Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings in the prior art, it is desirable to provide a touch electrode structure, a touch display panel, and a driving method and a driving device thereof, which can implement single-side routing, shorten routing length, improve effective utilization rate of the touch panel, and achieve the purpose of narrowing a touch panel frame.
In a first aspect, the application provides a touch electrode structure, which comprises an electrode row formed by a plurality of electrode arrays and arranged along a first direction and an electrode column formed by a plurality of electrode arrays and arranged along a second direction, wherein an electrode positioned at the lower left corner is a first reference electrode and a second reference electrode adjacent to the first reference electrode on the same electrode row, the first reference electrode is one of the first electrode and the second electrode, and the second reference electrode is the other of the first electrode and the second electrode;
The adjacent electrode rows are arranged at intervals, and the adjacent electrode columns are arranged at intervals;
the first electrodes and the second electrodes are alternately arranged on the same electrode row; the first electrodes and the second electrodes are alternately arranged on the same electrode column;
the first reference electrode is electrically connected with an electrode positioned at the right upper corner of the reference electrode on the next electrode row in a first diagonal direction, and the second reference electrode is electrically connected with an electrode positioned at the left upper corner of the second reference electrode on the next electrode row in a second diagonal direction;
electrodes of the same type as the first reference electrode on each electrode row are electrically connected with the electrodes of the same type in a first diagonal direction to form a plurality of first conductive circuits;
electrodes of the same type as the second reference electrode on each electrode row are electrically connected with the electrodes of the same type in a second diagonal direction to form a plurality of second conductive circuits;
The first electrodes on the outermost electrode columns are electrically connected with the adjacent second electrodes, so that the first conductive circuits where the first electrodes are located and the second conductive circuits where the second electrodes are located are connected to form mixed conductive circuits, and the number of the electrodes on each mixed conductive circuit is equal to that of the electrodes on each electrode column.
Optionally, the electrode includes a first electrode layer and a second electrode layer, wherein the first electrode is disposed on the first electrode layer, and the second electrode is disposed on the second electrode layer.
Optionally, the first electrode is connected with the first electrode through a first connecting wire, and the first connecting wire is positioned on the first electrode layer;
The second electrode is connected with the second electrode through a second connecting wire, and the second connecting wire is positioned on the second electrode layer.
Optionally, the first electrode and the second electrode are electrically connected through a first via hole.
Optionally, the electrode has a rectangular shape, a first side of the electrode is parallel to the first direction, and a second side of the electrode is parallel to the second direction.
Optionally, the plurality of electrodes form a plurality of independent conductive channels, the number of the conductive channels is the same as the number of the electrodes on each electrode row, the number of the electrodes on each conductive channel is the same as the number of the electrodes on each electrode column, and the conductive channels are one of a first conductive circuit, a second conductive circuit and a mixed conductive circuit.
In a second aspect, the present application provides a touch display panel, including any one of the above touch electrode structures and a driving device for driving the touch electrode, where the driving device is disposed at one side of an electrode row, and the driving device is connected to an electrode of an outermost electrode row through a plurality of signal lines, where one signal line corresponds to one electrode on the outermost electrode row, and each signal line is electrically connected to a conductive channel where the electrode is located through the electrode, and the conductive channel is electrically connected to a first conductive line where the electrode is located, a second conductive line where the electrode is located, or a mixed conductive line where the electrode is located.
Optionally, the touch electrode structure is located in the display area, and the driving device is located in the frame area.
In a third aspect, the present application provides a touch display device, including a touch display panel as described above.
In a fourth aspect, the present application provides a method for driving a touch display panel, where the method is used for driving the touch display panel as described in any one of the above, and the method includes:
Scanning the first n-1 conductive channels in sequence according to a preset sequence in a touch stage;
When the ith conductive channel corresponding to the ith signal line is scanned through the signal line, the sensing signals on the sensing channels are received simultaneously, wherein the sensing channels are from the (i+1) th conductive channel to the (n) th conductive channel, and i= (1, 2,., n-1).
