JP2012238199A - Inspection tool and inspection method of touch panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection tool with which a touch panel can be inspected easily in a short time and which has versatility, and an inspection method of the touch panel.SOLUTION: By using A T-shaped inspection tool 1 which has a head part 2 disposed at an edge of a touch panel 5 and a body part 3 disposed on an operation plane, a plurality of conductive areas 6 provided on a lower face of the body part 3 in contact with the operation plane of the body part 3 and a plurality of conductive areas 8 provided on an upper face opposed to the lower face of the body part 3 are electrically connected. The conductive areas 6 are insulated from each other by an insulation area 7, and the conductive areas 8 are insulated from each other by an insulation area 9. The inspection tool 1 is disposed on a touch panel, a touch operation is performed while bringing a conductive member into contact with the conductive areas on the upper face of the body part 3, and touch position detection accuracy of the touch panel is inspected.

Description

  The present invention relates to an inspection jig and a touch panel inspection method, and more particularly to an inspection jig used for touch panel inspection and a touch panel inspection method using the inspection jig.

  In recent years, electronic devices such as mobile phones, smartphones, and PDAs (personal digital assistants) have a large demand for large screens, and there are few areas where input devices such as switches and numeric keys can be arranged. Also, there is a demand for an information input method that allows a user to input information in an easy-to-understand manner by touching a display image while referring to an image displayed on a display element such as a liquid crystal display. Therefore, a demand for a display device with a touch panel is increasing recently.

The touch panel is a general term for input devices that are arranged on a display element such as the above-described liquid crystal display and detect the touch position when an operator touches the operation surface with a finger or a pen. Examples of the contact position detection method include a resistance film method and a capacitance method.
In the resistive film system, two substrates having transparent electrodes on the surface are arranged apart from each other so that the transparent electrodes face each other. That is, since two substrates are required, it is difficult to reduce the thickness. The conventional resistive film type touch panel has a structure in which the electrodes are short-circuited by pressing the substrate, resulting in wear and the like and poor durability.

  The electrostatic capacity method can be thinned by using a single substrate, and is particularly suitable for portable electronic devices. The electrostatic capacity method utilizes the fact that a human is a conductor and an operator's finger functions as a ground. For example, when a finger touches the sensing electrodes arranged in a matrix on the touch panel substrate, a capacitance is formed between the finger and the electrode at the touch position, and such a change is detected by a control circuit or the like. Then, the position coordinate information of the finger touch is read, and the touch position is detected.

  In such a capacitive touch panel, a capacitance distribution may be formed in the operation surface such as a film thickness distribution of components such as electrodes. In this case, detection of a minute capacitance change is affected, and as a result, accurate touch position detection may not be possible. Therefore, in the touch panel, inspection performed after manufacturing is very important.

  As a technique related to touch panel inspection, Patent Document 1 describes a touch panel inspection apparatus including a stage on which a touch panel is placed, a pen member that replaces a human finger, and an arm member that supports the pen member. Yes. In the touch panel inspection apparatus described in Patent Document 1, a touch panel is placed on a stage, a pen member dedicated to the touch panel is fixed to the tip of the arm member, and the arm is arranged so that the tip of the pen member is placed on the operation surface of the touch panel. Adjust and fix the height of the rail member that supports the member. Then, the touch panel is inspected by applying a load to a desired position of the touch panel with the pen member.

  Patent Document 2 includes an insulating substrate disposed on the touch panel, a plurality of electrodes formed on the surface of the insulating substrate on the touch panel side, and a switch for grounding the plurality of electrodes independently of each other. A touch panel inspection device is described. The touch panel inspection device described in Patent Document 2 is placed on a touch panel. The touch operation of the finger can be simulated by the electrode serving as the ground potential of the inspection device, and the inspection at a desired position on the touch panel can be easily performed.

JP 2003-303051 A JP 2010-44730 A

  However, the touch panel inspection device described in Patent Document 1 has a problem that the device becomes large-scale and a problem that a pen member is directly applied to the touch panel, so that the touch panel surface is scratched. Moreover, since the inspection apparatus mechanically operates the pen member, there is a problem that the time required for the inspection becomes a long time.

