KR102366403B1 - Image display apparatus - Google Patents

Abstract

The present invention relates to an image display device. An image display apparatus according to an embodiment of the present invention includes a display and a control unit for controlling the display, wherein the display includes an organic light emitting panel including a plurality of sub-pixels, and a current detecting unit for detecting a current flowing through the sub-pixels and calculating a burn-in sub-pixel or a burn-in prediction sub-pixel in the organic light emitting panel based on the current detected by the current detector, and a current lower than the current allocated to the sub-pixels around the calculated burn-in sub-pixel or the burn-in prediction sub-pixel It includes a processor that controls the flow. Accordingly, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

Description

Image display apparatus

The present invention relates to an image display device, and more particularly, to an image display device capable of extending the overall lifespan of an image display device having an organic light emitting panel.

An image display device is a device having a function of providing an image that a user can watch. The user can view various images through the image display device.

In particular, the image display device may display a broadcast image. The image display apparatus may provide a broadcast selected by a user among broadcast signals transmitted from a broadcasting station, and such a broadcast image may be displayed on a display.

On the other hand, the image display device can display an image by providing various types of panels. Recently, the case of adopting an organic light emitting panel having a fast response speed and a clear image quality for an image display device is increasing.

Meanwhile, in the organic light emitting panel, a burn-in phenomenon occurs due to device characteristics, and accordingly, various methods for reducing the burn-in phenomenon are being studied.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image display device capable of extending the overall lifespan of an image display device having an organic light emitting panel.

An image display apparatus according to an embodiment of the present invention for achieving the above object includes a display and a controller for controlling the display, wherein the display includes an organic light emitting panel including a plurality of sub-pixels, and flowing through the sub-pixels. a current detection unit detecting a current, and calculating a burn-in sub-pixel or a burn-in prediction sub-pixel in the organic light emitting panel based on the current detected by the current detection unit, It includes a processor that controls the flow of a current lower than the allocated current.

In addition, an image display device according to another embodiment of the present invention for achieving the above object includes a display and a control unit for controlling the display, wherein the display includes an organic light emitting panel including a plurality of sub-pixels, and sub-pixels a current detection unit detecting a current flowing in It includes a processor that controls the current to flow lower than the current.

According to an embodiment of the present invention, an image display apparatus includes a display and a controller for controlling the display, wherein the display includes an organic light emitting panel including a plurality of sub-pixels, and a current for detecting a current flowing through the sub-pixels. The detector and the current detector calculate a burn-in sub-pixel or a burn-in prediction sub-pixel in the organic light emitting panel based on the detected current, and lower the current allocated to the sub-pixels around the calculated burn-in sub-pixel or the burn-in prediction sub-pixel. By including a processor for controlling the current to flow, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

In particular, by controlling the current lower than the allocated current to flow to the subpixels surrounding the calculated burn-in subpixel except for the calculated burn-in subpixel, burn-in of the subpixels around the burn-in subpixel is extended. can As a result, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

On the other hand, it is possible to control a current higher than the allocated current to flow through the calculated burn-in sub-pixel, and accordingly, it is possible to prevent a phenomenon in which a low current flows around the calculated burn-in sub-pixel, resulting in a decrease in luminance.

On the other hand, when burn-in does not occur in the organic light emitting panel, a current lower than the allocated current flows to the sub-pixels around the burn-in predicted sub-pixels, which are predicted to be burn-in. (burn in) can be extended. As a result, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

On the other hand, when burn-in does not occur in the organic light emitting panel, a current lower than the allocated current flows also in the burn-in predicted sub-pixel, so that the burn-in of the burn-in predicted sub-pixel is prolonged. can As a result, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

Meanwhile, it is possible to control a current of a second level higher than the first level to flow to a second subpixel farther than the first subpixel among subpixels around the calculated burn-in subpixel or the burn-in prediction subpixel. , by allowing a higher current to flow through the second sub-pixel, which is predicted to have a longer lifetime, it is possible to prevent a phenomenon in which the luminance is lowered.

Meanwhile, an image display device according to another embodiment of the present invention includes a display and a control unit for controlling the display, wherein the display includes an organic light emitting panel including a plurality of sub-pixels, and the sub-pixels. A current detector for detecting a flowing current, and a subpixel with the largest accumulated current amount of the organic light emitting panel is calculated based on the current detected by the current detector, and the current allocated to the subpixels around the subpixel with the largest accumulated current amount By including a processor for controlling a lower current to flow, it is possible to extend the overall lifespan of the image display device including the organic light emitting panel.

In particular, by controlling the current to flow at a lower level to the sub-pixel with the largest accumulated current, and a lower level of current flows to the sub-pixels adjacent to the sub-pixel with the largest accumulated current as it approaches the sub-pixel with the largest amount of accumulated current, the overall lifespan of the image display device including the organic light emitting panel can be extended.

1 is a diagram illustrating an image display device according to an embodiment of the present invention.
FIG. 2 is an example of an internal block diagram of the image display device of FIG. 1 .
FIG. 3 is an example of an internal block diagram of the control unit of FIG. 2 .
FIG. 4A is a diagram illustrating a control method of the remote control device of FIG. 2 .
4B is an internal block diagram of the remote control device of FIG. 2 .
Fig. 5 is an internal block diagram of the display of Fig. 2;
6A to 6B are diagrams referenced in the description of the organic light emitting panel of FIG. 5 .
7A to 8B are diagrams referenced to explain a burn-in phenomenon in an image display device including an organic light emitting panel.
9 is a flowchart illustrating an example of a method of operating an image display apparatus according to an embodiment of the present invention.
10 is a flowchart illustrating another example of an operating method of an image display apparatus according to an embodiment of the present invention.
11 to 13 are diagrams referenced to explain the operation method of FIG. 9 or FIG. 10 .

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

The suffixes “module” and “part” for the components used in the following description are given simply in consideration of the ease of writing the present specification, and do not impart a particularly important meaning or role by themselves. Accordingly, the terms “module” and “unit” may be used interchangeably.

1 is a diagram illustrating an image display device according to an embodiment of the present invention.

Referring to the drawings, the image display apparatus 100 may include a display 180 .

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), and the like.

In the present invention, the display 180 includes an organic light emitting panel (OLED panel), and reduces burn-in that may occur in the organic light emitting panel (OLED panel), thereby extending the overall lifespan of the image display device. suggest ways to do it.

According to an embodiment of the present invention, the image display device 100 includes a display 180 and a controller 170 for controlling the display 180, and the display 180 includes a plurality of sub-pixels. Based on the organic light emitting panel 210 , the current detecting unit 1110 detecting a current flowing in the subpixel, and the current detected by the current detecting unit 1110 , predicting burn-in sub-pixel or burn-in in the organic light emitting panel 210 . The organic light emitting panel 210 is provided by including a processor 270 that calculates a subpixel and controls a current lower than the allocated current to flow in a subpixel around the calculated burn-in subpixel or the burn-in prediction subpixel It is possible to extend the overall lifespan of the image display device 100 .

