Display device

Abstract

A display device according to an embodiment of the present disclosure may comprise: a stand having a stand battery; and a head supported by the stand, and having a display, a head battery, and a power connector for electrical connection to the stand, wherein the head further comprises a controller for controlling charging of the head battery and the stand battery on the basis of a power connection state of the head, a power connection state of the stand, a charging state of the head battery, and a charging state of the stand battery.

Description

display device

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

[0002] As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) are being researched and used in recent years.

[0003] Among these, the LCD panel has a TFT substrate and a color substrate that face each other with a liquid crystal layer in between, and can display images using light provided from a backlight unit. In addition, the OLED panel can display images by depositing an organic layer capable of self-luminescence on a substrate on which a transparent electrode is formed.

[0004] Recently, much research has been conducted on the structure of a display device in which the stand is detachable from the head.

[0005] Existing stand-type display devices, including a stand and head, have limited battery capacity due to the battery being located only in the head. To address this issue, attempts are being made to incorporate a battery into the stand as well.

[0006] However, the scenario of charging two batteries simultaneously requires an increase in power capacity, which increases cost and capacity of the adapter.

[0007] An object of the present disclosure may be to efficiently charge a battery provided in a head and a battery provided in a stand.

[0008] An object of the present disclosure may be to efficiently charge two batteries without increasing the capacity of the adapter due to the addition of a stand battery.

[0009] An object of the present disclosure may be to stably supply power to components provided in a display device.

[0010] A display device according to an embodiment of the present disclosure includes a stand having a stand battery and a head supported by the stand and having a display, a head battery, and a power connector for electrical connection with the stand, wherein the head may further include a controller that controls charging of the head battery and the stand battery based on a power connection state of the head, a power connection state of the stand, a charging state of the head battery, and a charging state of the stand battery.

[0011] According to an embodiment of the present disclosure, two batteries can be efficiently charged depending on the power connection status of the head and the stand, and the charging status of the head battery and the stand battery.

[0012] Accordingly, two batteries can be charged efficiently without increasing the capacity of the adapter due to the addition of a stand battery.

[0013] Additionally, as the two batteries are efficiently charged, the components in the display device can be stably powered.

[0014] FIG. 1A and FIG. 1B are drawings explaining the structure of a display device according to an embodiment of the present disclosure.

[0015] FIG. 2 is a block diagram illustrating the configuration of a display device according to one embodiment of the present disclosure.

[0016] FIG. 3 is a drawing illustrating the structure of a display device according to another embodiment of the present disclosure.

[0017] FIG. 4a and FIG. 4b are drawings explaining the internal configuration of the head and stand of the display device of FIG. 2.

[0018] FIG. 5 and FIG. 6 are flowcharts for explaining a power control method of a display device according to the embodiment of FIG. 4a.

[0019] FIG. 7 is a table explaining the operations of the first to third switches according to the power connection state of the head of the display device of FIG. 4a of the present disclosure, the power connection state of the stand, the charging on / off of the head battery, and the charging on / off of the stand battery.

[0020] FIG. 8 is a drawing illustrating the structure of a display device according to another embodiment of the present disclosure.

[0021] FIG. 9 is a drawing explaining the internal configuration of the head and stand of the display device according to the embodiment of FIG. 8.

[0022] FIG. 10 is a flowchart explaining an operating method of a display device according to the embodiments of FIGS. 8 and 9.

[0023] FIG. 11 is a drawing illustrating a process of supplying power to a head or head battery through a stand battery when an external power source is not connected to the head and stand according to one embodiment of the present disclosure.

[0024] Hereinafter, embodiments related to the present invention will be described in more detail with reference to the drawings. The suffixes "module" and "part" used in the following description for components are assigned or used interchangeably solely for the convenience of writing the specification, and do not in themselves have distinct meanings or roles.

[0025] The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and the technical ideas disclosed in this specification are not limited thereby.

[0026] A display device according to an embodiment of the present invention is, for example, an intelligent display device that adds computer-assisted functionality to its broadcast reception function. While faithfully performing the broadcast reception function, it can also be equipped with Internet functionality and other features, providing a more user-friendly interface, such as a manual input device, touch screen, or space remote control. Furthermore, with support for wired or wireless Internet functionality, it can connect to the Internet and a computer, enabling functions such as email, web browsing, banking, or gaming. A standardized, general-purpose operating system can be used for these various functions.

[0027] Accordingly, 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 deleted on a general-purpose operating system kernel. More specifically, the display device can be a network TV, HBB TV, smart TV, LED TV, OLED TV, etc., and in some cases, it can also be applied to smartphones.

[0028] FIG. 1A and FIG. 1B are drawings explaining the structure of a display device according to an embodiment of the present disclosure.

[0029] Referring to FIGS. 1A and 1B, a display device (1) may include a head (10). The head (10) may include a display panel (11) that displays an image.

[0030] The head (10) may be referred to as a display (10) or a display unit (10).

[0031] 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).

[0032] Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are illustrated and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it may also be possible for the lengths of the first and second long sides (LS1, LS2) to be approximately equal to the lengths of the first and second short sides (SS1, SS2).

[0033] The direction parallel to the short sides (SS1, SS2) of the head (10) may be referred to as the up-down direction or the first direction (DR1). The direction parallel to the long sides (LS1, LS2) of the head (10) may be referred to as the left-right direction or the second direction (DR2). The direction perpendicular to the short sides (SS1, SS2) and long sides (LS1, LS2) of the head (10) may be referred to as the front-back direction or the third direction (DR3).

