Display device and method for operating same

Abstract

A display device according to an embodiment of the present disclosure comprises: a display having a plurality of pixels; and a controller that controls the display, wherein the controller may control the display such that content is displayed in a first area of the display and one of the R, G, and B values of each pixel of a second area adjacent to the first area is different from the other two values.

Description

Display device and method of operation thereof

[0001] The present disclosure relates to a display device and a method of operating the same.

[0002] As display devices have become thinner, users are increasingly using them for more than just viewing videos, but also as picture frames. In other words, display devices can be used as digital picture frames.

[0003] To achieve this, the display device provides features such as a gallery application, which allows content such as images, photos, and videos to be displayed for extended periods of time. The content's aspect ratio may differ from the display's screen ratio, resulting in blank areas in the left and right, top and bottom areas. The display device can output these blank areas as black images.

[0004] When outputting content in this way and the surrounding blank area is output as a black image, the blank area deteriorates relatively less than the content area. However, if the difference in deterioration between the blank area and the content area becomes significant, the boundary between the blank area and the content area may be perceived as an afterimage.

[0005] The present disclosure seeks to minimize the problem of the boundary between a content area and a margin area being perceived as an afterimage when content involving a margin area is displayed for a long period of time.

[0006] The present disclosure seeks to minimize afterimages by minimizing concentrated deterioration of specific subpixels in a blank area when outputting content whose aspect ratio is different from the screen ratio of the display through a display to which WRGB subpixels are applied.

[0007] A display device according to an embodiment of the present disclosure includes a display having a plurality of pixels, and a controller for controlling the display, wherein the controller can control the display to display content in a first area of ​​the display, and to have one of the R value, the G value, and the B value of each pixel of a second area adjacent to the first area different from the other two.

[0008] The controller can change two of the R, G and B values ​​at regular intervals.

[0009] The controller can change any one subpixel with a different pixel value at regular intervals.

[0010] The controller can determine how often to change subpixels with different pixel values ​​based on the user's viewing patterns.

[0011] The controller can change any one subpixel with a different pixel value when the content changes.

[0012] The controller can change any one subpixel having a different pixel value when at least one of the size and position of the second region changes.

[0013] The controller can determine which subpixel has a different pixel value based on the content.

[0014] The controller can determine which subpixel has a different pixel value based on the accumulated stress of each subpixel.

[0015] The controller can control the pixel values ​​of the pixels in the second area to any one of (first value, second value, second value), (second value, first value, second value), and (second value, second value, first value).

[0016] The controller can adjust the gap between the first value and the second value depending on the content.

[0017] The controller can adjust the gap between 10 and 30.

[0018] The controller controls the pixel values ​​of the second area to (first value, second value, second value) at a first point in time, to (first value, first value, second value) at a second point in time that is a predetermined period after the first point in time, to (second value, first value, second value) at a third point in time that is a predetermined period after the second point in time, to (second value, first value, second value) at a fourth point in time that is a predetermined period after the third point in time, to (second value, first value, first value) at a fifth point in time that is a predetermined period after the fourth point in time, to (second value, second value, first value) at a sixth point in time that is a predetermined period after the fifth point in time, and can gradually change the pixel values ​​of each subpixel from the first value to the second value or from the second value to the first value during the predetermined period.

[0019] The first value may be greater than the second value.

[0020] The controller can display the content in the first area when the screen ratio of the commercial content is different from the screen ratio of the display, and control one of the R value, G value, and B value, which are pixel values ​​of the second area, to be different from the other two.

[0021] The controller may be a second area, either a left or right area of ​​the first area or an upper or lower area of ​​the first area.

[0022] According to an embodiment of the present disclosure, when outputting content, not only white sub-pixels but also red, green, or blue sub-pixels in the margin area deteriorate together, so that the difference in the amount of deterioration between the content area and the margin area is reduced, thereby minimizing the occurrence of afterimages at the boundary between the content area and the margin area.

[0023] According to an embodiment of the present disclosure, there is an advantage in that the occurrence of afterimages is minimized while minimizing disturbance of viewing of the content by selecting a subpixel to which current is to be supplied in a blank area based on the color of the content.

[0024] According to an embodiment of the present disclosure, there is an advantage in that the occurrence of afterimages is minimized while the concentrated deterioration of a specific subpixel is minimized by selecting a subpixel to which current is to be supplied in a margin area based on the accumulated stress of the subpixels.

[0025] According to an embodiment of the present disclosure, there is an advantage in that the occurrence of afterimages is minimized while minimizing disruption to the user's viewing of content by selecting a subpixel to which current is to be supplied in a blank area based on a change in content or a user's viewing pattern, etc.

[0026] FIG. 1 is a block diagram illustrating the configuration of a display device according to an embodiment of the present disclosure.

[0027] FIG. 2 is a block diagram illustrating the configuration of a display device according to one embodiment of the present disclosure.

[0028] Figure 3 is an example of an internal block diagram of the controller of Figure 2.

[0029] FIG. 4 is a block diagram of a remote control device according to an embodiment of the present disclosure.

[0030] Fig. 5 shows an example of an actual configuration of a remote control device according to one embodiment of the present invention.

[0031] FIG. 6 shows an example of utilizing a remote control device according to an embodiment of the present disclosure.

[0032] Figure 7 is an internal block diagram of the display of Figure 2.

[0033] Figures 8 and 9 are drawings for reference in the description of the organic light-emitting panel of Figure 7.

[0034] Figure 10 is an example drawing of content that may cause severe afterimages on an organic light-emitting panel.

[0035] Figure 11 is a drawing for explaining an afterimage that occurs after displaying an example image such as Figure 10 for a long period of time.

[0036] Figure 12 is a drawing to explain the problem that afterimages are not improved even when the blank area is output as a gray image in an organic light-emitting panel to which WRGB subpixels are applied.

[0037] FIGS. 13 and 14 are drawings for explaining a method for controlling a display device according to an embodiment of the present disclosure so that one of the pixel values ​​R value, G value, and B value of a margin area is different from the other two.

[0038] FIG. 15 is a drawing for explaining how a display device according to an embodiment of the present disclosure gradually changes one sub-pixel with a different pixel value.

[0039] FIG. 16 is a flowchart illustrating an operation method of a display device according to an embodiment of the present disclosure.

[0040] Hereinafter, the present invention will be described in more detail with reference to the drawings.

[0041] The suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification and do not impart any particularly significant meaning or role to the components themselves. Therefore, the terms "module" and "part" may be used interchangeably.

[0042] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0043] Referring to the drawing, the display device (100) may include a display (180).

[0044] Meanwhile, the display (180) may be implemented as any one of various panels. For example, the display (180) may be any one of a liquid crystal display panel (LCD panel), an organic light-emitting panel (OLED panel), an inorganic light-emitting panel (LED panel), etc.

[0045] In the present disclosure, the display (180) is provided with an organic light-emitting panel (OLED panel).

[0046] Meanwhile, the display device (100) of FIG. 1 can be a monitor, TV, tablet PC, mobile terminal, etc.

