TW202201192A - Palm pressure mistouch prevention method for touch and display driver integrated system, touch display device and information processing device which is applied to a touch and display driver integration (TDDI) chip and executed by a control circuit of the TDDI chip to identify an edge mistouch mode and/or a palm pressure mistouch mode on a touch display screen - Google Patents

Abstract

The present invention mainly discloses a palm pressure mistouch prevention method for a touch and display driver integrated system, which is applied to a touch and display driver integration (TDDI) chip and executed by a control circuit of the TDDI chip to identify an edge mistouch mode and/or a palm pressure mistouch mode on a touch display screen. When the edge mistouch mode and/or the palm pressure mistouch mode occurs, the control circuit performs a data compensation process on the no-touch base data and/or the no-touch detection raw data so as to ensure that the touch display screen will not be affected by the edge mistouch or the palm pressure mistouch and cause false actions. The palm pressure mistouch prevention method for touch and display driver integrated system comprises steps of (1) performing a first feature recognition process on a frame difference data, wherein the frame difference data is obtained by performing a difference operation on a frame no-touch base data and a frame no-touch detection raw data; (2) obtaining a plurality of negative capacitance data by performing a second feature recognition process on the frame difference data, and then storing the plurality of negative capacitance data as a plurality of backup negative capacitance data; (3) performing a coordinate mapping process on the plurality of backup negative capacitance data to obtain a plurality of updated negative capacitance data; (4) executing an edge mistouch recognition process on the plurality of updated negative capacitance data; and (5) performing a judgment procedure on the plurality of updated negative capacitance data under the condition that the edge mistouch mode is not identified so as to identify the palm pressure mistouch mode. A touch display device includes a touch panel, a flat display panel and a touch and display driver integrated system chip, wherein the touch and display driver integrated system chip has a control unit for executing the above-described method.

Description

Palm pressure false touch prevention method for touch display driver integrated system, touch display device and information processing device

The present invention relates to the technical field of touch detection and display driver integration on a single chip (Touch and Display Driver Integration, TDDI), and more particularly, to a palm pressure false touch prevention method for a touch display driver integration system.

It is known that a touch display device is one of the indispensable components in a mobile electronic device. In the conventional system architecture, the touch function and the display driving function are independently controlled by a touch detection chip and a display driving chip, respectively. However, the touch and display driver integration (TDDI) system integrates the touch detection chip and the display driver chip into a single chip, which not only reduces the number and cost of components, but also makes the touch display device as a whole. become thinner.

FIG. 1 shows a block diagram of a conventional touch display device. As shown in FIG. 1 , the conventional touch display device 2 includes a touch display screen 20 and a TDDI chip 21 , wherein the TDDI chip 21 has a display driving circuit 211 and a touch detection circuit 212 . When performing the touch function, the TDDI chip 21 will first collect a frame of non-touch raw data (RawData) from a plurality of touch sensors (ie, capacitors) integrated in the touch display screen 20 for processing. It is a non-touch basic data (Basedata), and then collects multiple frames of touch detection data from the plurality of touch sensors in time, and then calculates the difference between the non-touch basic data and each frame of touch detection data Data (Diffdata), the touch sensing value is obtained after data processing. In order to ensure touch sensitivity and touch accuracy, the TDDI chip 21 has a corresponding algorithm for compensating for each frame of touch detection data collected in time, and also has a corresponding algorithm for Adaptive compensation is performed on the basic touch data.

In the process of executing the touch function, the acquisition of the non-touch basic data is related to the correctness of the touch sensing value. In some specific applications, such as when the screen of a smart phone is turned off, the user's palm is pressed on a large area of the screen. At this time, if the smart phone is turned on by double-clicking the screen or pressing the power button on the side If the screen of the mobile phone is used, the TDDI chip 21 will start to work, so as to perform the touch function and the display driving function.