In particular, by controlling the current lower than the allocated current to flow to the subpixels surrounding the calculated burn-in subpixel except for the calculated burn-in subpixel, burn-in of the subpixels around the burn-in subpixel is extended. can As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

On the other hand, it is possible to control a current higher than the allocated current to flow through the calculated burn-in sub-pixel, and accordingly, it is possible to prevent a phenomenon in which a low current flows around the calculated burn-in sub-pixel, resulting in a decrease in luminance.

On the other hand, when burn-in does not occur in the organic light emitting panel 210 , a current lower than the allocated current flows to the sub-pixels around the burn-in predicted sub-pixels, which are predicted to be burn-in, so that the sub-pixels around the burn-in prediction sub-pixels are controlled to flow. It can cause the burn-in of the pixel to be prolonged. As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

On the other hand, when burn-in does not occur in the organic light emitting panel 210 , a current lower than the allocated current flows even in the burn-in predicted sub-pixels, so that burn-in of the burn-in predicted sub-pixels is reduced. can be extended. As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

On the other hand, the image display apparatus 100 according to another embodiment of the present invention, the image display apparatus 100 includes a display 180 and a controller 170 for controlling the display 180, the display 180 ) is an organic light emitting panel ( 210) and includes a processor 270 that calculates the sub-pixel with the largest accumulated current and controls a current lower than the allocated current to flow through the sub-pixels around the sub-pixel with the largest accumulated current. It is possible to extend the overall lifespan of the image display device 100 having the 210 .

Various operating methods of the above-described image display apparatus 100 will be described in more detail with reference to FIG. 9 or less.

Meanwhile, the image display device 100 of FIG. 1 may be a monitor, a TV, a tablet PC, a mobile terminal, or the like.

FIG. 2 is an example of an internal block diagram of the image display device of FIG. 1 .

Referring to FIG. 2 , the image display device 100 according to an embodiment of the present invention includes a broadcast receiving unit 105 , an external device interface unit 130 , a storage unit 140 , a user input interface unit 150 , It may include a sensor unit (not shown), a control unit 170 , a display 180 , and an audio output unit 185 .

The broadcast reception unit 105 may include a tuner unit 110 , a demodulator unit 120 , a network interface unit 130 , and an external device interface unit 135 .

Meanwhile, the broadcast receiving unit 105 may include only the tuner unit 110 , the demodulator 120 , and the external device interface unit 135 , unlike the drawing. That is, the network interface unit 130 may not be included.

The tuner unit 110 selects an RF broadcast signal corresponding to a channel selected by a user or all channels previously stored among RF (Radio Frequency) broadcast signals received through an antenna (not shown). In addition, the selected RF broadcast signal is converted into an intermediate frequency signal or a baseband video or audio signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF), and if the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or audio signal (CVBS/SIF). That is, the tuner unit 110 may process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS/SIF) output from the tuner unit 110 may be directly input to the control unit 170 .

Meanwhile, the tuner unit 110 may include a plurality of tuners in order to receive broadcast signals of a plurality of channels. Alternatively, a single tuner that simultaneously receives broadcast signals of a plurality of channels is also possible.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

The demodulator 120 may output a stream signal TS after demodulation and channel decoding are performed. In this case, the stream signal may be a signal obtained by multiplexing an image signal, an audio signal, or a data signal.

The stream signal output from the demodulator 120 may be input to the controller 170 . After performing demultiplexing, image/audio signal processing, and the like, the controller 170 outputs an image to the display 180 and outputs an audio to the audio output unit 185 .

The external device interface unit 130 may transmit or receive data to or from a connected external device (not shown), for example, the set-top box 50 . To this end, the external device interface unit 130 may include an A/V input/output unit (not shown).

The external device interface unit 130 may be connected to an external device such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), set-top box, and the like by wire/wireless, , it is also possible to perform input/output operations with an external device.

The A/V input/output unit may receive video and audio signals from an external device. Meanwhile, the wireless communication unit (not shown) may perform short-range wireless communication with other electronic devices.

Through such a wireless communication unit (not shown), the external device interface unit 130 may exchange data with the adjacent mobile terminal 600 . In particular, the external device interface unit 130 may receive device information, executed application information, an application image, and the like, from the mobile terminal 600 in the mirroring mode.

The network interface unit 135 provides an interface for connecting the image display device 100 to a wired/wireless network including an Internet network. For example, the network interface unit 135 may receive content or data provided by the Internet or a content provider or network operator through a network.

Meanwhile, the network interface unit 135 may include a wireless communication unit (not shown).

The storage unit 140 may store a program for each signal processing and control in the control unit 170 , or may store a signal-processed image, audio, or data signal.

Also, the storage unit 140 may perform a function for temporarily storing an image, audio, or data signal input to the external device interface unit 130 . Also, the storage unit 140 may store information about a predetermined broadcast channel through a channel storage function such as a channel map.

Although the embodiment in which the storage unit 140 of FIG. 2 is provided separately from the control unit 170 is illustrated, the scope of the present invention is not limited thereto. The storage unit 140 may be included in the control unit 170 .

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or transmits a signal from the control unit 170 to the user.

For example, transmit/receive user input signals such as power on/off, channel selection, and screen setting from the remote control device 200, or local keys (not shown) such as power key, channel key, volume key, and setting value transmits a user input signal input from the to the control unit 170, transmits a user input signal input from a sensor unit (not shown) that senses a user's gesture to the control unit 170, or transmits a signal from the control unit 170 It can transmit to a sensor unit (not shown).

The control unit 170 demultiplexes an input stream through the tuner unit 110 or the demodulator 120 , the network interface unit 135 or the external device interface unit 130 , or processes the demultiplexed signals. , it is possible to generate and output a signal for video or audio output.

The image signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the image signal. Also, the image signal processed by the controller 170 may be input to an external output device through the external device interface unit 130 .

The audio signal processed by the control unit 170 may be outputted to the audio output unit 185 . Also, the audio signal processed by the control unit 170 may be input to an external output device through the external device interface unit 130 .

Although not shown in FIG. 2 , the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG. 3 .

In addition, the controller 170 may control overall operations in the image display apparatus 100 . For example, the controller 170 may control the tuner unit 110 to select a channel selected by the user or an RF broadcast corresponding to a pre-stored channel (tuning).

Also, the control unit 170 may control the image display apparatus 100 according to a user command input through the user input interface unit 150 or an internal program.

