KR101557950B1 - Display apparatus and display command input apparatus - Google Patents

Abstract

The present invention relates to a display device and a display command input device capable of detecting a position and an angle of an object, the display device comprising: a display panel; A support for supporting the display panel at a predetermined height from the floor; And a position detection sensor installed at the support portion toward the front of the display panel and sensing a position of the object, wherein the position detection sensor comprises: a light emitting element for emitting detection light to the object; And a light receiving unit that receives reflected light reflected from the object.

Description

[0001] The present invention relates to a display apparatus and a display command input apparatus,

The present invention relates to a display device and a display command input device, and more particularly, to a display device and a display command input device capable of sensing the position and angle of an object.

In general, non-contact sensors have been developed that enable the detection of the position and angle of an object using cameras or various non-contact optical sensors. For example, motion recognition can be implemented using an image sensor (camera), and the image sensor extracts a plurality of images and performs image processing in the motion recognition process.

The LEAP Motion technology is a technology that incorporates IR camera based position sensing in a PC. Because it uses a camera, the algorithm is complicated and the driving speed is different from the user's motion.

In addition, since the camera must be located at the keyboard position, it is difficult to accurately recognize the distance between the PC and the human hand. In other words, the lip motion technique can recognize the X and Z directions when the plane on which the keyboard of the PC is placed is referred to as the XY plane and the direction in which the user views the monitor is the X axis in the Y axis direction , There is a problem that it is difficult to accurately recognize a large movement in the Y direction.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a position sensing sensor having a plurality of light- And a display device and a display command input device that enable accurate and quick determination of the position and angle of an object even at low power using a photodiode. However, these problems are exemplary and do not limit the scope of the present invention.

According to an aspect of the present invention, there is provided a display device including: a display panel; A support for supporting the display panel at a predetermined height from the floor; And a position detection sensor installed at the support portion toward the front of the display panel and sensing a position of the object, wherein the position detection sensor comprises: a light emitting element for emitting detection light to the object; And a light receiving unit that receives reflected light reflected from the object.

According to an aspect of the present invention, the supporting portion may include: a bezel portion surrounding the screen of the display panel; And a support leg for supporting the bezel at a predetermined height. The position sensor may be installed on a front surface of the bezel or the support leg.

According to an aspect of the present invention, the light emitting element is an infrared LED, and the light receiving portion includes: a first light receiving portion having a first light receiving region so as to receive reflected light reflected from the object; And a second light receiving portion having a second light receiving region so as to receive reflected light reflected from the object.

Further, according to an aspect of the present invention, a portion of the first light receiving region of the first light receiving portion and a portion of the second light receiving region of the second light receiving portion may overlap with each other.

In the display device according to the present invention, the position information of the object is output from the first light-receiving unit, the position information of the object is output from the second light-receiving unit, And a distance calculating unit for calculating a distance value.

The display device according to an embodiment of the present invention may further include a second light receiving unit that receives position and angle signals of the first object from the first light receiving unit and outputs position information of the first object, The first object and the second object are separated from each other when the position information of the first object and the position information of the second object are out of the reference range, And a multi-position recognition unit for outputting a multi-position value recognizing the multi-position value.

According to an aspect of the present invention, the light-receiving unit further includes a third light-receiving unit having a third light-receiving area so as to receive reflected light reflected from the object, wherein the first light- , And the second light receiving portion and the third light receiving portion are equiangularly arranged at an angle of 120 degrees.

According to an aspect of the present invention, the light-receiving unit includes: a third light-receiving unit having a third light-receiving area so as to receive reflected light reflected from the object; And a fourth light receiving portion having a fourth light receiving region so as to receive reflected light reflected from the object, wherein the first light receiving portion, the second light receiving portion, the third light receiving portion, And the fourth light receiving portions may be equiangularly arranged at an angle of 90 degrees.

According to an aspect of the present invention, the light receiving unit may include a plurality of first partition walls having a height at which a light passing amount varies according to at least an angle, and having a plurality of first slits arranged in parallel in a first direction, A first photodiode capable of sensing a light amount of a first region shifted to one side of light passing through the first slits and a light amount of a second region shifted to the other side; And a plurality of second slits provided in parallel with the first photodiodes and having a height at which a light passing amount can be changed according to at least an angle and arranged in parallel in a second direction, And a second photodiode capable of detecting the amount of light in the third region shifted to one side of the light passing through the two slits and the amount of light in the fourth region shifted to the other side.