[0047] The display device (100) of FIG. 1 is, for example, an intelligent display device that adds computer support functions to its broadcast reception function. While remaining faithful to the broadcast reception function, it can also be equipped with Internet functions 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 functions, it can connect to the Internet and a computer, enabling functions such as email, web browsing, banking, or gaming. A standardized, universal operating system (OS) can be used for these various functions.

[0048] Accordingly, the display device described in this disclosure 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, for example, a network TV, HBB TV, smart TV, LED TV, OLED TV, etc., and in some cases, can also be applied to smartphones.

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

[0050] Referring to FIG. 2, the display device (100) 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 microphone (175), a display (180), a speaker (185), and a power supply circuit (190).

[0051] The broadcast receiving unit (130) may include a tuner (131), a demodulator (132), and a network interface (133).

[0052] 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.

[0053] 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.

[0054] 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).

[0055] The external device interface (135) can provide a connection path between the display device (100) 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 (100) and transmit them to the controller (170). The external device interface (135) can include a plurality of external input terminals. The plurality of external input terminals can include an RGB terminal, one or more HDMI (High Definition Multimedia Interface) terminals, and a component terminal.

[0056] 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).

[0057] 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.

[0058] The network interface (133) may provide an interface for connecting the display device (100) to a wired / wireless network including the Internet. The network interface (133) may 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.

[0059] Additionally, some content data stored in the display device (100) can be transmitted to a selected user or electronic device among other users or other electronic devices pre-registered in the display device (100).

[0060] The network interface (133) can access a predetermined web page through a connected network or another network linked to the connected network. That is, by accessing a predetermined web page through a network, data can be transmitted or received with the corresponding server.

[0061] In addition, the network interface (133) can receive content or data provided by a content provider or network operator. That is, the network interface (133) can receive content such as movies, advertisements, games, VOD, broadcast signals, etc. and information related thereto provided from a content provider or network provider via a network.

[0062] Additionally, 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.

[0063] The network interface (133) can select and receive a desired application from among applications open to the public via a network.

[0064] 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.

[0065] In addition, 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 store information about a specific image through a channel memory function.

[0066] The memory (140) can store an application or a list of applications input from an external device interface (135) or a network interface (133).

[0067] The display device (100) 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.

[0068] 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).

[0069] In addition, the user input interface (150) can transmit control signals input from local keys (not shown) such as a power key, channel key, volume key, and setting value to the controller (170).

[0070] 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. In addition, an image signal processed by the controller (170) can be input to an external output device through an external device interface (135).

[0071] The voice signal processed by the controller (170) can be output as audio to the speaker (185). In addition, the voice signal processed by the controller (170) can be input to an external output device through the external device interface (135).

[0072] In addition, the controller (170) can control the overall operation within the display device (100).

[0073] In addition, the controller (170) can control the display device (100) by a user command or 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 (100).

[0074] 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.

[0075] In addition, 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).

[0076] Meanwhile, 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.

[0077] In addition, the controller (170) can control the playback of content stored in the display device (100), 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.

[0078] 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. This wireless communication interface (173) can support wireless communication between the display device (100) and a wireless communication system, between the display device (100) and another display device (100), or between the display device (100) and a network in which the display device (100, or an external server) is located via a short-range wireless communication network (Wireless Area Network). The short-range wireless communication network can be a short-range wireless personal area network (Wireless Personal Area Network).

[0079] Here, the other display device (100) may be a wearable device (e.g., a smartwatch, smart glasses, a head-mounted display (HMD)) or a mobile terminal such as a smart phone that can exchange data with (or be linked to) the display device (100) according to the present invention. The wireless communication interface (173) may detect (or recognize) a wearable device capable of communication around the display device (100).

[0080] Furthermore, if the detected wearable device is a device certified to communicate with the display device (100) according to the present invention, the controller (170) can transmit at least a portion of the data processed in the display device (100) 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 (100) via the wearable device.

[0081] The microphone (175) can acquire audio. The microphone (175) can acquire audio around the display device (100).

[0082] 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.

[0083] Meanwhile, the display device (100) illustrated in FIG. 2 is only one embodiment of the present invention, and therefore some of the illustrated components may be integrated, added, or omitted depending on the specifications of the display device (100) actually implemented.

[0084] 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.

[0085] According to another embodiment of the present invention, the display device (100) may receive and play back 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.

[0086] For example, the display device (100) may be implemented separately as an image processing device, such as a set-top box, for receiving broadcast signals or contents according to various network services, and a content playback device for playing contents input from the image processing device.

[0087] In this case, the operating method of the display device according to the embodiment of the present invention described below may be performed by any one of the display device (100) 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 an audio output unit (185).

[0088] The speaker (185) receives a signal processed by the controller (170) and outputs it as voice.

[0089] The power supply circuit (190) supplies power to the entire display device (100). In particular, it can supply power to a controller (170) that can be implemented in the form of a system on chip (SOC), a display (180) for displaying images, and a speaker (185) for audio output.

[0090] Specifically, the power supply circuit (190) may include a converter that converts AC power into DC power and a dc / dc converter that converts the level of the DC power.

[0091] Figure 3 is an example of an internal block diagram of the controller of Figure 2.

[0092] Referring to the drawings, a controller (170) according to one embodiment of the present disclosure may include a demultiplexer (310), an image processing unit (320), a processor (330), an OSD generation unit (340), a mixer (345), a frame rate conversion unit (350), and a formatter (360). In addition, an audio processing unit (not shown) and a data processing unit (not shown) may be further included.

[0093] The demultiplexer (310) demultiplexes the input stream. For example, when MPEG-2 TS is input, it can be demultiplexed to separate it into video, audio, and data signals, respectively. Here, the stream signal input to the demultiplexer (310) may be a stream signal output from a tuner (131), a demodulator (132), or an external device interface (135).

[0094] The image processing unit (320) can perform image processing of a demultiplexed image signal. To this end, the image processing unit (320) may include an image decoder (325) and a scaler (335).

[0095] The video decoder (325) decodes the demultiplexed video signal, and the scaler (335) scales the resolution of the decoded video signal so that it can be output on the display (180).

[0096] The video decoder (325) can be equipped with decoders of various standards. For example, it can be equipped with an MPEG-2, H.264 decoder, a 3D video decoder for color images and depth images, a decoder for multi-view images, etc.

[0097] The processor (330) can control the overall operation within the display device (100) or within the controller (170). For example, the processor (330) can control the tuner (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

[0098] Additionally, the processor (330) can control the display device (100) by a user command or internal program input through the user input interface (150).

[0099] Additionally, the processor (330) can perform data transmission control with a network interface (133) or an external device interface (135).

[0100] Additionally, the processor (330) can control the operation of the demultiplexing unit (310), the image processing unit (320), the OSD generation unit (340), etc. within the controller (170).

[0101] The OSD generation unit (340) generates an OSD signal based on user input or independently. For example, based on a user input signal, a signal for displaying various information in the form of graphics or text on the screen of the display (180) may be generated. The generated OSD signal may include various data such as the user interface screen of the display device (100), various menu screens, widgets, and icons. In addition, the generated OSD signal may include a 2D object or a 3D object.

