TWI490764B - Hybrid capacitive scan method - Google Patents

Description

Hybrid capacitive touch scanning method

The invention relates to a scanning method of a capacitive touch panel, in particular to a hybrid capacitive touch scanning method.

At present, capacitive touch scanning methods are generally divided into two types: self-inductive capacitance scanning method and mutual inductance capacitance scanning method, and self-inductance plus mutual inductance scanning method.

Self-inductive capacitance scanning method is an early development of capacitive touch scanning method, which has the advantage of good signal-to-noise ratio (SNR), but when used in multi-object recognition applications, it has the disadvantage of ghosting causing misjudgment of multiple objects; Therefore, the mutual inductance capacitance scanning method is developed for the ghost phenomenon, and this scanning method uses full-point scanning, so that the ghost-free phenomenon can be eliminated, and the capacitive touch panel truly realizes the multi-finger touch function, but the relative mutual inductance The disadvantage of the capacitance scanning method is that the noise is compared with the self-inductance capacitance scanning method.

Since multi-finger touch is already a basic function of capacitive touch panels, and is also widely used in various electronic products, especially handheld electronic products, the interference of capacitive touch scanning is caused by the complicated use environment of electronic products. There are many types of noise, such as AC signals and noise caused by liquids such as water droplets, which cause the mutual-capacity scanning method to cause misidentification of multi-object identification when it is interfered by such noise, and it is necessary to further improve it.

In view of the above, the current capacitive touch scanning method is susceptible to noise Disadvantages of the present invention, the main object of the present invention is to provide a hybrid capacitive touch scanning method to solve the problem of misjudgment caused by noise interference during scanning.

The main technical means for achieving the above purpose is to enable the hybrid capacitive touch scanning method to: obtain a first sensing information after scanning the touch panel by a single-ended input ground scanning method; and input the in-phase scanning mode by single-ended input After scanning the touch panel, obtaining a second sensing information; after scanning the touch panel by the double-ended input differential scanning method, obtaining a third sensing information; comparing the first and second sensing information, determining the touch panel Whether there is liquid present; if so, the second sensing information is selected as an output frame; if not, the third sensing information is selected as an output frame.

The above-mentioned invention mainly scans the single-ended input ground scanning method for sensing liquid and the single-phase input in-phase scanning method for not sensing liquid, and if the liquid existing on the capacitive touch panel exists, the first comparison can be made. After the difference between the sensing information and the second sensing information, it is confirmed that the liquid exists, and the second sensing information is output as an output frame for subsequent object recognition; if no liquid exists, the third sensing having the anti-AC noise is selected and outputted. Information; in this way, the output frame containing less noise induction can be output for subsequent object coordinate recognition, which reduces the recognition false positive rate.

Another technical means of the present invention is to enable the hybrid capacitive touch scanning method to include: After the touch panel is scanned by the single-ended input ground scanning mode, a first sensing information is obtained; after the single-ended input in-phase scanning mode is scanned, the second sensing information is obtained; and the double-side input differential scanning mode is used to scan the touch panel. After the control panel, obtaining a third sensing information; comparing the first and third sensing information, determining whether there is noise in the touch panel; if yes, selecting the third sensing information as an output frame; If not, the second sensing information is selected as an output frame.

The above-mentioned invention mainly scans the single-ended input ground scanning method for sensing AC noise and the double-ended input differential scanning method for not sensing AC noise, respectively, if the current capacitive touch panel processes the AC noise environment. Then, after comparing the difference between the first sensing information and the third sensing information, confirming that the existing AC noise exists, selecting the third sensing information as an output frame for subsequent object recognition; if no AC noise exists, Then, the third sensing information that does not sense the liquid is selected; thus, the sensing information including the less noise sensing amount can be output for object coordinate recognition, thereby reducing the recognition false positive rate.

According to still another aspect of the present invention, the hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input in-phase scanning manner to obtain a second sensing information; and scanning the touch with a double-ended input differential scanning method. After the panel, obtaining a third sensing information; After comparing the second and third sensing information, determining whether there is a non-touch object on the touch panel; if yes, selecting one of the second and third sensing information as an output frame.

Since the single-ended input is scanned by the in-phase scanning mode, it is subject to AC noise interference, but it is waterproof because it does not sense liquid. The double-ended input differential scanning mode scans exactly the opposite of the single-ended input in-phase scanning mode. Therefore, the present invention can determine the presence of liquid or AC noise by comparing the difference between the second and third sensing information for the use environment in which liquid or AC noise exists respectively, and select the better sensing information as the difference. Output frame.

