TWI541702B - Bending detection method and bendable touch panel - Google Patents

Description

Flex detection method and flexible touch panel

The invention is a method for detecting a flexible touch panel, in particular, a method for achieving flex detection and touch detection using only a single sensing array.

The conventional display panel is made of a rigid material and cannot be flexed. It can only be used as a display function. The touchpad or touch display panel can be touched to perform certain functions, but since the display itself is still made of a rigid material, the flexing action cannot be performed.

The flexible display panel can be more conveniently used by the user without being limited by the rigid nature of the display panel. For example, the user can bend the display panel while indoors to avoid reflection of the display panel due to the indoor light source. Conventional flexible panels are combined with the touch panel, so the sensing of the touch panel input must be corrected for the flexing state of the flexing panel. Traditionally, the detection of the flexing state is performed by adding a detecting device and an inductive device to the touch panel. Therefore, the portion of the flexing that can be sensed is not the entire display panel, and the manufacturing cost is increased.

It is an object of the present invention to provide a method for detecting flex events and touch events using a single sensing array.

Another object of the present invention is to provide a flexible touch panel using a single sensing array, which can be used to simultaneously detect flexible touches. A flexing event of the control panel and a touch event, and correcting a touch position of the user on the flexible touch panel according to the flexing state of the flexible touch panel.

An embodiment of the present invention provides a method for detecting a deflection, which is applicable to a flexible touch panel having a sensing array, comprising: receiving a first sensing from the sensing array at a first time point Receiving a second sensing signal from the sensing array at a second time point; determining whether a difference between the first sensing signal and the second sensing signal is greater than a first predetermined value; When the difference is greater than the first predetermined value, a deflection state of the flexible touch panel is determined according to the difference.

Another embodiment of the present invention provides a flexible touch panel. The flexible touch panel includes a sensing array, a driving circuit, a reading circuit, and a controller. The driving circuit outputs a plurality of driving signals to the sensing array. The reading circuit reads the plurality of sensing signals generated by the sensing array back to the driving signal. The controller receives the sensing signals, and determines the flexible according to a first sensing signal at a first time point and a second sensing signal at a second time point of the sensing signals A scratched state of the touch panel.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. therefore, The directional terminology used is for the purpose of illustration and not limitation.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top plan view of an embodiment of a flexible sensing device in accordance with the present invention. The flexible sensing device 10 is disposed on a flexible display panel, but only the sensing array 12 is disposed on the display area of the flexible display panel. The flexible sensing device 10 includes a signal generating unit 11, a sensing array 12, and an interpretation unit 13. In this embodiment, the signal generating unit 11 and the determining unit 13 are implemented by hardware, or by a hardware device, such as a controller, executing different software or firmware. The sensing array 12 includes a plurality of sensing lines, such as a first sensing line X1 and a plurality of sensing columns, such as the first sensing column Y1, forming a matrix structure. The sensing array 12 is disposed in a sensing pattern layer, such as the sensing pattern layer 22 of FIG. 2, for simultaneously detecting a flexing state of the flexible sensing device 10 and sensing a touch signal or an operation gesture of the user. . In other words, the sensing array 12 of the present embodiment can be used as a sensing device of the touch panel. Compared with the prior art, the conventional flexible touch display panel must pass through a deflection detecting device to detect the deflection state of the display panel, and must sense the user through another sensing device. Touch signals are disadvantageous for manufacturing costs. However, in the present invention, only one sensing device is needed to detect the flexing state and detect the user's touch.

The signal generating unit 11 is configured to output a plurality of DC or AC driving signals to the sensing array 12, and the sensing array 12 responds to the driving signals and outputs a plurality of reading signals. The reading unit 13 receives a plurality of read signals from the sensing array, and determines a flexing state of the flexible display panel and a touch signal according to the read signals. In this embodiment, the read signals are read by the sensing lines in the sensing array 12 and the sensing columns. The value of the capacitor. The interpretation unit 13 can determine the deflection state and the touch signal according to the change of the capacitance value read at different time points.

In an embodiment, the interpretation unit 13 includes a read circuit and an arithmetic circuit. The read circuit reads the sensed lines of the sense array 12 or the read signals of the sense columns and converts them into a capacitance value. Or the read circuit directly reads the sensed rows of the sense array or the capacitance values of the sense columns. Then, the capacitance value read by the reading circuit is transmitted to the arithmetic circuit for operation with a predetermined value to obtain a capacitance difference value. The interpretation unit 13 performs the judgment of the scratching state or the touch signal according to the capacitance difference. Generally, the predetermined value is obtained by sensing all of the sensing signals on the array 12 after averaging.

