WO2020192591A1 - 触控模组及其驱动方法、触控显示装置 - Google Patents

触控模组及其驱动方法、触控显示装置 Download PDF

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Publication number
WO2020192591A1
WO2020192591A1 PCT/CN2020/080493 CN2020080493W WO2020192591A1 WO 2020192591 A1 WO2020192591 A1 WO 2020192591A1 CN 2020080493 W CN2020080493 W CN 2020080493W WO 2020192591 A1 WO2020192591 A1 WO 2020192591A1
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Prior art keywords
touch
data selection
signal line
selection unit
line
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PCT/CN2020/080493
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English (en)
French (fr)
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朱元章
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US17/048,308 priority Critical patent/US11379065B2/en
Publication of WO2020192591A1 publication Critical patent/WO2020192591A1/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto

Definitions

  • the present disclosure relates to the field of touch technology, in particular to a touch module and a driving method thereof, and a touch display device.
  • the touch trace in a touch screen is composed of a transmission signal line (Tx) and a receiving signal line (Rx). Due to the large number of transmission signal lines and receiving signal lines, taking a mobile phone as an example, Tx is generally no less than 16 Root, Rx is generally no less than 32. In this way, the remaining input/output (I/O) ports of the main driver integrated circuit (main IC) in the touch display screen are not enough to process Tx and Rx transmissions. Therefore, an additional driver chip connected to Tx and Rx is required.
  • Tx transmission signal line
  • Rx receiving signal line
  • the embodiments of the present disclosure provide a touch module, a driving method thereof, and a touch display device.
  • the specific solutions are as follows:
  • an embodiment of the present disclosure provides a touch module, wherein the touch module has a touch area and a non-touch area, and the touch module includes: extending from the touch area to Touch signal lines in the non-touch area, and n data selection units connected to the touch signal lines extending to the non-touch area;
  • Each of the data selection units is connected to m touch signal lines, m and n are both positive integers, and m is greater than or equal to 2;
  • the data selection unit includes m switch transistors and a data selection line; wherein, each switch transistor corresponds to one touch signal line one by one, and the control terminal of each switch transistor is connected to the time-sharing driving power supply
  • the level signal line of the flat signal is connected, the first end of each switch transistor is connected to the corresponding touch signal line, and the second end of each switch transistor is connected to the data selection line.
  • the touch signal line includes: a transmission signal line and a reception signal line; the transmission signal line and/or the reception signal line and the Data selection unit connection.
  • all the switching transistors are N-type transistors or all P-type transistors.
  • the level signal lines connected to different switch transistors in the same data selection unit are different, and the mth switch transistor in each data selection unit Both are connected to the m-th level signal line.
  • a touch display device includes a display panel, the above-mentioned touch module provided in the embodiment of the present disclosure, and a driving chip for driving the display panel and the touch module, The driving chip is connected to the data selection line.
  • the touch display device provided by the embodiment of the present disclosure further includes a flexible circuit board
  • the data selection unit and the driving chip are both located in the frame area of the display panel; the touch signal line is connected to the first end of the switch transistor in the data selection unit through the flexible circuit board.
  • the touch signal line is sequentially connected to the first end of the switch transistor in the data selection unit through the touch flexible circuit board and the display flexible circuit board.
  • the film layer with the same function of the switch transistor in the data selection unit and the transistor in the display panel is provided in the same layer.
  • the embodiments of the present disclosure also provide a driving method of the above touch module, wherein the method includes:
  • a time-sharing driving level signal is provided for the level signal line, and the switch transistor in each data selection unit is controlled to be turned on sequentially, so that the data selection line is sequentially connected to the touch signal line.
  • providing a time-sharing driving level signal for the level signal line specifically includes:
  • the frequency of the level signal provided for each of the level signal lines is m times the frequency of the touch signal transmitted by the touch signal line.
  • FIG. 2 is a schematic diagram of a touch module provided by an embodiment of the disclosure.
  • FIG. 3 is a flowchart of a method for driving a touch module provided by an embodiment of the disclosure
  • FIG. 4 is a circuit timing diagram of a touch module provided by an embodiment of the disclosure.
  • FIG. 5 is one of structural schematic diagrams of a touch display device provided by an embodiment of the disclosure.
  • FIG. 6 is the second structural diagram of a touch display device provided by an embodiment of the disclosure.
  • the transmission signal line Tx and the receiving signal line Rx are merged to the step area on the touch screen panel (Touch Screen Panel, TSP) of the touch screen, and then pass through the flexible printed circuit of the TSP (Flexible Printed Circuit, FPC) 01 is led to IC02 of TSP for signal processing, and then the processed touch information is forwarded to main IC04 via FPC01 of TSP through main FPC03 to judge the touch position.
