CN108874196B - Induction compensation method of touch sensor and touch panel thereof - Google Patents

Abstract

Translated fromChinese

本发明实施例提供一种触控传感器的感应量补偿方法及其触控面板。所述感应量补偿方法，可以是借由一伪手指电路而来仿真出当使用者手指所分别碰触在触控传感器上的每一感应节点的虚拟情形，并且进而获得到有关每一感应节点的增益系数，以确保当在感应节点所确实因外部物体碰触而产生出感应电容时，则可利用感应节点的增益系数来对目前的感应电容进行补偿，以抵销掉感应节点的基本电容所带来的增益影响。

Embodiments of the present invention provide a sensing amount compensation method of a touch sensor and a touch panel thereof. The inductive compensation method can simulate the virtual situation of each inductive node on the touch sensor when the user's finger touches the touch sensor by means of a pseudo-finger circuit, and then obtain information about each inductive node. The gain coefficient of the sensing node can be used to compensate the current sensing capacitance by using the gain coefficient of the sensing node to offset the basic capacitance of the sensing node. gain effect.

Description

Induction quantity compensation method of touch sensor and touch panel thereof

Technical Field

The present disclosure relates to the field of sensor technologies, and in particular, to an induction compensation method and a touch panel thereof, which can simulate a capacitance variation degree of each sensing node on a touch sensor when a finger of a user touches the sensing node in advance by using a known fake finger circuit (fake finger circuit).

Background

Touch panels are widely used in various electronic products, and even touch panels can be combined with display panels (display panels) to form touch display screens. Generally, a touch panel includes a touch sensor and a touch controller, the touch sensor is mainly a two-dimensional capacitive touch sensor, and includes a plurality of sensing lines (sensing lines) arranged along a first direction and a plurality of driving lines (driving lines) arranged along a second direction. The first direction and the second direction are perpendicular to each other, so that the sensing lines and the driving lines are staggered to form a plurality of sensing nodes. It should be understood that the first direction and the second direction can be generally expressed in an X direction and a Y direction.

In addition, when an external object (e.g., a user's finger) touches a certain sensing node to generate a sensing capacitance of the sensing node, the sensing capacitance of the sensing node is necessarily proportional to (Δ Cm/Cm). Wherein Cm is a basic capacitance of the sensing node, i.e. an existing sensing capacitance of the sensing node before the external object touches the sensing node, and Δ Cm is a capacitance variation of the sensing node caused by the external object touch. Because of the influence of the process, the basic capacitance of each sensing node may not be the same, and thus the sensing capacitance generated by the external object touching different sensing nodes will also be different. However, the difference phenomenon caused by the different basic capacitances of each sensing node can easily cause the touch controller to make a misjudgment.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a sensing quantity compensation method for a touch sensor and a touch panel thereof, and more particularly, to a sensing quantity compensation method and a touch panel thereof capable of simulating a capacitance variation degree of each sensing node on the touch sensor when a user's finger touches the sensing node in advance by using a known dummy finger circuit.

The embodiment of the invention provides a method for compensating induction quantity of a touch sensor. The induction quantity compensation method is executed in a touch controller. The touch sensor includes a plurality of sensing lines arranged along a first direction and a plurality of driving lines arranged along a second direction. The touch controller is electrically connected to the sensing lines and the driving lines of the touch sensor, and is used for transmitting a driving signal (driving signal) to the driving lines and receiving the sensing capacitance of each sensing node from the sensing lines. The steps of the induction compensation method are as follows. First, a capacitance variation associated with each sensing node is obtained by using at least one default circuit. Then, a gain factor corresponding to each sensing node is obtained according to the capacitance variation of each sensing node and the default circuit. Finally, for each of the sensing nodes, when an inductive capacitance is generated at a sensing node due to a touch of an external object, the gain coefficient of the sensing node is used to compensate the inductive capacitance generated at the sensing node due to the touch of the external object.

The embodiment of the invention further provides a touch panel. The touch panel comprises a touch sensor and a touch controller. The touch sensor comprises a plurality of sensing lines arranged along a first direction and a plurality of driving lines arranged along a second direction, wherein the first direction and the second direction are mutually vertical, the sensing lines and the driving lines are staggered to form a plurality of sensing nodes, and the touch controller is electrically connected with the sensing lines and the driving lines of the touch sensor, is used for transmitting a driving signal to the driving lines and receiving the sensing capacitance related to each sensing node from the sensing lines. The touch controller obtains a capacitance variation of each sensing node by using at least one default circuit, obtains a gain coefficient corresponding to each sensing node according to the capacitance variation of each sensing node and the default circuit, and compensates the sensing capacitance of each sensing node due to the touch of an external object by using the gain coefficient of the sensing node when the sensing capacitance is generated by the touch of the external object at the sensing node.

Preferably, the default circuit is a dummy finger circuit, and the dummy finger circuit is sequentially coupled between the driving lines and the sensing lines of each sensing node, and is configured to enable the touch controller to obtain a sensing capacitance associated with each sensing node due to the coupling of the dummy finger circuit.

Preferably, the pseudo finger circuit includes a first capacitor, a second capacitor and an electronic component (electronic component). The first end of the first capacitor is sequentially coupled to one of the driving lines, the first end of the second capacitor is coupled to the second end of the first capacitor, and the second end of the second capacitor is sequentially coupled to one of the sensing lines. In addition, the first terminal of the electronic component is coupled between the second terminal of the first capacitor and the first terminal of the second capacitor, and the second terminal of the electronic component is coupled to a ground voltage. The electronic component may be composed of at least one passive component.

Preferably, the touch controller performs the following steps to obtain the capacitance variation amount of each sensing node by using a default circuit. First, for each of the sensing nodes, when the dummy finger circuit is coupled between the driving line and the sensing line of a sensing node, the touch controller is configured to transmit a driving signal to the driving line of the sensing node to drive the sensing line of the sensing node to generate a sensing capacitance generated by the sensing node due to the dummy finger circuit coupling. Then, the capacitance variation of each sensing node is obtained by comparing the sensing capacitance generated by the coupling of the pseudo finger circuit of each sensing node with the ratio of a basic capacitance of each sensing node which is not existed before the touch of the external object.

Preferably, the touch controller further obtains a sensing value associated with each sensing node according to a sensing capacitance generated by each sensing node due to the coupling of the dummy finger circuit, and adjusts at least one sensing threshold of the touch controller according to the sensing values of the sensing nodes. The sensing threshold is used for judging whether the touch sensor is touched.

