Display device and control method thereof

Abstract

A display device is provided. The display device includes: a plurality of display modules, each of the plurality of display modules including a first electrode plate provided on a rear surface of the display module; a frame including a plurality of regions, the plurality of display modules being mounted to the plurality of regions, respectively; and a power module including a second electrode plate disposed on a rear surface of the frame and adjacent to the first electrode plate. The power module is configured to provide alternating current (AC) power received from an external device to each of the plurality of display modules, and each of the plurality of display modules is configured to convert the AC power into direct current (DC) power.

Description

Technical Field

[0001] The present disclosure relates to an electronic device and a control method thereof, and more particularly, to a display device including a plurality of display modules and a control method thereof. Background Art

[0002] With the development of electronic technology, various types of display devices are provided, and the demand for large-scale display devices is increasing.

[0003] In particular, modular display devices can realize large display devices by interconnecting multiple display modules. Modular display devices require power lines and data signal lines for the multiple display modules. However, if the number of display modules to be interconnected increases to realize a larger modular display device, problems such as reduced yield and increased defects may arise during the manufacturing and assembly of the modular display device.

[0004] Therefore, the modular display device assembly process is complicated and it is difficult to connect the display modules provided in the display device, and the manufacturing cost increases. Summary of the Invention

[0005] Technical issues

[0006] Provided are a display device that stably supplies power and signals to each of a plurality of modules included in the display device, and a control method thereof.

[0007] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments.

[0008] Technical Solution

[0009] According to one aspect of the present disclosure, a display device is provided, comprising: a plurality of display modules, each of the plurality of display modules including a first electrode plate provided on a rear surface of the display module; a frame including a plurality of areas, the plurality of display modules being mounted to the plurality of areas, respectively; a power supply module including a second electrode plate, the second electrode plate being disposed on a rear surface of the frame and adjacent to the first electrode plate, wherein the power supply module is configured to provide alternating current (AC) power received from an external device to each of the plurality of display modules, and wherein each of the plurality of display modules is configured to convert the AC power into direct current (DC) power.

[0010] Each of the plurality of display modules may further include: a variable inductor; a switch connected to the variable inductor; and a processor configured to control on / off of the switch to adjust inductance of the variable inductor based on capacitance caused by contact between the first electrode plate and the second electrode plate.

[0011] The first electrode plate may include a first positive electrode plate and a first negative electrode plate, and the second electrode plate may include a second positive electrode plate and a second negative electrode plate, the second positive electrode plate contacting the first positive electrode plate and the second negative electrode plate contacting the first negative electrode plate.

[0012] The power module may have dimensions corresponding to those of the frame.

[0013] The display device may further include: a light transmitting module configured to convert a signal received from an external device into an optical signal and transmit the optical signal to the plurality of display modules, wherein each of the plurality of areas includes at least one first hole provided on a first side of each of the plurality of areas and at least one second hole provided on a second side of each of the plurality of areas, the second side facing the first side.

[0014] Each of the multiple display modules may include an optical signal receiver provided at a position corresponding to the at least one first hole and an optical signal transmitter provided at a position corresponding to the at least one second hole; the first display module among the multiple display modules may be configured to receive light sent from the light sending module through the at least one first hole through the optical signal receiver, and send the received light to a second display module adjacent to the first display module through the optical signal transmitter through the at least one second hole.

[0015] The multiple display modules can be arranged in a matrix form, including a first display module, a second display module and a third display module arranged adjacent to each other in the same row or the same column in the matrix form, and the second display module can be configured to receive light sent from the first display module via the at least one first hole and send the received light to the third display module via the at least one second hole.

[0016] The frame may further include: a light guide hole passing through an area of the frame, which area is between the at least one second hole provided in the area of the frame corresponding to the first display module and the at least one first hole provided in the area of the frame corresponding to the second display module, and the second display module may also be configured to receive light sent from the first display module through the light guide hole.

[0017] The multiple display modules can be divided into multiple display groups; the display modules included in the same display group can be interconnected with each other through light guide holes; the multiple display groups can receive multiple optical signals from the light transmitting module through multiple light guide holes provided between the multiple display groups and the light transmitting module.

[0018] The plurality of display modules may be interconnected with each other by cables, and each of the plurality of display modules may be further configured to transmit a signal received from an external device to an adjacent display module via the cable.

[0019] According to one aspect of the present disclosure, a method for controlling a display device is provided, which includes a plurality of display modules and a power supply module configured to provide power to each of the plurality of display modules, the method including: providing alternating current (AC) power received from an external device to each of the plurality of display modules via a first electrode plate and a second electrode plate by the power supply module, the first electrode plate being provided on the rear surface of each of the plurality of display modules, the second electrode plate being arranged on the rear surface of a frame of the display device and adjacent to the first electrode plate, wherein the frame includes a plurality of areas, and the plurality of display modules are respectively mounted to the plurality of areas; and converting the AC power into direct current (DC) power by each of the plurality of display modules.

[0020] Each of the plurality of display modules may include a variable inductor and a switch connected to the variable inductor, the method further comprising controlling on / off of the switch so that inductance of the variable inductor corresponds to capacitance according to contact between the first and second electrode plates.

[0021] The first electrode plate may include a first positive electrode plate and a first negative electrode plate, and the second electrode plate may include a second positive electrode plate and a second negative electrode plate, the second positive electrode plate contacting the first positive electrode plate and the second negative electrode plate contacting the first negative electrode plate.

[0022] The power module may have dimensions corresponding to those of the frame.

[0023] The method may further include converting a signal received from the external device into an optical signal by using a light transmitting module of the display device and transmitting the optical signal to the plurality of display modules.

[0024] The method may also include: receiving, by a first display module among the multiple display modules, light sent from the light sending module through the optical signal receiver of the first display module via at least one first hole, the at least one first hole being provided on a first side of an area of the frame, to which the first display module is mounted; and sending, by the first display module, the received light to a second display module adjacent to the first display module through the optical signal transmitter of the first display module via at least one second hole, the at least one second hole being provided on a second side of the area of the frame, to which the first display module is mounted, with the second side facing the first side.

[0025] The optical transmission module can be connected to one side of the power module.