When the user touches the flexible panel, the capacitance value of the touch area changes, so that the sensing columns in the sensing array 12 and the capacitance values of the sensing lines can be obtained. A standard data is obtained, and then a touch signal corresponding to the user's touch is obtained. When the flexible display panel is bent, the sensing columns in the sensing array 12 and the sensing rows may change the capacitance value due to the bending, so whether the flexible display panel can be judged according to the change of the capacitance value There is deflection. In addition, since the flexible display panel is bent, it may cause an error in detecting the touch position of the user on the display panel, so the touch of the flexible display panel may be according to the flexing state of the flexible panel. The control signal is corrected.

Figure 2 is a cross-sectional view of an embodiment of a flexible sensing device in accordance with the present invention. The sensing pattern layer 22 includes a sensing array that can be used to detect a degree of deflection of the flexible sensing device and to sense a touch position of the user. A transparent protective layer 23 is disposed on the sensing pattern layer 22 for A sensing array within the sensing pattern layer 22 is protected. The sensing pattern layer 22 is disposed on a flexible transparent substrate 21.

Figure 3 is a schematic illustration of an embodiment of a sensing array disposed on a flexible panel in accordance with the present invention. The sensing array 31 is an array structure composed of sensing columns Y1 to Y10 and sensing rows X1 to X10. The present invention is only to illustrate the subsequent deflection detection with the sensing array of FIG. 3, and is not intended to limit the invention thereto. Figure 4 is a schematic view of a flex event of the flexible panel of Figure 3. In Figure 4, the sense array is bent along the sense column Y8. Please refer to Figure 5. Figure 5 is a schematic diagram of capacitance values detected by the sensing array of Figure 4. Each sense line or each sense column of the sense array is coupled to a read circuit through which a capacitance value of each sense line and each sense column is read. The read circuit reads the capacitance value every predetermined time and stores the read capacitance value in a register or memory. Then, a controller obtains the capacitance value of each sensing row and each sensing column recorded by the reading circuit at each time point, and then determines a deflection state of the flexible panel according to the change of the capacitance value. . It can be seen from Fig. 5 that the capacitance value of the sensing column Y8 has a significant change in the time frame 51, but if the capacitance value of the sensing line X5 in the time frame 52 is observed, no similar capacitance value change will be found. . Therefore, the controller can judge the deflection state of the flexible panel at this time from the change of the capacitance values of the sensing row and the sensing column. In the present embodiment, the sensing line X5 is taken as an example, but other sensing lines, such as the sensing line X1, will have similar results.

Figure 6 is a schematic view of another flex event of the flexible panel of Figure 3. In Figure 6, the flexible panel is bent along the sense lines X2 and X8. Figure 7 is a view of the sensing array on the flexible panel according to Figure 6 Schematic diagram of the capacitance value. It can be seen from Fig. 7 that the capacitance value of the sense line X2 has a significant change in the time frame 71, and the capacitance value of the sense line X8 has a significant change in the time frame 72. In the present embodiment, the time points of the time frame 71 and the time frame 72 are different, but it is caused by detecting different time of different sensing lines. If the capacitance values of the sense line X2 and the sense line X8 are simultaneously read, similar capacitance value changes can also be found. In another embodiment, the capacitance values of sense row X2 and sense row X8 can be read simultaneously. However, if the capacitance value of the sense column Y1 is observed, there is no significant change in the capacitance value, as indicated by time frame 73. Therefore, the controller can judge the deflection state of the flexible panel at this time from the change of the capacitance values of the sensing row and the sensing column. In this embodiment, the controller can determine the degree of deflection of the flexible panel according to the degree of change of the capacitance value. In another embodiment, a capacitance change value and a deflection state table are provided, and the controller can query the corresponding deflection state based on the measured capacitance change value. The flexed state may include a flexing direction and a flexing angle.

