 113 or between the transfer portion 113 and the conductive circuit 132, so as to prevent external impurities from intervening between the transfer portion 113 and the transfer terminal, and between the transfer portion 113 and the conductive circuit 132.
  • the conductive stability is improved.
  • the conductive film 160 can also be connected to the surface of the substrate 123 of the touch film 120, the circuit board main body 131 of the circuit board 130 and other structural surfaces while connecting the adapter portion 113, the connecting end 122 and the conductive circuit 132.
  • the edge of 160 extends to connect with the light-shielding material in the light-shielding area 112 or the surface of the cover plate 110, and by adjusting the thickness of the conductive film 160 along the direction perpendicular to the surface of the cover plate 110, the conductive film 160 can also be the substrate 123 and the circuit board body 131. Support is provided to improve the connection stability between the touch film 120 and the transition circuit board 130 .
  • the conductive film 160 may include two parts, and the two portions of the conductive film 160 are respectively disposed between the connection end 122 and the adapter portion 113 , and the conductive line 132 and the adapter portion 113 , respectively.
  • the conductive film 160 can also include only a part, and is arranged between the connection end 122 and the transfer part 113 or between the conductive circuit 132 and the transfer part 113, and the corresponding connection end 122 and the transfer part 113, conductive
  • the portion between the circuit 132 and the transition portion 113 without the conductive film 160 may be fixed by soldering.
  • the transfer portion 113 can be fixedly connected with the connecting end 122 and the end of the conductive line 132 by soldering respectively, so as to realize the electrical connection between the transfer portion 113 , the connecting end 122 and the conductive line 132 .
  • an adhesive layer 114 is also provided in the light-shielding area 112 of the cover plate 110 , and the cover plate 110 is connected to a plurality of switching circuit boards 130 through the same layer of adhesive layer 114 . connect.
  • a layer of adhesive layer 114 may be disposed in the light-shielding area 112 of the cover plate 110, so that the adhesive layer 114 covers the plurality of transfer parts 113 and avoids the rotation.
  • the connection position of the connecting portion 113 and the conductive circuit 132 is determined, and then the circuit board bodies 131 of the plurality of transfer circuit boards 130 are attached to the adhesive layer 114, so that the ends of the conductive lines 132 are aligned with the connecting portion 113, and then Solder is provided at the solder point 115 between the conductive line 132 and the adapter portion 113 to complete the installation of the adapter circuit board 130 .
  • the conductive lines 132 on the switching circuit board 130 are used for connection with external circuits, and the conductive lines 132 may extend in a direction parallel to the surface of the cover plate 110 to be connected with external circuits. In order to save the area occupied by the conductive lines 132 in a direction parallel to the surface of the cover plate 110 , the conductive lines 132 may also extend along a direction perpendicular to the surface of the cover plate 110 to connect with external circuits. Specifically, as shown in FIG. 4 and FIG.
  • the circuit board body 131 includes a first surface 1311 facing the cover plate 110 and a second surface 1312 connected to the first surface 1311 and located on the side away from the touch film 120 , and the conductive lines 132 It includes a first conductive end 1321 disposed on the first surface 1311 and electrically connected to the adapter 113 , a connection line 1322 connected to the first conductive end 1321 and extending from the first surface 1311 to the second surface 1312 , and the connection line 1322
  • the second conductive end 1323 is far away from the first conductive end 1321.
  • the second conductive end 1323 is used to electrically connect the external circuit.
  • the extending direction of the conductive line 132 can be changed by arranging the conductive line 132 in sections to save installation space.
  • the first conductive end 1321 , the connecting line 1322 and the second conductive end 1323 can be integrally provided on the surface of the circuit board main body 131 .
  • the connection line 1322 and the second conductive end 1323 may also extend to the surface opposite to the second surface 1312 of the circuit board body 131 , so that the connection line 1322 and the second conductive end 1323 are connected to the surface of the circuit board body 131 .
  • the touch films 120 are disposed opposite to each other, and the connection lines 1322 , the second conductive ends 1323 are arranged at intervals from the connection ends 122 and the touch lines 121 , so that the installation of the switching circuit board 130 is more flexible.
