JP5691509B2 - Touch panel and its position detection method - Google Patents

Description

  The present invention relates to a touch panel, particularly a resistive film type touch panel, and a position detection method thereof.

In general, a touch panel known as a resistance film type has a configuration in which a pressing-side resistance film and a back-side resistance film are provided on the entire surfaces of a pressing-side substrate and a back-side substrate facing each other with a gap therebetween. . When the pressing side substrate is pressed and bent from the side opposite to the surface on which the pressing side resistance film is formed, the pressing side resistance film and the back side resistance film are in local contact, and the pressing side resistance film and the back side the resistance film electrically conductive at its contact point. In the resistance film type touch panel, a voltage is alternately applied to both ends of the pressing-side resistance film and both ends of the back-side resistance film, and the position of the contact point is detected based on conduction at the contact point.

  In this resistive film type touch panel, for example, as disclosed in Patent Document 1, when the input is not performed, that is, when the pressure is not pressed, the pressing side resistance film and the back side resistance film are not in contact with each other. The gap between the pressure-side resistance film and the back-side resistance film is defined by a plurality of spacers, or an insulating liquid is sealed in the gap between the pressure-side resistance film and the back-side resistance film.

JP 2006-506708 A

  As described above, in the resistive film type touch panel, a configuration in which a voltage is alternately applied to both ends of the pressing-side resistance film and both ends of the back-side resistance film, and the position of the contact point is detected based on conduction at the contact point. It is. Therefore, an electronic device incorporating a touch panel must be provided with a voltage application wiring for applying a driving voltage to both ends of the pressing-side resistance film and the back-side resistance film. There was a problem that it was necessary to connect the wiring, the pressing-side resistance film, and the back-side resistance film.

  Accordingly, the present invention provides a resistive film type touch panel capable of detecting the position of a contact point and using the voltage application wiring to one resistance film, eliminating the need for voltage application wiring to the other resistance film, and the position thereof An object is to provide a detection method.

In order to achieve the above object, one aspect of the touch panel of the present invention includes a first transparent substrate, a second transparent substrate that faces the first transparent substrate, and the surface that faces the surface of the second transparent substrate. A plurality of first transparent resistance films extending along the first direction on the surface of the first transparent substrate, and a surface of the second transparent substrate so as to face the first transparent resistance film The formed second transparent resistive film, the holding material that holds the first transparent substrate and the second transparent substrate at a constant interval, and the second transparent substrate are pressed, and the second transparent substrate is pressed. The two transparent resistance films electrically contact the two adjacent ones of the plurality of first transparent resistance films so that the two first transparent resistance films are electrically connected to each other through the second transparent resistance film. e Bei a detection circuit for detecting the position coordinates of a position to conduct, the said detection circuit includes a first magnetic of the plurality A voltage is sequentially applied to two adjacent first transparent resistance film sets at different timings while shifting the first transparent resistance film one by one with two adjacent resistance films as a set. Is detected at each timing when a current value flowing through the second transparent resistance film through the pair of two adjacent first transparent resistance films is equal to or greater than a predetermined value. Based on the detected current value at the timing at which a large current value is detected, the position of the position where the two adjacent first transparent resistance films are electrically connected via the second transparent resistance film A component in the first direction of coordinates is detected .

In order to achieve the above object, one aspect of the touch panel position detection method according to the present invention includes a first transparent substrate, a second transparent substrate facing the first transparent substrate, and the second transparent substrate. A plurality of first transparent resistance films extending along the first direction on the surface of the first transparent substrate facing the surface of the first transparent substrate, and the second transparent film facing the first transparent resistance film. A second transparent resistance film formed on the surface of the transparent substrate, and a holding material for holding the first transparent substrate and the second transparent substrate at a predetermined interval, and the second transparent detecting a deflection board is pressed, based on the detected second coordinate position transparent substrate is deflected, in the position detecting method for a touch panel to identify the pressed pressure position, before Symbol plurality No. as two pairs of adjacent groups out of one of the transparent resistive film, said first transparent resistive film Sequentially applying a voltage at different timings to the two sets of the first transparent resistive film adjacent shifting one by one, at each timing of applying a voltage to the two sets of the first transparent resistive film adjacent the detecting a current flowing through the second transparent resistive film, at the timing of detecting the current value greater than or equal the predetermined value to a predetermined value, based on the current value of the detection, adjacent the Detecting a component in the first direction of a position coordinate of a position where a pair of two first transparent resistance films is electrically conducted through the second transparent resistance film, and is equal to the predetermined value or Based on the position of the pair of two adjacent first transparent resistance films at a timing at which a current value larger than a predetermined value is detected, the pair of the two adjacent first transparent resistance films is the second electricity through the transparent resistive film Detecting a second component in the direction orthogonal to the first direction of the position coordinates of the position to be electrically connected to, characterized in that.

