Image display device

Abstract

To provide an image display device making it possible to satisfy a power consumption standard and upgrade the luminance of display.SOLUTION: An image display device in accordance with an embodiment of the present invention includes an organic light emitting panel, a signal processor that processes a signal carrying an input image and outputs an image signal, a timing controller that drives the organic light emitting panel on the basis of the image signal received from the signal processor, and a power supply that supplies a display drive voltage to the timing controller. The signal processor outputs an image signal on the basis of a luminance level based on an average luminance level of an input image and a luminance level computed based on an offset level associated with detection current information which is detected in response to the display drive voltage by the timing controller. While a power consumption standard is satisfied, the luminance of display can be upgraded.SELECTED DRAWING: Figure 9a

Description

[Technical Field]

[0001] The present disclosure relates to an image display device, and more particularly to an image display device that can improve the brightness of the display while satisfying power consumption standards. [Related Technology] This application claims priority under Article 4 of Korean Patent Application No. 10-2024-0065592 (filing date: May 21, 2024; DAS: C429), and the present invention is based on the disclosures in that Korean patent application. For reference, the contents of the specification, claims, and drawings of that Korean patent application are incorporated herein by reference. [Background technology]

[0002] An image display device is a device that displays an image.

[0003] In recent years, in response to demands for increased image resolution and image clarity, there has been a trend toward increasing the display resolution or peak brightness of displays within image display devices.

[0004] On the other hand, the higher the display resolution or peak brightness of the display, the greater the power consumption of the power supplied to the display.

[0005] As a result, methods for reducing power consumption in image display devices have been studied, and in particular, methods for reducing power consumption to comply with power consumption regulations in various countries have been studied.

[0006] On the other hand, in the case of a display equipped with an organic light-emitting panel, variations in power consumption occur even when the same image is displayed due to panel variations in the organic light-emitting panel.

[0007] When signal processing is performed to reduce power consumption collectively without taking into consideration panel deviations, there is a drawback in that brightness loss occurs in the display. Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the present disclosure is to provide an image display device that can improve the brightness of the display while satisfying the power consumption standard.

[0009] Another problem to be solved by the present disclosure is to provide an image display device that can improve the brightness of the display based on efficient calculations while satisfying power consumption standards.

[0010] Still another object of the present disclosure is to provide an image display device that can improve the brightness of the display by taking into consideration panel deviations while satisfying power consumption standards. [Means for solving the problem]

[0011] [One aspect of the present invention] In one aspect of the present invention, the following invention is proposed. [Claim 1] An image display device, organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The signal processing device includes: an image display device that outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to a display drive voltage. [Claim 2] 2. The image display device according to claim 1, wherein the signal processing device controls the offset level so that the detected current information is smaller than a reference level, and the larger the difference between the detected current information and a reference level, the larger the offset level becomes. [Claim 3] The image display device according to claim 1, wherein the signal processing device outputs an image signal corresponding to a brightness level based on an average brightness level of an input image without the offset level when the detected current information is equal to or greater than a reference level. [Claim 4] 2. The image display device according to claim 1, wherein when the average brightness level of the input image is a first level and the level of the detected current information is a second level that is lower than a reference level, the signal processing device outputs an image signal based on a first offset level corresponding to the second level and the first level. [Claim 5] 5. The image display device according to claim 4, wherein the signal processing device outputs an image signal based on a second offset level corresponding to the third level and the first level when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than the second level. [Claim 6] 6. The image display device according to claim 5, wherein the signal processing device controls the second offset level so that the second offset level is smaller than the first offset level. [Claim 7] 5. The image display device according to claim 4, wherein the signal processing device outputs an image signal corresponding to the first level when the average brightness level of the input image is a first level and the level of the detected current information is a fourth level that is equal to or higher than a reference level. [Claim 8] 5. The image display device according to claim 4, wherein the signal processing device controls the luminance level of the image signal output from the signal processing device so that the luminance level of the image signal output from the signal processing device decreases as the average luminance level increases. [Claim 9] The signal processing device includes: When the average luminance level of the input image is a first level and the level of the detected current information is a second level that is lower than a reference level, outputting an image signal based on a first offset level corresponding to the second level and the first level; 2. The image display device according to claim 1, wherein when the average brightness level of the input image is a third level greater than the first level and the level of the detected current information is the second level less than a reference level, an image signal based on a second offset level less than the first offset level and the third level is output. [Claim 10] 2. The image display device according to claim 1, wherein the signal processing device controls the offset level so that the offset level decreases as the level of the display drive voltage increases. [Claim 11] 2. The image display device according to claim 1, wherein the signal processing device controls the offset level so that the offset level decreases as the cumulative driving period of the display increases. [Claim 12] The signal processing device includes: an average brightness level calculation unit that calculates an average brightness level of the input image; an offset level calculation unit that calculates the offset level based on the detected current information from the timing controller; 2. The image display device according to claim 1, further comprising: a data output section that outputs an image signal corresponding to a luminance level based on the average luminance level and a luminance level calculated based on the offset level. [Claim 13] organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The timing controller outputting the display driving voltage or a first current corresponding to the display driving voltage, detecting the first current, and transmitting detected current information of the first current to a signal processing device; The signal processing device includes: an image display device that outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information; [Claim 14] 14. The image display device according to claim 13, wherein the signal processing device controls the offset level so that the detected current information is smaller than a reference level, and the larger the difference between the detected current information and a reference level, the larger the offset level becomes. [Claim 15] 14. The image display device according to claim 13, wherein, when the average brightness level of the input image is a first level and the level of the detected current information is a second level lower than a reference level, the signal processing device outputs an image signal based on a first offset level corresponding to the second level and the first level. [Claim 16] 16. The image display device according to claim 15, wherein the signal processing device outputs an image signal based on a second offset level corresponding to the third level and the first level when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than the second level. [Claim 17] organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The timing controller outputs an image data signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display drive voltage. [Claim 18] 18. The image display device according to claim 17, wherein, when the average brightness level of the input image is a first level and the level of the detected current information is a second level lower than a reference level, the timing controller outputs an image data signal based on a first offset level corresponding to the second level and the first level. [Claim 19] 18. The image display device according to claim 17, wherein the timing controller outputs an image data signal based on a second offset level corresponding to the third level and the first level when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than the second level. [Claim 20] The timing controller a current detection unit that detects a current output corresponding to the display drive voltage; an offset level calculation unit that calculates the offset level based on detected current information from the current detection unit; 18. The image display device according to claim 17, further comprising: a data output unit that outputs an image data signal corresponding to a luminance level based on the average luminance level and a luminance level calculated based on the offset level.