According to an aspect of the present invention, the first photodiode may be provided below the first partition walls, and may be disposed offset toward one side with respect to a center line of each of the first slits, A first eccentric array for outputting a signal; And a second eccentric array provided below the first partitions and biased toward the other side with respect to a center line of each of the first slits and outputting a signal of different intensity according to the amount of light.

According to another aspect of the present invention, there is provided an apparatus for inputting a display command, the apparatus comprising: a display panel mounted on a support for supporting a display panel at a predetermined height from a floor; A light emitting element for emitting light; And a light receiving unit installed on the support unit and receiving reflected light reflected from the object.

According to some embodiments of the present invention as described above, a user can easily input a command in a non-contact manner while viewing a screen, and can accurately and quickly determine the position and angle of an object with low power using a photodiode And the parts are inexpensive, so that the unit cost of the product can be lowered, and the durability and the performance of the product can be improved. Of course, the scope of the present invention is not limited by these effects.

1 is a front view showing a display device according to some embodiments of the present invention.
2 is a block diagram conceptually showing the display device of Fig.
3 is a perspective view showing a position sensor of the display device of FIG.
4 is a cross-sectional view showing an example of a position detecting sensor of the display device of Fig.
5 is a plan view showing a first light receiving portion of the position detecting sensor of FIG.
6 is a cross-sectional view conceptually showing a VI-VI cut plane of the first light receiving portion of Fig. 5;
FIG. 7 is a cross-sectional view conceptually showing a VII-VII cross section of the first light receiving section of FIG. 5;
8 and 9 are side views showing the operation of the display device of FIG.
10 is a front view showing a display device according to some other embodiments of the present invention.
11 is a perspective view showing a position sensor of the display device of FIG.
12 is a perspective view showing a position detection sensor of a display device according to still another embodiment of the present invention.

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

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, if the element is inverted in the figures, the elements depicted as being on the upper surface of the other elements will have a direction on the lower surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

1 is a front view showing a display device 100 according to some embodiments of the present invention. 2 is a block diagram conceptually showing the display device 100 of FIG.

1 and 2, a display device 100 according to some embodiments of the present invention mainly includes a display panel 101, a support portion 102, and a position detection sensor 120 can do.

Here, the display panel 101 may be a cathode ray tube (CRT) panel, a liquid crystal display (LCD) panel, a plasma display panel (PDP) or the like, which can display various images or images and serve as a computer monitor, Panel, an organic light emitting diode (OLED) panel, an active matrix organic light emitting diode (AMOLED) panel, and a beam projector panel.

1 and 2, the support portion 102 may be a structure that supports the display panel 101 at a predetermined height from the bottom surface G. [

The supporting part 102 includes a bezel part 102-1 surrounding the screen of the display panel 101 and a supporting leg part 102-2 supporting the bezel part 102-1 at a constant height ).

More specifically, for example, the bezel 102-1 may be a rectangular ring-shaped structure surrounding the rim of the display panel 101 and the rear surface of the display panel 102, The bezel unit 102-1 may be a neck and a pedestal provided below the bezel 102-1. As shown in FIG. 1, the receiving portion may be a flat panel shape that can be seated on the bottom surface G or the ground. In addition, although not shown, the receiving portion may include various brackets or stents It may be formed in a furniture form.

The bezel 102-1 and the support leg 102-2 are not limited to those shown in FIGS. 1 and 2, but may be designed in various shapes and types, and the support leg 102 -2 may be omitted when the display panel 101 is in the form of a wall.

The bezel 102-1 and the support leg 102-2 may be made of a metal or a synthetic resin and may be formed by press molding or molding, and various electronic components such as a power supply device, Parts can be installed.

1, the position sensor 120 may be disposed on the support portion (not shown) toward the front of the display panel 101 so that a user viewing the display panel 101 may input various commands. 102, and may be a non-contact type sensor capable of sensing the position of a subject, that is, a part of the user's hand or the like.

More specifically, for example, as shown in FIGS. 1 and 2, the position sensing sensor 120 may be installed at a lower center of the bezel 102-1.

