JP2023072855A - touch pen - Google Patents

Abstract

To provide a touch pen that can increase the accuracy of inputting in a touch panel.SOLUTION: A conductive disc 21 is provided in an edge of a pen 20 of a touch panel 1. The outer diameter of the disc 21 may be 8.7 mm or larger.SELECTED DRAWING: Figure 1

Description

There is an application for exception to loss of novelty

The present invention relates to a touch pen that can be used for inputting information to touch panel electronic devices such as tablet terminals, PDAs, and smartphones. A touch pen is sometimes called a stylus pen, a multi-function writing instrument, or the like.

2. Description of the Related Art In recent years, the spread of touch panel electronic devices is progressing. For example, in the Giga School concept of the Ministry of Education, Culture, Sports, Science and Technology, it is being considered to conduct classes using touch panel type electronic devices distributed to each student.

In a touch panel type electronic device, various input operations can be performed by touching the touch panel with a fingertip. Also, if a stylus with a conductive core provided at the tip of the pen is used, it is possible to make an input with the feeling of a normal writing instrument and/or to detect an input with higher accuracy than with a fingertip.

JP 2014-102531 A

For example, in order to use a touch panel in school classes, it is desired to have a certain degree of high detection accuracy (or recognition accuracy/input accuracy/resolution) for inputting characters, diagrams, and the like. However, depending on the specifications of the touch panel, there are cases where sufficient detection accuracy cannot be obtained even if a touch pen is used. This problem is actually occurring in touch panels currently used in schools.

The present invention provides a touch pen that can improve the detection accuracy of a touch panel.

The present application discloses a capacitive stylus having a conductive disc at the tip of the stylus.

1 shows a stylus 1 of one embodiment of the present invention. (a) is the touch pen 1 with the pen tip 20 inserted. (b) is the touch pen 1 with the pen tip 20 removed. (a) shows the pen tip 20 from the barrel 10 side. (b) shows the pen tip 20 from the tip side. 2 shows a side cross-sectional view of nib 20. FIG. (a) shows a pen tip 20 with a vertical axis 22, and (b) shows a pen tip 20 with an inclined axis 22. FIG. A particularly preferred nib 20 is shown.

FIG. 1 shows a touch pen 1 of one embodiment of the invention. The stylus 1 is preferably a capacitive (or electrostatic) stylus. The touch pen 1 has a body 10 and a pen tip 20. - 特許庁As shown, the stylus 1 is preferably shaped like a ballpoint pen. The trunk portion 10 is preferably made of metal such as aluminum. Body 10 is preferably electrically conductive. The outer circumference of the barrel 10 may have an insulating coating.

FIG. 2 shows a nib 20. FIG. The nib 20 has an electrically conductive disc 21 . The contact surface 21a on the front end side of the disc 21 is preferably flat. Experiments by the inventors have confirmed that the provision of such a disk 21 significantly improves the detection accuracy of a touch panel (not shown). The shape of the disc 21 is preferably disk-like. Other shapes are also possible.

The inventors have experimentally confirmed that the use of a disc 21 with an outer diameter of 8.7 mm or more significantly improves the detection accuracy of the touch panel. It was experimentally confirmed that the use of the disk 21 with an outer diameter of 9 mm significantly improves the detection accuracy compared to the disk 21 with an outer diameter of 8.5 mm. The outer diameter of the disk 21 is preferably 8.5 mm or more, more preferably 8.7 mm or more, and particularly preferably 9 mm or more. From the viewpoint of visibility, 10 mm or less is good, and 9.5 mm or less is even better.

The thickness of the disk 21 is preferably 0.2-0.5 mm.

The disk 21 is preferably made of a conductive metal such as copper, brass or aluminum. Gold-plated free-cutting brass is particularly good.

The pen tip 20 has a shaft 22 and a core tip 23, and the tip of the barrel 10 preferably has an opening 11 (FIG. 1(b)) into which the shaft 22 can be inserted. The part 10 becomes removable (the pen tip 20 becomes replaceable).

The shaft 22 is preferably made of metal such as copper, brass or aluminum. Chrome-plated free-cutting brass is particularly good. Shaft 22 is preferably electrically conductive.

The tip 23 connects the shaft 22 to the disk 21 so as to be tiltable, as shown in FIGS. 3(a) and 3(b). Since it is tiltable, the touch pen 1 can be tilted while the contact surface 21a of the disk 21 is in parallel contact with the touch panel. Preferably, the body 10 and the disk 21 are electrically (at least electrostatically) connected via the shaft 22 (and the tip 23). Thereby, the capacitance of the fingers is transmitted from the body 10 to the disk 21, and detection by the touch panel becomes possible.

As shown in FIGS. 2 and 3, the disk 21 is provided with a recess and a through hole, the shaft 22 is a hollow cylinder, and large diameter portions 23a and 23b are provided above and below the core tip 23 for locking to prevent the disk 21 from coming off. The structure in which the shaft 22 penetrates facilitates and/or strengthens the connection.

FIG. 4 shows a particularly preferred nib 20 . The shaft 22 is a chrome-plated free-cutting brass hollow cylinder. In order to make the inclination of the shaft 22 smooth, the contact portion between the upper surface of the disc 21 and the shaft 22 has a camber rolling structure. The contact surface 21a of the disk 21 is preferably protected with a leading edge film 24 made of PET. Although the tip film 24 is electrically conductive, it is also contemplated that it be non-conductive. For reference, preferred dimensions (mm) are shown in the figure. A range of ±20%, particularly ±10% of the dimensions in the drawing is preferable.

The core tip 23 can also have a signal input function to the touch panel. The core tip 23 is preferably made of a conductive elastic material such as silicone rubber. A ball joint or the like may be used.

According to the touch pen 1 of the present invention, it is possible to remarkably improve the detection accuracy of the touch panel. Even with a low-spec touch panel, sufficient detection accuracy can be obtained for use in school classes and the like. The detection accuracy can be further improved by using it for a normal or high-spec touch panel.

The touch pen 1 preferably has a cap 30 that protects the pen tip 20 when not in use. The cap 30 is preferably attachable to the rear end portion 12 of the body portion 10 during use.

The dimensions, shapes, arrangements, numbers, materials, etc. of the touch pen 1 and its elements described in the above embodiment are examples, and other modes are also possible. The touch pen of the present invention is not limited by the type/specification of the touch panel.

DESCRIPTION OF SYMBOLS 1... Touch pen 10... Body part 11... Opening 12... Rear end part 20... Pen tip 21... Disc 21a... Contact surface 22... Shaft 23... Core tip 23a, 23b... Large diameter portion 24... Tip film 30... Cap

Claims (3)

A stylus that is a capacitive stylus and has a conductive disc at the tip of the stylus. 2. The stylus of claim 1, wherein the disk has an outer diameter of 8.7 mm or more. 2. The touch pen according to claim 1, wherein the distal end side of said disk is a flat contact surface.

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