KR101190909B1 - Infrared touch screen devices - Google Patents

Abstract

The present invention relates to an infrared touch screen device that can reduce the number of light emitting elements and the light receiving portion while increasing the position detection accuracy of the touch screen, thereby achieving cost reduction.
The configuration of the present invention comprises a screen that the user can touch and project an image, an optical scanner connected through a wire to one or more selected corners of the screen to scan and output the entire area of the screen at regular intervals, A plurality of light guide bars installed at an edge to guide light emitted from the light scanner, a light receiving unit receiving and detecting light guided through the light guide bar, and information on the amount of light emitted from the light scanner through the light receiving unit It is configured to include an XY decoder for detecting the touch position of the screen.
The present invention as described above, first, the present invention is possible to install and separate the efficient infrared touch screen through a simple configuration that combines a light scanner, a light guide bar, a light receiving unit using a light emitting element, thereby ensuring convenience in use Can be.
Second, regardless of the size of the screen, the light guide bar and the light receiving unit can be conveniently installed and used, and after installation, the infrared light transmitted from the light scanner through the light guide bar and the light receiving unit can be smoothly transmitted and detected on the screen. This can enable continuous and stable use while preventing unnecessary installation costs from increasing.
Third, it is easy to use through the simple configuration of connecting and connecting the light scanner, the light guide bar, and the light receiving part. By making it available, installation and maintenance costs can be reduced, resulting in overall cost savings.
Fourth, the infrared light can be smoothly guided to the surface of the screen through the rotating motor using the electromagnet and the light emitting element emitting light through the induction current of the motor and the electromagnet, and the light emitting element according to the rotation of the motor. Even in the case of rotating, power can be supplied to the light emitting device stably and efficiently.

Description

Infrared touch screen device {INFRARED TOUCH SCREEN DEVICES}

The present invention relates to an infrared touch screen device, and more particularly, to reduce the number of light emitting devices emitting infrared light and the number of light receiving units collecting the same while increasing the position detection accuracy of the touch screen, thereby achieving cost reduction. In addition, the present invention relates to an infrared touch screen device capable of smoothly grasping each contact position even when a plurality of positions are to be detected on the touch screen.

A touch screen device is a device that detects a location by contacting an object such as a human hand or a pen with a character or a specific icon displayed on a screen without using an input device such as a mouse and processes a specific function.

The touch screen device basically includes a touch panel, a controller, and software. The touch panel determines whether a hand or an object is touched, detects input coordinates, and transmits a signal to the controller, which is transmitted from the touch panel. The converted signal is converted into digital signals and output as coordinates on the screen. Software is a program that receives the digital signals from the controller and implements the touch panel for each operating system.

For example, a touch screen device is classified into a resistive film type, a capacitive type, an ultrasonic type, and an infrared type according to an implementation method. In general, a resistive film type and a capacitive type are mainly used.

The resistive touch panel has a structure in which two transparent conductive films, such as ITO, on which a transparent electrode is coated, are stacked, and an electric signal is generated when the upper and lower electrode layers are contacted by applying pressure with a finger or a pen. A capacitive touch panel is a method in which a protective film is covered on a conductive film that detects a touch by using static electricity generated in a human body and transmits the detected contact information to the display panel under the film. .

However, since the resistive touch panel is not multi-touch and directly pressurized, scratches may occur on the surface, resulting in durability and component problems. Also, since the film used as the conductive film has low transmittance, the image quality is low. It is lowered and there is difficulty in medium / large size of 10 inches or more.

In addition, the capacitive touch panel cannot be used as an input means such as a touch pen which does not flow electricity, and parts having high manufacturing cost must be used in order to enable multi-touch with low recognition rate and precision according to moisture or surrounding environment. .

In contrast, an infrared touch panel is provided with an anti-reflective acrylic plate on the front of the display unit, and includes an light emitting element and a light receiving element at upper, lower, left, and right sides of the edge to form an infrared matrix. The rear part is configured to have a screen installed.

In the infrared touch panel, when a user touches an infrared matrix formed by a light emitting element and a light receiving element with any object regardless of an object such as a finger or a pen, the infrared ray of the portion is blocked to recognize the touched position. It is easy to enlarge the screen.

1 is an exemplary view for explaining a problem according to a conventional matrix type infrared touch screen device, Figure 2 is a view showing the structure of a conventional infrared touch screen device.