[0012] In order to solve the above problem, an image display device according to one embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that performs signal processing on an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display drive voltage to the timing controller, and the signal processing device outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display drive voltage.

[0013] On the other hand, the signal processing device can control the offset level so that the greater the difference between the detected current information and the reference level, the greater the offset level becomes.

[0014] On the other hand, when the detected current information is equal to or greater than the reference level, the signal processing device can output an image signal corresponding to a luminance level based on the average luminance level of the input image without an offset level.

[0015] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level that is smaller than the reference level, the signal processing device can output an image signal based on a first offset level corresponding to the second level and the first level.

[0016] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is smaller than the reference level and larger than the second level, the signal processing device can output an image signal based on a second offset level corresponding to the third level and the first level.

[0017] On the other hand, the signal processing device can control the second offset level to be smaller than the first offset level.

[0018] On the other hand, when the average brightness level of the input image is the first level and the level of the detected current information is the fourth level that is equal to or higher than the reference level, the signal processing device can output an image signal corresponding to the first level.

[0019] On the other hand, the signal processing device can perform control so that the luminance level of the image signal output from the signal processing device decreases as the average luminance level increases.

[0020] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level smaller than the reference level, the signal processing device outputs an image signal based on the first level and a first offset level corresponding to the second level, and when the average brightness level of the input image is a third level larger than the first level and the level of the detected current information is a second level smaller than the reference level, the signal processing device can output an image signal based on the third level and a second offset level smaller than the first offset level.

[0021] On the other hand, the signal processor can control the offset level to be smaller as the level of the display driving voltage increases.

[0022] On the other hand, the signal processing device can perform control so that the offset level decreases as the cumulative driving period of the display increases.

[0023] On the other hand, the signal processing device can be equipped with (include; constitute; construct; set; encompass; include; contain) an average brightness level calculation unit that calculates an average brightness level of an input image, an offset level calculation unit that calculates an offset level based on detected current information from the timing controller, and a data output unit that outputs image signals corresponding to the brightness level based on the average brightness level and the brightness level calculated based on the offset level.

[0024] An image display device according to another embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that performs signal processing on an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display drive voltage to the timing controller, wherein the timing controller outputs the display drive voltage or a first current corresponding to the display drive voltage, detects the first current, and transmits detected current information of the first current to the signal processing device, and the signal processing device outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information.

[0025] An image display device according to yet another embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that performs signal processing on an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display drive voltage to the timing controller, and the timing controller outputs an image data signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display drive voltage.

[0026] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level that is smaller than the reference level, the timing controller can output an image data signal based on a first offset level corresponding to the second level and the first level.

