KR102251105B1 - Large-area micro LED-based touch display - Google Patents

Abstract

Provided is a large-sized micro LED-based touch display which comprises: a micro LED display unit including a plurality of micro LEDs to output at least one touchable display object; an optical touch panel unit including at least a pair of a plurality of light emitting units and a plurality of light receiving units, wherein the plurality of light emitting units emit first light with first light intensity to detect the touch, and the plurality of light receiving units are provided to face the plurality of light emitting units, respectively, and receive the emitted first light as light receiving signals; and a control unit provided to obtain coordinates on the optical touch panel unit of the display object. The control unit controls a light emitting unit corresponding to the coordinates of the display object among the plurality of light emitting units so that second light with second light intensity that is higher than the first light intensity is emitted when light receiving signals received by the light receiving units deviate from a predetermined reference.

Description

Large-area micro LED-based touch display

The present invention relates to a large-area micro-LED-based touch display, and more specifically, to a large-area micro-LED-based touch display with improved accuracy while minimizing power consumption.

Micro Light Emitting Diode refers to a micro LED having a size of several micrometers or more to several hundred micrometers or less.

In the case of a display made of a micro LED, compared to a display made of a conventional LCD (Liquid Crystal Display) or OLED (Organic Light Emitting Diodes), the pixels are larger, but the reaction speed is fast and high luminance can be supported.

On the other hand, the disadvantage of the above-described pixels is that it is not a problem in a situation where the display made of the micro-LED is far away from the audience (or the consumer, where the consumer is a person who consumes images, images, etc., hereinafter) by a predetermined distance. May not.

Accordingly, the micro LED as described above can be applied to a display having a predetermined distance from a consumer, such as a conventional outdoor electronic signage (outdoor digital signage), indoor digital signage, and a media facade.

On the other hand, when the display made of the micro LED is provided on a large area, the pressure-sensitive or capacitive touch method may have limitations.

Accordingly, it is necessary to apply an efficient touch method to a large-area micro LED display.

One technical problem to be solved by the present invention is to provide a large-area micro-LED-based touch display with improved accuracy while minimizing power consumption.

Another technical problem to be solved by the present invention is a large-area micro LED-based touch display that distinguishes between touch by a person and adhesion by foreign substances even when provided in a public place and exposed to external environments such as rain, snow, and yellow dust. To provide.

Another technical problem to be solved by the present invention is to provide a large-area micro LED-based touch display that determines an effective touch input in an effective touch area defined as a touchable area by an adjacent person.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problem, the present invention provides a large-area micro-LED-based touch display.

According to an embodiment, the large-area micro-LED-based touch display includes a micro-LED display unit composed of a plurality of micro-LEDs so as to output at least one touchable display object, and a first light intensity to detect the touch. A plurality of light-emitting units for irradiating primary light, and provided to face each of the plurality of light-emitting units, including at least a pair of a plurality of light-receiving units for receiving the irradiated first-order light as a light-receiving signal. , An optical touch panel unit, and a control unit for obtaining coordinates on the optical touch panel unit of the display object, wherein the control unit includes, when the light receiving signal received by the light receiving unit deviates from a predetermined reference, the first light The light emitting part corresponding to the coordinates of the display object among the plurality of light emitting parts may be controlled so as to irradiate the second order light with a second light intensity higher than the intensity.

According to an embodiment, when the display object occupies at least two coordinates among the touch recognition coordinate arrays defined by the plurality of light-emitting units and the plurality of light-receiving units, the display object is one coordinate When the number of light-emitting units that irradiate the first order light is smaller than that of occupying at least two light-receiving signals deviating from the predetermined criterion, a display object having a small change amount of the light-receiving signal is considered as priority, The light emitting unit may be controlled to irradiate the second order light with a second light intensity higher than the first light intensity.

According to an embodiment, the control unit includes, among the touch recognition coordinate arrays defined by the plurality of light emitting units and the plurality of light receiving units, the display object In the coordinates, it can be determined that there is a non-touch input.