  And in a touch panel, in order to improve the detection accuracy of a touch position, while miniaturizing an electrode structure, more electrodes may be arrange | positioned. In that case, in the touch panel inspection apparatus described in Patent Document 2, the number of electrodes to be configured is increased, which may impose a heavy burden on the control of the potentials of these electrodes. In addition, the touch panel inspection device described in Patent Document 2 needs to have an outer shape that matches the size of the touch panel to be inspected, and has a problem that the versatility to cope with various touch panel inspections is poor. Had.

  Therefore, there is a need for a touch panel inspection device that can be used for touch panels of various sizes and a touch panel inspection method using the touch panel that can be easily inspected without damaging the touch panel without causing the device to become large-scale. ing.

The present invention has been made in view of the problems of the touch panel inspection apparatus and the touch panel inspection method described above.
That is, an object of the present invention is to provide a versatile touch panel inspection jig that can be applied to touch panels of various sizes and can be easily and quickly inspected without damaging the touch panel, and a touch panel using the same. To provide an inspection method.

  Other objects and advantages of the present invention will become apparent from the following description.

A first aspect of the present invention is a T-shaped inspection jig having a head disposed on an edge portion of a touch panel and a trunk disposed on an operation surface of the touch panel,
The plurality of first conductive regions provided on the lower surface in contact with the operation surface of the body touch panel and the plurality of second conductive regions provided on the upper surface facing the lower surface of the body are electrically The first conductive regions are insulated from each other by the first insulating region, and the second conductive regions are insulated from each other by the second insulating region. Concerning ingredients.

In the first aspect of the present invention, the first conductive region and the second conductive region are integrated, and the first insulating region and the second insulating region are also a pair,
These one objectives are preferably arranged alternately along the longitudinal direction of the body.

In the first aspect of the present invention, the first insulating region and the second insulating region integrally form an insulator,
The insulator is provided with a through hole that penetrates one surface and the other surface,
It is preferable that the first conductive region and the second conductive region are electrically connected via the through hole.

  According to a second aspect of the present invention, the inspection jig according to the first aspect of the present invention is disposed on a touch panel, a conductive member is brought into contact with the second conductive region, and a touch operation is performed on the touch panel. The present invention relates to a touch panel inspection method characterized by inspecting the touch position detection accuracy.

  In the second aspect of the present invention, it is preferable to perform the touch operation while sliding the conductive member in the longitudinal direction of the body portion of the inspection jig.

  ADVANTAGE OF THE INVENTION According to this invention, a touch panel can be test | inspected simply and for a short time, the touch-tool inspection jig which has versatility, and the touch-panel inspection method using the same can be provided.

It is a graph explaining the method of linearity evaluation of a touch panel. It is a top view explaining the structure of the inspection jig of this Embodiment. It is a bottom view explaining the structure of the inspection jig of this Embodiment. It is a top view which shows typically the state by which the inspection jig of this Embodiment was installed on the touch panel. It is a figure explaining the connection method between the electroconductive areas of the trunk | drum of the inspection jig of this Embodiment. It is a one part typical perspective view explaining another example of composition of a drum section of an inspection jig of this embodiment. It is a figure which illustrates typically the inspection method of the touch panel of this embodiment. It is a figure which illustrates typically the effect of the inspection method of the touch panel of this embodiment. It is a figure which shows the example of the test | inspection result by the test | inspection method of the touch panel using the test | inspection jig of this Embodiment.

  Since the touch panel enables highly accurate detection of the touch position, as described above, the inspection is important. One of the inspections is an inspection called linearity evaluation. In this linearity evaluation, the touch position detection accuracy of the touch panel is inspected. As the method, for example, a conductive member such as a pen member or a metal bar imitating a human finger is used, and a touch operation is performed so as to draw a single straight line on the operation surface of the touch panel. More specifically, a large number of touch operations are performed on the operation surface while shifting the touch position with predetermined short intervals in a predetermined linear direction. And the position coordinate information of the touch position corresponding to such many touch operations is read, and the dispersion | variation in a touch position detection result is evaluated. In particular, when the touch position is shifted in the linear direction on the operation surface, the variation in the position detection result in the direction perpendicular to the linear direction is evaluated, and the touch position detection accuracy of the touch panel is inspected.

  FIG. 1 is a graph illustrating a method for evaluating the linearity of a touch panel.

