KR200495951Y1 - the pen-tip module device for a optical digital pen - Google Patents

Abstract

The present invention relates to a pen tip module device for improving the movement trajectory recognition rate of an optical electronic pen. In particular, the present invention improves the convergence path of IR light reflected from the panel by making the color of the pen tip white for good reflection of the infrared IR light source, and allows the user to tilt the pen at various angles while using the optical electronic pen. It relates to a technique for greatly improving the degree of tilt freedom compared to the prior art.

Description

{the pen-tip module device for a optical digital pen}

The present invention relates to a pen tip module device for improving the movement trajectory recognition rate of an optical electronic pen.

More specifically, the present invention relates to a technique for improving the degree of convergence of IR light reflected after being irradiated on a panel to an IR light receiving member. In particular, it is a technology that lowers the external divergence of IR reflected from the panel by improving the convergence path of IR reflected from the panel.

In addition, the present invention relates to a technique for greatly improving the degree of tilting freedom that a user can tilt at various angles in the process of using the optical electronic pen compared to the prior art.

In general, recently, the electronic pen function has become essential in premium products such as tablet PCs, laptop computers, and smartphones, and the technology of various and convenient writing apps such as Notability and Good Note has been greatly developed, and the demand for pen solutions for IT products is increasing. is increasing explosively.

The market launch of premium products that maximize portability, such as foldable, slideable, and foldable displays, from flat panel displays centered on simple viewing for IT displays are also in full swing.

Against this background, efforts are being made to develop an optical electronic pen as a pen solution for display. The optical electronic pen only needs to form a dot pattern inside the display panel or form a dot pattern-type position code with a transparent film, etc., so even if the display size is increased, there is an advantage in that there is little deterioration in pen characteristics or an increase in manufacturing cost.

However, when writing is performed on a display panel, infrared rays are irradiated to the display panel in order to detect the movement trajectory, and the movement trajectory of the optical electronic pen is determined by analyzing the reflected light of the infrared rays. There is a problem in that the trajectory recognition rate is lowered.

The present invention has been proposed in consideration of the above points, and an object of the present invention is to provide a pen tip module device for an optical electronic pen capable of improving the recognition rate of the movement trajectory of the optical electronic pen.

In addition, an object of the present invention is to provide a pen tip module device for an optical electronic pen capable of improving the degree of convergence of IR light irradiated and reflected on a panel to an IR light receiving member. In particular, it is to provide a technique for reducing external divergence of IR reflected from the panel by improving the convergence path of IR reflected from the panel.

In addition, an object of the present invention is to provide a pen tip module device for an optical electronic pen that can greatly improve the degree of tilt freedom that a user can tilt to various angles in the process of using the optical electronic pen compared to the prior art.

In order to achieve the above object, the present invention has a pen body member 110 constituting the body of the electronic pen, an IR light emitting member that emits light to the panel surface for location code recognition, and a light emitting device that receives reflected light reflected from the panel surface. Provided is a pen tip module device for an optical electronic pen having an IR light receiving member.

The pen tip module device for an optical electronic pen according to the present invention includes a nib member 121a positioned at the distal end of its body, and a nib member 121a extending from the nib member 121a in the pen body member 110 direction in a wide flat plane. and a reflective plate member (121b) forming a flat plate-shaped reflective surface, and a wing member ( 121c) having a pen tip member 121; and a pen tip fastening member 122 connected to the pen body member 110 while gripping the pen tip member 121 to couple the pen tip member 121 and the pen body member 110 together.

In this case, it is preferable that the reflecting plate member 121b is gradually inclined toward the center of the inner diameter of the pen body member 110 from the pen tip member 121a toward the pen body member 110 .

In this case, it is preferable that the reflection surface of the reflection plate member 121b and the wing member 121c is white for reflection of IR light.

