CN106201140B - touch device and sensing method thereof - Google Patents

Abstract

The present invention discloses a touch device and a sensing method thereof, which have a mutual capacitance mode and a self-capacitance mode. In the mutual capacitance mode, a data signal is outputted by the i-th first data line. A scan signal is sequentially outputted by at least one of the M scan lines. When the k-th scan line outputs a scan signal, the first sensing data on the second data line is received. The first sensing data is the result of mutual capacitance measurement between the sensing unit coupled to the j+1-th second data line and the sensing unit coupled to the i-th first data line. The data signal is switched to be outputted by the i+1-th first data line. When the k-th scan line outputs a scan signal, the second sensing data on the second data line is received. The second sensing data is the result of mutual capacitance measurement between the sensing unit coupled to the j+1-th second data line and the sensing unit coupled to the i+1-th first data line.

Description

Touch device and sensing method thereof

technical field

The present invention relates to a touch device and a sensing method thereof, in particular to a touch device and a sensing method for switching between a mutual capacitance mode and a self-capacitance mode.

Background technique

With the development of science and technology, along with the preservation of mobile payment and private data, the security of product data (Security), it is necessary to limit the control of the device and the data security through an appropriate user authentication mechanism (Authentication). Access to ensure the security of long-term stored data, and it is easier to integrate into mobile devices with capacitive fingerprint recognition, and at the same time, it can perform biometric identification to provide higher security.

As electronic devices become thinner and lighter, if mutual capacitive touch sensing is used, the driving metal layer for transmitting touch sensing signals and the sensing metal layer for sensing touch signals begin to be designed on the same metal in the layer. Although the purpose of reducing the volume and cost is achieved, the reduction in the area of the driving metal layer and the sensing metal layer results in a decrease in the radiation energy of the driving metal layer and the inductive amount of the sensing metal layer, which in turn reduces the ability of touch sensing. . When such a touch sensing technology is used in, for example, a fingerprint reader, it may cause problems such as insufficient sensing capability of fingerprint features and failure of identification.

SUMMARY OF THE INVENTION

The present invention provides a touch device and a sensing method thereof, so as to solve the problem in the prior art that the inductive capability of the driving metal layer decreases due to the decrease in the radiant energy of the driving metal layer and the decrease in the inductive amount of the sensing metal layer.

The sensing method of the touch device disclosed in the present invention is suitable for the sensing electrode layer. The sensing electrode layer has a plurality of sensing units, M scanning lines and N data lines. The sensing units are arranged in a sensing array of M columns and N rows, wherein the sensing units in each column are electrically connected to one of the M scan lines, and the sensing units in each row are electrically connected to one of the N data lines. The data lines are defined as a plurality of first data lines and a plurality of second data lines, the i-th first data line in the first data line is located in the j-th and j+1-th second data lines in the second data line between the lines, and the j+1 th second data line is located between the i th and the i+1 th first data line, the sensing method includes a mutual capacitance mode and a self-capacitance mode, wherein in the mutual capacitance mode, there are A data signal is output from the i-th first data line. A scan signal is output from at least one of the M scan lines in sequence. When the k-th scan line among the M scan lines outputs a scan signal, the first sensing data on each second data line is received, wherein the first sensing data on the j+1-th second data line is the k-th column Among the sensing units of , the result of mutual capacitance measurement between the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the ith first data line, and each of the kth column The sensing unit is electrically connected to the kth scan line. Switch the i+1 th first data line to output the data signal. When the k-th scan line among the M scan lines outputs a scan signal, the second sensing data on each second data line is received, wherein the second sensing data on the j+1-th second data line is the k-th column In the sensing unit of , the result of mutual capacity measurement between the sensing unit electrically connected to the j+1 th second data line and the sensing unit electrically connected to the i+1 th first data line.

The touch device disclosed in the present invention includes a sensing electrode layer. The sensing electrode layer has a plurality of sensing units, M scan lines, N data lines and a control unit. A plurality of sensing units are arranged in a sensing array with M columns and N rows. The sensing units in each column of the sensing array are electrically connected to one of the M scan lines. The sensing units in each row of the sensing array are electrically connected to one of the N data lines. The data lines are defined as a plurality of first data lines and a plurality of second data lines. The i-th first data line in the first data lines is located between the j-th and j+1-th second data lines in the second data lines, and the j+1-th second data line is located in the i-th line and the i+1th first data line. The control unit operates in a mutual capacitance mode and a self-capacitance mode. In the mutual capacitance mode, the control unit outputs a data signal from the i-th first data line, and sequentially outputs a scan signal from at least one of the M scan lines. When the k-th scan line among the M scan lines outputs the scan signal, the control unit receives the first sensing data on each of the second data lines. The control unit switches to output the data signal from the i+1 th first data line, and sequentially outputs the scan signal from at least one of the M scan lines. When the k th scan line among the M scan lines outputs the scan signal, the control unit receives the second sensing data on each second data line, wherein the first sensing data on the j+1 th second data line is the first sensing data on the j+1 th second data line Among the sensing units in column k, the result of mutual capacitance measurement between the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the ith first data line, the j+1th The second sensing data on the two data lines is the sensing unit in the k-th column, the sensing unit electrically connected to the j+1-th second data line and the sensing unit electrically connected to the i+1-th first data line The result of the unit mutual capacity test.

According to the touch device and the sensing method thereof disclosed in the present invention, the touch device can switch between the self-capacitance mode and the mutual-capacitance mode, so that the touch device can increase the sensing area and the amount of data to be sensed, so as to solve the problem of the existing In technology, the problem of decreased sensing ability. Furthermore, when the mutual capacitance mode is executed, the touch device will transmit data signals from part of the first data lines and transmit data signals from another part of the first data lines in time division, so that the control unit receives the data signal. The sensing data will not be misjudged, and the gap area between the sensing units can also be sensed, so that the sensing capability and resolution of the touch device are further improved.

The above description of the present disclosure and the following description of the embodiments serve to demonstrate and explain the spirit and principles of the present invention, and provide further explanation of the scope of the claims of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to an embodiment of the present invention.

2 is a voltage timing diagram of an operation stage of the touch device operating in a mutual capacitance mode according to an embodiment of the present invention.

3 is a voltage timing diagram of another operation stage of the touch device operating in the mutual capacitance mode according to an embodiment of the present invention.

4 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention.

5 is a voltage timing diagram of an operation stage of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention.

