A touch screen based on contact induction and its detection system

Abstract

The present invention relates to the field of touch screen technology, and in particular to a touch screen based on contact point sensing and a detection system thereof, the system comprising a screen structure information acquisition module, which is used to acquire screen structure information; a bending ratio analysis module, which is used to calculate bending loss parameters according to the stretching ratio of the bending portion and the basic ratio of the straight portion, and to determine various detection angles and a number of detection points according to the bending angle range of the screen bending portion; a bending detection module, which is used to detect the bending portion of the touch screen using a detection needle with different contact areas at the contact end; a detection analysis module, which is used to determine the triggering accuracy of the bending portion according to the detection needle excitation position information and the actual excitation point information, and to calculate the optimal working bending range of the bending portion according to the triggering accuracy at each detection angle; the present invention improves the detection accuracy of the touch screen by improving the triggering accuracy of the bending part of the touch screen.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screens, and in particular to a touch screen based on contact point sensing and a detection system thereof. Background Art

[0002] With the development of high performance and diversification of various electronic devices such as mobile phones and tablet computers, traditional two-dimensional touch screens can no longer meet users' demand for flexible touch, and the flexible touch screen industry has rapidly emerged. However, compared with the contact point detection system of the traditional two-dimensional touch screen, the flexible touch screen needs to accurately detect the contact points of the bending part, but the traditional touch screen detection system based on contact sensing cannot accurately detect the contact points of the bending part, resulting in low detection accuracy of the flexible touch screen.

[0003] Chinese patent application publication number: CN102999193B discloses a method for detecting touch points of a touch screen, the touch screen has a conductive film with impedance anisotropy, a plurality of driving electrode pairs are arranged along the low impedance direction of the conductive film, each driving electrode pair includes a first driving electrode and a second driving electrode, the detection method includes the following steps: scanning the electrode pairs to obtain a plurality of electrical signals, and judging the coordinate X of the touch point in the high impedance direction by the plurality of electrical signals; selecting a plurality of electrode pairs near the coordinate X, and obtaining an electrode pair signal value Psum according to the electrical signals of the plurality of electrode pairs; scanning the plurality of first driving electrodes to obtain a first electrical signal value Msum; scanning the plurality of second driving electrodes to obtain a second electrical signal value Nsum; and judging the coordinate Y of the touch point in the low impedance direction of the conductive film by the Psum, Msum and Nsum.

[0004] It can be seen that the prior art has the problem that the triggering accuracy detection of the contact points of the bending part of the bendable touch screen is not accurate enough, resulting in failure to determine the optimal working bending range of the bendable touch screen and failure to timely detect the touch screen with low touch accuracy. Summary of the invention

[0005] To this end, the present invention provides a touch screen based on contact point sensing and a detection system thereof to overcome the problems in the prior art.

[0006] To achieve the above object, the present invention provides a touch screen detection system based on contact point sensing, comprising:

[0007] A screen structure information acquisition module, which is used to obtain the bending angle range of the screen bending portion, the screen bending ratio and the screen straight ratio;

[0008] A bending ratio analysis module, which is connected to the screen structure information acquisition module, is used to calculate the bending loss parameter according to the stretching ratio of the bending portion and the basic ratio of the straight portion, and to calculate the number of detection angles according to the bending angle range of the screen bending portion to determine each detection angle, and to determine a number of detection points at each detection angle;

[0009] A bending detection module, which is connected to the bending ratio analysis module, is used to use the detection target to touch or slide each detection point to obtain the actual excitation point information on the touch screen, and to use the detection target with different contact areas at the contact end to detect the bending part of the touch screen; wherein the threshold of the contact area is determined based on the bending width of the bending part;

[0010] A detection and analysis module, which is connected to the bending detection module, is used to determine the triggering accuracy of the bending portion according to the detection needle excitation position information and the actual excitation point information, and to determine the triggering adaptability of the bending portion based on the triggering accuracy calculated by the detection needles of each contact area, and to calculate the optimal working bending range of the bending portion according to the triggering accuracy at each detection angle;

[0011] The adjustment module is connected to the detection and analysis module and is used to determine whether to adjust the parameters of the touch screen detection process according to the comparison result between the contact point reaction sensitivity within the optimal working bending range and the preset reaction sensitivity.

