CN108604146B

CN108604146B - Touch device and method for determining capacitance induction quantity of touch device

Info

Publication number: CN108604146B
Application number: CN201780000147.2A
Authority: CN
Inventors: 杨威
Original assignee: Shenzhen Goodix Technology Co Ltd
Current assignee: Shenzhen Goodix Technology Co Ltd
Priority date: 2017-01-05
Filing date: 2017-01-05
Publication date: 2021-07-16
Anticipated expiration: 2037-01-05
Also published as: CN108604146A; WO2018126368A1

Abstract

A touch device and a method for determining a capacitance induction quantity of the touch device are provided. The touch device includes: the touch capacitive sensor (110) comprises M capacitive sensing nodes (111) and is used for detecting first capacitive sensing quantities of the M capacitive sensing nodes (111); a fingerprint sensor (120) embedded in N capacitive sensing nodes of the M capacitive sensing nodes (111), wherein the position occupied by the fingerprint sensor (120) on the touch device does not completely cover the position occupied by any capacitive sensing node (111) of the M capacitive sensing nodes (111); the touch detection and processing circuit (130) is connected to the touch capacitive sensor (110) and the fingerprint recognition sensor (120), and configured to compensate the first capacitance induction amount of the N capacitance induction nodes to generate a second capacitance induction amount according to the first capacitance induction amount of the M capacitance induction nodes (111) detected by the touch capacitive sensor (110), where the second capacitance induction amount is used to determine whether the N capacitance induction nodes are touched.

Description

Touch device and method for determining capacitance induction quantity of touch device

Technical Field

The present application relates to the field of electronic devices, and more particularly, to a touch device and a method of determining a capacitive sensing amount of the touch device.

Background

At present, most electronic equipment can be implanted with a fingerprint identification sensor, and the fingerprint identification sensor can be used for preventing the electronic equipment from being stolen and also can be used for electronic payment. For example, a notebook computer, a fingerprint sensor is typically mounted in the lower right corner of the keyboard main housing. To integrate the design, a fingerprint recognition sensor may be incorporated on the touch device. However, the direct addition of a fingerprint sensor on the touch device may cause a touch blind area to be formed in an area where the fingerprint sensor is installed, and when a touch object operates in the area, defects such as touch failure, line scribing and line breaking or gesture misjudgment may occur.

Disclosure of Invention

The embodiment of the application provides a touch device and a method for determining capacitance induction quantity of the touch device, which can reduce system complexity.

In a first aspect, a touch device is provided. The touch device includes: the touch capacitive sensor comprises M capacitive sensing nodes, wherein M is a positive integer and is more than or equal to 2, and the touch capacitive sensor is used for detecting first capacitive sensing quantities of the M capacitive sensing nodes; the fingerprint identification sensor is embedded in N capacitance sensing nodes in the M capacitance sensing nodes, N is a positive integer and is not less than 1, and the position occupied by the fingerprint identification sensor on the touch device does not completely cover the position occupied by any capacitance sensing node in the M capacitance sensing nodes; the touch detection and processing circuit is connected with the touch capacitive sensor and the fingerprint identification sensor, and is used for compensating the first capacitance induction quantity of the N capacitance induction nodes to generate a second capacitance induction quantity according to the first capacitance induction quantity of the M capacitance induction nodes detected by the touch capacitive sensor, and the second capacitance induction quantity is used for determining whether the N capacitance induction nodes are touched.

This touch device is through the position of overall arrangement fingerprint identification sensor, can only compensate the electric capacity induction volume of the electric capacity induction node that the shared position of fingerprint identification sensor belongs to through the electric capacity induction volume of electric capacity induction node that touch-control capacitance sensor measured out, and then confirm whether touching exists in first electric capacity induction node, compares and uses fingerprint identification sensor to detect electric capacity induction volume compensation electric capacity induction volume, has reduced the complexity, has saved fingerprint identification sensor's consumption.

In some possible implementations, the detection processing circuit includes a touch detection circuit configured to acquire a capacitance sensing amount of the touch capacitive sensor, and a first controller configured to process the capacitance sensing amount acquired by the touch detection circuit.

The detection and processing of the capacitance sensing quantity of the capacitance sensing node measured by the touch circuit can be acquired by the touch detection circuit and processed by the first controller.

In some possible implementations, the detection processing circuit further includes a fingerprint detection circuit, the fingerprint detection circuit is configured to collect a capacitance sensing amount of the fingerprint sensor, and the first controller is further configured to process the capacitance sensing amount of the fingerprint sensor.

The capacitance induction quantity of the fingerprint detection circuit collected by the fingerprint detection circuit can be processed by the same controller as the capacitance induction quantity of the touch capacitive sensor collected by the touch detection circuit, so that the system complexity is reduced.

In some possible implementations, the detection processing circuit further includes a fingerprint detection circuit and a second controller, the fingerprint detection circuit is configured to collect capacitance sensing quantities of the fingerprint sensor, the second controller is configured to process the capacitance sensing quantities of the fingerprint sensor, and the first controller is different from the second controller.

The capacitance induction quantity of the fingerprint detection circuit collected by the fingerprint detection circuit and the capacitance induction quantity of the touch capacitance sensor collected by the touch detection circuit can be processed by different controllers, and the processing efficiency is improved.

In some possible implementations, the upper surfaces of the touch capacitive sensor and the fingerprint recognition sensor are provided with protective layers.

In some possible implementations, the upper surface of the capacitive sensing node is rectangular.

In some possible implementations, the upper surface of the fingerprint recognition sensor is rectangular.

In some possible implementations, the top surfaces of at least two of the M capacitive sensing nodes are connected together.

In some possible implementations, the touch capacitive sensor is specifically configured to detect a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node other than the N capacitance sensing nodes in the M capacitance sensing nodes; the first controller is further configured to determine a second capacitive sense quantity of the first capacitive sense node based on the first capacitive sense quantity of the first capacitive sense node and the first capacitive sense quantity of each capacitive sense node in the set of adjacent capacitive sense nodes.

Detecting a first capacitance induction quantity of a first capacitance induction node and a first capacitance induction quantity of each capacitance induction node in an adjacent capacitance induction node set through a touch capacitance sensor, wherein the first capacitance induction node is any one capacitance induction node in the N capacitance induction nodes, the adjacent capacitance induction node set comprises all second capacitance induction nodes adjacent to the first capacitance induction node, the second capacitance induction nodes are capacitance induction nodes except the N capacitance induction nodes in the M capacitance induction nodes, and a controller determines a second capacitance induction quantity of the first capacitance induction node according to the first capacitance induction quantity of the first capacitance induction node and the first capacitance induction quantity of each capacitance induction node in the adjacent capacitance induction node set, so that the capacitance induction quantity of the capacitance induction node occupied by the fingerprint identification sensor is compensated through the capacitance induction quantities of the capacitance induction nodes around the fingerprint identification sensor, the capacitance induction quantity of each pixel electrode in the fingerprint identification sensor is prevented from being used for compensation, and the system complexity and the power consumption of the fingerprint identification sensor are reduced.