For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are included to illustrate, but are not to be construed as limiting the scope of the invention.

Drawings

Fig. 1 is a schematic flow chart illustrating a method for compensating an induction amount of a touch sensor according to an embodiment of the present invention.

Fig. 2 is a functional block diagram of a touch panel according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a default circuit in the touch panel of FIG. 2.

Fig. 4 is a schematic flow chart illustrating a process of obtaining a capacitance variation associated with each sensing node by using a default circuit in the sensing amount compensation method of the touch sensor of fig. 1.

Fig. 5 is a flowchart illustrating a method for compensating an induction amount of a touch sensor according to another embodiment of the invention.

Fig. 6 is a schematic flow chart illustrating a process of obtaining sensing values related to each sensing node and adjusting at least one sensing threshold according to the sensing values in the sensing amount compensation method of the touch sensor of fig. 5.

Fig. 7 is a functional block diagram of a touch panel according to another embodiment of the invention.

Fig. 8 is a circuit diagram of a converter in the touch panel of fig. 7.

Detailed Description

Hereinafter, the present invention will be described in detail by illustrating various embodiments of the present invention with the aid of the accompanying drawings. The inventive concept may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Moreover, in the drawings, like reference numerals may be used to designate similar components.

First, referring to fig. 1 and fig. 2 together, fig. 1 is a schematic flow chart of a method for compensating an induction amount of a touch sensor according to an embodiment of the present invention, and fig. 2 is a schematic functional block diagram of a touch panel according to an embodiment of the present invention. The method for compensating the sensing amount of the touch sensor of fig. 1 can be implemented in thetouch controller 22 of fig. 2, but the present invention does not limit the method of fig. 1 to be implemented only in thetouch controller 22 of fig. 2. In addition, thetouch panel 2 of fig. 2 is only one implementation of the method for compensating the sensing amount of the touch sensor, and is not intended to limit the present invention.

As shown in fig. 2, thetouch panel 2 includes atouch sensor 20 and atouch controller 22. Thetouch sensor 20 includes a plurality of sensing lines SA _1 to SA _ M arranged along a first direction and a plurality of driving lines DA _1 to DA _ N arranged along a second direction, wherein the first direction and the second direction are perpendicular to each other, and thus the sensing lines SA _1 to SA _ M and the driving lines DA _1 to DA _ N are interlaced to form a plurality of sensing nodes N _11 to N _ MN. It should be noted that, for convenience of the following description, the first direction and the second direction in the embodiment of the present invention are expressed by the X direction and the Y direction, but the present invention is not limited thereto. In addition, the sensing lines SA _1 to SA _ M and the driving lines DA _1 to DA _ M of the embodiment of the invention are all 9 (i.e., M and N are all equal to 9, and the sensing nodes have N _11 to N _99), but the invention is not limited thereto.

In addition, thetouch controller 22 is electrically connected to the sensing lines SA _1 to SA _9 and the driving lines DA _1 to DA _9 of thetouch sensor 20, and is configured to transmit a driving signal (not shown) to the driving lines DA _1 to DA _9, and then receive a sensing capacitance (not shown) associated with each of the sensing nodes N _11 to N _99 from the sensing lines SA _1 to SA _ 9. It should be noted that thetouch controller 22 can be implemented by a pure hardware circuit, or implemented by a hardware circuit with firmware or software, but the invention is not limited thereto. In summary, the present invention is not limited to the specific implementation of thetouch controller 22, and those skilled in the art should be able to design thetouch controller 22 according to actual requirements or applications.

Further, assuming that the sensing node N _88 is intersected by the sensing line SA _8 and the driving line DA _8 as an example, thetouch controller 22 transmits a driving signal to the driving line DA _8 of the sensing node N _88 and receives a sensing capacitance associated with the sensing node N _88 from the sensing line SA _8 of the sensing node N _ 88. However, when the sensing node N _88 is touched by an external object (e.g., a finger of a user), the sensing capacitance of the sensing node N _88 will change accordingly. Therefore, thetouch controller 22 can determine whether the sensing node N _88 (or the touch sensor 20) is touched by utilizing the variation characteristic. Since the above-mentioned operation is a conventional mutual inductance type (mutual capacitance type) sensing method, details thereof will not be described herein.

It should be noted that, as described above, since the sensing capacitance of the sensing node N _ ij (i.e., i and j are positive integers from 1 to 9, respectively) caused by the touch of the external object is proportional to (Δ Cm (N _ ij)/Cm (N _ ij)), and the basic capacitance Cm (N _11) -Cm (N _99) of each of the sensing nodes N _11 to N _99 may not be the same because of the bad process. Therefore, even under the same touch condition, the sensing capacitance of each sensing node N _11 to N _99 caused by the touch of the external object is different according to the basic capacitance Cm (N _11) to Cm (N _ 99). That is, the sensing capacitance generated by each of the sensing nodes N _11 to N _99 due to the touch of the external object is influenced by the basic capacitance Cm (N _11) to Cm (N _99) thereof to change. Therefore, this may easily cause thetouch controller 22 to make a false determination, and further cause an erroneous operation.

Therefore, the steps in fig. 1 will be described with reference to fig. 2. First, in step S101, thetouch controller 22 obtains the capacitance variation Δ Cm (N _11) - Δ Cm (N _99) associated with each of the sensing nodes N _ 11-N _99 by using at least one default circuit (not shown). Next, in step S103, thetouch controller 22 further obtains gain coefficients gm (N _11) to gm (N _99) corresponding to each of the sensing nodes N _11 to N _99 according to the capacitance variation Δ Cm (N _11) to Δ Cm (N _99) of each of the sensing nodes N _11 to N _99 and the default circuit. Finally, in step S105, for each of the sensing nodes N _11 to N _99, when the sensing node N _ ij generates the sensing capacitance due to the external object touch, thetouch controller 22 compensates the sensing capacitance generated by the sensing node N _ ij due to the external object touch by using the gain coefficient gm (N _ ij) of the sensing node N _ ij.

It should be noted that the present invention is not limited to the specific implementation of the compensation for the sensing capacitor, and therefore, those skilled in the art should be able to design the compensation according to the actual needs or applications. It should be noted that the above-mentioned "default circuit" may refer to a dummy finger circuit known in advance, but the present invention is not limited thereto. In other words, based on the above disclosure, those skilled in the art should understand that one of the main concepts of the present invention is to simulate the virtual situation when a user's finger (i.e., an external object) touches each of the sensing nodes N _11 to N _99 by using the pseudo finger circuit. Therefore, the dummy finger circuit must be sequentially coupled between the driving lines DA _1 to DA _9 and the sensing lines SA _1 to SA _9 of each of the sensing nodes N _11 to N _99, and thetouch controller 22 can obtain the sensing capacitance generated by the dummy finger circuit coupling with respect to each of the sensing nodes N _11 to N _ 99.