Meanwhile, the controller 170 may control the display 180 to display an image. In this case, the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, the controller 170 may cause a predetermined object to be displayed in the image displayed on the display 180 . For example, the object may be at least one of an accessed web screen (newspaper, magazine, etc.), an Electronic Program Guide (EPG), various menus, widgets, icons, still images, moving pictures, and text.

Meanwhile, the controller 170 may recognize the location of the user based on the image captured by the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 may be determined. In addition, an x-axis coordinate and a y-axis coordinate in the display 180 corresponding to the user's location may be identified.

The display 180 converts an image signal, a data signal, an OSD signal, a control signal, or an image signal, a data signal, and a control signal received from the external device interface unit 130 processed by the controller 170 to generate a driving signal. create

Meanwhile, the display 180 may be configured as a touch screen and used as an input device in addition to an output device.

The audio output unit 185 receives the audio-processed signal from the control unit 170 and outputs it as audio.

The photographing unit (not shown) photographs the user. The photographing unit (not shown) may be implemented with one camera, but is not limited thereto, and may be implemented with a plurality of cameras. Image information captured by the photographing unit (not shown) may be input to the control unit 170 .

The controller 170 may detect a user's gesture based on each or a combination of an image captured by a photographing unit (not shown) or a signal sensed from a sensor unit (not shown).

The power supply unit 190 supplies the corresponding power to the entire image display device 100 . In particular, it is possible to supply power to the control unit 170 that can be implemented in the form of a system on chip (SOC), the display 180 for displaying an image, and the audio output unit 185 for outputting audio. there is.

Specifically, the power supply unit 190 may include a converter that converts AC power into DC power, and a dc/dc converter that converts the level of DC power.

The remote control device 200 transmits a user input to the user input interface unit 150 . To this end, the remote control device 200 may use Bluetooth (Bluetooth), Radio Frequency (RF) communication, infrared (IR) communication, Ultra Wideband (UWB), ZigBee, or the like. In addition, the remote control device 200 may receive an image, audio, or data signal output from the user input interface unit 150 , and display it or output the audio signal from the remote control device 200 .

Meanwhile, the above-described image display device 100 may be a digital broadcasting receiver capable of receiving fixed or mobile digital broadcasting.

Meanwhile, the block diagram of the image display device 100 shown in FIG. 2 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display device 100 that are actually implemented. That is, two or more components may be combined into one component, or one component may be subdivided into two or more components as needed. In addition, the function performed by each block is for explaining the embodiment of the present invention, and the specific operation or device does not limit the scope of the present invention.

FIG. 3 is an example of an internal block diagram of the control unit of FIG. 2 .

Referring to the drawings, the controller 170 according to an embodiment of the present invention includes a demultiplexer 310 , an image processor 320 , a processor 330 , an OSD generator 340 , and a mixer 345 . , a frame rate converter 350 , and a formatter 360 . In addition, it may further include an audio processing unit (not shown) and a data processing unit (not shown).

The demultiplexer 310 demultiplexes an input stream. For example, when MPEG-2 TS is input, it can be demultiplexed and separated into video, audio and data signals, respectively. Here, the stream signal input to the demultiplexer 310 may be a stream signal output from the tuner unit 110 , the demodulator 120 , or the external device interface unit 130 .

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

The image decoder 325 decodes the demultiplexed image signal, and the scaler 335 performs scaling to output the resolution of the decoded image signal on the display 180 .

The video decoder 325 may include decoders of various standards. For example, it may include an MPEG-2, H,264 decoder, a 3D image decoder for a color image and a depth image, a decoder for a multi-view image, and the like.

The processor 330 may control overall operations in the image display device 100 or in the controller 170 . For example, the processor 330 may control the tuner 110 to select a channel selected by the user or an RF broadcast corresponding to a pre-stored channel (Tuning).

Also, the processor 330 may control the image display apparatus 100 according to a user command input through the user input interface unit 150 or an internal program.

In addition, the processor 330 may perform data transmission control with the network interface unit 135 or the external device interface unit 130 .

In addition, the processor 330 may control operations of the demultiplexer 310 , the image processor 320 , the OSD generator 340 , and the like in the controller 170 .

The OSD generator 340 generates an OSD signal according to a user input or by itself. For example, a signal for displaying various types of information as graphics or text on the screen of the display 180 may be generated based on a user input signal. The generated OSD signal may include various data such as a user interface screen of the image display device 100 , various menu screens, widgets, and icons. Also, the generated OSD signal may include a 2D object or a 3D object.

Also, the OSD generator 340 may generate a pointer that can be displayed on a display based on a pointing signal input from the remote control device 200 . In particular, such a pointer may be generated by a pointing signal processing unit, and the OSD generation unit 240 may include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) may be provided separately instead of being provided in the OSD generating unit 240 .

The mixer 345 may mix the OSD signal generated by the OSD generator 340 and the decoded image signal image-processed by the image processor 320 . The mixed video signal is provided to the frame rate converter 350 .

A frame rate converter (FRC) 350 may convert a frame rate of an input image. On the other hand, the frame rate converter 350 may output as it is without a separate frame rate conversion.

Meanwhile, the formatter 360 may change the format of an input image signal into an image signal for display on a display and output the changed format.

The formatter 360 may change the format of the video signal. For example, the format of the 3D video signal is a Side by Side format, a Top / Down format, a Frame Sequential format, an Interlaced format, and a Checker Box. It can be changed to any one of various 3D formats, such as a format.

Meanwhile, the audio processing unit (not shown) in the controller 170 may perform audio processing of the demultiplexed audio signal. To this end, the audio processing unit (not shown) may include various decoders.

In addition, the audio processing unit (not shown) in the control unit 170 may process a base (Base), a treble (Treble), volume control, and the like.

A data processing unit (not shown) in the control unit 170 may perform data processing of the demultiplexed data signal. For example, when the demultiplexed data signal is an encoded data signal, it may be decoded. The encoded data signal may be electronic program guide information including broadcast information such as start time and end time of a broadcast program aired on each channel.

Meanwhile, a block diagram of the controller 170 shown in FIG. 3 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specification of the controller 170 that is actually implemented.

In particular, the frame rate converter 350 and the formatter 360 are not provided in the controller 170 , but may be separately provided or provided separately as one module.

FIG. 4A is a diagram illustrating a control method of the remote control device of FIG. 2 .

As shown in (a) of FIG. 4A , it is exemplified that a pointer 205 corresponding to the remote control device 200 is displayed on the display 180 .

The user may move or rotate the remote control device 200 up and down, left and right (FIG. 4A (b)), back and forth (FIG. 4A (c)). The pointer 205 displayed on the display 180 of the image display device corresponds to the movement of the remote control device 200 . As shown in the drawing, the remote control device 200 may be called a space remote controller or a 3D pointing device because the corresponding pointer 205 is moved and displayed according to movement in 3D space.

