TWI534691B - Touch control method for a capacitive touch screen and apparatus using thereof - Google Patents

Description

Capacitive screen touch control method and related equipment

The present invention relates to the field of capacitive touch control technologies, and more particularly to a touch control method for a capacitive screen, a capacitive touch device, and a portable electronic device.

The current capacitive touch screen is widely used in portable devices with high sensitivity and support for multi-touch finger. However, due to the use of finger touch, the fingers are relatively thick, so that high precision cannot be achieved. When clicking a relatively small button or writing, it will be inefficient.

In some ultra-high sensitivity capacitive touch solutions of the prior art, a very passive passive pen is supported, and the passive pen tip is close to the real pen, but only the touch position information is sensed when writing, and thus the real handwriting input cannot be realized. In the capacitive touch solution supporting the active capacitive pen, although the real handwriting input can be realized, the cost of the active capacitive pen is high, and the use of the active capacitive pen requires the installation of the battery, and the user experience is poor.

The embodiment of the invention provides a touch control method and related device, which can adjust display information such as a content to be displayed and a writing track of a touch pen according to touch information with pressure information.

An aspect of the invention provides a capacitive touch device, including:

Capacitive sensor

a capacitance detecting circuit connected to the capacitance sensor, the capacitance detecting circuit is configured to output a first signal according to a change in capacitance of the capacitive sensor when the capacitive touch device is touched;

At least one pressure sensor for sensing a pressure generated by a touch of the capacitive touch device;

a pressure detecting circuit connected to the pressure sensor, the pressure detecting circuit is configured to output a second signal according to the sensing result of the pressure sensor;

And a data processing device respectively connected to the capacitance detecting circuit and the pressure detecting circuit, wherein the data processing device is configured to determine touch information with pressure information according to the first signal and the second signal.

The first signal indicates the location of the touch and the second signal indicates the magnitude of the pressure.

The capacitive touch device further includes a display module disposed under the capacitive sensor, and the pressure sensor is disposed between the layer where the capacitive sensor is located and the display module.

Further, the capacitive touch device includes four pressure sensors respectively disposed at four corners of the upper surface of the display module, or respectively disposed on four edges of the upper surface of the display module. midpoint.

The capacitive touch device further includes a protective cover over the capacitive sensor, the pressure sensor being placed between the protective cover and the layer where the capacitive sensor is located.

Further, the capacitive touch device includes four pressure sensors respectively disposed at four corners of the upper surface of the layer where the capacitive sensor is located; or, respectively, placed on the layer where the capacitive sensor is located The midpoint of the four edges of the upper surface.

The capacitive touch device further includes a display module and a casing supporting the display module, and the pressure sensor is disposed between the display module and the casing.

Further, the capacitive touch device includes four of the pressure sensors respectively disposed at four corners between the casing and the display module; or, respectively, placed on the casing and the Displays the midpoint of the four edges between the modules.

The capacitive touch device further includes a protective cover over the layer where the capacitive sensor is located and a casing supporting the protective cover, and the pressure sensor is placed on the protective cover and the casing between.

Further, the capacitive touch device includes four of the pressure sensors respectively disposed at four corners between the protective cover and the casing; or, respectively, placed on the protective cover and The midpoint of the four edges between the enclosures.

The capacitive sensor is configured to sense a touch of the capacitive touch device by the passive touch pen, and the pressure sensor is configured to sense a pressure generated by the touch of the capacitive touch device by the passive touch pen.

The data processing device is further configured to adjust the display information according to the touch information with the pressure information.

The display information includes any one or combination of color depth and size of the content to be displayed.

The display information includes any one or combination of color depth and size of dots on the writing track of the touch pen.

A second aspect of the present invention provides a portable electronic device including the capacitive touch device as described above.

The third party of the present invention provides a touch control method, which includes:

Detecting a change in capacitance of the capacitive sensor caused by a touch on the capacitive screen, and determining a position of the touch according to the detection result;

Sensing a pressure generated by a touch on the capacitive screen, and determining a magnitude of the pressure according to the sensing result;

The touch information with the pressure information is determined according to the position of the touch and the magnitude of the pressure.