6 is a voltage timing diagram of an operation stage of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention.

7 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to another embodiment of the present invention.

8 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to still another embodiment of the present invention.

FIG. 9 is a voltage timing diagram of an operation stage of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

10 is a voltage timing diagram of another operation stage of the touch device operating in the mutual capacitance mode according to still another embodiment of the present invention.

11 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention.

12 is a voltage timing diagram of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

13 is a voltage timing diagram of another operation stage of the touch device operating in the mutual capacitance mode according to yet another embodiment of the present invention.

14 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention.

15 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to yet another embodiment of the present invention.

FIG. 16 is a flow chart of steps of a sensing method of a touch device according to an embodiment of the present invention.

Among them, reference numerals:

10, 20, 10’, 20’ Touch Device

11, 21, 11', 21' Sensing electrode layer

111, 211, 111', 211' induction unit

112, 212, 112', 212' scan lines

113, 213, 113', 213' data cable

114, 214, 114’, 214’ control unit

115, 215, 115', 215' induction array

G(1)～G(m), G(k-1), G(k), G(k+1), G(k+2) Scanning signal

T(i), T(i+1), T(i+2), T(i+3), R(j), R(j+1), R(j+2) data signal

D(1)~D(n), T(1)~T(4), R(1)~R(4) Data signal

[i], [i+1] First data line

[j], [j+1], [j+2] Second data line

Z1～Z4, Y1～Y6, Y1’～Y6’, W1, W2 Sensing area

Prd1～Prd6, Prd1’～Prd4’ time interval

Detailed ways

The detailed features and advantages of the present invention are described in detail below in the embodiments, and the content is sufficient to enable any person skilled in the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of the patent application and the drawings , any person skilled in the related art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the concept of the present invention in further detail, but are not intended to limit the scope of the present invention in any way.

Please refer to FIG. 1 , which is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to an embodiment of the present invention. As shown in FIG. 1 , the touch device 10 includes a sensing electrode layer 11 . The sensing electrode layer 11 has a plurality of sensing units 111 , M scan lines 112 , N data lines 113 and a control unit 114 . The plurality of sensing units 111 are arranged in a sensing array 115 with M columns and N rows. The sensing unit 111 in each column of the sensing array 115 is electrically connected to one of the M scan lines 112 . The sensing units 111 in each row of the sensing array 115 are electrically connected to one of the N data lines 113 .

In one embodiment, the control unit 114 has a driving circuit and a data circuit. The M scan lines 112 are electrically connected to the driving circuit, and the N data lines 113 are electrically connected to the data circuit. The M scan lines 112 respectively transmit the scan signals G( 1 ) to G(m) provided by the driving circuit to the M columns of the sensing units 111 of the sensing array 115 , and the N data lines 113 respectively transmit the data signals provided by the data circuit to the sensing units 111 . N rows of sensing cells 111 of the array 115 . In one embodiment, the sensing unit 111 has, for example, an active element and a conductor, and the active element is, for example, an N-type transistor. When the k-th scan line 112 outputs the scan signal G(k), that is, when the voltage level on the k-th scan line 112 increases, the active element in the sensing unit 111 on the k-th column is driven, and the active element in the k-th column is driven. The active element in the inductive unit 111 is turned on, and the data signals on the N data lines 113 are written into the conductors on the k-th column respectively. For example, the sensing unit 111 in the k-th column and the i-th row The data signal T(i) on line 113 is written into the conductor.

When a finger touches the sensing array 115 of the touch device 10, the touch device 10 performs self-capacitance sensing and mutual-capacitance sensing on the finger, that is, the control unit 114 switches to operate in the mutual-capacitance mode and Self-capacitive mode for finger sensing. The sensing method of the touch device 10 operating in the mutual capacitance mode will be described below. Please refer to FIGS. 1 to 3 together. FIG. 2 illustrates the touch device operating in the mutual capacitance mode according to an embodiment of the present invention. FIG. 3 is a voltage timing diagram of another operation stage of the touch device operating in the mutual capacitance mode according to an embodiment of the present invention. As shown in the figure, part of the data lines 113 of the N data lines 113 is defined as the first data line, and another part of the data lines 113 is defined as the second data line, and the first data line and the second data line are respectively used as It is used as a transmit data line (TX) and a receive data line (RX). This embodiment does not limit the first data line to be used as the transmission data line or the second data line to be used as the transmission data line.

For the convenience of description, the first data line and the second data line are represented by [i] and [j] respectively in the drawings, that is, [i] represents the ith first data line, and [i+1] represents the ith first data line. i+1 first data line, [j] represents the j-th second data line, [j] represents the j+1-th second data line, and the i-th first data line is located in the j-th second data line line and the j+1 th second data line, and the j+1 th second data line is located between the i th first data line and the i+1 th first data line.

In the mutual capacitance mode, the control unit 114 outputs the data signal T(i) from the i-th first data line, as shown in FIG. 2 . Next, the control unit 114 sequentially outputs the scan signals G( 1 ) to G(m) from the M scan lines 112 . Taking the k-th scan line 112 of the M scan lines 112 as an example, when the k-th scan line 112 outputs the scan signal G(k), the control unit 114 receives the first sense on each of the second data lines. data, such as the first sensing data on the j-th second data line, the j+1-th second data line, and the j+2-th second data line, when the k-th scan line 112 outputs the scan signal G ( k), the first sensing data on the j-th second data line is the sensing unit 111 on the k-th column, the sensing unit electrically connected to the j-th second data line and the sensing unit electrically connected to the i-th row The result of the mutual capacity measurement of the sensing units of the first data line, that is, the result of the mutual capacity measurement of the sensing area Z1 in FIG. 1 . The first sensing data on the j+1 th second data line is the sensing unit 111 on the k th column, the sensing unit electrically connected to the j+1 th second data line is electrically connected to the i th row The result of the mutual capacity measurement of the sensing units of the first data line, that is, the result of the mutual capacity measurement of the sensing area Z2 in FIG. 1 .

