Touch panel and driving method and driving device thereof

Abstract

The embodiment of the present disclosure provides a touch panel and a driving method and a driving device thereof. The touch panel includes a touch area, the touch area includes at least m touch sub-areas, and m types of touch units, each touch sub-area includes two types of touch units, the two types of touch units in each touch sub-area are arranged at intervals, two adjacent touch sub-areas include the same type of touch units, and the same touch units included in the two adjacent touch sub-areas are connected at the boundary of the two touch sub-areas, and m is a positive integer greater than or equal to 3. By setting multiple touch sub-areas as a touch scanning channel, scanning can be performed according to the touch scanning channel within a scanning cycle, and only part of the touch sub-areas can be scanned in each scanning cycle, so as to achieve the effect of reducing touch power consumption.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to but are not limited to the field of touch technology, and in particular to a touch panel and a driving method and a driving device thereof. Background Art

[0002] The power consumption of wearable electronic products has always been a focus of customers. Lower touch power consumption and higher touch accuracy have also become the future development trend of touch technology. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The embodiments of the present disclosure provide a touch panel and a driving method and device thereof to reduce power consumption.

[0005] On the one hand, an embodiment of the present disclosure provides a touch panel, including a touch area, the touch area including at least m touch sub-areas, and m touch units, each touch sub-area including two touch units, the two touch units in each touch sub-area are arranged at intervals, two adjacent touch sub-areas include the same touch unit, and the same touch units included in two adjacent touch sub-areas are connected at the boundary of the two touch sub-areas, and m is a positive integer greater than or equal to 3.

[0006] On the other hand, an embodiment of the present disclosure further provides a method for driving a touch panel, wherein the touch panel is the touch panel as described above, and the driving method includes:

[0007] Scan the n touch sub-areas in one scanning cycle to obtain the touch point coordinates of the n touch sub-areas;

[0008] After m scanning cycles, each touch sub-area is scanned for n scanning cycles, and each touch point obtains n sets of touch point coordinates. The point is reported according to the n sets of touch point coordinates of each touch point, where m is the number of touch sub-areas, m≥3, and n is a positive integer less than or equal to m.

[0009] On the other hand, the embodiment of the present disclosure further provides a driving device for a touch panel, wherein the touch panel is the touch panel as described above, and the driving device comprises: a channel converter and a touch circuit, wherein the touch circuit comprises a driving unit and a receiving unit; wherein:

[0010] The driving unit is used to send a touch driving signal; the driving unit is connected to the channel converter;

[0011] The receiving unit is used to receive a touch driving signal; the receiving unit is connected to the channel converter;

[0012] The channel converter is connected to each touch scanning channel and is used to switch the connection between the same touch scanning channel and the driving unit or the receiving unit in different scanning cycles to achieve the state conversion of the touch scanning channel sending the driving signal and receiving the driving signal.

[0013] The disclosed embodiment sets multiple touch sub-areas as a touch scanning channel, so that scanning can be performed according to the touch scanning channel within a scanning cycle. Only part of the touch sub-areas can be scanned in each scanning cycle, that is, only touch drive signals of part of the touch sub-areas are received, thereby achieving the effect of reducing touch power consumption.

[0014] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings.

[0015] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0017] Figure 1 is a schematic diagram of a touch control structure;

[0018] Figure 2 for Figure 1 Scanning flow chart of the touch control structure shown;

[0019] Figure 3 for Figure 1 Scanning timing diagram of the touch control structure shown;

[0020] Figure 4 This is a flow chart of the touch panel driving method according to an embodiment of the present disclosure;

[0021] Figure 5 is a schematic diagram of a touch panel driving device according to an embodiment of the present disclosure;

[0022] Figure 6 A schematic diagram of the connection between the touch panel and the driving device according to an embodiment of the present disclosure;

[0023] Figure 7 A schematic diagram of a circular touch screen touch panel according to an embodiment of the present disclosure;

[0024] Figure 8 This is an example diagram of the connection relationship between the first touch electrode 10 and the second touch electrode 20 according to an embodiment of the present disclosure;

[0025] Fig. 9 This is an example diagram of the connection relationship between the second touch electrode 20 and the third touch electrode 30 according to an embodiment of the present disclosure;

[0026] Fig.10 This is an exemplary diagram of the connection relationship between the first touch electrode 10 and the third touch electrode 30 according to an embodiment of the present disclosure;

[0027] Fig.11 A schematic diagram of a touch scanning channel of a circular touch panel according to an embodiment of the present disclosure;

[0028] Fig.12 This is a driving flow chart of a circular touch panel in an exemplary embodiment of the present disclosure;

[0029] Fig.13 This is a charging and discharging timing diagram of a circular touch panel in an exemplary embodiment of the present disclosure;

[0030] Fig.14 is a driving flow chart of a circular touch panel in another exemplary embodiment of the present disclosure;

[0031] Fig.15 FIG. 4 is a charge and discharge timing diagram of a circular touch panel in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be arbitrarily combined with each other to obtain new embodiments.

[0033] The steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that shown here.

[0034] Unless otherwise defined, technical or scientific terms used in the present disclosure should have the common meanings understood by one of ordinary skill in the art to which the present invention belongs.

[0035] In the drawings, the size of each component, the thickness of a layer, or the area is sometimes exaggerated for the sake of clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to such dimensions, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or values ​​shown in the drawings.

[0036] The ordinal numbers such as “first”, “second” and “third” in the present disclosure are provided to avoid confusion among constituent elements and do not indicate any order, quantity or importance.

[0037] In the present disclosure, for the sake of convenience, the words and phrases indicating the orientation or positional relationship, such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing the present specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, it is not limited to the words and phrases described in the disclosure and can be appropriately replaced according to the circumstances.

[0038] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in the present disclosure can be understood according to the circumstances.

[0039] In the present disclosure, "parallel" means a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" means a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0040] In the present disclosure, "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film" in some cases. Similarly, "insulating film" may be replaced with "insulating layer" in some cases.

[0041] Figure 1 is a schematic diagram of a touch structure, such as Figure 1 As shown, the touch structure layer is provided with two different channels: a driving channel composed of driving electrodes (Tx) and a sensing channel composed of sensing electrodes (Rx, or receiving electrodes). The driving channel is used to drive signals, and the sensing channel is used to receive signals. Both channels act on the entire area of ​​the touch structure. In one scanning cycle, multiple driving channels drive the signal Tx(n) multiple times (or the Tx channel is charged and discharged multiple times), and then the coordinates are calculated and fed back to the system for reporting. For example, the touch structure layer includes 8 Tx channels, and the 8 Tx channels are scanned and fed back in turn. One scanning cycle performs 8 scans and feedback reports, and completes the touch detection of the entire touch screen area. The scanning process is as follows: Figure 2 As shown, the timing is Figure 3 shown.

[0042] like Figure 2 As shown, in each scanning cycle, the scanning process includes: charging and discharging the Tx(n) channel (step 1), completing the coordinate calculation and feeding back to the system reporting point (step 2), judging whether all channels have been scanned (step 3), if the scanning is completed, the current scanning cycle ends, if the scanning is not completed, return to step 1 to continue scanning.

[0043] Figure 3 In the figure, T1 and T2 are scanning cycles, Tc is the charge and discharge time, Tj is the coordinate recording time, Ty is the coordinate calculation time, and Tb is the total time. In each scanning cycle, the scanning feedback of 8 channels needs to be completed.

