WO2012124280A1 - Touch pen for capacitive touch panel - Google Patents

Abstract

A touch pen having a structure whereby the outside of a pen core shaft section (3), said section being made from a conductive material and being electrically conductive with a pen core tip section (2) made from a conductive material, is covered by a pen main body section (11) made from an insulating material. It is desirable that the structure between the pen main body section (11) and the pen core shaft section (3) has no air layer gaps having a low dielectric constant, in order to preserve a capacitive bond with the holding hand of the touch pen user. In addition, at least the section in the range that the holding hand touches must have the pen core shaft section (3) inside the pen main body section (11), due to the capacitive bonding between the holding hand of the touch pen user and the pen core shaft section (3).

Description

Touch pen for capacitive touch panel

The present invention relates to a touch pen for a capacitive touch panel such as a mobile phone, a mobile terminal, and an electronic device.

In recent years, by touching electronic devices such as mobile phones, music players, game consoles, mobile terminals, information terminals, personal computers, and televisions, you can input coordinates, select key menus, switch display images, scroll, rotate, and zoom. A touch screen integrated with a dedicated input touch panel, a touch pad, or a display capable of instructing reduction is employed.

It is also suitable for finer and more accurate input selection operations than letters, mice, trackballs, etc., and for writing input of characters, signs, illustrations, etc., and a touch pen that does not smudge the touch screen screen integrated with the display with fingerprints Are widely used in game consoles, portable terminals, and information terminals.

On the other hand, in cellular phones, portable terminals, and music players, light input pressure operation with a finger is preferred due to the coordinated operation with the display image on the touch screen integrated with the display. Of the membrane system, electromagnetic induction system, and electrostatic capacity system, the electrostatic capacity system is often used.

Capacitive touch panels use touch pens that are suitable for finer and more accurate input operations, writing characters, signs, illustrations, etc. with the same light input pressure as fingers.

In the capacitive method, a touch pen made of a material that has the same conductivity as the user's finger with respect to the touch panel, and a pen body made of a conductive material that is gripped by the user's hand and the body There has been proposed one provided with a pen core tip portion made of a conductive material which is electrically connected to the first electrode. For example, the tip of the pen core may be made of a composite material in which conductive carbon powder or carbon fiber, metal powder or metal fiber is blended with rubber.

Conventionally, as this type of touch pen, for example, there is one described in Patent Document 1.
7 and 8 show a conventional capacitive touch panel touch pen described in Patent Document 1. FIG.

7 and 8, the pen main body 1 and the pen core tip 2 are made of a conductive material, and the pen core tip 2 is made of conductive carbon powder, metal powder, metal fiber or the like on rubber. It is composed of a blended composite material.

In addition, as described in Patent Document 2, an example of a touch pen including a conductive portion that is electrically connected to a pen core tip portion made of a conductive material on the outer periphery of a pen body portion gripped by a user's hand is provided. is there.

Also, as described in Patent Document 3, there is an example of a touch pen including a pen core tip formed in a brush shape by a plurality of conductive fibers.

Japanese Unexamined Patent Publication No. 10-161895 Japanese Patent Laid-Open No. 10-171580 Japanese Unexamined Patent Publication No. 2010-39610

However, in the conventional configuration, the touch pen for a capacitive touch panel must include a conductive portion on the outer periphery of the pen body or the pen body, and the conductive portion is made of metal, conductive fiber, or metal. Since powder, metal fiber, carbon powder, rubber or resin containing carbon fiber is used, there is a problem that the color, material arrangement, and design of a free appearance cannot be performed on the pen body.
Also, the pen body part made of conductive material or the conduction part provided on the outer periphery of the pen body part is a metal terminal of an external terminal connector of an electronic device, a metal terminal of a charging connector, a metal terminal of a power plug, a metal terminal of a power outlet Inadvertently touching, etc., there was a problem that caused a short circuit and failure of electronic equipment.

The present invention has been made to solve the above-described problems, and realizes a touch pen for a capacitive touch panel having a free appearance color, material arrangement, and design, and the main body of the touch pen is an external connector of an electronic device. Use a secure touch pen for capacitive touch panels that will not cause a short circuit or malfunction of electronic devices even if you inadvertently touch the metal terminals of the connector, the metal terminal of the charging connector, the metal terminal of the power plug, or the metal terminal of the power outlet. It aims to be realized.