[0102] In addition, the OSD generation unit (340) can generate a pointer that can be displayed on the display based on a pointing signal input from the remote control device (200). In particular, such a pointer can be generated by a pointing signal processing unit, and the OSD generation unit (340) can include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) can also be provided separately rather than being included within the OSD generation unit (340).

[0103] The mixer (345) can mix the OSD signal generated by the OSD generation unit (340) and the decoded image signal processed by the image processing unit (320). The mixed image signal is provided to the frame rate conversion unit (350).

[0104] The frame rate converter (FRC) (350) can convert the frame rate of an input video. Meanwhile, the frame rate converter (350) can also output the video as is without a separate frame rate conversion.

[0105] Meanwhile, the formatter (360) can change the format of an input video signal into a video signal for display on a display and output it.

[0106] The formatter (360) can change the format of a video signal. For example, the format of a 3D video signal can be changed to any one of various 3D formats, such as a side-by-side format, a top-down format, a frame sequential format, an interlaced format, and a checker box format.

[0107] Meanwhile, an audio processing unit (not shown) within the controller (170) can perform audio processing of a demultiplexed audio signal. For this purpose, the audio processing unit (not shown) can be equipped with various decoders.

[0108] Additionally, the audio processing unit (not shown) within the controller (170) can process bass, treble, volume control, etc.

[0109] A data processing unit (not shown) within the controller (170) can perform data processing of a demultiplexed data signal. For example, if the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal may be electronic program guide information (EPG) information that includes broadcast information such as the start time and end time of a broadcast program broadcast on each channel.

[0110] Meanwhile, the block diagram of the controller (170) illustrated in FIG. 3 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the controller (170) actually implemented.

[0111] In particular, the frame rate converter (350) and the formatter (360) are not provided within the controller (170), but may be provided separately, or may be provided separately as one module.

[0112] Next, a remote control device according to an embodiment of the present disclosure will be described with reference to FIGS. 4 and 5.

[0113] FIG. 4 is a block diagram of a remote control device according to an embodiment of the present disclosure, and FIG. 5 shows an example of an actual configuration of a remote control device (200) according to an embodiment of the present invention.

[0114] First, referring to FIG. 4, the remote control device (200) may include a fingerprint recognition device (210), a wireless communication circuit (220), a user input interface (230), a sensor (240), an output interface (250), a power supply circuit (260), a memory (270), a controller (280), and a microphone (290).

[0115] Referring to FIG. 4, the wireless communication circuit (220) transmits and receives signals with any one of the display devices according to the embodiments of the present disclosure described above.

[0116] The remote control device (200) may be equipped with an RF circuit (221) capable of transmitting and receiving signals with the display device (100) according to RF communication standards, and an IR circuit (223) capable of transmitting and receiving signals with the display device (100) according to IR communication standards. In addition, the remote control device (200) may be equipped with a Bluetooth circuit (225) capable of transmitting and receiving signals with the display device (100) according to Bluetooth communication standards. In addition, the remote control device (200) may be equipped with an NFC circuit (227) capable of transmitting and receiving signals with the display device (100) according to NFC (Near Field Communication) communication standards, and a WLAN circuit (229) capable of transmitting and receiving signals with the display device (100) according to WLAN (Wireless LAN) communication standards.

[0117] In addition, the remote control device (200) transmits a signal containing information about the movement of the remote control device (200) to the display device (100) through a wireless communication circuit (220).

[0118] Meanwhile, the remote control device (200) can receive a signal transmitted by the display device (100) through the RF circuit (221), and, if necessary, can transmit commands for power on / off, channel change, volume change, etc. to the display device (100) through the IR circuit (223).

[0119] The user input interface (230) may be configured as a keypad, buttons, a touchpad, or a touch screen. The user can input commands related to the display device (100) to the remote control device (200) by operating the user input interface (230). If the user input interface (230) includes a hard key button, the user can input commands related to the display device (100) to the remote control device (200) by pushing the hard key button. This will be described with reference to FIG. 5.

[0120] Referring to FIG. 5, the remote control device (200) may include a plurality of buttons. The plurality of buttons may include a fingerprint recognition button (212), a power button (231), a home button (232), a live button (233), an external input button (234), a volume control button (235), a voice recognition button (236), a channel change button (237), a confirmation button (238), and a back button (239).

[0121] The fingerprint recognition button (212) may be a button for recognizing a user's fingerprint. In one embodiment, the fingerprint recognition button (212) may be capable of a push operation, and may receive a push operation and a fingerprint recognition operation.

[0122] The power button (231) may be a button for turning the power of the display device (100) on / off.

[0123] The home button (232) may be a button for moving to the home screen of the display device (100).

[0124] The live button (233) may be a button for displaying a real-time broadcast program.

[0125] The external input button (234) may be a button for receiving an external input connected to the display device (100).

[0126] The volume control button (235) may be a button for adjusting the size of the volume output by the display device (100).

[0127] The voice recognition button (236) may be a button for receiving a user's voice and recognizing the received voice.

[0128] The channel change button (237) may be a button for receiving a broadcast signal of a specific broadcast channel.

[0129] The confirmation button (238) may be a button for selecting a specific function, and the back button (239) may be a button for returning to the previous screen.

[0130] Let's explain Figure 4 again.

[0131] When the user input interface (230) has a touch screen, the user can input commands related to the display device (100) using the remote control device (200) by touching the soft keys of the touch screen. In addition, the user input interface (230) may have various types of input means that can be operated by the user, such as a scroll key or a jog key, and the present embodiment does not limit the scope of the present disclosure.

[0132] The sensor (240) may include a gyro sensor (241) or an acceleration sensor (243), and the gyro sensor (241) may sense information about the movement of the remote control device (200).

[0133] For example, the gyro sensor (241) can sense information about the operation of the remote control device (200) based on the x, y, and z axes, and the acceleration sensor (243) can sense information about the movement speed of the remote control device (200). Meanwhile, the remote control device (200) can further include a distance measuring sensor, so as to sense the distance to the display (180) of the display device (100).

[0134] The output interface (250) can output a video or audio signal corresponding to an operation of the user input interface (230) or a signal transmitted from the display device (100).

[0135] The user can recognize whether the output interface (250) is manipulating the user input interface (230) or controlling the display device (100).

[0136] For example, the output interface (250) may include an LED (251) that lights up when the user input interface (230) is operated or a signal is transmitted and received with the display device (100) via the wireless communication unit (225), a vibrator (253) that generates vibrations, a speaker (255) that outputs sound, or a display (257) that outputs images.

[0137] In addition, the power supply circuit (260) supplies power to the remote control device (200), and power waste can be reduced by stopping the power supply when the remote control device (200) does not move for a predetermined period of time.

[0138] The power supply circuit (260) can resume power supply when a predetermined key provided in the remote control device (200) is operated.

[0139] The memory (270) can store various types of programs, application data, etc. required for the control or operation of the remote control device (200).

[0140] When the remote control device (200) wirelessly transmits and receives signals through the display device (100) and the RF circuit (221), the remote control device (200) and the display device (100) transmit and receive signals through a predetermined frequency band.