According to an embodiment, in order to detect a person adjacent to the optical touch panel, a plurality of light emitting units for irradiating light and a plurality of light receiving units for receiving the irradiated light as an incident signal are included in at least a pair. It is determined that a person is adjacent to a specific coordinate from among a plurality of light-exiting units and a plurality of light-incoming units of the proximity sensing unit, and the adjacent person is determined to be adjacent to a specific coordinate. When a touch occurs within an effective touch area defined as a touchable area on the optical touch panel unit from this specific coordinate, it is determined as an effective touch, but when a touch occurs outside the effective touch area, a non-touch input is performed. It can be determined that there is.

According to an embodiment of the present invention, a micro LED display unit comprising a plurality of micro LEDs to output at least one touchable display object, a plurality of micro LEDs irradiating a first order light with a first light intensity to sense the touch An optical touch panel unit comprising at least a pair of light-emitting units and a plurality of light-receiving units provided to face each of the plurality of light-emitting units, and receiving the irradiated first-order light as a light-receiving signal, and the A control unit for obtaining coordinates on the optical touch panel unit of a display object, wherein the control unit includes a second light intensity higher than the first light intensity when the light receiving signal received by the light receiving unit deviates from a predetermined reference. A large-area micro-LED-based touch display may be provided that controls a light-emitting part corresponding to the coordinates of the display object among the plurality of light-emitting parts so as to irradiate the second order light.

Accordingly, in the control unit of the present invention, before a touch is applied to the display object, the output of the plurality of light emitting units is controlled at low power, so that the optical touch panel unit is generally first scanned, and there is a touch on the display object. If it is determined that, the output of the light emitting unit corresponding to the coordinates of the display object among the plurality of light emitting units is controlled with high power, and the second scan of the coordinates of the display object determined to have the touch is performed, Accuracy can be improved while minimizing consumption.

On the other hand, the control unit, the display object, among the touch recognition coordinate arrays defined by the plurality of light emitting units and the plurality of light receiving units, a non- It can be determined that there is a touch input.

Accordingly, the control unit may increase efficiency by controlling the second scan to be non-performed in the coordinates where the non-touch input is present, that is, the foreign matter is attached to the optical touch panel unit.

Meanwhile, when a person is adjacent to the optical touch panel unit, the control unit determines an effective touch input within an effective touch area defined as a touchable area by the adjacent person, and outside the effective touch area -It is possible to increase efficiency by determining that there is a touch input and controlling the second scan to be non-performed.

1 to 9 are diagrams for explaining a large-area micro-LED-based touch display according to an embodiment of the present invention.
10 is a diagram illustrating a large-area micro-LED-based touch display according to a modified example of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical idea of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be placed between them. In addition, in the drawings, the shape and the thickness of the regions are exaggerated for effective explanation of the technical content.

In addition, in various embodiments of the present specification, terms such as first, second, and third are used to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. In addition, in the present specification,'and/or' has been used to mean including at least one of the elements listed before and after.

In the specification, expressions in the singular include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, components, or a combination thereof described in the specification, and one or more other features, numbers, steps, or configurations. It is not to be understood as excluding the possibility of the presence or addition of elements or combinations thereof. In addition, in the present specification, "connection" is used to include both indirectly connecting a plurality of constituent elements and direct connecting.

In addition, terms such as "... unit", "... group", and "module" described in the specification mean a unit that processes at least one function or operation, which can be implemented by hardware or software or a combination of hardware and software. have.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, with reference to the drawings, a large-area micro-LED-based touch display according to an embodiment of the present invention will be described.

1 to 9 are diagrams for explaining a large-area micro-LED-based touch display according to an embodiment of the present invention.

Referring to FIG. 1, the large-area micro-LED-based touch display 1000 may be disposed on a wall or a show window wd of a store such as a building, for example, a road shop rs. Alternatively, for another example, the large-area micro-LED-based touch display 1000 may be provided in an area providing a predetermined screen in a public place such as an airport, a bus stop, a hotel, or a hospital.

In other words, the large-area micro-LED-based touch display 1000 can replace the existing outdoor electronic signage (outdoor digital signage), indoor digital signage, media facade, and the like.

In the large-area micro-LED-based touch display 1000, as shown in FIG. 1, predetermined images, images, such as, for example, advertisements (ad), broadcasts (bd), and news articles (ns) are displayed on the screen. Can be output.