As shown in FIG. 2, first and second light emitting elements 12 each of which emits a plurality of laser lights on any one of an upper side and a lower side and one of a left side and a right side along an outline of the screen 10. The light emitting parts 13 and 14 are arranged. The first and second light emitting devices 16 each include a plurality of light receiving elements 16 where the first and second light emitting parts 13 and 14 on the upper side, the lower side, and the left side and the right side of the screen 10 are not disposed. The light receiving parts 17 and 18 are arranged. Therefore, light passes between the first and second light emitting parts 13 and 14 and the first and second light receiving parts 17 and 18 on the screen 10 in a matrix form.

When a specific part of the screen 10 is touched by an object such as a user's finger or pen, light of the part is blocked and is not incident to the first and second light receiving parts 17 and 18, and thus the information is detected and the information is detected. It passes to the X / Y decoder 19 to know the location of the contacted part.

The infrared touch screen device having the above-described configuration includes a plurality of light emitting elements 12 and a plurality of light receiving elements 16 arranged in an array along an outer frame, respectively. And since the second light receiving unit 17, 18 is disposed, it is not necessary to cover the front of the screen 10 with a touch panel can provide a clear screen, not only to enlarge the size of the screen, but also to the kind of objects to contact Because it has the advantage of operating regardless, it is used in ATM terminals, large screen kiosk systems and electronic blackboards, although it is relatively expensive compared to other methods.

However, such a conventional matrix method requires a large number of light emitting devices and light receiving devices, and the number thereof increases as the screen is enlarged, which is disadvantageous compared to other methods because the production cost increases. In addition, since the contact position resolution of the screen is determined by the number of light emitting elements and light receiving elements, the cost problem arises again because the number of light emitting elements and light receiving elements must be increased to improve the resolution.

In order to solve this problem of resolution, FIGS. 1 and 2 estimate and calculate the X / Y position information by linear interpolation using the size information of light obtained from adjacent light receiving elements affected when a contact is made. Improve positional accuracy. However, the size information of the light read from the light receiving element may vary according to the brightness change or the temperature change of the use environment, and may also vary depending on the light transmittance of the object in contact with the screen. The method of estimating position cannot guarantee accurate position accuracy.

Recently, the multi-touch function that can recognize even if two or more objects touch the screen has been important. Such a multi-touch function can provide a more intuitive and useful convenience to the user, such as the reduction and enlargement of the screen, the movement and rotation functions. In the conventional matrix method, since the shadow of the contact object caused by the light of the light emitting device reads the information projected on the X and Y axes by the light receiving devices on the opposite side, as shown in FIG. If it happened, the contact location is unknown. That is, in the case of touching the position A in FIG. 1, Ax and Ay are sensed to know the position of the contacted A. FIG. In addition, when the B position is touched, Bx and By are detected to know the contacted B position. Subsequently, when the position of C or D contacts for the third time while the A position and the B position are in contact, it is impossible to detect the contact. Since Ax, Ay, Bx, and By have already been used to contact the A and B positions, the C and D positions in contact cannot be detected. Also, if the B or D position is in contact with the positions of A and C, the contacted state can be detected, but the B or D position cannot be distinguished.

As illustrated above, the conventional matrix method using two axes of X / Y has a problem in that three or more multi-touches cannot be distinguished.

The present invention has been made to solve the above problems, and provides an infrared touch screen device configured to reduce the number of light emitting elements and infrared light emitting elements that collect the same without collecting the position detection accuracy of the touch screen. It is for that purpose.

Another object of the present invention is to provide an infrared touch screen device capable of smoothly detecting each contact position even when a plurality of objects are in contact with the surface of the touch screen.

In order to achieve the above object, the present invention provides a screen that a user can touch and project an image, and an optical scanner connected through a wire to one or more selected corners of the screen to scan and output the entire area of the screen at regular intervals. And a plurality of light guide bars installed at an edge of the screen to guide the light emitted from the light scanner, a light receiving unit receiving and detecting light guided through the light guide bar, and light emitted from the light scanner through the light receiving unit. It may be configured to include an XY decoder for detecting the touch position of the screen by calculating the information on the amount of light.