  • TSP Touch Screen Panel
  • FPC Flexible Printed Circuit
  • embodiments of the present disclosure provide a touch module and a driving method thereof, and a touch display device.
  • the touch module has a touch area and a non-touch area. As shown in FIG. 2, the touch module includes: a touch area extending from the touch area to the non-touch area Touch signal line 4, and n data selection units 5 connected to the touch signal line 4 extending to the non-touch area;
  • Each data selection unit 5 is connected to m touch signal lines 4; m and n are positive integers, and m is greater than or equal to 2;
  • the data selection unit 5 includes m switch transistors 6 and a data selection line 7; wherein, each switch transistor 6 is connected to a touch signal line 4 one-to-one, and the control terminal 3 of each switch transistor 6 is connected to the time-sharing driving power supply.
  • the level signal line 8 of the flat signal is connected, the first end 1 of each switch transistor 6 is connected to the corresponding touch signal line 4, and the second end 2 of each switch transistor 6 is connected to the data selection line 7.
  • the touch module provided by the embodiment of the present disclosure is provided with a data selection unit, each data selection unit is connected to a plurality of touch signal lines, and each data selection unit includes a switch transistor connected in a one-to-one correspondence with the touch signal line, and A data selection line. Since the control terminal of the switching transistor is connected to the level signal line that provides the time-sharing drive signal, under the control of the time-sharing drive level signal, the switching transistors in each data selection unit can be controlled to turn on sequentially, thereby The touch signal line is connected to the data selection line in turn, so that the touch signal line transmits signals to the data selection line in turn.
  • the total number of data selection lines in the touch module is less than the total number of touch signal lines, which can reduce the number of driving chips.
  • the number of ports required for data transmission with the touch module when the touch module is applied to a display product, there is no need to additionally provide a driver chip for driving the touch module, thereby reducing production costs.
  • the touch signal line includes: a transmission signal line (TX) and a reception signal line (RX); a transmission signal line and/or a reception signal line and data selection Unit connection.
  • the touch module provided by the embodiments of the present disclosure, whether TX is connected to the data selection unit or RX is connected to the data selection unit, can realize the data transmission lead strip between the touch module and the driving chip driving the touch module.
  • the number is less than the number of touch signal lines, so that the number of ports required to drive the driver chip of the touch module can be reduced.
  • both TX and RX are connected to the data selection unit, which can further reduce the number of leads for data transmission between the touch module and the driver chip driving the touch module, and reduce the data transmission between the driver chip and the touch module The number of ports required.
  • the touch signal line 4 in FIG. 2 is RX, of course, the touch signal line 4 can also be TX.
  • the switching transistor may be a thin film transistor or a metal oxide semiconductor field effect transistor (MOS) transistor, which is not limited herein.
  • MOS metal oxide semiconductor field effect transistor
  • all the switching transistors are N-type transistors or all P-type transistors, so that the manufacturing process of the switching transistors can be unified, thereby reducing process steps and saving production. cost.
  • the level signal lines connected to different switch transistors in the same data selection unit 5 are different, and the m-th switch in each data selection unit The transistors are all connected to the m-th level signal line. That is, different data selection units 5 share the level signal lines, so that the number of level signal lines can be reduced.
  • the data selection unit 5 includes a first switch transistor 9 and a second switch transistor 10; the first switch transistors 9 of different data selection units 5 are at the same first level The signal line RX_SEL1 is connected, and the second switch transistors 10 of different data selection units 5 are connected to the same second level signal line RX_SEL2.
  • each data selection unit is connected to m adjacent touch signal lines.
  • RX1 and RX2 are connected to the same data selection unit
  • RX3 and RX4 are connected to the same data selection unit
  • RX5 and RX6 are connected to the same data selection unit
  • RX7 and RX8 are connected to the same data selection unit.
  • the number of data selection lines is half of the number of RX.
  • the control terminal 3 of the first switch transistor 9 connected to RX1, RX3, RX5, and RX7 is connected to the first level signal line RX_SEL1, and the control terminal 3 of the second switch transistor 10 connected to RX2, RX4, RX6, and RX8 is connected to the first The two-level signal line RX_SEL2 is connected.
  • the first-level signal line RX_SEL1 and the second-level signal line RX_SEL2 provide time-sharing driving signals to control the first switch transistor and the second switch transistor to turn on sequentially. That is, when the first switching transistor is turned on, the second switching transistor is turned off, and when the second switching transistor is turned on, the first switching transistor is turned off.
  • RX1 is connected to the data selection line RX_1
  • the data selection line RX_1 outputs the signal of RX1
  • RX3 is connected to the data selection line RX_2
  • the data selection line RX_2 outputs the signal of RX3, RX5 It is connected to the data selection line RX_3, the data selection line RX_3 outputs the signal of RX5, RX7 is connected to the data selection line RX_4, and the data selection line RX_4 outputs the signal of RX7.