[0034] The direction in which the head (10) displays the image may be referred to as the forward (F, z), and the opposite direction may be referred to as the backward (R). The first short side (SS1) may be referred to as the left (Le, x). The second short side (SS2) may be referred to as the right (Ri). The first long side (LS1) may be referred to as the upper side (U, y). The second long side (LS2) may be referred to as the lower side (D).

[0035] 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 point 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 a corner. The point where the first short side (SS1) and the first long side (LS1) meet may be a first corner (C1). The point where the first short side (SS1) and the second long side (LS2) meet may be a second corner (C2). The point where the second short side (SS2) and the second long side (LS2) meet may be a third corner (C3). The point where the second short side (SS2) and the first long side (LS1) meet may be a fourth corner (C4).

[0036] The display device (1) may include a stand (20, 30, 40, 50) that supports the head (10).

[0037] The stand (20, 30, 40, 50) may include a base (20), a pole (30), a swivel connector (40), and a support arm (50).

[0038] The stand (20, 30, 40, 50) can be detachably connected to the head (10).

[0039] The base (20) can be placed on the ground. The base (20) can be round or angular. A plurality of wheels (20W) can be provided on the lower surface of the base (20).

[0040] The adapter (CWc) and plug (CWa) connected to the power cable (CW) can be connected to a concentric plug that supplies external power.

[0041] The jack (CWb) of the power cable (CW) can be connected to the base (20).

[0042] The adapter (CWc) can convert external AC power into DC power and supply the converted DC power to the jack (CWb).

[0043] A battery (not shown) may be built into the base (20), pole (30), support arm (50), and / or head (10) and may be charged by power supplied through a power cable (CW). The display device (1) may be powered by the battery and operated while being separated from the power cable (CW).

[0044] The pole (30) can extend vertically from the base (20). The lower end of the pole (30) can be connected to the pole (30) adjacent to the periphery of the base (20).

[0045] 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).

[0046] The head (10) can be supported by a stand (20, 30, 40, 50) and can be spaced upward from the ground.

[0047] 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 rotate in one or more of the up / down / left / right directions.

[0048] The rotary connector (40) and head (10) may have a detachable structure.

[0049] FIG. 2 is a block diagram illustrating the configuration of a display device according to one embodiment of the present disclosure.

[0050] 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).

[0051] Each of 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 be provided in the head (10). However, it is not necessary to be limited thereto, and some components may be provided in the stand (20, 30, 40, 50).

[0052] The broadcast receiving unit (130) may include a tuner (131), a demodulator (132), and a network interface (133).

[0053] The tuner (131) can select a specific broadcast channel according to a channel selection command. The tuner (131) can receive a broadcast signal for the selected specific broadcast channel.

[0054] 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 a form that can be output.

[0055] The external device interface (135) can receive an application or a list of applications within an adjacent external device and transmit it to the controller (170) or memory (140).

[0056] The external device interface (135) can provide a connection path between the display device (1) and the external device. The external device interface (135) can receive one or more of images and audio output from an external device connected wirelessly or wiredly to the display device (1) and transmit them to the controller (170).

[0057] The external device interface (135) may include a plurality of external input terminals. The plurality of external input terminals may include an RGB terminal, one or more HDMI (High Definition Multimedia Interface) terminals, and a component terminal.

[0058] A video signal of an external device input through an external device interface (135) can be output through a display (180). A voice signal of an external device input through an external device interface (135) can be output through a speaker (185).

[0059] An 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, a DVD player, a game console, a sound bar, a smartphone, a PC, a USB memory, and a home theater, but this is only an example.

[0060] The external device interface (135) may be provided on one or more of the head (10) or the stand (20, 30, 40, 50).

[0061] The network interface (133) can provide an interface for connecting the display device (1) to a wired / wireless network including the Internet.

[0062] The network interface (133) can transmit or receive data to or from other users or other electronic devices via the connected network or another network linked to the connected network.

[0063] The network interface (133) can transmit some content data stored in the display device (1) to a selected user or electronic device among other users or other electronic devices pre-registered in the display device (1).

[0064] The network interface (133) can access a predetermined web page via the connected network or another network linked to the connected network. The network interface (133) can access a predetermined web page via the network and transmit or receive data with the corresponding server.

[0065] 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, broadcast signals, and other related information provided by a content provider or network provider via a network.

[0066] The network interface (133) can receive firmware update information and update files provided by the network operator, and can transmit data to the Internet or content provider or network operator.

[0067] The network interface (133) can select and receive a desired application from among applications open to the public via a network.

[0068] The memory (140) stores a program for each signal processing and control within the controller (170), and can store signal-processed image, voice, or data signals.

[0069] The memory (140) may perform a function for temporary storage of video, audio, or data signals input from an external device interface (135) or a network interface (133), and may also store information about a specific image through a channel memory function.

[0070] The memory (140) can store an application or a list of applications input from an external device interface (135) or a network interface (133).

[0071] The display device (1) can play content files (video files, still image files, music files, document files, application files, etc.) stored in the memory (140) and provide them to the user.

[0072] 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, Ultra Wideband (WB), ZigBee, Radio Frequency (RF) communication, or infrared (IR) communication, or process control signals from the controller (170) to be transmitted to the remote control device (200).

[0073] 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).

[0074] An image signal processed by the controller (170) can be input to the display (180) and displayed as an image corresponding to the image signal. An image signal processed by the controller (170) can be input to an external output device through an external device interface (135).

[0075] The voice signal processed by the controller (170) can be output as audio to the speaker (185). The voice signal processed by the controller (170) can be input to an external output device through the external device interface (135).

[0076] In addition, the controller (170) can control the overall operation within the display device (1).

[0077] The controller (170) can control the display device (1) by a user command or an internal program input through the user input interface (150), and can connect to a network to enable the user to download a desired application or application list into the display device (1).