According to still another aspect of the present invention, the hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input ground scanning method to obtain a first sensing information; and scanning the touch panel with a single-ended input in-phase scanning manner After obtaining the second sensing information, the third sensing information is obtained after scanning the touch panel by the double-ended input differential scanning method; after comparing the first and second sensing information, determining whether the touch panel has liquid Existing; and if so, confirming, by the first and second sensing information, an area where the liquid on the touch panel is located, and sensing the value corresponding to the second sensing information as an inductive value corresponding to the area in the output frame, And using the sensing value of the third sensing information corresponding to the rest of the area as the output image The box corresponds to the sensing value of the remaining area; and if not, the third sensing information is selected as an output frame.

The above invention also firstly compares the difference between the single-ended input ground scanning mode and the single-ended input in-phase scanning mode to confirm that there is liquid, and then determines the liquid position together, and uses the second sensing information as an output frame. The sensing value corresponding to the area, and the third sensing information is used as the sensing value corresponding to the remaining area outside the area in the output frame; the output frame is integrated with waterproof characteristics and anti-AC noise characteristics.

According to still another aspect of the present invention, the hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input in-phase scanning manner to obtain a second sensing information; and scanning the touch with a double-ended input differential scanning method. After the panel, a third sensing information is obtained; after comparing the second and third sensing information, determining whether the liquid is present on the touch panel; and if so, confirming the touch panel via the second and third sensing information In the area where the liquid is located, the sensing value corresponding to the second sensing information is used as the sensing value of the corresponding area in the output frame, and the sensing value of the remaining area corresponding to the third sensing information is used as the output image. The box corresponds to the sensing value of the remaining area; if not, the third sensing information is selected as an output frame.

The above invention also first compares the difference between the single-ended input in-phase scanning mode and the double-ended input differential scanning mode, so as to confirm When the liquid is recognized, the liquid position is determined together, and the second sensing information is used as the sensing value corresponding to the area in the output frame, and the third sensing information is used as the rest area outside the area in the output frame. The corresponding sensing value; the output frame is integrated with waterproof characteristics and anti-AC noise characteristics.

10‧‧‧Touch panel

20‧‧‧ Controller

Figure 1 is a schematic diagram of a single-ended input ground scan mode of the present invention.

Figure 2 is a schematic diagram of the present invention employing a single-ended input in-phase scanning mode.

Figure 3 is a schematic diagram of the present invention using a double-ended input differential scanning mode.

4 is a flow chart of a first preferred embodiment of the hybrid capacitive touch scanning method of the present invention.

FIG. 5A is a schematic diagram of performing the sensing signals of FIGS. 1 and 2 in a liquid environment on a touch panel.

FIG. 5B is a schematic diagram of performing the sensing signal of FIG. 3 in a liquid environment on the touch panel.

6 is a flow chart showing a second preferred embodiment of the hybrid capacitive touch scanning method of the present invention.

FIG. 7A is a schematic diagram of performing the sensing signals of FIG. 1 and FIG. 2 in an AC noise environment of the touch panel.

FIG. 7B is a schematic diagram of performing the sensing signal of FIG. 3 in a liquid environment on the touch panel.

Figure 8 is a flow chart showing a third preferred embodiment of the hybrid capacitive touch scanning method of the present invention.

FIG. 9 is a fourth preferred embodiment of the hybrid capacitive touch scanning method of the present invention Example flow chart.

Figure 10 is a flow chart showing a fifth preferred embodiment of the hybrid capacitive touch scanning method of the present invention.

FIG. 11A is a schematic diagram of performing the sensing signal of FIG. 3 in a liquid and AC noise environment of the touch panel.

FIG. 11B is a schematic diagram of performing the sensing signal of FIG. 2 in a liquid and AC noise environment on the touch panel.

FIG. 11C is a schematic diagram of performing the sensing signal of FIG. 9 or FIG. 10 in a liquid and AC noise environment on the touch panel.

