Display apparatus and method of operating the same

Abstract

To provide a display device for detecting damage of a pogo pin for electrical connection between a head and a stand, and to provide an operation method thereof.SOLUTION: According to an aspect of an exemplary embodiment, there is provided a display apparatus including a stand and a head, wherein the head is electrically connected through a pogo pin provided in a connector of the stand, and the head further includes a main board configured to acquire an operation state of the head and an input voltage input to the head through the pogo pin and determine whether an error occurs in the pogo pin based on the operation state of the head and the input voltage.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a display device, and more particularly to a stand-type display device. [Background technology]

[0002] The stand-type display device is a product with unique design and convenient functions, providing users with a new form of viewing experience.

[0003] The stand-type display device is equipped with wheels, making it easy to move and use anywhere in the house, allowing the display device to be used conveniently in a variety of spaces, such as the kitchen, living room, and bedroom.

[0004] Additionally, stand-type displays can rotate the screen by 90 degrees, allowing you to use both portrait and landscape modes, which is useful for viewing photos, working with documents, and using social media.

[0005] In addition, the stand-type display device allows the height and angle of the screen to be adjusted to suit the user's line of sight, allowing for convenient viewing.

[0006] The stand-type display device includes a pogo pin for electrical connection between the head and the stand to supply an external power source, and a battery for supplying power to the head when the external power source is not connected.

[0007] Pogo pin burnout, poor contact, or corrosion due to poor coating are inevitable reliability issues.

[0008] When a pogo pin malfunctions, the voltage provided by the adapter drops, causing the battery to be unable to fully charge. That is, the voltage supplied to the battery must be above a certain level, and if a pogo pin malfunctions, the voltage cannot be above that level. This prevents the battery from reaching a full charge state, and the internal temperature of the battery rises due to continued charging.

[0009] Consequently, there is a risk of fire due to overheating and damage to the battery, as the battery continues to charge even if a pogo pin error occurs.

[0010] In addition, conventionally, a temperature sensor was used to detect pogo pin errors and sense the temperature around the pogo pin contacts, reducing the risk of fire, but when used in areas with high ambient temperatures, there is a risk of malfunction due to the temperature sensor rising. Summary of the Invention [Problem to be solved by the invention]

[0011] The purpose of this disclosure may be to detect damage to the pogo pins for the electrical connection between the head and the stand.

[0012] The objective of the present disclosure may be to use pogo pins to predict the connection state depending on the operation state of the head and the charge state of the battery when connecting the power supply.

[0013] An object of the present disclosure may be to perform two-stage verification of whether a pogo-pin error has occurred (whether it has occurred) according to each operating state of the head, and to accurately measure whether a pogo-pin error has occurred. [Means for solving the problem]

[0014] A display device according to an embodiment of the present disclosure includes a stand; a head supported by the stand and including a display and a battery; and the head is electrically connected to the stand via a pogo pin provided in a connector of the stand; The head may further include (comprise; configure; construct; set; include; contain; have) a main board that acquires an operating state of the head and an input voltage input to the head through the pogo pin, and determines whether an error has occurred in the pogo pin based on the operating state of the head and the input voltage.

[0015] According to an embodiment of the present disclosure, a method for operating a display device including a stand, a head supported by the stand and having a display and a battery, and the head being electrically connected via pogo pins provided in a connector of the stand, may include the steps of acquiring an operating state of the head and an input voltage input to the head via the pogo pins, and determining whether an error has occurred in the pogo pins based on the operating state of the head and the input voltage. [Effects of the Invention]

[0016] According to an embodiment of the present disclosure, damage to the pogo pins for electrical connection between the head and the stand can be detected, and the possibility of a fire occurring can be prevented.

[0017] According to an embodiment of the present disclosure, the connection state of the pogo pins can be predicted based on the voltage and power consumption state when the power supply is connected using the pogo pins, and accordingly, the display device can be kept in a power-off state and a notification can be given to the user to prevent fire and overheating due to battery charging.

[0018] According to the embodiment of the present disclosure, the presence or absence of a pogo pin error can be accurately detected by performing a two-stage verification depending on each operation state of the head. [Brief explanation of the drawings]

[0019] [Figure 1A-1B] 1A and 1B are diagrams illustrating a structure of a display device according to an embodiment of the present disclosure. [Figure 2]FIG. 1 is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure. [Figure 3A-3B] 1 is a diagram illustrating a structure of a display device according to an embodiment of the present disclosure from the viewpoint of power supply. [Figure 4] 1A and 1B are diagrams illustrating a configuration of a charging board according to an embodiment of the present disclosure. [Figure 5] FIG. 2 illustrates a circuit diagram of a detection circuit according to an embodiment of the present disclosure. [Figure 6] FIG. 6 is a diagram illustrating the operating principle of an LDO circuit according to an embodiment of the present disclosure. [Figure 7-10] 10A and 10B are diagrams illustrating a process of determining whether a pogo pin error has occurred based on the operating state of the head and the charging state of the battery according to an embodiment of the present disclosure. [Figure 11] 10A and 10B are diagrams illustrating a method for verifying errors in pogo pins according to each operating state of a head according to the present disclosure. [Figure 12] FIG. 2 is a diagram illustrating a control circuit according to an embodiment of the present disclosure. [Figure 13] 10A and 10B are diagrams illustrating the reason for increasing the power consumed by the head when the head is in the third operating state according to an embodiment of the present disclosure. [Figure 14] 10 is a flowchart illustrating a method of operating a display device according to yet another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, the embodiments of the present invention will be described in more detail with reference to the drawings. The suffixes "module" and "section" used in the following description are given or mixed for the purpose of facilitating the preparation of the specification, and do not have any distinct meanings or roles.

[0021] The directional indications of up (U), down (D), left (Le), right (Ri), front (F), and rear (R) shown in the drawings are for convenience of explanation only and do not limit the technical ideas disclosed in this specification.

[0022] The display device according to an embodiment of the present invention is an intelligent display device that adds computer-assisted functions to a broadcast reception function, for example, and may be equipped with an Internet function and a more convenient interface such as a handwriting input device, a touch screen, or a spatial remote control while remaining faithful to the broadcast reception function. Furthermore, the display device may be connected to the Internet and a computer through support for wired or wireless Internet functions, and may perform functions such as e-mail, web browsing, banking, or games. A standardized general-purpose OS may be used for these various functions.

[0023] Therefore, the display device described in the present invention can perform various user-friendly functions, for example, by freely adding or removing various applications on a general-purpose OS kernel. More specifically, the display device may be, for example, a network TV, an HBB TV, a smart TV, an LED TV, an OLED TV, etc., and may also be applicable to a smartphone in some cases.

[0024] 1A and 1B are diagrams illustrating the structure of a display device according to an embodiment of the present disclosure.

[0025] 1A and 1B, a display device 1 may include a head 10. The head 10 may include a display panel for displaying an image.

[0026] The head 10 may include a first long side LS1, a second long side LS2 opposite the first long side LS1, a first short side SS1 adjacent to the first long side LS1 and the second long side LS2, and a second short side SS2 opposite the first short side SS1.

[0027] Meanwhile, for convenience of explanation, the lengths of the first and second long sides LS1 and LS2 are described as being longer than the lengths of the first and second short sides SS1 and SS2. It may be possible that the results are almost the same.

[0028] The direction parallel to the short sides SS1 and SS2 of the head 10 can be referred to as the up-down direction or first direction DR1. The direction parallel to the long sides LS1 and LS2 of the head 10 can be referred to as the left-right direction or second direction DR2. The direction perpendicular to the short sides SS1 and SS2 and the long sides LS1 and LS2 of the head 10 can be referred to as the front-rear direction or third direction DR3.

[0029] The direction in which the head 10 displays an image can be referred to as the forward direction F, z, and the opposite direction can be referred to as the backward direction R. The first short side SS1 side can be referred to as the left side (Le, x). The second short side SS2 side can be referred to as the right side Ri. The first long side LS1 side can be referred to as the upper side U, y. The second long side LS2 side can be referred to as the lower side D.

[0030] The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may be referred to as edges of the head 10. The points where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet may be referred to as corners. The point where the first short side SS1 and the first long side LS1 meet may be the first corner C1. The point where the first short side SS1 and the second long side LS2 meet may be the second corner C2. The point where the second short side SS2 and the second long side LS2 meet may be the third corner C3. The point where the second short side SS2 and the first long side LS1 meet may be the fourth corner C4.

[0031] The display device 1 may include stands 20 , 30 , 40 , 50 that support the head 10 .

[0032] The stand 20 , 30 , 40 , 50 may include a base 20 , a pole 30 , a rotating connector 40 , and a support arm 50 .