  • the second surface 1312 is provided with a binding area 1313 , and the second conductive ends 1323 of the plurality of conductive lines 132 to which the plurality of transition portions 113 are correspondingly connected are located in the binding area 1313 , and the transition circuit board 130 further includes The connector 140 for connecting with the external circuit, the connector 140 is provided in the binding area 1313 , and the connector 140 is connected with the second conductive end 1323 , and the conductive line 132 is connected with the external circuit through the connector 140 .
  • the position of the binding area 1313 in the second surface 1312 and the connection direction between the connector 140 and the external circuit can be set according to actual installation requirements.
  • the connector 140 is arranged in the binding area 1313, and the connection position of the connector 140 and the external circuit is arranged in the direction away from the cover plate 110, so as to facilitate the connection between the connector 140 and the external circuit.
  • the external circuit may include a flexible circuit board 150 , one end of the flexible circuit board 150 is connected to the connector 140 , and the other end of the flexible circuit board 150 is connected to other control circuits, so that the touch signals generated by the touch circuit 121 are connected in sequence.
  • the terminal 122 , the adapter portion 113 , the conductive circuit 132 , the connector 140 , and the flexible circuit board 150 are transmitted to the control circuit to analyze the touch signal.
  • the embodiment of the present application also proposes an electronic device, which can be any device with a control function, such as a tablet computer, a mobile phone, an electronic reader, a detection device, a processing device, a vehicle-mounted device, a wearable device, and the like.