In the present invention, the pen tip fastening member 122 includes a body connecting member 122a connected to one end of the pen body member 110; a pen tip cover member 122b in the form of enclosing the front end of the pen tip member 121 in a state extending from one end of the body connecting member 122a; A partition wall member (122c) dividing the body connecting member (122a) and the pen tip cover member (122b) from the inside of the pen tip cover member (122b) corresponding between the body connecting member (122a) and the pen tip cover member (122b); can do.

Also, the pen tip member 121 may further include a fitting rod member 121d extending from one end of the reflecting plate member 121b corresponding to the direction in which the pen body member 110 is positioned.

In addition, the partition member 122c includes a rod grip hole member 122c_1 whose body is formed through its body corresponding to the cross-sectional shape of the fitting rod member 121d to grip the outer surface of the fitting rod member 121d; and a reflected light guide hole member 122c_2 formed through its body at a position adjacent to the rod grip hole member 122c_1 to guide infrared rays reflected from the reflecting plate member 121b to converge on the IR light receiving member.

The present invention has the advantage of improving the recognition rate of the movement trajectory of the optical electronic pen as the pen tip member includes the nib member, the reflecting plate member, and the wing member.

In addition, the present invention also shows the advantage of lowering the distortion of the reflected light as the reflecting plate member is provided with a flat and flat plate-shaped reflective surface.

In addition, according to the present invention, as the reflecting plate member is formed to be inclined toward the center of the inner diameter of the pen body member in the direction of the pen body member, even when the user tilts the pen tip module device a lot on the panel to take notes, the infrared rays reflected from the panel are reflected from the IR light receiving module It also shows the advantage of improving the active ingredient delivered to

In addition, the present invention has the advantage of reducing the risk of loss or failure of individual components in the process of loosening or combining the pen tip member for replacement, for example, as the pen tip member, the reflecting plate member, the wing member, and the fitting rod member are integrally formed. also shows.

1 is a perspective view showing a pen tip module device according to the present invention;
[FIG. 2] is a perspective view of [FIG. 1] from another angle,
[FIG. 3] is a view showing [FIG. 2] from another angle,
[FIG. 4] is a view of [FIG. 3] viewed from the top,
[FIG. 5] is a view showing a partial configuration in [FIG. 1],
[FIG. 6] is an enlarged view by cutting out a part in [FIG. 5],
[FIG. 7] is an enlarged view by cutting out a part of [FIG. 2],
[FIG. 8] is a view showing some components separated from [FIG. 2],
[FIG. 9] is an enlarged view by cutting out a part of [FIG. 8],
[FIG. 10] is an enlarged view by cutting out a part of [FIG. 3];
[FIG. 11] is a view showing a partial configuration in [FIG. 4],
[FIG. 12] is an exemplary diagram illustrating a state of use on a panel by extracting some components from the pen tip module device according to the present invention;
[FIG. 13] is an exemplary view showing a state in which the pen tip module device according to the present invention moves on the panel;
[FIG. 14] is another exemplary view showing a state in which the pen tip module device according to the present invention moves on the panel;
[Fig. 15] is an exemplary diagram showing a comparison of the dot pattern recognition performance according to the material characteristics of the pen tip member in the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

[FIG. 1] is a perspective view showing a pen tip module device according to the present invention, [FIG. 2] is a perspective view showing [FIG. 1] from another angle, and [FIG. 3] is [FIG. 2] from another angle One view, [Fig. 4] is a view looking at [Fig. 3] from the bottom up, [Fig. 5] is a view showing a part of the configuration in [Fig. 1], [Fig. 6] is [Fig. 5] ] is an enlarged view by cutting out a part, [Fig. 7] is a view showing an enlarged view by cutting out a part in [Fig. 2], [Fig. , [FIG. 9] is an enlarged view by cutting out a part of [FIG. 8], [FIG. 10] is an enlarged view by cutting out a part in [FIG. 3], and [FIG. 11] is an enlarged view of [FIG. 4] It is a diagram showing some components separated from the .