Next, the control unit 114 outputs the data signal T(i+1) from the i+1 th first data line, as shown in FIG. 3 . The control unit 114 sequentially outputs the scan signals G( 1 ) to G(m) from the M scan lines 112 . Similarly, taking the k-th scan line 112 among the M scan lines 112 as an example, when the k-th scan line 112 outputs the scan signal G(k), the control unit 114 receives the signal on each of the second data lines. The first sensing data, wherein when the k-th scan line 112 outputs the scan signal G(k), the first sensing data on the j+1-th second data line is the electrical property of the sensing unit 111 on the k-th column. The result of the mutual capacity measurement between the sensing unit connected to the j+1 th second data line and the sensing unit electrically connected to the i th first data line, that is, the result of the mutual capacity measurement of the sensing area Z3 in FIG. 1 . The first sensing data on the j+2 th second data line is the sensing unit 111 on the k th column, the sensing unit electrically connected to the j+2 th second data line is electrically connected to the i th row The result of the mutual capacity measurement of the sensing units of the first data line, that is, the result of the mutual capacity measurement of the sensing area Z4 in FIG. 1 . The sensing regions Z1 to Z4 in FIG. 1 are only for the convenience of description and drawing, and do not refer to the actual sensing regions of the touch device 10 .

Specifically, please refer to FIGS. 4 to 6 . FIG. 4 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 5 is a schematic diagram of another embodiment of the present invention. The illustrated voltage timing diagram of the touch device operating in the mutual capacitance mode in one operation stage, FIG. 6 is the voltage in one operation stage of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention. The timing diagram, as shown in the figure, when the sensing electrode layer 11 of the touch device 10 has 8 scan lines 112, 5 data lines 113, and a sensing array 115 with a plurality of sensing units 111 arranged in 8 columns and 5 rows, the control The unit 114 first outputs the data signal T( 1 ) from the second data line 113 , and then the control unit 114 sequentially outputs the scan signals G( 1 ) to G( 8 ) from the eight scan lines 112 .

In the time interval Prd1 ′ in FIG. 5 , when the first scan line 112 outputs the scan signal G( 1 ), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives the first piece of data. The first sense data on line 113 , the third data line 113 and the fifth data line 113 . At this time, the first sensing data on the first data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the first row and the first column and the sensing unit 111 in the second row and the first column. The first sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the first column and the sensing unit 111 in the second row and the first column. The first sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fourth row and the first column and the sensing unit 111 in the fifth row and the first column.

In the time interval Prd2', when the second scan line 112 outputs the scan signal G(2), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the first data line 113, the second The first sensing data on the three data lines 113 and the fifth data line 113 . At this time, the first sensing data on the first data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the first row and the second column and the sensing unit 111 in the second row and the second column. The first sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the second column and the sensing unit 111 in the second row and the second column. The first sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fourth row and the second column and the sensing unit 111 in the fifth row and the second column.

When the third to eighth scan lines 112 to 112 output the scan signals G( 3 ) to G( 8 ), similarly, the control unit 114 receives the first data line 113 , the third data line 113 and the The result of the mutual capacity measurement of the sensing unit 111 on the fifth data line 113 will not be repeated here.

Next, the control unit 114 outputs the data signal T( 2 ) from the fourth data line 113 , and the control unit 114 sequentially outputs the scan signals G( 1 ) to G( 8 ) from the eight scan lines 112 . In the time interval Prd3 ′ in FIG. 6 , when the first scan line 112 outputs the scan signal G( 1 ), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives the third piece of data. Line 113 and second sense data on the fifth data line 113. The second sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the first column and the sensing unit 111 in the fourth row and the first column. The second sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fifth row and the first column and the sensing unit 111 in the fourth row and the first column.

In the fourth time interval Prd4 ′, when the second scan line 112 outputs the scan signal G( 2 ), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the third data line 113 and the second sense data on the fifth data line 113. The second sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the second column and the sensing unit 111 in the fourth row and the second column. The second sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fifth row and the second column and the sensing unit 111 in the fourth row and the second column.

When the third to eighth scan lines 112 to 112 output the scan signals G( 3 ) to G( 8 ), similarly, the control unit 114 receives the first data line 113 , the third data line 113 and the The result of the mutual capacity measurement of the sensing unit 111 on the fifth data line 113 will not be repeated here.

In practice, the result of the mutual capacitance measurement refers to the result that when the finger touches the sensing unit 11 , the control unit 114 measures the result of the change in the mutual capacitance between the two sensing units 111 caused by the finger. Specifically, taking two sensing units 111 as an example, one sensing unit 111 is provided with a data signal, and the other sensing unit 111 senses the radiation energy generated by the sensing unit 111 provided with the data signal. When the finger does not touch the sensing unit 111 , there is a mutual capacitance between the two sensing units 111 . When a finger touches the sensing unit 111 , capacitances are generated between the finger and the two sensing units 111 respectively. The capacitance on the finger and the capacitance between the finger and the two sensing units 111 will change the mutual capacitance between the two sensing units 111 . The control unit 114 can determine the touch of the finger according to the changed mutual capacitance between the two sensing units 111 or the change amount of the mutual capacitance between the two sensing units 111 .

Next, the sensing method of the touch device 10 operating in the self-capacitance mode will be described. Please refer to FIG. 1 again. As shown in FIG. 1 , in the self-capacitance mode, the control unit 114 outputs the data signal D from the N data lines 113 . (1) to D(n), and the scanning signals G(1) to G(m) are sequentially output from the M scanning lines 112 . Taking the k-th scan line 112 of the M scan lines 112 as an example, when the k-th scan line 112 outputs the scan signal G(k), the control unit 114 receives the third sensing data of each data line 113 . That is to say, in the self-capacitance mode, each of the first data lines and each of the second data lines outputs a data signal, so that the control unit 114 receives each of the first data lines and each of the second data lines of the third sensing data. In practice, since each data line 113 outputs a data signal in the self-capacitance mode, the data line 113 is not actually defined as the first data line and the second data line. The two data lines are only used for the description of the mutual capacitance mode, and are not intended to limit this embodiment.

When the k-th scan line 112 outputs the scan signal G(k), the third sensing data on the i-th first data line is the sensing unit 111 on the k-th column, which is electrically connected to the i-th first data line The result of the self-capacitance measurement of the sensing unit 111 of the line, that is, the result of the self-capacitance measurement of the sensing unit 111 of the i-th row and the k-th column. The third sensing data on the j-th second data line is the self-capacitance measurement result of the sensing unit 111 electrically connected to the j-th second data line in the sensing unit 111 on the k-th column, that is, the j-th row The result of the self-capacitance measurement of the sensing unit 111 in the k-th column.

