Display device and method of operating the same

Abstract

Disclosed are a display device and a method of operating the same. An organic light emitting diode display device: calculates an accumulated current of each of a plurality of pixels; calculates a consumed current consumed by each of the plurality of pixels during a reproduction period of an image; estimates an expected deterioration time of each pixel based on a difference between the accumulated current and the consumed current; and causes a display unit to operate in a normal output mode as an image output mode when a number of pixels in which burn-in is expected among the plurality of pixels based on the estimated expected deterioration time is less than a preset number.

Description

Technical Field

[0001] This disclosure relates to display devices, and more specifically, to an organic light-emitting diode (OLED) display device. Background Technology

[0002] Recently, various types of display devices have been provided. Among them, organic light-emitting diode display devices (hereinafter referred to as "OLED display devices") are frequently used.

[0003] OLED displays are display devices that use organic light-emitting elements. Because organic light-emitting elements are self-emissive, OLED displays have the advantages of lower power consumption and thinner profiles compared to liquid crystal displays, which require backlighting. Additionally, OLED displays offer advantages such as wider viewing angles and faster response times.

[0004] Non-fungible tokens (NFTs) are virtual assets that cannot be replaced by other tokens on a blockchain. NFTs are used in blockchain-based distributed networks as a means of recording the copyright and ownership of digital assets such as games and artwork.

[0005] NFT Art Gallery is a platform service that allows users to enjoy and trade various media and content such as art, design, sports, and games on OLED TVs. Burn-in may occur if still images are reproduced for extended periods. Summary of the Invention

[0006] The purpose of this disclosure is to provide an OLED display device that can prevent burn-in during image reproduction.

[0007] According to embodiments of the present disclosure, an organic light-emitting diode display device can calculate the cumulative current of each of a plurality of pixels, calculate the consumed current of each of the plurality of pixels during an image reproduction period, estimate the expected degradation time of each pixel based on the difference between the cumulative current and the consumed current, and when the number of pixels among the plurality of pixels expected to burn-in based on the estimated expected degradation time is less than a preset number, the display unit can be operated as an image output mode in a normal output mode.

[0008] According to embodiments of this disclosure, pixel burn-in during image reproduction can be effectively prevented. Therefore, the lifespan of the display device can be increased, and users will not experience discomfort due to burn-in when viewing images. Attached Figure Description

[0009] Figure 1 This is a diagram illustrating a display device according to an embodiment of the present disclosure.

[0010] Figure 2 It is shown Figure 1A block diagram showing the configuration of the display device.

[0011] Figure 3 yes Figure 2 An example of an internal block diagram of the control unit.

[0012] Figure 4A It is shown Figure 2 A diagram illustrating the control method of the remote control device.

[0013] Figure 4B yes Figure 2 Internal block diagram of the remote control device.

[0014] Figure 5 yes Figure 2 The internal block diagram of the display unit.

[0015] Figures 6A to 6B yes Figure 5 The illustration is referenced in the description of the organic light-emitting panel.

[0016] Figure 7 This is a flowchart describing a method of operating a display device according to an embodiment of the present disclosure.

[0017] Figure 8 This is a diagram illustrating a method for reproducing non-fungible token (NFT) content according to an embodiment of this disclosure.

[0018] Figure 9 This is a flowchart describing a method of operating a display device according to another embodiment of the present disclosure.

[0019] Figure 10 It is a graph used to describe the correspondence between a matching RGB dataset and current consumption according to an embodiment of the present disclosure, wherein the RGB dataset is the result of a calculation of the product of RGB data values ​​and the reproduction time of NFT content.

[0020] Figure 11 It is a graph used to describe the correspondence between the difference between the cumulative estimated current and the reference current consumption and the expected degradation time, according to embodiments of the present disclosure.

[0021] Figure 12 This is a diagram illustrating a pop-up window that notifies a reduction in the playback time of NFT content in burn-in prevention mode according to an embodiment of the present disclosure. Detailed Implementation

[0022] The present disclosure will now be described in more detail with reference to the accompanying drawings.

[0023] Figure 1 This is a diagram illustrating a display device according to an embodiment of the present disclosure.

[0024] Referring to the accompanying drawings, the display device 100 may include a display unit 180.

[0025] Furthermore, the display unit 180 can be implemented using any of various panels. For example, the display unit 180 can be any of a liquid crystal display panel (LCD panel), an organic light-emitting diode panel (OLED panel), and an inorganic light-emitting diode panel (LED panel).

[0026] In this disclosure, it is assumed that the display unit 180 includes an organic light-emitting diode panel (OLED panel). It should be noted that this is merely exemplary, and the display unit 180 may include panels other than an organic light-emitting diode panel (OLED panel).

[0027] also, Figure 1 The display device 100 can be a monitor, TV, tablet PC or mobile terminal.

[0028] Figure 2 It is shown Figure 1 A block diagram showing the configuration of the display device.

[0029] Reference Figure 2 The display device 100 may include a broadcast receiving unit 130, an external device interface unit 135, a storage unit 140, a user input interface unit 150, a control unit 170, a wireless communication unit 173, a display unit 180, an audio output unit 185, and a power supply unit 190.

[0030] The broadcast receiving unit 130 may include a tuner 131, a demodulator 132, and a network interface unit 133.

[0031] Tuner 131 can select a specific broadcast channel according to a channel selection command. Tuner 131 can receive the broadcast signal of the selected specific broadcast channel.

[0032] The demodulator 132 can separate the received broadcast signal into video signals, audio signals and data signals related to the broadcast program, and restore the separated video signals, audio signals and data signals into an output format.

[0033] The network interface unit 133 provides an interface for connecting the display device 100 to a wired / wireless network, including the Internet. The network interface unit 133 can send or receive data from other users or other electronic devices via the connected network or another network linked to the connected network.

[0034] The network interface unit 133 can access a predetermined webpage via a connected network or another network linked to a connected network. That is, it can access the predetermined webpage via the network and send data to or receive data from the corresponding server.

[0035] In addition, the network interface unit 133 can receive content or data provided by content providers or network operators. That is, the network interface unit 133 can receive content such as movies, advertisements, games, VOD, broadcast signals and related information provided by content providers or network providers through the network.

[0036] In addition, the network interface unit 133 can receive firmware update information and update files provided by the network operator, and can send data to the Internet or content providers or network operators.

