WO2020172817A1 - Stretchable touch sensor and control method thereof - Google Patents

Stretchable touch sensor and control method thereof Download PDF

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Publication number
WO2020172817A1
WO2020172817A1 PCT/CN2019/076317 CN2019076317W WO2020172817A1 WO 2020172817 A1 WO2020172817 A1 WO 2020172817A1 CN 2019076317 W CN2019076317 W CN 2019076317W WO 2020172817 A1 WO2020172817 A1 WO 2020172817A1
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WO
WIPO (PCT)
Prior art keywords
detection circuit
longitudinal
resistance value
stretch
port
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Application number
PCT/CN2019/076317
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French (fr)
Chinese (zh)
Inventor
李贺
陈鑫
胡康军
Original Assignee
深圳市柔宇科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201980073528.2A priority Critical patent/CN113260966A/en
Priority to PCT/CN2019/076317 priority patent/WO2020172817A1/en
Publication of WO2020172817A1 publication Critical patent/WO2020172817A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the invention relates to the field of touch sensors, in particular to a stretchable touch sensor and a control method thereof.
  • the performance of the stretchable touch sensor is affected by the resistance change of the signal channel in the stretched state.
  • the sensing coordinate information before and after the same position is stretched will be different, which may cause the operation feedback from the stretchable touch sensor to be completely different from the operation that the user wants to perform, thereby causing confusion to the user's operation.
  • the technical problem to be solved by the embodiments of the present invention is to provide a stretchable touch sensor and a control method thereof.
  • the stretchable touch sensor can be operated normally before and after stretching.
  • an embodiment of the first aspect of the present invention provides a stretchable touch sensor, including:
  • a substrate, the substrate is provided with a stretch detection circuit and the touch circuit;
  • a resistance value detection unit which detects the initial resistance value and the tension resistance value of the tension detection circuit before and after the tension
  • the control unit is electrically connected to the resistance value detection unit, and the control unit is configured to calculate the resistance value change of the extension detection circuit after being stretched according to the initial resistance value and the extension resistance value of the extension detection circuit the amount;
  • the control unit is further configured to adjust the signal of the touch circuit according to the amount of resistance change.
  • An embodiment of the second aspect of the present invention provides a method for controlling a stretchable touch sensor.
  • the stretchable touch sensor includes a touch circuit, a substrate, a stretch detection circuit, a resistance detection unit, and a control unit;
  • the control method of the stretchable touch sensor includes:
  • the signal of the touch circuit is adjusted according to the amount of resistance change.
  • the resistance value detection unit detects the initial resistance value and the stretch resistance value of the stretch detection circuit before and after the stretch, and the control unit communicates with the resistance value
  • the detection unit is electrically connected, and the control unit is used to calculate the resistance value change of the tensile detection circuit after being stretched according to the initial resistance value and the tensile resistance value of the tensile detection circuit; the control unit stores the For the initial sensing coordinate information of the stretch sensor when it is not stretched, the control unit is also used to adjust the signal of the touch circuit according to the resistance change. Therefore, the control unit can correctly recognize the user's operation by adjusting the signal of the touch circuit, and the performance of the stretchable touch sensor will not be affected, thereby not causing trouble to the user's touch operation.
  • FIG. 1 is a schematic diagram of a stretchable touch sensor according to a first embodiment of the present invention
  • FIG. 2 is a partial schematic diagram of the stretchable touch sensor according to the first embodiment of the present invention.
  • Figure 3 is a cross-sectional view taken along line OO' in Figure 2;
  • 4a to 4c are schematic diagrams of the stretchable touch sensor detecting the initial resistance value and the stretched resistance value before and after stretching according to the first embodiment of the present invention
  • FIG. 5 is a waveform diagram of the enable signal sent by the control unit to the resistance detection unit according to the first embodiment of the present invention
  • FIG. 6 is a flowchart of a method for controlling a stretchable touch sensor according to an embodiment of the present invention
  • FIG. 7 is a partial schematic diagram of a stretchable touch sensor according to a second embodiment of the present invention.
  • Fig. 8 is a cross-sectional view taken along line OO' in Fig. 6;
  • FIG. 9 is a partial schematic diagram of a stretchable touch sensor according to a third embodiment of the present invention.
  • Figure 10 is a cross-sectional view taken along line OO' in Figure 8.
  • 110-touch circuit 110-touch circuit; 111-touch electrode; 112-touch lead; 120-substrate; 130,230,330-first longitudinal stretch detection circuit; 131,231,331-first longitudinal part; 132,232 -First transverse part; 140, 240, 340- second longitudinal stretch detection circuit; 141, 241, 341- second longitudinal part; 142, 242- second transverse part; 150, 250, 350- transverse stretch detection Line; 151, 251, 351-transverse line; 400-resistance detection unit; 500-control unit; A-first port; B-second port; C-third port; D-fourth port; OO'- Section line.
  • the stretchable touch sensor includes a touch circuit 110, a substrate 120, a resistance detection unit 400 and a control unit 500.
  • the stretchable touch sensor is derived from flexible touch technology. It is an all-round innovative product integrating new materials, new processes, and new designs.
  • the stretchable touch sensor not only has a good It also has excellent flexibility and stretchability.
  • the stretchable touch sensor can be stretched in the longitudinal and transverse directions in the plane. Stretchable touch sensors can be used in wearable electronic products in combination with flexible displays, as well as in many fields such as automotive electronics and smart homes.
  • the substrate 120 itself can be stretched in the longitudinal and transverse directions.
  • the substrate 120 is generally rectangular or approximately rectangular in shape.
  • the longitudinal direction refers to the direction in which the length of the substrate 120 is relatively long, and the lateral direction is It refers to the direction in which the length of the substrate 120 is relatively short.
  • the substrate 120 may be a stretchable plastic substrate, a glass substrate, or the like.
  • the substrate 120 is provided with a touch circuit 110, the touch circuit 110 includes touch electrodes 111 and touch leads 112, the touch leads 112 and The touch electrodes 111 are electrically connected, and the signals on the touch electrodes 111 are led out through the touch leads 112.
  • the touch circuit 110 is used to detect the actual sensing coordinates of the user, and then the control unit 500 completes the corresponding touch feedback according to the commands corresponding to the actual sensing coordinates.
  • the substrate 120 is also provided with a stretch detection circuit, which can be stretched, so that when the substrate 120 is stretched, the stretch detection circuit will be stretched at the same time. After the stretch detection circuit is stretched, its resistance value will change.
  • the stretch detection circuit includes a transverse stretch detection circuit 150 and a longitudinal stretch detection circuit, and the length of the transverse stretch detection circuit 150 is less than the length of the longitudinal stretch detection circuit.
  • the longitudinal stretching detection circuit includes a first longitudinal stretching detection circuit 130 and a second longitudinal stretching detection circuit 140, that is, the length of the lateral stretching detection circuit 150 is smaller than that of the first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 130. The sum of the lengths of the longitudinal stretch detection circuit 140, the transverse stretch detection circuit 150 and the longitudinal stretch detection circuit at least partially overlap.
  • the first longitudinal stretching detection circuit 130, the second longitudinal stretching detection circuit 140, the lateral stretching detection circuit 150, and the touch circuit 110 are all located on the same surface of the substrate 120, for example, they are all located on the substrate 120.
  • the upper or lower surface, here is the upper surface of the substrate 120.
  • they may all be located on the lower surface.
  • the stretching detection circuit may also include only one or two of the first longitudinal stretching detection circuit, the second longitudinal stretching detection circuit, and the lateral stretching detection circuit.
  • the stretch detection circuit is close to the outer contour of the substrate 120 and at least partially surrounds the touch circuit 110.
  • the first longitudinal stretch detection circuit 130, the second longitudinal stretch detection circuit 140, and the horizontal The stretch detection circuit 150 is located at the periphery of the touch circuit 110 and at least partially surrounds the touch circuit 110.
  • the first longitudinal stretch detection circuit 130, the second longitudinal stretch detection circuit 140, and the lateral stretch detection circuit 150 are located on the substrate.
  • the touch line 110 is located in the edge area of the substrate 120, and the touch electrode 111 is provided on most of the stretchable touch sensor to realize the touch function.
  • first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 140 mainly extend along the longitudinal direction of the substrate 120, and the first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 130
  • the extension detection lines 140 are respectively located on opposite sides of the substrate 120, and in FIG. 2 are respectively located on the left and right sides of the substrate 120.
  • both ends of the first longitudinal extension detection circuit 130 are respectively provided with a first port A and a second port B, and both ends of the second longitudinal extension detection circuit 140 are respectively provided with a third port. Port C and the fourth port D.
  • the first port A, the second port B, the third port C, and the fourth port D are located on the same side of the substrate 120, and are located on the upper side of the substrate 120 here.
  • the first port A is located away from the touch circuit 110 relative to the second port B.
  • the first port A is on the outside of the substrate 120 relative to the second port B
  • the fourth port D is opposite to
  • the third port C is located away from the touch circuit 110.
  • the third port C is located inside the substrate 120 relative to the fourth port in the lateral direction.
  • the two ends of the lateral stretch detection circuit 150 share the first port A and the fourth port D respectively, that is, the two ends of the lateral stretch detection circuit 150 are the first port A and the fourth port D, respectively, so that Save the number of ports.
  • the first port A to the fourth port D are used for electrical connection with external devices.
  • the resistance value detection unit 400 detects the initial resistance value and the tension resistance value of the tension detection circuit before and after the tension. Specifically, before the stretchable touch sensor is stretched, the resistance detection unit 400 detects the initial resistance value of the stretch detection circuit, and after the stretch, the resistance detection unit 400 detects the stretch resistance value of the stretch detection circuit . Specifically, in this embodiment, the resistance detection unit 400 is electrically connected to the first port A, the second port B, the third port C, and the fourth port D, respectively, and the resistance detection unit 400 is used to detect the The resistance values of a longitudinal stretching detection circuit 130, a second longitudinal stretching detection circuit 140, and a transverse stretching detection circuit 150 before and after stretching.
  • the resistance value detection unit 400 before the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4a). At this time, the flow through the second port B can be measured.
  • the current value of the first longitudinal extension detection circuit 130 can be obtained by calculating the ratio of the high level to the current value to obtain the first initial resistance value of the first longitudinal extension detection circuit 130; the resistance value detection unit 400 outputs a high level to The third port C (see Figure 4b). At this time, the current value flowing through the second longitudinal extension detection circuit 140 can be measured through the fourth port D.
  • the resistance value detection unit 400 By calculating the ratio of the high level to the current value, the second The second initial resistance value of the longitudinal extension detection circuit 140; the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4c), at this time, the flow through the lateral extension detection can be measured through the fourth port D
  • the current value of the line 150 can be obtained by calculating the ratio of the high level to the current value to obtain the third initial resistance value of the lateral extension detection line 150.
  • the resistance value detection unit 400 After that, after the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4a), and the first longitudinal stretch detection circuit 130 can also be obtained through calculation. Stretch resistance value; the resistance value detection unit 400 outputs a high level to the third port C (see FIG.
  • the unit 400 outputs a high level to the first port A (see FIG. 4c), and the third stretch resistance value of the lateral stretch detection circuit 150 can also be obtained through calculation.
  • control unit 500 is electrically connected to the resistance detection unit 400, the control unit 500 outputs an enable signal to the resistance detection unit 400, and the resistance detection unit 400 Different time-sharing signals output high-level signals or ground signals to any one of the first port A, the second port B, the third port C, and the fourth port D, that is, the resistance value detection unit 400 is Different signals are output to the stretch detection circuit in different periods.
  • control unit 500 is configured to calculate the resistance value change of the tensile detection circuit after being stretched according to the initial resistance value and the tensile resistance value of the tensile detection circuit.
  • the control unit 500 is also used to adjust the signal of the touch circuit according to the change in resistance.
  • control unit 500 is configured to correct the sensing coordinates of the touch circuit 110 after being stretched according to the resistance change amount.
  • control unit is further configured to compensate the signal attenuation after the touch line is stretched according to the resistance change.
  • the control unit 500 stores initial sensing coordinate information when the stretchable touch sensor is not stretched, where the initial sensing coordinate information is two-dimensional coordinate information, specifically horizontal and vertical coordinate information .
  • the control unit 500 can compare the two-dimensional coordinate information with the stretchable touch sensor's stretched sensing coordinates to confirm that the user touches the actual position on the stretchable touch sensor.
  • This initial sensing coordinate information is the most It has been artificially set from the beginning.
  • the change in resistance value has a linear relationship with the stretched deformation amount. Therefore, the control unit 500 is based on the first initial resistance value, the second initial resistance value, and the first stretch resistance value.
  • the second tensile resistance value is calculated to obtain the longitudinal resistance change of the tensile test circuit after being stretched, and the transverse resistance of the tensile test circuit after being stretched is calculated according to the third initial resistance value and the third tensile resistance value.
  • the control unit 500 calculates the transverse deformation and the longitudinal deformation of the stretch detection line according to the transverse resistance change and the longitudinal resistance change, and the control unit 500 performs the initial sensing coordinate information The correction is performed to obtain the sensing coordinate information after stretching, that is, the sensing coordinate after the touch circuit 110 is stretched is corrected.
  • the control unit may directly correct the initial induction coordinate information according to the lateral resistance change amount and the longitudinal resistance change amount to obtain stretch induction coordinate information.
  • control unit 500 can correctly recognize the user's actual touch position after the stretchable touch sensor is stretched according to the stretch sensing coordinate information, and then the control unit 500 can find the corresponding touch command according to the actual touch position to achieve the correct The touch feedback will not cause trouble to the user’s touch operation.
  • control unit may also compensate for the signal attenuation after the touch line is stretched according to the lateral resistance change and the longitudinal resistance change, for example: the control The unit calculates the lateral deformation amount and the longitudinal deformation amount of the stretch detection circuit according to the lateral resistance value change amount and the longitudinal resistance value change amount; the control unit touches according to the lateral deformation amount and the longitudinal deformation amount The signal attenuation after the line is stretched is compensated, so that the performance of the stretchable sensor will not be affected by the stretch.
  • the control unit may not only correct the sensing coordinates after the touch circuit is stretched, but also compensate the signal attenuation after the touch circuit is stretched.
  • the stretch detection circuit includes a signal input terminal, a first signal output terminal, and a second signal output terminal.
  • the control unit 500 inputs a signal at the signal input terminal, it determines the longitudinal direction according to the output result of the first signal output terminal.
  • the resistance value change amount is determined according to the output result of the second signal output terminal.
  • the first port A is the signal input end of the tensile detection circuit
  • the second port B is the first signal output end of the tensile detection circuit
  • the fourth port D is the tensile detection circuit.
  • the second signal output terminal of the line is the first signal input end of the tensile detection circuit.
  • first port A and the third port C are both the signal input ends of the tensile detection circuit
  • the second port B and the fourth port D are the first signal output of the tensile detection circuit
  • the fourth port D is the second signal output end of the stretch detection circuit, that is, the first signal output end and the second signal output end share the fourth port.
  • first port A and the third port C may also be used as signal output terminals
  • the second port B and the fourth port D may also be used as signal input terminals.
  • the first longitudinal stretch detection circuit 130 is located on the left side of the touch circuit 110, that is, on the left edge of the substrate 120, the first longitudinal stretch The detection circuit 130 includes a first lateral portion 132 and two first longitudinal portions 131; the second longitudinal stretch detection circuit 140 is located on the right side of the touch circuit 110, that is, on the right edge of the substrate 120, The two longitudinal stretch detection lines 140 include a second transverse portion 142 and two second longitudinal portions 141.
  • the ends of the two first longitudinal portions 131 are respectively electrically connected to the two ends of the first transverse portion 132, thereby forming a small "U" shape.
  • the head ends are respectively the first port A and the second port B;
  • the second longitudinal stretch detection circuit 140 includes two second longitudinal portions 141, and the ends of the two second longitudinal portions 141 are respectively connected to the second transverse portion
  • the two ends of the 142 are electrically connected to form a small "U" shape, and the head ends of the two second longitudinal portions 141 are the third port C and the fourth port D respectively.
  • the first lateral portion 132 and the second lateral portion 142 are electrically connected via a lateral line 151, and the first longitudinal portion 131, the first lateral portion 132, and the lateral line 151 are connected to the first port A.