[0078] The controller (170) enables the user-selected channel information, etc. to be output through a display (180) or speaker (185) together with processed video or audio signals.

[0079] The controller (170) allows a video signal or audio signal from an external device, for example, a camera or camcorder, input through the external device interface (135) to be output through the display (180) or speaker (185) in accordance with an external device video playback command received through the user input interface (150).

[0080] The controller (170) can control the display (180) to display an image, for example, a broadcast image input through a tuner (131), an external input image input through an external device interface (135), an image input through a network interface, or an image stored in a memory (140) can be controlled to be displayed on the display (180). In this case, the image displayed on the display (180) can be a still image or a moving image, and can be a 2D image or a 3D image.

[0081] The controller (170) can control the playback of content stored in the display device (1), received broadcast content, or external input content input from outside, and the content can be in various forms such as broadcast video, external input video, audio file, still image, connected web screen, and document file.

[0082] The wireless communication interface (173) can communicate with an external device through wired or wireless communication. The wireless communication interface (173) can perform short-range communication with the external device. To this end, the wireless communication interface (173) can support short-range communication using at least one of Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies.

[0083] 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 wireless area network. The wireless area network can be a wireless personal area network.

[0084] The wireless communication interface (173) can detect (or recognize) a wearable device capable of communication around the display device (1).

[0085] If the detected wearable device is a device certified 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 in the display device (1) to the wearable device via the wireless communication interface (173). Accordingly, a user of the wearable device can utilize the data processed in the display device (1) via the wearable device.

[0086] The display (180) can generate a driving signal by converting a video signal, data signal, OSD signal processed by the controller (170) or a video signal, data signal, etc. received from an external device interface (135) into R, G, and B signals, respectively.

[0087] Meanwhile, since the display device (1) illustrated in FIG. 2 is merely an embodiment of the present invention, some of the illustrated components may be integrated, added, or omitted depending on the specifications of the display device (1) actually implemented.

[0088] That is, two or more components may be combined into a single component, or a single component may be subdivided into two or more components, as needed. Furthermore, the functions performed by each block are intended to illustrate embodiments of the present invention, and their specific operations or devices do not limit the scope of the present invention.

[0089] According to another embodiment of the present invention, the display device (1) may receive and play an image through a network interface (133) or an external device interface (135) without having a tuner (131) and a demodulator (132), unlike as shown in FIG. 2.

[0090] For example, the display device (1) may be implemented separately as an image processing device, such as a set-top box, for receiving contents according to broadcast signals or various network services, and a content playback device for playing contents input from the image processing device.

[0091] In this case, the operating method of the display device according to the embodiment of the present invention to be described below may be performed by any one of the display device (1) described with reference to FIG. 2, as well as an image processing device such as the separated set-top box, or a content playback device having a display (180) and a speaker (185).

[0092] FIG. 3 is a drawing illustrating the structure of a display device according to another embodiment of the present disclosure.

[0093] Referring to FIG. 3, the display device (1-1) may include a head (10) and a stand (20, 30, 40, 50).

[0094] The display device (1-1) of FIG. 3 may include a head power connection unit (410), a head battery (411) provided in the head (10), a power connector (415), a stand power connection unit (430), and a stand battery (433) provided in the base (20) compared to the configuration of the display device (1) of FIGS. 1A to 2.

[0095] The capacity of the head battery (411) may be greater than the capacity of the stand battery (433). The head battery (411) may be referred to as a main battery, and the stand battery (433) may be referred to as an auxiliary battery.

[0096] The head (10) may include a head battery (411) and a head power connector (410). The head power connector (410) may be connected to an outlet that supplies external power.

[0097] The head power connection (410) and the outlet can be connected via a power cable, adapter, and plug.

[0098] The head battery (411) can be charged by either power supplied from the head power connector (410) or power supplied from the stand power connector (430).

[0099] The head battery (411) can supply power to components provided in the head (10) through discharge.

[0100] The base (20) may include a stand battery (433) and a stand power connection (430).

[0101] The stand power connector (430) can be connected to an outlet that supplies external power.

[0102] The stand power connection (430) and the outlet can be connected via a power cable, adapter, and plug.

[0103] The stand power connection (430) may be the jack (CWb) described in FIG. 1b.

[0104] The power connector (415) may be positioned adjacent to the rotary connector (40) and may be an interface for power transmission between the head (10) and the stand (20, 30, 40, 50).

[0105] The power connector (415) may be configured as a pogo type.

[0106] Power supplied from the head power connector (410) can be used to charge the head battery (411) or the stand battery (433).

[0107] Power supplied from the stand power connector (430) can be used to charge the head battery (411) or the stand battery (433).

[0108] Power discharged from the stand battery (433) can be supplied to the power connector (415) along the power cable (195) and transmitted to the components provided in the head (10).

[0109] A power cable (195) can be connected from the stand battery (433) through the pole (30) to the power connector (415). Power supplied from the stand (20, 30, 40, 50) can be transmitted to the power connector (415) through the power cable (195).

[0110] FIG. 4a and FIG. 4b are drawings explaining the internal configuration of the head and stand of the display device of FIG. 2.

[0111] Referring to FIG. 4a, the head (10) may include a head power connection (410), a head battery (411), a head power board (413), a power connector (415), a first switch (417), a second switch (419), and a controller (170).

[0112] In addition to the head (10), the head may further include a broadcast receiving unit (130), an external device interface (135), a memory (140), a user input interface (150), a wireless communication interface (173), a display (180), a speaker (185), and a power supply circuit (190) as shown in FIG. 2.

[0113] The head battery (411) and head power board (413) may be included in the power supply circuit (190).