At this time, the optical scanner may be configured to include a motor that is rotated by the external power is supplied, and the light emitting element is coupled to one side of the light emitting device which is operated through the power supplied to the motor is rotated to correspond to the rotation direction of the motor. have.

In addition, the optical scanner includes a light emitting unit coupled to a motor which is rotated by an external power supply, a light emitting device operated through a power supplied to the motor to face the screen, and bearings on the motor and the light emitting unit. It may be coupled to be interposed through the rotating to correspond to the rotation direction of the motor and may include a reflector reflecting the light of the light emitting device in the direction of the screen.

In addition, the optical scanner is a motor that is rotated by the external power is supplied, the light emitting device which is coupled to one side of the light emitting device operated through the power supplied to the motor is rotated to correspond to the rotation of the motor, and the light emitting device It may be configured to include a lens coupled to surround the outside to guide the light of the light emitting device in one direction of the screen.

The motor includes a rotating plate for forming a plurality of N poles and S poles in opposite directions or opposite directions, and an electromagnet provided to correspond to one side of the rotating plate to form a magnetic force according to the flow of current. When the current is supplied to the electromagnet, the electromagnet may be converted into a magnetic material and then rotate the N pole and the S pole of the rotating plate to form a magnetic field.

In addition, the light emitting device may be configured of a light emitting diode, and may be configured to emit light through an induced current transmitted from the electromagnet to the rotating plate.

In addition, the light guide bar may include an incident surface to which light emitted through the light scanner contacts, and a scattering surface positioned to correspond to the incident surface and reflecting light emitted through the light scanner.

In addition, the incident surface or scattering surface may be configured to form a plurality of bending grooves forming a step in the longitudinal direction of the light guide bar.

In addition, the bent groove is formed to form a sawtooth shape, one side of the bent groove when the light emitted through the light scanner is introduced into the light guide bar, the reflection layer for preventing the scattering of light introduced into the light guide bar is further It may be provided.

The light guide bar may further include a reflection plate coupled to surround the outer portion of the scattering surface.

In addition, one side of the screen may be configured to further combine a plurality of reflective films for guiding the light emitted from the light scanner after separating the light guide bar.

As described above, according to the infrared touch screen device according to the present invention, first, the present invention enables the installation and separation of an efficient infrared touch screen through a simple configuration combining a light scanner using a light emitting element, a light guide bar, and a light receiving unit. Accordingly, convenience in use can be secured.

Second, regardless of the size of the screen, the light guide bar and the light receiving unit can be conveniently installed and used, and after installation, the infrared light transmitted from the light scanner through the light guide bar and the light receiving unit can be smoothly transmitted and detected on the screen. This can enable continuous and stable use while preventing unnecessary installation costs from increasing.

Third, it is easy to use through the simple configuration of connecting and connecting the light scanner, the light guide bar, and the light receiving part, and it is convenient to replace damaged parts even when any one of the light scanner, the light guide bar, and the light receiving part is damaged during use. By making it available, installation and maintenance costs can be reduced, resulting in overall cost savings.

Fourth, the infrared light can be smoothly guided to the surface of the screen through the rotating motor using the electromagnet and the light emitting element emitting light through the induction current of the motor and the electromagnet, and the light emitting element according to the rotation of the motor. Even in the case of rotating, power can be supplied to the light emitting device stably and efficiently.

1 is an exemplary view for explaining a problem according to a conventional matrix type infrared touch screen device.
Figure 2 is a view showing the structure of a conventional infrared touch screen device.
Figure 3 schematically shows an infrared touch screen device according to the present invention.
Figure 4 is a plan view showing a screen, a light scanner, a light guide portion, a light receiving portion of the present invention infrared touch screen device.
5 is a plan view of an infrared touch screen device with an optical scanner according to another embodiment of the present invention.
6 is a perspective view showing an optical scanner of another embodiment applied to FIG.
7 is a perspective view of an optical scanner according to another embodiment of the present invention.
8 is a plan view of a screen, an optical scanner, a light guide portion, and a light receiving portion of the present invention using an infrared scanner according to FIG. 7.
9 is a plan view showing the configuration of a light guide bar according to the present invention;
10 is a perspective view illustrating a state in which a reflector is coupled to a light guide bar according to the present invention;
11 is a schematic diagram showing the configuration of a motor of the present invention.
12 is a plan view showing a state in which the reflective film is coupled to the screen in accordance with the present invention.