[0033] The stands 20 , 30 , 40 , 50 may be removably coupled to the head 10 .

[0034] The base 20 is placed on the ground. The base 20 may be round or square. A plurality of wheels 20W may be provided on the underside of the base 20.

[0035] A plug CWa connected to the power cable CW can be connected to a concentric plug that supplies external power.

[0036] The jack CWb of the power cable CW can be connected to the base 20 .

[0037] A battery (not shown) may be built into the base 20, the pole 30, the support arm 50, and / or the head 10, and may be charged by power supplied via the power cable CW. The display device 1 may be powered by the battery and operated while being separated from the power cable CW.

[0038] The pole 30 may extend vertically from the base 20. The lower end of the pole 30 may be coupled to the base 20 adjacent the periphery of the pole 30.

[0039] The support arm 50 can extend in a direction intersecting the pole 30 and can be connected to the upper end of the pole 30. The rotary connector 40 can be located between the head 10 and the support arm 50 and can be connected to the head 10 and the support arm 50.

[0040] The head 10 may be supported by stands 20, 30, 40, 50 and spaced above the ground.

[0041] The rotary connector 40 can rotate the head 10 up and down or left and right. When an external force is applied to the rotary connector 40, the head 10 can be rotated in one or more directions among the up, down, left, and right directions.

[0042] The rotary connector 40 and the head 10 can have a detachable structure.

[0043] FIG. 2 is a block diagram showing the configuration of a display device according to an embodiment of the present disclosure.

[0044] Referring to FIG. 2, the display device 1 may include a broadcast receiving unit 130, an external device interface 135, a memory 140, a user input interface 150, a controller 170, a wireless communication interface 173, a display 180, a speaker 185, and a power supply circuit 190.

[0045] The broadcast receiving unit 130, the external device interface 135, the memory 140, the user input interface 150, the controller 170, the wireless communication interface 173, the display 180, the speaker 185, and the power supply circuit 190 may each be provided in the head 10. However, this is not a limitation, and some of the components may also be provided in the stands 20, 30, 40, and 50.

[0046] The broadcast receiving unit 130 may include a tuner 131 , a demodulator 132 , and a network interface 133 .

[0047] The tuner 131 can tune to a specific broadcast channel in accordance with a channel tuning command, and can receive a broadcast signal of the specific tuned broadcast channel.

[0048] The demodulator 132 can separate the received broadcast signal into a video signal, an audio signal, and a data signal related to the broadcast program, and can restore the separated video signal, audio signal, and data signal into an outputtable form.

[0049] The external device interface 135 can receive and communicate to the controller 170 or memory 140 an application or list of applications in a nearby external device.

[0050] The external device interface 135 can provide a connection path between the display device 1 and an external device. The external device interface 135 can receive one or more of video and audio output from an external device connected to the display device 1 wirelessly or via a wire, and transmit the video and audio to the controller 170.

[0051] The external device interface 135 may include a plurality of external input terminals, which may include an RGB terminal, one or more HDMI (High Definition Multimedia Interface (registered trademark)) terminals, and a component terminal.

[0052] A video signal of an external device input via the external device interface 135 can be output via the display 180. An audio signal of an external device input via the external device interface 135 can be output via the speaker 185.

[0053] The external device that can be connected to the external device interface 135 may be any one of a set-top box, a Blu-ray player (registered trademark: same below), a DVD player, a game console, a sound bar, a smartphone, a PC, a USB memory, and a home theater, but these are merely examples.

[0054] The external device interface 135 may be provided on the head 10 or on any one or more of the stands 20, 30, 40, 50.

[0055] The network interface 133 can provide an interface for connecting the display device 1 to a wired / wireless network including the Internet network.

[0056] The network interface 133 can send and receive data to and from other users or other electronic devices via the connected network or other networks linked to the connected network.

[0057] The network interface 133 can transmit some content data stored in the display device 1 to a selected user or a selected electronic device among other users or other electronic devices pre-registered in the display device 1.

[0058] The network interface 133 can connect to a predetermined web page via the connected network or another network linked to the connected network. The network interface 133 can connect to a predetermined web page via the network and send and receive data to and from the corresponding server.

[0059] The network interface 133 can receive content or data provided by a content provider or a network operator. The network interface 133 can receive content and related information such as movies, advertisements, games, VOD, and broadcast signals provided by a content provider or a network operator via a network.

[0060] The network interface 133 can receive firmware update information and update files provided by a network operator, and can transmit data to the Internet or a content provider or a network operator.

[0061] The network interface 133 can select and receive a desired application from among applications that are open to the public via a network.

[0062] The memory 140 can store programs for signal processing and control within the controller 170 and store processed video, audio or data signals.

[0063] The memory 140 can perform a function for temporarily storing video, audio, or data signals input from the external device interface 135 or the network interface 133, and can store information about a specific image through a channel storage function.

[0064] The memory 140 can store an application or a list of applications input from the external device interface 135 or the network interface 133 .

[0065] The display device 1 can play content files (moving image files, still image files, music files, document files, application files, etc.) stored in the memory 140 and provide them to the user.

[0066] The user input interface 150 can transmit a signal input by the user to the controller 170 or transmit a signal from the controller 170 to the user. For example, the user input interface 150 can receive and process control signals such as power on / off, channel selection, and screen setting from the remote control device 200 according to various communication methods such as Bluetooth (registered trademark: the same applies hereinafter), WB (Ultra Wideband), ZigBee, RF (Radio Frequency) communication method, or infrared (IR) communication method, or can process control signals from the controller 170 to be transmitted to the remote control device 200.

[0067] The user input interface 150 can transmit control signals input from local keys (not shown) such as a power key, a channel key, a volume key, and a setting value to the controller 170 .

[0068] The video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. The video signal processed by the controller 170 may be input to an external output device via the external device interface 135.

[0069] The audio signal processed by the controller 170 can be output as audio to a speaker 185. The audio signal processed by the controller 170 can be input to an external output device via the external device interface 135.

[0070] In addition, the controller 170 can control the overall operation within the display device 1.

[0071] The controller 170 can control the display device 1 according to user commands or internal programs input via the user input interface 150, and can connect to a network to download an application or list of applications desired by the user into the display device 1.

[0072] The controller 170 allows the channel information selected by the user to be output via the display 180 or the speaker 185 together with the processed video or audio signal.

[0073] The controller 170 enables a video signal or audio signal from an external device, such as a camera or camcorder, input via the external device interface 135 to be output via the display 180 or the speaker 185 in accordance with an external device video playback command received via the user input interface 150.

[0074] The controller 170 may control the display 180 to display an image, for example, broadcast image input via the tuner 131, externally input image input via the external device interface 135, image input via the network interface unit, or image stored in the memory 140, so that the image is displayed on the display 180. In this case, the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

[0075] The controller 170 can control the playback of content stored in the display device 1, received broadcast content, or externally input content, and the content can be in various forms such as broadcast video, externally input video, audio file, still image, connected web screen, document file, etc.

[0076] The wireless communication interface 173 can communicate with an external device via wired or wireless communication. The wireless communication interface 173 can perform short-range communication with the external device. For this purpose, the wireless communication interface 173 can be implemented using Bluetooth. TM ), RFID (Radio Frequency Identification), Infrared Data Associated with Bluetooth (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies can be used to support short-range communication.

[0077] The wireless communication interface 173 can support wireless communication between the display device 1 and a wireless communication system, between the display device 1 and another display device 1, or between the display device 1 and a network in which the display device (100 or an external server) is located via a short-range wireless communication network. The short-range wireless communication network may be a wireless personal area network.

[0078] The wireless communication interface 173 can sense (or recognize) wearable devices around the display device 1 that are capable of communication.

[0079] If the detected wearable device is a device authenticated to communicate with the display device 1 according to the present invention, the controller 170 can transmit at least a portion of the data processed by the display device 1 to the wearable device via the wireless communication interface 173. Thus, the user of the wearable device can use the data processed by the display device 1 via the wearable device.

[0080] The display 180 can convert the video signal, data signal, OSD signal processed by the controller 170, or the video signal, data signal, etc. received by the external device interface 135 into R, G, B signals, respectively, to generate driving signals.

[0081] Meanwhile, since the display device 1 shown in FIG. 2 is merely one embodiment of the present invention, some of the illustrated components may be integrated, added, or omitted according to the specifications of the display device 1 actually implemented.

[0082] That is, two or more components may be combined into one component, or one component may be divided into two or more components, as necessary. Note that the functions performed in each block are for explaining the embodiments of the present invention, and the specific operations and devices thereof do not limit the scope of the present invention.

[0083] According to another embodiment of the present invention, the display device 1 may receive and play back video via a network interface 133 or an external device interface 135, instead of including a tuner 131 and a demodulator 132, as shown in FIG. 2.