  According to the present invention, it is possible to detect the position of a contact point using a voltage application wiring to one resistance film and eliminating the need for a voltage application wiring to the other resistance film. Type touch panel and its position detection method can be provided.

FIG. 1 is a side sectional view showing an example of the configuration of a display device on which a touch panel according to a first embodiment of the present invention is formed. In particular, FIG. 1 (A) shows a state when not touched, and FIG. ) Indicates the state at the time of touch. FIG. 2 is a diagram illustrating an example of a detection circuit of the touch panel according to the first embodiment. FIG. 3A is a diagram for explaining the operation principle of the touch panel according to the first embodiment, and FIG. 3B is a diagram for explaining the width of the detection-side resistance film. FIG. 4 is a diagram illustrating an example of an operation flowchart of the controller of the touch panel according to the first embodiment. FIG. 5 is a diagram illustrating an example of a timing chart of the touch panel according to the first embodiment. FIG. 6 is a diagram illustrating an example of the configuration of the touch panel according to the second embodiment of the present invention. FIG. 7A is a diagram for explaining the aperture ratio in the conventional touch panel, and FIG. 7B is a diagram for explaining the aperture ratio in the touch panel according to the second embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
As shown the side view in FIG. 1 (A), the touch panel 10 according to the present embodiment is arranged through a spacer 30 on the observation side of the display panel 20 for displaying an image, and those the touch panel 10 and the display panel 20 Constitutes a display device with a touch panel.

The display panel 20 is, for example, a liquid crystal display panel, and is disposed opposite to the liquid crystal display panel with a predetermined gap, and the back side of the observation-side transparent substrate 21 bonded to the peripheral portion via a frame-shaped sealing material (not shown). Side substrate 22. A transparent common electrode 23 is formed on the surface of the observation-side transparent substrate 21 facing the back-side substrate 22, and R, G, and B color filters 24 are arranged corresponding to the arrangement of a plurality of pixels. . Further, on the surface of the back side substrate 22 facing the observation side transparent substrate 21, the transparent electrode 25 forming a plurality of pixels and a drive circuit (not shown) are driven and signal lines (not shown) are passed. a thin film transistor (TFT) 26 for applying a signal from the drive circuit of the unshown to those transparent electrode 25, are provided Te. Then, a liquid crystal (not shown) is sealed in a space between the observation-side transparent substrate 21 and the back-side substrate 22 and surrounded by the sealing material (not shown).

  The liquid crystal display panel may be any of a twisted nematic type, a super twisted nematic type, a non-twisted homogeneous type, a vertical alignment type, a bend alignment type, a ferroelectric or antiferroelectric liquid crystal display panel. In addition, the first electrode for forming a plurality of pixels on the inner surface of any one of the pair of substrates is not limited to the one provided with the transparent electrodes for forming the plurality of pixels on the inner surfaces of the pair of substrates. And a second electrode having a plurality of elongated electrode portions formed on the liquid crystal layer side so as to be insulated from the first electrode, and a horizontal electric field (in the direction along the substrate surface) between these electrodes. A lateral electric field control type that generates an electric field and changes the alignment state of the liquid crystal molecules may be used. Furthermore, the display panel 20 is not limited to a liquid crystal display panel, and may be an organic EL (electroluminescence) display panel or the like.

