JP2014049078A - Button for operating touch panel type screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means capable of operating an electronic device with a capacitance type touch panel without the need to prepare a glove dedicated to the operation, and solving the problem of stains attached to the touch panel.SOLUTION: A button for operating a touch panel type screen is formed of a cloth including conductive yarn, and an attachment and detachment functional layer laminated on a rear face of the cloth. The conductive yarn preferably has an electric resistance value of 1×10Ω/cm or less. The attachment and detachment functional layer is preferably formed of a foamed resin.

Description

  The present invention relates to a button used when operating a capacitive touch panel.

  In recent years, mobile phones and portable information terminals (tablet terminals) that are equipped with a touch panel in a display portion such as a liquid crystal display and can be operated with a finger have been widely used. Such touch panel type devices are often of a capacitance type. The electrostatic capacitance type is a device that operates by detecting a position by capturing a change in electrostatic capacitance at a touched location when an arbitrary location on the display surface is touched with a fingertip. In this type, in order to hold down an arbitrary portion of the display surface, it is necessary to be a finger or an electrostatic conductive material equivalent to the finger.

  Therefore, in the operation of the capacitance type touch panel type device, the device such as the touch panel type mobile phone cannot be operated in the state of wearing the glove in the hand because the glove is interposed. For example, gloves are often worn outdoors in the cold weather in winter or outdoors when the ultraviolet rays are strong, such as in summer, but cannot be operated while wearing gloves. It is necessary to wear gloves with missing parts.

  That is, since the general knitting yarns that make up gloves have physical properties close to those of insulators, the capacitance does not flow because the knitting yarns are not energized even when a predetermined part of the touch panel is pressed with a fingertip while wearing gloves. Not detected. Therefore, if a glove made only of cotton, wool, synthetic fiber, or the like that has been conventionally used is worn, the capacitance of the touch portion of the touch panel does not change, and as a result, the touch panel cannot be operated. Therefore, since it is impossible to operate the touch panel with the gloves on, it is cumbersome because it is necessary to repeat the removal of the gloves every time the operation is performed.

  As a method for solving such problems, only the tips of the thumb bag and the index finger bag are knitted with conductive fibers as gloves capable of operating a capacitive touch panel even when worn. In addition, there have been proposed gloves in which all the remaining portions are knitted with general knitting yarns (Patent Document 1, Patent Document 2). However, in addition to the existing gloves, the user has to purchase the gloves for operation, and the design characteristics due to being composed of conductive fibers and general knitting yarns are limited. The problem of not being able to reflect the taste of is inherent.

  In addition, since a screen such as a touch panel is usually operated by directly touching it with a finger or the like, there is another problem that dirt such as sebum accumulates on the screen.

JP 2008-81896 A Utility Model No. 3160211

  In view of the above situation, the problem of the present invention is that it is possible to operate an electronic device of a capacitive touch panel without preparing a dedicated glove for operation, and a means that can solve the problem of dirt adhering to the touch panel. Is to provide.

  The present invention can solve the above-mentioned problems, and is composed of a fabric including a conductive thread, and a detachable functional layer laminated on the back surface of the fabric. The button is a summary.

  Hereinafter, the present invention will be described in detail.

  The touch panel screen operation button of the present invention has a fabric including a conductive thread. By using a cloth including a conductive thread, when the operation button of the present invention is attached to the fingertip and the touch panel is touched while wearing gloves, the electrostatic capacity is detected and the operation can be performed. It is.

  Examples of the conductive yarn include those obtained by plating or vapor-depositing a metal such as copper, silver or nickel on the yarn surface, and those obtained by impregnating the yarn with a metal compound. Moreover, using a conductive fiber is mentioned as a fiber which comprises a thread | yarn. Examples of the conductive fiber include carbon black, metal (for example, copper and silver), a fiber containing a conductive material such as a metal oxide, a fiber obtained by plating or vapor-depositing the metal on the fiber surface, a metal fiber, Examples thereof include carbon fibers and fibers made of a conductive material such as fibers made of an ion conductive polymer.

The electrical resistance value of the conductive yarn used in the present invention is preferably 1 × 10 ⁹ Ω / cm or less. When the electric resistance value is 1 × 10 ⁹ Ω / cm or less, the conductivity is good, the change in capacitance is easy to detect, and the operability on the touch panel is good.

