KR101579466B1 - Electronic device for sensing 2d and 3d touch and method for controlling the same - Google Patents

Abstract

The present invention relates to an electronic device having 2D and 3D touch functions which can sense the 2D and 3D touch of a pointer and a control method thereof, wherein the electronic device comprises: a display unit; a bezel frame unit wrapping the circumference of the display unit; a plurality of light emitting units arranged at first intervals in the bezel frame unit; a plurality of light receiving units arranged at second intervals in the bezel frame unit; a beam splitter positioned in the progress direction of light generated from the light emitting unit and splitting the light, incident from the light emitting unit, into first light for sensing the 2D touch and second light for sensing the 3D touch; a driving control unit sequentially operating the light emitting units according to a predetermined time interval; and a motion recognition unit detecting and interpolating the intensity of the first light to calculate a horizontal coordinate, detecting the intensity of the second light reflected from a preset pointer to calculate a spatial coordinate, extracting a motion of the pointer based on the intensity of the detected light and performing an operation corresponding to the extracted motion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device having a 2D and 3D touch function,

The present invention relates to an electronic device having a 2D and 3D touch function capable of sensing 2D and 3D touches of a pointer and a control method thereof.

Recently, as the touch recognition technology and the three-dimensional display technology are developed, researches about 3D interaction that allows the user to access the electronic device three-dimensionally are actively being studied.

In the 3D interaction, the conventional touch screen detects the X-Y axis input as the touch input, and the Z axis input also detects the space input as the touch input.

In the conventional two-dimensional touch method, a light emitting element of a sideview and a light receiving element of a side view are disposed, and the light of the light emitting element is adjusted in a specific direction through a light guide, And irradiates light in an invisible infrared ray region.

Therefore, when a pointer such as a human hand or a pen is placed on the surface of the display screen for a touch, light does not pass through it. Therefore, a two-dimensional touch is recognized using the pointer.

Such a two-dimensional touch can be implemented only by a simple touch.

In order to solve the problem of two-dimensional touch, a three-dimensional touch technology has been developed. In a three-dimensional touch technology such as a gesture, a light emitting element of a topview and a light receiving element of a top view are arranged, When the pointer approaches, the light receiving element recognizes the reflected light and finds the position of the pointer.

Therefore, since the two-dimensional touch method and the three-dimensional touch method are different technologies, they are required to be manufactured separately, so that a large amount of space is required in terms of structure and the cost increases.

In addition, since the light emitting device used in the three-dimensional touch method has a limitation in the radiation angle, a dead zone in which the touch recognition is impossible can occur in the display area.

Therefore, it will be necessary to develop an electronic device having a 2D and 3D touch function capable of accurately and precisely detecting the 2D and 3D touch of the pointer without a dead zone in the future.

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to satisfy the above-mentioned need, and it is an object of the present invention to dispose a light separation unit for separating light incident from a light emitting unit into first light for 2D touch sensing and second light for 3D touch sensing, It is an object of the present invention to provide an electronic device having a 2D and 3D touch function capable of accurately and precisely detecting 2D and 3D touches of a pointer and a control method thereof.

According to another aspect of the present invention, there is provided an electronic device including a display unit, a bezel frame unit surrounding the display unit, and a plurality of light emitting units arranged at a first interval in the bezel frame unit, A plurality of light receiving portions disposed at a second interval in the bezel frame portion; a plurality of light receiving portions positioned in a traveling direction of light generated from the light emitting portion, A driving control unit for sequentially operating the plurality of light emitting units according to a predetermined time interval; and a controller for calculating horizontal coordinates by detecting and interpolating the light amount of the first light, The spatial coordinates are calculated by detecting the amount of the second light reflected by the pointer, the motion of the pointer is extracted based on the light amount of the detected light, That the motion for performing the operations that may include a.

Here, the drive control unit can sequentially operate clockwise or counterclockwise according to the order in which the plurality of light emitting units are arranged.

The motion recognizing unit includes a detecting unit that detects the amount of light reflected from the pointer through the light receiving unit, a noise removing unit that removes noise light belonging to a wavelength band other than a predetermined wavelength band from the light amount of the detected light, A coordinate extraction unit for extracting the motion of the pointer according to the coordinates of the pointer; a detection unit, a noise removal unit, and a coordinate calculation unit for calculating coordinates of the pointer, And a controller for controlling the motion extracting unit and performing an operation corresponding to the extracted motion.

Here, the coordinate calculation unit may calculate the spatial coordinates by detecting the light amount of the second light for sensing the 3D touch reflected on the predetermined pointer after calculating the horizontal coordinate by detecting and interpolating the light amount of the first light.

Then, when interpolating the light amount of the first light, the coordinate calculation unit can interpolate the light amount of the first light received from the light emitting units facing each other by cross.

According to another aspect of the present invention, there is provided a method of controlling an electronic device having a 2D and 3D touch function, the method including sequentially operating a plurality of light emitting units according to a predetermined time interval, A first touch for sensing a touch and a second touch for sensing a touch of the touch; receiving the first light for sensing a 2D touch directly; detecting and interpolating the amount of light of the received first light, Calculating coordinates of the detected light, calculating coordinates of the detected light, receiving second light reflected from the predetermined pointer among the second lights for 3D touch sensing, detecting the amount of light of the received second light, Extracting a motion of the pointer based on the amount of light, and performing an operation corresponding to the extracted motion.

The effect of the electronic device having the 2D and 3D touch function and the control method thereof according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, a light splitting unit for splitting the light incident from the light emitting unit into the first light for 2D touch sensing and the second light for 3D touch sensing is disposed, 2D and 3D touch of the touch panel can be accurately and precisely detected.

In addition, since the light of the light emitting unit is diffused to provide a wide touch area, the motion of the pointer located at a remote location can be precisely and accurately extracted, and the corresponding operation can be accurately performed.

Therefore, the small pointer motion can be recognized easily and accurately, so that the reliability of the electronic device can be improved.

Further scope of applicability of the invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a view showing 2D and 3D touch functions of an electronic device according to the present invention;
2 is a plan view showing an internal configuration of an electronic device according to the present invention;
3 is a cross-sectional view taken along the line I-I in Fig. 2
4 to 8 are views showing the arrangement of the optical isolator according to the present invention
9 to 11 are views showing the arrangement relationship between the light separation unit and the light emitting unit according to the present invention
12 to 14 are views showing the arrangement relationship of the light emitting unit and the light receiving unit according to the present invention
15 is a cross-sectional view showing another embodiment of the electronic device in which the light guide portion is disposed
16 is a cross-sectional view showing the light guide portion of FIG. 15 in detail;
17 is a plan view showing the area of the light guide portion
18 to 20 are sectional views showing a light emitting portion disposed on a side surface of the light guide portion
FIG. 21 is a schematic drawing showing a motion or a part recognizing the motion of the pointer
22 is a block diagram showing a motion recognition part
23 and 24 are diagrams showing an embodiment of an electronic device for explaining a control method of an electronic device according to the present invention
25 is a view showing the light amount data of the first light for sensing the 2D touch sensed by the light receiving unit
26 is a view showing light amount data of the second light for sensing the 3D touch sensed by the light receiving unit
27 is a flowchart for explaining a control method of the electronic device according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The electronic device having the 2D and 3D touch functions described in this specification may be a mobile terminal or a fixed terminal.