Figure 8 is a block diagram showing a circuit block of an embodiment of a flexible touch panel in accordance with the present invention. In this embodiment, only the sensing array 801 is disposed between a transparent substrate and a protective layer to form a sensing device as shown in FIG. The sensing device is disposed over a flexible display panel having an array of pixels to form a flexible touch panel. Therefore, the flexible touch panel of FIG. 8 can display not only an image of a computer or an electronic device, but also an input device of a computer or an electronic device. In this embodiment, the electronic device may be a handheld electronic device, a smart phone, or a tablet computer. In another embodiment, the components shown in Figure 8 can all be disposed on a flexible transparent substrate. The driving circuit 802 is configured to output a plurality of The DC or AC drive signals are sent to the sensing array 801, and the sensing array 801 responds to the drive signals and outputs a plurality of read signals. Read circuit 803 receives a plurality of read signals from sense array 801 and produces corresponding digital signals. In another embodiment, the read circuit 803 reads the read signal of each sense line and each sense column of the sense array 801 and generates a corresponding capacitance value. The register 804 is configured to store a baseline change value of each sense line or sense column of the sensing array 801, that is, a capacitance change value of each sense line or sense column. The capacitance change value mentioned here refers to the difference between the capacitance value on the sensing line or the sensing column and a reference value. The comparator 805 is for comparing the baseline change value with a predetermined value, and transmitting the comparison result to the judging unit 806. The determining unit 806 determines to perform the splice detection or the location detection according to the comparison result of the comparator 805.

The determining unit 806 first compares a difference between the sensing signal or the capacitance value read by two sensing points of a sensing row or a sensing column on the sensing array with a first predetermined value. If the difference is greater than the first predetermined value, it indicates that a deflection event has occurred. Therefore, the determining unit 806 transmits the sensing signal or the difference to the deflection detecting unit 807 to determine a flexing state of the flexible touch panel. The flexed state may include a flexing direction and a flexing angle. The deflection detecting unit 807 transmits the flexed state to a host 810 and a positioning compensation unit 809. The host 810 may refer to an electronic device or a central processing unit within the electronic device. The positioning compensation unit 809 generates a correction signal to the position detecting unit 808 according to the deflection state. The determining unit 806 determines that the difference is not greater than the first predetermined value, and the determining unit 806 determines whether the received sensing signal or the capacitance value is greater than a second predetermined value. If so, it means that a touch event has occurred. Judge Unit 806 transmits the received sensed signal or capacitance value to position detection unit 808.

The location detecting unit 808 performs a positioning procedure according to the correction signal from the compensation unit 809 and the sensing signal or the capacitance value from the determining unit 806 to obtain a label data corresponding to the touch event, and transmits the coordinate data to the host. 810. The conventional touch panel only averages the sensing signals of the panel as a reference value of a predetermined value, but when the flexible touch panel is flexed, the sensing signal on the flexible touch panel is changed. Then change the reference value. As a result, a judgment error is generated in determining the touch position of the touch panel. In this embodiment, the sensing signals of each sensing column or each sensing row on the flexible touch panel are stored in a memory, and when the flexible touch panel is flexed, Instantly update the sensed signal value due to deflection. The compensation unit 809 generates the correction signal according to the updated sensing signal for adjusting the reference value of the predetermined value of the flexed portion of the flexible touch panel to improve the accuracy of the touch determination.

In another embodiment, the location detecting unit 808 corrects the sensing signal or the capacitance value from the determining unit 806 according to the correction signal from the compensation unit 809, and transmits the corrected sensing signal or capacitance value to the host 810. The positioning program is executed by the host 810 to obtain coordinate data corresponding to the touch event.

In this embodiment, the determining unit 806, the flex detecting unit 807, the positioning detecting unit 808, and the positioning compensating unit 809 can be implemented by hardware, a circuit, a logic element, or a software or firmware executed by a controller. In another embodiment, the determining unit 806, the splice detecting unit 807, the positioning detecting unit 808, and the positioning and compensating unit 809 can be integrated into a control circuit.

Figure 9 is a flow chart of an embodiment of a deflection detecting method in accordance with the present invention. In the present embodiment, the deflection detecting method is described by taking a sensing row or a sensing column of the sensing array on a flexible curved surface as an example, but the invention is not limited thereto. The deflection detecting method of this embodiment is executed by a controller. In another embodiment, a detector or a controller sequentially receives sensing signals from a plurality of sensing lines and a plurality of sensing columns to determine whether the flexible panel is deflected. In this embodiment, the sensing array can detect not only the flexing state of the flexible panel but also a touch event of the user on the flexible curved surface. In other words, the flexible panel of the present case can also be a touch panel.