Taking the actual example of FIG. 4 as well, please refer to FIG. 4 and FIG. 7 together. FIG. 7 is a voltage timing diagram of the touch device operating in the self-capacitance mode according to another embodiment of the present invention, as shown in FIG. As shown, when the sensing electrode layer 11 of the touch device 10 has 8 scanning lines 112, 5 data lines 113, and a sensing array 115 with a plurality of sensing units 111 arranged in 8 columns and 5 rows, the control unit 114 starts from each One data line 113 outputs data signals D( 1 ) to D( 5 ) respectively, and then the control unit 114 sequentially outputs scan signals G( 1 ) to G( 8 ) from the eight scan lines 112 .

In the time interval Prd5 in FIG. 7 , when the first scan line 112 outputs the scan signal G( 1 ), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives five data lines 113 on the third sensing data. The third sensing data on the first data line 113 is the self-capacitance measurement result of the sensing unit 111 in the first row and the first column. The third sensing data on the second data line 113 is the self-capacitance measurement result of the sensing unit 111 in the second row and the first column. The third sensing data on the third data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the third row and the first column, and the third sensing data on the remaining fourth data lines 113 to the fifth data lines 113 are And so on.

In the time interval Prd6, when the second scan line 112 outputs the scan signal G(2), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the third signal on the five data lines 113. sensor data. The third sensing data on the first data line 113 is the self-capacitance measurement result of the sensing unit 111 in the first row and the second column. The third sensing data on the second data line 113 is the self-capacitance measurement result of the sensing unit 111 in the second row and the second column. The third sensing data on the third data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the third row and the second column, and the third sensing data on the remaining fourth data lines 113 to the fifth data lines 113 are And so on.

When the third scan line 112 to the eighth scan line 112 output the scan signals G( 3 ) to G( 8 ), similarly, the control unit 114 receives the self-capacitance measurement result of each data line 113 and does not add any further Repeat.

In practice, the result of the self-capacitance measurement refers to the result that when the finger touches the sensing unit 11 , the control unit 114 measures the result of the change of the self-capacitance capacitance between the sensing unit 111 and the ground terminal caused by the finger. Specifically, when the finger does not touch the sensing unit 111 , there is a self-capacitance capacitance between the sensing unit 111 and the ground terminal. When a finger touches the sensing unit 111 , capacitances are generated between the finger and the sensing unit 111 respectively. The capacitance on the finger and the capacitance between the finger and the sensing unit 111 will change the self-capacitance capacitance between the sensing unit 111 and the ground. The control unit 114 can determine the touch of the finger according to the changed self-capacitance capacitance or the change amount of the self-capacitance capacitance between the sensing unit 111 and the ground terminal.

Furthermore, when the touch device 10 is used for fingerprint recognition, the concave and convex pattern of the fingerprint makes the contact area between the finger and the sensing unit 111 different, thereby affecting the mutual capacitance between the two sensing units 111 in the mutual capacitance mode. The size of the capacitance, and the size of the self-capacitance capacitance between the sensing unit 111 and the ground terminal in the self-capacitance mode. In other words, when a finger touches the touch device 10 to allow the touch device 10 to recognize the fingerprint of the finger, the touch device 10 performs sensing in the mutual capacitance mode and the self capacitance mode, respectively. In the self-capacitance mode, the touch device 10 recognizes the self-capacitance measurement result of the finger region corresponding to each sensing unit 111 . In the mutual capacitance mode, the touch device 10 recognizes the mutual capacitance measurement result of the finger region corresponding to the two sensing units 111 . The touch device 10 achieves the effect of recognizing the fingerprint according to the self-capacitance measurement result and the mutual-capacity measurement result.

In this embodiment, when the sensing array 115 of the touch device 10 is a matrix with M columns and N rows, the touch device 10 obtains the mutual capacitance sensing data of (2M−1)×N pens and the self capacitance of M×N pens. The response data is used to improve the resolution of the sensing of the touch device 10 .

Please refer to FIGS. 8 to 10 together. FIG. 8 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 9 is a schematic diagram of another embodiment of the present invention. The voltage timing diagram of the touch device operating in the mutual capacitance mode is shown in FIG. 10 , and FIG. 10 is a voltage timing diagram of another operation stage of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention. As shown in the figure, the touch device 20 includes a sensing electrode layer 21 . The sensing electrode layer 21 has a plurality of sensing units 211 , M scan lines 212 , N data lines 213 and a control unit 214 . The plurality of sensing units 211 are arranged in a sensing array 215 with M columns and N rows. The sensing unit 211 in each column of the sensing array 215 is electrically connected to one of the M scan lines 212 . The sensing units 211 in each row of the sensing array 215 are electrically connected to one of the N data lines 213 .

The touch device 20 of this embodiment is substantially the same as the previous embodiment, and the difference from the previous embodiment is that the control unit 214 sequentially outputs the scan signals G( 1 ) to G(m) from the M scan lines 212 , and the control unit 214 makes the time when two adjacent scan lines of the M scan lines 212 output scan signals overlap. In other words, when the control unit 214 outputs the scan signal G(k) from the k-th scan line 212 for half the expected time, the control unit 214 outputs the scan signal G(k+1) from the k+1-th scan line 212 . When the control unit 214 outputs the scan signal G(k+1) from the k+1 th scan line 212 for half the expected time, the control unit 214 stops outputting the scan signal G(k) from the k th scan line 212, and the control unit 214 stops outputting the scan signal G(k) from the k+1 scan line 212. 214 outputs the scan signal G(k+2) from the k+2 th scan line 212 .

Specifically, in the mutual capacitance mode, when the control unit 214 outputs the data signal T(i) from the i-th first data line, the control unit 214 sequentially outputs the scan signals G(1)˜G(1)˜G from the M scan lines 212 . G(m), and receive the first sensing data on each second data line, such as the jth second data line, the j+1th second data line, and the j+2th second data line The first sensing data, wherein when the k-1 th scan line 212 outputs the scan signal G(k-1), and the k-th scan line 212 outputs the scan signal G(k), the jth second data line The first sensing data is the sensing unit 211 on the k-1th column and the kth column, the sensing unit electrically connected to the j-th second data line and the sensing unit electrically connected to the i-th first data line The result of the mutual capacity measurement, that is, the mutual capacity measurement result of the sensing area Y1 in FIG. 8 . The first sensing data on the j+1th second data line is the sensing unit 211 on the k-1th column and the kth column, the sensing unit electrically connected to the jth second data line is electrically connected to The result of the mutual capacity measurement of the sensing units in the i-th first data line, that is, the mutual capacity measurement result of the sensing area Y1 ′ in FIG. 8 .