[0114] The head power connection (410) can transmit power supplied from an external power source to the head (10) or stand (20, 30, 40, 50).

[0115] The head battery (411) can be charged or discharged under the control of the head power board (413).

[0116] The head power board (413) can supply power supplied from the head power connection unit (410) to the head battery (411), controller (170), backlight unit (not shown), etc.

[0117] The head power board (413) can supply power to components provided in the head (10) under the control of the controller (170).

[0118] The head power board (413) may include a circuit that converts AC power into DC power, a DC / DC converter that regulates DC power, a charging booster, etc.

[0119] The power connector (415) can receive power input to the head power connection (410) and transmit it to the head power board (413).

[0120] The power connector (415) can transmit power input to the head power connection (410) to the stand battery (433).

[0121] The first switch (417) can be turned on or off according to a control signal received from the controller (170). When the first switch (417) is turned on, power input to the stand power connection (430) can be transmitted to the head battery (411) through the power connector (415).

[0122] One end of the first switch (417) can be connected to a power connector (415), and the other end of the first switch (417) can be connected to a head power board (413).

[0123] The second switch (419) can be turned on or off according to a control signal received from the controller (170). When the second switch (419) is turned on, power supplied to the head power connection unit (410) can be transmitted to the stand battery (433) through the stand power board (435).

[0124] One end of the second switch (419) can be connected to the head power board (413) and the head power connection (410), and the other end of the second switch (419) can be connected to the power connector (415).

[0125] Each of the first switch (417) and the second switch (419) may be composed of a rectifier diode or a field effect transistor (FET).

[0126] The controller (170) can control the overall operation of the display device (1-1).

[0127] The controller (170) can transmit a power control signal to the head power board (413) or the stand power board (435).

[0128] The head power board (413) can charge the head battery (411) or discharge the head battery (413) according to the power control signal transmitted from the controller (170).

[0129] The stand power board (435) can charge or discharge the stand battery (433) according to a power control signal transmitted from the controller (170).

[0130] The base (20) may include a stand power connection (430), a detection circuit (431), a stand battery (433), a stand power board (435), and a third switch (437).

[0131] The stand power connection (430) can transmit power supplied from an external power source to the stand battery (433) through the stand power board (435) or to the power connector (415).

[0132] Power transmitted to the power connector (415) is transmitted to the head power board (413) via the first switch (417) and can be supplied to the head battery (411) or controller (170).

[0133] The detection circuit (431) can detect whether external power is input through the stand power connection (430). If the detection circuit (431) detects that external power is supplied through the stand power connection (430), it can transmit a detection signal to the controller (170).

[0134] The detection circuit (431) may include either a current detector that detects current or a voltage detector that detects voltage.

[0135] The stand battery (433) can be charged or discharged by the stand power board (435). The power discharged from the stand battery (433) can be used to supply power to the controller (170) provided in the head (10), the backlight unit, or the components provided in the stand (20, 30, 40, 50).

[0136] The stand power board (435) can supply power supplied from the stand power connection (430) to the stand battery (433) and head (10).

[0137] The stand power board (435) may include a circuit that converts AC power into DC power, a DC / DC converter that regulates DC power, a charging booster, etc.

[0138] The third switch (437) can be turned on or off according to a control signal received from the controller (170). When the third switch (437) is turned on, power discharged from the stand battery (433) can be transmitted to the head (10) through the power connection (415).

[0139] One end of the third switch (437) can be connected to a stand battery (433), and the other end of the third switch (437) can be connected to a power connector (415).

[0140] The third switch (437) may be composed of a rectifier diode or a field effect transistor (FET).

[0141] Figure 4b shows an example in which each of the first switch (417), the second switch (419), and the third switch (437) of Figure 4a is configured as a rectifier diode.

[0142] That is, in FIG. 4b, each of the first switch (417), the second switch (419), and the third switch (437) can be implemented as a first rectifier diode (417a), a second rectifier diode (419a), and a third rectifier diode (437a), respectively.

[0143] FIG. 5 and FIG. 6 are flowcharts for explaining a power control method of a display device according to the embodiment of FIG. 4a.

[0144] Below, a power control method of a display device (1-1) is described based on the embodiment of FIG. 4a.

[0145] The controller (170) of the display device (1-1) can obtain the power connection status of the head (10), the power connection status of the stand (20, 30, 40, 50), the charging status of the head battery (411), and the charging status of the stand battery (433) (S501).

[0146] The power connection status indicates whether an external power source is connected and may include a connected state and a disconnected state.

[0147] The head power board (413) can determine that the head (10) is powered on when external power is supplied to the head power connection (410).

[0148] The head power board (413) can periodically measure the charging status of the head battery (411). The charging status of the head battery (411) can be expressed as SOC (Status of Charge), which indicates the remaining capacity compared to the total capacity of the battery.

[0149] The controller (170) can receive the power connection status of the head (10) and the charging status of the head battery (411) from the head power board (413).

[0150] The controller (170) can receive the power connection status of the stand power connection unit (430) from the detection circuit (431).

[0151] The stand power board (435) can periodically measure the state of charge of the stand battery (433). The state of charge of the stand battery (433) can be expressed as SOC (Status of Charge), which indicates the remaining capacity compared to the total capacity of the battery.

[0152] The controller (170) can receive the charging status of the stand battery (433) from the stand power board (435).

[0153] The controller (170) of the display device (1-1) can control the power of the head battery (411) and the stand battery (437) based on the power connection status of the acquired head (10), the power connection status of the stand (20, 30, 40, 50), the charging status of the head battery (411), and the charging status of the stand battery (433) (S503).

[0154] Step S503 is described in detail with reference to FIG. 6.