[0084] For example, the display device 1 may be realized by separating it into a video processing device such as a set-top box for receiving broadcast signals or content corresponding to various network services, and a content playback device for playing back content input from the video processing device.

[0085] In this case, the operating method of the display device according to the embodiment of the present invention described below may be performed not only by the display device 1 as described with reference to FIG. 2, but also by any one of a video processing device such as the separate set-top box or a content playback device having a display 180 and a speaker 185.

[0086] 3A and 3B are diagrams illustrating the structure of a display device according to an embodiment of the present disclosure from the viewpoint of power supply.

[0087] Referring to FIG. 3A, the display device 1 may include a stand 20 , 30 , 40 , 50 and a head 10 .

[0088] The stand 20 , 30 , 40 , 50 may include a base 20 , a pole 30 , a rotating connector 40 , and a support arm 50 .

[0089] The stands 20 , 30 , 40 , 50 may be removably coupled to the head 10 .

[0090] The base 20 may include a power board 21. That is, the power board 21 may be built into the base 20. The power board 21 may receive AC power from an external power source connected via a plug CWa and convert the received AC power into DC power. The power board 21 may supply DC power to the head 10 via one or more pogo pins 41, 43 included in a connector 40.

[0091] The power board 21 may include an adapter capable of converting AC power to DC power.

[0092] The rotary connector 40 may include one or more pogo pins 41, 43. The one or more pogo pins 41, 43 may be pins that electrically connect the head 10 and the stands 20, 30, 40, 50.

[0093] In FIG. 3A, the rotary connector 40 is illustrated as having two pogo pins 41 and 43, but this is merely an example.

[0094] One or more pogo pins 41, 43 can be connected to a head connector 11 that includes one or more contact terminals that contact the one or more pogo pins 41, 43. The head connector 11 can be a pogo pin socket into which the pogo pins 41, 43 are inserted to form electrical contact.

[0095] The head 10 may include a head connector 11 , a charging board 13 , a battery 15 , a backlight driving circuit 17 , a main board 19 , and a display 180 .

[0096] The head connector 11 may include one or more contact terminals for making electrical contact with one or more pogo pins 41, 43. The head connector 11 may provide DC power supplied from one or more pogo pins 41, 43 to the charging board 13 via the one or more contact terminals. The head connector 11 may be an interface for electrical connection between one or more pogo pins 41, 43 and the charging board 13.

[0097] The charging board 13 can provide DC power supplied from the power board 21 to the components provided in the head 10.

[0098] The charging board 13 can provide the DC power supplied from the power board 21 to one or more of the battery 15 , the backlight driving circuit 17 , and the main board 19 .

[0099] The battery 15 can supply DC power to at least one of the backlight driving circuit 17 and the main board 19 .

[0100] The battery 15 may be included on the charging board 13 or may be provided separately from the charging board 13 .

[0101] When the power board 21 or the adapter provided on the power board 21 is separated from the head 10, the battery 15 can supply DC power to the head 10 through discharge.

[0102] The backlight driving circuit 17 may be a circuit for driving a backlight of the display 180. The display 180 may include a liquid crystal display panel and a backlight that outputs light to the liquid crystal display panel. The backlight driving circuit 17 may control the light output of the backlight based on a dimming value.

[0103] The main board 19 can control the overall operation of the head 10. The main board 19 can include one or more processors, each of which can be configured from a single chip.

[0104] The main board 19 can acquire the operating status of the head 10 .

[0105] The main board 19 can obtain the input voltage of the charging board 13 which is input to the charging board 13 of the head 10 via the pogo pins 41 and 43 .

[0106] The main board 19 can determine whether an error has occurred in the pogo pins 41 and 43 based on the acquired operating state of the head and the input voltage of the charging board 13 .

[0107] If it is determined that an error has occurred in the pogo pins 41 and 43 (S707), the main board 19 can control the charging of the battery 15 to be turned off.

[0108] The display 180 can display an image. If the display 180 includes an organic light emitting diode (OLED) display panel, the backlight driving circuit 17 may not be included in the head 10.

[0109] FIG. 3B is a diagram illustrating an example in which one or more pogo pins 41, 43 are represented by a resistor 300 when the one or more pogo pins 41, 43 are represented by an equivalent circuit.

[0110] The more damage occurs to the pogo pins 41 and 43, the greater the resistance of the pogo pins 41 and 43 may be.

[0111] FIG. 4 is a diagram illustrating the configuration of a charging board according to an embodiment of the present disclosure.

[0112] The charging board 13 may include a direct current / direct current converter (DC / DC converter 410 ), a charging circuit 430 , a boost circuit 450 and a detection circuit 470 .

[0113] The DC / DC converter 410 can convert the DC power transmitted from the power board 21 into a constant voltage and supply the converted constant voltage to the main board 19 .

[0114] For example, the DC / DC converter 410 can step down a DC voltage of 20V to 13V and supply the stepped-down DC voltage of 13V to the main board 19.

[0115] The charging circuit 430 can charge the battery 15 using the DC power source transmitted from the power board 21. The charging circuit 430 can control the charging or discharging of the battery 15. The charging circuit 430 can include a battery management system integrated chip (BMS IC) for controlling the charging or discharging of the battery 15.

[0116] The charging circuit 430 can charge the battery 15 according to a charge-on signal received from the main board 19, and can interrupt charging of the battery 15 according to a charge-off signal.

[0117] The boost circuit 450 can change the output voltage of the battery 15 to a preset voltage and provide the changed voltage to the DC / DC converter 410. The boost circuit 450 can increase the output voltage of the battery 15 to a preset voltage and output the increased voltage.

[0118] For example, the boost circuit 450 can convert the output voltage of the battery 15 into a DC voltage of 17.5V and output the DC voltage of 17.5V.

[0119] The detection circuit 470 can detect the fastening state of the pogo pins 41, 43 using the DC power output from the pogo pins 41, 43. The detection circuit 470 can detect the presence or absence of an error in the pogo pins 41, 43 using the DC power output from the pogo pins 41, 43 and input to the charging board 13.

[0120] The detection circuit 470 can detect whether the pogo pins 41 and 43 are fastened or not using the DC power output from the pogo pins 41 and 43 , and can transmit the detection result to the main board 19 .

[0121] The detection circuit 470 may include one or more Zener diodes and an LDO (Low Drop Out) circuit.

[0122] FIG. 2 illustrates a circuit diagram of a detection circuit according to an embodiment of the present disclosure.

[0123] 5, the detection circuit 470 may include a Zener diode 510 and an LDO circuit 530. The detection circuit 470 may further include a plurality of resistors R246, R247, and a capacitor C244 connected between the Zener diode 510 and the LDO circuit 530.

[0124] An input voltage input to the charging board 13 via the pogo pins 41 and 43 may be applied to the cathode terminal of the Zener diode 510. An anode terminal of the Zener diode 510 may be connected to one end of a resistor R246.

[0125] The detection circuit 470 may further include a capacitor C245 connected between the LDO circuit 530 and the ACD pin ACD.

[0126] The Zener diode 510 may be a diode designed to allow current to flow in the reverse direction at a specific voltage (or Zener voltage). The Zener voltage of the Zener diode 510 may be 15.5V.

[0127] When 20V output from the pogo pins 41 and 43 is input to the cathode terminal of the Zener diode 510, 4.5V, which is obtained by subtracting the Zener voltage of 15.5V from 20V, can be applied to the LDO circuit 530.

[0128] The LDO circuit 530 may be a circuit that outputs a preset voltage when the input voltage is equal to or greater than a specific voltage. The LDO circuit 530 may output 3.3V when the input voltage is equal to or greater than 3.5V, and may reduce the output voltage in accordance with the input voltage when the input voltage is less than 3.5V. The LDO circuit 530 may linearly reduce the output voltage in accordance with the input voltage when the input voltage is less than 3.5V.

[0129] FIG. 6 is a diagram illustrating the operating principle of an LDO circuit according to an embodiment of the present disclosure.

[0130] Referring to FIG. 6, a graph 600 illustrating the relationship between the input voltage and the output voltage of the LDO circuit 530 is shown.

[0131] The horizontal axis of the graph 600 may represent the input voltage of the LDO circuit 530, and the vertical axis of the graph 600 may represent the output voltage output by the LDO circuit 530.

[0132] The LDO circuit 530 can output a constant voltage of 3.3 V when the input voltage is 3.5 V or higher. When the input voltage is less than 3.5 V, the LDO circuit 530 can output an output voltage proportional to the input voltage.

[0133] When the input voltage of the LDO circuit 530 is between 3.5V and 4.5V, the output voltage of the LDO circuit 530 is always 3.3V. However, when the input voltage is less than 3.5V, the output voltage may also be reduced in proportion to the input voltage, as shown in graph 600.