Therefore, the user does not touch the screen, but when viewed with the user's eyes, the screen can be intuitively controlled in the air as if the user touches the screen with the hand, even in the air, without touching the screen with the hand.

10 is a front view showing a display device 200 according to some other embodiments of the present invention.

Here, the display device 200 according to some other embodiments of the present invention may be configured such that the mounting position of the position sensing sensor 120 is limited to the lower center of the bezel 102-1 of Figs. 1 and 2 But may be installed at the upper center of the bezel 102-1 as shown in FIG.

In addition, although not shown, the position sensing sensor 120 may be installed on the front surface of the support leg 102-2 and may be mounted on the bezel 102-1, And may be installed on one side or both sides of the frame.

1 and 2, the position sensing sensor 120 includes a light emitting device 20 for emitting detection light to the object, and a light emitting device 20 for emitting reflected light (for example, L1) of the light-receiving portion.

3 is a perspective view showing the position detection sensor 120 of the display device 100 of FIG. 4 is a cross-sectional view showing an example of the position detecting sensor 120 of the display device 100 of FIG. 3, FIG. 5 is a plan view showing the first light receiving portion 31 of the position detecting sensor 120 of FIG. 3 6 is a cross-sectional view conceptually showing a VI-VI cut plane of the first light receiving unit 31 of FIG. 5, and FIG. 7 is a cross-sectional view conceptually showing a VII-VII cut plane of the first light receiving unit 31 of FIG.

3 to 7, the position detecting sensor 120 of the display device 100 may be described in more detail. The light emitting device 20 may be an infrared LED, (31) having a first light receiving area (A1) so as to receive reflected light (L1) reflected from the object and a second light receiving area (31) for receiving the reflected light (L1) reflected from the object, And a second light receiving portion 32 having a second light receiving portion A2.

Here, a part of the first light receiving area A1 of the first light receiving part 31 and a part of the second light receiving area A2 of the second light receiving part 32 may be an overlap area A3 have.

On the other hand, the light emitting device 20 may be a light emitting member that is installed toward the user on the support part 102 and irradiates detection light to an object.

More specifically, for example, the light emitting device 20 may include an infrared LED (Light Emitting Diode) installed at the lower center of the bezel 102-1 and having an emission axis C in the direction toward the user, Lt; / RTI > However, the light emitting device 20 is not limited to the infrared LED.

That is, the light emitting device 20 may be made of a semiconductor, as shown in FIG. 3 and FIG. For example, LEDs emitting blue, green, red, and yellow light, and LEDs emitting ultraviolet light or infrared light, which are made of a nitride semiconductor, can be applied. The nitride semiconductor is represented by a general formula Al _x Ga _y In _z N (0? X? 1, 0? Y? 1, 0? Z? 1, x + y + z = 1).

The light emitting device 20 can be formed by epitaxially growing nitride semiconductors such as InN, AlN, InGaN, AlGaN, and InGaAlN on a sapphire substrate for growth or a silicon carbide substrate by a vapor phase growth method such as MOCVD To grow. The light emitting device 20 may be formed using semiconductors such as ZnO, ZnS, ZnSe, SiC, GaP, GaAlAs, and AlInGaP in addition to the nitride semiconductor. These semiconductors can be stacked in the order of an n-type semiconductor layer, a light emitting layer, and a p-type semiconductor layer. The light emitting layer (active layer) may be a laminated semiconductor having a multiple quantum well structure or a single quantum well structure or a laminated semiconductor having a double hetero structure. In addition, the light emitting device 20 can be selected to have an arbitrary wavelength depending on the application such as display use and illumination use.

Here, as the growth substrate, an insulating, conductive or semiconductor substrate may be used if necessary. For example, the growth substrate may be sapphire, SiC, Si, MgAl 2 O 4, MgO, LiAlO 2, LiGaO 2, GaN. A GaN substrate, which is a homogeneous substrate, is preferable for epitaxial growth of a GaN material, but a GaN substrate has a problem of high production cost due to its difficulty in manufacturing.