On the other hand, in the large-area micro-LED-based touch display 1000, an audience (or a consumer, here the consumer is a person who consumes images, images, etc. as described above, hereinafter referred to as a consumer) during the output of the screen. For example, at least one display object ob capable of being touched (tc) may be output together. For example, when the hamburger advertisement ad shown in FIG. 1 is being displayed on the screen on the large-area micro-LED-based touch display 1000, at least a touch (tc) possible in relation to the hamburger ad One display object ob For example, at least one display object ob related to hamburger vendor information, hamburger price information, hamburger order reservation, and the like may be output together. Alternatively, for another example, when the music broadcast (bd) shown in FIG. 1 is being output on the screen on the large-area micro-LED-based touch display 1000, the touch (tc) in relation to the music program being broadcast (bd) ) At least one possible display object (ob) For example, at least one display object ob related to participation in a real-time voting, etc. may be displayed together with information on singers appearing in a music program, information on popularity rankings of appearing singers, and so on. Or, for another example, when the news article ns shown in FIG. 1 is being displayed on the large-area micro-LED-based touch display 1000 on the screen, touch (tc) is possible in relation to the news article ns. At least one display object ob For example, at least one display object ob related to a questionnaire survey on news, a link to purchase a news-related product, and viewing a news-related video may be output together. Hereinafter, a description will be made on the assumption that the news article ns shown in FIG. 1 is output on a screen.

Accordingly, the consumer touches (tc) the display object ob on the large-area micro-LED-based touch display 1000 and outputs it to the large-area micro-LED-based touch display 1000 in real time, for example, You can participate in advertisements (ad), broadcasts (bd), and news articles (ns) in real time.

In other words, the large-area micro-LED-based touch display 1000 according to an embodiment of the present invention is provided in public places such as buildings, airports, bus stops, hotels, hospitals, etc. that can be easily accessed by consumers, and the above-described real-time advertisement (ad ), broadcasting (bd), news articles (ns), etc. are output on the screen, but by receiving real-time touch (tc) input from consumers, a display capable of real-time communication between the media and consumers can be provided.

Meanwhile, the term "touch tc" herein may be understood as a concept in which the consumer touches the display object ob output on the large-area micro-LED-based touch display 1000 with a hand. Hereinafter, the term tc may mean that the consumer has contact with the large-area micro-LED-based touch display 1000.

To this end, referring to FIG. 2, the large-area micro LED-based touch display 1000 may include at least one of the micro LED display unit 100, the optical touch panel unit 200, and the control unit 300. I can.

Each configuration is described below.

Referring to FIG. 3, the micro LED display unit 100 may be formed of a plurality of micro LEDs 110 (Micro Light Emitting Diodes). Here, the micro LED 110 may mean a micro LED having a size d1 in micrometers, for example, a size d1 of several micrometers or more to several hundreds of micrometers or less.

Accordingly, by including the micro LED 110, the micro LED display unit 100 may be used as a conventional LED (Light Emitting Diode), an LCD (Liquid Crystal Display), or OLED (Organic Light Emitting Diodes). Compared to the made-up display, the response speed is faster, and it can support high luminance.

Meanwhile, referring to FIG. 4, the micro LED display unit 100 includes a screen as previously described through the plurality of micro LEDs 110, for example, as previously assumed, a news article (ns) screen. Can be printed. In addition, the micro LED display unit 100 may transmit at least one touchable (tc) display object ob1, ob2 through the plurality of micro LEDs 110 for participation of the consumer during the output of the screen. Can be printed.

Meanwhile, coordinates may be assigned to each of the display objects ob1 and ob2 output through the micro LED display unit 100. Here, the coordinates of the display objects ob1 and ob2 are, in the optical touch panel unit 200 to be described later, a plurality of light emitting units 210 and 240 (refer to FIG. 2) and a plurality of light receiving units 220 and 250 and FIG. 2. Reference), for recognizing a consumer's touch tc, may be a coordinate on a touch recognition coordinate array (ar, see FIG. 5). For the touch recognition coordinate array ar, reference will be made to the optical touch panel unit 200 to be described later.