Here, the mobile terminal may be a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC, a tablet PC, an ultrabook, a wearable device (e.g., a smartwatch, a glass glass, a head mounted display (HMD)), and the like.

The fixed terminal may include a digital TV, a desktop computer, a digital signage, and the like.

2 is a plan view showing an internal configuration of an electronic device according to the present invention. FIG. 3 is a cross-sectional view taken along the line I-I in FIG. 2. FIG. to be.

1 to 3, the electronic device 100 of the present invention includes a display unit 110, a light emitting unit 121, a light receiving unit 122, a light separating unit 130, a bezel frame unit 140, And a motion recognition unit (not shown).

Here, the display unit 110 may display information processed in the electronic device 100. [

For example, when the electronic device 100 is navigation, a UI (User Interface) or a GUI (Graphic User Interface) for searching a specific place is displayed.

As shown in FIG. 1, the display unit 110 may configure most of the front surface of the electronic device 100 according to the present invention.

The display unit 110 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) a flexible display, and a 3D display.

The bezel frame unit 1201 is configured to surround the display unit 110.

As shown in FIG. 2, the bezel frame unit 140 may have a shape similar to that of the display unit 110.

Accordingly, the bezel frame portion 140 is disposed to surround the display portion 110, and may be overlapped with a part of the periphery of the display portion 110, as the case may be.

When the bezel frame unit 140 is provided in front of the display unit 110, an opening may be formed in the center of the bezel frame unit 140 so that the display unit 110 may be exposed.

The bezel frame portion 140 may then be one of the inner frames of the electronic device 100 of the present invention.

1, the front exterior of the electronic device 100 may be formed through the front case 101, and the bezel frame portion 140 may be formed on the inside of the front case 101, for example, .

According to one embodiment, the bezel frame portion 140 may be a part of a liquid crystal (LCD) module constituting the display portion 110. [

In this case, the bezel frame unit 140 supports a liquid crystal (LCD) panel and the outer periphery of the backlight unit disposed therebelow, and can couple the liquid crystal panel and the backlight unit.

The bezel frame portion 140 may be integrally formed with a printed circuit board for driving the light emitting portion 121 and the light receiving portion 122 as required or the bezel frame portion 140 itself may be formed integrally with the electronic device A case for forming an outer appearance of the body 100 may be constituted.

Next, the bezel frame unit 140 may include a plurality of light emitting units 121 arranged at a first interval and a plurality of light receiving units 122 arranged at a second interval.

Here, the first interval between the light emitting portions 121 may be narrower than the second interval between the light receiving portions 122.

At this time, the number of the light emitting portions 121 may be larger than the number of the light receiving portions 122.

In other cases, the first gap between the light emitting portions 121 may be wider than the second gap between the light receiving portions 122. [

At this time, the number of the light emitting portions 121 may be smaller than the number of the light receiving portions 122.

2, the plurality of light emitting units 121 and the light receiving units 122 are provided along the periphery of the display unit 110 and can form a kind of optical sensor module array that surrounds the display unit 110 have.

Each of the light emitting units 121 irradiates light and when the irradiated light is reflected from the pointer 10 positioned apart from the display unit 110, each light receiving unit 122 receives the reflected light can do.

When the pointer 10 as a user's hand is positioned in a region irradiated with light from a plurality of light emitting portions 121 in front of the display portion 110, The reflected light can be incident on the light receiving unit 122 after being reflected by the pointer 10.

When the reflected light is incident, the motion recognition unit can detect that the pointer 10 is present in front of the display unit 110, and at the same time detects the light amount of the reflected light, and based on the detected light amount, And the display unit 110 can be estimated.

Then, the motion recognition unit can extract the motion of the pointer 10 based on the light amount of the detected light, and perform an operation corresponding to the extracted motion.

That is, when the light receiving unit 122 senses the pointer 10 close to the display unit 110, the motion detecting unit can analyze the motion of the pointer 10 and perform an operation predefined for each motion.

Here, the operation may include changing the output screen of the display unit 110, controlling the sound output from the electronic device 100, turning on / off the electronic device 100, and the like.

Each motion can be stored corresponding to a specific motion, and the motion recognition unit can retrieve the motion of the extracted pointer 10 from the pre-stored motion, and can perform the motion corresponding to the detected motion.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions.

In some cases, the embodiments described herein may be implemented by the motion recognition unit itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules.

Each of the software modules may perform one or more of the functions and operations described herein.

Software code can be implemented in a software application written in a suitable programming language. The software code is stored in a memory and can be executed by the control unit.

On the other hand, the plurality of light emitting portions 121 can individually form an array of light emitting portions 121 by irradiating light.

For example, the light emitting unit 121 may be a light emitting diode (LED) device that emits infrared light.

Each of the light emitting units 121 may be mounted on a printed circuit board formed on the bezel frame unit 140 and may irradiate light toward the front of the display unit 110 under the control of the printed circuit board.

When each light emitting portion 121 irradiates light, the light emitted from the light emitting portion 121 may have different radiation angles depending on the type of the light emitting portion 121.

Here, as the radiation angle increases, the light emitted from one light emitting portion 121 can be irradiated to a wider region.

The light receiving unit 122 receives the light emitted from each light emitting unit 121 and reflected by the predetermined pointer 10, and converts the light amount of the reflected light into an electric signal.

The light receiving unit 122 may include an infrared sensor, a photo diode, a photo transitor, or the like, and may generate an electric signal corresponding to the light amount of the received light.

The light receiving unit 122 may be mounted on a printed circuit board formed on the bezel frame unit 140 and may be electrically connected to the motion recognition unit to transmit the electric signal to the motion recognition unit.

In the present embodiment, a plurality of light emitting units 121 may correspond to one light receiving unit 122, and one light receiving unit 122 and a plurality of light emitting units 121 corresponding to each other may form one optical sensor module can do.

As described above, the bezel frame unit 140 may include a plurality of light emitting units 121 and light receiving units 122.

The light received by the specific light receiving section 122 may be a light which is irradiated from one of the plurality of light emitting sections 121 corresponding to the light receiving section 122 is reflected by the pointer 10, And the light emitted from any one of the light emitting portions 121 may be emitted.

In some cases, the light emitting unit 121 may be disposed under the edge of the display unit 110 in a superimposed manner.

