CN104881174B - A kind of method and device of dynamic adjustment sensitivity of touch screen - Google Patents

Abstract

The embodiment of the present invention discloses a method and device for dynamically adjusting the sensitivity of the touch screen, wherein the method for dynamically adjusting the sensitivity of the touch screen includes: acquiring the capacitance value of the touch area in the touch screen; When the preset capacitance threshold is close, the touch sensitivity of the touch area is adjusted. Adopting the technical solution provided by the embodiments of the present invention can reduce the probability of poor touch and oversensitivity of the touch screen, so that the touch screen that can pass the test but is close to the test threshold responds more appropriately to the touch operation, and improves the user experience of using the touch screen.

Description

A method and device for dynamically adjusting touch screen sensitivity

technical field

The invention relates to the field of touch screens, in particular to a method and device for dynamically adjusting the sensitivity of the touch screen.

Background technique

A touch screen is an inductive information input device that can receive input signals such as contacts, and is widely used in various human-computer interaction devices, such as mobile phones, tablet computers and other terminals. When a finger touches the surface of the screen, the touch screen recognizes the touch and recognizes touch actions and gestures. The widely used capacitive touch screen not only has a series of advantages of the touch screen, but also has multi-touch and complex gesture recognition capabilities, which greatly expands the application range of the touch screen and greatly improves the user experience.

The capacitive touch screen makes the finger and the surface of the touch screen form a coupling capacitance through the electric field of the human body. The change in capacitance value generated during touch determines the position and direction of movement of the touch, and the capacitance parameters determine the use effect of the touch screen. In the production process of mobile terminals, although the touch screens used in mobile terminals are also tested for capacitance parameters, due to the large number of touch screens used, some touch screens that can pass the test but are close to the lower limit of the test will also be used and installed. Therefore, when these touch screens close to the lower limit of the test are used, poor touch may occur probabilistically, which affects the normal use of users.

Contents of the invention

In view of this, the embodiments of the present invention propose a method and device for dynamically adjusting the sensitivity of the touch screen, so as to avoid the problem of poor touch on the touch screen.

In a first aspect, an embodiment of the present invention provides a method for dynamically adjusting the sensitivity of a touch screen, the method comprising:

Obtain the capacitance value of the touch area in the touch screen;

When the capacitance value is close to a preset capacitance threshold value, the touch sensitivity of the touch area is adjusted.

In a second aspect, an embodiment of the present invention provides a device for dynamically adjusting the sensitivity of a touch screen, the device comprising:

A capacitance value acquisition unit, configured to acquire the capacitance value of the touch area in the touch screen;

A touch sensitivity adjusting unit, configured to adjust the touch sensitivity of the touch area when the capacitance value is close to a preset capacitance threshold value.

By adopting the technical solution provided by the embodiment of the present invention, the touch threshold of the touch screen is adjusted when the acquired capacitance value of the touch area is close to the preset capacitance threshold value. The possibility of poor touch and oversensitivity of the touch screen can be reduced, so that the touch screen that can pass the test but is close to the test threshold has a more appropriate response to the touch operation, and improves the user experience of using the touch screen.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a flowchart of a method for dynamically adjusting the sensitivity of a touch screen provided by the first embodiment of the present invention;

Fig. 2 is a flowchart of a method for dynamically adjusting the sensitivity of a touch screen provided by the second embodiment of the present invention;

Fig. 3 is a flowchart of a method for dynamically adjusting the sensitivity of a touch screen provided by the third embodiment of the present invention;

Fig. 4 is a flowchart of a method for dynamically adjusting the sensitivity of a touch screen provided by the fourth embodiment of the present invention;

Fig. 5 is a flowchart of a method for dynamically adjusting the sensitivity of a touch screen provided by the fifth embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus for dynamically adjusting sensitivity of a touch screen provided by a sixth embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

Figure 1 shows a first embodiment of the invention.

Figure 1 is a schematic flowchart of a method for dynamically adjusting the sensitivity of the touch screen provided by the first embodiment of the present invention. The method of this embodiment can be executed by a device for dynamically adjusting the sensitivity of the touch screen, which can be implemented by means of hardware and/or software Realized, and generally can be integrated in the mobile communication terminal.

The method for dynamically adjusting the sensitivity of the touch screen includes:

S101. Acquire a capacitance value of a touch area in a touch screen.