The touch panel 10 includes a detection-side transparent substrate 11 as a first transparent substrate and a pressing-side transparent substrate 12 as a second transparent substrate. The pressing-side transparent substrate 12 is, for example, a glass plate or a resin film formed in a rectangular shape, and the detection-side transparent substrate 11 is, for example, a glass plate formed in a rectangular shape having substantially the same size as the pressing-side transparent substrate 12. Etc. The surface of the pressing-side transparent substrate 12 opposite to the detection-side transparent substrate 11, the detection-side resistance film 13 is formed as a first transparent resistive film, those detection-side resistor film 13, the first direction A plurality of stretched arrangements are provided. On the other hand, on the surface of the pressing side transparent substrate 12 facing the detection side transparent substrate 11, a pressing side resistance film 14 as a second transparent resistance film is formed on the entire surface. The detection-side resistance film 13 and the pressing-side resistance film 14 are formed in a wider range than the touch area for performing touch input. Although not shown in the figure, the opposing surface of the detection-side transparent substrate 11 and the pressing-side transparent substrate 12 is a SiO ₂ film is deposited on the entire detection-side resistance film on the SiO ₂ film 13 and the pressing side resistance film 14 are formed. The detection-side resistance film 13 and the pressing-side resistance film 14 are made of, for example, indium tin oxide (ITO). Furthermore, ITO is easily broken when bent, and the range of the resistance value is also limited. Therefore, a fine silver wire pattern 15 is formed between the pressing-side transparent substrate 12 (and the SiO ₂ film) and the pressing-side resistance film 14. By providing, the flexibility and the resistance value may be controlled.

  In addition, a transparent insulating spacer 16 is formed on the pressing side resistance film 14 of the pressing side transparent substrate 12 at every predetermined interval. Further, the detection-side transparent substrate 11 and the pressing-side transparent substrate 12 are bonded together by a sealing material (not shown) applied in a frame shape over the entire circumference of these substrates. A space surrounded by the detection-side resistance film 13, the pressing-side resistance film 14, and the sealing material is an air layer.

  With such a configuration, when the touch panel 10 is pressed from the pressing side transparent substrate 12 side by a finger, a touch pen 40, or the like, the pressing side transparent substrate 12 bends as shown in FIG. The film 14 is in contact with a plurality of adjacent detection-side resistance films 13 on the detection-side transparent substrate 11. As a result, the plurality of detection-side resistance films 13 are electrically connected to each other at the contact portions via the pressing-side resistance film 14. The touch panel 10 according to the present embodiment detects the pressed position based on this electrical continuity.

In order to perform this position detection, the touch panel 10 according to the present embodiment includes a detection circuit as shown in FIG. That is, the detection circuit includes resistance film selection switches x _{1 to} x _i each connected to i detection circuits 13 (i = 12 in the example of FIG. 2), and ( i−1 ) a series circuit of the path setting switch s ₁ ~s _i-1, a series circuit of a power supply V ₀ which is connected across the series circuit of the switching said path set and the reference resistor R, according to the reference resistor R The voltmeter V for detecting the voltage, the resistance film selection switches x _{1 to} x _i and the ON / OFF states of the path setting switches s _{1 to} s _i-1 are controlled as will be described later. And a controller 17 that calculates a pressed position based on the voltage value Vt detected by the voltmeter V.

Here, the i detection-side resistance films 13 are connected to one terminals of corresponding resistance film selection switches x _{1 to} x _i (x ₁ to x _{12 in} the example of FIG. 2). The other terminals of the resistance film selection switches x _{1 to} x _i-1 are connected to one terminal of the path setting switches s _{1 to} s _i-1 , and the other terminal of the resistance film selection switch x _i is set to the path setting. Connected to the other terminal of the switch s _i-1 . The other terminals of the route setting switches s _{1 to} s _i-2 are connected to the one terminal of the route setting switches s _{2 to} s _i-1 . A series circuit of the power source V ₀ and the reference resistor R is connected between the one terminal of the path setting switch s _{1 and} the other terminal of the path setting switch s _i-1. Yes.

  Note that the pressing-side resistance film 14 on the pressing-side transparent substrate 12 is in an electrically floating state.

  Here, the driving principle of the touch panel 10 having such a configuration will be described with reference to FIG.

In the touch panel 10, the switches x ₁ to x _i and s _{1 to} s _i−1 are switched under the control of the controller 17, and two adjacent detection side resistance films 13 on the detection side transparent substrate 11 are switched. As a set, a voltage is sequentially applied from the power source V ₀ while shifting the detection-side resistance film 13 to be selected one by one. In each state, the voltage value Vt applied to the reference resistor R is read by the voltmeter V in order to detect the current value flowing through the pair of adjacent detection-side resistance films 13 via the pressing-side resistance film 14. .