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
according to the touch electrode structure provided by the embodiment of the application, the electrodes are connected in the diagonal direction to form the diagonal crossing channel by changing the connection mode of the electrodes, the upper electrode layer and the adjacent lower electrode layer are lapped at the left edge and the right edge, and all the wires are led out from the lower frame, so that the wires are not needed at the two sides and the upper side of the touch functional layer, the length of part of the wires is shortened, the effective utilization rate of the touch screen is improved, and the purpose of narrowing the frame of the touch screen is realized.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The mutual capacitance type touch electrode structure comprises a touch driving electrode and a touch sensing electrode, wherein the touch driving electrode and the touch sensing electrode form a mutual capacitance for touch sensing, the touch driving electrode is used for inputting an excitation signal (touch driving signal), and the touch sensing electrode is used for outputting a touch sensing signal. By inputting an excitation signal to, for example, a longitudinally extending touch drive electrode, a touch sense signal is received from, for example, a laterally extending touch sense electrode, such that the magnitude of the capacitance of the lateral and longitudinal electrode coupling point (e.g., cross-point) can be obtained. When a finger touches the capacitive screen, the coupling between the touch point accessory touch drive electrode and the touch sense electrode is affected, thereby changing the capacitance between the two electrodes. Coordinates of each touch point (cross point) can be calculated from the touch screen two-dimensional capacitance variation data.
In fig. 1, a prior art touch electrode structure is shown, comprising a plurality of first electrodes arranged laterally and a plurality of second electrodes arranged longitudinally. The first electrode is connected with the first electrode through a first connecting wire, and the second electrode is connected with the second electrode through a second connecting wire. The first electrode block and the second electrode block are of diamond structures, the first connecting line is a transverse wiring, the second connecting line is a longitudinal wiring, transverse scanning is realized through the first connecting line, and longitudinal scanning is realized through the second connecting line.
As described in the background art, the wiring modes are all arranged parallel to the long side and short side directions of the touch screen, so that wiring on the left side and the right side of the screen cannot be avoided, and the realization effect of a narrow frame is not ideal.
Referring to fig. 2 in detail, a touch electrode structure includes a plurality of electrode arrays, including a first electrode 1 and a second electrode 2, wherein the electrode arrays are formed in an electrode row arranged along a first direction X and an electrode column arranged along a second direction Y, the adjacent electrode rows are arranged at intervals, the adjacent electrode columns are arranged at intervals, the first electrode 1 and the second electrode 2 are alternately arranged on the same electrode row, and the first electrode 1 and the second electrode 2 are alternately arranged on the same electrode column.
It should be noted that, in the embodiment of the present application, the first direction X and the second direction Y are defined to correspond to the boundary directions of the display area, and may be selected according to different application scenarios or different devices when specifically set. Of course, in other embodiments, the first direction X and the second direction Y may be interchanged, and the first direction X may be a pixel column arrangement direction, and the second direction Y may be a pixel row arrangement direction.
In the embodiment of the present application, the shapes of the first electrode 1 and the second electrode 2 may be any shape, for example, triangle, quadrangle, circle, or other shapes, which is not limited in the embodiment of the present application. In an embodiment of the present application, the shape of the electrode is preferably rectangular, a first side of the electrode is parallel to the first direction X, and a second side of the electrode is parallel to the second direction Y.
The electrodes at the lower left corner are a first reference electrode P1 and a second reference electrode P2 adjacent to the first reference electrode P1 on the same electrode row, wherein the first reference electrode P1 is one of the first electrode 1 and the second electrode 2, and the second reference electrode P2 is the other of the first electrode 1 and the second electrode 2. It should be noted that, in the embodiment of the present application, the selected reference electrodes are illustrated as four electrodes located at the lower left corner, and in other embodiments, other positions may be selected as reference electrodes, where the arrangement manner of the other positions is the same as that of the reference electrodes located at the lower left corner, and the present application is not repeated herein.
The first reference electrode P1 is electrically connected with an electrode positioned at the right upper corner of the reference electrode on the next electrode row in a first diagonal direction, the second reference electrode P2 is electrically connected with an electrode positioned at the left upper corner of the second reference electrode P2 on the next electrode row in a second diagonal direction, and the first diagonal direction and the second diagonal direction intersect.
In the embodiment of the present application, the "first diagonal direction" is defined as a direction from the lower left corner to the upper right corner, the "second diagonal direction" is defined as a direction from the lower right corner to the upper left corner, and the diagonal direction in the present application is a general direction, and the direction from the electrode of the same type to the electrode of the next adjacent same type is not limited to the general direction of the electrode of the same type, and the electrical connection between the two electrodes is not limited to the fixed edge position. The direction of the first diagonal and the direction of the second diagonal may be set differently according to different application scenarios, which is not limited by the present application. For example, for an electrode of rectangular configuration, a connection may be made between the vertex of the electrode and the vertex of the next adjacent electrode.
