TW201525793A - Touch display apparatus and touch mode switching method thereof - Google Patents

Abstract

A touch display apparatus and a touch mode switching method thereof are provided. A touch mode of a touch panel is switched according to a touch track and a touch area of an input tool.

Description

Touch device and touch mode switching method thereof

The present invention relates to an electronic device, and more particularly to a touch device and a touch mode switching method thereof.

With the rapid development of technology, most electronic products, such as notebook computers, mobile phones or portable multimedia players, often have touch panels as a new generation input interface. In general, the touch panel is roughly classified into a resistive touch panel, a capacitive touch panel, an optical touch panel, an acoustic wave touch panel, and an electromagnetic touch panel according to different sensing methods. Capacitive touch panels have been widely used in electronic products because of their fast response time, high reliability, and high durability.

The operation of the capacitive touch panel is to use a finger or a conductive object, such as a stylus, to approach or touch the touch panel to change the capacitance value on the touch panel. When a change in the capacitance value is detected, the position approached or contacted by the finger or the conductive object can be determined, and the functional operation corresponding to the touch position is performed.

When using a stylus for touch, you need to switch the capacitive touch panel. The touch mode enhances the sensitivity of the capacitive touch panel, thereby accurately determining the touch position of the stylus. However, since the touch sensing signal strength of the stylus is similar to the noise level of the capacitive touch panel, it is easy for the capacitive touch panel to misidentify the noise as the touch sensing signal of the stylus, and the capacitance is The touch panel is turned into a highly sensitive touch mode, which increases unnecessary power consumption.

The invention provides a touch device and a touch mode switching method thereof, which can prevent the touch device from mistakenly changing its touch mode to a high sensitivity mode and increase unnecessary power consumption.

The touch device of the present invention includes a touch panel and a control unit. The touch panel detects the touch track and the touch area of the input tool. The control unit is coupled to the touch panel to switch the touch mode of the touch panel according to the touch track and the touch area of the input tool.

In an embodiment of the invention, when the touch track conforms to the preset track and the touch area is smaller than the first preset area, the control unit switches the touch mode of the touch panel to the first touch mode, and when touched When the control area is greater than the second preset area or the touch panel continues to detect the touch operation for the first preset time, the control unit switches the touch mode of the touch panel to the second touch mode, where the touch panel is The touch sensitivity in the first touch mode is higher than the touch sensitivity when the touch panel is in the second touch mode, and the second preset area is larger than the first preset area.

In an embodiment of the invention, the preset track is included in the second pre- Set the track where the touch panel is continuously clicked.

In an embodiment of the invention, the control unit further determines the type of the input tool according to the touch sensing signal strength of the corresponding input tool. When the touch track conforms to the preset track, the touch area is smaller than the preset area and the corresponding input When the touch sensing signal strength of the tool is less than the preset intensity, the control unit switches the touch mode of the touch panel to the first touch mode.

In an embodiment of the invention, the input tool corresponding to the first touch mode is a stylus, and the input tool corresponding to the second touch mode is a user's finger.

The touch mode switching method of the touch device of the present invention includes the following steps. Detects the touch track and touch area of the input tool. The touch mode of the touch device is switched according to the touch track and the touch area of the input tool.

In an embodiment of the invention, the step of switching the touch mode of the touch device according to the touch track and the touch area includes the following steps. Determine whether the touch track conforms to the preset track and the touch area is smaller than the first preset area. If the touch track conforms to the preset track and the touch area is smaller than the first preset area, the touch mode of the touch device is switched to the first touch mode. The touch operation is not detected whether the touch area is greater than the second preset area or whether the touch device continues for the first preset time. If the touch area is greater than the second predetermined area or the touch device does not detect the touch operation for the first predetermined time, the touch mode of the touch device is switched to the second touch mode, wherein the touch device is in the first The touch sensitivity in a touch mode is higher than the touch sensitivity when the touch device is in the second touch mode, and the second preset area is larger than the first preset area.

In an embodiment of the invention, the preset track is included in a second The touch device is continuously clicked within the preset time.

In an embodiment of the invention, the touch mode switching method further includes the following steps. Determine whether the touch sensing signal strength corresponding to the input tool is less than the preset intensity. If the touch track conforms to the preset track, the touch area is smaller than the preset area, and the touch sensing signal strength of the input tool is less than the preset intensity, the touch mode of the touch device is switched to the first touch mode.

In an embodiment of the invention, the input tool corresponding to the first touch mode is a stylus, and the input tool corresponding to the second touch mode is a user's finger.

Based on the above, the embodiment of the present invention switches the touch mode of the touch panel according to the touch track and the touch area of the input tool, so as to prevent the touch device from mistakenly changing its touch mode to a high sensitivity mode. Increase unnecessary power consumption.

The above described features and advantages of the invention will be apparent from the following description.

102‧‧‧Touch panel

104‧‧‧Control unit

S302~S312, 5402‧‧‧ Touch device switching method steps

FIG. 1 is a schematic diagram of a touch device according to an embodiment of the invention.