In step S91, a controller receives a first sensing signal that senses a line at a first time point. In step S92, the controller receives a second sensing signal of the sensing line at a second time point. In step S93, the controller estimates a corresponding first capacitance value according to the first sensing signal, and estimates a corresponding second capacitance value according to the second sensing signal. In another embodiment, a read circuit is configured to read the first sensing signal and the second sensing signal, and convert the first sensing signal and the second sensing signal into the first capacitor The value is the same as the second capacitance value. Then, the reading circuit stores the first capacitor value and the second capacitor value in a register, and the controller can directly read the first capacitor value and the second capacitor value in the register. .

In step S94, the controller determines whether the first capacitance value is different from the second capacitance value, or whether a capacitance difference between the first capacitance value and the second capacitance value is greater than a predetermined value. If yes, step S95 is performed to transmit the difference value of the capacitance or a difference between the first sensing signal and the second sensing signal to a deflection determining unit to determine a deflection of the flexible panel. state. If not, it returns to step S91.

FIG. 10 is a flow chart of an embodiment of a touch detection method according to the present invention. In this embodiment, the touch detection method detects the capacitance value of a sensing array on the flexible touch panel, and determines whether a touch event occurs through a controller according to the detected capacitance value. . In step S101, the controller receives a sensing signal from the sensing array on the flexible touch panel, and estimates a capacitance value according to the sensing signal. In this embodiment, the controller may receive a plurality of sensing signals of the plurality of sensing lines or the plurality of sensing columns in the sensing array. In step S102, it is determined whether the capacitance value is greater than a first predetermined value or whether a capacitance difference between the capacitance value and a common capacitance is greater than a second predetermined value. If not, the flow returns to step S101. In this embodiment, a capacitance value is first estimated according to the sensing signal in step S101, but the capacitance value may not be estimated for the sensing signal. Therefore, step S102 is changed to directly judge whether the received sensing signal has a predetermined value greater than a predetermined value. If the result of the determination in step S102 is YES, step S103 is performed. The controller transmits the sensing signal, the capacitance value or the capacitance difference to a processor, and the processor performs the positioning of the touch position.

In this embodiment, the manner in which the touch position is positioned is explained as follows. It is assumed that when the controller detects that the capacitance value of the ith sensing line is greater than the first predetermined value, the controller reads the capacitance values of the plurality of sensing columns at this time. Suppose the controller detects that the capacitance value of the jth sensing column is greater than the first predetermined value, the controller will detect the capacitance value of the ith sensed row and the capacitance value of the jth sensing column. Transferred to a processor, such as a central processing unit of the computer, allows the processor to locate. In another embodiment, the controller only receives The sensing signals are included, and the sensing signals include information of a sensing column or a sensing row and information of a capacitance value.

The method of detecting the deflection of FIG. 9 and the method of detecting the touch of FIG. 10 may be performed by a software, a firmware or a hardware. In the present specification, the deflection detection method of FIG. 9 and the touch detection method of FIG. 10 are implemented by using the same sensing array. In addition, the value of the capacitance change caused by the deflection of the flexible touch panel is relatively small, and if the touch panel is touched, the capacitance change caused by the touch panel is relatively large.

11 is a flow chart of an embodiment of an operational method of a flexible touch panel in accordance with the present invention. In this embodiment, the flexible touch panel includes a sensing array and a controller. In step S111, the controller receives a first sensing signal of a sensing array at a first time point. In step S112, the controller receives a second sensing signal of the sensing array at a second time point. Next, in step S113, the controller determines whether the first sensing signal is different from the second sensing signal, or whether a difference between the first sensing signal and the second sensing signal is greater than a first predetermined value. In another embodiment, the controller converts the first sensing signal into a first capacitance value and the second sensing signal into a second capacitance value. Then, the controller determines whether the first capacitance value is different from the second capacitance value, or whether a difference between the first capacitance value and the second capacitance value is greater than a predetermined capacitance value. If the result of step S113 is YES, step S114 is performed. In step S114, the controller transmits a difference between the first sensing signal and the second sensing signal to a deflection determining unit to determine a flexing state of the flexible touch panel. If the result of step S113 is NO, step S115 is performed. In step S115, the controller receives a third sensing signal of the sensing array. Then control The step S116 is performed to determine whether the third sensing signal is greater than a second predetermined value. If the result of step S117 is NO, the process returns to step S111. If the result of step S117 is YES, it indicates that a touch event has occurred. The controller executes step S117 to transmit the third sensing signal to a processor to perform a positioning procedure.