Meanwhile, as previously assumed, the micro LED display unit 100 may also output button objects bt (bt1, bt2, bt3) when outputting the news article ns screen. As illustrated in FIG. 4, the button object bt may include, for example, a selection button object bt1, a previous screen movement button object bt2, a next screen movement button object bt3, and the like. Here, the selection button object bt1 may be a button object for selecting a specific display object ob from a screen displayed on the micro LED display unit 100. In this case, an indication object such as, for example, a cursor may be also displayed on the screen displayed on the micro LED display unit 100. Accordingly, when the indication object is positioned on the specific display object ob and the selection button object bt1 is touched (tc), the specific display object ob can be selected. In addition, here, the previous screen movement button object bt2 may be a button object for moving to a previous screen of the screen displayed on the micro LED display unit 100. In addition, here, the next screen movement button object bt3 may be a button object for moving to the next screen of the screen displayed on the micro LED display unit 100.

Referring back to FIG. 2, the optical touch panel unit 200 may include a plurality of light emitting units 210 and 240 and a plurality of light receiving units 220 and 250 in at least a pair. More specifically, the optical touch panel unit 200 includes a plurality of light-receiving units that receive light irradiated from each of the plurality of light-emitting units 210 and 240 and the plurality of light-emitting units 210 and 240 as a light-receiving signal. (220, 250) may be included in at least one pair. That is, the optical touch panel unit 200 is of an optical type, and thus has an advantage of being advantageous in a large area.

Hereinafter, the optical touch panel unit 200 includes a plurality of first light emitting units 210: 210-1, 210-2, 210-3, 210-4, in a horizontal direction, as shown in FIG. 5. 210-5, 210-6, 210-7, 210-8) and a plurality of first light receiving units 220 (220: 220-1, 220-2, 220-) provided to face each of the plurality of first light emitting units 210 3, 220-4, 220-5, 220-6, 220-7, 220-8) are provided in a pair, and in the longitudinal direction, a plurality of second light emitting units 240: 240-1, 240-2, 240-3, 240-4, 240-5) and a plurality of second light receiving units 250 provided to face each of the plurality of second light emitting units 240: 250-1, 250-2, 250-3, 250- It is assumed that 4, 250-5) are provided in pairs. However, this is only an example, and it goes without saying that the number and arrangement of pairs of the plurality of light-emitting units and the plurality of light-receiving units constituting the optical touch panel unit 200 can be easily changed.

Referring to FIG. 5, the plurality of first and second light emitting units 210 and 240 may irradiate light to sense the touch tc. Here, the term "touch (tc)" means that, as described above, the large-area micro-LED-based touch display 1000, more specifically, the contact of the consumer on the optical touch panel unit 200. I can.

To this end, the optical touch panel unit 200 is disposed on the front surface of the micro LED display unit 100 (herein, the front is a surface facing the consumer), and in the micro LED display unit 100 It goes without saying that the output screen or the display object ob may be transparent to be observed by the consumer.

Accordingly, from the perspective of the consumer, for example, the display object ob1 output from the micro LED display unit 100 is touched, but in practice, the micro LED display unit 100 Specific coordinates L1-3 and L2-4 corresponding to the display object ob1 among the touch recognition coordinate array ar of the transparent optical touch panel unit 200 shown in FIG. 6 covering the front surface of It is chosen.

Meanwhile, the plurality of first light-receiving units 220 are provided to face the plurality of first light-emitting units 210 and receive the irradiated light as a light-receiving signal, and the plurality of second light-receiving units Reference numeral 250 may be provided to face the plurality of second light emitting units 240 and receive the irradiated light as a light-receiving signal.

Accordingly, a touch recognition coordinate array ar defined by receiving light irradiated from each of the plurality of first and second light emitting units 210 and 240 is received by each of the plurality of first and second light receiving units 220 and 250. ) Can be formed. More specifically, referring to FIG. 5, a plurality of first light emitting units 210: 210-1, 210-2, 210-3, 210-4, 210-5, 210-6, 210-7, 210-8 The light irradiated from the plurality of first light receiving units 220: 220-1, 220-2, 220-3, 220-4, 220-5, 220-6, 220-7, 220- 8) By receiving light, the first light irradiation line (L1: L1-1, L1-2, L1-3, L1-4, L1-5, L1-6, L1-7, L1-8) can be formed. have. On the other hand, the light irradiated from the plurality of second light-emitting units 240: 240-1, 240-2, 240-3, 240-4, and 240-5, along the horizontal direction, the plurality of second light-receiving units 250 : 250-1, 250-2, 250-3, 250-4, 250-5), thereby receiving the second light irradiation line (L2: L2-1, L2-2, L2-3, L2-4, L2 -5) can be formed.