[0012] Furthermore, the bending ratio analysis module determines the bending loss parameter according to the absolute value of the difference between the stretching ratio of the bending portion and the basic ratio of the straight portion.

[0013] Furthermore, the bending ratio analysis module determines a number of detection points at each detection angle. The number of detection points at each detection angle is determined according to the bending loss parameter, and the detection points are located at the junction of the bending portion and the straight portion.

[0014] Furthermore, the bending detection module uses a detection method with a contact end having different contact areas to perform a touch or a slide touch on each detection point to obtain information on actual excitation points on the touch screen.

[0015] Furthermore, the threshold of the contact area is determined based on a bending width of the bending portion.

[0016] Furthermore, the detection and analysis module determines the triggering accuracy of the bending portion according to an average value of the overlap between the excitation position information of a plurality of detection needles and the actual excitation point information.

[0017] Furthermore, the detection and analysis module determines the trigger adaptability of the bending portion according to the variation range of the trigger accuracy calculated by the detection needles of each contact area under the condition of determining the trigger accuracy of the bending portion.

[0018] Furthermore, the detection and analysis module calculates the optimal working bending range of the bending portion according to the comparison result of the triggering accuracy at each detection angle and the preset triggering accuracy, wherein:

[0019] The detection and analysis module determines that the working bending angle of the bending portion is unqualified according to the comparison result that the trigger accuracy is less than the preset trigger accuracy;

[0020] The detection and analysis module determines that the working bending angle of the bending portion is qualified according to the comparison result that the trigger accuracy is greater than or equal to the preset trigger accuracy.

[0021] Furthermore, the adjustment module determines adjustment of the touch screen detection process parameters according to a comparison result that the contact point reaction sensitivity within the optimal working bending range is less than a preset reaction sensitivity, wherein the touch screen detection process parameters include a preset trigger accuracy.

[0022] A touch screen detected by the above-mentioned touch screen detection system based on contact point sensing comprises:

[0023] Flexible touch screens, which maintain image clarity and stability when bent, allowing the screen to adapt to a variety of shapes;

[0024] The circuit layer is used to transmit electrical signals and pass the user's touch input signal to the controller so that the system can accurately capture and process the user's touch operation;

[0025] A flexible bottom plate, which is used to support the bending of the flexible display screen. The flexible bottom plate is made of a flexible material to ensure that the screen and circuit are not damaged in the bent state;

[0026] The flexible touch screen, the circuit layer and the flexible bottom plate all include a bending portion and a straight portion, the bending portion is made of a flexible material, and the straight portion is made of a rigid material.

[0027] Compared with the prior art, the beneficial effect of the present invention lies in that, the present invention compares the number of effective detection points of the bending portion and the number of effective detection points of the straight portion with the same area as the bending portion through the bending ratio analysis module to determine the bending loss parameter, and then evaluates the performance loss of the touch screen during the bending process. The bending ratio analysis module determines each detection angle according to the angle range of the bending portion, and improves the accuracy of the triggering accuracy detection of the contacts of the bending part of the bendable touch screen by detecting a variety of different detection angles.

[0028] Furthermore, the present invention determines the number of detection points at each detection angle through the bending loss parameter, thereby avoiding the problem of low contact accuracy detection accuracy caused by the number of detection points selected being greater than the number of effective detection points in the bending portion. By selecting the detection points at the junction of the bending portion and the straight portion, the detection accuracy of the contact accuracy in the bending portion can be enhanced. The above method improves the accuracy of the triggering accuracy detection of the contacts in the bending portion of the bendable touch screen, thereby determining the optimal working bending range of the bendable touch screen and timely detecting the touch screen with low touch accuracy.

[0029] Furthermore, the present invention determines the triggering accuracy of the bending part according to the average value of the overlap between the excitation position information of several detection needles and the actual excitation point information through the detection and analysis module, thereby improving the accuracy of the triggering accuracy detection of the contacts in the bending part of the bendable touch screen and thereby determining the optimal working bending range of the bendable touch screen and timely detecting the touch screen with low touch accuracy.

