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 PDFInfo
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- 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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- touch
- data selection
- signal line
- selection unit
- line
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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
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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
- G06F3/0416—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
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- 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
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- 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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Description
Claims (10)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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