[0037] The network interface unit 133 can select and receive desired applications from applications that are publicly available via the network.

[0038] The external device interface unit 135 can receive applications or application lists from adjacent external devices and send them to the control unit 170 or the storage unit 140.

[0039] External device interface unit 135 provides a connection path between display device 100 and external devices. External device interface unit 135 can receive one or more video and audio outputs from external devices wirelessly or wiredly connected to display device 100 and transmit them to control unit 170. External device interface unit 135 may include multiple external input terminals. These external input terminals may include RGB terminals, one or more High Definition Multimedia Interface (HDMI) terminals, and component terminals.

[0040] Video signals from external devices input through the external device interface unit 135 can be output through the display unit 180. Audio signals from external devices input through the external device interface unit 135 can be output through the audio output unit 185.

[0041] The external device that can be connected to the external device interface unit 135 can be any of a set-top box, Blu-ray player, DVD player, game console, soundbar, smartphone, PC, USB storage device, and home theater system, but this is just an example.

[0042] Additionally, a portion of the content data stored in the display device 100 may be sent to a selected user or selected electronic device among other users or other electronic devices pre-registered in the display device 100.

[0043] The storage unit 140 can store programs for signal processing and control of the control unit 170, and can also store video, audio or data signals that have been processed.

[0044] In addition, the storage unit 140 can perform the function of temporarily storing video, audio or data signals input from the external device interface unit 135 or the network interface unit 133, and store information about a predetermined video through the channel storage function.

[0045] Storage unit 140 can store applications or application lists input from external device interface unit 135 or network interface unit 133.

[0046] The display device 100 can play back content files (moving image files, still image files, music files, document files, application files, etc.) stored in the storage unit 140 and provide them to the user.

[0047] User input interface unit 150 can send user-input signals to control unit 170 or send signals from control unit 170 to user. For example, user input interface unit 150 can receive and process control signals such as power on / off, channel selection, and screen settings from remote control device 200 according to various communication methods such as Bluetooth communication, WB (ultra-wideband) communication, ZigBee communication, RF (radio frequency) communication, or infrared (IR) communication, or can perform processing to send control signals from control unit 170 to remote control device 200.

[0048] Additionally, the user input interface unit 150 can send control signals input from local keys such as the power button, channel key, volume key, and setting value (not shown) to the control unit 170.

[0049] The video signal processed by the control unit 170 can be input to the display unit 180 and displayed as a video signal corresponding to the video signal. Additionally, the video signal processed by the control unit 170 can be input to an external output device via the external device interface unit 135.

[0050] The audio signal processed by the control unit 170 can be output to the audio output unit 185. In addition, the audio signal processed by the control unit 170 can be input to an external output device through the external device interface unit 135.

[0051] In addition, the control unit 170 can control the overall operation of the display device 100.

[0052] In addition, the control unit 170 can control the display device 100 according to user commands or internal programs input through the user input interface unit 150 and connect to the network to download applications, application lists, or applications desired by the user to the display device 100.

[0053] The control unit 170 allows the user to select channel information, along with the processed video or audio signals, and output them through the display unit 180 or the audio output unit 185.

[0054] Additionally, the control unit 170 can output video or audio signals through the display unit 180 or the audio output unit 185 according to a command to play back video from an external device via the user input interface unit 150. The video or audio signals are input from an external device (e.g., a camera or camcorder) via the external device interface unit 135.

[0055] Furthermore, the control unit 170 may allow the display unit 180 to display video, for example, broadcast video input via the tuner 131, external input video input via the external device interface unit 135, video input via the network interface unit, or video stored in the storage unit 140 may be displayed on the display unit 180. In this case, the video displayed on the display unit 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

[0056] In addition, the control unit 170 can allow playback of content stored in the display device 100, received broadcast content, or externally input content, and the content can be in various forms such as broadcast video, externally input video, audio files, still images, accessed web pages, and document files.

[0057] The wireless communication unit 173 can communicate with external devices via wired or wireless communication. The wireless communication unit 173 can perform short-range communication with external devices. Therefore, the wireless communication unit 173 can support the use of Bluetooth. TM The wireless communication unit 173 can support short-range communication between the display device 100 and the wireless communication system, between the display device 100 and another display device 100, or between the display device 100 and the network where the display device 100 (or an external server) is located, via a wireless local area network. The wireless local area network can be a wireless personal area network (WLAN).

[0058] Here, the other display device 100 may be a wearable device (e.g., a smartwatch, smart glasses, or head-mounted display (HMD), or a mobile terminal such as a smartphone) capable of exchanging data (or communicating) with the display device 100 according to this disclosure. The wireless communication unit 173 may detect (or identify) wearable devices capable of communicating around the display device 100.

[0059] Furthermore, when the detected wearable device is an authentication device communicating with the display device 100 according to this disclosure, the control unit 170 can transmit at least a portion of the data processed by the display device 100 to the wearable device via the wireless communication unit 173. Therefore, the user of the wearable device can use the data processed by the display device 100 through the wearable device.

[0060] The display unit 180 can convert video signals, data signals, or OSD signals processed by the control unit 170 or video signals or data signals received from the external device interface unit 135 into R, G, and B signals, and generate drive signals.

[0061] also, Figure 2 The display device 100 shown is only an embodiment of this disclosure. Therefore, depending on the specifications of the actual implemented display device 100, some of the shown components may be integrated, added, or omitted.

[0062] That is, if necessary, two or more components can be combined into one component, or one component can be divided into two or more components. Furthermore, the functions performed in the various blocks are for describing embodiments of this disclosure, and their specific operation or apparatus does not limit the scope of this disclosure.

[0063] According to another embodiment of this disclosure, with Figure 2 The display device 100 shown is different. The display device 100 can receive video through the network interface unit 133 or the external device interface unit 135 without the tuner 131 and demodulator 132, and play back the image.

[0064] For example, the display device 100 may be divided into an image processing device (e.g., a set-top box) that receives broadcast signals or content according to various network services and a content playback device that plays back content input from the image processing device.

[0065] In this case, the operation method of the display device according to the embodiments of the present disclosure, which will be described below, can be used not only by referring to Figure 2 The described display device 100 is implemented, and can be implemented by one of an image processing device such as a separate set-top box and a content playback device including a display unit 180 and an audio output unit 185.

[0066] The audio output unit 185 can receive the signal processed by the control unit 170 and output it together with the audio.