  • RX2 When the second switching transistor is turned on, when the first switching transistor is turned off, RX2 is connected to the data selection line RX_1, the data selection line RX_1 outputs the signal of RX2, RX4 is connected to the data selection line RX_2, and the data selection line RX_2 outputs the signal of RX4, RX6 It is connected to the data selection line RX_3, the data selection line RX_3 outputs the signal of RX6, RX8 is connected to the data selection line RX_4, and the data selection line RX_4 outputs the signal of RX8.
  • the RX in the touch module shown in FIG. 2 provided by the embodiment of the present disclosure can be replaced with TX, and then the second The one-level signal line RX_SEL1 and the second-level signal line RX_SEL2 provide time-sharing driving signals to control the first switch transistor and the second switch transistor to turn on sequentially, so that different TXs in a data selection unit are sequentially connected to the data selection line, Therefore, different TXs sequentially transmit data with the data selection line.
  • each data selection unit is connected to two touch signal lines as an example for description. Of course, each data selection unit can also be connected to more touch signal lines. Since among the n data selection units, each data selection unit is connected to m touch signal lines, that is, each data selection unit includes m switch transistors. Optionally, n data selection units are connected to m level signals. Line connection, m switch transistors in each data selection unit are respectively connected to m level signal lines.
  • the frequency of the level signal of each level signal line is m times the frequency of the touch signal transmitted by the touch signal line.
  • the frequency of the level signal of each level signal line is twice the frequency of the touch signal transmitted by the touch signal line. This can ensure that the signals on different touch signal lines output through the same data selection line do not overlap, thereby ensuring the accuracy of touch.
  • the level signals of the signal lines of different levels have the same amplitude and different phases.
  • the embodiments of the present disclosure also provide a driving method of the aforementioned touch module. As shown in FIG. 3, the method includes:
  • S301 Provide a time-sharing driving level signal for the level signal line, and control the switch transistor in each data selection unit to turn on sequentially, so that the data selection line is sequentially connected to the touch signal line.
  • providing a time-sharing driving level signal for the level signal line specifically includes:
  • each level signal line with a level signal with a frequency m times the frequency of the touch signal transmitted by the touch signal line.
  • providing a time-sharing driving level signal for the level signal line further includes: providing level signals with the same amplitude and different phases for the different level signal lines.
  • RX_SEL1 Under the control of the time-sharing driving signal, when RX_SEL1 is high, RX_SEL2 is low, the first switch transistor 9 connected to RX_1 is turned on, and the second switch transistor 10 connected to RX_2 is turned off, and RX1 is connected to the data selection line RX_1 Turn on, RX_1 outputs the signal of RX1; when RX_SEL2 is high, RX_SEL1 is low, the first switch transistor 9 connected to RX_1 is turned off, RX2 is turned on with the data selection line RX_1, and the second switch connected to RX_2 The transistor 10 is turned on, and RX_1 outputs the signal of RX2.
  • the data selection line is connected to the touch chip (IC) that drives the touch module, so that after the IC receives the RX signal output by the data selection line, the timing of different RX can be obtained through the algorithm.
  • the timing of RX_1 in Figure 2 can be obtained through the algorithm
  • the actual signals of RX1 and RX2 are obtained, so that the reception of the RX signal by the IC will not be affected, and the normal touch function can be realized.
  • an embodiment of the present disclosure further provides a touch display device, as shown in FIG. 5, comprising: a display panel 10, the above-mentioned touch module 20 provided by the embodiment of the present disclosure, and driving the display panel 10 and The driving chip 30 of the touch module 20 is connected to the data selection line (not shown in FIG. 5).
  • the touch display device provided by the embodiment of the present disclosure includes the touch module provided by the embodiment of the present disclosure, and the data selection line is connected to the driving chip. Since the number of data selection lines is less than the number of touch signal lines, The number of leads connected to the driver chip is less than the number of touch signal lines, which greatly reduces the number of ports connected between the driver chip and the touch module, so that the number of remaining ports of the driver chip that drives the display panel is sufficient for touch control.
  • the module is driven so that there is no need to additionally provide a driver chip for driving the touch module, which can reduce the production cost of the touch display device, and can also avoid the risk of poor binding caused by an additional driver chip for driving the touch module.
  • the touch display device provided by the embodiment of the present disclosure, as shown in FIG. 5 and FIG. 6, further includes a flexible circuit board 40;
  • the data selection unit 5 and the driving chip 30 are both located in the frame area of the display panel 10; the touch signal line is connected to the first end of the switch transistor in the data selection unit 5 through the flexible circuit board 40.
