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WO2022141627A1 - 触控显示装置 - Google Patents

触控显示装置 Download PDF

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Publication number
WO2022141627A1
WO2022141627A1 PCT/CN2021/070129 CN2021070129W WO2022141627A1 WO 2022141627 A1 WO2022141627 A1 WO 2022141627A1 CN 2021070129 W CN2021070129 W CN 2021070129W WO 2022141627 A1 WO2022141627 A1 WO 2022141627A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
flexible circuit
bridge
touch
area
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2021/070129
Other languages
English (en)
French (fr)
Inventor
王梓鉴
陆旭
龚庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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 BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US17/602,583 priority Critical patent/US11803265B2/en
Priority to PCT/CN2021/070129 priority patent/WO2022141627A1/zh
Priority to CN202180000002.9A priority patent/CN115039517B/zh
Publication of WO2022141627A1 publication Critical patent/WO2022141627A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display

Definitions

  • the present disclosure relates to the technical field of display product manufacturing, and in particular, to a touch display device.
  • the TIC touch IC of the traditional FMLOC (flexiblemulti-layeroncell, flexible multi-layer structure) screen is placed on the MFPC (main flexible circuit board), so it is necessary to introduce RX (sensing electrode signal line) and TX (driving electrode signal line) into The main flexible circuit board is connected to the touch IC, and the space occupied by the main flexible circuit board is increased due to the routing rules (for example, the adjacent layers cannot be repeatedly routed).
  • the present disclosure provides a touch display device to solve the problem that the main flexible circuit board occupies a large space.
  • a touch display device comprising a display panel, a main flexible circuit board connected to the display panel, and a first bridge flexible circuit board, the first bridge flexible circuit board A touch component including a touch IC is provided, the first bridge flexible circuit board includes a first binding area bound and connected to the display panel, and the first electrode signal line drawn from the display panel passes through the The first binding area is connected to the first bridging flexible circuit board, and is connected to the touch IC through the traces on the first bridging flexible circuit board.
  • the first bridge flexible circuit board is L-shaped, and includes a first part and a second part that are arranged to intersect, the first part is provided with the first binding area, and the touch element is arranged on the on the second part.
  • the second part is provided with a second binding area for binding connection with the main flexible circuit board
  • the main flexible circuit board is provided with a third binding area for binding connection with the display panel.
  • a binding area the second electrode signal line drawn from the display panel is connected to the main flexible circuit board through the third binding area, and is connected to the first bridge flexible circuit board through the second binding area connected, and connected with the touch IC through the traces on the first bridge flexible circuit board.
  • the end of the second part away from the first part is provided with a fourth binding area for binding and connection with the main flexible circuit board, and the main flexible circuit board is provided with a connection with the main circuit board.
  • the first connector, the power signal line drawn from the first connector is connected to the first bridge flexible circuit board through the fourth binding area, and the wiring on the first bridge flexible circuit board is passed through Connect with the touch IC.
  • the first connector is located on a side of the second part away from the first part.
  • the display panel includes a central display area and a wiring area located around the central display area, and the wiring area includes a first area located on a first side of the central display area along a first direction,
  • the second binding area and the third binding area are both disposed in the first area, and the second binding area and the third binding area are in a direction perpendicular to the first direction Arranged above, the extension direction of the first portion of the first bridge flexible circuit board is parallel to the first direction.
  • a distance between the first binding area and the second binding area parallel to the first direction is greater than or equal to 1 mm.
  • the first electrode signal line is a sensing electrode signal line
  • the second electrode signal line is a driving electrode signal line
  • both the main flexible circuit board and the first bridge flexible circuit board are double-layer boards.
  • the first bridging flexible circuit board is U-shaped, and includes a first connecting portion and a second connecting portion and a third connecting portion located on opposite sides of the first connecting portion;
  • the touch control element is arranged on the first connection part, the second connection part is arranged with the first binding area, and the third connection part is arranged with a fifth binding area for connecting with the The display panel is bound and connected, the second electrode signal line drawn from the display panel is connected to the first bridge flexible circuit board through the fifth binding area, and the wiring on the first bridge flexible circuit board is passed through. Connect with the touch IC.
  • a second connector connected to the main circuit board is provided on the main flexible circuit board, and the touch display device further includes a second bridge flexible circuit board;
  • One end of the second bridging flexible circuit board is bound and connected to the first connecting portion of the first bridging flexible circuit board, and the other end of the second bridging flexible circuit board is bound to the main flexible circuit board connection, the power signal line drawn from the second connector is bound and connected to the first bridge flexible circuit board through the second bridge flexible circuit board, and is connected to the first bridge flexible circuit board through the traces on the first bridge flexible circuit board.