[0134] When a DC voltage of 20 V is applied to the detection circuit 470, a DC voltage of 4.5 V can be applied to the LDO circuit 530 by the Zener diode 510, which has a Zener voltage of 15.5 V. Since the input voltage of the LDO circuit 530 is 3.5 V or higher, the LDO circuit 530 can output 3.3 V.

[0135] When a DC voltage of 18 V is applied to the detection circuit 470, a DC voltage L of 2.5 V can be applied to the LDO circuit 530 by the Zener diode 510 having a Zener voltage of 15.5 V. Since the input voltage of the LDO circuit 530 is less than 3.5 V, the LDO circuit 530 can output 1.7 V according to the graph 600.

[0136] The output voltage of the LDO circuit 530 may be the output voltage of the detection circuit 470 .

[0137] The main board 19 can determine whether or not there is a failure in fastening of the pogo pins 41 and 43 based on the output voltage of the detection circuit 470.

[0138] The main board 19 can determine whether or not there is a failure in fastening of the pogo pins 41 and 43 based on the operating state of the head 10 and the output voltage of the detection circuit 470 .

[0139] The operating state of the head 10 may be a combination of one or more of the following states: a screen-on state of the display 180, a screen-off state of the display 180, a charging-on state of the battery 15, or a charging-off state of the battery 15.

[0140] The screen-off state may be a state in which no power is supplied to the display 180, or a standby state in which only a minimum amount of power is supplied to the display 180.

[0141] In the following, the fully charged state of the battery 15 may refer to a state in which the battery 15 is fully charged.

[0142] 7 to 10 are diagrams illustrating a process for determining whether an error has occurred in a pogo pin based on the operating state of the head and the charging state of the battery according to an embodiment of the present disclosure.

[0143] FIG. 7 is a flowchart illustrating a method for operating a display device according to an embodiment of the present disclosure.

[0144] Referring to FIG. 7, the main board 19 of the display device 100 can acquire the operating state of the head 10 (S701).

[0145] In one embodiment, the operational state of the head 10 may be a state indicating a combination between the screen state of the display 180 and the charge state of the battery 15 .

[0146] The screen state of the display 180 may be either a screen-off state in which the screen is turned off or a screen-on state in which the screen is turned on.

[0147] The charging state of the battery 15 may be either a charge-on state in which the battery 15 is charging, or a charge-off state in which the battery 15 is not charging. When the battery 15 is fully charged, the battery 15 may not be charging. Accordingly, the fully charged state of the battery 15 may be treated the same as the charge-off state.

[0148] The head 10 can be in any one of several operating states.

[0149] The first operating state of the head 10 may be a screen-on state of the display 180 and a charging-on state of the battery 15 .

[0150] The second operating state of the head 10 can be a screen-on state and a battery 15 charging-off state.

[0151] A third operating state of the head 10 may be a screen-off state and a battery 15 charging-on state.

[0152] A fourth operating state of the head 10 may be a screen-off state and a battery 15 charging-off state.

[0153] The main board 19 of the display device 100 can obtain the input voltage of the charging board 13 input to the charging board 13 of the head 10 through the pogo pins 41 and 43 (S703).

[0154] The main board 19 can obtain the voltage at the point connected to the charging board 13 from the head connector 11, which is in electrical contact with the pogo pins 41 and 43. The voltage at the point connected to the charging board 13 from the head connector 11, which is in electrical contact with the pogo pins 41 and 43, can be the input voltage of the charging board 13.

[0155] The main board 19 of the display device 100 can determine whether an error occurs in the pogo pins 41 and 43 based on the acquired operating state of the head and the input voltage of the charging board 13 (S705).

[0156] The error of the pogo pins 41, 43 may be caused by one or more of the following: damage to the pogo pins 41, 43 themselves; poor contact between the pogo pins 41, 43 and the head connector 11; and the presence of foreign matter attached to the pogo pins 41, 43.

[0157] In one embodiment, the main board 19 can perform a primary verification based on the acquired operating status of the head 10 and the input voltage of the charging board 13, and can determine whether there is an error in the pogo pins 41, 43 based on the verification results of the primary verification.

[0158] In yet another embodiment, the main board 19 can perform a secondary verification after the primary verification based on the acquired operating status of the head 10 and the input voltage of the charging board 13, and can determine whether there is an error in the pogo pins 41, 43 based on the verification result of the secondary verification.

[0159] The main board 19 can obtain the output voltage of the detection circuit 470 provided in the charging board 13 based on the input voltage of the charging board 13 .

[0160] The main board 19 can determine whether or not there is an error in the pogo pins 41 and 43 based on the operating state of the head 10 and the output voltage of the detection circuit 470 .

[0161] If it is determined that an error has occurred in the pogo pins 41 and 43 (S707), the main board 19 of the display device 100 can control the battery 15 to stop charging (S709).

[0162] If the main board 19 determines that an error has occurred in the pogo pins 41 and 43, it can transmit a charge-off signal to the charging board 13 to stop charging the battery 15. The charging board 13 can stop charging the battery 15 in response to the charge-off signal.

[0163] This allows the battery 15 to be continuously charged, and prevents the risk of overheating and fire that may occur in the battery 15.

[0164] If it is determined that an error has occurred in the pogo pins 41, 43, the main board 19 can display a notice indicating the occurrence of an error in the pogo pins 41, 43 on the display 180. The notice can include text and an image indicating that one or more problems have occurred, such as poor fastening of the pogo pins 41, 43 or damage to the pogo pins 41, 43.

[0165] The main board 19 can turn off the screen of the display 180 after a certain period of time for system stability or to enter standby mode. After that, the main board 19 can turn off charging of the battery 15.

[0166] When the screen of the display 180 is off and the battery 15 is off, the power consumption of the head 10 is less than 0.5 W, so the possibility of fire caused by the pogo pins 41 and 43 can be eliminated.

[0167] The main board 19 can use the power source charged in the battery 15 to display on the display 180 a guide for checking for damage to the pogo pins 41 and 43 or for refastening the pins.

[0168] When it is determined that an error has occurred in the pogo pins 41, 43, the main board 19 can turn off charging of the battery 15, discharge the battery 15, and turn on the screen of the display 180. The main board 190 can display a notice indicating the occurrence of an error in the pogo pins 41, 43 on the on screen.

[0169] The user can immediately check the status of the pogo pins 41 and 43 through the notification displayed on the screen and take appropriate action.

[0170] In yet another embodiment, when the main board 19 determines that an error has occurred in the pogo pins 41, 43, it can display a notice on the display 180 indicating that an error has occurred in the pogo pins 41, 43, and then turn off charging of the battery 15 and turn off the screen of the display 180.

[0171] The main board 19 can turn on the screen of the display 180 using the charging power of the battery 15, and can display on the turned-on screen a guide for checking the fastening state of the pogo pins 41, 43 and for refastening.

[0172] FIG. 8 may be a flowchart illustrating a process of determining whether an error occurs in the pogo pins 41 and 43 when the first operating state of the head 10 is a screen-on state of the display 180 and a charging-on state of the battery 15.

[0173] In particular, FIG. 8 may be a process of determining whether an error occurs in the pogo pins 41 and 43 through two-step verification.

[0174] FIG. 8 may be an embodiment that embodies steps S705 and S707 that are executed after step S703 in FIG.

[0175] Referring to FIG. 8, the main board 19 can obtain the output voltage of the detection circuit 470 using the input voltage of the charging board 13 (S801).

[0176] The detection circuit 470 can output an output voltage in response to the input voltage via a Zener diode 510 and an LDO circuit 530 .

[0177] The main board 19 can receive the output voltage from the detection circuit 470 .

[0178] The main board 19 can determine whether the output voltage of the detection circuit 470 is equal to or lower than the first reference voltage (S803).

[0179] The first reference voltage may be, for example only, 1.8V when the screen of the display 180 is on and the battery 15 is charging. The first reference voltage may be a voltage that is measured and set in advance through an experiment for an error occurrence condition of the pogo pins 41 and 43.

[0180] The process in which the main board 19 determines whether the output voltage of the detection circuit 470 is equal to or lower than the first reference voltage may be referred to as a primary verification process.

[0181] If the main board 19 determines that the output voltage of the detection circuit 470 is lower than the first reference voltage, it can determine whether the output voltage of the detection circuit 470 is lower than a second reference voltage that is lower than the first reference voltage (S805).

[0182] In one embodiment, the second reference voltage may be 1.74V, but this is merely an example. The second reference voltage may be a voltage that is measured and set in advance through an experiment for an error condition of the pogo pins 41 and 43.

