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WO2016068016A1 - Dispositif d'acquisition de données d'évaluation de panneau tactile - Google Patents

Dispositif d'acquisition de données d'évaluation de panneau tactile Download PDF

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Publication number
WO2016068016A1
WO2016068016A1 PCT/JP2015/079842 JP2015079842W WO2016068016A1 WO 2016068016 A1 WO2016068016 A1 WO 2016068016A1 JP 2015079842 W JP2015079842 W JP 2015079842W WO 2016068016 A1 WO2016068016 A1 WO 2016068016A1
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WIPO (PCT)
Prior art keywords
touch panel
touch
state
evaluation data
signal value
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Ceased
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PCT/JP2015/079842
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English (en)
Japanese (ja)
Inventor
収 西田
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Sharp Corp
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Sharp Corp
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes

Definitions

  • the present invention relates to a technique for evaluating the performance of a touch panel.
  • Patent Document 1 Japanese Patent Laid-Open No. 2013-84166 discloses a technique for suppressing variations in parasitic capacitance for each detection wiring in a touch panel including a plurality of detection wirings.
  • the touch screen of the touch panel of Patent Document 1 includes a plurality of detection column wirings and a plurality of detection row wirings that intersect the detection column wirings.
  • dummy column wirings having the same configuration as that of the detection column wiring are arranged on the outer side of the outermost wiring among the plurality of detection column wirings.
  • dummy row wirings having the same configuration as the detection row wirings are arranged on the outer side of the outermost wiring among the plurality of detection row wirings.
  • the outermost detection column wiring and the other detection column wiring are placed in the same environment, and the parasitic capacitance of the detection column wiring is made uniform. Is done. Further, in the touch screen of the touch panel of Patent Document 1, the outermost detection row wiring and the other detection row wiring are placed in an equivalent environment, and the parasitic capacitance of the detection row wiring is made uniform.
  • the technique of Patent Document 1 is a technique that is applied to a touch panel having a normal pattern, and is difficult to apply to a touch panel having a special pattern and large variations in capacitance on the touch panel surface. That is, the technique of Patent Document 1 is a touch panel having two or more layers on which electrodes are formed, and can be applied to a touch panel with relatively small variations in capacitance on the touch panel surface. For example, it is difficult to apply the technique of Patent Document 1 to a touch panel having a large variation in capacitance on a touch panel surface such as a touch panel having a structure in which one electrode is formed.
  • an object of the present invention is to realize a touch panel evaluation data acquisition device that can appropriately acquire in-plane variation data in a one-layer touch panel without requiring a complicated operation. .
  • the first configuration transmits a drive signal for driving the drive electrode of the touch panel and the touch electrode including the drive electrode and the sense electrode, and responds to a change in capacitance from the sense electrode.
  • Touch panel drive device that receives a sense signal and a touch object having a predetermined capacitance, and touch the touch object to N (N: natural number) dot points provided on the touch panel surface of the touch panel.
  • the touch panel evaluation data acquisition device is used together with the hit point processing device to acquire the distribution data of the capacitance within the touch panel surface of the touch panel.
  • the touch panel evaluation data acquisition device includes an overall control unit and an analysis unit.
  • the overall control unit controls the dot processing device and the touch panel drive device.
  • the analysis unit acquires a plurality of capacity data that is data based on the sense signal received by the touch panel drive device, acquires the maximum value of the acquired plurality of capacity data as a maximum signal value in the capacity map, and the touch object is While the k-th (k: natural number, k ⁇ N) tapping point is being touched, a plurality of acquired maximum signal values in the capacity map are acquired, and an average value of the acquired maximum signal values in the plurality of capacity maps is obtained.
  • touch panel evaluation data which is electrostatic capacity distribution data in the touch panel surface of the touch panel, is acquired.
  • FIG. 1 is a schematic configuration diagram of a touch panel evaluation data acquisition system 1000.
  • FIG. 1 is a schematic configuration diagram of a touch panel evaluation data acquisition system 1000.
  • FIG. The enlarged view of area
  • FIG. The schematic block diagram which looked at the dot processing apparatus 2 and the touch panel TP from the side.