FIG. 2A is a schematic diagram showing the count value of the touch sensing signal corresponding to the stylus.

FIG. 2R is a schematic diagram showing the count value of the touch sensing signal corresponding to the finger of the user.

FIG. 3 illustrates a touch mode switching method of a touch device according to an embodiment of the invention.

FIG. 4 illustrates a touch mode switching method of a touch device according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a touch device according to an embodiment of the invention. Please refer to FIG. 1 . The touch device can be a touch-enabled electronic device such as a smart phone, a tablet computer or a notebook computer. The touch device can include a touch panel 102 and a control unit 104. The control unit 104 is coupled to the control panel 102. The touch panel 102 is configured to detect the touch track of the input tool and the touch area of the input tool, and the control unit 104 is configured to switch the touch mode of the touch panel 102 according to the touch track and the touch area of the input tool. In order to make the touch panel 102 have different touch sensitivity corresponding to different input tools. The input tool can be, for example, a stylus or a user's finger, but is not limited thereto.

In detail, as shown in FIG. 2A and FIG. 2B , the touch panel senses the count value of the corresponding touch sensing signal obtained by the stylus and the user's finger, wherein the larger the count value is. Represents the strength of the sensing signal. Since the touch area and the touch intensity of the touch sensing signal corresponding to the stylus are smaller than the touch area and the signal intensity of the touch sensing signal corresponding to the finger of the user, the control unit 104 touches according to the input tool. When the control track and the touch area switch the touch mode of the touch panel 102, it can be determined whether the touch track of the input tool conforms to the preset track and the touch area is smaller than the first preset area. If the touch track meets the preset track and the touch area is smaller than a first preset area, the control unit 104 can switch the touch mode of the touch panel to the first touch mode, that is, switch to the stylus. High sensitivity touch mode for operation.

The preset track may be, for example, a touch track continuously clicked on the touch panel 102. For example, the touch panel 102 is continuously clicked twice by the touch pen to enable the control unit 104 to switch the touch mode of the touch panel to The first touch mode. As described above, since the touch area of the touch sensing signal corresponding to the stylus is smaller than the touch area of the touch sensing signal corresponding to the user's finger, the touch is switched according to the touch track and the touch area. The touch mode of the panel 102 ensures that the input tool for the touch operation is a stylus, and the signal characteristics of the touch sensing signal generated by continuously clicking twice are different from the signal characteristics of the general noise, so The control unit 104 is prevented from accidentally turning the touch mode of the touch panel 102 into a high sensitivity mode, thereby increasing unnecessary power consumption.

In addition, after the touch panel 102 is switched to the first touch mode, the control unit 104 can continue to determine whether to switch the touch mode of the touch panel 102 again according to the touch operation situation detected by the subsequent touch panel 102. For example, the control unit 104 can determine whether the touch area of the touch panel 102 is greater than a second preset area (the size of the second preset area is greater than the first preset area) or whether the touch panel has not been detected for a preset period of time. In the touch operation, if the touch area of the touch panel 102 is greater than the second predetermined area or the touch panel has not detected the touch operation for a predetermined period of time, the control unit 104 touches the touch panel 102. The mode is switched to the second touch mode, that is, switched to a high-sensitivity touch mode suitable for the user's finger operation. The touch sensitivity of the touch panel 102 in the second touch mode is lower than the touch sensitivity of the touch panel 102 in the first touch mode, so that the power consumption of the touch device can be reduced.

It should be noted that the above embodiment only switches the touch mode of the touch panel 102 according to the touch track and the touch area of the input tool, but as shown in FIG. 2A and FIG. 2B, the touch sensing signal corresponding to the stylus The intensity of the touch sensing signal is also significantly smaller than the intensity of the touch sensing signal corresponding to the user's finger. Therefore, in some embodiments, the intensity of the touch sensing signal can also be used as a basis for switching the touch mode of the touch panel 102. That is, when the control unit 104 determines that the touch track of the input tool conforms to the preset track, the touch area of the input tool is smaller than the preset area, and the touch sensing signal intensity of the corresponding input tool is less than the preset intensity, the control unit 104 The touch mode of the touch panel 102 is switched to the first touch mode.

FIG. 3 illustrates a touch mode switching method of a touch device according to an embodiment of the present invention. Please refer to FIG. 3 . The touch mode switching method for summarizing the above touch device may include the following steps. First, the touch track and the touch area of the input tool are detected (step S302). Then, the touch mode of the touch device is switched according to the touch track and the touch area of the input tool (step S304). In detail, the step S304 may include: determining whether the touch track conforms to the preset track and the touch area is smaller than the first preset area (step S306), wherein the preset track may be, for example, a continuous click on the touch device. The track is controlled, for example, the touch device is continuously clicked twice in a second preset time. If the touch track conforms to the preset track and the touch area is smaller than the first preset area, the touch mode of the touch device is switched to the first touch mode (step S308). Conversely, if the touch track does not meet the preset If the track or the touch area is not smaller than the first preset area, the process returns to step S302 to continue detecting the touch track and the touch area of the input tool.