At this time, similarly, the control unit 214 also outputs the data signal T(i+2) from the i+2 th first data line, and the first sensing data on the j+2 th second data line is the k th In the sensing units 211 in the -1 column and the k-th column, the sensing unit electrically connected to the j+2 th second data line and the sensing unit electrically connected to the i+2 th first data line measure the mutual capacitance the result of.

More specifically, the first sensing data on the j-th second data line is electrically connected to the sensing unit 211 of the j-th second data line, and the sensing units 211 and 211 in the k-1 th column and the k-th column are The sensing unit electrically connected to the i-th first data line is located in the k-1 th column and the k-th column sensing unit 211 is the result of mutual capacitance measurement. The first sensing data on the j+1 th second data line is electrically connected to the sensing unit 211 of the j+1 th second data line, and the sensing units 211 located in the k-1 th column and the k th column are connected to the electrical sensing unit 211. It is the result of mutual capacitance measurement between the sensing unit 211 in the k-1 th column and the k-th column in the sensing unit connected to the ith first data line.

Next, when the k-th scan line 212 outputs the scan signal G(k), and the k+1-th scan line 212 outputs the scan signal G(k+1), the first sensor on the j-th second data line The data is that among the sensing units 211 on the k-th column and the k+1-th column, the sensing unit electrically connected to the j-th second data line and the sensing unit electrically connected to the i-th first data line measure the mutual capacitance. , that is, the mutual capacity measurement result of the sensing area Y3 in FIG. 8 . The first sensing data on the j+1th second data line is the sensing unit 211 on the kth column and the k+1th column, which is electrically connected to the sensing unit of the j+1th second data line and the electrical The result of the mutual capacity measurement of the sensing units sexually connected to the i-th first data line, that is, the mutual capacity measurement result of the sensing area Y3' in FIG. 8 . Similarly, when the k+1 th scan line 212 outputs the scan signal G(k+1), and the k+2 th scan line 212 outputs the scan signal G(k+2), the control unit 214 receives the The mutual capacity measurement results of the sensing area Y5 and the sensing area Y5' are not repeated here.

In the next operation stage, the control unit 214 outputs the data signal T(i+1) from the i+1 th first data line. The control unit 214 sequentially outputs the scan signals G( 1 ) to G(m) from the M scan lines 212 , and receives the second sensing data on each of the second data lines, such as the j-th second data line, the second data line The second sensing data on the j+1 second data line and the j+2 th second data line, when the k-1 th scan line 212 outputs the scan signal G(k-1), and the k-th scan line 212 outputs the scan signal G(k-1) When the line 212 outputs the scan signal G(k), the second sensing data on the j+1th second data line is the sensing unit 211 on the k-1th column and the kth column, which is electrically connected to the j+th The result of mutual capacitance measurement between the sensing unit of one second data line and the sensing unit electrically connected to the i+1 th first data line, that is, the mutual capacitance measurement result of the sensing area Y2 in FIG. 8 . The second sensing data on the j+2 th second data line is the sensing unit 211 on the k-1 th column and the k th column, which is electrically connected to the sensing unit of the j+2 th second data line and the electrical The result of the mutual capacity measurement of the sensing units sexually connected to the i+1 th first data line, that is, the mutual capacity measurement result of the sensing area Y2' in FIG. 8 .

At this time, similarly, the control unit 214 also outputs the data signal T(i+3) from the i+3 th first data line, and the second sensing data on the j+3 th second data line is the k th In the sensing units 211 on the -1 column and the k-th column, the sensing unit electrically connected to the j+3 th second data line and the sensing unit electrically connected to the i+3 th first data line measure the mutual capacitance the result of.

Next, when the k-th scan line 212 outputs the scan signal G(k), and the k+1-th scan line 212 outputs the scan signal G(k+1), the j+1-th second data line The second sensing data is that among the sensing units 211 on the kth column and the k+1th column, the sensing unit electrically connected to the j+1th second data line is electrically connected to the i+1th first data line The result of the mutual capacity measurement of the sensing units of , that is, the mutual capacity measurement result of the sensing area Y4 in FIG. 8 . The second sensing data on the j+2 th second data line is the sensing unit 211 on the k th column and the k+1 th column, which is electrically connected to the sensing unit of the j+2 th second data line and the electrical The result of the mutual capacity measurement of the sensing units sexually connected to the i+1 th first data line, that is, the mutual capacity measurement result of the sensing area Y4' in FIG. 8 . Similarly, when the k+1 th scan line 212 outputs the scan signal G(k+1), and the k+2 th scan line 212 outputs the scan signal G(k+2), the control unit 214 receives the The mutual capacity measurement results of the sensing area Y6 and the sensing area Y6' are not repeated here. The sensing regions Y1-Y6 and Y1'-Y6' in FIG. 8 are only for convenience of description and the drawings are not shown to refer to the actual sensing regions of the touch device 20.

For a practical example, please refer to FIGS. 11 to 13 , FIG. 11 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 12 is another embodiment of the present invention. The voltage timing diagram of the touch device operating in the mutual capacitance mode according to the embodiment shown in FIG. 13 is the voltage timing diagram of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention in another operation stage. picture. When the sensing electrode layer 21 of the touch device 20 has 3 scan lines 212 , 8 data lines 213 , and a sensing array 215 with a plurality of sensing units 211 arranged in 3 columns and 8 rows, the control unit 214 first selects the data from the second data line 215 . The line 213 outputs the data signal T(1) and the sixth data line 213 outputs the data signal T(3), and then the control unit 214 sequentially outputs the scan signals G(1)˜G(3) from the three scan lines 212 .

In the time interval Prd1 ′ in FIG. 12 , when the first scan line 212 outputs the scan signal G(1), and the second scan line 212 outputs the scan signal G(2), that is, the first scan line 212 When the voltage level of the second scan line 212 rises, the control unit 214 receives the first sensing data on the first, third, fifth and seventh data lines 213 . At this time, the first sensing data on the first data line 213 is the mutual capacitance between the sensing units 211 in the first row and the first column and the second row and the first column, which is the same as the mutual capacitance between the first row and the second column and the second The sum of the mutual capacitances between the sensing units 211 in row 2 and column 2. The first sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the 3rd row, 1st column and 2nd row, 1st column, which is the same as the 3rd row, 2nd column and 2nd row, 2nd The sum of the mutual capacitance between the sensing cells 211 of the column. The first sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, the 1st column and the 6th row and the 1st column, which is the same as that of the 5th row and the 2nd column and the 6th row and the 2nd. The sum of the mutual capacitance between the sensing cells 211 of the column. The first sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row and the 1st column and the 6th row and the 1st column. The sum of the mutual capacitance between the sensing cells 211 of the column.