  • the second transverse portion 142 and the second longitudinal portion 141 connected to the fourth port D together constitute the transverse stretch detection circuit 150, that is, the electrical property formed from the first port A through the transverse circuit 151 to the fourth port D
  • the line is a transverse stretch detection line 150, and the transverse stretch detection line 150 is a "U" shape.
  • first longitudinal portion 131 and the second longitudinal portion 141 are parallel to each other, and both extend along the longitudinal direction of the substrate 120, which is the vertical direction in FIG.
  • the horizontal portion 142 and the horizontal line 151 are located on the same straight line, and the straight line is perpendicular to the first longitudinal portion 131 and the second longitudinal portion 141.
  • the straight line is a horizontal direction.
  • the lateral line 151 is located between the first lateral portion 132 and the second lateral portion 142.
  • the control unit 500 is electrically connected to the resistance detection unit 400, and the control unit 500 sends an enable signal and other signals to the resistance detection unit 400.
  • the enable signal is periodic, and the period T of the enable signal includes a first total time period T1 and a second total time period T2.
  • the enable signal is in the first total time period T1 At a high level, the enable signal is at a low level during the second total time period T2.
  • the resistance detection unit 400 detects the initial resistance value and the tensile resistance value of the tensile detection circuit, that is, the The stretch detection circuit receives a high-level signal during the first total time period and outputs a current.
  • the enable signal sent by the control unit 500 to the resistance detection unit 400 is low, the resistance detection unit 400 sends a ground The signal is given to the stretch detection circuit to reduce the influence of external signals on the touch circuit, that is, the stretch detection circuit is grounded during the second total time period to shield the touch circuit from external static electricity.
  • the enable signal changes mainly in the following three ways:
  • Dynamic mode for example, in this mode, when the user is detected to touch, switch to enter the first total time period T1, when the resistance of the stretch detection line does not change for a certain period of time, switch to the first 2. Total time period T2.
  • the first total time period T1 includes a first time period, a second time period, and a third time period
  • the second total time period T2 includes a fourth time period.
  • the resistance value detection unit 400 sends a certain high level to the first port A, so that the current value on the first longitudinal extension detection circuit 130 can be detected, and the first longitudinal extension can be calculated.
  • the resistance value of the stretch detection circuit 130 When the stretchable touch sensor is not stretched, the resistance value is the first initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the first resistance value.
  • the resistance value detection unit 400 sends a certain high level to the third port C, and then the resistance value of the second longitudinal extension detection circuit 140 can be calculated.
  • the resistance value is the second initial resistance value.
  • the resistance value is the second stretch resistance value; the same goes for the third time
  • the resistance value detection unit 400 in the paragraph above sends a certain voltage value to the first port A, and then the resistance value of the lateral stretch detection circuit 150 can be calculated.
  • the resistance value is The third initial resistance value, when the stretchable touch sensor is stretched, the resistance value is the third stretch resistance value.
  • the first time period, the second time period, and the third time period do not overlap with each other.
  • the resistance value detection unit can directly obtain the resistance value of the first longitudinal stretch detection circuit in the first time period.
  • the resistance value is the first initial resistance value.
  • the resistance value is the first stretch resistance value; in the second time period, the resistance value detection unit can directly obtain the second longitudinal stretch The resistance value of the stretch detection circuit.
  • the resistance value is the second initial resistance value.
  • the resistance value is the second stretch Resistance value; in the second time period, the resistance value detection unit can directly obtain the resistance value of the lateral stretch detection circuit.
  • the resistance value is the third initial resistance value.
  • the resistance value is the third stretch resistance value.
  • the first total time period may include the sum of a first time period, a second time period, and a third time period, or may include multiple first time periods, second time periods, and third time periods. The sum of time periods.
  • the resistance value detection unit 400 sends a ground signal to the first port A in the fourth time period to shield the interference of other signals on the touch circuit.
  • the second total time period may include a fourth time period, or may include multiple fourth time periods.
  • the sum of the first total time period T1 and the second total time period T2 is fixed, that is, a period T is fixed.
  • the higher the resistance detection precision the higher the first total time period T1
  • the greater the number of times that the extension detection line is detected that is, the greater the number of the first total time period T1 including the first time period, the second time period and the third time period, so that the proportion of the first total time period T1 increases .
  • the decrease in the proportion of the second total time period T2 may lead to a decrease in the anti-interference ability; conversely, the lower the resistance detection precision, the fewer times the tensile detection line is detected in the first total time period T1, which means that The smaller the number of the first total time period T1 of the first time period, the second time period, and the third time period, the less the first total time period T1 takes up, the second total time period T2 takes up, and the anti-interference ability improve.
  • the resistance value detection unit and the control unit are located on different circuit boards, but the present invention is not limited to this. In other embodiments of the present invention, the resistance value detection unit and the control unit The units can also be located on the same circuit board or in the same chip.
  • the resistance detection unit 400 can measure the first initial resistance value R0 (AB), the second initial resistance value R0 (CD), and the third initial resistance value R0 (AD) when it is not stretched.
  • AB refers to the line from the first port A to the second port B, that is, the first longitudinal extension detection line
  • CD refers to the line from the third port C to the fourth port D
  • AD refers to the line from the first port A to the fourth port D, that is, the transverse stretch detection line.
  • the first tensile resistance value RL(AB) (see Figure 4a), the second tensile resistance value RL(CD) (see Figure 4b), and the third tensile resistance value RL(AD) can be measured.
  • the change rate of the longitudinal resistance on the left side of the touch circuit 110 E(AB) (RL(AB)-R0(AB))/R0(AB)
  • the change rate of the longitudinal resistance on the left side RE(AB) refers to the resistance change caused by stretching between the first port A and the second port B. Since the first longitudinal stretching detection circuit 130 between the first port A and the second port B is mostly In the longitudinal direction, the resistance change rate RE(AB) can represent the left longitudinal resistance change.
  • the resistance value in the left longitudinal direction of the touch circuit 110 can be corrected or compensated by multiplying RE(AB);
  • the rate of change RE(AD) measured is the resistance value change of the transverse part of the transverse stretch detection circuit due to stretching, specifically half the length of the first transverse part 132 and half the length of the second transverse part 142 And the change in resistance value of the transverse line 151 due to stretching.
  • RE(AD) can represent the change in transverse tensile resistance. Therefore, the resistance value in the lateral direction can be corrected or compensated by multiplying RE(AD).
  • the vertical resistance change at the center of the touch circuit 110 can be represented by RE (AB), or by RE (CD), or by the average value of RE (AB) and RE (CD).
  • the change in the lateral resistance on the line 110 can be represented by RE(AD), and the change in the longitudinal resistance and the change in the lateral resistance on the touch circuit 110 can be corrected or compensated. Understandably, because the substrate can basically maintain the same unidirectional deformation amount when it is stretched, only one of RE (AB) and RE (CD) can be measured to obtain the longitudinal resistance change rate.
  • the longitudinal deformation on the touch circuit 110 may be represented by ⁇ L(AB), or by ⁇ L(CD), or by the average value of ⁇ L(AB) and ⁇ L(CD). Therefore, through the deformation correction, the initial sensing coordinate information can be corrected, so as to realize the correction of the sensing coordinate after the touch line is stretched.
  • first longitudinal portion 131, the second longitudinal portion 141, the first transverse portion 132, the second transverse portion 142, and the transverse line 151 are all composed of wires, which have certain stretchability. It is made of conductive materials (such as silver glue, carbon paste, liquid metal, etc.) through specific processes (such as printing, spraying, transfer, etc.).
  • the length of the first longitudinal portion 131 is much greater than the length of the first lateral portion 132, so that the influence of the first lateral portion 132 on the longitudinal length deformation ⁇ L(AB) can be minimized.
  • the length of the second longitudinal portion 141 is much greater than the length of the second transverse portion 142, so that the influence of the second transverse portion 142 on the longitudinal length deformation ⁇ L(CD) can be minimized.
  • the ratio of the length of the first longitudinal portion 131 to the length of the first transverse portion 132 is greater than or equal to 10
  • the ratio of the length of the second longitudinal portion 141 to the length of the second transverse portion 142 is greater than or equal to 10.
  • the present invention also provides a control method for a stretchable touch sensor.
  • the control method for the stretchable touch sensor corresponds to the stretchable touch sensor described above.
  • the stretchable touch sensor includes a touch circuit, The substrate, the stretch detection circuit, the resistance value detection unit, and the control unit, as the stretchable touch sensor has been described in detail above, will not be repeated here. 1 and 6, the control method of the stretchable touch sensor includes the following steps:
  • the resistance value detection unit 400 before the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the stretch detection circuit, so that the initial resistance value of the stretch detection circuit can be calculated.
  • the stretching detection circuit includes a first longitudinal stretching detection circuit 130, a second longitudinal stretching detection circuit 140, and a transverse stretching detection circuit 150. Please refer to FIGS. 4a-4c in combination.
  • the resistance detection unit 400 before the stretchable touch sensor is stretched, the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4a).
  • the value detection unit 400 can calculate the first initial resistance value of the first longitudinal extension detection circuit 130; the resistance value detection unit 400 outputs a high level to the third port C (see FIG.
  • the resistance value detection unit 400 now The second initial resistance value of the second longitudinal extension detection circuit 140 can be calculated; the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4c), and the resistance detection unit 400 can calculate the horizontal
  • the third initial resistance value of the detection circuit 150 is stretched.
  • the resistance value detection unit 400 outputs a high level to the stretch detection circuit, so that the stretch resistance value of the stretch detection circuit can be calculated.
  • FIGS. 4a-4c in combination.
  • the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4a).
  • the first extension resistance value of the first longitudinal extension detection circuit 130 is calculated; the resistance value detection unit 400 outputs a high level to the third port C (see FIG. 4b), and the second longitudinal extension detection can be obtained by calculation.
  • the second tensile resistance value of the circuit 140; the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4c), and the third tensile resistance value of the lateral tensile detection circuit 150 can be calculated at this time.
  • S130 Calculate the resistance value change of the stretchable touch sensor after being stretched according to the initial resistance value and the stretch resistance value;
  • the control unit 500 calculates the resistance value change of the stretchable touch sensor after stretching according to the initial resistance value and the stretching resistance value.
  • the resistance value change includes the lateral resistance value.
  • the control unit 500 calculates the first longitudinal resistance change according to the first initial resistance value and the first tensile resistance value, and obtains the first longitudinal resistance change according to the second initial resistance value and the second The tensile resistance value is calculated to obtain the second longitudinal resistance change, and the control unit 500 calculates the longitudinal resistance change according to the first longitudinal resistance change and the second longitudinal resistance change; the control unit 500 calculates the longitudinal resistance change according to the third initial resistance value , The third tensile resistance value is calculated to obtain the lateral resistance change.
  • S140 Adjust the signal of the touch circuit according to the amount of resistance change.
  • step S140 includes: correcting the sensing coordinates of the stretched touch circuit according to the resistance change.
  • control unit 500 stores initial sensing coordinate information, so that the control unit 500 can directly obtain the initial sensing coordinate information of the stretchable touch sensor.
  • the control unit 400 corrects the stretched sensing coordinates of the touch circuit according to the resistance change, and specifically corrects the stretched sensing coordinates of the touch circuit according to the lateral resistance change and the longitudinal resistance change.
  • step S140 includes: compensating for the signal attenuation after the touch circuit is stretched according to the resistance change.
  • the step of "correcting the induced coordinates after the touch line is stretched according to the change in resistance value" specifically includes:
  • the induced coordinate after the touch line is stretched is corrected.
  • the amount of resistance change and the amount of deformation have a linear relationship, so the control unit 500 can calculate the amount of deformation of the stretch detection circuit according to the amount of resistance change, specifically according to the amount of change in lateral resistance and The longitudinal resistance change amount is calculated to obtain the transverse deformation and the longitudinal deformation of the stretch detection circuit. Thereafter, the control unit 500 may correct the sensing coordinates of the touch circuit after stretching according to the deformation of the stretch detection circuit, and specifically perform the correction of the sensing coordinates of the touch circuit after stretching according to the horizontal deformation and the longitudinal deformation. Fix.
  • both ends of the first longitudinal extension detection circuit are respectively provided with a first port and a second port, and both ends of the second longitudinal detection circuit are respectively provided with a third port.
  • the first port and the fourth port are shared by both ends of the lateral stretch detection circuit respectively.
  • the resistance value detection unit is electrically connected to the first port, the second port, the third port, and the fourth port.
  • step S120 specifically includes:
  • the resistance value detection unit inputs a high-level signal to the first longitudinal stretch detection circuit through the first port;
  • the resistance value detection unit inputs a high-level signal to the second longitudinal extension detection circuit through the third port;
  • the resistance value detection unit inputs a high-level signal to the lateral stretch detection circuit through the first port;
  • the tensile resistance value of the first longitudinal extension detection circuit 130, the extension resistance value of the second longitudinal extension detection circuit 140, and the extension resistance value of the transverse extension detection circuit 150 are calculated by calculation; wherein, the first time period , The second time period and the third time period do not overlap.
  • step S120 specifically includes:
  • the resistance value detection unit obtains the tensile resistance value of the first longitudinal tensile detection circuit in the first time period
  • the resistance value detection unit obtains the tensile resistance value of the second longitudinal extension detection circuit
  • the resistance value detection unit obtains the tensile resistance value of the lateral extension detection circuit; wherein the first time period, the second time period, and the third time period do not overlap.
  • control method of the stretchable touch sensor further includes: in the fourth time period, the resistance value detection unit 400 inputs ground signals to the first longitudinal direction through the first port A to the fourth port D, respectively.
  • the stretching detection circuit 130, the second longitudinal stretching detection circuit 140 and the lateral stretching detection circuit 150 can reduce the influence of external signals on the touch circuit 110 and improve the shielding effect.
  • the fourth time period does not overlap with the first time period, the second time period, and the third time period.
  • FIG. 7 is a partial schematic diagram of the stretchable touch sensor according to the second embodiment of the present invention.
  • the schematic diagram of FIG. 7 is similar to the schematic diagram of FIG. 2. Therefore, the same component symbols represent the same components, which will not be repeated here.
  • the main difference between this embodiment and the first embodiment is that the first longitudinal stretching detection circuit, the second longitudinal stretching detection circuit, and the lateral stretching detection circuit are located on the same surface of the substrate, and the touch circuits are all located on the other side of the substrate. one side.
  • the first longitudinal stretch detection circuit 230, the second longitudinal stretch detection circuit 240, and the transverse stretch detection circuit 250 are located on the same surface of the substrate 120.
  • the touch circuits 110 are all located on the other side of the substrate 120, here on the upper surface of the substrate 120.
  • the projections of the first longitudinal stretch detection circuit 230, the second longitudinal stretch detection circuit 240, and the transverse stretch detection circuit 250 on the substrate plane are arranged around the edge of the touch circuit 110, and That is, the first longitudinal stretching detection circuit 230, the second longitudinal stretching detection circuit 240, and the lateral stretching detection circuit are located at the edge of the lower surface of the substrate 120.
  • the first longitudinal portion 231, the second longitudinal portion 241, the first transverse portion 232, the second transverse portion 242, and the transverse circuit 251 are all composed of wires, which have certain stretchability. It is made of conductive materials (such as silver glue, carbon paste, liquid metal, etc.) through specific processes (such as printing, spraying, transfer, etc.).
  • conductive materials such as silver glue, carbon paste, liquid metal, etc.
  • specific processes such as printing, spraying, transfer, etc.
  • FIG. 9 is a partial schematic diagram of a stretchable touch sensor according to a third embodiment of the present invention.
  • the schematic diagram of FIG. 9 is similar to the schematic diagram of FIG. 7. Therefore, the same component symbols represent the same components and will not be repeated here.
  • the main difference between this embodiment and the second embodiment is that the first longitudinal portion and the second longitudinal portion near the inner side are block-shaped.
  • the first longitudinal portion 331 and the two second longitudinal portions 341 are closer to the inner side in the lateral direction.
  • the portion 341 is in a block shape, the first longitudinal portion 331 of the two first longitudinal portions 311 that is laterally close to the outside, the second longitudinal portion 341 of the two second longitudinal portions 341 that is laterally close to the outside, and the first horizontal portion 332, the second horizontal portion 342, and the horizontal line 351 are linear, and the block-shaped first vertical portion 331 and the block-shaped second vertical portion 341 at least partially cover the touch circuit 110, where most of the Touch electrodes 111 and touch leads 112.