The sensing touches the capacitive screen includes:

Inductive finger touch on the capacitive screen based on mutual capacitance detection; or

Inductive passive touch pen touches the capacitive screen in a manner based on self-capacitance detection.

As can be seen from the above technical solutions, a touch control method and related device provided by the embodiments of the present invention have the following advantages: detecting a touch position by capacitive sensing, detecting a pressure of a touch by pressure sensing, combining touch position information and pressure information, The touch information with the pressure information is determined, so that the display information such as the content to be displayed and the writing track of the touch pen is adjusted according to the touch information with the pressure information, thereby improving the user experience and the solution cost is low.

The embodiment of the invention provides a touch control method and related device, which can adjust display information such as a content to be displayed and a writing track of a touch pen according to touch information with pressure information.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The details are described below separately.

Please refer to FIG. 1 , which is a schematic structural diagram of a capacitive touch device 100 according to an embodiment of the present invention. The capacitive touch device 100 may include:

Capacitive sensor 1012,

a capacitance detecting circuit 103 connected to the capacitive sensor 1012, the capacitance detecting circuit 103 is configured to output a first according to a change in capacitance of the capacitive sensor 1012 when the capacitive touch device 100 is touched Signal

At least one pressure sensor 104, the pressure sensor 104 is configured to sense a pressure generated by a touch of the capacitive touch device 100;

a pressure detecting circuit 105 connected to the pressure sensor 104, the pressure detecting circuit 105 is configured to output a second signal according to the sensing result of the pressure sensor 104;

The data processing device 106 is connected to the capacitance detecting circuit 103 and the pressure detecting circuit 105, and the data processing device 106 is configured to determine touch information with pressure information according to the first signal and the second signal.

The first signal indicates the location of the touch, and the second signal indicates the magnitude of the pressure. The data processing device 106 determines the touch information with the pressure information according to the touched location information and the pressure information.

In the embodiment of the present invention, the capacitive sensor 1012 is disposed in a capacitive screen, and the capacitive touch screen is also called a capacitive touch screen. The touch object of the touch capacitive touch device 100 (ie, the touch capacitive screen) may be a finger. Or an active touch pen or a passive touch pen, which can be considered as an object that is designed like a pen but does not contain a power source and a circuit and has a certain conductivity;

As can be seen from the above, a capacitive touch device 100 according to an embodiment of the present invention can detect a touch position by capacitive sensing, detect a pressure of a touch by pressure sensing, and combine touch position information and pressure information to determine a touch with pressure information. The information is used to adjust the display information such as the content to be displayed and the writing track of the touch pen according to the touch information with the pressure information, thereby improving the user experience and the solution cost is low.

In order to better understand the technical solution of the present invention, the following describes the capacitive touch device provided by the present invention in several specific embodiments: Embodiment 1:

Referring to FIG. 2a and FIG. 2b together, FIG. 2a is a schematic diagram of a first embodiment of a capacitive touch device according to an embodiment of the present invention, and FIG. 2b is a first embodiment of a capacitive touch device according to an embodiment of the present invention. Sectional view;

In the embodiment of the present invention, the capacitive touch device further includes a display module 102 disposed under the capacitive sensor 1012, and the display module 102 can be a liquid crystal display module LCM (LCD Module, Liquid Crystal Display) In the first embodiment, the pressure sensor 104 is placed between the layer where the capacitive sensor 1012 is located and the display module 102. In addition, in the first embodiment, the capacitor The touch device includes four of the pressure sensors 104, which can be respectively placed at four corners of the upper surface of the display module 102, that is, four disposed on the lower surface of the layer of the capacitive sensor 1012. The corners are labeled with a solid circle in Fig. 2a for convenience of understanding; in some embodiments, four of the pressure sensors 104 may be respectively placed on the upper edges of the display module 102. The midpoint, that is, the midpoint of the four edges of the lower surface of the layer where the capacitive sensor 1012 is located, is indicated by a dashed circle in Fig. 2a for ease of understanding.