In other cases, the light emitting portion 121 and the display portion 110 may be arranged on different lines.

An optical filter unit (not shown) that transmits light of a specific wavelength band may be disposed on the upper portion of the light receiving unit 122.

The reason for this is that by blocking noise light of different wavelengths, 2D and 3D touches of the pointer can be accurately and precisely detected.

The optical isolator 130 may be located in the traveling direction of the light emitted from the light emitting unit 121. The light emitted from the light emitting unit 121 may be divided into first light 151 for sensing the 2D touch, And a second light 152 for 3D touch sensing.

Here, the optical separation unit 130 may be formed of an acrylic resin such as PMMA (Polymethylmethacrylate), polyethylene terephthalate (PET), cyclic olefin copolymers (COC), polyethylene naphthalate (PEN), polycarbonate (PC) (Mathacylate styrene) resin.

The refractive index of the optical isolator 130 may be about 1.3-1.55, and the transmittance of the optical isolator 130 may be about 80-99%.

The light separating unit 130 transmits an incident surface through which the light incident from the light emitting unit 121 is transmitted and a part of the light transmitted through the incident surface in the first direction, And at least one separating surface for reflecting the light in the second direction.

At this time, the angle between the incident surface and the separation surface of the light separating unit 130 may be an acute angle.

This is because it is possible to increase the separation angle between the first light 151 for 2D touch sensing and the second light 152 for 3D touch sensing.

The light amount of the first light 151 for the 2D touch sensing and the light amount of the second light 152 for the 3D touch sensing may be different from each other.

For example, the light amount of the second light 152 for 3D touch sensing may be greater than the light amount of the first light 151 for 2D touch sensing.

This is because the motion of the pointer located at a remote location can be precisely and accurately extracted by diffusing light upward to provide a wide touch region so that a dead zone does not occur in the upper portion of the display unit 110. [

In addition, the first light 151 for 2D touch sensing may proceed in parallel with respect to the screen of the display unit 110.

The second light 152 for 3D touch sensing may be tilted at a predetermined angle with respect to the screen of the display unit 110. [

Next, the optical isolator 130 may be disposed above the light emitting portion 121 so as to cover the light emitting portion 121.

The light separation unit 130 may be disposed in an area between the light emitting unit 121 and the display unit 110. [

For example, the optical isolator 130 may be divided into a plurality of optical isolators 130 corresponding to the side surfaces of the display unit 110, and the separated optical isolators 130 may be spaced apart from each other .

In addition, another optical isolator 130 among the plurality of separated optical isolators 130 may be disposed above the light emitting unit 121 to cover the light emitting unit 121, The light separation unit 130 may be disposed in a region between the light emitting unit 121 and the display unit 110. [

In another example, the optical separation unit 130 may be integrally disposed continuously along the side surface of the display unit 110 so as to surround the display unit 110.

Optionally, the optical separation unit 130 may further include at least one total reflection surface that totally reflects the light transmitted through the incident surface to the separation surface.

The optical isolator 130 may contact the light emitting unit 121 to cover the entire surface of the light emitting unit 121.

The present invention configured as described above includes a light separating unit for separating the light incident from the light emitting unit 121 into the first light 151 for sensing the 2D touch and the second light 152 for sensing the 3D touch 130) can be disposed so that the 2D and 3D touches of the pointer can be accurately and precisely detected without a dead zone.

4 to 8 are views showing the arrangement of the optical isolator according to the present invention.

As shown in FIGS. 4 to 8, the optical isolator 130 may be positioned in the traveling direction of the light emitted from the light emitting unit 121.

4, for example, when the light emitting unit 121 is a topview type light emitting device, the light separating unit 130 covers the light emitting unit 121, And may be positioned above the light emitting portion 121 so as to face the emitting surface.

In this case, the optical isolator 130 may be spaced apart from the light emitting unit 121 at regular intervals.

That is, the light incident surface 131 of the light separating unit 130 and the light emitting surface of the light emitting unit 121 may be spaced apart at regular intervals.

5, when the light emitting unit 121 is a sideview type light emitting device, the light separating unit 130 may include a light emitting unit 121 (see FIG. 5) so as to face the light emitting surface of the light emitting unit 121, And the display unit 110, as shown in FIG.

In this case as well, the optical isolator 130 may be spaced apart from the light emitting portion 121 at regular intervals.

That is, the light incident surface 131 of the light separating unit 130 and the light emitting surface of the light emitting unit 121 may be spaced apart at regular intervals.

6, the optical isolator 130 may contact the light emitting unit 121 to cover the entire surface of the light emitting unit 121. In this case,

That is, the light separating unit 130 and the light emitting unit 121 may be integrally formed.

Here, the optical separation unit 130 does not have an incident surface and only the separation surface 132 exists, so that light incident from the light emitting unit 121 is directly reflected on the separation surface 132 for the first And the light 151 and the second light 152 for 3D touch sensing.

The light emitting unit 121, which is integrated with the light separating unit 130, may not be located on the same line as the screen of the display unit 110 but may be located further downward.

That is, the light emitting unit 121 and the display unit 110 may be arranged on different lines.

However, the separation surface 132 of the optical separation unit 130 may be located on the same line as the screen of the display unit 110. [

The reason for this is that the first light 151 for detecting the separated 2D touch is moved in a direction parallel to the screen of the display unit 110 on the separation surface 132 of the optical separation unit 130.

7, the optical isolator 130 may be disposed on a side surface of the display unit 110, and the light emitting unit 121 may be disposed under the edge of the display unit 110. Referring to FIG.

In this case, the optical isolator 130 may be spaced apart from the light emitting portion 121 at regular intervals.

That is, the light incident surface 131 of the light separating unit 130 and the light emitting surface of the light emitting unit 121 may be spaced apart at regular intervals.

At this time, the light emitting unit 121 may be a sideview type light emitting device.

The optical separation unit 130 further includes at least one total reflection surface 133 positioned to face the incident surface 131 and totally reflecting the light transmitted through the incident surface 131 to the separation surface 132 You may.

Here, the separation surface 132 of the optical separation unit 130 may be located on the same line as the screen of the display unit 110. [

The reason for this is that the first light 151 for detecting the separated 2D touch is moved in a direction parallel to the screen of the display unit 110 on the separation surface 132 of the optical separation unit 130.

7, since the light emitting unit 121 is disposed below the display unit 110, the light separating unit 130 can reduce the area of the bezel frame unit.

8, the optical isolator 130 may be disposed on a side surface of the display unit 110 and the light emitting unit 121 may be disposed under the edge of the display unit 110 .

In this case, the optical isolator 130 may contact the light emitting portion 121 to cover the entire surface of the light emitting portion 121. [

That is, the light separating unit 130 and the light emitting unit 121 may be integrally formed.