  On the operation surface of the touch panel, for example, an X coordinate that is a horizontal direction when using a correctly installed touch panel and a Y coordinate that is a vertical direction perpendicular to the X coordinate are set. In this case, assuming that the operation surface of the touch panel has a vertically long rectangular shape, the X axis is a coordinate axis parallel to the lower side or the upper side of the operation surface, and the Y axis is parallel to the left side or the right side that is the side extending in the longitudinal direction of the operation surface. Coordinate axes. In the touch panel, for example, the operation surface is equally divided into 352 in the X-axis direction and equally divided into 480 in the Y-axis direction so that the touch position can be detected with a resolution of 352 × 480. ing. In this case, the touch position is read as a position coordinate composed of an X coordinate having a value of 1 to 352 and a Y coordinate having a value of 1 to 480, and the touch position is detected.

  In such a touch panel linearity evaluation, the above-described multiple touch operations in the linear direction are performed. In this case, for example, multiple touch operations are performed in the direction of the straight line extending in a direction parallel to the above-described X-axis direction. To do. Then, as shown in FIG. 1, the detected touch position is plotted on a graph, and the variation in the value of the Y coordinate of each plot is evaluated to evaluate the linearity of the touch panel. In the touch panel having a good position detection performance, as shown in FIG. 1, the plot result is a good straight line. If the performance of the touch panel varies, the Y coordinate value varies in the plot, and the obtained plot does not show a straight line shape. The position detection performance of the touch panel can be evaluated by evaluating the variation state of the plot in the Y-axis direction. In a touch panel with variation in position detection performance, when linearity is evaluated and plotting is performed in the same manner as in FIG. 1, for example, the maximum Y coordinate in many touch position detections is 230, and the minimum is 200. The deviation value between them may be 30. In such a case, it is possible to evaluate the linearity of the touch panel using such a deviation value (30) or the like.

  Although it is the linearity evaluation of the touch panel as described above, when performing the evaluation, it is important to accurately perform many touch operations in one linear direction. If the touch operation on such a straight line is not possible, it is not possible to distinguish whether the cause of the variation in the Y coordinate of the detected touch position is due to the variation in the touch operation or the performance of the touch panel, An accurate evaluation cannot be performed. Therefore, it is difficult for a person to actually touch the touch panel and perform a straight line touch operation, and it is necessary to use an inspection apparatus or the like.

  The linearity evaluation of the touch panel as described above can also be performed using the inspection apparatuses described in Patent Document 1 and Patent Document 2 described above. However, in that case, the problem described above is caused. Thus, as a result of intensive studies, the present inventors have developed the inspection jig of the present embodiment in which the problems of the conventional inspection apparatus are improved. Below, the inspection jig of this Embodiment and the inspection method using the same are demonstrated.

  The inspection jig of the present embodiment is an inspection jig suitable for touch panel evaluation, particularly linearity evaluation.

  FIG. 2 is a plan view for explaining the structure of the inspection jig according to the present embodiment.

  FIG. 3 is a bottom view for explaining the structure of the inspection jig according to the present embodiment.

  As shown in FIGS. 2 and 3, the inspection jig 1 according to the present embodiment includes a head 2 to be arranged at an edge portion of a touch panel (not shown in FIGS. 2 and 3), and operation of the touch panel. It has a T-shape having a body portion 3 disposed on the surface. The width in the direction orthogonal to the longitudinal direction of the body part 3 is preferably set to 3 mm to 15 mm assuming a touch operation with a human finger or a touch operation with a conductive member such as a metal rod, as will be described later. It is preferable that the length of the trunk | drum 3 is longer than the magnitude | size of the touchscreen used as test object, ie, the width | variety of the horizontal direction at the time of installation, or the width | variety of a vertical direction. For example, the length of the trunk portion 3 can be set to 50 mm to 300 mm.

  In addition, the length of the trunk | drum 3 can be determined so that it may become the length similar to the width | variety and magnitude | size of the touchscreen used as test object. And the length of the trunk | drum 3 can also be made longer than the width | variety and magnitude | size of the touchscreen used as test object. If it has a length longer than the width and size of the touch panel to be inspected, it can be used for the inspection. Therefore, it is possible to prepare one inspection jig and apply it to inspection of touch panels of various sizes having a width shorter than the length of the body portion 3. Therefore, the inspection jig 1 has high versatility.

  FIG. 4 is a plan view schematically showing a state in which the inspection jig of the present embodiment is installed on the touch panel.