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

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the present invention, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the light-receiving unit applied in the present invention will be found to include a light-receiving element for detecting the light of the light emitting element of the light emitting unit.

First, the configuration will be described with reference to FIGS. 3 to 12.

The present invention provides a screen (100) that a user can touch and project an image, and wires (L) at one or more selected corners of the screen (100) to scan and output the entire area of the screen (100) at regular intervals. Through the light scanner 200 connected to the through, the plurality of light guide bar 300 is installed on the edge of the screen 100 to guide the light emitted from the light scanner 200, and through the light guide bar 300 The light receiving unit 400 for receiving and detecting the guided light and the light amount of the light emitted from the light scanner 200 through the light receiving unit 400 are calculated to detect the touch position of the screen 100. It comprises a XY decoder 500.

The screen 100 is installed so as to be located in front of the monitor for mounting the infrared touch screen, in the present invention serves as a monitor of the infrared touch screen device.

The screen 100, as shown in Figure 12, is composed of a combination of tempered glass 110, reinforced plastic (not shown) on the front of the screen 100, the user through the hand or ballpoint pen (screen, etc.) Even when the surface of the touch screen 100 is preferably configured to prevent the surface of the screen 100 from being damaged.

However, since the screen 100 has the same configuration and effects as the conventional screen, a detailed description thereof will be omitted.

The optical scanner 200 is configured to continuously send the light having a linear tendency to the screen 100, as shown in Figure 4, the motor 210 is rotated by the external power supply, and the motor 210 The light emitting device 221, which is operated through the power supplied to the second side, is coupled to one side and includes a light emitting unit 220 that is rotated to correspond to the rotational direction of the motor 210.

4, the infrared light of the light emitting device 221 coupled to the light emitting part 220 is formed by rotating the light emitting part 220 about the vertical axis with the motor 210. It is configured to scan the surface of the screen while moving in the up, down or left and right directions of the screen 100.

That is, when the motor 210 is rotated, the light emitting unit 220 is configured to rotate so as to correspond to the rotation of the motor 210.

In this case, as described above, the motor 210 and the light emitting unit 220 are coupled to each other so that the rotation direction may be rotated in the same manner through a connection bar (not shown), a connecting shaft (not shown), and the like. Any combination can be applied according to the user's choice.

In addition, the infrared light emitted from the light emitting device 221 may smoothly scan a wide surface of the screen 100 through such a configuration.

In the present invention, the optical scanner can be configured as shown in FIG.

This configuration is applied to another embodiment of the optical scanner of the present invention, as shown in Figures 5 and 6, the operation through the motor 210 is rotated by the external power supply, and the power supplied to the motor 210 The light emitting device 221 is coupled to form a direction opposite to the screen 100 and coupled to the motor 210 and the light emitting unit 220 to be interposed through a bearing (B) It is configured to include a reflector 230 that rotates corresponding to the rotation direction of the motor 210 and reflects the light of the light emitting device 221 in the direction of the screen (110).

In detail, the motor 210 is configured to rotate based on a vertical axis when external power is supplied through the connected wire L, and the reflector 230 includes the motor 210 and the light emitter 220. It is coupled between the bearing (B) between the corresponding to correspond to the rotation of the motor (210).

That is, in the embodiment of the present invention, the motor 210 and the light emitting unit 220 do not apply to the corresponding configuration, the motor 210 and the reflector 230 is rotated to correspond to the vertical axis The light emitting unit 220 is configured to be firmly fixed through a separate fixing bar 250 and the like, even when the motor 210 and the reflector 230 rotate. Is configured not to interfere.

For example, as shown in FIGS. 5 and 6, when the reflector 230 installed at one side of the light emitting unit 220 emits light toward the direction corresponding to the screen 100. In addition, the light emitted from the light emitting device 221 may be reflected in the direction of the screen 100 through the reflector 230 which rotates corresponding to the motor 210.

In this case, the light emitting unit 220 or the reflector 230 is reflected through the reflector 230 after the light emitted from the light emitting device 221 of the light emitting unit 220 is smoothly transmitted to the reflector 230 As illustrated in FIG. 6, the light emitting unit 220 or the reflector 230 is inclined in the longitudinal direction so that the light of the light emitting device 221 may be smoothly guided in the direction of the screen 100. 220 is preferably installed.