[0067] The power supply unit 190 can supply corresponding power to the display device 100. Specifically, it can supply power to the control unit 170, which can be implemented in the form of a system-on-a-chip (SOC), the display unit 180 for video display, and the audio output unit 185 for audio output.

[0068] Specifically, the power supply unit 190 may include a converter that converts AC power to DC power and a DC / DC converter that converts the level of DC power.

[0069] The remote control device 200 can send user input to the user input interface unit 150. For this purpose, the remote control device 200 can use Bluetooth, radio frequency (RF) communication, infrared (IR) communication, ultra-wideband (UWB), ZigBee, etc. Additionally, the remote control device 200 can receive video, audio, or data signals output from the user input interface unit 150, and display or output video or audio signals via the remote control device 200.

[0070] Figure 3 yes Figure 2 An example of the internal block diagram of the controller.

[0071] Referring to the accompanying drawings, the control unit 170 according to embodiments of the present disclosure may include a demultiplexer 310, an image processing unit 320, a processor 330, an OSD generator 340, a mixer 345, a frame rate converter 350, and a formatter 360. Additionally, it may further include an audio processing unit (not shown) and a data processing unit (not shown).

[0072] Demultiplexer 310 can demultiplex the input stream. For example, when an MPEG-2TS input is received, demultiplexer 310 can demultiplex the MPEG-2TS to separate it into video, audio, and data signals. Here, the stream signal input to demultiplexer 310 can be a stream signal output from tuner 131, demodulator 132, or external device interface unit 135.

[0073] The image processing unit 320 can perform image processing on the demultiplexed video signal. To this end, the image processing unit 320 may include an image decoder 325 and a scaler 335.

[0074] The image decoder 325 can decode the demultiplexed video signal, and the scaler 335 can scale the resolution of the decoded video signal for output through the display unit 180.

[0075] The video decoder 325 can be configured with decoders for various standards. For example, it can provide MPEG-2 and H.264 decoders, 3D video decoders for color and depth images, and decoders for multi-view images.

[0076] The processor 330 can control the overall operation of the display device 100 or the control unit 170. For example, the processor 330 can control the tuner 131 to select (tune) an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

[0077] In addition, the processor 330 can control the display device 100 according to user commands or internal programs input through the user input interface unit 150.

[0078] In addition, the processor 330 can perform data transmission control with the network interface unit 133 or the external device interface unit 135.

[0079] In addition, the processor 330 can control the operation of the demultiplexer 310, the image processing unit 320 and the OSD generator 340 in the control unit 170.

[0080] OSD generator 340 can generate OSD signals based on user input or automatically. For example, based on user input signals, it can generate signals for displaying various information as graphics or text on the screen of display unit 180. The generated OSD signals may include various data such as user interface screens of display device 100, various menu screens, widgets, and icons. In addition, the generated OSD signals may include 2D objects or 3D objects.

[0081] Additionally, the OSD generator 340 can generate a pointer that can be displayed on the display unit 180 based on a pointing signal input from the remote control device 200. Specifically, this pointer can be generated by a pointing signal processing unit, and the OSD generator 340 may include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) can be set separately and not included in the OSD generator 340.

[0082] Mixer 345 can mix the OSD signal generated by OSD generator 340 with the decoded video signal processed by image processing unit 320. The mixed video signal can be provided to frame rate converter 350.

[0083] The Frame Rate Converter (FRC) 350 converts the frame rate of an input video. Alternatively, the FRC 350 can output the input video as is, without requiring a separate frame rate conversion.

[0084] On the other hand, Formatter 360 can change the format of the input video signal to the video signal to be displayed on the monitor and then output it.

[0085] Formatter 360 can change the format of video signals. For example, it can change the format of 3D video signals to any of the various 3D formats such as side-by-side format, top-bottom format, frame order format, interlaced format, checkerboard format, etc.

[0086] Furthermore, the audio processing unit (not shown) in the control unit 170 can perform audio processing on the demultiplexed audio signal. For this purpose, the audio processing unit (not shown) may include various decoders.

[0087] In addition, the audio processing unit (not shown) in the control unit 170 can handle bass, treble, volume control, etc.

[0088] The data processing unit (not shown) in control unit 170 can perform data processing on the demultiplexed data signal. For example, when the demultiplexed data signal is an encoded data signal, the demultiplexed data signal can be decoded. The encoded data signal may be electronic program guide information that includes broadcast information such as the start and end times of broadcast programs on various channels.

[0089] also, Figure 3 The block diagram of the control unit 170 shown is a block diagram of an embodiment of this disclosure. Depending on the specifications of the actual implemented control unit 170, the components in the block diagram may be integrated, added, or omitted.

[0090] Specifically, the frame converter 350 and the formatter 360 may not be located in the control unit 170, but may be set up separately or as a single module.

[0091] Figure 4A It is shown Figure 2 A diagram illustrating the control method of the remote control device.

[0092] exist Figure 4A In (a), a pointer 205 corresponding to the remote control device 200 is shown on the display unit 180.

[0093] The user can adjust the remote control device up and down, left and right by 200 degrees. Figure 4A (b) and before and after ( Figure 4A (c) Movement or rotation. The pointer 205 displayed on the display unit 180 of the display device can correspond to the movement of the remote control device 200. As shown in the figure, since the corresponding pointer 205 moves and is displayed according to the movement in 3D space, the remote control device 200 can be called a spatial remote control or a 3D pointing device.

[0094] exist Figure 4AIn (b), it is shown that when the user moves the remote control 200 to the left, the pointer 205 displayed on the display unit 180 of the display device moves to the left accordingly.

[0095] Information about the movement of the remote control device 200, detected by the sensors of the remote control device 200, is sent to the display device. The display device can calculate the coordinates of the pointer 205 based on the information about the movement of the remote control device 200. The display device can display the pointer 205 to correspond to the calculated coordinates.

[0096] exist Figure 4A In (c), it is shown that the user moves the remote control 200 away from the display unit 180 while pressing a specific button on the remote control 200. Therefore, the selected area in the display unit 180 corresponding to the pointer 205 can be zoomed in and enlarged. Conversely, when the user moves the remote control 200 closer to the display unit 180, the selected area in the display unit 180 corresponding to the pointer 205 can be zoomed out and reduced in size. On the other hand, when the remote control 200 moves away from the display unit 180, the selected area can be zoomed out, and when the remote control 200 moves closer to the display unit 180, the selected area can be zoomed in.