In this embodiment, as shown in FIG. 2a, when a touch object (such as a passive touch pen) touches the capacitive touch device (capacitive screen), some pressure is generally applied to the surface of the capacitive screen, and then the capacitive sensing is performed. The capacitance of the device 1012 changes; the pressure is transmitted to the lower pressure sensor 104 through the capacitive screen, so that the pressure change caused by the passive touch pen touching the capacitive touch device can be sensed, thereby obtaining pressure information. Touch information; when the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low. The capacitive sensor 1012 can be used to sense the touch of the capacitive touch device by the passive touch pen. The pressure sensor 104 can be used to sense the pressure generated by the passive touch pen on the touch of the capacitive touch device.

It should be noted that, in the first embodiment of the present invention, the data processing device 106 may be further configured to adjust display information according to the touch information with pressure information; in some embodiments, the display information may be Including any one or combination of color depth and size of the content to be displayed, in some embodiments, the display information may include any one or combination of color depth and size of dots on the writing track of the touch pen. .

In the first embodiment of the present invention, the capacitive touch device is provided with four pressure sensors 104, which can make the pressure information more abundant and accurate. In some embodiments with higher precision, The pressure sensor 104 is disposed in other positions, or the pressure sensor 104 is disposed at other positions according to actual conditions, which is not specifically limited by the present invention.

It can be seen from the above that a capacitive touch device provided by the embodiment of the present invention can detect the touch position by capacitive sensing, can detect the pressure of the touch by pressure sensing, and combine the touch position information and the pressure information to determine the touch information with pressure information. Therefore, according to the touch information, the display information such as the content to be displayed and the writing track of the touch pen is adjusted to improve the user experience, and if the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low.

Embodiment 2:

Referring to FIG. 3a and FIG. 3b together, FIG. 3a is a schematic diagram of a second embodiment of a capacitive touch device according to an embodiment of the present invention, and FIG. 3b is a second embodiment of a capacitive touch device according to an embodiment of the present invention. Schematic diagram

In the embodiment of the present invention, the capacitive touch device may further include a protective cover 1011 disposed above the capacitive sensor 1012. In the second embodiment, the pressure sensor 104 may be placed on the protection. The cover 1011 and the layer of the capacitive sensor 1012 are located; in addition, in this embodiment, the capacitive touch device includes four of the pressure sensors 104, which can be respectively placed on the capacitive sensing The four corners of the upper surface of the layer where the device 1012 is located, that is, the four corners of the lower surface of the protective cover 1011, are conveniently indicated in Fig. 3a by solid circles; in some embodiments The four pressure sensors 104 can also be respectively placed at the midpoints of the four edges of the upper surface of the capacitive sensor 1012, that is, in the four edges of the lower surface of the protective cover 1011. Points, for ease of understanding, are marked with a dashed circle in Figure 3a.

The capacitive screen is also a touch screen module, and generally includes a protective cover 1011 and a capacitive sensor 1012. The more common touch screen modules have a GFF structure, a GG structure, a GF structure, and the like. The surface G refers to a protective cover 1011 of a glass structure. In the touch screen module, the protective cover 1011 and the capacitive sensor 1012 are glued together. In addition, there is also an OGS (monolithic glass) structure, that is, the capacitive sensor 1012 is formed under the protective cover 1011, and the protective cover 1011 and the capacitive sensor 1012 form an inseparable whole structure.

In some embodiments, the protective cover 1011 and the capacitive sensor 1012 are completely separated, that is, the protective cover 1011 and the capacitive sensor 1012 may not be attached together. In such a scenario, the pressure sensor 104 can be placed between the protective cover 1011 and the layer in which the capacitive sensor 1012 is located, ie, as shown in Figures 3a and 3b. The structure diagram of the capacitive touch device in the second. For example, an In-cell (in-line touch panel) structure, the capacitive sensor 1012 and the display module 102 are fabricated together, as shown in FIG. 3c, and FIG. 3c is a capacitive touch provided by an embodiment of the present invention. Another cross-sectional view of the control device includes a protective cover 1011 disposed above the display module 102 of the capacitive sensor 1012. The protective cover 1011 and the upper surface of the display module 102 are separated by a certain distance, and the pressure sensor 104 can be placed between the protective cover 1011 and the display module 102.