Therefore, as shown in FIG. 5, the infrared light emitted from the light emitting element 221 is transmitted to the reflector 230 and then reflected through the reflector 230 up, down, left and right of the screen 100 and is wide. You will be able to scan the range.

As described above, through the configuration of the optical scanner 200 according to the embodiment of the present invention and another embodiment, it is possible to smoothly solve the problem that many light emitting elements 221 are required in the related art.

In this case, as described above, the motor 210, the light emitter 220, and the reflector 230 may be connected to the motor 210 and the reflector 230 through a fixing bar 250 and a connection bar (not shown). If the rotational direction of the rotation is the same and at the same time the light emitting unit 220 is configured to maintain a fixed state in addition to the coupling through the bearing (B) shown in accordance with the user's selection may be applied to various coupling methods. will be.

In addition, in the present invention, the above-described light scanner 200 may be configured in another modified embodiment as shown in FIGS. 7 and 8.

The configuration of the optical scanner 200, as shown in Figure 7, the external power is supplied to rotate the motor 210, and the light emitting element 221 which is operated through the power supplied to the motor 210 is one side It is coupled to the light emitting unit 220 is rotated to correspond to the rotation of the motor 210, and coupled to surround the outside of the light emitting device 221 to guide the light of the light emitting device 221 in the direction of the screen The lens 240 is configured to include.

This configuration, as applied in the embodiment and the other embodiment of the present invention with reference to Figures 4 to 6, the light emitted from the light emitting element 221 to the screen, or through the reflector 230 By guiding the lens 240 to surround the outside of the light emitting device 221 without guiding it in the direction of the screen 100, the light of the light emitting device 221 is directed toward a point of the surface of the screen 100 It is configured to be guided by.

As described in the embodiment of the present invention, the light emitting unit 220 and the light emitting device 221 rotate correspondingly as the motor 210 rotates.

In this case, the lens 240 preferably uses a convex lens to be guided in a direction of one point to the surface of the screen 100.

According to this configuration, as shown in FIG. 6, even when the light of the light emitting device 221 is guided to the surface of the screen 100 and the motor 210 and the light emitting unit 220 rotate based on a vertical axis. The light of the light emitting device 221 can be guided toward the surface of the screen 100 in a direction of one point.

The light emitting unit 220 of the optical scanner to which the above-described embodiments of the present invention, another embodiment, and another embodiment are applied may be emitted by an external power source supplied through the wire L to the motor 210. The light emitting device 221 is provided

In addition, the light emitting device 221 is configured to continuously transmit infrared light in the direction of the screen 100, it is preferable to use a light emitting diode in the present invention.

In particular, in the above description, the light emitting device 221 emits light through an external power source supplied to the motor 210. However, the light emitting device 221 may be configured by the user's selection of the motor 210 of FIG. Through the configuration, the light emitting device 221 may be configured to emit light.

11, the rotating plate 211 forming a plurality of N poles and S poles in a direction facing each other or opposite to each other, and corresponds to one side of the rotating plate 211. It can be achieved by including an electromagnet 212 is provided to form a magnetic force in accordance with the flow of current.

That is, as shown in FIG. 11, when an external power source (current) is supplied to the electromagnet 212, the electromagnet 212 is converted into a magnetic material, and thus the rotating plate 211 is opposed to the electromagnet 212. Rotate according to the magnetic field of the motor 210 and the light emitting unit 220 is rotated at the same time, using the induced current generated through the change of the magnetic field generated between the rotating plate 211 and the electromagnet 212 Thus, the light emitting device 221 can be made to emit light.

At this time, the outer portion of the motor 210 and the electromagnet 212 may be provided with a coil (C) wound a plurality of times according to the user's selection.

As described above, when the light emitting device 221 is used as a light emitting diode, the light emitting diode uses a feature of a light emitting diode capable of emitting light at a rated voltage smaller than that of a general light bulb because the rated voltage of the light emitting diode is within 2V. By connecting the light emitting device 221 to one side of the rotating plate 211 through the wire (L) through the change in the magnetic field (induction current) generated in the rotating plate 211 and the electromagnet 212 The light emitting device 221 can be induced to emit light.