Next, the implementation of the default circuit of the present embodiment will be further described below. Referring to fig. 3, fig. 3 is a circuit diagram of a default circuit in the touch panel of fig. 2. Components in fig. 3 that are the same as those in fig. 2 are denoted by the same reference numerals, and thus, further description is omitted here. It should be noted that the default circuit of the embodiment of the present invention may be referred to as thedummy finger circuit 30 shown in fig. 3, but the present invention is not limited thereto. For convenience of the following description, thedummy finger circuit 30 of fig. 3 is described by taking an example between the driving line DA _8 and the sensing line SA _8 coupled to the sensing node N _88 (i.e., the connection point P1 and the connection point P2 in fig. 3 are respectively represented as two connection points of thedummy finger circuit 30 coupled to the driving line DA _8 and the sensing line SA _8), but the invention is not limited thereto.

As shown in FIG. 3, the pseudo finger circuit 30 (i.e., the default circuit) includes a first capacitor Cfd, a second capacitor Cfs, and anelectronic component 300. A first terminal of the first capacitor Cfd is coupled to the junction P1 (i.e., the driving line DA _8), a first terminal of the second capacitor Cfs is coupled to a second terminal of the first capacitor Cfd, and a second terminal of the second capacitor Cfs is coupled to the junction P2 (i.e., the sensing line SA _ 8). In practice, as described above, since thedummy finger circuit 30 must be sequentially coupled between the driving lines DA _1 to DA _9 and the sensing lines SA _1 to SA _9 of each of the sensing nodes N _11 to N _99, the first terminal of the first capacitor Cfd is sequentially coupled to one of the driving lines DA _1 to DA _9, and the second terminal of the second capacitor Cfs is sequentially coupled to one of the sensing lines SA _1 to SA _ 9. In addition, the unit of the first capacitor Cfd and the second capacitor Cfs may be, for example, 1pf, respectively, but the invention is not limited thereto.

In addition, the first terminal of theelectronic component 300 is coupled between the second terminal of the first capacitor Cfd and the first terminal of the second capacitor Cfd, and the second terminal of theelectronic component 300 is coupled to a ground voltage GND. However, since thepseudo finger circuit 30 is used to simulate a user's finger, theelectronic component 300 in thepseudo finger circuit 30 may be composed of at least one passive component, for example. In one application, theelectronic component 300 may be a resistor R _ HBM, as shown in FIG. 3, and the unit of the resistor R _ HBM may be, for example, 1.5k ohms; still alternatively, in other applications, theelectronic component 300 may also be an inductor (not shown), or even a series combination of a resistor R _ HBM and another capacitor (not shown), or the like. In summary, the present invention is not limited thereto, and those skilled in the art should be able to design theelectronic device 300 according to actual requirements or applications.

Thus, when thedummy finger circuit 30 is coupled between the driving line DA _8 (i.e., the node P1) of the sensing node N _88 and the sensing line SA _8 (i.e., the node P2), thetouch controller 22 transmits a driving signal to the driving line DA _8 of the sensing node N _88 to drive the sensing line SA _8 of the sensing node N _88 to generate the sensing capacitance Cm' generated by the sensing node N _88 due to the coupling of thedummy finger circuit 30. Then, thetouch controller 22 can obtain the capacitance variation Δ Cm (N _88) related to the sensing node N _88 according to a comparison between the sensing capacitance Cm 'generated by the sensing node N _88 due to the coupling of thedummy finger circuit 30 and a ratio between the sensing capacitance Cm' of the sensing node N _88 not touched by an external object or a basic capacitance Cm (N _88) existing before the coupling of thedummy finger circuit 30.

For example, the capacitance variation Δ Cm (N _88) caused by thedummy finger circuit 30 at the sensing node N _88 can be, for example, equal to the basic capacitance Cm (N _88) of the sensing node N _88, and then the sensing capacitance Cm' of fig. 3 is subtracted, but the invention is not limited thereto. In summary, the present invention is not limited to the specific implementation of the capacitance variation Δ Cm (N _ ij) of the sensing node N _ ij obtained by thetouch controller 22, and therefore, those skilled in the art should be able to design the capacitance variation Δ Cm (N _ ij) according to actual requirements or applications.

On the other hand, please refer to fig. 4 to describe step S101 in fig. 1. Fig. 4 is a schematic flow chart illustrating a process of obtaining a capacitance variation associated with each sensing node by using a default circuit in the sensing amount compensation method of the touch sensor of fig. 1. In the method of fig. 4, thedummy finger circuit 30 of fig. 3 is also used as a default circuit according to an embodiment of the present invention, so please refer to fig. 2 and fig. 3 for understanding. In addition, the same flow steps in fig. 4 as those in fig. 1 are denoted by the same reference numerals, and thus the details thereof will not be described herein.

Specifically, step S101 in fig. 4 may further include step S401 to step S403. First, in step S401, for each of the sensing nodes N _11 to N _99, when thedummy finger circuit 30 is coupled between the driving line DA _ i and the sensing line SA _ j of the sensing node N _ ij, thetouch controller 22 is configured to transmit a driving signal to the driving line DA _ i of the sensing node N _ ij to drive the sensing line SA _ j of the sensing node N _ ij to generate the sensing capacitance Cm' generated by thedummy finger circuit 30 coupled to the sensing node N _ ij.

Next, in step S403, thetouch controller 22 obtains capacitance variations Δ Cm (N _11) - Δ Cm (N _99) associated with each of the sensing nodes N _ 11-N _99 according to a comparison between the sensing capacitances Cm '(N _11) -Cm' (N _99) generated by each of the sensing nodes N _ 11-N _99 due to the coupling of thedummy finger circuit 30 and the basic capacitances Cm (N _11) -Cm (N _99) of each of the sensing nodes N _ 11-N _99 that are not touched by an external object or existed before the coupling of the dummy finger circuit.