[0097] Furthermore, when a specific button in the remote control 200 is pressed, the recognition of upward, downward, leftward, or rightward movement is excluded. That is, when the remote control 200 moves away from or towards the display unit 180, upward, downward, leftward, or rightward movement is not recognized; only forward and backward movement is recognized. When a specific button in the remote control 200 is not pressed, only the pointer 205 moves according to the upward, downward, leftward, or rightward movement of the remote control 200.

[0098] Furthermore, the moving speed or direction of the pointer 205 can correspond to the moving speed or direction of the remote control device 200.

[0099] Figure 4B yes Figure 2 Internal block diagram of the remote control device.

[0100] Referring to the accompanying drawings, the remote control device 200 may include a wireless communication unit 420, a user input unit 430, a sensor unit 440, an output unit 450, a power supply unit 460, a storage unit 470, and a control unit 480.

[0101] The wireless communication unit 420 can transmit signals to and receive signals from any of the display devices according to the embodiments of the present disclosure described above. Among the display devices according to the embodiments of the present disclosure, a display device 100 will be described as an example.

[0102] In this embodiment, the remote control device 200 may include an RF module 421 capable of transmitting signals to and receiving signals from the display device 100 according to an RF communication standard. Additionally, the remote control device 200 may include an IR module 423 capable of transmitting signals to and receiving signals from the display device 100 according to an IR communication standard.

[0103] In this embodiment, the remote control device 200 sends a signal containing information about the movement of the remote control device 200 to the display device 100 via the RF module 421.

[0104] Additionally, the remote control device 200 can receive signals sent by the display device 100 via the RF module 421. Furthermore, if necessary, it can send commands to the display device 100 via the IR module 423 regarding power on / off, channel change, volume adjustment, etc.

[0105] The user input unit 430 may include a keypad, buttons, a touchpad, or a touchscreen. The user can input commands related to the display device 100 to the remote control device 200 by operating the user input unit 430. When the user input unit 430 includes hard keys, the user can input commands related to the display device 100 to the remote control device 200 by pressing the hard keys. When the user input unit 430 includes a touchscreen, the user can input commands related to the display device 100 to the remote control device 200 by touching the soft keys on the touchscreen. Additionally, the user input unit 430 may include various types of input methods operable by the user, such as scroll keys or tap keys; this embodiment does not limit the scope of this disclosure.

[0106] The sensor unit 440 may include a gyroscope sensor 441 or an accelerometer sensor 443. The gyroscope sensor 441 can sense information about the movement of the remote control device 200.

[0107] For example, the gyroscope sensor 441 can sense information about the operation of the remote control device 200 based on the x, y, and z axes. The accelerometer sensor 443 can sense information such as the moving speed of the remote control device 200. Furthermore, a distance measurement sensor can be provided to sense the distance to the display unit 180.

[0108] The output unit 450 can output video or audio signals corresponding to the operation of the user input unit 430 or signals sent from the display device 100. The user can use the output unit 450 to identify whether the user input unit 430 has been operated or whether the display device 100 has been controlled.

[0109] For example, when the user input unit 430 is operated or signals are sent and received through the wireless communication unit 420, the output unit 450 may include an LED module 451 that emits light, a vibration module 453 that generates vibration, a sound output module 455 that outputs sound, or a display module 457 that outputs video.

[0110] The power supply unit 460 supplies power to the remote control device 200. The power supply unit 460 can reduce power consumption by stopping power supply when the remote control device 200 has not moved for a predetermined time. The power supply unit 460 can restart power supply when a predetermined key in the remote control device 200 is activated.

[0111] Storage unit 470 can store various types of programs and application data required for the control or operation of remote control device 200. When remote control device 200 wirelessly transmits and receives signals through display device 100 and RF module 421, remote control device 200 and display device 100 transmit and receive signals through a predetermined frequency band. Control unit 480 of remote control device 200 can store and reference information in storage unit 470 regarding the frequency bands on which signals can be wirelessly transmitted to and received from display device 100 paired with remote control device 200.

[0112] The control unit 480 can control all matters related to the control of the remote control device 200. The control unit 480 can send signals corresponding to the operation of predetermined keys in the user input unit 430 or signals corresponding to the movement of the remote control device 200 sensed by the sensor unit 440 via the wireless communication unit 420.

[0113] The user input interface unit 150 of the display device 100 may include: a wireless communication unit 411, which is capable of wirelessly sending signals to and receiving signals from the remote control device 200; and a coordinate value calculation unit 415, which is capable of calculating the coordinate values ​​of a pointer corresponding to the operation of the remote control device 200.

[0114] The user input interface unit 150 can wirelessly send signals to and receive signals from the remote control device 200 via the RF module 412. Additionally, it can receive signals sent by the remote control device 200 according to the IR communication standard via the IR module 413.

[0115] The coordinate calculation unit 415 can correct hand tremors or errors based on the signal received by the wireless communication unit 411 corresponding to the operation of the remote control device 200, and calculate the coordinate values ​​(x, y) of the pointer 205 to be displayed on the display unit 180.

[0116] The transmission signal of the remote control device 200 input to the display device 100 through the user input interface unit 150 can be sent to the control unit 170 of the display device 100. The control unit 170 can determine information about the operation and key operation of the remote control device 200 based on the signal sent by the remote control device 200, and control the display device 100 in response.

[0117] As another example, the remote control device 200 can calculate the pointer coordinate values ​​corresponding to the operation and output them to the user input interface unit 150 of the display device 100. In this case, the user input interface unit 150 of the display device 100 can send information about the received pointer coordinate values ​​to the control unit 170 without separate processing to correct for hand tremors or errors.

[0118] Alternatively, as another example, unlike the attached figure, the coordinate value calculation unit 415 may be located in the control unit 170 instead of the user input interface unit 150.

[0119] Figure 5 yes Figure 2 The internal block diagram of the display unit.

[0120] Referring to the accompanying drawings, the display unit 180 based on the organic light-emitting panel may include a panel 210, a first interface unit 230, a second interface unit 231, a timing controller 232, a gating drive unit 234, a data drive unit 236, a memory 240, a processor 270, a power supply unit 290, etc.

[0121] The display unit 180 can receive a video signal Vd, a first DC current V1, and a second DC current V2, and display a predetermined video based on the video signal Vd.

[0122] In addition, the first interface unit 230 in the display unit 180 can receive video signal Vd and first DC power V1 from the control unit 170.