For example, the power supplied to the motor 210 and the light emitting device 221 is configured to be directly supplied with power by connecting a wire L to the motor 210 and the light emitting device 221 according to a user's selection. Of course, as described above, so that the power supplied to the motor 210 is converted into an induced current generated between the coil (C) wound on the rotating plate 211 and the electromagnet 212 After that, the coil C and the light emitting device 221 may be electrically connected to each other so that the light emitting device 221 may be configured to emit light.

However, the technology applied to the present invention rotates the motor 210 to rotate the light emitting unit 220 or the reflector 230 correspondingly and at the same time the light emitting device 221 coupled to one side of the light emitting unit 220. ) Is configured to direct the light toward the screen 100, if the configuration for achieving this configuration to connect the motor 210, the light emitting unit 220, the light emitting element 221 is appropriately changed according to the user's selection It can be applied.

In addition, in the case of configuring the motor 210 by applying the electromagnet 212, the size and number of the iron core or wound coil (C) of the electromagnet 212 is appropriately changed according to the user's selection Of course you can.

Through the above configuration, the motor 210, the light emitting unit 220, and the light emitting device 221 can be continuously rotated in the same direction, as shown in another embodiment of the present invention, the motor 210 ) And the reflector 230 will be able to continuously rotate in the same direction.

In addition, as described above, even when the motor 210 and the light emitter 220 rotate or the motor 210 and the reflector 230 rotate, light emission of the light emitting device 221 may be continuously performed. Will be.

In addition, although not shown in detail in the present invention, the current applied to the electromagnet 212 may be controlled and used through a separate controller (not shown).

The controller (not shown) is configured to allow power to be sequentially applied according to the position of the electromagnet 212 configured to correspond to one side of the rotating plate 211 to the electromagnet 212, the light emitting unit 220 The light emitting device 221 of the light emitting is to be made sequentially.

That is, by the operation of the motor 210, the light emitting unit 220, the light emitting element 221 of the light scanner 200 through the control unit (not shown) to be made sequentially according to the installation order or location Infrared light emitted from the light scanner 200 installed at one side of the screen 100 does not interfere with each other and can be smoothly transmitted to the light receiving unit 400.

As described above, the configuration for allowing the light emitted from the light emitting element 221 of the optical scanner 200 to be transmitted to the light receiving unit 400 after smoothly scanning the surface of the screen 100 is a user According to the selection of the control unit (not shown) can be achieved by adjusting the light emitting time of the light emitting device is achieved, of course, the light emitting device 221 of the optical scanner 200 is installed a laser beam having a different frequency It is configured to emit light, and the light receiving unit 400 for receiving the light is also configured to receive only a laser beam of a corresponding frequency, respectively, it can be applied to various changes according to the user's selection.

In addition, as described above, even when the optical scanner 200 and the light receiving unit 400 are installed so as to be installed according to a user's selection without installing the corresponding ones to face or face each other, the optical scanner 200 is installed. The surface of the screen 100 can be smoothly scanned through infrared light of the present invention, and even if a plurality of contact positions occur on the surface of the screen 100, the contact positions can be smoothly determined through the light receiving unit 300. You can do it.

The configuration described above can be applied to the configuration of the optical scanner of the present invention according to FIG. 4 as well as to the configuration of the modified embodiment of the present invention according to FIGS. 5 to 8.

As described above, it is possible to smoothly solve the problem that a large number of light emitting devices 221 and the light receiving unit 300 in the prior art through this configuration.

At this time, the optical scanner 200 is installed in the corner portion of the screen 100, as shown in Fig. 4, 5, 8 to be configured to be configured to scan all the wide area of the screen 100 Preferably, in order to scan the screen 100 more smoothly according to a user's selection, the horizontal scanner adjusts the horizontal width of the screen 100 based on each side of the screen 100 and installs the optical scanner 200. Of course, you can configure the installation by adjusting the number.

In addition, the light guided to the screen 100 through the light emitting device 221 of the optical scanner 200 is not in contact with the surface of the screen 100 and the separation distance within 5mm ~ 10mm with the screen 100 It is more desirable to configure the installation to maintain.

In addition, as described above, the light guide bar 300 is installed at the edge of the screen 100 to guide the light emitted from the light scanner 200.

In detail, when the infrared light is guided to the surface of the screen 100 through the light scanner 200, the infrared light of the light scanner 200 which is in contact with the light guide bar 300 is received by the light receiving unit ( 400).