  • the figure (upper figure) showing the relationship between the position of the touch object 21 of the hit point processing device 2 (height in the vertical direction of the touch object 21 (the normal direction of the touch panel TP touch panel surface)) and time, and the hit point H
  • the flowchart of the process which acquires the average signal value Sig (m, n) of the hit point H (m, n) in the touch panel evaluation data acquisition system of the 2nd modification of 1st Embodiment The figure (upper figure) showing the relationship between the position of the touch object 21 of the hit point processing device 2 (height in the vertical direction of the touch object 21 (the normal direction of the touch panel TP touch panel surface)) and time, and the hit point H The figure which shows the relationship between the maximum signal value in a capacity
  • the figure (upper figure) showing the relationship between the position of the touch object 21 of the hit point processing device 2 (height in the vertical direction of the touch object 21 (the normal direction of the touch panel TP touch panel surface)) and time, and the hit point H
  • the figure which shows the relationship between the maximum signal value in a capacity
  • FIG. 1 is a schematic configuration diagram of a touch panel evaluation data acquisition system 1000.
  • a total of 100 dot points of 10 ⁇ 10 are indicated by white circles on the touch panel surface of the touch panel TP.
  • FIG. 2 is a schematic configuration diagram of the touch panel evaluation data acquisition system 1000.
  • a total of 400 nodes of 20 ⁇ 20 points between drive electrodes and sense electrodes (proximity points, for example) located in close proximity) are indicated by black circles. Yes.
  • FIG. 3 is an enlarged view of the area AR1 shown in FIGS.
  • FIG. 3 four drive lines G1 connected to the drive electrodes Tx11 to Tx14, four drive lines G2 connected to the drive electrodes Tx21 to Tx24, and drive electrodes Tx31 to Tx34, respectively.
  • Four drive lines G3 connected to each other and four drive lines G4 connected to each of the drive electrodes Tx41 to Tx44 are shown.
  • FIG. 3 four sense lines S1 connected to the sense electrodes Rx11 to Rx14, four sense lines S2 connected to the sense electrodes Rx21 to Rx24, and the sense electrodes Rx31 to Rx34, respectively.
  • Four sense lines S3 connected to each of the four sense lines and four sense lines S4 connected to each of the sense electrodes Rx41 to Rx44 are shown.
  • the dot points H (1,1), H (1,2), H (2,1), and H (2,2) are indicated by white circles as in FIG.
  • nodes (for example, intermediate points between the drive electrode and the sense electrode) P11 to P14, P21 to P24, P31 to P34, and P41 to P44 are indicated by black circles as in FIG.
  • FIG. 4 is a schematic configuration diagram of the dot processing device 2 and the touch panel TP as viewed from the side.
  • the touch panel evaluation data acquisition system 1000 is a system for acquiring touch panel evaluation data of the touch panel TP.
  • the touch panel evaluation data acquisition system 1000 includes a touch panel evaluation data acquisition device 1, a dot processing device 2, and a touch panel drive device 3.
  • the touch panel evaluation data acquisition device 1 includes an overall control unit 11 and an analysis unit 12.
  • the overall control unit 11 has a touch pen (stylus) or an object having a capacitance equivalent to that of a finger (touch object) at a predetermined position on the touch panel surface of the touch panel TP with respect to the dot processing device 2 at a predetermined timing. 21) is controlled to be touched.
  • the overall control unit 11 controls the touch panel drive device 3 to drive the touch panel TP.
  • the overall control unit 11 controls the analysis unit 12 to acquire touch panel evaluation data.
  • the analysis unit 12 inputs a signal (data) from the touch panel driving device 3.
  • the analysis unit 12 acquires touch panel evaluation data Dout for the touch panel TP from a signal (data) from the touch panel drive device 3 based on a command from the overall control unit 11.
  • the hit point processing device 2 has a touch pen (stylus) or an object having a capacitance equivalent to that of a finger (for example, an object with a sharp tip) (touch object 21).
  • the hit point processing device 2 causes the touch object 21 to touch a predetermined position on the touch panel TP at a predetermined timing based on a command from the touch panel evaluation data acquisition device 1.
  • the hit point processing device 2 causes the touch object 21 to touch a hit point point on the touch panel TP (for example, a position indicated by a white circle in FIGS. 1 and 3) at a predetermined timing.
  • the hit point processing device 2 lowers the touch object 21 from the position PosH in the vertical direction (the normal direction of the touch panel surface of the touch panel TP) to the position PosL, so that a predetermined position on the touch panel TP is obtained. Then, the touch object 21 is touched.