  • the touch IC is connected.
  • the second connector is located on a side of the third connecting portion away from the second connecting portion.
  • the extending direction of the second bridge flexible circuit board is parallel to the extending direction of the second connecting portion.
  • the first electrode signal line is a sensing electrode signal line
  • the second electrode signal line is a driving electrode signal line
  • the length of the first bridging flexible circuit board in the first direction is less than the length of the main flexible circuit board in the first direction, and the first bridging flexible circuit board is in the same direction as the The length in the second direction intersecting the first direction is smaller than the length of the main flexible circuit board in the second direction.
  • the beneficial effects of the present disclosure are: through the setting of the first bridge flexible circuit board, the touch IC is arranged on the first bridge flexible circuit board, and the first electrode signal line is directly introduced into the first bridge flexible circuit board without going through the main bridge flexible circuit board.
  • the flexible circuit board reduces the wiring space on the main flexible circuit board, thereby reducing the space occupied by the main flexible circuit board.
  • FIG. 1 is a schematic structural diagram 1 of a touch display device according to an embodiment of the present disclosure
  • FIG. 2 is a second schematic structural diagram of a touch display device according to an embodiment of the present disclosure.
  • a touch display device which includes a display panel 1 , a main flexible circuit board 2 connected to the display panel 1 , and a first bridge flexible circuit board 3 .
  • the first bridge flexible circuit board 3 includes a first binding area bound and connected to the display panel 1, and the first electrode signal lines 10 drawn from the display panel 1 pass through The first binding area is connected to the first bridge flexible circuit board 3 , and is connected to the touch IC 4 through the wiring on the first bridge flexible circuit board 3 .
  • a multi-layer board structure is adopted, generally a four-layer board or a six-layer board is used, and it is limited by the wiring of the driving electrode signal line 20 and the inductive electric limit line and the like.
  • each signal line needs to be connected through a via hole.
  • Each signal line has a certain width, and the via hole also occupies a certain space. Considering that each signal line has a via hole, the space will be doubled. This will greatly increase the difficulty of layout (layout) of the main flexible circuit board 2, and is forced to increase the Y-direction width of the main flexible circuit board 2.
  • the touch IC 4 is disposed on the first bridge flexible circuit board 3
  • the first electrode signal line 10 is directly introduced into the first bridge flexible circuit board 3 and Without passing through the main flexible circuit board 2, the wiring space on the main flexible circuit board 2 is reduced.
  • the first bridging flexible circuit board 3 can be set as a double-layered board.
  • the main flexible circuit board 2 can also be set as a double-layer board to reduce costs.
  • the first electrode signal line is the sensing electrode signal line Rx, but it is not limited thereto.
  • the first bridging flexible circuit board 3 is L-shaped, and includes a first part 31 and a second part 32 that are arranged to intersect, and the first part 31 is provided with the first binding area, so The touch components are arranged on the second part 32 .
  • the angle between the first part and the second part can be set according to actual needs.
  • the first part and the second part are arranged perpendicularly, But not limited to this.
  • the second part 32 is provided with a second binding area for binding and connection with the main flexible circuit board 2
  • the main flexible circuit board 2 is provided with a second binding area for binding with the display
  • the third binding area of the panel 1 is bound and connected, the second electrode signal line 20 drawn from the display panel 1 is connected to the main flexible circuit board 2 through the third binding area, and is connected to the main flexible circuit board 2 through the second binding area.
  • the fixed area is connected to the first bridge flexible circuit board 3 and is connected to the touch IC 4 through the wiring on the first bridge flexible circuit board 3 .
  • the touch IC 4 is arranged on the first bridge flexible circuit board 3 , and the second electrode signal line 20 needs to be introduced into the first bridge flexible circuit board 3 through the main flexible circuit board 2 to connect with the contactor. Control IC 4 connection.
  • the second electrode signal line 20 is the driving electrode signal line Tx, but it is not limited thereto.
  • the second part 32 is provided with a fourth binding area for binding and connection with the main flexible circuit board 2
  • the main flexible circuit board 2 is provided with a fourth binding area for connection with the main circuit board
  • the first connector 5, the power signal line 30 drawn from the first connector 5 is connected to the first bridge flexible circuit board 3 through the fourth binding area, and through the first bridge flexible circuit board
  • the traces on 3 are connected to the touch IC 4 .
  • the first connector 5 is located on the side of the second part 32 away from the first part 31 . Avoid increasing the Y-direction space of the main flexible circuit board 2 .