[0155] The controller (170) can control the charging of the head battery (411) and the stand battery (437) based on the power connection status of the acquired head (10), the power connection status of the stand (20, 30, 40, 50), the charging status of the head battery (411), and the charging status of the stand battery (433).

[0156] In particular, the controller (170) can cross-charge the head battery (411) and the stand battery (437) based on the power connection status of the head (10), the power connection status of the stand (20, 30, 40, 50), the charging status of the head battery (411), and the charging status of the stand battery (433).

[0157] Referring to FIG. 6, the controller (170) of the display device (1-1) can determine whether an external power source is connected to the head (10) (S601).

[0158] The controller (170) can receive a signal indicating whether an external power source is connected to the head power connection (410) from the head power board (413), and can determine whether an external power source is connected to the head (10) based on the received signal.

[0159] If the controller (170) determines that an external power source is connected to the head (10), it can determine whether an external power source is connected to the stand (20, 30, 40, 50) (S603).

[0160] When the controller (170) receives a detection signal from the detection circuit (431), it can determine that an external power source is connected to the stand (20, 30, 40, 50).

[0161] When the controller (170) receives a non-detection signal from the detection circuit (431), it can determine that an external power source is not connected to the stand (20, 30, 40, 50).

[0162] When an external power source is connected to the head (10) and an external power source is connected to the stand (20, 30, 40, 50), the controller (170) can charge the head battery (411) with the power supplied to the head (10) and charge the stand battery (433) with the power supplied to the stand (20, 30, 40, 50) (S605).

[0163] The percentage may be 30% and the target percentage may be 100%, but this is just an example.

[0164] The controller (170) can determine whether there is a battery with an SOC below a certain percentage when an external power source is connected to the head (10) and an external power source is not connected to the stand (20, 30, 40, 50) (S607).

[0165] A certain percentage may be 30%, but this is just an example.

[0166] If there is a battery with an SOC below a certain percentage, the controller (170) can charge the battery with priority (S609).

[0167] The controller (170) can charge the head battery (411) first when the SOC of the head battery (411) is below a certain percentage and the SOC of the stand battery (433) exceeds a certain percentage.

[0168] The controller (170) can control the head power board (413) so that power input through the head power connection (410) is supplied to the head battery (411). At the same time, the controller (170) can turn off the first switch (417), the second switch (419), and the third switch (437).

[0169] The controller (170) can give priority to the head battery (411) and charge the head battery (411) to the target ratio, and then charge the stand battery (433). After charging the head battery (411) to the target ratio, the controller (170) can supply power input to the head power connection unit (410) to the stand battery (433) through the power connector (415).

[0170] To this end, the controller (170) can turn off the first switch (417), turn on the second switch (419), and turn off the third switch (437).

[0171] In another embodiment, the controller (170) may charge the stand battery (433) first when the SOC of the head battery (411) exceeds a certain percentage and the SOC of the stand battery (433) is below a certain percentage.

[0172] The controller (170) can turn off the first switch (417), turn on the second switch (419), and turn off the third switch (437) so that power input through the head power connector (410) is supplied to the stand battery (433). The stand power board (435) can charge the stand battery (433) with power provided through the power connector (415).

[0173] In another embodiment, the controller (170) may charge the head battery (411) first when the SOC of each of the head battery (411) and the stand battery (433) is below a certain percentage.

[0174] The reason for charging the head battery (411) first is to quickly supply power to the main components of the head (10), as the main components are arranged in the head (10).

[0175] If there is no battery with an SOC below a certain percentage, the controller (170) can charge the head battery (411) to the target percentage using power supplied through the head (10) and then charge the stand battery (433) (S611).

[0176] To this end, the controller (170) can turn off all of the first switch (417), the second switch (419), and the third switch (437).

[0177] Meanwhile, the controller (170) can determine whether an external power source is connected to the stand (20, 30, 40, 50) when an external power source is not connected to the head (10) (S613).

[0178] If the controller (170) determines that an external power source is connected to the stand (20, 30, 40, 50), it can determine whether a battery with an SOC below a certain percentage exists (S615).

[0179] If there is a battery with an SOC below a certain percentage, the controller (170) can charge the battery with priority (S617).

[0180] The controller (170) can charge the head battery (411) first when the SOC of the head battery (411) is below a certain percentage and the SOC of the stand battery (433) exceeds a certain percentage.

[0181] The controller (170) can turn on the first switch (417) and turn off the second switch (419) and the third switch (437) so that power input through the stand power connection (430) is supplied to the head battery (411).

[0182] The controller (170) can give priority to the head battery (411) and charge the head battery (411) to the target ratio, and then charge the stand battery (433). After charging the head battery (411) to the target ratio, the controller (170) can supply power input to the stand power connector (430) to the stand battery (433).

[0183] In another embodiment, the controller (170) may charge the stand battery (433) first when the SOC of the head battery (411) exceeds a certain percentage and the SOC of the stand battery (433) is below a certain percentage.

[0184] The controller (170) can turn off the first switch (417), the second switch (419), and the third switch (437) so that power input through the stand power connection (430) is supplied to the stand battery (433). The stand power board (435) can charge the stand battery (433) with power provided through the stand power connection (430).

[0185] In another embodiment, the controller (170) may charge the head battery (411) first when the SOC of each of the head battery (411) and the stand battery (433) is below a certain percentage.

[0186] The reason for charging the head battery (411) first is to quickly supply power to the main components of the head (10), as the main components are arranged in the head (10).

[0187] If there is no battery with an SOC below a certain percentage, the controller (170) can charge the head battery (411) to a target percentage using power supplied through the stand (20, 30, 40, 50) and then charge the stand battery (433) (S619).