FIG. 2 shows a table of a frame of non-touch detection data collected from a plurality of touch sensors by a conventional TDDI chip in a palm-pressed false-touch mode, and FIG. 3 shows a table processed by the conventional TDDI chip. A table of frame difference data. Practical experience shows that when the TDDI chip 21 performs the touch function under the condition of palm pressure accidental touch, the following two main problems will occur. First, when the mobile phone screen is restarted, the TDDI chip 21 will first collect a frame of non-touch raw data (RwaData), and then calculate a difference between the non-touch raw data and the original non-touch basic data Diffdata, so as to perform adaptive compensation (Adaptive compensation) on the touch-free basic data or the difference data to improve touch sensitivity and touch accuracy. However, as shown in FIG. 2 , in the case where the palm pressure false touch has occurred, the TDDI chip 21 will have a large area in the raw data map (Raw Data map) of one frame without touch collected after the mobile phone screen is restarted. The data of , is less than a reference value or a target value, so that a large-area concave (less than the target value) block is displayed on the non-touch raw data map. Second, as shown in FIG. 3 , a difference data map (Diffdata mpa) is obtained after completing a difference operation between the non-touch original data and the originally stored non-touch basic data. It is worth noting that the non-touch raw data collected in the palm pressure false touch mode will cause serious operation errors in the difference data, so that a corresponding one will appear on the difference data graph as shown in FIG. 3 . The large area negative value block forms the so-called negative capacitance Cneg data block.

The prior art solution for palm pressure false touches includes two processing steps: palm pressure false touch recognition and data compensation. When performing data compensation, the difference data can be directly compensated, or the false-touch data (ie, the negative capacitance data Cneg) contained in the non-touch original data can be compensated.

It should be noted that, when performing palm pressure false touch recognition, the prior art performs palm pressure false touch recognition on at least one frame of no-touch detection data and/or at least one frame of difference data according to a recognition algorithm. However, in a special testing environment, such as ESD testing, a frame (full screen) of no-touch detection data collected by the TDDI chip 21 from a plurality of touch sensors integrated in the touch display screen 20 will appear Irregular data jumping corresponds to an irregular pattern (Pattern) on a frame of touch detection data map (data map). In this case, the TDDI chip 21 will compensate the basic data and/or the difference data according to the wrong data, so that the subsequent smartphone cannot correctly respond and act to the user's touch behavior. .

As can be seen from the above description, there is an urgent need in the art for a new palm pressure false touch prevention method for a touch display driver integrated system.

The main purpose of the present invention is to provide a palm pressure false touch prevention method for a touch display driver integrated system, which is applied to a TDDI chip, and is executed by a control circuit of the TDDI chip to perform an edge operation on a touch display screen. Identify the false touch mode and/or a palm pressure false touch pattern, so that the control circuit can adaptively respond to the no-touch reference data under the condition of the edge false touch pattern and/or the palm pressure false touch pattern. (BaseData) and/or no touch detection raw data (RawData) to perform a data compensation process, so as to ensure that the touch display screen will not be affected by false edge touches or palm pressure false touches.

In order to achieve the above object, the present invention provides an embodiment of the palm pressure false touch prevention method for a touch display driver integrated system, which is executed by a control circuit to perform an edge false touch mode on a touch display screen and / or identification of a palm pressure false touch pattern, and includes the following steps:

(1) Perform a first feature identification process on a frame of difference data, wherein the frame difference data is obtained by performing a difference operation on a frame of non-touch reference data and a frame of non-touch detection raw data ;

(2) obtaining a plurality of negative capacitance data by performing a second feature identification process on the frame difference data, thereby storing the plurality of negative capacitance data as a plurality of backup negative capacitance data;

(3) performing a coordinate mapping process on a plurality of the backup negative capacitance data, thereby obtaining a plurality of updated negative capacitance data using a display panel coordinate system;

(4) performing an edge false touch identification process on a plurality of the updated negative capacitance data;

(5) In the case that the edge false touch mode is not identified, a judgment procedure is performed on a plurality of the updated negative capacitance data, so as to identify the palm pressure false touch mode.