In some possible implementations, the first controller is specifically configured to: determining a compensation coefficient of the first capacitive sensing node according to the first capacitive sensing quantity of the first capacitive sensing node and the first capacitive sensing quantity of each capacitive sensing node in the adjacent capacitive sensing node set; and determining a second capacitance induction quantity of the first capacitance induction node according to the compensation coefficient and the first capacitance induction quantity of the first capacitance induction node.

The compensation coefficient can be used for touching of a touch object used in subsequent measurement, and system power consumption is saved.

In some possible implementations, when a touch object touches the fingerprint identification sensor, the touch capacitive sensor is further configured to detect a third capacitive sensing quantity of the first capacitive sensing node; the first controller is further configured to determine a fourth capacitive sense of the first capacitive sense node based on the compensation factor and the third capacitive sense.

In some possible implementations, the first capacitance sensing amount of the first capacitance sensing node is detected by the touch capacitance sensor when the fingerprint sensor is not touched, and a difference between the second capacitance sensing amount and the fourth capacitance sensing amount is used to determine a barycentric location coordinate of the touch object touching the fingerprint sensor.

The second capacitance induction quantity obtained by the capacitance induction quantity compensation method provided by the embodiment of the application can be used for judging the barycentric position coordinate or the gesture of a touch object touching the fingerprint identification sensor, or other applications and the like, and the application does not limit the barycentric position coordinate or the gesture.

In some possible implementations, the first controller is specifically configured to determine a ratio of an average value of first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as the compensation coefficient of the first capacitance induction node.

In some possible implementations, the first controller is specifically configured to determine the fourth capacitance sensing amount as a product of the compensation coefficient and the third capacitance sensing amount.

In some possible implementations, the first controller is further configured to detect a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in a set of adjacent capacitance sensing nodes, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the set of adjacent capacitance sensing nodes includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node other than the N capacitance sensing nodes in the M capacitance sensing nodes; the first controller is further configured to determine a second capacitance sensing variation of the first capacitance sensing node according to a first capacitance sensing variation of each capacitance sensing node in the adjacent capacitance sensing node set before and after the touch of the touch object and a first capacitance sensing variation of the first capacitance sensing node before and after the touch of the touch object.

The capacitance sensing variation of the capacitance sensing nodes occupied by the fingerprint identification sensor is compensated through the capacitance sensing variation of the capacitance sensing nodes around the fingerprint identification sensor, so that the capacitance sensing variation of each pixel electrode inside the fingerprint identification sensor is prevented from being compensated, and the system complexity and the power consumption of the fingerprint identification sensor are reduced.

In some possible implementations, the first controller is specifically configured to: determining a compensation coefficient of each capacitive sensing node in the adjacent capacitive sensing node set according to a first capacitive sensing variation of each capacitive sensing node before and after touch of a touch object and a first capacitive sensing variation of each capacitive sensing node before and after touch of the touch object; and determining the second capacitance induction variation according to the compensation coefficient and the first capacitance induction variation of the first capacitance induction node before and after the touch of the touch object.

In some possible implementations, the first controller is further configured to determine a third capacitance sensing variation before and after the touch of the first capacitance sensing node; the first controller is further configured to determine a fourth capacitance sense variation of the first capacitance sense node according to the compensation coefficient and the third capacitance sense variation.

In some possible implementations, the fourth capacitance sensing variation is used to determine the barycentric location coordinate of the touch object touching the fingerprint identification sensor.

In some possible implementations, the first controller is specifically configured to: and determining the ratio of the average value of the first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as the compensation coefficient of the first capacitance induction node.

In some possible implementations, the first controller is specifically configured to: and determining the product of the compensation coefficient and the third capacitance sensing variation as the fourth capacitance sensing variation.

In a second aspect, the present application provides a method for determining a capacitive sensing quantity of a touch device. The method is performed by the module of the touch device according to the first aspect or any possible implementation manner of the first aspect.

In a third aspect, a terminal device is provided, which includes the touch device of the first aspect or any one of the possible implementation manners of the first aspect, a display screen, a battery, and a chip.

In a fourth aspect, a touch device is provided, which includes: a processor, a memory and a bus system. The processor and the memory are connected through a bus system, the memory is used for storing instructions, the processor is used for executing the instructions stored by the memory, and the processor is specifically used for executing the method for determining the capacitance induction quantity of the touch device in the above various possible implementation manners.

In a fifth aspect, a computer storage medium is provided, in which program code is stored, and the program code is used for instructing to execute an instruction of a method for determining a capacitive sensing amount of a touch device in the second aspect or any possible implementation manner of the second aspect.

Based on above-mentioned technical scheme, the touch device of this application embodiment, through the position of overall arrangement fingerprint identification sensor, can only measure the electric capacity induction volume compensation fingerprint identification sensor shared position of electric capacity induction node through touch-control capacitive sensor and belong to the electric capacity induction volume of electric capacity induction node, avoids using fingerprint identification sensor to detect electric capacity induction volume compensation electric capacity induction volume, has reduced the complexity, has saved fingerprint identification sensor's consumption.

Drawings

FIG. 1 is a diagram of a touch device according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of sense nodes in a touch capacitive sensor;

fig. 3 is a schematic structural diagram of a touch device according to an embodiment of the present application;

FIGS. 4a, 4b, 4c and 4d are schematic diagrams of a fingerprint sensor embedded in a touch capacitive sensor according to various embodiments of the present disclosure;

FIG. 5 is a system diagram of a touch device according to another embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a touch device according to another embodiment of the present application;

FIG. 7 is a schematic flow chart of a method for determining a capacitive sensing quantity of a touch device according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a touch capacitive sensor according to an embodiment of the present application;

FIG. 9 is a schematic diagram illustrating a method for determining a capacitive sensing quantity of a touch device according to an embodiment of the present disclosure;

FIG. 10 is a diagram illustrating a method for determining a capacitive sensing quantity of a touch device according to another embodiment of the present application;

FIG. 11 is a schematic flow chart of a method for determining a capacitive sensing quantity of a touch device according to another embodiment of the present application;

FIG. 12 is a diagram illustrating a method for determining a capacitive sensing quantity of a touch device according to another embodiment of the present application;

FIG. 13 is a diagram illustrating a method for determining a capacitive sensing quantity of a touch device according to another embodiment of the present application;

FIG. 14 is a diagram illustrating a method for determining a capacitive sensing quantity of a touch device according to another embodiment of the present application;

fig. 15 is a schematic structural diagram of a touch device according to an embodiment of the present application.