Capacitive touch screens use capacitance data to characterize touch characteristics. The accuracy of capacitance detection is directly related to the accuracy of touch screen positioning. The excitation source is applied to the two poles of the capacitance to be measured, and the capacitance value to be measured is converted into other physical quantities such as voltage, current frequency, and pulse width to detect the capacitance value. The capacitance of the touch area in the touch screen can be detected by using the switch capacitor equivalent impedance measurement method or the charge detection method of charging and discharging at a fixed frequency to obtain the capacitance value of the touch area in the touch screen.

S102. When the capacitance value is close to a preset capacitance threshold value, adjust the touch sensitivity of the touch area.

To judge whether the touch screen is touched, it needs to compare the measured value with a preset threshold value. If the capacitance value measured in step S101 is too close to the preset threshold value, two situations will occur in this area. Unless the finger is pressed very hard, the touch screen event may be difficult to be detected, and the area is prone to insensitivity; or when the user's finger has not touched the touch screen, the touch event may be detected by mistake. This area is prone to hyperresponsiveness.

Since the threshold value should be determined according to the capacitance values of all different areas on the touch screen, and the threshold value cannot be adjusted because the capacitance value of a certain area or a certain point is greatly different from the capacitance values of other areas. Therefore, in order to enable the touch screen to effectively avoid the above-mentioned situation, it is necessary to adjust the touch sensitivity of the area where the capacitance value is close to the preset capacitance threshold value, so that the capacitance value is consistent with the preset capacitance threshold value. Touch areas close to the limit work fine.

In the actual mobile phone generation and assembly process, after obtaining the capacitance value of the touch area in the touch screen, the obtained capacitance value of the touch area will be compared with a preset threshold value range, when the obtained touch area When the capacitance value does not belong to the preset threshold value range, the detected touch screen is a substandard product, which cannot meet the requirements of the product and cannot be used for the assembly of the mobile terminal.

In the embodiment of the present invention, by acquiring the capacitance value of the touch area in the touch screen, and comparing the capacitance value of the touch area with a preset threshold value, when the capacitance value and the preset capacitance threshold When the value is close, adjust the touch sensitivity of the touch area. The possibility of poor touch and oversensitivity of the touch screen can be reduced, so that the touch screen that can pass the test but is close to the test threshold has a more appropriate response to the touch operation, and improves the user experience of using the touch screen.

Figure 2 shows a second embodiment of the invention.

Fig. 2 is a schematic flow chart of the method for dynamically adjusting the sensitivity of the touch screen provided by the second embodiment of the present invention. The embodiment of the present invention is based on the method for dynamically adjusting the sensitivity of the touch screen provided by the first embodiment of the present invention. Further, the preset capacitance threshold value is divided into a capacitance upper limit value and a capacitance lower limit value, and when the capacitance value is close to the preset capacitance threshold value, the touch The touch sensitivity of the area is specifically optimized as follows: when the capacitance value is close to the capacitance upper limit value, reduce the touch sensitivity of the touch area; when the capacitance value is close to the capacitance lower limit value , increase the touch sensitivity of the touch area.

Referring to Fig. 2, the method for dynamically adjusting the sensitivity of the touch screen includes:

Step S201, acquiring the capacitance value of the touch area in the touch screen.

Step S202, when the capacitance value is close to the capacitance upper limit value, reduce the touch sensitivity of the touch area; and when the capacitance value is close to the capacitance lower limit value, increase the The touch sensitivity of the touch area.

The preset capacitance threshold is divided into a capacitance upper limit and a capacitance lower limit. When the acquired capacitance value of the touch area falls within the preset threshold range, it can be considered that the detected touch screen is a qualified product and can be used normally. When the capacitance value of the touch area is close to the upper limit value, when the user's finger has not touched the touch screen, the touch event may be detected by mistake, and the reaction of this area is prone to be too sensitive. Therefore, it is necessary to reduce the capacitance of the touch area. Touch sensitivity to enable the touch area to work properly. In the same way, when the capacitance value of the touch area is close to the lower limit value of the capacitance, it may be difficult to detect the event of touching the screen easily, and the situation of insensitive reaction in this area may easily occur, so it is necessary to improve the touch The touch sensitivity of the area to avoid the situation where the area is not responsive.

In the embodiment of the present invention, the upper limit value of the capacitance and the lower limit value of the capacitance may be set as 200 pf and 150 pf respectively. After the capacitance value of the touch area acquired according to step S201 is compared with the upper limit value and the lower limit value of the capacitance, it is determined whether to reduce or increase the touch sensitivity of the touch area according to the comparison result.

