TWI672619B - Edge false touch prevention method for touch display driving integrated system and touch display panel and handheld device using the same - Google Patents

Abstract

A method for preventing edge false touch, and a touch display panel and a handheld device using the same, the method includes: finding a touch area containing one of a plurality of first touch points in a frame of difference data, and A peak point is found among the plurality of touch points, and the frame difference data is obtained from the difference between a frame of touch-sensing raw data and a frame of no-touch reference raw data; the peak point is located at the frame difference When a row or a column on the outermost edge of the data is found in the first plurality of touch points, a connected area including the second plurality of connected touch points centered on the peak point, and each of the connected touches The points each have a sensing difference greater than a threshold value; and a judgment process is performed to determine that the touch area is an edge mis-touch area when the gap between the number of rows and columns covered by the connected area exceeds a preset value.

Description

Edge false touch prevention method for touch display driving integration system, touch display panel and handheld device using the same

The present invention relates to a touch detection mechanism of a touch and display drive integration system, and more particularly, to a method for preventing false touch on edges.

With the popularity and vigorous development of mobile devices, touch display devices have become one of the indispensable components. In the traditional system architecture, the touch and display functions are controlled independently by the touch chip and the display chip, respectively. The Touch and Display Driver Integration (TDDI) system integrates the touch chip and the display chip by Integrated into a single chip, not only reduces the number of components, makes the screen thinner, but also improves the panel light transmittance, and makes the battery life longer.

In addition, since a full-screen touch display device has a narrower frame than a general touch display device and enjoys a higher screen ratio, it has gradually become the mainstream of the handheld device market. However, when a user holds a full-screen touch display device, it is more likely to cause a false touch at the edges, which is an inconvenience.

In order to solve the above-mentioned problems, a novel method for preventing false touch on the edge of a touch and display driving integration system is urgently needed in the art.

An object of the present invention is to disclose a method for preventing false touch on the edge of a touch and display drive integration system, which can prevent an edge error by executing an algorithm through the original control circuit without increasing the hardware cost. Touch phenomenon.

Another object of the present invention is to disclose a method for preventing false touch on the edge of a touch and display drive integration system, which can facilitate the user's holding operation without the problem of false touch on the edge.

In order to achieve the foregoing object, a method for preventing false touch of edges for a touch display driving integrated system is proposed, which is implemented by a control circuit and includes the following steps:

Find a touch area containing one of the first plurality of touch points in a frame of difference data and find a peak point in the first plurality of touch points. The frame difference data is touched by one frame. Obtained by controlling the difference between the sensing raw data and a frame of non-touch reference raw data, and each of the touch points has a sensing difference greater than a first threshold;

When the peak point is located in the most marginal row or column of the frame difference data, one of the first plurality of touch points is found to have one of the second plurality of connected touch points centered on the peak point. A pass area, each of the connected touch points having the sensing difference greater than a second threshold; and executing a judgment procedure so that the gap between the number of rows and columns covered by the connected area exceeds a preset value It is determined that the touch area is an edge mis-touch area.

In one embodiment, the determination procedure includes the number of rows less than a first preset value and the number of columns greater than a second preset value, or the number of columns greater than a third preset value and the When the number of lines is less than a fourth preset value, it is determined that the touch area is the edge mis-touch area, wherein the third preset value> the second preset value> the fourth preset value> all The first preset value is described.

In one embodiment, the control circuit has an information processing unit and a memory unit to execute a program.

In one embodiment, when the touched area is determined as the edge mistouched area, the control circuit considers the touched area as an untouched area.

In addition, the present invention further provides a touch display panel having a touch display driving circuit and a touch display module, wherein the touch display driving circuit is used to drive the touch display module, and the touch The display driving circuit includes the control circuit to implement the method for preventing false touch of the edge for a touch display driving integrated system.

In one embodiment, the touch display panel comprises an optical touch display panel, a resistive touch display panel, an electromagnetic touch display panel, an acoustic wave touch display panel, and a capacitive touch panel. A touch display panel selected by a group of display panels.

In addition, the present invention further provides a handheld device having the aforementioned touch display panel to provide an edge mistouch prevention function.