[0123] Here, the first DC power supply V1 can be used to operate the power supply unit 290 and the timing controller 232 in the display unit 180.

[0124] Next, the second interface unit 231 can receive a second DC power supply V2 from the external power supply unit 190. Furthermore, the second DC power supply V2 can be input to the data drive unit 236 in the display unit 180.

[0125] The timing controller 232 can output a data drive signal Sda and a gating drive signal Sga based on the video signal Vd.

[0126] For example, when the first interface unit 230 converts the input video signal Vd and outputs the converted video signal va1, the timing controller 232 can output the data drive signal Sda and the strobe drive signal Sga based on the converted video signal va1.

[0127] In addition to the video signal Vd, the timing controller 232 can also receive control signals, vertical synchronization signals Vsync, etc. from the control unit 170.

[0128] In addition to the video signal Vd, the timing controller 232 can output a gating drive signal Sga for the operation of the gating drive unit 234 and a data drive signal Sda for the operation of the data drive unit 236 based on control signals, vertical synchronization signals Vsync, etc.

[0129] In this case, when panel 210 includes RGBW sub-pixels, the data drive signal Sda can be a data drive signal used to drive the RGBW sub-pixels.

[0130] In addition, the timing controller 232 can further output a control signal Cs to the gating drive unit 234.

[0131] Based on the gating drive signal Sga and the data drive signal Sda from the timing controller 232, the gating drive unit 234 and the data drive unit 236 can supply scan signals and video signals to the panel 210 through the gating line GL and the data line DL, respectively. Therefore, the panel 210 can display a predetermined video.

[0132] In addition, panel 210 may include an organic light-emitting layer and may be arranged such that in each pixel corresponding to the organic light-emitting layer, multiple gate lines GL intersect with multiple data lines DL in a matrix form to display video.

[0133] In addition, the data drive unit 236 can output data signals to the panel 210 based on the second DC power supply V2 from the second interface unit 231.

[0134] The power supply unit 290 can supply power of various levels to the gating drive unit 234, the data drive unit 236, the timing controller 232, etc.

[0135] The processor 270 can perform various controls on the display unit 180. For example, it can control the gating drive unit 234, the data drive unit 236, the timing controller 232, etc.

[0136] Figures 6A to 6B yes Figure 5 The illustration is referenced in the description of the organic light-emitting panel.

[0137] first, Figure 6AThis is a diagram showing the pixels in panel 210. Panel 210 may be an organic light-emitting panel.

[0138] Referring to the accompanying drawings, panel 210 may include multiple scan lines (Scan 1 to Scan n) and multiple data lines (R1, G1, B1, W1 to Rm, Gm, Bm and Wm) intersecting the scan lines.

[0139] Furthermore, the pixels are defined at the intersection of scan lines and data lines in panel 210. The accompanying drawings show pixels with RGBW sub-pixels SPr1, SPg1, SPb1, and SPw1.

[0140] exist Figure 6A Although the diagram shows RGBW subpixels set within a single pixel, RGB subpixels can be set within a single pixel. That is, it is not limited to the arrangement of pixel elements.

[0141] Figure 6B Show Figure 6A The circuitry of sub-pixels within the pixels of an organic light-emitting panel.

[0142] Referring to the accompanying drawings, the organic light-emitting sub-pixel circuit CRTm may include a scan switch element SW1, a storage capacitor Cst, a drive switch element SW2, and an organic light-emitting layer OLED as an active element.

[0143] Scan switch element SW1 can be connected to the scan line at its gate terminal and can be turned on according to the input scan signal Vscan. When scan switch element SW1 is turned on, the input data signal Vdata can be transmitted to the gate terminal of drive switch element SW2 or a terminal of storage capacitor Cst.

[0144] The storage capacitor Cst can be formed between the gate terminal and the source terminal of the driving switching element SW2, and stores a predetermined difference between the level of the data signal sent to one terminal of the storage capacitor Cst and the level of the DC current Vdd transmitted to the other terminal of the storage capacitor Cst.

[0145] For example, when the data signal has different levels according to the pulse amplitude modulation (PAM) method, the power level stored in the storage capacitor Cst can vary according to the difference in the level of the data signal Vdata.

[0146] As another example, when the data signal has different pulse widths according to the pulse width modulation (PWM) method, the power level stored in the storage capacitor Cst can vary according to the difference in the pulse width of the data signal Vdata.

[0147] The driving switch element SW2 can be turned on according to the power level stored in the storage capacitor Cst. When the driving switch element SW2 is turned on, a driving current IOLED proportional to the stored power level flows through the organic light-emitting layer OLED. Therefore, the organic light-emitting layer OLED can perform light-emitting operation.

[0148] The organic light-emitting layer (OLED) includes an RGBW light-emitting layer (EML) corresponding to the sub-pixel, and may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), and may also include a hole blocking layer.

[0149] On the other hand, while subpixels can emit white light within an organic light-emitting layer (OLED), separate color filters are provided for green, red, and blue subpixels to achieve the desired color. Specifically, green, red, and blue color filters are provided for green, red, and blue subpixels, respectively. Furthermore, since white subpixels emit white light, a separate color filter is not required.

[0150] On the other hand, although the p-type MOSFET is shown as scan switching element SW1 and drive switching element SW2 in the figure, n-type MOSFET or other switching elements such as JFET, IGBT or SiC can be used.

[0151] Figure 7 This is a flowchart describing a method of operating a display device according to an embodiment of the present disclosure.

[0152] The image output modes of the display unit 180 may include normal output mode, burn-in prevention mode, and standby mode.

[0153] The normal output mode can be a mode in which multiple pixels of the panel 210 constituting the display unit 180 output light in a normal state.

[0154] Burn-in prevention mode is a mode that outputs a lower brightness than the normal output mode. In other words, compared to the normal output mode, burn-in prevention mode improves burn-in performance by outputting a lower quality image.

[0155] The standby mode can be a sleep mode that supplies only minimum power to the display unit 180. In standby mode, the display unit 180 can output a black image or a standby screen.

[0156] Hereinafter, it is assumed that the display device 100 displays content on the display unit 180. The content may be an image or non-fungible token (NFT) content.

[0157] NFTs can refer to virtual assets that cannot be replaced by other tokens on a blockchain. NFTs are used in blockchain-based distributed networks as a means of recording the copyright and ownership of digital assets such as games and artwork.