At this time, the light emitting unit 121 may be a topview type light emitting device.

The optical separation unit 130 further includes at least one total reflection surface 133 positioned to face the incident surface 131 and totally reflecting the light transmitted through the incident surface 131 to the separation surface 132 You may.

Here, the separation surface 132 of the optical separation unit 130 may be located on the same line as the screen of the display unit 110. [

The reason for this is that the first light 151 for detecting the separated 2D touch is moved in a direction parallel to the screen of the display unit 110 on the separation surface 132 of the optical separation unit 130.

8 also has an effect of reducing the area of the bezel frame portion because the light emitting portion 121 is disposed below the display portion 110. [

9 to 11 are views showing the arrangement relationship between the light separation unit and the light emitting unit according to the present invention.

9 to 11, the light splitting unit 130 splits the light incident from the light emitting unit 121 into a first light 151 for sensing the 2D touch and a second light for sensing the 3D touch, The light emitted from the light emitting portion 121 may be separated from the light emitting portion 152 by a predetermined distance.

As shown in FIG. 9A, the optical isolator 130 may be of a separate type.

That is, the optical isolator 130 includes first, second, third, and fourth optical isolators 135, 136, 137, and 138 disposed corresponding to the sides of the display unit 110 The first, second, third, and fourth optical isolators 135, 136, 137, and 138 may be spaced apart from each other by a predetermined distance.

Here, since the separate optical isolator 130 of FIG. 9A is disposed only in the region where the light emitting portion 121 is located, there is an advantage that the manufacturing cost is reduced.

At this time, the first, second, third, and fourth optical isolators 135, 136, 137, and 138 are disposed above the light emitting unit 121, and the light emitting unit 121 is a topview type Emitting device.

In some cases, as shown in FIG. 9B, the optical isolator 130 may be integrated.

That is, the optical isolator 130 may be continuously disposed along the side surface of the display unit 110 so as to surround the periphery of the display unit 110.

Here, since the integrated optical isolator 130 of FIG. 9B is disposed so as to surround the periphery of the display unit 110, the integrated optical isolator 130 has a simple merit.

At this time, the first, second, third, and fourth optical isolators 135, 136, 137, and 138 are disposed above the light emitting unit 121, and the light emitting unit 121 is a topview type Emitting device.

10, the optical isolator 130 may be disposed in an area between the light emitting unit 121 and the display unit 110. In this case,

Here, the light emitting unit 121 may be a sideview type light emitting device.

10A is a separable optical isolator 130, and FIG. 10B is an integrated optical isolator 130. FIG.

11, a part of the optical isolator 130 may be disposed above the light emitting unit 121 so as to cover the light emitting unit 121 and the other part of the optical isolator 130 may be disposed above the light emitting unit 121. In this case, Or may be disposed in an area between the light emitting unit 121 and the display unit 110. [

For example, the optical isolator 130 includes first, second, third, and fourth optical isolators 135, 136, 137, and 138 disposed correspondingly to the sides of the display unit 110 The first, second, third, and fourth optical isolators 135, 136, 137, and 138 may be spaced apart from each other by a predetermined distance.

The first and second optical isolators 135 and 136 are disposed in a region between the light emitting unit 121 and the display unit 110 and the light emitting unit 121 is a sideview type light emitting unit Device.

The third and fourth optical isolating sections 137 and 138 may be disposed on the light emitting section 121 and the light emitting section 121 may be a top view type light emitting device.

The first and second optical isolators 135 and 136 may be disposed on the light emitting portion 121 and the light emitting portion 121 may be a topview type light emitting device, And the fourth optical isolators 137 and 138 may be disposed in a region between the light emitting unit 121 and the display unit 110 and the light emitting unit 121 may be a sideview type light emitting device .

As described above, the present invention can be manufactured by variously modifying the arrangement of the light separating unit 130 and the light emitting unit 121.

Figs. 12 to 14 are diagrams showing the arrangement relationship of the light emitting portion and the light receiving portion according to the present invention, wherein Figs. 12 and 13 are plan views and Fig. 14 is a sectional view.

As shown in FIGS. 12 to 14, a plurality of light emitting units 121 and a plurality of light receiving units 122 may be disposed around the display unit 110.

Here, the plurality of light emitting portions 121 may be arranged at a first distance d1, and the plurality of light receiving portions 122 may be arranged at a second distance d2.

At this time, the first spacing d1 between the light emitting portions 121 may be narrower than the second spacing d2 between the light receiving portions 122.

In this case, the number of the light emitting portions 121 may be larger than the number of the light receiving portions 122.

In other cases, the first spacing d1 between the light emitting portions 121 may be wider than the second spacing d2 between the light receiving portions 122.

In this case, the number of the light emitting portions 121 may be smaller than the number of the light receiving portions 122.

As another example, the first distance d1 between the light emitting portions 121 and the second distance d2 between the light receiving portions 122 may be equal to each other.

In this case, the number of the light emitting portions 121 and the number of the light receiving portions 122 may be equal to each other.

The light emitting unit 121 may be a light emitting diode (LED) device that emits infrared light. For example, the light emitting unit 121 may emit light.

Here, the plurality of light emitting portions 121 may all emit light with the same light output intensity, but may also emit light with different light output intensities in some cases.

The light output intensity of the light emitting units 121 arranged in the minor axis direction of the display unit 110 may be greater than the light output intensity of the light emitting units 121 arranged in the major axis direction of the display unit 110 .

The reason for this is that the distance between the opposed light emitting portions 121 is larger than the distance between the light emitting portions 121 arranged in the major axis direction of the display portion 110 121) are closer.

The light receiving section 122 receives the light emitted from each light emitting section 121 and reflected by the predetermined pointer 10 or receives the direct light from the light emitting section 121 facing each other, And converts the light amount of the light into an electrical signal.

Here, the light receiving unit 122 may include an infrared sensor, a photo diode, a photo transitor, or the like, and may generate an electric signal corresponding to the light amount of the received light.

In some cases, an optical filter unit (not shown) that transmits light of a specific wavelength range may be disposed on the upper portion of the light receiving unit 122.

The reason for this is that by blocking noise light of different wavelengths, 2D and 3D touches of the pointer can be accurately and precisely detected.

Meanwhile, the light emitting unit 121 and the light receiving unit 122 may be arranged in various ways.

12A, a plurality of light-emitting portions 121 are arranged between adjacent light-receiving portions 122. The light-receiving portions 122 may be arranged along the array line of the light- .

That is, the light receiving unit 122 may be disposed at both ends of the array line of the light emitting unit 121 arranged at one side of the display unit 110. [

In some cases, as shown in FIG. 12B, one light emitting portion 121 may be disposed between adjacent light receiving portions 122.

That is, the light receiving unit 122 may be disposed between the light emitting units 121 arranged on one side of the display unit 110.