In order to enable your reviewers to further understand the structure, characteristics, and purpose of the present invention, drawings and detailed descriptions of the preferred embodiments are attached below.

Please refer to FIG. 1, which illustrates a flowchart of an embodiment of a method for preventing false touch of an edge of a touch and display driving integrated system according to the present invention, which is implemented using a control circuit, wherein the control circuit is provided by an information The processing unit and a memory unit execute a program to implement the touch coordinate calculation method.

As shown in FIG. 1, the method for preventing false touch on the edge of the touch and display driving integrated system of the present invention includes the following steps:

Find a touch area containing one of the first plurality of touch points in a frame of difference data and find a peak point in the first plurality of touch points. The frame difference data is touched by one frame. Obtained by controlling the difference between the sensing raw data and a frame of touch-free reference raw data, and each of the touch points has a sensing difference greater than a first threshold (step a); the peak point is located in the frame When a row or a column on the outermost edge of the difference data is found in the first plurality of touch points, a connected area including the second plurality of connected touch points centered on the peak point, and each of the connections The touch points each have the sensing difference greater than a second threshold value (step b); and a judgment process is performed to determine the difference between the number of rows and columns covered by the connected area exceeding a preset value. The touch area is a marginal touch area (step c).

Wherein, the judging procedure includes when the number of rows is less than a first preset value and the number of columns is greater than a second preset value, or the number of columns is greater than a third preset value and the number of rows is less than one When the fourth preset value is determined, the touch area is the edge mis-touch area, wherein the third preset value> the second preset value> the fourth preset value> the first preset value Set value. Preferably, the second preset value is much larger than the fourth preset value, that is, when the communication area is a narrow area, it is determined that the user is holding the touch and display driving integration system. This is caused by the touch area, not by a touch operation. The values of the first preset value, the second preset value, the third preset value, and the fourth preset value can be controlled by different users with the touch and display drive integration system in their hands. The statistical value of the experimental results generated is determined.

In addition, when the touched area is determined as the edge mistouched area, the control circuit considers the touched area as an untouched area.

Please refer to FIG. 2, which is a schematic diagram of a long and narrow touch communication area located on the left edge of a frame of difference data.

As shown in FIG. 2, in a narrow connected area 10 located on the left edge of the frame difference data, a peak point (with a difference value of 537) is located on the leftmost line of the frame difference data, and due to the narrow length The gap between the number of rows (2) and the number of columns (12) covered by the connected area 10 is 10, which is more than a preset value of the present invention (for example, but not limited to 6, which can be held by different users' hands. The statistical value of the experimental results generated by the touch and display drive integration system is determined), so it is determined that the touch area is an edge mis-touch area.

In addition, according to the above description, the present invention further discloses a touch display panel. Please refer to FIG. 3, which illustrates a touch display panel employing one of the above-mentioned methods for preventing edge mis-touch. As shown in FIG. 3, a touch display panel 100 has a touch display driving circuit 110 and a touch display module 120. The touch display driving circuit 110 is used to drive the touch display module 120 to realize A touch display function, and the touch display driving circuit 110 has a control circuit 111 to implement the above-mentioned method for preventing false touch on the edge. The control circuit 111 executes a program through an information processing unit 111a and a memory unit 111b. Implement this method for preventing edge touch. Since driving a touch display module with a touch display driving circuit to realize a touch display function is a conventional technology, no further description of its principle is intended here.

In addition, the touch display panel 100 may be an optical touch display panel, a resistive touch display panel, an electromagnetic touch display panel, an sonic touch display panel, and a capacitive touch display panel. A touch display panel selected by the group. Since the touch display panels are all known technologies, they are not further described here.

In addition, according to the above description, the present invention further discloses a handheld device. Please refer to FIG. 4, which illustrates a block diagram of a handheld device using the touch display panel of FIG. 3. As shown in FIG. 4, a handheld device 200 has a touch display panel 100, and since the touch display panel 100 adopts the above-mentioned method for preventing false touch of the edge, the handheld device 200 can provide a function of preventing false touch of the edge.

With the design disclosed above, the present invention has the following advantages:

1. The method for preventing false touch on the edge of the touch and display driving integrated system of the present invention can prevent the false touch on the edge by executing an algorithm through the original control circuit without increasing the hardware cost.