[0030] Furthermore, the present invention can understand the degree of change in the triggering accuracy of different contact areas of the bending portion when the bending portion is in a bent state by calculating the change range of the triggering accuracy of the detection needle of each contact area. This helps to evaluate the influence of the contact area on the triggering function of the touch screen, thereby determining the accuracy of the touch screen at different bending degrees, and evaluating the triggering adaptability of the bending portion according to the change range of the triggering accuracy, that is, whether the triggering function of the touch screen can work stably under different contact areas. This helps manufacturers determine the reliability and stability of the touch screen and ensure that the product performs well in actual use. Ensuring the triggering adaptability of the bending portion can improve the user experience and enable users to obtain accurate and stable trigger responses when using the bent touch screen, thereby enhancing the reliability and functionality of the product.

[0031] Furthermore, by comparing the trigger accuracy at each detection angle with the preset trigger accuracy, the present invention can calculate the trend of how the trigger accuracy changes with the degree of bending. According to this trend, manufacturers and designers can determine the optimal working bending range of the touch screen, that is, the trigger accuracy can be maintained at an acceptable level within this range. Understanding how the trigger accuracy changes with the degree of bending is helpful in optimizing the design of the bending portion. By determining the optimal working bending range, the designer can adjust the structure and material of the bending portion to improve the stability and accuracy of the trigger accuracy. Determining the optimal working bending range can ensure that the touch screen can provide a stable and accurate trigger response in actual use, thereby improving the performance and reliability of the product, which helps to enhance the user experience and reduce the failure rate of the product in a bent state. Determination of the optimal working bending range can provide guidance for product testing and quality control.

[0032] Furthermore, the present invention can determine the actual contact response of the touch screen in a bent state by comparing the contact response sensitivity within the optimal working bending range with the preset response sensitivity. According to the comparison results, manufacturers and designers can adjust the detection process parameters to optimize the contact response sensitivity of the touch screen to ensure that the product performance meets expectations. Adjusting the detection process parameters can help improve the performance and stability of the touch screen. By adjusting the parameters according to actual conditions, the touch screen can still provide accurate and sensitive touch response in a bent state, thereby improving the quality of the product and user experience. Adjusting the detection process parameters according to the comparison results of the contact response sensitivity can adapt the touch screen to different working environments and usage scenarios. Adjusting the parameters can improve the adaptability of the touch screen under different bending degrees and ensure that the product can work normally under various conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a touch screen detection system based on contact point sensing according to an embodiment of the present invention;

[0034] Figure 2 This is a working flow chart of an adjustment module of a touch screen detection system based on contact point sensing according to an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the structure of detection pins with different contact areas in a touch screen detection system based on contact point sensing according to an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of the structure of a touch screen detected by a touch screen detection system based on contact point sensing according to an embodiment of the present invention;

[0037] In the figure, 100, first detection needle; 200, second detection needle; 1, bending portion; 2, straight portion; 3, flexible touch screen; 4, circuit layer; 5, flexible base plate. DETAILED DESCRIPTION

[0038] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0040] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] See also Figure 1-Figure 3 As shown, Figure 1 It is a structural schematic diagram of a touch screen detection system based on contact point sensing according to an embodiment of the present invention; Figure 2 This is a working flow chart of an adjustment module of a touch screen detection system based on contact point sensing according to an embodiment of the present invention; Figure 3 The present invention is a schematic diagram of the structure of detection pins with different contact areas in a touch screen detection system based on contact point sensing according to an embodiment of the present invention.

[0043] The touch screen detection system based on contact point sensing in the embodiment of the present invention includes:

[0044] A screen structure information acquisition module, which is used to obtain the bending angle range of the screen bending portion, the screen bending ratio and the screen straight ratio;

[0045] A bending ratio analysis module, which is connected to the screen structure information acquisition module, is used to calculate the bending loss parameter according to the stretching ratio of the bending portion and the basic ratio of the straight portion, and to calculate the number of detection angles according to the bending angle range of the screen bending portion to determine each detection angle, and to determine a number of detection points at each detection angle;

