TWI663508B - Algorithm for reducing power consumption in sleep mode of touch and display drive integration system and touch display panel using the method to realize a touch display function - Google Patents

Abstract

An algorithm for reducing power consumption in a sleep mode of a touch and display drive integration system, which is implemented using a control circuit, includes the following steps: detecting a touch idle time, and when the touch idle time is greater than a preset time To enter a sleep mode; in this sleep mode, a plurality of touch sensing receiving electrodes of a panel are short-circuited, and a sleep mode touch scan procedure is performed in a selected time segment, wherein the panel is in a normal state The touch scanning program includes a plurality of scanning time segments to scan the plurality of touch sensing receiving electrodes, and the selected time segment is any one of the plurality of scanning time segments; and The first frame of touch-sensing raw data obtained in the sleep mode is set as a reference value set, and each subsequent frame of touch-sensing raw data is subtracted from the reference value set to obtain a difference A value set, wherein when a difference value in the difference set is greater than a preset threshold, the sleep mode is switched to the normal touch scanning procedure. The present invention also discloses a touch display panel which uses the sleep mode of the touch and display drive integration system as described above to reduce power consumption to achieve a touch display function.

Description

Algorithm for reducing power consumption in sleep mode of touch and display drive integration system and touch display panel using the method to realize a touch display function

The invention relates to an algorithm for reducing power consumption of an integrated system of touch and display driving, and in particular to an algorithm for reducing power consumption of a sleep mode.

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 The single chip technology not only reduces the number of components, makes the screen thinner, but also improves the light transmittance of the panel, making the battery life longer.

In order to save power consumption, the touch display panel enters a sleep mode when the idle time is longer than a preset time (for example, 15 seconds), and then switches back to the normal mode after detecting a finger touch.

Most of the conventional technologies use the method of reducing the reporting rate to achieve the purpose. However, in the sleep mode, when the touch speed of the user's finger is too fast, the touch is often not detected because the reporting rate is too low, resulting in failure. The frustration of switching back to normal mode affects the user experience.

In order to solve the above problems, a novel algorithm for reducing power consumption in a sleep mode of a touch and display driving integrated system is urgently needed in the art.

It is an object of the present invention to disclose an algorithm for reducing power consumption in a sleep mode of a touch and display drive integrated system, which comprises shorting a plurality of touch sensing receiving electrodes of a panel in the sleep mode, and A sleep mode touch scan procedure is performed in a selected period of time, which reduces the scan procedure time to achieve the purpose of reducing power consumption.

Another object of the present invention is to disclose an algorithm for reducing power consumption in a sleep mode of a touch and display driving integrated system, which is based on the first frame touch sensing element obtained in the sleep mode. The starting data is set as a reference value set, and each subsequent frame of touch sensing raw data obtained is subjected to a subtraction operation with the reference value set to obtain a difference set. When a difference value in the difference set is greater than When a preset threshold is set, the sleep mode is switched to the normal touch scanning procedure, and the touch mode can be quickly switched back to the normal mode without sacrificing touch sensitivity.

To achieve the aforementioned purpose, an algorithm for reducing power consumption in the sleep mode of a touch and display drive integrated system is proposed. It is implemented using a control circuit and includes the following steps: detecting a touch idle time and Enter a sleep mode when the idle time is greater than a preset time; in the sleep mode, short-circuit a plurality of touch sensing receiving electrodes of a panel, and perform a sleep mode touch scan procedure in a selected time segment Wherein, the panel includes a plurality of scanning time segments to scan the plurality of touch-sensing receiving electrodes in a normal touch scanning procedure, and the selected time segment is one of the plurality of scanning time segments. Any time segment; and setting the first frame of touch sensing raw data obtained in the sleep mode as a reference value set, and each subsequent frame of touch sensing raw data obtained with the reference value set Performing a subtraction operation to obtain a difference set, wherein when a difference in the difference set is greater than a preset threshold, switching the sleep mode to the normal touch Tracing program.

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

In an embodiment, the time of the sleep mode touch scan procedure is an inverse value of the number N of the plurality of touch sensing receiving electrodes, and N is a positive integer.

In one embodiment, the panel has a down-frequency touch report rate in the sleep mode, and the down-frequency touch report rate is determined by a maximum touch click rate.