[0026] The multiple display modules may include a first display module, a second display module and a third display module arranged adjacent to each other in the same row or the same column, and the method further includes: receiving, by the second display module, light sent from the first display module via at least one first hole, the at least one first hole being provided on a first side of an area of a frame, and the second display module being mounted to the area; and sending, by the second display module, the received light to the third display module via at least one second hole, the at least one second hole being provided on a second side of the area of the frame, and the second display module being mounted to the area with the second side facing the first side.

[0027] The frame may further include a light guide hole passing through an area of the frame, the area being between the at least one second hole provided in the area of the frame corresponding to the second display module and the at least one first hole provided in the area of the frame corresponding to the third display module, and the sending may include sending the received light to the third display module through the light guide hole.

[0028] The multiple display modules can be divided into multiple display groups, and the display modules included in the same display group can be interconnected with each other through light guide holes. The method also includes sending multiple optical signals from the light transmitting module to the multiple display groups through multiple light guide holes provided between the multiple display groups and the light transmitting module.

[0029] The plurality of display modules may be interconnected with each other by cables, and each of the plurality of display modules may be further configured to transmit a signal received from an external device to an adjacent display module via the cable.

[0030] Beneficial effects

[0031] According to various embodiments, a display device can be expanded by using a plurality of display modules, and at least one of a data signal or power can be wirelessly transmitted to each of the plurality of display modules, thereby avoiding problems in the related art such as reduced yield and increased defects in the process of manufacturing and assembling modular display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0033] Figure 1 is a diagram showing a schematic configuration of a display device according to an embodiment of the present disclosure;

[0034] Figure 2 is a diagram showing a front surface of a display module according to an embodiment of the present disclosure;

[0035] Figure 3is a diagram showing a rear surface of a display module according to an embodiment of the present disclosure;

[0036] Figure 4 is a diagram showing a schematic configuration of a display module according to an embodiment of the present disclosure;

[0037] Figure 5 is a diagram showing a schematic configuration of a display device according to an embodiment of the present disclosure;

[0038] Figure 6 is a circuit diagram showing a display module and a power supply module according to an embodiment of the present disclosure;

[0039] Figure 7 is a diagram illustrating a variable inductor of a display module according to an embodiment of the present disclosure;

[0040] Figure 8 is a diagram illustrating a resonance state of a display module according to an embodiment of the present disclosure;

[0041] Figure 9 is a diagram showing a frame of a display device according to an embodiment of the present disclosure; and

[0042] Figure 10 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The terms used herein will be briefly described, and the present disclosure will be described in more detail below.

[0044] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purposes only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0045] Because the embodiments of the present disclosure can be modified in various ways and include various embodiments thereof, specific embodiments have been described and detailed descriptions have been provided to assist in a comprehensive understanding of the disclosure. However, it should be noted that the various embodiments are not intended to limit the scope of the present disclosure to specific embodiments, but should be interpreted as including all modifications, combinations, equivalents and / or alternatives of the embodiments. When describing an embodiment, if it is determined that a detailed description of the relevant known technology may unnecessarily obscure the main purpose of the present disclosure, its detailed description will be omitted.

[0046] Terms such as “first” and “second” may be used to describe various elements, but these elements may not be limited by these terms. These terms may be used only for the purpose of distinguishing one element from another.

[0047] Singular expressions may include plural expressions unless the context clearly indicates otherwise. It will be understood that terms such as "comprising" or "consisting of..." are used herein to indicate the presence of a feature, quantity, step, operation, element, component, or a combination thereof, and do not exclude the presence or possibility of addition of one or more other features, quantities, steps, operations, elements, components, or a combination thereof.

[0048] In the present disclosure, terms such as "module" or "part" may be used to perform at least one function or operation and may be implemented as hardware or software or a combination of hardware and software. In addition, multiple "modules" or multiple "parts" may be integrated into at least one module to be implemented as at least one processor (not shown), except when it is necessary to implement the "modules" or "parts" into specific hardware.

[0049] The embodiments of the present disclosure have been described in detail with reference to the accompanying drawings to facilitate understanding by those skilled in the art. However, the present disclosure may be implemented in various forms, and it should be noted that the present disclosure is not limited to the various embodiments described herein. In addition, in the accompanying drawings, parts not relevant to the description may be omitted, and the same reference numerals may be used to represent the same elements.

[0050] Figure 1 is a diagram illustrating a schematic configuration of a display device according to an embodiment of the present disclosure.

[0051] like Figure 1 As shown, the display device 100 according to one embodiment may include a plurality of display modules 110 , a frame 120 , and a light transmitting module 130 .

[0052] The display device 100 can display video data. The display device 100 can be implemented as a television (TV), but is not limited thereto, and can be applied to any device including a display function, such as, for example, but not limited to, a video wall, a large format display (LFD), a digital signage, a digital information display (DID), a projector display, etc. In addition, the display device 100 can be implemented as various types of displays, such as, for example, but not limited to, a liquid crystal display (LCD), an organic light emitting diode (OLED), liquid crystal on silicon (LCoS), digital light processing (DLP), a quantum dot (QD) display panel, a quantum dot light emitting diode (QLED), a micro light emitting diode (μLED), a mini LED, etc.

[0053] Reference Figure 1, each of the plurality of display modules 110 according to an embodiment may be mounted to an area 121 provided on the frame 120. Each of the plurality of areas 121 provided on the frame 120 may have a square shape and may include a space to which the display module 110 may be mounted and supported.

[0054] According to one embodiment, the display device 100 may be implemented in a form including a plurality of display modules 110 (eg, display module 110-1, ..., display module 110-4). Figure 1 As shown, a plurality of display modules 110 can be combined to form a display device 100. Figures 2 to 4 The display module 110 is described in more detail.

[0055] Figure 2 is a diagram illustrating a front surface of a display module according to an embodiment of the present disclosure. Figure 3 is a diagram illustrating a rear surface of a display module according to an embodiment of the present disclosure. Figure 4 is a diagram illustrating a configuration of a display module according to an embodiment of the present disclosure.

[0056] According to one embodiment, the display module 110 may include a plurality of self-luminous elements, which may be at least one of a light emitting diode (LED) or a micro LED.