[0044] It can be seen that for this type of touch screen, all touch areas need to be scanned and reported once in each scanning cycle. However, for wearable electronic products, based on actual application scenarios, the touch frequency and accuracy requirements are not as high as those of other electronic products such as mobile phones. Therefore, it is possible to consider appropriately sacrificing the touch frequency. For this purpose, the embodiment of the present disclosure provides a touch panel that can adopt a time-sharing and partitioning driving method, thereby achieving the effect of reducing touch power consumption and improving touch accuracy.

[0045] The touch panel described in the embodiment of the present disclosure can be arranged on a display substrate to form a touch display panel. The display substrate can be a liquid crystal display (LCD) substrate, or an organic light emitting diode (OLED) display substrate, or a plasma display device (PDP) display substrate, or an electrophoretic display (EPD) display substrate. In an exemplary embodiment, the display substrate is an OLED display substrate, and the OLED display substrate may include a substrate, a driving circuit layer arranged on the substrate, a light emitting structure layer arranged on the driving circuit layer, and an encapsulation layer arranged on the light emitting structure layer. The touch structure layer is arranged on the encapsulation layer of the display substrate to form a touch structure on a thin film encapsulation (Touch on Thin Film Encapsulation, referred to as Touch on TFE) structure, and the display structure and the touch structure are integrated together, which has the advantages of being light, thin, and foldable, and can meet the product requirements of flexible folding, narrow frame, etc.

[0046] The touch panel provided by the embodiment of the present disclosure includes a touch area, the touch area includes at least m touch sub-areas, and m types of touch units, each touch sub-area includes two types of touch units, the two types of touch units in each touch sub-area are arranged at intervals, two adjacent touch sub-areas include the same type of touch units, and the same touch units included in the two adjacent touch sub-areas are connected at the boundary of the two touch sub-areas to form a touch scanning channel acting on the two adjacent touch sub-areas, and m is a positive integer greater than or equal to 3. For example, m is 3, 4, 5, etc.

[0047] By setting two adjacent touch sub-areas as a touch scanning channel, scanning can be performed according to the touch scanning channel within a scanning cycle. In each scanning cycle, only part of the touch area can be scanned, that is, the touch point coordinates of part of the touch sub-area are obtained. After multiple scanning cycles, when all the touch sub-areas have been scanned, the coordinates can be reported, thereby reducing the touch power consumption.

[0048] In an exemplary embodiment, the entire touch sub-region can be divided into at least three sub-regions, for example, the touch structure layer includes at least a first touch sub-region, a second touch sub-region and a third touch sub-region, the first touch sub-region includes a plurality of first touch units and a plurality of second touch units, the second touch sub-region includes a plurality of second touch units and a plurality of third touch units, and the third touch sub-region includes a plurality of first touch units and a plurality of third touch units;

[0049] At a boundary between the second touch control sub-area and the third touch control sub-area, the third touch control unit of the second touch control sub-area is connected to the third touch control unit of the third touch control sub-area to form a first channel for touch scanning acting on the second touch control sub-area and the third touch control sub-area;

[0050] At a boundary between the first touch control sub-area and the third touch control sub-area, the first touch control unit of the first touch control sub-area is connected to the first touch control unit of the third touch control sub-area to form a second channel for touch scanning acting on the first touch control sub-area and the third touch control sub-area;

[0051] At the boundary between the first touch sub-area and the second touch sub-area, the second touch unit of the first touch sub-area is connected to the second touch unit of the second touch sub-area to form a third channel for touch scanning acting on the first touch sub-area and the second touch sub-area.

[0052] By setting three channels, each channel is located in two touch sub-areas, the touch point coordinates of the two touch sub-areas can be obtained in each scanning cycle. One touch sub-area is scanned multiple times in different scanning cycles. After three scanning cycles, the touch point coordinates of all touch sub-areas can be obtained, and the coordinate data is calculated according to the touch point coordinates to complete the point reporting. By designing a point reporting every three cycles, the power consumption can be greatly reduced compared to the solution of scanning once and reporting once in the prior art.

[0053] In an exemplary embodiment, in the first touch sub-area, the first touch unit has a line shape extending along a first extension direction, and the second touch unit has a line shape extending along a second extension direction;

[0054] In the second touch sub-area, the second touch unit has a line shape extending along a third extension direction, and the third touch unit has a line shape extending along the first extension direction;

[0055] In the third touch sub-area, the first touch unit has a line shape extending along a third extension direction, and the third touch unit has a line shape extending along a second extension direction;

[0056] The first extension direction, the second extension direction and the third extension direction intersect each other. Optionally, the angles between the two directions are the same.

[0057] In an exemplary embodiment, in the first touch sub-area, each of the first touch units includes a plurality of first touch electrodes and a first connection portion sequentially arranged along a first extension direction, and the plurality of first touch electrodes are connected through a plurality of first connection portions; each of the second touch units includes a plurality of second touch electrodes sequentially arranged along a second extension direction, and the plurality of second touch electrodes are connected through a second connection portion;

[0058] In the second touch sub-area, each of the second touch units includes a plurality of second touch electrodes sequentially arranged along a third extension direction and a second connecting portion, and the plurality of second touch electrodes are connected through the second connecting portion; each of the third touch units includes a plurality of third touch electrodes sequentially arranged along the first extension direction, and the plurality of third touch electrodes are connected through the third connecting portion;

[0059] In the third touch sub-area, each of the first touch units includes a plurality of first touch electrodes and a first connecting portion arranged in sequence along a third extension direction, and the plurality of first touch electrodes are connected through the first connecting portion; each of the third touch units includes a plurality of third touch electrodes arranged in sequence along the second extension direction, and the plurality of third touch electrodes are connected through the third connecting portion.

[0060] In an exemplary embodiment, the first touch electrode, the first connecting portion, and the second touch electrode are arranged in the same layer, and the second connecting portion, the third touch electrode, and the third connecting portion are arranged in the same layer, which is different from the layer where the first touch electrode, the first connecting portion, and the second touch electrode are located; or, the first touch electrode, the second touch electrode, and the second connecting portion are arranged in the same layer, and the first connecting portion, the third touch electrode, and the third connecting portion are arranged in the same layer, which is different from the layer where the first touch electrode, the second touch electrode, and the second connecting portion are located. This is only an exemplary arrangement of the touch electrodes and the connecting portions, and two layers are used as an example for explanation. In other embodiments, the layers where the touch electrodes and the connecting portions are located can be arranged as needed, or a three-layer structure can be arranged.

[0061] In an exemplary embodiment, the first touch electrode, the second touch electrode and the third touch electrode may have a rectangular shape, a rhombus shape or a triangle shape. Taking the rectangular shape or the rhombus shape as an example, each touch electrode includes a first side, a second side, a third side and a fourth side, wherein the first side and the third side are arranged opposite to each other, the second side and the fourth side are arranged opposite to each other, the length of the first side is equal to the length of the third side, the length of the second side is equal to the length of the fourth side, and the length of the first side is greater than the length of the second side;

[0062] In the first touch sub-area, the second side and the fourth side of the first touch electrode and the second side and the fourth side of the second touch electrode extend along a third extension direction, and the first side and the third side of the first touch electrode and the first side and the third side of the second touch electrode extend in a direction perpendicular to the third extension direction;

[0063] In the second touch sub-area, the second side and the fourth side of the second touch electrode and the second side and the fourth side of the third touch electrode extend along a second extension direction, and the first side and the third side of the second touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the second extension direction;

[0064] In the third touch sub-area, the second side and the fourth side of the first touch electrode and the second side and the fourth side of the third touch electrode extend along a first extension direction, and the first side and the third side of the first touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the first extension direction.