  • the first connector 5 is a B2B connector (Board to Board, for connecting different circuit boards).
  • the display panel 1 includes a central display area and a wiring area located around the central display area, and the wiring area includes a wiring area located along a first direction (refer to the Y direction in FIG. 1 ).
  • the first area on the first side of the central display area, the second binding area and the third binding area are all arranged in the first area, and the second binding area and the third binding area are all arranged in the first area.
  • the three binding areas are arranged in a direction perpendicular to the first direction (refer to the X direction in FIG. 1 ), and the first bridging direction of the extension of the first portion 31 of the flexible circuit board 3 and the first direction parallel.
  • the first part is arranged parallel to the first direction
  • the second part is arranged perpendicular to the first direction
  • the first binding area is arranged on the first part in the One end of the second portion away from the second portion in the first direction
  • the second binding area is disposed at one end of the second portion away from the first portion in a direction perpendicular to the first direction.
  • the distance between the first binding area and the second binding area in a direction parallel to the first direction is greater than or equal to 1 mm.
  • connection between the first bridging flexible circuit board 3 and the display panel 1 , the connection between the first bridging flexible circuit board 3 and the main flexible circuit board 2 , the connection between the first bridging flexible circuit board 3 and the main flexible circuit board 2 , and the The connection between the circuit board 2 and the display panel 1 can be realized by ACF (Anisotropic Conductive Film), or can be realized by solder paste.
  • the first bridging flexible circuit board 3 and the main flexible circuit board 2 are first bound and connected, and then the first bridging flexible circuit board 3 is bound and connected together by a synchronous process.
  • the bridge flexible circuit board 3 and the main flexible circuit board 2 are bound and connected to the display panel 1 .
  • the heat-affected zone of the pressure head may cover the traces of the first bridge flexible circuit board 3, but the flexible circuit When soldering devices, the board needs to undergo reflow soldering at a high temperature of 190 degrees, but the temperature when the main flexible circuit board 2 is bonded to the display panel 1 (bonding connection) is far less than 190 degrees, that is, the first
  • the bridging flexible circuit board 3 has an impact, and is designed according to the total width of the main flexible circuit board 2 and the first bridging flexible circuit board 3 when making the main flexible circuit board 2 and the first bridging flexible circuit board 3 That's it.
  • the first bridging flexible circuit board 3 is U-shaped, and includes a first connecting portion 33 , a second connecting portion 34 and a third connecting portion located on opposite sides of the first connecting portion 33 .
  • the touch components are disposed on the first connecting portion 33 , the second connecting portion 34 is disposed with the first binding area, and the third connecting portion 35 is disposed with a fifth binding area for It is bound and connected to the display panel 1, and the second electrode signal line 20 drawn from the display panel 1 is connected to the first bridge flexible circuit board 3 through the fifth binding area, and is connected to the first bridge through the first bridge
  • the traces on the flexible circuit board 3 are connected to the touch IC 4 .
  • the first electrode signal line 10 is a sensing electrode signal line
  • the second electrode signal line is a driving electrode signal line, but it is not limited thereto.
  • both the sensing electrode signal line and the driving electrode signal line are directly introduced into the first bridge flexible circuit board 3 without passing through the main flexible circuit board 2, which greatly reduces the running distance of the main flexible circuit board 2.
  • the main flexible circuit board 2 can be made extremely narrow to provide more space for the customer's battery compartment.
  • the sensing electrode signal line is connected to the touch IC 4 through the wiring on the second connecting portion 34
  • the driving electrode signal line is connected to the touch IC 4 through the wiring on the third connecting portion 35 .
  • the touch IC 4 is connected without overlapping and without interfering with each other.
  • sensing electrode signal lines and the driving electrode signal lines are directly introduced into the first bridge flexible circuit board 3, and the sensing electrode signal lines and the driving electrode signal lines will not interfere with other wirings on the main flexible circuit board 2. , reducing the difficulty of wiring on the main flexible circuit board 2 .
  • the display panel 1 includes a central display area and a wiring area around the central display area, and the wiring area includes a first direction (refer to the Y direction in FIG. 1 ) at the center
  • the first area on the first side of the display area, the second binding area and the fifth binding area are all set in the first area, and the second binding area and the fifth binding area are The regions are arranged in a direction perpendicular to the first direction (refer to the X direction in FIG.
  • the second binding region and the fifth binding region are located in the main flexible
  • the extending direction of the first connecting portion 33 is perpendicular to the first direction
  • the second connecting portion 34 is connected to the third
  • the parts 35 are all disposed parallel to the first direction
  • the first binding area is disposed at one end of the second connecting part 34 away from the first connecting part 33 in the first direction
  • the first binding area is The five binding areas are located at one end of the third connecting portion 35 away from the first connecting portion 33 in the first direction.