Detailed Description

For ease of understanding, an exemplary diagram of a system architecture to which embodiments of the present application can be applied is first described in its entirety. Fig. 1 shows an architecture diagram of a touch device according to an embodiment of the present application. Fig. 1 shows a touch device with fingerprint identification function, which includes a touch capacitive sensor 110, a fingerprint identification sensor 120 and a detection processing circuit 130. The touch capacitive sensor 110 includes a plurality of sensing nodes 111, the fingerprint sensor 120 is embedded in the sensing nodes 111, and the detection processing circuit 130 includes a touch detection circuit 131, a fingerprint detection circuit 132 and a main controller circuit 133. The touch detection circuit 131 is used for collecting capacitance sensing quantity of the touch capacitive sensor, the fingerprint detection circuit 132 is used for collecting fingerprint data, the main controller circuit 133 is responsible for data transmission, processing, touch coordinate operation and the like of the fingerprint sensor and the capacitive sensor, and the detection processing circuit here may be a single integrated circuit.

Fig. 2 shows an enlarged view of a portion of sense nodes in a touch capacitive sensor. The touch capacitive sensor 110 includes a plurality of capacitive sensing nodes 111 arranged in a matrix, and fig. 2 shows three sensing electrode patterns. The side lengths of the capacitance sensing nodes are respectively D1 and D2. Of course, in practical engineering applications, the structure of the capacitive sensing node is not limited to the structure shown in fig. 2, and may be, for example, a cross-shaped sensing electrode pattern, which is not limited in the present application.

In some schemes, in order to avoid combining fingerprint identification sensor and touch device together and then cause the regional touch blind area that forms of installation fingerprint identification sensor, gather the capacitance induction volume through the fingerprint detection circuit in the fingerprint identification sensor, and then can compensate the capacitance induction volume that the fingerprint identification sensor occupies the position, that is to say, this scheme needs the capacitance induction volume of gathering fingerprint identification sensor and touch control capacitance sensor's capacitance induction volume simultaneously, and the system complexity is higher, and fingerprint identification sensor's consumption is great.

Fig. 3 shows a schematic structural diagram of a touch device according to an embodiment of the present application. The touch device includes a touch capacitive sensor 110, a fingerprint recognition sensor 120, and a detection processing circuit 130. The touch capacitive sensor 110 includes M sensing nodes 111 and a fingerprint sensor 120, where M is a positive integer greater than or equal to 2. The fingerprint sensor 120 is embedded in N capacitive sensing nodes of the M capacitive sensing nodes 111, that is, the N capacitive sensing nodes are dug out. The fingerprint sensor 120 does not cover the position of any single capacitive sensing node completely. In addition, the upper surface of the fingerprint sensor 120 may be flush with the upper surface of the touch capacitive sensor 110. The detection processing circuit 130 is connected to the touch capacitive sensor and the fingerprint sensor, and the detection processing circuit 130 is configured to detect a first capacitance sensing quantity of the M capacitance sensing nodes according to the touch capacitive sensor.

The fingerprint sensor 120 may be embedded in the N capacitive sensing nodes of the M capacitive sensing nodes 111, and may be located at the middle lower part, the bottom part, the middle right-most part, or the middle right-most part of the touch capacitive sensor, as shown in fig. 4a, 4b, 4c, and 4d, but the application is not limited thereto.

Because the fingerprint sensor 120 does not cover any complete capacitance sensing node, the touch capacitance sensor can detect the capacitance sensing amount of each capacitance sensing node in the M capacitance sensing nodes, and compensate the capacitance sensing amount of the N capacitance sensing nodes, which is reduced due to the occupation of the fingerprint sensor, by the capacitance sensing amount of the capacitance sensing nodes except the N capacitance sensing nodes in the M capacitance sensing nodes. Therefore, the touch device can compensate the capacitance induction quantity of the capacitance induction node belonging to the position occupied by the fingerprint identification sensor only through the capacitance induction quantity of the capacitance induction node measured by the touch capacitance sensor by arranging the position of the fingerprint identification sensor, the touch capacitance induction quantity is not required to be compensated through detection of the fingerprint identification sensor, the complexity is reduced, and the power consumption of the fingerprint identification sensor is saved.

Optionally, the upper surfaces of the M capacitive sensing nodes may be flush, and may be rectangular, oval, circular, square, or other irregular shapes, which is not limited in this application. For convenience of description, the embodiment of the present application is described by taking the upper surface of the capacitive sensing node as a rectangle as an example.

It should be understood that the upper surfaces of the M capacitive sensing nodes may all have the same structure, or may be partially the same, or all of the M capacitive sensing nodes may be different, which is not limited in this application.

Similarly, the upper surface of the fingerprint sensor may be rectangular, oval, circular, square, or other irregular shapes, and the like, which is not limited in this application. For convenience of description, the embodiment of the present application is described by taking the upper surface of the capacitive sensing node as a rectangle as an example.

Optionally, the upper surfaces of at least two of the M capacitive sensing nodes may be connected in common vertex or common edge. A capacitive sense node's neighboring sense node can also be a capacitive sense node that has a common vertex or common edge with the capacitive sense node.

Optionally, the detection processing circuit includes a touch detection circuit and a first controller, the touch detection circuit is configured to collect a capacitance sensing amount of each capacitance sensing node in the touch capacitive sensor, and the first controller is configured to process the capacitance sensing amount of each capacitance sensing node detected by the touch capacitive sensor.

Optionally, the detection processing circuit further includes a fingerprint detection circuit, the fingerprint detection circuit is configured to collect capacitance sensing of the fingerprint sensor, and the first controller is further configured to process the capacitance sensing of the fingerprint sensor, that is, the fingerprint detection circuit and the touch detection circuit may be controlled by the same controller, for example, as the main controller circuit 133 in fig. 1.

Alternatively, the fingerprint detection circuit may be controlled by a different controller than the touch detection circuit. For example, as shown in fig. 5, the capacitance sensing amount collected by the touch detection circuit is processed by the microcontroller 1 (represented as a first controller), and the capacitance sensing amount collected by the fingerprint sensor is processed by the microcontroller 2 (represented as a second controller).

Optionally, the upper surfaces of the touch capacitive sensor and the fingerprint recognition sensor may be provided with a protective layer, as shown in fig. 6. Wherein the passivation layer can be silica glass.

It should be understood that the touch of a touch object to the capacitive sense node or fingerprint sensor may be a touch on the protective layer, which is transmitted through the protective layer.

Optionally, as an embodiment, the touch capacitive sensor is specifically configured to detect a first capacitance sensing amount of a first capacitance sensing node and a first capacitance sensing amount of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes in the M capacitance sensing nodes; the first controller is further configured to determine a second capacitive sense quantity of the first capacitive sense node based on the first capacitive sense quantity of the first capacitive sense node and the first capacitive sense quantity of each capacitive sense node in the set of adjacent capacitive sense nodes.

Optionally, as an embodiment, the first controller is specifically configured to: determining a compensation coefficient of the first capacitive sensing node according to the first capacitive sensing quantity of the first capacitive sensing node and the first capacitive sensing quantity of each capacitive sensing node in the adjacent capacitive sensing node set; and determining a second capacitance induction quantity of the first capacitance induction node according to the compensation coefficient and the first capacitance induction quantity of the first capacitance induction node. The second capacitance sensing amount can be regarded as the corrected or compensated capacitance sensing amount of the first capacitance sensing amount.