[0065] In an exemplary embodiment, at the boundary between the first touch sub-area and the third touch sub-area, an incomplete first touch electrode in the first touch sub-area adjacent to the third touch sub-area and an incomplete first touch electrode in the third touch sub-area adjacent to the first touch sub-area form a polygonal first touch electrode; the complete touch electrode is, for example, a rectangular or diamond-shaped touch electrode, and the incomplete touch electrode is an electrode whose shape is only a portion of the shape of the complete touch electrode.

[0066] At the boundary between the second touch control sub-region and the third touch control sub-region, the incomplete third touch control electrode in the second touch control sub-region adjacent to the third touch control sub-region and the incomplete third touch control electrode in the third touch control sub-region adjacent to the second touch control sub-region form a polygonal third touch control electrode;

[0067] At the boundary between the first touch sub-region and the second touch sub-region, the incomplete second touch electrode in the first touch sub-region adjacent to the second touch sub-region and the incomplete second touch electrode in the second touch sub-region adjacent to the first touch sub-region form a polygonal second touch electrode.

[0068] The incomplete touch electrode may be 1 / 2 of a rectangle, such as a triangle.

[0069] In an exemplary embodiment, when the touch electrode has a shape such as a rectangle or a rhombus, each touch electrode includes a first side, a second side, a third side and a fourth side. At the boundary between two adjacent touch sub-areas, the first side and the second side of a touch electrode on one side of the boundary and the third side and the fourth side of the touch electrode on the other side of the adjacent boundary form a quadrilateral touch electrode, or the third side and the fourth side of a touch electrode on one side of the boundary and the first side and the second side of the touch electrode on the other side of the adjacent boundary form a quadrilateral touch electrode.

[0070] For example, at the boundary between the first touch control sub-region and the third touch control sub-region, the first touch control electrode in the first touch control sub-region adjacent to the third touch control sub-region is a first triangle, the first touch control electrode in the third touch control sub-region adjacent to the first touch control sub-region is a second triangle, and the first touch electrode of the first triangle and the first touch electrode of the second triangle form a polygonal first touch electrode;

[0071] At the boundary between the second touch sub-region and the third touch sub-region, the third touch electrode in the second touch sub-region adjacent to the third touch sub-region is a third triangle, and the third touch electrode in the third touch sub-region adjacent to the first touch sub-region is a fourth triangle; the third touch electrode of the third triangle and the third touch electrode of the fourth triangle form a polygonal third touch electrode;

[0072] At the boundary between the first touch sub-area and the second touch sub-area, the second touch electrode in the first touch sub-area adjacent to the second touch sub-area is a fifth triangle, and the second touch electrode in the second touch sub-area adjacent to the first touch sub-area is a sixth triangle; the second touch electrode of the fifth triangle and the second touch electrode of the sixth triangle form a polygonal second touch electrode.

[0073] In an exemplary embodiment, a polygonal first touch electrode at the boundary between a first touch sub-area and a third touch sub-area is symmetrical along the boundary line between the first touch sub-area and the third touch sub-area; a polygonal third touch electrode at the boundary between a second touch sub-area and a third touch sub-area is symmetrical along the boundary line between the second touch sub-area and the third touch sub-area; and a polygonal second touch electrode at the boundary between the first touch sub-area and the second touch sub-area is symmetrical along the boundary line between the first touch sub-area and the second touch sub-area.

[0074] In an exemplary embodiment, the touch area may be circular, elliptical or polygonal (eg, quadrilateral, pentagon, hexagon, etc.), and the angle between the first extension direction, the second extension direction and the third extension direction is 60°.

[0075] The embodiment of the present disclosure further provides a method for driving a touch panel, wherein the touch panel is the aforementioned touch panel, and the driving method is as follows: Figure 4 As shown, including:

[0076] Step 10, scanning the n touch sub-areas within one scanning cycle to obtain the touch point coordinates of the n touch sub-areas;

[0077] For example, in each scanning cycle, the n touch sub-areas of the touch panel are scanned according to the touch scanning channel, and the touch point coordinates of the n touch sub-areas are recorded until all the touch sub-areas are scanned;

[0078] Step 11, after m scanning cycles, each touch sub-area is scanned for n scanning cycles, each touch point obtains n sets of touch point coordinates, and the point is reported according to the n sets of touch point coordinates of each touch point, where m is the number of touch sub-areas, m≥3, and n is a positive integer less than or equal to m.

[0079] That is, for any touch sub-area, it is scanned and driven in n scanning cycles, so n sets of touch point coordinates can be obtained. By designing to report points after m scanning cycles, the power loss of reporting points once per scanning can be avoided, thereby saving power consumption.

[0080] In an exemplary embodiment, the reporting of the touch point based on the n groups of touch point coordinates of each touch point includes: for any touch point, averaging the obtained n groups of touch point coordinates to obtain the reported point coordinates. For example, for a touch point, 2 groups of touch point coordinates (x1, y1) and (x2, y2) are obtained, and averaging is performed to obtain the reported point coordinates x = (x1 + x2) / 2, y = (y1 + y2) / 2. The above-mentioned optimization processing takes into account the capacitance difference between the near end and the far end of the channel, reduces the reporting deviation, and can improve the touch accuracy. In other embodiments, in addition to averaging, when more than three groups of data are obtained, the deviation can also be reduced by removing the maximum value and / or the minimum value.

[0081] In an exemplary embodiment, m is 3 and n is 2.

[0082] In an exemplary embodiment, the touch area of ​​the touch panel includes three touch sub-areas: a first touch sub-area, a second touch sub-area and a third touch sub-area, and the three touch sub-areas are adjacent to each other; the touch scanning channel includes a first touch scanning channel, a second touch scanning channel and a third touch scanning channel, wherein the second touch sub-area and the third touch sub-area both include a third touch unit to form a first touch scanning channel located in the second touch sub-area and the third touch sub-area, the first touch sub-area and the third touch sub-area both include a first touch unit to form a second touch scanning channel located in the first touch sub-area and the third touch sub-area, and the first touch sub-area and the second touch sub-area both include a second touch unit to form a third touch scanning channel located in the first touch sub-area and the second touch sub-area;

[0083] Scanning the n touch sub-areas in one scanning cycle to obtain the touch point coordinates of the n touch sub-areas includes:

[0084] In a first scanning cycle, a touch drive signal is sent through the first touch scanning channel, and the touch drive signal is received through the second touch scanning channel and the third touch scanning channel to obtain the touch point coordinates of the second touch sub-area and the third touch sub-area;

[0085] In the second scanning period, a touch driving signal is sent through the second touch scanning channel, and the touch driving signal is received through the first touch scanning channel and the third touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area;

[0086] In the third scanning cycle, the touch drive signal is sent through the third touch scanning channel, and the touch drive signal is received through the first touch scanning channel and the second touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area. Or

[0087] In a first scanning cycle, a touch drive signal is sent through the first touch scanning channel and the second touch scanning channel, and a touch drive signal is received through the third touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the second touch sub-area;

[0088] In the second scanning period, the touch drive signal is sent through the second touch scanning channel and the third touch scanning channel, and the touch drive signal is received through the first touch scanning channel to obtain the touch point coordinates of the second touch sub-area and the third touch sub-area;

[0089] In the third scanning period, the touch driving signal is sent through the first touch scanning channel and the third touch scanning channel, and the touch driving signal is received through the second touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area.

