CN203606817U - System for achieving capacitance detection and electromagnetic detection - Google Patents

Abstract

The utility model relates to the field of touch control, and discloses a system for realizing capacitance detection and electromagnetic detection. In the utility model, the horizontal and vertical rows of wires contained in the sensing antenna multiplexing array are located in the touch area of the touch screen panel, the capacitor and the electromagnetic touch chip have a TX terminal, an RX terminal and an EM Detect terminal, and one terminal of these three terminals is multiplexed. One chip pin, the other end is connected to one end of the horizontal and vertical wires. When the system performs capacitive touch detection, all the switches in the switch array are disconnected, and the horizontal and vertical wires form the sensor of the capacitive screen; when the system performs electromagnetic touch detection, all switches are closed. state, the horizontal and vertical wires form the antenna loop of the electromagnetic screen; when the switch is partially disconnected and partially closed, some horizontal and vertical wires form the sensor of the capacitive screen, and some horizontal and vertical wires form the antenna loop of the electromagnetic screen. Compared with the prior art, the utility model realizes time-division multiplexing of capacitance detection and electromagnetic detection by using only one group of sensing antenna multiplexing arrays on a single chip.

Description

A system that realizes capacitance detection and electromagnetic detection

technical field

The utility model relates to the field of touch technology, in particular to a system for realizing capacitance detection and electromagnetic detection.

Background technique

As a special computer peripheral, the touch screen can provide a human-computer interaction interface between the electronic system and the user, and has been widely used in many fields, for example, in mobile phones, personal digital assistants (Personal Digital Assistant, PDA), Game consoles, liquid crystal displays (Liquid Crystal Display, LCD), plasma displays (Plasma Display Panel, PDP), etc.

At present, touch screens mainly fall into the following categories: electromagnetic touch screens, capacitive touch screens, electrical touch screens, and infrared touch screens.

Among them, the capacitive touch screen generally adopts a front-attached type, and a capacitive touch driving electrode and a capacitive touch sensing electrode of a transparent conductive material (such as an indium tin oxide material) are arranged inside, and the capacitive touch driving electrode and the capacitive touch The sensing electrodes are insulated from each other. When touching the screen, due to the electric field in the human body, a coupling capacitance is formed between the finger and the capacitive touch driving electrode and capacitive touch sensing electrode in the touch screen; due to the capacitance change of the touch point, the The induced current flowing to the touch point appears in the capacitive touch driving electrode and the capacitive touch sensing electrode, and the position of the touch point can be accurately calculated through correlation calculation.

At present, electromagnetic touch screens generally use a back-attached electromagnetic antenna board. This antenna board is composed of horizontal and vertical metal wires. When the electromagnetic pen slides on the screen, an induced electromotive force is generated. The closer to the position of the electromagnetic pen, the The stronger the induced electromotive force at the position, the position of the electromagnetic pen can be accurately calculated through relevant calculations. Since the metal wire is non-transparent, it can only be attached to the rear side of the Liquid Crystal Display Module (LCM).

At present, in order to realize the dual touch of hand and pen, the capacitive touch mode and the electromagnetic touch mode are superimposed and used together to realize the touch mode combining handwriting and pen writing. The touch area of the capacitive touch mode It needs to be set on the touch area of the electromagnetic touch mode, that is to say, two mutually independent array structures need to be set on the same touch device and superimposed on each other, so that the position of the two modes can be realized. However, each array circuit needs to be connected to its own processing circuit, which makes the whole touch product complex in structure, large in size, high in production cost, and in the process of using the touch product, there will be capacitive touch control mode and electromagnetic touch mode; in addition, the capacitive touch drive electrodes and capacitive touch sensing electrodes are fabricated on one chip, and the electromagnetic antenna board is fabricated on another chip, resulting in a thicker finished product, which does not meet current requirements. Market demand, and the cost is high.