[0141] The controller (280) of the remote control device (200) can store and reference information regarding the frequency band that can wirelessly transmit and receive signals with the display device (100) paired with the remote control device (200) in the memory (270).

[0142] The controller (280) controls all matters related to the control of the remote control device (200). The controller (280) can transmit a signal corresponding to a predetermined key operation of the user input interface (230) or a signal corresponding to the movement of the remote control device (200) sensed by the sensor (240) to the display device (100) via the wireless communication unit (225).

[0143] Additionally, the microphone (290) of the remote control device (200) can acquire voice.

[0144] A plurality of microphones (290) may be provided.

[0145] Next, Figure 6 is described.

[0146] FIG. 6 shows an example of utilizing a remote control device according to an embodiment of the present disclosure.

[0147] Figure 6 (a) illustrates that a pointer (205) corresponding to a remote control device (200) is displayed on a display (180).

[0148] The user can move or rotate the remote control device (200) up and down, left and right. The pointer (205) displayed on the display (180) of the display device (100) corresponds to the movement of the remote control device (200). This remote control device (200) can be called a space remote control because, as shown in the drawing, the pointer (205) moves and is displayed according to the movement in 3D space.

[0149] Figure 6 (b) illustrates that when a user moves the remote control device (200) to the left, the pointer (205) displayed on the display (180) of the display device (100) also moves to the left correspondingly.

[0150] Information about the movement of the remote control device (200) detected through the sensor of the remote control device (200) is transmitted to the display device (100). The display device (100) can calculate the coordinates of the pointer (205) from the information about the movement of the remote control device (200). The display device (100) can display the pointer (205) to correspond to the calculated coordinates.

[0151] Figure 6 (c) illustrates a case where a user moves the remote control device (200) away from the display (180) while pressing a specific button within the remote control device (200). As a result, a selection area within the display (180) corresponding to the pointer (205) can be zoomed in and displayed in an enlarged manner.

[0152] Conversely, when the user moves the remote control device (200) closer to the display (180), the selection area within the display (180) corresponding to the pointer (205) may be zoomed out and displayed in a reduced size.

[0153] Meanwhile, when the remote control device (200) moves away from the display (180), the selection area may be zoomed out, and when the remote control device (200) moves closer to the display (180), the selection area may be zoomed in.

[0154] In addition, when a specific button within the remote control device (200) is pressed, recognition of up, down, left, and right movements may be excluded. That is, when the remote control device (200) moves away from or toward the display (180), up, down, left, and right movements may not be recognized, and only forward and backward movements may be recognized. When a specific button within the remote control device (200) is not pressed, only the pointer (205) moves in accordance with the up, down, left, and right movements of the remote control device (200).

[0155] Meanwhile, the movement speed or movement direction of the pointer (205) can correspond to the movement speed or movement direction of the remote control device (200).

[0156] Meanwhile, the pointer in this specification refers to an object displayed on the display (180) in response to the operation of the remote control device (200). Accordingly, objects of various shapes other than the arrow shape illustrated in the drawing can be used as the pointer (205). For example, the pointer may be a concept including a point, a cursor, a prompt, a thick outline, etc. In addition, the pointer (205) may be displayed corresponding to one point on the horizontal or vertical axis of the display (180), or may be displayed corresponding to multiple points such as lines or surfaces.

[0157] Figure 7 is an internal block diagram of the display of Figure 2.

[0158] Referring to the drawing, the display (180) based on an organic light-emitting panel may include an organic light-emitting panel (410), a first interface (430), a second interface (431), a timing controller (432), a gate driver (434), a data driver (436), a memory (440), a processor (470), and a power supply circuit (490).

[0159] The display (180) receives a video signal (Vd), a first DC power source (V1), and a second DC power source (V2), and can display a predetermined image based on the video signal (Vd).

[0160] Meanwhile, the first interface (430) within the display (180) can receive a video signal (Vd) and a first DC power source (V1) from the controller (170).

[0161] Here, the first DC power supply (V1) can be used for the operation of the power supply circuit (490) and the timing controller (432) within the display (180).

[0162] Next, the second interface (431) can receive a second DC power supply (V2) from an external power supply circuit (190). Meanwhile, the second DC power supply (V2) can be input to a data driver (436) within the display (180).

[0163] The timing controller (432) can output a data driving signal (Sda) and a gate driving signal (Sga) based on a video signal (Vd).

[0164] For example, when the first interface (430) converts an input image signal (Vd) and outputs a converted image signal (Va1), the timing controller (432) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the converted image signal (Va1).

[0165] The timing controller (432) can receive, in addition to the video signal (Vd) from the controller (170), a control signal, a vertical synchronization signal (Vsync), etc.

[0166] In addition, the timing controller (432) can output a gate drive signal (Sga) for the operation of the gate driver (434) and a data drive signal (Sda) for the operation of the data driver (436) based on a control signal, a vertical synchronization signal (Vsync), etc., in addition to a video signal (Vd).

[0167] The data driving signal (Sda) at this time may be a data driving signal for driving WRGB subpixels when the panel (410) has WRGB subpixels.

[0168] Meanwhile, the timing controller (432) can further output a control signal (Cs) to the gate driver (434).

[0169] The gate driver (434) and the data driver (436) supply a scan signal and an image signal to the organic light-emitting panel (410) through the gate line (GL) and the data line (DL), respectively, in accordance with the gate drive signal (Sga) and the data drive signal (Sda) from the timing controller (432). Accordingly, the organic light-emitting panel (410) displays a predetermined image.

[0170] Meanwhile, the organic light-emitting panel (410) may include an organic light-emitting layer, and in order to display an image, a plurality of gate lines (GL) and data lines (DL) may be arranged in a matrix form to cross each pixel corresponding to the organic light-emitting layer.

[0171] Meanwhile, the data driver (436) can output a data signal to the organic light-emitting panel (410) based on the second direct current power (V2) from the second interface (431).

[0172] The power supply circuit (490) can supply various power sources to the gate driver (434), data driver (436), timing controller (432), etc.

[0173] The processor (470) can perform various controls within the display (180). For example, it can control the gate driver (434), the data driver (436), the timing controller (432), etc.

[0174] Meanwhile, the processor (470) can receive information on current flowing in the subpixels of the organic light-emitting panel (410). The processor (470) can calculate the accumulated current of each subpixel of the organic light-emitting panel (410) based on the information on current flowing in the subpixels of the organic light-emitting panel (410). The calculated accumulated current can be stored in the memory (440).

[0175] The processor (470) may determine that a burn-in has occurred if the cumulative current of a subpixel of the organic light-emitting panel (410) exceeds an allowable value. For example, the processor (470) may determine that a burn-in subpixel has occurred if the cumulative current of each subpixel of the organic light-emitting panel (410) is 300,000 A or more.

[0176] Figures 8 and 9 are drawings for reference in the description of the organic light-emitting panel of Figure 7.

[0177] First, Fig. 8 is a drawing showing pixels within an organic light-emitting panel (410).

[0178] Referring to the drawing, the organic light-emitting panel (410) has a plurality of scan lines (Scan 1 to Scan n) and a plurality of data lines (W1, R1, G1, B1 to W) intersecting therewith. m ,R m ,G m ,B m ) can be equipped.