In order to solve the above-described conventional problems, the touch pen for a capacitive touch panel according to the present invention is an electrically conductive pen tip and a pen core shaft made of a conductive material, and an electrically conductive cover that covers the outer periphery of the pen core shaft. In the pen body part made of an insulating material, which is made of a non-insulating material pen body part and overlaps the outer periphery of the pen core shaft part and has no gap, the pen body part of the entire length of the pen body part touches at least the user's touch pen handle. The inside of the range is configured to be occupied by a pen core shaft made of a conductive material.

When the tip of the touch pen of the touch pen of the present invention is brought into contact with the surface of the capacitive touch panel, the detection electrode in the touch panel and the tip of the pen lead perform the first capacitive coupling, The pen core shaft portion that is electrically conductive sandwiches the pen body portion made of an insulating material that covers the outer periphery of the pen core shaft portion, and by performing the second capacitive coupling with the handle of the user's touch pen, Touch detection of the touch pen on the touch panel is performed.

The pen body material that covers the outer periphery of the pen core shaft can be freely designed in terms of color, material layout, and design, and uses inexpensive and general insulating materials such as synthetic resins with high dielectric strength. If the touch pen body is inadvertently contacted with the metal terminal of the external connector of the electronic device, the metal terminal of the charging connector, the metal terminal of the power plug, the metal terminal of the power outlet, etc., it will not cause a short circuit or malfunction of the electronic device. A safe touch pen for capacitive touch panel can be realized.

According to the present invention, a touch pen for a capacitive touch panel with a free appearance color, material arrangement, and design is realized, and the touch pen main body is a metal terminal of an external connector of an electronic device, a metal terminal of a charging connector, Capacitive touch panel touch pens that do not cause a short circuit or failure of electronic equipment even if they are inadvertently contacted with a metal terminal of a power plug or a metal terminal of a power outlet can be realized.

Sectional drawing of the touch pen for electrostatic capacitance type touch panels of Embodiment 1 of this invention The figure which shows the cross section and use condition of the touch pen for electrostatic capacitance type touch panels of Embodiment 1 of this invention. Sectional drawing of the touch pen for electrostatic capacitance type touch panels of Embodiment 2 of this invention Sectional drawing of the touch pen for electrostatic capacitance type touch panels of Embodiment 2 of this invention Sectional drawing of the touch pen for capacitive touch panels of Embodiment 3 of this invention Sectional drawing of the touch pen for electrostatic capacitance type touch panels of Embodiment 4 of this invention External view of conventional touch panel for capacitive touch panel Partial sectional view of a conventional touch pen for capacitive touch panel

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a capacitive touch panel touch pen according to Embodiment 1 of the present invention. It has a structure in which the outside of the pen core shaft portion 3 made of a conductive material that is electrically connected to the pen core tip portion 2 made of a conductive material is covered with a pen body portion 11 made of an insulating material.
The pen core tip 2 is made to include all or part of metal, conductive fiber, metal fiber, metal powder, carbon powder, rubber containing carbon fiber, or resin. On the surface of the tip 2, there is a lubricating film that does not easily damage the surface of the touch panel, or a buffer film that reduces the sound of collision between the touch panel and the tip of the pen core when writing, or a friction-resistant film that gives a light resistance when writing It may be provided. These coatings may be an insulating material of 1 mm or less that does not affect the capacitive coupling between the touch panel and the tip of the pen core, and may be colored in consideration of the appearance design of the touch pen.

The pen core tip portion 2 and the pen core shaft portion 3 may be relayed by a metal screw, a metal shaft, or a metal spring, in addition to a fitting or contact structure that is electrically conductive. The tip portion 2 and the pen core shaft portion 3 may be molded as an integral product with the same material.
The thickness of the pen main body 11 is 3 mm or less with respect to the radial direction of the pen core shaft 3, thereby capacitively coupling between the handle of the touch pen user and the pen core shaft 3, Touch detection on the touch panel can be performed.
In order to maintain the capacitive coupling with the handle of the touch pen user, it is desirable to have a structure in which there is no air layer gap having a low relative dielectric constant between the pen body 11 and the pen core shaft 3. .
In addition, since the capacitive coupling is performed between the handle of the touch pen user and the pen core shaft portion 3, the pen core shaft portion 3 is present in the pen body portion 11 at least in the range where the hand touches. It is necessary to be.
The pen body 11, the pen core tip 2, or the pen core shaft 3 may not be cylindrical, but may be a polygonal column such as a triangular column or a hexagonal column.