）判斷各所述差值數據是否滿足第一相似度特徵；其中，S_L 為一第一相似度閥值。In one embodiment, the first feature identification process includes: judging whether each of the difference data is less than a first set threshold, judging whether a continuous frame number of the frame difference data is greater than a second set threshold, And through a first set of operations S∈[S _L ,

) to determine whether each of the difference data satisfies the first similarity feature; wherein, _SL is a first similarity threshold.

In one embodiment, the second feature identification process includes: judging whether each of the difference data is less than a negative capacitance threshold.

In one embodiment, the judging procedure includes the following steps:

using a plurality of inequalities to find a judgment starting negative capacitance from a negative capacitance region including a plurality of the updated negative capacitance data;

Taking the position of the judgment starting negative capacitance as a center point, dividing the negative capacitance area into a first quadrant area, a second quadrant area, a third quadrant area, and a fourth quadrant area, and calculating the first quadrant area One of the statistics of a plurality of the updated negative capacitance data whose value is greater than the judgment initial negative capacitance in a quadrant area, the second quadrant area, the third quadrant area, and the fourth quadrant area;

In the case where a plurality of the updated negative capacitance data contained in the negative capacitance region satisfy a second set operation formula S∈[ _SL , _SH ) and the statistical quantity is greater than a third preset threshold, identify the The palm pressure false touch mode occurs; wherein, _SH is a second similarity threshold.

In one embodiment, the control circuit is included in a touch and display driver integration (TDDI) chip.

In one embodiment, when a touch area of a touch panel of the touch display screen is identified as the edge false touch mode or the palm pressure false touch mode, the control circuit passes the The data compensation process thus redefines the touch area as an untouched area.

In one embodiment, the plurality of inequalities include:

CnegNew(i,j)-CnegNew(i-1,j) > CnegNewRowGapth;

CnegNew(i,j)-CnegNew(i-2,j)> CnegNewRowGapth;

CnegNew(i,j)-CnegNew(i,j-1)> CnegNewColGapth;

CnegNew(i,j)-CnegNew(i,j-2)> CnegNewColGapth;

CnegNew(i,j)<CnegNew(i+1,j);

Among them, CnegNew(i,j), CnegNew(i-1,j), CnegNew(i-2,j), CnegNew(i,j-1), CnegNew(i,j-2) and CnegNew(i+1 ,j) are all the updated negative capacitance data corresponding to a display panel coordinate, and CnegNewColGap _th and CnegNewRowGap _th are respectively an adjacent row capacitance difference threshold and an adjacent column capacitance difference threshold.

The present invention also provides a touch display device having a touch panel, a flat display panel, and a touch and display driver integrated system chip, wherein the touch and display driver integrated system chip has a control unit for executing the above The present invention is a method for preventing palm pressure accidental touch for a touch display driver integrated system.

The present invention also provides an information processing device having a touch display device including a touch panel, a flat display panel, and a touch and display driver integrated system chip, wherein the touch and display driver integrated system chip has a control The unit is used for executing the palm pressure false touch prevention method for the touch display driver integrated system of the present invention as described above.

In a feasible embodiment, the information processing device is an electronic device selected from the group consisting of a smart phone, a tablet computer, a notebook computer, an all-in-one computer, a smart watch and an access control device.

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

FIG. 4 shows a flow chart of a method for preventing palm pressure accidental touch for a touch display driver integrated system disclosed in the present invention. The present invention discloses a palm pressure false touch prevention method for a touch display driver integrated system, which is applied to a TDDI chip, and is executed by a control circuit of the TDDI chip to perform an edge false touch mode on a touch display screen and / Or the identification of a palm pressure accidental touch pattern. When the edge false touch mode and/or the palm pressure false touch mode occurs, the control circuit performs a data compensation on the no-touch reference data (BaseData) and/or the no-touch detection raw data (RawData) processing, so as to ensure that the touch display screen will not be affected by false edge touches or palm pressure false touches and cause malfunctions.