  • the loop formed by ABCD can play a role in shielding external signals.
  • the block-shaped first longitudinal portion 331 and the block-shaped second longitudinal portion 341 have a much larger area than the second embodiment, the interference of external signals on the touch circuit 110 can be greatly reduced.
  • the first longitudinal portion that is closer to the outer side in the lateral direction among the two first longitudinal portions, and the second longitudinal portion that is closer to the outer side in the lateral direction among the two second longitudinal portions may also be blocks.
  • the two first longitudinal portions and the two second longitudinal portions both cover at least part of the touch circuit to shield the interference of external signals on the signal on the touch circuit.
  • the first longitudinal portion that is closer to the outside in the lateral direction among the two first longitudinal portions, and the second longitudinal portion that is closer to the inner side in the lateral direction among the two second longitudinal portions may also be blocks. Shape, or the two first longitudinal portions and the two second longitudinal portions are block-shaped, etc., and the first longitudinal portion and the second longitudinal portion cover at least part of the touch circuit.
  • first longitudinal portion 331 that is closer to the outside in the lateral direction among the two first longitudinal portions 331 and the second longitudinal portion 341 that is closer to the inner side in the lateral direction among the two second longitudinal portions 341 are block-shaped, As a result, the distance between the first longitudinal portion 331 and the second longitudinal portion 341 will be relatively small, and the length of the horizontal line 351 will be relatively short.

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Abstract

Disclosed in an embodiment of the present invention is a stretchable touch sensor, comprising: a touch circuit (110); a substrate (120) provided with a stretch detection circuit and the touch circuit (110); a resistance detection unit used to detect an initial resistance and a post-stretch resistance of the stretch detection circuit before and after stretching; a control unit (500) electrically connected to the resistance detection unit, wherein the control unit (500) performs calculation according to the initial resistance and the post-stretch resistance of the stretch detection circuit to obtain a resistance variation of the stretch detection circuit after stretching, and adjusts a signal of the touch circuit (110) according to the resistance variation. Also disclosed is a control method of a stretchable touch sensor. The present invention enables normal operation of a stretchable touch sensor before and after stretching.

Description

可拉伸触控传感器及其控制方法Stretchable touch sensor and control method thereof 技术领域Technical field
本发明涉及触控传感器领域，特别涉及一种可拉伸触控传感器及其控制方法。The invention relates to the field of touch sensors, in particular to a stretchable touch sensor and a control method thereof.
背景技术Background technique
随着柔性可穿戴设备和机器人产业的发展，智能可穿戴柔性设备在人们的生活以及人机交互界面方面已经有了很大的应用，逐渐成为未来智能科技发展的重要方向。其中，对于柔性可拉伸触控装置来说，在不同应变下保持较为稳定的灵敏度，是实现其功能正常运转的重要部分。因此，研发具有不同应变下高功能稳定性的柔性可拉伸触控传感器变得很重要。With the development of flexible wearable devices and robotics industries, smart wearable flexible devices have been widely used in people's lives and human-computer interaction interfaces, and have gradually become an important direction for the development of smart technology in the future. Among them, for a flexible and stretchable touch device, maintaining a relatively stable sensitivity under different strains is an important part of achieving normal operation of its functions. Therefore, it becomes important to develop flexible stretchable touch sensors with high functional stability under different strains.
现有的可拉伸触控传感器，由于拉伸状态下信号通道的阻值变化会影响可拉伸触控传感器的性能。同时，同一位置被拉伸前和拉伸后感应坐标信息会有所不同，可能导致可拉伸触控传感器反馈的操作与用户想要执行的操作完全不同，从而给用户的操作带来困扰。In the existing stretchable touch sensor, the performance of the stretchable touch sensor is affected by the resistance change of the signal channel in the stretched state. At the same time, the sensing coordinate information before and after the same position is stretched will be different, which may cause the operation feedback from the stretchable touch sensor to be completely different from the operation that the user wants to perform, thereby causing confusion to the user's operation.
发明内容Summary of the invention
本发明实施例所要解决的技术问题在于，提供一种可拉伸触控传感器及其控制方法。可以使可拉伸触控传感器在拉伸前和拉伸后都能正常操作。The technical problem to be solved by the embodiments of the present invention is to provide a stretchable touch sensor and a control method thereof. The stretchable touch sensor can be operated normally before and after stretching.
为了解决上述技术问题，本发明第一方面一实施例提供了一种可拉伸触控传感器，包括：In order to solve the above technical problem, an embodiment of the first aspect of the present invention provides a stretchable touch sensor, including:
触控线路；Touch line
基板，所述基板上设有拉伸检测线路和所述触控线路；A substrate, the substrate is provided with a stretch detection circuit and the touch circuit;
阻值检测单元，所述阻值检测单元检测拉伸前和拉伸后的拉伸检测线路的初始电阻值和拉伸电阻值；A resistance value detection unit, which detects the initial resistance value and the tension resistance value of the tension detection circuit before and after the tension;
控制单元，其与所述阻值检测单元电连接，所述控制单元用于根据所述拉伸检测线路的初始电阻值和拉伸电阻值计算得到被拉伸后拉伸检测线路的阻值变化量；The control unit is electrically connected to the resistance value detection unit, and the control unit is configured to calculate the resistance value change of the extension detection circuit after being stretched according to the initial resistance value and the extension resistance value of the extension detection circuit the amount;
所述控制单元还用于根据阻值变化量对所述触控线路的信号进行调整。The control unit is further configured to adjust the signal of the touch circuit according to the amount of resistance change.
本发明第二方面一实施例提供了一种可拉伸触控传感器的控制方法，所述可拉伸触摸传感器包括触控线路、基板、拉伸检测线路、阻值检测单元以及控制单元；An embodiment of the second aspect of the present invention provides a method for controlling a stretchable touch sensor. The stretchable touch sensor includes a touch circuit, a substrate, a stretch detection circuit, a resistance detection unit, and a control unit;
所述可拉伸触控传感器的控制方法包括：The control method of the stretchable touch sensor includes:
在可拉伸传感器非拉伸状态时检测所述拉伸检测线路的初始电阻值；Detecting the initial resistance value of the stretch detection circuit when the stretchable sensor is not stretched;
在可拉伸传感器拉伸状态时检测所述拉伸检测线路的拉伸电阻值；Detecting the stretch resistance value of the stretch detection circuit when the stretchable sensor is stretched;
根据所述初始电阻值、拉伸电阻值计算得到被拉伸后的拉伸检测线路的阻值变化量；Calculating the resistance value change of the stretch detection circuit after being stretched according to the initial resistance value and the stretch resistance value;
根据阻值变化量对所述触控线路的信号进行调整。The signal of the touch circuit is adjusted according to the amount of resistance change.
实施本发明实施例，具有如下有益效果：Implementing the embodiments of the present invention has the following beneficial effects:
由于基板上设有拉伸检测线路和所述触控线路，阻值检测单元检测拉伸前和拉伸后的拉伸检测线路的初始电阻值和拉伸电阻值，控制单元与所述阻值检测单元电连接，所述控制单元用于根据所述拉伸检测线路的初始电阻值和拉伸电阻值计算得到被拉伸后拉伸检测线路的阻值变化量；所述控制单元存储有可拉伸传感器未被拉伸时的初始感应坐标信息，所述控制单元还用于根据阻值变化量对触控线路的信号进行调整。从而，控制单元对触控线路的信号进行调整可以正确识别用户的操作，可拉伸触控传感器的性能不会受到影响，从而不会给用户的触控操作带来困扰。Since the substrate is provided with a stretch detection circuit and the touch circuit, the resistance value detection unit detects the initial resistance value and the stretch resistance value of the stretch detection circuit before and after the stretch, and the control unit communicates with the resistance value The detection unit is electrically connected, and the control unit is used to calculate the resistance value change of the tensile detection circuit after being stretched according to the initial resistance value and the tensile resistance value of the tensile detection circuit; the control unit stores the For the initial sensing coordinate information of the stretch sensor when it is not stretched, the control unit is also used to adjust the signal of the touch circuit according to the resistance change. Therefore, the control unit can correctly recognize the user's operation by adjusting the signal of the touch circuit, and the performance of the stretchable touch sensor will not be affected, thereby not causing trouble to the user's touch operation.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.
图1是本发明第一实施例可拉伸触控传感器的示意图；FIG. 1 is a schematic diagram of a stretchable touch sensor according to a first embodiment of the present invention;
图2是本发明第一实施例可拉伸触控传感器的部分示意图；2 is a partial schematic diagram of the stretchable touch sensor according to the first embodiment of the present invention;
图3是图2中OO’线的剖视图；Figure 3 is a cross-sectional view taken along line OO' in Figure 2;
图4a-图4c是本发明第一实施例拉伸前后可拉伸触控传感器检测初始电阻值和拉伸电阻值的示意图；4a to 4c are schematic diagrams of the stretchable touch sensor detecting the initial resistance value and the stretched resistance value before and after stretching according to the first embodiment of the present invention;
图5是本发明第一实施例控制单元发送给阻值检测单元的使能信号的波形图；5 is a waveform diagram of the enable signal sent by the control unit to the resistance detection unit according to the first embodiment of the present invention;
图6是本发明一实施例可拉伸触控传感器的控制方法的流程图；6 is a flowchart of a method for controlling a stretchable touch sensor according to an embodiment of the present invention;
图7是本发明第二实施例可拉伸触控传感器的部分示意图；7 is a partial schematic diagram of a stretchable touch sensor according to a second embodiment of the present invention;
图8是图6中OO’线的剖视图；Fig. 8 is a cross-sectional view taken along line OO' in Fig. 6;
图9是本发明第三实施例可拉伸触控传感器的部分示意图；9 is a partial schematic diagram of a stretchable touch sensor according to a third embodiment of the present invention;
图10是图8中OO’线的剖视图；Figure 10 is a cross-sectional view taken along line OO' in Figure 8;
图示标号：Icon label:
110-触控线路；111-触控电极；112-触控引线；120-基板；130、230、330-第一纵向拉伸检测线路；131、231、331-第一纵向部；132、232-第一横向部；140、240、340-第二纵向拉伸检测线路；141、241、341-第二纵向部；142、242-第二横向部；150、250、350-横向拉伸检测线路；151、251、351-横向线路；400-阻值检测单元；500-控制单元；A-第一端口；B-第二端口；C-第三端口；D-第四端口；OO’-剖面线。110-touch circuit; 111-touch electrode; 112-touch lead; 120-substrate; 130,230,330-first longitudinal stretch detection circuit; 131,231,331-first longitudinal part; 132,232 -First transverse part; 140, 240, 340- second longitudinal stretch detection circuit; 141, 241, 341- second longitudinal part; 142, 242- second transverse part; 150, 250, 350- transverse stretch detection Line; 151, 251, 351-transverse line; 400-resistance detection unit; 500-control unit; A-first port; B-second port; C-third port; D-fourth port; OO'- Section line.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
本申请说明书、权利要求书和附图中出现的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是用于区别不同的对象，而并非用于描述特定的顺序。The terms "including" and "having" appearing in the specification, claims and drawings of this application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment. In addition, the terms "first", "second", "third", etc. are used to distinguish different objects, but not to describe a specific sequence.
第一实施例First embodiment
本发明实施例提供一种可拉伸触控传感器，请参见图1，所述可拉伸触控传感器包括触控线路110、基板120、阻值检测单元400和控制单元500。An embodiment of the present invention provides a stretchable touch sensor. Referring to FIG. 1, the stretchable touch sensor includes a touch circuit 110, a substrate 120, a resistance detection unit 400 and a control unit 500.
在本实施例中，所述可拉伸触控传感器由柔性触控技术衍生而来，是集新材料、新工艺、新设计于一体的全方位创新产品，可拉伸触控传感器不仅具有良好的触摸性能，还兼备极佳的柔韧可拉伸性，所述可拉伸触控传感器可以在平面内沿纵向和沿横向方向上拉伸。可拉伸触控传感器既可与柔性显示器相结合应用于可穿戴式电子产品，还可以应用于汽车电子、智能家居等众多领域。In this embodiment, the stretchable touch sensor is derived from flexible touch technology. It is an all-round innovative product integrating new materials, new processes, and new designs. The stretchable touch sensor not only has a good It also has excellent flexibility and stretchability. The stretchable touch sensor can be stretched in the longitudinal and transverse directions in the plane. Stretchable touch sensors can be used in wearable electronic products in combination with flexible displays, as well as in many fields such as automotive electronics and smart homes.
在本实施例中，所述基板120本身可以沿纵向和横向上拉伸，在本实施例中，基板120一般成长方形或者近似长方形的形状，纵向是指基板120长度比较长的方向，横向是指基板120长度比较短的方向。在本实施例中，所述基板120可以是可拉伸的塑料基板、玻璃基板等。In this embodiment, the substrate 120 itself can be stretched in the longitudinal and transverse directions. In this embodiment, the substrate 120 is generally rectangular or approximately rectangular in shape. The longitudinal direction refers to the direction in which the length of the substrate 120 is relatively long, and the lateral direction is It refers to the direction in which the length of the substrate 120 is relatively short. In this embodiment, the substrate 120 may be a stretchable plastic substrate, a glass substrate, or the like.
请参见图1-图4c，在本实施例中，所述基板120上设有触控线路110，所述触控线路110包括触控电极111和触控引线112，所述触控引线112与所述触控电极111电连接，所述触控电极111上的信号经由触控引线112引出。所述触控线路110用于侦测用户的实际感应坐标，然后控制单元500根据实际感应坐标对应的命令完成相应的触控反馈。在本实施例中，所述基板120上还设有拉伸检测线路，所述 拉伸检测线路可以拉长，从而当基板120被拉伸时，所述拉伸检测线路也会同时被拉伸，所述拉伸检测线路被拉伸后，其阻值会发生改变。1 to 4c, in this embodiment, the substrate 120 is provided with a touch circuit 110, the touch circuit 110 includes touch electrodes 111 and touch leads 112, the touch leads 112 and The touch electrodes 111 are electrically connected, and the signals on the touch electrodes 111 are led out through the touch leads 112. The touch circuit 110 is used to detect the actual sensing coordinates of the user, and then the control unit 500 completes the corresponding touch feedback according to the commands corresponding to the actual sensing coordinates. In this embodiment, the substrate 120 is also provided with a stretch detection circuit, which can be stretched, so that when the substrate 120 is stretched, the stretch detection circuit will be stretched at the same time. After the stretch detection circuit is stretched, its resistance value will change.
在本实施例中，所述拉伸检测线路包括横向拉伸检测线路150及纵向拉伸检测线路，所述横向拉伸检测线路150的长度小于纵向拉伸检测线路的长度。其中，纵向拉伸检测线路包括第一纵向拉伸检测线路130和第二纵向拉伸检测线路140，也即所述横向拉伸检测线路150的长度小于第一纵向拉伸检测线路130和第二纵向拉伸检测线路140的长度之和，所述横向拉伸检测线路150与纵向拉伸检测线路至少部分重合。在本实施例中，第一纵向拉伸检测线路130、第二纵向拉伸检测线路140、横向拉伸检测线路150和触控线路110均位于基板120的同一面，例如均位于基板120的上表面上或者下表面，在此处为位于所述基板120的上表面。另外，在本发明的其他实施例中，还可以均位于下表面。另外，在本发明的其他实施例中，所述拉伸检测线路还可以仅包括第一纵向拉伸检测线路、第二纵向拉伸检测线路和横向拉伸检测线路其中之一或者其中之二。In this embodiment, the stretch detection circuit includes a transverse stretch detection circuit 150 and a longitudinal stretch detection circuit, and the length of the transverse stretch detection circuit 150 is less than the length of the longitudinal stretch detection circuit. Wherein, the longitudinal stretching detection circuit includes a first longitudinal stretching detection circuit 130 and a second longitudinal stretching detection circuit 140, that is, the length of the lateral stretching detection circuit 150 is smaller than that of the first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 130. The sum of the lengths of the longitudinal stretch detection circuit 140, the transverse stretch detection circuit 150 and the longitudinal stretch detection circuit at least partially overlap. In this embodiment, the first longitudinal stretching detection circuit 130, the second longitudinal stretching detection circuit 140, the lateral stretching detection circuit 150, and the touch circuit 110 are all located on the same surface of the substrate 120, for example, they are all located on the substrate 120. The upper or lower surface, here is the upper surface of the substrate 120. In addition, in other embodiments of the present invention, they may all be located on the lower surface. In addition, in other embodiments of the present invention, the stretching detection circuit may also include only one or two of the first longitudinal stretching detection circuit, the second longitudinal stretching detection circuit, and the lateral stretching detection circuit.