  If the finger or the touch pen 40 is not touched, any pair of the two detection-side resistance films 13 that are adjacent to each other will not be in a conductive state, so the current value is smaller than a predetermined value and the voltage detected by the voltmeter V The value Vt is also smaller than a predetermined value. In such a case, the controller 17 determines that there is no detection.

On the other hand, when the finger or the touch pen 40 is touched as shown in FIG. 3A, the position of the pressing-side transparent substrate 12 is deflected, and the two detections where the pressing-side resistance film 14 is adjacent are detected. As a result, the two adjacent detection-side resistance films 13 in the set are electrically connected via the pressing-side resistance film 14. Due to this conduction, a current value j that is equal to or greater than a predetermined value flows through the series circuit of the power source V ₀ and the reference resistor R, and the current value j is a voltage value Vt applied to the reference resistor R. Detected by voltmeter V. Here, the detected voltage value Vt is
Vt = RV ₀ / {R + R s (2y + p) / w} (1)
It becomes. However, Rs is the sheet resistance of the detection-side resistance film 13 and the pressing-side resistance film 14, and y represents the y-coordinate. Further, p is the pitch between adjacent detection-side resistance films 13 as shown in FIG. 3A, and w is the width of the detection-side resistance film 13 as shown in FIG. 3B.

Therefore, from the above equation (1), conversely,
y = (1/2) [w (R / R s ) {(V ₀ / V) −1} −p] (2)
Thus, the y coordinate can be obtained. Of course, when the silver wire pattern 15 is provided, the resistance value is also taken into consideration.

The x coordinate is detected from the detection timing of the voltage value Vt. For example, the midpoint of the x coordinates of two adjacent detection-side resistance films 13 in the set at the detection timing may be used. Further, when the pressing-side resistance film 14 comes into contact with three or more adjacent detection-side resistance films 13, position detection is performed for each two adjacent ones, so that a plurality of x coordinates are detected. Therefore, in such a case, the intermediate value between the maximum value and the minimum value of the plurality of detected x-coordinate may be the position detection result. In this case, however, in order to distinguish simultaneous touch operation of the two points, previously determined threshold value, greater the difference between the maximum value and the minimum value of the plurality of detected x-coordinate than the threshold, two points A plurality of x-coordinates are assumed to be the position detection result as a touch.

  Next, the operation of the touch panel 10 according to the present embodiment will be described with reference to an operation flowchart of the controller 17 shown in FIG. 4 and a timing chart of the touch panel 10 shown in FIG.

First, as an initial setting, the controller 17 switches the resistance film selection switches x _{1 to} x _i to OFF and the path setting switches s _{1 to} s _i-1 to ON (step S11), and sets the internal counter n to the internal counter n. “1” is set (step S12).

Then, switch the resistive film selection switch _{x n} and _{x n + 1} to ON (step S13), and switches OFF the switch _{s n} for routing (step S14), and in order to detect the current value j, the voltage by the voltmeter V The value Vt is detected (step S15). Here, in order to determine whether or not the current value j is smaller than the predetermined current value, it is determined whether or not the detected voltage value Vt is smaller than the predetermined value Vt1 (step S16). Here, the predetermined value Vt1 may be 0 V, but it is preferable to set a voltage value larger than that in consideration of the influence of noise and the like.

When the current value j flowing through the pair of two adjacent detection-side resistance films 13 is smaller than a predetermined current value, that is, when the detection voltage value Vt is smaller than the predetermined value Vt1, the selected resistance film selection switch x _The pressing-side resistance film 14 is not in contact with the set of two adjacent detection-side resistance films 13 connected to _n and x _{n + 1} , that is, a touch operation at a position corresponding to the set of the detection-side resistance films 13 is performed. That is not done. Therefore, in this case, it switches the resistive film selection switch _{x n} to OFF, switches the switch _{s n} for routing to ON (step S17). The resistance film selection switch _{xn + 1} remains ON. Then, the internal counter n is set to “n + 1” (step S18).