[0090] By scanning only two touch sub-areas instead of the entire touch sub-area each time, the power consumption of each scan can be reduced.

[0091] The present disclosure also provides a touch panel driving device. Figure 5 As shown, it includes a channel converter and a touch circuit (Touch IC), and the touch circuit includes a driving unit and a receiving unit; wherein:

[0092] The driving unit is used to send a touch driving signal (or scan driving signal); the driving unit is connected to the channel converter;

[0093] The receiving unit is used to receive a touch driving signal; the receiving unit is connected to the channel converter;

[0094] The channel converter is connected to each touch scanning channel and is used to switch the connection between the same touch scanning channel and the driving unit or the receiving unit in different scanning cycles to achieve the state conversion of the touch scanning channel sending the driving signal and receiving the driving signal.

[0095] In an exemplary embodiment, the touch control circuit may further include a calculation reporting unit for reporting points according to n sets of touch point coordinates obtained for each touch point after m scanning cycles, where m is the number of touch sub-areas, m≥3, and n is a positive integer less than or equal to m.

[0096] In an exemplary embodiment, the channel converter (or may be called a drive-receive converter or a charge-discharge converter) can realize the conversion of the drive and receive states of the same channel in different scanning cycles. The channel converter can realize the line switching with the drive and receive units through the existing relevant digital circuits. The channel connection can be minimized by the channel converter. The channel converter can be integrated into the Touch IC or placed outside the Touch IC separately.

[0097] In an exemplary embodiment, the Touch IC may include an active front end unit (AFE), a driving unit (Driving Unit), a receiving unit (Sensing Unit), a power control unit (Power control) and a calculation unit (Touch algorithm). The driving unit and the receiving unit are used to send or receive touch drive signals (charge and discharge processing) to each touch scanning channel through a channel converter. The active front end unit is used to process the received touch drive signals, including but not limited to charge amplification, low-pass filtering, digital-to-analog conversion, etc. The power control unit is used to supply power and control the power supply of the Touch IC. The calculation unit is used to optimize the calculation of the relevant touch point coordinate data recorded after charging and discharging, and then send the information to the host system through the interface to complete the reporting. Figure 6 shown.

[0098] The embodiment of the present disclosure is described below by taking a circular touch screen as an example. The touch screen is not limited to being circular, but may also be elliptical or polygonal.

[0099] The circular touch screen includes a touch structure layer, such as Figure 7 As shown, the touch structure layer includes at least three areas, a first touch sub-area (hereinafter referred to as the first area or area I), a second touch sub-area (hereinafter referred to as the second area or area II) and a third touch sub-area (hereinafter referred to as the third area or area III), each area includes two types of touch units, wherein: the first area includes a plurality of first touch units 101 and a plurality of second touch units 201; the second area includes a plurality of second touch units 201 and a plurality of third touch units 301; the third area includes a plurality of first touch units and a plurality of third touch units.

[0100] In the first area, the first touch units 101 have a line shape extending along the first extension direction D1, and multiple first touch units 101 are arranged in sequence along the second extension direction D2. The second touch units 201 have a line shape extending along the second extension direction D2, and multiple second touch units 201 are arranged in sequence along the first extension direction D1.

[0101] In this embodiment, each first touch control unit 101 includes a plurality of first touch control electrodes 10 and a first connection portion 11 arranged in sequence along the first extension direction D1, and the plurality of first touch control electrodes 10 and the plurality of first connection portions 11 are alternately arranged and connected in sequence. Each second touch control unit 201 includes a plurality of second touch control electrodes 20 arranged in sequence along the second extension direction D2, and the plurality of second touch control electrodes 20 are arranged at intervals, and adjacent second touch control electrodes 20 are connected to each other through second connection portions 21. The first touch control electrodes 10 and the second touch control electrodes 20 may be arranged in the same layer, and the layer where the second connection portion 21 is located may be different from the layer where the first touch control electrodes 10 and the second touch control electrodes 20 are located. The first touch control electrodes 10 and the second touch control electrodes 20 are arranged alternately. Figure 8 An example of a connection relationship between the first touch control electrode 10 and the second touch control electrode 20 is given.

[0102] In the second area, the second touch unit 201 has a linear shape extending along the third extension direction D3, and multiple second touch units 201 are arranged in sequence along the first extension direction D1. The third touch unit 301 has a linear shape extending along the first extension direction D1, and multiple third touch units 301 are arranged in sequence along the third extension direction D3. The first extension direction D1, the second extension direction D1 and the third extension direction intersect each other, and any two directions differ by 60°.

[0103] Each second touch control unit 201 includes a plurality of second touch control electrodes 20 and a second connection portion 21 sequentially arranged along the third extension direction D3, the plurality of second touch control electrodes 20 are arranged at intervals, and adjacent second touch control electrodes 20 are connected to each other through the second connection portion 21. Each third touch control unit 301 includes a plurality of third touch control electrodes 30 sequentially arranged along the first extension direction D1, the plurality of third touch control electrodes 30 and the plurality of third connection portions 31 are alternately arranged and sequentially connected. Fig. 9 An example of a connection relationship between the second touch electrode 20 and the third touch electrode 30 is given. In other embodiments, a plurality of second touch electrodes 20 and a plurality of second connection portions 21 may be alternately arranged and connected in sequence; a plurality of third touch electrodes 30 are arranged at intervals, and adjacent third touch electrodes 30 may be connected to each other through third connection portions 31. Alternatively, the second touch electrode 20 and the third touch electrode 30 may be arranged in the same layer, and the layer where the third connection portion 31 is located may be different from the layer where the second touch electrode 20 and the third touch electrode 30 are located. The second touch electrodes 20 and the third touch electrodes 30 are arranged alternately. The present disclosure does not limit this.

[0104] In the third area, the first touch unit 101 has a line shape extending along the third extension direction D3, and multiple first touch units 101 are arranged in sequence along the second extension direction D2. The third touch unit 301 has a line shape extending along the second extension direction D2, and multiple third touch units 301 are arranged in sequence along the third extension direction D3.

[0105] Each first touch control unit 101 includes a plurality of first touch control electrodes 10 and a first connection portion 11 arranged in sequence along the third extension direction D3, and the plurality of first touch control electrodes 10 and the plurality of first connection portions 11 are alternately arranged and connected in sequence. Each third touch control unit 301 includes a plurality of third touch control electrodes 30 arranged in sequence along the second extension direction D2, and the plurality of third touch control electrodes 30 are arranged at intervals, and adjacent third touch control electrodes 30 are connected to each other through third connection portions 31. The first touch control electrodes 10 and the third touch control electrodes 30 may be arranged in the same layer, and the layer where the third connection portion 31 is located may be different from the layer where the first touch control electrodes 10 and the third touch control electrodes 30 are located. The first touch control electrodes 10 and the third touch control electrodes 30 are arranged alternately. Fig.10 An example of a connection relationship between the first touch control electrode 10 and the third touch control electrode 30 is given.