  • the main flexible circuit board 2 is provided with a second connector 7 connected to the main circuit board, and the touch display device further includes a second bridge flexible circuit board 6;
  • One end of the second bridging flexible circuit board 6 is bound and connected to the first connecting portion 33 of the first bridging flexible circuit board 3 , and the other end of the second bridging flexible circuit board 6 is connected to the main flexible circuit board 3 .
  • the circuit board 2 is bound and connected, and the power signal line 30 drawn from the second connector 7 is bound and connected to the first bridge flexible circuit board 3 through the second bridge flexible circuit board 6 , and is connected through the first bridge flexible circuit board 3 .
  • the traces on the bridge flexible circuit board 3 are connected to the touch IC 4 .
  • the first bridge flexible circuit board 3 shown in FIG. 1 is L-shaped.
  • the first bridge flexible circuit board 3 shown in FIG. 2 is U-shaped.
  • two binding areas are set on the main flexible circuit board 2 , and one binding area is used for For the connection between the driving electrode signal line 20 and the first bridge flexible circuit board 3, a binding area is used for the power signal line 30 to be connected with the first bridge flexible circuit board 3, and only the sensing electrode signal line 10 is directly connected.
  • the first bridge flexible circuit board 3 is introduced.
  • the main flexible circuit board 2 and the driving electrode signal lines 20 and the sensing electrode signal lines 10 are directly introduced into the first bridge flexible circuit board 3 without passing through the main flexible circuit board 3 .
  • the flexible circuit board 2, and the main flexible circuit board 2 only needs to set a binding area for connecting with the second bridge circuit board.
  • the setting method in FIG. 2 is relative to the setting method in FIG. 1, The wiring space of the main flexible circuit board 2 is further reduced.
  • the second connector 7 is located on the side of the third connecting portion 35 away from the second connecting portion 34 .
  • the second connector 7 is disposed on the side of the third connecting portion 35 away from the second connecting portion 34 , so as to prevent the setting of the second connector 7 from occupying the Y-direction space of the main flexible circuit board 2 .