  • the touch panel drive device 3 transmits a drive drive signal for generating a predetermined electric field to the drive electrode of the touch panel TP to the touch panel TP.
  • the touch panel driving device 3 receives a sense signal (a sense signal indicating a change in capacitance (electric field change)) from a sense electrode of the touch panel TP. Then, the touch panel drive device outputs the received sense signal or data generated based on the sense signal to the analysis unit 12 of the touch panel evaluation data acquisition device 1.
  • the touch panel TP is a one-layer touch panel, and is formed by mixing electrodes and wiring in one layer.
  • the touch panel TP has a total of 400 nodes of 20 ⁇ 20 (points between drive electrodes and sense electrodes arranged in proximity (for example, intermediate points)).
  • the drive electrode Txmn and the sense electrode Rxmn are arranged to face each other in the area AR1.
  • Each drive electrode is connected to a drive line, and each sense electrode is connected to a sense line.
  • Each drive electrode is connected to a drive drive unit of the touch panel drive device 3 via a drive line.
  • Each sense electrode is connected to a receiving unit (sense signal receiving unit) of the touch panel drive device 3 via a sense line.
  • an intermediate point between the drive electrode Txmn and the sense electrode Rxmn is defined as a point Pmn (node Pmn).
  • the arrangement (pattern) of drive electrodes, sense electrodes, drive lines, and sense lines shown in FIG. 3 is an example, and is not limited to the arrangement (pattern) shown in FIG.
  • the dot processing device 2 sequentially touches the center points of white circles shown in FIG. 1 (total of 10 ⁇ 10 points), and the touch panel evaluation data acquisition device 1 detects the touch panel evaluation data.
  • the case of acquiring the will be described.
  • points that are sequentially touched by the dot processing device 2 are referred to as “dot points”, and the dot points in the nth row and mth column in FIG. 1 are referred to as “dot points H (n, m)”.
  • FIG. 5 is a diagram (upper diagram) showing the relationship between the position of the touch object 21 (the height in the vertical direction of the touch object 21 (the normal direction of the touch panel TP touch panel surface)) and time of the hit point processing apparatus 2.
  • FIG. 5 is a diagram showing the relationship between the maximum signal value in the capacity map and time when the hit point processing device 2 touches the hit point H (1,1) and H (1,2) with the touch point processing device 2 (lower figure). ).
  • the hit point processing device 2 performs control so that the position of the touch object 21 (the position of the tip of the touch object 21) approaches the hit point H (1, 1) of the touch panel TP in accordance with a command from the overall control unit 11.
  • the default position of the position of the touch object 21 is a position where the distance from the touch panel surface of the touch panel TP is Dh, as shown in FIG. PosH.
  • the hit point processing device 2 brings the touch object 21 closer to the hit point H (1, 1) at a constant descent speed during a period from time t0 to t11 (for example, 1.5 seconds).
  • the hit point processing device 2 performs the touch operation for a period of time t11 to t12 (eg, 3 seconds).
  • the position of the touch object 21 is controlled so that the state in which the tip of the object 21 is touched by the hit point H (1, 1) is maintained.
  • the hitting point processing device 2 moves the touch object 21 at a constant speed while the tip position of the touch object 21 is in plan view at time t20.
  • the touch object 21 is also moved in the horizontal direction so as to coincide with the position of the next hit point H (1,2).
  • the period from time t0 to t11, time t12 to t20, time t20 to t21, time t22 to t30 is 1.5 seconds
  • the period from time t11 to t12, time t21 to t22 is The following description will be made assuming that the time is 3 seconds.
  • the touch panel drive device 3 outputs the signal values of the sense signals for 400 nodes, which are all nodes on the touch panel TP, to the analysis unit 12 of the touch panel evaluation data acquisition device 1 in 0.1 seconds.
  • the analysis unit 12 acquires a signal value (signal value based on the sense signal) for each of the 400 nodes.
  • the signal value for each node acquired by the analysis unit 12 is such that the signal value at the time of touch is larger than the signal value at the time of non-touch.
  • the analysis unit 12 holds signal values (400 signal values) for all nodes (400 nodes) on the touch panel TP as data associated with the coordinates of the nodes (positions on the touch panel surface), respectively. To do. Such data is hereinafter referred to as “capacity map”.
  • the analysis unit 12 detects the node having the maximum signal value in one capacity map, and acquires the signal value of the detected node as “the maximum signal value in the capacity map”.