  As shown in FIG. 4, in the inspection jig 1, the edge on the body 3 side in the longitudinal direction of the head 2 is arranged in accordance with the edge of the touch panel 5 to be inspected, and at the bottom of the body 3. The surface is arranged in contact with the operation surface of the touch panel 5. The trunk | drum 3 consists of columnar members, and has a columnar shape. The cross-sectional shape in the direction orthogonal to the longitudinal direction of the body portion 3 is preferably a shape in which two sides derived from the lower surface and the upper surface are parallel to each other. For example, the cross-sectional shape in the direction orthogonal to the longitudinal direction of the body part 3 preferably has a columnar shape such as a square, a rectangle, a parallelogram, or a trapezoid. In particular, the cross-sectional shape of the body part 3 is a trapezoid, and it is preferable that the upper base corresponding to the upper surface of the body part 3 is a trapezoid longer than the lower base corresponding to the lower surface. By providing such a shape, the upper surface is wider than the lower surface of the trunk portion 3, and it is possible to more easily perform a touch operation with a metal rod that is a pseudo finger or a human finger.

  And although the trunk | drum 3 can be made into the rigid structure which consists of a rigid member, rigidity is not necessarily essential. The trunk | drum 3 should just be equipped with the rigidity which is arrange | positioned on a touchscreen and can maintain an initial shape of self. Therefore, the trunk | drum 3 can be comprised using a glass material, a timber, a rubber material, a resin material, etc. so that it may mention later.

  Furthermore, the inspection jig 1 according to the present embodiment can freely select a set angle between the head 2 and the body 3. That is, the angle between the head 2 and the trunk 3 can be changed in accordance with the shape of the touch panel and the inspection position of the touch panel. By doing so, the body 3 of the inspection jig 1 can be arranged in a desired direction with respect to the direction of edge formation of the touch panel, and various inspections such as linearity evaluation in an arbitrary direction with respect to the edge of the touch panel are performed. It becomes possible.

  As shown in FIG. 3, the inspection jig 1 is arranged at a predetermined pitch in the longitudinal direction of the body 3 with a conductive region 6 sandwiching an insulating region 7 on the lower surface of the body 3. It is configured to be installed. For example, as shown in FIG. 3, the body portion 3 of the inspection jig 1 can be provided with the conductive region 6 on the lower surface in a stripe shape with the insulating region 7 interposed therebetween. As shown in FIG. 2, a plurality of conductive regions 8 are disposed on the upper surface opposite to the lower surface of the body 3 at positions corresponding to the respective conductive regions 6 on the lower surface. A plurality of insulating regions 9 are disposed at positions corresponding to the respective insulating regions 7 on the surface. The conductive region 8 disposed on the upper surface of the body portion 3 can also be formed in a stripe shape having the same shape as the conductive region 6 on the lower surface with the insulating insulating region 9 interposed therebetween.

  The formation pitch of the conductive region 6 on the lower surface of the body 3 of the inspection jig 1 can be determined according to the structure of the electrode of the touch panel to be inspected and the position detection resolution. Then, by making the formation pitch of the conductive regions 6 smaller, it is possible to perform a touch operation on the touch panel at a finer pitch. Specifically, it is preferable that the width of the conductive region 6 in the longitudinal direction of the body portion 3 is 0.2 mm to 1 mm, and the width of the insulating region 7 is 0.8 mm to 4 mm. In that case, the formation pitch of the conductive regions 8 on the upper surface of the body 3 can be made the same. Similarly, it is preferable that the longitudinal width of the body portion 3 of the conductive region 8 on the upper surface is similarly 0.2 mm to 1 mm, and the width of the insulating region 9 is 0.8 mm to 4 mm.

  The conductive region 6 disposed on the lower surface of the body 3 and the conductive region 8 disposed on the upper surface are both formed of a metal material such as gold, silver, copper, aluminum, molybdenum, or an alloy thereof. Is possible. Alternatively, a conductive inorganic material such as ITO (Indium Tin Oxide) or an organic material such as a conductive polymer film can be used. And in the trunk | drum 3, the column shape which comprises the trunk | drum 3 is manufactured from insulating materials, such as glass material, a timber, a rubber material, and a resin material as mentioned above, The lower surface and upper surface of the columnar member are manufactured. A film-like conductive region 6 and a conductive region 8 can be formed in each. By doing so, in the trunk | drum 3, it is possible to arrange | position the stripe-shaped electroconductive area | region 6 and the electroconductive area | region 8, respectively in the lower surface and upper surface.