[0057] Reference Figure 2 Each of the plurality of display modules 110 may include an LED cabinet including a plurality of LED elements on the front surface of the display module or LED array 111. The LED elements may be implemented as red (R), green (G), and blue (B) LEDs, and the RGB LED may include a red LED, a green LED, and a blue LED. In addition, the LED elements may also include white LEDs in addition to the RGB LEDs.

[0058] In one example, the LED element may be implemented as a micro-LED. The micro-LED, which is an LED having a size of approximately 5-100 micrometers (μm), may be an ultra-small light-emitting element that emits light by itself without requiring a color filter.

[0059] In addition to the LED array 111, the display module 110 may further include Figure 3 The optical signal receiver 112 and the optical signal transmitter 113 are described in more detail.

[0060] Figure 3 is a diagram illustrating a rear surface of a display module according to an embodiment of the present disclosure.

[0061] According to one embodiment, the display module 110 may include an optical signal receiver 112 , an optical signal transmitter 113 , and a first electrode plate 114 .

[0062] Reference Figure 3 The display module 110 may include an LED array 111, a support frame provided at the rear surface of the LED array 111, and a driving circuit mounted on the support frame. The support frame may include square edges corresponding to the shape of the driving circuit and be coupled to the driving circuit. The driving circuit may be mounted to cover the support frame and may cover the interior of the support frame.

[0063] According to one embodiment, the driving circuit may include an optical signal receiver 112 and an optical signal transmitter 113. A first hole may be provided on a first side of the support frame so that the optical signal receiver 112 receives the optical signal without being blocked, and a second hole may be provided on a second side facing the first side so that the optical signal transmitter 113 transmits the optical signal without being blocked.

[0064] A first electrode plate 114 may be provided on the rear surface of the driving circuit according to one embodiment. The rear surface of the driving circuit may refer to the opposite surface of the circuit, a copper film surface, etc. The first electrode plate 114 may be implemented as a thin conductive plate through which electricity can pass. For example, the first electrode plate 114 may be implemented as a copper plate.

[0065] Figure 4 is a diagram illustrating a structure of a display module according to an embodiment of the present disclosure.

[0066] Reference Figure 4 , the driving circuit provided in the display module 110 may further include a variable inductor 115 , a switch 116 , a direct current (DC) to DC converter 117 , and a processor 118 .

[0067] According to one embodiment, the processor 118 may include one or more of a microprocessor, a central processing unit (CPU), a microcontroller unit (MCU), a microprocessing unit (MPU), a controller, an application processor (AP), a communication processor (CP), or an advanced reduced instruction set computer (RISC) machine (ARM) processor, or may be defined by corresponding terms. In addition, the processor 118 may be implemented as a large-scale integration (LSI) and a system on a chip (SoC) with a built-in processing algorithm, or implemented in the form of a field programmable gate array (FPGA).

[0068] The following will refer to Figures 5 to 8 The first electrode plate 114 , the variable inductor 115 , the switch 116 , and the DC to DC converter 117 are described in detail.

[0069] The following will refer to Figure 9A detailed description of receiving and transmitting an optical signal corresponding to video data according to an embodiment is provided.

[0070] Figure 5 is a diagram illustrating a schematic configuration of a display device according to an embodiment of the present disclosure.

[0071] Reference Figure 5 According to an embodiment, the display device 100 may further include a power supply module 140. Figure 5 , similar to Figure 1 According to an embodiment, each of the plurality of display modules 110 according to an embodiment may be mounted to an area 121 provided on the frame 120. Each of the plurality of areas 121 provided on the frame 120 may be square and may include a space to which the display module 110 may be mounted and supported. The size of each of the plurality of areas 121 provided in the frame 120 according to an embodiment may correspond to the size of the support frame provided in the display module 110.

[0072] The power supply module 140 may supply alternating current (AC) power received from the external device 200 to each of the plurality of display modules 110 .

[0073] According to one embodiment, the power module 140 may be provided on the rear surface of the frame 120. In addition, the power module 140 may include a second electrode plate 141, which may be in contact with the first electrode plate 114 provided on the rear surface of the display module 110. The second electrode plate 141 may be implemented as a thin conductive plate through which electricity can pass. For example, the second electrode plate 141 may be implemented as a copper plate. In one example, the second electrode plate 141 of the power module 140 may include a plurality of second electrode plates 141, including a plurality of positive electrode plates and a plurality of negative electrode plates that may be alternately arranged. For example, the power module 140 may include a second electrode plate 141, which is arranged so that a positive electrode plate and a negative electrode plate are in contact with each other in each of the plurality of display groups. The plurality of display groups of the display module 110 will be described later.

[0074] The first electrode plate 114 provided in each of the plurality of display modules 110 within the display group may include a first positive electrode plate and a first negative electrode plate. Each of the first positive electrode plate and the first negative electrode plate included in the first electrode plate 114 of the display module 110 may be in contact with a second positive electrode plate and a second negative electrode plate provided on a corresponding second electrode plate 141 of the power module 140.

[0075] The display device 100 may further include insulating paper or a high dielectric constant film for electrically insulating the first electrode plate 114 and the second electrode plate 141. According to one embodiment, the display device 100 may apply a high AC voltage between the first electrode plate 114 and the second electrode plate 141 and transmit power to each of the plurality of display modules 110 through an electric field.

[0076] According to one embodiment, the power module 140 may be provided in a size corresponding to the size of the frame 120. For example, when the power module 140 is provided at the rear surface of the frame 120, the size of the power module 140 may be consistent with the size of the frame 120. In addition, the optical transmission module 130 may be connected to one side of the power module 140.

[0077] Each of the plurality of display modules 110 according to an embodiment may convert the received AC power into DC power and drive internal elements, the LED array 111, etc., which will be referred to as Figure 6 are described in more detail.

[0078] Various embodiments regarding the display device 100 that wirelessly supplies power to each of the plurality of display modules 110 through the power supply module 140 will be described below.

[0079] Figure 6 is a circuit diagram illustrating a display module and a power supply module according to an embodiment of the present disclosure.

[0080] Reference Figure 6 The circuit indicated by the dotted line on the left side of the figure may be a circuit included in the power module 140 , and the circuit indicated by the dotted line on the right side of the figure may be a circuit included in each of the plurality of display modules 110 .