  • the lower diagram of FIG. 5 is a plot of the maximum signal value in the capacity map.
  • the analysis unit 12 acquires 15 capacity maps. Then, the analysis unit 12 acquires the maximum signal value in the capacity map in each capacity map. That is, the analysis unit 12 acquires the 15 maximum signal values in the capacity map in the period from time t0 to t11. Then, the curves at the times t0 to t11 in the lower diagram of FIG. 5 are plotted and connected by curves in accordance with the times when the maximum signal values in the 15 capacity maps are acquired.
  • the analysis unit 12 acquires 30 capacity maps. Then, the analysis unit 12 acquires the maximum signal value in the capacity map in each capacity map. That is, the analysis unit 12 acquires 30 maximum signal values in the capacity map in the period from time t11 to t12. Then, the curves at the times t11 to t12 in the lower diagram of FIG. 5 are plotted and connected by curves according to the time when the maximum signal values in the 30 capacity maps are acquired.
  • the maximum signal value in the capacity map is a small value.
  • the maximum signal value in the capacity map is a large value.
  • the hit point (1, 1) is in a state where the touch object 21 is touching, Rx11, Rx12, There is a high possibility that the signal value of the sense signal received from one of the sense electrodes Rx21 and Rx22 will be the maximum value.
  • the analysis unit 12 determines whether or not the touch state is set based on a predetermined threshold Th. Specifically, when the maximum signal value in the capacity map is larger than a predetermined threshold Th, the analysis unit 12 determines that the touch state is set. In the case of FIG. 5, since the maximum signal value in the capacity map is larger than the threshold value Th from time t11 to t12, the analysis unit 12 determines that the touch state is in the period from time t11 to t12. In other words, the analysis unit 12 determines that the touching point 21 is touching the hit point H (1, 1) during the period of time t11 to t12.
  • the analysis unit 12 calculates the average value of the maximum signal values in the capacity map of 30 (for 3 seconds) acquired during the period from time t11 to t12, and the calculated average value is used as the hit point H (1 , 1) is obtained as the average signal value Sig (1, 1).
  • the overall control unit 11 of the touch panel evaluation data acquisition device 1 causes the hit point processing device 2 to start an operation of touching the touch object 21 at the hit point H (1, 2). Send a command.
  • the hit point processing device 2 controls the position of the touch object 21 (the position of the tip of the touch object 21) to approach the hit point H (1, 2) of the touch panel TP in accordance with a command from the overall control unit 11.
  • the hit point processing device 2 brings the touch object 21 closer to the hit point H (1, 2) at a constant descent speed during a period from time t20 to t21 (a period of 1.5 seconds).
  • the hit point processing device 2 performs the touch operation for a period of time t21 to t22 (a period of 3 seconds).
  • the position of the touch object 21 is controlled so that the state where the tip of the object 21 is touched by the hit point H (1,2) is maintained.
  • the striking point processing device 2 raises the touch object 21 at a constant speed, while the tip position of the touch object 21 is in plan view at time t30.
  • the touch object 21 is also moved in the horizontal direction so as to coincide with the position of the next hit point H (1,3).
  • the touch panel drive device 3 outputs signal values of sense signals for 400 nodes, which are all nodes on the touch panel TP, to the analysis unit 12 of the touch panel evaluation data acquisition device 1 in 0.1 seconds. And the analysis part 12 acquires the signal value (signal value based on a sense signal) about each node of 400 nodes based on the signal value of the sense signal input from the touch panel drive device 3.
  • the analysis unit 12 holds signal values (400 signal values) for all nodes (400 nodes) on the touch panel TP as data associated with the coordinates of the nodes (positions on the touch panel surface), respectively. To do. That is, the analysis unit 12 acquires a capacity map.
  • the analysis unit 12 detects the node having the maximum signal value in one capacity map, and acquires the detected signal value of the node as the maximum signal value in the capacity map.
  • the maximum signal value in the capacity map is a small value.
  • the maximum signal value in the capacity map is a large value.
  • the hit point (1,2) is in a state where the touch object 21 is touching, so that Rx31, Rx32, There is a high possibility that the signal value of the sense signal received from one of the sense electrodes Rx41 and Rx42 will be the maximum value.