  In the inspection jig 1, the conductive region 6 disposed on the lower surface of the trunk portion 3 is electrically connected to the conductive region 8 at a corresponding position on the upper surface. The plurality of conductive regions 6 arranged on the lower surface are insulated from each other by the insulating region 7 and are not electrically connected. Similarly, the plurality of conductive regions 8 arranged on the upper surface are also insulated by the insulating region 9 and are not electrically connected to each other.

  FIG. 5 is a diagram for explaining a connection method between the conductive regions of the body portion of the inspection jig according to the present embodiment.

  FIG. 5 is a schematic cross-sectional view in the longitudinal direction of a part of the body portion 3 for explaining the structure of the through hole 11.

  As shown in FIG. 5, the electrical connection between the conductive region 6 and the conductive region 8 of the trunk portion 3 can be made through a through hole 11 provided in the trunk portion 3. That is, as shown in FIG. 5, a through hole 11 that penetrates the body 3 is provided between the conductive region 6 on the lower surface of the body 3 and the conductive region 8 on the upper surface, and the conductive region is interposed through the through hole 11. It is possible to realize an electrical connection between 6 and the conductive region 8. In that case, for example, the conductive material 12 is disposed in the through hole 11, and electrical connection between the conductive region 6 and the conductive region 8 can be realized.

  As another example of the connection method between the conductive region 6 and the conductive region 8 of the body portion 3 of the inspection jig 1 according to the present embodiment, an insulating columnar member constituting the body portion 3 may It is also possible to use a method in which ring-shaped conductive members surrounding the portion are arranged at a predetermined pitch. In this example, the conductive region 6 and the conductive region 8 disposed on each of the lower surface and the upper surface of the body portion 3 are integrally formed in a ring shape, and the lower surface conductive region 6 and the upper surface conductive region are formed. 8 can be realized.

  Next, in the inspection jig 1 according to the present embodiment, it is possible to have a body portion having a structure different from that of the body portion 3 described above. It is also possible to realize an electrical connection between the conductive region on the lower surface and the conductive region on the upper surface, each of which has a stripe shape, in the body portion having the other structure.

  FIG. 6 is a schematic perspective view of a part of another configuration example of the body portion of the inspection jig according to the present embodiment. In addition, about the component which is common in the trunk | drum 3 of the inspection jig 1 demonstrated using FIGS. 2-4, the same code | symbol is used and the overlapping description is abbreviate | omitted.

  The body portion 13 having a structure different from the above-described structure of the inspection jig 1 according to the present embodiment is a block structure in which conductive conductors 14 and insulating insulators 15 are alternately stacked in the longitudinal direction. Have The conductor 14 constituting the body portion 13 preferably has a shape in which the two sides are parallel to each other, such as a square shape, a rectangular shape, a parallelogram shape, or a trapezoidal shape, in a direction perpendicular to the longitudinal direction. . Particularly, the cross-sectional shape of the conductor 14 is preferably a trapezoid, and the upper base constituting the upper surface of the body portion 13 is preferably a trapezoid whose shape is longer than the lower bottom constituting the lower surface. The conductor 14 can be a plate-like member having a square shape, a rectangular shape, a parallelogram shape, or a trapezoidal shape having a predetermined thickness. That is, in the body portion 13, the conductive region on the lower surface and the conductive region on the upper surface are integrated, and the insulating region on the lower surface and the insulating region on the upper surface are also integrated. And the trunk | drum 13 has the structure by which those one objectives are located in a line along the longitudinal direction of the said trunk | drum.

  Each conductor 14 constituting the body portion 13 has the same thickness in the longitudinal direction of the body portion 13. Similarly, the longitudinal thicknesses of the body portions 13 of the insulators 15 disposed between the conductors 14 are also the same. Accordingly, in the body portion 13, the conductors 14 are arranged at a predetermined pitch in the longitudinal direction. Further, the lower surfaces of the respective conductors 14 of the body portion 13 are configured to be flush with each other so as to form one lower surface of the body portion 13 by them. In this case, it is preferable that the upper surfaces of all the conductors 14 constituting the body portion 13 are configured to be flush with each other so as to form one upper surface of the body portion 13 by them. .

  The body 13 of the inspection jig 1 of the present embodiment having the above-described structure is, for example, a block in which conductive rubber to which carbon or the like is added as a conductor is used and alternately laminated with insulating rubber that does not contain a conductor. It is possible to configure using the body.