在本实施例中，所述拉伸检测线路靠近基板120的外轮廓且至少部分包围触控线路110，具体而言，第一纵向拉伸检测线路130、第二纵向拉伸检测线路140、横向拉伸检测线路150位于触控线路110的外围且至少部分包围所述触控线路110设置，第一纵向拉伸检测线路130、第二纵向拉伸检测线路140、横向拉伸检测线路150位于基板120的边缘区，而触控线路110位于基板120的边缘区以内的区域，可拉伸触控传感器的大部分面积上设有所述触控电极111，用于实现触控功能。在本实施例中，所述第一纵向拉伸检测线路130、第二纵向拉伸检测线路140主要沿基板120的纵向方向延伸，且所述第一纵向拉伸检测线路130、第二纵向拉伸检测线路140分别位于基板120的相对两侧，在图2中为分别位于基板120的左侧和右侧。In this embodiment, the stretch detection circuit is close to the outer contour of the substrate 120 and at least partially surrounds the touch circuit 110. Specifically, the first longitudinal stretch detection circuit 130, the second longitudinal stretch detection circuit 140, and the horizontal The stretch detection circuit 150 is located at the periphery of the touch circuit 110 and at least partially surrounds the touch circuit 110. The first longitudinal stretch detection circuit 130, the second longitudinal stretch detection circuit 140, and the lateral stretch detection circuit 150 are located on the substrate. The touch line 110 is located in the edge area of the substrate 120, and the touch electrode 111 is provided on most of the stretchable touch sensor to realize the touch function. In this embodiment, the first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 140 mainly extend along the longitudinal direction of the substrate 120, and the first longitudinal stretching detection circuit 130 and the second longitudinal stretching detection circuit 130 The extension detection lines 140 are respectively located on opposite sides of the substrate 120, and in FIG. 2 are respectively located on the left and right sides of the substrate 120.
在本实施例中，所述第一纵向拉伸检测线路130的两端分别设有第一端口A和第二端口B，所述第二纵向拉伸检测线路140的两端分别设有第三端口C和第四端口D。在本实施例中，所述第一端口A、第二端口B、第三端口C、第四端口D位于基板120的同一侧，在此处位于基板120的上侧。所述第一端口A相对所述第二端口B远离所述触控线路110设置，在本实施例中在横向上第一端口A相对第二端口B在基板120的外侧，第四端口D相对第三端口C远离所述触控线路110设置，在本实施例中在横向上第三端口C相对第四端口在基板120的内侧。所述横向拉伸检测线路150的两端分别共用所述第一端口A和第四端口D，也即横向拉伸检测线路150的两端分别为第一端口A和第四端口D，从而可以节省端口数量。所述第一端口A至第四端口D用于与外部装置电连接。In this embodiment, both ends of the first longitudinal extension detection circuit 130 are respectively provided with a first port A and a second port B, and both ends of the second longitudinal extension detection circuit 140 are respectively provided with a third port. Port C and the fourth port D. In this embodiment, the first port A, the second port B, the third port C, and the fourth port D are located on the same side of the substrate 120, and are located on the upper side of the substrate 120 here. The first port A is located away from the touch circuit 110 relative to the second port B. In this embodiment, in the lateral direction, the first port A is on the outside of the substrate 120 relative to the second port B, and the fourth port D is opposite to The third port C is located away from the touch circuit 110. In this embodiment, the third port C is located inside the substrate 120 relative to the fourth port in the lateral direction. The two ends of the lateral stretch detection circuit 150 share the first port A and the fourth port D respectively, that is, the two ends of the lateral stretch detection circuit 150 are the first port A and the fourth port D, respectively, so that Save the number of ports. The first port A to the fourth port D are used for electrical connection with external devices.
在本实施例中，阻值检测单元400检测拉伸前和拉伸后的拉伸检测线路的初始电阻值和拉伸电阻值。具体说来，可拉伸触控传感器在拉伸前，阻值检测单元400检测拉伸检测线路的初始电阻值，在拉伸后， 阻值检测单元400检测拉伸检测线路的拉伸电阻值。具体说来，在本实施例中，阻值检测单元400分别与第一端口A、第二端口B、第三端口C、第四端口D电连接，所述阻值检测单元400用于检测第一纵向拉伸检测线路130、第二纵向拉伸检测线路140和横向拉伸检测线路150拉伸前和拉伸后的电阻值。在本实施例中，在可拉伸触控传感器拉伸前，阻值检测单元400输出高电平给第一端口A(请参见图4a)，此时可以通过第二端口B测得流过第一纵向拉伸检测线路130的电流值，通过计算高电平与电流值的比值，可以获得第一纵向拉伸检测线路130的第一初始电阻值；阻值检测单元400输出高电平给第三端口C(请参见图4b)，此时通过第四端口D可以测得流过第二纵向拉伸检测线路140的电流值，通过计算高电平与电流值的比值，可以获得第二纵向拉伸检测线路140的第二初始电阻值；阻值检测单元400输出高电平给第一端口A(请参见图4c)，此时可以通过第四端口D测得流过横向拉伸检测线路150的电流值，通过计算高电平与电流值的比值，可以获得横向拉伸检测线路150的第三初始电阻值。此后，在可拉伸触控传感器拉伸后，阻值检测单元400输出高电平给第一端口A(请参见图4a)，同样可以经由计算获得第一纵向拉伸检测线路130的第一拉伸电阻值；阻值检测单元400输出高电平给第三端口C(请参见图4b)，同样可以经由计算获得第二纵向拉伸检测线路140的第二拉伸电阻值；阻值检测单元400输出高电平给第一端口A(请参见图4c)，同样可以经由计算获得横向拉伸检测线路150的第三拉伸电阻值。In this embodiment, the resistance value detection unit 400 detects the initial resistance value and the tension resistance value of the tension detection circuit before and after the tension. Specifically, before the stretchable touch sensor is stretched, the resistance detection unit 400 detects the initial resistance value of the stretch detection circuit, and after the stretch, the resistance detection unit 400 detects the stretch resistance value of the stretch detection circuit . Specifically, in this embodiment, the resistance detection unit 400 is electrically connected to the first port A, the second port B, the third port C, and the fourth port D, respectively, and the resistance detection unit 400 is used to detect the The resistance values of a longitudinal stretching detection circuit 130, a second longitudinal stretching detection circuit 140, and a transverse stretching detection circuit 150 before and after stretching. In this embodiment, before the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4a). At this time, the flow through the second port B can be measured. The current value of the first longitudinal extension detection circuit 130 can be obtained by calculating the ratio of the high level to the current value to obtain the first initial resistance value of the first longitudinal extension detection circuit 130; the resistance value detection unit 400 outputs a high level to The third port C (see Figure 4b). At this time, the current value flowing through the second longitudinal extension detection circuit 140 can be measured through the fourth port D. By calculating the ratio of the high level to the current value, the second The second initial resistance value of the longitudinal extension detection circuit 140; the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4c), at this time, the flow through the lateral extension detection can be measured through the fourth port D The current value of the line 150 can be obtained by calculating the ratio of the high level to the current value to obtain the third initial resistance value of the lateral extension detection line 150. After that, after the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4a), and the first longitudinal stretch detection circuit 130 can also be obtained through calculation. Stretch resistance value; the resistance value detection unit 400 outputs a high level to the third port C (see FIG. 4b), and the second stretch resistance value of the second longitudinal stretch detection circuit 140 can also be obtained through calculation; resistance value detection The unit 400 outputs a high level to the first port A (see FIG. 4c), and the third stretch resistance value of the lateral stretch detection circuit 150 can also be obtained through calculation.
在本实施例中，所述控制单元500与所述阻值检测单元400电连接，所述控制单元500输出使能信号给所述阻值检测单元400，所述阻值检测单元400根据使能信号的不同分时输出高电平信号或接地信号等给第一端口A、第二端口B、第三端口C及第四端口D中的任意一个端口，也即所述阻值检测单元400在不同时段输出不同信号至拉伸检测线路。在本实施例中，所述控制单元500用于根据所述拉伸检测线路的初始电阻值和拉伸电阻值计算得到被拉伸后拉伸检测线路的阻值变化量。所述控制单元500还用于根据阻值变化量对触控线路的信号进行调整。具体而言，在本实施例中，所述控制单元500用于根据阻值变化量对触控线路110拉伸后的感应坐标进行修正。另外，在本发明的其他实施例中，所述控制单元还用于根据阻值变化量对触控线路拉伸后的信号衰减量进行补偿。In this embodiment, the control unit 500 is electrically connected to the resistance detection unit 400, the control unit 500 outputs an enable signal to the resistance detection unit 400, and the resistance detection unit 400 Different time-sharing signals output high-level signals or ground signals to any one of the first port A, the second port B, the third port C, and the fourth port D, that is, the resistance value detection unit 400 is Different signals are output to the stretch detection circuit in different periods. In this embodiment, the control unit 500 is configured to calculate the resistance value change of the tensile detection circuit after being stretched according to the initial resistance value and the tensile resistance value of the tensile detection circuit. The control unit 500 is also used to adjust the signal of the touch circuit according to the change in resistance. Specifically, in this embodiment, the control unit 500 is configured to correct the sensing coordinates of the touch circuit 110 after being stretched according to the resistance change amount. In addition, in other embodiments of the present invention, the control unit is further configured to compensate the signal attenuation after the touch line is stretched according to the resistance change.
在本实施例中，所述控制单元500中存储有可拉伸触控传感器未拉伸时的初始感应坐标信息，在此处初始感应坐标信息为二维坐标信息，具体为横向和纵向坐标信息，控制单元500可以根据二维坐标信息与可拉伸触控传感器拉伸后的感应坐标进行比对以确认用户触控到可拉伸触控传感器上的实际位置，此初始感应坐标信息是最开始就已经人为设定好了。可拉伸触控传感器被拉伸后，阻值的变化量与拉伸的形变量呈线性关系，从而，控制单元500根据第一初始电阻值、第二初始电阻值、第一拉伸电阻值、第二拉伸电阻值计算得到被拉伸后拉伸检测线路的纵向阻值变化量，根据第三初始电阻值、第三拉伸电阻值计算得到被拉伸后拉伸检测线路的横向阻值变化量，进而控制单元500根据所述横向阻值变化量和 所述纵向阻值变化量计算得到所述拉伸检测线路的横向形变量和纵向形变量，控制单元500对初始感应坐标信息进行修正以得到拉伸后的感应坐标信息，也即对触控线路110拉伸后的感应坐标进行修正。另外，在本发明的其他实施例中，所述控制单元根据所述横向阻值变化量和所述纵向阻值变化量可以直接对初始感应坐标信息进行修正以得到拉伸感应坐标信息。此后，控制单元500根据拉伸感应坐标信息可以正确识别用户在可拉伸触控传感器拉伸后的实际触控位置，进而控制单元500根据实际触控位置可以找到对应的触控命令，实现正确的触控反馈，从而不会给用户的触控操作带来困扰。另外，在本发明的其他实施例中，所述控制单元还可以根据所述横向阻值变化量和纵向阻值变化量对触控线路拉伸后的信号衰减量进行补偿，例如：所述控制单元根据所述横向阻值变化量和所述纵向阻值变化量计算得到所述拉伸检测线路的横向形变量和纵向形变量；所述控制单元根据所述横向形变量和纵向形变量触控线路拉伸后的信号衰减量进行补偿，从而使可拉伸传感器的性能不会受到拉伸的影响。另外，在本发明的其他实施例中，所述控制单元既可以对触控线路拉伸后的感应坐标进行修正，也可以对触控线路拉伸后的信号衰减量进行补偿。In this embodiment, the control unit 500 stores initial sensing coordinate information when the stretchable touch sensor is not stretched, where the initial sensing coordinate information is two-dimensional coordinate information, specifically horizontal and vertical coordinate information , The control unit 500 can compare the two-dimensional coordinate information with the stretchable touch sensor's stretched sensing coordinates to confirm that the user touches the actual position on the stretchable touch sensor. This initial sensing coordinate information is the most It has been artificially set from the beginning. After the stretchable touch sensor is stretched, the change in resistance value has a linear relationship with the stretched deformation amount. Therefore, the control unit 500 is based on the first initial resistance value, the second initial resistance value, and the first stretch resistance value. , The second tensile resistance value is calculated to obtain the longitudinal resistance change of the tensile test circuit after being stretched, and the transverse resistance of the tensile test circuit after being stretched is calculated according to the third initial resistance value and the third tensile resistance value. The control unit 500 calculates the transverse deformation and the longitudinal deformation of the stretch detection line according to the transverse resistance change and the longitudinal resistance change, and the control unit 500 performs the initial sensing coordinate information The correction is performed to obtain the sensing coordinate information after stretching, that is, the sensing coordinate after the touch circuit 110 is stretched is corrected. In addition, in other embodiments of the present invention, the control unit may directly correct the initial induction coordinate information according to the lateral resistance change amount and the longitudinal resistance change amount to obtain stretch induction coordinate information. After that, the control unit 500 can correctly recognize the user's actual touch position after the stretchable touch sensor is stretched according to the stretch sensing coordinate information, and then the control unit 500 can find the corresponding touch command according to the actual touch position to achieve the correct The touch feedback will not cause trouble to the user’s touch operation. In addition, in other embodiments of the present invention, the control unit may also compensate for the signal attenuation after the touch line is stretched according to the lateral resistance change and the longitudinal resistance change, for example: the control The unit calculates the lateral deformation amount and the longitudinal deformation amount of the stretch detection circuit according to the lateral resistance value change amount and the longitudinal resistance value change amount; the control unit touches according to the lateral deformation amount and the longitudinal deformation amount The signal attenuation after the line is stretched is compensated, so that the performance of the stretchable sensor will not be affected by the stretch. In addition, in other embodiments of the present invention, the control unit may not only correct the sensing coordinates after the touch circuit is stretched, but also compensate the signal attenuation after the touch circuit is stretched.
在本实施例中，所述拉伸检测线路包括信号输入端、第一信号输出端及第二信号输出端，控制单元500在信号输入端输入信号时，根据第一信号输出端的输出结果确定纵向阻值变化量，根据第二信号输出端的输出结果确定横向阻值变化量。在一个实施例中，所述第一端口A为拉伸检测线路的信号输入端，所述第二端口B为拉伸检测线路的第一信号输出端，所述第四端口D为拉伸检测线路的第二信号输出端。在另外一个实施例中，所述第一端口A和第三端口C均为拉伸检测线路的信号输入端，所述第二端口B和第四端口D为拉伸检测线路的第一信号输出端，且所述第四端口D为拉伸检测线路的第二信号输出端，也即第一信号输出端和第二信号输出端共用第四端口。另外，在本发明的其他实施例中，所述第一端口A、第三端口C也可以作为信号输出端，所述第二端口B、第四端口D也可以作为信号输入端。In this embodiment, the stretch detection circuit includes a signal input terminal, a first signal output terminal, and a second signal output terminal. When the control unit 500 inputs a signal at the signal input terminal, it determines the longitudinal direction according to the output result of the first signal output terminal. The resistance value change amount is determined according to the output result of the second signal output terminal. In one embodiment, the first port A is the signal input end of the tensile detection circuit, the second port B is the first signal output end of the tensile detection circuit, and the fourth port D is the tensile detection circuit. The second signal output terminal of the line. In another embodiment, the first port A and the third port C are both the signal input ends of the tensile detection circuit, and the second port B and the fourth port D are the first signal output of the tensile detection circuit. The fourth port D is the second signal output end of the stretch detection circuit, that is, the first signal output end and the second signal output end share the fourth port. In addition, in other embodiments of the present invention, the first port A and the third port C may also be used as signal output terminals, and the second port B and the fourth port D may also be used as signal input terminals.