In the embodiment of the present invention, the capacitive sensor 1012 is connected to the capacitance detecting circuit 103, so that the capacitive touch information of the touch object (such as a passive touch pen) can be obtained instantly, and the current sensor 104 can obtain the current Pressure touch information, the capacitive touch information can provide a touch position, and the pressure touch information provides touch pressure, and the data processing device 106, such as a Micro Control Unit (MCU), combines the two. Information can be used to output touch information with pressure information. Moreover, when the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low. The capacitive sensor 1012 can be used to sense a touch of the capacitive touch device by the passive touch pen. The sensor 104 can be used to sense the pressure generated by the passive touch pen to the touch of the capacitive touch device.

It should be noted that, in the second embodiment of the present invention, the data processing device 106 may be further configured to adjust display information according to the touch information with the pressure information; in some embodiments, the display information may be Including any one or combination of color depth and size of the content to be displayed, in some embodiments, the display information may include any one or combination of color depth and size of dots on the writing track of the touch pen. .

In the second embodiment of the present invention, the capacitive touch device is provided with four pressure sensors 104, which can make the pressure information more abundant and accurate. In some embodiments with higher precision, The pressure sensor 104 is disposed in other positions, or the pressure sensor 104 is disposed at other positions according to actual conditions, which is not specifically limited by the present invention.

It can be seen from the above that a capacitive touch device according to an embodiment of the present invention can detect a touch position by capacitive sensing, detect a pressure of a touch by pressure sensing, and combine touch position information and pressure information to determine touch information with pressure information. Therefore, according to the touch information, the display information such as the content to be displayed and the writing track of the touch pen is adjusted to improve the user experience, and if the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low.

Embodiment 3:

Referring to FIG. 4a and FIG. 4b together, FIG. 4a is a schematic diagram of a third embodiment of a capacitive touch device according to an embodiment of the present invention, and FIG. 4b is a schematic embodiment of a capacitive touch device according to an embodiment of the present invention. Sectional view of the three;

In the embodiment of the present invention, the capacitive touch device may further include a display module 102 and a casing 107 supporting the display module. In the third embodiment, the pressure sensor 104 is placed on the display module. Between the group 102 and the casing 107; in addition, in this embodiment, the capacitive touch device includes four of the pressure sensors 104, which can be respectively placed in the casing 107 and the display mode The four corners between the groups are indicated by solid circles in Fig. 4a for ease of understanding; or, in some embodiments, four of the pressure sensors 104 may be placed in the casing 107, respectively. The midpoints of the four edges between the display module 102 and the display module 102 are indicated by a dashed circle in FIG. 4a for ease of understanding.

Since there are some cases where it is not suitable to provide the pressure sensor 104 between the capacitive screen and the display module 102, the pressure sense can be obtained in the third embodiment as shown in FIGS. 4a and 4b. The detector 104 is placed between the display module 102 and the casing 107 supporting the display module 102, and the pressure touched by a touch object (such as a passive touch pen) is transmitted to the display through the touch screen. The module 102 is transferred by the display module 102 to the lower pressure sensor 104. When the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low. The capacitive sensor 1012 can be used to sense the touch of the capacitive touch device by the passive touch pen. The detector 104 can be used to sense the pressure generated by the passive touch pen to the touch of the capacitive touch device.

It should be noted that, in the third embodiment of the present invention, the data processing device 106 may be further configured to adjust the display information according to the touch information with the pressure information; in some embodiments, the display information may be Including any one or combination of color depth and size of the content to be displayed, in some embodiments, the display information may include any one or combination of color depth and size of dots on the writing track of the touch pen. .

In the third embodiment of the present invention, the capacitive touch device is provided with four pressure sensors 104, which can make the pressure information more abundant and accurate. In some embodiments with higher precision, The pressure sensor 104 is disposed in other positions, or the pressure sensor 104 is disposed at other positions according to actual conditions, which is not specifically limited by the present invention.