Utility model content

The purpose of the utility model is to provide a system for realizing capacitance detection and electromagnetic detection, which makes touch products thinner, simpler in structure, lower in cost, and capable of realizing capacitance detection and electromagnetic detection at the same time.

In order to solve the above technical problems, the first embodiment of the utility model provides a system for realizing capacitance detection and electromagnetic detection, which is characterized in that it includes: a touch screen panel, a capacitance and electromagnetic touch chip, and a sensing antenna multiplexing array ;

The sensing antenna multiplexing array is located in the touch area of the touch screen panel, and includes a switch array, horizontal wires and vertical wires;

The switch array includes a plurality of electronic switches;

Every two horizontal wires or vertical wires are connected through one electronic switch;

The capacitance and electromagnetic touch chip has a capacitance detection transmitting terminal TX, a capacitance detection receiving terminal RX and an electromagnetic detection terminal EM Detect; one end of the TX, RX and EM Detect multiplexes a lead of the capacitance and electromagnetic touch chip feet, and the other end is respectively connected to one end of the horizontal wire or the vertical wire;

When all the electronic switches of the switch array are in the off state, each of the horizontal wires and the vertical wires exists independently to form a sensor, and the capacitance and the electromagnetic touch chip pass through the TX sends a drive signal to the sensor, and receives an induction signal through the RX to detect the capacitance of the touch point;

When all the electronic switches of the switch array are in the closed state, two of the horizontal wires or vertical wires are connected to form an antenna loop, and the capacitor and the electromagnetic touch chip receive the antenna through the EM Detect The induction signal on the circuit is used for electromagnetic detection of the touch point.

When some of the electronic switches of the switching switch array are in the off state and the rest of the electronic switches are in the closed state, the horizontal or vertical wires connected to the electronic switches in the off state exist independently, and the individual The existing horizontal wires or vertical wires form a sensor; the horizontal wires or vertical wires connected to the closed electronic switch are connected in pairs to form an antenna loop.

Compared with the prior art, the capacitive and electromagnetic touch chip in the utility model is a single chip, and the capacitive detection and electromagnetic detection are realized on a single chip, which makes the touch product lighter and thinner, and greatly reduces the cost of the product; The antenna multiplexing array and the switching switch array are used in conjunction with each other, so that the utility model only needs to use a set of horizontal wires and vertical wires, that is, capacitance detection can be performed separately, electromagnetic detection can be performed separately, and capacitance detection and electromagnetic detection can also be performed separately. The detection is carried out at the same time, which simplifies the structure of the touch product, and realizes the time-division multiplexing of the capacitive touch sensor and the electromagnetic touch antenna through the sensing antenna multiplexing array (that is, when the sensing antenna multiplexing array is used as a sensor, the capacitance detection , when the sensing antenna multiplexed array is used as an antenna to perform electromagnetic detection), it effectively avoids the problem of mutual interference between the capacitive touch mode and the electromagnetic touch mode in the prior art; in addition, the capacitance in the utility model And the electromagnetic touch chip has TX, RX and EM Detect, which ensures the transmission and reception of touch point capacitive signals and the detection of electromagnetic signals.

In addition, each pin connected to the horizontal or vertical wires of the capacitance and the electromagnetic touch chip in the utility model is connected to a TX, an RX and an EM Detect through a switch element, and through the switch element Control the connection and disconnection of the pin with the TX, RX and EM Detect;

When the switch element controls the pin to be connected to the TX or the RX and disconnected from the EM Detect, the capacitor and the electromagnetic touch chip perform capacitive touch detection;

When the switch element controls the pin to be disconnected from the TX and the RX and connected to the EM Detect, the capacitor and the electromagnetic touch chip perform electromagnetic touch detection.

Since each pin of the capacitive and electromagnetic touch chip connected to the horizontal wire or the vertical wire is connected to a TX, an RX and an EM Detect through a switch element, the sensing antenna multiplexing array can be effectively realized The time-division multiplexing of the capacitive sensor and the electromagnetic antenna ensures the realization of the whole technical points in the utility model.