请参见图2和图3，在本实施例中，所述第一纵向拉伸检测线路130位于触控线路110的左侧，也即位于基板120的左侧边缘，所述第一纵向拉伸检测线路130包括第一横向部132、两条第一纵向部131；所述第二纵向拉伸检测线路140位于触控线路110的右侧，也即位于基板120的右侧边缘，所述第二纵向拉伸检测线路140包括第二横向部142、两条第二纵向部141。2 and 3, in this embodiment, the first longitudinal stretch detection circuit 130 is located on the left side of the touch circuit 110, that is, on the left edge of the substrate 120, the first longitudinal stretch The detection circuit 130 includes a first lateral portion 132 and two first longitudinal portions 131; the second longitudinal stretch detection circuit 140 is located on the right side of the touch circuit 110, that is, on the right edge of the substrate 120, The two longitudinal stretch detection lines 140 include a second transverse portion 142 and two second longitudinal portions 141.
在本实施例中，两条所述第一纵向部131的末端分别与第一横向部132的两端电连接，从而形成一个小的“U”型，两条所述第一纵向部131的首端分别为第一端口A、第二端口B；所述第二纵向拉伸检测线路140包括两条第二纵向部141，两条所述第二纵向部141的末端分别与第二横向部142的两端电连接，从而形成一个小的“U”型，两条所述第二纵向部141的首端分别为第三端口C、第四端口D。In this embodiment, the ends of the two first longitudinal portions 131 are respectively electrically connected to the two ends of the first transverse portion 132, thereby forming a small "U" shape. The head ends are respectively the first port A and the second port B; the second longitudinal stretch detection circuit 140 includes two second longitudinal portions 141, and the ends of the two second longitudinal portions 141 are respectively connected to the second transverse portion The two ends of the 142 are electrically connected to form a small "U" shape, and the head ends of the two second longitudinal portions 141 are the third port C and the fourth port D respectively.
在本实施例中，所述第一横向部132和第二横向部142经由横向线路151电连接，与第一端口A相 连的第一纵向部131、所述第一横向部132、横向线路151、第二横向部142、与第四端口D相连的第二纵向部141共同构成所述横向拉伸检测线路150，也即从第一端口A经由横向线路151到第四端口D形成的电性线路为横向拉伸检测线路150，所述横向拉伸检测线路150为一个“U”型。In this embodiment, the first lateral portion 132 and the second lateral portion 142 are electrically connected via a lateral line 151, and the first longitudinal portion 131, the first lateral portion 132, and the lateral line 151 are connected to the first port A. , The second transverse portion 142 and the second longitudinal portion 141 connected to the fourth port D together constitute the transverse stretch detection circuit 150, that is, the electrical property formed from the first port A through the transverse circuit 151 to the fourth port D The line is a transverse stretch detection line 150, and the transverse stretch detection line 150 is a "U" shape.
在本实施例中，所述第一纵向部131与第二纵向部141互相平行，均沿基板120的纵向方向延伸，在图2中为竖直方向，所述第一横向部132、第二横向部142和横向线路151位于同一直线上，该条直线与第一纵向部131、第二纵向部141垂直，在图2中该条直线为水平方向。在本实施例中，所述横向线路151位于第一横向部132和第二横向部142之间。In this embodiment, the first longitudinal portion 131 and the second longitudinal portion 141 are parallel to each other, and both extend along the longitudinal direction of the substrate 120, which is the vertical direction in FIG. The horizontal portion 142 and the horizontal line 151 are located on the same straight line, and the straight line is perpendicular to the first longitudinal portion 131 and the second longitudinal portion 141. In FIG. 2, the straight line is a horizontal direction. In this embodiment, the lateral line 151 is located between the first lateral portion 132 and the second lateral portion 142.
请参见图1和图5，在本实施例中，所述控制单元500与阻值检测单元400电连接，控制单元500发送使能信号和其他信号给所述阻值检测单元400。在本实施例中，所述使能信号呈周期性，所述使能信号的周期T包括第一总时间段T1和第二总时间段T2，在第一总时间段T1所述使能信号为高电平，在第二总时间段T2所述使能信号为低电平。当所述控制单元500发送给阻值检测单元400的使能信号为高电平时，所述阻值检测单元400对拉伸检测线路的初始电阻值和拉伸电阻值进行检测，也即所述拉伸检测线路在第一总时间段接收高电平信号而输出电流，当所述控制单元500发送给阻值检测单元400的使能信号为低电平时，所述阻值检测单元400发送接地信号给所述拉伸检测线路，以降低外部信号对触控线路的影响，也即所述拉伸检测线路在第二总时间段接地而对触控线路屏蔽外部静电。1 and 5, in this embodiment, the control unit 500 is electrically connected to the resistance detection unit 400, and the control unit 500 sends an enable signal and other signals to the resistance detection unit 400. In this embodiment, the enable signal is periodic, and the period T of the enable signal includes a first total time period T1 and a second total time period T2. The enable signal is in the first total time period T1 At a high level, the enable signal is at a low level during the second total time period T2. When the enable signal sent by the control unit 500 to the resistance detection unit 400 is at a high level, the resistance detection unit 400 detects the initial resistance value and the tensile resistance value of the tensile detection circuit, that is, the The stretch detection circuit receives a high-level signal during the first total time period and outputs a current. When the enable signal sent by the control unit 500 to the resistance detection unit 400 is low, the resistance detection unit 400 sends a ground The signal is given to the stretch detection circuit to reduce the influence of external signals on the touch circuit, that is, the stretch detection circuit is grounded during the second total time period to shield the touch circuit from external static electricity.
在本实施例中，所述使能信号的变化主要有以下三种方式：In this embodiment, the enable signal changes mainly in the following three ways:
1、固定模式，在此模式下第一总时间段T1、第二总时间段T2的时间是固定，也即无论可拉伸触控传感器是否被拉伸，所述第一总时间段T1、第二总时间段T2的时长是不变的，呈周期性的切换，本实施例中采用的是这种模式。1. Fixed mode. In this mode, the first total time period T1 and the second total time period T2 are fixed, that is, regardless of whether the stretchable touch sensor is stretched, the first total time period T1, The duration of the second total time period T2 is constant, and it is switched periodically. This mode is adopted in this embodiment.
2、动态模式，例如，在此模式下，当检测到用户进行触控时，切换到进入第一总时间段T1，当拉伸检测线路的阻值在一定时长不发生改变时，切换到第二总时间段T2。2. Dynamic mode, for example, in this mode, when the user is detected to touch, switch to enter the first total time period T1, when the resistance of the stretch detection line does not change for a certain period of time, switch to the first 2. Total time period T2.
3、混合模式，例如，在此模式下，首先第一总时间段T1、第二总时间段T2的时长是固定的，并呈周期性的切换；当检测到用户进行触控时，直接切换到第一总时间段T1，当拉伸检测线路的阻值在一定时长不发生改变时，切换到第二总时间段T2。3. Mixed mode, for example, in this mode, first, the duration of the first total time period T1 and the second total time period T2 are fixed and switched periodically; when the user is detected to touch, switch directly By the first total time period T1, when the resistance of the stretch detection line does not change for a certain period of time, switch to the second total time period T2.
在本实施例中，所述第一总时间段T1包括第一时间段、第二时间段和第三时间段，所述第二总时间段T2包括第四时间段。在第一时间段所述阻值检测单元400发送某一高电平给第一端口A，从而可以侦测获得第一纵向拉伸检测线路130上的电流值，进而可以计算获得第一纵向拉伸检测线路130的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第一初始电阻值，当可拉伸触控传感器被拉伸时，此 电阻值为第一拉伸电阻值；同理，在第二时间段所述阻值检测单元400发送某一高电平给第三端口C，进而可以计算获得第二纵向拉伸检测线路140的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第二初始电阻值，当可拉伸触控传感器被拉伸时，此电阻值为第二拉伸电阻值；同理，在第三时间段所述阻值检测单元400发送某一电压值给第一端口A，进而可以计算获得横向拉伸检测线路150的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第三初始电阻值，当可拉伸触控传感器被拉伸时，此电阻值为第三拉伸电阻值。所述第一时间段、第二时间段、第三时间段互不重叠。另外，在本发明的其他实施例中，在第一时间段所述阻值检测单元可以直接获得第一纵向拉伸检测线路的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第一初始电阻值，当可拉伸触控传感器被拉伸时，此电阻值为第一拉伸电阻值；在第二时间段所述阻值检测单元可以直接获得第二纵向拉伸检测线路的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第二初始电阻值，当可拉伸触控传感器被拉伸时，此电阻值为第二拉伸电阻值；在第二时间段所述阻值检测单元可以直接获得横向拉伸检测线路的电阻值，当可拉伸触控传感器未被拉伸时，此电阻值为第三初始电阻值，当可拉伸触控传感器被拉伸时，此电阻值为第三拉伸电阻值。在本实施例中，所述第一总时间段可以包括一个第一时间段、第二时间段和第三时间段的总和，也可以包括多个第一时间段、第二时间段和第三时间段的总和。在本实施例中，在第四时间段所述阻值检测单元400发送接地信号给第一端口A，以屏蔽其他信号对触控线路的干扰。在本实施例中，所述第二总时间段可以包括一个第四时间段，也可以包括多个第四时间段。In this embodiment, the first total time period T1 includes a first time period, a second time period, and a third time period, and the second total time period T2 includes a fourth time period. In the first time period, the resistance value detection unit 400 sends a certain high level to the first port A, so that the current value on the first longitudinal extension detection circuit 130 can be detected, and the first longitudinal extension can be calculated. The resistance value of the stretch detection circuit 130. When the stretchable touch sensor is not stretched, the resistance value is the first initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the first resistance value. Similarly, in the second time period, the resistance value detection unit 400 sends a certain high level to the third port C, and then the resistance value of the second longitudinal extension detection circuit 140 can be calculated. When the stretchable touch sensor is not stretched, the resistance value is the second initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the second stretch resistance value; the same goes for the third time The resistance value detection unit 400 in the paragraph above sends a certain voltage value to the first port A, and then the resistance value of the lateral stretch detection circuit 150 can be calculated. When the stretchable touch sensor is not stretched, the resistance value is The third initial resistance value, when the stretchable touch sensor is stretched, the resistance value is the third stretch resistance value. The first time period, the second time period, and the third time period do not overlap with each other. In addition, in other embodiments of the present invention, the resistance value detection unit can directly obtain the resistance value of the first longitudinal stretch detection circuit in the first time period. When the stretchable touch sensor is not stretched, this The resistance value is the first initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the first stretch resistance value; in the second time period, the resistance value detection unit can directly obtain the second longitudinal stretch The resistance value of the stretch detection circuit. When the stretchable touch sensor is not stretched, the resistance value is the second initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the second stretch Resistance value; in the second time period, the resistance value detection unit can directly obtain the resistance value of the lateral stretch detection circuit. When the stretchable touch sensor is not stretched, the resistance value is the third initial resistance value. When the stretchable touch sensor is stretched, the resistance value is the third stretch resistance value. In this embodiment, the first total time period may include the sum of a first time period, a second time period, and a third time period, or may include multiple first time periods, second time periods, and third time periods. The sum of time periods. In this embodiment, the resistance value detection unit 400 sends a ground signal to the first port A in the fourth time period to shield the interference of other signals on the touch circuit. In this embodiment, the second total time period may include a fourth time period, or may include multiple fourth time periods.
在本实施例中，第一总时间段T1、第二总时间段T2的和是固定的，也即一个周期T是固定的，阻值检测精细度越高，第一总时间段T1内拉伸检测线路被检测的次数就越多，也即包括第一时间段、第二时间段和第三时间段的第一总时间段T1的数目越多，从而第一总时间段T1占比上升，第二总时间段T2占比下降，可能导致防干扰能力下降；反之，阻值检测精细度越低，第一总时间段T1内拉伸检测线路被检测的次数就越少，也即包括第一时间段、第二时间段和第三时间段的第一总时间段T1的数目越少，从而第一总时间段T1占比下降，第二总时间段T2占比上升，防干扰能力提高。In this embodiment, the sum of the first total time period T1 and the second total time period T2 is fixed, that is, a period T is fixed. The higher the resistance detection precision, the higher the first total time period T1 The greater the number of times that the extension detection line is detected, that is, the greater the number of the first total time period T1 including the first time period, the second time period and the third time period, so that the proportion of the first total time period T1 increases , The decrease in the proportion of the second total time period T2 may lead to a decrease in the anti-interference ability; conversely, the lower the resistance detection precision, the fewer times the tensile detection line is detected in the first total time period T1, which means that The smaller the number of the first total time period T1 of the first time period, the second time period, and the third time period, the less the first total time period T1 takes up, the second total time period T2 takes up, and the anti-interference ability improve.
在本实施例中，所述阻值检测单元和所述控制单元位于不同的电路板上，但本发明不限于此，在本发明的其他实施例中，所述阻值检测单元和所述控制单元还可以位于同一个电路板上，或者位于同一个芯片内。In this embodiment, the resistance value detection unit and the control unit are located on different circuit boards, but the present invention is not limited to this. In other embodiments of the present invention, the resistance value detection unit and the control unit The units can also be located on the same circuit board or in the same chip.
以下详细描述如何计算拉伸后横向形变量和纵向形变量。The following describes in detail how to calculate the transverse and longitudinal deformation after stretching.
请参见图4a-图4c，在未拉伸时阻值检测单元400可以测得第一初始电阻值R0(AB)、第二初始电阻值R0(CD)、第三初始电阻值R0(AD)，其中，AB是指从第一端口A到第二端口B之间的线路，也即第一纵向拉伸检测线路，CD是指从第三端口C到第四端口D之间的线路，也即第二纵向拉伸检测线路， AD是指从第一端口A到第四端口D之间的线路，也即横向拉伸检测线路。在拉伸后可以测得第一拉伸电阻值RL(AB)(请见图4a)、第二拉伸电阻值RL(CD)(请见图4b)、第三拉伸电阻值RL(AD)(请见图4c)，进而，触控线路110左侧纵向阻值变化率E(AB)＝(RL(AB)-R0(AB))/R0(AB)，左侧纵向阻值变化率RE(AB)是指第一端口A到第二端口B之间因为拉伸造成的阻值变化，由于第一端口A到第二端口B之间的第一纵向拉伸检测线路130大部分是在纵向上，从而阻值变化率RE(AB)能代表左侧纵向阻值变化，从而，触控线路110左侧纵向上的电阻值均可以通过乘以RE(AB)进行修正或补偿；触控线路110右侧纵向阻值变化量可以采用类似方法处理可得RE(CD)＝(RL(CD)-R0(CD))/R0(CD)，从而，触控线路110右侧纵向上的电阻值均可以通过乘以RE(AB)进行修正或补偿；针对横向方向，横向拉伸阻值变化率RE(AD)＝(RL(AD)-RL(AB)/2-RL(CD)/2–(R0(AD)-R0(AB)/2-R0(CD)/2))/(R0(AD)-R0(AB)/2-R0(CD)/2)，在这里，阻值变化率RE(AD)测得的是横向拉伸检测线路中的横向部分的线路由于拉伸而导致的电阻值变化，具体为第一横向部132的一半长度、第二横向部142的一半长度和横向线路151由于拉伸造成的电阻值的变化量，由于第一横向部132、第二横向部142、横向线路151均在横向上延伸，从而RE(AD)可以代表横向拉伸阻值变化量，从而，横向上的电阻值均可以通过乘以RE(AD)进行修正或补偿。在本实施例，触控线路110中心处的纵向阻值变化量可以通过RE(AB)代表，或者通过RE(CD)代表，或者通过RE(AB)与RE(CD)的均值代表，触控线路110上的横向阻值变化量可以通过RE(AD)代表，进而可以对触控线路110上的纵向阻值变化量和横向阻值变化量进行修正或补偿。可以理解地，因为基板被拉伸时基本可以保持单向形变量相同，因此只要测得RE(AB)与RE(CD)中的一个即可获知纵向阻值变化率。4a-4c, the resistance detection unit 400 can measure the first initial resistance value R0 (AB), the second initial resistance value R0 (CD), and the third initial resistance value R0 (AD) when it is not stretched. , Where AB refers to the line from the first port A to the second port B, that is, the first longitudinal extension detection line, and CD refers to the line from the third port C to the fourth port D, also That is, the second longitudinal stretch detection line, AD refers to the line from the first port A to the fourth port D, that is, the transverse stretch detection line. After stretching, the first tensile resistance value RL(AB) (see Figure 4a), the second tensile resistance value RL(CD) (see Figure 4b), and the third tensile resistance value RL(AD) can be measured. ) (See Figure 4c), and further, the change rate of the longitudinal resistance on the left side of the touch circuit 110 E(AB)=(RL(AB)-R0(AB))/R0(AB), the change rate of the longitudinal resistance on the left side RE(AB) refers to the resistance change caused by stretching between the first port A and the second port B. Since the first longitudinal stretching detection circuit 130 between the first port A and the second port B is mostly In the longitudinal direction, the resistance change rate RE(AB) can represent the left longitudinal resistance change. Therefore, the resistance value in the left longitudinal direction of the touch circuit 110 can be corrected or compensated by multiplying RE(AB); The change in the longitudinal resistance on the right side of the control circuit 110 can be processed in a similar way to obtain RE(CD)=(RL(CD)-R0(CD))/R0(CD). The resistance value can be corrected or compensated by multiplying RE(AB); for the transverse direction, the change rate of the transverse tensile resistance value RE(AD)=(RL(AD)-RL(AB)/2-RL(CD)/ 2–(R0(AD)-R0(AB)/2-R0(CD)/2))/(R0(AD)-R0(AB)/2-R0(CD)/2), here, the resistance The rate of change RE(AD) measured is the resistance value change of the transverse part of the transverse stretch detection circuit due to stretching, specifically half the length of the first transverse part 132 and half the length of the second transverse part 142 And the change in resistance value of the transverse line 151 due to stretching. Since the first transverse portion 132, the second transverse portion 142, and the transverse line 151 all extend in the transverse direction, RE(AD) can represent the change in transverse tensile resistance. Therefore, the resistance value in the lateral direction can be corrected or compensated by multiplying RE(AD). In this embodiment, the vertical resistance change at the center of the touch circuit 110 can be represented by RE (AB), or by RE (CD), or by the average value of RE (AB) and RE (CD). The change in the lateral resistance on the line 110 can be represented by RE(AD), and the change in the longitudinal resistance and the change in the lateral resistance on the touch circuit 110 can be corrected or compensated. Understandably, because the substrate can basically maintain the same unidirectional deformation amount when it is stretched, only one of RE (AB) and RE (CD) can be measured to obtain the longitudinal resistance change rate.