[0158] The control unit 170 of the display device 100 obtains situation information (S701).

[0159] According to the implementation, the situation information may include one or more of the following: information about the presence of a user, the usage time of the display panel 210, and information about the surrounding environment.

[0160] The control unit 170 can obtain information about the presence of a viewer through various sensors such as infrared sensors, distance sensors, and cameras.

[0161] The control unit 170 can obtain the usage time of each of the plurality of pixels constituting the display panel 210. The control unit 170 can calculate the cumulative current flowing through each pixel and obtain the usage time of the pixel based on the cumulative current. The control unit 170 can determine that the usage time of the corresponding pixel increases as the amount of cumulative current increases, and can determine that the usage time of the pixel decreases as the amount of cumulative current decreases.

[0162] The control unit 170 can store the correspondence between the cumulative current flowing through the pixel and the usage time in the memory 240.

[0163] The control unit 170 determines, based on the obtained situation information, whether there is a viewer in front of the display unit 180 (S703).

[0164] The display device 100 may include an infrared sensor (not shown), a distance sensor (not shown), and a camera (not shown).

[0165] The control unit 170 may use at least one of an infrared sensor, a distance sensor, or a camera to obtain information about whether a viewer is in front of the display unit 180.

[0166] For example, an infrared sensor can emit infrared light and detect objects based on the reflected infrared light.

[0167] The control unit 170 can determine the shape of an object detected from reflected infrared light. When the determined shape is a human shape, the control unit 170 can determine that a viewer is present.

[0168] In another embodiment, the control unit 170 may determine the presence of a viewer based on images captured by the camera. When the captured image includes an image of a viewer's face, the control unit 170 may determine the presence of a viewer.

[0169] In another embodiment, the control unit 170 can determine that there is a viewer in front of the display unit 180 only when the viewer is within a preset distance from the display device 100.

[0170] That is, the control unit 170 can determine the presence of a viewer only when there is a viewer in front of the display device 100 and within a predetermined distance from the display device 100.

[0171] When the control unit 170 determines that there is no viewer in front of the display unit 180, the control unit 170 causes the display unit 180 to operate in standby mode as an image output mode (S705).

[0172] When the control unit 170 determines that there is no viewer in front of the display unit 180, the control unit 170 can change the image output mode to standby mode to prevent power consumption.

[0173] In standby mode, the display unit 180 may not output any image, or it may display a standby screen corresponding to the minimum output of multiple pixels.

[0174] When the control unit 170 determines that there is a viewer in front of the display unit 180, the control unit 170 determines whether the viewer is viewing an image displayed on the display unit 180 (S707).

[0175] The control unit 170 can determine the image viewing status based on the viewer's image obtained through the camera.

[0176] The control unit 170 can extract a viewer's facial image from a captured viewer image using known facial recognition technology. The control unit 170 can extract an eye image from the extracted viewer's facial image and obtain the viewer's gaze direction from the extracted eye image.

[0177] When the viewer's gaze is directed towards the front of the display unit 180, the control unit 170 can determine that the viewer is viewing an image.

[0178] If the viewer's gaze is not directed towards the front of the display unit 180 for a predetermined time, the control unit 170 can determine that the viewer is not watching the image.

[0179] When the control unit 170 determines that the viewer is viewing the image, the control unit 170 causes the display unit 180 to operate in normal output mode as image output mode (S709).

[0180] In one embodiment, in normal output mode, the multiple pixels constituting the display panel 210 can output light in a normal state for outputting images.

[0181] When the control unit 170 determines that the viewer is not viewing the image, the control unit 170 causes the display unit 180 to operate in burn-in prevention mode as the image output mode (S711).

[0182] When the viewer is not viewing the image, the control unit 170 can change the image output mode to a burn-in prevention mode to prevent the panel 210 of the display unit 180 from deteriorating.

[0183] That is, when the control unit 170 determines that the viewer is not viewing the image, the control unit 170 can switch the image output mode from the normal output mode to the burn-in prevention mode.

[0184] In burn-in prevention mode, control unit 170 can control the operation of control panel 210 to adjust the image brightness. Control unit 170 can control the operation of control panel 210 to output a second brightness that is lower than the first brightness output in image output mode.

[0185] For this purpose, the control unit 170 can perform control to reduce the current flowing through each of the plurality of pixels constituting the panel 210.

[0186] In burn-in prevention mode, the control unit 170 can sequentially turn each of multiple pixels on or off according to a predetermined time period.

[0187] In one implementation, in burn-in prevention mode, the control unit 170 can turn on half of the pixels that make up the panel 210 and turn off the other half.

[0188] In another embodiment, in burn-in prevention mode, the control unit 170 can sequentially turn on / off pixels that have a usage time equal to or greater than a preset time among all pixels constituting the panel 210.

[0189] In burn-in prevention mode, the control unit 170 can operate such that pixels with usage time less than a preset time output light in normal state, and pixels with usage time equal to or greater than the preset time are turned on / off sequentially according to a predetermined time period.

[0190] Figure 8 This is a diagram illustrating a method for reproducing NFT content according to an embodiment of the present disclosure.

[0191] Reference Figure 8 The display unit 180 can reproduce NFT content 800.

[0192] The control unit 170 can display a playback setting window 810 for setting the playback of NFT content 800.

[0193] The playback settings window 810 can be a window used to set the playback start time and playback end time of the NFT content 800.

[0194] Users can freely set the start and end times of the reproduction of NFT content 800 through the reproduction settings window 810 (similar to alarm settings).

[0195] In addition, the control unit 170 can display a list 830 of NFT properties, including multiple NFT contents owned by the user, on the display unit 180 in the form of thumbnails.

[0196] Users can purchase NFTs through the NFT marketplace and access information about the purchased NFTs through the blockchain platform.

[0197] Multiple NFT contents can be displayed sequentially on the display unit 180 by sliding.

[0198] according to Figure 7 In this implementation, the control unit 170 can determine the image output mode of the display unit 180 based on whether a viewer is present and, if so, the viewer's gaze direction. The control unit 170 can then output NFT content 800 through the display unit 180 according to the determined image output mode.

[0199] In another embodiment, when the image output mode is the normal output mode, the control unit 170 can adjust the brightness or luminance of the display unit 180 based on the ambient illuminance obtained by an illuminance sensor (not shown). For example, when the measured ambient illuminance is greater than the brightness of the NFT content 800, the control unit 170 can control the display unit 180 to increase the output brightness of the NFT content 800.