In addition, the capacitive and electromagnetic touch chip also includes a sensing control element for generating a control signal for controlling the switch array;

When the capacitor and the electromagnetic touch chip perform electromagnetic touch detection, the capacitor and the electromagnetic touch chip sequentially scan the antenna loop formed by connecting two horizontal wires or two vertical wires, and read the The induction signal on the antenna;

During each scan, the sensor control element generates a control signal and sends it to the switching switch array according to the capacitance and the information of the horizontal or vertical wires to be connected specified by the electromagnetic touch chip; The switch array connects the specified horizontal wires or vertical wires according to the received control signal;

Wherein, the specified horizontal wires or vertical wires include two or more groups of horizontal wires or vertical wires.

It is precisely because of the existence of the above-mentioned sensing control elements that the switch array can receive the control signals sent by the capacitor and the electromagnetic touch chip, and effectively control the connection and disconnection of the specified horizontal or vertical wires to achieve the ultimate Capacitive touch detection or electromagnetic touch detection.

In addition, the horizontal wires and the vertical wires are respectively located on two different planes.

Horizontal wires and vertical wires are located on different planes, so that any two wires in the horizontal wires and vertical wires are insulated from each other to prevent short circuits, which is the prerequisite for accurate capacitive touch detection and electromagnetic touch detection.

In addition, the switching switch array includes a connecting wire and several electronic switches, wherein the number of electronic switches is consistent with the total number of horizontal wires and vertical wires.

When the capacitor and the electromagnetic touch chip are used as the electromagnetic touch detection system, when the switching switch array includes a connecting wire and several electronic switches, the electromagnetic touch detection mode can scan the connection between two wires in the horizontal wire and the vertical wire. The antenna loop formed.

As a further improvement of the utility model, the switch array includes several electronic switches, wherein the number of electronic switches is consistent with the total number of horizontal and vertical wires, and the electronic switches are multi-contact switches.

When the capacitor and the electromagnetic touch chip are used as the electromagnetic touch detection system, when the switching switch array contains several connecting wires and several electronic switches, the electromagnetic touch detection mode can scan the horizontal wires and the vertical wires to connect multiple groups of wires to form antenna loop.

In addition, when the capacitive touch detection is a mutual capacitance touch detection, the TX and the RX are respectively connected to the horizontal wires or the vertical wires.

Capacitance is formed where the horizontal wires and vertical wires intersect. When detecting the mutual capacitance, the TX connected to the horizontal wires sends out transmission signals in sequence, and the RX connected to the vertical wires receives signals at the same time, so that all horizontal wires can be obtained. The capacitance value of the intersection point of the row wire and the vertical wire, that is, the capacitance of the two-dimensional plane of the entire touch screen, can calculate the coordinates of each touch point according to the two-dimensional capacitance change data of the touch screen. Therefore, even if there are Multiple touch points can also calculate the real coordinates of each touch point.

In addition, when the capacitive touch detection is self-capacitive touch detection, the TX is suspended, and the RX is connected to the horizontal wire or the vertical wire.

These horizontal wires and vertical wires respectively form a capacitance with the ground, and this capacitance is the so-called self-capacitance, that is, the capacitance of the electrode to the ground. When the finger touches the capacitive screen, the capacitance of the finger will be superimposed on the capacitance of the screen body, so that the capacitance of the screen body will increase, and then according to the change of capacitance before and after the touch, the horizontal and vertical coordinates are determined respectively, and then combined into a flat touch coordinate .

Description of drawings

Fig. 1 is a schematic diagram of a sensing antenna multiplexing array in a system for realizing capacitance detection and electromagnetic detection according to the first embodiment of the present invention;

Fig. 2 is a schematic diagram of pins in a system for realizing capacitance detection and electromagnetic detection according to the first embodiment of the present invention;

3 is a schematic diagram of a switch array including a connecting line in a system for realizing capacitance detection and electromagnetic detection according to the first embodiment of the present invention;

Fig. 4 is a schematic diagram of a switch array including several connecting wires in the system for realizing capacitance detection and electromagnetic detection according to the second embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, various implementation modes of the present utility model will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present utility model, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

The first embodiment of the utility model relates to a system for realizing capacitance detection and electromagnetic detection. It includes touch screen panel, capacitive and electromagnetic touch chip, sensor antenna multiplexing array (wire array with both sensor and antenna functions), switch array.