  Thereafter, it is determined whether or not the updated value of the internal counter n has reached i (step S19). If the updated value of the internal counter n has not yet reached i, the process returns to step S13. Thereby, the above-described processing can be performed on the next two adjacent detection-side resistance films 13.

  As described above, adjacent two of the plurality of detection-side resistance films 13 are grouped at different timings, and the detection-side resistance films 13 to be selected are sequentially selected while being shifted one by one, and a voltage is applied. The voltage value Vt applied to the reference resistor R is read in order to detect the current value j flowing through the pair of detection-side resistance films 13 via the pressing-side resistance film 14.

When the pressing-side resistance film 14 to the set of resistive film selection switch x _n and x _{n + 1} and the adjacent connected to two detection side resistive film 13 by the selected contact, that is, the set of their detection side resistive film 13 When a touch operation is performed at the corresponding position, as described above, the current value j corresponding to the touch position (y coordinate) is detected by the voltmeter V as the detected voltage value Vt.

  Therefore, in step S16, the current value j flowing through the pair of the two detection-side resistance films 13 adjacent via the pressing-side resistance film 14 is equal to or greater than the predetermined current value, that is, If it is determined that the detected voltage value Vt is equal to or greater than the predetermined value Vt1, the controller 17 performs coordinate calculation (step S20). That is, the y coordinate is calculated by the above-described equation (2), and the x coordinate is obtained from the coordinates of the detection-side resistance film 13 that can be discriminated from the value of the internal counter n. Then, the calculated x and y coordinates are output to a control unit or the like of the electronic device main body in which the touch panel 10 is incorporated (step S21). Thereafter, the process proceeds to step S17, and the above-described operation is repeated.

Thus, when the processing up to the last set (x _i−1 , x _i ) of the resistive film selection switches is completed, it is determined in step S19 that the updated value of the internal counter n has reached i. Therefore, in this case, from after switching the resistive film selection switch _{x n} clogging _{x i} to OFF (step S22), and returns to the step S12, the first set of resistive film selection switch _(x 1, _{x 2)} The above processing is repeated.

As described above, in the touch panel according to the first embodiment, the detection-side transparent substrate 11, the pressing-side transparent substrate 12 that faces the detection-side transparent substrate 11, and the surface that faces the pressing-side transparent substrate 12. A plurality of detection-side resistance films 13 extended along the first direction on the surface of the detection-side transparent substrate 11 and formed on the surface of the pressing-side transparent substrate 12 so as to face the detection-side resistance film 13. The pressing-side resistance film 14, the insulating transparent substrate 16 that holds the detection-side transparent substrate 11 and the pressing-side transparent substrate 12 at a predetermined interval, and the pressing-side transparent substrate 12 are pressed to form the pressing-side resistance. by film 14 is in contact with the two adjacent groups out of the plurality of detection-side resistor film 13, the position of the position where the two detection side resistor film 13 are electrically conducted through the pressing-side resistive film 14 Detection circuit that detects coordinates Since with a, as unnecessary voltage applying wire by utilizing the voltage applying wire to the pressing side resistance film 14 to the detection-side resistor film 13, it is possible to detect the position of the contact point. Here, the detection circuit sets two adjacent detection-side resistance films 13 at different timings as a set, sequentially selects the detection-side resistance films 13 while shifting one by one, and applies a voltage. The voltage value Vt applied to the reference resistor R is read in order to detect the current value flowing through the pressing-side resistance film 14 in the set of two adjacent detection-side resistance films 13, and is equal to or equal to the predetermined current value. When a current value larger than the predetermined voltage value Vt1 is detected, that is, when a voltage value equal to or larger than the predetermined voltage value Vt is read, the detected current value, that is, the read voltage value Vt. And the y-coordinate which is the first component of the position coordinate of the position where the pressing-side resistance film 14 comes into contact with the plurality of detection-side resistance films 13 and is electrically conducted by the pressing of the pressing-side transparent substrate 12 based on Ma The detection timing of the current value, i.e. is the second component of the position coordinates of the position of the electrically conductive based on a set position of the voltage value Vt of the two adjacent said at read timing detection side resistive film 13 The x coordinate is detected.

  Furthermore, since the pressing-side resistance film 14 may be floating, no wiring is required.

  Therefore, the touch panel according to the first embodiment can be easily assembled into an electronic device.