[0179] Meanwhile, a pixel is defined in the intersection area of ​​the scan line and the data line within the organic light-emitting panel (410). In the drawing, a subpixel (SP) of WRGB w1 ,SP r1 ,SP g1 ,SP b1 ) is shown.

[0180] FIG. 9 illustrates the circuit of one sub-pixel within the pixel of the organic light-emitting panel of FIG. 8.

[0181] Referring to the drawing, the organic light-emitting sub-pixel circuit (CRTm) may be an active type and include a scan switching element (SW1), a storage capacitor (Cst), a driving switching element (SW2), and an organic light-emitting layer (OLED).

[0182] The scan switching element (SW1) is turned on according to the input scan signal (Vscan) by connecting a scan line to the gate terminal. When turned on, the input data signal (Vdata) is transmitted to the gate terminal of the driving switching element (SW2) or one end of the storage capacitor (Cst).

[0183] The storage capacitor (Cst) is formed between the gate terminal and the source terminal of the driving switching element (SW2), and stores a predetermined difference between the data signal level transmitted to one end of the storage capacitor (Cst) and the DC power (Vdd) level transmitted to the other end of the storage capacitor (Cst).

[0184] For example, if the data signal has different levels according to the PAM (Plus Amplitude Modulation) method, the data signal (V data ) depending on the level difference, the power level stored in the storage capacitor (Cst) changes.

[0185] As another example, if the data signal has different pulse widths according to the PWM (Pulse Width Modulation) method, the data signal (V data ) depending on the pulse width difference, the power level stored in the storage capacitor (Cst) changes.

[0186] The driving switching element (SW2) is turned on according to the power level stored in the storage capacitor (Cst). When the driving switching element (SW2) is turned on, a driving current (I) proportional to the stored power level OLED ) flows into the organic light-emitting layer (OLED). Accordingly, the organic light-emitting layer (OLED) performs a light-emitting operation.

[0187] The organic light-emitting layer (OLED) includes an emission layer (EML) of WRGB corresponding to a subpixel, 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.

[0188] Meanwhile, subpixels all emit white light from the organic light-emitting diode (OLED), but green, red, and blue subpixels are equipped with separate color filters to express the colors. That is, green, red, and blue subpixels each additionally have green, red, and blue color filters. On the other hand, white subpixels emit white light, so separate color filters are not required.

[0189] Meanwhile, in the drawing, a case in which a p-type MOSFET is used as the scan switching element (SW1) and the driving switching element (SW2) is exemplified, but an n-type MOSFET, or other switching elements such as a JFET, IGBT, or SIC may also be used.

[0190] In the organic light-emitting panel (410), a plurality of gate lines (GL) and data lines (DL) for displaying an image are arranged in a matrix form to intersect each other, and a plurality of pixels can be arranged in the intersection area of ​​the gate lines (GL) and data lines (DL). The gate lines (GL) can be scan lines, and the data lines (DL) can be source lines.

[0191] The timing controller (432) receives a control signal, an R, G, B data signal, a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), and a data enable signal (DE) from the controller (170), controls the data driver (436) and the gate driver (434) in response to the control signal, and rearranges the R, G, B data signals to provide them to the data driver (436).

[0192] Specifically, the timing controller (432) can output the R, G, B data signals input from the controller (170) by adjusting them to the timing required by the data driver (436) and the gate driver (434). The timing controller (432) can output control signals (Timing Control) for controlling the data driver (436) and the gate driver (434).

[0193] The data driver (436) and the gate driver (434) can supply image data and scan signals to the organic light-emitting panel (410) through the data line (DL) and the gate line (GL) under the control of the timing controller (432).

[0194] The timing controller (432) can scan an image to multiple pixels arranged on the organic light-emitting panel (410), and the scanning method may include a progressive scanning method and an interlace scanning method. The progressive scanning method is a method of sequentially displaying content to be displayed on the screen from beginning to end, and the interlace scanning method is a method of displaying an image alternately on odd-numbered lines and horizontal lines.

[0195] The gate driver (434) can sequentially select the gate lines (GL) of the organic light-emitting panel (410) by sequentially supplying gate pulses synchronized with the data voltage to the gate lines (GL) in response to gate timing control signals.

[0196] The data driver (436) can convert image data corresponding to the selected gate line into an image signal and output the converted image signal to the data line (DL) of the organic light-emitting panel (410).

[0197] Meanwhile, the memory (240) may include a frame memory.

[0198] The frame memory can store image data supplied to the data driver (436).

[0199] In FIG. 7, the frame memory is depicted as a separate configuration distinct from the timing controller (432), but depending on the embodiment, the frame memory may be provided within the timing controller (432).

[0200] The frame memory can store image data to be supplied to the data driver (436) in units of frames based on the R, G, B data signals output from the controller (170).

[0201] A frame may mean a single still image that constitutes an image output from an organic light-emitting panel (410).

[0202] Meanwhile, due to the nature of organic elements, pixels under more stress in the organic light-emitting panel (410) deteriorate more, and pixels under less stress deteriorate less. In other words, differences in the amount of deterioration occur between pixels in the organic light-emitting panel (410). However, this difference in the amount of deterioration per pixel causes a problem in which the organic light-emitting panel (410) recognizes afterimages. In particular, if an image with a black margin area is output for a long period of time, the afterimage problem may become more severe.

[0203] Figure 10 is an example drawing of content that may cause severe afterimages on an organic light-emitting panel.

[0204] The display device (100) can display content such as paintings. For example, the display device (100) can display works such as paintings, photographs, and videos through a gallery application. However, the screen ratio of these works is generally not the same as that of the display (180). Therefore, black margin areas are created around the left and right areas or the top and bottom areas centered on the work.

[0205] Referring to the example of FIG. 10, the display device (100) can display content having a screen ratio different from that of the display (180), and at this time, the content is displayed in a first area (1001) of the display (180), and a second area (1002) adjacent to the first area (1001) can be a blank area. The display device (100) can output a black image in the second area (1002), which is a blank area. In the example of FIG. 10, the second area (1002) can be a left or right area of ​​the first area (1001), or an upper or lower area.

[0206] As described above, when displaying content in the first area (1001) and displaying a black image in the second area (1002), the possibility of afterimages occurring at the boundary between the first area (1001) and the second area (1002) increases.

[0207] Figure 11 is a drawing for explaining an afterimage that occurs after displaying an example image such as Figure 10 for a long period of time.

[0208] When the display (180) displays content involving a black margin area for a long period of time, as in the example of FIG. 10, the pixels in the first area (1001) may deteriorate significantly compared to the pixels in the second area (1002). That is, the difference between the amount of deterioration of the pixels in the first area (1001) and the amount of deterioration of the pixels in the second area (1002) may become large.

[0209] Accordingly, the second region (1002) that is relatively less deteriorated can be output brighter than the first region (1001) that is significantly deteriorated. Accordingly, when the display (180) displays a test image such as that in (a) of FIG. 11, an afterimage can be recognized at the boundary between the first region (1001) and the second region (1002), as in (b) of FIG. 11.