FIG. 2 is a diagram showing a cross section and a usage state of the touch pen for a capacitive touch panel according to Embodiment 1 of the present invention. When the pen core tip 2 made of a conductive material is brought into contact with the surface of the capacitive touch panel, the touch panel P and the pen core tip 2 perform first capacitive coupling, and the pen core tip 2 The pen core shaft portion 3 that is electrically conducting performs a second capacitive coupling with the handle H of the touch pen user with the pen body portion 11 made of an insulating material covering the outer periphery of the pen core shaft portion 3 interposed therebetween. Thus, contact detection of the touch pen with the touch panel is performed.
The outside of the pen core shaft portion 3 made of a conductive material is covered with a pen main body portion 11 made of an insulating material without a gap, and the pen core shaft portion made of a conductive material is at least touched by the entire length of the pen main body portion 11. 3 is occupied.

In order to maintain the capacitive coupling with the handle of the touch pen user, it is desirable that the pen body 11 and the pen core shaft 3 have a structure having no air space with a low relative dielectric constant.

(Embodiment 2)
3 and 4 are cross-sectional views of the capacitive touch panel touch pen according to the second embodiment of the present invention. The description of the configuration that has already been described is omitted.
3 and 4, not only the outside of the pen core shaft portion 3 made of a conductive material but also the taper portion or the curved portion excluding the pen core tip portion 2 is covered with a pen main body portion 12 made of an insulating material.
The area where the pen tip 2 limited to the metal color, black or gray is exposed from the pen main body 12 can be reduced, and a free appearance design can be realized, and the touch pen is a metal of the external connector of the electronic device. Even if the terminal, the metal terminal of the charging connector, the metal terminal of the power plug, the metal terminal of the power outlet, etc. are inadvertently touched, the cause of short circuit and failure of the electronic device can be reduced.

(Embodiment 3)
FIG. 5 is a cross-sectional view of the capacitive touch panel touch pen according to Embodiment 3 of the present invention. The description of the configuration that has already been described is omitted.
The outside of the pen core shaft portion 14 made of a conductive material is covered with a pen main body portion 11 made of an insulating material, and made of an insulating material housed in a hollow portion provided at the center of the pen core shaft portion 14 made of a conductive material. The pen main body expansion / contraction part 15 and the pen core expansion / contraction part 16 made of a conductive material in the pen main body expansion / contraction part 15, and the pen core expansion / contraction part 16 made of a conductive material is externally attached when the touch pen expands and contracts. The structure is not exposed to

When the touch pen is extended to a length that is easy to use at the time of use, the pen core shaft expansion / contraction part 16 made of a conductive material is covered with the pen body expansion / contraction part 15 made of an insulating material and is not exposed to the appearance. In addition to realizing a free appearance design, the touch pen is short-circuited even if it touches the metal terminal of the external connector of the electronic device, the metal terminal of the connector for charging, the metal terminal of the power plug, the metal terminal of the power outlet, etc. The cause of failure of electronic equipment can be reduced.
A pen core shaft expansion contact portion 17 made of a conductive material for electrically connecting the pen core shaft portion 14 made of a conductive material and the pen core shaft expansion / contraction portion 16 made of a conductive material is provided.
When the touch pen expands and contracts, the pen core shaft expansion / contraction contact portion 17 slides while contacting the inside of the hollow portion provided in the center of the pen core shaft portion 14, and the pen core shaft portion 14 made of a conductive material and the conductive material are slid. The made pen core shaft expansion / contraction part 16 is always electrically connected.
The pen core shaft expansion / contraction portion 16 and the pen core shaft expansion / contraction contact portion 17 may be relayed by a metal screw or a metal shaft, in addition to the electrically conductive fitting or contact structure, and the pen core shaft The expansion / contraction part 16 and the pen core shaft expansion / contraction contact part 17 may be molded as a single product using the same material.
The pen core tip portion 2 and the pen core shaft portion 14 may be relayed by a metal screw, a metal shaft, or a metal spring, in addition to a fitting or contact structure that is electrically conductive. The tip portion 2 and the pen core shaft portion 14 may be molded as an integral product with the same material.