Sapphire and silicon carbide (SiC) substrates are mainly used as the different substrates. Sapphire substrates are more utilized than expensive silicon carbide substrates. When using a heterogeneous substrate, defects such as dislocation are increased due to the difference in lattice constant between the substrate material and the thin film material. Also, due to the difference in the thermal expansion coefficient between the substrate material and the thin film material, warping occurs at a temperature change, and warping causes a crack in the thin film. This problem may be reduced by using a buffer layer between the substrate and the GaN-based light emitting laminate.

In addition, the substrate for growth may be completely or partially removed or patterned in order to improve the optical or electrical characteristics of the LED chip before or after the growth of the LED structure.

For example, in the case of a sapphire substrate, the substrate can be separated by irradiating the laser to the interface with the semiconductor layer through the substrate, and the silicon or silicon carbide substrate can be removed by a method such as polishing / etching.

Another supporting substrate may be used for removing the growth substrate. In order to improve the light efficiency of the LED chip on the opposite side of the growth substrate, the supporting substrate may be bonded using a reflective metal, As shown in FIG.

In addition, patterning of the growth substrate improves the light extraction efficiency by forming irregularities or slopes before or after the LED structure growth on the main surface (front surface or both sides) or side surfaces of the substrate. The size of the pattern can be selected from the range of 5 nm to 500 μm and it is possible to make a structure for improving the light extraction efficiency with a rule or an irregular pattern. Various shapes such as a shape, a column, a mountain, a hemisphere, and a polygon can be adopted.

In the case of the sapphire substrate, the crystals having a hexagonal-rhombo-cubic (Hexa-Rhombo R3c) symmetry have lattice constants of 13.001 and 4.758 in the c-axis direction and the a-axis direction, respectively, and have C plane, A plane and R plane. In this case, the C-plane is relatively easy to grow the nitride film, and is stable at high temperature, and thus is mainly used as a substrate for nitride growth.

Another material of the growth substrate is a Si substrate, which is more suitable for large-scale curing and relatively low in cost, so that mass productivity can be improved.

In addition, since the silicon (Si) substrate absorbs light generated from the GaN-based semiconductor and the external quantum efficiency of the light emitting device is lowered, the substrate may be removed as necessary, and Si, Ge, SiAl, A support substrate such as a metal substrate is further formed and used.

When a GaN thin film is grown on a different substrate such as the Si substrate, the dislocation density increases due to the lattice constant mismatch between the substrate material and the thin film material, and cracks and warpage Lt; / RTI > The buffer layer may be disposed between the growth substrate and the light emitting stack for the purpose of preventing dislocation and cracking of the light emitting stack. The buffer layer also functions to reduce the scattering of the wavelength of the wafer by adjusting the degree of warping of the substrate during the growth of the active layer.

Herein, the buffer layer may be made of Al _x In _y Ga _1-xy N (0? X? 1, 0? _Y? 1, x + y? 1), in particular GaN, AlN, AlGaN, InGaN or InGaNAlN. Materials such as ZrB2, HfB2, ZrN, HfN and TiN can also be used as needed. Further, a plurality of layers may be combined, or the composition may be gradually changed.

Although not shown, the light emitting device 20 may be in the form of a flip chip having a signal transmitting medium such as a bump, a pad, or a solder. In addition, the first and second terminals The light emitting elements to which the bonding wire is applied, or to which the bonding wire is applied to only the first terminal or the second terminal partially can all be applied.

In addition, one light emitting element 20 may be provided on the support portion 102, or a plurality of light emitting elements 20 may be provided on the support portion 102.

In addition, the light emitting device 20 can be applied to all types of light emitting devices such as various lamps such as an infrared lamp, an ultraviolet lamp, a fluorescent lamp, and a bulb.

3, the light receiving unit 30 may include a first light receiving unit 31 and a second light receiving unit 32, which are arranged in the support unit 102 with a plurality of arrays .

More specifically, for example, as shown in FIGS. 3 and 4, the first light receiving portion 31 is provided on the support portion 102, and can receive the first reflected light L1 reflected from the object Receiving area A1 of the first light receiving range angle K1 with reference to the first light receiving axis C1.

The second light receiving portion 32 is provided on the support portion 102 and is parallel or perpendicular to the first light receiving axis C1 so as to receive the first reflected light L1 reflected from the object. Receiving area A2 of the second light receiving range angle K2 on the basis of the second light receiving axis C2 that can be received.