[0183] The process in which the main board 19 determines whether the output voltage of the detection circuit 470 is equal to or lower than the second reference voltage may be referred to as a secondary verification process.

[0184] The main board 19 may perform a secondary verification process to determine whether the output voltage of the detection circuit 470 being lower than the first reference voltage is due to noise.

[0185] If it is determined that the output voltage of the detection circuit 470 is smaller than the small second reference voltage, the main board 19 can determine that an error has occurred in the pogo pins 41 and 43 (S807).

[0186] If it is determined that an error has occurred in the pogo pins 41 and 43, the main board 19 can control the charging board 13 to turn off charging of the battery 15.

[0187] FIG. 9 may be a flowchart illustrating a process of determining whether an error occurs in the pogo pins 41 and 43 in the second operating state of the head 10, which is the screen-on state of the display 180 and the charging-off state of the battery 15 (or the battery is fully charged).

[0188] FIG. 9 may be a process of determining whether an error occurs in the pogo pins 41 and 43 through the verification of step 1.

[0189] FIG. 9 may be an embodiment that embodies steps S705 and S707 that are executed after step S703 in FIG.

[0190] Referring to FIG. 9, the main board 19 can obtain the output voltage of the detection circuit 470 using the input voltage of the charging board 13 (S901).

[0191] The detection circuit 470 can output an output voltage in response to the input voltage via a Zener diode 510 and an LDO circuit 530 .

[0192] The main board 19 can receive the output voltage from the detection circuit 470 .

[0193] The main board 19 can determine whether the output voltage of the detection circuit 470 is equal to or lower than the third reference voltage (S903).

[0194] The third reference voltage may be 3.0 V when the screen of the display 180 is on and the battery 15 is off, but this is merely an example. The third reference voltage may be a voltage that is measured and set in advance through an experiment for an error condition of the pogo pins 41 and 43.

[0195] The process in which the main board 19 determines whether the output voltage of the detection circuit 470 is equal to or lower than the third reference voltage may be referred to as a primary verification process.

[0196] If the main board 19 determines that the output voltage of the detection circuit 470 is smaller than the third reference voltage, it can determine that an error has occurred in the pogo pins 41 and 43 (S905).

[0197] When the main board 19 determines that an error has occurred in the pogo pins 41 and 43, it can display a notice on the display 180 indicating that an error has occurred in the pogo pins 41 and 43.

[0198] After a certain period of time, the main board 19 can turn off the screen of the display 180 for system stability (standby state).

[0199] When the screen of the display 180 is off and the battery 15 is off, the power consumption of the head 10 is less than 0.5 W, so the possibility of fire caused by the pogo pins 41 and 43 can be eliminated.

[0200] The main board 19 can use the power source charged in the battery 15 to display on the display 180 a guide for checking for damage to the pogo pins 41 and 43 or for refastening the pins.

[0201] When the charging state of the battery 15 is in the charge-off state or the fully charged state, only the primary verification is performed because the battery 15 is not in a charging state, and therefore the probability of the battery 15 overheating is very low.

[0202] When the main board 19 detects an error in the pogo pins 41 and 43 by performing a primary verification while the display 180 is in the screen-off state and the battery 15 is fully charged, it can record the output voltage of the detection circuit 470 in memory (not shown).

[0203] When the charging state of the battery 15 changes from a fully charged state to a charging-on state, the main board 19 can perform a secondary verification by comparing the recorded output voltage with a threshold voltage that is smaller than a third reference voltage, which may be 2.9V.

[0204] FIG. 10 may be a flowchart illustrating a process of determining whether an error occurs in the pogo pins 41 and 43 when the display 180 is in a screen-off state and the battery 15 is in a charging-on state, which is the third operating state of the head 10.

[0205] In particular, FIG. 10 may be a process of determining whether an error occurs in the pogo pins 41 and 43 through two-step verification.

[0206] FIG. 10 may be an embodiment that embodies steps S705 and S707 that are executed after step S703 in FIG.

[0207] Referring to FIG. 10, the main board 19 can obtain the output voltage of the detection circuit 470 using the input voltage of the charging board 13 (S1001).

[0208] The detection circuit 470 can output an output voltage in response to the input voltage via a Zener diode 510 and an LDO circuit 530 .

[0209] The main board 19 can receive the output voltage of the detection circuit 470 from the detection circuit 470 .

[0210] The main board 19 can determine whether the output voltage of the detection circuit 470 is equal to or lower than the fourth reference voltage (S1003).

[0211] When the screen of the display 180 is off and the battery 15 is charging, the fourth reference voltage may be 2.6 V, but this is merely an example. The fourth reference voltage may be a voltage that is measured and set in advance through an experiment for an error condition of the pogo pins 41 and 43.

[0212] The process in which the main board 19 determines whether the output voltage of the detection circuit 470 is equal to or lower than the fourth reference voltage may be referred to as a primary verification process.

[0213] If the output voltage of the detection circuit 470 is equal to or lower than the fourth reference voltage, the main board 19 may control the charging board 13 to increase the charging current of the battery 15 (S1005).

[0214] The main board 19 can increase the charging current of the battery 15 by a certain amount, thereby increasing the power consumed by the head 10 to 60W. This is because the power consumed by the head 10 in the third operating state is increased to the same amount as the power consumed by the head 10 in the first operating state, thereby increasing the change in the output voltage of the detection circuit 470. If the change in the output voltage of the detection circuit 470 increases, it can be more accurately determined whether the pogo pins 41 and 43 are properly connected. This will be described later.

[0215] Thereafter, the main board 19 can determine whether the output voltage of the detection circuit 470 is lower than a fifth reference voltage that is lower than the fourth reference voltage (S1007).

[0216] In one embodiment, the fourth reference voltage may be 2.59 V, but this is merely an example. The fifth reference voltage may be a voltage that is measured and set in advance by experiment.

[0217] The process in which the main board 19 determines whether the output voltage of the detection circuit 470 is equal to or lower than the fifth reference voltage may be referred to as a secondary verification process.

[0218] The main board 19 may perform a secondary verification process to determine whether the output voltage of the detection circuit 470 being lower than the fourth reference voltage is due to noise.

[0219] If the main board 19 determines that the output voltage of the detection circuit 470 is smaller than the fifth reference voltage, it determines that an error has occurred in the pogo pins 41 and 43 (S1009).

[0220] When it is determined that an error has occurred in the pogo pins 41, 43, the main board 19 can control the charging board 13 to turn off charging of the battery 15. The main board 19 can then supply power to the display 180 using the charging power of the battery 15. The display 180 can display a notice indicating that an error has occurred in the pogo pins 41, 43 via the power supplied from the battery 15.

[0221] FIG. 11 shows a method for verifying errors in pogo pins according to each operating state of the head according to the present disclosure. This is a schematic diagram.

[0222] First, the power consumption structure of the display device 1 according to the embodiment of the present disclosure will be described, however, the numerical values ​​of the power consumption structure are merely examples.

[0223] The screen off state may be a standby state in which the power mode of the display 180 is in a standby mode.

[0224] With the screen on and the battery 15 charging on (when charging), the power consumption of the head 10 may be 60W.

[0225] The power consumption of the head 10 with the screen on and the battery 15 fully charged may be 30W.

[0226] The power consumption of the head 10 with the screen off and the battery 15 charging on may be 40.5W.

[0227] The power consumption of the head 10 with the screen off and the battery 15 fully charged may be 0.5W.

[0228] In the following, it is assumed that the adapter provided on the power board 21 outputs a DC voltage of 20V.

[0229] First, a first operating state of the head 10 in which the screen of the display 180 is on and the charging of the battery 15 is on will be described.

[0230] In the first operating state, the power consumption of the head 10 is 60 W, and the current flowing through the head 10 or the pogo pins 41, 43 is 3 A. When the pogo pins 41, 43 are normally connected to the head connector 11, the resistance of the pogo pins 41, 43 is measured at 10 mOhm, the input voltage input to the charging board 13 is 20 V, and the output voltage of the detection circuit 470 (ACD circuit) is 3.3 V.

[0231] The input voltage input to the charging board 13 may be the input voltage of the detection circuit 470 .

[0232] When the pogo pins 41 and 43 are connected to the abnormal head connector 11, the resistance of the pogo pins 41 and 43 is measured as 1 ohm, the input voltage input to the charging board 13 is 17V, and the output voltage of the detection circuit 470 (ACD circuit) is 1.74V.

[0233] In the first operating state, if the output voltage of the detection circuit 470 is 1.8V or more and 3.3V or less, the main board 19 can determine that no error occurs in the pogo pins 41 and 43. This is to prevent the display device 1 from being powered off indiscriminately, which would cause a loss of system stability.