Next, after step S308, it is determined whether the touch area of the input tool is large. The touch operation is not detected in the second predetermined area or whether the touch device continues for a first preset time (step S310). If the touch area of the input device is greater than the second predetermined area or the touch device does not detect the touch operation for a first predetermined time, the touch mode of the touch device is switched to the second touch mode (step S312), wherein the touch sensitivity of the touch device in the first touch mode is higher than the touch sensitivity when the touch device is in the second touch mode, and the second preset area is greater than the first preset area. . Conversely, if the touch area of the input tool is not greater than the second predetermined area or the touch device does not continue for a first preset time, the touch operation is not detected, then return to step S302 to continue detecting the touch of the input tool. Track and touch area. The input tool corresponding to the first touch mode may be, for example, a stylus, and the input tool corresponding to the second touch mode may be, for example, a user's finger, but not limited thereto.

FIG. 4 illustrates a touch mode switching method of a touch device according to another embodiment of the present invention. Please refer to FIG. 4 . The touch mode switching method in this embodiment is different from the touch mode switching method in the embodiment of the present invention. The touch mode switching method in this embodiment determines that the touch track conforms to the preset track and the touch area is smaller than the first preset area. (that is, after step S306), it is further determined whether the touch sensing signal strength of the corresponding input tool is less than the preset intensity (step S402), if the touch sensing signal strength of the corresponding input tool is less than the preset intensity, that is, if the touch After the control track conforms to the preset track, the touch area is smaller than the preset area, and the touch sensing signal strength of the input tool is less than the preset intensity, the process proceeds to step S308 to switch the touch mode of the touch device to the first touch mode. Conversely, if the intensity of the touch sensing signal corresponding to the input tool is not less than the preset intensity, then returning to step S302 to continue detecting the touch track and the touch area of the input tool.

In summary, the present invention switches the touch mode of the touch panel according to the touch track and the touch area of the input tool, so as to prevent the touch device from mistakenly changing its touch mode to a high sensitivity mode. Unnecessary power consumption.

S302~S312‧‧‧ Touch device switching method steps

Claims (10)

A touch device includes: a touch panel that detects a touch track and a touch area of an input tool; and a control unit coupled to the touch panel, the touch track and the touch according to the input tool The control area switches the touch mode of the touch panel. The touch device of claim 1, wherein the control unit controls the touch panel when the touch track conforms to a predetermined track and the touch area is smaller than a first predetermined area. The mode is switched to a first touch mode, and when the touch area is greater than a second predetermined area or the touch panel does not detect the touch operation for a first preset time, the control unit touches the touch The touch mode of the control panel is switched to a second touch mode, wherein the touch sensitivity of the touch panel in the first touch mode is higher than the touch sensitivity of the touch panel in the second touch mode. The second preset area is larger than the first preset area. The touch device of claim 2, wherein the preset track comprises a track in which the touch panel is continuously clicked during a second preset time. The touch device of claim 2, wherein the control unit determines the type of the input tool according to the touch sensing signal intensity corresponding to the input tool, and when the touch track conforms to the preset track, When the touch area is smaller than the preset area and the touch sensing signal strength of the input tool is less than a preset intensity, the control unit switches the touch mode of the touch panel to the first touch mode. The touch device of claim 2, wherein the input tool corresponding to the first touch mode is a stylus, and the input corresponding to the second touch mode The input tool is the user's finger. The touch mode switching method of the touch device includes: detecting a touch track and a touch area of an input tool; and switching the touch of the touch device according to the touch track of the input tool and the touch area mode. The method of switching the touch mode of the touch device according to the touch track and the touch area includes: determining whether the touch track conforms to a preset. The track area is smaller than a first predetermined area; if the touch track conforms to the preset track and the touch area is smaller than the first preset area, the touch mode of the touch device is switched to a first a touch mode; determining whether the touch area is greater than a second predetermined area or whether the touch device continues to detect a touch operation for a first predetermined time; and if the touch area is greater than the second Setting the area or the touch device does not detect the touch operation for the first predetermined time, and switching the touch mode of the touch device to a second touch mode, wherein the touch device is in the first touch The touch sensitivity in the control mode is higher than the touch sensitivity when the touch device is in the second touch mode, and the second preset area is larger than the first preset area. The touch mode switching method of claim 7, wherein the preset track comprises a track in which the touch device is continuously clicked in a second preset time. The touch mode switching method of claim 7, further comprising: determining whether the touch sensing signal strength corresponding to the input tool is less than a preset intensity; and if the touch track conforms to the preset track, When the touch area is smaller than the preset area and the touch sensing signal strength of the input tool is less than the preset intensity, the touch mode of the touch device is switched to the first touch mode. The touch mode switching method of claim 7, wherein the input tool corresponding to the first touch mode is a stylus, and the input tool corresponding to the second touch mode is a user's finger. .