Accordingly, each coordinate at a point where the first light irradiation line L1 and the second light irradiation line L2 intersect, for example, (L1-1, L2-1), (L1-2, L2) -1), (L1-3, L2-1), (L1-4, L2-1), (L1-5, L2-1), (L1-6, L2-1), (L1-7, L2 -1), (L1-8, L2-1), ?? (L1-1, L2-5), (L1-2, L2-5), (L1-3, L2-5), (L1-4, L2-5), (L1-5, L2-5), By forming (L1-6, L2-5), (L1-7, L2-5), and (L1-8, L2-5), the touch recognition coordinate array ar including the coordinates can be formed. There is.

Accordingly, as shown in FIG. 4, when the first display object ob1 and the second display object ob2 are output through the micro LED display unit 100, the optical touch panel unit 200 In the touch recognition coordinate array ar, specific coordinates corresponding to each of the display objects, that is, coordinates L1-3 and L2-4 of the first display object ob1 and coordinates L1 of the second display object ob2 -5, L2-2), (L1-6, L2-2), (L1-7, L2-2) may be given to each of the first and second display objects ob1 and ob2 (Fig. 6).

Accordingly, the controller 300 to be described later may acquire the coordinates of the display object ob on the optical touch panel 200. This will be described later.

Meanwhile, when the plurality of first and second light emitting units 210 and 240 irradiate the first light with a first light intensity, the plurality of first and second light receiving units 220 and 250 A light-receiving signal of less than or equal to intensity can be received. This is because, as described above, in the case of a large area, the light-receiving signal may be weakened as the distance between the light-emitting unit and the light-receiving unit is long.

Meanwhile, nevertheless, since the first and second light emitting units 210 and 240 and the first and second light receiving units 220 and 250 are provided in plural, the consumer's touch ( In the absence of tc), the light-receiving signals received by the plurality of first and second light-receiving units 220 and 250 may be similar. That is, the light-receiving signals received by the plurality of first and second light-receiving units 220 and 250 may be within a predetermined standard.

On the other hand, contrary to this, when the consumer's touch (tc) is present on the optical touch panel unit 200, the light from at least one of the touch recognition coordinate arrays (ar) by the consumer's touch (tc) Signal transmission can be blocked. Accordingly, the light-receiving signal received by at least one of the plurality of first and second light-receiving units 220 and 250 described above may deviate from a predetermined reference.

Accordingly, when the consumer's touch (tc) is present on the optical touch panel unit 200, the controller 300 to be described later uses the consumer's touch ( tc) is present.

Meanwhile, according to an embodiment of the present invention, in the light irradiation of the plurality of first and second light emitting units 210 and 240 described above, the first light is irradiated with the first light intensity and the first light intensity is high. It can be controlled to irradiate the second order light with 2 light intensity. This will be described in detail through the control unit 300 to be described later.

The control unit 300 may perform overall control of each unit described above, that is, the micro LED display unit 100 and the optical touch panel unit 200.

More specifically, the controller 300 may control to output at least one of a screen and a display object ob through the micro LED display unit 100 as described above.

In addition, the control unit 300, as described above, through the optical touch panel unit 200, the light irradiated from the plurality of first and second light emitting units 210, 240 And control to receive light from the second light receiving units 220 and 250.

Meanwhile, as described above, the controller 300 may acquire the coordinates of the display object ob on the optical touch panel 200.

To this end, as described above, when the display object ob is output through the micro LED display unit 100, the display object among the touch recognition coordinate array ar of the optical touch panel unit 200 It goes without saying that specific coordinates corresponding to (ob) may be assigned to the display object (ob).