  • the flexible circuit board 40 includes a touch flexible circuit board 401 and a display flexible circuit board 402;
  • the touch signal line 4 is connected to the first end of the switch transistor in the data selection unit 5 through the touch flexible circuit board 401 and the display flexible circuit board 402 in sequence.
  • the touch module may be located on the display panel, that is, an on-cell touch screen, the touch area of the touch module is provided with touch electrodes, touch signal lines and touch electrodes It is connected and extends from the touch area to the non-touch area, is transferred to the display flexible circuit board of the display panel through the touch flexible circuit board, and then is connected to the driving chip through the data selection unit.
  • the film layer with the same function of the switch transistor in the data selection unit and the transistor in the display panel is provided in the same layer.
  • the switching transistors in the data selection unit are formed at the same time when the transistors of the display panel are fabricated, so that the process steps of separately fabricating the switching transistors in the data selection unit are omitted, and the production cost can be reduced.
  • the level signal line is connected to the driving chip.
  • the driving chip provides a ground signal for the level signal line during the display stage, so that the risk of electrostatic discharge can be avoided.
  • the display panel may be, for example, an Organic Light-Emitting Diode (OLED) display panel.
  • OLED Organic Light-Emitting Diode
  • the touch display device provided by the embodiments of the present disclosure may be, for example, a touch display device such as a mobile phone or a tablet computer.
  • each data selection unit is connected to multiple touch signal lines
  • Each data selection unit includes a switch transistor connected to the touch signal line one-to-one and a data selection line. Since the control end of the switch transistor is connected to the level signal line that provides the time-sharing driving signal, it is driven in time-sharing mode. Under the control of the level signal, the switch transistors in each data selection unit can be controlled to turn on sequentially, so that the touch signal line is sequentially connected to the data selection line, so that the touch signal line transmits signals to the data selection line in sequence.