4A (b) illustrates that when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display 180 of the image display device also moves to the left correspondingly.

Information about the movement of the remote control device 200 sensed through the sensor of the remote control device 200 is transmitted to the image display device. The image display device may calculate the coordinates of the pointer 205 from information about the movement of the remote control device 200 . The image display device may display the pointer 205 to correspond to the calculated coordinates.

4A ( c ) illustrates a case in which the user moves the remote control device 200 away from the display 180 while pressing a specific button in the remote control device 200 . Accordingly, the selected area in the display 180 corresponding to the pointer 205 may be zoomed in and displayed. Conversely, when the user moves the remote control device 200 closer to the display 180 , the selected area in the display 180 corresponding to the pointer 205 may be zoomed out and displayed. Meanwhile, when the remote control apparatus 200 moves away from the display 180 , the selection area is zoomed out, and when the remote control apparatus 200 approaches the display 180 , the selection area may be zoomed in.

On the other hand, while a specific button in the remote control device 200 is pressed, recognition of vertical and horizontal movements may be excluded. That is, when the remote control device 200 moves away from or close to the display 180 , up, down, left, and right movements are not recognized, but only forward and backward movements may be recognized. In a state in which a specific button in the remote control device 200 is not pressed, only the pointer 205 moves according to the up, down, left, and right movements of the remote control device 200 .

Meanwhile, the moving speed or moving direction of the pointer 205 may correspond to the moving speed or moving direction of the remote control device 200 .

4B is an internal block diagram of the remote control device of FIG. 2 .

Referring to the drawings, the remote control device 200 includes a wireless communication unit 425 , a user input unit 435 , a sensor unit 440 , an output unit 450 , a power supply unit 460 , a storage unit 470 , A control unit 480 may be included.

The wireless communication unit 425 transmits/receives a signal to and from any one of the image display devices according to the embodiments of the present invention described above. Among the image display apparatuses according to embodiments of the present invention, one image display apparatus 100 will be described as an example.

In this embodiment, the remote control device 200 may include an RF module 421 capable of transmitting and receiving a signal to and from the image display device 100 according to the RF communication standard. In addition, the remote control device 200 may include an IR module 423 capable of transmitting and receiving signals to and from the image display device 100 according to the IR communication standard.

In the present embodiment, the remote control device 200 transmits a signal containing information about the movement of the remote control device 200 to the image display device 100 through the RF module 421 .

Also, the remote control device 200 may receive a signal transmitted by the image display device 100 through the RF module 421 . In addition, the remote control device 200 may transmit commands related to power on/off, channel change, volume change, etc. to the image display device 100 through the IR module 423 as necessary.

The user input unit 435 may include a keypad, a button, a touch pad, or a touch screen. The user may input a command related to the image display apparatus 100 to the remote control apparatus 200 by manipulating the user input unit 435 . When the user input unit 435 includes a hard key button, the user may input a command related to the image display device 100 to the remote control device 200 through a push operation of the hard key button. When the user input unit 435 includes a touch screen, the user may input a command related to the image display apparatus 100 to the remote control apparatus 200 by touching a soft key of the touch screen. In addition, the user input unit 435 may include various types of input means that the user can operate, such as a scroll key or a jog key, and this embodiment does not limit the scope of the present invention.

The sensor unit 440 may include a gyro sensor 441 or an acceleration sensor 443 . The gyro sensor 441 may sense information about the movement of the remote control device 200 .

For example, the gyro sensor 441 may sense information about the operation of the remote control device 200 based on x, y, and z axes. The acceleration sensor 443 may sense information about the moving speed of the remote control device 200 . On the other hand, it may further include a distance measuring sensor, whereby the distance to the display 180 can be sensed.

The output unit 450 may output an image or audio signal corresponding to an operation of the user input unit 435 or a signal transmitted from the image display apparatus 100 . Through the output unit 450 , the user may recognize whether the user input unit 435 is operated or whether the image display apparatus 100 is controlled.

As an example, the output unit 450 includes an LED module 451 that is turned on when the user input unit 435 is manipulated or a signal is transmitted and received with the image display device 100 through the wireless communication unit 425, and a vibration module that generates vibration ( 453), a sound output module 455 for outputting a sound, or a display module 457 for outputting an image may be provided.

The power supply unit 460 supplies power to the remote control device 200 . The power supply unit 460 may reduce power consumption by stopping the power supply when the remote control device 200 does not move for a predetermined period of time. The power supply unit 460 may resume power supply when a predetermined key provided in the remote control device 200 is operated.

The storage unit 470 may store various types of programs and application data required for control or operation of the remote control device 200 . If the remote control device 200 wirelessly transmits and receives a signal through the image display device 100 and the RF module 421, the remote control device 200 and the image display device 100 transmit the signal through a predetermined frequency band. send and receive The control unit 480 of the remote control device 200 stores information about a frequency band in which a signal can be wirelessly transmitted and received with the image display device 100 paired with the remote control device 200 in the storage unit 470 and can refer to

The control unit 480 controls all matters related to the control of the remote control device 200 . The control unit 480 transmits a signal corresponding to a predetermined key operation of the user input unit 435 or a signal corresponding to the movement of the remote control device 200 sensed by the sensor unit 440 through the wireless communication unit 425 to the image display device. (100) can be transmitted.

The user input interface unit 150 of the image display device 100 includes a wireless communication unit 151 capable of wirelessly transmitting and receiving signals with the remote control device 200 , and a pointer corresponding to the operation of the remote control device 200 . A coordinate value calculating unit 415 capable of calculating a coordinate value of may be provided.

The user input interface unit 150 may wirelessly transmit/receive a signal to and from the remote control device 200 through the RF module 412 . Also, a signal transmitted by the remote control device 200 according to the IR communication standard may be received through the IR module 413 .

The coordinate value calculator 415 corrects hand shake or an error from the signal corresponding to the operation of the remote control device 200 received through the wireless communication unit 151 and displays the coordinate value of the pointer 205 on the display 170 . (x,y) can be calculated.

The remote control apparatus 200 transmission signal input to the image display apparatus 100 through the user input interface 150 is transmitted to the controller 180 of the image display apparatus 100 . The controller 180 may determine information about the operation and key manipulation of the remote control device 200 from the signal transmitted from the remote control device 200 , and control the image display device 100 in response thereto.

As another example, the remote control device 200 may calculate a pointer coordinate value corresponding to the operation and output it to the user input interface unit 150 of the image display device 100 . In this case, the user input interface 150 of the image display apparatus 100 may transmit information about the received pointer coordinate values to the controller 180 without a separate hand shake or error correction process.