As shown in Figure 1, the sensing antenna multiplexing array is located in the touch area 1 of the touch screen panel, including horizontal wires (represented by X ₁ to X _N ) and vertical wires (represented by Y ₁ to Y _M ), the capacitance and electromagnetic touch chip has a capacitance detection transmitter TX, a capacitance detection receiver RX and an electromagnetic detection terminal EM Detect, TX, RX and EM Detect are respectively connected to one end of the horizontal wire or the vertical wire (in this embodiment I will use horizontal wires to connect to TX, and vertical wires to connect to RX as an example to illustrate). Among them, the horizontal wires and the vertical wires are respectively located in two different planes (the intersection of the horizontal wires and the vertical wires in Fig. The wires will all be insulated from each other to prevent short circuits, which is a prerequisite for accurate capacitive touch detection or electromagnetic touch detection.

In addition, each pin of the capacitor and the electromagnetic touch chip in this embodiment is connected to a TX, an RX and an EM Detect through the switch element 3, and the other end of each TX, RX and EM Detect is connected to the other end of each TX, RX and EM Detect respectively One end of the horizontal or vertical wires is connected, and the connection and disconnection of the pins with TX, RX and EM Detect are controlled by the switch element 3 to determine whether the entire system receives capacitance detection information or electromagnetic detection information or simultaneously receives capacitance detection information and electromagnetic detection information. as shown in picture 2.

When the control pin of switch element 3 is connected to TX or RX and disconnected from EM Detect, the capacitive and electromagnetic touch chip will perform capacitive touch detection;

When the control pin of the switch element 3 is disconnected from TX and RX and connected to EM Detect, the capacitor and the electromagnetic touch chip perform electromagnetic touch detection.

When the switch element 3 simultaneously controls the pins to be connected to TX, RX and EM Detect, the capacitive and electromagnetic touch chips can simultaneously perform capacitive touch detection and electromagnetic touch detection.

In the prior art, each pin connected to horizontal wires or vertical wires is only connected to one TX and one RX, so that only the capacitive touch detection function can be realized, but in this embodiment, each pin connected to horizontal wires Or the pins connected by the vertical wires are connected to one TX and one RX, and an EM Detect is added, and the connection or disconnection of them to the pins can be controlled through the switching element 3, so as to realize the connection between the capacitive sensor and the electromagnetic antenna Time-division multiplexing ensures the realization of the whole technical point in the utility model.

In this embodiment, the capacitor and the electromagnetic touch chip also include a sensor control element. When the capacitor and the electromagnetic touch chip perform capacitive touch detection, as shown in FIG. The control signal makes all the switches 5 of the switch array 4 in the off state, and the horizontal and vertical wires constitute the capacitive touch sensor, each of which is used separately, and the capacitive and electromagnetic touch chips communicate with the capacitive touch sensor through TX. The sensor sends the drive signal and receives the induction signal through RX to detect the touch point. That is to say, in order to achieve the multiplexing of electromagnetic touch and capacitive touch, the touch screen panel is covered with sensors/antennas horizontally and vertically, and the horizontal wires and vertical wires are not on the same plane. When the panel is used as a capacitive screen, each wire on the touch screen panel is independent and does not form a loop. The position where the horizontal and vertical wires intersect forms a mutual inductance capacitance. When a human finger slides on the capacitive touch panel, the capacitance values at different positions are different. Capacitive touch detection judges the position of the human finger based on the change of the capacitance value of each point.