  In addition, since the position of each adjacent detection-side resistance film 13 is measured, multi-touch detection is possible even though it is a resistance film type touch panel.

[Second Embodiment]
In the first embodiment, the pressing-side resistance film 14 is a single transparent resistance film formed on the entire surface of the pressing-side transparent substrate 12. On the other hand, in the touch panel 10 according to the second embodiment, as shown in FIG. 6, the pressing-side resistance film 14 is secondly orthogonal to the first direction in which the detection-side resistance film 13 is extended. Are formed as a plurality of transparent resistance films extending along the direction.

  The touch panel 10 having such a pressing-side resistance film 14 also operates in the same manner as in the first embodiment, and thus the same effect can be obtained.

Further, for example, assuming that the transmittance TITO of one layer of the transparent resistive film made of _ITO is 90% (the portion without ITO is assumed to be 100% transmittance), as shown in FIG. In such a conventional resistive film type touch panel, since the lower transparent resistance film 13 ′ and the upper transparent resistance film 14 ′ are formed on the entire surface of the substrate, the transmittance T of the touch panel is T _ITO ² = 81%. In contrast, in the second embodiment, for example, the arrangement pitch p of the detection-side resistance film 13 and the pressing-side resistance film 14 is both 0.1 mm, and the width W of the detection-side resistance film 13 and the pressing-side resistance film 14 is, for example. Are both 0.01 mm, the transmittance T of the touch panel 10 according to the present embodiment is

That is 98%.

  Thus, the touch panel 10 according to the second embodiment can obtain high transmittance.

  When the touch panel 10 according to the second embodiment is arranged on the observation side of the display panel 20 that displays an image to configure a display device with a touch panel, the first direction and the first direction around the pixels of the display panel 20. By aligning the arrangement of the detection-side resistance film 13 and the pressing-side resistance film 14 with the arrangement of the signal lines extending in the direction 2, that is, the transparent resistance films 13 and 14 are not provided on the pixels. Thus, the effective transmittance can be improved.

  Furthermore, it goes without saying that the function of the controller 17 of the touch panel 10 may be incorporated in the drive circuit of the display panel.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the column of problems to be solved by the invention can be solved and the effect of the invention can be obtained. The configuration in which this component is deleted can also be extracted as an invention. Furthermore, you may combine suitably the component over a different modification.

DESCRIPTION OF SYMBOLS 10 ... Touch panel 11 ... Detection side transparent substrate 12 ... Pressure side transparent substrate 13 ... Detection side resistance film 14 ... Pressure side resistance film 15 ... Silver wire pattern 16 ... Insulating spacer 17 ... Controller 20 ... Display panel 30 ... Spacer 40 ... Touch pen x _{1 to} x ₁₂ ... resistive film selection switch s _{1 to} s ₁₁ ... path setting switch V ₀ ... power supply R ... reference resistance V ... voltmeter

Claims (8)