  • the total number of data selection lines in the touch module is less than the total number of touch signal lines, which can reduce the number of driving chips.
  • the number of ports required for data transmission with the touch module when the touch module is applied to a display product, there is no need to additionally provide a driver chip for driving the touch module, thereby reducing production costs.

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Abstract

本公开公开了一种触控模组及其驱动方法、触控显示装置，所述触控模组具有触控区和非触控区，所述触控模组包括：从触控区延伸到非触控区的触控信号线，以及与延伸至非触控区的触控信号线连接的n个数据选择单元；每一数据选择单元与m条触控信号线连接；数据选择单元包括m个开关晶体管以及一条数据选择线；其中，每一开关晶体管一一对应一条触控信号线，各开关晶体管的控制端分别与提供分时驱动电平信号的电平信号线连接，各开关晶体管的第一端分别与对应的触控信号线连接，各开关晶体管的第二端均与数据选择线连接。

Description

触控模组及其驱动方法、触控显示装置
相关申请的交叉引用
本申请要求在2019年03月26日提交中国专利局、申请号为201910232119.4、申请名称为“一种触控模组及其驱动方法、触控显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及触控技术领域，尤其涉及一种触控模组及其驱动方法、触控显示装置。
背景技术
随着显示技术的发展，越来越多的显示产品具有触控功能。一般触控显示屏中的触控走线由传输信号线(Tx)和接收信号线(Rx)构成，由于传输信号线和接收信号线数量较多，以手机为例，Tx一般不少于16根，Rx一般不少于32根，这样，触控显示屏中的主驱动集成电路(main IC)的剩余输入/输出(input/output，I/O)端口数量不足以再处理Tx和Rx传输的信号，因此需要额外设置与Tx和Rx连接的驱动芯片。
发明内容
本公开实施例提供了一种触控模组及其驱动方法、触控显示装置，具体方案如下：
一方面，本公开实施例提供的一种触控模组，其中，所述触控模组具有触控区和非触控区，所述触控模组包括：从所述触控区延伸到所述非触控区的触控信号线，以及与延伸至所述非触控区的所述触控信号线连接的n个数据选择单元；
每一所述数据选择单元与m条所述触控信号线连接，m和n均为正整数， 且m大于或等于2；
所述数据选择单元包括m个开关晶体管以及一条数据选择线；其中，每一所述开关晶体管一一对应一条所述触控信号线，各所述开关晶体管的控制端分别与提供分时驱动电平信号的电平信号线连接，各所述开关晶体管的第一端分别与对应的所述触控信号线连接，各所述开关晶体管的第二端均与所述数据选择线连接。
可选地，在本公开实施例提供的触控模组中，所述触控信号线包括：传输信号线，以及接收信号线；所述传输信号线和/或所述接收信号线与所述数据选择单元连接。
可选地，在本公开实施例提供的触控模组中，所有开关晶体管均为N型晶体管或均为P型晶体管。
可选地，在本公开实施例提供的触控模组中，同一所述数据选择单元中不同开关晶体管连接的电平信号线不同，各所述数据选择单元中的第m个所述开关晶体管均与第m条电平信号线连接。
另一方面，本公开实施例的一种触控显示装置，包括：显示面板，本公开实施例提供的上述触控模组，以及驱动所述显示面板和所述触控模组的驱动芯片，所述驱动芯片与所述数据选择线连接。
可选地，在本公开实施例提供的触控显示装置中，还包括柔性电路板；
所述数据选择单元和所述驱动芯片均位于所述显示面板的边框区域；所述触控信号线通过所述柔性电路板与所述数据选择单元中的开关晶体管的第一端连接。
可选地，在本公开实施例提供的触控显示装置中，所述柔性电路板包括触控柔性电路板和显示柔性电路板；
所述触控信号线依次通过所述触控柔性电路板和所述显示柔性电路板与所述数据选择单元中的开关晶体管的第一端连接。
可选地，在本公开实施例提供的触控显示装置中，所述数据选择单元中的开关晶体管与所述显示面板中的晶体管具有相同功能的膜层为同层设置。
又一方面，本公开实施例还提供了一种上述触控模组的驱动方法，其中，所述方法包括：
为所述电平信号线提供分时驱动电平信号，控制每一所述数据选择单元中的开关晶体管依次打开，使得所述数据选择线依次与所述触控信号线导通。
可选地，在本公开实施例提供的驱动方法中，为所述电平信号线提供分时驱动电平信号，具体包括：
为每一所述电平信号线提供的电平信号的频率为所述触控信号线传输的触控信号的频率的m倍。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域的普通技术人员来讲，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为相关技术中触控显示屏的结构示意图；