Optionally, as an embodiment, when a touch object touches the fingerprint identification sensor, the touch capacitive sensor is further configured to detect a third capacitive sensing quantity of the first capacitive sensing node; the first controller is further configured to determine a fourth capacitive sense of the first capacitive sense node based on the compensation factor and the third capacitive sense.

Optionally, as an embodiment, the first capacitance sensing amount of the first capacitance sensing node is detected by the touch capacitance sensor when the fingerprint sensor is not touched, and a difference between the second capacitance sensing amount and the fourth capacitance sensing amount is used to determine a barycentric position coordinate of the touch object touching the fingerprint sensor.

Optionally, as an embodiment, the first controller is specifically configured to determine a ratio of an average value of first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as the compensation coefficient of the first capacitance induction node.

Optionally, as an embodiment, the first controller is specifically configured to determine a product of the compensation coefficient and the third capacitance sensing amount as the fourth capacitance sensing amount.

Optionally, as an embodiment, the first controller is further configured to detect a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes in the M capacitance sensing nodes; the first controller is further configured to determine a second capacitance sensing variation of the first capacitance sensing node according to a first capacitance sensing variation of each capacitance sensing node in the adjacent capacitance sensing node set before and after the touch of the touch object and a first capacitance sensing variation of the first capacitance sensing node before and after the touch of the touch object.

Optionally, as an embodiment, the first controller is specifically configured to: determining a compensation coefficient of each capacitive sensing node in the adjacent capacitive sensing node set before and after the touch object touches according to a first capacitive sensing variation of each capacitive sensing node in the adjacent capacitive sensing node set before and after the touch object touches and a first capacitive sensing variation of each capacitive sensing node in the adjacent capacitive sensing node set before and after the touch object touches; and determining the second capacitance induction variation according to the compensation coefficient and the first capacitance induction variation of the first capacitance induction node before and after the touch of the touch object.

Optionally, as an embodiment, the first controller is further configured to determine a third capacitance sensing variation of the first capacitance sensing node before and after the touch; the first controller is further configured to determine a fourth capacitance sense variation of the first capacitance sense node according to the compensation coefficient and the third capacitance sense variation.

Optionally, as an embodiment, the fourth capacitance sensing variation is used to determine a barycentric location coordinate of the touch object touching the fingerprint identification sensor.

Optionally, as an embodiment, the first controller is specifically configured to: and determining the ratio of the average value of the first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as the compensation coefficient of the first capacitance induction node.

Optionally, as an embodiment, the first controller is specifically configured to: and determining the product of the compensation coefficient and the third capacitance sensing variation as the fourth capacitance sensing variation.

Therefore, the touch device of the embodiment of the application can compensate the capacitance induction quantity of the capacitance induction node belonging to the position occupied by the fingerprint identification sensor by the capacitance induction quantity of the capacitance induction node measured by the touch capacitance sensor only through the position of the fingerprint identification sensor, and compared with the method for detecting the capacitance induction quantity and compensating the capacitance induction quantity by using the fingerprint identification sensor, the complexity is reduced, and the power consumption of the fingerprint identification sensor is saved.

Fig. 7 illustrates a method 700 for determining a capacitive sensing quantity of a touch device according to an embodiment of the present application. The touch device comprises a touch capacitive sensor, a fingerprint identification sensor and a controller, wherein the touch capacitive sensor comprises M capacitive sensing nodes, M is a positive integer and is more than or equal to 2, the fingerprint identification sensor is embedded in N capacitive sensing nodes in the M capacitive sensing nodes, N is a positive integer and is more than or equal to 1, the occupied position of the fingerprint identification sensor on the touch device does not completely cover the occupied position of any capacitive sensing node in the M capacitive sensing nodes, and the method 700 comprises the following steps:

s710, the touch capacitive sensor detects a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node other than the N capacitance sensing nodes in the M capacitance sensing nodes;

s720, the controller determines a second capacitance induction quantity of the first capacitance induction node according to the first capacitance induction quantity of the first capacitance induction node and the first capacitance induction quantity of each capacitance induction node in the adjacent capacitance induction node set;

s730, the controller determines whether the first capacitive sensing node is touched according to the second capacitive sensing amount.

Specifically, the touch device in the method for determining a capacitive sensing quantity of a touch device according to the embodiment of the present application may be any one of the touch devices according to the above embodiments (for example, as shown in fig. 1, fig. 3, and fig. 5), and for avoiding repetition, the details are not repeated herein.

The touch capacitive sensor detects a capacitive sensing quantity of a first capacitive sensing node of the N capacitive sensing nodes, and detects a set of capacitive sensing nodes (denoted as a set of adjacent capacitive sensing nodes) adjacent to the first capacitive sensing node and not the N capacitive sensing nodes. Because the part of the first capacitance sensing node is dug down and embedded into the fingerprint identification sensor, the capacitance sensing quantity of the first capacitance sensing node is smaller than that of the peripheral capacitance sensing nodes. In order to maintain the better linearity of the touch device, according to the principle that the capacitance induction quantities of adjacent sensing nodes are close to each other, the embodiment of the application compensates the capacitance induction quantities of the capacitance sensing nodes, which are not occupied by the fingerprint identification sensor, on the periphery. Specifically, the controller (i.e., the main controller circuit or the first controller) compensates the first capacitance sensing amount of the first capacitance sensing node according to the first capacitance sensing amount of each capacitance sensing node in the adjacent capacitance sensing node set, and generates a second capacitance sensing amount, so that the controller can determine whether the first capacitance sensing node has a touch according to the second capacitance sensing amount. Specifically, the controller may pre-store the capacitance sensing amount (i.e., equivalent to the reference capacitance sensing amount) of the first capacitance sensing node when no touch is present, and then determine whether the first capacitance sensing node has a touch according to whether the second capacitance sensing amount is the same as the reference capacitance sensing amount or a difference capacitance sensing amount threshold.

It should be understood that the touch capacitive sensor can simultaneously detect the capacitance sensing amount of each of the M capacitance sensing nodes through one scan.

It should also be understood that each capacitive sense node of the N capacitive sense nodes embedded in the fingerprint sensor may compensate its respective first capacitive sense amount according to a compensation method similar to that of the first capacitive sense node, and obtain a corresponding second capacitive sense amount.

Alternatively, adjacent to the first capacitive sensing node, there may be a capacitive sensing node having a common edge or a common vertex.

Optionally, the first controller may determine a compensation coefficient of the first capacitive sensing node according to the first capacitive sensing quantity of the first capacitive sensing node and the first capacitive sensing quantity of each capacitive sensing node in the adjacent capacitive sensing node set, and then compensate the first capacitive sensing quantity of the first capacitive sensing node according to the compensation coefficient, so as to obtain a compensated second capacitive sensing quantity of the first capacitive sensing node. The touch device can store the compensation coefficient, for example, put the compensation coefficient into a compensation coefficient library, for example, a table or the like can be set. When a subsequent touch object touches the touch capacitive sensor, the first controller may determine the compensated capacitance sensing amount according to the compensation coefficient.