  • the second connector 7 is a B2B connector (Board to Board, used for connecting different circuit boards).
  • the extending direction of the second bridge flexible circuit board 6 is parallel to the extending direction of the second connecting portion 34 .
  • the length of the first bridging flexible circuit board 3 in the first direction is smaller than the length of the main flexible circuit board 2 in the first direction, and the first bridging flexible circuit board 3
  • the length of the circuit board 3 in the second direction intersecting with the first direction is smaller than the length of the main flexible circuit board 2 in the second direction.

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

Abstract

本公开涉及一种触控显示装置，包括显示面板和与显示面板连接的主柔性线路板和第一桥接柔性线路板，所述第一桥接柔性线路板上设置有包括触控IC的触控元器件，所述第一桥接柔性线路板包括与所述显示面板绑定连接的第一绑定区，所述显示面板引出的第一电极信号线通过所述第一绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。

Description

触控显示装置 技术领域
本公开涉及显示产品制作技术领域，尤其涉及一种触控显示装置。
背景技术
电子产品更新日新月异，如何将电池容量做大、提高待机时间、缩减成本等难点更是各个厂商关注的重点。传统FMLOC(flexiblemulti-layeroncell,柔性多层结构)屏幕的TIC(触控IC)放置于MFPC(主柔性电路板)上，因此需将RX(感应电极信号线)、TX(驱动电极信号线)引入主柔性线路板，以接入触控IC，受限于走线规则(例如，相邻层不可重复走线)会增大主柔性线路板所占空间。
发明内容
为了解决上述技术问题，本公开提供一种触控显示装置，解决主柔性线路板占用空间大的问题。
为了达到上述目的，本公开采用的技术方案是：一种触控显示装置，包括显示面板和与显示面板连接的主柔性线路板和第一桥接柔性线路板，所述第一桥接柔性线路板上设置有包括触控IC的触控元器件，所述第一桥接柔性线路板包括与所述显示面板绑定连接的第一绑定区，所述显示面板引出的第一电极信号线通过所述第一绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
可选的，所述第一桥接柔性线路板呈L形，包括相交设置的第一部分和第二部分，所述第一部分设置有所述第一绑定区，所述触控元器件设置于所述第二部分上。
可选的，所述第二部分设置有用于与所述主柔性线路板绑定连接的第二绑定区，所述主柔性线路板上设置有用于与所述显示面板绑定连接的第三绑定区，所述显示面板引出的第二电极信号线通过所述第三绑定区与所述主柔性线路板连接，并通过所述第二绑定区与所述第一桥接柔性线路板连接，并通过所述 第一桥接柔性线路板上的走线与所述触控IC连接。
可选的，所述第二部分远离所述第一部分的一端设置有用于与所述主柔性线路板绑定连接的第四绑定区，所述主柔性线路板上设置有与主电路板连接的第一连接器，所述第一连接器引出的电源信号线通过所述第四绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
可选的，所述第一连接器位于所述第二部分远离所述第一部分的一侧。
可选的，所述显示面板包括中心显示区和位于所述中心显示区周围的走线区，所述走线区包括沿第一方向位于所述中心显示区的第一侧的第一区域，所述第二绑定区和所述第三绑定区均设置于所述第一区域，且所述第二绑定区和所述第三绑定区在垂直于所述第一方向的方向上排列，所述第一桥接柔性线路板的所述第一部分的延伸方向与所述第一方向平行。
可选的，所述第一绑定区和所述第二绑定区在平行于所述第一方向上的距离大于或等于1mm。
可选的，所述第一电极信号线为感应电极信号线，所述第二电极信号线为驱动电极信号线。
可选的，所述主柔性线路板和所述第一桥接柔性线路板均为双层板。
可选的，所述第一桥接柔性线路板呈U形，包括第一连接部和位于所述第一连接部相对的两侧的第二连接部和第三连接部；