[0234] If the output voltage of the detection circuit 470 is lower than the first reference voltage (1.8V), the main board 19 can perform a secondary verification to determine whether it is a temporary effect caused by noise.

[0235] The main board 19 can perform the secondary verification process because the output voltage of the detection circuit 470 is 1.74V, which is lower than the first reference voltage (1.8V).

[0236] Next, a second operating state of the head 10 in which the screen of the display 180 is on and the battery 15 is off or fully charged will be described.

[0237] In the second operating state, the power consumption of the head 10 is 30 W, and the current flowing through the head 10 is 1.5 A. When the pogo pins 41 and 43 are normally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured at 10 mOhm, the input voltage input to the charging board 13 is 20 V, and the output voltage of the detection circuit 470 (ACD circuit) is 3.3 V.

[0238] When the pogo pins 41 and 43 are abnormally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured as 1 ohm, the input voltage input to the charging board 13 is 18.5V, and the output voltage of the detection circuit 470 (ACD circuit) is 2.9V.

[0239] In the second operating state, if the output voltage of the detection circuit 470 is greater than or equal to 3.0 V and less than or equal to 3.3 V, the main board 19 can determine that no error has occurred in the pogo pins 41 and 43. This is to prevent the display device 1 from being powered off indiscriminately, which would cause a loss of system stability.

[0240] If the output voltage of the detection circuit 470 is lower than the third reference voltage 3.0V, the main board 19 can determine that an error has occurred in the pogo pins 41 and 43.

[0241] Although the output voltage of the detection circuit 470 is lower than the third reference voltage 3.0V, the main board 19 may not perform the secondary verification because the charging state of the battery 15 is in the charge-off state or the fully charged state.

[0242] Next, a third operating state of the head 10 in which the screen of the display 180 is off and the charging of the battery 15 is on will be described.

[0243] In the third operating state, the power consumption of the head 10 is 40.5 W, and the current flowing through the head 10 is 2 A. When the pogo pins 41 and 43 are normally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured at 10 mOhm, the input voltage input to the charging board 13 is 20 V, and the output voltage of the detection circuit 470 (ACD circuit) is 3.3 V.

[0244] When the pogo pins 41 and 43 are abnormally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured as 1 ohm, the input voltage input to the charging board 13 is 18V, and the output voltage of the detection circuit 470 (ACD circuit) is 2.59V.

[0245] In the third operating state, if the output voltage of the detection circuit 470 is 2.6V or more and 3.3V or less, the main board 19 can determine that no error occurs in the pogo pins 41 and 43. This is to prevent the display device 1 from being powered off indiscriminately, which would cause a loss of system stability.

[0246] If the output voltage of the detection circuit 470 is lower than the fourth reference voltage of 2.6V, the main board 19 can determine that an error has occurred in the pogo pins 41 and 43.

[0247] The main board 19 can perform the second verification process because the output voltage of the detection circuit 470 is 2.59V, which is lower than the fourth reference voltage 2.6V.

[0248] Next, a fourth operating state of the head 10 in which the screen of the display 180 is off and the charging of the battery 15 is off will be described.

[0249] In the fourth operating state, the power consumption of the head 10 is 0.5 W, and the current flowing through the head 10 is 0.025 A. When the pogo pins 41 and 43 are normally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured at 10 mOhm, the input voltage input to the charging board 13 is 20 V, and the output voltage of the detection circuit 470 (ACD circuit) is 3.3 V.

[0250] When the pogo pins 41 and 43 are abnormally connected to the head connector 11, the resistance of the pogo pins 41 and 43 is measured as 1 ohm, the input voltage input to the charging board 13 is 19.975V, and the output voltage of the detection circuit 470 (ACD circuit) is 3.3V.

[0251] The main board 19 can only perform a primary verification process to determine whether the output voltage of the detection circuit 470 is equal to or greater than the sixth reference voltage of 3.3V.

[0252] This is because the power consumed by the head 10 is negligible, reducing the risk of fire.

[0253] As described above, in the embodiment of the present disclosure, one-stage or two-stage verification can be performed to determine whether an error has occurred in the pogo pins 41 and 43 depending on each operating state of the head 10. In particular, through the two-stage verification, whether an error has occurred in the pogo pins 41 and 43 can be determined more accurately.

[0254] Furthermore, the main board 19 can set the reference voltage used when executing the primary and secondary verifications to be different depending on the operating state of the head 10.

[0255] In one embodiment, the main board 19 can perform a primary verification when the head 10 and the stand 20 are connected via the pogo pins 41 and 43. The main board 19 can perform the primary verification according to the operating state of the head 10 when the output voltage of the detection circuit 470 is equal to or greater than a certain voltage. Here, the certain voltage may be 0.7V, but this is merely an example.

[0256] FIG. 12 is a diagram illustrating a control circuit according to an embodiment of the present disclosure.

[0257] The main board 19 may include a control circuit 1200. The control circuit 1200 may be a circuit for comparing the output voltage of the detection circuit 470 with a reference voltage and controlling the charging state of the battery 15 according to the comparison result.

[0258] The control circuit 1200 may include a comparator 1210 and a switch circuit 1230 .

[0259] The comparator 1210 may include a plurality of resistors R1, R2, and R3 and an amplifier IOP1. A reference voltage output by the detection circuit 470 when the pogo pins 41 and 43 are normally fastened may be applied to a negative terminal of the amplifier IOP1, and an actually measured output voltage output by the detection circuit 470 may be applied to a positive terminal of the amplifier IOP1.

[0260] The main board 19 can store reference voltages corresponding to each of a plurality of operating states of the head 10. To this end, the main board 19 can include a memory (not shown). The memory (not shown) can also be provided separately.

[0261] The main board 19 may store two reference voltages in memory for two-stage verification for the first and third operating states of the head 10, respectively.

[0262] The main board 19 may store one reference voltage in memory for one-stage verification for each of the second and fourth operating states of the head 10.

[0263] The comparator 1210 can amplify the error value between the reference voltage and the output voltage, and can transmit the amplified error value (output value) to the switch circuit 1230.

[0264] The switch circuit 1230 can output a signal indicating whether an error has occurred in the pogo pins 41 and 43 based on the amplified error value.

[0265] The switch circuit 1230 may include a plurality of resistors R4, R5, R6 and a switch T1, which may be an NPN-type transistor.

[0266] The switch circuit 1230 can output a low signal indicating that no error occurs in the pogo pins 41 and 43 when the amplified error value for each operating state of the head 10 is equal to or less than a preset value.

[0267] The low signal may be a control signal to turn on charging of the battery 15. The low signal may be transmitted to the charging board 13, and the charging board 13 may turn on charging of the battery 15 according to the low signal.

[0268] The switch circuit 1230 can output a high signal indicating that an error in the pogo pins 41 and 43 has occurred when the amplified error value for each operating state of the head 10 exceeds a preset value.

[0269] The high signal may be a control signal for turning off charging of the battery 15. The high signal may be transmitted to the charging board 13, and the charging board 13 may turn off charging of the battery 15 in accordance with the high signal. The high signal may be a signal for turning off the screen of the display 180 while turning off charging of the battery 15.

[0270] FIG. 13 is a diagram illustrating the reason why the power consumed by the head is increased when the head is in the third operating state according to an embodiment of the present disclosure.

[0271] 13, when the pogo pins 41 and 43 are normally connected in the first operating state of the head 10, the output voltage of the detection circuit 470 is 3.3 V, and when the pogo pins 41 and 43 are abnormally connected in the first operating state of the head 10, the output voltage is 1.74 V. In other words, the output voltage of the detection circuit 470 is reduced by 1.56 V compared to 3.3 V when the pogo pins 41 and 43 are normally connected.

[0272] In contrast, when the pogo pins 41 and 43 are normally connected in the third operating state of the head 10, the output voltage of the detection circuit 470 is 3.3 V, and when the pogo pins 41 and 43 are abnormally connected in the third operating state of the head 10, the output voltage is 2.9 V. In other words, the output voltage of the detection circuit 470 is reduced by 0.4 V compared to 3.3 V when the pogo pins 41 and 43 are normally connected.

[0273] As a result, in the third operating state, the difference between the output voltage of the detection circuit 470 when the pogo pins 41, 43 are abnormally connected and when they are normally connected is much smaller than in the first operating state.

[0274] This allows the accuracy of detecting imperfect fastening of the pogo pins 41 and 43 to be reduced.

[0275] In an embodiment of the present disclosure, the main board 19 can increase the power consumption of the head 10 in the third operating state by the power consumption in the first operating state.

[0276] For this reason, the main board 19 can increase the charging current of the battery 15 in the third operating state of the head 10, thereby increasing the power consumption of the head 10.