When the touch pen is shortened to be compact when being carried and the touch pen is extended to a length that is easy to use, the pen core shaft portion 14 and the pen core shaft expansion / contraction portion 16 made of conductive material are exposed from the outer peripheral surface of the pen body portion 11. This eliminates the need for a free external design, and the stylus touches the metal terminal of the external connector of the electronic device, the metal terminal of the charging connector, the metal terminal of the power plug, the metal terminal of the power outlet, etc. However, it is possible to reduce the cause of short circuit and electronic device failure.

(Embodiment 4)
FIG. 6 is a cross-sectional view of a capacitive touch panel touch pen according to Embodiment 4 of the present invention. The description of the configuration that has already been described is omitted.
The outside of the pen core shaft portion 14 made of a conductive material is covered with a pen main body portion 11 made of an insulating material, and made of an insulating material housed in a hollow portion provided at the center of the pen core shaft portion 14 made of a conductive material. The pen main body expansion / contraction part 15 and the pen core expansion / contraction part 16 made of a conductive material in the pen main body expansion / contraction part 15, and the pen core expansion / contraction part 16 made of a conductive material is externally attached when the touch pen expands and contracts. The structure is not exposed to

When the touch pen is extended to a length that is easy to use at the time of use, the pen core shaft expansion / contraction part 16 made of a conductive material is covered with the pen body expansion / contraction part 15 made of an insulating material and is not exposed to the appearance. In addition to realizing a free appearance design, the touch pen is short-circuited even if it touches the metal terminal of the external connector of the electronic device, the metal terminal of the connector for charging, the metal terminal of the power plug, the metal terminal of the power outlet, etc. The cause of failure of electronic equipment can be reduced.

It has a spring 18 made of a conductive material for electrically connecting the pen core shaft portion 14 made of a conductive material and the pen core shaft extension / contraction portion 16 made of a conductive material.
When the touch pen expands and contracts, the spring 18 made of a conductive material always electrically connects the pen core shaft portion 14 made of a conductive material and the pen core shaft expandable portion 16 made of a conductive material.
The pen core tip portion 2 and the pen core shaft portion 14 may be relayed by a metal screw, a metal shaft, or a metal spring, in addition to a fitting or contact structure that is electrically conductive. The tip portion 2 and the pen core shaft portion 14 may be molded as an integral product with the same material.

When the touch pen is shortened to be compact when being carried and the touch pen is extended to a length that is easy to use, the pen core shaft portion 14 and the pen core shaft expansion / contraction portion 16 made of conductive material are exposed from the outer peripheral surface of the pen body portion 11. This eliminates the need for a free external design, and the stylus touches the metal terminal of the external connector of the electronic device, the metal terminal of the charging connector, the metal terminal of the power plug, the metal terminal of the power outlet, etc. However, it is possible to reduce the cause of short circuit and electronic device failure.
The spring 18 may have a function of assisting the force applied by the user when the touch pen is extended or contracted.

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

This application is based on a Japanese patent application filed on March 16, 2011 (Japanese Patent Application No. 2011-057490), the contents of which are incorporated herein by reference.

The present invention can be used for touch pens for capacitive touch panels of electronic devices such as mobile phones, music players, game machines, mobile terminals, information terminals, personal computers, televisions, car navigation systems and the like.

DESCRIPTION OF SYMBOLS 1, 11, 12 Pen main-body part 2 Pen core front-end | tip part 3, 14 Pen core axial part 15 Pen main body expansion-contraction part 16 Pen core-axis expansion-contraction part 17 Pen core-axis expansion-contraction contact part 18 Spring H Touch pen user's handle P Touch panel

Claims (4)

Cover the outside of the pen core shaft made of conductive material with a pen main body portion made of an insulating material without a gap, and the pen core shaft made of the conductive material is at least touched by the handle of the entire length of the pen main body portion. Touch pen for capacitive touch panel with occupied configuration. A touch pen for capacitive touch panel with the pen core shaft made of conductive material covered with the pen body made of insulating material. ¡Capacitive touch panel touch pen in which the outside of the pen core shaft made of a conductive material and the tapered portion excluding the tip of the pen core are covered with a pen body made of an insulating material. A pen body expansion / contraction part that covers the outside of the pen core shaft part made of a conductive material with a pen body part made of an insulating material and is accommodated in a hollow portion provided at the center of the pen core shaft part, and the pen body expansion / contraction part A touch pen for a capacitive touch panel, having a structure that does not expose the pen core shaft portion made of conductive material and the pen core shaft stretchable portion to the outside even when the pen core shaft stretchable portion is extended and contracted.

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