Furthermore, as shown in fig. 3, since the components in the pseudo finger circuit 30 (i.e., the first capacitor Cfd, the second capacitor Cfs and the resistor R _ HBM) are known parameter components, and thetouch controller 22 can also obtain the capacitance variation Δ Cm (N _88) caused by thepseudo finger circuit 30 on the sensing node N _88, thetouch controller 22 can obtain the gain coefficient gm (N _88) corresponding to the sensing node N _88 by utilizing the relationship. It should be noted that the above-mentioned embodiments are only examples, and are not intended to limit the present invention. In summary, the embodiments of the present invention are not limited to the specific implementation manner of obtaining the gain coefficient gm (N _ ij) of the sensing node N _ ij, so that those skilled in the art can design the gain coefficient gm (N _ ij) according to the actual requirements or applications.

In summary, since the sensing capacitance generated by each sensing node N _ 11-N _99 due to the touch of the external object is affected by its own basic capacitance Cm (N _11) -Cm (N _99), the important point of the present invention is that the capacitance variation Δ Cm (N _11) - Δ Cm (N _99) of each sensing node N _ 11-N _99 can be simulated and obtained in advance by using the known dummy finger circuit, and then the gain coefficients (N _11) -gm (N _99) corresponding to each sensing node N _ 11-N _99 can be obtained, so that when the current sensing capacitance generated by the sensing node N _ ij due to the touch of the external object is generated, thetouch controller 22 of the embodiment of the present invention can compensate the current sensing capacitance by using the gain coefficient gm (N _ ij) of the sensing node N _ ij, thereby canceling out the gain effect of the basic capacitor Cm (N _ ij).

For example, if the gain coefficient gm (N _88) of the sensing node N _88 is 1.025, that is, the sensing capacitance Cm' generated by thedummy finger circuit 30 coupled to the sensing node N _88 is obviously increased by 0.025 times by the influence of the basic capacitance Cm (N _ 88). Therefore, when the sensing node N _88 actually generates the current sensing capacitance due to the touch of the external object, thetouch controller 22 of the embodiment of the invention can compensate the current sensing capacitance by using the gain coefficient gm (N _88) of the sensing node N _88 to offset the increased gain of 0.025 times.

In addition, thetouch controller 22 of the embodiment of the invention may determine whether thetouch sensor 20 is actually touched by an external object by determining whether the sensing capacitance of each of the sensing nodes N _11 to N _99 is lower than a threshold value. Therefore, when it is considered that the sensing capacitance of each of the sensing nodes N _11 to N _99 is changed due to the influence of its own basic capacitance Cm (N _11) to Cm (N _99), the sensing amount compensation method of the touch sensor and the touch panel thereof provided by the embodiment of the invention may be further configured with different technical means (for example, adaptively adjusting the threshold value) to avoid thetouch controller 22 from making a false determination.

For example, please refer to fig. 5, wherein fig. 5 is a flowchart illustrating a sensing quantity compensation method of a touch sensor according to another embodiment of the present invention. The method of fig. 5 can be implemented in thetouch controller 22 of fig. 2 as well, and thepseudo finger circuit 30 of fig. 3 is also used as the default circuit of the present embodiment, so please refer to fig. 2 and fig. 3 for understanding, and details thereof are not repeated herein. In addition, the same flow steps in fig. 5 as those in fig. 1 are denoted by the same reference numerals, and therefore, the details thereof will not be further described herein.

Specifically, compared to the method of fig. 1, the method of fig. 5 further includes steps S501 to S503. First, in step S501, thetouch controller 22 can further obtain a sensing value related to each of the sensing nodes N _11 to N _99 according to the sensing capacitances Cm '(N _11) to Cm' (N _99) generated by the coupling of thedummy finger circuit 30 for each of the sensing nodes N _11 to N _ 99. In addition, in step S503, thetouch controller 22 adjusts at least one sensing threshold (not shown) of thetouch controller 22 according to the sensing values of the sensing nodes N _11 to N _ 99.

It should be noted that the term "sensing threshold" refers to a threshold used in the above description to determine whether thetouch sensor 20 is actually touched. In addition, based on the above teachings, those skilled in the art should understand that step S103 and steps S501 to S503 are executed in parallel without conflict. That is, while thetouch controller 22 is executing the step S103, thetouch controller 22 can further obtain the sensing value of each sensing node N _ 11-N _99 by using the sensing capacitance Cm '(N _11) -Cm' (N _99) generated by the coupling of thedummy finger circuit 30 of each sensing node N _ 11-N _99, and adjust the sensing threshold value originally used for determining whether thetouch sensor 20 is actually touched according to the sensing values of the sensing nodes N _ 11-N _ 99.

It should be noted that, for the method for compensating the sensing amount of the touch sensor and the touch panel thereof provided in the embodiment of the invention, how to perform the subsequent determination of whether the sensing capacitance of each of the sensing nodes N _11 to N _99 is lower than the sensing threshold is not an important point to be discussed in the present patent, and therefore, the above description is only taken as an illustration, and the following description is not repeated. In addition, it should be understood that thetouch panel 2 of fig. 2 may further include at least one memory unit (not shown), and the memory unit is responsible for storing the sensing threshold.

On the other hand, in order to further explain details about implementation of steps S501 to S503, the present invention further provides one embodiment of the present invention. Referring to fig. 6 and 7, fig. 6 is a schematic flow chart illustrating a process of obtaining sensing values related to each sensing node in the sensing amount compensation method of the touch sensor of fig. 5 and adjusting at least one sensing threshold according to the sensing values, and fig. 7 is a schematic functional block diagram of a touch panel according to another embodiment of the invention. The method for compensating the sensing amount of the touch sensor of fig. 6 can be implemented in thetouch controller 72 of fig. 7, but the present invention does not limit the method of fig. 6 to be implemented only in thetouch controller 72 of fig. 7. In addition, thetouch panel 7 of fig. 7 is only one implementation of the method for compensating the sensing amount of the touch sensor, and is not intended to limit the present invention.

It should be noted that the same flow steps in fig. 6 as those in fig. 5 are denoted by the same reference numerals, and therefore, the details thereof will not be described in detail. In addition, components in fig. 7 that are the same as or similar to those in fig. 2 are denoted by the same or similar reference numerals, and thus, further description is omitted here. In addition, thepseudo finger circuit 30 of fig. 3 can be used as a default circuit of the present embodiment in thetouch panel 7 of fig. 7, so please refer to fig. 3 for understanding.

