KR102073000B1 - Electronic pen for writing on pattern film - Google Patents

Abstract

The present invention relates to an electronic pen that writes on a pattern film having a dot pattern and tracks traces and displays the writing contents on a screen of an external device. The present invention relates to a power switch, a communication module for wireless communication with an external device, and an infrared ray to an outside. A light source emitting light by emitting light, a sensor for sensing infrared light scattered from the pattern film, a sensor for sensing pattern information of dots, and a control module for analyzing the sensed pattern information and calculating position information are installed inside the conductive line. A main body portion having the connected terminal ring formed thereon; And an outer body made of a soft elastic material connected to the main body and having a hollow inside and penetrating through the center of the tip, the outer body having an outer side and having an end in contact with a pattern film for writing. It is attached to the inside and provided with a clearance to the terminal ring and provided with a pen tip film writing electronic pen comprising a pen tip portion made of a conductive rubber and the conductive wire is connected.

Description

Electronic pen for pattern film writing {ELECTRONIC PEN FOR WRITING ON PATTERN FILM}

The present invention relates to an electronic pen, and more particularly, to a pattern film writing electronic pen having a high recognition rate in which a trace is traced by writing on a pattern film on which a dot pattern is formed and the writing content is recognized and displayed on a screen of an external device. will be.

In general, the electronic pen is capable of writing by recognizing the trajectory wherever a dot pattern is formed. When the electronic pen is connected to a device such as an electronic notebook, a notebook, a smartphone, a smart TV, an electronic board, the writing is transmitted in real time. Because it is displayed on the screen, it can be checked immediately, and the created and edited contents can be stored in the internal memory or shared with other users or devices through mail, SNS, and cloud.

In the electronic pen recognition methods, as the size of the display screen increases, manufacturing costs increase, power consumption increases, and recognition rates decrease. Accordingly, a technique of finely forming an encoding pattern including position information on a display screen or a film and determining a relative position or an absolute position of an electronic pen written on the surface thereof has been developed.

In the related art, Patent Document 1 discloses that an electronic pen is used on an encoded paper for optical reading that operates on an absolute position coding pattern, and for this purpose, a pattern coding with a plurality of marks each formed to indicate a nominal position and determine a position is provided. A paper is provided, and the electronic pen includes a light emitting diode for illuminating a surface, an optical sensor for imaging the surface, and a processor for reading a position from the image.

However, the electronic pen of Patent Literature 1 is formed with the pen tip biased in one direction, and infrared rays are oscillated only in one direction from the light source so that the pen can be recognized by writing in a specific direction, and the electronic pen rotates in the other direction. When used inclined, the shadow area increases near the pen tip, and the brightness of the external light illuminating the sensor is weakened, thereby reducing the recognition rate of the sensor, thereby making it difficult to accurately identify the pattern image and causing inconvenience.

In addition, the above-described conventional electronic pen has a problem that it is inconvenient to grasp and write due to a thick thickness due to various built-in components.

International Publication No. WO 01/26032 published on 12 December 2001

The present invention has been made to solve all the above-described problems, by improving the structure of the existing electronic pen to remove the core or nib, can be manufactured in a slim shape, free rotation of the electronic pen 360 degrees and multi-directional recognition Even if the electronic pen is tilted in various directions and angles by emitting infrared rays in multiple directions, the image of the dot pattern can be identified for accurate positioning and decoding, the recognition rate is greatly increased, the range of use is increased, It is an object of the present invention to provide a pattern film writing electronic pen that is easy to write and has excellent convenience of use, and when the writing is interrupted, infrared rays are short-circuited to accurately write and freely write.