In view of the fact that the current capacitive touch scanning method is susceptible to noise interference in the use environment, and the sensing information after scanning is used to identify the object coordinates, the present invention proposes the following hybrid capacitive touch scanning methods, which mainly adopt waterproof characteristics. The single-ended input in-phase scanning mode and the double-ended input differential scanning mode with anti-AC noise characteristics can identify and eliminate non-touch objects, and can further cooperate with single-ended devices that are not waterproof or have anti-AC noise characteristics. Enter the ground scan mode to identify non-touch objects.

Referring to FIG. 1 , the first axis X and the second axis Y of the capacitive touch panel 10 respectively include a plurality of sensing lines X1 X Xn , Y1 Y Ym and are connected to a controller 20 , wherein the control is performed. The device performs the above-mentioned single-ended input grounding scanning mode, which is a self-contained scanning method, that is, sequentially outputs a stimulation signal to each sensing line X1~Xn, Y1~Ym, and outputs a stimulus to the current sensing line X1. During the signal, the other sensing lines X2~Xn, Y1~Ym are grounded, and then the sensing signal of the sensing line X1 is received. in this way Repeat the scan until all the first and second axis sensing lines have obtained the sensing signal, and then output a set of sensing information. In addition, the scanning process can be repeated to make the sensing lines X1~Xn and Y1~Ym obtain the majority. The secondary sensing signal, and then taking the average sensing amount, and then outputting a set of sensing information by the average sensing amount.

Referring to FIG. 2, the single-ended input in-phase scanning mode is also a self-capacitance scanning method, and outputs stimulation signals to the sensing lines X1~Xn and Y1~Ym, and then sequentially receives the sensing lines X1~. The sensing signals of Xn and Y1~Ym can output a set of sensing information until all sensing lines X1~Xn and Y1~Ym obtain sensing signals. Since liquid such as water drops appears on the touch panel, and the position of the water drop corresponds to a plurality of adjacent sensing lines, although the voltage of each sensing line changes due to water droplets, the output is the same for all sensing lines. The phase stimulation signal can make the potentials between adjacent sensing lines the same or similar, so that the sensing signals of the sensing lines corresponding to the water drop position are sequentially received, and the sensing signal does not include the change of the water droplet sensing amount; Therefore, the sensing information outputted by the single-ended input in-phase scanning mode can effectively eliminate the interference of liquids such as water droplets, and has waterproof characteristics.

Referring to FIG. 3, the double-ended input differential scanning method is also a self-capacitance scanning method, which sequentially outputs stimulation signals to the sensing lines and outputs the stimulation signals to the current sensing line X1. The stimuli signal opposite to the current sensing line X1 stimulating signal phase is sent to the adjacent next sensing line X2, and then the sensing signal of the current sensing line X1 and its adjacent sensing line X2 is received, that is, When the two adjacent sensing lines are simultaneously interfered by AC noise, receiving the sensing signals of the two adjacent sensing lines X1 and X2, the two sensing signals will contain similar and opposite AC noise. Inductive amount, after the operation, the sensing quantity obtained by the current sensing line X1 can be excluded according to the sensing quantity obtained by another adjacent sensing line X2, and the sensing amount of the AC noise interference is excluded to obtain the final sensing of the current sensing line X1. The signal is scanned repeatedly until all the sensing lines X1~Xn and Y1~Ym obtain the last sensing signal, and a set of sensing information can be output; that is, the sensing signal outputted by the double-ended input differential scanning method has Anti-AC noise characteristics.

In the following, the embodiment of the present invention uses the single-ended input ground scanning mode, the single-ended input in-phase scanning mode, and the double-ended input differential scanning mode to perform the hybrid capacitive touch scanning method, but is not limited thereto.