[0210] One solution to this problem is to output the margin area as a gray image rather than a black image. This approach applies some stress to the pixels in the margin area, reducing the difference in deterioration between the content display area and the margin area, thereby improving the afterimage problem.

[0211] However, even when applying a method of outputting the blank area as a gray image, there may still be organic light-emitting panels with minimal afterimage improvement. Specifically, organic light-emitting panels using WRGB subpixels have a problem with minimal afterimage improvement.

[0212] Each pixel of the organic light-emitting panel (410) is composed of multiple sub-pixels, and each pixel may be composed of RGB sub-pixels or WRGB sub-pixels. That is, depending on the type of the organic light-emitting panel (410), one pixel may be composed of an R sub-pixel, a G sub-pixel, and a B sub-pixel (an organic light-emitting panel using RGB sub-pixels), or may be composed of a W sub-pixel, an R sub-pixel, a G sub-pixel, and a B sub-pixel (an organic light-emitting panel using WRGB sub-pixels).

[0213] Figure 12 is a drawing to explain the problem that afterimages are not improved even when the blank area is output as a gray image in an organic light-emitting panel to which WRGB subpixels are applied.

[0214] The controller (170) can output the margin area as a gray image, and for example, the gray image assumes that the pixel values ​​of each pixel are 60, 60, 60. That is, the gray image can have the R value, G value, and B value of each pixel as 60.

[0215] In the case of an organic light-emitting panel to which RGB sub-pixels are applied, when the display (180) receives pixel data (60, 60, 60), it can supply current corresponding to the pixel value 60 to each of the R sub-pixel, the G sub-pixel, and the B sub-pixel. Therefore, it can be confirmed that each sub-pixel is stressed compared to when the blank area is output as a black image (when the pixel value is controlled to (0, 0, 0)). Accordingly, the difference in the amount of deterioration between the content area and the blank area is reduced, which has the effect of delaying the time when it is recognized as an afterimage.

[0216] In the case of an organic light-emitting panel to which WRGB sub-pixels are applied, when the display (180) receives pixel data (60, 60, 60), it can control the W sub-pixel to a pixel value of 60 and control each of the R sub-pixel, G sub-pixel, and B sub-pixel to a pixel value of 0. That is, the display (180) can supply current corresponding to the pixel value of 60 to the W sub-pixel, and supply current corresponding to the pixel value of 0 to each of the R sub-pixel, G sub-pixel, and B sub-pixel. That is, current can be supplied only to the W sub-pixel.

[0217] Therefore, compared to when the margin area is output as a black image (when the pixel value is controlled as (0, 0, 0)), it can be confirmed that stress is applied to the W subpixel, but stress is not applied to the R subpixel, G subpixel, and B subpixel. In other words, the difference in the amount of degradation between the content area and the margin area for the W subpixel is reduced, but the difference in the amount of degradation between the content area and the margin area for the remaining R, G, and B subpixels is still large.

[0218] In conclusion, in the case of an organic light-emitting panel with WRGB sub-pixels, even if the blank area is output as a gray image, the occurrence of afterimages due to W sub-pixels can be delayed, but the afterimage improvement effect due to R, G, and B sub-pixels is minimal.

[0219] Accordingly, the present disclosure seeks to provide a method for improving the afterimage problem for not only W sub-pixels but also R, G and B sub-pixels.

[0220] According to an embodiment of the present disclosure, a display device outputs a gray image mixed with chromatic colors in the blank area when outputting content involving a blank area, thereby improving an afterimage problem. That is, the controller (170) can output a gray image mixed with chromatic colors such as red, green, or blue in the blank area. In particular, the controller (170) can output a gray image mixed with chromatic colors so that stress is evenly applied to the W subpixel, the R subpixel, the G subpixel, and the B subpixel. This reduces the difference in deterioration between the subpixels in the content area and the subpixels in the blank area, thereby having the effect of delaying the afterimage point.

[0221] Hereinafter, a method for a display device according to an embodiment of the present disclosure to output a gray image with chromatic colors mixed in a margin area is described.

[0222] The controller (170) can receive a command to display content. The controller (170) can determine whether the screen ratio of the content according to the display command is the same as or different from the screen ratio of the display (180).

[0223] The controller (170) can display the content in the first area of ​​the display (180) when the screen ratio of the content to be displayed is different from the screen ratio of the display (180). The controller (170) can recognize a second area adjacent to the first area as a blank area. The controller (170) can recognize the second area remaining in the display (180) excluding the first area as a blank area. The second area can be the left and right areas or the upper and lower areas of the first area. That is, the second area can be the left area and the right area between the first area, or the upper and lower areas between the first area.

[0224] The controller (170) can display an anti-afterimage image in the second area while displaying content in the first area. The anti-afterimage image can be composed of a single color. The colors that make up the anti-afterimage image can be changed. The colors that make up the anti-afterimage image can include at least one of black, gray, and gray mixed with chromatic colors.

[0225] Hereinafter, it is assumed that the anti-afterimage image is composed of a mixed gray color with chromatic colors. A mixed gray color can be a color expressed when two of the R, G, and B values ​​are different from each other.

[0226] The controller (170) may display content in the first area and an image composed of a gray color mixed with chromatic colors in the second area. For example, the controller (170) may display content in the first area and a gray image composed of a red, green, or blue color mixed in the second area.

[0227] The controller (170) can control the display (180) so that one of the pixel values ​​R value, G value, and B value of each of the pixels in the second area is different from the other two. That is, the controller (170) can control the pixel values ​​of the pixels in the second area to one of (first value, second value, second value), (second value, first value, second value), and (second value, second value, first value). The first value can be greater than the second value.

[0228] The controller (170) can input to the display (180) any one of the R value, G value, and B value, which are pixel values ​​of the second region, that are different from the other two. The display (180) can receive as input, as pixel values ​​of pixels of the second region, any one of the R value, G value, and B value, that is different from the other two.

[0229] FIGS. 13 and 14 are drawings for explaining a method for controlling a display device according to an embodiment of the present disclosure so that one of the pixel values ​​R value, G value, and B value of a margin area is different from the other two.

[0230] When the controller (170) controls the pixel values ​​of the pixels of the second area as (first value, second value, second value), (second value, first value, second value) or (second value, second value, first value), the first value may be 80 and the second value may be 60.

[0231] Referring to the example of FIG. 13, the controller (170) can control the pixel values ​​of the pixels of the second area to (80, 60, 60), (60, 80, 60), or (60, 60, 80). The display (180) can receive (80, 60, 60), (60, 80, 60), or (60, 60, 80) as the pixel values ​​of the pixels of the second area.

[0232] FIG. 14(a) is an example of an output appearance of a display (180) when content is displayed in a first region and a pixel value (80, 60, 60) is input to a second region. The display (180) may supply current corresponding to the pixel value 60 to the W subpixel of the second region, supply current corresponding to the pixel value 20 to the R subpixel, and not supply current to the G and B subpixels, depending on the pixel value (80, 60, 60). That is, in this case, it can be confirmed that some stress is applied not only to the W subpixel but also to the R subpixel.