1 and 2, a portion of the first light receiving region A1 of the first light receiving section 31 and a portion of the second light receiving region A2 of the second light receiving section 32 May be an overlap area A3 overlapping each other.

Here, the light emitting device 20 may be an infrared LED having a light emitting axis C parallel or intersecting with the first light receiving axis C1.

3 and 4, the light emitting device 20 includes the first light receiving region A1 of the first light receiving section 31 and the second light receiving region A1 of the second light receiving section 32, (31) is provided between the first light receiving portion (31) and the second light receiving portion (32) so that the detection light can be uniformly irradiated to the light receiving region (A2), and the first light receiving portion And the second light receiving portion 32 may be installed in the other side of the light emitting device 20. The light emitting device 20 may be mounted on the first side of the light emitting device 20,

However, the positions of the light emitting element 20, the first light receiving section 31 and the second light receiving section 32 are not limited to this, and may be, for example, the positions of the first light receiving section 31 and the second light receiving section 32. [ The first light receiving portion 31 and the second light receiving portion 32 may be triangularly arranged such that the light emitting element 20 and the first light receiving portion 31 and the second light receiving portion 32 form a triangle.

The mounting position and shape of the light emitting element 20 and the first light receiving section 31 and the second light receiving section 32 can be changed depending on the shape of the supporting section 102, It can therefore vary greatly.

2, the display apparatus 100 according to some embodiments of the present invention may further include a distance calculating unit 40 and a multi-position recognizing unit 50. [

More specifically, for example, the distance calculating unit 40 receives the position and angle signal of the first object from the first light receiving unit 31 so as to measure a more accurate height of the object, And outputs the position information of the second object by receiving the position and angle signal of the second object from the second light receiving unit 32. The position information of the first object and the position of the second object Or a circuit or a program for calculating a distance value between the first object and the second object by using a trigonometric function when the information is close to the reference range.

Here, the trigonometric function refers to the case where a coordinate system having X and Y axes is drawn with O as an origin on a plane, and then an event connecting the point having the coordinate of the coordinate system with the origin and the angle of the sine, cosine, tangent, secant, The distance between the first light receiving portion 31 and the second light receiving portion 32 is known and the distance of the object can be accurately calculated when the angle of the object is known.

Accordingly, since the intensity of the reflected light reflected from the surface of the object can be varied depending on the state of the surface, conventionally, only the intensity of the reflected light reflected from the object is used to estimate the height of the object inaccurately, By using the display device 100, the distance of the object can be determined very accurately through the trigonometric function.

The multi-position recognition unit 50 receives the position and angle signal of the first object from the first light receiving unit 31 and outputs the position information of the first object. The second light receiving unit 32, When the position information of the first object and the position information of the second object are out of a reference range, the position information of the first object and the position information of the second object, And a microprocessor, a circuit, or a program that outputs a multi-position value that the second object recognizes as being separated from each other.

For example, the case where the position information of the first object and the position information of the second object are out of the reference range means that the angular line of the first object measured by the first light receiving unit 31, The angle lines of the second object measured by the second object 32 do not intersect with each other.

2, the distance calculating unit 40 and the multi-position recognizing unit 50 may be installed in the supporting unit 102, and the distance calculating unit 40 and the multi- The multi-position recognition unit 50 may be included in any type of computer 60 or an information terminal, which may be connected to the display device 100 of the present invention, in the form of a separate microprocessor, circuit, or program.

In addition, the distance calculating unit 40 and the multi-position recognizing unit 50 are a kind of control device capable of outputting a position signal according to a sensing area of the object according to a signal sensed by the light receiving unit 30, Various types of electronic components such as various circuits, a microprocessor, a semiconductor device, a computer, an arithmetic unit, a calculator, an MCU (Machine Control Unit), and a CPU (Central Processing Unit).

5 is a plan view showing the first light receiving portion 31 of the display device 100 of FIG. 6 is a cross-sectional view conceptually showing a V-V cut plane of the first light receiving unit 31 of FIG. 5, and FIG. 7 is a cross-sectional view conceptually showing a VI-VI cut plane of the first light receiving unit 31 of FIG.

5, the first light receiving portion 31 of the display device 100 according to some embodiments of the present invention may receive reflected light L1 reflected from the object by the detection light As the light receiving device, for example, it may be a photo diode.