It can be seen from the above that a capacitive touch device provided by the embodiment of the present invention can detect the touch position by capacitive sensing, can detect the pressure of the touch by pressure sensing, and combine the touch position information and the pressure information to determine the touch information with pressure information. Therefore, according to the touch information, the display information such as the content to be displayed and the writing track of the touch pen is adjusted to improve the user experience, and if the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low.

Embodiment 4:

Referring to FIG. 5a and FIG. 5b together, FIG. 5a is a schematic diagram of a fourth embodiment of a capacitive touch device according to an embodiment of the present invention, and FIG. 5b is a fourth embodiment of a capacitive touch device according to an embodiment of the present invention. Sectional view;

In the embodiment of the present invention, the capacitive touch device may further include a protective cover 1011 above the layer where the capacitive sensor 1012 is located and a casing 107 supporting the protective cover 1011. In the fourth embodiment, the pressure The sensor 104 is placed between the protective cover 1011 and the casing 107. In addition, in this embodiment, the capacitive touch device may include four of the pressure sensors 104, which may be respectively placed on the casing 107 to support the four between the protective cover 1011 and the casing. Corners, which are indicated by solid circles in Figure 5a for ease of understanding; or, in some embodiments, four of the pressure sensors 104 may be placed on the protective cover 1011 and the housing, respectively. The midpoint of the four edges between them is indicated by a dotted circle in Figure 5a for ease of understanding.

In the fourth embodiment shown in FIGS. 5a and 5b, the pressure sensor 104 is placed between the protective cover 1011 and the casing 107 supporting the protective cover 1011, and the object (such as a passive touch pen) is touched. The pressure of the touch is transmitted to the lower pressure sensor 104 through the protective cover 1011. When the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low. The capacitive sensor 1012 can be used to sense the touch of the capacitive touch device by the passive touch pen. The detector 104 can be used to sense the pressure generated by the passive touch pen to the touch of the capacitive touch device.

It should be noted that, in the fourth embodiment of the present invention, the data processing device 106 may be further configured to adjust display information according to the touch information with pressure information; in some embodiments, The display information may include any one or combination of color depth and size of the content to be displayed. In some embodiments, the display information may include color depth and size of dots on the writing track of the touch pen. Any one or combination.

In the embodiment 4 provided by the embodiment of the present invention, the capacitive touch device is provided with four pressure sensors 104, which can make the pressure information more abundant and accurate, and in some embodiments with higher precision, The pressure sensor 104 is disposed in other positions, or the pressure sensor 104 is disposed at other positions according to actual conditions, which is not specifically limited by the present invention.

It can be seen from the above that a capacitive touch device provided by the embodiment of the present invention can detect the touch position by capacitive sensing, can detect the pressure of the touch by pressure sensing, and combine the touch position information and the pressure information to determine the touch information with pressure information. Therefore, according to the touch information, the display information such as the content to be displayed and the writing track of the touch pen is adjusted to improve the user experience, and if the touch object is a passive touch pen, the battery is not required to be installed, and the cost is low.

In order to facilitate the implementation of the capacitive touch device provided by the embodiment of the present invention, the embodiment of the present invention further provides a capacitive touch control method for the capacitive touch device and a portable electronic device including the capacitive touch device. device. The meaning of the noun is the same as that in the above capacitive touch device. For details of implementation, refer to the description in the embodiment of the capacitive touch device.

Please refer to FIG. 6 , which is a flowchart of a touch screen touch control method according to an embodiment of the present invention. The capacitive touch control method is applied to the capacitive touch device provided by the foregoing embodiment, and the method may include:

S601. Detecting a change in capacitance of the capacitive sensor caused by a touch on the capacitive screen;

S602. Determine a location of the touch according to the detection result.

S603, sensing a pressure generated by a touch on the capacitive screen;

S604. Determine a magnitude of the pressure according to the sensing result.

S605. Determine touch information with pressure information according to the location of the touch and the magnitude of the pressure.

In the embodiment of the present invention, the touch object of the touch capacitive touch device (ie, the touch capacitive screen) may be a passive touch pen, and the passive touch pen may be considered as a design pen, but does not contain a power source and a circuit, and has a certain An electrically conductive object; for example, the passive touch pen can be designed to be small with a conductive tip.

