Display device and its operating method

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 Art

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

[0003] The stand-type display device has wheels mounted on the stand and can be easily moved and used anywhere in the house. This enables the convenient use of the display device in various spaces such as the kitchen, living room, bedroom, etc.

[0004] Also, the stand-type display device can rotate the screen by 90 degrees and can use all of the vertical and horizontal modes. This has useful advantages for photo viewing, document work, using social media, etc.

[0005] Also, the stand-type display device can adjust the height and angle of the screen and can be conveniently viewed according to the user's line of sight.

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

[0007] The burnout, contact failure, or corrosion phenomenon due to coating failure of the pogo pins are reliability items that are bound to occur.

[0008] When a pogo pin malfunctions, a voltage drop in the adapter prevents the battery from fully charging. Specifically, the voltage supplied to the battery must be above a certain level, and a faulty pogo pin prevents this from happening. As a result, the battery cannot reach a full charge, and continuous charging causes the battery's internal temperature to rise.

[0009] In conclusion, because the battery continues to charge even when a pogo pin error occurs, there is a risk of fire due to battery overheating and damage.

[0010] Furthermore, conventional methods used temperature sensors to detect errors in pogo pins by sensing the temperature around the pogo pin contacts to reduce the risk of fire. However, in areas with high ambient temperatures, there is a risk of malfunction due to the temperature rise of the temperature sensor. [Overview of the project] [Problems that the invention aims to solve]

[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 purpose of this disclosure may be to predict the connection state based on the operating state of the head and the charge state of the battery when connecting a power supply using pogo pins.

[0013] The purpose of this disclosure may be to accurately measure the occurrence of a pogo pin error by performing a two-stage verification of whether or not a pogo pin error occurred, depending on each operating state of the head. [Means for solving the problem]

[0014] A display apparatus according to an embodiment of the present disclosure includes a stand, a head supported by the stand and comprising a display and a battery, and the head being electrically fastened via pogo pins provided on a connector of the stand, The head may further include (have; configure; build; set up; include; contain; contain; have) a main board that acquires the operating state of the head and the input voltage input to the head via the pogo pins, and determines whether or not an error has occurred in the pogo pins based on the operating state of the head and the input voltage.

[0015] A method for operating a display device according to an embodiment of the present disclosure, which includes a stand and a head supported by the stand and comprising a display and a battery, the head being electrically fastened via pogo pins provided on a connector of the stand, may include the steps of determining the operating state of the head, obtaining an input voltage input to the head via the pogo pins, and determining whether or not 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 embodiments of this disclosure, damage to the pogo pins for the electrical connection between the head and the stand can be detected, thereby preventing the potential for a fire to occur.

[0017] According to embodiments of this 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, and the user can be notified accordingly to maintain the power-off state of the display device and prevent fire and overheating due to battery charging.

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

[0019] [Figure 1A-1B] This figure illustrates the structure of a display device according to an embodiment of the present disclosure. [Figure 2]It is a diagram showing the configuration of a display device according to an embodiment of the present disclosure in a block diagram. [Figure 3A-3B] It is a diagram for explaining the structure of a display device according to an embodiment of the present disclosure from the viewpoint of power supply. [Figure 4] It is a diagram for explaining the configuration of a charging board according to an embodiment of the present disclosure. [Figure 5] It is a diagram for explaining the circuit diagram of a detection circuit according to an embodiment of the present disclosure. [Figure 6] FIG. 6 is a diagram for explaining the operating principle of an LDO circuit according to an embodiment of the present disclosure. [Figure 7-10] It is a diagram for explaining the process of determining the presence or absence of a pogo pin error 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] It is a diagram schematically showing an error verification method of a pogo pin according to each operating state of a head according to the present disclosure. [Figure 12] It is a diagram for explaining a control circuit according to an embodiment of the present disclosure. [Figure 13] It is a diagram for explaining the reason for increasing the power consumed by the head when the operating state of the head is the third operating state according to an embodiment of the present disclosure. [Figure 14] It is a flowchart for explaining an operation method of a display device according to still another embodiment of the present disclosure.

Embodiments for Carrying Out the Invention

[0020] Hereinafter, embodiments according to the present invention will be described in more detail with reference to the drawings. The suffixes "module" and "section" of the constituent elements used in the following description are given or mixed only for the ease of preparing the specification, and do not have a meaning or role that distinguishes them from each other by themselves.

[0021] The direction indicators of up U, down D, left Le, right Ri, front F, and back R shown in the drawings are for convenience of explanation only, and the technical idea disclosed in this specification is not limited thereby.

[0022] An embodiment of the present invention, for example, is an intelligent display device that adds computer-aided functions to a broadcast reception function. While remaining faithful to the broadcast reception function, it can also have added functions such as internet access and be equipped with a more convenient interface such as a handwriting input device, a touchscreen, or a spatial remote control. Furthermore, it can connect to the internet and a computer through wired or wireless internet support, and can perform functions such as email, web browsing, banking, or games. A standardized general-purpose OS can 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 allowing various applications to be freely added or removed on a general-purpose OS kernel. More specifically, the display device can be a network TV, HBB TV, smart TV, LED TV, OLED TV, etc., and may also be applicable to a smartphone.

[0024] Figures 1A and 1B illustrate the structure of a display device according to an embodiment of this disclosure.

[0025] Referring to Figures 1A and 1B, the display device 1 may include a head 10. The head 10 may include a display panel for displaying images.