Further, compared to thetouch controller 22 of fig. 2, thetouch controller 72 of fig. 7 may further include at least oneconverter 700, at least one analog-to-digital converter 720 and adigital signal processor 740. In addition, in the embodiment of fig. 6, the steps S501 and S503 may further include steps S601 and S603 to S605, respectively. First, in step S601, thetouch controller 72 may utilize at least oneconverter 700 to receive the sensing capacitances Cm '(N _11) to Cm' (N _99) generated by the coupling of thedummy finger circuit 30 from each of the sensing nodes N _11 to N _99, and thereby output the sensing values VS1(N _11) to VS1(N _99) associated with each of the sensing nodes N _11 to N _ 99. Next, in step S603, thetouch controller 72 may further utilize at least one adc 720 to convert the sensing values VS1(N _11) -VS 1(N _99) output from each sensing node N _ 11-N _99 of theconverter 700 due to the coupling of thedummy finger circuit 30, so as to generate digital voltage signals VS2(N _11) -VS 2(N _99) associated with each sensing node N _ 11-N _99 due to the coupling of thedummy finger circuit 30.

Next, in step S605, thetouch controller 72 utilizes thedsp 740 to adjust the sensing threshold of thetouch controller 72 according to the digital voltage signals VS2(N _11) -VS 2(N _99) of the sensing nodes N _ 11-N _ 99. It is to be noted that, for the convenience of the following description, theconverters 700 and the analog-to-digital converters 720 of the embodiments of the present invention are described by taking the number of the examples as 1, but the present invention is not limited thereto. For example, in one application, thetouch controller 72 may also include the same number ofconverters 700 and analog-to-digital converters 720 as the number of the sensing lines SA _1 to SA _9, and eachconverter 700 is respectively coupled between one of the sensing lines SA _ j and one of the analog-to-digital converters 720. Therefore, when thedummy finger circuit 30 is coupled to the sensing node N _ ij, theconverter 700 corresponding to the sensing line SA _ j of the sensing node N _ ij outputs the sensing value VS1(N _ ij) generated by the sensing node N _ ij due to the coupling of thedummy finger circuit 30, and theadc 720 at the back end further converts the digital voltage signal VS2(N _ ij) generated by the sensing node N _ ij due to the coupling of thedummy finger circuit 30.

Alternatively, in other applications, thetouch panel 7 may further include a switch (switch) to connect thesingle switch 700 to the plurality of sensing lines SA _1 to SA _9 and thesingle adc 720. In summary, the present invention is not limited thereto, and those skilled in the art should be able to design the invention according to actual needs or applications. Based on the above teachings, it should be understood by those skilled in the art that theconverter 700 can be, for example, a capacitor-to-voltage converter, but the invention is not limited thereto. Therefore, to further illustrate details regarding the implementation of theconverter 700, the present invention further provides one embodiment thereof. Referring to fig. 8, fig. 8 is a circuit diagram of a converter in the touch panel of fig. 7.

It should be noted that the embodiments of the capacitor-to-voltage converter described below are only examples, and are not intended to limit the present invention, and in summary, the present invention is not limited to the specific implementation of the capacitor-to-voltage converter. In addition, for the convenience of the following description, thedummy finger circuit 30 in the embodiment of fig. 8 is only illustrated by using an example between the driving line DA _8 and the sensing line SA _8 coupled to the sensing node N _ 88. Therefore, the components in fig. 8 that are the same as those in fig. 3 are denoted by the same reference numerals, and thus, the description thereof is not repeated herein.

As shown in fig. 8, theconverter 700 mainly includes an operational amplifier OP and a negative feedback circuit LC. The inverting input terminal (inverting input) of the operational amplifier OP is coupled to the node P2 (i.e., the sensing line SA _8), the non-inverting input terminal (non-inverting input) of the operational amplifier OP is coupled to a reference voltage Vref, and the output terminal of the operational amplifier OP is used for outputting a sensing value VS1(N _88) related to the sensing node N _88 generated by the coupling of thedummy finger circuit 30. In addition, the negative feedback circuit LC is coupled between the inverting input terminal and the output terminal of the operational amplifier OP, and is composed of a third capacitor Cf and a resistor Rf connected in parallel.

As can be seen from the above, for each of the sensing nodes N _11 to N _99, in practice, when the sensing node N _ ij is coupled to thedummy finger circuit 30 to generate the sensing capacitor Cm' (N _ ij), the inverting input terminal of the operational amplifier OP is coupled to the sensing line SA _ j corresponding to the sensing node N _ ij, and the output terminal of the operational amplifier OP is used to output the sensing value VS1(N _ ij) generated by thedummy finger circuit 30 coupled to the sensing node N _ ij. However, since the operation principle of the capacitor-voltage converter is also known in the art, details about the operational amplifier OP and the negative feedback circuit LC are not further described herein.

In summary, since thedigital signal processor 740 can finally obtain the digital voltage signals VS2(N _11) -VS 2(N _99) generated by the coupling of thepseudo finger circuit 30 with respect to each sensing node N _ 11-N _99, thedigital signal processor 740 can intuitively design the sensing threshold value to be adjusted by using the digitized data information. It should be noted that how to design and adjust the sensing threshold for the method for compensating the sensing amount of the touch sensor and the touch panel thereof provided by the embodiment of the invention is not an important point to be discussed in the present patent, and therefore, the above description is only for illustrative purposes and will not be described in more detail below.

In summary, the sensing amount compensation method of the touch sensor and the touch panel thereof according to the embodiments of the invention can simulate the virtual situation when the user's finger touches each sensing node on the touch sensor respectively by using the known dummy finger circuit, and further obtain the gain coefficient of each sensing node, so as to ensure that when the current sensing capacitance is actually generated at a certain sensing node due to the touch of an external object, the current sensing capacitance can be compensated by using the gain coefficient of the sensing node, thereby canceling out the gain influence caused by the basic capacitance of the sensing node, and avoiding the occurrence of erroneous determination.

The above description is only a preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and those skilled in the art can easily conceive of changes and modifications within the scope of the present invention, and all such changes and modifications can be covered by the claims.