In order to solve the above problems, the present invention, in the electronic pen to be written on a pattern film with a dot pattern is traced and the handwriting is recognized on the screen of the external device, the power switch, wireless communication with the external device A communication module, a light source that emits infrared rays to the outside, a sensor that senses the infrared rays scattered from the pattern film, senses the pattern information of the dots, and a control module that analyzes the sensed pattern information to calculate the position information. A main body portion having a terminal ring connected to a conductive line at an end portion thereof; And an outer body made of a soft elastic material connected to the main body and having a hollow inside and penetrating through the center of the tip, the outer body having an outer side and having an end in contact with a pattern film for writing. It is attached to the inside and is spaced apart from the terminal ring and is provided with a pen tip portion made of a conductive rubber and connected to the conductive wire, the conductive rubber is a terminal ring due to the pen pressure of the pen tip portion compressed when writing on the pattern film It provides a pattern film writing electronic pen, characterized in that the writing is detected in contact with the contact, and the conductive rubber restored during the non-compression of the pen tip portion is separated from the terminal ring, the writing is not detected.

According to the present invention, by improving the structure of the existing electronic pen to remove the core or nib, can be manufactured in a slim shape, the 360-degree rotation of the electronic pen is free and can be recognized in multiple directions, by emitting infrared light in multiple directions Even when the electronic pen is tilted at various directions and angles, the image of the dot pattern is identified, so that accurate positioning and decoding can be performed, recognition rate is greatly increased, range of use is increased, and writing is easy, so it is easy to use. When the handwriting is interrupted, the infrared light is short-circuited, so it is possible to accurately write and freely write.

1A is an exploded perspective view of the pattern film, and FIG. 1B is a cross-sectional view of the pattern film, and FIGS. 1C and 1D are enlarged views of imaginary grid lines, intersection points, and dots of the pattern layer of the pattern film.
2A and 2B are perspective views illustrating a conventional electronic pen.
3 is a perspective view of an electronic pen according to an embodiment of the present invention.
4A to 4C are partial cross-sectional views of an electronic pen according to an embodiment of the present invention, FIG. 4D is a cross-sectional view of the tunnel of FIG. 4B, and FIG. 4E is a cross-sectional view of the tunnel of FIG. 4C. .
5 is a block diagram of an electronic pen according to an embodiment of the present invention.
6A to 6C are diagrams illustrating a state of use of the electronic pen according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail with reference to specific embodiments for carrying out the electronic pen for writing pattern film according to the present invention.

First, the pattern film 10 will be described, the pattern film 10 having a dot pattern is formed of a multi-layer, a dot pattern attached to the front of a blackboard or a video device such as a monitor, a notebook, a liquid crystal TV, the position pattern The trace of the writing trace of the electronic pen that is formed and written on the surface of the electronic pen can be traced, and the writing content is displayed on the display screen of the video device or the blackboard as the writing of the electronic pen is recognized.

For example, as illustrated in FIGS. 1A and 1B, the pattern film 10 may include a pattern layer 20, a diffusion layer 30, a protective layer 40, a blocking layer 50, an adhesive layer 60, and light transmission. Layer 70 may be included.

Referring to FIG. 1C, the pattern layer 20 is formed on the grid lines at intervals from the intersection point 22 at which the virtual grid lines 21 intersect, and the dot layers 20 have respective dot values. The dot value may be composed of a combination of at least two or more different numbers and has information about a fine pattern in which the location information is encrypted so that the location information of the electronic pen 1 can be determined when writing by the electronic pen.

The dot 23 may be made of an infrared absorbing ink made of a phthalocyanine-based compound, a naphthalocyanine-based compound, an aluminum-based compound, or the like, and each dot is centered on the intersection 22 of the virtual lattice line 21. Position information may be provided by coordinate values of a pattern determined according to a position to be formed.

For example, referring to FIG. 1D, the dot may exist at four positions according to the relationship with the intersection point 22 of the virtual grid line 21, and the dot 23a exists at the right position of the intersection point 22. When the dot value is "1" and the dot 23b is located above the intersection 22, the dot value is "2" and the dot 23c is located on the left side of the intersection 22 Is "3" and the dot 23d is located below the intersection 22, the dot value is represented by "4", whereby the position of the dot about the intersection 22 of the imaginary grid line 21 is centered. Location information can be provided according to.