[0046] A bending detection module, which is connected to the bending ratio analysis module, is used to use the detection target to touch or slide each detection point to obtain the actual excitation point information on the touch screen, and to use the detection target with different contact areas at the contact end to detect the bending part of the touch screen; wherein the threshold of the contact area is determined based on the bending width of the bending part;

[0047] A detection and analysis module, which is connected to the bending detection module, is used to determine the triggering accuracy of the bending portion according to the detection needle excitation position information and the actual excitation point information, and to determine the triggering adaptability of the bending portion based on the triggering accuracy calculated by the detection needles of each contact area, and to calculate the optimal working bending range of the bending portion according to the triggering accuracy at each detection angle;

[0048] The adjustment module is connected to the detection and analysis module and is used to determine whether to adjust the parameters of the touch screen detection process according to the comparison result between the contact point reaction sensitivity within the optimal working bending range and the preset reaction sensitivity.

[0049] Specifically, the bending ratio analysis module determines the bending loss parameter according to the absolute value of the difference between the stretching ratio of the bending portion and the basic ratio of the straight portion and the ratio of the basic ratio of the straight portion.

[0050] The stretching ratio of the bending portion in the embodiment of the present invention is the ratio of the effective detection points of the bending portion to the area of ​​the bending portion, and the basic ratio of the straight portion is the ratio of the effective detection points of the straight portion to the area of ​​the straight portion. When calculating the bending loss parameter, the area of ​​the straight portion that is the same as the area of ​​the bending portion should be selected as the calculation parameter. For example, if the area of ​​the bending portion is 4 square centimeters and the number of effective detection points is 40, then the stretching ratio of the bending portion is 10. If the area of ​​the straight portion is 4 square centimeters and the number of effective detection points is 50, then the basic ratio of the straight portion is 12.5, and the bending loss parameter is 0.2.

[0051] Specifically, the bending ratio analysis module calculates the number of detection angles according to the bending angle range of the screen bending portion to determine each detection angle, and the value of each detection angle is one tenth of the difference between the maximum angle and the minimum angle in the bending angle range of the screen bending portion.

[0052] In an embodiment of the present invention, if the bending angle range of the bending portion of the screen is 90 degrees-180 degrees, the values ​​of each detection angle are 90 degrees, 99 degrees, 108 degrees, 117 degrees, 126 degrees, 135 degrees, 144 degrees, 153 degrees, 162 degrees, 171 degrees, and 180 degrees, respectively.

[0053] The present invention uses the bending ratio analysis module to compare the number of effective detection points of the bending portion and the number of effective detection points of the straight portion with the same area as the bending portion to determine the bending loss parameter, and then evaluate the performance loss of the touch screen during the bending process. The bending ratio analysis module determines each detection angle according to the angle range of the bending portion, and improves the accuracy of the triggering accuracy detection of the contacts of the bending part of the bendable touch screen by detecting a variety of different detection angles.

[0054] Specifically, the bending ratio analysis module determines a number of detection points at each detection angle. The number of detection points at each detection angle is determined according to the bending loss parameter. The detection points are located at the junction of the bending portion and the straight portion.

[0055] In the embodiment of the present invention, the number of detection points at each detection angle is the product of the number of effective detection points in the straight portion having the same area as the bending portion, 1, and the bending loss parameter difference. For example, the number of effective detection points in the straight portion having the same area as the bending portion is 100, and the bending loss parameter is 0.3, then the number of detection points at each detection angle is 70, and the detection points are evenly selected at the junction of the bending portion and the straight portion.

[0056] The present invention determines the number of detection points at each detection angle through the bending loss parameter, so as to avoid the problem of low electric shock detection accuracy caused by the number of detection points selected being greater than the number of effective detection points of the bending portion. By selecting the detection points at the junction of the bending portion and the straight portion, the detection accuracy of the contact points in the bending portion can be enhanced. The above method improves the accuracy of the triggering accuracy detection of the contacts in the bending portion of the bendable touch screen, thereby determining the optimal working bending range of the bendable touch screen and timely detecting the touch screen with low touch accuracy.

[0057] Specifically, the bending detection module uses a contact end with different contact areas to perform point touch or slide touch on each detection point to obtain actual excitation point information on the touch screen, and the threshold of the contact area is determined based on the bending width of the bending portion.