  • the analysis unit 12 determines whether or not the touch state is set based on a predetermined threshold Th. Specifically, when the maximum signal value in the capacity map is larger than a predetermined threshold Th, the analysis unit 12 determines that the touch state is set. In the case of FIG. 5, since the maximum signal value in the capacity map is larger than the threshold value Th from time t21 to t22, the analysis unit 12 determines that the touch state is in the period from time t21 to t22. That is, the analysis unit 12 determines that the touching point 21 is touching the hit point H (1,2) during the period from time t21 to t22.
  • the analysis unit 12 calculates the average value of the maximum signal values in the capacity map of 30 (for 3 seconds) acquired during the period from time t21 to t22, and calculates the calculated average value as the hit point H (1 , 2) is obtained as the average signal value Sig (1, 2).
  • the touch panel evaluation data acquisition device 1 acquires the average signal value Sig (m, n) of the hit point H (m, n). That is, by the above process, the touch panel evaluation data acquisition apparatus 1 acquires the average signal value Sig (m, n) of each of the 100 hit points.
  • the touch panel evaluation data acquisition device 1 associates the average signal value Sig (m, n) of the 100 hit points acquired in this way with the coordinates (positions on the touch panel surface) of the hit points. Output as touch panel evaluation data Dout.
  • FIG. 6 shows an example of the touch panel evaluation data Dout.
  • the average signal value of the dot points included in the area AR2 indicates a large value
  • the average signal value of the dot points included in the area AR3 indicates a small value
  • the others The average signal value of the dot points in this area is almost constant.
  • the touch panel evaluation data acquisition apparatus 1 does not require complicated work on the touch panel evaluation data that is in-plane variation data (capacitance data distribution on the touch panel surface). Can be acquired appropriately.
  • the touch panel evaluation data acquisition system of the first modification has the same configuration as the touch panel evaluation data acquisition system 1000.
  • FIG. 7 is a flowchart of processing for acquiring the average signal value Sig (m, n) of the hit point H (m, n) in the touch panel evaluation data acquisition system of the present modification.
  • step S3 when the analysis unit 12 can read the data of one capacity map, the process proceeds to step S4. On the other hand, if the analysis unit 12 cannot read the data of one capacity map, the analysis unit 12 ends the process.
  • Step S4 the analysis unit 12 acquires the maximum signal value Sig_max in the capacity map from the read capacity map.
  • step S5 when the analysis unit 12 determines that the acquired maximum signal value Sig_max in the capacity map is equal to or greater than the threshold Th, the internal state is set to the “non-touch state” (step S6). On the other hand, if the analysis unit 12 determines that the acquired maximum signal value Sig_max in the capacity map is not equal to or greater than the threshold value Th, the process proceeds to step S7.
  • Step S7 to S8 In step S ⁇ b> 7, the analysis unit 12 determines whether or not the internal state is the “non-touch state”. When the internal state is “non-touch state”, the analysis unit 12 sets the internal state to “pre-touch state”. On the other hand, when the internal state is not the “non-touch state”, the analysis unit 12 advances the process to step S9.
  • Step S9 to S12 In step S ⁇ b> 9, the analysis unit 12 determines whether or not the internal state is the “pre-touch state”. If the internal state is the “pre-touch state”, the analysis unit 12 advances the process to step S10. If the internal state is not the “pre-touch state”, the analysis unit 12 advances the process to step S12.
  • step S10 the analysis unit 12 determines whether or not the count value N1 of the number of detection times of the pre-touch state is larger than the threshold value N1_th.
  • the analysis unit 12 advances the process to step S11.
  • the analysis unit 12 sets the internal state to “touch state”.
  • step S11 the analysis unit 12 performs a process of incrementing the count value N1 by +1, and returns the process to step S2.
  • Step S13 In step S13, the analysis unit 12 determines whether or not the internal state is “touch state”. When the internal state is “touch state”, the process proceeds to step S14, and the internal state is “touch state”. If not, the process returns to step S2.
  • Step S ⁇ b> 14 the analysis unit 12 compares the count value N ⁇ b> 2 of the number of touch state detections with the threshold value N ⁇ b> 2 ⁇ / b> _th for N ⁇ b> 2. When the count value N2 of the touch state detection count is equal to or greater than N2_th, the analysis unit 12 advances the process to step S15. When the count value N2 of the touch state detection count is not equal to or greater than N2_th, the analysis unit 12 Advances to step S16.
  • step S17 The analysis part 12 advances a process to step S17.
  • Step S17 In step S17, the analysis unit 12 sets the internal state to “post-touch state” and returns the process to step S2.