In addition, the dots may be formed in a diagonal direction instead of on the virtual grid line 21, and a plurality of dots may be formed at the intersection 22 of one virtual grid line 21 to provide location information. In this case, each dot value may be represented by arbitrary coordinates in a manner that is separated into x coordinates and y coordinates, and location information may be provided from these coordinate values.

At this time, the virtual grid lines 21 may be formed horizontally and vertically along a predetermined interval, the distance between the grid lines 21 may be formed of 250 to 300㎛, the dot is a virtual grid line 21 It may be formed at a distance of 1/8 to 1/4 about the intersection point 22 of the dot, the dot is associated with two or more dots around the intersection point 22 of the imaginary grid line 21 It may be formed, the diameter is in the range of 50 to 100㎛.

The diffusion layer 30 is made of a transparent material and is stacked in front of the pattern layer 10, and absorbs and blocks some of the light emitted from the imaging device to prevent light saturation, thereby increasing the sensor recognition rate of the electronic pen and increasing the dot pattern. Accurate position information determination and positioning are possible, and the remaining part of the light is diffused to the front side to increase the visibility and clarity without blurring the image on the display screen or significantly reducing the contrast. To this end, the diffusion layer 30 is provided with anti-glare coated PET, so that light is transmitted without being diffusely reflected, so that the screen of the imaging device can be seen more clearly, and an adhesive layer is formed at the rear to bond the pattern layer 20. .

The protective layer 40 is formed in front of the diffusion layer 30, and is made of PET or polycarbonate to protect the pattern film 10, when made of PET can be rolled as a sheet type, easy to store and move, poly If the roll is made of a thin plate of carbonate, it is not possible to bend it flexibly, and the strength and hardness are increased so that frequent replacement due to the damage of the protective film by the writing is not necessary, and the light-transmitting layer 70 to be described later is unnecessary. The protective layer 40 is coated with an antiglare coating solution having a thickness of 0.1 to 0.5 mm on the outer surface thereof so that light is not diffusely reflected, and the screen of the imaging device is more clearly seen, and the electronic pen does not slip well when writing. Writing is possible. In addition, the protective layer 40 may be detachably attached to the diffusion layer 30 to be replaced.

The blocking layer 50 is a kind of reflective film formed at the rear of the pattern layer 20 and is similar to a film for protecting privacy. The blocking layer 50 reflects a part of the light emitted from the imaging device and blocks the light from being transmitted forward. The light transmittance of the blocking layer 50 is preferably 65 to 90%. When the light transmittance is less than 65%, the visibility and brightness of the display screen are reduced, so that writing is hard to be seen, and when the light transmittance exceeds 90%, As a result, the recognition rate of the sensor decreases and the image of the dot pattern is distorted, making accurate reading of the position information difficult. As such, the blocking layer 50 is provided directly in front of the imaging device, so that the reflectance of the light incident from the imaging device increases, so that about 65 to 90% of the light emitted from the imaging device is transmitted to the front. In addition, light saturation can be prevented so that the recognition rate of the electronic pen can be increased to enable accurate position information determination and positioning of the dot pattern by the electronic pen.

The adhesive layer 60 is formed at the rear of the blocking layer 20 to be attached to the front of the imaging device or the blackboard. In addition, a transparent light-transmitting layer 70 is formed between the pattern layer 20 and the blocking layer 50 to be manufactured as a panel-type pattern film 10, thereby protecting the screen of the imaging device when writing, The strength is enhanced to enable stable writing by the electronic pen 1. In this case, the light transmitting layer 70 may be made of any one selected from an acrylic plate, a polycarbonate plate and a glass plate. As such, the diffusion layer 30 and the blocking layer 50 are respectively attached to the front and rear surfaces of the pattern layer 20 to absorb or reflect some of the light emitted from the imaging device, thereby increasing the recognition rate of the electronic pen. Some of the light is transmitted and diffused to increase visibility and clarity without blurring the image on the display screen or significantly reducing contrast.