First, referring to FIG. 4, the hybrid capacitive touch scanning method of the present invention uses a single-ended input grounding scanning method, respectively, when a liquid non-touch object appears in the environment and the finger does not touch the capacitive touch panel. After the single-ended input in-phase scanning mode and the double-ended input differential scanning mode scan the touch panel, a first sensing information, a second sensing information, and a third sensing information S10 are obtained, as shown in FIG. 5A, which is the first a sensing signal corresponding to a sensing line X1 in the sensing information and the third sensing information, wherein the sensing line X1 and the six sensing lines Y3~Y5 and Y7~Y9 of different axes sense a liquid presence; and as shown in FIG. 5B The second sensing information is water-resistant, so that the sensing line X1 and the six sensing lines Y3~Y5 and Y7~Y9 of different axes do not have any sensing amount; therefore, the first and second are compared. In the sensing information, the difference of the sensing signals of the same sensing line, if the difference exists, can further determine whether the difference exceeds a critical value S11, and can determine that there is liquid on the capacitive touch panel when the threshold value is exceeded, and The position of the liquid can be further identified; compared with Figure 5A and Figure 5B It can be seen that the positive sensing value of the sensing liquid is positive, and the sensing signals of the same sensing line are taken out from the first sensing information and the second sensing information for comparison, because the first sensing information corresponds to the sensing line of the liquid position. In the sensing signal of X1, the sensing quantity of the sensing line X1 and the sensing line Y3~Y5 and Y7~Y9 is positive, and the second information corresponds to the sensing signal of the liquid position sensing line X1, the sensing line X1 and the sensing The inductance of the line Y3~Y5 and Y7~Y9 is zero or close to zero, so the sensing signal of the sensing line X1 of the first sensing information is subtracted from the sensing line X1 of the second sensing information, and the sensing line Y3~Y5 The difference between the sensing quantity of the intersection of Y7 and Y9 is a positive value and exceeds the critical value, which means that the liquid exists in the sensing line X1; therefore, the present invention detects that there is liquid on the capacitive touch panel, and selects The second sensing information having the waterproof characteristic is used as the output frame S12; conversely, if it is detected that the capacitive touch panel is not subjected to liquid interference, the third sensing information output is selected as the output frame S13; thus, the output can be output Contains less noise Sensing the amount of information carried by the object coordinates identifying, reducing false identification.

As another embodiment of the hybrid capacitive touch scanning method for anti-AC noise, please refer to FIG. 6 , which also adopts single-ended input ground scanning mode, single-ended input in-phase scanning mode and double-ended input differential scanning. After scanning the touch panel, a first sensing information, a second sensing information, and a third sensing information S20 are respectively obtained; assuming that a finger is placed on one of the axes of one sensing line X1 and three other axis sensing lines Y3~ On the Y5, AC noise appears at the same time. As shown in FIG. 7A, the sensing signal obtained by scanning the sensing line X1 with the single-ended input ground scanning mode and the single-ended input in-phase scanning mode is the same as the three other axes. The amount of induction at the intersection of the sensing lines Y3~Y5 should be positively induced by the finger touch, but it is AC. The noise is negatively affected. Referring to FIG. 7B, the same condition is obtained by the double-ended input differential scanning method, and the sensing signal of the sensing line X1 is obtained, and the sensing is obtained by the double-ended input differential scanning method. The signal has anti-AC noise characteristics, so the sensing signal obtained by scanning the sensing line X1 can still correctly reflect the positive sensing quantity of the finger position. Therefore, as can be seen from FIG. 7A and FIG. 7B, after comparing the first and third sensing information, S21 can successfully determine whether there is AC noise on the touch panel; if the result is that the existing AC noise exists. And selecting the third sensing information as the output frame S22; if the result of the determination is that no AC noise exists, selecting the second sensing information as the output frame S23; thus, the output may include less AC noise sensing The amount of sensing information is used for object coordinate recognition to reduce the recognition false positive rate.

It can be seen from the above two embodiments that FIG. 5A and FIG. 5B can also determine whether liquid is present by the second and third sensing information, and FIG. 7A and FIG. 7B can also determine whether there is AC noise by the second and third sensing information. Therefore, another preferred embodiment of the hybrid capacitive touch scanning method of the present invention is as shown in FIG. 8. First, the touch panel is scanned by the single-ended input in-phase scanning mode and the double-ended input differential scanning mode, respectively. The second sensing information and the third sensing information S40 compare the sensing signals corresponding to the same sensing line in the second and third sensing information. If there is a difference between the two sensing signals, it means that the touch panel has liquid or A non-touch object such as AC noise exists; if no touch object exists, the third sensing information is selected as the output frame S45. If there is a touch object, the current non-touch object characteristic S42 is determined, that is, when there is a difference between the sensing signals corresponding to the same sensing line in the second and third sensing information, as shown in FIG. 5A and FIG. 5B. If the sensing line of the second sensing information has no sensing quantity, and the same sensing line of the third sensing information has a sensing quantity, if the non-touch object characteristic belongs to a liquid, then the second sensing information is selected and output as the output frame S43. As shown in FIG. 7A and FIG. 7B, if the sensing line of the third sensing information has no sensing quantity, and the same sensing line of the second sensing information has a sensing quantity to generate the difference, the third sensing information is selected and output as Output block S44. Therefore, in this embodiment, the single-ended input ground scan scanning program is reduced compared with the first embodiment, and the overall scanning efficiency is improved.