It should be understood that the compensation coefficients of the N capacitive sense nodes occupied by the fingerprint sensor can be calculated separately, that is, the compensation coefficients of the N capacitive sense nodes can be the same or different.

In a specific embodiment, as shown in fig. 8, the touch capacitive sensor has 12 × 16 capacitive sensing nodes, each of the capacitive sensing nodes is arranged in a matrix, and a side length of each of the capacitive sensing nodes is D1-5 mm, and D2-4 mm. The size of the fingerprint sensor is 4 x9 mm. The areas of 2/5 of four capacitance sensing nodes crossed with TX 5-TX 6 and RX 9-RX 10 are covered by the fingerprint identification sensor. When no touch object touches the touch device, after the touch capacitive sensor scans all the capacitive sensing nodes, the capacitive sensing quantities of the plurality of capacitive sensing nodes which are not occupied by the fingerprint identification sensor are respectively a, and the capacitive sensing quantities of the plurality of sensing nodes which are occupied by the fingerprint identification sensor are respectively b. The measured values of the specific capacitance inductions are shown in fig. 9, in which the capacitance inductions of the four capacitance induction nodes and their peripheral nodes crossing TX 5-TX 6 and RX 9-RX 10.

The capacitance induction quantity of the four capacitance induction nodes intersected with the RX 9-RX 10 by the TX 5-TX 6 is smaller than that of the peripheral capacitance induction nodes. Taking the sensing nodes (TX5, RX9) where TX5 crosses RX9 as an example, the neighboring sensing nodes (i.e. the set of contiguous capacitive sensing nodes) not occupied by the fingerprint sensor are (TX4, RX10), (TX4, RX9), (TX4, RX8), (TX5, RX8) and (TX6, RX 8). The capacitance induction amount of the sensing nodes (TX5, RX9) is determined according to the capacitance induction amounts of the sensing nodes, for example, an average value of the capacitance induction amounts of the sensing nodes is determined as the compensated capacitance induction amount of (TX5, RX9), which is (921+920+930+9229+966)/5 ═ 933.2, or an integer 933, as shown in fig. 10.

Optionally, the first controller may determine a ratio of an average value of first capacitance sensing quantities of the capacitance sensing nodes in the adjacent capacitance sensing node set to the first capacitance sensing quantity of the first capacitance sensing node as a compensation coefficient of the first capacitance sensing node.

Specifically, the capacitance induction quantity of the sensing node adjacent to the sensing node (TX5, RX9) in fig. 9 is averaged and then divided by the capacitance induction quantity of the node to obtain the compensation coefficient. The compensation factor may be stored in a look-up table, and the subsequent controller may determine the compensated capacitance sensing amount according to the compensation factor.

Optionally, the touch capacitive sensor detects a third capacitive sensing quantity of the first capacitive sensing node, where the third capacitive sensing quantity is different from the first capacitive sensing quantity; the controller determines a fourth capacitive sensing variable of the first capacitive sensing node according to the compensation coefficient and the third capacitive sensing variable. Optionally, the controller determines a product of the compensation coefficient and the third capacitance sensing amount as the fourth capacitance sensing amount.

Specifically, after each time of scanning each sensing node, the plurality of capacitance sensing quantities b to be compensated may be multiplied by the corresponding compensation coefficients to obtain a plurality of compensated capacitance sensing quantities c, as shown in fig. 10.

Optionally, a difference between the second capacitance sensing quantity and the fourth capacitance sensing quantity is used to determine a barycentric location coordinate of the touch object touching the fingerprint identification sensor. When a touch object operates on the touch device, after the touch capacitive sensor scans each sensing node and completes compensation operation, the coordinate of the touch object can be calculated according to the variation of a plurality of capacitive sensing quantities a and a plurality of capacitive sensing quantities c of the front frame and the rear frame, or the gesture of the touch object can be recognized.

Therefore, in the method for determining a capacitance sensing amount of a touch device according to an embodiment of the present application, a touch capacitive sensor detects a first capacitance sensing amount of a first capacitance sensing node and a first capacitance sensing amount of each capacitance sensing node in a set of adjacent capacitance sensing nodes, the first capacitance sensing node is any one of the N capacitance sensing nodes, the set of adjacent capacitance sensing nodes includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes among the M capacitance sensing nodes, a controller determines a second capacitance sensing amount of the first capacitance sensing node according to the first capacitance sensing amount of the first capacitance sensing node and the first capacitance sensing amount of each capacitance sensing node in the set of adjacent capacitance sensing nodes, therefore, the capacitance induction quantity of the capacitance induction node occupied by the fingerprint identification sensor is compensated through the capacitance induction quantity of the capacitance induction node around the fingerprint identification sensor, the capacitance induction quantity of each pixel electrode inside the fingerprint identification sensor is prevented from being compensated, and the system complexity and the power consumption of the fingerprint identification sensor are reduced.

Fig. 11 illustrates a method 1100 for determining a capacitive sensing quantity of a touch device according to an embodiment of the present disclosure. The touch device comprises a touch capacitive sensor, a fingerprint identification sensor and a controller, wherein the touch capacitive sensor comprises M capacitive sensing nodes, M is a positive integer and is more than or equal to 2, the fingerprint identification sensor is embedded in N capacitive sensing nodes in the M capacitive sensing nodes, N is a positive integer and is more than or equal to 1, the occupied position of the fingerprint identification sensor on the touch device does not completely cover the occupied position of any capacitive sensing node in the M capacitive sensing nodes, and the method 1100 comprises the following steps:

s1110, the touch capacitive sensor detects a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes in the M capacitance sensing nodes;

s1120, the controller determines a second capacitance sensing variation of the first capacitance sensing node according to a first capacitance sensing variation of each capacitance sensing node in the adjacent capacitance sensing node set before and after the touch object touches and a first capacitance sensing variation of the first capacitance sensing node before and after the touch object touches;

s1130, the controller determines whether the first capacitive sensing node is touched according to the second capacitance variation.

Specifically, when no touch object touches the fingerprint identification sensor, the touch sensor detects a first capacitance sensing amount of the first capacitance sensing node, when the touch object touches the fingerprint identification sensor, the touch sensor detects a third capacitance sensing amount of the first capacitance sensing node, and the controller determines a difference value between the first capacitance sensing amount and the third capacitance sensing amount as a first capacitance sensing variation amount of the first capacitance sensing node. The controller may also determine a first capacitance sense variation for each sense node in the set of adjacent capacitance sense nodes. Because the part of the first capacitance sensing node is dug and embedded into the fingerprint identification sensor, the capacitance sensing variation of the first capacitance sensing node is smaller than that of the peripheral capacitance sensing nodes. In order to maintain the better linearity of the touch device, according to the principle that the capacitance sensing variation of adjacent sensing nodes is similar, the embodiment of the application compensates the capacitance sensing variation of the capacitance sensing node, which is not occupied by the fingerprint identification sensor, at the periphery. Specifically, the controller can compensate the first capacitance sensing variation of the first capacitance sensing node according to the first capacitance sensing variation of each sensing node in the adjacent capacitance sensing node set, and generate a second capacitance sensing variation, so that the controller can determine whether the first capacitance sensing node is touched according to the second capacitance variation. Specifically, the controller may determine whether the first capacitive sensing node has a touch according to whether the second capacitance variation is the same as a predetermined reference capacitance variation or a capacitance variation threshold value different from the predetermined reference capacitance variation.