[0200] Conversely, when the measured ambient illuminance is less than the brightness of the NFT content 800, the control unit 170 can control the display unit 180 to reduce the output brightness of the NFT content 800 based on the ambient illuminance.

[0201] As described above, according to embodiments of the present disclosure, the brightness of the content is adjusted to match the ambient illuminance of the display device 100, thereby providing the user with an optimal viewing environment.

[0202] Figure 9 This is a flowchart describing a method of operating a display device according to another embodiment of the present disclosure.

[0203] Reference Figure 9 The control unit 170 of the display device 100 calculates the cumulative current of each pixel constituting the panel 210 (S901).

[0204] The control unit 170 can measure the amount of current supplied to each pixel from the past to the present, and can calculate the cumulative current of the pixel by multiplying the measured current amount by the period during which the pixel is turned on.

[0205] A large cumulative current indicates a longer pixel lifespan, while a small cumulative current indicates a shorter pixel lifespan.

[0206] The control unit 170 can store the accumulated current of each pixel in the memory 240. The control unit 170 can periodically store the accumulated current of each pixel in the memory 240.

[0207] The control unit 170 calculates the current consumption of each pixel for the content to be output by the display unit 180 (S903).

[0208] The control unit 170 can use information about the content output through the panel 210 of the display unit 180 to calculate the expected current consumption of each pixel.

[0209] Information about the content may include the RGB data values ​​of the NFT content for each pixel and the time period during which the NFT content was reproduced.

[0210] As above Figure 8 As described in the implementation, the playback period of NFT content can be obtained by user input entered on the playback setting window 810.

[0211] Since NFT content is an image, the RGB data values ​​of each pixel can be fixed.

[0212] The control unit 170 can use the product of the RGB data value of each pixel and the reproduction time of the NFT content to calculate the current consumption of each pixel.

[0213] Current consumption increases as the product of the RGB data value of each pixel and the rendering time of the NFT content increases. Conversely, current consumption decreases as the product of the RGB data value of each pixel and the rendering time of the NFT content decreases.

[0214] The memory 240 can store a table showing the correspondence between the RGB dataset and the current consumption, which is the result of the calculation of the product of the RGB data values ​​and the reproduction time of the NFT content.

[0215] Figure 10 It is a graph used to describe the correspondence between a matching RGB dataset and current consumption according to an embodiment of the present disclosure, wherein the RGB dataset is the result of a calculation of the product of RGB data values ​​and the reproduction time of NFT content.

[0216] Reference Figure 10 Table 1000 shows the correspondence between RGB datasets and current consumption, which are calculated as the product of the RGB data values ​​and the reproduction time of the NFT content.

[0217] Table 1000 may be stored in the memory 240 or storage unit 140 of the display device 100.

[0218] The control unit 170 can calculate the product of the RGB data value of a pixel and the NFT playback time period. The control unit 170 can read the current consumption corresponding to the calculated result value from the memory 240.

[0219] Further description Figure 9 .

[0220] The control unit 170 estimates the expected degradation time of each pixel based on the calculated current consumption of each pixel (S905).

[0221] The control unit 170 can estimate the expected degradation time of each pixel based on the accumulated current of each pixel and the calculated current consumption.

[0222] The control unit 170 can sum the accumulated current and consumed current of a pixel, and use the estimated accumulated current as a result of the summation to estimate the expected degradation time of the pixel.

[0223] The memory 240 can store a reference current consumption that causes pixel burn-in. The control unit 170 can estimate the expected degradation time based on the difference between the accumulated estimated current and the reference current consumption.

[0224] As the difference between the cumulative estimated current and the reference consumption current decreases, the expected degradation time can be reduced; as the difference between the cumulative estimated current and the reference consumption current increases, the expected degradation time can be increased.

[0225] A table indicating the correspondence between the difference between the cumulative estimated current and the reference consumption current and the expected degradation time can be stored in memory 240.

[0226] Figure 11 It is a graph used to describe the correspondence between the difference between the cumulative estimated current and the reference current consumption and the expected degradation time, according to embodiments of the present disclosure.

[0227] Table 1100 may be stored in the memory 240 or storage unit 140 of the display device 100.

[0228] The control unit 170 can calculate the difference between the cumulative estimated current and the reference consumption current, and can read the expected degradation time of the pixel corresponding to the calculated difference from Table 1100.

[0229] When the value obtained by subtracting the accumulated estimated current from the reference consumed current is equal to or less than 0, the control unit 170 can determine the corresponding pixel as the burn-in target pixel of the expected burn-in.

[0230] Further description Figure 9 .

[0231] The control unit 170 determines whether the number of pixels expected to burn in based on the expected degradation time of each pixel is greater than or equal to a preset number (S907).

[0232] When there is a pixel that will reach the expected degradation time during the content reproduction period, the control unit 170 can select the corresponding pixel as the pixel expected to burn-in.

[0233] For example, when the content reproduction period is 5 hours and the expected degradation time (the time when pixel degradation occurs) is reached after 1 hour, the corresponding pixel can be identified as the pixel expected to burn-in.

[0234] When the number of pixels exceeding the expected burn-in time is equal to or greater than the preset number, the control unit 170 causes the display unit 180 to operate in burn-in prevention mode as the image output mode (S909).

[0235] Burn-in prevention mode is a mode that outputs a lower brightness than the normal output mode. In other words, burn-in prevention mode mitigates burn-in by outputting a lower quality image compared to the normal output mode.

[0236] In burn-in prevention mode, control unit 170 can control the operation of control panel 210 to adjust the image brightness. Control unit 170 can control the operation of control panel 210 to output a second brightness that is lower than the first brightness output in image output mode.

[0237] For this purpose, the control unit 170 can perform control to reduce the current flowing through each of the plurality of pixels constituting the panel 210.

[0238] In burn-in prevention mode, the control unit 170 can sequentially turn each of all pixels on / off according to a predetermined time period.

[0239] Alternatively, in burn-in prevention mode, the control unit 170 can sequentially turn on / off each pixel expected to burn-in among all pixels according to a predetermined time period.

[0240] In one implementation, in burn-in prevention mode, the control unit 170 can turn on half of the pixels that make up the panel 210 and turn off the other half.