  • the electronic device includes a body and the above-mentioned touch panel 100, and the touch panel 100 is installed in the body of the electronic device. Since the touch panel 100 can realize a narrow frame design, the electronic device installed with the above-mentioned touch panel 100 A narrow frame design is also realized, the area of the visible area 111 is increased in a limited installation area, and the user experience is improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触控面板（100）及电子设备，触控面板（100）包括盖板（110）、触控薄膜（120）和转接电路板（130）。触控薄膜（120）上的触控线路（121）端部延伸至盖板（110）的遮光区（112）并与连接端（122）连接；遮光区（112）设有与连接端（122）对应连接的转接部（113），转接电路板（130）与触控薄膜（120）共同设置于盖板（110）同侧并位于触控薄膜（120）外围，转接电路板（130）上的导电线路（132）与转接部（113）对应连接，使得触控线路（121）产生的信号依序经由连接端（122）、转接部（113）、导电线路（132）传递给外部电路。

Description

触控面板及电子设备
本申请要求在2020年09月28日提交中国专利局、申请号为202022178135.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种触控面板及电子设备。
背景技术
随着电子设备的发展，消费者追求显示装置的屏占比，希望能够在尽量小的尺寸内，有尽量大的有效显示面积。相关技术中，电子装置边框所在的区域需要布设传导信号的电路等结构，电路除需布设于显示区域内，还需向显示区域外围延伸与其他传导电路连接以传导信号，在各电路的连接部位之间还需安装转接或封装等结构，这些做法，都加大了电子设备显示区域周边的宽度，使显示装置无法呈现出四边或周边极窄边框的效果。
发明内容
本申请提供一种触控面板及电子设备，在保证显示装置显示效果的情况下，能够使显示装置的显示区域周边边框更窄。
第一方面，本申请实施例提供的触控面板，包括盖板、触控薄膜和转接电路板。盖板包括可视区以及设于可视区外围的遮光区，遮光区设置有多个转接部；触控薄膜与盖板层叠设置，触控薄膜具有多条触控线路及多个与触控线路对应的连接端，触控线路端部延伸至触控薄膜边缘并对应遮光区，连接端设置于触控线路端部与转接部一一对应且电连接；转接电路板与触控薄膜共同设置于盖板同侧并位于触控薄膜外围，转接电路板包括电路板主体及设置于电路板主体表面的多条导电线路，且多条导电线路与多个转接部一一对应电连接，使得触控线路端部依序经由连接端、转接部电连接导电线路，导电线路还用于电连接外部电路。
在一些实施例中，遮光区还设有导电膜，导电膜其中一端设于转接部与连接端之间使得转接部的一端与连接端电连接，导电膜另一端设于转接部与导电线路端部之间使得转接部的另一端与导电线路电连接。
在一些实施例中，导电膜为异方性导电胶。
在一些实施例中，转接部与连接端、导电线路端部分别焊锡固定连接。
在一些实施例中，盖板的遮光区内还设有粘结层，盖板通过同一层粘结层与多个转接电路板连接。
在一些实施例中，触控薄膜还包括基材，触控线路设于基材表面；连接端与触控线路端部电连接，连接端为导电银浆连接端。
在一些实施例中，转接部为设于盖板表面的导电银浆转接部。
在一些实施例中，电路板主体包括对应盖板的第一表面及连接第一表面且位于远离触控薄膜一侧的第二表面，导电线路包括设置于第一表面且与转接部电连接的第一导电端、连接第一导电端且自第一表面延伸至第二表面的连接线路、连接连接线路且远离第一导电端的第二导电端，第二导电端用于电连接外部电路。
在一些实施例中，第二表面设有绑定区，多个转接部对应连接的多个导电线路的第二导电端位于绑定区，转接电路板还包括用于与外部电路连接的连接器，连接器设于绑定区，且连接器与第二导电端连接。
第二方面，本申请实施例提供一种电子设备，包括如上所述的触控面板。
本申请提供一种触控面板及电子设备，将触控面板的触控线路产生的触控信号依序经触控薄膜上的连接端、盖板遮光区的转接部、转接电路板上的导电线路传递给外部电路。转接部设于盖板的遮光区内，转接电路板设于触控薄膜外围，通过转接部和转接电路板上的导电线路改变触控线路与外部电路连接方向，并通过转接电路板上的导电线路与外部电路连接，无需触控线路端部向触控薄膜边缘延伸后再转向与外部电路连接，节省触控线路端部沿平行于盖板板面方向占用的安装面积，便于触控面板窄边框设计。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一种实施例中触控面板立体结构图；
图2为本申请一种实施例中触控面板组装立体结构图；
图3为本申请一种实施例中触控面板局部剖视图；
图4为本申请一种实施例中安装有导电膜的触控面板局部剖视图；
图5为本申请一种实施例中转接电路板、导电膜与转接部组装立体结构示 意图；
图6为本申请一种实施例中安装有粘结层的触控面板局部剖视图；
图7为本申请一种实施例中连接器朝向触控薄膜安装的触控面板局部剖视图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