It should be understood that before and after the touch object touches, the capacitance sensing variation of the capacitance sensing node may be a result of one touch of the touch object, or may be a maximum variation of the capacitance sensing variation before and after the touch object touches multiple times.

It should also be understood that the meaning of various terms in the embodiments of the present application is the same as that in the embodiments described above, and detailed description is omitted here to avoid redundancy.

It should be noted that, in the embodiment of the present application, the capacitance sensing nodes for measuring the change before and after the touch of the touch object should use the same touch object, but the embodiment of the present application is not limited to be applied to the same touch object.

Optionally, the controller may determine a compensation coefficient of the first capacitive sensing node according to a first capacitive sensing variation of each capacitive sensing node in the adjacent capacitive sensing node set before and after the touch object touches and a first capacitive sensing variation of the first capacitive sensing node before and after the touch object touches, and then compensate the first capacitive sensing variation of the first capacitive sensing node before and after the touch object touches according to the compensation coefficient to generate a second capacitive sensing variation.

It should be noted that the compensation coefficient may be used for touching of a touching object used in subsequent measurement. That is, the compensation coefficient determined according to a touch object can only be used for compensation operation after the touch object touches. For example, if the determined touch coefficient is used, the compensation operation for finger touch is performed subsequently; if the touch coefficient determined by the touch pen is used, the compensation operation of the touch pen is subsequently performed. The touch device can classify the touch objects according to the touch areas or other characteristic areas and respectively store the compensation coefficients.

In a specific embodiment, the structures of the touch capacitive sensor and the fingerprint sensor are as shown in fig. 8, and as shown in fig. 12, the capacitance sensing change of the four capacitive sensing nodes and the peripheral nodes intersected with the capacitance sensing nodes TX5 to TX6 and RX9 to RX 10. Taking the sensing nodes (TX5, RX9) where TX5 crosses RX9 as an example, the neighboring sensing nodes (i.e. the set of contiguous capacitive sensing nodes) not occupied by the fingerprint sensor are (TX4, RX10), (TX4, RX9), (TX4, RX8), (TX5, RX8) and (TX6, RX 8). The capacitance sensing variation of the sensing nodes (TX5, RX9) is determined according to the capacitance sensing variation of the sensing nodes, for example, the average value of the capacitance sensing variation of the sensing nodes is determined as the compensated capacitance sensing variation (TX5, RX9), as shown in fig. 13.

Optionally, the method further comprises: the touch capacitive sensor detects a third capacitive sensing quantity of the first capacitive sensing node, wherein the third capacitive sensing quantity is different from the first capacitive sensing quantity; the controller determines a fourth capacitive sensing variable of the first capacitive sensing node according to the compensation coefficient and the third capacitive sensing variable.

Specifically, the compensation coefficient is obtained by averaging the capacitance sensing change of the sensing node adjacent to the sensing node (TX5, RX9) in fig. 12 and dividing the average by the capacitance sensing change of the sensing node. The compensation coefficients may be stored in a look-up table, and the subsequent controller may determine the compensated capacitance sensing variation according to the compensation coefficients.

Optionally, the touch capacitive sensor determines a third capacitance sensing variation of the first capacitance sensing node before and after the touch; the controller determines a fourth capacitance sensing variation of the first capacitance sensing node according to the compensation coefficient and the third capacitance sensing variation.

Optionally, the fourth capacitance sensing variation is used to determine a barycentric location coordinate of the touch object touching the fingerprint identification sensor.

For example, when a touch object is operated on the touch device, the first controller compensates the capacitance sensing variation to obtain the data shown in fig. 14, where the ellipse in fig. 14 is that a finger (i.e., the touch object) touches the fingerprint recognition sensor, D1, D2, D9 is the capacitance sensing variation of each capacitive sensing node, and x1, x2, x3, y1, y2, and y3 are the coordinates of the corresponding x direction and y direction of each sensing node. Thus, the touch device can calculate the barycentric position coordinate (X) of the fingerprint identification sensor according to the following formula_A，Y_A)：

It should be understood that the touch object may be a finger, a stylus, or the like, and this is not limited in this application.

Therefore, in the method for determining a capacitance sensing amount of a touch device according to an embodiment of the present application, a touch capacitive sensor detects a first capacitance sensing variation of a first capacitance sensing node and a first capacitance sensing variation of each capacitance sensing node in a set of adjacent capacitance sensing nodes, the first capacitance sensing node is any one of the N capacitance sensing nodes, the set of adjacent capacitance sensing nodes includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes among the M capacitance sensing nodes, a controller determines a second capacitance sensing variation of the first capacitance sensing node according to the first capacitance sensing variation of the first capacitance sensing node and the first capacitance sensing variation of each capacitance sensing node in the set of adjacent capacitance sensing nodes, therefore, the capacitance sensing variation of the capacitance sensing node occupied by the fingerprint identification sensor is compensated through the capacitance sensing variation of the capacitance sensing node around the fingerprint identification sensor, the capacitance sensing variation of each pixel electrode inside the fingerprint identification sensor is prevented from being compensated, and the system complexity and the power consumption of the fingerprint identification sensor are reduced.

Optionally, an embodiment of the present application provides a terminal device, which includes the touch device according to the foregoing description. The terminal device includes but is not limited to a mobile phone, a mobile station, a tablet computer or a digital camera.

Fig. 15 shows a schematic structural diagram of a touch device provided in an embodiment of the present application. As shown in fig. 15, the touch device includes at least one transceiver 1505 (receiver/transmitter 1505). The touch device further includes at least one processor 1502 (e.g., a general purpose processor CPU, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA), etc., with computing and processing capabilities), and a memory 1506, the processor 1502 being used for interfacing with a controller and a touch sensor within the touch device. The touch capacitive sensor 110 and the microcontroller 1 in fig. 5 can be implemented by the processor 1502. The touch device further includes at least one transceiver 1505 (receiver/transmitter), a memory 1506. The components of the touch device communicate with each other through internal connection paths to transmit control and/or data signals.

The methods disclosed in the embodiments of the present application described above may be applied to the processor 1502 or used to execute executable modules, such as computer programs, stored in the memory 1506. The Memory 1506 may include a high-speed Random Access Memory (RAM) and a non-volatile Memory (non-volatile Memory), and may include a read-only Memory and a Random Access Memory (RAM), and provide required signaling or data, programs, and the like to the processor. The portion of memory may also include non-volatile row random access memory (NVRAM). The communication connection with at least one other network element is realized through at least one transceiver 1505, which may be wired or wireless.