[0081] The power module 140 can receive AC power from the external device 200. For example, the power module 140 can receive 350V high voltage AC power from the external device 200. Since the power module 140 can receive high voltage AC power, low current flows in the cable connecting the power module 140 and the external device 200, and the cable can be implemented as a very thin wire 210 (see FIG. Figure 5 However, the embodiment is not limited thereto, and the power line of the power module 140 may also be directly connected to a power outlet that provides commercial power (eg, 90V to 264V). The thin line 210 includes a very thin power line and a signal line that can use the power line to send a signal.

[0082] The second electrode plate 141 of the power module 140 and the first electrode plate 114 of the display module 110 may contact each other, and the power module 140 may apply high voltage AC power between the first and second electrode plates 114 and 114. Therefore, the display module 110 may receive electromagnetic energy.

[0083] Then, each of the plurality of display modules 110 may convert the AC power into DC power. Figure 6 As shown, display module 110 may include a variable inductor 115 , a switch 116 , a DC-to-DC converter 117 , and a rectifier 119 .

[0084] Return to reference Figure 6 , each of the plurality of display modules 110 may rectify AC power (ie, electromagnetic energy) received through the first electrode plate via a rectifier 119. For example, the rectifier 119 may rectify and smooth the received AC power and generate DC power.

[0085] The DC-DC converter 117 may then convert the power rectified in the rectifier 119 to a predetermined intensity. In one example, the DC-DC converter 117 may adjust the DC power to a DC voltage level (e.g., 3V to 10V) suitable for controlling light emission from the plurality of light-emitting elements included in the LED array 111. However, this is merely an example, and the DC-DC converter 117 may adjust and output the DC power to any voltage level suitable for driving the display module 110.

[0086] Each of the multiple display modules 110 may include multiple components for converting a high DC voltage into a low DC voltage, or may not include a high-capacity DC-to-DC converter. Because the power supply module 140 according to various embodiments alternately transmits a high voltage to each of the multiple display modules 110, each of the multiple display modules 110 may use a transformer to convert the high-voltage AC power into a low-voltage AC power. Each of the multiple display modules 110 may then use a relatively simple and small-sized rectifier 119 and a DC-to-DC converter 117 to convert the low-voltage AC power into a low-voltage DC power.

[0087] The first electrode plate 114 and the second electrode plate 141 according to one embodiment may be described as being disposed in contact with each other, but the embodiment is not limited thereto. For example, even when the first electrode plate 114 and the second electrode plate 141 are not in full contact, the first electrode plate 114 and the second electrode plate 141 can smoothly transmit electromagnetic energy to the display module 110 by applying AC power having a high-frequency component.

[0088] The volume of the capacitor between the first electrode plate 114 and the second electrode plate 141 is relatively small, and if high-frequency and high-voltage AC power is applied to smoothly transmit electromagnetic energy, a phase difference in voltage and current may occur as the AC power is transferred from the second electrode plate 141 to the first electrode plate 114. Figure 6 The display module 110 according to one embodiment may include an inductor L sr To compensate for the phase difference.

[0089] The display module 110 according to an embodiment may further include a variable inductor 115 and a switch 116 to compensate for a phase difference between voltage and current, a difference in capacitor volume that may occur when the first electrode plate 114 and the second electrode plate 114 contact each other, and a difference in the inductor L. sr deviations that may occur during a manufacturing process of the display device 100, deviations that may occur during a manufacturing process of the display device 100, and the like.

[0090] The processor 118 may maintain the resonant state of the display module 110 by changing the inductance of the variable inductor 115 .

[0091] In one example, the processor 118 provided in the display module 110 can identify the inductance based on the capacitance according to the contact between the first electrode plate 114 and the second electrode plate 141. For example, the processor 118 can identify the inductance such that, by maintaining the display module 110 in a resonant state, only the resistance component exists due to the load component such as the LED array 111. The processor 118 can then change the inductance of the variable inductor 115 to correspond to the identified inductance by controlling the on and off of the switch 116.

[0092] Reference Figure 6 , the variable inductor 115 may be an inductor L var_p and inductor L var_s The processor 118 may open the switch 116 and short-circuit the secondary side of the transformer. In this case, L var_p In another example, the processor 118 can open the secondary side of the transformer by closing the switch 116. In this case, L var_p The processor 118 can change the L by alternating the on / off switching of the switch 116 according to a predetermined duty cycle. var_p inductance.

[0093] The display module 110 may be based on the changed L var_p Inductance, L sr The inductance and capacitance of the capacitor are used to maintain the resonance state.

[0094] Reference Figure 6 , if we assume for ease of description that the inductor Lm If no current flows and the transformer included in the circuit is a 1:1 or larger transformer, the resonant frequency f0 can be expressed by the following formula 1.

[0095] [Formula 1]

[0096]

[0097] Among them, L var_p is the inductance of the variable inductor, L sr is the inductance of the compensation coil, Cpr is the capacitance of the capacitor included in the external device 200, Csr+ is the capacitance based on the contact of the positive electrode plate included in each of the first electrode plate and the second electrode plate, and Csr- is the capacitance based on the contact of the negative electrode plate included in each of the first electrode plate and the second electrode plate.

[0098] Cpr may be a capacitor included in the external device 200 , and the corresponding capacitor may block DC power.

[0099] Even if the capacitance of the capacitor and the compensation coil L sr If there is a deviation between var_p The inductance is used to maintain the resonance point.

[0100] According to one embodiment, each of the plurality of display modules 110 may have an independent load, and the inductance of the variable inductor 115 may be adjusted for the corresponding display module to maintain the resonance state of the corresponding display module and make the load appear as a pure resistance component.

[0101] The following will refer to Figure 7 Provide its detailed description.

[0102] Figure 7 FIG. 1 is a diagram illustrating a variable inductor of a display module according to an embodiment of the present disclosure.

[0103] Due to the capacitance C1 (or capacitance of a capacitor) generated by the contact between the first electrode plate 114 provided on the first display module 110-1 and the second electrode plate 141 provided on the supply module 140, the processor 118 according to one embodiment may not regard the load of the first display module 110-1 as a pure resistance component. The processor 118 can adjust the inductance L1 of the variable inductor 115 so that the load of the first display module 110-1 can be regarded as a pure resistance component.