  Next, an inspection method using the inspection jig of the present embodiment will be described. The inspection method of the present embodiment is a touch panel inspection method that is performed using the inspection jig 1, and in particular, is an inspection method that performs the above-described linearity evaluation of the touch panel.

  FIG. 7 is a diagram schematically illustrating the touch panel inspection method of the present embodiment.

  FIG. 7 schematically shows the operation of the metal rod 20 that is a conductive member on the upper surface of the body 3 to be described later, as viewed from above.

  In the touch panel inspection method of the present embodiment, first, the body side edge of the head 2 of the inspection jig 1 is arranged in accordance with the edge of the touch panel 5 to be inspected, and the lower surface of the body 3 Is arranged on the operation surface of the touch panel 5. Then, using the metal rod 20 that is a conductive member, the tip of the metal rod 20 is brought into contact with the upper surface of the barrel of the inspection jig 1, and the longitudinal direction of the barrel 3, that is, from the tip with the head 2. Slide it towards the other tip. At this time, it is possible for a human to operate with the metal rod 20. In that case, the conductive region 8 on the upper surface of the body 3 in contact with the metal rod 20 is connected to the ground via the metal rod 20. The conductive region 6 on the lower surface of the body portion 3 is electrically connected to the conductive region 8 on the upper surface, and the conductive region 6 is also connected to the ground. As a result, in the touch panel 5 on which the inspection jig 1 is placed, a capacitance is formed between the electrode (not shown) and the conductive region 6 in a portion facing the conductive region 6 of the body portion 3 of the inspection jig 1. Will be.

  The formation of capacitance at such an electrode is detected by a control circuit of the touch panel 5 or the like. That is, the touch operation on the touch panel 5 is reproduced using the inspection jig 1 and the metal rod 20. And the coordinate information of the touch position of the touch operation of the metal rod 20 performed through the trunk | drum 3 of the inspection jig 1 is read, and a touch position is detected.

  In the linearity evaluation of the touch panel, it is important to accurately perform a number of touch operations in one linear direction when performing the evaluation. In the inspection method of the present embodiment, the inspection jig 1 is placed on the touch panel 5 to be inspected. Then, the metal rod 20 is slid from the tip with the head 2 toward the other tip while the tip is in contact with the upper surface of the body 3 of the inspection jig 1. In the body portion 3 of the inspection jig 1, as described above, the conductive regions 8 are arranged at a predetermined pitch in a stripe shape with the insulating region 9 interposed therebetween on the upper surface on which the metal rod 20 slides. Then, on the lower surface of the body portion 3 that is in contact with the operation surface of the touch panel 5, the conductive regions 6 are arranged at positions corresponding to the respective conductive regions 8 so as to have the same stripe shape with the insulating region 7 interposed therebetween. Electrical connection is realized between the conductive region 8 and the conductive region 6 opposed thereto. Therefore, according to the sliding operation on the upper surface of the body portion 3 of the metal rod 20, each conductive region 6 on the lower surface of the body portion 3 arranged in a stripe shape is sequentially connected to the ground and then cut. It will be.

  At this time, the shape and position of each conductive region 6 disposed on the lower surface of the body 3 of the inspection jig 1 are constant in the body 3. Therefore, a touch operation with a conductive member such as a human finger or a metal rod 20 is realized at a position facing the conductive region 6 of the body 3 on the operation surface on which the body 2 of the touch panel 5 is arranged. become. That is, a large number of touch operations on the touch panel 5 can be performed accurately and easily in a single linear direction along the body 3.

  FIG. 8 is a diagram schematically illustrating the effect of the touch panel inspection method of the present embodiment.

  As shown in FIG. 8, when the operation of sliding the metal rod 20 with respect to the body 3 of the inspection jig 1 is performed, the sliding motion fluctuates up and down, and the metal rod 20 is accurately slid in one linear direction. May not be possible. Even in such a case, by using the inspection jig 1 of the present embodiment, the multiple touch operations realized on the operation surface of the touch panel 5 are defined by the structure of the body portion 3 of the inspection jig 1. It becomes a certain operation. That is, by using the inspection jig 1 according to the present embodiment, a large number of touch operations on the touch panel 5 using the metal rod 20 are always highly reproducible in one linear direction. As a result, in the inspection method of the present embodiment, accurate linearity evaluation can be easily performed.