[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] On the other hand, for the sake of explanation, the lengths of the first and second long sides LS1 and LS2 are shown and explained as being even longer than the lengths of the first and second short sides SS1 and SS2, but the lengths of the first and second long sides LS1 and LS2 are the same as the lengths of the first and second short sides SS1 and SS2 It is also possible to make cases that are almost identical.

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

[0029] The direction in which the head 10 displays the 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 can be referred to as the left side (Le, x). The second short side SS2 can be referred to as the right side Ri. The first long side LS1 can be referred to as the upper side U, y. The second long side LS2 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 can be called the edges of 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 can be called 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, and 50 that support the head 10.

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

[0033] Stands 20, 30, 40, and 50 can be detachably attached to head 10.

[0034] The base 20 is placed on the ground. The base 20 may be round or square in shape. Multiple wheels 20W can be mounted on the underside of the base 20.

[0035] The plug CWa, which connects to the power cable CW, can be connected to a concentric plug that supplies external power.

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

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

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

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

[0040] The head 10 may be supported by stands 20, 30, 40, and 50, and may be spaced upward from 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 of the following directions: up, down, left, or right.

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

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

[0044] Referring to Figure 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, external device interface 135, memory 140, user input interface 150, controller 170, wireless communication interface 173, display 180, speaker 185, and power supply circuit 190 may each be provided on the head 10. However, it is not limited to this, and some components may also be provided on 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 select a specific broadcast channel in accordance with a channel selection command. The tuner 131 can receive the broadcast signal of the selected specific broadcast channel.

[0048] The demodulator 132 can separate the received broadcast signal into a video signal, an audio signal, and data signals related to the broadcast program, and can restore the separated video signal, audio signal, and data signals into an output-ready format.

[0049] The external device interface 135 can receive applications or lists of applications in adjacent external devices and transmit them to the controller 170 or memory 140.

[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 the video and audio output from an external device connected to the display device 1 wirelessly or via a wired connection and transmit them to the controller 170.

[0051] The external device interface 135 may include multiple external input terminals. These multiple external input terminals may include RGB terminals, one or more HDMI (High Definition Multimedia Interface®) terminals, and component terminals.

[0052] Video signals from an external device input via the external device interface 135 can be output via the display 180. Audio signals from an external device input via the external device interface 135 can be output via the speaker 185.

[0053] External devices that can be connected to the external device interface 135 may include, but are not limited to, any one of the following: a set-top box, a Blu-ray player (registered trademark; hereinafter the same), a DVD player, a game console, a soundbar, a smartphone, a PC, a USB memory stick, or a home theater system.

[0054] The external device interface 135 may be provided on one or more of the head 10 or the stands 20, 30, 40, or 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 with 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 of the content data stored in the display device 1 to other users or other electronic devices that have been pre-registered with the display device 1, or to selected users or selected electronic devices.

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

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

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

[0061] The network interface 133 can select and receive desired applications from among those publicly available (open) via the network.

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

[0063] The memory 140 can perform functions for the temporary storage of video, audio, or data signals input from the external device interface 135 or the network interface 133, and can store information about a given image via the channel storage function.

[0064] Memory 140 can store applications or lists of applications that are input from the external device interface 135 or the network interface 133.

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

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

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

[0068] The video signal processed by the controller 170 is input to the display 180 and can be displayed as the corresponding video signal. The video signal processed by the controller 170 can also 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 to the 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 by user commands or internal programs entered via the user input interface 150, and can connect to a network to download applications or lists of applications desired by the user into the display device 1.

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

[0073] The controller 170, in accordance with an external device video playback command received via the user input interface 150, enables video signals or audio signals 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 speaker 185.

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

[0075] The controller 170 can control the display device 1 to play content stored within it, received broadcast content, or external input content received from an external source. This content can take various forms, such as broadcast video, external input video, audio files, still images, connected web pages, or document files.

[0076] The wireless communication interface 173 can communicate with external devices via wired or wireless connection. The wireless communication interface 173 can perform short-range communication with external devices. For this purpose, the wireless communication interface 173 uses Bluetooth. TM Short-range communication can be supported using at least one of the following technologies: RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, or Wireless USB (Wireless Universal Serial Bus).

[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 other display devices 1, or between the display device 1 and the network where the display device (100, or external server) is located, via a Wireless Area Network. The Wireless Area Network may be a Wireless Personal Area Network.

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

[0079] If the sensed wearable device is 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. Therefore, the user of the wearable device can access the data processed by the display device 1 through the wearable device.

[0080] The display 180 can generate drive signals by converting video signals, data signals, OSD signals processed by the controller 170, or video signals and data signals received by the external device interface 135, into R, G, and B signals, respectively.

[0081] On the other hand, since the display device 1 shown in Figure 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 that will actually be implemented.

[0082] In other words, two or more components may be combined into one component, or one component may be subdivided into two or more components, as needed. The functions performed by each block are for illustrative purposes only, and their specific operation or apparatus does not limit the scope of the present invention.

[0083] According to yet another embodiment of the present invention, the display device 1 may receive and play video via a network interface 133 or an external device interface 135 without comprising a tuner 131 and a demodulator 132, as shown in Figure 2.

[0084] For example, the display device 1 may be implemented 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 the content input from the video processing device.

[0085] In this case, the operation 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 Figure 2, but also by any one of the following: an image processing device such as the separated set-top box or a content playback device equipped with a display 180 and a speaker 185.