[0277] As the charging current of the battery 15 of the head 10 increases, the input voltage of the detection circuit 470 decreases, and the output voltage of the detection circuit 470 may also decrease.

[0278] This allows accurate verification of the fastening failure of the pogo pins 41, 43 in the third operating state of the head 10.

[0279] FIG. 14 is a flowchart illustrating a method of operating a display device according to yet another embodiment of the present disclosure.

[0280] The main board 19 of the display device 1 can detect a power-on signal (S1401).

[0281] The power-on signal may be a signal to turn on the power of the head 10 or the display 180 .

[0282] When the display device 1 is turned on in response to the power-on signal, the main board 19 can acquire the values ​​of multiple parameters including information about the display device 1 via a system on chip (SOC) (S1403).

[0283] The multiple parameters may include the screen mode of the display device 1, the maximum backlight drive value, the charge state of the battery 15 (e.g., Relative State Of Charge, RSOC), the current flowing to the battery 15, and the voltage supplied to the battery 15.

[0284] The main board 19 can calculate the power consumption of the head 10 and the charging power of the battery 15 based on the values ​​of a plurality of parameters (S1405).

[0285] The main board 19 can calculate the power consumption of the head 10 by multiplying the maximum power consumed by the LCD panel of the display 180 in the corresponding screen mode, the backlight driving value, and the backlight current coefficient.

[0286] The main board 19 can calculate the charging power of the battery by multiplying the current flowing through the battery 15 by the voltage supplied to the battery 15 .

[0287] The main board 19 can compare the output voltage of the detection circuit 470 with the reference voltage using the comparator 1210 of the control circuit 1200 (S1407).

[0288] The main board 19 can obtain a reference voltage based on the power consumption of the head 10 and the charging power of the battery 15 to determine the operating state of the head 10 and whether an error has occurred in the pogo pins 41 and 43.

[0289] The value of the reference voltage may change depending on the operating state of the head 10 .

[0290] The main board 19 can determine whether the comparator 1210 outputs a high signal (S1409), and if the comparator 1210 outputs a high signal, can display a notice on the display 180 indicating that an error has occurred in the pogo pins 41 and 43 (S1411).

[0291] Thereafter, the main board 19 can turn off the power to the display device 1 and stop charging the battery 15 (S1413).

[0292] The main board 19 can turn on the screen of the display 180 using the charging power of the battery 15, and can display on the screen a guide for checking the fastening state of the pogo pins 41, 43 and for refastening (S1415).

[0293] A display device 1 according to an embodiment of the present disclosure includes a stand 20, 30, 40, 50, a head 10 supported by the stand and including a display 180 and a battery 15, and the head is electrically connected to the stand via pogo pins 41, 43 provided in a connector of the stand. The head may further include a main board 19 that acquires an operating state of the head and an input voltage input to the head via the pogo pins, and determines whether an error has occurred in the pogo pins based on the operating state of the head and the input voltage.

[0294] The operating state of the head 10 is a state indicating a combination between the screen state of the display and the charging state of the battery, and the screen state can be either a screen-on state or a screen-off state, and the charging state can be either a charging-on state or a charging-off state.

[0295] The main board 19 includes a detection circuit 470 that outputs an output voltage based on the input voltage, and the main board can compare the output voltage with a reference voltage and determine whether an error has occurred in the pogo pin based on the comparison result.

[0296] The reference voltages may be set to be different depending on the operating state of the head.

[0297] When the operating state is the screen on state and the charging on state, the main board 19 determines whether the output voltage is equal to or lower than a first reference voltage, and if the output voltage is equal to or lower than the first reference voltage, determines whether the output voltage is equal to or lower than a second reference voltage that is lower than the first reference voltage, and if the output voltage is equal to or lower than the second reference voltage, determines that an error has occurred in the pogo pin.

[0298] When the operating state is the screen-on state and the charging-off state, the main board 19 determines whether the output voltage is equal to or lower than a third reference voltage, and if the output voltage is equal to or lower than the third reference voltage, it can determine that an error has occurred in the pogo pin.

[0299] The charge-off state indicates a fully charged state of the battery, and the main board 19 stores the output voltage in memory if the output voltage is equal to or lower than the third reference voltage. When the fully charged state of the battery is changed to a charge-on state, the main board determines whether the stored output voltage is equal to or lower than a threshold voltage that is lower than the third reference voltage. If the stored output voltage is equal to or lower than the threshold voltage that is lower than the third reference voltage, it can determine that an error has occurred in the pogo pin.

[0300] When the operating state is the screen off state and the charging on state, the main board 19 determines whether the output voltage is equal to or lower than a fourth reference voltage, and if the output voltage is equal to or lower than the fourth reference voltage, increases the charging current of the battery, and if the output voltage is equal to or lower than a fifth reference voltage that is lower than the fourth reference voltage, determines that an error has occurred in the pogo pin.

[0301] The detection circuit 470 may include a Zener diode 510 having a Zener voltage and a Low Dropout (LDO) circuit 530 that outputs a preset voltage when a first voltage equal to or greater than a specific voltage is input, and outputs a voltage proportional to the second voltage when a second voltage less than the specific voltage is input.

[0302] The main board 19 may include a comparator 1210 that compares the output voltage with the reference voltage, and a switch circuit 1230 that outputs a signal indicating whether an error occurs in the pogo pin based on the output value of the comparator.

[0303] The switch circuit 1230 outputs a low signal indicating that no error has occurred in the pogo pin when the output value is equal to or less than a preset value, and outputs a high signal indicating that an error has occurred in the pogo pin when the output value is greater than the preset value.

[0304] When it is determined that an error has occurred in the pogo pin, the main board 19 can display a notice on the display indicating that an error has occurred in the pogo pin.

[0305] The main board 19 can turn off the display screen and turn off battery charging if it determines that an error has occurred in the pogo pins.

[0306] If the main board 19 determines that an error has occurred in the pogo pin, it can turn off charging of the battery, turn on the display screen using the power charged in the battery, and display a guide for damage to the pogo pin or for refastening the pogo pin on the display.

[0307] The main board 19 can determine whether an error occurs in the pogo pins when the stand is electrically connected to the head through the pogo pins.

[0308] The stand 20, 30, 40, 50 includes an adapter that converts AC power into DC power, and the head further includes a charging board 13 that controls charging of the battery; The charging board may include a DC / DC converter 410 that converts the DC power transferred from the adapter into a constant voltage and supplies the converted constant voltage to the main board, a charging circuit 430 that charges the battery using the DC power transferred from the adapter, and the detection circuit 470.

[0309] According to one embodiment of the present disclosure, the above-described method may be implemented as processor-readable code on a program-recorded medium, examples of which include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

[0310] The display device described above is not limited to the configurations and methods of the embodiments described above, and the embodiments can be modified in various ways, and all or part of each embodiment can be selectively combined.