Further, the sensing the touch on the capacitive screen (step S603) may specifically include:

Inductive finger touch on the capacitive screen based on mutual capacitance detection; or

Inductive passive touch pen touches the capacitive screen in a manner based on self-capacitance detection.

That is to say, the capacitive touch device has two working modes, including a normal mode and a high sensitivity mode. It can be understood that the mutual capacitance mode can be adopted in the normal mode, and the self-capacitance mode can be adopted in the high sensitivity mode. .

The capacitive sensor 1012 in the capacitive touch device can sense the touch of the capacitive touch device by the passive touch pen, and the pressure sense in the capacitive touch device. The detector 104 can be used to sense the pressure generated by the passive touch pen to the touch of the capacitive touch device.

It can be seen from the above that the capacitive touch control method provided by the embodiment of the present invention detects the touch position by capacitive sensing, can detect the pressure of the touch by pressure sensing, and combines the touch position information and the pressure information to determine the touch with pressure information. The information is used to adjust the display information such as the content to be displayed and the writing track of the touch pen according to the touch information, thereby improving the user experience, and when the touch object is a passive touch pen, the passive touch pen does not need to be installed with a battery, and the cost is low.

In order to better understand the implementation of the capacitive touch control method of the present invention, the following describes the capacitive touch control method provided by the present invention in a specific embodiment;

Please refer to FIG. 7 , which is a flowchart of a method for controlling a touch screen of a capacitive screen according to an embodiment of the present invention. The method may be: a capacitive touch device, and the method may include:

S701. Detect a change in capacitance of the capacitive sensor caused by a touch on the capacitive screen;

S702. Determine a location of the touch according to the detection result.

That is, the capacitive touch device acquires and detects capacitive touch information, and determines a position touched by the touch object;

S703, sensing a pressure generated by a touch on the capacitive screen;

Wherein, in a manner based on mutual capacitance detection, the pressure generated by the touch of the capacitive screen by the finger is sensed; or, in a manner based on the self-capacitance detection, the touch of the capacitive touch screen by the passive touch pen is induced. pressure.

In some applications, if a passive touch pen touch capacitive screen is used, when in a self-capacitance detection based manner, the capacitive sensor 1012 in the capacitive touch device can sense a passive touch pen to the capacitive touch The pressure sensor 104 in the capacitive touch device can be used to sense the pressure generated by the passive touch pen on the touch of the capacitive touch device.

S704. Determine a magnitude of the pressure according to the sensing result.

That is, the capacitive touch device acquires and detects the pressure touch information, and determines the magnitude of the pressure generated by the touch object on the touch of the capacitive touch device;

S705. Determine touch information with pressure information according to the location of the touch and the magnitude of the pressure;

The sampling rate of capacitive touch information and pressure touch information is different. Therefore, it is necessary to synchronize them, combine the pressure touch information and position information at the appropriate time point, and synchronize them. There are various methods for synchronization. It can be determined according to the actual situation, and is not specifically limited here;

In this embodiment, the method of filter interpolation can be used, and the difference between the pressure information and the pressure information can be synchronized by using the capacitive touch information as the sampling frequency, or the sampling period and the pressure touch information of the capacitive touch information can be set. The sampling period is in integer multiple relationship. The final output result is based on the faster sampling rate. The slower sampling data will also achieve faster sampling frequency after interpolation, so as to achieve synchronization, or in circuit design. The capacitive touch information and the pressure touch information use the same clock to achieve synchronization; in addition, the pressure change is slower than the capacitive touch information (ie, the touch position), so the pressure touch information can be performed. Some data filtering and smoothing processing can produce a better experience.

S706: Adjust display information according to the touch information with pressure information;

After obtaining the touch information with the pressure information, the touch information may be used to adjust the display information (ie, the stroke); in some embodiments, the display information may include the color depth and size of the content to be displayed. Any one or combination of the above, in some embodiments, the display information may include any one or combination of color depth and size of dots on the writing track of the touch pen. In other words, the touch information can be used to adjust the stroke of a certain point. After the stroke adjustment of a certain point is completed, the writing track or the writing brush trace can be adjusted according to the touch information, that is, adjusting a pile of points. Strokes.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the steps of the above-mentioned touch control method can refer to the corresponding process in the foregoing capacitive touch device embodiment, and details are not described herein again. .