[0086] Figures 3A and 3B illustrate the structure of a display device according to an embodiment of this disclosure from the perspective of power supply.

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

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

[0089] Stands 20, 30, 40, and 50 can be detachably attached to head 10.

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

[0091] The powerboard 21 may include an adapter that can convert AC power to DC power.

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

[0093] In Figure 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 which includes one or more contact terminals that make contact with one or more pogo pins 41, 43. The head connector 11 may 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 driver circuit 17, a main board 19, and a display 180.

[0096] The head connector 11 may include one or more contact terminals for electrically contacting one or more pogo pins 41, 43. The head connector 11 can provide the charging board 13 with a DC power supply from one or more pogo pins 41, 43 via 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 supply a DC power source from the power board 21 to the components of the head 10.

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

[0099] The battery 15 can supply DC power to one or more of the backlight driver circuits 17 or the main board 19.

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

[0101] The battery 15 can supply DC power to the head 10 via discharge when the power board 21 or the adapter provided on the power board 21 is disconnected from the head 10.

[0102] The backlight driving circuit 17 may be a circuit for driving the 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 can control the light output of the backlight based on a dimming value.

[0103] The mainboard 19 can control the overall operation of the head 10. The mainboard 19 may have one or more processors. Each of the one or more processors may consist of one 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 of the head 10, which is input to the charging board 13 via pogo pins 41 and 43.

[0106] The main board 19 can determine whether or not 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] The main board 19 can control the charging of the battery 15 to stop if it determines that an error has occurred on pogo pins 41 and 43 (S707).

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

[0109] Figure 3B illustrates an example where one or more pogo pins 41 and 43 are represented by an equivalent circuit, and one or more pogo pins 41 and 43 are represented by a resistor of 300.

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

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

[0112] The charging board 13 may include a 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 20V DC voltage to 13V, and then supply the stepped-down 13V DC voltage to the main board 19.

[0115] The charging circuit 430 can charge the battery 15 using a DC power supply transmitted from the power board 21. The charging circuit 430 can control the charging or discharging of the battery 15. The charging circuit 430 may 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 the charge ON signal received from the main board 19, and can interrupt the charging of the battery 15 according to the charge OFF signal.

[0117] The boost circuit 450 can change the output voltage of the battery 15 to a pre-set 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 the pre-set voltage and output the increased voltage.

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

[0119] The detection circuit 470 can detect the fastening status of pogo pins 41 and 43 using the DC power output from pogo pins 41 and 43. The detection circuit 470 can detect whether or not there is an error in pogo pins 41 and 43 using the DC power output from pogo pins 41 and 43, which is 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 LDO (Low Dropout) circuits.

[0122] This figure illustrates a circuit diagram of a detection circuit according to one embodiment of the present disclosure.

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

[0124] The cathode terminal of the Zener diode 510 can be supplied with the input voltage from the charging board 13 via pogo pins 41 and 43. One end of resistor R246 can be connected to the anode terminal of the Zener diode 510.

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

[0126] A 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 a Zener diode 510 may be 15.5V.

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

[0128] The LDO circuit 530 may be a circuit that outputs a pre-set voltage when the input voltage is above a specific voltage. The LDO circuit 530 can output 3.3V when the input voltage is 3.5V or higher, and can reduce the output voltage according to the input voltage when the input voltage is less than 3.5V. The LDO circuit 530 can linearly reduce the output voltage according to the input voltage when the input voltage is less than 3.5V.

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

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

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

[0132] The LDO circuit 530 can output a constant voltage of 3.3V when the input voltage is 3.5V or higher. When the input voltage is less than 3.5V, 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 can also be reduced proportionally to the input voltage, as shown in Graph 600.

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

[0135] When an 18V DC voltage is applied to the detection circuit 470, a 2.5V DC voltage L can be applied to the LDO circuit 530 by the Zener diode 510, which has a Zener voltage of 15.5V. Since the input voltage to the LDO circuit 530 is less than 3.5V, it can output 1.7V according to 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 faulty connection between the pogo pins 41 and 43 based on the output voltage of the detection circuit 470.

[0138] The main board 19 can determine whether there are any faulty connections between the pogo pins 41 and 43 based on the operating status 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 states, including the display 180 being on, the display 180 being off, the battery 15 being charged on, or the battery 15 being charged off.

[0140] The screen-off state can be either a state in which no power is supplied to the display 180 at all, or a standby state in which only minimal power is supplied to the display 180.

[0141] In the following, the fully charged state of battery 15 can be described as the state in which battery 15 is completely charged.

[0142] Figures 7 to 10 illustrate the process of determining whether or not a pogo pin error has occurred based on the operating state of the head and the charge state of the battery according to the embodiment of this disclosure.

[0143] Figure 7 is a flowchart illustrating the operation method of a display device according to one embodiment of this disclosure.

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

[0145] In one embodiment, the operating state of the head 10 may be a state that represents a combination between the screen state of the display 180 and the charging state of the battery 15.

[0146] The screen state of display 180 can be either the screen off state or the screen on state.

[0147] The charge state of battery 15 can be either the charge-on state, where battery 15 is being charged, or the charge-off state, where battery 15 is not being charged. In the fully charged state of battery 15, battery 15 may not be charged. Accordingly, the fully charged state of battery 15 may be treated the same as the charge-off state.

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

[0149] The first operating state of the head 10 may be the display 180 screen being turned on and the battery 15 being charged.

[0150] The second operating state of the head 10 can be either the screen on state or the battery 15 off state.