The capacitive touch detection in this embodiment has two methods: mutual capacitance touch detection and self-capacitance touch detection:

When the capacitive touch detection is a mutual capacitance touch detection, TX and RX are respectively connected to the horizontal wires and vertical wires, forming capacitance at the intersection of the horizontal wires and vertical wires, and when detecting the mutual capacitance, they are connected to the horizontal wires The connected TXs send transmission signals in sequence, and the RXs connected to the vertical wires receive signals at the same time, so that the capacitance value of the intersection point of all horizontal wires and vertical wires can be obtained, that is, the capacitance of the two-dimensional plane of the entire touch screen, according to The coordinates of each touch point can be calculated from the two-dimensional capacitance change data of the touch screen. Therefore, even if there are multiple touch points on the screen, the real coordinates of each touch point can be calculated.

When the capacitive touch detection is self-capacitive touch detection, TX is suspended, and RX is connected to the horizontal or vertical wires. These horizontal and vertical wires respectively form capacitance with the ground. This capacitance is commonly called self-capacitance, also is the capacitance of the electrode to ground. When the finger touches the capacitive screen, the capacitance of the finger will be superimposed on the capacitance of the screen body, so that the capacitance of the screen body will increase, and then according to the change of capacitance before and after the touch, the horizontal and vertical coordinates are determined respectively, and then combined into a flat touch coordinate .

In this embodiment, the switching switch array 4 includes a connecting wire and several electronic switches 5, as shown in FIG. 3 , wherein the number of electronic switches 5 is consistent with the total number of horizontal and vertical wires. When the capacitor and the electromagnetic touch chip perform electromagnetic touch detection, the sensor control element receives the control signal sent by the capacitor and the electromagnetic touch chip to make all the electronic switches 5 of the switching switch array 4 in the closed state, and the horizontal or vertical wires One end of a certain two wires is connected to form an antenna loop, and the capacitor and the electromagnetic touch chip receive the induction signal on the antenna loop through EM Detect to detect the touch point. That is to say, in order to receive the signal emitted by the electromagnetic pen, it is necessary to connect two parallel horizontal antennas or vertical parallel antennas to form a coil loop. When the magnetic field where the coil is located changes, an induction signal will be generated on the coil. As the writing position of the electromagnetic pen changes, the magnetic field generated by the electromagnetic wave signal sent by the electromagnetic pen also changes accordingly, so that the induction signals generated on each coil also change. Electromagnetic touch detection is to judge the writing position of the electromagnetic pen according to the change of the induction signal of each coil.

Capacitance and electromagnetic touch chip sequentially scan the antenna loop formed by connecting two horizontal wires or two vertical wires, and read the induction signal on the antenna forming the loop. The information of the horizontal wires or vertical wires to be connected specified by the touch chip generates a control signal and sends it to the switch array 4, and the switch array 4 specifies two horizontal wires or vertical wires according to the received control signal. Wires are connected.

It is precisely because of the existence of the above-mentioned sensing control elements that the switching switch array 4 can receive the control signals sent by the capacitor and the electromagnetic touch chip, and effectively control the connection and disconnection of the specified horizontal or vertical wires to realize Ultimate capacitive touch detection or electromagnetic touch detection.

The system of capacitive detection and electromagnetic detection in this embodiment can perform capacitive touch detection or electromagnetic touch detection independently, or can perform capacitive touch detection and electromagnetic touch detection simultaneously.

When the touch screen panel is subjected to electromagnetic touch, the sensing control element controls the switching switch array 4 to connect the specified horizontal wires and vertical wires to form an electromagnetic antenna loop through the control signal sent by the capacitor and the electromagnetic touch chip. The electromagnetic touch detection mode works, and the capacitive touch detection mode does not work;

When the touch screen panel is capacitively touched, the sensor control element controls the switching switch array 4 to be disconnected through the control signal sent by the capacitor and the electromagnetic touch chip, and the horizontal and vertical wires form a capacitive sensor. At this time, the capacitive touch detection mode works, electromagnetic touch detection mode does not work.