[0233] FIG. 14(b) is an example of an output appearance of the display (180) when content is displayed in the first area and pixel values ​​(60, 80, 60) are input in the second area. The display (180) may supply current corresponding to the pixel value 60 to the W subpixel, supply current corresponding to the pixel value 20 to the G subpixel, and not supply current to the R and B subpixels, depending on the pixel value (60, 80, 60). That is, in this case, it can be confirmed that some stress is applied not only to the W subpixel but also to the G subpixel.

[0234] FIG. 14(c) is an example of an output appearance of the display (180) when content is displayed in the first area and pixel values ​​(60, 60, 70) are input in the second area. The display (180) may supply current corresponding to the pixel value 60 to the W subpixel, supply current corresponding to the pixel value 20 to the B subpixel, and not supply current to the R and G subpixels, depending on the pixel value (60, 60, 80). That is, in this case, it can be confirmed that some stress is applied not only to the W subpixel but also to the B subpixel.

[0235] As described above, by controlling the pixels in the margin area to have one of the R, G, and B values ​​different from the other two, not only the W subpixels but also the R, G, or B subpixels can be degraded. Accordingly, the difference in the amount of deterioration between the content area and the margin area can be reduced, thereby delaying the occurrence of afterimages at the border between the content area and the margin area.

[0236] Meanwhile, the first value being 80 and the second value being 60 is merely an example for the convenience of explanation, and it is reasonable that it is not limited thereto.

[0237] According to one embodiment of the present disclosure, when the controller (170) controls the pixel values ​​of the pixels of the second area to (first value, second value, second value), (second value, first value, second value) or (second value, second value, first value), the gap between the first value and the second value can be adjusted.

[0238] The gap between the first and second values ​​can be set to a level that does not interfere with viewing the content. The gap represents the brightness of the chromatic color mixed into the gray image, and can be controlled to an appropriate brightness that does not interfere with viewing the content. For example, the controller (170) can adjust the gap between the first and second values ​​to between 10 and 30.

[0239] There are various ways to adjust the gap between the first and second values.

[0240] According to one embodiment of the present disclosure, the gap between the first value and the second value can be adjusted depending on the content.

[0241] As a specific example, the controller (170) can adjust the gap between the first value and the second value based on the average value of the pixel values ​​of the pixels in the first area. That is, the controller (170) can adjust the gap between the first value and the second value based on the average value of the pixel values ​​of the content displayed in the first area.

[0242] The controller (170) can increase the gap between the first value and the second value as the average value increases, and can decrease the gap between the first value and the second value as the average value decreases. For example, the controller (170) can control the gap between the first value and the second value to a first size (e.g., 30) when the average value is greater than or equal to a preset reference value, and can control the gap between the first value and the second value to a second size (e.g., 10) that is smaller than the first size when the average value is less than the preset reference value.

[0243] A higher average value indicates brighter content, meaning bright margin areas are less distracting. Therefore, controlling the brightness of the margin area can narrow the difference in deterioration between the content and margin areas. In short, adjusting the brightness of the margin area based on the brightness of the content has the effect of slowing down afterimages between the content and margin areas.

[0244] Meanwhile, the color to be mixed into the gray image output to the margin area can also be selected in various ways. For example, the controller (170) can select any one of red, green, and blue as the color to be mixed into the gray image output to the margin area. That is, the controller (170) can obtain any one of the pixel values ​​R, G, and B values ​​of the second area, which pixel value is different from the other two.

[0245] According to one embodiment, the controller (170) may determine which of the sub-pixels among R, G, and B has a different pixel value based on the content. For example, the controller (170) may calculate the average value of the R values, the average value of the G values, and the average value of the B values ​​of the pixels of the first area, and then determine the sub-pixel with the largest average value as the sub-pixel with a different pixel value from the other two. That is, the controller (170) may determine the color corresponding to the sub-pixel with the largest average value among the pixel values ​​of the content as the color to be mixed into the gray image.

[0246] According to this, the color to be displayed in the margin area is selected as a color similar to the content, which has the advantage of minimizing disruption to the viewing of the content.

[0247] In another embodiment, the controller (170) may determine which sub-pixel among R, G, and B pixel values ​​is different based on the accumulated stress of each sub-pixel. The controller (170) may calculate the accumulated stress of the sub-pixels of the second region. Here, the accumulated stress may include accumulated current.

[0248] For example, after obtaining the accumulated current of the sub-pixels of the second region, the controller (170) can determine the sub-pixel with the smallest accumulated current as one sub-pixel having a different pixel value from the other two. That is, the controller (170) can determine the color corresponding to the sub-pixel with the smallest accumulated current as the color to be mixed into the gray image.

[0249] According to this, there is an advantage in that concentrated degradation of a specific subpixel can be minimized by using more subpixels with smaller cumulative stress.

[0250] Meanwhile, as another way to minimize the concentrated deterioration of a specific subpixel, the color that constitutes the afterimage prevention image can be changed when displaying the afterimage prevention image in the second area.

[0251] According to one embodiment, the controller (170) can change at least two of the R value, the G value, and the B value at predetermined intervals.

[0252] For example, the controller (170) can control the pixel values ​​of the second region to (first value, second value, second value), and then control the pixel values ​​to (second value, first value, second value) after a predetermined time has elapsed. That is, the controller (170) can change the R value and the G value after a predetermined time has elapsed. Similarly, the controller (170) can control the pixel values ​​of the second region to (second value, first value, second value), and then control the pixel values ​​to (second value, second value, first value) after a predetermined time has elapsed. That is, the controller (170) can change the G value and the B value after a predetermined time has elapsed. Similarly, the controller (170) can control the pixel values ​​of the second region to (second value, second value, first value), and then control the pixel values ​​to (first value, second value, second value) after a predetermined time has elapsed. That is, the controller (170) can change the R value and the B value after a predetermined time has elapsed. As described above, the controller (170) can change the pixel values ​​of two sub-pixels at regular intervals, thereby changing the colors that constitute the afterimage prevention image.

[0253] That is, the controller (170) can change one sub-pixel among R, G, and B whose pixel value is different at a predetermined cycle. At this time, the cycle for changing one sub-pixel whose pixel value is different from the other two can be set in various ways.

[0254] According to the first embodiment, the period at which a pixel value changes from one pixel to another may be set as a default. For example, the period may be one minute, but this is merely an example and should not be construed as being limited thereto.

[0255] According to the second embodiment, the cycle for changing a pixel with a different pixel value can be set according to user input. The controller (170) can determine the cycle for changing a pixel with a different pixel value as a cycle selected according to user input.

[0256] According to a third embodiment, the cycle for changing a pixel with a different pixel value can be set based on the user's viewing pattern. That is, the controller (170) can determine the cycle for changing a sub-pixel with a different pixel value based on the user's viewing pattern. Specifically, the controller (170) can calculate the content viewing time or content change cycle for the user to view each content. If the content viewing time or content change cycle is less than a preset threshold, the controller (170) can determine the cycle for changing a pixel with a different pixel value as a first cycle. If the content viewing time or content change cycle is greater than or equal to the preset threshold, the controller (170) can determine the cycle for changing a pixel with a different pixel value as a second cycle that is longer than the first cycle.