For this configuration, as shown in FIG. 9, the light guide bar 300 is positioned to correspond to the incident surface 310 and the incident surface 310 to which light emitted through the light scanner 200 contacts. It is configured to include a scattering surface 320 for reflecting light emitted through the light scanner 200.

The incident surface 310 is formed at one side of the light guide bar 300 positioned at a portion adjacent to the screen 100, and the scattering surface 320 is the light guide bar 300 corresponding to the incident surface 310. When the infrared light of the optical scanner 200 moves while scanning the surface of the screen 100, the infrared light of the optical scanner 200 does not spread out to the outside of the light guide bar. After being incident to 300, the light is guided again toward the surface direction of the screen 100 through the scattering surface 320 or toward the light receiving part 400.

Accordingly, the surface scanning efficiency of the screen 100 may be further increased through the light scanner 200, and the light scanner 200 may be installed even when a plurality of light emitting devices 221 and the light receiving unit 400 are not provided. Through the surface scan of the screen 100 can be made smoothly.

In this case, the light guide bar preferably uses PMMA (polymethylmethacrylate) having good total reflection characteristics with respect to the infrared wavelength, and the light receiving unit 400 is provided with a light receiving device (not shown) to provide a light emitting device of the light scanner 200 ( It is to be able to collect the ultraviolet light guided from the 221 more smoothly.

In addition, since the light receiving unit 400 has the same configuration and effect as the light receiving unit 400 applied to the conventional infrared touch screen device, a detailed description thereof will be omitted.

In addition, the light guide bar 300 includes a plurality of bending grooves 311 and 321 in which the incident surface 310 or the scattering surface 320 forms a step in the longitudinal direction of the light guide bar 300 in order to further increase the efficiency described above. Are formed).

In this configuration, as shown in FIG. 9, infrared light of the light scanner 200 that strikes the incident surface 310 and the scattering surface 320 may be guided more smoothly to the screen 100 or the light receiving unit 400. The bending groove is preferably configured to form a sawtooth shape.

Accordingly, the light entering the light guide bar 300 through the incident surface 310 is guided to the screen 100 or the light receiving unit 400 more smoothly through the scattering surface 320.

In addition, when the infrared light emitted through the light scanner 200 is introduced into the light guide bar 300, the light guide bar 300 prevents scattering of the infrared light introduced into the light guide bar 300. Reflective layers 311a and 321a are further provided.

This, as shown in Figure 9, by preventing the scattering of the infrared light introduced into the light guide bar 300, the infrared light introduced into the light guide bar 300 is the angle of the bent groove 321 of the scattering surface 320 To bend smoothly accordingly.

Accordingly, even when the surface of the screen 100 is scanned through the light scanner 200, the light of the light scanner 200 is prevented from being emitted to the outside through the light guide bar 300, and the light scanner Not only can the scanning efficiency of the screen through 200 be increased, but the light receiving efficiency of the light receiving unit 400 can also be increased.

In addition, as described above, in the case where the light guide bar 300 is deformed and applied to the present invention, as shown in FIG. 10, the reflection plate coupled to the light guide bar 300 to surround the outer portion of the scattering surface 320 ( 330 may be further provided to prevent external emission of light entering the light guide bar 300 in advance.

In addition, the XY decoder 500 may determine a contact position contacting the screen 100 through the infrared light of the optical scanner 200 detected through the light receiving unit 400. Since the configuration of the conventional XY decoder 500 and its configuration and effects are the same, a detailed description thereof will be omitted.

In addition, the present invention is not configured to guide the infrared light emitted from the light scanner 200 through the light guide bar 300 to the scanner 100 or the light receiver 400, as shown in FIG. After separating and removing the bar 300, the reflective film 600 may be combined to surround the outer portion of the screen 100.

This configuration can be made for the user's working environment or the process is simplified, as shown in Figure 12, the infrared light of the light scanner 200 through the reflective film 600 surrounding the outer portion of the screen 100 It is directed toward the surface or the light receiving portion 400 of the screen 100.

In this case, the reflective film 600 is preferably configured to reflect the infrared light of the optical scanner 200 on the same plane as the screen 100 and the optical scanner 200, and such a configuration may also be selected by the user. It can be changed and applied accordingly.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit or scope of the invention as set forth in the following claims It will be apparent to those of ordinary skill in the art.