A first transparent substrate;
A second transparent substrate facing the first transparent substrate;
A plurality of first transparent resistance films extending along the first direction on the surface of the first transparent substrate facing the surface of the second transparent substrate;
A second transparent resistance film formed on the surface of the second transparent substrate so as to face the first transparent resistance film;
A holding material for holding the first transparent substrate and the second transparent substrate at regular intervals;
When the second transparent substrate is pressed and the second transparent resistance film contacts two adjacent ones of the plurality of first transparent resistance films, the two first transparent resistance films Is a detection circuit for detecting a position coordinate of a position where electrical conduction is established through the second transparent resistive film;
Bei to give a,
The detection circuit includes a pair of two first transparent resistance films adjacent to each other while shifting the first transparent resistance film one by one by taking two adjacent ones of the plurality of first transparent resistance films as a set. Voltage is sequentially applied at different timings, and at each timing when the voltage is applied, a current value flowing through the second transparent resistance film to the set of two adjacent first transparent resistance films is detected, Based on the detected current value at a timing at which a current value equal to or greater than the predetermined value is detected, the pair of the two adjacent first transparent resistance films is the second transparent resistance. Detecting a component in the first direction of a position coordinate of a position electrically conducting through the film;
A touch panel characterized by that. The detection circuit, based on the position of the pair of two adjacent first transparent resistance films at a timing at which a current value equal to the predetermined value or greater than the predetermined value is detected , Detecting a component in a second direction orthogonal to the first direction of a position coordinate of a position where a set of the first transparent resistance film is electrically conducted through the second transparent resistance film ; The touch panel according to claim 1 . It said second transparent resistance film touch panel as set forth in claim 1 or 2, characterized in that electrically in a floating state. The said 2nd transparent resistive film is a some transparent resistive film extended | stretched and arrange | positioned along the 2nd direction orthogonal to the said 1st direction, The any one of the Claims 1 thru | or 3 characterized by the above-mentioned. Touch panel as described in 1. In the detection circuit, i is an integer of 2 or more,
Resistance film selection switch x connected to each of the i first transparent resistance films ₁ ~ X _i When,
(I-1) path setting switches s ₁ ~ S _i-1 A series circuit of
Route setting switch s ₁ ~ S _i-1 Power supply V connected across the series circuit ₀ And a series circuit of the reference resistor R,
A voltmeter V for detecting a voltage applied to the reference resistor R;
Resistance film selection switch x ₁ ~ X _i And the path setting switch s ₁ ~ S _i-1 A controller for controlling the ON / OFF state of the sensor, and calculating a pressing position based on the state and the voltage value Vt detected by the voltmeter V;
The touch panel according to claim 1, further comprising: The i first transparent resistive films correspond to the corresponding resistive film selection switch x. ₁ ~ X _i Connected to one terminal of each
Resistance film selection switch x ₁ ~ X _i Is the resistance film selection switch x ₁ ~ X _i The ON / OFF state is controlled between each one terminal and the other terminal,
Resistance film selection switch x ₁ ~ X _i The other terminal of each is connected to the path setting switch s. ₁ ~ S _i-1 Connected to each terminal of
Route setting switch s ₁ ~ S _i-1 N of the route setting switches s _n Is the route setting switch s _n Terminal and the path setting switch s _{n + 1} The ON / OFF state is controlled with the other terminal,
The power supply V ₀ And the reference resistor R are connected in series with the path setting switch s. ₁ The resistive film selection switch x ₁ And the path setting switch s _i-1 The resistive film selection switch x _i Connected to the terminal connected to the
The touch panel according to claim 5. The controller converts the n-th first transparent resistance film and the (n + 1) -th first transparent resistance film out of the i first transparent resistance films into the two adjacent first first resistance films. When selecting as a pair of transparent resistance film,
Resistance film selection switch x ₁ ~ X _i N of the resistive film selection switches x _n And the (n + 1) th resistive film selection switch x _{n + 1} And the other resistance film selection switch is controlled to be in an OFF state.
Route setting switch s ₁ ~ S _i-1 N of the route setting switches s _n And control the other path setting switch to the ON state.
The touch panel according to claim 6. A first transparent substrate;
A second transparent substrate facing the first transparent substrate;
A plurality of first transparent resistance films extending along the first direction on the surface of the first transparent substrate facing the surface of the second transparent substrate;
A second transparent resistance film formed on the surface of the second transparent substrate so as to face the first transparent resistance film;
A holding material for holding the first transparent substrate and the second transparent substrate at regular intervals;
With
Detecting a deflection the second transparent substrate is pressed based on the detected second coordinate position transparent substrate is deflected, in the position detecting method for a touch panel to identify the pressed pressurized position,
As two pairs of adjacent groups out of the previous SL plurality of first transparent resistance film, a pair in the different timings of the first transparent resistive film one by one of the two adjacent while shifting the first transparent resistive film sequentially applying a voltage, at each timing of applying a voltage to detect the current flowing through the second transparent resistive film into two sets of the first transparent resistive film adjacent the, to a predetermined value in equal or timing of detecting the current value greater than the predetermined value, based on the current value of the detection, the two sets of the first transparent resistive film adjacent via the second transparent resistive film Detecting the component in the first direction of the position coordinate of the electrically conducting position ;
Based on the set position of the predetermined equal to the value or the predetermined two adjacent said at timing of detecting the current value greater than the value first transparent resistive film, the adjacent two first transparent resistive Detecting a component in a second direction orthogonal to the first direction of a position coordinate of a position where a set of films is electrically conducted through the second transparent resistance film ;
A touch panel position detection method.

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