[0311] [One aspect of the present invention] The present invention proposes the following aspects of the present invention. [Claim 1] 1. A display device, comprising: stand and; a head supported by the stand and including a display and a battery; The head is electrically connected via a pogo pin provided in the connector of the stand, The head further comprises a main board; The main board is Obtaining the operating state of the head and the input voltage input to the head via the pogo pin; and A display device configured (set) to determine whether or not an error has occurred in the pogo pin based on the operating state of the head and the input voltage. [Claim 2] the operational state of the head is a state indicating a combination between a screen state of the display and a charging state of the battery, The screen state is either a screen-on state or a screen-off state, The display device of claim 1 , wherein the charging state is one of a charging-on state and a charging-off state. [Claim 3] the head further includes a detection circuit that outputs an output voltage based on the input voltage; The display device according to claim 1 , wherein the main board compares the output voltage with a reference voltage and determines whether an error occurs in the pogo pin based on a comparison result. [Claim 4] The display device according to claim 3 , wherein the reference voltages are set to be different from one another depending on the operating state of the head. [Claim 5] The main board is When the operating state is the screen-on state and the charging-on state, determining whether the output voltage is equal to or lower than a first reference voltage; If the output voltage is equal to or lower than the first reference voltage, determining whether the output voltage is equal to or lower than a second reference voltage that is lower than the first reference voltage; The display device according to claim 4 , wherein when the output voltage is equal to or lower than the second reference voltage, it is determined that an error has occurred in the pogo pin. [Claim 6] The main board is When the operating state is the screen-on state and the charging-off state, determining whether the output voltage is equal to or lower than a third reference voltage; The display device of claim 4, wherein if the output voltage is equal to or lower than the third reference voltage, it is determined that an error has occurred in the pogo pin. [Claim 7] the charge-off state indicates a fully charged state of the battery; The main board is If the output voltage is equal to or lower than the third reference voltage, storing the output voltage in a memory; When the fully charged state of the battery is changed to a charge-on state, determining whether the stored output voltage is equal to or less than a threshold voltage that is lower than a third reference voltage; The display device of claim 6, wherein it is determined that an error occurs in a pogo pin when the stored output voltage is equal to or lower than a threshold voltage that is lower than the third reference voltage. [Claim 8] The main board is When the operating state is the screen-off state and the charge-on state, determining whether the output voltage is equal to or lower than a fourth reference voltage; If the output voltage is equal to or lower than the fourth reference voltage, increasing the charging current of the battery; The display device of claim 4, wherein it is determined that an error has occurred in the pogo pin when the output voltage is equal to or lower than a fifth reference voltage that is lower than the fourth reference voltage. [Claim 9] The detection circuit a Zener diode having a Zener voltage; and 4. The display device of claim 3, further comprising: a Low Dropout (LDO) circuit that outputs a preset voltage when a first voltage equal to or greater than a specific voltage is input, and outputs a voltage proportional to the second voltage when a second voltage less than the specific voltage is input. [Claim 10] The main board is a comparator that compares the output voltage with the reference voltage; 4. The display device according to claim 3, further comprising a switch circuit that outputs a signal indicating whether an error has occurred in the pogo pin based on an output value of the comparator. [Claim 11] The switch circuit If the output value is equal to or less than a preset value, a low signal is output, indicating that no error has occurred in the pogo pin. The display device of claim 10, wherein if the output value exceeds a preset value, a high signal is output, indicating that an error has occurred in the pogo pin. [Claim 12] 2. The display device according to claim 1, wherein, when it is determined that an error has occurred in the pogo pin, the main board displays on the display a notice indicating that an error has occurred in the pogo pin. [Claim 13] The display device according to claim 1 , wherein the main board turns off the screen of the display and stops charging of the battery when it determines that an error has occurred in the pogo pin. [Claim 14] When it is determined that an error has occurred in the pogo pin, the main board: While turning off charging of the battery, turning on the screen of the display using the power charged in the battery; The display device according to claim 13, wherein a guide for repairing or refastening the pogo pins is displayed on the display. [Claim 15] The display device of claim 1 , wherein the main board determines whether an error occurs in the pogo pin when the stand is electrically coupled to the head via the pogo pin. [Claim 16] The stand includes an adapter that converts AC power into DC power; The head further includes a charging board that controls charging of the battery. The charging board is a DC / DC converter that converts the DC power transferred from the adapter into a constant voltage and supplies the converted constant voltage to the main board; a charging circuit that charges the battery using DC power transmitted from the adapter; and The display device of claim 3 , comprising the detection circuit. [Claim 17] The display device according to claim 1, wherein the head further comprises a head connector for fastening to a pogo pin provided on a connector of the stand. [Claim 18] 1. A method of operating a display device, comprising: The display device is stand and; a head supported by the stand and including a display and a battery; The head is electrically connected via a pogo pin provided in the connector of the stand, acquiring an operating state of the head and an input voltage input to the head through the pogo pin; determining whether an error has occurred in the pogo pin based on the operating state of the head and the input voltage. [Claim 19] the operational state of the head is a state indicating a combination between a screen state of the display and a charging state of the battery, The screen state is either a screen-on state or a screen-off state, 20. The method of claim 18, wherein the charging state is one of a charging-on state and a charging-off state. [Claim 20] the display device further includes a detection circuit that outputs an output voltage based on the input voltage; The operating method includes: comparing the output voltage with a reference voltage; 20. The method of claim 19, further comprising: determining whether an error has occurred in the pogo pin based on a result of the comparison.

Claims

1. 1. A display device, comprising: Stand and; a head supported by the stand and including a display and a battery; The head is electrically connected to the stand via a pogo pin provided in the connector of the stand. The head further comprises a main board; The main board is Obtaining the operating state of the head and the input voltage input to the head via the pogo pin; and A display device configured to determine whether an error has occurred in the pogo pin based on the operating state of the head and the input voltage.

2. the operational state of the head is a state indicating a combination between a screen state of the display and a charging state of the battery, the screen state is either a screen-on state or a screen-off state; The display device of claim 1 , wherein the charging state is one of a charging-on state and a charging-off state.

3. the head further includes a detection circuit that outputs an output voltage based on the input voltage; The display device of claim 1 , wherein the main board compares the output voltage with a reference voltage and determines whether an error occurs in the pogo pin based on a comparison result.

4. The display device according to claim 3 , wherein the reference voltages are set to be different from each other depending on the operating state of the head.

5. The main board is When the operating state is the screen-on state and the charging-on state, determining whether the output voltage is equal to or lower than a first reference voltage; If the output voltage is equal to or lower than the first reference voltage, determining whether the output voltage is equal to or lower than a second reference voltage that is lower than the first reference voltage; The display device of claim 4 , wherein it is determined that an error occurs in the pogo pin when the output voltage is equal to or lower than the second reference voltage.

6. The main board is When the operating state is the screen-on state and the charge-off state, determining whether the output voltage is equal to or lower than a third reference voltage; The display device of claim 4 , wherein if the output voltage is equal to or lower than the third reference voltage, it is determined that an error has occurred in the pogo pin.

7. the charge-off state indicates a fully charged state of the battery; The main board is If the output voltage is equal to or lower than the third reference voltage, storing the output voltage in a memory; When the fully charged state of the battery is changed to a charge-on state, determining whether the stored output voltage is equal to or less than a threshold voltage that is lower than a third reference voltage; The display device of claim 6, wherein it is determined that an error occurs in a pogo pin when the stored output voltage is equal to or lower than a threshold voltage that is lower than the third reference voltage.

8. The main board is When the operating state is the screen-off state and the charge-on state, determining whether the output voltage is equal to or lower than a fourth reference voltage; If the output voltage is equal to or lower than the fourth reference voltage, increasing the charging current of the battery; The display device of claim 4 , wherein it is determined that an error occurs in the pogo pin when the output voltage is equal to or lower than a fifth reference voltage that is lower than the fourth reference voltage.

9. The detection circuit a Zener diode having a Zener voltage; and 4. The display device of claim 3, further comprising: a Low Drop Out (LDO) circuit that outputs a preset voltage when a first voltage equal to or greater than a specific voltage is input, and outputs a voltage proportional to the second voltage when a second voltage less than the specific voltage is input.

10. The main board is a comparator that compares the output voltage with the reference voltage; 4. The display device according to claim 3, further comprising a switch circuit that outputs a signal indicating whether an error has occurred in the pogo pin based on an output value of the comparator.

11. The switch circuit If the output value is equal to or less than a preset value, a low signal is output, indicating that no error has occurred in the pogo pin. The display device of claim 10, wherein if the output value exceeds a preset value, a high signal is output, indicating that an error has occurred in the pogo pin.

12. The display device according to claim 1 , wherein the main board, when it is determined that an error has occurred in the pogo pin, displays a notice on the display indicating that an error has occurred in the pogo pin.

13. The display device according to claim 1 , wherein the main board turns off the screen of the display and stops charging of the battery when it is determined that an error has occurred in the pogo pin.

14. When it is determined that an error has occurred in the pogo pin, the main board: While turning off charging of the battery, turning on the screen of the display using the power charged in the battery; The display device according to claim 13, wherein a guide for damage or refastening of the pogo pins is displayed on the display.

15. The display device of claim 1 , wherein the main board determines whether an error occurs in the pogo pin when the stand is electrically coupled to the head via the pogo pin.

16. The stand includes an adapter that converts AC power into DC power; The head further includes a charging board that controls charging of the battery. The charging board is a DC / DC converter that converts the DC power transferred from the adapter into a constant voltage and supplies the converted constant voltage to the main board; a charging circuit that charges the battery using DC power transmitted from the adapter; and The display device of claim 3 , comprising the detection circuit.

17. The display device according to claim 1 , wherein the head further comprises a head connector for fastening to a pogo pin provided on a connector of the stand.

18. 1. A method of operating a display device, comprising: The display device is Stand and; a head supported by the stand and including a display and a battery; The head is electrically connected to the stand via a pogo pin provided in the connector of the stand. acquiring an operating state of the head and an input voltage input to the head through the pogo pin; determining whether an error has occurred in the pogo pin based on the operating state of the head and the input voltage.

19. the operational state of the head is a state indicating a combination between a screen state of the display and a charging state of the battery, the screen state is either a screen-on state or a screen-off state; The method of claim 18, wherein the charging state is one of a charging-on state and a charging-off state.

20. the display device further includes a detection circuit that outputs an output voltage based on the input voltage; The operating method includes: comparing the output voltage with a reference voltage; 20. The method of claim 19, further comprising: determining whether an error has occurred in the pogo pin based on a result of the comparison.

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