基于相关技术中，要求触控面板的周边边框更窄的设计要求。发明人发现在显示装置的触控薄膜上设置触控线路层时，在平行于触控面板板面方向上，触控线路除占用显示区域之外，触控线路用于与其他电路连接以传导信号的端部则会占用显示区域外围的区域，例如触控线路的端部会占用显示装置的遮光区，影响显示装置的窄边框设计。基于上述发现，本申请提供一种触控面板，在保证显示效果的情况下，降低触控线路端部占用的面积，实现触控面板窄边框设计。
本申请实施例提供的触控面板可应用于手机、电子阅读器、遥控器、个人计算机、笔记本电脑、触控加工设备、触控检测设备等具有触控交互形式的电子设备中。
如图1和图2所示，本申请一些实施例中触控面板100的结构示意图，触控面板100包括盖板110、触控薄膜120和转接电路板130。
如图2所示，盖板110包括可视区111以及设于可视区111外围的遮光区112，遮光区112设置有多个转接部113。盖板110可以为玻璃等材质制得的平板状的盖板110，盖板110可包括朝向用户的物侧以及与物侧相对设置的像侧，遮光区112位于像侧的表面设有遮光材料，遮光材料可平布于盖板110表面并全部覆盖遮光区112所在的区域，转接部113可采用印刷、镀附或粘贴等方式设于遮光材料表面。
触控薄膜120与盖板110层叠设置，如图2所示，触控薄膜120具有多条触控线路121及多个与触控线路121一一对应的连接端122，触控线路121端部延伸至触控薄膜120边缘并对应遮光区112，连接端122设置于触控线路121端部且与转接部113一一对应且电连接。具体地，触控线路121可包括用于感应触控信号的第一部分和用于传导信号的第二部分，连接端122与用于传导信号的触控线路121的第二部分电连接。触控薄膜120还包括基材123，多条触控线 路121设于基材123表面，并使触控线路121的第一部分与盖板110的可视区111对应设置，触控线路121的第二部分两端分别与第一部分和连接端122电连接，连接端122与盖板110的遮光区112对应设置。可以理解的，在其它一些实施例中，连接端122也可以是触控线路121的一部分。
如图3所示，转接电路板130与触控薄膜120共同设置于盖板110同侧、且转接电路板130位于触控薄膜120外围，转接电路板130对应遮光区112设置。转接电路板130包括电路板主体131及设置于电路板主体131表面的导电线路132，导电线路132与转接部113一一对应电连接，使得触控线路121感应的触控信号可依序经由连接端122、转接部113传导给导电线路132形成触控信号传导通路，导电线路132可用于电连接外部电路以将触控信号传导给外部电路进行分析。其中，相邻两路触控信号传导通路内的连接端122、转接部113和导电线路132之间存在间隔，避免连接端122、转接部113或导电线路132与相邻的连接端122、转接部113或导电线路132连接造成短路，影响信号传输。
根据本申请的触控面板100，将触控线路121产生的触控信号依序经触控薄膜12的连接端122、遮光区112内的转接部113、转接电路板130的导电线路132传递给外部电路。转接部113设于盖板110的遮光区112内，转接电路板130设于触控薄膜120外围，通过转接部113和转接电路板130上的导电线路132改变触控线路121与外部电路的连接方向，并通过转接电路板130上的导电线路132与外部电路连接，无需触控线路121端部向触控薄膜120外延伸后再与外部电路连接，节省触控线路121端部沿平行于盖板110板面方向占用的安装面积，便于触控面板100窄边框设计。
触控线路121设于基材123表面，位于可视区111内的触控线路121用于感应可视区111内的触摸情况产生触控信号，例如，可在位于可视区111内设置两层触控线路121，每层包括多条触控线路121，第一层触控线路121上设置间隔设置多个触控感应电极(图中未示出)，第二层触控线路121上间隔设置多个触控驱动电极(图中未示出)，在用户手指触摸的作用下使触控感应电极和触控驱动电极接触导通产生触控信号，将产生的触控信号经触控线路121端部传导至连接端122再依次传导至转接部113、导电线路132以及连接器140，再经连接器140传导至外部电路进行触控信号分析。
连接端122与触控线路121设于触控薄膜120的基材123表面，连接端122与触控线路121端部电连接，连接端122可选用与触控线路121相同的材质制得，例如，连接端122与触控线路121可由铜材质的原料设于触控薄膜120的基材123表面，并使连接端122与触控线路121一体设置，便于加工。连接端122也可选用与触控线路121不相同的材质制得，例如，触控线路121可选用铜 质材料设于触控薄膜120的基材123表面，连接端122则选用导电银浆设于触控薄膜120的基材123表面，使连接端122具有更优良的导电性，降低连接端122与转接部113之间的接触阻抗，提高连接端122与转接部113之间的导电稳定性。