[0027] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is smaller than the reference level and larger than the second level, the timing controller can output an image data signal based on a second offset level corresponding to the third level and the first level.

[0028] On the other hand, the timing controller may include a current detection unit that detects a current output corresponding to a display drive voltage, an offset level calculation unit that calculates an offset level based on detected current information from the current detection unit, and a data output unit that outputs image data signals corresponding to a brightness level based on an average brightness level and a brightness level calculated based on the offset level. [Effects of the Invention]

[0029] An image display device according to an embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that processes an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display drive voltage to the timing controller. The signal processing device outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display drive voltage. This makes it possible to improve the brightness of the display while satisfying power consumption standards. Furthermore, it makes it possible to improve the brightness of the display based on efficient calculation while satisfying power consumption standards. Furthermore, it makes it possible to improve the brightness of the display by taking panel deviation into account while satisfying power consumption standards.

[0030] Meanwhile, the signal processing device can control the offset level so that the greater the difference between the detected current information and the reference level, the greater the offset level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0031] On the other hand, when the detected current information is equal to or greater than the reference level, the signal processing device can output an image signal corresponding to a luminance level based on the average luminance level of the input image without an offset level, thereby satisfying the power consumption standard.

[0032] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level lower than the reference level, the signal processing device can output an image signal based on the first level and a first offset level corresponding to the second level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0033] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is lower than the reference level and higher than the second level, the signal processing device can output an image signal based on the first level and a second offset level corresponding to the third level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0034] Meanwhile, the signal processor can control the second offset level to be smaller than the first offset level, thereby improving the brightness of the display based on the detected current while still meeting the power consumption standard.

[0035] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a fourth level equal to or higher than the reference level, the signal processing device can output an image signal corresponding to the first level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0036] Meanwhile, the signal processing device can control the luminance level of the image signal output from the signal processing device so that the luminance level decreases as the average luminance level increases, thereby improving the luminance of the display while satisfying the power consumption standard.

[0037] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level lower than the reference level, the signal processing device can output an image signal based on the first level and a first offset level corresponding to the second level, and when the average brightness level of the input image is a third level higher than the first level and the level of the detected current information is the second level lower than the reference level, the signal processing device can output an image signal based on the second offset level lower than the first offset level and the third level. This makes it possible to improve the brightness of the display based on the detected current while satisfying the power consumption standard.

[0038] Meanwhile, the signal processing device can control the offset level to be smaller as the display driving voltage level increases, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0039] Meanwhile, the signal processing device may control the offset level to be smaller as the cumulative driving period of the display increases, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0040] Meanwhile, the signal processing device may include an average brightness level calculation unit that calculates an average brightness level of an input image, an offset level calculation unit that calculates an offset level based on detected current information from the timing controller, and a data output unit that outputs image signals corresponding to the brightness level based on the average brightness level and the brightness level calculated based on the offset level, thereby making it possible to improve the brightness of the display based on the detected current while satisfying the power consumption standard.

[0041] An image display device according to another embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that processes an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display drive voltage to the timing controller. The timing controller outputs a display drive voltage or a first current corresponding to the display drive voltage, detects the first current, and transmits detected current information of the first current to the signal processing device. The signal processing device outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information. This makes it possible to improve the brightness of the display while satisfying power consumption standards. It also makes it possible to improve the brightness of the display based on efficient calculation while satisfying power consumption standards. It also makes it possible to improve the brightness of the display by taking panel deviation into account while satisfying power consumption standards.

[0042] An image display device according to yet another embodiment of the present disclosure includes an organic light-emitting panel, a signal processing device that processes an input image and outputs an image signal, a timing controller that drives the organic light-emitting panel based on the image signal from the signal processing device, and a power supply unit that supplies a display driving voltage to the timing controller, wherein the timing controller outputs an image data signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display driving voltage. This makes it possible to improve the brightness of the display while satisfying power consumption standards. Furthermore, it makes it possible to improve the brightness of the display based on efficient calculation while satisfying power consumption standards. Furthermore, it makes it possible to improve the brightness of the display by taking panel deviation into account while satisfying power consumption standards.

[0043] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information is a second level lower than the reference level, the timing controller can output an image data signal based on the first level and a first offset level corresponding to the second level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0044] Meanwhile, when the average brightness level of the input image is a first level and the level of the detected current information is a third level that is lower than the reference level and higher than the second level, the timing controller can output an image data signal based on the first level and a second offset level corresponding to the third level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard.