In the present invention, the electrical resistance value is measured as follows according to the AATCC76 method. That is, a conductive thread (here, when the thread is not composed of a plurality of fibers but is composed of a single fiber, one conductive fiber is measured, and the obtained value is electrically This is regarded as the electric resistance value of the sex yarn.) Is cut to about 15 cm in the length direction, and 10 samples are collected. Apply keratin cream to the surface of both ends of this sample, connect this surface part to a metal terminal, apply a 50V direct current with a sample measurement length of 10 cm, and measure the current value. Is calculated. The arithmetic average value of the calculated electric resistance values of 10 samples is used.
Electric resistance value = E / (I × L)
However, E: Voltage (V) I: Measurement current (A) L: Measurement length (cm)

The form of the fabric in this invention is not specifically limited, A woven fabric, a knitted fabric, a nonwoven fabric, etc. are mentioned.
The fabric may include non-conductive fibers and non-conductive yarns other than the above-described conductive yarns. In consideration of maintaining the function of the conductive yarn, the content of non-conductive fibers other than the conductive yarn is about 60% by mass at the most with respect to the total mass of the fabric. Examples of non-conductive fibers include synthetic fibers made of synthetic resins such as polyester, nylon, vinylon, and polyolefin, and cellulose fibers such as cotton, hemp, bamboo fibers, viscose rayon, cupra, and solvent-spun cellulose fibers. Moreover, in the synthetic fiber, the composite fiber which consists of 2 types of polymers may be sufficient.

  It is also preferable to employ a fiber having a wiping function as the fiber constituting the fabric. Accordingly, the operation button of the present invention can be added with a function of wiping off dirt such as sebum adhering to the touch panel, in addition to a role as a button for performing an operation function. As the fiber having a wiping function, an ultrafine fiber having a single yarn fineness of 1 dtex or less is preferable. The cross-sectional shape is preferably an irregular cross-section having a wedge shape or a triangular shape. Considering that such a wiping function is added, it is preferable that the fiber having the wiping function is contained in an amount of 20% by mass or more based on the mass of the entire fabric.

  For example, when forming the woven or knitted fabric, the conductive yarn and the non-conductive fiber are used as the form in which the conductive yarn and the non-conductive fiber are included, respectively. There is a method in which the yarns are woven and knitted alone. Further, at the stage of yarn processing, a method of obtaining a composite processed yarn by twisting, blending, etc. the conductive fiber and non-conductive fiber, and forming a woven or knitted fabric using the composite processed yarn, etc. Can be used. When the fabric is a non-woven fabric, a non-woven fabric is formed by using a web in which conductive fibers and non-conductive fibers are mixed, or a non-woven fabric made of non-conductive fibers is stitched using a conductive yarn. And sewing a conductive thread on a non-woven fabric made of non-conductive fibers. The structure of the woven or knitted fabric is not particularly limited. In the case of a woven fabric, for example, plain weave, twill, satin weave, woven fabric, etc. can be adopted. In the case of knitted fabric, for example, round knitting, weft knitting, warp knitting, etc. Can be adopted.

  In the present invention, the attachment / detachment functional layer is laminated on the back surface of the fabric including the conductive yarn. The attachment / detachment functional layer can be directly attached to and pasted on the object, and can be easily removed from the attached state. Although not limited, a resin layer having adhesiveness or adsorptivity can be preferably used. When a resin layer having adhesiveness or adsorptivity is used, there is no fear of damaging the object. A publicly known resin layer having such a degree of adhesiveness or adsorbability that it can be attached to an object can be used, and examples thereof include a layer made of foamed acrylic resin or foamed polyurethane resin. The foamed acrylic resin layer and the foamed polyurethane resin layer can be obtained by applying an acrylic resin or polyurethane resin containing a foaming agent to a fabric, and heating the applied material to foam the foaming agent. The thickness of the attachment / detachment functional layer is preferably about 10 to 500 μm in consideration of electrical conductivity. Further, the resin constituting the attachment / detachment functional layer may contain a small amount of a material for improving electrical conductivity, that is, a conductive material such as carbon black, a metal such as copper or silver, or a metal oxide.