Also, as another example, the coordinate value calculating unit 415 may be provided inside the control unit 170 instead of the user input interface unit 150 unlike the drawing.

Fig. 5 is an internal block diagram of the display of Fig. 2;

Referring to the drawings, the organic light emitting panel-based display 180 includes an organic light emitting panel 210 , a first interface unit 230 , a second interface unit 231 , a timing controller 232 , and a gate driver 234 . , a data driver 236 , a memory 240 , a processor 270 , a power supply 290 , a current detector 1110 , and the like.

The display 180 may receive the image signal Vd, the first DC power V1 and the second DC power V2, and display a predetermined image based on the image signal Vd.

Meanwhile, the first interface unit 230 in the display 180 may receive the image signal Vd and the first DC power V1 from the control unit 170 .

Here, the first DC power V1 may be used for the operation of the power supply unit 290 in the display 180 and the timing controller 232 .

Next, the second interface unit 231 may receive the second DC power V2 from the external power supply unit 190 . Meanwhile, the second DC power V2 may be input to the data driver 236 in the display 180 .

The timing controller 232 may output a data driving signal Sda and a gate driving signal Sga based on the image signal Vd.

For example, when the first interface unit 230 converts the input image signal Vd and outputs the converted image signal va1 , the timing controller 232 performs the conversion based on the converted image signal va1 . Accordingly, the data driving signal Sda and the gate driving signal Sga may be output.

The timing controller 232 may further receive a control signal, a vertical synchronization signal Vsync, etc. in addition to the video signal Vd from the controller 170 .

In addition, the timing controller 232 includes a gate driving signal Sga and data for the operation of the gate driver 234 based on a control signal, a vertical synchronization signal Vsync, etc. in addition to the video signal Vd. The data driving signal Sda for the operation of the driving unit 236 may be output.

Meanwhile, the timing controller 232 may further output the control signal Cs to the gate driver 234 .

The gate driver 234 and the data driver 236 are connected to each other through the gate line GL and the data line DL according to the gate driving signal Sga and the data driving signal Sda from the timing controller 232 , respectively. , a scan signal and an image signal are supplied to the organic light emitting panel 210 . Accordingly, the organic light emitting panel 210 displays a predetermined image.

Meanwhile, the organic light emitting panel 210 may include an organic light emitting layer, and in order to display an image, a plurality of gate lines GL and data lines DL are provided in a matrix form in each pixel corresponding to the organic light emitting layer. They may be intersected.

Meanwhile, the data driver 236 may output a data signal to the organic light emitting panel 210 based on the second DC power V2 from the second interface unit 231 .

The power supply unit 290 may supply various types of power to the gate driver 234 , the data driver 236 , the timing controller 232 , and the like.

The current detector 1110 may detect a current flowing through the sub-pixels of the organic light emitting panel 210 . The detected current may be input to the processor 270 or the like for accumulative current calculation.

The processor 270 may perform various types of control within the display 180 . For example, the gate driver 234 , the data driver 236 , the timing controller 232 , and the like may be controlled.

Meanwhile, the processor 270 may receive, from the current detector 1110 , information on the current flowing through the subpixels of the organic light emitting panel 210 .

In addition, the processor 270 may calculate the accumulated current of the subpixels of each organic light emitting panel 210 based on information on the current flowing through the subpixels of the organic light emitting panel 210 . The calculated accumulated current may be stored in the memory 240 .

On the other hand, when the accumulated current of the sub-pixels of each organic light emitting panel 210 is equal to or greater than an allowable value, the processor 270 may determine that it is burn-in.

For example, when the accumulated current of the sub-pixels of each organic light emitting panel 210 is 300000 A or more, the processor 270 may determine that the sub-pixels are burned-in.

Meanwhile, when the accumulated current of some subpixels among the subpixels of each organic light emitting panel 210 approaches an allowable value, the processor 270 may determine the corresponding subpixel as a subpixel in which burn-in is predicted. .

Meanwhile, the processor 270 may determine the subpixel having the largest accumulated current as the burn-in prediction subpixel based on the current detected by the current detector 1110 .

Meanwhile, the processor 270 calculates a burn-in sub-pixel or a burn-in predicted sub-pixel in the organic light emitting panel 210 based on the current detected by the current detector 1110 , and the calculated burn-in sub-pixel or burn-in predicted sub-pixel A current lower than the allocated current may be controlled to flow through the surrounding sub-pixels. Accordingly, the burn-in of the sub-pixels around the burn-in sub-pixels may be extended. As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

On the other hand, the processor 270 may control a current higher than the allocated current to flow through the calculated burn-in sub-pixel. Accordingly, a low current flows around the calculated burn-in sub-pixel to prevent a decrease in luminance. can be prevented

Meanwhile, in the organic light emitting panel 210 , when burn-in does not occur, the processor 270 controls a current lower than the allocated current to flow through the sub-pixels around the burn-in predicted sub-pixels, which are predicted to be burn-in. It can cause the burn in of subpixels around the prediction subpixels to be prolonged. As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

Meanwhile, the processor 270 may control a data voltage lower than the allocated data voltage to be applied to the subpixels surrounding the calculated burn-in subpixel or the burn-in prediction subpixel.

Meanwhile, in the organic light emitting panel 210 , when burn-in does not occur, the processor 270 controls the burn-in predicted sub-pixel to flow a current lower than the allocated current to the burn-in predicted sub-pixel. Burn in may be prolonged. As a result, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

Meanwhile, the processor 270 controls a current of a second level higher than the first level to flow to a second subpixel farther than the first subpixel among the subpixels surrounding the calculated burn-in subpixel or the burn-in prediction subpixel. Accordingly, by allowing a higher current to flow through the second sub-pixel, which is predicted to have a longer lifespan, it is possible to prevent a phenomenon in which the luminance is lowered.

Meanwhile, the processor 270 calculates a subpixel with the largest accumulated current amount of the organic light emitting panel 210 based on the current detected by the current detector 1110 , and subpixels around the subpixel with the largest accumulated current amount In this case, it is possible to control a current lower than the allocated current to flow. Accordingly, it is possible to extend the overall lifespan of the image display device 100 including the organic light emitting panel 210 .

On the other hand, the processor 270 controls the lower level of current to flow to the sub-pixel with the largest accumulated current, and to the sub-pixels surrounding the sub-pixel with the largest accumulated current as it approaches the sub-pixel with the largest amount of accumulated current. It is possible to extend the overall lifespan of the image display device 100 having

The operation of the processor 270 and the like will be described in more detail with reference to FIG. 9 or less.

6A to 6B are diagrams referenced in the description of the organic light emitting panel of FIG. 5 .