In the embodiment of the present invention, the preset capacitance threshold value is divided into a capacitance upper limit value and a capacitance lower limit value, and when the capacitance value is close to the preset capacitance threshold value, the The touch sensitivity of the touch area is specifically optimized as follows: when the capacitance value is close to the capacitance upper limit, reduce the touch sensitivity of the touch area; when the capacitance value is close to the capacitance lower limit When the value is close, the touch sensitivity of the touch area is increased. The touch sensitivity of the touch area can be adjusted according to different situations according to the obtained capacitance value of the touch area in the touch screen, so that the touch screen responds more appropriately to the touch operation and improves the user experience of using the touch screen.

Figure 3 shows a third embodiment of the invention.

FIG. 3 is a schematic flow chart of a method for dynamically adjusting sensitivity of a touch screen provided by a third embodiment of the present invention. The embodiment of the present invention is based on the method for dynamically adjusting sensitivity of a touch screen provided by the second embodiment of the present invention. Further, when the capacitance value is close to the capacitance upper limit value, reducing the touch sensitivity of the touch area is specifically optimized as: when the capacitance value is close to the capacitance upper limit value When approaching, increase the touch threshold of the touch area, so as to recognize that the touch area is touched when it is detected that the capacitance change value of the touch area is greater than the touch threshold.

Referring to Fig. 3, the method for dynamically adjusting the sensitivity of the touch screen includes:

Step S301, acquiring the capacitance value of the touch area in the touch screen.

Step S302, when the capacitance value is close to the capacitance upper limit value, increase the touch threshold of the touch area, so as to identify when it is detected that the capacitance change value of the touch area is greater than the touch threshold The touch area is touched.

The capacitance threshold value is divided into a capacitance upper limit value and a capacitance lower limit value. The capacitance value of the touch area of the touch screen should be between the upper limit value of the capacitance and the lower limit value of the capacitance. When the user's finger touches the touch screen, the capacitance value of the touch area will change accordingly. If the capacitance value of the touch area of the touch screen is close to the capacitance upper limit value, when the user's finger touches the touch screen, the capacitance change value of the touch area is much larger than that of other touch areas. Wherein, the difference between the capacitance value of the other touch area and the upper limit value of capacitance is relatively large. In this way, when other objects accidentally touch the touch area, the capacitance value of the touch area will change, making the touch area extremely sensitive, and the touch screen event will be easily detected by mistake. In order to avoid the above situation, the mobile terminal will correspondingly increase the touch threshold of the touch area, and only when the capacitance change value of the touch area is greater than the increased touch threshold, the mobile terminal will recognize that the touch area is touched.

In the embodiment of the present invention, when the capacitance value is close to the capacitance upper limit value, the touch threshold of the touch area is increased, so that when it is detected that the capacitance change value of the touch area is greater than the touch threshold It is recognized that the touch area is touched. When the capacitance value is close to the upper limit value of the capacitance, by increasing the touch threshold, the probability of the touch screen being too sensitive can be effectively reduced, and the touch screen event is prevented from being easily detected by mistake, which improves user experience. Touch screen experience.

Fig. 4 shows a fourth embodiment of the invention.

FIG. 4 is a schematic flowchart of a method for dynamically adjusting sensitivity of a touch screen provided by the fourth embodiment of the present invention. The embodiment of the present invention is based on the method for dynamically adjusting sensitivity of the touch screen provided by the second embodiment of the present invention. Further, when the capacitance value is close to the capacitance lower limit value, the touch sensitivity of the touch area is improved, specifically optimized as: when the capacitance value is close to the capacitance lower limit value , reducing the touch threshold of the touch area, so as to recognize that the touch area is touched when it is detected that the capacitance change value of the touch area is greater than the touch threshold.

Referring to Fig. 4, the method for dynamically adjusting the sensitivity of the touch screen includes:

Step S401, acquiring the capacitance value of the touch area in the touch screen.

Step S402, when the capacitance value is close to the capacitance lower limit value, lower the touch threshold of the touch area, so as to identify when it is detected that the capacitance change value of the touch area is greater than the touch threshold The touch area is touched.