2A and 2B, the conventional pattern film writing electronic pen 1 is made of synthetic resin, and has an outer circumferential surface having a round cylindrical shape, and is formed in a considerably thicker thickness than a general pen, and at the end The pen tip 1a is formed, and the pen nib 1b formed long in the longitudinal direction on one side of the pen tip 1a is mounted at a position biased in one direction, and writing is performed by the nib 1b.

On the other hand, referring to Figures 3 to 4c, the electronic pen 1 according to an embodiment of the present invention writes on a pattern film on which a dot pattern is formed so that the locus is tracked and the writing is recognized on the screen of the external device. The main body portion 100, the pen tip portion 200 and the cover portion 300 is made, but the main body portion 100 has a power groove 111 is formed on the top, the power groove 111 inside The power switch 110 is formed in, the charging terminal 112 is formed is possible to charge the built-in battery 116. In addition, the main body unit 100 is displayed when the charging indicator 113 is formed and charging, and the status indicator 114 is formed to display various states related to battery shortage during operation, Bluetooth, Indicator light 115 is formed to indicate the Bluetooth connection state of the communication module 120.

The communication module 120 is embedded in the main body 100 and enables short-range wireless communication such as wifi, Bluetooth, and the like, and thus, the coordinate values sensed by the sensor 140 are analyzed by the control module 150. After being transmitted to an external device (D) such as a computer, a laptop, a liquid crystal TV, and a smartphone through the communication module 120, the display screen is displayed on the display screen or a computer, a laptop, a liquid crystal TV, and a smartphone by the communication module 120. After the coordinates are transmitted to an external device D such as a processor and the coordinate values are analyzed by the processor of the external device D, the actual coordinate values at which the electronic pen 1 is located may be calculated and displayed on the display screen.

In addition, referring to FIG. 5, the main body 100 includes a light source 130, a sensor 140, and a control module 150 therein. The light source 130 emits infrared rays to the outside, and the sensor 140 is an infrared sensor and detects infrared rays scattered at a portion where the dots of the pattern layer 20 are not formed to form the pattern layer 20. After sensing the pattern information of the dots continuously, the control module 150 may calculate the position information by calculating the absolute coordinate value. For example, in the case of recognizing 36 dots of 6 horizontally and 6 vertically on a virtual grid line 21 having a size of 6 × 6, the sensor 140 detects infrared rays and continuously senses pattern information of dots formed in the pattern layer 20. After that, the control module 150 calculates the position information according to each dot value and uses this to determine the absolute coordinate value on the pattern film 10.

In addition, the control module 150 includes a circuit board 151 and a connection terminal portion 152, a conductive line L1 connected to the terminal ring 161, and a conductive line connected to the inner body 220. L2) is connected to the connection terminal portion 152 of the control module 150 through the edge of the main body portion 100, and is connected to the electronic circuit of the circuit board 151 through the terminal of the connection terminal portion 152, When the inner body 220 contacts the terminal ring 161 during writing of the electronic pen, the control module 150 detects and recognizes the writing through the electronic pen.

As shown in FIG. 2A and FIG. 2B, the conventional electronic pen 1 has a pen tip 1a structure in which the nib 1b is formed in one direction and is tilted in a specific direction so that the writing of the sensor 140 may be performed. When the electronic pen 1 is rotated and tilted in a different direction, the shadow area is increased near the pen tip 1a, and the brightness of the external light that illuminates the sensor 140 is weakened, thereby reducing the recognition rate of the sensor. As a result, it is difficult to accurately identify the pattern image, and it is very inconvenient to use, and since the light emitted from the light source 130 is mostly reflected to the outside or absorbed by the pen tip 1a to be returned to the optical sensor, the position is low. Many problems occurred in the determination and detoxification.