[0045] Meanwhile, the timing controller may include a current detector for detecting a current output corresponding to a display driving voltage, an offset level calculator for calculating an offset level based on detected current information from the current detector, and a data output unit for outputting image data signals corresponding to a brightness level based on an average brightness level and a brightness level calculated based on the offset level, thereby improving the brightness of the display based on the detected current while satisfying the power consumption standard. [Brief explanation of the drawings]

[0046] [Figure 1] 1 is a diagram illustrating an image display device according to an embodiment of the present disclosure. [Figure 2] 2 is an example of an internal block diagram of the image display device of FIG. 1. [Figure 3] 3 is an example of an internal block diagram of the signal processing device of FIG. 2. [Figure 4a] 3 is a diagram showing a control method of the remote control device of FIG. 2. [Figure 4b] FIG. 3 is an internal block diagram of the remote control device of FIG. 2. [Figure 5] FIG. 3 is an example of an internal block diagram of the display of FIG. 2. [Figure 6a-6b] 6 is a diagram referred to in the description of the organic light-emitting panel of FIG. 5. [Figure 7] FIG. 2 is an example of an internal block diagram of a power supply unit according to an embodiment of the present disclosure. [Figure 8a] 1 is a flowchart illustrating an operation method of an image display device related to the present disclosure. [Figure 8b-8c] FIG. 8b is a diagram referred to in the explanation of the operation of FIG. 8a. [Figure 9a] FIG. 1 is a flowchart illustrating an operation method of an image display device according to an embodiment of the present disclosure. [Figure 9b] FIG. 10 is a flowchart illustrating an operation method of an image display device according to another embodiment of the present disclosure. [Figure 10] 1 is an example of an internal block diagram of an image display device according to an embodiment of the present disclosure. [Figure 11a-12] FIG. 11 is a diagram to which reference is made for explaining the operation of FIGS. 9a to 10. [Figure 13] FIG. 10 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0047] In the following, the present disclosure will be explained in more detail with reference to the drawings.

[0048] The suffixes "module" and "section" used in the following description for components are simply added for the sake of ease of writing this specification, and do not impart any particular significance or role to the components. Therefore, the terms "module" and "section" can be used interchangeably.

[0049] FIG. 1 is a diagram showing an image display device according to an embodiment of the present disclosure.

[0050] As shown in the drawings, the image display device 100 may include a display 180 .

[0051] The display resolution of the display 180 tends to increase, and the peak brightness that can be displayed by the display 180 also tends to increase. This increases the power consumption of the power supplied to the display 180.

[0052] On the other hand, when the display 180 includes an organic light emitting panel (OLED panel), which is a self-luminous display panel, the brightness level of the image signal is varied based on the average brightness of the input image in order to reduce power consumption.

[0053] Meanwhile, since there are variations among organic light-emitting panels, unnecessary brightness loss may occur when reducing power consumption based on the average brightness of an input image.

[0054] Therefore, the present disclosure proposes a solution that can improve the brightness of the display while satisfying the power consumption standard.

[0055] An image display device 180 according to one embodiment of the present disclosure outputs an image signal corresponding to a brightness level based on the average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information Idt detected in response to the display drive voltage EVDD.

[0056] This allows the brightness of the display 180 to be improved while satisfying the power consumption standard. Also, the brightness of the display 180 can be improved based on efficient calculation while satisfying the power consumption standard. Furthermore, the brightness of the display 180 can be improved by taking into account panel deviation while satisfying the power consumption standard.

[0057] On the other hand, the image display device 100 in FIG. 1 can be used with TVs, monitors, vehicle displays, tablet PCs, mobile terminals, and the like.

[0058] FIG. 2 is an example of an internal block diagram of the image display device of FIG.

[0059] As shown in FIG. 2, an image display device 100 according to one embodiment of the present disclosure may include an image receiving unit 105, an external device interface unit 130, a storage unit 140, a user input interface unit 150, a sensor unit (not shown), a signal processing unit 170, a display 180, and an audio output unit 185.

[0060] The image receiving unit 105 can include a tuner unit 110, a demodulation unit 120, a network interface unit 130, and an external device interface unit 130.

[0061] Meanwhile, unlike the drawing, the image receiving unit 105 may include only the tuner unit 110, the demodulation unit 120, and the external device interface unit 130. In other words, the image receiving unit 105 may not include the network interface unit 130.

[0062] The tuner unit 110 selects RF (Radio Frequency) broadcast signals corresponding to a channel selected by a user or all pre-stored channels from among RF broadcast signals received through an antenna (not shown), and converts the selected RF broadcast signal into an intermediate frequency signal or a baseband image or audio signal.