The first distance d1 between the light emitting portions 121 of Figure 12 may be narrower than the second distance d2 between the light receiving portions 122 and the number of the light emitting portions 121 may be smaller than the number of the light receiving portions 122 Can be more.

13A, the light receiving section 122 may be arranged in an array line different from the array line of the light emitting section 121. As shown in FIG. 13A, the array line of the light receiving section 122 includes a light emitting section The arrangement line of the light receiving section 122 may be arranged on the other side of the arrangement line of the light emitting section 121 as shown in FIG.

That is, the array line of the light receiving unit 122 in Fig. 13B can be arranged in the area between the light emitting unit 121 and the display unit 110. Fig.

13C, the array line of the first light receiving section 122a is arranged on one side of the array line of the light emitting section 121 and the array line of the second light receiving section 122b is arranged on the side of the light emitting section 121, As shown in FIG.

That is, the array line of the second light-receiving section 122b may be arranged in a region between the light-emitting section 121 and the display section 110.

Here, the array line of the first light receiving portion 122a receives the first light for detecting the 2D touch, and receives the first light that is directly emitted from the light emitting portions 121 disposed facing the first light receiving portion 122a can do.

The array line of the second light receiving unit 122b receives the second light for 3D touch sensing, and the second light can receive the light reflected on the predetermined pointer.

In this case, since the first light-receiving unit for 2D touch sensing and the second light-receiving unit for 3D touch sensing are separated, 2D and 3D touches of the pointer can be accurately and precisely detected.

14, the light receiving section 122 may be arranged in an array line different from the array line of the light emitting section 121, and the array line of the light receiving section 122 may be arranged in a different direction from the light emitting section 121 And may be disposed on the upper side of the array line.

That is, the arrangement line of the light-receiving portion 122 and the arrangement line of the light-emitting portion 121 can be arranged so as to overlap each other at the upper portion and the lower portion.

In this case, the bezel frame unit 140 may include a main body that supports the light emitting unit 121, and a sub body that is bent upward from the end of the main body and supports the light receiving unit 122.

The embodiment of FIG. 14 has the effect of reducing the area of the bezel frame portion 140.

15 is a cross-sectional view showing another embodiment of the electronic device in which the light guide portion is disposed.

15, the electronic apparatus of the present invention includes a display unit 110, a bezel frame unit 140, a plurality of light emitting units 121, a plurality of light receiving units (not shown) 160 < / RTI >

The bezel frame 140 is disposed to surround the display unit 110 and the plurality of light emitting units 121 are disposed at a first interval in the bezel frame unit 140, (Not shown) may be disposed at a second interval in the bezel frame portion 140.

The light guide unit 160 may be disposed on the upper portion of the display unit 110 to guide the light incident from the light emitting unit 121 toward the upper portion of the display unit 110.

Here, the light guide unit 160 may include an optical plate 161 and a plurality of protrusions 162.

The optical plate 161 of the light guide unit 160 may include a side surface facing the light emitting unit 121 so that light from the light emitting unit 121 is incident.

The plurality of protrusions 162 protrude from the upper surface of the optical plate 161 and can diffuse the light incident from the side surface of the optical plate 161 toward the upper portion of the optical plate 161.

Here, the light guide part 160 may be formed of an acrylic resin such as PMMA (Polymethylmethacrylate), polyethylene terephthalate (PET), cyclic olefin copolymers (COC), polyethylene naphthalate (PEN), polycarbonate (PC) (Mathacylate styrene) resin.

The refractive index of the light guide part 160 may be about 1.3 to 1.55, and the light guide part 160 may have a transmittance of about 80 to 99%.

An air gap may be formed between the cover glass 170 and the optical plate 161 of the light guide unit 160. In this case,

The touch panel 150 may be disposed between the light guide unit 160 and the display unit 110. The light guide unit 160 may be disposed at a predetermined distance from the display unit 110 .

The side surface of the optical plate 161 of the light guide section 160 is arranged to face the light exit surface of the light emitting section 121 and may be disposed at a certain distance from the light exit surface of the light emitting section 121.

15 diffuses the light to the upper portion of the display unit 110 through the light guide unit 160 without using the optical separation unit as shown in FIG. 2, so that the 2D and 3D touch functions can be performed simultaneously have.

In this case, the area of the bezel frame 140 can be reduced.

16 is a cross-sectional view showing the light guide portion of FIG. 15 in detail.

As shown in FIG. 16, the light guide portion 160 may include an optical plate 161 and a plurality of protrusions 162.

The optical plate 161 of the light guide unit 160 can guide the incident light to the center of the display unit 110 by totally reflecting the light when the light of the light emitting unit 121 is incident.

The plurality of protrusions 162 protrude from the upper surface of the optical plate 161 so that when the light totally reflected in the optical plate 161 is incident on the optical plate 161, Can be diffused.

Here, the thickness t of the optical plate 161 of the light guide portion 160 may be about 0.001 mm - 1 mm.

The reason is that if the thickness is too large, the image brightness of the display unit 110 is lowered. If the thickness is too thin, a part of the light is lost, the amount of light traveling in the upward direction is small, have.

The height h of the protrusion 162 of the light guide portion 160 may be about 1% to 10% with respect to the thickness t of the optical plate 161.

Here, the heights of the protrusions 162 may be different from each other, but they may be equal to each other in some cases.

Next, the width w of the projection 162 of the light guide portion 160 may be about 0.1 nanoseconds to 5 nanometers.

If the height and width of the protrusion 162 are too large, the image brightness of the display unit 110 is lowered. If the height and the width of the protrusion 162 are too small, The recognition may be degraded.

The distance d between the adjacent protrusions 162 among the protrusions 162 of the light guide section 160 may be about 1 um to 1000 um.

If the distance between the protrusions 162 is too narrow, the moire phenomenon may occur and the reliability of the touch recognition may deteriorate. If the distance between the protrusions 162 is too wide, The light amount of light is small, and the touch recognition may be deteriorated.

In some cases, the distance d between the adjacent projections 162 may be uneven, but may be equal to each other in some cases.

17 is a plan view showing the area of the light guide portion.

17, the light guide unit 160 is disposed on the upper side of the display unit 110, and can guide the light incident from the light emitting unit toward the upper side of the display unit 110.

Here, the area of the light guide unit 160 may be larger than the area of the display unit 110, and may be smaller than the area of the display unit 110, as the case may be.

17A, the area of the light guide unit 160 is larger than the area of the display unit 110 and can cover the entire surface of the display unit 110. [

In this case, since the light incident from the light emitting portion can be guided to the upper direction of the display portion 110 without loss, the amount of light traveling in the upward direction increases, and the touch recognition can be improved.

17B and 17C, the area of the light guide part 160 is smaller than the area of the display part 110, and a part of the display part 110 can be exposed.