  • the processing is executed by the touch panel evaluation data acquisition system of this modification, so that erroneous data acquisition is appropriately prevented. That is, in the touch panel evaluation data acquisition system of this modification, instead of suddenly changing from the “non-touch state” to the “touch state”, when the “pre-touch state” continues for a certain period of time, the transition to the “touch state” It is possible to appropriately prevent erroneous data from being erroneously recognized as being “touched” due to noise or the like.
  • the touch panel evaluation data acquisition system of the second modification has the same configuration as the touch panel evaluation data acquisition system 1000.
  • FIG. 8 is a flowchart of processing for acquiring the average signal value Sig (m, n) of the hit point H (m, n) in the touch panel evaluation data acquisition system of the present modification.
  • step S ⁇ b> 101 is added between step S ⁇ b> 1 and step S ⁇ b> 2 is executed in the processing flow of the touch panel evaluation data acquisition system of the first modification. Is done. Except for this point, the process of the touch panel evaluation data acquisition system of the present modification is the same as the touch panel evaluation data acquisition system of the first modification.
  • step S101 the analysis unit 12 sets the maximum value among the maximum signal values in the capacity map of the first K capacity maps to the threshold Th. This process will be described with reference to FIG.
  • FIG. 9 is a diagram clearly showing the point of taking the maximum value among the maximum signal values in the capacity map of the first K capacity maps in FIG.
  • the analysis unit 12 performs processing of the hit point H (1, 1).
  • the value Th11 of the point Po1 is set to the threshold value Th.
  • the analysis unit 12 performs the process of the hit point H (1, 2).
  • the value Th12 of the point Po2 is set to the threshold value Th.
  • the analysis unit 12 can set a good threshold Th by the above processing.
  • the maximum value among the maximum signal values in the capacity map corresponding to the time until the touch object 21 contacts the touch panel TP is set as the threshold value. Since it is set to Th, it is possible to save the trouble of setting the threshold Th.
  • the touch panel evaluation data acquisition system of the third modification has the same configuration as the touch panel evaluation data acquisition system 1000.
  • the analysis unit 12 uses a threshold value for determining whether or not the touched state has been shifted, and a threshold value for determining whether or not the touched state has transitioned to the non-touched state. And are automatically set. This will be described with reference to FIG.
  • FIG. 10 is a diagram similar to FIG. 5, and shows the position of the touch object 21 (the height in the vertical direction of the touch object 21 (the normal direction of the touch panel TP touch panel surface)) and time of the hit point processing apparatus 2.
  • a diagram showing the relationship (upper diagram) and the hit point H (1,1), H (1,2) are the maximum signal value in the capacity map when the touch object 21 is touched by the hit point processing device 2. It is a figure (lower figure) which shows the relationship with time.
  • the average level of the maximum signal value varies greatly.
  • the average level of the maximum signal value in the capacity map differs greatly.
  • the analysis unit 12 has a threshold value for determining whether or not the touch state has been changed, and a threshold value for determining whether or not the touch state has been changed to the non-touch state. , Is set automatically.
  • the analysis unit 12 is in the non-touch state at time t13. It is determined that it has moved to.
  • the analysis unit 12 shifts to the touch state at time t21. Is determined.
  • the touch state and the non-touch state are determined based on the average signal value Sig (m, n).
  • Thresholds TH_d and Th_u are set. Therefore, for example, as shown in FIG. 10, even when the signal level in the touch state of the maximum signal value in the capacity map or the signal level in the non-touch state of the maximum signal value in the capacity map varies greatly, In addition, a touch state and a non-touch state can be determined. That is, in the touch panel evaluation data acquisition system of the present modification, the touch panel evaluation data is acquired in a state where the touch state and the non-touch state are properly grasped, so that touch panel evaluation data with higher accuracy can be acquired.
  • the arrangement and number of hit points are not limited to the above embodiment (including modifications). Further, the number of drive electrodes, the number of sense electrodes, the shape, the arrangement, and the like of the touch panel TP are not limited to the above-described embodiment (including modifications).
  • part or all of the touch panel evaluation data acquisition system and part or all of the touch panel evaluation data acquisition apparatus 1 of the above embodiment may be realized as an integrated circuit (for example, LSI, system LSI, etc.). Good.
  • Part or all of the processing of each functional block in the above embodiment may be realized by a program. And a part or all of the processing of each functional block of the above embodiment may be executed by a central processing unit (CPU) in the computer.