*** Explanation of symbols for main parts of drawings ***
100: screen 110: tempered glass
200: optical scanner 210: motor
211: rotating plate 212: electromagnet
220: light emitting unit 221: light emitting element
230: reflector 240: lens
250: fixed bar 300: light guide bar
310: entrance face 311,321: bending groove
311a, 321a: reflective layer 320: scattering surface
330: reflector 400: light receiving unit
500: XY decoder 600: reflective film
B: bearing C: coil
L: wire

Claims (11)

The light emitting device has a screen 100 that a user can touch and project an image, a motor 210 that is rotated by an external power supply, and a light emitting device 221 that is operated through the power supplied to the motor 210. An optical scanner 200 connected through a wire L to one or more selected corners of the screen 100 to emit light emitted from the device 221 by scanning the entire area of the screen 100 at regular intervals; A plurality of light guide bars 300 installed at an edge of the screen 100 to guide light emitted from the light scanner 200, and a light receiver to receive and detect light guided through the light guide bars 300; 400 and an infrared touch including an XY decoder 500 for detecting the touch position of the screen 100 by calculating information on the amount of light emitted from the light scanner 200 through the light receiving unit 400. In the screen device ;
The motor 210 is
A rotating plate 211 forming a plurality of N poles and S poles in opposite directions or opposite directions;
It is provided corresponding to one side of the rotating plate 211 includes an electromagnet 212 to form a magnetic force in accordance with the flow of current,
When the current is supplied to the electromagnet 212, the electromagnet 212 is converted to a magnetic material and then rotates the N pole and the S pole of the rotating plate 211 to form a magnetic field Device. The method according to claim 1,
The optical scanner 200
The motor 210,
Infrared touch, characterized in that the light emitting device 221 which is operated through the power supplied to the motor 210 is coupled to one side and includes a light emitting unit 220 rotated corresponding to the rotation direction of the motor 210. Screen device.
The method according to claim 1,
The optical scanner 200
The motor 210,
A light emitting unit 220 coupled to form a direction in which the light emitting device 221 operated through the power supplied to the motor 210 faces the screen 100;
It is coupled to the motor 210 and the light emitting unit 220 to be interposed through a bearing (B) to rotate in correspondence to the rotation direction of the motor 210 and to emit light from the light emitting device 221 of the screen 100. Infrared touch screen device comprising a reflector (230) reflecting in the direction.
The method according to claim 1,
The optical scanner 200
The motor 210,
A light emitting unit 220 coupled to one side of the light emitting device 221 operated through the power supplied to the motor 210 to rotate in correspondence with the rotation of the motor 210;
Infrared touch screen device, characterized in that it comprises a lens 240 coupled to surround the outside of the light emitting device 221 to guide the light of the light emitting device (221) in one direction of the screen (100).
delete The method according to claim 1,
The light emitting element 221 is composed of a light emitting diode,
Infrared touch screen device, characterized in that the light is emitted through the induced current transmitted from the electromagnet (212) to the rotating plate (211).
The method according to claim 1,
The light guide bar 300 is
An incident surface 310 to which light emitted through the light scanner 200 is in contact, and
Infrared touch screen device, characterized in that it comprises a scattering surface (320) positioned to correspond to the incident surface (310) to reflect the light emitted through the light scanner (200).
The method of claim 7,
The incident surface 310 or scattering surface 320 is
Infrared touch screen device, characterized in that formed to form a plurality of bending grooves (311,321) forming a step in the longitudinal direction of the light guide bar (300).
The method according to claim 8,
The bending grooves 311 and 321 are formed to form a sawtooth shape,
On one side of the bent grooves 311 and 321, when light emitted through the light scanner 200 is introduced into the light guide bar 300, a reflection layer for preventing scattering of light introduced into the light guide bar 300 ( Infrared touch screen device, characterized in that further comprises 311a, 321a).
The method according to claim 9,
The light guide bar 300 is
Infrared touch screen device, characterized in that further provided with a reflecting plate (330) coupled to surround the outer side of the scattering surface (320).
The method according to claim 1,
On one side of the screen 100
After separating the light guide bar 300, the infrared touch screen device, characterized in that the plurality of reflective film 600 for guiding the light emitted from the light scanner 200 is further coupled.

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