[0241] In another embodiment, in burn-in prevention mode, the control unit 170 can sequentially turn on / off pixels that have a usage time equal to or greater than a preset time among all pixels constituting the panel 210.

[0242] In burn-in prevention mode, the control unit 170 can operate to make pixels with usage time less than a preset time output light in normal state, and make pixels with usage time equal to or greater than the preset time turn on / off sequentially according to a predetermined time period.

[0243] When the number of pixels exceeding the expected burn-in time is less than the preset number, the control unit 170 causes the display unit 180 to operate in normal output mode as image output mode (S911).

[0244] The normal output mode can be a mode in which multiple pixels of the panel 210 constituting the display unit 180 output light in a normal state.

[0245] Figure 12 This is a diagram illustrating a pop-up window that notifies a reduction in the playback time of NFT content in burn-in prevention mode according to an embodiment of the present disclosure.

[0246] Reference Figure 12 The display device 100 reproduces the NFT content 1200 on the display unit 180.

[0247] When the image output mode is switched to burn-in prevention mode, the display device 100 can display a pop-up window 1210 on the display unit 180 notifying that the original reproduction time of the NFT content has been changed to a reduced time.

[0248] The pop-up window 1210 may also include text indicating a reduction in the brightness of the NFT content.

[0249] In another embodiment, when the image output mode is switched to burn-in prevention mode, the display device 100 may display a setting pop-up window (not shown) on the display unit 180 that can change and set the original playback time of the NFT content to a reduced time.

[0250] The settings pop-up can also include text instructing the NFT content to have reduced brightness.

[0251] Therefore, according to the embodiments of this disclosure, pixel burn-in can be effectively prevented during image reproduction.

[0252] According to embodiments of this disclosure, the above method can be implemented on a medium containing a program using processor-readable code. Examples of processor-readable media include ROM (Read-Only Memory), Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and can be implemented in the form of a carrier wave (e.g., via Internet transmission).

[0253] The display device described above is not limited to the configuration and method of the above embodiments. The above embodiments can be configured by selectively combining all or some of the embodiments, so that various modifications can be made.

Claims

1. An organic light-emitting diode (OLED) display device, the OLED display device comprising: The display unit includes a plurality of pixels, each pixel including an organic light-emitting layer, and the display unit is configured to display an image; as well as The control unit is configured as follows: Calculate the cumulative current for each of the plurality of pixels; The expected current consumption of each of the plurality of pixels during the reproduction period of the image is calculated by using information about the image. Calculate the cumulative estimated current, which is the sum of the cumulative current and the expected current consumption; The expected degradation time of each of the plurality of pixels is estimated based on the difference between the cumulative estimated current and the reference consumption current that causes burn-in of each of the plurality of pixels, the reference consumption current being stored in memory; and When the number of pixels expected to burn-in based on the estimated expected degradation time is greater than or equal to a preset number, the display unit is operated in burn-in prevention mode as the image output mode to output a brightness lower than that output in the normal output mode when the image is output in normal state.

2. The organic light-emitting diode display device according to claim 1, wherein, In the burn-in prevention mode, the control unit is configured to sequentially turn each of the plurality of pixels on or off according to a predetermined time period.

3. The organic light-emitting diode display device according to claim 1, wherein, In the burn-in prevention mode, the control unit is configured to sequentially turn on / off each of the plurality of pixels that is expected to burn-in according to a predetermined time period.

4. The organic light-emitting diode display device according to claim 1, wherein, When the number of pixels among the plurality of pixels expected to burn in based on the estimated expected degradation time is less than a preset number, the control unit is configured to cause the display unit to operate in the normal output mode as the image output mode, and The normal output mode is a mode that outputs a brightness greater than that in the burn-in prevention mode.

5. The organic light-emitting diode display device according to claim 1, wherein, The control unit is configured to receive the reproduction period of the image input by the user.

6. The organic light-emitting diode display device according to claim 1, wherein, When the image output mode is running in the burn-in prevention mode, the control unit is configured to display a pop-up window on the display unit notifying the reduced reproduction time of the image.

7. The organic light-emitting diode display device according to claim 1, wherein, When the image output mode is running in the burn-in prevention mode, the control unit is configured to display a setting pop-up window on the display unit for setting the reduction of the image's reproduction time.

8. The organic light-emitting diode display device according to claim 1, wherein, The image is a non-fungible token (NFT) image.

9. A method of operating an organic light-emitting diode (OLED) display device for displaying images, the OLED display device comprising a display unit, the display unit comprising a plurality of pixels, each pixel comprising an organic light-emitting layer, the method comprising the following steps: Calculate the cumulative current for each of the plurality of pixels; The expected current consumption of each of the plurality of pixels during the reproduction period of the image is calculated by using information about the image. Calculate the cumulative estimated current, which is the sum of the cumulative current and the expected current consumption; The expected degradation time of each of the plurality of pixels is estimated based on the difference between the cumulative estimated current and the reference consumption current that causes burn-in of each of the plurality of pixels, wherein the reference consumption current is stored in memory; as well as When the number of pixels expected to burn-in based on the estimated expected degradation time is greater than or equal to a preset number, the display unit is operated in burn-in prevention mode as the image output mode to output a brightness lower than that output in the normal output mode when the image is output in normal state.

10. The operating method according to claim 9, wherein, The method further includes the following steps: in burn-in prevention mode, each of the plurality of pixels is turned on / off sequentially according to a predetermined time period.

11. The operating method according to claim 9, wherein, The method further includes the following steps: in burn-in prevention mode, sequentially turning on / off each of the multiple pixels that are expected to burn-in according to a predetermined time period.

12. The operating method according to claim 9, wherein, The method further includes the following steps: when the number of pixels among the plurality of pixels expected to burn in based on the estimated expected degradation time is less than a preset number, the display unit is operated in the normal output mode as the image output mode, and The normal output mode is a mode that outputs a brightness greater than that in the burn-in prevention mode.

13. The operating method according to claim 9, wherein, The method further includes the step of receiving the reproduction time period of the image input by the user.

14. The operating method according to claim 9, wherein, The method further includes the following steps: when the image output mode is running in burn-in prevention mode, a pop-up window is displayed on the display unit to notify the image of the reduced reproduction time.

15. The operating method according to claim 9, wherein, The method further includes the following steps: when the image output mode is running in burn-in prevention mode, a setting pop-up window for setting the reduction of the reproduction period of the image is displayed on the display unit.

Images