[0104] Reference Figure 7, assuming a single inverter driving independent loads R1 to R4 at a fixed frequency. Each of the multiple modules 110 according to one embodiment can maintain a resonant state by independently adjusting the inductance of the variable inductor 115. For example, the inductance L1 of the variable inductor 115 provided in the first display module 110-1 and the inductance L2 of the variable inductor 115 provided in the second display module 110-2 can be varied according to the capacitance C1 and capacitance C2, respectively.

[0105] Figure 8 is a diagram illustrating a resonance state of a display module according to an embodiment of the present disclosure.

[0106] Reference Figure 8 , the inductance of the variable inductor 115 provided on each of the plurality of display modules 110 may be different from each other. In addition, each of the plurality of display modules 110 may maintain a resonance state by independently adjusting the inductance of the variable inductor 115.

[0107] The display device 100 according to various embodiments may be expanded by using a plurality of display modules 110 , and power may be wirelessly transmitted to each of the plurality of display modules 110 .

[0108] Furthermore, since the enlarged display device 100 can be connected to the external device 200 that supplies data signals and power to the display device 100 via very thin wires, the enlarged display device 100 is improved compared to related art display devices from the perspective of interior design.

[0109] The display device 100 according to an embodiment may wirelessly provide a data signal to each of the plurality of display modules 110 .

[0110] Return to reference Figure 4 According to an embodiment, the processor 118 may control the light emission of the plurality of LED elements included in the LED array 111 based on the optical signal received through the optical signal receiver 112. The optical signal receiver 112 may be implemented as a light sensor capable of detecting an optical signal, etc., but the embodiment is not necessarily limited thereto and may be implemented as various types of sensors capable of detecting an optical signal.

[0111] In addition, the processor 118 may control the optical signal transmitter 113 to transmit an optical signal corresponding to the received optical signal to the outside. The optical signal transmitter 113 may be implemented as various types of light emitting elements capable of transmitting a predetermined level of light based on the control of the processor 118.

[0112] Reference Figure 4The display module 110 has been described as including three optical signal receivers 112 and three optical signal transmitters 113. Each of the three optical signal receivers 112 can receive an R optical signal, a G optical signal, and a B optical signal, and each of the three optical signal transmitters 113 can transmit an R optical signal, a G optical signal, and a B optical signal. However, this is merely an example, and embodiments are not limited thereto. For example, the display module 110 may also include one optical signal receiver 112 and one optical signal transmitter 113. The processor 118 may control the lighting of the multiple LED elements included in the LED array 111 based on a single optical signal received by the optical signal receiver 112, and control the optical signal transmitter 113 to transmit an optical signal corresponding to the received optical signal. In another example, the display module 110 may also include four or more optical signal receivers 112 and four or more optical signal transmitters 113. The number of optical signal receivers 112 and the number of optical signal transmitters 113 included in the display module 110 do not necessarily have to be the same.

[0113] According to one embodiment, the position and number of the first holes provided on the first side of the support frame so that the optical signal receiver 112 receives the optical signal without being blocked may respectively correspond to the position and number of the optical signal receivers 112 provided on the drive substrate. In addition, the position and number of the second holes provided on the second side of the support frame (for example, opposite to the first side) so that the optical signal transmitter 113 transmits the optical signal without being blocked may respectively correspond to the position and number of the optical signal transmitter 113 provided on the drive substrate.

[0114] According to one embodiment, the plurality of display modules 110 may be arranged in a matrix form. Figure 1 , the frame 120 according to an embodiment may include a plurality of regions 121 in a 4×5 matrix form, and each display module 110 may be mounted and fixed at each of the plurality of regions 121. The number, size, etc. of the plurality of regions 121 provided in the frame 120 may be variously modified according to the size of the display device 100, etc.

[0115] The plurality of display modules 110 arranged in a matrix form may be divided into a plurality of display groups. Figure 1 , multiple display modules in the form of 4×1 arranged in the same column can be a display group. That is, Figure 1 The plurality of display modules shown may be divided into five display groups, each display group corresponding to each column of the 4×5 matrix form.

[0116] However, this is only an example, and the embodiment is not limited thereto. Figure 1, multiple display modules in the form of a 1×5 matrix arranged in the same row can be a display group. That is, Figure 1 The plurality of display modules 110 shown may be divided into four display groups, each display group corresponding to each row of a 4×5 matrix form.

[0117] According to one embodiment, the plurality of display modules 110 may be connected in units of display groups and transmit and receive data. For example, the plurality of display modules 110 included in the display group may be connected via a daisy chain method. The daisy chain method, which is a method of connecting the plurality of display modules 110 in the display group in series, may be a method in which a display module that has received data from an external device 200 may transmit the received data to another display module connected in series to the display module, so that the data is sequentially transmitted to all of the plurality of display modules.

[0118] Reference Figure 1 , among the multiple display modules 110 in a 4×1 matrix form as a display group, the first display module 110-1 located at the bottom of the multiple display modules in a display group can send data to the second display module 110-2 in the same display group, and the data can be sent to the third display module 110-3 and the fourth display module 110-4 in sequence.

[0119] The display device of the related art interconnects a plurality of display modules by using a plurality of connecting cables to send power and / or data to each of the plurality of display modules. For example, the daisy chain method of the related art involves a plurality of display modules in a display group being interconnected by cables, and the display module sending data to another display module connected in series with the display module through the cable. Because the display device of the related art uses a plurality of connecting cables to interconnect a plurality of display modules, there are the following disadvantages: the manufacturing and assembly process of the display device is complicated, the unit cost of producing the display device is increased, and the output is reduced. The display device 100 according to one embodiment can send data to each of the plurality of display modules 110 through a passage hole (which is not a cable) provided on the frame 120, thereby solving the problems in the above-mentioned related art.

[0120] According to an embodiment, each of the plurality of regions 121 provided in the frame 120 may include at least one first hole 122 provided at a first side of the region 121 and at least one second hole 123 provided at a second side of the region 121 facing the first side.

[0121] According to one embodiment, the position and number of optical signal receivers 112 provided in the display module 110 may correspond to the position and number of the first holes 122 provided in the area 121, and the position and number of optical signal transmitters 113 provided in the display module 110 may correspond to the position and number of the second holes 123 in the area 121.