If the capacitance value of the touch area of the touch screen is close to the lower limit value of the capacitance, when the user's finger touches the touch screen, the capacitance change value of the touch area is much smaller than that of other touch areas, In this way, when the finger touches the touch area, the capacitance value of the touch area will only change slightly, and the touch screen event will be difficult to be detected. In order to avoid the above situation, the mobile terminal will reduce the touch threshold of the touch area accordingly, and as long as the capacitance change value of the touch area is greater than the lowered touch threshold, the mobile terminal will recognize that the touch area is touched.

In the embodiment of the present invention, when the capacitance value is close to the capacitance lower limit value, the touch threshold of the touch area is lowered. When the capacitance value is close to the lower limit value of the capacitance, by increasing the touch threshold, the probability of poor touch on the touch screen can be effectively reduced, and touch screen events are difficult to be detected, which improves the user's ability to use the touch screen. Use experience.

Fig. 5 shows a fifth embodiment of the invention.

FIG. 5 is a schematic flowchart of a method for dynamically adjusting sensitivity of a touch screen provided by a fifth embodiment of the present invention. This embodiment of the present invention is based on the method for dynamically adjusting sensitivity of a touch screen provided by the first embodiment of the present invention. Further, the closeness between the capacitance value and the capacitance threshold value is specifically defined as: when the difference between the capacitance value and the capacitance threshold value is less than or equal to the predetermined value of the capacitance threshold value When the multiple is set, it is determined that the capacitance value is close to the capacitance threshold value.

Step S501, acquiring the capacitance value of the touch area in the touch screen.

Step S502, when the difference between the capacitance value and the capacitance threshold value is less than or equal to a preset multiple of the capacitance threshold value, adjust the touch sensitivity of the touch area.

To judge whether the capacitance value of the touch area is close to the capacitance threshold value, it is necessary to compare the capacitance value of the touch area with the capacitance threshold value. When the difference between the capacitance value of the touch area and the capacitance threshold value is smaller than a preset value, it can be determined that the capacitance value is close to the capacitance threshold value. The preset value can be determined empirically. In this embodiment, a value that is a preset multiple of the capacitance threshold is used as the preset value. For example, the capacitance threshold value is 150pf, and the preset multiple is selected as 0.2, then when the difference between the capacitance value of the touch area and the capacitance threshold value is less than 30, it is considered that the capacitance value of the touch area is equal to the capacitance threshold value. The limit is approached and the touch sensitivity of the touch area is adjusted accordingly.

In the embodiment of the present invention, by determining whether the capacitance value of the touch area is close to the capacitance threshold value according to the capacitance threshold value, different proximity comparison values can be determined according to different capacitance threshold values, so that the touch Whether the regional capacitance value is close to the capacitance threshold value is more accurate, which improves the user experience of using the touch screen.

Fig. 6 shows a sixth embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an apparatus for dynamically adjusting sensitivity of a touch screen provided by a sixth embodiment of the present invention.

It can be seen from FIG. 6 that the device for dynamically adjusting the sensitivity of the touch screen includes: a capacitance value acquisition unit 610 and a touch sensitivity adjustment unit 620 .

Wherein, the capacitance value acquisition unit 610 is used to acquire the capacitance value of the touch area in the touch screen;

The touch sensitivity adjusting unit 620 is configured to adjust the touch sensitivity of the touch area when the capacitance value is close to a preset capacitance threshold value.

In the embodiment of the present invention, when the acquired capacitance value of the touch area is close to the preset capacitance threshold value, the touch threshold of the touch screen is adjusted. The possibility of poor touch and oversensitivity of the touch screen can be reduced, so that the touch screen that can pass the test but is close to the test threshold has a more appropriate response to the touch operation, and improves the user experience of using the touch screen.

Further, the capacitance threshold value includes an upper limit value of capacitance and a lower limit value of capacitance,

The touch sensitivity adjustment unit 620 includes: a touch threshold increase subunit 621 and a touch threshold decrease subunit 622 .

Wherein, the touch threshold increasing subunit 621 is configured to reduce the touch sensitivity of the touch area when the capacitance value is close to the capacitance upper limit;

The touch threshold lowering subunit 622 is configured to increase the touch sensitivity of the touch area when the capacitance value is close to the lower limit value of the capacitance.

Further, the touch threshold raising subunit is specifically used for:

When the capacitance value is close to the capacitance upper limit value, increase the touch threshold of the touch area, so as to identify the touch when it is detected that the capacitance change value of the touch area is greater than the touch threshold area is touched.

Further, the touch threshold lowering subunit is specifically used for:

When the capacitance value is close to the capacitance lower limit value, lower the touch threshold of the touch area, so as to identify the touch when it is detected that the capacitance change value of the touch area is greater than the touch threshold area is touched.