所述触控元器件设置于所述第一连接部，所述第二连接部设置有所述第一绑定区，所述第三连接部设置有第五绑定区，用于与所述显示面板绑定连接，所述显示面板引出的第二电极信号线通过所述第五绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
可选的，所述主柔性线路板上设置有与主电路板连接的第二连接器，所述触控显示装置还包括第二桥接柔性线路板；
所述第二桥接柔性线路板的一端与所述第一桥接柔性线路板的所述第一连接部绑定连接，所述第二桥接柔性线路板的另一端与所述主柔性线路板绑定连接，所述第二连接器引出的电源信号线通过所述第二桥接柔性线路板与所述第一桥接柔性线路板绑定连接，并通过所述第一桥接柔性线路板上的走线与所 述触控IC连接。
可选的，所述第二连接器位于所述第三连接部远离所述第二连接部的一侧。
可选的，所述第二桥接柔性线路板的延伸方向与所述第二连接部的延伸方向平行。
可选的，所述第一电极信号线为感应电极信号线，所述第二电极信号线为驱动电极信号线。
可选的，所述第一桥接柔性线路板在所述第一方向上的长度小于所述主柔性线路板在所述第一方向上的长度，所述第一桥接柔性线路板在与所述第一方向相交的第二方向上的长度小于所述主柔性线路板在所述第二方向上的长度。
本公开的有益效果是：通过第一桥接柔性线路板的设置，将触控IC设置于第一桥接柔性线路板上，将第一电极信号线直接引入第一桥接柔性线路板，而不经过主柔性线路板，减少了主柔性线路板上的布线空间，从而减小了主柔性线路板所占空间。
附图说明
图1表示本公开实施例中触控显示装置结构示意图一；
图2表示本公开实施例中触控显示装置结构示意图二。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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公开和简化描述，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，因此不能理解为对本公开的限制。此外，术语“第一”、“第二”、“第 三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
本实施例中提供一种触控显示装置，包括显示面板1和与显示面板1连接的主柔性线路板2和第一桥接柔性线路板3，所述第一桥接柔性线路板3上设置有包括触控IC 4的触控元器件，所述第一桥接柔性线路板3包括与所述显示面板1绑定连接的第一绑定区，所述显示面板1引出的第一电极信号线10通过所述第一绑定区与所述第一桥接柔性线路板3连接，并通过所述第一桥接柔性线路板3上的走线与所述触控IC 4连接。
相关技术中，由于主柔性线路板2上布线过多，采用多层板结构，一般采用四层板或六层板，且受限于驱动电极信号线20和感应电极限号线等的走线规则，例如，相邻层不能重复布线，感应电极信号线10Rx以及驱动电极信号线20Tx需在相邻层与其他走线垂直，不可平行走线或者斜交，增加成本且增加主柔性线路板2的布线空间。且每条信号线均需通过过孔连接，每条信号线是具有一定的宽度的，过孔也是占据一定的空间的，考虑每条信号线均打过孔的话会将此空间成倍放大，会大大增加主柔性线路板2的layout(布局)难度，被迫增加主柔性线路板2Y向宽度。
本实施例中，通过第一桥接柔性线路板3的设置，将触控IC 4设置于第一桥接柔性线路板3上，将第一电极信号线10直接引入第一桥接柔性线路板3，而不经过主柔性线路板2，减少了主柔性线路板2上的布线空间。
且由于所述第一桥接柔性线路板3上的信号线单一，可以将第一桥接柔性线路板3设置为双层板，所述主柔性线路板2由于减少了第一电极信号线10，减少了干扰，所述主柔性线路板2也可以设置为双层板，降低成本。
本实施例中示例性的，所述第一电极信号线为感应电极信号线Rx，但并不以此为限。
本实施例中示例性的，所述第一桥接柔性线路板3呈L形，包括相交设置的第一部分31和第二部分32，所述第一部分31设置有所述第一绑定区，所述触控元器件设置于所述第二部分32上。
本实施例中，所述第一部分和所述第二部分之间的角度可以根据实际需要设定，本实施例中一具体实施方式中，所述第一部分和所述第二部分相垂直设置，但并不以此为限。
本实施例中示例性的，所述第二部分32设置有用于与所述主柔性线路板2绑定连接的第二绑定区，所述主柔性线路板2上设置有用于与所述显示面板1绑定连接的第三绑定区，所述显示面板1引出的第二电极信号线20通过所述第三绑定区与所述主柔性线路板2连接，并通过所述第二绑定区与所述第一桥接柔性线路板3连接，并通过所述第一桥接柔性线路板3上的走线与所述触控IC 4连接。
所述触控IC 4设置于所述第一桥接柔性线路板3上，第二电极信号线20需要经过所述主柔性线路板2引入所述第一桥接柔性线路板3，以与所述触控IC 4连接。
本实施例中，所述第二电极信号线20为驱动电极信号线Tx，但并不以此为限。
本实施例中示例性的，所述第二部分32设置有用于与所述主柔性线路板2绑定连接的第四绑定区，所述主柔性线路板2上设置有与主电路板连接的第一连接器5，所述第一连接器5引出的电源信号线30通过所述第四绑定区与所述第一桥接柔性线路板3连接，并通过所述第一桥接柔性线路板3上的走线与所述触控IC 4连接。
本实施例中示例性的，所述第一连接器5位于所述第二部分32远离所述第一部分31的一侧。避免增大主柔性线路板2的Y向空间。
本实施例中示例性的，所述第一连接器5为B2B连接器(Board to Board，板到板，用于连接不同的电路板)。