As shown in FIG. 4 , the palm pressure false touch prevention method for a touch display driver integrated system of the present invention firstly performs step S1 : performing a first feature identification process on a frame of difference data (DiffData), wherein the frame The difference data is obtained by performing a difference operation on a frame of non-touch reference raw data (BaseData) and a frame of non-touch detection raw data (RawData). As shown in FIG. 1 , when performing the touch function, the TDDI chip 21 first collects a frame of non-touch detection raw data ( RawData) to process it into a touch-free base data (BaseData), then collect multiple frames of touch detection data from the plurality of touch sensors in time, and then calculate the touch-free base data and each frame of touch The difference data (DiffData) of the detection data is processed to obtain a touch sensing value. However, in order to prevent the occurrence of false touches, after the screen of the smartphone is restarted, the TDDI chip 21 will first collect a frame of no-touch detection raw data (RawData), and then calculate the frame of the no-touch detection raw data and the original A difference data (DiffData) between the stored non-touch basic data, and then it is judged whether there is a false touch according to the difference data.

）判斷各所述差值數據(DiffData)是否滿足第一相似度特徵；其中，S_L 為一第一相似度閥值。According to the above description, therefore, the frame difference data in step S1 is obtained by performing a difference operation on a frame of non-touch reference data (BaseData) and a frame of non-touch detection raw data (RawData). And, in the step S1, the first feature identification process includes: judging whether each of the difference data (DiffData) is less than a first set threshold (Diff _th ), judging whether the frame difference data (DiffData) is Whether a number of consecutive frames is greater than a second set threshold (T _th ), and through a first set of arithmetic expressions S∈[ _SL ,

) to determine whether each of the difference data (DiffData) satisfies the first similarity feature; wherein, _SL is a first similarity threshold.

Continuing, the method flow is to execute step S2: by performing a second feature identification process on the frame difference data to obtain a plurality of negative capacitance data Cneg, and then storing the plurality of negative capacitance data Cneg as a plurality of backup negative capacitance data CNegBackup. In one embodiment, the second feature identification process includes: judging whether each of the difference data (DiffData) is smaller than a negative capacitance threshold.

Next, the method flow is to perform step S3: performing coordinate mapping processing on the plurality of backup negative capacitance data CnegBackup, thereby obtaining a plurality of updated negative capacitance data CnegNew. Continue to perform step S4: performing an edge false touch identification process on the plurality of updated negative capacitance data CnegNew. It is particularly noted that the present invention does not limit the execution scheme of the edge false touch identification process. For example, the edge false-touch recognition processing can be implemented according to the content disclosed in Taiwan Patent No. I672619, and other feasible solutions can also be referred to.

It is added that when a touch area of a touch panel of the touch display screen 20 is identified as having the edge false touch mode, the control circuit adaptively has no touch reference data for the frame (RawData), the frame without touch detection raw data (BaseData), and/or the frame difference data (DiffData) perform a data compensation process, so as to ensure that the touch display screen 20 will not be affected by edge false touches. Malfunction.

As shown in FIG. 4 , the method flow continues to execute step S4 : in the case where the edge false touch mode is not identified, a judgment procedure is performed on a plurality of the updated negative capacitance data CnegNew, so as to identify the palm pressure error touch mode. In one embodiment, the judging procedure includes the following steps:

Using a plurality of inequalities to find a judgment initial negative capacitance CengInitial from a negative capacitance region containing a plurality of the updated negative capacitance data CnegNew;

Taking the position of the judgment initial negative capacitance CengInitial as a center point, dividing the negative capacitance region into a first quadrant region, a second quadrant region, a third quadrant region, and a fourth quadrant region, and calculating the One of the statistics of a plurality of the updated negative capacitance data CnegNew whose value is greater than the judgment initial negative capacitance Cenginitial in the first quadrant area, the second quadrant area, the third quadrant area, and the fourth quadrant area ;

In the case that the updated negative capacitance data CnegNew contained in the negative capacitance region satisfies a second set operation formula S∈[ _SL , S _H ) and the statistical quantity is greater than a third set threshold (CengHiTh) , identify the occurrence of the palm pressure false touch mode; wherein, _SH is a second similarity threshold.