In the time interval Prd2', when the second scan line 212 outputs the scan signal G(2) and the third scan line 212 outputs the scan signal G(3), that is, the second scan line 212 and the third scan line 212 When the voltage level of the scan line 212 rises, the control unit 214 receives the first sensing data on the first, third, fifth and seventh data lines 213 . At this time, the first sensing data on the first data line 213 is the mutual capacitance between the sensing units 211 in the first row and the second column and the second row and the second column, which is the same as the mutual capacitance between the first row, the third column and the second row. The sum of the mutual capacitances between the sensing units 211 in row 3 and column 3. The first sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the 3rd row, 2nd column and 2nd row, 2nd column, which is the same as the 3rd row, 3rd column and 2nd row, 3rd column. The sum of the mutual capacitance between the sensing cells 211 of the column. The first sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 2nd column and 6th row, 2nd column, which is the same as the 5th row, 3rd column and 6th row, 3rd column. The sum of the mutual capacitance between the sensing cells 211 of the column. The first sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row, 2nd column and 6th row, 2nd column, which is the same as the 7th row, 3rd column and 6th row, 3rd column. The sum of the mutual capacitance between the sensing cells 211 of the column.

Next, the control unit 214 outputs the data signal T( 2 ) from the fourth data line 213 and the data signal T( 4 ) from the eighth data line 213 , and the control unit 214 sequentially outputs scan lines from the three scan lines 212 Signals G(1) to G(3). In the time interval Prd3 ′ in FIG. 13 , when the first scan line 212 outputs the scan signal G(1) and the second scan line 212 outputs the scan signal G(2), that is, the first scan line 212 When the voltage level of the second scan line 212 rises, the control unit 214 receives the second sensing data on the first, third, fifth and seventh data lines 213 . At this time, the second sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the 3rd row, the 1st column and the 4th row and the 1st column. The sum of the mutual capacitances between the sensing units 211 in row 2 and column 2. The second sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, the 1st column and the 4th row and the 1st column, and the The sum of the mutual capacitance between the sensing cells 211 of the column. The second sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row and the 1st column and the 8th row and the 1st column. The sum of the mutual capacitance between the sensing cells 211 of the column.

In the time interval Prd4', when the second scan line 212 outputs the scan signal G(2) and the third scan line 212 outputs the scan signal G(3), that is, the second scan line 212 and the third scan line 212 When the voltage level of the scan line 212 rises, the control unit 214 receives the second sensing data on the third, fifth and seventh data lines 213 . At this time, the second sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the 3rd row, 2nd column and 4th row, 2nd column, which is the same as the The sum of the mutual capacitances between the sensing units 211 in row 3 and column 3. The second sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 2nd column and 4th row, 2nd column, which is the same as the 5th row, 3rd column and 4th row, 3rd column. The sum of the mutual capacitance between the sensing cells 211 of the column. The second sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row, 2nd column and 8th row, 2nd column, which is the same as the 7th row, 3rd column and 8th row, 3rd column. The sum of the mutual capacitance between the sensing cells 211 of the column.

In other words, in the above embodiment, the j-th second data line is electrically connected to the sensing units 211 in the 2n-1 row of the sensing array 215 , and the i-th first data line is electrically connected to the 2n-th row of the sensing array 215 . The sensing unit 211 on the row, the j+1 th second data line is electrically connected to the sensing unit 211 on the 2n+1 th row in the sensing array 215 , and the i+1 th first data line is electrically connected to the sensing array 215 In the case of the sensing unit 211 on the 2n+2th row, that is, the jth second data line, the ith first data line, the j+1th second data line, and the i+1th first data line are Set in order. When the k-th scan line outputs the scan signal G(k) and the k+1-th scan line outputs the scan signal G(k+1), the sensing unit 211 in the k-th column and the 2n-th row and the k-th column and 2n+ The sum of the mutual capacitance between the induction units 211 in row 1, and the mutual capacitance between the induction units 211 in the k+1 column and row 2n and the induction units 211 in the k+1 column and row 2n+1, as The first sensing data on the j+1th second data line. Similarly, the mutual capacitance between the inductive unit 211 in the kth column and the 2n+1 row and the inductive unit 211 in the kth column and the 2n+2 row is the same as that of the inductive unit in the k+1th column and the 2n+1 row. The sum of the mutual capacitance between 211 and the sensing unit 211 of the k+1th column and the 2n+2th row is used as the second sensing data on the j+1th second data line.

Next, the sensing method of the touch device 20 operating in the self-capacitance mode will be described. Please refer to FIG. 14 to FIG. 15 together. FIG. 14 is a sensing electrode layer of the touch device according to another embodiment of the present invention. and a schematic diagram of the control unit, FIG. 15 is a voltage timing diagram of the touch device operating in the self-capacitance mode according to another embodiment of the present invention. Taking the actual example of the aforementioned sensing array 215 with 3 scan lines 212, 8 data lines 213 and 3 columns and 8 rows, as shown in the figure, in the self-capacitance mode, the control unit 214 starts from the 8 data lines. 213 outputs data signals D( 1 ) to D( 8 ), and sequentially outputs scan signals G( 1 ) to G( 3 ) from the three scan lines 212 . In the time interval Prd5 in FIG. 15, when the first scan line 212 outputs the scan signal G(1) and the second scan line 212 outputs the scan signal G(2), the first data line 213 on the first data line 213 outputs the scan signal G(2). The three sensing data is the sum of the self-capacitance capacitance of the sensing unit 211 in the first row and the first column and the self-capacitance capacitance of the sensing unit 211 in the first row and the second column. The third sensing data on the second data line 213 is the sum of the self-capacitance capacitance of the sensing unit 211 in the second row and the first column and the self-capacitance capacitance of the sensing unit 211 in the second row and the second column. The third sensing data on the remaining data lines 213 is analogous, and each third sensing data is the sum of the self-capacitance capacitance in each sensing area W1 shown in FIG. 14 .