[0063] For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal DIF, and if it is an analog broadcast signal, it is converted into an analog baseband image or audio signal CVBS / SIF. That is, the tuner unit 110 can process digital broadcast signals or analog broadcast signals. The analog baseband image or audio signal CVBS / SIF output from the tuner unit 110 can be directly input to the signal processing device 170.

[0064] Meanwhile, the tuner unit 110 may include multiple tuners to receive broadcast signals of multiple channels, or may include a single tuner that simultaneously receives broadcast signals of multiple channels.

[0065] The demodulation unit 120 receives the digital IF signal DIF converted by the tuner unit 110 and performs a demodulation operation.

[0066] The demodulator 120 may output a stream signal TS after demodulation and channel decoding. In this case, the stream signal may be a signal in which an image signal, an audio signal, or a data signal is multiplexed.

[0067] The stream signal output from the demodulation unit 120 can be input to the signal processing device 170. The signal processing device 170 performs demultiplexing, image / audio signal processing, etc., and then outputs an image to a display 180 and outputs audio to an audio output unit 185.

[0068] The external device interface unit 130 can transmit and receive data to and from a connected external device (not shown), for example, a set-top box 50. To this end, the external device interface unit 130 can include an A / V input / output unit (not shown).

[0069] The external device interface unit 130 can be connected via wire or wireless to external devices such as DVDs (Digital Versatile Disks), Blu-rays, game consoles, cameras, camcorders, computers (notebooks), set-top boxes, etc., and can perform input / output operations with the external devices.

[0070] The A / V input / output unit can receive image and audio signals from an external device, while the wireless communication unit (not shown) can perform short-distance wireless communication with other electronic devices.

[0071] Through the wireless communication unit (not shown), the external device interface unit 130 can exchange data with the adjacent mobile terminal 600. In particular, the external device interface unit 130 can receive device information, information on an application being executed, an application image, etc. from the mobile terminal 600 in a mirroring mode.

[0072] The network interface unit 135 provides an interface for connecting the image display device 100 to a wired or wireless network, including the Internet network. For example, the network interface unit 135 may receive content or data provided by the Internet, a content provider, or a network operator via the network.

[0073] Meanwhile, the network interface unit 135 may include a wireless communication unit (not shown).

[0074] The storage unit 140 can store programs for signal processing and control within the signal processing device 170, and can also store signal-processed image, audio, or data signals.

[0075] The storage unit 140 can also temporarily store image, audio, or data signals input to the external device interface unit 130. The storage unit 140 can also store information about a predetermined broadcast channel through a channel storage function such as a channel map.

[0076] 2 illustrates an embodiment in which the storage unit 140 is provided separately from the signal processing unit 170, the scope of the present disclosure is not limited thereto. The storage unit 140 may be provided within the signal processing unit 170.

[0077] The user input interface unit 150 transfers a signal input by the user to the signal processing device 170 or transfers a signal from the signal processing device 170 to the user.

[0078] For example, the remote control device 200 can send and receive user input signals such as power on / off, channel selection, and screen settings, or can transmit user input signals input from local keys (not shown) such as a power key, channel key, volume key, and setting value to the signal processing device 170, or can transmit user input signals input from a sensor unit (not shown) that senses user gestures to the signal processing device 170, or can send signals from the signal processing device 170 to the sensor unit (not shown).

[0079] The signal processing device 170 can demultiplex the input stream via the tuner unit 110, the demodulation unit 120, the network interface unit 135, or the external device interface unit 130, or process the demultiplexed signal to generate and output a signal for image or audio output.

[0080] For example, the signal processing device 170 can receive a broadcast signal or an HDMI (registered trademark) signal received from the image receiving unit 105, perform signal processing based on the received broadcast signal or HDMI (registered trademark) signal, and output the processed image signal.

[0081] The image signal processed by the signal processing device 170 can be input to the display 180 and displayed as an image corresponding to the image signal. In addition, the image signal processed by the signal processing device 170 can be input to an external output device via the external device interface unit 130.

[0082] The audio signal processed by the signal processing device 170 can be output as sound to the audio output unit 185. In addition, the audio signal processed by the signal processing device 170 can be input to an external output device via the external device interface unit 130.

[0083] Although not shown in Fig. 2, the signal processing device 170 may include a demultiplexing unit, an image processing unit, etc. That is, the signal processing device 170 can perform various signal processing operations and can therefore be implemented in the form of a system on chip (SOC), which will be described later with reference to Fig. 3.

[0084] Additionally, the signal processing device 170 may control the overall operation of the image display device 100. For example, the signal processing device 170 may control the tuner unit 110 to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

[0085] The signal processing device 170 can also control the image display device 100 in accordance with a user command input via the user input interface unit 150 or an internal program.