In more detail, the plurality of inequalities include the following five equations:

CnegNew(i,j)-CnegNew(i-1,j) > CnegNewRowGap _th (1)

CnegNew(i,j)-CnegNew(i-2,j)> CnegNewRowGap _th (2)

CnegNew(i,j)-CnegNew(i,j-1)> CnegNewColGap _th (3)

CnegNew(i,j)-CnegNew(i,j-2)> CnegNewColGap _th (4)

CnegNew(i,j)＜CnegNew(i+1,j) (5)

In the above inequalities (1)-(5), CnegNew(i,j), CnegNew(i-1,j), CnegNew(i-2,j), CnegNew(i,j-1), CnegNew(i, j-2) and CnegNew(i+1,j) are both the updated negative capacitance data CnegNew corresponding to a display panel coordinate, i and j are both positive integers, and CnegNewColGapth and CnegNewRowGapth are the capacitance difference values of an adjacent row, respectively Threshold and an adjacent column capacitance difference threshold.

When finding a judgment initial negative capacitance Cenginitial from a negative capacitance region containing a plurality of said updated negative capacitance data CnegNew using a plurality of inequalities, if the inequalities (1), (3) and (5), If the inequalities (2), (3) and (5) are satisfied at the same time, the inequalities (1), (4) and (5) are satisfied at the same time, or the inequalities (2), (4) and (5) are satisfied at the same time, the coordinate position The negative capacitance of (i, j) is regarded as the judgment initial negative capacitance Cenginitial.

After the step S5 is completed, if the control circuit recognizes that the edge false touch mode has occurred, the control circuit adaptively adjusts the frame without touch reference data (RawData) and the frame without touch detection raw data (BaseData). ), and/or a data compensation process is performed on the frame difference data (DiffData), so as to ensure that the touch display screen 20 will not be affected by the false touch of the edge and cause false action. FIG. 5A shows a table of frame difference data before data compensation is performed, and FIG. 5B shows a table of frame difference data after data compensation is completed. As shown in FIG. 5A , after steps S1 to S5 are completed, the frame difference data are marked with negative capacitance data blocks of two large area ranges. It is worth noting that the maximum and minimum values of the negative capacitance data in the two negative capacitance data blocks are 6 and -442, respectively. Moreover, as shown in FIG. 5B , after the data compensation is completed, the negative capacitance data blocks in the two large-area areas originally included in the frame difference data have been eliminated. At the same time, it can be found that after the data compensation is completed, the maximum value and the minimum value of the frame difference data are 4 and -3, respectively.

Further, FIG. 6A shows a table diagram of a frame of no-touch raw data (RawData) before data compensation is performed, and FIG. 6B shows a frame of no-touch raw data (RawData) after data compensation is completed. As shown in Figure 6A, before data compensation, due to the influence of palm pressure and accidental touch, there are two large abnormal data areas on the no-touch raw data in this frame, resulting in the maximum and minimum values of the no-touch raw data. 1183 and 845, respectively. Moreover, as shown in FIG. 6B , after the data compensation is completed, the original two large abnormal data regions in the non-touch original data of the frame have been eliminated. At the same time, it can be found that after the data compensation is completed, the maximum value and the minimum value of the non-touch original data of the frame are 1181 and 1020 respectively.