In the embodiment of the application, the connecting lines between the first electrodes 1 face in one same direction, and the connecting lines between the second electrodes 2 face in another same direction. Since the relative positions of the first electrode 1 and the second electrode 2 can be interchanged in different embodiments, the connection line between the electrodes has a relationship with the positional relationship of the electrodes in the embodiment of the present application.
In the embodiment of the present application, the four electrodes at the lower left corner are exemplified, for example, when the electrode at the lower left corner is the first electrode 1, the orientation of the connection line between the first electrode 1 and the adjacent first electrode 1 is the same as the first diagonal direction, and the orientation of the connection line between the second electrode 2 and the adjacent second electrode 2 is the same as the second diagonal direction. For example, when the electrode in the lower left corner is the second electrode 2, the direction of the connection line between the second electrode 2 and the adjacent second electrode 2 is the same as the first diagonal direction, and the direction of the connection line between the first electrode 1 and the adjacent first electrode 1 is the same as the second diagonal direction.
Therefore, when the electrode is arranged, the electrodes of the same type as the first reference electrode P1 on each electrode row are electrically connected with the electrodes of the same type in a first diagonal direction to form a plurality of first conductive circuits, and the electrodes of the same type as the second reference electrode P2 on each electrode row are electrically connected with the electrodes of the same type in a second diagonal direction to form a plurality of second conductive circuits.
In the embodiment of the present application, the first reference electrode P1 is taken as the first electrode 1, and the second reference electrode P2 is taken as the second electrode 2 for illustration. For each touch electrode on the touch substrate, the first electrode 1 is electrically connected with the first electrode 1 located at the upper right corner of the adjacent row, and the second electrode 2 is electrically connected with the second electrode 2 located at the upper left corner of the adjacent row. Thus, a plurality of parallel conductive traces are formed.
The first electrode 1 on the outermost electrode row is electrically connected with the adjacent second electrode 2, so that the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located are connected to form a mixed conductive circuit, and the number of the electrodes on each mixed conductive circuit is equal to that of the electrodes on each electrode row.
The electrodes form a plurality of independent conductive channels, the number of the conductive channels is the same as that of the electrodes on each electrode row, the number of the electrodes on each conductive channel is the same as that of the electrodes on each electrode column, and the conductive channels are one of a first conductive circuit, a second conductive circuit and a mixed conductive circuit.
It should be noted that, in different embodiments, the number of the electrodes on the first conductive line and the second conductive line is different, and the first conductive line where the first electrode 1 is located and the second conductive line where the second electrode 2 is located can be connected in series by connecting the first electrode 1 and the second electrode 2 on the two outermost electrode columns, so as to form a mixed conductive line including the first electrode 1 and the second electrode 2. When the touch control device is specifically arranged, different connection modes are adopted due to different numbers of touch control electrodes on the touch control substrate.
Example 1
As shown in fig. 3-4, in the embodiment of the present application, there is shown a case where the number of electrodes on the electrode rows and the electrode columns is the same, that is, the first electrode 1 and the second electrode 2 are arranged to form an m×m electrode matrix, and on each electrode row, the number of the first electrode 1 and the second electrode 2 is the same, and in fig. 2, there is shown an 8×8 electrode matrix, where (i, j) represents the coordinate positions of the electrodes, that is, (1, 1) is the first electrode 1, and (1, 2) is the second electrode 2.
In the embodiment of the application, 7 first conductive lines are formed according to the connection of the first electrode 1 and the first electrode 1 in the first diagonal direction. In the first conductive line, 8 first electrodes 1 on L1, 6 first electrodes 1 on L2, 4 first electrodes 1 on L3, 2 first electrodes 1 on L4, 6 first electrodes 1 on L5, 4 first electrodes 1 on L6, 2 first electrodes 1 on L7.
Likewise, 7 first conductive traces are formed in accordance with the connection of the second electrode 2 and the second electrode 2 in the second diagonal direction. In the first conductive line, 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 8 first electrodes 1 on T4, 6 first electrodes 1 on T5, 4 first electrodes 1 on T6, and 2 first electrodes 1 on T7.
In order to make the number of electrodes on each conductive line the same, and at the same time, make each conductive line form a transverse and longitudinal staggered conductive line, so that each electrode can be scanned, in the application, the first electrode 1 on the outermost electrode column is electrically connected with the adjacent second electrode 2, so that the first conductive line where the first electrode 1 is located is connected with the second conductive line where the second electrode 2 is located to form a mixed conductive line, and the number of electrodes on each mixed conductive line is equal to the number of electrodes on each electrode column.