[0086] Meanwhile, the signal processing device 170 can control the display 180 to display an image. At this time, 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.

[0087] Meanwhile, the signal processing device 170 can display a predetermined object within the image displayed on the display 180. For example, the object can be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images, and text.

[0088] Meanwhile, the signal processing device 170 can recognize the position of the user based on an image captured by an imaging unit (not shown). For example, the signal processing device 170 can grasp the distance (z-axis coordinate) between the user and the image display device 100. In addition, the signal processing device 170 can grasp the x-axis coordinate and y-axis coordinate in the display 180 corresponding to the user position.

[0089] The display 180 converts the image signals, data signals, OSD signals, and control signals processed by the signal processing unit 170 or the image signals, data signals, and control signals received by the external device interface unit 130 to generate driving signals.

[0090] Meanwhile, the display 180 may be configured as a touch screen and may be used as an input device in addition to an output device.

[0091] The audio output unit 185 receives the signal that has been audio-processed by the signal processing device 170 and outputs it as audio.

[0092] The photographing unit (not shown) photographs the user. The photographing unit (not shown) can be realized by one camera, but is not limited thereto and can also be realized by multiple cameras. Image information photographed by the photographing unit (not shown) can be input to the signal processing device 170.

[0093] The signal processing device 170 can detect a user's gesture based on an image captured by an image capturing unit (not shown) or a signal sensed by a sensor unit (not shown), or a combination thereof.

[0094] The power supply device 190 supplies the power throughout the image display device 100 .

[0095] In particular, the power supply device 190 can supply power to the signal processing device 170, which can be implemented in the form of a system on chip (SOC), a display 180 for displaying images, and an audio output unit 185 for audio output.

[0096] Specifically, the power supply 190 may include a converter that converts the level of the input voltage.

[0097] For example, if the input voltage is an AC voltage, the power supply device 190 may include an AC / DC converter and a DC / DC converter.

[0098] As another example, the power supply 190 may include a dc / dc converter if the input voltage is a direct current voltage.

[0099] On the other hand, the power supply device 190 includes a battery BTA.

[0100] The remote control device 200 transmits user input to the user input interface unit 150. To this end, the remote control device 200 can use Bluetooth, RF (Radio Frequency) communication, IR (Infrared) communication, UWB (Ultra Wideband), ZigBee, etc. Also, the remote control device 200 can receive an image, audio, or data signal output from the user input interface unit 150 and display it on the remote control device 200 or output it as audio.

[0101] On the other hand, the image display device 100 described above can be a fixed or mobile digital broadcast receiver capable of receiving digital broadcasts.

[0102] Meanwhile, the block diagram of the image display device 100 shown in FIG. 2 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 image display device 100 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. Furthermore, the functions performed by each block are intended to explain the embodiments of the present disclosure, and the specific operations and devices thereof do not limit the scope of the present disclosure.

[0103] FIG. 3 is an example of an internal block diagram of the signal processing device of FIG.

[0104] Referring to the drawings, the signal processing device 170 according to an embodiment of the present disclosure may include a demultiplexing unit 310, an image processing unit 320, a processor 330, and an audio processing unit 370. In addition, the signal processing device 170 may further include a data processing unit (not shown).

[0105] The demultiplexer 310 demultiplexes the input stream. For example, when an MPEG-2TS signal is input, the demultiplexer 310 demultiplexes the input stream and separates it into image, audio, and data signals. Here, the stream signal input to the demultiplexer 310 may be a stream signal output from the tuner 110, the demodulator 120, or the external device interface 130.

[0106] The image processing unit 320 can perform signal processing on the input image. For example, the image processing unit 320 can perform image processing on the image signal demultiplexed by the demultiplexer 310.

[0107] To this end, the image processing unit 320 may include an image decoder 325, a scaler 335, an image quality processing unit 635, an image encoder (not shown), a graphics processing unit 340, a frame rate conversion unit 350, a formatter 360, and the like.

[0108] The image decoder 325 decodes the demultiplexed image signal, and the scaler 335 scales the resolution of the decoded image signal so that it can be output to the display 180 .

[0109] The image decoder 325 can include decoders for various standards, such as MPEG-2 and H.264 decoders, 3D image decoders for color and depth images, and decoders for multi-time point images.

[0110] The scaler 335 can scale the input image signal that has been image-decoded by the image decoder 325 or the like.

[0111] For example, the scaler 335 may upscale an input image signal having a smaller size or resolution, and downscale an input image signal having a larger size or resolution.

[0112] The image quality processing unit 635 can perform image quality processing on an input image signal that has been decoded by the image decoder 325 or the like.