In this way, the above has completely and clearly described a palm pressure accident prevention method for a touch display driver integrated system of the present invention; and, from the above, it can be known that the present invention has the following advantages:

(1) The present invention discloses a palm pressure false touch prevention method for a touch display driver integrated system, which is applied to a TDDI chip and executed by a control circuit of the TDDI chip to perform an edge error on a touch display screen. Identification of touch mode and/or a palm pressure false touch pattern, so that the control circuit adaptively responds to no-touch reference data and /Or perform a data compensation process without touch detection raw data, so as to ensure that the touch display screen will not be affected by false edge touches or palm pressure false touches and cause false actions.

(2) The present invention also discloses an information processing device having a touch display device including a touch panel, a flat display panel, and a touch and display driver integrated system chip, wherein the touch and display driver integrated system The chip has a control unit for executing the palm pressure false touch prevention method for the touch display driver integrated system of the present invention as described above.

It must be emphasized that the above-mentioned disclosure in this case is a preferred embodiment, and any partial changes or modifications originating from the technical ideas of this case and easily inferred by those who are familiar with the art are within the scope of the patent of this case. category of rights.

To sum up, regardless of the purpose, means and effect of this case, it shows that it is completely different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. Society is to pray for the best.

2: Touch display device 20: Touch Display Screen 21: TDDI chip 211: Display driver circuit 212: touch detection circuit S1: Perform a first feature identification process on a frame of difference data, wherein the frame difference data is obtained by performing a difference operation on a frame of non-touch reference data and a frame of non-touch detection raw data S2: Obtain a plurality of negative capacitance data by performing a second feature identification process on the frame difference data, and then store the plurality of negative capacitance data as a plurality of backup negative capacitance data S3: perform a coordinate mapping process on a plurality of the backup negative capacitance data, thereby obtaining a plurality of updated negative capacitance data S4: Perform an edge false touch identification process on the plurality of updated negative capacitance data S5: Under the circumstance that the edge false touch mode is not identified, perform a judgment procedure on a plurality of the updated negative capacitance data, thereby identifying the palm pressure false touch mode

FIG. 1 is a block diagram of a conventional touch display device; FIG. 2 is a table diagram showing that the conventional TDDI chip collects a frame of non-touch detection data from a plurality of touch sensors in a palm pressure false-touch mode; 3 is a table diagram of a frame of difference data processed by a conventional TDDI chip; FIG. 4 is a flow chart of a palm pressure accident prevention method for a touch display driver integrated system disclosed by the present invention; 5A is a table diagram of frame difference data before data compensation is performed; 5B is a table diagram of a frame difference data after data compensation is completed; FIG. 6A is a table diagram of a frame of no-touch raw data before data compensation is performed; and FIG. 6B is a frame of no-touch raw data after data compensation is completed.

S1: Perform a first feature identification process on a frame of difference data, wherein the frame difference data is obtained by performing a difference operation on a frame of non-touch reference data and a frame of non-touch detection raw data

S2: Obtain a plurality of negative capacitance data by performing a second feature identification process on the frame difference data, and then store the plurality of negative capacitance data as a plurality of backup negative capacitance data

S3: perform a coordinate mapping process on a plurality of the backup negative capacitance data, thereby obtaining a plurality of updated negative capacitance data

S4: Perform an edge false touch identification process on the plurality of updated negative capacitance data

S5: Under the circumstance that the edge false touch mode is not identified, perform a judgment procedure on a plurality of the updated negative capacitance data, thereby identifying the palm pressure false touch mode

Claims (10)