Thus, the present inventors improve the configuration of the main body 100 and the pen tip 200 of the present invention to have a new structure, so that the 360-degree rotation of the electronic pen is free and multi-directional recognition can be used to tilt in any direction It was.

To this end, referring to FIG. 4A, the main body 100 has a protruding jaw 160 protruding inwardly in an end portion thereof in a ring shape, and an upper end portion of the outer body 210 is formed by a pen pressure when writing the electronic pen. It is supported by the protruding jaw 160. In addition, a terminal ring 161 corresponding to an electrode is formed below the protruding jaw 160, and the terminal ring 161 is connected to the connection terminal part 152 through the conductive line L1.

The pen tip portion 200 is connected to the end portion of the main body portion 100, made of a soft elastic material such as rubber, and made of a hollow inside of the reverse conical shape of the top of the cut portion. At this time, the connection method of the main body 100 and the pen tip 200 may be connected in various ways, for example, the pen tip 200 is bonded to the end of the main body 100, or the main body 100 ) And the pen tip part 200 is formed with a screw thread, the pen tip part 200 is connected to the main body part 100 by a screw fastening method, or a cap or a cover (not shown) extending upward from the upper end of the pen tip part 200. ) May be additionally formed so that the cap or cover surrounds the outer circumferential surface of the body portion 100 and is attached and connected thereto.

In addition, a circular penhole 201 is formed in the center of the end (lower end) of the pen tip 200 based on the state in which the pen tip 200 is fastened to the electronic pen, and the edge 202 around the penhole 201 is formed of the pattern film 10. ) Is directly contacted on the handwriting. In this case, the size of the penhole 201 may be formed in a radius of 1.5 to 6mm, and if the radius is less than 1.5mm, it may be difficult to accurately identify the pattern image because the light source does not shine sufficiently, and if the radius exceeds 6mm The tip of the pen may extend too much, making writing difficult and increasing pen thickness.

The pen tip portion 200 is provided on the outside and the lower end portion is in contact with the pattern film 10 to write the outer body 210 and the inside of the outer body 210 is attached to the terminal ring 161 and predetermined The clearance 230 is provided to be spaced apart and is made of a conductive rubber including a carbon black component and made of an inner body 220 connected to the connection terminal portion 152 through the conductive line L2. At this time, the play 230 may be formed with a fine gap of 0.5 to 3mm, thereby, the pen tip 200 can be easily compressed by the pen pressure during writing due to the play 230, The upper end of the inner body 220 is stopped by the protruding jaw 160 to prevent excessive compression and cushioning.

The inner body 220 is formed with a coating layer 221 coated with a ceramic reflecting light and infrared rays on the inner circumferential surface, so that the light is not absorbed and the reflection is made well, the coating layer 221 is a light and infrared sensor By pointing toward 140, the recognition rate of the sensor 140 is increased to enable accurate positioning and decoding of the dot pattern, and to collect the light emitted from the surrounding light and the external device D to brighten the sensor. Therefore, when the electronic pen 1 is tilted at a predetermined angle, even if the periphery of the pen tip portion 200 becomes slightly dark, the recognition rate of the sensor 140 is not reduced, and thus the pattern image can be identified.

The pen tip 200 made of a soft elastic material is compressed or restored to its original state according to the pen pressure applied to the tip of the pen tip 200. The user writes on the pattern film 10 with the electronic pen 1. If the pen tip 200 is slightly compressed due to the pressure applied to the tip of the pen tip 200 when writing letters or pictures, the upper end of the inner body 220 made of conductive rubber is in contact with the terminal ring 161. The conductive line L1 connected to the terminal ring 161 and the conductive line L2 connected to the inner body 220 pass through the edge of the main body 100 to connect the connection terminal portion of the control module 150 ( 152 is connected to the electronic circuit of the circuit board 151 through the terminal of the connection terminal 152, the control module 150 detects this to generate an infrared ray from the light source 130 and to pattern from the sensor 140 Detects infrared rays scattered from the film 10 to sense pattern information of dots Analyzes would be to calculate the location information.