The photodiode may be a kind of optical sensor that converts optical energy into electrical energy to obtain an electrical signal (current or voltage) from the optical signal, and may be a semiconductor device provided with a photodetection function at the junction of the diode.

Here, the photodiode basically utilizes the principle that the conductivity of the diode is modulated in accordance with the optical signal by generating excess electrons or holes by photon absorption. That is, the current of the photodiode essentially varies with the optical generation rate of the carrier, and this characteristic can provide a useful device for converting an optical signal that changes over time into an electrical signal.

5, the first light receiving unit 31 using the photodiode includes an X-axis sensor 31-1 capable of sensing an angle of the object in the X-axis direction and an X- And a Y-axis sensor 31-2 capable of sensing the angle of the Y-axis direction of the M-axis.

More specifically, for example, the X-axis sensor 31-1 may include a first photodiode PD1, the Y-axis sensor 31-2 may include a second photodiode PD2, . ≪ / RTI >

6, the first photodiode PD1 includes a plurality of first photodiodes PD1 having a height H capable of varying the amount of light passing therethrough according to at least an angle, It is possible to detect the amount of light of the first area shifted to one side of the light passing between the first slits S1 and the amount of light of the second area shifted to the other side using the first partitions W1 having the slits S1 Lt; RTI ID = 0.0 > photodiodes. ≪ / RTI >

Also, as shown in FIG. 6, the first photodiode PD1 may include a first eccentric array PD1a and a second eccentric array PD1b.

The first eccentric array PD1a is installed below the first partition walls W1 and biased to one side with respect to the center line CL of each of the first slits S1, It is possible to output signals of different intensities according to the amount of light.

The second eccentric array PD1b is provided below the first partition W1 and is disposed to be offset toward the other side with respect to the center line CL of each of the first slits S1, A signal of a different intensity can be output.

6, when the reflected light L1 reflected from the object passes through a plurality of the first slits S1 at an angle shifted to one side, the first partition W1, A relatively larger amount of light can reach the second eccentric array PD1b provided on the other side than the first eccentric array PD1a installed on one side.

That is, as the angle of the reflected light L1 reflected from the object is shifted to one side, a greater amount of light can be output to the second eccentric array PD1b than to the first eccentric array PD1a .

Therefore, the determining unit 30, which will be described later, can determine the X-axis angle of the object using the output difference of the relative electrical signals of the first eccentric array PD1a and the second eccentric array PD1b.

7, the second photodiode PD2 includes a plurality of second photodiodes PD1 and PD2, each of which has a height H capable of varying the amount of light passing therethrough according to at least an angle, The amount of light of the first region shifted to one side of the light passing between the second slits S2 and the amount of light of the second region shifted toward the other side are detected using the second partitions W2 having the slits S2 Lt; RTI ID = 0.0 > photodiodes. ≪ / RTI >

In addition, as shown in FIG. 7, the second photodiode PD2 may include a first eccentric array PD2a and a second eccentric array PD2b.

The first eccentric array PD2a is installed below the second partition walls W2 and is biased to one side with respect to the center line CL of each of the second slits S2, It is possible to output signals of different intensities according to the amount of light.

The second eccentric array PD2b is installed below the second partition walls W2 and is biased to the other side with respect to the center line CL of each of the second slits S2, A signal of a different intensity can be output.

7, when the reflected light L1 reflected from the object passes through a plurality of the second slits S2 at an angle shifted to one side, the second partition W2, A relatively larger amount of light can reach the second eccentric array PD2b provided on the other side than the first eccentric array PD2a provided on one side.

That is, as the angle of reflected light L1 reflected from the object is shifted to one side, a greater amount of light can be output to the second eccentric array PD2b than to the first eccentric array PD2a .

Therefore, the determination unit 30 to be described later determines the Y-axis angle of the object M using the output difference of the relative electrical signals of the first eccentric array PD2a and the second eccentric array PD2b .

The angle of the object can be finally calculated by summing the X-axis angle and the Y-axis angle of the object thus determined.

Figs. 8 and 9 are side views showing the operation process of the display device 100 of Fig.