在一些实施例中，转接部113可选用异方性导电胶，使得转接部113在满足电性导通连接端122与导电线路132的情况下，还便于通过转接部113直接与连接端122和导电线路132粘黏固定。转接部113也可选用含有导电性能良好的金属材料制得，例如转接部113可选用导电银浆制得，降低转接部113与连接端122、导电线路132之间的连接阻抗。
为进一步确保连接端122与转接部113、导电线路132与转接部113之间的电性连接稳定性，如图4所示，在一些实施例中，遮光区112还设有导电膜160，导电膜160可局部覆盖于转接部113表面，使导电膜160对应连接端122、导电线路132和转接部113设置，例如导电膜160可分两部分分别设于连接端122与转接部113之间、导电线路132与转接部113之间；或者导电膜160也可整面覆盖于转接部113表面。导电膜160可为异方性导电胶，在电性导通连接端122、导电线路132和转接部113的基础上，连接端122和导电线路132还可通过导电膜160与转接部113固定连接，防止转接部113与连接端122、导电线路132发生相对位移影响导电稳定性。例如，导电膜160可选用ACF导电胶、ACP导电胶等胶体，并采用印刷或涂布等方式设于转接部113上，根据转接部113与连接端122、转接部113与导电线路132之间的间隔还可对应调整导电膜160厚度，进一步提高连接稳定性。
当导电膜160整面覆盖于转接部113表面上时，如图4所示，导电膜160其中一端设于转接部113与连接端122之间使得转接部113的一端与连接端122电连接，导电膜160另一端设于转接部113与导电线路132端部之间使得转接部113的另一端与导电线路132电连接。进一步地，可使导电膜160边缘延伸至与遮光区112内的遮光材料或盖板110表面连接，使导电线路132、连接端122与导电膜160有足够的有效连接面积，提高连接稳定性。同时，在平行于盖板110板面的方向上，转接部113与连接端122、转接部113与导电线路132端部还可错位设置，通过扩大导电膜160的覆盖面积，确保转接部113、连接端122与导电线路132三者错位连接的情况下依然可以电性导通，使安装更为灵活。另外，导电膜160设于转接端和转接部113之间或设于转接部113与导电线路132之间，还可防止外部杂质介入转接部113与转接端、转接部113与导电线路132的连接结构之间，提高导电稳定性。在调整导电膜160边缘位置时，设于相邻两个转接部113上的导电膜160之间应存在间隔，避免相邻两个转接部113短接。
导电膜160在连接转接部113、连接端122和导电线路132的同时，还可与触控薄膜120的基材123表面、转接电路板130的电路板主体131等结构表面连接，导电膜160边缘延伸至与遮光区112内的遮光材料或盖板110表面连接，并通过调整导电膜160沿垂直盖板110板面方向的厚度，导电膜160还可为基材123和电路板主体131提供支撑，从而提高触控薄膜120与转接电路板130的连接稳定性。
当导电膜160局部覆盖于转接部113表面时，导电膜160可包括两部分，两部分导电膜160分别对应设于连接端122与转接部113之间、导电线路132与转接部113之间；导电膜160也可仅包括一部分，并设于连接端122与转接部113之间或设于导电线路132与转接部113之间，对应的连接端122与转接部113、导电线路132与转接部113之间未设导电膜160的部分可采用焊锡固定。
在一些实施例中，转接部113与连接端122、导电线路132端部还可分别焊锡固定连接，以实现转接部113、连接端122和导电线路132三者电性导通。为进一步提高安装稳定性，如图5和图6所示，盖板110的遮光区112内还设有粘结层114，盖板110通过同一层粘结层114与多个转接电路板130连接。组装时，可待触控薄膜120安装于盖板110上之后，在盖板110的遮光区112内设置一层粘结层114，使粘结层114覆盖多个转接部113并避开转接部113与导电线路132的连接位置，然后将多个转接电路板130的电路板主体131贴合于粘结层114上，使导电线路132端部与转接部113对位，再在导电线路132与转接部113之间的焊锡点115处设置焊锡，完成转接电路板130的安装。
转接电路板130上的导电线路132用于与外部电路连接，导电线路132可沿平行于盖板110板面方向延伸至与外部电路连接。为便于节省导电线路132在平行于盖板110板面方向占用的面积，导电线路132也可沿垂直于盖板110板面方向延伸至与外部电路连接。具体地，如图4和图5所示，电路板主体131包括朝向盖板110的第一表面1311及连接第一表面1311且位于远离触控薄膜120一侧的第二表面1312，导电线路132包括设置于第一表面1311且与转接部113电连接的第一导电端1321、连接第一导电端1321且自第一表面1311延伸至第二表面1312的连接线路1322、连接该连接线路1322且远离第一导电端1321的第二导电端1323，第二导电端1323用于电连接外部电路，通过将导电线路132分区段设置改变导电线路132的延伸方向，节省安装空间。加工转接电路板130时，可将第一导电端1321、连接线路1322和第二导电端1323三者一体设于电路板主体131表面。如图7所示，在其他一些实施例中，连接线路1322和第二导电端1323还可延伸至与电路板主体131第二表面1312相对的表面，使连接线路1322和第二导电端1323与触控薄膜120相对设置，并使连接线路1322、第二导电端1323与连接端122以及触控线路121间隔设置，使转接电路板130 的安装更为灵活。