[0122] According to one embodiment, the first display module 110-1 among the plurality of display modules 110 may receive light transmitted from the light transmitting module 130 via the first hole 122 through the optical signal receiver 112, and transmit the received light to the adjacent second display module 110-2 via the optical signal transmitter 113 via the second hole 123. The first display module 110-1 may refer to the display module disposed at the lowest end of each of the plurality of display groups. The first display module 110-1 disposed at the lowest end of each display group according to one embodiment may receive light transmitted from the light transmitting module 130.

[0123] The display device 100 according to an embodiment may include an optical transmission module 130 provided at one side of the frame 120 and converting a signal received from the external device 200 into an optical signal and transmitting it to the first display module 110 - 1 of each display group of the plurality of display modules 110 .

[0124] The external device 200 may be a device that provides video data to a display device 100 including a plurality of display modules 110. Specifically, the external device 200 may be implemented as an image processing device that provides video data obtained by processing input video content and control data for displaying corresponding video data to the display device 100. The video data may be data associated with an image signal including red (R), green (G), and blue (B) pixel information, etc. In addition, the control data may be data associated with a control command signal for controlling the state of the display module, and may include information of the display module, including, for example, contrast information, brightness information, information about an arrangement state, or at least one of information about whether the power supply is on or off. For example, the external device 200 may be implemented as a device that processes input data and sends it to the display device 100, such as, for example, but not limited to, a source box, a control box, a sending box, a set-top box, etc. In addition, the external device 200 may be implemented as a device that receives external power and converts it into an AC signal having positive (+) and negative (-) differential components at a higher frequency (e.g., 200 kHz) than commercial AC power (e.g., 50 / 60 Hz), and provides the AC signal to the power supply module 140 mounted to the rear surface of the display device 100 via a thin wire. In the present disclosure, electromagnetic wave components generated by the high-frequency AC signal are transmitted as differential components to cancel each other.

[0125] The optical transmission module 130 according to an embodiment may convert control data or a signal received from the external device 200 into an optical signal and transmit the optical signal.

[0126] For example, the optical transmission module 130 can transmit an optical signal to the first display module 110-1 through the first hole 122 of the area 121, which is the area provided at the lowermost end of the frame 120 to which the first display module 110-1 is mounted. The first hole 122 can be a passage hole through which the optical signal transmitted by the optical transmission module 130 can pass and reach the optical signal receiver 112 provided in the first display module 110-1 without being blocked (or without any loss). The optical transmission module 130 may include at least one light-emitting element to correspond to each of the number and area of the first holes 122 provided in the area 121 at the lowermost end of the frame 120.

[0127] The optical transmission module 130 according to an embodiment can transmit an optical signal to the first display module 110-1 disposed at the lowest end of each of the plurality of display groups, so as to transmit the optical signal to each of the plurality of display groups. Figure 1 The optical transmission module 130 is shown spaced apart from the frame 120 , but the optical transmission module 130 may be provided at one side of the frame 120 to be connected with the frame 120 .

[0128] The second display module 110-2 can receive the light transmitted from the first display module 110-1 through the first hole 122 of the area 121 corresponding to the second display module 110-2 through the optical signal receiver 112, and transmit the received light to the adjacent third display module 110-3 through the second hole of the area 121 corresponding to the second display module 110-2 through the optical signal transmitter 113. The optical signal can then be sequentially transmitted to the third to nth display modules 110-3, ..., 110-n in the display group.

[0129] The first to nth display modules 110 - 1 , . . . , 110 - n may belong to a display group divided by rows or columns, that is, the first to nth display modules 110 - 1 , . . . , 110 - n may be disposed in the same row or column.

[0130] Will refer to Figure 9 DETAILED DESCRIPTION A detailed description is given of at least one first hole 122 provided at a first side of each of the plurality of regions 121 and at least one second hole 123 provided at a second side facing the first side according to an embodiment.

[0131] Figure 9 is a diagram illustrating a framework according to an embodiment of the present disclosure.

[0132] Reference Figure 9 , the plurality of display modules 110 may be arranged in a matrix form, and the plurality of display modules 110 may be divided into a plurality of display groups.

[0133] For example, the plurality of display modules 110 may be arranged in a 4×5 matrix and divided into five display groups, each display group being in a 4×1 matrix (i.e., four rows and one column). For example, the first to fourth display modules 110-1, 110-2, ..., 110-4 in a 4×1 matrix may be included in the first display group among the five display groups.

[0134] The area 121 to which each of the first to fourth display modules 110-1, ..., 110-4 is mounted may include a first hole 122 on a first side (e.g., the lower side) of the area 121 and a second hole 123 on a second side (e.g., the upper side) of the area 121 facing the first side. The frame 120 may further include a light guide hole 124 between the second hole 123 of the area 121 to which the lower display module (e.g., the first display module 110-1) is mounted and the first hole 122 of the area 121 to which the upper adjacent display module (e.g., the second display module 110-2) is mounted. The light guide hole 124 passes through the area of the frame 120. That is, the second hole 123 corresponding to the area 121 provided by the lower display module and the first hole 122 corresponding to the area 121 provided by the adjacent upper display module may be connected by the light guide hole 124. For illustrative purposes, Figure 9 The number and positions of the first holes 122 and the number and positions of the second holes 123 shown are arbitrarily selected, and the embodiment is not limited thereto.

[0135] According to one embodiment, the optical transmission module 130 may convert a signal (e.g., video data) received from the external device 200 into an optical signal. The optical transmission module 130 may then transmit the optical signal to the frame 120 through the first hole 122 located in the region 121 where the first display module 110-1 at the lowermost end of the display group is mounted.

[0136] The optical signal transmitted by the light transmitting module 130 can be transmitted to the optical signal receiver 112 provided in the first display module 110-1 through the first hole 122, and the first display module 110-1 can control the light emission of the light emitting elements included in the LED array 111 based on the received optical signal. Then, the first display module 110-1 can transmit light corresponding to the received optical signal to the adjacent display module 110-2 through the optical signal transmitter 113.