1 to 11, in the present invention, the optical electronic pen includes a pen body member 110, a pen tip module member 120, an IR light emitting member (not shown), and an IR light receiving member (not shown). may be included.

The pen body member 110 is an element constituting the body of the electronic pen and may be formed to be elongated in the form of a bar so that a user can grip the pen body member 110 .

The pen tip module member 120 may be connected to one end of the pen body member 110 and configured to be slidable on the display panel according to a user's manipulation.

The IR light emitting member (not shown) is composed of an infrared LED (light emitting diode) or VCSEL (vertical cavity surface light emitting laser) element, and is an element irradiating light on the panel for location code recognition. The IR light emitting member is mounted inside the pen body member 110 to irradiate infrared rays toward the pen tip module member 120 to reach the display panel.

The IR light receiving member (not shown) may be preferably adopted as an infrared camera, and is an element for receiving the reflected light reflected from the surface of the display panel to identify the location code of the panel.

On the other hand, the IR light receiving member can receive the reflected light coming into its effective light receiving area (Field of View, FOV), the present invention is to improve the structure of the pen tip module device so that the IR reflected light effectively reaches the FOV.

To this end, the pen tip module member 120 may include a pen tip member 121 and a pen tip fastening member 122 . The pen tip member 121 is connected to the pen body member 110 through the pen tip fastening member 122 .

The pen tip member 121 may include a pen tip member 121a, a reflecting plate member 121b, a wing member 121c, and a fitting rod member 121d as in [FIG. 5] to [FIG. 7].

The pen tip member 121a is positioned at the front end of the pen tip member 121 facing the pen body member 110 .

The reflecting plate member 121b is formed to extend from the pen tip member 121a toward the pen body member 110 in a wide plane as shown in FIGS. 7 to 10 to form a flat and flat plate-shaped reflective surface. can do.

Here, the reflecting plate member 121b may be formed to be gradually inclined toward the center of the inner diameter of the pen body member 110 from the pen tip member 121a toward the pen body member 110 . As a result, even when the user writes by tilting the pen tip module device a lot on the panel as in [Fig.

Further, the reflecting plate member 121b may be configured such that its area gradually increases from the pen tip member 121a toward the pen body member 110 as shown in [FIG. 10]. As a result, even when the user writes by tilting the pen tip module device on the panel a lot as in [Fig. 12], the infrared rays reflected from the panel can further improve the effective ingredients transmitted to the IR light receiving module.

The user may use the reflecting plate member 121b of the pen tip module device by tilting it a lot in a direction from the top of the panel in a direction to look at the panel as in [Fig. 12]. In addition, as shown in [FIG. 13] and [FIG. 14], the reflecting plate member 121b may be moved at a twist angle with respect to the panel. In consideration of this point, it is preferable that the area of the reflecting plate member 121b gradually increases from the pen tip member 121a toward the pen body member 110 as shown in FIG. 10 .

On the other hand, as the surface of the reflecting plate member 121b is configured in a flat and flat shape as in [Figs. can

The wing member 121c guides so that both ends of the reflecting plate member 121b are bent in the direction of the reflecting surface, respectively, and the infrared rays reflected from the panel converge in the direction of the IR light receiving member as shown in FIGS.

The wing member 121c is preferably integrally formed with the reflecting plate member 121b as both ends of the reflecting plate member 121b are bent.

The fitting rod member 121d extends from one end of the reflecting plate member 121b toward the side where the pen body member 110 is located as in [Fig. 8] and [Fig. 9] and integrally with the reflecting plate member 121b. can be formed.

Here too, the fitting rod member (121d) is preferably integrally molded with the reflecting plate member (121b). That is, as the pen tip member 121a, the reflecting plate member 121b, the wing member 121c, and the fitting rod member 121d are integrally molded, the pen tip member 121 is attached to the pen body member 110, for example, for replacement. The risk of loss or failure of individual components may be lowered in the process of loosening or joining together.