  FIG. 9 is a diagram illustrating an example of an inspection result obtained by a touch panel inspection method using the inspection jig according to the present embodiment.

  The touch panel having the same structure as the touch panel 5 to be inspected is a touch panel that has already been subjected to linearity evaluation using a conventional inspection apparatus. In this touch panel, an X coordinate corresponding to the left and right direction when installed and used, and a Y coordinate corresponding to the vertical direction perpendicular to it are set on the operation surface. The operation surface of the touch panel has a vertically long rectangular shape, the X axis is a coordinate axis parallel to the lower side and the upper side of the operation surface, and the Y axis is parallel to the left side and the right side which are sides extending in the longitudinal direction of the operation surface. Coordinate axes. The touch panel is configured such that the operation surface is equally divided into 352 in the X-axis direction and equally divided into 480 in the Y-axis direction so that the touch position can be detected with a resolution of 352 × 480. . Therefore, the touch position is read as a position coordinate including an X coordinate having a value of 1 to 352 and a Y coordinate having a value of 1 to 480, and the touch position is detected.

  Using this touch panel to be inspected, the inspection jig 1 was placed thereon by the method described above. At this time, the inspection jig 1 was placed using the head 2 of the inspection jig 1 so that the body 3 of the inspection jig 1 was arranged in parallel with the X-axis direction. Next, the inspector carried the metal rod 20 as a pseudo finger, and slid the upper surface of the trunk 3 from the head 2 side toward the other end. And the front-end | tip of the metal rod 20 which is an electroconductive member was made to touch the many electroconductive area | region 8 of an upper surface one by one. As a result, in the conductive region 6 on the lower surface corresponding to the conductive region 8 on the upper surface of the body 3 touched by the metal rod 20, connection to the ground was made. This operation is similar to the case where a number of touch operations are performed on the operation surface of the touch panel along a single linear direction parallel to the X-axis direction.

  And the touch position was detected in the part of the operation surface of a touch panel in the position which opposes the electroconductive area | region 6 of the trunk | drum 3 of the inspection jig 1. FIG. The detection result of the touch position by the touch panel was plotted on the graph as shown in FIG. From the plot results on the graph shown in FIG. 9, it was found that the maximum Y coordinate of this touch panel was 215, the minimum was 201, and the deviation value was 14 in many touch position detections. The linearity evaluation of the touch panel was performed using this deviation value (14), and the evaluation result was equivalent to the result of the linearity evaluation performed using a conventional inspection apparatus. Therefore, it was found that the touch panel inspection method of the present embodiment using the inspection jig of the present embodiment can perform accurate linearity evaluation simply and quickly. That is, the touch panel inspection method of the present embodiment using the inspection jig of the present embodiment can easily and quickly inspect the touch position detection accuracy of the touch panel.

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Inspection jig 2 Head 3, 13 Body 5 Touch panel 6, 8 Conductive area 7, 9 Insulating area 11 Through hole 12 Conductive material 14 Conductor 15 Insulator 20 Metal rod

Claims (5)

A T-shaped inspection jig having a head disposed at an edge portion of the touch panel and a trunk disposed on an operation surface of the touch panel,
A plurality of first conductive regions provided on a lower surface of the body portion that is in contact with the operation surface, and a plurality of second conductive regions provided on an upper surface opposite to the lower surface of the body portion, respectively. The first conductive regions are electrically connected to each other, and the first conductive regions are insulated from each other by a first insulating region, and the second conductive regions are insulated from each other by a second insulating region. Inspection jig. The first conductive region and the second conductive region are integral, and the first insulating region and the second insulating region are also a pair,
The inspection jig according to claim 1, wherein the one objective is alternately arranged along the longitudinal direction of the body portion. The first insulating region and the second insulating region integrally constitute an insulator,
The insulator is provided with a through hole penetrating one surface and the other surface,
The inspection jig according to claim 1, wherein the first conductive region and the second conductive region are electrically connected via the through hole.   The inspection jig according to claim 1 is disposed on the touch panel, a conductive member is brought into contact with the second conductive region, and a touch operation is performed on the touch panel. A touch panel inspection method, wherein the touch position detection accuracy of the touch panel is inspected.   The touch panel inspection method according to claim 4, wherein the touch operation is performed while sliding the conductive member in a longitudinal direction of the body portion.

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