[0137] According to one embodiment, light transmitted by the first display module 110-1 can pass through the first hole 122 provided on the area 121 where the second display module 110-2 is mounted via the second hole 123 provided at the area 121 where the first display module 110-1 is mounted. The light transmitted by the first display module 110-1 passes through the light guide hole 124 that passes through the area of the frame between the second hole 123 corresponding to the first display module 110-1 and the first hole 122 corresponding to the second display module 110-2. The light guide hole 124 may refer to a passage hole through which optical signals are transmitted and received, rather than using a cable (e.g., an optical cable) for connecting the first display module 110-1 and the second display module 110-2 as in the related art.

[0138] According to one embodiment, the second display module 110-2 may receive light through the first hole 122 provided on the region 121 to which the second display module 110-2 is mounted, and transmit light corresponding to the light received by the optical signal transmitter 113 provided in the second display module 110-2. The light transmitted by the second display module 110-2 may be transmitted to the third display module 110-3, and the third display module 110-3 may transmit light corresponding to the received light to the fourth display module 110-4. The light corresponding to the received light may be the same light as the received light.

[0139] For ease of description, an example embodiment in which a display module transmits an optical signal to a display module vertically adjacent to the display module has been described, but the embodiment is not limited thereto. In one example, the display module 110 may also transmit an optical signal to a display module horizontally adjacent to the display module.

[0140] The display device 100 according to various embodiments may transmit and receive optical signals between the plurality of display modules 110 through the light guide holes 124 passing through an area in a frame, which replaces cables in the related art.

[0141] When each of the plurality of display modules 110 is mounted to the area 121 provided in the frame 120 , the area 121 provided in the frame 120 becomes covered, and thus light transmitted from the display module 110 may reach another display module without being disturbed by external light.

[0142] The display device 100 according to an embodiment may be implemented to provide power only wirelessly and to provide data signals in a wired manner to each display module 110. For example, each of the plurality of display modules 110 included in the display device according to an embodiment may be interconnected with an adjacent display module via a wired cable to transmit and receive data signals, and / or may output an image based on the data signal received from the adjacent display module.

[0143] Figure 10 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present disclosure.

[0144] A method according to an embodiment of the present invention controls a display device, the display device including a frame, a plurality of display modules, and a power supply module. The frame includes a plurality of areas to which the plurality of display modules are mounted, and each of the plurality of display modules includes a first electrode plate provided at the rear surface of each of the plurality of display modules. The power supply module includes a second electrode plate disposed at the rear surface of the frame and arranged adjacent to the first electrode plate. The method according to an embodiment of the present invention provides AC power received from an external device to each of the plurality of display modules (S1010). Then, each of the plurality of display modules can convert the AC power into DC power (S1020).

[0145] Each of the plurality of display modules may include a variable inductor and a switch connected to the variable inductor. A control method according to an embodiment may include identifying an inductance based on capacitance according to contact between a first electrode plate and a second electrode plate, and controlling on / off of the switch so that the variable inductor includes the identified inductance.

[0146] In addition, the first electrode plate may include a first positive electrode plate and a first negative electrode plate, and the second electrode plate may include a second positive electrode plate contacting the first positive electrode plate and a second negative electrode plate contacting the first negative electrode plate.

[0147] The power module according to an embodiment may be provided in a size corresponding to that of the frame.

[0148] A display device according to an embodiment may include an optical transmission module provided on one side of a frame and converting a signal received from an external device into an optical signal and transmitting the optical signal to a plurality of display modules. A display device according to an embodiment may also include a frame and a plurality of regions, wherein the plurality of display modules are mounted to the plurality of regions of the frame. Each of the plurality of regions may include at least one first hole provided on a first side of the region and at least one second hole provided on a second side of the region facing the first side, and each of the plurality of display modules may include an optical signal receiver provided at a position corresponding to the first hole and an optical signal transmitter provided at a position corresponding to the second hole.

[0149] A control method according to an embodiment may include receiving, at a display module, light transmitted from an adjacent display module among a plurality of display modules from a light transmitting module through a first hole by an optical signal receiver, and transmitting the received light to another adjacent display module through a second hole by an optical signal transmitter.

[0150] The optical transmission module can be connected to one side of the power module.

[0151] In addition, the first display module and the second display module may be arranged in the same row or the same column, and the control method according to one embodiment may include receiving light transmitted from the first display module via the first hole by the optical signal receiver of the second display module, and transmitting the received light to a third display module adjacent to the second display module via the second hole by the optical signal transmitter of the second display module. The third display module may be arranged in the same row or the same column as the first display module and the second display module.

[0152] According to one embodiment, the frame may further include a light guide hole that passes through an area of the frame between a second hole provided in the first display module and a first hole provided in the second display module, and sending light from the first display module to the second display module may include sending light from the first display module to the second display module through the light guide hole.

[0153] In addition, multiple display modules can be divided into multiple display groups, and the multiple display modules included in each of the multiple display groups can be interconnected through multiple light guide holes. According to one embodiment, the control method may include receiving multiple optical signals sent from the light transmitting module at each of the multiple display groups by providing multiple light guide holes between the multiple display groups and the light transmitting module.

[0154] Each of the plurality of display modules according to an embodiment may be interconnected via a cable to transmit a signal received from an external device to an adjacent display module.

[0155] Various embodiments of the present disclosure may be applicable not only to display devices but also to all types of electronic devices including power supplies.

[0156] The various embodiments described above can be implemented using software, hardware, or a combination of software and hardware with a recordable medium that can be read by a computer or a device associated with the computer. In some cases, the embodiments described herein can be implemented by the processor itself. According to software embodiments, embodiments such as the processes and functions described herein can be implemented using separate software modules. Each of the above software modules can perform one or more of the functions and operations described herein.

[0157] Computer instructions for performing operations in the display device 100 (or electronic device) according to the various embodiments described above may be stored in a non-transitory computer-readable medium. The computer instructions stored in the non-transitory computer-readable medium may be executed by a processor, a computer, or a related device to perform the above-described operations in the display device 100 according to the various embodiments.

[0158] A non-transitory computer-readable medium refers to a medium that stores data semi-permanently rather than for a very short period of time, such as a register, cache, memory, etc., and can be read by a device. Specific examples of non-transitory computer-readable media include, for example, but are not limited to, compact discs (CDs), digital versatile discs (DVDs), hard disks, Blu-ray discs, universal serial buses (USBs), memory cards, read-only memories (ROMs), etc.