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 aforementioned control circuit to realize the sleep mode reduction algorithm of the touch and display driving integrated system.

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

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.

Step a‧‧‧ detects a touch idle time and enters a sleep mode when the touch idle time is greater than a preset time

Step b‧‧‧ short the plurality of touch sensing receiving electrodes of a panel in the sleep mode, and perform a sleep mode touch scan procedure in a selected time segment, wherein the panel is in a normal touch The control scanning program includes a plurality of scanning time segments to scan the plurality of touch sensing receiving electrodes, and the selected time segment is any one of the plurality of scanning time segments.

Step c‧‧‧ Set the first frame of touch sensing raw data obtained in the sleep mode as a reference value set, and perform each subsequent frame of touch sensing raw data obtained with the reference value set A subtraction operation to obtain a difference set, wherein when a difference in the difference set is greater than a preset threshold, the sleep mode is switched to the normal touch scanning procedure

100‧‧‧Touch display panel

110‧‧‧Touch display driving circuit

111‧‧‧Control circuit

111a‧‧‧ Information Processing Unit

111b‧‧‧memory unit

120‧‧‧Touch display module

FIG. 1 is a flowchart of steps in an embodiment of an algorithm for reducing power consumption in a sleep mode of a touch and display driving integrated system according to the present invention.

FIG. 2a is a schematic diagram illustrating a scan time reduction algorithm of the sleep mode reduction algorithm of the touch and display drive integrated system of the present invention.

FIG. 2b is a schematic diagram of the first frame of touch sensing original data obtained in the sleep mode of the sleep mode of the touch and display drive integrated system of the present invention in the sleep mode reduction algorithm.

FIG. 2c is a schematic diagram showing that the algorithm for reducing the power consumption in the sleep mode of the touch and display drive integrated system of the present invention detects that a difference caused by a finger touch is greater than a preset threshold.

FIG. 3 illustrates a touch display panel, which is one of the algorithms for reducing power consumption in the sleep mode.

Please refer to FIG. 1, which illustrates a flowchart of steps in an embodiment of an algorithm for reducing power consumption in a sleep mode of the touch and display driving integrated system of the present invention.

As shown in the figure, the algorithm for reducing power consumption in the sleep mode of the touch and display driving integrated system of the present invention includes the following steps: detecting a touch idle time, and when the touch idle time is greater than a preset time Enter a sleep mode (step a); in the sleep mode, a plurality of touch sensing receiving electrodes of a panel are short-circuited, and a sleep mode touch scan procedure is performed in a selected time segment, wherein, the The panel includes a plurality of scanning time segments in a normal touch scanning procedure to scan the plurality of touch sensing receiving electrodes, and the selected time segment is any one of the plurality of scanning time segments. (Step b); and setting the first frame of touch sensing raw data obtained in the sleep mode as a reference value set, and each subsequent frame of touch sensing raw data obtained with the reference value set Performing a subtraction operation to obtain a difference set, wherein when a difference in the difference set is greater than a preset threshold , The sleep mode is switched to the normal touch scanning procedure (step c).

The time of the sleep mode touch scan procedure is an inverse value of the number N of the plurality of touch sensing receiving electrodes, and N is a positive integer.

The panel has a down-frequency touch reporting rate in the sleep mode, which is determined by a maximum touch click rate.

Please refer to FIG. 2a to FIG. 2c together, wherein FIG. 2a shows a schematic diagram of the scanning process time reduction algorithm of the sleep mode reduction algorithm of the sleep mode of the touch and display drive integrated system of the present invention; FIG. Schematic diagram of the first frame of touch sensing raw data obtained in the sleep mode of the invented touch and display drive integration system sleep mode to reduce power consumption; Figure 2c shows the touch and display drive integration of the present invention The sleep mode of the system reduces the power consumption. It is a schematic diagram that the difference caused by finger touch is greater than a preset threshold.

As shown in FIG. 2a, the touch and display drive integration system uses a touch scan function and a display function in a time-division and multi-tasking manner. In the sleep mode of the touch and display drive integrated system of the present invention, the algorithm for reducing power consumption is achieved by short-circuiting the N touch sensing receiving electrodes of a panel in the sleep mode, and selecting the A sleep mode touch scan procedure is performed, where N is a positive integer greater than 1, and N = 20 is taken as an example in the figure, but not limited thereto.