[0106] In an exemplary embodiment, in the first region, a plurality of first touch electrodes 10, a plurality of second touch electrodes 20 and a plurality of first connecting portions 11 may be disposed in the same layer on the touch layer and may be formed by the same patterning process, and the first touch electrodes 10 and the first connecting portions 11 may be an integral structure connected to each other. The second connecting portions 21 may be disposed in a bridge layer, and adjacent second touch electrodes 20 may be connected to each other through vias, and an insulating layer may be disposed between the touch layer and the bridge layer.

[0107] In the second region, a plurality of second touch electrodes 20 may be arranged in the touch layer, a plurality of third touch electrodes 30 and a plurality of third connecting portions 31 and a second connecting portion 21 may be arranged in the same layer on the bridge layer, and may be formed by the same patterning process, and the third touch electrodes 30 and the third connecting portions 31 may be an integral structure connected to each other. The second connecting portions 21 arranged in the bridge layer may connect adjacent second touch electrodes 20 to each other through vias.

[0108] In the third region, the plurality of first touch electrodes 10 and the plurality of first connecting portions 11 may be disposed in the same layer on the touch layer and may be formed by the same patterning process, and the first touch electrodes 10 and the first connecting portions 11 may be an integrated structure connected to each other. The plurality of third touch electrodes 30 and the plurality of third connecting portions 31 may be disposed in the same layer on the bridge layer and may be formed by the same patterning process, and the third touch electrodes 30 and the third connecting portions 31 may be an integrated structure connected to each other.

[0109] For the sake of clarity, the positions of the touch electrodes and the connecting parts are described above in different regions. Those skilled in the art will know that all structures in the touch layer (including the first touch electrode 10, the second touch electrode 20 and the first connecting part 11) can be formed by the same patterning process, and all structures in the bridging layer (including the third touch electrode 30, the third connecting part 31 and the second connecting part 21) can be formed by the same patterning process.

[0110] The above implementation is only an example. In other possible implementations, the structure of the touch layer may include the first touch electrode 10, the second touch electrode 20 and the second connection part 21, and the structure of the bridge layer may include the third touch electrode 30, the third connection part 31 and the first connection part 11. The second touch electrode 20 and the second connection part 21 may be an integrated structure connected to each other, the third touch electrode 30 and the third connection part 31 may be an integrated structure connected to each other, and the first connection part 11 may be provided in the bridge layer, and the adjacent first touch electrodes 10 are connected to each other through vias.

[0111] In the exemplary embodiment of the touch structure layer, the first touch electrode 10, the second touch electrode 20 and the third touch electrode 30 can be rectangular, and in the touch area, one touch electrode includes four adjacent sides: a first side, a second side, a third side and a fourth side, wherein the first side and the third side are arranged oppositely, the second side and the fourth side are arranged oppositely, the length of the first side is equal to the length of the third side, the length of the second side is equal to the length of the fourth side, and the length of the first side is greater than the length of the second side. In the first area, the second side and the fourth side of the first touch electrode, and the second side and the fourth side of the second touch electrode extend along the third extension direction D3, and the first side and the third side of the first touch electrode and the first side and the third side of the second touch electrode extend in a direction perpendicular to the third extension direction D3. In the second area, the second side and the fourth side of the second touch electrode, and the second side and the fourth side of the third touch electrode extend along the second extension direction D2, and the first side and the third side of the second touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the second extension direction D2. In the third region, the second side and the fourth side of the first touch electrode and the second side and the fourth side of the third touch electrode extend along the first extension direction D1, and the first side and the third side of the first touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the first extension direction D1.

[0112] In some possible implementations, the shape may have any one or more of a rhombus, a triangle, a square, a trapezoid, a pentagon, a hexagon and other polygons, which is not limited in the present disclosure.

[0113] In an exemplary embodiment, the shape of the electrode at the boundary of the region is incomplete. For example, in this embodiment, at the boundary between the first region and the second region, the area of ​​a second touch electrode 20 in the first region that is adjacent to the second region is 1 / 2 (1 / 2 rectangle, such as a triangle) of the area of ​​the complete second touch electrode in the first region, and the area of ​​a second touch electrode 20 in the second region that is adjacent to the first region is 1 / 2 of the area of ​​the complete second touch electrode in the second region. Therefore, 1 / 2 of the second touch electrodes in the first region that are adjacent to the second region and 1 / 2 of the second touch electrodes in the second region that are adjacent to the first region form a polygonal second touch electrode, and the electrode is symmetrical along the boundary line between the first region and the second region. Similarly, 1 / 2 of the first touch electrodes in the first region that are adjacent to the third region and 1 / 2 of the first touch electrodes in the third region that are adjacent to the first region form a polygonal first touch electrode, and the electrode is symmetrical along the boundary line between the first region and the third region. 1 / 2 of the third touch electrodes in the second region adjacent to the third region and 1 / 2 of the third touch electrodes in the adjacent third region adjacent to the second region form a polygonal third touch electrode that is symmetrical along the boundary line between the second region and the third region.

[0114] like Fig.11 As shown, the second area and the third area both include a third touch unit, and the third touch unit in the second area is connected to the third touch unit in the third area at the boundary between the second area and the third area. Since the third touch unit has a line shape extending along the first extension direction D1 in the second area and a line shape extending along the second extension direction D2 in the third area, the third touch unit can form a first channel (Ax channel) for charging and discharging in the D1 direction + D2 direction. At this time, the third touch electrode 30 can be a driving electrode (Tx), and the second touch electrode 20 located in the second area and the first touch electrode 10 located in the third area can be a sensing electrode (Rx), or the third touch electrode can be a sensing electrode Rx, and the second touch electrode and the first touch electrode can be a driving electrode Tx.

[0115] The first area and the third area both include a first touch unit, and the first touch unit in the first area is connected to the first touch unit in the third area at the boundary between the first area and the third area. Since the first touch unit has a line shape extending along the first extension direction D1 in the first area and a line shape extending along the third extension direction D3 in the third area, the first touch unit can form a second channel (Bx channel) for charging and discharging in the D1 direction + D3 direction. At this time, the first touch electrode 10 can be a driving electrode Tx, the second touch electrode 20 located in the first area and the third touch electrode 30 located in the third area can be a sensing electrode Rx, or the first touch electrode can be a sensing electrode Rx, and the second touch electrode and the third touch electrode can be a driving electrode Tx.

[0116] The first area and the second area both include a second touch unit, and the second touch unit in the first area is connected to the second touch unit in the second area at the boundary of the first area and the second area. Since the second touch unit has a linear shape extending along the second extension direction D2 in the first area and a linear shape extending along the third extension direction D3 in the second area, the second touch unit can form a third channel (Cx channel) for charging and discharging in the D2 direction + D3 direction. At this time, the second touch electrode 20 can be a driving electrode Tx, and the first touch electrode 10 located in the first area and the third touch electrode 30 located in the third area can be a sensing electrode Rx, or the second touch electrode can be a sensing electrode Rx, and the first touch electrode and the third touch electrode can be a driving electrode Tx.

[0117] like Fig.11 As shown, the circular touch structure layer includes three channels A, B, and C in different positions and directions. In this embodiment, each channel acts on two 1 / 3 areas of the circular touch screen. Channel A acts on the second area and the third area; channel B acts on the first area and the third area; channel C acts on the first area and the second area. In other words, the second area and the third area constitute channel A; the first area and the third area constitute channel B; the first area and the second area constitute channel C. In the figure, each channel can have 4 sub-channels.