[0188] The controller (170) can transmit power input to the stand power connection (430) to the head power board (413) through the power connector (415) by turning on the first switch (417) and turning off the second switch (419) and the third switch (437). The head power board (413) can provide the supplied power to the head battery (411).

[0189] In this way, according to the embodiment of the present disclosure, two batteries can be efficiently charged depending on the power connection status of the head (10) and the stand (20, 30, 40, 50) and the charging status of the head battery (411) and the stand battery (433). Accordingly, two batteries can be efficiently charged without increasing the capacity of the adapter due to the addition of the stand battery (433).

[0190] Additionally, as the two batteries are efficiently charged, power can be stably supplied to the components provided in the head (10) of the display device (1-1).

[0191] FIG. 7 is a table explaining the operations of the first to third switches according to the power connection state of the head of the display device of FIG. 4a of the present disclosure, the power connection state of the stand, the charging on / off of the head battery, and the charging on / off of the stand battery.

[0192] The power supply item (710) may be an item indicating whether external power is supplied to the head (10) through the head power connection (410) and whether external power is supplied to the stand (20, 30, 40, 50) through the stand power connection (430).

[0193] O indicates that external power is supplied, and X indicates that external power is not supplied.

[0194] The charging item (730) may be an item indicating whether the head battery (411) and stand battery (433) are being charged.

[0195] O indicates charging (charge on state), and X indicates not charging (charge off state).

[0196] The power switch control item (750) may be an item that describes the operation of the first switch (417), the second switch (419), and the third switch (437) depending on whether external power is supplied to the head power connection unit (410) or the stand power connection unit (430) and whether the head battery (411) or the stand battery (433) is being charged.

[0197] On can indicate that the switch is turned on, and Off can indicate that the switch is not turned on.

[0198] The note item (770) may be an item indicating the charging status of two batteries for each case.

[0199] If an external power source is not connected to the head (10) and stand (20, 30, 40, 50), the head battery (411) and stand battery (433) are not charged.

[0200] Additionally, there is no case in which both the head battery (411) and the stand battery (433) are not charged when an external power source is applied to either the head (10) or the stand (20, 30, 40, 50).

[0201] There is no case where both the head battery (411) and the stand battery (433) are charged when an external power source is connected to either the head (10) or the stand (20, 30, 40, 50).

[0202] When an external power source is connected to each of the head (10) and the stand (20, 30, 40, 50), there is no case in which either the head battery (411) or the stand battery (433) is not charged.

[0203] When an external power source is connected to each of the head (10) and the stand (20, 30, 40, 50), the head battery (411) and the stand battery (433) are charged simultaneously.

[0204] The first case (701) is a case in which an external power source is not connected to the head (10), an external power source is connected to the stand (20, 30, 40, 50), the SOC of the stand battery (433) is 30 or less, and the SOC of the head battery (411) exceeds 30. In this case, the controller (170) can turn off the third switch (437) to charge the stand battery (433) using the external power source supplied through the stand power connection (430). After charging the stand battery (433) to the target ratio, the controller (170) can turn on the first switch (417) and turn off the second switch (419) to charge the head battery (411).

[0205] The second case (703) is a case in which an external power source is not connected to the head (10), an external power source is connected to the stand (20, 30, 40, 50), and the SOC of each of the head battery (411) and the stand battery (433) exceeds 30. In this case, the controller (170) can charge the head battery (411) preferentially using the external power source supplied through the stand connection part (430). The reason for charging the head battery (411) preferentially is to quickly supply power to the main components for driving the display device (1-1) in the head (10). The controller (170) can turn on the first switch (417) and turn off the second switch (419) and the third switch (437) to charge the head battery (411) preferentially.

[0206] The third case (705) is a case in which an external power source is connected to the head (10), an external power source is not connected to the stand (20, 30, 40, 50), the SOC of the stand battery (433) is 30 or less, and the SOC of the head battery (411) exceeds 30. In this case, the controller (170) can turn on the second switch (419) to charge the stand battery (433) using the external power source supplied through the head power connection unit (410), and turn off the first switch (417) and the third switch (437).

[0207] The fourth case (707) is a case in which an external power source is connected to the head (10), an external power source is not connected to the stand (20, 30, 40, 50), and the SOC of the head battery (411) and the stand battery (433) exceeds 30. In this case, the controller (170) can turn off the first switch (417), the second switch (419), and the third switch (437) to charge the head battery (411) using the external power source supplied through the head connection unit (410). After charging the head battery (411) to the target ratio, the controller (170) can charge the stand battery (433).

[0208] If an external power source is not connected to each of the head power connection unit (410) and the stand power connection unit (430), the head battery (411) and the stand battery (433) are not charged.

[0209] FIG. 8 is a drawing illustrating the structure of a display device according to another embodiment of the present disclosure.

[0210] Referring to FIG. 8, the display device (1-2) may include a head (10) and a stand (20, 30, 40, 50).

[0211] The display device (1-2) of FIG. 8 may include a head battery (411) provided in the head (10). That is, unlike the display device (1-1) of FIG. 3, the display device (1-2) of FIG. 8 may not include a stand battery (433).

[0212] The head (10) may further include a head battery (411) and a head power connector (410). The head power connector (410) may be connected to an outlet that supplies external power.

[0213] The head power connection (410) and the outlet can be connected via a power cable, adapter, and plug.

[0214] The head battery (411) can be charged by either power supplied from the head power connector (410) or power supplied from the stand power connector (430).

[0215] The head battery (411) can supply power to components provided in the head (10) through discharge.