On the other hand, when the pen tip portion 200 of the electronic pen 1 becomes uncompressed (when writing is interrupted) during or after writing, the pen tip portion 200 made of a soft elastic material is returned to the original state. When the inner body 220 made of a conductive rubber is separated from the terminal ring 161 and maintained at a distance as much as the clearance 230, the control module 150 is infrared rays from the light source 130. Even if you write by shorting the rash, the handwriting is not detected.

Therefore, the writing is only detected when the pen tip 200 is in contact with the pattern film 10 to write, and when the writing is not performed on the pattern film 10, the oscillation of infrared rays is short-circuited, thus accurately writing letters or pictures. And free electronic writing is possible.

Sensing by the contact of the electronic pen is already known in the prior art, including the Republic of Korea Patent Publication No. 10-0904170, so a more detailed description will be omitted here.

Referring to FIG. 4B, the light source 130 of the present invention may be provided with an infrared ring provided with an infrared lamp inside the end of the main body 100, and the infrared ring light source is approximately "┏┓". And a covering formed in a shape and an infrared lamp installed inside the covering, wherein the infrared lamp is installed to be irradiated toward the lower pattern film 10 when writing the electronic pen 1.

As a result, the light source 130 of the present invention is installed along the inner edge in the form of an infrared ring, compared to the existing light source at the center of the pen, thereby increasing the infrared detection and recognition rate of the sensor 140, in particular, the pattern information of the dots. Error-free continuous sensing is possible. In addition, although the conventional light source emits infrared rays only in one direction, there is a large difference in recognition rate according to the use angle of the electronic pen, the shadow area near the pen tip, and the brightness of the external light illuminating the sensor, but the light source 130 of the present invention has a ring Even if the electronic pen is tilted in various directions and angles by emitting infrared rays in various directions, the image of the dot pattern can be identified and accurate positioning and decoding are possible, recognition rate is greatly increased, and the range of use is increased. will be.

In the electronic pen according to the second embodiment, a tubular tunnel 170 may be formed along the longitudinal direction of the inner edge of the main body portion 100, the conductive line L1 connected to the terminal ring 161, and the inner body. The conductive wire L2 connected to the 220 passes through the tunnel 170 and is connected to the connection terminal unit 152 of the control module 150 and the electrons of the circuit board 151 through the terminal of the connection terminal unit 152. May be connected to a circuit.

In this case, the cross-sectional shape of the tunnel 170 may be formed in a donut shape, or may be formed in a donut shape in which a portion is open as shown in FIG. 4D. As such, the open hole 172 in which the cross-sectional shape of the tunnel 170 is partially opened. In the case where the donut shape is provided, the conductive line L1 and the conductive line L2 are wired along the open hole 172 and connected to the control module 150 so that the wiring and the connection can be easily performed.

As a third embodiment, referring to FIG. 4C, a plurality of light sources 130 of the present invention are formed on the inner edge of the main body part 100 so as to be spaced apart from each other, and the main body part 100 below the light source 130. A tubular tunnel 170 made of a light-transmissive material such as an opaque synthetic resin is formed to the end of the main body 100 along the longitudinal direction of the circumference so that the infrared rays projected from the light source 130 do not interfere with the sensor 140. Passing through the tunnel 170, the lower end of the tunnel 170 is disposed so that the light-transmitting ring 171 communicating with the tunnel 170 is projected inward so that the infrared light passing through the tunnel 170 is transmitted toward the outside. Can be.

The light-transmitting ring 171 is formed with a light impermeable portion 171a through which light is not transmitted at an upper portion thereof so that the transmitted infrared rays do not interfere with the sensor 140 inside the main body portion 100, and the infrared ray at the lower side of the writing ring A light transmissive portion 171b through which light may be transmitted is formed at the lower portion of the pattern film 10 so as to be transmitted toward the pattern film 10. For example, the light transmissive portion 171b may be made of transparent synthetic resin or glass, and the light impermeable portion 171a may coat a light impermeable material on opaque synthetic resin or glass. In this case, a reflection sheet (not shown) is attached to the inner upper ceiling surface of the light transmission ring 171 to induce infrared rays to be projected toward the lower pattern film 10.