For example, in the present application, the two conductive lines L7 and T3 are connected to (6, 1) on the first column (7, 1) to form a mixed conductive line, the two conductive lines L6 and T2 are connected to (4, 1) on the first column (5, 1) to form a mixed conductive line, and the two conductive lines L5 and T1 are connected to (2, 1) on the first column (3, 1) to form a mixed conductive line.
Likewise, the two conductive lines L2 and T7 form a mixed conductive line on the eighth column (7, 8) and (6, 8), the two conductive lines L3 and T6 form a mixed conductive line on the eighth column (5, 8) and (2, 8), and the two conductive lines L4 and T5 form a mixed conductive line on the eighth column (5, 8).
By the connection mode of the electrodes in the embodiment of the application, 8 independent conductive channels can be formed, each electrode is positioned on one independent conductive channel, and each conductive channel is intersected with other conductive channels. Therefore, as a mutual capacitance type touch mode, a scanning signal can be sent through one conductive channel, other conductive channels are used as sensing channels, and the touched electrode can be rapidly determined through a plurality of conductive channels which are arranged in a crossing mode.
Example two
As shown in fig. 5-6, a connection scheme in which the number of electrode rows is smaller than the number of electrode columns is also shown in the embodiment of the present application. In the embodiment of the application, the starting point position of the connecting wire is set at the lower frame position, so that the number of the conductive channels is equal to the number of the electrode columns, and the number of the electrodes on each conductive channel is equal to the number of the electrode rows.
As the number of columns or rows decreases, the number of first conductive traces and the number of second conductive traces formed correspondingly decrease. In the embodiment of the application, a 6×8 electrode matrix is shown, where (i, j) represents the coordinate position of the electrode, i.e., (1, 1) is the first electrode 1 and (1, 2) is the second electrode 2.
In the embodiment of the application, 5 first conductive lines are formed according to the connection of the first electrode 1 and the first electrode 1 in the first diagonal direction. In the first conductive line, 6 first electrodes 1 on L1, 6 first electrodes 1 on L2, 4 first electrodes 1 on L3, 2 first electrodes 1 on L4, 4 first electrodes 1 on L5, and 2 first electrodes 1 on L6.
Likewise, 7 first conductive traces are formed in accordance with the connection of the second electrode 2 and the second electrode 2 in the second diagonal direction. In the first conductive line, 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 6 first electrodes 1 on T4, 4 first electrodes 1 on T5, and 2 first electrodes 1 on T6.
In order to make the number of electrodes on each conductive line the same, and at the same time, make each conductive line form a transverse and longitudinal staggered conductive line, so that each electrode can be scanned, in the application, the first electrode 1 on the outermost electrode column is electrically connected with the adjacent second electrode 2, so that the first conductive line where the first electrode 1 is located is connected with the second conductive line where the second electrode 2 is located to form a mixed conductive line, and the number of electrodes on each mixed conductive line is equal to the number of electrodes on each electrode column.
Since the number of electrodes on the first conductive lines is the same as the number of electrode rows in the existing L1 and L2, it is not necessary to connect the electrodes on the first conductive lines with other electrodes on the outermost electrode columns. Similarly, the second electrodes 2 on T3 and T4 do not need to be connected to the electrodes on the outer ends.
For example, in the present application, the first column (5, 1) is connected to (4, 1) such that the two conductive lines of L6 and T2 form a mixed conductive line, and the first column (3, 1) is connected to (2, 1) such that the two conductive lines of L5 and T1 form a mixed conductive line.
Likewise, the (5, 8) is connected to the (4, 8) column such that the two conductive lines L3 and T6 form a mixed conductive line, and the (3, 8) is connected to the (2, 8) column such that the two conductive lines L4 and T5 form a mixed conductive line.
By the connection mode of the electrodes in the embodiment of the application, 8 independent conductive channels can be formed, each electrode is positioned on one independent conductive channel, and each conductive channel is intersected with other conductive channels. Therefore, as a mutual capacitance type touch mode, a scanning signal can be sent through one conductive channel, other conductive channels are used as sensing channels, and the touched electrode can be rapidly determined through a plurality of conductive channels which are arranged in a crossing mode.