Meanwhile, the control unit 300 may control the first and second light emitting units 210 and 240 to irradiate the first order light with a first light intensity. At this time, the control unit 300, when at least one of the plurality of first and second light-receiving units 220, 250, the light-receiving signal to which the first order light is received deviates from a predetermined reference, the preset It can be determined that there is a consumer's touch (tc) at the specific coordinate through the light-receiving signal deviating from a predetermined standard.

More specifically, for example, as shown in FIG. 4, the first display object ob1 is output through the micro LED display unit 100, and the consumer When a coordinate on the touch panel unit 200 is touched (tc), as shown in FIG. 6, the first display object ob1 among the touch recognition coordinate array ar of the optical touch panel unit 200 Transmission of the optical signal may be blocked at the coordinates L1-3 and L2-4 of.

Accordingly, among the plurality of first and second light-receiving units 220 and 250, the light-receiving signals received by the light-receiving units 220-3 and 250-4 in which the transmission of the optical signal is blocked by the first display object ob1 is It may deviate from pre-determined standards.

In this case, the controller 300 includes the first display among the plurality of first and second light emitting units 210 and 240 to irradiate the second order light with a second light intensity higher than the first light intensity. The light emitting units 210-3 and 240-4 corresponding to the coordinates of the object ob1 may be controlled.

This is, in the case of a large-area display as in the present invention, even when the consumer does not have a touch tc on the display object ob, the output of the plurality of first and second light emitting units 210 and 240 is The increase is because a lot of power consumption can be caused. Therefore, in the control unit 300 of the present invention, before the touch tc is applied to the display object ob, the outputs of the plurality of first and second light emitting units 210 and 240 are controlled at low power, and the When it is determined that there is a touch tc on the display object ob while scanning the optical touch panel 200 as a whole, among the plurality of first and second light emitting units 210 and 240 To increase accuracy by controlling the output of the light emitting unit corresponding to the coordinates of the display object ob with high power, and scanning the coordinates of the display object ob determined to have the touch tc once more to be.

Accordingly, according to the large-area micro-LED-based touch display 1000 according to an embodiment of the present invention, while minimizing power consumption, accuracy may be improved.

Meanwhile, when the display object ob occupies at least two or more coordinates among the touch recognition coordinate array ar, the controller 300 It is possible to control so that the number of light emitting portions that irradiate the first order light is small.

More specifically, referring to FIG. 6, the control unit 300 includes at least two coordinates (L1-5, L2-2) of the second display object ob2 and the touch recognition coordinate array ar. , (L1-6, L2-2), (L1-7, L2-2), when the first display object (ob1) occupies one coordinate (L1-3, L2-4) It is possible to control so that the number of light emitting portions that irradiate the first order light is small. For example, when the second display object ob2 is output, the control unit 300 may display the light emitting units 210-5 and 210-among the plurality of first and second light emitting units 210 and 240. In 7), the first order light may be controlled to be non-irradiated.

This, even when the first order light is not irradiated from the light emitting units 210-5 and 210-7, by the first order light irradiated from the light emitting unit 240-2 or 210-6, This is because the controller 300 can determine whether a touch tc has occurred on the second display object ob2.

Accordingly, according to the large-area micro-LED-based touch display 1000 according to an embodiment of the present invention, power consumption can be minimized.

It goes without saying that this can be applied equally to the first scan by irradiation of the first order light as described above, as well as to the second scan by irradiation of the second order light.

On the other hand, the control unit 300, when at least two light-receiving signals deviating from the predetermined criterion (that is, in the case of a multi-touch situation), the display object ob with a small change amount of the light-receiving signal. Considering the priority, the light emitting unit may be controlled to irradiate the second order light with a second light intensity higher than the first light intensity.

More specifically, referring to FIG. 7, when the optical touch panel unit 200 has one touch (tc1), the controller 300 may control the second scan described above. .

On the other hand, unlike this, referring to FIG. 8, when the optical touch panel unit 200 has at least two touches, for example, three (tc2, tc3, tc4), the control unit 300 is Priority may be given in performing the control of the second scan. In this case, as described above, in the case of the display object ob having a small change amount of the light-receiving signal, it may be unclear whether or not there is a touch on the optical touch panel unit 200. Accordingly, in order to clarify this, the control unit 300 may control the light emitting unit to irradiate the second order light by considering the display object ob having a small change amount of the light-receiving signal as a priority.