[0118] The time-sharing driving method in this embodiment refers to driving and scanning a 1 / m (such as 1 / 3) area within n (such as 2) scanning cycles. The partitioning driving method in this embodiment refers to driving and scanning n 1 / m (such as two 1 / 3) areas within one scanning cycle.

[0119] In one scanning cycle, one channel is charged and discharged multiple times, and then the coordinates are recorded, and 4 (or 8) sub-channels are charged and discharged in sequence. Three scanning cycles T1, T2, and T3 are charged and discharged in sequence. One scanning cycle performs four (or eight) scans, and after three scanning cycles, two touch detections of the entire touch area with different reference coordinates are completed. In other words, each area is scanned twice in three scanning cycles, so each reference coordinate obtains two touch detections, that is, the entire touch sub-area realizes two touch detections, and a point reporting feedback is performed after two touch detections. By changing the original scanning of 8 channels in one scanning cycle to scanning only 4 sub-channels in one scanning cycle, and performing point reporting feedback once in three cycles, the charging and discharging and point reporting processes are reduced, and the power consumption of touch is reduced.

[0120] The different reference coordinates depend on the positions of the charging and discharging channels. The same position coordinates may have different reporting results under the influence of different charging and discharging channels (the coordinates may be located at the near end or far end of the channel). This is because the same coordinate position has different positions in different scanning channels. It may be located at the near end of channel A (the end close to the charging side), but at the far end of channel B (the end away from the charging side). Since there is a difference in capacitance between the near end and the far end of the channel (especially at high frequencies), the capacitance at the near end is greater than that at the far end, resulting in differences in touch effects and affecting touch accuracy.

[0121] To this end, the present embodiment adopts an optimized reporting method (i.e., coordinate calculation method): after each charge and discharge, the coordinate data is recorded but the point is not reported. After the three scanning cycles T1, T2, and T3 are all completed, that is, after the entire touch area is scanned twice, the coordinates are optimized and calculated, and a reporting is completed. The optimization calculation can use the mean method to average the horizontal and vertical coordinates of the two touch detection records: x = (x1 + x2) / 2; y = (y1 + y2) / 2, and obtain the final optimized coordinates (x, y). The optimization calculation takes into account the difference in capacitance at the near and far ends of the channel, reduces the reporting deviation, and improves touch accuracy. Compared with the method of performing a calculation and reporting method after each channel is scanned in the prior art, the embodiment of the present disclosure reduces computing power consumption and improves touch accuracy.

[0122] Compared with the existing design scheme, the embodiment of the present disclosure can reduce touch power consumption and improve touch accuracy by time-sharing and zone-sharing driving and optimizing reporting points.

[0123] The present disclosure is described below by means of two exemplary embodiments.

[0124] Exemplary Embodiment 1

[0125] This exemplary embodiment provides a touch control driving method. Fig.12 As shown, the following steps are included:

[0126] Step 21, channel A is charged and discharged multiple times, and coordinate data is recorded;

[0127] Step 22, channel B is charged and discharged multiple times, and coordinate data is recorded;

[0128] Step 23, charging and discharging the C channel multiple times, and recording the coordinate data;

[0129] Step 24, complete the coordinate calculation and feed it back to the system reporting point.

[0130] In this embodiment, every 1 / 3 area of ​​the touch area is driven and scanned in two scanning cycles (time-sharing drive). The first area (I area) is driven and scanned in the second scanning cycle T2 and the third scanning cycle T3; the second area (II area) is driven and scanned in the first scanning cycle T1 and the third scanning cycle T3; the third area (III area) is driven and scanned in the first scanning cycle T1 and the second scanning cycle T2.

[0131] In this embodiment, two 1 / 3 areas are driven and scanned in one scanning cycle (partition drive). In the first scanning cycle T1, area II and area III are driven and scanned; in the second scanning cycle T2, area I and area III are driven and scanned; in the third scanning cycle T3, area I and area II are driven and scanned. In this embodiment, each channel includes 4 charging and discharging electron channels.

[0132] Scanning sequence Fig.13 As shown in the figure, T1, T2, and T3 are scanning cycles, Tc is the touch scanning time (or charging and discharging time), Tj is the coordinate recording time, Ty is the coordinate calculation time, and Tb is the total time. X1, X2, X3, and X4 represent a sub-channel in the three channels A, B, and C respectively.

[0133] In one scanning cycle:

[0134] The first scanning cycle T1: Channel A performs multiple charges and discharges, then records the coordinates of areas II and III, and the four sub-channels perform charge and discharge scans in turn;

[0135] The second scanning period T2: Channel B performs multiple charges and discharges, and then records the coordinates of areas I and III, and the four sub-channels perform charge and discharge scans in turn;

[0136] The third scanning period T3: the C channel is charged and discharged multiple times, and then the coordinates located in the I area and the II area are recorded, and the four sub-channels are charged and discharged in sequence.

[0137] The three scanning cycles T1, T2, and T3 perform charge and discharge scanning in sequence, and 6 different scanning orders can be obtained by permutation and combination: A→B→C, A→C→B, B→A→C, B→C→A, C→A→B, and C→B→A. In this embodiment, one scanning cycle performs four scans, and after three scanning cycles, the touch detection of the entire touch screen area (areas I, II, and III) with different reference coordinates is completed twice, and a point reporting feedback is performed. The different reference coordinates depend on the position of the charge and discharge channel. The same position coordinates have different point reporting results under the action of different charge and discharge channels (the coordinates may be located at the near end or far end of the channel). There are differences in the capacitance at the near end and the far end of the channel, and there are also differences in the touch effect. Using the mean method, the horizontal and vertical coordinates of the two touch detection records are averaged x=(x1+x2) / 2; y=(y1+y2) / 2 to obtain the final optimized coordinates (x, y).

[0138] The channel converter can realize the conversion of the driving and receiving states of the same channel in different scanning cycles. The channel converter realizes the line switching with the driving and receiving units through the existing relevant digital circuits. The channel converter minimizes the connection of the channel. The channel converter can be integrated into the Touch IC or placed outside the Touch IC separately.

[0139] First scanning period T1: channel A is connected to the driving unit for sending touch driving signals, and channels B and C are connected to the receiving unit for receiving touch driving signals;

[0140] Second scanning period T2: channel B is connected to the driving unit for sending touch driving signals, and channels A and C are connected to the receiving unit for receiving touch driving signals;

[0141] The third scanning period T3: the C channel is connected to the driving unit for sending the touch driving signal, and the A and B channels are connected to the receiving unit for receiving the touch driving signal.

[0142] Exemplary embodiment 2:

[0143] Another touch control driving method provided in this embodiment is as follows: Fig.14 As shown, the following steps are included:

[0144] Step 31, charging and discharging channels A and B multiple times, and recording coordinate data;

[0145] Step 32, charging and discharging channels B and C multiple times, and recording coordinate data;

[0146] Step 33, channels A and C are charged and discharged multiple times, and coordinate data are recorded;

[0147] Step 34, complete the coordinate calculation and feed it back to the system reporting point.

[0148] In this embodiment, the touch area also adopts the time-sharing drive and partition drive solutions:

[0149] Time-sharing drive: every 1 / 3 area is driven and scanned in two scanning cycles. Different from the previous exemplary embodiment, in this exemplary embodiment, area I is driven and scanned in the first scanning cycle T1 and the third scanning cycle T3; area II is driven and scanned in the first scanning cycle T1 and the second scanning cycle T2; area III is driven and scanned in the second scanning cycle T2 and the third scanning cycle T3.