Figure 12 is a flow chart showing another embodiment of a method of operating a flexible touch panel in accordance with the present invention. In this embodiment, the flexible touch panel includes a sensing array and a controller. The method of FIG. 12 differs from the method of FIG. 11 in the method of FIG. 12 to first detect whether a touch event occurs, and then detect whether a scratching event occurs. The method described in FIG. 11 first detects whether a scratching event occurs, and then detects whether a touch event occurs. In step S121, the controller first receives a third sensing signal from the sensing array. In step S122, it is determined whether the third sensing signal is greater than a predetermined predetermined value. If the result of step S122 is YES, it indicates that a touch event has occurred. The controller executes step S123 to transmit the third sensing signal to a processor to perform a positioning procedure. If the result of step S122 is NO, the controller executes step S124. In step S124, the controller receives a first sensing signal of the sensing array at a first time point. In step S125, the controller receives a second sensing signal of the sensing array at a second time point. Then, in step S126, the controller determines whether the first sensing signal is different from the second sensing signal, or whether a difference between the first sensing signal and the second sensing signal is greater than a first predetermined value. In another embodiment, the controller converts the first sensing signal into a first capacitance value and the second sensing signal into a second capacitance value. Then, the controller determines whether the first capacitance value and the second capacitance value are different, or the first capacitance value Whether a difference from the second capacitance value is greater than a predetermined capacitance value. If the result of step S126 is YES, indicating that a deflection event has occurred, the controller proceeds to step S127. In step S127, the controller sends a difference between the first sensing signal and the second sensing signal to a deflection determining unit to determine a flexing state of the flexible touch panel. If the result of step S126 is NO, the process returns to step S121.

13A and 13B are flowcharts showing an embodiment of a method for detecting and correcting a touch of a flexible touch panel according to the present invention. The splice detection and touch correction method of this embodiment is performed by a controller. In step S1301, a controller receives a first sensing signal of a sensing array at a first time point, and estimates a corresponding first capacitance value according to the first sensing signal. In step S1302, the controller receives a second sensing signal of the sensing array at a second time point, and estimates a corresponding second capacitance value according to the second sensing signal. In step S1303, the controller determines whether the first capacitance value is different from the second capacitance value, or whether a capacitance difference between the first capacitance value and the second capacitance value is greater than a predetermined value. If YES in step S1303, step S1304 is performed to transmit the capacitance difference to a deflection determining unit to determine a flexing state of the flexible touch panel. If the step S1303 is NO, the process proceeds to step S1308, and the controller determines whether a change amount of the first sensing signal and the second sensing signal satisfies a predetermined time. Step S1308 indicates whether the controller has received the change amount of the plurality of sensing signals or the sensing signals that meet the flexing event for a certain period of time. If YES in step S1308, step S1309 is performed, and if NO, step S1301 is returned. In step S1309, the controller may be based on the first sensing signal and the second sensing signal or the first sense A difference between the measured signal and the second sensed signal produces a corrected signal of the touch signal and a corresponding correction value is generated. Next, in step S1310, the controller adjusts and generates a predetermined value of the current touch signal detection according to the correction value and an initial predetermined value. In step S1305, the controller receives a third sensing signal. Then, in step S1306, the controller generates a corresponding third capacitance value according to the third sensing signal, and determines whether the third capacitance value is greater than the first predetermined value. If YES in step S1306, indicating that a touch event occurs, the controller transmits the third sensing signal or the third capacitance value to a processor in step S1307, such as a flexible touch. A central processing unit of an electronic device connected to the control panel to obtain a standard information of the touch event.