Claims (16)

Translated fromChinese

1.一种触控传感器的感应量补偿方法，执行于一触控控制器中，所述触控传感器包括沿着一第一方向排列的多条感应线，以及沿着一第二方向排列的多条驱动线，其中所述第一方向与所述第二方向彼此相互垂直，且所述多条感应线与所述多条驱动线交错构成出多个感应节点，所述触控控制器电性连接于所述触控传感器的所述多条感应线及所述多条驱动线，并且用以传递一驱动信号至所述多条驱动线，再从所述多条感应线接收得到有关所述多个感应节点的每一个的一感应电容，其特征在于，所述感应量补偿方法包括：1. A sensing amount compensation method of a touch sensor, executed in a touch controller, wherein the touch sensor comprises a plurality of sensing lines arranged along a first direction, and a plurality of sensing lines arranged along a second direction A plurality of driving lines, wherein the first direction and the second direction are perpendicular to each other, and the plurality of sensing lines and the plurality of driving lines are interdigitated to form a plurality of sensing nodes, and the touch controller is electrically is connected to the plurality of sensing lines and the plurality of driving lines of the touch sensor, and is used to transmit a driving signal to the plurality of driving lines, and then receive relevant information from the plurality of sensing lines. an inductive capacitance of each of the plurality of inductive nodes, wherein the inductive amount compensation method includes:通过利用至少一默认电路而来获得到有关所述多个感应节点的每一个的一电容变化量，所述默认电路包含已知的至少一电容器，并且是在与所述多个感应节点的每一个耦接时能够让所述感应节点产生所述感应电容，使得所述触控控制器再根据所述感应电容得到所述电容变化量；A capacitance variation with respect to each of the plurality of sensing nodes is obtained by utilizing at least one default circuit, the default circuit including known at least one capacitor and being at each of the plurality of sensing nodes When one is coupled, the sensing node can generate the sensing capacitance, so that the touch controller obtains the capacitance variation according to the sensing capacitance;根据所述多个感应节点的每一个的所述电容变化量以及所述默认电路，来获得到相应于所述多个感应节点的每一个的一增益系数；以及obtaining a gain factor corresponding to each of the plurality of sensing nodes according to the capacitance variation of each of the plurality of sensing nodes and the default circuit; and对于所述多个感应节点的每一个而言，当在所述感应节点所因一外部物体碰触而产生出所述感应电容时，则利用所述感应节点的所述增益系数来对所述感应节点所因所述外部物体碰触而产生的所述感应电容进行补偿。For each of the plurality of sensing nodes, when the sensing capacitance is generated due to the touch of an external object at the sensing node, the gain coefficient of the sensing node is used to The sensing capacitance generated by the sensing node due to the touch of the external object is compensated.2.如权利要求1所述的感应量补偿方法，其特征在于，其中所述默认电路为一伪手指电路，所述伪手指电路则按序耦接至所述多个感应节点的每一个的所述驱动线及所述感应线之间，并且用以来使得所述触控控制器获得到有关所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容。2 . The induction compensation method according to claim 1 , wherein the default circuit is a pseudo-finger circuit, and the pseudo-finger circuit is sequentially coupled to each of the plurality of sensing nodes. 3 . between the driving line and the sensing line, and used to enable the touch controller to obtain the sensing capacitance generated by the coupling of the pseudo-finger circuit for each of the plurality of sensing nodes .3.如权利要求2所述的感应量补偿方法，其特征在于，其中所述伪手指电路包括：3. The induction compensation method according to claim 2, wherein the pseudo-finger circuit comprises:一第一电容器，具有一第一端及一第二端，其中所述第一电容器的所述第一端则按序耦接至所述多条驱动线的其中之一；a first capacitor having a first end and a second end, wherein the first end of the first capacitor is sequentially coupled to one of the plurality of driving lines;一第二电容器，具有一第一端及一第二端，其中所述第二电容器的所述第一端耦接至所述第一电容器的所述第二端，且所述第二电容器的所述第二端则按序耦接至所述多条感应线的其中之一；以及a second capacitor having a first end and a second end, wherein the first end of the second capacitor is coupled to the second end of the first capacitor, and the second end of the second capacitor is the second end is sequentially coupled to one of the plurality of sensing lines; and一电子组件，其中所述电子组件的一第一端耦接至所述第一电容器的所述第二端及所述第二电容器的所述第一端之间，且所述电子组件的一第二端则耦接至一接地电压。An electronic component, wherein a first end of the electronic component is coupled between the second end of the first capacitor and the first end of the second capacitor, and a first end of the electronic component is coupled between the second end of the first capacitor and the first end of the second capacitor The second end is coupled to a ground voltage.4.如权利要求3所述的感应量补偿方法，其特征在于，其中所述电子组件由至少一被动组件所组成。4. The inductive compensation method according to claim 3, wherein the electronic component is composed of at least one passive component.5.如权利要求4所述的感应量补偿方法，其特征在于，其中在通过利用所述默认电路而来获得到有关所述多个感应节点的每一个的所述电容变化量的步骤中，还包括：5. The inductive amount compensation method according to claim 4, wherein in the step of obtaining the capacitance variation about each of the plurality of inductive nodes by using the default circuit, Also includes:对于所述多个感应节点的每一个而言，当在所述伪手指电路耦接至所述感应节点的所述驱动线及所述感应线之间时，所述触控控制器则用以传递所述驱动信号至所述感应节点的所述驱动线，以驱动所述感应节点的所述感应线产生出所述感应节点所因所述伪手指电路耦接而产生的所述感应电容；以及For each of the plurality of sense nodes, when the pseudo-finger circuit is coupled between the drive line and the sense line of the sense node, the touch controller is used to transmitting the driving signal to the driving line of the sensing node, so as to drive the sensing line of the sensing node to generate the sensing capacitance generated by the sensing node due to the coupling of the pseudo-finger circuit; as well as根据比较所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，以及所述多个感应节点的每一个所未因所述外部物体碰触前就已存在的一基本电容间的比值，来获得到有关所述多个感应节点的每一个的所述电容变化量。According to comparing the sensing capacitance generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit, and each of the plurality of sensing nodes before being touched by the external object There is a ratio between basic capacitances to obtain the amount of capacitance change with respect to each of the plurality of sensing nodes.6.如权利要求5所述的感应量补偿方法，其特征在于，所述感应量补偿方法还包括：6. The induction amount compensation method according to claim 5, wherein the induction amount compensation method further comprises:根据所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，来获得到有关所述多个感应节点的每一个的一感测值；以及obtaining a sensing value related to each of the plurality of sensing nodes according to the sensing capacitance generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit; and根据所述多个感应节点的所述感测值，来调整所述触控控制器中的至少一感测阈值，其中所述感测阈值是用来判断所述触控传感器是否有被碰触。