[0151] The third operating state of the head 10 can be the screen off state or the battery 15 charging on state.

[0152] The fourth operating state of the head 10 can be the screen off state or the battery 15 being turned off.

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

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

[0155] The main board 19 of the display device 100 can determine whether or not 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 (S705).

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

[0157] In one embodiment, the main board 19 can perform a primary verification based on the acquired operating state of the head 10 and the input voltage of the charging board 13, and can determine whether or not there are errors in the pogo pins 41 and 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 a primary verification based on the acquired operating state of the head 10 and the input voltage of the charging board 13, and can determine whether or not there are errors in the pogo pins 41 and 43 based on the verification results of the secondary verification.

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

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

[0161] The main board 19 of the display device 100 can control the charging of the battery 15 to be turned off if it determines that an error has occurred on the pogo pins 41 and 43 (S707) (S709).

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

[0163] This allows the battery 15 to be continuously charged, preventing the risk of overheating and fire that could occur with the battery 15.

[0164] If the main board 19 determines that an error has occurred in the pogo pins 41 and 43, it may display a notification on the display 180 indicating that an error has occurred in the pogo pins 41 and 43. The notification may include text and images indicating that one or more of the following problems have occurred: improper fastening of the pogo pins 41 and 43 or damage to the pogo pins 41 and 43.

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

[0166] With the display 180 screen off and the battery 15 not charging, the power consumption of the head 10 is less than 0.5W, so the possibility of ignition by the pogo pins 41 and 43 can be eliminated.

[0167] The main board 19 can use the power supplied by the battery 15 to display on the display 180 a guide for checking for damage to or re-tightening the pogo pins 41 and 43.

[0168] If the main board 19 determines that an error has occurred at pogo pins 41 and 43, it can turn off charging the battery 15, discharge the battery 15, and turn on the screen of the display 180. The main board 190 can display a notification on the on-screen indicating that an error has occurred at pogo pins 41 and 43.

[0169] Users can immediately check and address the status of pogo pins 41 and 43 through notifications displayed on the screen.

[0170] In yet another embodiment, if the main board 19 determines that an error has occurred in the pogo pins 41 and 43, it may display a notification on the display 180 indicating that an error has occurred in the pogo pins 41 and 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 use the charging power of the battery 15 to turn on the screen of the display 180, and can display a guide on the turned-on screen for checking the fastening status of the pogo pins 41 and 43 and for re-fastening them.

[0172] Figure 8 may be a flowchart illustrating the process of determining whether or not errors have occurred in the pogo pins 41 and 43 when the display 180 is on and the battery 15 is charging, which are the first operating states of the head 10.

[0173] In particular, Figure 8 may represent a process for determining whether or not errors have occurred in pogo pins 41 and 43 through a two-stage verification.

[0174] Figure 8 may be an embodiment that embodies steps S705 and S707, which are performed after step S703 in Figure 7.

[0175] Referring to Figure 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 for the input voltage via the Zener diode 510 and the 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 below the first reference voltage (S803).

[0179] The first reference voltage may be 1.8V when the display 180 screen is on and the battery 15 is charging, but this is only an example. The first reference voltage may be a voltage that has been pre-measured and set by experimentation for error conditions of the pogo pins 41 and 43.

[0180] The process by which the main board 19 determines whether the output voltage of the detection circuit 470 is below the first reference voltage can be called the primary verification process.

[0181] If the main board 19 determines that the output voltage of the detection circuit 470 is less than the first reference voltage, it can determine whether the output voltage of the detection circuit 470 is less than the second reference voltage, which is less 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 has been pre-measured and set by experiment for error conditions of pogo pins 41, 43.

[0183] The process by which the main board 19 determines whether the output voltage of the detection circuit 470 is below the second reference voltage can be referred to as the secondary verification process.

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

[0185] The main board 19 can determine that an error has occurred at pogo pins 41 and 43 if it determines that the output voltage of the detection circuit 470 is lower than the second reference voltage (S807).

[0186] The main board 19 can control the charging board 13 to turn off charging of the battery 15 if it determines that an error has occurred on pogo pins 41 and 43.

[0187] Figure 9 may be a flowchart illustrating the process of determining whether or not an error has occurred in the pogo pins 41 and 43 when the head 10 is in its second operating state, which is when the display 180 is on and the battery 15 is off charge (or fully charged).

[0188] Figure 9 may represent the process of determining whether or not errors have occurred in pogo pins 41 and 43 through verification in stage 1.

[0189] Figure 9 may be an embodiment illustrating steps S705 and S707, which are performed after step S703 in Figure 7.

[0190] Referring to Figure 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 for the input voltage via the Zener diode 510 and the 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 below the third reference voltage (S903).

[0194] With the display 180 screen on and the battery 15 off, the third reference voltage may be 3.0V, but this is merely an example. The third reference voltage may be a voltage that has been pre-measured and set by experimentation for error conditions of the pogo pins 41 and 43.

[0195] The process by which the main board 19 determines whether the output voltage of the detection circuit 470 is below the third reference voltage can be referred to as the primary verification process.

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

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

[0198] The main board 19 can, after a certain period of time, turn off the screen of display 180 for system stability or to put the system into standby mode.

[0199] With the display 180 screen off and the battery 15 not charging, the power consumption of the head 10 is less than 0.5W, so the possibility of ignition by the pogo pins 41 and 43 can be eliminated.

[0200] The main board 19 can use the power supplied by the battery 15 to display on the display 180 a guide for checking for damage to or re-tightening the pogo pins 41 and 43.