In the time interval Prd6, when the second scan line 212 outputs the scan signal G(2) and the third scan line 212 outputs the scan signal G(3), the control unit 214 receives the first data on the eight data lines 213. Three induction data. At this time, the third sensing data on the first data line 213 is the sum of the self-capacitance capacitance of the sensing cells 211 in the first row and the second column and the self-capacitance capacitance of the sensing cells 211 in the first row and the third column. The third sensing data on the second data line 213 is the sum of the self-capacitance capacitance of the sensing unit 211 in the second row and the second column and the self-capacitance capacitance of the sensing unit 211 in the second row and the third column. The third sensing data on the remaining data lines 213 Sensor data and so on. At this time, each third sensing data is the sum of the self-capacitance capacitances in each sensing area W2 shown in FIG. 14 .

Similarly, when the touch device 20 is used for fingerprint recognition, the concave and convex pattern of the fingerprint makes the contact area between the finger and the sensing unit 211 different, so that the touch device 20 can obtain each sensor array 251 in the mutual capacitance mode. The sum of the mutual capacitances of the four sensing units 211 and the sum of the self-capacitances of every two sensing units 211 in the sensing array 215 in the self-capacitance mode are obtained, so as to obtain the sensing data caused by the fingerprints in each area of the finger, thereby achieving identification The effect of hand fingerprints. In this embodiment, when the sensing array 215 of the touch device 20 is a matrix with M columns and N rows, the touch device 20 obtains the mutual capacitance sensing data of (2M−1)×(N−1) pens and M×( N-1) The self-capacitance of the pen corresponds to the data, and the finger area corresponding to the gap between the sensing units 211 can also be sensed to calculate the capacitance, so that the sensing resolution of the touch device 20 is further improved.

In one embodiment, the length of the conductor in each sensing unit 211 in the extending direction of the scan line 212 is 1.5 times to 3 times the length of the conductor in the extending direction of the data line 213 . In other words, when the length of the conductor in the extension direction of the scan line 212 is twice the length of the conductor in the extension direction of the data line 213, in the self-capacitance mode, when the control unit 214 outputs the output from the second scan line 212 When the scan signal G(2) and the scan signal G(3) are output from the third scan line 212, the length of each sensing region W1 in the extension direction of the scan line 212 is approximately equal to the length of the conductor in the extension direction of the data line 213 length.

In one embodiment, the control unit outputs the scan signal according to the clock signal and the start signal generated by the clock controller. The clock signal and the start signal generated by the clock generating signal can adjust the time for the control unit to generate the scan signal, the number of stages of the output scan signal, or other feasible adjustment contents, which are not limited in this embodiment.

In the drawings of the present invention, the shape of the sensing unit is only for convenience of display, and the invention does not limit the shape, quantity and shape of the sensing unit. In addition, when the control unit 214 outputs the scan signal G(k) from the k-th scan line 212 for half the expected time, the control unit 214 will output the scan signal G(k+ from the k+1-th scan line 212 again. The embodiment of 1) is only for convenience of description and drawing, and does not limit the scanning signal G(k+1) to be outputted when the output scanning signal G(k) reaches half of the expected time.

1 and FIG. 16 together. FIG. 16 is a flowchart showing the steps of the sensing method of the touch device according to an embodiment of the present invention. As shown in the figure, in step S301, in the mutual capacitance mode, the data signal T(i) is output from the i-th first data line [i], and in step S303, the M scan lines 112 are sequentially outputted from among them At least one output scan signal. In step S305, when the k-th scan line 112 of the M scan lines 112 outputs the scan signal G(k), the first sensing data on each of the second data lines is received. In step S307, the i+1 th first data line [i+1] is switched to output the data signal T(i+1). In step S309, when the k-th scan line 112 of the M scan lines 112 outputs the scan signal G(k), the second sensing data on each of the second data lines is received. The sensing method of the present invention has actually been disclosed in the above-mentioned embodiments, and the description of this embodiment will not be repeated here.

In view of the above, embodiments of the present invention provide a touch device and a sensing method thereof. The touch device operates in a self-capacitance mode and a mutual-capacitance mode by switching the control unit, so that the area and data volume of the touch sensing are increased. , and in the mutual capacitance mode, the touch device transmits data signals from part of the first data lines in time division, and then transmits data signals from another part of the first data lines, so that the sensing data on the second data lines It will not be the result of mutual capacity measurement with the first data lines on both sides at the same time, so the control unit will not misjudge the sensing area corresponding to the sensing data. In addition, through the mutual capacitance measurement in the mutual capacitance mode, the gap area between the sensing units can also be sensed as sensing data, thereby further improving the sensing capability and resolution of the touch device.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the scope of patent protection of the present invention. For the scope of protection defined by the present invention, please refer to the appended claims.

Claims (7)