The pen tip fastening member 122 is connected to the pen body member 110 in a state in which the pen tip member 121 is gripped as in [FIG. 1] to [FIG. 9], the pen tip member 121 and the pen body member 110 can be combined.

Here, the pen tip fastening member 122 may include a body connecting member 122a, a pen tip cover member 122b, and a partition member 122c as in [Figs. 6] and [Fig. 9].

The body connecting member 122a may be formed to protrude from the body of the pen tip fastening member 122 in the form of a skirt so as to be connectable to one end of the pen body member 110 as shown in FIGS. 6 and 9 .

The pen tip cover member 122b is configured to surround the front end of the pen tip member 121 in a state in which it extends from one end of the body connecting member 122a in the form of a skirt as shown in FIGS. 6 and 9 .

The partition member 122c is a body connecting member 122a on the inside of the pen tip cover member 122b corresponding to between the body connecting member 122a and the pen tip cover member 122b as in [Fig. 4] and [Fig. 11]. and a pen tip cover member (122b).

On the other hand, the partition member 122c may include a rod grip hole member 122c_1 and a reflected light guide hole member 122c_2 with reference to FIGS. 4 and 11 .

The rod grip hole member 122c_1 is formed so that the body of the partition wall member 122c penetrates in response to the cross-sectional shape of the fitting rod member 121d as in [FIGS. 4] to [FIG. 6] and [FIG. 11]. It may be configured to grip the outer surface of the member 122d.

As a result, the pen tip member 110 pressed on the panel in a state connected to the pen body member 110 can stably maintain the connection state.

The reflected light guide hole member 122c_2 is formed through the body of the barrier rib member 122c at a position adjacent to the rod grip hole member 122c_1 to guide the infrared rays reflected by the reflecting plate member 121b to converge to the IR light receiving member. do.

Next, a preferred embodiment of the material selection of the reflecting plate member (121b) and the wing member (121c) in the present invention will be described.

In general, an image sensor used in an optical electronic pen operates to recognize a dot pattern by analyzing the IR reflected light. Therefore, it is most preferable for location code identification to form an infrared reflecting surface on the display panel and to arrange a dot pattern made of a material that absorbs infrared rays thereon.

However, since only a dot pattern made of a material that absorbs infrared light is formed on the display panel of an IT product such as a smartphone or tablet PC, and there is no infrared reflective surface that can reflect and send IR light to the image sensor, optical type It is difficult to secure the performance of the electronic pen.

In the present invention, in order to increase the recognition rate of the dot pattern, the pen tip shape and material characteristics of the electronic pen were specified. The shape of the pen tip has been described above with reference to [Fig. 7] to [Fig. 10], and the material characteristics of the pen tip will be described below.

In order to increase the position code recognition rate in the pen tip shape adopted in the present invention, it is preferable that the reflecting plate member 121b and the wing member 121c reflect the IR light well and guide it to the IR light receiving member. In general, it is known that aluminum, silver, and gold have the highest infrared reflectance, and although white-colored materials are lower than these, they are known to have relatively good infrared reflectance.

[Fig. 15] is an exemplary view showing the comparison of the dot pattern recognition performance of the optical electronic pen according to the material characteristics of the pen tip member 121, in particular, the reflecting plate member 121b and the wing member 121c in the present invention.

First, [Fig. 15] (a) shows an image obtained by the image sensor of the electronic pen when the reflective surface of the reflective plate member 121b and the wing member 121c is made of an aluminum material. The aluminum material has a very high infrared reflectance, so the image sensor enters a saturated state and the tote pattern does not appear well.

[Fig. 15] (b) shows an image obtained by the image sensor of the electronic pen when the reflective surface of the reflective plate member 121b and the wing member 121c is made of a white material. The reflecting plate member 121b and the wing member 121c may be formed of a white plastic material or may be formed by applying a white paint to the surface. In this case, it is confirmed that the infrared reflectance of the reflecting plate member 121b and the wing member 121c is appropriate, so that the dot pattern appears clearly in the image.