Example III
As shown in fig. 7-8, a connection scheme in which the number of electrode rows is greater than the number of electrode columns is also shown in the embodiment of the present application. In the embodiment of the application, the starting point position of the connecting wire is set at the lower frame position, so that the number of the conductive channels is equal to the number of the electrode columns, and the number of the electrodes on each conductive channel is equal to the number of the electrode rows.
As the number of columns or rows decreases, the number of first conductive traces and the number of second conductive traces formed correspondingly decrease. In the embodiment of the application, an 8×7 electrode matrix is shown, where (i, j) represents the coordinate position of the electrode, i.e., (1, 1) is the first electrode 1 and (1, 2) is the second electrode 2.
In the embodiment of the application, 7 first conductive lines are formed according to the connection of the first electrode 1 and the first electrode 1 in the first diagonal direction. In the first conductive line, 7 first electrodes 1 on L1, 5 first electrodes 1 on L2, 3 first electrodes 1 on L3, 1 first electrodes 1 on L4, 6 first electrodes 1 on L5, 4 first electrodes 1 on L6, 2 first electrodes 1 on L7.
Likewise, 7 first conductive traces are formed in accordance with the connection of the second electrode 2 and the second electrode 2 in the second diagonal direction. In the first conductive line, 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 7 first electrodes 1 on T4, 5 first electrodes 1 on T5, and 3 first electrodes 1 on T6.
In order to make the number of electrodes on each conductive line the same, and at the same time, make each conductive line form a transverse and longitudinal staggered conductive line, so that each electrode can be scanned, in the application, the first electrode 1 on the outermost electrode column is electrically connected with the adjacent second electrode 2, so that the first conductive line where the first electrode 1 is located is connected with the second conductive line where the second electrode 2 is located to form a mixed conductive line, and the number of electrodes on each mixed conductive line is equal to the number of electrodes on each electrode column.
Since each of the first conductive lines is smaller than the number of electrode rows, the electrode on each first conductive line is connected to the other electrode on the outermost electrode row. In addition, in the present application, since the first diagonal direction and the second diagonal direction are fixed directions, there may be some electrodes in which there is no electrode in the diagonal direction, and thus, they may be individually used as one conductive line. As in (1, 7) and (8, 7) in the present embodiment.
For example, in the present application, the two conductive lines L7 and T3 are connected to (6, 1) on the first column (7, 1) to form a mixed conductive line, the two conductive lines L6 and T2 are connected to (4, 1) on the first column (5, 1) to form a mixed conductive line, and the two conductive lines L5 and T1 are connected to (2, 1) on the first column (3, 1) to form a mixed conductive line.
Likewise, the two conductive lines L1 and T7 form a mixed conductive line on the eighth line (8, 7) and (7, 7), the two conductive lines L2 and T6 form a mixed conductive line on the eighth line (6, 7) and (5, 7), the two conductive lines L3 and T5 form a mixed conductive line on the eighth line (4, 7) and (3, 7), and the two conductive lines L4 and T4 form a mixed conductive line on the eighth line (2, 7).
By the connection mode of the electrodes in the embodiment of the application, 7 independent conductive channels can be formed, each electrode is positioned on one independent conductive channel, and each conductive channel is intersected with other conductive channels. Therefore, as a mutual capacitance type touch mode, a scanning signal can be sent through one conductive channel, other conductive channels are used as sensing channels, and the touched electrode can be rapidly determined through a plurality of conductive channels which are arranged in a crossing mode.
In the embodiment of the present application, in order to simplify the manufacturing process, the first electrode 1 and the second electrode 2 are disposed on different layers, as shown in fig. 9 to 11. Specifically, the electrode includes a first electrode layer 11 and a second electrode layer 12 which are stacked, the first electrode 1 is provided on the first electrode layer 11, and the second electrode 2 is provided on the second electrode layer 12. The first electrode 1 is connected with the first electrode 1 through a first connecting wire 3, the first connecting wire 3 is positioned on the first electrode layer 11, the second electrode 2 is connected with the second electrode 2 through a second connecting wire 4, and the second connecting wire 4 is positioned on the second electrode layer 12. The first electrode 1 and the second electrode 2 are electrically connected through a first via hole 5.
It should be noted that, in the embodiment of the present application, by disposing the first electrode 1 and the second electrode 2 on different layers, it is convenient to dispose the first connection line 3 and the second connection line 4 to be insulated from each other.