[0058] In the embodiment of the present invention, the thresholds of the contact area are one fifth, two fifths and three fifths of the bending width of the bending portion.

[0059] Specifically, the detection and analysis module determines the triggering accuracy of the bending portion according to the average value of the overlap between the excitation position information of a plurality of detection needles and the actual excitation point information. The triggering accuracy P is calculated and set by the following formula:

[0060]

[0061] Among them, N represents the number of detection points for the detection needle to carry out the excitation position information, Si represents the overlapping area between the detection needle excitation position and the actual excitation position of the i-th detection point, and Si0 represents the area of ​​the detection needle excitation position of the i-th detection point.

[0062] The degree of overlap between the detection needle excitation position information and the actual excitation point information in the embodiment of the present invention is the ratio of the overlap area between the detection needle excitation position and the actual excitation position to the area of ​​the detection needle excitation position.

[0063] The present invention determines the triggering accuracy of the bending part according to the average value of the overlap between the excitation position information of several detection needles and the actual excitation point information through the detection and analysis module, thereby improving the accuracy of the triggering accuracy detection of the contacts in the bending part of the bendable touch screen, thereby determining the optimal working bending range of the bendable touch screen and timely detecting the touch screen with low touch accuracy.

[0064] Specifically, the detection and analysis module determines the trigger adaptability of the bending portion according to the variation range of the trigger accuracy calculated by the detection needles of each contact area under the condition of determining the trigger accuracy of the bending portion;

[0065] In a specific embodiment, if S≥S0, the detection and analysis module determines that the trigger adaptability of the bending portion is unqualified;

[0066] If S<S0, the detection and analysis module determines that the trigger adaptability of the bending portion is qualified;

[0067] Among them, S0 represents a preset change amplitude, and the value of the preset change amplitude S0 is one tenth of the trigger accuracy, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0068] The variation range of the trigger accuracy in the embodiment of the present invention is the sum of the absolute values ​​of the differences between the trigger accuracy calculated by the detection frame of each contact area and the trigger accuracy calculated by the first detection frame.

[0069] The present invention calculates the variation range of the triggering accuracy of the detection needle of each contact area, so as to understand the variation degree of the triggering accuracy of different contact areas of the bending part in the bending state. This helps to evaluate the influence of the contact area on the triggering function of the touch screen, thereby determining the accuracy of the touch screen under different bending degrees. The triggering adaptability of the bending part is evaluated according to the variation range of the triggering accuracy, that is, whether the triggering function of the touch screen can work stably under different contact areas. This helps manufacturers to determine the reliability and stability of the touch screen and ensure that the product performs well in actual use. Ensuring the triggering adaptability of the bending part can improve the user experience and enable users to obtain accurate and stable trigger responses when using the bent touch screen, thereby enhancing the reliability and functionality of the product.

[0070] Specifically, the detection and analysis module calculates the optimal working bending range of the bending portion according to the comparison result of the triggering accuracy at each detection angle and the preset triggering accuracy, wherein:

[0071] The detection and analysis module determines that the working bending angle of the bending portion is unqualified according to the comparison result that the trigger accuracy is less than the preset trigger accuracy;

[0072] The detection and analysis module determines that the working bending angle of the bending portion is qualified according to the comparison result that the trigger accuracy is greater than or equal to the preset trigger accuracy.

[0073] In a specific embodiment, if P<P0, the detection and analysis module determines that the working bending angle of the bending portion is unqualified;

[0074] If P≥P0, the detection and analysis module determines that the working bending angle of the bending portion is qualified;

[0075] Among them, the value range of the preset trigger accuracy P0 is set to 0.7-1, and the value of the preset trigger accuracy P0 is 0.85, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0076] The optimal working bending range of the bending portion in the embodiment of the present invention is the working bending angle range of the bending portion when the trigger accuracy is greater than or equal to the preset trigger accuracy. For example, the working bending angle of the bending portion when the trigger accuracy is greater than or equal to the preset trigger accuracy is 90 degrees-120 degrees and 150 degrees-160 degrees, then the optimal working bending range is 90 degrees-120 degrees and 150 degrees-160 degrees.