[0113] For example, the image quality processing unit 635 can perform noise removal processing of the input image signal, expand the gradation resolution of the input image signal, improve the image resolution, perform high dynamic range (HDR) based signal processing, vary the frame rate, and perform image quality processing corresponding to panel characteristics, particularly the panel.

[0114] The graphics processing unit 340 generates an OSD signal by itself or in response to a user input. For example, the graphics processing unit 340 can generate a signal for displaying various information in graphics or text on the screen of the display 180 based on a user input signal. The generated OSD signal can include various data such as a user interface screen of the image display device 100, various menu screens, widgets, icons, etc. The generated OSD signal can also include 2D objects or 3D objects.

[0115] The graphics processor 340 can also 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 in a pointing signal processor, and the graphics processor 240 can include such a pointing signal processor (not shown). Of course, the pointing signal processor (not shown) can also be provided separately from the graphics processor 240.

[0116] The frame rate converter (FRC) 350 can convert the frame rate of an input image, but can also output the image as is without any additional frame rate conversion.

[0117] On the other hand, a formatter 360 can change the format of an input image signal into an image signal suitable for display on a display and output the image signal.

[0118] In particular, the Formatter 360 can change the format of the image signal to be compatible with the display panel.

[0119] On the other hand, the formatter 360 can also change the format of the image signal.

[0120] The processor 330 can control the overall operation within the image display device 100 or within the signal processing device 170 .

[0121] For example, the processor 330 can control the tuner 110 to select (tune) an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

[0122] The processor 330 can also control the image display device 100 according to a user command input via the user input interface unit 150 or an internal program.

[0123] The processor 330 can also control data transmission with the network interface unit 135 or the external device interface unit 130 .

[0124] The processor 330 can also control the operations of the demultiplexer 310, image processor 320, and the like in the signal processing device 170.

[0125] Meanwhile, the audio processing unit 370 in the signal processing device 170 can perform audio processing of the demultiplexed audio signal. To this end, the audio processing unit 370 can include various decoders.

[0126] Furthermore, the audio processing unit 370 in the signal processing device 170 can process bass, treble, volume adjustment, and the like.

[0127] A data processing unit (not shown) in the signal processing device 170 can perform data processing on the demultiplexed data signal. For example, if the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal can be electronic program guide information including broadcast information such as the start time and end time of a broadcast program aired on each channel.

[0128] 3 is a block diagram for one embodiment of the present disclosure, and each component of the block diagram may be integrated, added, or omitted depending on the specifications of the signal processing device 170 actually implemented.

[0129] In particular, the frame rate conversion unit 350 and the formatter 360 can be provided separately from the image processing unit 320 .

[0130] Meanwhile, the signal processing device 170 according to an embodiment of the present disclosure may further include a neural network processor 333 for learning processing and the like.

[0131] FIG. 4a is a diagram showing a control method of the remote control device of FIG.

[0132] As shown in FIG. 4a(a), a pointer 205 corresponding to the remote control device 200 is displayed on the display 180.

[0133] The user can move or rotate the remote control device 200 up and down, left and right (FIG. 4a (b)), and forward and backward (FIG. 4a (c)). A pointer 205 displayed on the display 180 of the image display device corresponds to the movement of the remote control device 200. Such a remote control device 200 can be called a spatial remote control or a 3D pointing device because the pointer 205 is moved and displayed according to the movement in 3D space as shown in the drawing.

[0134] FIG. 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.

[0135] Information about the movement of the remote control device 200 sensed via the sensor of the remote control device 200 is transmitted to the image display device. The image display device can calculate the coordinates of the pointer 205 from the information about the movement of the remote control device 200. The image display device can display the pointer 205 so that it corresponds to the calculated coordinates.

[0136] 4a (c) illustrates a case where the user moves the remote control device 200 away from the display 180 while pressing a specific button on the remote control device 200. As a result, a selected area on the display 180 corresponding to the pointer 205 can be zoomed in and displayed enlarged. Conversely, when the user moves the remote control device 200 closer to the display 180, a selected area on the display 180 corresponding to the pointer 205 can be zoomed out and displayed smaller. Meanwhile, when the remote control device 200 moves away from the display 180, the selected area can be zoomed out, and when the remote control device 200 moves closer to the display 180, the selected area can be zoomed in.

[0137] Meanwhile, when a specific button on the remote control device 200 is pressed, the recognition of up, down, left, and right movements may be excluded. That is, when the remote control device 200 is moved toward or away from the display 180, up, down, left, and right movements are not recognized, and only forward and backward movements can be recognized. When a specific button on the remote control device 200 is not pressed, only the pointer 205 moves when the remote control device 200 is moved up, down, left, and right.