In some embodiments, the memory 1506 stores the programs 15061, and the processor 1502 executes the programs 15061 to:

detecting a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, wherein the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set comprises all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing nodes are capacitance sensing nodes except the N capacitance sensing nodes in the M capacitance sensing nodes;

determining a second capacitance induction quantity of the first capacitance induction node according to the first capacitance induction quantity of the first capacitance induction node and the first capacitance induction quantity of each capacitance induction node in the adjacent capacitance induction node set, or determining a second capacitance induction change quantity of the first capacitance induction node according to a first capacitance induction change quantity of each capacitance induction node in the adjacent capacitance induction node set before and after the touch object touches and a first capacitance induction change quantity of the first capacitance induction node before and after the touch object touches;

and determining whether the first capacitance sensing node is touched or not according to the second capacitance sensing quantity and/or the second capacitance variation quantity.

It should be noted that the touch device may be embodied as the touch device in the embodiments shown in fig. 3 to fig. 6, and may be used to execute each step and/or flow corresponding to the touch device in the method embodiments shown in fig. 7 or fig. 11.

It can be seen from the above technical solutions provided in the embodiments of the present application that a touch capacitive sensor detects a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, where the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, the second capacitance sensing node is a capacitance sensing node except the N capacitance sensing nodes in the M capacitance sensing nodes, and a controller determines a second capacitance sensing quantity of the first capacitance sensing node according to the first capacitance sensing quantity of the first capacitance sensing node and the first capacitance sensing quantity of each capacitance sensing node in the adjacent capacitance sensing node set, so that a fingerprint identification sensing node is compensated by the capacitance sensing quantities of the capacitance sensing nodes around the fingerprint identification sensor The capacitance induction quantity of the capacitance induction node occupied by the device avoids the capacitance induction quantity of each pixel electrode in the fingerprint identification sensor from being used for compensation, and the system complexity and the power consumption of the fingerprint identification sensor are reduced.

Embodiments of the present application also provide a computer storage medium that can store program instructions for instructing any one of the methods described above.

Alternatively, the storage medium may be embodied as the memory 1506.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A touch device, comprising:

the touch capacitive sensor comprises M capacitive sensing nodes, wherein M is a positive integer and is more than or equal to 2, and the touch capacitive sensor is used for detecting first capacitive sensing quantities of the M capacitive sensing nodes;

the fingerprint identification sensor is embedded in N capacitance sensing nodes in the M capacitance sensing nodes, N is a positive integer and is not less than 1, and the position occupied by the fingerprint identification sensor on the touch device does not completely cover the position occupied by any capacitance sensing node in the M capacitance sensing nodes;

the detection processing circuit is connected with the touch capacitive sensor and the fingerprint identification sensor, and is used for compensating the first capacitance induction quantity of the N capacitance induction nodes to generate a second capacitance induction quantity according to the first capacitance induction quantity of the M capacitance induction nodes detected by the touch capacitive sensor, and the second capacitance induction quantity is used for determining whether the N capacitance induction nodes touch or not.

2. The touch device according to claim 1, wherein the detection processing circuit comprises a touch detection circuit and a first controller, the touch detection circuit is configured to collect capacitance sensing values of the touch capacitive sensor, and the first controller is configured to process the capacitance sensing values collected by the touch detection circuit.

3. The touch device of claim 2, wherein the detection processing circuit further comprises a fingerprint detection circuit, the fingerprint detection circuit is configured to collect a capacitance sensing amount of the fingerprint sensor, and the first controller is further configured to process the capacitance sensing amount of the fingerprint sensor.

4. The touch device of claim 2, wherein the detection processing circuit further comprises a fingerprint detection circuit and a second controller, the fingerprint detection circuit is configured to collect the capacitance sensing amount of the fingerprint sensor, the second controller is configured to process the capacitance sensing amount of the fingerprint sensor, and the first controller is different from the second controller.

5. The touch device according to any one of claims 2 to 4, wherein a protective layer is disposed on an upper surface of the touch capacitive sensor and the fingerprint recognition sensor.

6. The touch device of any one of claims 2-4, wherein an upper surface of the capacitive sensing node is rectangular.

7. The touch device of any one of claims 2-4, an upper surface of the fingerprint recognition sensor being rectangular.

8. The touch device of any one of claims 2-4, wherein top surfaces of at least two of the M capacitive sense nodes are connected together at a common vertex or a common edge.

9. The touch device according to any one of claims 2 to 4, wherein the touch capacitive sensor is specifically configured to detect a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in a neighboring capacitance sensing node set, the first capacitance sensing node is any one of the N capacitance sensing nodes, the neighboring capacitance sensing node set includes all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing nodes are capacitance sensing nodes other than the N capacitance sensing nodes in the M capacitance sensing nodes;

the first controller is further configured to determine a second capacitance sensing quantity of the first capacitance sensing node according to the first capacitance sensing quantity of the first capacitance sensing node and the first capacitance sensing quantity of each capacitance sensing node in the adjacent capacitance sensing node set.

10. The touch device of claim 9, wherein the first controller is specifically configured to:

determining a compensation coefficient of the first capacitive sensing node according to the first capacitive sensing quantity of the first capacitive sensing node and the first capacitive sensing quantity of each capacitive sensing node in the adjacent capacitive sensing node set;

and determining a second capacitance induction quantity of the first capacitance induction node according to the compensation coefficient and the first capacitance induction quantity of the first capacitance induction node.

11. The touch device of claim 10, wherein the touch capacitive sensor is further configured to detect a third capacitive sensing quantity of the first capacitive sensing node when a touch object touches the fingerprint sensor;

the first controller is further configured to determine a fourth capacitive sensing variable of the first capacitive sensing node according to the compensation coefficient and the third capacitive sensing variable.

12. The touch device of claim 11, wherein a first capacitive sensing quantity of the first capacitive sensing node is detected by the touch capacitive sensor when the fingerprint sensor is not touched, and a difference between the second capacitive sensing quantity and the fourth capacitive sensing quantity is used to determine a barycentric location coordinate of the touch object touching the fingerprint sensor.

13. The touch device of claim 11 or 12, wherein the first controller is specifically configured to determine a ratio of an average value of first capacitive sensing quantities of capacitive sensing nodes in the adjacent capacitive sensing node set to the first capacitive sensing quantity of the first capacitive sensing node as a compensation coefficient of the first capacitive sensing node.

14. The touch device of claim 13, wherein the first controller is specifically configured to determine a product of the compensation coefficient and the third capacitive sensing amount as the fourth capacitive sensing amount.