When the touch panel is subjected to capacitive touch and electromagnetic touch at the same time, the switch element 3 simultaneously controls the pins to communicate with TX, RX and EM Detect, and the sensing control element controls the switching switch array 4 through the control signal sent by the capacitor and the electromagnetic touch chip Connect some horizontal wires and vertical wires to form an electromagnetic antenna loop, and connect another part of horizontal wires to vertical wires to form a capacitive sensor. At this time, the capacitive touch detection mode and the electromagnetic touch detection mode work simultaneously.

Both the capacitive touch detection function and the electromagnetic touch detection function can be used alone or at the same time without interfering with each other, making the whole system more comprehensive, more humanized, and more practical.

Compared with the prior art, the capacitance detection and electromagnetic detection system in the utility model is made on a single chip, and the capacitance detection and electromagnetic detection are realized on a single chip, which reduces the overall thickness of the touch screen and makes touch products It is lighter and thinner, which greatly reduces the cost of the product; the sensing antenna multiplexing array and the switching switch array 4 are used in conjunction with each other, so that the utility model only needs to use a set of horizontal wires and vertical wires, that is, capacitance detection can be performed separately, Electromagnetic detection can be carried out separately, and capacitance detection and electromagnetic detection can be carried out at the same time, which simplifies the structure of touch products, and realizes the time-division multiplexing of sensors and antennas through the sensing antenna multiplexing array (that is, the sensing antenna multiplexing array is used as Capacitive detection is performed when the sensor is used, and electromagnetic detection is performed when the sensing antenna multiplexing array is used as an antenna), which effectively avoids the mutual interference between the capacitive touch mode and the electromagnetic touch mode in the prior art; in addition , the capacitor and the electromagnetic touch chip in the utility model have a transmitting terminal TX, a receiving terminal RX and an electromagnetic detection terminal EM Detect, which ensures the transmission and reception of the touch point capacitance signal and the detection of the electromagnetic signal.

The second embodiment of the utility model relates to a system for realizing capacitance detection and electromagnetic detection. The second embodiment is roughly the same as the first embodiment, the main difference is that: in the first embodiment, the switching switch array 4 includes a connecting wire and several electronic switches 5, when the capacitor and the electromagnetic touch chip perform electromagnetic During touch detection, the switching switch array 4 connects one end of a certain two wires in the horizontal or vertical wires to form an antenna loop, and the capacitor and the electromagnetic touch chip receive the induction signal on the antenna loop to detect the touch point. detection. In the second embodiment of the present utility model, the switch array 4 includes several connecting wires and several electronic switches 5. When the capacitance and the electromagnetic touch chip perform electromagnetic touch detection, the switch array 4 connects the horizontal wires or the vertical wires. One end of two or more groups of wires in the row wires is connected to form a number of antenna loops, and the capacitor and the electromagnetic touch chip detect the touch point by receiving the induction signals on these antenna loops.

Specifically, the switch array 4 includes several wires and several electronic switches 5, wherein the number of electronic switches 5 is consistent with the total number of horizontal and vertical wires, and the electronic switches 5 are multi-contact switches. As shown in Figure 4, when the capacitor and the electromagnetic touch chip are used as the electromagnetic touch detection system, the capacitor and the electromagnetic touch chip sequentially scan the antenna loop formed by connecting multiple sets of horizontal or vertical wires, and read the antenna that forms the loop. In each scan, the sensing control element generates a control signal according to the capacitance and the information of the horizontal or vertical wires to be connected specified by the electromagnetic touch chip and sends it to the switch array 4, the switch array 4. According to the received control signal, connect the specified horizontal wires or vertical wires to form an antenna array, and the main chip of the electromagnetic screen reads the induction signal on each antenna loop in turn.

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific examples for realizing the utility model, and in practical applications, various changes can be made to it in form and details without departing from the utility model spirit and scope.