[0201] The reason for performing only a preliminary test when battery 15 is either off or fully charged is that the probability of battery 15 overheating is significantly low because it is not in a situation where it is being charged.

[0202] If the main board 19 detects an error at pogo pins 41 and 43 during a primary verification while the display 180 is off 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 battery 15's charge state changes from fully charged to charging-on, the main board 19 can perform a secondary verification by comparing the recorded output voltage with a threshold voltage smaller than the third reference voltage. The threshold voltage smaller than the third reference voltage may be 2.9V.

[0204] Figure 10 may be a flowchart illustrating the process of determining whether or not errors occur in the pogo pins 41 and 43 when the display 180 is off and the battery 15 is charging, which are the third operating states of the head 10.

[0205] In particular, Figure 10 may represent a process for determining whether or not errors have occurred in pogo pins 41 and 43 through a two-stage verification.

[0206] Figure 10 may be an embodiment illustrating steps S705 and S707, which are performed after step S703 in Figure 7.

[0207] Referring to Figure 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 for the input voltage via the Zener diode 510 and the LDO circuit 530.

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

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

[0211] With the display 180 screen off and the battery 15 charging on, the fourth reference voltage may be 2.6V, but this is only an example. The fourth reference voltage may be a voltage that has been pre-measured and set by experimentation for error conditions of the pogo pins 41 and 43.

[0212] The process by which the main board 19 determines whether the output voltage of the detection circuit 470 is below the fourth reference voltage can be referred to as the primary verification process.

[0213] The main board 19 can control the charging board 13 so that the charging current of the battery 15 increases when the output voltage of the detection circuit 470 is below the fourth reference voltage (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 to increase the power consumed by the head 10 in the third operating state to the same amount as the power consumed in the first operating state, and to increase the change in the output voltage of the detection circuit 470. When the change in the output voltage of the detection circuit 470 is increased, it becomes possible to more accurately distinguish whether or not the pogo pins 41 and 43 are properly connected. This will be explained later.

[0215] Subsequently, the main board 19 can determine whether the output voltage of the detection circuit 470 is less than the fifth reference voltage, which is less than the fourth reference voltage (S1007).

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

[0217] The process by which the main board 19 determines whether the output voltage of the detection circuit 470 is below the fifth reference voltage can be referred to as the secondary verification process.

[0218] The main board 19 can perform a secondary verification process to determine whether or not the lower output voltage of the detection circuit 470 is due to noise.

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

[0220] The main board 19 can control the charging board 13 to turn off charging of the battery 15 if it determines that an error has occurred at pogo pins 41 and 43. The main board 19 can then use the charging power of the battery 15 to power the display 180. The display 180 can display a notification indicating that an error has occurred at pogo pins 41 and 43 via the power supplied from the battery 15.

[0221] Figure 11 shows the method for verifying pogo pin errors according to each operating state of the head according to this disclosure. This is a diagrammatic representation.

[0222] First, the power consumption structure of the display device 1 according to the embodiment of this disclosure will be described. However, the numerical values ​​of the power consumption structure are for illustrative purposes only.

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

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

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

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

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

[0228] In the following, we will assume that the adapter provided on the power board 21 outputs a 20V DC voltage.

[0229] First, we will describe the first operating state of the head 10, which is the state in which the display 180 is turned on and the battery 15 is charging.

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

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

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

[0233] The main board 19 can determine that, in the first operating state, if the output voltage of the detection circuit 470 is 1.8V or higher and 3.3V or lower, then no errors will occur at pogo pins 41 and 43. This is to prevent the power to the display device 1 from being indiscriminately turned off, which would disrupt the stability of the system.

[0234] The main board 19 can perform a secondary verification to determine whether the output voltage of the detection circuit 470 is lower than the first reference voltage (1.8V) or if it is due to a temporary effect of 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, we will describe the second operating state of the head 10, in which the display 180 is turned on and the battery 15 is either off or fully charged.

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

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

[0239] The main board 19 can determine that, in the second operating state, if the output voltage of the detection circuit 470 is 3.0V or higher and 3.3V or lower, no errors will occur at pogo pins 41 and 43. This is to prevent the system from being unstable by indiscriminately turning off the power to the display device 1.

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

[0241] On the main board 19, even if the output voltage of the detection circuit 470 is lower than the third reference voltage of 3.0V, secondary verification may not be performed because the battery 15 is either off or fully charged.

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

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

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

[0245] The main board 19 can determine that, in the third operating state, if the output voltage of the detection circuit 470 is 2.6V or higher and 3.3V or lower, no errors will occur at pogo pins 41 and 43. This is to prevent the system from being unstable by indiscriminately turning off the power to the display device 1.

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

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

[0248] Next, we will describe the fourth operating state of the head 10, which is the state in which the display 180 screen is off and the battery 15 is not charging.

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

[0250] If pogo pins 41 and 43 are abnormally connected to the head connector 11, the resistance of pogo pins 41 and 43 is measured as 1 ohm, the input voltage 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 the primary verification process of determining 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 head 10 is minimal, thus reducing the risk of fire.

[0253] Thus, in the embodiments of this disclosure, one-stage or two-stage verification can be performed to determine whether or not an error has occurred in the pogo pins 41 and 43 depending on the operating state of the head 10. In particular, the presence or absence of an error in the pogo pins 41 and 43 can be measured more accurately through two-stage verification.