First, FIG. 6A is a diagram illustrating a pixel in the organic light emitting panel 210 .

Referring to the drawing, the organic light emitting panel 210 includes a plurality of scan lines (Scan 1 to Scan n) and a plurality of data lines (R1, G1, B1, W1 to Rm, Gm, Bm, Wm) intersecting them. can be provided.

Meanwhile, a pixel (subpixel) is defined in an area where the scan line and the data line in the organic light emitting panel 210 intersect. The figure shows a pixel including sub-pixels SR1, SG1, SB1, SW1 of RGBW.

FIG. 6B illustrates a circuit of any one sub-pixel within a pixel of the organic light emitting panel of FIG. 6A .

Referring to the drawing, the organic light emitting sub-pixel circuit CRT, as an active type, may include a switching transistor SW1, a storage capacitor Cst, a driving transistor SW2, and an organic light emitting layer OLED. .

The switching transistor SW1 has a scan line connected to a gate terminal and is turned on according to an input scan signal Vdscan. When turned on, the input data signal Vdata is transferred to the gate terminal of the driving transistor SW2 or one end of the storage capacitor Cst.

The storage capacitor Cst is formed between the gate terminal and the source terminal of the driving transistor SW2, and the data signal level transmitted to one end of the storage capacitor Cst and the DC power transmitted to the other end of the storage capacitor Cst (VDD) stores a predetermined difference in level.

For example, when the data signal has different levels according to the Plus Amplitude Modulation (PAM) method, the level of the power stored in the storage capacitor Cst is changed according to the level difference of the data signal Vdata.

As another example, when the data signal has different pulse widths according to the PWM (Pluse Width Modulation) method, the power level stored in the storage capacitor Cst varies according to the difference in the pulse widths of the data signal Vdata.

The driving transistor SW2 is turned on according to the power level stored in the storage capacitor Cst. When the driving transistor SW2 is turned on, a driving current IOLED, which is proportional to the stored power level, flows through the organic light emitting layer OLED. Accordingly, the organic light emitting layer OLED performs a light emitting operation.

The organic light emitting layer (OLED) includes an emission layer (EML) of RGBW corresponding to a sub-pixel, and includes 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). It may include, and in addition to may include a hole blocking layer and the like.

Meanwhile, all of the sub-pixels output white light from the organic light-emitting layer (OLED), but in the case of green, red, and blue sub-pixels, a separate color filter is provided for color realization. That is, in the case of green, red, and blue sub-pixels, green, red, and blue color filters are further provided, respectively. On the other hand, in the case of a white sub-pixel, since white light is output, a separate color filter is not required.

On the other hand, in the drawing, as the switching transistor SW1 and the driving transistor SW2, a case of a p-type MOSFET is exemplified, but an n-type MOSFET or other switching elements such as JFET, IGBT, or SIC are used. It is also possible

Meanwhile, a pixel is a hold-type device that continuously emits light from the organic light emitting layer OLED after a scan signal is applied during a unit display period, specifically, during a unit frame.

Meanwhile, as a current flows in the organic light emitting layer (OLED) disposed in each sub-pilel shown in FIG. 6B , light is emitted, but burn-in occurs according to the accumulated current. The burn-in phenomenon will be described with reference to FIGS. 7A to 8B .

7A to 8B are diagrams referenced to explain a burn-in phenomenon in an image display device including an organic light emitting panel.

First, referring to FIG. 7A , when the accumulated current flowing in the first point Px1 of the display 180 of the image display device 100 is greater than or equal to the allowable value, as described above, due to consumption of the organic light emitting layer (OLED), Burn-in may occur.

On the other hand, the second region Oy1 and the third region Pz1 around the first point Px1 also have a high possibility of burn-in.

FIG. 7B illustrates accumulated current graphs GPx1, GPy1, and GPz1 for each of the first point Px1, the second region Oy1, and the third region Pz1.

Meanwhile, FIG. 8A shows that the Ara region including the burn-in point of Pk has a burn-in probability of a Gaussian distribution.

Meanwhile, FIG. 8B shows that the Ara region including the Pt burn-in point where the logo is displayed has a burn-in probability of a Gaussian distribution.

8A and 8B, since the burn-in probability has a Gaussian distribution around the burn-in point, in the present invention, the burn-in probability around the burn-in point is lowered to increase the lifespan of the liquid crystal display panel. suggest a way This will be described with reference to FIG. 9 and the like.

9 is a flowchart showing an example of an operating method of an image display device according to an embodiment of the present invention, and FIG. 10 is a flowchart showing another example of an operating method of an image display device according to an embodiment of the present invention, and FIGS. 11 to FIG. 13 is a diagram referenced to explain the operation method of FIG. 9 or FIG. 10 .

First, referring to FIG. 9 , the current detector 1110 of FIG. 11 may detect current information flowing through a subpixel of the organic light emitting panel 210 ( S910 ).

The organic light emitting sub-pixel circuit CRTa of FIG. 11 is an active type, and in addition to the switching transistor SW1, the storage capacitor Cst, the driving transistor SW2, and the organic light emitting layer OLED, for detection A transistor SW3 and a current detection unit 1110 may be provided.

In particular, the detection transistor SW3 and the current detection unit 1110 may be disposed in parallel to the organic light emitting layer OLED.

Then, when the detection transistor SW3 is turned on, a partial current Isen of the current flowing into the organic light emitting layer OLED flows in the direction of the detection transistor SW3 and the current detection unit 1110 .

The current detector 1110 may detect the detected current ISen and transmit the converted electrical signal Sds to the processor 270 .

In addition, the processor 270 may receive, from the current detector 1110 , an electric signal Sds including current information flowing in the subpixels of the organic light emitting panel 210 .

Next, the processor 270 may calculate the accumulated current of the subpixels of each organic light emitting panel 210 based on information on the current flowing through the subpixels of the organic light emitting panel 210 .

On the other hand, when the accumulated current of the sub-pixels of each organic light emitting panel 210 is equal to or greater than an allowable value, the processor 270 may determine that it is burn-in.

For example, when the accumulated current of the sub-pixels of each organic light emitting panel 210 is 300000 A or more, the processor 270 may determine that the sub-pixels are burned-in.

That is, the processor 270 may calculate a burn-in pixel based on current information flowing through the sub-pixels of the organic light emitting panel 210 ( S920 ).

Meanwhile, the processor 270 may control a current lower than the allocated current to flow through the subpixels around the calculated burn-in subpixel ( S930 ). Accordingly, it is possible to delay the burn-in phenomenon of the sub-pixels around the burn-in sub-pixels.

Next, the processor 270 may control a current higher than the allocated current to flow through the calculated burn-in sub-pixel ( S940 ). Accordingly, it is possible to prevent a decrease in luminance due to a lowered current in the surrounding sub-pixels.