Claims (8)

1. a system that realizes capacitance detecting and electromagnetic detection, is characterized in that, comprises: touch screen panel, electric capacity and electromagnetism touch-control chip, the antenna multiplexed array of sensing;

The antenna multiplexed array of described sensing is positioned at the touch area of described touch screen panel, comprises change-over switch array, horizontally-arranged wire and vertical setting of types wire;

Described change-over switch array comprises some electronic switches;

Every two described horizontally-arranged wires or vertical setting of types wire are connected by a described electronic switch;

Described electric capacity and electromagnetism touch-control chip have capacitance detecting transmitting terminal TX, capacitance detecting receiving end RX and electromagnetic surveying end EM Detect; The multiplexing described electric capacity in one end of described TX, RX and EM Detect and the pin of electromagnetism touch-control chip, the other end is connected with one end of described horizontally-arranged wire or described vertical setting of types wire respectively;

When all electronic switches of described change-over switch array are during in off-state, all individualisms of each root in described horizontally-arranged wire and described vertical setting of types wire, form sensor, described electric capacity and electromagnetism touch-control chip are sent and drive signal to described sensor by described TX, and receive induced signal by described RX, carry out the capacitance detecting of touch point;

When whole electronic switches of described change-over switch array are during in closure state, in described horizontally-arranged wire or vertical setting of types wire, connect between two, form antenna loop, described electric capacity and electromagnetism touch-control chip receive the induced signal on described antenna loop by described EM Detect, carry out the electromagnetic detection of touch point

When the portions of electronics switch of described change-over switch array is in off-state, all the other electronic switches during in closure state, with the described described horizontally-arranged wire being connected in the electronic switch of off-state or vertical setting of types wire individualism, the horizontally-arranged wire of described individualism or vertical setting of types wire form sensor; Be connected between two with the described described horizontally-arranged wire being connected in the electronic switch of closure state or vertical setting of types wire, form antenna loop.

2. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, it is characterized in that, each pin being connected with horizontally-arranged wire or vertical setting of types wire of described electric capacity and electromagnetism touch-control chip is connected with an EM Detect with a TX, a RX by on-off element, and being communicated with and disconnection by pin described in described on-off element control and described TX, RX and EM Detect;

When pin described in described on-off element control is communicated with described TX or described RX, while disconnection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out capacitance touch detection;

When pin described in described on-off element control and described TX and described RX disconnection, while connection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch detection.

3. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described electric capacity and electromagnetism touch-control chip also comprise sensing control element, for generation of the control signal of controlling described change-over switch array;

When described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, described electric capacity and electromagnetism touch-control chip scan successively two horizontally-arranged wires or two vertical setting of types wires and couple together the antenna loop forming, and read the induced signal on the antenna in described formation loop;

While scanning each time, the horizontally-arranged wire that the wish that described sensing control element is specified with electromagnetism touch-control chip according to described electric capacity is connected or the information of vertical setting of types wire, produce control signal and send to described change-over switch array; Described change-over switch array, according to the control signal receiving, couples together the horizontally-arranged wire of described appointment or vertical setting of types wire;

Wherein, the horizontally-arranged wire of described appointment or vertical setting of types wire comprise in horizontally-arranged wire or vertical setting of types wire between two or many groups.

4. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described horizontally-arranged wire and vertical setting of types wire lay respectively at two different planes.

5. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described change-over switch array comprises a connecting line and several electronic switches, and wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire.

6. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, it is characterized in that, described change-over switch array comprises some connecting lines and several electronic switches, wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire, and electronic switch is multicontact switch.

7. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, in the time that described capacitance touch detects as mutual capacitance touch detection, described TX is connected with described horizontally-arranged wire or described vertical setting of types wire respectively with described RX.

8. the system that realizes capacitance detecting and electromagnetic detection according to claim 6, is characterized in that, in the time that described capacitance touch detects as self-capacitance touch detection, described TX is unsettled, and described RX is connected with described horizontally-arranged wire or described vertical setting of types wire.

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