  The touch panel type screen operation button having a detachable functional layer on the back surface of the fabric including the conductive thread described above is attached to the fingertip wearing a glove through the detachable functional layer when necessary. Once the screen operation is completed, the touch panel screen operation button attached to the fingertip may be peeled off. The peeled operation button can be attached to the end of the terminal front side, the back or side of the terminal, etc., and held integrally with the terminal, and it can be peeled off and attached to the fingertip when necessary. Can be repeated. Since the touch panel type screen operation button of the present invention has an attachment / detachment functional layer, it can be easily attached to and detached from the fingertip while wearing gloves as necessary, which is very convenient.

  The size of the touch panel type screen operation button of the present invention may be set as appropriate, and is preferably about 1 cm in diameter in consideration of being attached to a fingertip. In addition, the shape of the button for touch panel type screen operation may be set as appropriate, and is not limited to a circle, but may be determined according to preference, such as a square or a triangle, or an alphabetic character type, a star shape, a flower shape, or a heart shape. . The touch panel screen operation button of the present invention is particularly suitable for use in a mobile device such as a mobile phone. In addition, when operating a touch panel type car navigation system mounted on a car, it is possible to operate while wearing gloves, which is preferable.

  The present invention can be easily attached to and detached from an existing glove, and the electrostatic touch panel electronic device can be operated while wearing the existing glove. Further, dirt, water droplets, etc. adhering to the touch panel can be additionally wiped off, and a touch panel screen operation button based on a completely new concept can be provided.

Next, the present invention will be specifically described based on examples, but the present invention is not limited to only these examples.
Further, the electrical resistance value of the conductive yarn is measured by the method described above.

Example 1
Melt spun yarn (cotton count 40 /-, electrical resistance value 2.6 × 10 ⁶ Ω / cm) made of conductive fiber obtained by plating copper on the surface of acrylic short fiber and polyethylene terephthalate Two yarns, a multi-filament yarn (122 dtex / 384 filament) made of ultra-fine deformed filaments having a substantially equilateral triangular cross-section obtained by spinning, and a yarn subjected to false twisting are aligned and supplied to a circular knitting machine. Knitting was performed by smooth knitting to obtain a knitted fabric having a mass ratio of 55/45 of conductive yarn and non-conductive yarn.

  Next, an acrylic resin containing a foaming agent was applied to one side of the back surface of the obtained knitted fabric, and a foamed acrylic resin layer (attachable / detachable functional layer) having adhesiveness and adsorptivity was obtained by heat foaming. The thickness of the attachment / detachment functional layer was 150 μm. The sheet obtained by laminating the fabric thus obtained and the attachment / detachment function layer was punched out with a Thomson blade so as to have a circular shape with a diameter of 10 mm to obtain a touch panel type screen operation button of the present invention.

Example 2
Polyethylene terephthalate, which is an incompatible polymer, and nylon 6 (melting point: 225 ° C., relative viscosity: 2.55) are alternately arranged radially and melt-spun using a spinneret having a split-fiber type composite cross section. Using a multifilament yarn (80 dtex / 36 filament) as the warp of the woven fabric, using the spun yarn having conductivity as used in Example 1 as the weft, using a water jet loom, the warp density is 253 yarns / 2.54 cm, Five satin weaving fabrics having a weft density of 88 / 2.54 cm were woven to obtain a weaving fabric having a mass ratio of conductive yarn to non-conductive yarn of 40/60.

  Next, an acrylic resin containing a foaming agent was applied to one side of the back surface of the obtained knitted fabric, and a foamed acrylic resin layer (attachable / detachable functional layer) having adhesiveness and adsorptivity was obtained by heat foaming. The thickness of the attachment / detachment functional layer was 300 μm. The sheet obtained by laminating the fabric thus obtained and the attachment / detachment function layer was punched out with a Thomson blade so as to have a circular shape with a diameter of 10 mm to obtain a touch panel type screen operation button of the present invention.

The touch panel type screen operation buttons obtained in Example 1 and Example 2 were easy to stick on existing gloves, the operability of the touch panel was good, and accumulation of dirt and the like could be suppressed.

Claims (4)

  A touch panel type screen operation button comprising a fabric including a conductive thread and a removable functional layer laminated on the back surface of the fabric. 2. The touch panel screen operation button according to claim 1, wherein the electric resistance value of the conductive yarn is 1 × 10 ⁹ Ω / cm or less.   The touch panel screen operation button according to claim 1 or 2, wherein the detachable functional layer is made of foamed resin. The touch panel type screen operation according to any one of claims 1 to 3, wherein the fabric includes a non-conductive yarn, and the non-conductive yarn is constituted by a plurality of ultrafine fibers. button.