[0216] The base (20) may include a stand power connection unit (430) and a first functional unit (801). The first functional unit (801) may be an interface for connecting an external device (e.g., a Bluetooth speaker) or an installation space for performing additional functions.

[0217] A stand (803) and a second functional unit (805) may be provided on one side of the pole (30). The stand (803) may be an element for holding a user's smart device. The stand (803) may support wireless charging. The second functional unit (805) may be an interface for connecting an external device (e.g., a Bluetooth speaker) or an installation space for performing additional functions.

[0218] The stand power connector (430) can be connected to an outlet that supplies external power.

[0219] The stand power connection (430) and the outlet can be connected via a power cable, adapter, and plug.

[0220] The stand power connection (430) may be the jack (CWb) described in FIG. 1b.

[0221] The connector (40) may include a power connector (415) which is an interface for power transmission between the head (10) and the stand (20, 30, 40, 50).

[0222] The power connector (415) may be configured as a pogo type.

[0223] Power supplied from the head power connector (410) can be used to charge the head battery (411).

[0224] Power supplied from the stand power connector (430) can be used to charge the head battery (411).

[0225] FIG. 9 is a drawing explaining the internal configuration of the head and stand of the display device according to the embodiment of FIG. 8.

[0226] Referring to FIG. 9, the head (10) may include a head power connection (410), a head battery (411), a head power board (413), a power connector (415), a first switch (417), a second switch (419), and a controller (170).

[0227] In addition, the head (10) may further include components illustrated in FIG. 2.

[0228] The head power connection (410) can transmit power supplied from an external power source to the head (10) or stand (20, 30, 40, 50).

[0229] The head battery (411) can be charged or discharged under the control of the head power board (413).

[0230] The head power board (413) can supply power supplied from the head power connection (410) to the head battery (411), controller (170), backlight unit, etc.

[0231] The head power board (413) can supply power to components provided in the head (10) under the control of the controller (170).

[0232] The head power board (413) may include a circuit that converts AC power into DC power, a DC / DC converter that regulates DC power, a charging booster, etc.

[0233] The power connector (415) is connected to the stand power connection (430), and can receive power supplied to the stand power connection (430) and transmit it to the head power board (413).

[0234] The first switch (417) can be turned on or off according to a control signal received from the controller (170). When the first switch (417) is turned on, power supplied to the stand power connection unit (430) can be transmitted to the head battery (411) through the head power board (413).

[0235] The second switch (419) can be turned on or off according to a control signal received from the controller (170). When the second switch (419) is turned on, power supplied to the head power connection unit (410) can be supplied to the stand (20, 30, 40, 50) or components provided in the stand (20, 30, 40, 50).

[0236] Each of the first switch (417) and the second switch (419) may be composed of a rectifier diode or a field effect transistor (FET).

[0237] The controller (170) can control the overall operation of the display device (1-1).

[0238] The controller (170) can transmit a power control signal to the head power board (413).

[0239] The head power board (413) can charge the head battery (411) or discharge the head battery (413) according to the power control signal transmitted from the controller (170).

[0240] The stand (20, 30, 40, 50) may include a stand power connection unit (430), a detection circuit (431), a third switch (437), and a function unit (800).

[0241] The stand power connection unit (430) can transmit power supplied from an external power source to the power connector (415) through the third switch (437) or to the functional unit (800). The functional unit (800) can include the first functional unit (801), the stand (803), and the second functional unit (805) described in FIG. 8.

[0242] Power transmitted to the power connector (415) is transmitted to the head power board (413) via the first switch (417) and can be supplied to the head battery (411) or controller (170).

[0243] The detection circuit (431) can detect whether external power is input through the stand power connection (430). If the detection circuit (431) detects that external power is supplied through the stand power connection (430), it can transmit a detection signal to the controller (170).

[0244] The detection circuit (431) may include either a current detector that detects current or a voltage detector that detects voltage.

[0245] The third switch (437) can be turned on or off according to a control signal received from the controller (170). When the third switch (437) is turned on, power supplied from the stand power connection unit (430) can be transmitted to the head (10) through the power connection unit (415).

[0246] The third switch (437) may be composed of a rectifier diode or a field effect transistor (FET).

[0247] FIG. 10 is a flowchart explaining an operating method of a display device according to the embodiments of FIGS. 8 and 9.

[0248] The controller (170) of the display device (1-2) can determine whether an external power source is connected to the head (10) (S1001).

[0249] If the controller (170) of the display device (1-2) determines that an external power source is connected to the head (10), it can turn off the first switch (417) and the third switch (437) and turn on the second switch (417) (S1003).

[0250] Accordingly, external power input through the head connection part (410) can be supplied to components of the head (10) or the stand (20, 30, 40, 50).

[0251] If the controller (170) of the display device (1-2) determines that an external power source is not connected to the head (10), it can determine whether an external power source is connected to the stand (20, 30, 40, 50) (S1005), and if an external power source is connected to the stand (20, 30, 40, 50), it can turn on the first switch (417) and the third switch (437) and turn off the second switch (417) (S1007).

[0252] Accordingly, external power input through the stand connection part (430) can be supplied to the head (10) through the functional part (800) and power connector (415) via the third switch (437).

[0253] FIG. 11 is a drawing illustrating a process of supplying power to a head or head battery through a stand battery when an external power source is not connected to the head and stand according to one embodiment of the present disclosure.

[0254] Referring to FIG. 11, the controller (170) can detect that the head (10) is connected to the stand (20, 30, 40, 50) while the head (10) and the stand (20, 30, 40, 50) are separated (S1101).

[0255] The controller (170) can determine whether the head (10) is connected to the stand (20, 30, 40, 50) via the power connector (415). The power connector (415) may include a pogo pin. When the controller (170) receives an electric signal via the pogo pin provided in the power connector (415), it can determine that the head (10) is connected to the stand (20, 30, 40, 50).