[0077] By comparing the trigger accuracy at each detection angle with the preset trigger accuracy, the present invention can calculate the trend of how the trigger accuracy changes with the degree of bending. According to this trend, manufacturers and designers can determine the optimal working bending range of the touch screen, that is, the trigger accuracy can be maintained at an acceptable level within this range. Understanding how the trigger accuracy changes with the degree of bending is helpful to optimize the design of the bending portion. By determining the optimal working bending range, the designer can adjust the structure and material of the bending portion to improve the stability and accuracy of the trigger accuracy. Determining the optimal working bending range can ensure that the touch screen can provide a stable and accurate trigger response in actual use, thereby improving the performance and reliability of the product, which helps to enhance the user experience and reduce the failure rate of the product in a bent state. Determination of the optimal working bending range can provide guidance for product testing and quality control.

[0078] Specifically, the adjustment module determines whether to adjust the parameters of the touch screen detection process according to the comparison result of the contact point reaction sensitivity D within the optimal working bending range and the preset reaction sensitivity D0;

[0079] If D≥D0, the adjustment module determines that the parameters of the touch screen detection process do not need to be adjusted;

[0080] If D<D0, the adjustment module determines that the parameters of the touch screen detection process need to be adjusted;

[0081] The preset value of the reaction sensitivity D0 is the historical average value of the touch screen contact reaction sensitivity, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0082] The touch screen detection process parameters in the embodiment of the present invention include a preset trigger accuracy. The contact response sensitivity is the ratio of the accurate number of contact responses within the optimal working bending range to the total number of contact triggers. The larger the ratio, the greater the contact response sensitivity.

[0083] Specifically, under the condition that the adjustment module determines that the parameters of the touch screen detection process need to be adjusted, the adjustment module determines to adjust the preset trigger accuracy with an adjustment coefficient K.

[0084] Specifically, the adjustment coefficient K is calculated and set by the following formula:

[0085]

[0086] The adjusted preset trigger accuracy P0' is set to P0'=K×P0.

[0087] The present invention can determine the actual contact response of the touch screen in a bent state by comparing the contact response sensitivity within the optimal working bending range with the preset response sensitivity. According to the comparison results, manufacturers and designers can adjust the detection process parameters to optimize the contact response sensitivity of the touch screen to ensure that the product performance meets expectations. Adjusting the detection process parameters can help improve the performance and stability of the touch screen. By adjusting the parameters according to actual conditions, the touch screen can still provide accurate and sensitive touch response in a bent state, thereby improving product quality and user experience. By adjusting the detection process parameters according to the comparison results of the contact response sensitivity, the touch screen can adapt to different working environments and usage scenarios. Adjusting the parameters can improve the adaptability of the touch screen under different bending degrees to ensure that the product can work normally under various conditions.

[0088] See also Figure 4 As shown, Figure 4 The present invention is a schematic structural diagram of a touch screen detected by a touch screen detection system based on contact point sensing according to an embodiment of the present invention.

[0089] A touch screen detected by the above-mentioned touch screen detection system based on contact point sensing comprises:

[0090] Flexible touch screen 3, used to maintain image clarity and stability in a bent state, allowing the screen to adapt to various shapes;

[0091] Circuit layer 4, which is used to transmit electrical signals and pass the user's touch input signal to the controller so that the system can accurately capture and process the user's touch operation;

[0092] A flexible bottom plate 5, which is used to support the bending of the flexible display screen. The flexible bottom plate is made of a flexible material to ensure that the screen and the circuit are not damaged in the bent state;

[0093] The flexible touch screen, the circuit layer and the flexible bottom plate all include a bending portion 1 and a straight portion 2, the bending portion is made of a flexible material, and the straight portion is made of a rigid material.

[0094] The flexible material in the embodiment of the present invention includes but is not limited to “polyimide, polyester film and polyurethane”, and the rigid material includes but is not limited to “glass, plastic and composite material”.