Here, the light guide part 160 may expose an edge area of the display part 110. [

In this case, the light can be concentrated on the upper part of the central area of the display part 110 where the dead zone is liable to occur, and the display part 110 is partially exposed, Can be prevented from deteriorating.

17B and 17C, the light guide unit 160 includes a first light guide unit 160a disposed in a central area of the display unit 110 and a second light guide unit 160b disposed in an edge area of the display unit 110. [ And may include a guide portion 160b.

Here, the area of the first light guide portion 160a may be wider than the area of the second light guide portion 160b.

At this time, a plurality of light emitting units may be disposed on a side surface of the second light guide unit 160b.

The second light guide portion 160b of Figure 17b is disposed on one side of the display portion 110 while the second light guide portion 160b of Figure 17c is provided on the other side of the display portion 110, Dogs can be placed.

18 to 20 are sectional views showing a light emitting portion disposed on a side surface of the light guide portion.

18 to 20, the light guide portion 160 may include an optical plate 161 and a plurality of protrusions 162. [

The optical plate 161 of the light guide unit 160 can guide the incident light to the center of the display unit 110 by totally reflecting the light when the light of the light emitting unit 121 is incident.

The plurality of protrusions 162 protrude from the upper surface of the optical plate 161 so that when the light totally reflected in the optical plate 161 is incident on the optical plate 161, Can be diffused.

The side surface 161a of the optical plate 161 of the light guide section 160 is arranged to face the light emitting surface of the light emitting element 121a of the light emitting section 121 and the light emitting element 121a of the light emitting section 121 121a by a predetermined distance from the light exit surface.

The substrate 121b of the light emitting portion 121 may be positioned below the optical plate 161 of the light guide portion 160. [

The thickness t2 of the light emitting element 121a of the light emitting portion 121 may be equal to the thickness t1 of the optical plate 161 of the light guide portion 160. [

This is because loss of light incident from the light emitting element 121a into the optical plate 161 of the light guide section 160 is small.

The thickness t2 of the light emitting element 121a of the light emitting portion 121 and the thickness t1 of the optical plate 161 of the light guide portion 160 may be different from each other.

18, the side surface 161a of the optical plate 161 of the light guide portion 160 may be a flat surface and may have a concave curved surface shape as shown in Fig.

If the side surface 161a of the optical plate 161 of the light guide unit 160 has a concave curved surface, the loss of light incident from the light emitting device 121a into the optical plate 161 of the light guide unit 160 Can be reduced.

20, the side surface 161a of the optical plate 161 of the light guide portion 160 may be formed with a protrusion covering the upper portion of the light emitting portion 121. On the outer surface of the protrusion, (163) may be formed.

The reason for forming the reflection plate 163 on the outer surface of the projection is to reduce the loss of light incident from the light emitting element 121a into the optical plate 161 of the light guide portion 160.

The thickness t2 of the light emitting element 121a of the light emitting portion 121 may be smaller than the thickness of the optical plate 161 of the light guide portion 160. [

FIG. 21 is a schematic view showing a motion recognition unit recognizing motion of a pointer, and FIG. 22 is a block diagram showing a motion recognition unit.

21 and 22, the motion recognition unit 200 detects the amount of light reflected from a pointer located apart from the display unit of the electronic device 100, and detects the amount of light detected based on the amount of light The motion of the pointer can be extracted, and the operation corresponding to the extracted motion can be performed.

Here, the motion recognition unit 200 can calculate the distance d between each optical sensor module and the pointer based on the electric signal transmitted from the light receiving unit.

Typically, the distance between the optical sensor module and the pointer may be inversely proportional to the amount of reflected light measured at the light receiving portion.

Accordingly, when calculating the distance between each optical sensor module and the pointer at a specific point in time, the motion recognition unit 200 can use the distance between the light emitting unit and the light receiving unit irradiated with light at a specific point in time.

At this time, the motion recognition unit 200 can acquire the distance information between each optical sensor module including the light emitting unit and the light receiving unit and the pointer by a predetermined period.

That is, when a plurality of optical sensor modules provided in the bezel frame unit operate once to acquire distance information between all the optical sensor modules and the pointer, one cycle can be completed.

Here, the motion recognition unit 200 may include a detection unit 210, a noise filter unit 220, a coordinate calculation unit 230, a motion extraction unit 240, and a control unit 250.

Here, the detection unit 210 detects the light amount of the light reflected from the pointer through the light receiving unit, and the noise filter unit 220 can remove the noise light belonging to the wavelength band other than the predetermined wavelength band from the light amount of the detected light have.

The coordinate calculating unit 230 then calculates the X coordinate, Y coordinate, and Z coordinate of the pointer based on the amount of noise-removed light, and the motion extracting unit 240 extracts, based on the coordinates of the pointer, The motion of the pre-stored pointer can be extracted from the motion estimation unit 260. [

The control unit 250 may control the detection unit 210, the noise filter unit 220, the coordinate calculation unit 230, and the motion extraction unit 240 to perform an operation corresponding to the extracted motion.

The present invention configured as described above can accurately and precisely detect the 2D and 3D touch of the pointer without the dead zone by disposing the optical separation unit or the light guide unit.

In addition, since the light of the light emitting unit is diffused to provide a wide touch area, the motion of the pointer located at a remote location can be precisely and accurately extracted, and the corresponding operation can be accurately performed.

Therefore, the small pointer motion can be recognized easily and accurately, so that the reliability of the electronic device can be improved.

23 and 24 are views showing an embodiment of an electronic device for explaining a control method of an electronic device according to the present invention.

23 and 24, an electronic device according to an embodiment of the present invention includes a display unit 110, a bezel frame unit 140, a plurality of light emitting units 121, a plurality of light receiving units 122 An optical isolator 130, a drive controller (not shown), and a motion controller (not shown).

The bezel frame unit 140 is disposed around the display unit 110. The plurality of light emitting units 121 are disposed at a first interval in the bezel frame unit 140 and include a plurality of light receiving units 122, May be disposed at a second interval in the bezel frame portion 140. [

The optical separation unit 130 is disposed in the traveling direction of the light generated from the light emitting unit 121 and transmits the light incident from the light emitting unit 121 to the first light 151 for detecting the 2D touch, And the second light 152 for the second light.

Next, the driving control unit (not shown) may sequentially operate the plurality of light emitting units 121 according to a predetermined time interval.

Here, the drive control unit may sequentially operate clockwise or counterclockwise according to the order in which the plurality of light emitting units 121 are arranged.

At this time, the driving control unit may operate the plurality of light emitting units 121 at a time interval of about 10 to 99 microseconds (μs).

This is because, if the time interval is too long, the pointer coordinates calculation is delayed, the touch recognition is not precise, and the time interval is too fast, the cost can be increased because a circuit design capable of calculating the coordinates of the pointer quickly needs to be added have.