图2为本公开实施例提供的一种触控模组的示意图；
图3为本公开实施例提供的触控模组的驱动方法的流程图；
图4为本公开实施例提供的触控模组的电路时序图；
图5为本公开实施例提供触控显示装置的结构示意图之一；
图6为本公开实施例提供触控显示装置的结构示意图之二。
具体实施方式
相关技术中，由于触控显示屏中的主驱动集成电路(main IC)的剩余输入/输出(input/output，I/O)端口数量不足以处理Tx和Rx传输的信号，因此需要额外设置与Tx和Rx连接的驱动芯片。具体地，如图1所示，传输信号线Tx和接收信号线Rx在触控显示屏的触控面板(TouchScreenPanel，TSP)上汇至台阶区域后，通过TSP的柔性电路板(Flexible Printed Circuit，FPC) 01引出到TSP的IC02进行信号处理，再将处理后的触控信息经由TSP的FPC01通过主FPC03转送至main IC04进行触控位置判断。
在上述相关技术中，由于传输信号线和接收信号线数量较多以及main IC剩余的I/O口数量限制，由于需要新增TSP IC，导致触控显示产品的生产成本增加，增加IC绑定(bonding)不良的风险，影响触控良率。
有鉴于此，本公开实施例提供了一种触控模组及其驱动方法、触控显示装置。
为使本公开的上述目的、特征和优点能够更为明显易懂，下面将结合附图和实施例对本公开做进一步说明。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开更全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的结构，因而将省略对它们的重复描述。本公开中所描述的表达位置与方向的词，均是以附图为例进行的说明，但根据需要也可以做出改变，所做改变均包含在本公开保护范围内。本公开的附图仅用于示意相对位置关系不代表真实比例。
需要说明的是，在以下描述中阐述了具体细节以便于充分理解本公开。但是本公开能够以多种不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本公开内涵的情况下做类似推广。因此本公开不受下面公开的具体实施方式的限制。说明书后续描述为实施本公开的较佳实施方式，然所述描述乃以说明本公开的一般原则为目的，并非用以限定本公开的范围。本公开的保护范围当视所附权利要求所界定者为准。
下面结合附图，对本公开实施例提供的触控模组及其驱动方法、触控显示装置进行具体说明。
本公开实施例提供的一种触控模组，触控模组具有触控区和非触控区，如图2所示，触控模组包括：从触控区延伸到非触控区的触控信号线4，以及与延伸至非触控区的触控信号线4连接的n个数据选择单元5；
每一数据选择单元5与m条触控信号线4连接；m，n为正整数，且m 大于或等于2；
数据选择单元5包括m个开关晶体管6以及一条数据选择线7；其中，每一开关晶体管6一一对应连接一条触控信号线4，各开关晶体管6的控制端3分别与提供分时驱动电平信号的电平信号线8连接，各开关晶体管6的第一端1分别与对应的触控信号线4连接，各开关晶体管6的第二端2均与数据选择线7连接。
本公开实施例提供的触控模组设置有数据选择单元，每个数据选择单元与多条触控信号线连接，每个数据选择单元中包括与触控信号线一一对应连接的开关晶体管以及一条数据选择线，由于开关晶体管的控制端与提供分时驱动信号的电平信号线连接，在分时驱动电平信号的控制下，可以控制每一数据选择单元中的开关晶体管依次打开，从而使得触控信号线依次与数据选择线导通，使得触控信号线依次向数据选择线传输信号。并且，由于多条触控信号线通过开关晶体管连接至一条数据选择线，这样触控模组中的数据选择线的总条数比与触控信号线的总条数少，从而可以减少驱动芯片与触控模组进行数据传输需要的端口数量。进而当触控模组应用于显示产品时，无需额外设置驱动触控模组的驱动芯片，从而可以减少生产成本。
可选地，在本公开实施例提供的触控模组中，触控信号线包括：传输信号线(TX)，以及接收信号线(RX)；传输信号线和/或接收信号线与数据选择单元连接。
本公开实施例提供的触控模组，无论是TX与数据选择单元连接，还是RX与数据选择单元连接，均可以实现触控模组与驱动触控模组的驱动芯片进行数据传输引线的条数比触控信号线的条数少，从而可以减少需要的与驱动触控模组的驱动芯片的端口数量。当然，TX、RX均与数据选择单元连接，可以进一步减少触控模组与驱动触控模组的驱动芯片之间进行数据传输的引线的条数，减少驱动芯片与触控模组进行数据传输需要的端口数量。
需要说明的是，本公开实施例提供的如图2所示的触控模组，以8条数据信号线与4个数据选择单元连接、每个数据选择单元与2条触控信号线连 接为例进行举例说明，即n＝4，m＝2。当然，数据信号线的数量、数据选择单元的数量、以及每一数据选择单元连接的数据信号线的数量可以根据实际需要进行选择，本公开不进行限制。图2中触控信号线4为RX，当然触控信号线4也可以是TX。
可选地，在本公开实施例提供的触控模组中，开关晶体管可以为薄膜晶体管或者金属氧化物半导体场效应晶体(metal oxide semiconductor，MOS)管，在此不作限定。
可选地，在本公开实施例提供的触控模组中，所有开关晶体管均为N型晶体管或均为P型晶体管，这样可以使开关晶体管的制备工艺统一，从而较少工艺步骤，节约生产成本。