8 and 9, an operation process of the display apparatus 100 according to some embodiments of the present invention will be described by way of example. First, as shown in FIG. 8, The plurality of first light receiving portions 31 and the second light receiving portions 32 of the position detecting sensor 120 described above emit light from the light emitting element 20 when the hands are moved up and down in front of the light emitting device 100 It is possible to receive reflected light from the object moving by the detected light and to sense the precise position of the object by using the distance calculating unit 40 and the multi-position recognizing unit 50 described above.

9, when the user moves his / her hand in the forward and backward directions in front of the display device 100, the plurality of first light receiving portions 31 and the plurality of second light receiving portions 31 of the position detecting sensor 120 described above, The second light receiving section 32 can receive the reflected light from the object moving by the detection light emitted from the light emitting element 20 and the distance calculating section 40 and the multiple position recognizing section 50 described above So that the accurate distance of the object can be detected.

Therefore, the user does not touch the screen, but when viewing with the user's eyes, it is possible to intuitively control the screen in the air as if the user touches the screen with the hand,

11 is a perspective view showing a display device 200 according to some other embodiments of the present invention.

11, the display device 200 according to some other embodiments of the present invention may be applied to the support portion 102 in addition to the first light receiving portion 31 and the second light receiving portion 32 described above Which is parallel to or intersecting with the first light receiving axis (C1) so as to receive the first reflected light (L1) or the second reflected light (L2) reflected from the first object or the second object, And a third light receiving portion 33 having a third light receiving region of a third light receiving range angle with respect to the optical axis C3.

Here, the first light-receiving unit 31, the second light-receiving unit 32, and the third light-receiving unit 33 are disposed on the upper side of the light emitting device 20 so that calculation of the trigonometric function or multi- , They can be equally spaced at an angle of 120 degrees.

Therefore, the display device 200 according to some other embodiments of the present invention may be configured such that the first light receiving unit 31, the second light receiving unit 32, and the third light receiving unit 33, It is possible to recognize multiple positions in all the angles in the front-rear direction as well as in the left-right direction. The number of the light-receiving portions to be installed is not limited to the above-described two and three.

12 is a perspective view showing a display device 300 according to still another embodiment of the present invention.

12, in addition to the first light receiving portion 31 and the second light receiving portion 32 described above, the display device 300 according to still another embodiment of the present invention includes the support portion 102, Which is parallel to or intersecting with the first light receiving axis C1 so as to receive the first reflected light L1 or the second reflected light L2 reflected from the first object or the second object, A third light receiving portion 33 having a third light receiving region of a third light receiving angle range with reference to the light receiving axis C3 and a second light receiving portion 33 provided on the supporting portion 102 and reflected from the first object or the second object The fourth light receiving area of the fourth light receiving range angle on the basis of the fourth light receiving axis C4 which can be parallel or intersecting with the first light receiving axis C1 so as to receive the first light receiving area L1 or the second reflected light L2, And a fourth light receiving portion 34 having a light receiving portion.

Here, the first light-receiving unit 31, the second light-receiving unit 32, the third light-receiving unit 33, and the third light-receiving unit 33 are arranged on the basis of the light emitting device 20 so that calculation of the trigonometric function or multi- The fourth light receiving portion 34 may be disposed at an angle of 90 degrees with respect to the top, respectively.

Accordingly, the display device 300 according to some other embodiments of the present invention may include the first light receiving portion 31, the second light receiving portion 32, the third light receiving portion 33, and the fourth light receiving portion 34) It is possible to recognize more precise multi-position in all the angles in the front-rear direction as well as in the left-right direction using the total of four light-receiving portions. In addition, the number of the light-receiving portions, the mounting position and the arrangement of the light-receiving portions can be optimized according to the shape and type of the object, the shape and the environment of the sensing region, and the like.

Although not shown in the drawings, the display command input device according to some embodiments of the present invention is provided in a support portion that supports the display panel at a predetermined height from the floor surface, And a light receiving unit that is provided on the support unit and receives the reflected light reflected from the object.