At least one sensing threshold in the touch controller is adjusted according to the sensing values of the plurality of sensing nodes, wherein the sensing threshold is used to determine whether the touch sensor is touched .7.如权利要求6所述的感应量补偿方法，其特征在于，其中在根据所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，来获得到有关所述多个感应节点的每一个的所述感测值的步骤中，还包括：7 . The sensing amount compensation method according to claim 6 , wherein the sensing capacitance is obtained according to the sensing capacitance generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit. 8 . In the step of the sensing value of each of the plurality of sensing nodes, further comprising:利用至少一转换器，接收自所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，并借以输出有关所述多个感应节点的每一个的所述感测值。Utilizing at least one converter to receive the sensing capacitance generated by the coupling of the pseudo-finger circuit from each of the plurality of sensing nodes, and thereby output the sensing capacitance associated with each of the plurality of sensing nodes sensed value.8.如权利要求7所述的感应量补偿方法，其特征在于，其中在根据所述多个感应节点的所述感测值，来调整所述触控控制器中的所述至少一感测阈值的步骤中，还包括：8 . The sensing amount compensation method of claim 7 , wherein the at least one sensing element in the touch controller is adjusted according to the sensing values of the plurality of sensing nodes. 9 . The steps of thresholding also include:利用至少一模拟数字转换器，来对输出自所述转换器的所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感测值进行转换，借以产生有关所述多个感应节点的每一个所因所述伪手指电路耦接而产生的一数字电压信号；以及At least one analog-to-digital converter is used to convert the sensed value generated by each of the plurality of sense nodes output from the converter due to the coupling of the pseudo-finger circuit, thereby generating information about the a digital voltage signal generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit; and利用一数字信号处理器，根据所述多个感应节点的所述数字电压信号，来调整所述触控控制器中的所述感测阈值。Using a digital signal processor, the sensing threshold in the touch controller is adjusted according to the digital voltage signals of the plurality of sensing nodes.9.如权利要求7所述的感应量补偿方法，其特征在于，其中所述转换器为一电容电压转换器，且其包括：9. The inductance compensation method of claim 7, wherein the converter is a capacitance-to-voltage converter, comprising:一运算放大器，具有一反相输入端、一非反相输入端及一输出端，所述运算放大器的所述非反相输入端耦接至一参考电压，其中对于所述多个感应节点的每一个而言，当在所述感应节点所因所述伪手指电路耦接而产生出所述感应电容时，所述运算放大器的所述反相输入端便耦接至所述感应节点所对应的所述感应线，并且所述运算放大器的所述输出端则用以输出有关所述感应节点所因所述伪手指电路耦接而产生的所述感测值；以及an operational amplifier having an inverting input terminal, a non-inverting input terminal and an output terminal, the non-inverting input terminal of the operational amplifier is coupled to a reference voltage, wherein for the plurality of sensing nodes In each case, when the sensing capacitance is generated at the sensing node due to the coupling of the pseudo-finger circuit, the inverting input terminal of the operational amplifier is coupled to the corresponding sensing node the sensing line, and the output terminal of the operational amplifier is used to output the sensing value related to the sensing node due to the coupling of the pseudo-finger circuit; and一负反馈电路，耦接至所述运算放大器的所述反相输入端及所述输出端间，其中所述负反馈电路经由相互并联的一第三电容器及一电阻器所组成。A negative feedback circuit is coupled between the inverting input terminal and the output terminal of the operational amplifier, wherein the negative feedback circuit is formed by a third capacitor and a resistor connected in parallel with each other.10.一种触控面板，其特征在于，所述触控面板包括：10. A touch panel, wherein the touch panel comprises:一触控传感器，包括沿着一第一方向排列的多条感应线，以及沿着一第二方向排列的多条驱动线，其中所述第一方向与所述第二方向彼此相互垂直，且所述多条感应线与所述多条驱动线交错构成出多个感应节点；以及A touch sensor includes a plurality of sensing lines arranged along a first direction, and a plurality of driving lines arranged along a second direction, wherein the first direction and the second direction are perpendicular to each other, and The plurality of sensing lines and the plurality of driving lines are interleaved to form a plurality of sensing nodes; and一触控控制器，电性连接于所述触控传感器的所述多条感应线及所述多条驱动线，并且用以传递一驱动信号至所述多条驱动线，再从所述多条感应线接收得到有关所述多个感应节点的每一个的一感应电容；a touch controller, electrically connected to the plurality of sensing lines and the plurality of driving lines of the touch sensor, and used for transmitting a driving signal to the plurality of driving lines, and then from the plurality of driving lines a sensing line receives a sensing capacitance for each of the plurality of sensing nodes;其中，所述触控控制器还通过利用至少一默认电路而来获得到有关所述多个感应节点的每一个的一电容变化量，所述默认电路包含已知的至少一电容器，并且是在与所述多个感应节点的每一个耦接时能够让所述感应节点产生所述感应电容，使得所述触控控制器再根据所述感应电容得到所述电容变化量，并且根据所述多个感应节点的每一个的所述电容变化量以及所述默认电路，来获得到相应于所述多个感应节点的每一个的一增益系数；以及Wherein, the touch controller also obtains a capacitance variation about each of the plurality of sensing nodes by using at least one default circuit, the default circuit includes at least one known capacitor, and is in the When being coupled to each of the plurality of sensing nodes, the sensing node can generate the sensing capacitance, so that the touch controller obtains the capacitance change according to the sensing capacitance, and the capacitance variation of each of the plurality of sensing nodes and the default circuit to obtain a gain factor corresponding to each of the plurality of sensing nodes; and对于所述多个感应节点的每一个而言，当在所述感应节点所因一外部物体碰触而产生出所述感应电容时，所述触控控制器则利用所述感应节点的所述增益系数来对所述感应节点所因所述外部物体碰触而产生的所述感应电容进行补偿；For each of the plurality of sensing nodes, when the sensing capacitance is generated at the sensing node due to the touch of an external object, the touch controller utilizes the a gain coefficient to compensate the sensing capacitance generated by the sensing node due to the touch of the external object;其中所述默认电路为一伪手指电路，包括：The default circuit is a pseudo-finger circuit, including:一第一电容器，具有一第一端及一第二端，其中所述第一电容器的所述第一端则按序耦接至所述多条驱动线的其中之一；a first capacitor having a first end and a second end, wherein the first end of the first capacitor is sequentially coupled to one of the plurality of driving lines;一第二电容器，具有一第一端及一第二端，其中所述第二电容器的所述第一端耦接至所述第一电容器的所述第二端，且所述第二电容器的所述第二端则按序耦接至所述多条感应线的其中之一；以及a second capacitor having a first end and a second end, wherein the first end of the second capacitor is coupled to the second end of the first capacitor, and the second end of the second capacitor is the second end is sequentially coupled to one of the plurality of sensing lines; and一电子组件，其中所述电子组件的一第一端耦接至所述第一电容器的所述第二端及所述第二电容器的所述第一端间，且所述电子组件的一第二端则耦接至一接地电压，其中所述电子组件由至少一被动组件所组成。