In addition, please refer to FIG. 9 again, which is another embodiment of the hybrid capacitive touch scanning method of the present invention, first adopting single-ended input ground scanning mode, single-ended input in-phase scanning mode and double-ended input differential Scanning the touch panel to obtain a first sensing information, a second sensing information, and a third sensing information S50, respectively, and comparing the first sensing information and the second sensing information to each other, and then determining the touch. Whether there is liquid on the panel, if there is liquid, the area S52 where the liquid on the touch panel is located is confirmed through the first and second sensing information, and the sensing value corresponding to the second sensing information is used as an output frame. The sensing value corresponding to the area is corresponding to the sensing value of the remaining area corresponding to the area corresponding to the third sensing information as the sensing value S53 corresponding to the remaining area in the output frame; thus, the output frame can be ensured that the output frame does not contain liquid The amount of sensing and the amount of AC noise are both waterproof and anti-AC noise. Preferably, if it is determined that no liquid is present, the third sensing information is also selected as the output frame S54 in order to avoid interference from the AC noise.

In addition, please refer to FIG. 10 again, which is another embodiment of the hybrid capacitive touch scanning method of the present invention, first adopting single-ended input in-phase scanning. After the touch panel is scanned by the dual-ended input differential scanning method, a second sensing information and a third sensing information are respectively obtained, and after comparing the second and third sensing information, it is determined whether there is liquid on the touch panel. If there is a liquid, the area S62 where the liquid on the touch panel is located is confirmed by the second and third sensing information, and the sensing value corresponding to the second sensing information is used as the sensing area corresponding to the output frame. The value, and the sensing value of the remaining area other than the third sensing information is used as the sensing value S63 corresponding to the remaining area in the output frame; thus, it is ensured that the output frame does not contain the sensing amount of the liquid and the AC miscellaneous The amount of sensing is both waterproof and anti-AC noise. Preferably, if it is determined that no liquid is present, the third sensing information is also selected as the output frame S64 in order to avoid interference from the AC noise.

Please refer to FIG. 11A, that is, when the touch panel is interfered by liquid and AC noise at the same time, the sensing signal of one of the sensing lines is scanned by the double-ended input differential scanning method, and the complex sensing line Y3~ interleaved with the other axis. The Y5 and Y10~Y12 positions are the liquid sensing signals, while the Y7~Y9 is the sensing amount of the finger after being interfered by the AC noise, and the FIG. 11B is scanned by the single-ended input in-phase scanning mode in the same FIG. 11A environment. Therefore, the sensing line and the other sensing line Y7~Y9 are affected by the AC noise and exhibit a negative sensing value; therefore, after scanning by the hybrid touch scanning method of FIGS. 9 and 10, the liquid sensing numerical value in FIG. 11A The sensing value of FIG. 11B is substituted, and the sensing value of the remaining position in the original image 11A is retained. As shown in FIG. 11C, the sensing signal of the sensing line has both waterproof characteristics and anti-AC noise characteristics.

The above description is only a preferred embodiment of the present creation, and is not The present invention is not limited to the scope of the present invention, and is not intended to limit the present invention, and is not limited to the scope of the present invention. Any equivalent modifications may be made to the above embodiments, and any simple modifications made to the above embodiments may be made in accordance with the technical essence of the present invention, without departing from the technical scope of the present disclosure. Equivalent changes and modifications are still within the scope of this creative technical solution.

Claims (25)

A hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input ground scanning method to obtain a first sensing information; and scanning a touch panel with a single-ended input in-phase scanning mode to obtain a second sensing information After scanning the touch panel with the double-ended input differential scanning method, obtaining a third sensing information; comparing the first and second sensing information, determining whether there is liquid on the touch panel; if yes, selecting the The second sensing information is used as an output frame; if not, the third sensing information is selected as an output frame. The hybrid capacitive touch scanning method of claim 1, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input ground scanning method comprises: sequentially outputting a stimulation signal to each sensing line, when When one of the sensing lines outputs a stimulus signal, the other sensing line is grounded; and the sensing signal of the sensing line that has sent the stimulation signal is sequentially received until all the sensing lines obtain the sensing signal and output a set of sensing information. The hybrid capacitive touch scanning method of claim 1, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input in-phase scanning mode comprises: simultaneously outputting a same phase of the stimulation signal to each sensing line. The sensing signals of the sensing lines are sequentially received until all the sensing lines obtain the final sensing signal, and a set of sensing information can be output. The hybrid capacitive touch scanning method of claim 1, wherein the touch panel comprises a plurality of sensing lines, and the double-ended input differential scanning method comprises: sequentially outputting a stimulation signal to each sensing line. And simultaneously outputting a stimulus signal of opposite phase to another sensing line adjacent to the current sensing line; receiving the sensing signals of the two sensing lines and performing operations to obtain the final sensing signal; repeating the above steps until all the sensing lines are finalized Inductive signal, you can output a set of sensing information. The hybrid capacitive touch scanning method according to any one of claims 2 to 4, wherein the step of determining whether the liquid is present on the touch panel is the same as comparing the first sensing information and the second sensing information The sensing signal corresponding to the sensing line, if there is a difference between the two sensing signals, represents the presence of liquid. A hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input ground scanning method to obtain a first sensing information; and scanning a touch panel with a single-ended input in-phase scanning mode to obtain a second sensing information After scanning the touch panel with the double-ended input differential scanning method, obtaining a third sensing information; comparing the first and third sensing information, determining whether there is noise on the touch panel; if yes, selecting The third sensing information is used as an output frame; if not, the second sensing information is selected as an output frame. The hybrid capacitive touch scanning method of claim 6, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input ground scanning method comprises: sequentially outputting a stimulation signal to each sensing line, when When one of the sensing lines outputs a stimulus signal, the other sensing line is grounded; and the sensing signal of the sensing line that has sent the stimulation signal is sequentially received until all the sensing lines obtain the sensing signal and output a set of sensing information. The hybrid capacitive touch scanning method of claim 6, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input in-phase scanning mode comprises: simultaneously outputting a same phase of the stimulation signal to each sensing line. The sensing signals of the sensing lines are sequentially received until all the sensing lines obtain the final sensing signal, and a set of sensing information can be output. The hybrid capacitive touch scanning method of claim 6, wherein the touch panel comprises a plurality of sensing lines, and the double-ended input differential scanning method comprises: sequentially outputting a stimulation signal to each sensing line. And simultaneously outputting a stimulus signal of opposite phase to another sensing line adjacent to the current sensing line; receiving the sensing signals of the two sensing lines and performing operations to obtain the final sensing signal; repeating the above steps until all the sensing lines are finalized Inductive signal, you can output a set of sensing information. The hybrid capacitive touch scanning method according to any one of claims 7 to 9, wherein the step of determining the touch panel is to compare the sensing signals corresponding to the same sensing line in the first sensing information and the third sensing information. If If there is a difference between the two inductive signals, it means that the AC noise exists. A hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input in-phase scanning manner to obtain a second sensing information; and scanning a touch panel with a double-ended input differential scanning method to obtain a third sensing Information; after comparing the second and third sensing information, determining whether there is a non-touch object on the touch panel; if yes, selecting one of the second and third sensing information as an output frame . In the hybrid capacitive touch scanning method described in claim 11, the step of determining whether the non-touch object exists on the touch panel compares the second sensing information and the sensing corresponding to the same sensing line in the third sensing information. Signal, if there is a difference between the two sensing signals, it means that the non-touch object exists. In the hybrid capacitive touch scanning method of claim 12, the step of selecting the second or third sensing information as the output frame includes: when the second sensing information and the third sensing information are the same There is a difference between the sensing signals corresponding to the line, wherein the sensing line of the second sensing information has no sensing quantity, and the same sensing line of the third sensing information has an sensing quantity, and the non-touch object characteristic belongs to the liquid, then the output is selected. The second sensing information. The hybrid capacitive touch scanning method of claim 12, wherein the step of selecting the second or third sensing information