On the other hand, the pen tip module device for an optical electronic pen according to the present invention may further include a power switch member, a battery member, a pressure sensor member, a wireless communication member, and an electronic pen control member.

The power switch member is preferably provided on the pen body member 110 to turn on/off the power supply of the pen tip module device according to a user's operation.

The battery member is preferably mounted on the inside of the pen body member 110 to supply power consumed during the operation of the pen tip module device.

The pressure sensor member may be configured to sense pressure generated while the pen tip member 121 comes into contact with the upper surface of the panel according to a user's manipulation.

The wireless communication member may be configured to transmit the location coordinates provided from the electronic pen control member to an external smart terminal device through short-range wireless communication (eg, Bluetooth).

The electronic pen control member is preferably mounted on the inside of the pen body member 110 so that the user can recognize that the pen tip member 121 is moving on the panel based on the pressure information transmitted from the pressure sensor member.

The electronic pen control member controls the IR light emitting member to turn-on upon recognizing that the pen tip member 121 is moving on the panel.

Then, the electronic pen control member extracts the coordinates of the position where the pen tip member 121 moves on the panel from the reflected light received through the IR light receiving member and transmits the extracted position coordinates to the wireless communication member.

110: no pen body
111: pen tip holding member
120: pen tip module member
121: no pen tip
121a: no nib
121b: reflection plate member
121c: no wing
121d: no fitting rod
122: Pen tip fastening member
122a: body connection member
122b: pen tip cover member
122c: Bulkhead member
122c_1 : Rod grip hole member
122c_2: reflected light guide hole member

Claims (4)

An optical electronic pen having a pen body member 110 constituting the body of the electronic pen, an IR light emitting member that emits light to the panel surface for location code recognition, and an IR light receiving member that receives reflected light reflected from the panel surface. As a pen tip module device for
A pen nib member 121a positioned at the front end of the body, and a reflective plate member extending from the nib member 121a in the direction of the pen body member 110 on a wide plane to form a flat and flat plate-shaped reflective surface ( 121b) and a pen tip member having both ends of the reflecting plate member 121b bent in the direction of the reflecting surface, respectively, and wing members 121c for guiding the infrared rays reflected from the panel to converge toward the IR light receiving member;
a pen tip fastening member 122 connected to the pen body member 110 while gripping the pen tip member 121 to couple the pen tip member 121 and the pen body member 110;
consists of,
The pen tip fastening member 122,
a body connecting member (122a) connected to one end of the pen body member (110);
a pen tip cover member (122b) in the form of enclosing the front end of the pen tip member (121) in a state extending from one end of the body connecting member (122a);
Partition wall member ( 122c);
to provide
The pen tip member 121 is
a fitting rod member (121d) extending from one end of the reflecting plate member (121b) corresponding to the direction in which the pen body member (110) is positioned;
provide more,
The partition member 122c is
a rod grip hole member (122c_1) whose body is formed through its body corresponding to the cross-sectional shape of the fitting rod member (121d) to grip the outer surface of the fitting rod member (121d);
a reflected light guide hole member (122c_2) formed through its body at a position adjacent to the rod grip hole member (122c_1) to guide infrared rays reflected from the reflecting plate member (121b) to converge on the IR light receiving member;
A pen tip module device for an optical electronic pen, characterized in that it comprises a.
The method according to claim 1,
The reflective plate member (121b) is a pen tip module device for an optical electronic pen, characterized in that gradually inclined toward the inner diameter center of the pen body member (110) from the pen tip member (121a) toward the pen body member (110).
3. The method according to claim 2,
The reflective plate member (121b) and the wing member (121c) is a pen tip module device for an optical electronic pen, characterized in that the reflective surface is composed of a white color for IR light reflection.
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