The present invention is to short-circuit 20 touch-sensing receiving electrodes, so that 20 touch-scanning time segments need to be touch-sensed before short-circuiting, and only 1 touch-scanning time-segment is required after short-circuiting. The second touch scan time segment is taken as an example, but it is not limited to this.

Therefore, the algorithm for reducing the power consumption in the sleep mode of the touch and display drive integration system of the present invention can reduce the touch scan process time in the sleep mode to 1/20 of the original, and reduce the scan process time to reduce power consumption. Purpose.

As shown in FIG. 2b, the algorithm for reducing power consumption in the sleep mode of the touch and display drive integrated system of the present invention is to set the first frame of touch sensing raw data obtained in the sleep mode as a reference value set, and A subtraction operation is performed on each subsequent frame of touch sensing raw data and the reference value set to obtain a difference set. When a difference in the difference set is greater than a preset threshold, as shown in FIG. 2c, it indicates that a finger touch is detected, and the sleep mode is switched to the normal touch scanning procedure.

The panel has a down-frequency touch report rate in the sleep mode, and the down-frequency touch report rate is determined by a maximum touch click rate.

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 which is one of the algorithms for reducing power consumption using the sleep mode described above. 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 drive circuit 110 has a control circuit 111 to implement the aforementioned sleep mode power reduction algorithm. The control circuit 111 is executed by an information processing unit 111a and a memory unit 111b. A program to implement the algorithm for reducing power consumption in the sleep mode. 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.

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

1. The sleep mode reduction algorithm of the touch and display drive integrated system of the present invention is to short the plurality of touch sensing receiving electrodes of the panel in the sleep mode, and to select a time segment A sleep mode touch scan process is performed in order to reduce the scan process time to achieve the purpose of reducing power consumption.

2. The algorithm for reducing power consumption in the sleep mode of the touch and display drive integration system of the present invention is to use the first frame of touch sensing raw data obtained in the sleep mode as a reference value set, and set the subsequent Each frame of the obtained touch sensing raw data is subjected to a subtraction operation with the reference value set to obtain a difference set. When a difference in the difference set is greater than a preset threshold, the sleep mode is switched. With this normal touch scanning procedure, it is possible to quickly switch back to the normal mode without sacrificing touch sensitivity.

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.

Claims (6)

An algorithm for reducing power consumption in a sleep mode of a touch and display drive integration system is implemented using a control circuit and includes the following steps: Detecting a touch idle time, and when the touch idle time is greater than a preset time Enter a sleep mode at this time; in the sleep mode, a plurality of touch sensing receiving electrodes of a panel are short-circuited, and a sleep mode touch scan procedure is performed in a selected time segment, wherein the panel is in a normal state The touch scanning program includes a plurality of scanning time segments to scan the plurality of touch sensing receiving electrodes, and the selected time segment is any one of the plurality of scanning time segments; and The first frame of touch-sensing raw data obtained in the sleep mode is set as a reference value set, and each subsequent frame of touch-sensing raw data is subtracted from the reference value set to obtain a difference A value set, wherein when a difference value in the difference set is greater than a preset threshold, the sleep mode is switched to the normal touch scanning procedure. According to the sleep mode of the touch and display drive integrated system described in item 1 of the scope of the patent application, the power reduction algorithm, wherein the control circuit has an information processing unit and a memory unit to execute a program. The algorithm for reducing power consumption in the sleep mode of the touch and display drive integrated system according to item 1 of the scope of the patent application, wherein the time of the touch scan procedure in the sleep mode is the number of the plurality of touch sensing receiving electrodes. Reciprocal value of N, N is a positive integer. The algorithm for reducing power consumption in the sleep mode of the touch and display drive integrated system described in item 1 of the scope of patent application, wherein the panel has a down-frequency touch broadcast rate in the sleep mode, and the down-frequency touch broadcast The rate is determined by the maximum rate of one touch click. 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 display driving circuit includes an application for a patent An algorithm for reducing the power consumption of the control circuit according to any one of items 1 to 4 to realize a sleep mode of the touch and display drive integrated system. The touch display panel according to item 5 of the scope of patent application, which consists of an optical touch display panel, a resistive touch display panel, an electromagnetic touch display panel, an acoustic wave touch display panel, and A type of touch display panel selected by a group consisting of a capacitive touch display panel.