[0159] According to various embodiments, a display device can be expanded by using multiple display modules, and at least one of a data signal or power can be wirelessly transmitted to each of the multiple display modules, thereby avoiding problems in the related art such as reduced yield and increased defects in the process of manufacturing and assembling modular display devices.

[0160] According to an example embodiment, at least one of the parts, elements, modules or units described herein can be embodied as various quantities of hardware, software and / or firmware structures that perform the above-mentioned corresponding functions. For example, at least one of these parts, elements or units can use a direct circuit structure that can be controlled by one or more microprocessors or other control devices to perform the corresponding functions, such as a memory, a processor, a logic circuit, a lookup table, etc. In addition, at least one of these parts, elements or units can be specifically embodied by a module, a program or a portion of code, which includes one or more executable instructions for performing a specified logical function and is operated by one or more microprocessors or other control devices. In addition, at least one of these parts, elements or units can also include a processor, a microprocessor, etc., or be implemented by a processor, a microprocessor, etc., such as a central processing unit (CPU) that performs the corresponding functions. Two or more of these parts, elements or units can be combined into a single part, element or unit that performs all operations or functions of the elements of the two or more parts, units combined. In addition, at least part of the functions of at least one of these parts, elements or units can be performed by another of these parts, elements or units. In addition, although a bus is not shown in the block diagram, communication between components, elements or units can be performed via a bus. The functional aspects of the above-described example embodiments can be implemented as algorithms running on one or more processors. In addition, the components, elements or units represented by blocks or processing operations can adopt any number of related technologies for electronic configuration, signal processing and / or control, data processing, etc.

[0161] Although the present disclosure has been shown and described with reference to various exemplary embodiments thereof, the present disclosure is not limited to the specific embodiments described. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure.

Claims

1. A display device comprising: a plurality of display modules, each of the plurality of display modules including a first electrode plate provided on a rear surface of the display module, wherein the first electrode plate includes a first positive electrode plate and a first negative electrode plate; a frame comprising a plurality of regions, wherein the plurality of display modules are mounted to the plurality of regions respectively; a power module comprising a plurality of second electrode plates disposed on a rear surface of the frame, each second electrode plate comprising a second positive electrode plate in contact with a corresponding first positive electrode plate and a second negative electrode plate in contact with a corresponding first negative electrode plate, wherein the power supply module is configured to supply alternating current (AC) power received from an external device to each of the plurality of display modules via the first electrode plate and the plurality of second electrode plates, and Each of the plurality of display modules is configured to convert the alternating current (AC) power into direct current (DC) power.

2. The display device according to claim 1, wherein each of the plurality of display modules further comprises: variable inductors; a switch connected to the variable inductor; as well as A processor is configured to control the on and off states of the switch to adjust the inductance of the variable inductor based on capacitance caused by contact between the first electrode plate and the corresponding second electrode plate. 3 . The display device according to claim 1 , wherein the power supply module has a size corresponding to a size of the frame.

4. The display device according to claim 1, further comprising: an optical transmission module configured to convert a signal received from the external device into an optical signal and transmit the optical signal to the plurality of display modules, Each of the plurality of regions includes at least one first hole provided on a first side and at least one second hole provided on a second side facing the first side.

5. The display device according to claim 4 , wherein each of the plurality of display modules comprises an optical signal receiver provided at a position corresponding to the at least one first hole and an optical signal transmitter provided at a position corresponding to the at least one second hole, and Wherein, a first display module among the plurality of display modules is configured to receive light transmitted from the light transmitting module through the at least one first hole by the optical signal receiver, and transmit the received light to a second display module adjacent to the first display module through the optical signal transmitter through the at least one second hole.

6. The display device according to claim 4 , wherein the plurality of display modules are arranged in a matrix, the plurality of display modules comprising a first display module, a second display module, and a third display module disposed adjacent to each other in the same row or the same column in the matrix, and The second display module is configured to receive the light transmitted from the first display module through the at least one first hole and transmit the received light to the third display module through the at least one second hole.

7. The display device according to claim 6, wherein the frame further comprises: a light guide hole passing through an area of the frame, the area between the at least one second hole provided in the area of the frame corresponding to the first display module and the at least one first hole provided in the area of the frame corresponding to the second display module, and The second display module is further configured to receive light transmitted from the first display module through the light guide hole.

8. The display device according to claim 1 , further comprising an optical transmission module configured to convert a signal received from the external device into an optical signal and transmit the optical signal to the plurality of display modules, wherein the plurality of display modules are divided into a plurality of display groups, and The display modules included in the same display group are interconnected with each other through light guide holes, and the plurality of display groups are configured to receive a plurality of optical signals from the light transmitting module through a plurality of light guide holes provided between the plurality of display groups and the light transmitting module.

9. The display device according to claim 1, wherein the plurality of display modules are interconnected with each other by cables, and Each of the plurality of display modules is further configured to transmit a signal received from the external device to an adjacent display module via the cable.

10. A method for controlling a display device, the display device comprising a plurality of display modules and a power supply module configured to provide power to each of the plurality of display modules, the method comprising: supplying, by the power supply module, alternating current (AC) power received from an external device to each of the plurality of display modules via a first electrode plate provided on a rear surface of each of the plurality of display modules and a plurality of second electrode plates disposed on a rear surface of a frame of the display device, wherein the frame includes a plurality of areas to which the plurality of display modules are mounted, respectively; as well as converting the alternating current (AC) power into direct current (DC) power through each of the plurality of display modules, The first electrode plate includes a first positive electrode plate and a first negative electrode plate, and Each of the plurality of second electrode plates includes a second positive electrode plate in contact with the corresponding first positive electrode plate and a second negative electrode plate in contact with the corresponding first negative electrode plate.

11. The method of claim 10, wherein each of the plurality of display modules comprises a variable inductor and a switch connected to the variable inductor, The method also includes controlling the on and off states of the switch so that an inductance of the variable inductor corresponds to a capacitance according to contact between the first electrode plate and a corresponding second electrode plate. 12 . The method of claim 10 , wherein the power module has a size corresponding to a size of the frame. 13 . The method of claim 10 , further comprising converting a signal received from the external device into an optical signal by using a light transmitting module of the display device and transmitting the optical signal to the plurality of display modules.

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