如图5所示，第二表面1312设有绑定区1313，多个转接部113对应连接的多个导电线路132的第二导电端1323位于绑定区1313，转接电路板130还包括用于与外部电路连接的连接器140，连接器140设于绑定区1313，且连接器140与第二导电端1323连接，导电线路132通过连接器140与外部电路连接。绑定区1313在第二表面1312内的位置以及连接器140与外部电路的连接方向可根据实际安装需求设置，可选地，绑定区1313可设于第二表面1312远离盖板110的区域，连接器140设于绑定区1313，并使连接器140与外部电路连接的连接位置于远离盖板110的方向设置，便于连接器140与外部电路的连接。其中，外部电路可包括柔性电路板150，柔性电路板150其中一端与连接器140连接，柔性电路板150另一端再与其他控制电路连接，从而使触控线路121产生的触控信号依次经连接端122、转接部113、导电线路132、连接器140、柔性电路板150传导给控制电路对触控信号进行分析。
本申请实施例还提出一种电子设备，电子设备可以是任何具有操控功能的设备，例如：平板电脑、手机、电子阅读器、检测设备、加工设备车载设备、可穿戴设备等。具体地，电子设备包括本体和如上所述的触控面板100，触控面板100安装于电子设备的本体内，由于触控面板100可实现窄边框设计，安装有上述触控面板100的电子设备也实现窄边框设计，在有限的安装区域内提高可视区111的面积，提高用户使用体验。
本实施例的附图中相同或相似的标号对应相同或相似的部件；在本申请的描述中，需要理解的是，若有术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。

Claims (10)

  1. 一种触控面板，包括：
    盖板，包括可视区以及设于所述可视区外围的遮光区，所述遮光区设置有多个转接部；
    触控薄膜，与所述盖板层叠设置，所述触控薄膜具有多条触控线路及多个与所述触控线路对应的连接端，所述触控线路端部延伸至所述触控薄膜边缘并对应所述遮光区，所述连接端设置于所述触控线路端部与所述转接部一一对应且电连接；及
    转接电路板，与所述触控薄膜共同设置于所述盖板同侧并位于所述触控薄膜外围，所述转接电路板包括电路板主体及设置于所述电路板主体表面的多条导电线路，且多条所述导电线路与多个所述转接部一一对应电连接，使得所述触控线路端部依序经由所述连接端、所述转接部电连接所述导电线路，所述导电线路还用于电连接外部电路。
  2. 如权利要求1所述的触控面板，其中，所述遮光区还设有导电膜，所述导电膜其中一端设于所述转接部与所述连接端之间使得所述转接部的一端与所述连接端电连接，所述导电膜另一端设于所述转接部与所述导电线路端部之间使得所述转接部的另一端与所述导电线路电连接。
  3. 如权利要求2所述的触控面板，其中，所述导电膜为异方性导电胶。
  4. 如权利要求1所述的触控面板，其中，所述转接部与所述连接端、所述导电线路端部分别焊锡固定连接。
  5. 如权利要求4所述的触控面板，其中，所述盖板的所述遮光区内还设有粘结层，所述盖板通过同一层所述粘结层与多个所述转接电路板连接。
  6. 如权利要求1所述的触控面板，其中，所述触控薄膜还包括基材，所述触控线路设于所述基材表面；
    所述连接端与所述触控线路端部电连接，所述连接端为导电银浆连接端。
  7. 如权利要求1所述的触控面板，其中，所述转接部为设于所述盖板表面的导电银浆转接部。
  8. 如权利要求1所述的触控面板，其中，所述电路板主体包括对应所述盖板的第一表面及连接所述第一表面且位于远离所述触控薄膜一侧的第二表面，所述导电线路包括设置于所述第一表面且与所述转接部电连接的第一导电端、连接所述第一导电端且自所述第一表面延伸至所述第二表面的连接线路、连接所述连接线路且远离所述第一导电端的第二导电端，所述第二导电端用于电连接所述外部电路。
  9. 如权利要求8所述的触控面板，其中，所述第二表面设有绑定区，多个所述转接部对应连接的多个所述导电线路的第二导电端位于所述绑定区，所述转接电路板还包括用于与所述外部电路连接的连接器，所述连接器设于所述绑定区，且所述连接器与所述第二导电端连接。
  10. 一种电子设备，包括：
    如权利要求1-9中任一项所述的触控面板。
PCT/CN2020/138508 2020-09-28 2020-12-23 触控面板及电子设备 WO2022062216A1 (zh)

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CN109508122A (zh) * 2018-12-29 2019-03-22 业成科技（成都）有限公司 触控装置
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