[0150] Partition drive: two 1 / 3 areas are driven and scanned in one scanning cycle. Different from the previous exemplary embodiment, in this exemplary embodiment, the first scanning cycle T1 will drive and scan area I and area II; the second scanning cycle T2 will drive and scan area II and area III; the third scanning cycle T3 will drive and scan area I and area III. In this embodiment, each channel includes 4 charging and discharging electron channels.

[0151] Scan timing diagram Fig.15 As shown in the figure, T1, T2, T3 are scanning cycles, Tc is touch scanning time (or charging and discharging time), Tj is coordinate recording time, Ty is coordinate calculation time, and Tb is total time. X1, X2, X3 and X4, Y1, Y2, Y3 and Y4 represent a sub-channel in the three channels A, B and C respectively.

[0152] In one scanning cycle:

[0153] The first scanning cycle T1: Channels A and B are charged and discharged multiple times, and then the coordinates located in areas I and II are recorded, and the eight sub-channels are charged and discharged in sequence;

[0154] The second scanning period T2: channels B and C are charged and discharged multiple times, and then the coordinates of areas II and III are recorded, and the eight sub-channels are charged and discharged in turn;

[0155] The third scanning period T3: channels A and C are charged and discharged multiple times, and then the coordinates located in areas I and III are recorded, and the eight sub-channels are charged and discharged in sequence.

[0156] The three scanning cycles T1, T2, and T3 perform charge and discharge scanning in sequence, and 6 different scanning orders can be obtained by permutation and combination: AB→BC→AC, AB→AC→BC, BC→AB→AC, BC→AC→AB, AC→AB→BC, and AC→BC→AB. In this embodiment, one scanning cycle performs eight scans, and after three scanning cycles, two touch detections of the entire touch screen area (areas I, II, and III) with different reference coordinates are completed, and a point reporting feedback is performed. The different reference coordinates depend on the position of the charge and discharge channel. The same position coordinates have different point reporting results under the action of different charge and discharge channels (the coordinates may be located at the near end or the far end of the channel). There are differences in the capacitance at the near end and the far end of the channel, and there are also differences in the touch effect. Using the mean method, the horizontal and vertical coordinates of the two touch detection records are averaged x=(x1+x2) / 2; y=(y1+y2) / 2 to obtain the final optimized coordinates (x, y).

[0157] The channel converter can realize the conversion of the driving and receiving states of the same channel in different scanning cycles. The channel converter realizes the line switching with the driving and receiving units through the existing relevant digital circuits. The channel converter minimizes the connection of the channel. The channel converter can be integrated into the Touch IC or placed outside the Touch IC separately.

[0158] First scanning period T1: channels A and B are connected to the driving unit for sending touch driving signals, and channel C is connected to the receiving unit for receiving touch driving signals;

[0159] Second scanning period T2: channels B and C are connected to the driving unit for sending touch driving signals, and channel A is connected to the receiving unit for receiving touch driving signals;

[0160] The third scanning period T3: the A and C channels are connected to the driving unit for sending the touch driving signal, and the B channel is connected to the receiving unit for receiving the touch driving signal.

[0161] According to the above embodiments, the circular touch screen described in the embodiment of the present disclosure is provided with three channels of different positions and directions, each channel can act on two 1 / 3 areas of the circular touch screen; through time-sharing driving, one 1 / 3 area is driven and scanned within two scanning cycles; through partition driving, two 1 / 3 areas are driven and scanned within one scanning cycle; in addition, the embodiment of the present disclosure also optimizes the reporting point: after the three scanning cycles are completed, the optimization calculation is performed and the reporting point is completed; through time-sharing partition driving and optimization of the reporting point, the useless charging and discharging and reporting process can be reduced, and the power consumption of the touch control is reduced; the optimization calculation takes into account the difference in the capacitance of the near and far ends of the channel, reduces the reporting point deviation, and improves the touch control accuracy. The driving device includes a channel converter, a Touch IC, etc., and the channel converter can realize the conversion of the driving and receiving states of the same channel in different scanning cycles, and minimize the connection of the channel.

[0162] The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0163] For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" another element, or there may be an intermediate element.

[0164] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A touch panel, characterized in that: A touch control area includes at least m touch control sub-areas and m types of touch control units, each touch control sub-area includes two types of touch control units, the two types of touch control units in each touch control sub-area are arranged at intervals, two adjacent touch control sub-areas include the same type of touch control units, and the same touch control units included in the two adjacent touch control sub-areas are connected at the boundary of the two touch control sub-areas, and m is a positive integer greater than or equal to 3; The touch structure layer at least includes a first touch sub-region, a second touch sub-region and a third touch sub-region, the first touch sub-region includes a plurality of first touch units and a plurality of second touch units, the second touch sub-region includes a plurality of second touch units and a plurality of third touch units, and the third touch sub-region includes a plurality of first touch units and a plurality of third touch units; At a boundary between the second touch control sub-area and the third touch control sub-area, the third touch control unit of the second touch control sub-area is connected to the third touch control unit of the third touch control sub-area; At a boundary between the first touch control sub-area and the third touch control sub-area, the first touch control unit of the first touch control sub-area is connected to the first touch control unit of the third touch control sub-area; At a boundary between the first touch control sub-area and the second touch control sub-area, the second touch control unit of the first touch control sub-area is connected to the second touch control unit of the second touch control sub-area; In the first touch sub-area, the first touch unit has a line shape extending along a first extension direction, and the second touch unit has a line shape extending along a second extension direction; In the second touch sub-area, the second touch unit has a line shape extending along a third extension direction, and the third touch unit has a line shape extending along the first extension direction; In the third touch sub-area, the first touch unit has a line shape extending along a third extension direction, and the third touch unit has a line shape extending along a second extension direction; The first extension direction, the second extension direction and the third extension direction intersect; In the first touch sub-area, each of the first touch units includes a plurality of first touch electrodes and a first connection portion sequentially arranged along a first extension direction, and the plurality of first touch electrodes are connected through the plurality of first connection portions; each of the second touch units includes a plurality of second touch electrodes sequentially arranged along a second extension direction, and the plurality of second touch electrodes are connected through the second connection portion; In the second touch sub-area, each of the second touch units includes a plurality of second touch electrodes sequentially arranged along a third extension direction and a second connecting portion, and the plurality of second touch electrodes are connected through the second connecting portion; each of the third touch units includes a plurality of third touch electrodes sequentially arranged along the first extension direction, and the plurality of third touch electrodes are connected through the third connecting portion; In the third touch sub-area, each of the first touch units includes a plurality of first touch electrodes and a first connecting portion sequentially arranged along a third extension direction, and the plurality of first touch electrodes are connected through the first connecting portion; each of the third touch units includes a plurality of third touch electrodes sequentially arranged along the second extension direction, and the plurality of third touch electrodes are connected through the third connecting portion; The first touch electrode, the first connecting portion and the second touch electrode are arranged in the same layer, and the second connecting portion, the third touch electrode and the third connecting portion are arranged in the same layer, which is different from the layer where the first touch electrode, the first connecting portion and the second touch electrode are located; or The first touch electrode, the second touch electrode and the second connecting portion are arranged in the same layer, and the first connecting portion, the third touch electrode and the third connecting portion are arranged in the same layer, which is different from the layer where the first touch electrode, the second touch electrode and the second connecting portion are located.