在具体实施时，如果开关晶体管是N型晶体管，则通过电平信号线提供高电平信号导通开关晶体管。如果开关晶体管是P型晶体管，则通过电平信号线提供低电平信号导通开关晶体管。
可选地，在本公开实施例提供的触控模组中，如图2所示，同一数据选择单元5中不同开关晶体管连接的电平信号线不同，各数据选择单元中的第m个开关晶体管均与第m条电平信号线连接。即不同数据选择单元5共用电平信号线，这样可以减少电平信号线的数量。
具体地，以m＝2为例，如图2所示，数据选择单元5包括第一开关晶体管9和第二开关晶体管10；不同数据选择单元5的第一开关晶体管9与同一第一电平信号线RX_SEL1连接，不同数据选择单元5的第二开关晶体管10与同一第二电平信号线RX_SEL2连接。
本公开实施例提供的触控模组，每一数据选择单元与相邻的m条触控信号线连接。如图2所示的触控模组，RX1和RX2连接同一个数据选择单元，RX3和RX4连接同一个数据选择单元，RX5和RX6连接同一个数据选择单元，RX7和RX8连接同一个数据选择单元，这样，与RX连接的数据选择单元中，数据选择线的数量是RX数量的一半。连接RX1、RX3、RX5、以及RX7的第一开关晶体管9的控制端3与第一电平信号线RX_SEL1连接，连接 RX2、RX4、RX6、以及RX8的第二开关晶体管10的控制端3与第二电平信号线RX_SEL2连接。通过第一电平信号线RX_SEL1以及第二电平信号线RX_SEL2提供分时驱动信号，控制第一开关晶体管、第二开关晶体管依次开启。即第一开关晶体管打开时第二开关晶体管关闭，第二开关晶体管打开是第一开关晶体管关闭。第一开关晶体管打开时第二开关晶体管关闭时，RX1与数据选择线RX_1导通，数据选择线RX_1输出RX1的信号，RX3与数据选择线RX_2导通，数据选择线RX_2输出RX3的信号，RX5与数据选择线RX_3导通，数据选择线RX_3输出RX5的信号，RX7与数据选择线RX_4导通，数据选择线RX_4输出RX7的信号。第二开关晶体管打开时第一开关晶体管关闭时，RX2与数据选择线RX_1导通，数据选择线RX_1输出RX2的信号，RX4与数据选择线RX_2导通，数据选择线RX_2输出RX4的信号，RX6与数据选择线RX_3导通，数据选择线RX_3输出RX6的信号，RX8与数据选择线RX_4导通，数据选择线RX_4输出RX8的信号。
如果是TX与数据选择单元连接，仍以一个数据选择单元连接两条TX为例，可将本公开实施例提供的如图2所示的触控模组中的RX替换为TX，则通过第一电平信号线RX_SEL1以及第二电平信号线RX_SEL2提供分时驱动信号，控制第一开关晶体管、第二开关晶体管依次开启，使得一个数据选择单元中的不同TX依次与数据选择线导通，从而不同TX依次与数据选择线进行数据传输。
图2中以每个数据选择单元连接两条触控信号线为例进行说明，当然，每个数据选择单元也可以连接更多条触控信号线。由于n个数据选择单元中，每一数据选择单元与m条触控信号线连接，即每一数据选择单元包括m个开关晶体管，可选地，n个数据选择单元均与m条电平信号线连接，每一数据选择单元中的m个开关晶体管分别与m条电平信号线连接。
可选地，驱动触控模组时，每一电平信号线的电平信号频率为触控信号线传输的触控信号的频率的m倍。
例如，当每一数据选择单元与2条触控信号线连接时，每一电平信号线 的电平信号频率为触控信号线传输的触控信号的频率的2倍。这样可以保证通过同一数据选择线输出的不同触控信号线上的信号之间不重叠，从而保证触控的准确性。
可选地，驱动触控模组时，不同电平信号线的电平信号的幅值相同且相位不同。
基于同一发明构思，本公开实施例还提供了上述触控模组的驱动方法，如图3所示，方法包括：
S301、为电平信号线提供分时驱动电平信号，控制每一数据选择单元中的开关晶体管依次打开，使得数据选择线依次与触控信号线导通。
可选地，在本公开实施例提供的驱动方法中，为电平信号线提供分时驱动电平信号，具体包括：
为每一电平信号线提供频率为触控信号线传输的触控信号的频率的m倍的电平信号。
可选地，在本公开实施例提供的驱动方法中，为电平信号线提供分时驱动电平信号还包括：为不同电平信号线提供幅值相同且相位不同的电平信号。
具体地，以RX连接数据选择单元且开关晶体管为NMOS管为例，结合图4提供的一个数据选择单元的电路时序图，对本公开实施例提供的触控模组的驱动方法进行说明。在分时驱动信号的控制下，当RX_SEL1为高电平时，RX_SEL2为低电平，与RX_1连接的第一开关晶体管9打开，与RX_2连接的第二开关晶体管10关闭，RX1与数据选择线RX_1导通，RX_1输出为RX1的信号；当RX_SEL2为高电平时，RX_SEL1为低电平，与RX_1连接的第一开关晶体管9关闭，RX2与数据选择线RX_1导通，与RX_2连接的第二开关晶体管10打开，RX_1输出为RX2的信号。数据选择线与驱动触控模组的触控芯片(IC)连接，这样IC在接收数据选择线输出的RX信号后，通过算法得到不同RX的时序，例如对于图2中RX_1的时序可以通过算法处理后获得RX1、RX2的实际信号，从而不会影响IC对RX信号的接收，可以实现正常的触控功能。
基于同一发明构思，本公开实施例还提供了一种触控显示装置，如图5所示，包括：显示面板10，本公开实施例提供的上述触控模组20，以及驱动显示面板10和触控模组20的驱动芯片30，驱动芯片30与数据选择线(图5中未视出)连接。