Next, the motion recognition unit (not shown) detects and interpolates the light amount of the first light 151 to calculate the horizontal coordinate, detects the light amount of the second light 152 reflected on the predetermined pointer Calculates the spatial coordinates, extracts the motion of the pointer based on the light amount of the detected light, and performs an operation corresponding to the extracted motion.

Here, the motion recognizing unit includes a detecting unit that detects the amount of light reflected from the pointer through the light receiving unit 122, a noise removing unit that removes noise light belonging to a wavelength band other than a predetermined wavelength band from the light amount of the detected light, A motion extracting unit for extracting the motion of the pointer according to the coordinates of the pointer, a detector for extracting the motion of the pointer, a noise removing unit for extracting the motion of the pointer, And a control unit for controlling the coordinate calculation unit and the motion extraction unit and performing an operation corresponding to the extracted motion.

At this time, the coordinate calculation unit may calculate the spatial coordinates by detecting the light amount of the second light 152 reflected on the predetermined pointer after calculating the horizontal coordinate by detecting and interpolating the light amount of the first light 151. [

In some cases, the coordinate calculation unit may calculate the spatial coordinates by detecting the amount of light of the second light 152 reflected by the predetermined pointer, and then calculate and calculate the horizontal coordinates by detecting and interpolating the light amount of the first light 151 It is possible.

In interpolating the light amount of the first light 151, the coordinate calculation unit can interpolate the light amount of the first light 151 received from the light emitting units 121 located opposite to each other crosswise.

The light receiving unit 122 includes a plurality of first light receiving units 122a arranged between one side of the light emitting unit 121 and the display unit 110 and a plurality of second light receiving units 122a arranged on the other side of the light emitting unit 121. [ And light receiving portions 122b.

Here, the interval between the first light receiving portions 122a adjacent to each other may be narrower than the first interval between the light emitting portions 121. [

This is because it is possible to receive the first light 151 directly from the light emitting portions 121 facing each other without loss.

Further, the interval between the adjacent second light-receiving portions 122b may be wider than the first interval between the light-emitting portions 121. [

This is because the second light 152 emitted from the light emitting portion 121 is reflected by a predetermined pointer and can return light received without loss.

Therefore, the number of the first light receiving portions 122a may be larger than the number of the second light receiving portions 122b, but is not limited thereto.

Further, the number of the first light receiving portions 122a may be larger than the number of the light emitting portions 121.

In some cases, a part of the first light receiving portions 122a may be covered by the light separating portion 130. [

As another example, an optical filter section that transmits light of a specific wavelength band may be disposed on the upper portion of the light receiving section 122. [

The light separation unit 130 may be disposed on the light emitting unit 121 so as to cover the light emitting unit 121, but the present invention is not limited thereto.

In this way, in the electronic device configured as described above, first, the drive control unit can sequentially operate the plurality of light emitting units 121 according to a predetermined time interval.

The light separating unit 130 of the electronic device separates the light incident from the light emitting unit 121 into the first light 151 for sensing the 2D touch and the second light 152 for sensing the 3D touch .

The first light receiving unit 122a may receive the first light 151 for 2D touch sensing directly.

Next, the motion recognition unit can calculate horizontal coordinates by detecting and interpolating the light amount of the received first light 151.

The second light receiving unit 122b may receive the second light 152 reflected by the predetermined pointer among the second lights 152 for 3D touch sensing.

Next, the motion recognition unit calculates the spatial coordinates by detecting the light amount of the received second light 152, extracts the motion of the pointer based on the light amount of the detected light, and performs an operation corresponding to the extracted motion Can be performed.

25A and 25B show light amount data of the first light for sensing the 2D touch sensed by the light receiving unit, FIG. 25A shows light amount data when there is no touch recognition, FIG. 25B shows light amount data when touch recognition is performed Giving.

As shown in Fig. 25A, when there is no touch recognition, the light receiving unit can receive the light that is directly emitted from the opposed light emitting unit, and can calculate the light amount of the first light, which is motion or not.

Then, as shown in Fig. 25B, if there is touch recognition, a change in the amount of light of the first light received by the light receiving unit, such as the area A, may appear.

Here, the motion recognition unit can recognize a precise touch by calculating the light amount data by interpolating the light amount of the first light with respect to the opposed light emitting units crosswise.

For example, the light amount data of FIG. 25B shows light amount data when a touch of a pointer located at a distance of about 50 mm is recognized.

26A and 26B show light amount data of the second light for sensing the 3D touch sensed by the light receiving unit, FIG. 26A shows light amount data when there is no touch recognition, FIG. 26B shows light amount data when touch recognition is performed Giving.

As shown in Fig. 26A, when there is no touch recognition, the light-receiving unit does not have reflected light reflected from the pointer, so that there is no light to be received, and light amount data of the second light may be zero if motion is detected.

As shown in Figs. 26B and 26C, if there is touch recognition, the reflected light can be received by the light receiving portion like the B region.

Here, in the motion recognition unit, the light amount of the reflected light is calculated, and the coordinates on the space can be recognized based on the light amount.

That is, the motion recognition unit can recognize the space touch by calculating the size, distance, and position of the pointer based on the light amount data of the reflected light.

For example, the light amount data of FIG. 26B shows light amount data when a pointer touch is located at a distance of about 7 cm, and the light amount data of FIG. 26C shows a touch of a pointer located at a distance of about 10 cm The light amount data of the time is shown.

27 is a flowchart for explaining a control method of an electronic device according to the present invention.

As shown in Fig. 27, the drive control unit of the electronic apparatus sequentially operates the plurality of light emitting units according to a predetermined time interval.

That is, the electronic device can emit a single light in a time division manner at the outer periphery of the display portion.

Here, the drive control unit can sequentially operate clockwise or counterclockwise according to the order in which the plurality of light emitting units are arranged.

At this time, the drive control unit can operate the plurality of light emitting units at time intervals of about 10-99 microseconds (㎲).

This is because, if the time interval is too long, the pointer coordinates calculation is delayed, the touch recognition is not precise, and the time interval is too fast, the cost can be increased because a circuit design capable of calculating the coordinates of the pointer quickly needs to be added It is because.

The optical separation unit of the electronic device may divide the light incident from the light emitting unit into a first light for sensing the 2D touch and a second light for sensing the 3D touch.

That is, the electronic device can divide a single light emitted from the outside of the display portion into a plurality of lights.

Then, the light receiving portion of the electronic device can directly receive the first light for 2D touch sensing from the opposed light emitting portions.

That is, the electronic device can directly receive, of the divided lights, light incident horizontally on the display unit.

Next, the motion recognition unit of the electronic device can calculate horizontal coordinates by detecting and interpolating the light amount of the received first light.

Here, when the light amount of the first light is interpolated, the amount of light of the first light received from the light emitting portions facing each other can be interpolated with a cross.