The effect thereof is almost the same as in the above-described second embodiment and will not be described again here.

However, the cross-sectional shape of the tunnel 170 may be formed in a donut shape, or may be formed in a donut shape in which a part is open as shown in FIG. 4E. In the case of having a donut shape provided with the 172, the conductive line L1 and the conductive line L2 are wired along the open hole 172 and connected to the control module 150. In addition, when the cross-sectional shape of the tunnel 170 is a closed donut shape, infrared rays emitted from the light source 130 leak inside to pass through the hole formed for the wiring while passing through the tunnel 170 to sense the sensor 140. Although an error may occur, this problem can be solved when the conductive line L1 and the conductive line L2 are wired through the open hole 172 from the beginning.

In addition, referring to FIGS. 4B and 4C, the main body 100 has a filter 180 through which infrared rays pass through an end portion thereof, and a focusing lens 181 inside the main body 100 above the filter 180. Is formed to focus the infrared rays passing through the filter 180 to collect and collect the light in one place, and a light impermeable focusing tube 182 is formed between the focusing lens 181 and the sensor 140 through the focusing lens 181. The focused infrared light may pass and be transmitted to the sensor 140.

As such, the infrared rays reflected from the pattern film 10 are collected through the focusing lens 181 and the focusing tube 182 to be transmitted to the sensor 140, thereby reducing the area of the sensor to reduce the electronic pen having a slim structure. It can manufacture, reduce unnecessary light interference inside and outside, and increase the recognition rate of the sensor.

In addition, referring to FIG. 4A, the pen tip part 200 may have an inner circumferential ring 240 made of hard material such as a synthetic resin on an inner circumferential surface thereof. Since the pen tip part 200 is made of soft, the pen pressure may not be transmitted well when writing, thus forming a hard inner circumferential ring 240 so that the pen pressure is well transmitted to the entire pen tip part 200 to increase the recognition rate. Can be.

In addition, when a part of the pen tip part 200 is worn by use, the second pen tip part (not shown) may be wrapped around the outer circumferential surface of the pen tip part 200 to increase durability. The second pen tip portion is also made of a soft elastic material, like the pen tip portion 200, the inside is hollow, the pen hole is formed through the center of the end, the pen hole is in direct contact with the pattern film is made, The pen tip part 200 may be fitted into and fastened.

In addition, the cover part 300 covers the pen tip part 200 when the electronic pen 1 is not in use.

As shown in FIG. 6A, when the pattern film 10 is attached to the external device D of the tablet PC to write with the electronic pen 1, the electronic pen 1 is illustrated in FIGS. 6B and 6C. Even if the writing is inclined at various directions and angles, the infrared light emitted from the light source 130 toward the pattern film 10 is scattered at a portion where the dots of the pattern film 10 are not formed, and then is reflected upwards again to form a sensor ( 140, the image of the dot pattern can be identified so that the handwriting content is accurately displayed on the display screen of the external device D through accurate positioning and decoding, the use range is greatly increased, and the degree of freedom is 360 degrees. Rotation is possible, so that writing is easy and usability is increased.

As a result, the electronic pen 1 for pattern film writing according to the present invention can be manufactured in a slim shape by removing the core or nib by improving the structure of the existing electronic pen, and freely rotating the electronic pen 360 degrees and recognizing the multi-direction. Even if the electronic pen is tilted in various directions and angles by emitting infrared rays in multiple directions, the image of the dot pattern can be identified for accurate positioning and decoding, greatly increasing the recognition rate, and increasing the range of use. It is easy to write, so it is easy to use, and when the writing is interrupted, the infrared light is short-circuited so that it is possible to accurately write and freely write.