14A and 14B are flow charts showing another embodiment of a method for detecting and correcting a flexible touch panel according to the present invention. The detection and correction method of this embodiment is performed by a controller. In step S1401, the controller receives a first sensing signal. In step S1402, the controller generates a corresponding first capacitance value according to the first sensing signal, and determines whether the first capacitance value is greater than a first predetermined value. If YES in step S1402, indicating that a touch event occurs, the controller transmits the first sensing signal or the first capacitance value to a processor, such as a central processing unit of the computer, in step S1403. The processor determines a landmark data of the touch event. If NO in step S1402, step S1404 is performed. In step S1404, the controller receives a second sensing signal of a sensing array of the flexible touch panel at a first time point, and estimates a corresponding second capacitance value according to the first sensing signal. In step S1405, the controller receives a third sensing signal of the sensing array at a second time point, and according to the third sensing The signal estimates a corresponding third capacitance value. In step S1406, the controller determines whether the second capacitance value is different from the third capacitance value, or whether a capacitance difference between the second capacitance value and the third capacitance value is greater than a second predetermined value. If YES in step S1406, step S1407 is performed to transmit the capacitance difference value or a capacitance difference between the second sensing signal and the third sensing signal to a deflection determining unit to determine the flexible touch. A flexed state of the panel. If the step S1406 is NO, the process proceeds to step S1408, and the controller determines whether a change amount of the second sensing signal and the third sensing signal satisfies a predetermined time. If YES in step S1408, step S1409 is performed, and if NO in step S1408, step S1401 is returned. In step S1409, the controller generates a correction signal of the touch signal according to the second sensing signal and the third sensing signal, and generates a corresponding correction value. Next, in step S1410, the controller adjusts and generates the first predetermined value in step S1402 according to the correction value and an initial predetermined value.

Among the methods described in FIGS. 11 to 14, the following several judgment principles are mainly included. First, when the controller of the flexible touch panel receives a sensing signal transmitted by a sensing array on the touch panel, it first determines whether the sensing signal is greater than a first predetermined value to determine whether there is a A touch event occurs. In the foregoing embodiments, the sensing signal may be an analog or digital pattern, and the sensing signal corresponds to a capacitance value. Therefore, the controller can first convert the sensing signal into a capacitance value and then perform subsequent actions. If the controller determines that the sensing signal is not greater than a first predetermined value, the controller then determines whether a difference between the two consecutive sensing signals is greater than a second predetermined value to determine whether a scratching event occurs. If not, the controller continues to receive the sensed signal from the sense array and repeats the aforementioned determination. If the controller determines that a scratching event occurs, a difference between the two consecutive sensing signals is transmitted to a processor to determine a flexing state of the flexible touch panel and generate a correction value. And used to correct the first predetermined value. In the present invention, both the scratching event and the detection of the touch event are judged by the sensing signals generated by the same sensing array. This can reduce the design complexity of the flexible touch panel and reduce the cost of the flexible touch panel.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10‧‧‧Flexible sensing device

11‧‧‧Signal generating unit

12, 31‧‧‧ Sense array

13‧‧‧Interpretation unit

21‧‧‧Transparent substrate

22‧‧‧Induction pattern layer

23‧‧‧Protective layer

801‧‧‧Sensor array

802‧‧‧ drive circuit

803‧‧‧Read circuit

804‧‧‧ register

805‧‧‧ comparator

806‧‧‧judging unit

807‧‧‧Scratch detection unit

808‧‧‧Location Detection Unit

809‧‧‧ Positioning compensation unit

810‧‧‧Host

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top plan view of an embodiment of a flexible sensing device in accordance with the present invention.

Figure 2 is a cross-sectional view of an embodiment of a flexible sensing device in accordance with the present invention.

Figure 3 is a schematic illustration of an embodiment of a sensing array disposed on a flexible panel in accordance with the present invention.

Figure 4 is a schematic view of a flex event of the flexible panel of Figure 3.

Figure 5 is a schematic diagram of capacitance values detected by the sensing array of Figure 4.

Figure 6 is a schematic view of another flex event of the flexible panel of Figure 3.

Figure 7 is a diagram showing the capacitance values detected by the sensing array on the flexible panel according to Figure 6.

Figure 8 is a block diagram showing a circuit block of an embodiment of a flexible touch panel in accordance with the present invention.

Figure 9 is a flow chart of an embodiment of a deflection detecting method in accordance with the present invention.

FIG. 10 is a flow chart of an embodiment of a touch detection method according to the present invention.

11 is a flow chart of an embodiment of an operational method of a flexible touch panel in accordance with the present invention.

Figure 12 is a flow chart showing another embodiment of a method of operating a flexible touch panel in accordance with the present invention.