It can be seen from the above that the capacitive touch control method provided by the embodiment of the present invention detects the touch position by capacitive sensing, can detect the pressure of the touch by pressure sensing, and combines the touch position information and the pressure information to determine the touch with pressure information. The information is used to adjust the display information such as the content to be displayed and the writing track of the touch pen according to the touch information, thereby improving the user experience, and when the touch object is a passive touch pen, the passive touch pen does not need to be installed with a battery, and the cost is low.

The embodiment of the present invention further provides a portable electronic device 200. Referring to FIG. 8 , a schematic block diagram of a portable electronic device 200 according to an embodiment of the present invention is provided. The device 200 includes the capacitive touch device 100 as described in the above embodiment, that is, the capacitive touch device 100 provided in the above embodiment may be applied to the portable electronic device 200.

The portable electronic device 200 can also include a display. In some embodiments, the capacitive touch device 100 is disposed above the display. In some embodiments, the capacitive touch device 100 and the The display can be arranged in an integrated manner, that is, the two are made as a whole, and this time is not specifically limited.

The portable electronic device 200 can be a mobile phone or a tablet computer or other portable electronic device, which is not specifically limited herein.

A person skilled in the art can clearly understand that the specific working process of the capacitive touch device in the portable electronic device 200 described above can be referred to the corresponding process in the foregoing capacitive touch device embodiment for the convenience and brevity of the description. , will not repeat them here.

As described above, the portable electronic device 200 of the embodiment of the present invention includes the capacitive touch device 100 as described in the above embodiment. The capacitive touch device 100 can detect the touch position through capacitive sensing and detect by pressure sensing. The pressure of the touch, combined with the touch position information and the pressure information, determines the touch information with the pressure information, thereby adjusting the display information such as the content to be displayed and the writing track of the touch pen according to the touch information, thereby improving the user experience and touching When the object is a passive touch pen, the passive touch pen does not need to be installed with a battery, and the cost is low.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific operation process of the touch control method and the portable electronic device described above can be referred to the corresponding process in the foregoing capacitive touch device embodiment. This will not be repeated here.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integration into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of a hardware or a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such an understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drive, removable hard disk, read-only memory (ROM), random access memory (RAM, Random Access Memory), disk or optical disk, and the like. The medium of the code.

The touch control method and related equipment provided by the present invention are described in detail above. For those skilled in the art, according to the idea of the embodiment of the present invention, there are some changes in the specific implementation manner and application scope. In summary, the content of the specification should not be construed as limiting the invention.

100. . . Capacitive touch device

1012. . . Capacitive sensor

103. . . Capacitance detection circuit

104. . . Pressure Sensor

105. . . Pressure detection circuit

106. . . Data processing equipment

108. . . Passive touch pen

1011. . . Protective cover

102. . . Display module

107. . . cabinet

S601. . . Detecting changes in the capacitance of the capacitive sensor caused by the touch on the capacitive screen

S602. . . Determine the location of the touch based on the detection result

S603. . . Inductive pressure on the touch of the capacitive screen surface

S604. . . Determine the pressure based on the sensing results

S605. . . Determine touch messages with pressure messages based on the location of the touch and the amount of pressure

S701. . . Detecting changes in the capacitance of the capacitive sensor caused by the touch on the capacitive screen

S702. . . Determine the location of the touch based on the detection result

S703. . . Inductive pressure on the touch of the capacitive screen surface

S704. . . Determine the pressure based on the sensing results

S705. . . Determine touch messages with pressure messages based on the location of the touch and the amount of pressure