本实施例中示例性的，所述显示面板1包括中心显示区和位于所述中心显示区周围的走线区，所述走线区包括沿第一方向(参考图1中的Y方向)位于所述中心显示区的第一侧的第一区域，所述第二绑定区和所述第三绑定区均设置于所述第一区域，且所述第二绑定区和所述第三绑定区在垂直于所述第一方向的方向(参考图1中的X方向)上排列，所述第一桥接柔性线路板3的所述第一部分31的延伸方向与所述第一方向平行。
本实施例中，为了便于布线，所述第一部分平行于所述第一方向设置，所述第二部分垂直于所述第一方向设置，所述第一绑定区设置于所述第一部分在第一方向上远离所述第二部分的一端，所述第二绑定区设置于所述第二部分在 垂直于所述第一方向的方向上远离所述第一部分的一端。
本实施例中示例性的，所述第一绑定区和所述第二绑定区在平行于所述第一方向上的距离大于或等于1mm。
本实施例中示例性的，所述第一桥接柔性线路板3与所述显示面板1的连接、所述第一桥接柔性线路板3与所述主柔性线路板2的连接、所述主柔性线路板2与所述显示面板1的连接均可通过ACF(Anisotropic Conductive Film)实现，也可以采用锡膏实现。
本实施例中示例性的，在制作时，先将所述第一桥接柔性线路板3与所述主柔性线路板2绑定连接，然后采用同步工艺将绑定连接在一起的所述第一桥接柔性线路板3、所述主柔性线路板2与所述显示面板1绑定连接。
需要说明的是，在将所述主柔性线路板2与所述显示面板1压合时，压头的热影响区可能会涵盖到所述第一桥接柔性线路板3的走线，但柔性线路板在焊接器件时需经过190度的高温进行回流焊，但将所述主柔性线路板2与显示面板1Bonding(绑定连接)时的温度远远小于190度，即不会对所述第一桥接柔性线路板3产生影响，在制作所述主柔性线路板2与所述第一桥接柔性线路板3时根据所述主柔性线路板2与所述第一桥接柔性线路板3总共的宽度设计即可。
本实施例中示例性的，所述第一桥接柔性线路板3呈U形，包括第一连接部33和位于所述第一连接部33相对的两侧的第二连接部34和第三连接部35；
所述触控元器件设置于所述第一连接部33，所述第二连接部34设置有所述第一绑定区，所述第三连接部35设置有第五绑定区，用于与所述显示面板1绑定连接，所述显示面板1引出的第二电极信号线20通过所述第五绑定区与所述第一桥接柔性线路板3连接，并通过所述第一桥接柔性线路板3上的走线与所述触控IC 4连接。
本实施例中，所述第一电极信号线10为感应电极信号线，所述第二电极信号线为驱动电极信号线，但并不以此为限。
采用上述技术方案，将感应电极信号线和驱动电极信号线均直接引入所述第一桥接柔性线路板3，而不经过所述主柔性线路板2，大大减小了主柔性线 路板2的走线空间，可将主柔性线路板2做至极窄，为客户电池仓提供更大的空间。且所述感应电极信号线通过位于所述第二连接部34上的走线与所述触控IC 4连接，所述驱动电极信号线通过位于所述第三连接部35上的走线与所述触控IC 4连接，不会产生交叠，互不干扰。且将感应电极信号线和驱动电极信号线均直接引入所述第一桥接柔性线路板3，感应电极信号线和驱动电极信号线不会对所述主柔性线路板2上的其他走线造成干扰，降低了所述主柔性线路板2上的布线难度。
本实施例中，所述显示面板1包括中心显示区和位于所述中心显示区周围的走线区，所述走线区包括沿第一方向(参考图1中的Y方向)位于所述中心显示区的第一侧的第一区域，所述第二绑定区和所述第五绑定区均设置于所述第一区域，且所述第二绑定区和所述第五绑定区在垂直于所述第一方向的方向(参考图1中的X方向)上排列，且在第一方向上，所述第二绑定区和所述第五绑定区位于所述主柔性线路板2与所述第一区域绑定连接的绑定区的两侧，所述第一连接部33的延伸方向与所述第一方向相垂直，所述第二连接部34和第三连接部35均与所述第一方向相平行设置，所述第一绑定区设置于所述第二连接部34在所述第一方向上远离所述第一连接部33的一端，所述第五绑定区位于所述第三连接部35在所述第一方向上远离所述第一连接部33的一端。
本实施例中示例性的，所述主柔性线路板2上设置有与主电路板连接的第二连接器7，所述触控显示装置还包括第二桥接柔性线路板6；
所述第二桥接柔性线路板6的一端与所述第一桥接柔性线路板3的所述第一连接部33绑定连接，所述第二桥接柔性线路板6的另一端与所述主柔性线路板2绑定连接，所述第二连接器7引出的电源信号线30通过所述第二桥接柔性线路板6与所述第一桥接柔性线路板3绑定连接，并通过所述第一桥接柔性线路板3上的走线与所述触控IC 4连接。
本实施例中，图1中表示的第一桥接柔性线路板3呈L形。图2中所示的第一桥接柔性线路板3呈U形，图1中所示的触控显示装置中，所述主柔性线路板2上设置了两个绑定区，一个绑定区用于驱动电极信号线20与所述第一桥接柔性线路板3的连接，一个绑定区用于电源信号线30与所述第一桥 接柔性线路板3连接，且仅仅将感应电极信号线10直接引入所述第一桥接柔性线路板3。图2中所示的触控显示装置中，所述主柔性线路板2同时件驱动电极信号线20和感应电极信号线10直接引入所述第一桥接柔性线路板3，而不经过所述主柔性线路板2，且所述主柔性线路板2只需设定一个绑定区用于与所述第二桥接线路板连接即可，图2中的设置方式相对于图1中的设置方式，进一步的减小了主柔性线路板2的布线空间。
本实施例中示例性的，所述第二连接器7位于所述第三连接部35远离所述第二连接部34的一侧。