1. A sensing method for a touch device, applicable to a sensing electrode layer, the sensing electrode layer has a plurality of sensing units, M scanning lines and N data lines, the sensing units are arranged in M columns and N rows A sensing array, wherein the sensing units in each column are electrically connected to one of the M scan lines, the sensing units in each row are electrically connected to one of the N data lines, and the data lines define are a plurality of first data lines and a plurality of second data lines, the i-th first data line in the first data lines is located in the j-th and j+1-th second data lines in the second data lines between the data lines, and the j+1 th second data line is located between the i th and the i+1 th first data line, the sensing method includes a mutual capacitance mode and a self capacitance mode, wherein in the Mutual capacitance mode includes: outputting a data signal from the i-th first data line; sequentially outputting a scan signal from at least one of the M scan lines; When the k-th scan line of the M scan lines outputs the scan signal, a first sensing data on each of the second data lines is received, wherein the first sensing data on the j+1-th second data line The data is the result of mutual capacity measurement between the sensing units in the kth row, the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the ith first data line , and each of the sensing units in the kth column is electrically connected to the kth scan line; switching the i+1 th first data line to output the data signal; and When the k-th scan line of the M scan lines outputs the scan signal, a second sensing data on each of the second data lines is received, wherein the second sensing data on the j+1-th second data line The data is that among the sensing units in the kth row, the sensing unit electrically connected to the j+1 th second data line and the sensing unit electrically connected to the i+1 th first data line measure the mutual capacitance the result of; In the step of sequentially outputting the scan signal from at least one of the M scan lines, it also includes outputting the scan signal from any two adjacent scan lines in the M scan lines. When the k and k+1 th scan lines output the scan signal, the first sensing data on the j+1 th second data line is associated with the sensing units in the k th row and the k+1 th row, a result of mutual capacitance measurement between the sensing units electrically connected to the j+1 th second data line and the sensing units electrically connected to the i th first data line; In the self-capacitance mode, including outputting the scan signal from any two adjacent scan lines in the M scan lines, when the k-th scan line and the k+1-th scan line in the M scan lines output the scan signal , receiving a third sensing data on each of the first data lines and receiving a third sensing data on each of the second data lines, wherein the third sensing data on the i-th first data line is associated with Among the sensing units electrically connected to the i-th first data line, the sensing unit electrically connected to the k-th scan line and the sensing unit electrically connected to the k+1-th scan line are self-capacitance measured. As a result, the third sensing data on the j+1th second data line is associated with the sensing units electrically connected to the j+1th second data line, and is electrically connected to the kth scan line. The sensing unit and the sensing unit electrically connected to the k+1 th scan line are the self-capacitance measurement results. 2 . The sensing method of a touch device as claimed in claim 1 , wherein the j-th second data line is electrically connected to the sensing units on the 2n-1-th row in the sensing array, and the i-th line The first data line is electrically connected to the sensing units on the 2nth row in the sensing array, the j+1th second data line is electrically connected to the sensing units on the 2n+1th row in the sensing array, and the j+1th second data line is electrically connected to the sensing units on the 2n+1th row in the sensing array The i+1 first data lines are electrically connected to the sensing units on the 2n+2th row in the sensing array. When the kth and k+1th scan lines output the scan signal, the i-th first data line is the first The third sensing data on the data line is the sum of the capacitances measured by the sensing unit at column k, row 2n and the sensing unit at column k+1, row 2n, and the j+1 second data line The third sensing data above is the sum of the capacitances measured by the sensing unit in the k-th column and row 2n+1 and the sensing unit in the k+1-th column and row 2n+1. 3 . The sensing method of a touch device as claimed in claim 2 , wherein when the k-th and k+1-th scan lines output the scan signal, the sensing unit in the k-th column and the 2n-th row and the The mutual capacitance between the induction unit in column k and row 2n+1 is the mutual capacitance between the induction unit in column k+1 and row 2n and the induction unit in column k+1 and row 2n+1. The sum of the capacity is used as the first sensing data on the j+1th second data line. 4. A touch device, comprising a sensing electrode layer, the sensing electrode layer comprising: A plurality of sensing units, arranged in a sensing array with M columns and N rows; M scan lines, the sensing units in each column of the sensing array are electrically connected to one of the M scan lines; N data lines, the sensing units in each row of the sensing array are electrically connected to one of the N data lines, the data lines are defined as a plurality of first data lines and a plurality of second data lines, the The i-th first data line in the first data lines is located between the j-th and j+1-th second data lines among the second data lines, and the j+1-th second data line is located in the j+1-th second data line. between i and i+1 first data lines; and a control unit, operating in a mutual capacitance mode and a self-capacitance mode, in the mutual capacitance mode, the control unit outputs a data signal from the i-th first data line, and sequentially from the M scan lines At least one outputs a scan signal, and when the k-th scan line of the M scan lines outputs the scan signal, the control unit receives a first sensing data on each of the second data lines, and the control unit switches from the k-th scan line to the scan signal. i+1 first data lines output the data signal, and sequentially output the scan signal from at least one of the M scan lines, when the k-th scan line among the M scan lines outputs the scan signal, the The control unit receives a second sensing data on each of the second data lines, wherein the first sensing data on the j+1 th second data line is the sensing units in the k th row, which are electrically connected to The result of the mutual capacitance measurement between the sensing unit of the j+1th second data line and the sensing unit electrically connected to the i-th first data line, the second sensing unit of the j+1th second data line The data is that among the sensing units in the kth row, the sensing unit electrically connected to the j+1 th second data line and the sensing unit electrically connected to the i+1 th first data line measure the mutual capacitance the result of; The control unit sequentially outputs the scan signal from any two adjacent scan lines in the M scan lines, when the k-th and k+1-th scan lines in the M scan lines output the scan signal, the The first sensing data on the j+1 second data line is associated with the sensing units in the kth row and the k+1th row, and is electrically connected to the sensing units on the j+1th second data line the result of mutual capacity measurement between the unit and the sensing units electrically connected to the i-th first data line; In the self-capacitance mode, the control unit sequentially outputs the scan signal from any two adjacent scan lines in the M scan lines, when the k th scan line and the k+1 th scan line in the M scan lines When outputting the scan signal, the control unit receives a third sensing data on each of the first data lines and receives a third sensing data on each of the second data lines, wherein the i-th first data line The third sensing data is associated with the sensing units electrically connected to the i-th first data line, the sensing unit electrically connected to the k-th scan line and electrically connected to the k+1-th scan line As a result of the self-capacitance measurement of the sensing unit, the third sensing data on the j+1 th second data line is associated with the sensing units electrically connected to the j+1 th second data line, and the electrical connection A self-capacitance measurement result of the sensing unit on the k-th scan line and the sensing unit electrically connected to the k+1-th scan line. 5 . The touch device of claim 4 , wherein the j-th second data line is electrically connected to the sensing units in the 2n-1-th row in the sensing array, and the i-th first data line The sensing units on the 2nth row in the sensing array are electrically connected, and the j+1 th second data line is electrically connected with the sensing units on the 2n+1 th row in the sensing array, and the i+1 th data line is electrically connected The first data line is electrically connected to the sensing units on the 2n+2th row in the sensing array. When the kth and k+1th scan lines output the scan signal, the i-th first data line The third sensing data is the sum of the capacitances measured by the sensing unit in column k, row 2n and the sensing unit in column k+1, row 2n. The third sensing data is the sum of the capacitances measured by the sensing unit in the k-th column and row 2n+1 and the sensing unit in the k+1-th column and row 2n+1. 6 . The touch device of claim 5 , wherein when the kth and k+1th scan lines output the scan signal, the sensing unit in the kth column and the 2nth row and the kth column and the kth column and the The sum of the mutual capacitance between the induction units in row 2n+1 and the mutual capacitance between the induction unit in column k+1, row 2n and the induction unit in column k+1, row 2n+1 is the first sensing data on the j+1th second data line. 7 . The touch device of claim 4 , wherein each of the sensing units comprises a conductor, and the length of the conductor in the extending direction of the scan lines is equal to the length of the conductor extending over the data lines. 8 . 1.5 to 3 times the length in the direction.