That is, the electronic device can interpolate the amount of light that is directly incident horizontally in a cross and recognize it as horizontal coordinates.

In some cases, when the first light for 2D touch detection is directly received, the noise light belonging to the wavelength band other than the predetermined wavelength band can be removed.

The light receiving unit of the electronic device may receive the second light reflected from the predetermined pointer among the second lights for 3D touch sensing.

That is, the electronic device can receive the reflected light of the light that is not incident horizontally on the display portion among the divided light.

In some cases, when the reflected light of the second light for 3D touch sensing is received, the noise light belonging to the wavelength band other than the preset wavelength band can be removed.

Then, the motion recognition unit of the electronic apparatus detects the light amount of the received second light, calculates the spatial coordinates, extracts the motion of the pointer based on the light amount of the detected light, and performs an operation corresponding to the extracted motion can do.

That is, the electronic device can recognize the position on the space of the pointer based on the light amount of the received reflected light.

Next, the electronic device confirms whether there is a termination request for the touch recognition operation, and if there is a termination request, ends the touch recognition operation.

If there is no end request, the touch recognition operation can be continuously repeated.

As described above, according to the present invention, a light separation unit or a light guide unit for separating the light incident from the light emitting unit into the first light for 2D touch sensing and the second light for 3D touch sensing is disposed, 2D and 3D touch of the touch panel can be accurately and precisely detected.

In addition, since the light of the light emitting unit is diffused to provide a wide touch area, the motion of the pointer located at a remote location can be precisely and accurately extracted, and the corresponding operation can be accurately performed.

Therefore, the small pointer motion can be recognized easily and accurately, so that the reliability of the electronic device can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: Electronic device 110:
130: optical isolator 140: bezel frame part
121: light emitting portion 122:
151: first light 152: second light
160: Light guide portion

Claims (20)

A display unit;
A bezel frame portion surrounding the periphery of the display portion;
A plurality of light emitting parts arranged at a first interval in the bezel frame part;
A plurality of light-receiving portions disposed at a second interval in the bezel frame portion;
A light separating unit located in a traveling direction of the light emitted from the light emitting unit and separating the light incident from the light emitting unit into a first light for sensing a 2D touch and a second light for sensing a 3D touch;
A drive control unit for sequentially operating the plurality of light emitting units according to a predetermined time interval; And,
Calculating a horizontal coordinate by detecting and interpolating a light amount of the first light and calculating a spatial coordinate by detecting a light amount of the second light reflected on the predetermined pointer when a predetermined pointer is positioned in front of the display unit; And a motion recognition unit for extracting a motion of the pointer based on the light amount of the detected light and performing an operation corresponding to the extracted motion. Device. The electronic device as claimed in claim 1, wherein the drive control unit sequentially operates clockwise or counterclockwise according to the order in which the plurality of light emitting units are arranged. The electronic device according to claim 1, wherein the drive control unit operates the plurality of light emitting units at a time interval of 10 to 99 microseconds. 2. The method of claim 1,
A detecting unit that detects the amount of light reflected from the pointer through the light receiving unit;
A noise removing unit for removing noise light belonging to a wavelength band other than a predetermined wavelength band from the light amount of the detected light;
A coordinate calculator for calculating an X coordinate, a Y coordinate, and a Z coordinate value of the pointer based on the noise-removed light amount;
A motion extracting unit for extracting a motion of the pointer according to coordinates of the pointer; And,
And a controller for controlling the detecting unit, the noise removing unit, the coordinate calculating unit, and the motion extracting unit, and performing an operation corresponding to the extracted motion. 5. The apparatus according to claim 4, wherein the coordinate calculator calculates horizontal coordinates by detecting and interpolating the light amount of the first light, and when a predetermined pointer is positioned in front of the display unit, And calculating spatial coordinates by detecting the light amount of the light. 6. The method according to claim 5, wherein the coordinate calculation unit interpolates the amount of light of the first light received from the light emitting units facing each other by a cross when interpolating the light amount of the first light. Respectively. The light-emitting device according to claim 1,
A plurality of first light receiving portions arranged between one side of the light emitting portion and the display portion,
And a plurality of second light receiving portions arranged on the other side of the light emitting portion. 8. The electronic device according to claim 7, wherein a distance between the adjacent first light-receiving portions is narrower than a first distance between the light-emitting portions. 8. The electronic device according to claim 7, wherein the interval between the adjacent second light-receiving portions is wider than the first interval between the light-emitting portions. 8. The electronic device according to claim 7, wherein the number of the first light receiving portions is larger than the number of the second light receiving portions. 8. The electronic device according to claim 7, wherein the number of the first light receiving portions is larger than the number of the light emitting portions. 8. The electronic device according to claim 7, wherein a part of the first light receiving portions is covered by the light separating portion. The electronic device with 2D and 3D touch functions according to claim 1, wherein an optical filter section for transmitting light of a specific wavelength band is disposed on the light receiving section. 2. The electronic device according to claim 1, wherein the optical isolator is disposed above the light emitting unit to cover the light emitting unit. The electronic device according to claim 1, wherein the amount of light of the first light for sensing the 2D touch and the light amount of the second light for sensing the 3D touch are different from each other. The electronic device according to claim 1, wherein the first light for the 2D touch sensing is parallel to a screen of the display unit. The electronic device as claimed in claim 1, wherein the second light for 3D touch sensing progresses in a direction inclined at a predetermined angle with respect to a screen of the display unit. A method of controlling an electronic device having a 2D and 3D touch function including a plurality of light emitting units, a light receiving unit, and a light separating unit,
Sequentially operating the plurality of light emitting units according to a predetermined time interval;
Separating the light incident from the light emitting unit into a first light for sensing a 2D touch and a second light for sensing a 3D touch;
Directly receiving the first light for the 2D touch sensing;
Calculating horizontal coordinates by detecting and interpolating the light amount of the received first light;
Receiving a second light reflected from a predetermined pointer among the second lights for the 3D touch sensing; And,
Extracting a motion of the pointer on the basis of the amount of light of the detected light, and performing an operation corresponding to the extracted motion by calculating a space coordinate by detecting an amount of light of the received second light, And a control unit for controlling the electronic device. The method of claim 18, wherein calculating the horizontal coordinate by detecting and interpolating the light amount of the received first light comprises: calculating a horizontal coordinate by interpolating a light amount of the first light received from the light- And interpolating the second and third touch functions with a cross. The method as claimed in claim 18, wherein the step of directly receiving the first light for the 2D touch sensing and the second light reflected from the predetermined pointer among the second lights for sensing the 3D touch comprises: A method for controlling an electronic device having a 2D and 3D touch function, characterized by removing noise light belonging to a wavelength band other than a predetermined wavelength band when receiving the first light and the second light.

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