S706. . . Adjust display messages based on touch messages with pressure messages

1 is a schematic structural block diagram of a capacitive touch device according to an embodiment of the present invention; FIG. 2a is a schematic structural diagram of a capacitive touch device according to an embodiment of the present invention; FIG. 3 is a cross-sectional view of a capacitive touch device according to an embodiment of the present invention; FIG. 3B is another cross-sectional view of a capacitive touch device according to an embodiment of the present invention; 3C is another cross-sectional view of a capacitive touch device according to an embodiment of the present invention; FIG. 4a is another schematic structural diagram of a capacitive touch device according to an embodiment of the present invention; FIG. 4b is a capacitor according to an embodiment of the present invention; Another cross-sectional view of a capacitive touch device according to an embodiment of the present invention; FIG. 5b is another cross-sectional view of a capacitive touch device according to an embodiment of the present invention; 6 is a flowchart of a touch control method according to an embodiment of the present invention; FIG. 7 is another flowchart of a touch control method according to an embodiment of the present invention; FIG. 8 is an implementation of the present invention. A schematic block diagram of a structure of a portable electronic device is provided.

100. . . Capacitive touch device

1012. . . Capacitive sensor

103. . . Capacitance detection circuit

104. . . Pressure Sensor

105. . . Pressure detection circuit

106. . . Data processing equipment

Claims (16)

A capacitive touch device includes: a capacitive sensor; a capacitance detecting circuit connected to the capacitive sensor, wherein the capacitance detecting circuit is configured to be used according to the capacitive sensor when the capacitive touch device is touched a change in capacitance to output a first signal; at least one pressure sensor for sensing a pressure generated by a touch of the capacitive touch device; a pressure connected to the pressure sensor a detection circuit, the pressure detecting circuit is configured to output a second signal according to the sensing result of the pressure sensor; a data processing device respectively connected to the capacitance detecting circuit and the pressure detecting circuit, the data processing The device is configured to determine touch information with pressure information according to the first signal and the second signal; and display module disposed under the capacitance sensor, wherein the pressure sensor is disposed on a surface of the display module . According to the device of claim 1, the first signal indicates the location of the touch, and the second signal indicates the magnitude of the pressure. According to the device of claim 1, the pressure sensor is placed between the layer where the capacitive sensor is located and the display module. According to the device of claim 3, the capacitive touch device includes four pressure sensors respectively disposed at four corners of the upper surface of the display module; or, respectively, placed on the display module The midpoint of the four edges of the upper surface. According to the device of claim 1, the capacitive touch device further includes a display module and a casing supporting the display module, wherein the pressure sensor is placed in the display module and the casing between. According to the device of claim 5, the capacitive touch device includes four pressure sensors respectively disposed at four corners between the casing and the display module; or, respectively, placed in the The midpoint of the four edges between the casing and the display module. According to the device of claim 1, the capacitive sensor is configured to sense a touch of the capacitive touch device by the passive touch pen, and the pressure sensor is configured to sense a passive touch pen to the capacitive touch device. The pressure generated by the touch. According to the device of claim 1, the data processing device is further configured to adjust the display information according to the touch information with the pressure information. According to the device of claim 8, the display information includes any one or a combination of color depth and size of the content to be displayed. The device according to claim 8, wherein the display information includes any one or a combination of a color depth and a size of a point on a writing track of the touch pen. A display device suitable for use in a portable electronic device, comprising the capacitive touch device of any one of claims 1 to 10. A capacitive touch control method includes: detecting a change in a capacitance of a capacitive sensor caused by a touch on a capacitive screen, acquiring capacitive touch information, determining a position of the touch, and sensing a pressure generated by a touch on the capacitive screen , get pressure touch Information, determining the magnitude of the pressure; and synchronizing capacitive touch information and pressure touch information, and determining touch information with pressure information according to the position of the touch and the magnitude of the pressure. According to the method of claim 12, the sensing the touch on the capacitive screen comprises: sensing a touch of the capacitive screen by the finger based on the mutual capacitance detection; or inductively passively based on the self-capacitance detection Touch the pen to touch the capacitive screen. According to the method of claim 12, the synchronizing comprises: performing post-difference sampling on the pressure touch information by using the capacitive touch information as the sampling frequency. According to the method of claim 12, the synchronizing comprises: interpolating the sampling frequency in the capacitive touch information and the pressure touch information. The method of claim 12, further comprising: performing data filtering and smoothing on the pressure touch information.