  • a program for performing each processing is stored in a storage device such as a hard disk or ROM, and a central processing unit (CPU) reads the program from the ROM or RAM and executes it. Also good.
  • each process of the above embodiment may be realized by hardware, or may be realized by software (including a case where it is realized together with an OS (operating system), middleware, or a predetermined library). Further, it may be realized by mixed processing of software and hardware. Further, it may be realized by mixed processing of software and hardware.
  • execution order of the processing methods in the above embodiment is not necessarily limited to the description of the above embodiment, and the execution order can be changed without departing from the gist of the invention.
  • a computer program that causes a computer to execute the above-described method and a computer-readable recording medium that records the program are included in the scope of the present invention.
  • the computer-readable recording medium include a flexible disk, a hard disk, a CD-ROM, an MO, a DVD, a large-capacity DVD, a next-generation DVD, and a semiconductor memory.
  • the computer program is not limited to the one recorded on the recording medium, but may be transmitted via a telecommunication line, a wireless or wired communication line, a network represented by the Internet, or the like.
  • the dimension of each member has a part which does not represent an actual dimension, a dimension ratio, etc. faithfully.
  • the first invention is a touch panel drive including a drive electrode and a sense electrode, and a touch panel drive that transmits a drive signal for driving the drive electrode of the touch panel and receives a sense signal corresponding to a change in capacitance from the sense electrode.
  • a touch panel drive Used together with an apparatus and a dot processing apparatus that has a touch object having a predetermined capacitance and touches the touch object on N (N: natural number) dot points provided on the touch panel surface of the touch panel.
  • N natural number
  • the touch panel evaluation data acquisition device includes an overall control unit and an analysis unit.
  • the overall control unit controls the dot processing device and the touch panel drive device.
  • the analysis unit acquires a plurality of capacity data that is data based on the sense signal received by the touch panel drive device, acquires the maximum value of the acquired plurality of capacity data as a maximum signal value in the capacity map, and the touch object is While the k-th (k: natural number, k ⁇ N) tapping point is being touched, a plurality of acquired maximum signal values in the capacity map are acquired, and an average value of the acquired maximum signal values in the plurality of capacity maps is obtained.
  • touch panel evaluation data which is electrostatic capacity distribution data in the touch panel surface of the touch panel, is acquired.
  • the analysis unit can acquire the average signal value corresponding to the kth dot point by executing the above process.
  • touch panel evaluation data which is variation data within the touch panel surface of the touch panel (capacitance data distribution on the touch panel surface) is appropriately acquired without requiring complicated work. Can do.
  • a pattern design of a single-layer touch panel (may be a multi-layer touch panel) can be efficiently performed.
  • 2nd invention is 1st invention, Comprising: When the maximum signal value in a capacity
  • capacitance map is larger than a predetermined threshold value, an analysis part is the kth object (k: natural number, k ⁇ N). It is determined that the hit point is touched, and the average value of the plurality of maximum signal values in the capacity map acquired when the maximum signal value in the capacity map is larger than the predetermined threshold corresponds to the kth hit point.
  • the touch panel evaluation data is acquired by acquiring the average signal value.
  • 3rd invention is 1st or 2nd invention, Comprising:
  • An analysis part has four states, a non-touch state, a pre-touch state, a touch state, and a post-touch state, as an internal state, and a capacity
  • the analysis unit sets the internal state to the touch state when the internal state is the pre-touch state and the maximum signal value in the capacity map is greater than a predetermined threshold value a predetermined number of times or more. After obtaining the average signal value at the hit point, the internal state is set to the post-touch panel state, and if the maximum signal value in the capacity map is smaller than a predetermined threshold, the internal state is set to the non-touch state.
  • This touch panel evaluation data acquisition apparatus has four internal states: a non-touch state, a pre-touch state, a touch state, and a post-touch state.
  • a non-touch state a pre-touch state
  • a touch state a touch state
  • a post-touch state a state that changes to the “touch state”, so that it is appropriately prevented from being erroneously recognized as being in the “touch state” and acquiring wrong data due to noise or the like. be able to.
  • a fourth invention is any one of the first to third inventions, wherein the analysis unit is configured to: (1) the touch object is a touch panel surface based on the average signal value corresponding to the k-th hit point. The state where the touch panel is touched is changed to the state where the touch panel surface is not touched, or (2) the touch object is not touching the touch panel surface and the touch panel surface is touched. A threshold value for determining the transition is determined.