Meanwhile, when the data signal is a PAM signal, the processor 270 may control a data voltage lower than the allocated data voltage to be applied to subpixels around the calculated burn-in subpixel.

Meanwhile, when the data signal is a PWM duty signal, the processor 270 may control the PWM signal having a duty smaller than the assigned duty to be applied to the subpixels around the calculated burn-in subpixel.

Meanwhile, the processor 270 controls a current of a first level to flow in a first sub-pixel among sub-pixels surrounding the calculated burn-in sub-pixel, and controls the first sub-pixel among sub-pixels surrounding the calculated burn-in sub-pixel. A second level of current higher than the first level may be controlled to flow to a second subpixel that is farther away.

Meanwhile, the processor 270 may control the current to flow at a lower level to the sub-pixels surrounding the calculated burn-in sub-pixel as it approaches the burn-in sub-pixel.

Meanwhile, the processor 270 controls a first level of current to flow to a first sub-pixel among sub-pixels surrounding a sub-pixel having the largest accumulated current amount, and the processor 270 controls a first-level current to flow through a second sub-pixel among the sub-pixels surrounding the sub-pixel having the largest accumulated current amount. A current of a second level higher than the first level may be controlled to flow to a second subpixel farther than the first subpixel.

Meanwhile, the processor 270 may control a current of a lower level to flow to a subpixel having the largest accumulated current amount, and to a subpixel adjacent to the subpixel having the largest accumulated current amount as it approaches the subpixel having the largest accumulated current amount.

Meanwhile, when the data signal is a PAM signal, the processor 270 may control a data voltage higher than the allocated data voltage to be applied to the calculated burn-in sub-pixel.

Meanwhile, when the data signal is a PWM duty signal, the processor 270 may control the PWM signal having a duty greater than the assigned duty to be applied to the calculated burn-in sub-pixel.

12A illustrates a display 180 that includes an Ara region that includes a burned-in Pk point.

The processor 270 may control a current higher than a current allocated to the burned-in Pk subpixel to flow. That is, as shown in (a) of FIG. 12B , it is possible to control the flow of Ikb current, which is at a higher level than the allocated Ika.

For example, the processor 270 may control a current of 15A instead of 10A to flow through the burned-in PK subpixel.

Next, the processor 270 may control a current lower than the allocated current to flow in the Pk2 subpixels around the Pk subpixels. That is, as shown in (b) of FIG. 12B , it is possible to control the Ik2b current, which is at a lower level than the allocated Ik2a, to flow.

For example, the processor 270 may control the Pk2 subpixel to flow a current of 5A instead of 10A.

Next, the processor 270 may control a current lower than the allocated current to flow through the Pk3 subpixels around the Pk subpixels. That is, as shown in (c) of FIG. 12B , it is possible to control the Ik3b current, which is at a lower level than the allocated Ik3a, to flow.

For example, the processor 270 may control the Pk3 subpixel to flow a current of 6A instead of 10A.

That is, the processor 270 may control the Pk3 subpixel further away from the Pk2 subpixel to flow a higher current to the Pk3 subpixel farther than the Pk2 subpixel because the accumulated current amount is smaller. Accordingly, it is possible to adjust the overall amount of accumulated current to be similar, and consequently, it is possible to extend the lifespan of the organic light emitting panel.

12C illustrates the display 180 including the Ara region including the burned-in Pt point due to the logo display.

The processor 270 may control a current higher than a current allocated to the burned-in Pt subpixel to flow. That is, as shown in (a) of FIG. 12D , it is possible to control the Itb current, which is higher than the allocated Ita, to flow.

For example, the processor 270 may control a current of 15A instead of 10A to flow through the burned-in Pt subpixel.

Next, the processor 270 may control a current lower than the allocated current to flow through the Pt2 subpixel around the Pt subpixel. That is, as shown in (b) of FIG. 12D , it is possible to control the It2b current, which is at a lower level than the allocated It2a, to flow.

For example, the processor 270 may control a current of 5A instead of 10A to flow through the Pt2 subpixel.

Next, the processor 270 may control a current lower than the allocated current to flow through the Pt3 subpixels around the Pt subpixels. That is, as shown in (c) of FIG. 12D , it is possible to control the It3b current, which is at a lower level than the allocated It3a, to flow.

For example, the processor 270 may control a current of 6A instead of 10A to flow through the Pt3 subpixel.

That is, the processor 270 may control the Pt3 subpixel further away from the Pt2 subpixel to flow a higher current to the Pt3 subpixel farther than the Pt2 subpixel because the accumulated current amount is smaller. Accordingly, it is possible to adjust the overall amount of accumulated current to be similar, and consequently, it is possible to extend the lifespan of the organic light emitting panel.

Meanwhile, the processor 270 may control the current level applied to each of the RGBW sub-pixels to be varied on a frame-by-frame basis, and a current lower than the allocated current flows to the sub-pixels surrounding the calculated burn-in sub-pixel. .

In particular, the processor 270 may vary the current flowing through the W sub-pixel among the RGBW sub-pixels on a frame-by-frame basis, so that an afterimage does not occur in the W sub-pixel.

FIG. 13A illustrates RGBW data in a state in which a low current flows in a sub-pixel around a burned-in cell.

On the other hand, when the RGBW data of FIG. 13A is continuously displayed while allowing a low current to flow, an afterimage may remain in the corresponding sub-pixel, particularly, in the W sub-pixel.

Accordingly, the processor 270 may change the level of RGBW data as shown in FIG. 13B while allowing a low current to flow.

For example, the processor 270 may decrease the level of the W data and increase the level of the RGB data to compensate for this, as shown in FIG. 13B in units of frames.

As another example, the processor 270 may increase the level of W data in units of frames and decrease the level of RGB data in order to compensate for this.

The processor 270 may control to alternately repeat FIGS. 13(a) and 13(b) on a frame-by-frame basis. Thereby, an afterimage may not generate|occur|produce.

Meanwhile, referring to FIG. 10 , first, referring to FIG. 10 , the current detector 1110 of FIG. 11 may detect current information flowing through the subpixels of the organic light emitting panel 210 ( S1010 ).

The current detector 1110 may detect the detected current ISen and transmit the converted electrical signal Sds to the processor 270 .

In addition, the processor 270 may receive, from the current detector 1110 , an electric signal Sds including current information flowing in the subpixels of the organic light emitting panel 210 .

Next, the processor 270 may calculate the accumulated current of the subpixels of each organic light emitting panel 210 based on information on the current flowing through the subpixels of the organic light emitting panel 210 .