In the present invention, the above embodiment is an example, and the present invention is not limited thereto. Anything that has substantially the same configuration and achieves the same effect as the technical idea described in the claims of the present invention is included in the technical scope of the present invention.

1. Electronic pen 1a. Pen tip
1b. Nib 10. Pattern film
20. Pattern layer 21. Grid lines
22. Intersection 23.23a, 23b, 23c, 23d. dot
30. Diffusion Layer 40. Protective Layer
50. Barrier layer 60. Adhesive layer
70. Light transmitting layer 100. Body part
110. Power switch 111. Power groove
112. Charging terminal 113. Charging indicator
114. Status indicator 115. Bluetooth indicator
116. Battery 120. Communication module
130. Light source 140. Sensor
150. Control Module 151. Circuit Board
152. Connection terminal part 160. Protruding jaw
161.Terminal Ring 170.Tunnel
171. Floodlight 171a. Light impermeable part
171b. Light Transmissive Part 172. Open Hole
180. Filter 181. Focusing lens
182. Focus pipe 200. Pen tip
201.Penhole 202.Border
210. External Body 220. Internal Body
221. Coating layer 230. Gap
240. Inner ring 300. Cover part
D. External Device

Claims (8)

An electronic pen that writes on a pattern film on which a dot pattern is formed so that a trace is traced and the writing is recognized and displayed on a screen of an external device.
A power switch, a communication module for wireless communication with an external device, a light source that emits infrared rays to the outside, a sensor that senses infrared rays scattered from the pattern film, senses pattern information of dots, analyzes the sensed pattern information, and analyzes the position information A main body unit having a calculating module installed therein and having a terminal ring connected to a conductive line at an end thereof; And
The outer body is made of a soft elastic material connected to the main body and the hollow is formed inside the pen hole is formed through the center of the end, the outer body is provided on the outside and the end is in contact with the pattern film and the writing is performed, the inner body of the outer body Attached to and spaced apart from the terminal ring having a clearance, and made of a conductive rubber, including a pen tip made of an inner body connected to the conductive wire,
Due to the pen pressure of the pen tip portion compressed when writing on the pattern film, the conductive rubber is contacted with the terminal ring, and writing is sensed, and when the pen tip portion is not compressed, the conductive rubber is separated from the terminal ring and writing is not detected. , Electronic writing pen for pattern film.
The method of claim 1,
The inner body is a pattern film writing electronic pen, characterized in that the coating layer coated with a ceramic is applied to reflect the light and infrared rays on the inner peripheral surface.
The method of claim 1,
The light source is a pattern film writing electronic pen, characterized in that provided with an infrared ring provided with an infrared lamp inside the end of the main body.
The method of claim 1,
The body portion is formed with a plurality of light sources on the inner edge,
A tunnel made of a light-impermeable material is formed along a longitudinal direction around the main body portion below the light source, and the infrared rays projected from the light source pass therethrough,
The light emitting ring communicating with the tunnel at the lower end of the tunnel is formed to protrude inward so that the infrared ray is transmitted to the outside, characterized in that the pattern film writing electronic pen.
The method of claim 4, wherein
The light-transmitting ring, the light-transmissive portion is formed on the upper portion, the light-transmitting portion is formed on the pattern film, characterized in that the electronic pen for writing.
The method of claim 1,
The main body portion is formed at the end and the filter through which the infrared light passes;
Focusing lens formed on the filter side to focus and collect the infrared rays passing through the filter,
An electronic pen for pattern film writing, which is formed between the focusing lens and the sensor and includes a focusing tube made of a light-impermeable material passing through the focused lens and focused on the infrared light.
The method of claim 1,
The pen tip portion of the pattern film writing electronic pen, characterized in that a hard inner circumference ring is formed on the inner circumferential surface.
The method of claim 1,
The pattern film writing electronic pen further comprises a second pen tip part which is fastened to the outer circumferential surface of the pen tip part when a part of the pen tip part is worn out.

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