本公开实施例提供的触控显示装置，由于包括本公开实施例提供的触控模组，数据选择线与驱动芯片连接，由于数据选择线的条数少于触控信号线的条数，从而与驱动芯片连接的引线的条数少于触控信号线的条数，从而大大减少了驱动芯片与触控模组连接的端口数量，使得驱动显示面板的驱动芯片剩余端口数量足以满足对触控模组进行驱动，从而无需额外设置驱动触控模组的驱动芯片，可以减少触控显示装置的生产成本，还可以避免额外设置驱动触控模组的驱动芯片造成的绑定不良的风险。
可选地，在本公开实施例提供的触控显示装置中，如图5和图6所示，还包括柔性电路板40；
数据选择单元5和驱动芯片30均位于显示面板10的边框区域；触控信号线通过柔性电路板40与数据选择单元5中的开关晶体管的第一端连接。
可选地，在本公开实施例提供的触控显示装置中，如图5所示，柔性电路板40包括触控柔性电路板401和显示柔性电路板402；
触控信号线4依次通过触控柔性电路板401和显示柔性电路板402与数据选择单元5中的开关晶体管的第一端连接。
本公开实施例提供的触控显示装置，触控模组可以位于显示面板之上，即为on cell触摸屏，触控模组的触控区设置有触控电极，触控信号线与触控电极连接且从触控区延伸到非触控区，经由触控柔性电路板转接到显示面板的显示柔性电路板，再通过数据选择单元与驱动芯片连接。
可选地，在本公开实施例提供的触控显示装置中，数据选择单元中的开关晶体管与显示面板中的晶体管具有相同功能的膜层为同层设置。这样在制作显示面板的晶体管的同时形成数据选择单元中的开关晶体管，从而省去单独制作数据选择单元中的开关晶体管的工艺步骤，可以降低生产成本。
可选地，在本公开实施例提供的触控显示装置中，电平信号线与驱动芯片连接。
即通过驱动芯片为数据选择单元提供分时驱动信号，在触控阶段控制开关晶体管依次打开。
可选地，在显示阶段驱动芯片为电平信号线提供接地信号，从而可以避免静电释放的风险。
本公开实施例提供的触控显示装置，显示面板例如可以是有机发光二极管(Organic Light-Emitting Diode，OLED)显示面板。
本公开实施例提供的触控显示装置，例如可以是手机、平板电脑等触控显示装置。
综上，本公开实施例提供的触控模组、触控模组的驱动方法以及触控显示面板，由于触控模组设置有数据选择单元，每个数据选择单元与多条触控信号线连接，每个数据选择单元中包括与触控信号线一一对应连接的开关晶体管以及一条数据选择线，由于开关晶体管的控制端与提供分时驱动信号的电平信号线连接，在分时驱动电平信号的控制下，可以控制每一数据选择单元中的开关晶体管依次打开，从而使得触控信号线依次与数据选择线导通，使得触控信号线依次向数据选择线传输信号。并且，由于多条触控信号线通过开关晶体管连接至一条数据选择线，这样触控模组中的数据选择线的总条数比与触控信号线的总条数少，从而可以减少驱动芯片与触控模组进行数据传输需要的端口数量。进而当触控模组应用于显示产品时，无需额外设置驱动触控模组的驱动芯片，从而可以减少生产成本。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (10)

  1. 一种触控模组，其中，所述触控模组具有触控区和非触控区，所述触控模组包括：从所述触控区延伸到所述非触控区的触控信号线，以及与延伸至所述非触控区的所述触控信号线连接的n个数据选择单元；
    每一所述数据选择单元与m条所述触控信号线连接，m和n均为正整数，且m大于或等于2；
    所述数据选择单元包括m个开关晶体管以及一条数据选择线；其中，每一所述开关晶体管一一对应一条所述触控信号线，各所述开关晶体管的控制端分别与提供分时驱动电平信号的电平信号线连接，各所述开关晶体管的第一端分别与对应的所述触控信号线连接，各所述开关晶体管的第二端均与所述数据选择线连接。
  2. 根据权利要求1所述的触控模组，其中，所述触控信号线包括：传输信号线，以及接收信号线；所述传输信号线和/或所述接收信号线与所述数据选择单元连接。
  3. 根据权利要求1所述的触控模组，其中，所有开关晶体管均为N型晶体管或均为P型晶体管。
  4. 根据权利要求3所述的触控模组，其中，同一所述数据选择单元中不同开关晶体管连接的电平信号线不同，各所述数据选择单元中的第m个所述开关晶体管均与第m条电平信号线连接。
  5. 一种触控显示装置，其中，包括：显示面板，如权利要求1～4任一项所述的触控模组，以及驱动所述显示面板和所述触控模组的驱动芯片，所述驱动芯片与所述数据选择线连接。
  6. 根据权利要求5所述的触控显示装置，其中，还包括柔性电路板；
    所述数据选择单元和所述驱动芯片均位于所述显示面板的边框区域；所述触控信号线通过所述柔性电路板与所述数据选择单元中的开关晶体管的第一端连接。
  7. 根据权利要求6所述的触控显示装置，其中，所述柔性电路板包括触控柔性电路板和显示柔性电路板；
    所述触控信号线依次通过所述触控柔性电路板和所述显示柔性电路板与所述数据选择单元中的开关晶体管的第一端连接。
  8. 根据权利要求6所述的触控显示装置，其中，所述数据选择单元中的开关晶体管与所述显示面板中的晶体管具有相同功能的膜层为同层设置。
  9. 一种根据权利要求1～4任一项所述的触控模组的驱动方法，其中，所述方法包括：
    为所述电平信号线提供分时驱动电平信号，控制每一所述数据选择单元中的开关晶体管依次打开，使得所述数据选择线依次与所述触控信号线导通。
  10. 根据权利要求9所述的驱动方法，其中，为所述电平信号线提供分时驱动电平信号，具体包括：
    为每一所述电平信号线提供的电平信号的频率为所述触控信号线传输的触控信号的频率的m倍。
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