A palm pressure false touch prevention method for a touch display driver integrated system is executed by a control circuit to identify an edge false touch mode and/or a palm pressure false touch mode on a touch display screen, and includes the following steps: The following steps: (1) performing a first feature identification process on a frame of difference data, wherein the frame difference data is obtained by performing a difference operation on a frame of non-touch reference data and a frame of non-touch detection raw data; (2) obtaining a plurality of negative capacitance data by performing a second feature identification process on the frame difference data, and then storing the plurality of negative capacitance data as a plurality of backup negative capacitance data; (3) a coordinate mapping process is performed to a plurality of described backup negative capacitance data, thereby obtaining a plurality of updated negative capacitance data; (4) performing an edge false touch identification process on a plurality of the updated negative capacitance data; and (5) In the case that the edge false touch mode is not identified, a judgment procedure is performed on a plurality of the updated negative capacitance data, so as to identify the palm pressure false touch mode. The palm pressure false touch prevention method for a touch display driver integration system according to claim 1, wherein the first feature identification process comprises: judging whether each of the difference data is less than a first set threshold, judging Whether a continuous frame number of the frame difference data is greater than a second set threshold, and through a first set of arithmetic expressions S∈[S _L ,

) to determine whether each of the difference data satisfies the first similarity feature; wherein, _SL is a first similarity threshold. The palm pressure false touch prevention method for a touch display driver integrated system according to claim 1, wherein the second feature identification process comprises: judging whether each of the difference data is less than a negative capacitance threshold. The palm pressure false touch prevention method for a touch display driver integrated system as claimed in claim 2, wherein the determination procedure includes the following steps: using a plurality of inequalities to self-contain a plurality of negative capacitances for updating the negative capacitance data Find a judgment initial negative capacitance in the area; take the position of the judgment initial negative capacitance as a center point, divide the negative capacitance area into a first quadrant area, a second quadrant area, and a third quadrant area , and a fourth quadrant area, and calculate the first quadrant area, the second quadrant area, the third quadrant area, and the fourth quadrant area. a statistic of the updated negative capacitance data; a plurality of the updated negative capacitance data contained in the negative capacitance region satisfy a second set operation formula S∈[ _SL , _SH ) and the statistic is greater than a third In the case of setting the threshold, the occurrence of the palm pressure false touch mode is identified; wherein, _SH is a second similarity threshold. The palm pressure false touch prevention method for a touch display driver integration system as claimed in claim 1, wherein the control circuit is included in a touch and display driver integration (TDDI) chip . According to the palm pressure false touch prevention method for a touch display driver integrated system according to claim 1, when a touch area of a touch panel of the touch display screen is identified as the edge false touch mode has occurred Or in the palm pressure false touch mode, the control circuit redefines the touch area as a non-touch area through a data compensation process. According to the method for preventing palm pressure accidental touch in a touch display driver integrated system according to claim 4, the plurality of inequalities include: CnegNew(i,j)-CnegNew(i-1,j)>CnegNewRowGap _th ; CnegNew( i,j)-CnegNew(i-2,j)>_{CnegNewRowGapth};CnegNew(i,j)-CnegNew(i,j-1)>_{CnegNewColGapth}; CnegNew(i,j)-CnegNew(i,j-2 )>CnegNewColGap _th ; CnegNew(i,j)<CnegNew(i+1,j); wherein, CnegNew(i,j), CnegNew(i-1,j), CnegNew(i-2,j), CnegNew( i,j-1), CnegNew(i,j-2) and CnegNew(i+1,j) are all the updated negative capacitance data CnegNew corresponding to a display panel coordinate, i and j are both positive integers, and CnegNewColGap _th and CnegNewRowGap _th are a capacitance difference threshold of an adjacent row and a capacitance difference threshold of an adjacent column, respectively. A touch display device has a touch panel, a flat display panel, and a touch and display driver integrated system chip, wherein the touch and display driver integrated system chip has a control unit for executing the requirements of item 1 to request The method for preventing palm pressure accidental touch for a touch display driver integrated system according to any one of Item 7. An information processing device has a touch display device including a touch panel, a flat display panel and a touch and display driver integrated system chip, wherein the touch and display driver integrated system chip has a control unit for executing The method for preventing palm pressure accidental touch for a touch display driver integrated system according to any one of claim 1 to claim 7. The information processing device according to claim 9, which is an electronic device selected from the group consisting of a smart phone, a tablet computer, a notebook computer, an all-in-one computer, a smart watch and an access control device.

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