请继续参见图4a-图4c，在本实施例中，触控线路110左侧纵向形变量为ΔL(AB)＝(RL(AB)-R0(AB))/2K＝RE(AB)*R0(AB)/2K，由于形变量与阻值变化量呈线性关系，K为比例系数，K为计算得到的常数，从而，触控线路110左侧纵向坐标可以通过乘以ΔL(AB)进行修正或补偿；触控线路110右侧纵向形变量可以采用类似方法处理可得ΔL(CD)＝(RL(CD)-R0(CD))/2K＝RE(CD)*R0(CD)/2K，从而，触控线路110右侧纵向坐标可以通过乘以ΔL(CD)进行修正或补偿；针对横向方向，横向拉伸形变量ΔL(AD)＝(RL(AD)-RL(AB)/2-RL(CD)/2–(R0(AD)-R0(AB)/2-R0(CD)/2))/2K＝RE(AD)*(R0(AD)-R0(AB)/2-R0(CD)/2)/2K，从而，触控线路110横向长度可以通过乘以ΔL(AD)进行修正或补偿。在本实施例，触控线路110上的纵向形变量可以通过ΔL(AB)代表，或者通过ΔL(CD)代表，或者通过ΔL(AB)与ΔL(CD)的均值代表。从而，通过形变量修正，可以修正初始感应坐标信息，从而实现对触控线路拉伸后的感应坐标进行修正。Please continue to refer to FIGS. 4a-4c. In this embodiment, the longitudinal deformation amount on the left side of the touch circuit 110 is ΔL(AB)=(RL(AB)-R0(AB))/2K=RE(AB)*R0 (AB)/2K, since the deformation variable has a linear relationship with the resistance change, K is the proportional coefficient, and K is the calculated constant. Therefore, the left longitudinal coordinate of the touch circuit 110 can be corrected by multiplying by ΔL(AB) Or compensation; the longitudinal deformation on the right side of the touch circuit 110 can be processed in a similar way to obtain ΔL(CD)=(RL(CD)-R0(CD))/2K=RE(CD)*R0(CD)/2K, Therefore, the longitudinal coordinate on the right side of the touch circuit 110 can be corrected or compensated by multiplying by ΔL(CD); for the horizontal direction, the transverse stretch deformation ΔL(AD)=(RL(AD)-RL(AB)/2- RL(CD)/2--(R0(AD)-R0(AB)/2-R0(CD)/2))/2K=RE(AD)*(R0(AD)-R0(AB)/2-R0 (CD)/2)/2K, thus, the lateral length of the touch circuit 110 can be corrected or compensated by multiplying by ΔL(AD). In this embodiment, the longitudinal deformation on the touch circuit 110 may be represented by ΔL(AB), or by ΔL(CD), or by the average value of ΔL(AB) and ΔL(CD). Therefore, through the deformation correction, the initial sensing coordinate information can be corrected, so as to realize the correction of the sensing coordinate after the touch line is stretched.
在本实施例中，所述第一纵向部131、第二纵向部141、第一横向部132、第二横向部142、横向线 路151均由导线构成，该导线具有一定的可拉伸性，是由导电性材料(例如银胶、碳浆、液态金属等)通过特定工艺(比如印刷、喷涂、转印等)制成。In this embodiment, the first longitudinal portion 131, the second longitudinal portion 141, the first transverse portion 132, the second transverse portion 142, and the transverse line 151 are all composed of wires, which have certain stretchability. It is made of conductive materials (such as silver glue, carbon paste, liquid metal, etc.) through specific processes (such as printing, spraying, transfer, etc.).
在本实施例中，所述第一纵向部131的长度远大于第一横向部132的长度，从而可以尽量减少第一横向部132对纵向长度形变量ΔL(AB)的影响。所述第二纵向部141的长度远大于第二横向部142的长度，从而可以尽量减少第二横向部142对纵向长度形变量ΔL(CD)的影响。在本实施例中，所述第一纵向部131长度与第一横向部132长度的比值大于或等于10，所述第二纵向部141长度与第二横向部142长度的比值大于或等于10。In this embodiment, the length of the first longitudinal portion 131 is much greater than the length of the first lateral portion 132, so that the influence of the first lateral portion 132 on the longitudinal length deformation ΔL(AB) can be minimized. The length of the second longitudinal portion 141 is much greater than the length of the second transverse portion 142, so that the influence of the second transverse portion 142 on the longitudinal length deformation ΔL(CD) can be minimized. In this embodiment, the ratio of the length of the first longitudinal portion 131 to the length of the first transverse portion 132 is greater than or equal to 10, and the ratio of the length of the second longitudinal portion 141 to the length of the second transverse portion 142 is greater than or equal to 10.
另外，本发明还提供一种可拉伸触控传感器的控制方法，该可拉伸触控传感器的控制方法对应前面描述的可拉伸触控传感器，可拉伸触控传感器包括触控线路、基板、拉伸检测线路、阻值检测单元以及控制单元，由于前面对可拉伸触控传感器进行了详细的描述，在此就不再赘述。请参见图1和图6，所述可拉伸触控传感器的控制方法包括以下步骤：In addition, the present invention also provides a control method for a stretchable touch sensor. The control method for the stretchable touch sensor corresponds to the stretchable touch sensor described above. The stretchable touch sensor includes a touch circuit, The substrate, the stretch detection circuit, the resistance value detection unit, and the control unit, as the stretchable touch sensor has been described in detail above, will not be repeated here. 1 and 6, the control method of the stretchable touch sensor includes the following steps:
S110：在可拉伸触控传感器非拉伸状态时检测所述拉伸检测线路的初始电阻值；S110: Detect the initial resistance value of the stretch detection circuit when the stretchable touch sensor is in a non-stretched state;
在本实施例中，在可拉伸触控传感器拉伸前，阻值检测单元400输出高电平给拉伸检测线路，从而可以计算获得拉伸检测线路的初始电阻值。具体而言，所述拉伸检测线路包括第一纵向拉伸检测线路130、第二纵向拉伸检测线路140和横向拉伸检测线路150。请结合参见图4a-图4c，在本实施例中，在可拉伸触控传感器拉伸前，阻值检测单元400输出高电平给第一端口A(请参见图4a)，此时阻值检测单元400可以计算获得第一纵向拉伸检测线路130的第一初始电阻值；阻值检测单元400输出高电平给第三端口C(请参见图4b)，此时阻值检测单元400可以计算获得第二纵向拉伸检测线路140的第二初始电阻值；阻值检测单元400输出高电平给第一端口A(请参见图4c)，此时阻值检测单元400可以计算获得横向拉伸检测线路150的第三初始电阻值。In this embodiment, before the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the stretch detection circuit, so that the initial resistance value of the stretch detection circuit can be calculated. Specifically, the stretching detection circuit includes a first longitudinal stretching detection circuit 130, a second longitudinal stretching detection circuit 140, and a transverse stretching detection circuit 150. Please refer to FIGS. 4a-4c in combination. In this embodiment, before the stretchable touch sensor is stretched, the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4a). The value detection unit 400 can calculate the first initial resistance value of the first longitudinal extension detection circuit 130; the resistance value detection unit 400 outputs a high level to the third port C (see FIG. 4b), and the resistance value detection unit 400 now The second initial resistance value of the second longitudinal extension detection circuit 140 can be calculated; the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4c), and the resistance detection unit 400 can calculate the horizontal The third initial resistance value of the detection circuit 150 is stretched.
S120：在可拉伸触控传感器拉伸状态时检测所述拉伸检测线路的拉伸电阻值；S120: Detect the stretch resistance value of the stretch detection circuit when the stretchable touch sensor is stretched;
在本实施例中，在可拉伸触控传感器拉伸后，阻值检测单元400输出高电平给拉伸检测线路，从而可以计算获得拉伸检测线路的拉伸电阻值。请结合参见图4a-图4c，在本实施例中，在可拉伸触控传感器拉伸后，阻值检测单元400输出高电平给第一端口A(请参见图4a)，此时可以计算获得第一纵向拉伸检测线路130的第一拉伸电阻值；阻值检测单元400输出高电平给第三端口C(请参见图4b)，此时可以计算获得第二纵向拉伸检测线路140的第二拉伸电阻值；阻值检测单元400输出高电平给第一端口A(请参见图4c)，此时可以计算获得横向拉伸检测线路150的第三拉伸电阻值。In this embodiment, after the stretchable touch sensor is stretched, the resistance value detection unit 400 outputs a high level to the stretch detection circuit, so that the stretch resistance value of the stretch detection circuit can be calculated. Please refer to FIGS. 4a-4c in combination. In this embodiment, after the stretchable touch sensor is stretched, the resistance detection unit 400 outputs a high level to the first port A (see FIG. 4a). The first extension resistance value of the first longitudinal extension detection circuit 130 is calculated; the resistance value detection unit 400 outputs a high level to the third port C (see FIG. 4b), and the second longitudinal extension detection can be obtained by calculation. The second tensile resistance value of the circuit 140; the resistance value detection unit 400 outputs a high level to the first port A (see FIG. 4c), and the third tensile resistance value of the lateral tensile detection circuit 150 can be calculated at this time.
S130：根据所述初始电阻值、拉伸电阻值计算得到被拉伸后可拉伸触控传感器的阻值变化量；S130: Calculate the resistance value change of the stretchable touch sensor after being stretched according to the initial resistance value and the stretch resistance value;
在本实施例中，控制单元500根据所述初始电阻值、拉伸电阻值计算得到拉伸后可拉伸触控传感器的阻值变化量，在本实施例中阻值变化量包括横向阻值变化量和纵向阻值变化量，具体而言，所述控制单元500根据第一初始电阻值、第一拉伸电阻值计算获得第一纵向阻值变化量，根据第二初始电阻值、第二拉伸电阻值计算获得第二纵向阻值变化量，控制单元500根据第一纵向阻值变化量、第二纵向阻值变化量计算获得纵向阻值变化量；控制单元500根据第三初始电阻值、第三拉伸电阻值计算获得横向阻值变化量。In this embodiment, the control unit 500 calculates the resistance value change of the stretchable touch sensor after stretching according to the initial resistance value and the stretching resistance value. In this embodiment, the resistance value change includes the lateral resistance value. Specifically, the control unit 500 calculates the first longitudinal resistance change according to the first initial resistance value and the first tensile resistance value, and obtains the first longitudinal resistance change according to the second initial resistance value and the second The tensile resistance value is calculated to obtain the second longitudinal resistance change, and the control unit 500 calculates the longitudinal resistance change according to the first longitudinal resistance change and the second longitudinal resistance change; the control unit 500 calculates the longitudinal resistance change according to the third initial resistance value , The third tensile resistance value is calculated to obtain the lateral resistance change.
S140：根据阻值变化量对所述触控线路的信号进行调整。S140: Adjust the signal of the touch circuit according to the amount of resistance change.
具体而言，在本实施例中，步骤S140包括：根据阻值变化量对触控线路拉伸后的感应坐标进行修正。Specifically, in this embodiment, step S140 includes: correcting the sensing coordinates of the stretched touch circuit according to the resistance change.
在本实施例中，控制单元500中存储有初始感应坐标信息，从而控制单元500可以直接获取可拉伸触控传感器的初始感应坐标信息。控制单元400根据所述阻值变化量对触控线路拉伸后的感应坐标进行修正，具体根据横向阻值变化量和纵向阻值变化量对触控线路拉伸后的感应坐标进行修正。在本发明的其他实施例中，步骤S140包括：根据阻值变化量对触控线路拉伸后的信号衰减量进行补偿。In this embodiment, the control unit 500 stores initial sensing coordinate information, so that the control unit 500 can directly obtain the initial sensing coordinate information of the stretchable touch sensor. The control unit 400 corrects the stretched sensing coordinates of the touch circuit according to the resistance change, and specifically corrects the stretched sensing coordinates of the touch circuit according to the lateral resistance change and the longitudinal resistance change. In other embodiments of the present invention, step S140 includes: compensating for the signal attenuation after the touch circuit is stretched according to the resistance change.
另外，在本发明中，步骤“根据阻值变化量对触控线路拉伸后的感应坐标进行修正”具体包括：In addition, in the present invention, the step of "correcting the induced coordinates after the touch line is stretched according to the change in resistance value" specifically includes:
根据所述阻值变化量计算得到所述拉伸检测线路的形变量；Calculating the amount of deformation of the stretch detection circuit according to the amount of change in resistance;
根据所述形变量对触控线路拉伸后的感应坐标进行修正。According to the deformation amount, the induced coordinate after the touch line is stretched is corrected.
在本实施例中，阻值变化量与形变量呈线性关系，从而，控制单元500可以根据所述阻值变化量计算得到所述拉伸检测线路的形变量，具体根据横向阻值变化量和纵向阻值变化量计算得到所述拉伸检测线路的横向形变量和纵向形变量。其后，控制单元500可以根据所述拉伸检测线路的形变量对触控线路拉伸后的感应坐标进行修正，具体根据横向形变量和纵向形变量对触控线路拉伸后的感应坐标进行修正。In this embodiment, the amount of resistance change and the amount of deformation have a linear relationship, so the control unit 500 can calculate the amount of deformation of the stretch detection circuit according to the amount of resistance change, specifically according to the amount of change in lateral resistance and The longitudinal resistance change amount is calculated to obtain the transverse deformation and the longitudinal deformation of the stretch detection circuit. Thereafter, the control unit 500 may correct the sensing coordinates of the touch circuit after stretching according to the deformation of the stretch detection circuit, and specifically perform the correction of the sensing coordinates of the touch circuit after stretching according to the horizontal deformation and the longitudinal deformation. Fix.
在本实施例中(请参见图1)，所述第一纵向拉伸检测线路的两端分别设有第一端口和第二端口，所述第二纵向检测线路的两端分别设有第三端口和第四端口，所述横向拉伸检测线路的两端分别共用所述第一端口和第四端口。所述阻值检测单元与所述第一端口、第二端口、第三端口、第四端口电连接。In this embodiment (please refer to Figure 1), both ends of the first longitudinal extension detection circuit are respectively provided with a first port and a second port, and both ends of the second longitudinal detection circuit are respectively provided with a third port. The first port and the fourth port are shared by both ends of the lateral stretch detection circuit respectively. The resistance value detection unit is electrically connected to the first port, the second port, the third port, and the fourth port.