Furthermore, the touch sensitivity adjustment unit 620 includes: a threshold approach determination subunit 623 .

The threshold value approach determination subunit 623 is used to determine the capacitance when the difference between the capacitance value and the capacitance threshold value is less than or equal to a preset multiple of the capacitance threshold value. The value is close to the capacitance threshold.

The above-mentioned device for dynamically adjusting the sensitivity of the touch screen can execute the method for dynamically adjusting the sensitivity of the touch screen provided by the embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art should understand that each module or each step of the present invention described above can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed on a network formed by multiple computing devices. Optionally, they can be implemented with executable program codes of computer devices, so that they can be stored in storage devices and executed by computing devices, or they can be made into individual integrated circuit modules, or a plurality of modules in them Or the steps are fabricated into a single integrated circuit module to realize. As such, the present invention is not limited to any specific combination of hardware and software.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (4)

1. A method for dynamically adjusting touch screen sensitivity, characterized in that, comprising: Obtain the capacitance value of the touch area in the touch screen; Comparing the capacitance value with a capacitance threshold value, wherein the capacitance threshold value includes a capacitance upper limit value and a capacitance lower limit value: When the capacitance value does not belong to the capacitance threshold value range defined by the capacitance upper limit value and the capacitance lower limit value, it is judged that the touch screen is an unqualified product; When the capacitance value belongs to the capacitance threshold value range defined by the capacitance upper limit value and the capacitance lower limit value, it is judged that the touch screen is a qualified product; and When the difference between the capacitance value and the capacitance threshold value is less than or equal to a preset multiple of the capacitance threshold value, determine that the capacitance value is close to the capacitance threshold value; When the capacitance value is close to the preset capacitance threshold value, the touch sensitivity of the touch area is adjusted by adjusting the touch threshold of the touch area. 2. The method of claim 1, wherein, The adjusting the touch sensitivity of the touch area by adjusting the touch threshold of the touch area when the capacitance value is close to the preset capacitance threshold value includes: When the capacitance value is close to the capacitance upper limit value, increase the touch threshold of the touch area, so as to identify the touch when it is detected that the capacitance change value of the touch area is greater than the touch threshold an area is touched, thereby reducing the touch sensitivity of said touched area; When the capacitance value is close to the capacitance lower limit value, lower the touch threshold of the touch area, so as to identify the touch when it is detected that the capacitance change value of the touch area is greater than the touch threshold area is touched, thereby increasing the touch sensitivity of the touched area. 3. A device for dynamically adjusting the sensitivity of a touch screen, characterized in that it comprises: A capacitance value acquisition unit, configured to acquire the capacitance value of the touch area in the touch screen; A touch sensitivity adjustment unit, configured to adjust the touch sensitivity of the touch area by adjusting the touch threshold of the touch area when the capacitance value is close to a preset capacitance threshold; The touch sensitivity adjustment unit includes: a threshold value proximity determination subunit, configured to compare the capacitance value with a capacitance threshold value to determine whether the capacitance value is close to the capacitance threshold value, Wherein, the capacitance threshold value includes a capacitance upper limit value and a capacitance lower limit value, when the capacitance value does not belong to the capacitance threshold defined by the capacitance upper limit value and the capacitance lower limit value In the limit range, it is judged that the touch screen is an unqualified product, and when the capacitance value belongs to the capacitance threshold range defined by the capacitance upper limit and the capacitance lower limit, it is judged that the touch screen is It is a qualified product; the threshold value is close to the determination subunit is specifically used for when the difference between the capacitance value and the capacitance threshold value is less than or equal to a preset multiple of the capacitance threshold value, It is determined that the capacitance value is close to the capacitance threshold value. 4. The device according to claim 3, wherein the touch sensitivity adjustment unit further comprises: A touch threshold increasing subunit, configured to increase the touch threshold of the touch area when the capacitance value is close to the upper limit value of the capacitance, so that when it is detected that the capacitance change value of the touch area is greater than the Recognizing that the touch area is touched when the threshold is touched, thereby reducing the touch sensitivity of the touch area; a touch threshold lowering subunit, configured to lower the touch threshold of the touch area when the capacitance value is close to the lower limit value of the capacitance, so that when it is detected that the capacitance change value of the touch area is greater than the When the threshold is touched, it is recognized that the touch area is touched, so as to improve the touch sensitivity of the touch area.