13A, 13B are diagrams showing a flexible touch panel according to the present invention A flowchart of an embodiment of a splice detection and touch correction method.

14A and 14B are flow charts showing another embodiment of a method for detecting and correcting a flexible touch panel according to the present invention.

10‧‧‧Flexible sensing device

11‧‧‧Signal generating unit

12‧‧‧Sensor array

13‧‧‧Interpretation unit

Claims (15)

A flex detection method is applicable to a flexible touch panel having a sensing array, comprising: receiving a sensing line or a sensing column from the sensing array at a first time point a sensing signal; receiving a second sensing signal from the sensing line or the sensing column at a second time point; determining whether a difference between the first sensing signal and the second sensing signal is greater than a first predetermined value; and when the difference is greater than the first predetermined value, determining a deflection state of the flexible touch panel based on the difference. The method for detecting a deflection according to claim 1, further comprising: generating a correction signal according to the difference; and receiving a third sensing signal corresponding to the touch event when a touch event occurs And performing a positioning procedure according to the third sensing signal and the correction signal. The method for detecting a deflection according to claim 1, further comprising: generating a correction signal according to the difference; receiving a third sensing signal; and determining whether the third sensing signal is greater than a second predetermined value. And when the third sensing signal is greater than the second predetermined value, performing a positioning procedure according to the third sensing signal and the correction signal. The method for detecting a deflection as described in claim 1, wherein The flexing state includes a flexing direction and a flexing angle. The method for detecting a deflection according to claim 1, further comprising: determining the deflection when the difference between the first sensing signal and the second sensing signal is greater than the first predetermined value Receiving a third sensing signal; determining whether the third sensing signal is greater than a second predetermined value; determining that a touch event occurs when the third sensing signal is greater than the second predetermined value; The third sensing signal and the correction signal perform a positioning procedure. The method for detecting a deflection according to claim 5, further comprising: performing a positioning procedure according to the third sensing signal to obtain a target data corresponding to the touch event. A flexible touch panel includes: a sensing array; a driving circuit for outputting a plurality of driving signals to the sensing array; and a reading circuit for reading a plurality of driving signals generated by the sensing array Sensing signal; a controller receiving the sensing signals, and according to the first sensing signal at a first time point and a second sensing signal at a second time point in the sensing signals When the difference between the first sensing signal and the second sensing signal is greater than a first predetermined value, the controller determines that the deflection event occurs, and determines the flexible touch according to the difference A deflection state of the control panel. The flexible touch panel of claim 7, wherein the flexing state comprises a flexing direction and a flexing angle. The flexible touch panel of claim 7, wherein when the controller receives a third sensing signal, determining whether the third sensing signal is greater than a second predetermined value, and when When the third sensing signal is greater than the second predetermined value, the controller determines that a touch event occurs, and the controller transmits the third sensing signal to a processor. The flexible touch panel of claim 7, wherein the processor performs a positioning process according to the third sensing signal to obtain a target data corresponding to the touch event. The flexible touch panel of claim 10, wherein the processor is a central processor of an electronic device connected to the flexible touch panel. The flexible touch panel of claim 7, wherein when the controller receives a third sensing signal, the controller determines whether the third sensing signal is greater than a second predetermined value, And when the third sensing signal is greater than the second predetermined value, the controller determines that the touch event occurs, and the controller generates a target data corresponding to the touch event according to the third sensing signal. The flexible touch panel of claim 7, wherein the controller is based on the difference when the difference between the first sensing signal and the second sensing signal is greater than the first predetermined value. A correction signal is generated. The flexible touch panel of claim 13, wherein when the controller receives a third sensing signal, the controller determines whether the third sensing signal is greater than a second predetermined value, And when the third sensing When the signal is greater than the second predetermined value, the controller determines that the touch event occurs, and the controller generates a target data corresponding to the touch event according to the third sensing signal and the correction signal. A flex detection method is applicable to a flexible touch panel having a sensing array, comprising: receiving a sensing line or a sensing column from the sensing array at a first time point a sensing signal; receiving a second sensing signal from the sensing line or the sensing column at a second time point; determining whether a difference between the first sensing signal and the second sensing signal is greater than a first predetermined value; when the difference is greater than the first predetermined value, determining that the flexible touch panel is flexed; and if the first sensing signal or the second sensing signal is greater than a second predetermined A value is determined to be that the flexible touch panel is touched.