[0257] In this way, if the content changes relatively frequently, the user is less likely to be uncomfortable with color changes in the second area, and there is an advantage in minimizing stress concentration on specific subpixels by frequently changing the color to be mixed into the gray image.

[0258] Meanwhile, any one subpixel with a different pixel value among R, G and B can change regardless of a specific cycle.

[0259] According to a fourth embodiment, the controller (170) can change any one sub-pixel having a different pixel value when the content displayed in the first area changes. For example, the controller (170) can change the color to be mixed into the gray image of the second area when the content displayed in the first area changes.

[0260] According to the fifth embodiment, the controller (170) can change any one subpixel having a different pixel value when at least one of the size and position of the second region changes. Specifically, even if the content changes to different content, the size or position of the second region can remain the same. Accordingly, the controller (170) can minimize user viewing disturbance by changing the color to be mixed into the gray image of the second region when at least one of the size and position of the second region changes.

[0261] The first to fifth embodiments described above may be implemented alone, but two or more embodiments may be implemented together.

[0262] Meanwhile, according to one embodiment, any one subpixel with a different pixel value may gradually continue to change over time.

[0263] FIG. 15 is a drawing for explaining how a display device according to an embodiment of the present disclosure gradually changes one sub-pixel with a different pixel value.

[0264] The controller (170) controls the pixel values ​​of the second region to (first value, second value, second value) at a first point in time, to (first value, first value, second value) at a second point in time a predetermined period later from the first point in time, to (second value, first value, second value) at a third point in time a predetermined period later from the second point in time, to (second value, first value, second value) at a fourth point in time a predetermined period later from the third point in time, to (second value, first value, first value) at a fifth point in time a predetermined period later from the fourth point in time, to (second value, second value, first value) at a sixth point in time a predetermined period later from the fifth point in time, and can gradually change the pixel values ​​of each sub-pixel from the first value to the second value or from the second value to the first value during the predetermined period.

[0265] Referring to the example of Fig. 15, the first value may be 80, the second value may be 60, and the predetermined cycle may be 60 seconds (1 minute). Accordingly, the controller (170) may divide each cycle into multiple intervals and slightly change at least one of the R value, the G value, and the B value for each interval. The controller (170) may control the pixel value of the second region to (80, 60, 60) at the first point in time, and increase the G value by 5 every 25 seconds, which is the predetermined interval, to control the pixel value to (80, 80, 60) at the second point in time. The controller (170) can control the pixel value to (60, 80, 60) at the third time point by decreasing the R value by 5 every 25 seconds from the second time point, the B value to (60, 80, 80) at the fourth time point by increasing the B value by 5 every 25 seconds from the third time point, the G value to (60, 60, 80) at the fifth time point by decreasing the G value by 5 every 25 seconds from the fourth time point, the R value to (80, 60, 80) at the sixth time point by increasing the R value by 5 every 25 seconds from the fifth time point, and the B value to (80, 60, 60) at the seventh time point by decreasing the B value by 5 every 25 seconds from the sixth time point. Since the pixel value at the seventh time point is the same as the pixel value at the first time point, the controller (170) can repeat the above-described cycle. This has the advantage of applying stress evenly to each subpixel while minimizing user viewing disturbance, as the color being mixed into the gray image of the second area gradually changes little by little.

[0266] FIG. 16 is a flowchart illustrating an operation method of a display device according to an embodiment of the present disclosure.

[0267] The controller (170) can determine whether to perform an afterimage improvement operation (S10).

[0268] According to one embodiment, the controller (170) may decide to perform an afterimage improvement operation when the screen ratio of the content is different from the screen ratio of the display (180).

[0269] According to another embodiment, the controller (170) may decide to perform an afterimage improvement operation when the area of ​​the black area is greater than a preset size during content playback.

[0270] According to another embodiment, the controller (170) may decide to perform an afterimage improvement operation when the left and right areas of the content or the upper and lower areas of the content are recognized as black areas.

[0271] Meanwhile, the above-described embodiments are merely examples and should not be construed as being limited thereto.

[0272] When the controller (170) performs an afterimage improvement operation, it can determine the pixel value of the second area where the content is not displayed (S20).

[0273] The second area may be the remaining area excluding the content display area. Alternatively, the second area may be a black area.

[0274] The pixel value may be a pixel value described above through FIGS. 13 to 15. That is, the pixel value may be a pixel value determined such that any one of the R value, the G value, and the B value is different from the other two.

[0275] The controller (170) can display content in the first area and output an image according to the determined pixel value in the second area (S30).

[0276] The above description is merely an example of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention.

[0277] Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention but to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments.

[0278] The scope of protection of the present invention should be interpreted by the claims below, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A display having multiple pixels; and including a controller that controls the above display, The above controller Displaying content in a first area of ​​the display, and controlling the display so that one of the pixel values ​​R value, G value, and B value of each pixel in a second area adjacent to the first area is different from the other two Display device.

2. In claim 1, The above controller Two of the above R, G and B values ​​are changed at regular intervals. Display device.

3. In claim 1, The above controller Changing one subpixel with a different pixel value at regular intervals Display device.

4. In claim 3, The above controller The frequency at which the above pixel values ​​change to different sub-pixels is determined based on the user's viewing pattern. Display device.

5. In claim 1, The above controller When the above content changes, the pixel value changes any other subpixel. Display device.

6. In claim 1, The above controller When at least one of the size and position of the second region is changed, the pixel value changes one of the other sub-pixels. Display device.

7. In claim 1, The above controller Determine which subpixel has a different pixel value based on the content. Display device.

8. In claim 1, The above controller Which subpixel has a different pixel value is determined based on the accumulated stress of each subpixel. Display device.

9. In claim 1, The above controller Controlling the pixel values ​​of the pixels of the second area to one of (first value, second value, second value), (second value, first value, second value) and (second value, second value, first value) Display device.

10. In claim 9, The above controller Adjusting the gap between the first value and the second value according to the content Display device.

11. In claim 9, The above controller Adjust the above gap between 10 and 30 Display device.

12. In claim 11, The above controller The pixel values ​​of the second region are controlled to (first value, second value, second value) at a first point in time, to (first value, first value, second value) at a second point in time a predetermined period later from the first point in time, to (second value, first value, second value) at a third point in time a predetermined period later from the second point in time, to (second value, first value, second value) at a fourth point in time a predetermined period later from the third point in time, to (second value, first value, first value) at a fifth point in time a predetermined period later from the fourth point in time, to (second value, second value, first value) at a sixth point in time a predetermined period later from the fifth point in time, Gradually changing the pixel value of each subpixel from a first value to a second value or from the second value to the first value during the above predetermined period. Display device.

13. In claim 11, The first value is greater than the second value Display device.

14. In claim 1, The above controller When the screen ratio of the commercial content is different from the screen ratio of the display, the content is displayed in the first area, and one of the R value, G value, and B value, which are pixel values ​​of the second area, is controlled to be different from the other two. Display device.

15. In claim 1, The above controller The above second region is the left and right regions of the first region or the upper and lower regions of the first region. Display device.

Images