在本实施例中，步骤S120具体包括：In this embodiment, step S120 specifically includes:
在第一时间段所述阻值检测单元通过第一端口输入高电平信号给第一纵向拉伸检测线路；In the first time period, the resistance value detection unit inputs a high-level signal to the first longitudinal stretch detection circuit through the first port;
在第二时间段所述阻值检测单元通过第三端口输入高电平信号给第二纵向拉伸检测线路；In the second time period, the resistance value detection unit inputs a high-level signal to the second longitudinal extension detection circuit through the third port;
在第三时间段所述阻值检测单元通过第一端口输入高电平信号给横向拉伸检测线路；In the third time period, the resistance value detection unit inputs a high-level signal to the lateral stretch detection circuit through the first port;
计算得到第一纵向拉伸检测线路130的拉伸电阻值、第二纵向拉伸检测线路140的拉伸电阻值、横向拉伸检测线路150的拉伸电阻值；其中，所述第一时间段、第二时间段、第三时间段不重叠。The tensile resistance value of the first longitudinal extension detection circuit 130, the extension resistance value of the second longitudinal extension detection circuit 140, and the extension resistance value of the transverse extension detection circuit 150 are calculated by calculation; wherein, the first time period , The second time period and the third time period do not overlap.
另外，在本发明的其他实施例中，步骤S120具体包括：In addition, in other embodiments of the present invention, step S120 specifically includes:
在第一时间段所述阻值检测单元获得第一纵向拉伸检测线路的拉伸电阻值；The resistance value detection unit obtains the tensile resistance value of the first longitudinal tensile detection circuit in the first time period;
在第二时间段所述阻值检测单元获得第二纵向拉伸检测线路的拉伸电阻值；In the second time period, the resistance value detection unit obtains the tensile resistance value of the second longitudinal extension detection circuit;
在第三时间段所述阻值检测单元获得横向拉伸检测线路的拉伸电阻值；其中，所述第一时间段、第二时间段、第三时间段不重叠。In the third time period, the resistance value detection unit obtains the tensile resistance value of the lateral extension detection circuit; wherein the first time period, the second time period, and the third time period do not overlap.
在本实施例中，可拉伸触控传感器的控制方法还包括：在第四时间段所述阻值检测单元400通过第一端口A至第四端口D分别输入接地信号给所述第一纵向拉伸检测线路130、第二纵向拉伸检测线路140和横向拉伸检测线路150，以降低外部信号对触控线路110的影响，提高屏蔽效果。其中，所述第四时间段与所述第一时间段、第二时间段和第三时间段不重叠。In this embodiment, the control method of the stretchable touch sensor further includes: in the fourth time period, the resistance value detection unit 400 inputs ground signals to the first longitudinal direction through the first port A to the fourth port D, respectively. The stretching detection circuit 130, the second longitudinal stretching detection circuit 140 and the lateral stretching detection circuit 150 can reduce the influence of external signals on the touch circuit 110 and improve the shielding effect. Wherein, the fourth time period does not overlap with the first time period, the second time period, and the third time period.
第二实施例Second embodiment
图7是本发明第二实施例的可拉伸触控传感器的部分示意图，图7的示意图与图2的示意图相似，因此相同的元件符号代表相同的元器件，在此不再赘述。本实施例与第一实施例的主要不同点为第一纵向拉伸检测线路、第二纵向拉伸检测线路、横向拉伸检测线路位于基板的同一面，所述触控线路均位于基板的另外一面。FIG. 7 is a partial schematic diagram of the stretchable touch sensor according to the second embodiment of the present invention. The schematic diagram of FIG. 7 is similar to the schematic diagram of FIG. 2. Therefore, the same component symbols represent the same components, which will not be repeated here. The main difference between this embodiment and the first embodiment is that the first longitudinal stretching detection circuit, the second longitudinal stretching detection circuit, and the lateral stretching detection circuit are located on the same surface of the substrate, and the touch circuits are all located on the other side of the substrate. one side.
请参见图7和图8，在本实施例中，第一纵向拉伸检测线路230、第二纵向拉伸检测线路240、横向拉伸检测线路250位于基板120的同一面，在此处为位于基板120的下表面，所述触控线路110均位于基板120的另外一面，在此处为位于基板120的上表面。在本实施例中，所述第一纵向拉伸检测线路230、第二纵向拉伸检测线路240、横向拉伸检测线路250在基板平面上的投影围绕所述触控线路110的边缘设置，也即所述第一纵向拉伸检测线路230、第二纵向拉伸检测线路240、横向拉伸检测线位于基板120下表面的边缘。Referring to Figures 7 and 8, in this embodiment, the first longitudinal stretch detection circuit 230, the second longitudinal stretch detection circuit 240, and the transverse stretch detection circuit 250 are located on the same surface of the substrate 120. On the lower surface of the substrate 120, the touch circuits 110 are all located on the other side of the substrate 120, here on the upper surface of the substrate 120. In this embodiment, the projections of the first longitudinal stretch detection circuit 230, the second longitudinal stretch detection circuit 240, and the transverse stretch detection circuit 250 on the substrate plane are arranged around the edge of the touch circuit 110, and That is, the first longitudinal stretching detection circuit 230, the second longitudinal stretching detection circuit 240, and the lateral stretching detection circuit are located at the edge of the lower surface of the substrate 120.
在本实施例中，所述第一纵向部231、第二纵向部241、第一横向部232、第二横向部242、横向线路251均由导线构成，该导线具有一定的可拉伸性，是由导电性材料(例如银胶、碳浆、液态金属等)通过特定工艺(比如印刷、喷涂、转印等)制成。当所述第一端口A、第二端口B、第三端口C、第四端口D通过阻值检测单元400被施加接地信号时，ABCD构成的回路可以起到屏蔽外部信号的作用，减少外部信号对触控线路110的干扰。In this embodiment, the first longitudinal portion 231, the second longitudinal portion 241, the first transverse portion 232, the second transverse portion 242, and the transverse circuit 251 are all composed of wires, which have certain stretchability. It is made of conductive materials (such as silver glue, carbon paste, liquid metal, etc.) through specific processes (such as printing, spraying, transfer, etc.). When the first port A, the second port B, the third port C, and the fourth port D are applied with a ground signal through the resistance value detection unit 400, the loop formed by ABCD can play a role in shielding external signals and reducing external signals Interference to the touch circuit 110.
第三实施例The third embodiment
图9是本发明第三实施例的可拉伸触控传感器的部分示意图，图9的示意图与图7的示意图相似，因此相同的元件符号代表相同的元器件，在此不再赘述。本实施例与第二实施例的主要不同点为靠近内 侧的第一纵向部、第二纵向部呈块状。FIG. 9 is a partial schematic diagram of a stretchable touch sensor according to a third embodiment of the present invention. The schematic diagram of FIG. 9 is similar to the schematic diagram of FIG. 7. Therefore, the same component symbols represent the same components and will not be repeated here. The main difference between this embodiment and the second embodiment is that the first longitudinal portion and the second longitudinal portion near the inner side are block-shaped.
请参见图9和图10，在本实施例中，两个第一纵向部311中在横向上靠近内侧的第一纵向部331和两个第二纵向部341中在横向上靠近内侧第二纵向部341呈块状，两个第一纵向部311中在横向上靠近外侧的第一纵向部331、两个第二纵向部341中在横向上靠近外侧的第二纵向部341、第一横向部332、第二横向部342、横向线路351呈线型，所述块状的第一纵向部331、块状第二纵向部341至少部分遮盖所述触控线路110，在此处遮盖大部分的触控电极111和触控引线112。当所述第一端口A、第二端口B、第三端口C、第四端口D通过阻值检测单元400被施加接地信号时，ABCD构成的回路可以起到屏蔽外部信号的作用，在本实施例中，由于块状第一纵向部331、块状第二纵向部341相对第二实施例面积要大很多，从而可以很大程度上减少外部信号对触控线路110的干扰。另外，在本发明的其他实施例中，还可以两个第一纵向部中在横向上靠近外侧的第一纵向部、两个第二纵向部中在横向上靠近外侧的第二纵向部呈块状，两个所述第一纵向部、两个所述第二纵向部均遮盖至少部分所述触控线路以屏蔽外部信号对触控线路上信号的干扰。另外，在本发明的其他实施例中，还可以两个第一纵向部中在横向上靠近外侧的第一纵向部、两个第二纵向部中在横向上靠近内侧的第二纵向部为块状，或者两个第一纵向部、两个第二纵向部均为块状等，所述第一纵向部、第二纵向部遮盖至少部分所述触控线路。Referring to FIGS. 9 and 10, in this embodiment, of the two first longitudinal portions 311 that are closer to the inner side in the lateral direction, the first longitudinal portion 331 and the two second longitudinal portions 341 are closer to the inner side in the lateral direction. The portion 341 is in a block shape, the first longitudinal portion 331 of the two first longitudinal portions 311 that is laterally close to the outside, the second longitudinal portion 341 of the two second longitudinal portions 341 that is laterally close to the outside, and the first horizontal portion 332, the second horizontal portion 342, and the horizontal line 351 are linear, and the block-shaped first vertical portion 331 and the block-shaped second vertical portion 341 at least partially cover the touch circuit 110, where most of the Touch electrodes 111 and touch leads 112. When the first port A, the second port B, the third port C, and the fourth port D are applied with a ground signal through the resistance value detection unit 400, the loop formed by ABCD can play a role in shielding external signals. In this embodiment In the example, since the block-shaped first longitudinal portion 331 and the block-shaped second longitudinal portion 341 have a much larger area than the second embodiment, the interference of external signals on the touch circuit 110 can be greatly reduced. In addition, in other embodiments of the present invention, the first longitudinal portion that is closer to the outer side in the lateral direction among the two first longitudinal portions, and the second longitudinal portion that is closer to the outer side in the lateral direction among the two second longitudinal portions may also be blocks. The two first longitudinal portions and the two second longitudinal portions both cover at least part of the touch circuit to shield the interference of external signals on the signal on the touch circuit. In addition, in other embodiments of the present invention, the first longitudinal portion that is closer to the outside in the lateral direction among the two first longitudinal portions, and the second longitudinal portion that is closer to the inner side in the lateral direction among the two second longitudinal portions may also be blocks. Shape, or the two first longitudinal portions and the two second longitudinal portions are block-shaped, etc., and the first longitudinal portion and the second longitudinal portion cover at least part of the touch circuit.
在本实施例中，由于两个第一纵向部331中在横向上靠近外侧的第一纵向部331和两个第二纵向部341中在横向上靠近内侧的第二纵向部341呈块状，从而会导致第一纵向部331和第二纵向部341间距会比较小，从而横向线路351的长度会比较短。In this embodiment, since the first longitudinal portion 331 that is closer to the outside in the lateral direction among the two first longitudinal portions 331 and the second longitudinal portion 341 that is closer to the inner side in the lateral direction among the two second longitudinal portions 341 are block-shaped, As a result, the distance between the first longitudinal portion 331 and the second longitudinal portion 341 will be relatively small, and the length of the horizontal line 351 will be relatively short.
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts between the various embodiments, refer to each other. can. As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。The above-disclosed are only preferred embodiments of the present invention. Of course, the scope of rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (36)

  1. 一种可拉伸触控传感器，其特征在于，包括：A stretchable touch sensor, characterized in that it comprises:
    触控线路；Touch line
    基板，所述基板上设有拉伸检测线路和所述触控线路；A substrate, the substrate is provided with a stretch detection circuit and the touch circuit;
    阻值检测单元，所述阻值检测单元检测拉伸前和拉伸后的拉伸检测线路的初始电阻值和拉伸电阻值；A resistance value detection unit, which detects the initial resistance value and the tension resistance value of the tension detection circuit before and after the tension;
    控制单元，其与所述阻值检测单元电连接，所述控制单元用于根据所述拉伸检测线路的初始电阻值和拉伸电阻值计算得到被拉伸后所述拉伸检测线路的阻值变化量；The control unit is electrically connected to the resistance detection unit, and the control unit is configured to calculate the resistance of the tensile detection circuit after being stretched according to the initial resistance value and the tensile resistance value of the tensile detection circuit Value change
    所述控制单元还用于根据阻值变化量对所述触控线路的信号进行调整。The control unit is further configured to adjust the signal of the touch circuit according to the amount of resistance change.
  2. 如权利要求1所述的可拉伸触控传感器，其特征在于，所述控制单元还用于根据阻值变化量对所述触控线路的信号进行调整具体包括：所述控制单元还用于根据阻值变化量对所述触控线路拉伸后的信号衰减量进行补偿。The stretchable touch sensor according to claim 1, wherein the control unit is further configured to adjust the signal of the touch circuit according to a change in resistance value, specifically comprising: the control unit is also configured to The signal attenuation after the touch circuit is stretched is compensated according to the resistance change.
  3. 如权利要求1所述的可拉伸触控传感器，其特征在于，所述控制单元还用于根据阻值变化量对所述触控线路的信号进行调整具体包括：所述控制单元还用于根据阻值变化量对所述触控线路拉伸后的感应坐标进行修正。The stretchable touch sensor according to claim 1, wherein the control unit is further configured to adjust the signal of the touch circuit according to a change in resistance value, specifically comprising: the control unit is also configured to According to the resistance change amount, the induced coordinates after the touch circuit is stretched are corrected.
  4. 如权利要求2或3所述的可拉伸触控传感器，其特征在于，所述阻值检测单元在不同时段输出不同信号至所述拉伸检测线路。The stretchable touch sensor according to claim 2 or 3, wherein the resistance value detection unit outputs different signals to the stretch detection circuit in different periods.
  5. 如权利要求4所述的可拉伸触控传感器，其特征在于，所述拉伸检测线路在第一总时间段接收高电平信号而输出电流。4. The stretchable touch sensor of claim 4, wherein the stretch detection circuit receives a high-level signal and outputs a current during the first total time period.
  6. 如权利要求5所述的可拉伸触控传感器，其特征在于，所述拉伸检测线路在第二总时间段接地而对触控线路屏蔽外部静电。7. The stretchable touch sensor of claim 5, wherein the stretch detection circuit is grounded during the second total time period to shield the touch circuit from external static electricity.
  7. 如权利要求4所述的可拉伸触控传感器，其特征在于，所述拉伸检测线路靠近所述基板的外轮廓且至少部分包围所述触控线路。8. The stretchable touch sensor of claim 4, wherein the stretch detection circuit is close to the outer contour of the substrate and at least partially surrounds the touch circuit.
  8. 如权利要求7所述的可拉伸触控传感器，其特征在于，所述拉伸检测线路包括横向拉伸检测线路及纵向拉伸检测线路，用于分别检测横向阻值变化及纵向阻值变化。The stretchable touch sensor according to claim 7, wherein the stretch detection circuit comprises a horizontal stretch detection circuit and a longitudinal stretch detection circuit, which are used to detect the change of the lateral resistance and the change of the longitudinal resistance respectively .
  9. 如权利要求8所述的可拉伸触控传感器，其特征在于，所述横向拉伸检测线路与纵向拉伸检测线路至少部分重合。8. The stretchable touch sensor according to claim 8, wherein the lateral stretch detection circuit and the longitudinal stretch detection circuit at least partially overlap.
  10. 如权利要求9所述的可拉伸触控传感器，其特征在于，所述拉伸检测线路包括信号输入端、第一信号输出端及第二信号输出端，所述控制单元在信号输入端输入信号时，根据第一信号输出端的输出 结果确定纵向阻值变化量，根据第二信号输出端的输出结果确定横向阻值变化量。The stretchable touch sensor of claim 9, wherein the stretch detection circuit includes a signal input terminal, a first signal output terminal, and a second signal output terminal, and the control unit inputs at the signal input terminal When signal, the longitudinal resistance change is determined according to the output result of the first signal output terminal, and the lateral resistance change is determined according to the output result of the second signal output terminal.
  11. 如权利要求10所述的可拉伸触控传感器，其特征在于，所述横向拉伸检测线路的长度小于所述纵向拉伸检测线路的长度。10. The stretchable touch sensor of claim 10, wherein the length of the lateral stretch detection circuit is smaller than the length of the longitudinal stretch detection circuit.