as the output frame comprises: There is a difference between the sensing signals of the second sensing information and the third sensing information, wherein the sensing line of the third sensing information has no sensing quantity, and the same sensing line of the second sensing information has an sensing quantity. Then select to output the third sensing information. The hybrid capacitive touch scanning method according to any one of claims 11 to 14, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input in-phase scanning mode comprises: simultaneously outputting each sensing line A stimulation signal of the same phase; receiving the sensing signals of the sensing lines in sequence, until all the sensing lines obtain the final sensing signal, and a set of sensing information can be output. The hybrid capacitive touch scanning method according to any one of claims 11 to 14, wherein the touch panel comprises a plurality of sensing lines, and the double-ended input differential scanning method comprises: sequentially sensing each strip The line outputs a stimulation signal, and simultaneously outputs an opposite phase stimulation signal to another sensing line adjacent to the current sensing line; receiving the sensing signals of the two sensing lines and performing operations to obtain the final sensing signal; repeating the above steps until All sensing lines get the final sensing signal to output a set of sensing information. A hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input ground scanning method to obtain a first sensing information; and scanning a touch panel with a single-ended input in-phase scanning mode to obtain a second sensing information After scanning the touch panel with double-ended input differential scanning, get a first After the first and second sensing information are compared, it is determined whether there is liquid on the touch panel; and if so, the area where the liquid on the touch panel is located is confirmed by the first and second sensing information, The sensing value corresponding to the second sensing information is used as the sensing value of the corresponding area in the output frame, and the sensing value of the remaining area corresponding to the third sensing information is used as the output area corresponding to the remaining area. The sensing value; and if not, the third sensing information is selected as an output frame. The hybrid capacitive touch scanning method of claim 17, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input grounding scanning method comprises: sequentially outputting a stimulation signal to each sensing line, when When one of the sensing lines outputs a stimulus signal, the other sensing line is grounded; and the sensing signal of the sensing line that has sent the stimulation signal is sequentially received until all the sensing lines obtain the sensing signal and output a set of sensing information. The hybrid capacitive touch scanning method of claim 17, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input in-phase scanning mode comprises: simultaneously outputting a same phase of the stimulation signal to each sensing line. The sensing signals of the sensing lines are sequentially received until all the sensing lines obtain the final sensing signal, and a set of sensing information can be output. The hybrid capacitive touch scanning method of claim 17, wherein the touch panel comprises a plurality of sensing lines, and the double-ended input differential scanning method comprises: Outputting a stimulus signal to each sensing line in sequence, and simultaneously outputting an opposite phase stimulation signal to another sensing line adjacent to the current sensing line; receiving the sensing signals of the two sensing lines and performing operations to obtain the final sensing signal Repeat the above steps until all the sensing lines have the final sensing signal to output a set of sensing information. The hybrid capacitive touch scanning method according to any one of claims 18 to 20, wherein the step of determining the touch panel is to compare the sensing signals corresponding to the same sensing line in the first sensing information and the second sensing information. If there is a difference between the two sensing signals, it means that the liquid exists. A hybrid capacitive touch scanning method includes: scanning a touch panel with a single-ended input in-phase scanning manner to obtain a second sensing information; and scanning a touch panel with a double-ended input differential scanning method to obtain a third sensing Information; after comparing the second and third sensing information, determining whether there is liquid on the touch panel; and if so, confirming the area of the liquid on the touch panel via the second and third sensing information, The sensing value corresponding to the area of the sensing information is used as the sensing value of the corresponding area in the output frame, and the sensing value of the remaining area outside the area corresponding to the third sensing information is used as the sensing corresponding to the remaining area in the output frame. The value; if not, the third sensing information is selected as an output frame. The hybrid capacitive touch scanning method of claim 22, wherein the touch panel comprises a plurality of sensing lines, and the single-ended input is in-phase scanning The system includes: simultaneously outputting a same phase of the stimulation signal to each of the sensing lines; sequentially receiving the sensing signals of the sensing lines until all the sensing lines obtain the final sensing signal, and outputting a set of sensing information. The hybrid capacitive touch scanning method of claim 22, wherein the touch panel comprises a plurality of sensing lines, and the double-ended input differential scanning method comprises: sequentially outputting a stimulation signal to each sensing line. And simultaneously outputting a stimulus signal of opposite phase to another sensing line adjacent to the current sensing line; receiving the sensing signals of the two sensing lines and performing operations to obtain the final sensing signal; repeating the above steps until all the sensing lines are finalized Inductive signal, you can output a set of sensing information. The hybrid capacitive touch scanning method of claim 23 or 24, wherein determining whether the touch panel has liquid is compared with the sensing signal corresponding to the same sensing line in the third sensing information and the second sensing information, if If there is a difference between the two inductive signals, it means that the liquid exists.