  • a threshold for determining a touch state and a non-touch state is set for each hit point based on the average signal value. Therefore, in this touch panel evaluation data acquisition device, even if the signal level in the touch state of the maximum signal value in the capacitance map or the signal level in the non-touch state of the maximum signal value in the capacitance map varies greatly, The touch state and the non-touch state can be determined. That is, in this touch panel evaluation data acquisition device, the touch panel evaluation data is acquired in a state where the touch state and the non-touch state are properly grasped, so that touch panel evaluation data with higher accuracy can be acquired.
  • the coordinates on the display screen of the display device can be appropriately specified based on the position of the user's hand in the three-dimensional space even from a remote position without the need for a touch panel. Since the coordinate acquisition device and the display device can be realized, it is useful in the display device related industrial field and can be implemented in this field.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'objectif de la présente invention est de mettre en œuvre un dispositif d'acquisition de données d'évaluation de panneau tactile qui est capable d'acquérir de manière appropriée des données de variation à l'intérieur d'un écran d'un panneau tactile sans nécessiter d'opération complexe. L'invention concerne un dispositif d'acquisition de données d'évaluation de panneau tactile (1), comprenant une unité de commande globale (11) et une unité d'analyse (12). L'unité d'analyse (12) acquiert une pluralité d'instances de données de capacité qui sont des données basées sur un signal de détection qu'un dispositif de pilotage de panneau tactile (3) a reçu, acquiert le maximum de la pluralité acquise d'instances de données de capacité en tant que valeur de signal maximale acquises dans une carte de capacité, acquiert une pluralité des valeurs de signal maximales dans la carte de capacité tandis qu'un objet tactile touche un k-ème point de contact (k étant un nombre entier naturel inférieur ou égal à N), et acquiert une moyenne de la pluralité acquise de valeurs de signal maximales dans la carte de capacité en tant que valeur de signal moyenne correspondant au k-ème point de contact, ce qui acquiert des données d'évaluation de panneau tactile qui sont des données de la distribution de capacitance dans l'écran de panneau tactile du panneau tactile.
PCT/JP2015/079842 2014-10-28 2015-10-22 Dispositif d'acquisition de données d'évaluation de panneau tactile Ceased WO2016068016A1 (fr)

Applications Claiming Priority (2)

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JP2014219181 2014-10-28
JP2014-219181 2014-10-28

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WO2016068016A1 true WO2016068016A1 (fr) 2016-05-06

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005310093A (ja) * 2004-04-23 2005-11-04 Touch Panel Kenkyusho:Kk 抵抗膜式タッチパネルの評価装置
JP2010044730A (ja) * 2008-07-17 2010-02-25 Nec Corp タッチパネル検査装置およびタッチパネル検査方法
JP2010086026A (ja) * 2008-09-29 2010-04-15 Nissha Printing Co Ltd 静電容量センサモジュールの検査方法及びその検査装置
JP2012503774A (ja) * 2008-09-24 2012-02-09 スリーエム イノベイティブ プロパティズ カンパニー 相互静電容量を測定する回路及び方法
US20120187956A1 (en) * 2011-01-24 2012-07-26 Microsoft Corporation Touchscreen Testing
JP2013025780A (ja) * 2011-07-20 2013-02-04 Touch Panel Kenkyusho:Kk 静電容量式タッチパネルの検査・評価装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005310093A (ja) * 2004-04-23 2005-11-04 Touch Panel Kenkyusho:Kk 抵抗膜式タッチパネルの評価装置
JP2010044730A (ja) * 2008-07-17 2010-02-25 Nec Corp タッチパネル検査装置およびタッチパネル検査方法
JP2012503774A (ja) * 2008-09-24 2012-02-09 スリーエム イノベイティブ プロパティズ カンパニー 相互静電容量を測定する回路及び方法
JP2010086026A (ja) * 2008-09-29 2010-04-15 Nissha Printing Co Ltd 静電容量センサモジュールの検査方法及びその検査装置
US20120187956A1 (en) * 2011-01-24 2012-07-26 Microsoft Corporation Touchscreen Testing
JP2013025780A (ja) * 2011-07-20 2013-02-04 Touch Panel Kenkyusho:Kk 静電容量式タッチパネルの検査・評価装置

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