15. The touch device of any one of claims 2 to 4, wherein the first controller is further configured to detect a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in a set of adjacent capacitance sensing nodes, the first capacitance sensing node being any one of the N capacitance sensing nodes, the set of adjacent capacitance sensing nodes including all second capacitance sensing nodes adjacent to the first capacitance sensing node, the second capacitance sensing nodes being capacitance sensing nodes other than the N capacitance sensing nodes in the M capacitance sensing nodes;

the first controller is further configured to determine a second capacitance sensing variation of the first capacitance sensing node according to a first capacitance sensing variation of each capacitance sensing node in the adjacent capacitance sensing node set before and after the touch of the touch object and a first capacitance sensing variation of the first capacitance sensing node before and after the touch of the touch object.

16. The touch device of claim 15, wherein the first controller is specifically configured to:

determining a compensation coefficient of each capacitive sensing node in the adjacent capacitive sensing node set according to a first capacitive sensing variation of each capacitive sensing node before and after touch of a touch object and a first capacitive sensing variation of each capacitive sensing node before and after touch of the touch object;

and determining the second capacitance induction variation according to the compensation coefficient and the first capacitance induction variation of the first capacitance induction node before and after the touch of the touch object.

17. The touch device of claim 16, wherein the first controller is further configured to determine a third capacitance sensing variation of the first capacitance sensing node before and after the touch;

the first controller is further configured to determine a fourth capacitance sensing variation of the first capacitance sensing node according to the compensation coefficient and the third capacitance sensing variation.

18. The touch device of claim 17, wherein the fourth capacitance-induced variation is used to determine a barycentric location coordinate of the touch object touching the fingerprint recognition sensor.

19. The touch device of claim 17 or 18, wherein the first controller is specifically configured to: determining a ratio of an average value of first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as a compensation coefficient of the first capacitance induction node.

20. The touch device of claim 19, wherein the first controller is specifically configured to:

determining a product of the compensation coefficient and the third capacitance sensing variation as the fourth capacitance sensing variation.

21. A method for determining capacitance induction quantity of a touch device is characterized in that the touch device comprises a touch capacitive sensor, a fingerprint identification sensor and a controller, the touch capacitive sensor comprises M capacitance induction nodes, M is a positive integer and is more than or equal to 2, the fingerprint identification sensor is embedded in N capacitance induction nodes in the M capacitance induction nodes, N is a positive integer and is more than or equal to 1, the position occupied by the fingerprint identification sensor on the touch device does not completely cover the position occupied by any capacitance induction node in the M capacitance induction nodes, and the method comprises the following steps:

the touch capacitive sensor detects a first capacitance sensing quantity of a first capacitance sensing node and a first capacitance sensing quantity of each capacitance sensing node in an adjacent capacitance sensing node set, wherein the first capacitance sensing node is any one of the N capacitance sensing nodes, the adjacent capacitance sensing node set comprises all second capacitance sensing nodes adjacent to the first capacitance sensing node, and the second capacitance sensing nodes are capacitance sensing nodes except the N capacitance sensing nodes in the M capacitance sensing nodes;

the controller determines a second capacitance induction quantity of the first capacitance induction node according to a first capacitance induction quantity of the first capacitance induction node and a first capacitance induction quantity of each capacitance induction node in an adjacent capacitance induction node set, or determines a second capacitance induction change quantity of the first capacitance induction node according to a first capacitance induction change quantity of each capacitance induction node in the adjacent capacitance induction node set before and after touch of a touch object and a first capacitance induction change quantity of the first capacitance induction node before and after touch of the touch object;

and the controller determines whether the first capacitive sensing node is touched according to the second capacitive sensing quantity and/or the second capacitive sensing quantity.

22. The method of claim 21, wherein the controller determining the second capacitive sense quantity for the first capacitive sense node based on the first capacitive sense quantity for the first capacitive sense node and the first capacitive sense quantity for each capacitive sense node in the set of adjacent capacitive sense nodes comprises:

the controller determines a compensation coefficient of the first capacitive sensing node according to a first capacitive sensing quantity of the first capacitive sensing node and a first capacitive sensing quantity of each capacitive sensing node in the adjacent capacitive sensing node set;

and the controller determines a second capacitance induction quantity of the first capacitance induction node according to the compensation coefficient and the first capacitance induction quantity of the first capacitance induction node.

23. The method of claim 22, further comprising:

when a touch object touches the fingerprint identification sensor, the touch capacitive sensor detects a third capacitive sensing quantity of the first capacitive sensing node;

and the controller determines a fourth capacitance induction quantity of the first capacitance induction node according to the compensation coefficient and the third capacitance induction quantity.

24. The method of claim 23, wherein a first capacitive sensing quantity of the first capacitive sensing node is detected by the touch capacitive sensor when the fingerprint sensor is not touched, and a difference between the second capacitive sensing quantity and the fourth capacitive sensing quantity is used to determine barycentric location coordinates of the touch object touching the fingerprint sensor.

25. The method of claim 23 or 24, wherein the controller determining the compensation factor for the first capacitive sense node based on the first capacitive sense quantity for the first capacitive sense node and the first capacitive sense quantity for each capacitive sense node in the set of contiguous capacitive sense nodes comprises:

the controller determines a ratio of an average value of first capacitance induction quantities of the capacitance induction nodes in the adjacent capacitance induction node set to the first capacitance induction quantity of the first capacitance induction node as a compensation coefficient of the first capacitance induction node.

26. The method of claim 25, wherein the controller determining a fourth capacitive sense of the first capacitive sense node based on the compensation factor and the third capacitive sense comprises:

the controller determines the fourth capacitance induction amount as a product of the compensation coefficient and the third capacitance induction amount.

27. The method of claim 21, wherein the controller determines the second capacitance sensing variation of the first capacitance sensing node according to a first capacitance sensing variation of each capacitance sensing node in the set of adjacent capacitance sensing nodes before and after the touch object touch and a first capacitance sensing variation of the first capacitance sensing node before and after the touch object touch, and comprises:

the controller determines a compensation coefficient of each capacitive sensing node in the adjacent capacitive sensing node set according to a first capacitive sensing variation of each capacitive sensing node before and after touch of a touch object and a first capacitive sensing variation of each capacitive sensing node before and after touch of the touch object;

and the controller determines the second capacitance induction variation according to the compensation coefficient and the first capacitance induction variation of the first capacitance induction node before and after the touch of the touch object.

28. The method of claim 27, further comprising:

the controller determines a third capacitance sensing variation of the first capacitance sensing node before and after the touch;

and the controller determines a fourth capacitance induction variable quantity of the first capacitance induction node according to the compensation coefficient and the third capacitance induction variable quantity.

29. The method of claim 28, wherein the fourth capacitance-induced change is used to determine barycentric location coordinates of the touch object touching the fingerprint recognition sensor.

30. The method of claim 28 or 29, wherein the controller determining the compensation factor for the first capacitive sense node based on the first capacitive sense quantity for the first capacitive sense node and the first capacitive sense quantity for each capacitive sense node in the set of contiguous capacitive sense nodes comprises:

31. The method of claim 30, wherein the controller determining a fourth capacitance sense change of the first capacitance sense node based on the compensation factor and the third capacitance sense change comprises:

the controller determines a product of the compensation coefficient and the third capacitance sensing variation as the fourth capacitance sensing variation.