1 to 10, the light emitting device 20 and the light receiving unit 30 of the display device 100, 200, 300 according to some embodiments of the present invention ) May be the same in configuration and role. Therefore, detailed description is omitted.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: object
20: Light emitting element
30:
31: First light receiving section
32: second light receiving section
40: Distance calculation unit
50: Multiple position recognition unit
33: Third light receiving section
34: Fourth light receiving section
100: display device
101: Display panel
102: Support
102-1: Bezel part
102-2: support leg
120: Position sensor

Claims (10)

A display panel;
A support for supporting the display panel at a predetermined height from the floor; And
A position detection sensor installed at the support portion toward the front of the display panel and sensing a position of an object;
Lt; / RTI >
The position detection sensor includes:
A light emitting element for emitting detection light to the object; And
A light receiving unit for receiving reflected light reflected from the object;
Lt; / RTI >
Wherein the light emitting element is an infrared LED,
The light-
A first light receiving portion having a first light receiving region so as to receive reflected light reflected from the object; And
A second light receiving portion having a second light receiving region so as to receive reflected light reflected from the object;
Lt; / RTI >
Receiving position and angle signals of the first object from the first light receiving unit and outputting the position information of the first object, receiving position and angle signals of the second object from the second light receiving unit, For outputting a multiple position value recognizing that the first object and the second object are separated from each other when the position information of the first object and the position information of the second object are out of a reference range, A recognition unit;
And a display device. The method according to claim 1,
The support portion
A bezel portion surrounding the screen of the display panel; And
A support leg for supporting the bezel at a predetermined height;
Lt; / RTI >
Wherein the position detecting sensor is installed on a front surface of the bezel portion or the support leg portion. delete The method according to claim 1,
Wherein a part of the first light receiving area of the first light receiving part and a part of the second light receiving area of the second light receiving part overlap each other. The method according to claim 1,
A distance calculating unit that outputs positional information of the object from the first light receiving unit, outputs positional information of the object from the second light receiving unit, and calculates a distance value of the object using the trigonometric function therefrom;
And a display device. delete The method according to claim 1,
The light-
A third light receiving portion having a third light receiving region so as to receive reflected light reflected from the object;
Further comprising:
And the first light receiving portion, the second light receiving portion, and the third light receiving portion are equiangularly arranged at an angle of 120 degrees with respect to the light emitting element. The method according to claim 1,
The light-
A third light receiving portion having a third light receiving region so as to receive reflected light reflected from the object; And
A fourth light receiving portion having a fourth light receiving region so as to receive reflected light reflected from the object;
Further comprising:
And the first light receiving portion, the second light receiving portion, the third light receiving portion, and the fourth light receiving portion are equiangularly arranged at an angle of 90 degrees with respect to the light emitting element. The method according to claim 1,
The light-
A first partition wall having a height at which a light passing amount can be changed according to at least an angle and having a plurality of first slits arranged in parallel in a first direction is used to bias the light passing through between the first slits A first photodiode capable of sensing a light amount of a first region and a light amount of a second region shifted toward the other side; And
And a plurality of second slits arranged in parallel with the first photodiodes and having a height at which a light passing amount can be changed according to at least an angle and arranged in parallel in a second direction, And a second photodiode capable of sensing the amount of light of the third region shifted to one side of the light passing through the slits and the amount of light of the fourth region shifted to the other side,
Wherein the first photodiode comprises:
A first eccentric array disposed below the first partitions and biased to one side with respect to a center line of each of the first slits and outputting a signal having a different intensity according to an amount of light; And
A second eccentric array disposed below the first partitions and biased toward the other side with respect to a center line of each of the first slits and outputting a signal having a different intensity according to an amount of light;
And a display device. A light emitting element provided in a supporting portion for supporting the display panel at a predetermined height from the bottom surface and for emitting detection light to the object so as to sense the position of the object; And
A light receiving unit installed on the support unit and receiving reflected light reflected from the object;
Lt; / RTI >
Wherein the light emitting element is an infrared LED,
The light-
A first light receiving portion having a first light receiving region so as to receive reflected light reflected from the object; And
A second light receiving portion having a second light receiving region so as to receive reflected light reflected from the object;
Lt; / RTI >
Receiving position and angle signals of the first object from the first light receiving unit and outputting the position information of the first object, receiving position and angle signals of the second object from the second light receiving unit, For outputting a multiple position value recognizing that the first object and the second object are separated from each other when the position information of the first object and the position information of the second object are out of a reference range, A recognition unit;
Wherein the display command input device further comprises:

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