An electronic component, wherein a first end of the electronic component is coupled between the second end of the first capacitor and the first end of the second capacitor, and a first end of the electronic component The two terminals are coupled to a ground voltage, wherein the electronic component is composed of at least one passive component.11.如权利要求10所述的触控面板，其特征在于，其中所述伪手指电路则按序耦接至所述多个感应节点的每一个的所述驱动线及所述感应线之间，并且用以来使得所述触控控制器获得到有关所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容。11 . The touch panel of claim 10 , wherein the pseudo-finger circuit is sequentially coupled between the driving line and the sensing line of each of the plurality of sensing nodes. 12 . , and is used to enable the touch controller to obtain the sensing capacitance generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit.12.如权利要求11所述的触控面板，其特征在于，其中所述触控控制器执行以下步骤以通过利用所述默认电路而来获得到有关所述多个感应节点的每一个的所述电容变化量：12 . The touch panel of claim 11 , wherein the touch controller performs the following steps to obtain all information about each of the plurality of sensing nodes by using the default circuit. 13 . Said capacitance change:对于所述多个感应节点的每一个而言，当在所述伪手指电路耦接至所述感应节点的所述驱动线及所述感应线之间时，所述触控控制器则用以传递所述驱动信号至所述感应节点的所述驱动线，以驱动所述感应节点的所述感应线产生出所述感应节点所因所述伪手指电路耦接而产生的所述感应电容；以及For each of the plurality of sense nodes, when the pseudo-finger circuit is coupled between the drive line and the sense line of the sense node, the touch controller is used to transmitting the driving signal to the driving line of the sensing node, so as to drive the sensing line of the sensing node to generate the sensing capacitance generated by the sensing node due to the coupling of the pseudo-finger circuit; as well as根据比较所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，以及所述多个感应节点的每一个所未因所述外部物体碰触前就已存在的一基本电容间的比值，来获得到有关所述多个感应节点的每一个的所述电容变化量。According to comparing the sensing capacitance generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit, and each of the plurality of sensing nodes before being touched by the external object There is a ratio between basic capacitances to obtain the amount of capacitance change with respect to each of the plurality of sensing nodes.13.如权利要求12所述的触控面板，其特征在于，其中所述触控控制器还根据所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，来获得到有关所述多个感应节点的每一个的一感测值，并且根据所述多个感应节点的所述感测值，来调整所述触控控制器中的至少一感测阈值，其中所述感测阈值是用来判断所述触控传感器是否有被碰触。13 . The touch panel of claim 12 , wherein the touch controller is further based on the sensing generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit. 14 . capacitance to obtain a sensing value about each of the plurality of sensing nodes, and adjust at least one sensing in the touch controller according to the sensing value of the plurality of sensing nodes a threshold, wherein the sensing threshold is used to determine whether the touch sensor is touched.14.如权利要求13所述的触控面板，其特征在于，其中所述触控控制器执行以下步骤以根据所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，来获得到有关所述多个感应节点的每一个的所述感测值：14 . The touch panel of claim 13 , wherein the touch controller executes the following steps according to the generation of each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit. 15 . the sensing capacitance to obtain the sensing value about each of the plurality of sensing nodes:利用至少一转换器，接收自所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感应电容，并借以输出有关所述多个感应节点的每一个的所述感测值。Utilizing at least one converter to receive the sensing capacitance generated by the coupling of the pseudo-finger circuit from each of the plurality of sensing nodes, and thereby output the sensing capacitance associated with each of the plurality of sensing nodes sensed value.15.如权利要求14所述的触控面板，其特征在于，其中所述触控控制器执行以下步骤以根据所述多个感应节点的所述感测值，来调整所述触控控制器中的所述至少一感测阈值：15 . The touch panel of claim 14 , wherein the touch controller performs the following steps to adjust the touch controller according to the sensing values of the plurality of sensing nodes. 16 . The at least one sensing threshold in:利用至少一模拟数字转换器，来对输出自所述转换器的所述多个感应节点的每一个所因所述伪手指电路耦接而产生的所述感测值进行转换，借以产生有关所述多个感应节点的每一个所因所述伪手指电路耦接而产生的一数字电压信号；以及At least one analog-to-digital converter is used to convert the sensed value generated by each of the plurality of sense nodes output from the converter due to the coupling of the pseudo-finger circuit, thereby generating information about the a digital voltage signal generated by each of the plurality of sensing nodes due to the coupling of the pseudo-finger circuit; and利用一数字信号处理器，根据所述多个感应节点的所述数字电压信号，来调整所述触控控制器中的所述感测阈值。Using a digital signal processor, the sensing threshold in the touch controller is adjusted according to the digital voltage signals of the plurality of sensing nodes.16.如权利要求14所述的触控面板，其特征在于，其中所述转换器为一电容电压转换器，且其包括：16. The touch panel of claim 14, wherein the converter is a capacitance-to-voltage converter, comprising:一运算放大器，具有一反相输入端、一非反相输入端及一输出端，所述运算放大器的所述非反相输入端耦接至一参考电压，其中对于所述多个感应节点的每一个而言，当在所述感应节点所因所述伪手指电路耦接而产生出所述感应电容时，所述运算放大器的所述反相输入端便耦接至所述感应节点所对应的所述感应线，并且所述运算放大器的所述输出端则用以输出有关所述感应节点所因所述伪手指电路耦接而产生的所述感测值；以及an operational amplifier having an inverting input terminal, a non-inverting input terminal and an output terminal, the non-inverting input terminal of the operational amplifier is coupled to a reference voltage, wherein for the plurality of sensing nodes In each case, when the sensing capacitance is generated at the sensing node due to the coupling of the pseudo-finger circuit, the inverting input terminal of the operational amplifier is coupled to the corresponding sensing node the sensing line, and the output terminal of the operational amplifier is used to output the sensing value related to the sensing node due to the coupling of the pseudo-finger circuit; and一负反馈电路，耦接至所述运算放大器的所述反相输入端及所述输出端间，其中所述负反馈电路经由相互并联的一第三电容器及一电阻器所组成。A negative feedback circuit is coupled between the inverting input terminal and the output terminal of the operational amplifier, wherein the negative feedback circuit is formed by a third capacitor and a resistor connected in parallel with each other.

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