[0254] Furthermore, the main board 19 can set the reference voltage used during the execution of the primary and secondary verifications to differ 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 pogo pins 41 and 43. The main board 19 can perform a primary verification according to the operating state of the head 10 when the output voltage of the detection circuit 470 is above a certain voltage. Here, the certain voltage may be 0.7V, but this is merely an example.

[0256] Figure 12 is a diagram illustrating a control circuit according to one 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 multiple resistors R1, R2, R3 and an amplifier IOP1. If the pogo pins 41 and 43 are properly connected, the reference voltage output by the detection circuit 470 can be applied to the - terminal of the amplifier IOP1, and the output voltage output by the detection circuit 470, as actually measured, can be applied to the + terminal.

[0260] The main board 19 can store reference voltages corresponding to each of the multiple operating states of the head 10. For this purpose, the main board 19 may include memory (not shown). Memory (not shown) may also be provided separately.

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

[0262] The main board 19 may store a 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. The comparator 1210 can transmit the amplified error value (output value) to the switch circuit 1230.

[0264] The switch circuit 1230 can output signals indicating whether or not an error has occurred at pogo pins 41 and 43 based on the amplified error value.

[0265] The switch circuit 1230 may include multiple resistors R4, R5, R6 and a switch T1. Switch T1 may be an NPN transistor.

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

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

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

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

[0270] Figure 13 illustrates the reason why the power consumed by the head increases when the head is in a third operating state according to an embodiment of the present disclosure.

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

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

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

[0274] This allows for a lower accuracy in detecting faulty fastening of pogo pins 41 and 43.

[0275] In the embodiments of this disclosure, the main board 19 can increase the power consumption consumed in the third operating state of the head 10 by the amount of power consumption consumed in the first operating state.

[0276] For this purpose, 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 for accurate verification of any improper fastening of the pogo pins 41 and 43 in the third operating state of the head 10.

[0279] Figure 14 is a flowchart illustrating the operation method of a display device according to yet another embodiment of this disclosure.

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

[0281] The power-on signal may be a signal to turn on the power to 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 obtain values ​​for several parameters, including information about the display device 1, via the System On Chip (SOC) (S1403).

[0283] 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 through 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 several 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 on the display 180 in that screen mode, the backlight drive 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 and 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 by using the comparator 1210 of the control circuit 1200 (S1407).

[0288] The main board 19 can obtain a reference voltage that serves as a basis for determining the operating state of the head 10 and the presence or absence of errors in the pogo pins 41 and 43 based on the power consumption of the head 10 and the charging power of the battery 15.

[0289] The reference voltage can vary in value 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). When the comparator 1210 outputs a high signal, a notification indicating that an error has occurred in the pogo pins 41 and 43 can be displayed on the display 180 (S1411).

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

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

[0293] A display device 1 according to an embodiment of the present disclosure includes stands 20, 30, 40, 50 and a head 10 supported by the stands, comprising a display 180 and a battery 15, the head being electrically connected via pogo pins 41, 43 provided on connectors of the stands. The head may further include a main board 19 that acquires the operating state of the head and the input voltage input to the head via the pogo pins, and determines whether or not 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 that represents a combination between the screen state of the display and the charging state of the battery, wherein the screen state is either the screen on state or the screen off state, and the charging state can be either the charging on state or the 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 or not an error has occurred in the pogo pin based on the comparison result.

[0296] The reference voltages can be set to be different from each other depending on the operating state of the head.

[0297] The main board 19 can determine if the output voltage is less than or equal to a first reference voltage when the operating state is the screen on state and the charging on state, and if the output voltage is less than or equal to the first reference voltage, it can determine whether the output voltage is less than or equal to a second reference voltage which is smaller than the first reference voltage, and if the output voltage is less than or equal to the second reference voltage, it can determine that an error has occurred at the pogo pin.

[0298] The main board 19 can determine whether the output voltage is below the third reference voltage when the operating state is the screen on state or the charging off state, and if the output voltage is below the third reference voltage, it can determine that an error has occurred at the pogo pin.

[0299] The charging-off state indicates that the battery is fully charged. The main board 19 stores the output voltage in memory when the output voltage is less than or equal to the third reference voltage. When the fully charged state of the battery changes to the charging-on state, the main board 19 determines whether the stored output voltage is less than or equal to a threshold voltage smaller than the third reference voltage. If the stored output voltage is less than or equal to a threshold voltage smaller than the third reference voltage, the main board 19 can determine that an error has occurred at the pogo pin.

[0300] The main board 19 can determine if the output voltage is below the fourth reference voltage when the operating state is the screen off state or the charging on state, and if the output voltage is below the fourth reference voltage, it can increase the charging current of the battery, and if the output voltage is below the fifth reference voltage which is lower than the fourth reference voltage, it can determine that an error has occurred at 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 pre-set voltage when a first voltage of a specific voltage or higher is input, and outputs a voltage proportional to the second voltage when a second voltage of 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 or not an error has occurred in the pogo pin based on the output value of the comparator.

[0303] The switch circuit 1230 can output a low signal indicating that no error has occurred at the pogo pin when the output value is less than or equal to a previously set value, and can output a high signal indicating that an error has occurred at the pogo pin when the output value exceeds a previously set value.

[0304] If the main board 19 determines that an error has occurred in the pogo pin, it can display a notification 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 stop charging the battery 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 the battery charge, use the power stored in the battery to turn on the display screen, and display a guide on the display for repairing or re-tightening the pogo pin.