2. The touch panel according to claim 1, characterized in that: The first touch electrode, the second touch electrode and the third touch electrode have a rectangular shape, each touch electrode comprises a first side, a second side, a third side and a fourth side, wherein the first side and the third side are arranged opposite to each other, the second side and the fourth side are arranged opposite to each other, the length of the first side is equal to the length of the third side, the length of the second side is equal to the length of the fourth side, and the length of the first side is greater than the length of the second side; In the first touch sub-area, the second side and the fourth side of the first touch electrode and the second side and the fourth side of the second touch electrode extend along a third extension direction, and the first side and the third side of the first touch electrode and the first side and the third side of the second touch electrode extend in a direction perpendicular to the third extension direction; In the second touch sub-area, the second side and the fourth side of the second touch electrode and the second side and the fourth side of the third touch electrode extend along a second extension direction, and the first side and the third side of the second touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the second extension direction; In the third touch sub-area, the second side and the fourth side of the first touch electrode and the second side and the fourth side of the third touch electrode extend along a first extension direction, and the first side and the third side of the first touch electrode and the first side and the third side of the third touch electrode extend in a direction perpendicular to the first extension direction.

3. The touch panel according to claim 2, characterized in that: At the boundary between the first touch control sub-region and the third touch control sub-region, the incomplete first touch control electrode in the first touch control sub-region adjacent to the third touch control sub-region and the incomplete first touch control electrode in the third touch control sub-region adjacent to the first touch control sub-region form a polygonal first touch electrode; At the boundary between the second touch control sub-region and the third touch control sub-region, the incomplete third touch control electrode in the second touch control sub-region adjacent to the third touch control sub-region and the incomplete third touch control electrode in the third touch control sub-region adjacent to the second touch control sub-region form a polygonal third touch control electrode; At the boundary between the first touch sub-region and the second touch sub-region, the incomplete second touch electrode in the first touch sub-region adjacent to the second touch sub-region and the incomplete second touch electrode in the second touch sub-region adjacent to the first touch sub-region form a polygonal second touch electrode.

4. The touch panel according to claim 3, characterized in that: At the boundary between the first touch control sub-region and the third touch control sub-region, the first touch control electrode in the first touch control sub-region adjacent to the third touch control sub-region is a first triangle, the first touch control electrode in the third touch control sub-region adjacent to the first touch control sub-region is a second triangle, and the first touch electrode of the first triangle and the first touch electrode of the second triangle form a polygonal first touch electrode; At the boundary between the second touch sub-region and the third touch sub-region, the third touch electrode in the second touch sub-region adjacent to the third touch sub-region is a third triangle, and the third touch electrode in the third touch sub-region adjacent to the first touch sub-region is a fourth triangle; the third touch electrode of the third triangle and the third touch electrode of the fourth triangle form a polygonal third touch electrode; At the boundary between the first touch sub-area and the second touch sub-area, the second touch electrode in the first touch sub-area adjacent to the second touch sub-area is a fifth triangle, and the second touch electrode in the second touch sub-area adjacent to the first touch sub-area is a sixth triangle; the second touch electrode of the fifth triangle and the second touch electrode of the sixth triangle form a polygonal second touch electrode.

5. The touch panel according to claim 2, characterized in that: The polygonal first touch control electrode at the boundary between the first touch control sub-region and the third touch control sub-region is symmetrical along the boundary line between the first touch control sub-region and the third touch control sub-region; The polygonal third touch control electrode at the boundary between the second touch control sub-region and the third touch control sub-region is symmetrical along the boundary line between the second touch control sub-region and the third touch control sub-region; The polygonal second touch control electrode at the boundary between the first touch control sub-region and the second touch control sub-region is symmetrical along the boundary line between the first touch control sub-region and the second touch control sub-region.

6. The touch panel according to any one of claims 1 to 5, characterized in that: The touch area is circular, elliptical or polygonal.

7. A method for driving a touch panel, characterized in that: The touch panel is a touch panel according to any one of claims 1 to 6, and the driving method comprises: Scan the n touch sub-areas in one scanning cycle to obtain the touch point coordinates of the n touch sub-areas; After m scanning cycles, each touch sub-area is scanned for n scanning cycles, and each touch point obtains n sets of touch point coordinates. The point is reported according to the n sets of touch point coordinates of each touch point, where m is the number of touch sub-areas, m≥3, and n is a positive integer less than or equal to m.

8. The driving method according to claim 7, characterized in that: The reporting of the points according to the n groups of touch point coordinates of each touch point includes: For any touch point, the coordinates of the n groups of touch points are averaged to obtain the reported point coordinates.

9. The driving method according to claim 7, characterized in that: The touch area of ​​the touch panel includes a first touch sub-area, a second touch sub-area and a third touch sub-area, the second touch sub-area and the third touch sub-area both include a third touch unit to form a first touch scanning channel located in the second touch sub-area and the third touch sub-area, the first touch sub-area and the third touch sub-area both include a first touch unit to form a second touch scanning channel located in the first touch sub-area and the third touch sub-area, and the first touch sub-area and the second touch sub-area both include a second touch unit to form a third touch scanning channel located in the first touch sub-area and the second touch sub-area; The scanning of n touch sub-areas in one scanning cycle to obtain the touch point coordinates of the n touch sub-areas includes: In a first scanning cycle, a touch drive signal is sent through the first touch scanning channel, and the touch drive signal is received through the second touch scanning channel and the third touch scanning channel to obtain the touch point coordinates of the second touch sub-area and the third touch sub-area; In the second scanning period, a touch driving signal is sent through the second touch scanning channel, and the touch driving signal is received through the first touch scanning channel and the third touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area; In a third scanning period, a touch drive signal is sent through the third touch scanning channel, and the touch drive signal is received through the first touch scanning channel and the second touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area; or, In a first scanning cycle, a touch drive signal is sent through the first touch scanning channel and the second touch scanning channel, and a touch drive signal is received through the third touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the second touch sub-area; In the second scanning period, the touch drive signal is sent through the second touch scanning channel and the third touch scanning channel, and the touch drive signal is received through the first touch scanning channel to obtain the touch point coordinates of the second touch sub-area and the third touch sub-area; In the third scanning period, the touch driving signal is sent through the first touch scanning channel and the third touch scanning channel, and the touch driving signal is received through the second touch scanning channel to obtain the touch point coordinates of the first touch sub-area and the third touch sub-area.

10. A touch panel driving device, characterized in that: The touch panel is a touch panel as claimed in any one of claims 1 to 6, the driving device comprises: a channel converter and a touch circuit, the touch circuit comprises a driving unit and a receiving unit; wherein: The driving unit is used to send a touch driving signal; the driving unit is connected to the channel converter; The receiving unit is used to receive a touch driving signal; the receiving unit is connected to the channel converter; The channel converter is connected to each touch scanning channel and is used to switch the connection between the same touch scanning channel and the driving unit or the receiving unit in different scanning cycles to achieve the state conversion of the touch scanning channel sending the driving signal and receiving the driving signal.

11. The driving device according to claim 10, characterized in that: The touch control circuit also includes a point calculation unit for reporting points according to n groups of touch point coordinates obtained for each touch point after m scanning cycles, where m is the number of touch sub-areas, m≥3, and n is a positive integer less than or equal to m.

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