[0095] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A touch screen detection system based on contact sensing, characterized in that: include: A screen structure information acquisition module, which is used to obtain the bending angle range of the screen bending portion, the screen bending ratio and the screen straight ratio; A bending ratio analysis module, which is connected to the screen structure information acquisition module, is used to calculate the bending loss parameter according to the stretching ratio of the bending portion and the basic ratio of the straight portion, and to calculate the number of detection angles according to the bending angle range of the screen bending portion to determine each detection angle, and to determine a number of detection points at each detection angle; A bending detection module, which is connected to the bending ratio analysis module, is used to use the detection target to touch or slide each detection point to obtain the actual excitation point information on the touch screen, and to use the detection target with different contact areas at the contact end to detect the bending part of the touch screen; wherein the threshold of the contact area is determined based on the bending width of the bending part; A detection and analysis module, which is connected to the bending detection module, is used to determine the triggering accuracy of the bending portion according to the detection needle excitation position information and the actual excitation point information, and to determine the triggering adaptability of the bending portion based on the triggering accuracy calculated by the detection needles of each contact area, and to calculate the optimal working bending range of the bending portion according to the triggering accuracy at each detection angle; The adjustment module is connected to the detection and analysis module and is used to determine whether to adjust the parameters of the touch screen detection process according to the comparison result between the contact point reaction sensitivity within the optimal working bending range and the preset reaction sensitivity.

2. The touch screen detection system based on contact point sensing according to claim 1, characterized in that: The bending ratio analysis module determines the bending loss parameter according to the absolute value of the difference between the stretching ratio of the bending portion and the basic ratio of the straight portion.

3. The touch screen detection system based on contact point sensing according to claim 2, characterized in that: The bending ratio analysis module determines a number of detection points at each detection angle and determines the number of detection points at each detection angle according to the bending loss parameter. The detection points are located at the junction of the bending portion and the straight portion.

4. The touch screen detection system based on contact point sensing according to claim 3, characterized in that: The bending detection module uses a contact end with different contact areas to perform point touch or slide touch on each detection point to obtain actual excitation point position information on the touch screen.

5. The touch screen detection system based on contact point sensing according to claim 4, characterized in that: The threshold of the contact area is determined based on the bending width of the bending portion.

6. The touch screen detection system based on contact point sensing according to claim 5, characterized in that: The detection and analysis module determines the triggering accuracy of the bending portion according to the average value of the coincidence of the excitation position information of a plurality of detection needles and the actual excitation point position information.

7. The touch screen detection system based on contact point sensing according to claim 6, characterized in that: The detection and analysis module determines the trigger adaptability of the bending portion according to the variation range of the trigger accuracy calculated by the detection needles of each contact area under the condition of determining the trigger accuracy of the bending portion.

8. The touch screen detection system based on contact point sensing according to claim 7, characterized in that: The detection and analysis module calculates the optimal working bending range of the bending portion according to the comparison result of the triggering accuracy at each detection angle and the preset triggering accuracy, wherein: The detection and analysis module determines that the working bending angle of the bending portion is unqualified according to the comparison result that the trigger accuracy is less than the preset trigger accuracy; The detection and analysis module determines that the working bending angle of the bending portion is qualified according to the comparison result that the trigger accuracy is greater than or equal to the preset trigger accuracy.

9. The touch screen detection system based on contact point sensing according to claim 8, characterized in that: The adjustment module determines to adjust the parameters of the touch screen detection process according to the comparison result that the contact point reaction sensitivity within the optimal working bending range is less than the preset reaction sensitivity, wherein the touch screen detection process parameters include the preset trigger accuracy.

10. A touch screen detected by the touch screen detection system based on contact induction according to any one of claims 1 to 9, characterized in that: include: Flexible touch screens, which maintain image clarity and stability when bent, allowing the screen to adapt to a variety of shapes; The circuit layer is used to transmit electrical signals and pass the user's touch input signal to the controller so that the system can accurately capture and process the user's touch operation; A flexible bottom plate, which is used to support the bending of the flexible display screen. The flexible bottom plate is made of a flexible material to ensure that the screen and circuit are not damaged in the bent state; The flexible touch screen, the circuit layer and the flexible bottom plate all include a bending portion and a straight portion, the bending portion is made of a flexible material, and the straight portion is made of a rigid material.

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