[0307] The main board 19 can determine whether or not an error has occurred in the pogo pins when the stand is electrically connected to the head via the pogo pins.

[0308] The stands 20, 30, 40, and 50 include adapters that convert AC power to DC power, and the head further includes a charging board 13 that controls the charging of the battery. The charging board may include a DC / DC converter 410 that converts the DC power transmitted 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 transmitted from the adapter, and a detection circuit 470.

[0309] According to an embodiment of the present disclosure, the above-described method can be realized as processor-readable code on a medium on which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

[0310] As described above, the display device described is not limited to the configurations and methods of the described embodiments, and each embodiment can be variously modified. It is also possible that all or part of each embodiment is selectively combined and configured.

[0311] [One aspect of the present invention] The present invention proposes the following aspects of the present invention. [Claim 1] A display device, comprising: a stand; and a head supported by the stand and including a display and a battery; the head is electrically fastened via a pogo pin provided in a connector of the stand, the head further includes a main board, the main board is configured to: acquire an operating state of the head and an input voltage input to the head via the pogo pin, and determine whether an error has occurred (whether it has occurred) in the pogo pin based on the operating state of the head and the input voltage. [Claim 2] The operating 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 one of a screen-on state or a screen-off state, the charging state is either one of a charge-on state or a charge-off state. The display device according to claim 1. [Claim 3] The head further comprises 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 or not an error has occurred in the pogo pin based on the comparison result. [Claim 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. [Claim 5] The aforementioned main board is When the operating state is the screen-on state and the charging-on state, it is determined whether the output voltage is less than or equal to the first reference voltage. If the output voltage is less than or equal to the first reference voltage, it is determined whether the output voltage is less than or equal to a second reference voltage which is smaller than the first reference voltage. The display device according to claim 4, wherein it is determined that an error has occurred in the pogo pin when the output voltage is less than or equal to the second reference voltage. [Claim 6] The aforementioned main board is When the operating state is the screen-on state and the charging-off state, it is determined whether the output voltage is less than or equal to the third reference voltage. The display device according to claim 4, wherein it is determined that an error has occurred in the pogo pin when the output voltage is less than or equal to the third reference voltage. [Claim 7] The aforementioned charging off state indicates that the battery is fully charged. The aforementioned main board is If the output voltage is less than or equal to the third reference voltage, the output voltage is stored in memory. When the fully charged state of the battery is changed to the charging-on state, it is determined whether the stored output voltage is below a threshold voltage that is less than the third reference voltage. The display device according to claim 6, wherein it is determined that an error has occurred in the pogo pin if the stored output voltage is less than or equal to a threshold voltage that is less than the third reference voltage. [Claim 8] The aforementioned main board is When the operating state is the screen off state and the charging on state, it is determined whether the output voltage is below the fourth reference voltage. If the output voltage is less than or equal to the fourth reference voltage, the charging current of the battery is increased. The display device according to claim 4, wherein it is determined that an error has occurred in the pogo pin when the output voltage is less than or equal to the fifth reference voltage, which is less than the fourth reference voltage. [Claim 9] The detection circuit is A Zener diode having a Zener voltage, and The display device according to claim 3, comprising a Low DropOut (LDO) circuit that outputs a pre-set voltage when a first voltage above a specified voltage is input, and outputs a voltage proportional to the second voltage when a second voltage below the specified voltage is input. [Claim 10] The aforementioned main board is A comparator that compares the output voltage with the reference voltage, The display device according to claim 3, further comprising a switch circuit that outputs a signal indicating whether or not an error has occurred in the pogo pin based on the output value of the comparator. [Claim 11] The aforementioned switch circuit is If the output value is less than or equal to a previously set value, a low signal is output to the pogo pin indicating that no error has occurred. The display device according to claim 10, wherein if the output value exceeds a previously set value, a high signal is output to the pogo pin indicating that an error has occurred. [Claim 12] The display device according to claim 1, wherein the main board determines that an error has occurred in the pogo pin, and displays a notification on the display indicating that an error has occurred in the pogo pin. [Claim 13] The display device according to claim 1, wherein the main board determines that an error has occurred in the pogo pins, and turns off the display screen and stops charging the battery. [Claim 14] If the main board determines that an error has occurred in the pogo pin, While turning off the charging of the aforementioned battery, the power stored in the aforementioned battery is used to turn on the screen of the aforementioned display. The display device according to claim 13, wherein a guide for damaging or re-fastening the pogo pin is displayed on the display. [Claim 15] The display device according to claim 1, wherein the main board determines whether an error has occurred in the pogo pins when the stand is electrically fastened to the head via the pogo pins. [Claim 16] The aforementioned stand is equipped with an adapter that converts AC power to DC power, The head further comprises a charging board that controls the charging of the battery, The aforementioned charging board is A DC / DC converter that converts the DC power transmitted 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 a DC power supply transmitted from the adapter, and The display device according to 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 the connector of the stand. [Claim 18] A method for operating a display device, The aforementioned display device is Stand and; alongside The device comprises a head supported by the aforementioned stand and equipped with a display and a battery; The head is electrically fastened via a pogo pin provided on the connector of the stand. The steps include obtaining the operating state of the head and the input voltage input to the head via the pogo pins, A method for operating a display device, comprising the step of determining whether or not an error has occurred in the pogo pin based on the operating state of the head and the input voltage. [Claim 19] The operating state of the head is a state that represents a combination of the screen state of the display and the charge state of the battery. The aforementioned screen state is either the screen on state or the screen off state. The method for operating a display device according to claim 18, wherein the charging state is either a charging-on state or a charging-off state. [Claim 20] The display device further comprises a detection circuit that outputs an output voltage based on the input voltage, The aforementioned operation method is, The steps include comparing the output voltage with the reference voltage, A method for operating a display device according to claim 19, further comprising the step of determining whether or not an error has occurred in the pogo pin based on the comparison result.