Meanwhile, in the control of a multi-touch situation by the control unit 300 as described above, it may be assumed that the multi-touch is not substantially generated. More specifically, as illustrated in FIG. 9, a case in which a foreign material dt such as dust is attached to the optical touch panel 200 may be exemplified. This is, as described above, in consideration of conditions in which the large-area micro-LED-based touch display 1000 is provided in a public place, so that it is easy to be exposed to an external environment, such as rain, snow, and yellow dust.

Even when the control unit 300 determines that the optical touch panel unit 200 is in a multi-touch situation in which at least two touches are present, substantially the same as described above in the optical touch panel unit 200 The foreign matter (dt) is attached to block transmission of the optical signal, so that it may be determined that there is a touch.

In order to minimize such an error, according to an embodiment of the present invention, the control unit 300 determines, among the touch recognition coordinate array ar, a light-receiving signal deviating from the predetermined reference. It can be determined that there is a non-touch input in a specific coordinate passing through time.

On the other hand, unlike this, the control unit 300, the display object ob, in the touch recognition coordinate array (ar), the specific coordinates in which the light-receiving signal deviating from the predetermined reference does not elapse for a predetermined time, as described above. As described above, it is of course possible to determine that there is a touch (tc5) input from the consumer.

Accordingly, the control unit 300 does not perform the second scan at the coordinates where the non-touch input is present, that is, to which the foreign material dt as described above is attached to the optical touch panel unit 200. By controlling so that it may be, the efficiency can be improved.

In the above, the large-area micro-LED-based touch display 1000 according to an embodiment of the present invention has been described.

Hereinafter, a modified example of the present invention will be described.

10 is a diagram illustrating a large-area micro-LED-based touch display according to a modified example of the present invention.

Referring to FIG. 10, in a modified example of the present invention, in addition to the above-described embodiment, a proximity detection unit 400 for detecting a person ps adjacent to the optical touch panel unit 200 may be further included. I can. Here, the adjacent person (ps) may be understood as the same concept as the consumer described above.

To this end, the adjacent sensing unit 400 includes a plurality of light emitting units 410: 410-1, 410-2, 410-3, 410-4, 410-5, 410-6, 410-7 that irradiate light. ), and at least a plurality of light-incident portions (420: 410-1, 410-2, 410-3, 410-4, 410-5, 410-6, 410-7) for receiving the irradiated light as an incident signal It can be included in a pair. Although FIG. 10 shows that the adjacent sensing units 400 are arranged in one row including the plurality of light emitting units 410 and the plurality of light incident units 420, the adjacent upper part 400 is Of course, it can be provided in multiple rows.

The detection of an adjacent person (ps) by the plurality of light emitting parts 410 and the plurality of light receiving parts 420 of the adjacent sensing unit 400 may be performed by the plurality of first and second light emitting units ( It may be the same as the principle of the plurality of first and second light receiving units 220 and 250 receiving light irradiated from 210 and 240 as a light receiving signal.

That is, in the optical touch panel unit 200 described above, through the plurality of first and second light emitting units 210 and 240 and the plurality of first and second light receiving units 220 and 250, While detecting a light-receiving signal on the YZ plane by the touch, in the adjacent sensing unit 400, through the plurality of light emitting parts 410 and the plurality of light receiving parts 420, The light-receiving signal of can be detected as the adjacent person (ps).

Even at this time, like the touch recognition coordinate array (ar) described in the previous embodiment, adjacent recognition coordinates defined by receiving the light irradiated from each of the plurality of light emitting units 410 to each of the plurality of light receiving units 420 Of course, an array can be formed.

Accordingly, when a person (ps) is adjacent to the optical touch panel unit 200, the control unit 300 includes a plurality of light exit units 410 and a plurality of light incident units 420 of the adjacent sensing unit 400. In the adjacent recognition coordinate array defined by ), a specific coordinate, for example, a specific coordinate defined by the light-exiting units 410-3 and 410-4 and the light-receiving units 420-3 and 420-4 shown in FIG. 10 It can be determined that the coordinates are occupied.