However, the embodiment of the present application is not limited thereto, and in other embodiments, the first electrode 1 and the second electrode 2 may be disposed on the same layer, the first electrode 1 and the first electrode 1 are electrically connected through a second via hole, the second electrode 2 and the second electrode 2 are electrically connected through a third via hole, and the second via hole and the third via hole need to be disposed on different layers when disposed.
The application provides a touch display panel, which comprises a touch electrode structure and a driving device 10 for driving the touch electrode, wherein the driving device 10 is arranged on one side of an electrode row, the driving device 10 is connected with the electrode of the outermost electrode row through a plurality of signal lines 20, one signal line 20 corresponds to one electrode on the outermost electrode row, each signal line 20 is electrically connected with a conductive channel where the electrode is located through the electrode, and the conductive channel is a first conductive circuit where the electrode is located, a second conductive circuit where the electrode is located or a mixed conductive circuit where the electrode is located. The touch electrode structure is located in the display area, and the driving device 10 is located in the frame area.
The driving device 10 may be a touch chip, and is configured to provide a touch driving signal to the electrode through the conductive channel, receive a touch sensing signal from the sensing channel, and process the sensing signal to implement a touch sensing function.
It should be noted that, in the embodiment of the present application, the lower frame in which the driving device 10 is disposed in the frame area is described as an example, but the embodiment of the present application is not limited thereto, and the driving device 10 may be disposed in an upper frame, a left frame, or a right frame in the frame area.
Based on the driving device 10 disposed on the lower frame, therefore, the plurality of signal lines 20 connected with the driving device 10 may be disposed on the same side as the driving device 10, which facilitates the connection of the driving device 10, and at the same time, the frame area may be reduced without running lines from the left and right frames, thereby realizing a narrow frame.
With continued reference to fig. 2, the present application provides a driving method of a touch display panel, for driving the touch display panel as described above, including n conductive channels, the method includes:
Scanning the first n-1 conductive channels in sequence according to a preset sequence in a touch stage;
When scanning is performed to the ith conductive path corresponding to the ith signal line by the driving device 10, the sensing signals on the sensing paths are simultaneously received, wherein the sensing paths are the (i+1) th to the (n) th conductive paths, and i= (1, 2,., n-1).
That is, the above two electrodes are a transmitting electrode (Tx) for transmitting a touch signal and a sensing electrode (Rx) for generating a sensing signal according to the touch signal, respectively. The touch control signals are transmitted through the transmitting electrodes in turn, and the sensing signals generated in the sensing electrodes when the transmitting electrodes transmit are detected, so that the position of touch can be determined. Even if a plurality of touch points exist on the screen, the real coordinates of each touch point can be calculated.
It should be noted that, in the embodiment of the present application, the remaining conductive channels, i.e., the 2 nd, 3,4 th, are disposed to intersect the 1 st conductive channel, and the n conductive channels, and the 2 nd conductive channel are the remaining conductive channels, i.e., the 3 rd, 4 th, n conductive channels. When the n-1 conductive channel is corresponding, only the n-th conductive channel receives the induction signal. The n-th electrode is not required to be scanned, so that all electrodes finish scanning or sensing when the n-1 th electrode is performed, and the touch position can be accurately identified.
It should also be noted that, based on the principle of mutual capacitance, when a finger touches the capacitive screen, the coupling between the two electrodes near the touch point is affected, thereby changing the capacitance between the two electrodes. When the mutual capacitance is detected, the transverse electrodes sequentially send out excitation signals, and all the longitudinal electrodes simultaneously receive signals, so that the capacitance value of all the intersection points of the transverse electrodes and the longitudinal electrodes, namely the capacitance value of the two-dimensional plane of the whole touch screen, can be obtained.
Therefore, in the embodiment of the application, since the conductive channel in the previous sequence in the scanning sequence has already been scanned for whether the electrode on the conductive channel is touched, the signal on the channel in the previous scanning sequence does not need to be received when the subsequent channel is scanned. Therefore, in the embodiment of the application, scanning of one time sequence can be completed by scanning one by one except for the last (nth) conductive channel. Compared with the scanning mode in the prior art, the touch scanning time can be reduced.
The application provides a touch display device, which comprises the touch display panel.
It should be noted that, the touch panel in the embodiment of the present invention may be an organic light-Emitting Diode (OLED) display panel or a Micro light-Emitting Diode (Micro LED) display panel. The display device may be any electronic apparatus having a touch display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, or a television.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.