所述第二连接器7设置于所述第三连接部35远离所述第二连接部34的一侧，避免所述第二连接器7的设置占用所述主柔性线路板2的Y向空间。
本实施例中示例性的，所述第二连接器7为B2B连接器(Board to Board，板到板，用于连接不同的电路板)。
本实施例中示例性的，所述第二桥接柔性线路板6的延伸方向与所述第二连接部34的延伸方向平行。
本实施例中示例性的，所述第一桥接柔性线路板3在所述第一方向上的长度小于所述主柔性线路板2在所述第一方向上的长度，所述第一桥接柔性线路板3在与所述第一方向相交的第二方向上的长度小于所述主柔性线路板2在所述第二方向上的长度。
以上所述为本公开较佳实施例，需要说明的是，对于本领域普通技术人员来说，在不脱离本公开所述原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本公开保护范围。

Claims (15)

  1. 一种触控显示装置，其中，包括显示面板和与显示面板连接的主柔性线路板和第一桥接柔性线路板，所述第一桥接柔性线路板上设置有包括触控IC的触控元器件，所述第一桥接柔性线路板包括与所述显示面板绑定连接的第一绑定区，所述显示面板引出的第一电极信号线通过所述第一绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
  2. 根据权利要求1所述的触控显示装置，其中，所述第一桥接柔性线路板呈L形，包括相交设置的第一部分和第二部分，所述第一部分设置有所述第一绑定区，所述触控元器件设置于所述第二部分上。
  3. 根据权利要求2所述的触控显示装置，其中，所述第二部分设置有用于与所述主柔性线路板绑定连接的第二绑定区，所述主柔性线路板上设置有用于与所述显示面板绑定连接的第三绑定区，所述显示面板引出的第二电极信号线通过所述第三绑定区与所述主柔性线路板连接，并通过所述第二绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
  4. 根据权利要求2所述的触控显示装置，其中，所述第二部分远离所述第一部分的一端设置有用于与所述主柔性线路板绑定连接的第四绑定区，所述主柔性线路板上设置有与主电路板连接的第一连接器，所述第一连接器引出的电源信号线通过所述第四绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
  5. 根据权利要求4所述的触控显示装置，其中，所述第一连接器位于所述第二部分远离所述第一部分的一侧。
  6. 根据权利要求3所述的触控显示装置，其中，所述显示面板包括中心显示区和位于所述中心显示区周围的走线区，所述走线区包括沿第一方向位于所述中心显示区的第一侧的第一区域，所述第二绑定区和所述第三绑定区均设置于所述第一区域，且所述第二绑定区和所述第三绑定区在垂直于所述第一方向的方向上排列，所述第一桥接柔性线路板的所述第一部分的延伸方向与所述 第一方向平行。
  7. 根据权利要求6所述的触控显示装置，其中，所述第一绑定区和所述第二绑定区在平行于所述第一方向上的距离大于或等于1mm。
  8. 根据权利要求3所述的触控显示装置，其中，所述第一电极信号线为感应电极信号线，所述第二电极信号线为驱动电极信号线。
  9. 根据权利要求1所述的触控显示装置，其中，所述主柔性线路板和所述第一桥接柔性线路板均为双层板。
  10. 根据权利要求1所述的触控显示装置，其中，所述第一桥接柔性线路板呈U形，包括第一连接部和位于所述第一连接部相对的两侧的第二连接部和第三连接部；
    所述触控元器件设置于所述第一连接部，所述第二连接部设置有所述第一绑定区，所述第三连接部设置有第五绑定区，用于与所述显示面板绑定连接，所述显示面板引出的第二电极信号线通过所述第五绑定区与所述第一桥接柔性线路板连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
  11. 根据权利要求10所述的触控显示装置，其中，所述主柔性线路板上设置有与主电路板连接的第二连接器，所述触控显示装置还包括第二桥接柔性线路板；
    所述第二桥接柔性线路板的一端与所述第一桥接柔性线路板的所述第一连接部绑定连接，所述第二桥接柔性线路板的另一端与所述主柔性线路板绑定连接，所述第二连接器引出的电源信号线通过所述第二桥接柔性线路板与所述第一桥接柔性线路板绑定连接，并通过所述第一桥接柔性线路板上的走线与所述触控IC连接。
  12. 根据权利要求11所述的触控显示装置，其中，所述第二连接器位于所述第三连接部远离所述第二连接部的一侧。
  13. 根据权利要求11所述的触控显示装置，其中，所述第二桥接柔性线路板的延伸方向与所述第二连接部的延伸方向平行。
  14. 根据权利要求10所述的触控显示装置，其中，所述第一电极信号线为感应电极信号线，所述第二电极信号线为驱动电极信号线。
  15. 根据权利要求1-14任一项所述的触控显示装置，其中，所述第一桥接 柔性线路板在所述第一方向上的长度小于所述主柔性线路板在所述第一方向上的长度，所述第一桥接柔性线路板在与所述第一方向相交的第二方向上的长度小于所述主柔性线路板在所述第二方向上的长度。
PCT/CN2021/070129 2021-01-04 2021-01-04 触控显示装置 Ceased WO2022141627A1 (zh)

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