[0256] The controller (170) detects that the head (10) is connected to the stand (20, 30, 40, 50) and that no external power source is connected to each of the head (10) and the stand (20, 30, 40, 50), and can supply power charged in the stand battery (433) to the head (10) or the head battery (411) (S1103).

[0257] The controller (170) can turn on the third switch (437), turn off the second switch (419), and turn on the first switch (417) to supply power to the head (10) or the head battery (411) via the stand battery (433) when no external power source is connected to each of the head (10) and the stand (20, 30, 40, 50) and the head (10) is connected to the stand (20, 30, 40, 50). Accordingly, power charged in the stand battery (433) can be supplied to the head (10) or the head battery (411).

[0258] The controller (170) can supply power to the head (10) or the head battery (411) through the stand battery (433) when the head (10) is connected to the stand (20, 30, 40, 50) while no external power source is connected to each of the head (10) and the stand (20, 30, 40, 50), and the charge amount of the head battery (411) is less than a preset charge amount or the charge amount of the head battery (411) is less than the charge amount of the stand battery (433).

[0259] The controller (170) can control the operation of the stand power board (435), the first switch (417), the second switch (419) and the third switch (437) to supply power to the head (10) or the head battery (411) through the stand battery (433).

[0260] In this way, according to an embodiment of the present disclosure, when the head (10) is used in a format such as a tablet device and the head battery (411) provided in the head (10) is discharged, the user can supply power to the head (10) or charge the head battery (411) through the stand battery (433) by attaching the stand (20, 30, 40, 50) to the head (10).

[0261] Accordingly, the user can continuously use the head (10) without interruption of use due to discharge of the head battery (411) simply by connecting the head and stand, thereby improving the user's convenience in using the device.

[0262] According to one embodiment of the present invention, the above-described method can be implemented as processor-readable code on a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices.

[0263] The display device described above is not limited to the configuration and method of the embodiments described above, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims

1. In the display device, A stand having a stand battery; and A head supported by the above stand, comprising a display, a head battery and a power connector for electrical connection with the stand, The above head Further comprising a controller that controls charging of the head battery and the stand battery based on the power connection status of the head, the power connection status of the stand, the charging status of the head battery, and the charging status of the stand battery. Display device.

2. In paragraph 1, The above controller If an external power source is connected to the head, an external power source is not connected to the stand, and a battery with a charge level below a certain percentage exists, the battery is charged first through the power supplied through the head. Display device.

3. In paragraph 1, The above controller When an external power source is connected to the head, an external power source is not connected to the stand, and the charge status of each of the head battery and the stand battery is below a certain percentage, the head battery is charged first through the power supplied through the head. Display device.

4. In paragraph 1, The above controller When an external power source is connected to the head and an external power source is not connected to the stand, and the state of charge of each of the head battery and the stand battery exceeds a certain percentage, the head battery is charged first through the power supplied through the head. Display device.

5. In paragraph 1, The above controller If the head is not connected to an external power source, the stand is connected to an external power source, and there is a battery with a charge level below a certain percentage, the battery is charged first through the power supplied through the stand. Display device.

6. In paragraph 1, The above controller When an external power source is not connected to the head, an external power source is connected to the stand, and the charge status of each of the head battery and the stand battery is below a certain percentage, the head battery is charged first through the power supplied through the stand. Display device.

7. In paragraph 1, The above controller When an external power source is not connected to the head, an external power source is connected to the stand, and the charge status of each of the head battery and the stand battery exceeds a certain percentage, the head battery is charged first through the power supplied through the stand. Display device.

8. In paragraph 1, The above head A head power board that controls charging or discharging of the above head battery; A first switch, one end of which is connected to the power connector, and the other end of which is connected to the head power board; and A second switch, one end of which is connected to the head power board, and the other end of which is connected to the power connector; further comprising: The above stand A stand power board that controls charging or discharging of the above stand battery; and A third switch, one end of which is connected to the stand battery, and the other end of which is connected to the power connector (415); Display device.

9. In paragraph 8, The above controller When an external power source is connected to the head, an external power source is not connected to the stand, and the charge status of each of the head battery and the stand battery is below a certain percentage, the first switch, the second switch, and the third switch are turned off. Display device.

10. In paragraph 8, The above controller When an external power source is connected to the head, an external power source is not connected to the stand, the state of charge of the head battery exceeds a certain percentage, and the state of charge of the stand battery is below the certain percentage, the second switch is turned on, and the first switch and the third switch are turned off. Display device.

11. In paragraph 8, The above controller When the head is not connected to an external power source, the stand is connected to an external power source, and the charge status of each of the head battery and the stand battery is below a certain percentage, the first switch is turned on, and the second switch and the third switch are turned off. Display device.

12. In paragraph 8, The above controller When the external power is not connected to the head, the external power is connected to the stand, the state of charge of the head battery exceeds a certain percentage, and the state of charge of the stand battery is below the certain percentage, the first switch, the second switch, and the third switch are turned off. Display device.

13. In paragraph 8, The above controller When the head is not connected to an external power source, the stand is connected to an external power source, the head battery is below a certain percentage, and the stand battery is above a certain percentage, the first switch is turned on and the second switch and the third switch are turned off. Display device.

14. In paragraph 8, The capacity of the above head battery is greater than the capacity of the above stand battery. Display device.

15. In paragraph 1, The above head and stand are detachable, The above controller When the head and the stand are separated and the head is detected to be connected to the stand, and when no external power source is connected to the head and the stand, power is supplied to the head or the head battery through the stand battery. Display device.

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