2. The method for preventing false touch on the edge of the touch and display drive integration system of the present invention can facilitate the user's holding operation without the problem of false touch on the edge.

What is disclosed in this case is a preferred embodiment. For example, those who have partial changes or modifications that are derived from the technical ideas of this case and are easily inferred by those skilled in the art, do not depart from the scope of patent rights in this case.

To sum up, regardless of the purpose, method and effect, this case is showing its technical characteristics that are quite different from the conventional ones, and its first invention is practical, and it is also in line with the patent requirements of the invention. Granting patents at an early date will benefit society and feel good.

Step a‧‧‧find a touch area containing one of the first plurality of touch points in a frame of difference data and find a peak point in the first plurality of touch points, the frame of difference data It is obtained by the difference between one frame of touch sensing raw data and one frame of non-touch reference raw data, and each of the touch points has a sensing difference greater than a first threshold.

Step b‧‧‧ When the peak point is located in a row or a column on the outermost edge of the frame difference data, find the second plurality of connections centered on the peak point among the first plurality of touch points. A connected area of one of the touch points, each of the connected touch points has the sensing difference greater than a second threshold

Step c‧‧‧ executes a judgment procedure to determine that the touched area is a marginal touched area when the gap between the number of rows and columns covered by the connected area exceeds a preset value

10‧‧‧Narrow and long connected area

100‧‧‧Touch display panel

110‧‧‧Touch display driving circuit

111‧‧‧Control circuit

111a‧‧‧ Information Processing Unit

111b‧‧‧memory unit

120‧‧‧Touch display module

200‧‧‧ handheld device

FIG. 1 is a flowchart of an embodiment of a method for preventing false touch at the edge of a touch and display driving integrated system according to the present invention. FIG. 2 is a schematic diagram of a narrow touch communication area located on the left edge of a frame of difference data. FIG. 3 illustrates a touch display panel using one of the edge mistouch prevention methods of FIG. 1. FIG. 4 is a block diagram of a handheld device using the touch display panel of FIG. 3.

Claims (7)

An edge false touch prevention method for a touch display driving integrated system is realized by a control circuit, which includes the following steps: finding a touch area containing a first plurality of touch points in a frame of difference data And find a peak point among the first plurality of touch points, the frame difference data is obtained from the difference between a frame of touch sensing raw data and a frame of non-touch reference raw data, and each The touch points all have a sensing difference greater than a first threshold; when the peak point is located in a row or a row at the outermost edge of the frame difference data, find out among the first plurality of touch points The peak point is a connected area containing a second plurality of connected touch points, each of the connected touch points has the sensing difference greater than a second threshold; and a judgment procedure is performed to When the difference between the number of rows and the number of columns covered by the connected area exceeds a preset value, the touch area is determined to be an edge touch area. An edge false touch prevention method for a touch display driving integrated system as described in item 1 of the patent application scope, wherein the determination procedure includes when the number of rows is less than a first preset value and the number of columns is greater than a first Two preset values, or when the number of columns is greater than a third preset value and the number of rows is less than a fourth preset value, it is determined that the touch area is the edge false touch area, wherein the third preset value Set value> the second preset value> the fourth preset value> the first preset value. As described in item 1 of the patent application scope, an edge false touch prevention method for a touch display driving integrated system, wherein the control circuit has an information processing unit and a memory unit to execute a program. The method for preventing false touch of an edge for a touch display driving integrated system as described in item 1 of the patent application scope, wherein when the touch area is determined as the false touch area of the edge, the control circuit will control the touch The zone is regarded as an untouched zone. A touch display panel having a touch display drive circuit and a touch display module, wherein the touch display drive circuit is used to drive the touch display module, and the touch display drive circuit includes a patent application The control circuit according to any one of items 1 to 4 in the range to realize the edge false touch prevention method for the touch display driving integrated system. As described in item 5 of the patent application scope, the touch display panel is composed of an optical touch display panel, a resistive touch display panel, an electromagnetic touch display panel, and an acoustic wave touch A touch display panel selected by a group consisting of a control display panel and a capacitive touch display panel. A hand-held device having a touch display panel as described in item 5 of the patent application scope to provide an edge false touch prevention function.