  12. 如权利要求8所述的可拉伸触控传感器，其特征在于，所述控制单元还用于根据阻值变化量对所述触控线路的信号进行调整具体包括：The stretchable touch sensor according to claim 8, wherein the control unit is further configured to adjust the signal of the touch circuit according to the change in resistance value specifically comprising:
    所述控制单元根据所述横向阻值变化量和所述纵向阻值变化量计算得到所述拉伸检测线路的横向形变量和纵向形变量；The control unit calculates the lateral deformation amount and the longitudinal deformation amount of the stretch detection line according to the lateral resistance change amount and the longitudinal resistance change amount;
    所述控制单元根据所述横向形变量和纵向形变量对所述触控线路拉伸后的感应坐标进行修正。The control unit corrects the induced coordinates of the stretched touch line according to the lateral deformation amount and the longitudinal deformation amount.
  13. 如权利要求8所述的可拉伸触控传感器，其特征在于，所述纵向拉伸检测线路包括第一纵向拉伸检测线路、第二纵向拉伸检测线路。The stretchable touch sensor according to claim 8, wherein the longitudinal stretch detection circuit comprises a first longitudinal stretch detection circuit and a second longitudinal stretch detection circuit.
  14. 如权利要求13所述的可拉伸触控传感器，其特征在于，所述第一纵向拉伸检测线路的两端分别设有第一端口和第二端口，所述第二纵向检测线路的两端分别设有第三端口和第四端口，所述横向拉伸检测线路的两端分别共用所述第一端口和第四端口。The stretchable touch sensor according to claim 13, wherein both ends of the first longitudinal stretch detection circuit are respectively provided with a first port and a second port, and two of the second longitudinal detection circuit The ends are respectively provided with a third port and a fourth port, and both ends of the lateral stretch detection circuit share the first port and the fourth port respectively.
  15. 如权利要求14所述的可拉伸触控传感器，其特征在于，所述阻值检测单元与所述第一端口、第二端口、第三端口、第四端口电连接。15. The stretchable touch sensor according to claim 14, wherein the resistance value detection unit is electrically connected to the first port, the second port, the third port, and the fourth port.
  16. 如权利要求15所述的可拉伸触控传感器，其特征在于，所述基板同一面的相对两侧上分别设有所述第一纵向拉伸检测线路和所述第二纵向拉伸检测线路，所述第一纵向拉伸检测线路包括第一横向部，所述第二纵向拉伸检测线路包括第二横向部，所述第一横向部和第二横向部经由横向线路电连接，所述横向拉伸检测线路包括所述第一横向部、第二横向部和横向线路。The stretchable touch sensor of claim 15, wherein the first longitudinal stretch detection circuit and the second longitudinal stretch detection circuit are respectively provided on opposite sides of the same surface of the substrate , The first longitudinal stretch detection circuit includes a first transverse portion, the second longitudinal stretch detection circuit includes a second transverse portion, the first transverse portion and the second transverse portion are electrically connected via the transverse circuit, the The transverse stretch detection circuit includes the first transverse part, the second transverse part and the transverse line.
  17. 如权利要求16所述的可拉伸触控传感器，其特征在于，所述第一纵向拉伸检测线路包括两条第一纵向部，两条所述第一纵向部的末端分别与第一横向部的两端电连接，两条所述第一纵向部的首端分别与第一端口、第二端口电连接，所述第二纵向拉伸检测线路包括两条第二纵向部，两条所述第二纵向部的末端分别与第二横向部的两端电连接，两条所述第二纵向部的首端分别与第三端口、第四端口电连接，所述横向拉伸检测线路包括与第一端口电连接的第一纵向部、第一横向部、横向线路、第二横向部、与第四端电连接的第二纵向部。The stretchable touch sensor according to claim 16, wherein the first longitudinal stretch detection circuit comprises two first longitudinal portions, and the ends of the two first longitudinal portions are respectively connected to the first transverse direction. The two ends of the two first longitudinal portions are electrically connected, and the head ends of the two first longitudinal portions are electrically connected to the first port and the second port respectively. The second longitudinal stretch detection circuit includes two second longitudinal portions, The ends of the second longitudinal portion are respectively electrically connected to both ends of the second transverse portion, the head ends of the two second longitudinal portions are respectively electrically connected to the third port and the fourth port, and the transverse stretch detection circuit includes A first longitudinal portion, a first transverse portion, a transverse line, a second transverse portion electrically connected to the first port, and a second longitudinal portion electrically connected to the fourth end.
  18. 如权利要求17所述的可拉伸触控传感器，其特征在于，所述第一纵向拉伸检测线路、第二纵向拉伸检测线路、横向拉伸检测线路和所述触控线路均位于所述基板的同一面上，且所述第一纵向拉伸检测线路、第二纵向拉伸检测线路、横向拉伸检测线路包围所述触控线路设置。The stretchable touch sensor according to claim 17, wherein the first longitudinal stretch detection circuit, the second longitudinal stretch detection circuit, the lateral stretch detection circuit and the touch circuit are all located at all The substrate is on the same surface, and the first longitudinal stretching detection circuit, the second longitudinal stretching detection circuit, and the lateral stretching detection circuit are arranged to surround the touch circuit.
  19. 如权利要求17所述的可拉伸触控传感器，其特征在于，所述第一纵向拉伸检测线路、第二纵 向拉伸检测线路、横向拉伸检测线路位于所述基板的同一面上，所述触控线路位于所述基板的另外一面上。The stretchable touch sensor of claim 17, wherein the first longitudinal stretch detection circuit, the second longitudinal stretch detection circuit, and the transverse stretch detection circuit are located on the same surface of the substrate, The touch circuit is located on the other side of the substrate.
  20. 如权利要求19所述的可拉伸触控传感器，其特征在于，所述第一纵向拉伸检测线路、第二纵向拉伸检测线路、横向拉伸检测线路在所述基板平面上的投影围绕所述触控线路的边缘设置。The stretchable touch sensor of claim 19, wherein the projections of the first longitudinal stretch detection circuit, the second longitudinal stretch detection circuit, and the transverse stretch detection circuit on the substrate plane surround The edge of the touch circuit is arranged.
  21. 如权利要求19所述的可拉伸触控传感器，其特征在于，所述第一纵向部和所述第二纵向部遮盖至少部分所述触控线路以屏蔽外部信号的干扰。The stretchable touch sensor of claim 19, wherein the first longitudinal portion and the second longitudinal portion cover at least part of the touch circuit to shield interference from external signals.
  22. 如权利要求18-21任一项所述的可拉伸触控传感器，其特征在于，所述阻值检测单元根据所述控制单元的控制分时输入高电平信号或接地信号给所述第一端口、第二端口、第三端口、第四端口的任一端口。The stretchable touch sensor according to any one of claims 18-21, wherein the resistance value detection unit inputs a high level signal or a ground signal to the first signal in a time-sharing manner according to the control of the control unit Any one of a port, a second port, a third port, and a fourth port.
  23. 如权利要求22所述的可拉伸触控传感器，其特征在于，所述阻值检测单元分时输入高电平信号给第一纵向拉伸检测线路、第二纵向拉伸检测线路和横向拉伸检测线路。The stretchable touch sensor according to claim 22, wherein the resistance value detection unit inputs a high-level signal to the first longitudinal stretch detection circuit, the second longitudinal stretch detection circuit and the lateral stretch Extend the detection line.
  24. 如权利要求16-21任意一项所述的可拉伸触控传感器，其特征在于，所述第一纵向部、第二纵向部互相平行，所述第一横向部、第二横向部和横向线路位于同一直线上，该直线与纵向部垂直。The stretchable touch sensor according to any one of claims 16-21, wherein the first longitudinal portion and the second longitudinal portion are parallel to each other, and the first lateral portion, the second lateral portion and the lateral The lines are on the same straight line, which is perpendicular to the longitudinal section.
  25. 如权利要求16-21任意一项所述的可拉伸触控传感器，其特征在于，所述第一纵向部长度与第一横向部长度的比值大于或等于10，所述第二纵向部长度与第二横向部长度的比值大于或等于10。The stretchable touch sensor according to any one of claims 16-21, wherein the ratio of the length of the first longitudinal portion to the length of the first transverse portion is greater than or equal to 10, and the length of the second longitudinal portion The ratio to the length of the second transverse portion is greater than or equal to 10.
  26. 一种可拉伸触控传感器的控制方法，其特征在于，所述可拉伸触摸传感器包括触控线路、基板、拉伸检测线路、阻值检测单元以及控制单元；A method for controlling a stretchable touch sensor, wherein the stretchable touch sensor includes a touch circuit, a substrate, a stretch detection circuit, a resistance detection unit, and a control unit;
    所述可拉伸触控传感器的控制方法包括：The control method of the stretchable touch sensor includes:
    在可拉伸传感器非拉伸状态时检测所述拉伸检测线路的初始电阻值；Detecting the initial resistance value of the stretch detection circuit when the stretchable sensor is not stretched;
    在可拉伸传感器拉伸状态时检测所述拉伸检测线路的拉伸电阻值；Detecting the stretch resistance value of the stretch detection circuit when the stretchable sensor is stretched;
    根据所述初始电阻值、拉伸电阻值计算得到被拉伸后的拉伸检测线路的阻值变化量；Calculating the resistance value change of the stretch detection circuit after being stretched according to the initial resistance value and the stretch resistance value;
    根据阻值变化量对所述触控线路的信号进行调整。The signal of the touch circuit is adjusted according to the amount of resistance change.
  27. 如权利要求26所述的可拉伸触控传感器的控制方法，其特征在于，步骤根据阻值变化量对所述触控线路的信号进行调整具体包括：The control method of a stretchable touch sensor according to claim 26, wherein the step of adjusting the signal of the touch circuit according to the change in resistance value specifically comprises:
    根据阻值变化量对所述触控线路拉伸后的信号衰减量进行补偿。The signal attenuation after the touch circuit is stretched is compensated according to the resistance change.
  28. 如权利要求26所述的可拉伸触控传感器的控制方法，其特征在于，步骤根据阻值变化量对所述触控线路的信号进行调整具体包括：The control method of a stretchable touch sensor according to claim 26, wherein the step of adjusting the signal of the touch circuit according to the change in resistance value specifically comprises:
    根据阻值变化量对所述触控线路拉伸后的感应坐标进行修正。According to the resistance change amount, the induced coordinates after the touch circuit is stretched are corrected.
  29. 如权利要求28所述的可拉伸触控传感器的控制方法，其特征在于，步骤“根据阻值变化量对 所述触控线路拉伸后的感应坐标进行修正”具体包括：The control method of a stretchable touch sensor according to claim 28, wherein the step of "correcting the sensing coordinates of the stretched touch circuit according to the resistance value change" specifically comprises:
    根据所述阻值变化量计算得到所述拉伸检测线路的形变量；Calculating the amount of deformation of the stretch detection circuit according to the amount of change in resistance;
    根据所述形变量对所述触控线路拉伸后的感应坐标进行修正。Correcting the sensing coordinates of the stretched touch circuit according to the deformation amount.
  30. 如权利要求26所述的可拉伸触控传感器的控制方法，其特征在于，所述拉伸检测线路包括第一纵向拉伸检测线路、第二纵向拉伸检测线路和横向拉伸检测线路。The control method of a stretchable touch sensor according to claim 26, wherein the stretch detection circuit comprises a first longitudinal stretch detection circuit, a second longitudinal stretch detection circuit, and a lateral stretch detection circuit.
  31. 如权利要求30所述的可拉伸触控传感器的控制方法，其特征在于，所述第一纵向拉伸检测线路的两端分别设有第一端口和第二端口，所述第二纵向检测线路的两端分别设有第三端口和第四端口，所述横向拉伸检测线路的两端分别共用所述第一端口和第四端口。The control method of a stretchable touch sensor according to claim 30, wherein both ends of the first longitudinal stretch detection circuit are respectively provided with a first port and a second port, and the second longitudinal detection circuit The two ends of the line are respectively provided with a third port and a fourth port, and the two ends of the transverse stretch detection line respectively share the first port and the fourth port.
  32. 如权利要求31所述的可拉伸触控传感器的控制方法，其特征在于，所述阻值检测单元与所述第一端口、第二端口、第三端口、第四端口电连接。The control method of a stretchable touch sensor according to claim 31, wherein the resistance value detection unit is electrically connected to the first port, the second port, the third port, and the fourth port.
  33. 如权利要求32所述的可拉伸触控传感器的控制方法，其特征在于，所述在可拉伸传感器拉伸状态时检测所述拉伸检测线路的拉伸电阻值步骤具体包括：The control method of a stretchable touch sensor according to claim 32, wherein the step of detecting the stretch resistance value of the stretch detection circuit when the stretchable sensor is stretched specifically comprises:
    在第一时间段所述阻值检测单元通过第一端口输入高电平信号给第一纵向拉伸检测线路；In the first time period, the resistance value detection unit inputs a high-level signal to the first longitudinal stretch detection circuit through the first port;
    在第二时间段所述阻值检测单元通过第三端口输入高电平信号给第二纵向拉伸检测线路；In the second time period, the resistance value detection unit inputs a high-level signal to the second longitudinal extension detection circuit through the third port;
    在第三时间段所述阻值检测单元通过第一端口输入高电平信号给横向拉伸检测线路；In the third time period, the resistance value detection unit inputs a high-level signal to the lateral stretch detection circuit through the first port;
    计算得到第一纵向拉伸检测线路的拉伸电阻值、第二纵向拉伸检测线路的拉伸电阻值、横向拉伸检测线路的拉伸电阻值；其中，所述第一时间段、第二时间段、第三时间段不重叠。The tensile resistance value of the first longitudinal extension detection circuit, the extension resistance value of the second longitudinal extension detection circuit, and the extension resistance value of the transverse extension detection circuit are calculated by calculation; wherein, the first time period, the second The time period and the third time period do not overlap.
  34. 如权利要求32所述的可拉伸触控传感器的控制方法，其特征在于，所述在可拉伸传感器拉伸状态时检测所述拉伸检测线路的拉伸电阻值步骤具体包括：The control method of a stretchable touch sensor according to claim 32, wherein the step of detecting the stretch resistance value of the stretch detection circuit when the stretchable sensor is stretched specifically comprises:
    在第一时间段所述阻值检测单元获得第一纵向拉伸检测线路的拉伸电阻值；The resistance value detection unit obtains the tensile resistance value of the first longitudinal tensile detection circuit in the first time period;
    在第二时间段所述阻值检测单元获得第二纵向拉伸检测线路的拉伸电阻值；In the second time period, the resistance value detection unit obtains the tensile resistance value of the second longitudinal extension detection circuit;
    在第三时间段所述阻值检测单元获得横向拉伸检测线路的拉伸电阻值；其中，所述第一时间段、第二时间段、第三时间段不重叠。In the third time period, the resistance value detection unit obtains the tensile resistance value of the lateral extension detection circuit; wherein the first time period, the second time period, and the third time period do not overlap.
  35. 如权利要求33或34所述的可拉伸触控传感器的控制方法，其特征在于，所述可拉伸触控传感器的控制方法还包括：The control method of the stretchable touch sensor according to claim 33 or 34, wherein the control method of the stretchable touch sensor further comprises:
    在第四时间段所述阻值检测单元通过第一至第四端口输入接地信号给所述第一纵向拉伸检测线路、第二纵向拉伸检测线路和横向拉伸检测线路，其中，所述第四时间段与所述第一时间段、第二时间段和第三时间段不重叠。In the fourth time period, the resistance value detection unit inputs ground signals to the first longitudinal extension detection circuit, the second longitudinal extension detection circuit, and the lateral extension detection circuit through the first to fourth ports, wherein the The fourth time period does not overlap with the first time period, the second time period, and the third time period.
  36. 如权利要求35所述的可拉伸触控传感器的控制方法，其特征在于，所述控制单元发送使能信 号给所述阻值检测单元，所述使能信号在第一总时间段为高电平，所述使能信号在第二总时间段为低电平，所述第一总时间段包括所述第一时间段、第二时间段和第三时间段，所述第二总时间段包括所述第四时间段。The control method of a stretchable touch sensor according to claim 35, wherein the control unit sends an enable signal to the resistance detection unit, and the enable signal is high during the first total time period. Level, the enable signal is at a low level during the second total time period, the first total time period includes the first time period, the second time period, and the third time period, the second total time The period includes the fourth time period.
PCT/CN2019/076317 2019-02-27 2019-02-27 Stretchable touch sensor and control method thereof WO2020172817A1 (en)

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