Meanwhile, the processor 270 may determine the subpixel having the largest accumulated current of the subpixels of each organic light emitting panel 210 as the burn-in prediction subpixel ( S1020 ).

Meanwhile, the processor 270 may control a current lower than the allocated current to flow through the sub-pixels around the burn-in prediction sub-pixel ( S1030 ). Accordingly, it is possible to delay the burn-in phenomenon of the sub-pixels surrounding the burn-in prediction sub-pixel.

Next, the processor 270 may control a current lower than the allocated current to flow through the calculated burn-in prediction sub-pixel ( S1040 ).

Meanwhile, when the data signal is a PAM signal, the processor 270 may control a data voltage lower than the allocated data voltage to be applied to subpixels around the calculated burn-in prediction subpixel.

Meanwhile, when the data signal is a PWM duty signal, the processor 270 may control the PWM signal having a duty smaller than the assigned duty to be applied to subpixels around the calculated burn-in prediction subpixel.

Meanwhile, the processor 270 controls a current of a first level to flow to a first subpixel among subpixels surrounding the calculated burn-in prediction subpixel, and controls the first subpixel among subpixels surrounding the calculated burn-in prediction subpixel. A current of a second level higher than the first level may be controlled to flow to a second sub-pixel farther than the pixel.

Meanwhile, the processor 270 may control a current of a lower level to flow to a subpixel around the calculated burn-in prediction subpixel as it is closer to the burn-in prediction subpixel.

Meanwhile, the processor 270 may vary the current level applied to each of the RGBW sub-pixels in units of frames, but may control the sub-pixels around the calculated burn-in prediction sub-pixel to flow a current lower than the allocated current. there is.

Meanwhile, the processor 270 controls a first level of current to flow to a first sub-pixel among sub-pixels surrounding a sub-pixel having the largest accumulated current amount, and the processor 270 controls a first-level current to flow to a second sub-pixel among sub-pixels surrounding the sub-pixel having the largest accumulated current. A current of a second level higher than the first level may be controlled to flow to a second subpixel farther than the first subpixel.

Meanwhile, the processor 270 may control a current of a lower level to flow to a subpixel having the largest accumulated current amount, and to a subpixel adjacent to the subpixel having the largest accumulated current amount as it approaches the subpixel having the largest accumulated current amount.

Meanwhile, when the data signal is a PAM signal, the processor 270 may control a data voltage lower than the allocated data voltage to be applied to the calculated burn-in prediction sub-pixel.

Meanwhile, when the data signal is a PWM duty signal, the processor 270 may control the PWM signal having a duty smaller than the assigned duty to be applied to the calculated burn-in prediction sub-pixel.

Meanwhile, the method of operating an image display apparatus of the present invention can be implemented as processor-readable codes on a processor-readable recording medium provided in the image display apparatus. The processor-readable recording medium includes all types of recording devices in which data readable by the processor is stored. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and also includes those implemented in the form of carrier waves such as transmission over the Internet. . In addition, the processor-readable recording medium is distributed in a computer system connected to a network, so that the processor-readable code can be stored and executed in a distributed manner.

In addition, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims In addition, various modifications are possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

Claims (10)

display;
Including; a control unit for controlling the display;
The display is
a first interface unit for receiving an image signal and a first DC power from the control unit;
a second interface for receiving second DC power from a power supply outside the display;
a timing controller outputting a data driving signal and a gate driving signal based on the image signal from the first interface unit;
an organic light emitting panel having a plurality of sub-pixels;
a data driver for driving the organic light emitting panel based on the data driving signal;
a gate driver driving the organic light emitting panel based on the gate driving signal;
a current detector detecting a current flowing through the subpixel;
A burn-in sub-pixel or a burn-in prediction sub-pixel in the organic light emitting panel is calculated based on the current detected by the current detector, and a current lower than the current allocated to the sub-pixels around the calculated burn-in sub-pixel or the burn-in prediction sub-pixel It includes; a processor that controls the current to flow.
The first DC power is used for the operation of the timing controller,
The second DC power is input to the data driver. According to claim 1,
The processor is
and controlling a data voltage lower than an assigned data voltage to be applied to the subpixels around the calculated burn-in subpixel or the burn-in prediction subpixel. According to claim 1,
The processor is
and controlling a current higher than an allocated current to flow through the calculated burn-in sub-pixel. 4. The method of claim 3,
The processor is
and controlling to apply a data voltage higher than an allocated data voltage to the calculated burn-in sub-pixel. According to claim 1,
The processor is
A current of a first level is controlled to flow in a first subpixel among subpixels surrounding the calculated burn-in subpixel or the burn-in prediction subpixel, and among the subpixels surrounding the calculated burn-in subpixel or the burn-in prediction subpixel, the An image display apparatus according to claim 1, wherein a current of a second level higher than the first level is controlled to flow to a second sub-pixel farther than the first sub-pixel. According to claim 1,
The processor is
and controlling the current to flow at a lower level to the sub-pixels adjacent to the calculated burn-in sub-pixel or the burn-in prediction sub-pixel as it is closer to the burn-in sub-pixel or the burn-in prediction sub-pixel. According to claim 1,
When the display has sub-pixels of RGBW,
The processor is
The image display apparatus according to claim 1, wherein the level of current applied to each of the RGBW sub-pixels is varied on a frame-by-frame basis, and a current lower than the allocated current flows through the sub-pixels around the calculated burn-in sub-pixel. display;
Including; a control unit for controlling the display;
The display is
a first interface unit for receiving an image signal and a first DC power from the control unit;
a second interface for receiving second DC power from a power supply outside the display;
a timing controller outputting a data driving signal and a gate driving signal based on the image signal from the first interface unit;
an organic light emitting panel having a plurality of sub-pixels;
a data driver for driving the organic light emitting panel based on the data driving signal;
a gate driver driving the organic light emitting panel based on the gate driving signal;
a current detector detecting a current flowing through the subpixel;
Based on the current detected by the current detector, a subpixel with the largest accumulated current amount is calculated in the organic light emitting panel, and a current lower than the allocated current flows through the subpixels around the subpixel with the largest accumulated current amount. a processor to control; including and including;
The first DC power is used for the operation of the timing controller,
The second DC power is input to the data driver. 9. The method of claim 8,
The processor is
A current of a first level is controlled to flow to a first subpixel among subpixels surrounding the subpixel with the largest accumulated current, and more than the first subpixel among the subpixels with the largest accumulated current An image display device according to claim 1, wherein a current of a second level higher than the first level is controlled to flow to a distant second sub-pixel. 9. The method of claim 8,
The processor is
and controlling the current to flow at a lower level to the sub-pixels adjacent to the sub-pixel having the largest accumulated current as it approaches the sub-pixel having the largest accumulated current.

Images