In this case, the controller 300 may determine the effective touch area er. Here, the effective touch area er may be defined as an area in which the adjacent person ps can be touched on the optical touch panel 200 from the specific coordinate. For example, as shown in FIG. 10, the effective touch area er reaches a distance that a person ps adjacent to the optical touch panel unit 200 can reach from the specific coordinate. It can mean an area. Here, the distance that the adjacent person ps can reach may include, for example, a distance at which the adjacent person ps can reach the hand by jumping high based on the specific coordinate.

Meanwhile, when a touch occurs within the effective touch area er, the controller 300 may determine that there is an effective touch input.

Unlike this, when a touch occurs outside the effective touch area, the controller 300 may determine that there is a non-touch input. Here, the non-touch input may be a case in which a foreign material dt such as dust is attached to the optical touch panel 200 as described above with reference to FIG. 9.

More specifically, the control unit 300 from the first order light irradiated from the light emitting units 210-3, 210-4, 210-5 in the effective touch area er shown in FIG. 10, the light receiving unit When the light-receiving signal received at (220-3, 220-4, 220-5) deviates from a predetermined criterion, it may be determined that there is the effective touch input.

On the other hand, unlike this, the control unit 300 is outside the effective touch area (er) shown in FIG. 10, in the light emitting unit (210-1, 210-2, 210-6, 210-7, 210-8) When the light-receiving signal received by the light-receiving units 220-1, 220-2, 220-6, 220-7, 220-8 from the irradiated first-order light deviates from a predetermined standard, there is a non-touch input It can be judged as.

Accordingly, the control unit 300 controls the second scan to be non-performed at the coordinates where the non-touch input is present, that is, to which the foreign matter (dt) is attached to the optical touch panel unit 200, Can increase.

As described above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, those who have acquired ordinary knowledge in this technical field should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: micro LED display unit
110: micro LED
200: optical touch panel unit
210: first light emitting unit
220: first light receiving unit
230: second light emitting unit
240; 2nd light receiving part
300: control unit
400: adjacent detection unit

Claims (4)

A micro LED display unit comprising a plurality of micro LEDs to output at least one touchable display object;
A plurality of light-emitting units that irradiate a first order light with a first light intensity to sense the touch, and are provided to face each of the plurality of light-emitting units, and receive the irradiated first order light as a light-receiving signal An optical touch panel unit including at least a pair of a plurality of light receiving units to be configured; And
Including; a control unit for acquiring the coordinates on the optical touch panel of the display object;
The control unit,
When the light-receiving signal received by the light-receiving unit deviates from a predetermined standard,
Controlling a light emitting part corresponding to a coordinate of the display object among the plurality of light emitting parts to irradiate a second order light with a second light intensity higher than the first light intensity,
When the display object occupies at least two or more of the touch recognition coordinate arrays defined by the plurality of light emitting units and the plurality of light receiving units,
Control so that the number of light emitting units that irradiate the first order light is smaller than when the display object occupies one coordinate,
When there are at least two light-receiving signals deviating from the predetermined criterion,
Considering a display object having a small change amount of the light-receiving signal as a priority, and controlling the light emitting unit to irradiate a second order light with a second light intensity higher than the first light intensity.
delete The method of claim 1,
The control unit,
In the display object, among the touch recognition coordinate arrays defined by the plurality of light emitting units and the plurality of light receiving units, a non-touch input is present at a specific coordinate at which a light-receiving signal deviating from the predetermined standard passes a predetermined time. Judging, large-area micro LED-based touch display.
The method of claim 1,
In order to detect a person adjacent to the optical touch panel unit, a plurality of light exit units for irradiating light, and at least a pair of a plurality of light incident units for receiving the irradiated light as an incident signal, further comprising: Including,
The control unit,
It is determined that a person is adjacent to a specific coordinate from among the adjacent recognition coordinate arrays defined by the plurality of light emitting units and the plurality of light receiving units of the proximity sensing unit, and the adjacent person can touch on the optical touch panel unit from the specific coordinates. When a touch occurs within an effective touch area defined as an area, it is determined as an effective touch,
When a touch occurs outside the effective touch area, it is determined that there is a non-touch input.

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