Claims

1. A display device, Battery and; Stand and; alongside A head supported by the aforementioned stand and equipped with a display; The head is electrically fastened via a pogo pin provided on the connector of the stand. The aforementioned head further comprises a main board, The aforementioned main board is The operating state of the head and the input voltage input to the head via the pogo pin are obtained, and The system is configured 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. The operating state of the head is a state that represents a combination of the screen state of the display and the charge state of the battery. The aforementioned screen state is either the screen on state or the screen off state. The aforementioned charging state is either the charging on state or the charging off state, in this display device.

2. The head further comprises 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 or not an error has occurred in the pogo pin based on the comparison result.

3. The display device according to claim 2, wherein the reference voltages are set to be different from each other according to the operating state of the head.

4. The aforementioned main board is When the operating state is the screen-on state and the charging-on state, it is determined whether the output voltage is less than or equal to the first reference voltage. If the output voltage is less than or equal to the first reference voltage, it is determined whether the output voltage is less than or equal to a second reference voltage which is smaller than the first reference voltage. The display device according to claim 3, wherein it is determined that an error has occurred in the pogo pin when the output voltage is less than or equal to the second reference voltage.

5. The aforementioned main board is When the operating state is the screen-on state and the charging-off state, it is determined whether the output voltage is less than or equal to the third reference voltage. The display device according to claim 3, wherein it is determined that an error has occurred in the pogo pin when the output voltage is less than or equal to the third reference voltage.

6. The aforementioned charging off state indicates that the battery is fully charged. The aforementioned main board is If the output voltage is less than or equal to the third reference voltage, the output voltage is stored in memory. When the fully charged state of the battery is changed to the charging-on state, it is determined whether the stored output voltage is below a threshold voltage that is less than the third reference voltage. The display device according to claim 5, wherein if the stored output voltage is less than or equal to a threshold voltage that is less than the third reference voltage, it is determined that an error has occurred in the pogo pin.

7. The aforementioned main board is When the operating state is the screen off state and the charging on state, it is determined whether the output voltage is below the fourth reference voltage. If the output voltage is less than or equal to the fourth reference voltage, the charging current of the battery is increased. The display device according to claim 3, wherein if the output voltage is less than or equal to a fifth reference voltage which is less than the fourth reference voltage, it is determined that an error has occurred in the pogo pin.

8. The detection circuit is A Zener diode having a Zener voltage, and The display device according to claim 2, comprising a Low DropOut (LDO) circuit that outputs a pre-set voltage when a first voltage above a specified voltage is input, and outputs a voltage proportional to the second voltage when a second voltage below the specified voltage is input.

9. The aforementioned main board is A comparator that compares the output voltage with the reference voltage, The display device according to claim 2, further comprising a switch circuit that outputs a signal indicating whether or not an error has occurred at the pogo pin based on the output value of the comparator.

10. The aforementioned switch circuit is If the output value is less than or equal to a previously set value, a low signal is output to the pogo pin indicating that no error has occurred. The display device according to claim 9, wherein if the output value exceeds a previously set value, a high signal is output to the pogo pin indicating that an error has occurred.

11. The display device according to claim 1, wherein the main board determines that an error has occurred in the pogo pin, and displays a notification on the display indicating that an error has occurred in the pogo pin.

12. The display device according to claim 1, wherein the main board determines that an error has occurred in the pogo pins, and turns off the display screen and stops charging the battery.

13. If the main board determines that an error has occurred in the pogo pin, While turning off the charging of the aforementioned battery, the power stored in the aforementioned battery is used to turn on the screen of the aforementioned display. The display device according to claim 1, wherein a guide for damaging or re-fastening the pogo pin is displayed on the display.

14. The display device according to claim 1, wherein the main board determines whether an error has occurred in the pogo pins when the stand is electrically fastened to the head via the pogo pins.

15. The aforementioned stand is equipped with an adapter that converts AC power to DC power, The head further comprises a charging board that controls the charging of the battery, The aforementioned charging board is A DC / DC converter that converts the DC power transmitted 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 a DC power supply transmitted from the adapter, and The display device according to claim 2, comprising the detection circuit.

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

17. A method for operating a display device, The aforementioned display device is Battery and; Stand and; alongside A head supported by the aforementioned stand and equipped with a display; The head is electrically fastened via a pogo pin provided on the connector of the stand. The steps include obtaining the operating state of the head and the input voltage input to the head via the pogo pins, The process includes the step of determining whether or not an error has occurred in the pogo pin based on the operating state of the head and the input voltage, The operating state of the head is a state that represents a combination of the screen state of the display and the charge state of the battery. The aforementioned screen state is either the screen on state or the screen off state. A method for operating a display device, wherein the charging state is either a charging-on state or a charging-off state.

18. The display device further comprises a detection circuit that outputs an output voltage based on the input voltage, The aforementioned operation method is, The steps include comparing the output voltage with the reference voltage, A method for operating a display device according to claim 17, further comprising the step of determining whether or not an error has occurred in the pogo pin based on the comparison result.

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