[0138] On the other hand, the moving speed and direction of the pointer 205 can correspond to the moving speed and direction of the remote control device 200 .

[0139] FIG. 4b is an internal block diagram of the remote control device of FIG.

[0140] Referring to the drawings, the remote control device 200 may include 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, and a control unit 480.

[0141] The wireless communication unit 425 transmits and receives signals to and from any one of the image display devices according to the above-described embodiments of the present disclosure. Among the image display devices according to the embodiments of the present disclosure, one image display device 100 will be described as an example.

[0142] In this embodiment, the remote control device 200 may include an RF module 421 capable of transmitting and receiving signals to and from the image display device 100 according to an RF communication standard. The remote control device 200 may also include an IR module 423 capable of transmitting and receiving signals to and from the image display device 100 according to an IR communication standard.

[0143] In this 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 via the RF module 421 .

[0144] Furthermore, the remote control device 200 can receive signals transmitted by the image display device 100 via the RF module 421. Furthermore, the remote control device 200 can transmit commands regarding power on / off, channel change, volume change, etc. to the image display device 100 via the IR module 423 as necessary.

[0145] The user input unit 435 may be configured with a keypad, buttons, a touchpad, a touch screen, or the like. A user can operate the user input unit 435 to input commands related to the image display device 100 to the remote control device 200. If the user input unit 435 has hard key buttons, the user can input commands related to the image display device 100 to the remote control device 200 by pushing the hard key buttons. If the user input unit 435 has a touch screen, the user can input commands related to the image display device 100 to the remote control device 200 by touching soft keys on the touch screen. In addition, the user input unit 435 may have various types of input means that can be operated by a user, such as a scroll key or a jog key, and this embodiment does not limit the scope of the present disclosure.

[0146] The sensor unit 440 may include a gyro sensor 441 or an acceleration sensor 443. The gyro sensor 441 may sense information relating to the movement of the remote control device 200.

[0147] For example, the gyro sensor 441 can sense information about the operation of the remote control device 200 based on the x-, y-, and z-axes. The acceleration sensor 443 can sense information about the moving speed of the remote control device 200. Meanwhile, a distance measurement sensor can be further provided to sense the distance from the display 180.

[0148] The output unit 450 can output an image or audio signal corresponding to an operation of the user input unit 435 or a signal transmitted from the image display device 100. Through the output unit 450, the user can know whether or not the user input unit 435 can be operated or whether or not the image display device 100 can be controlled.

[0149] As an example, the output unit 450 may include an LED module 451 that lights up when the user input unit 435 is operated or a signal is transmitted and received with the image display device 100 via the wireless communication unit 425, a vibration module 453 that generates vibrations, an audio output module 455 that outputs sound, or a display module 457 that outputs an image.

[0150] The power supply unit 460 supplies power to the remote control device 200. The power supply unit 460 can reduce power consumption by interrupting the power supply when the remote control device 200 is not in operation for a predetermined time. The power supply unit 460 can resume the power supply when a predetermined key on the remote control device 200 is operated.

[0151] The storage unit 470 may store various types of programs, application data, etc. required for the control or operation of the remote control device 200. If the remote control device 200 transmits and receives signals wirelessly to and from the image display device 100 via the RF module 421, the remote control device 200 and the image display device 100 transmit and receive signals via a predetermined frequency band. The control unit 480 of the remote control device 200 can store and refer to information on a frequency band that can wirelessly transmit and receive signals to and from the image display device 100 paired with the remote control device 200 in the storage unit 470.

[0152] The control unit 480 controls all matters related to the control of the remote control device 200. The control unit 480 can transmit 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 to the image display device 100 via the wireless communication unit 425.

[0153] The user input interface unit 150 of the image display device 100 may include a wireless communication unit 151 capable of wirelessly transmitting and receiving signals with the remote control device 200, and a coordinate value calculation unit 415 capable of calculating the coordinate values ​​of a pointer corresponding to the operation of the remote control device 200.

[0154] The user input interface unit 150 can wirelessly transmit and receive signals to and from the remote control device 200 via an RF module 412. Also, the user input interface unit 150 can receive signals transmitted from the remote control device 200 via an IR module 413 according to the IR communication standard.

[0155] The coordinate value calculation unit 415 can correct camera shake and errors from the signal corresponding to the operation of the remote control device 200 received via the wireless communication unit 151, and calculate the coordinate values ​​x, y of the pointer 205 to be displayed on the display 170.

[0156] The remote control device 200 transmission signal input to the image display device 100 via the user input interface unit 150 is transmitted to the signal processing device 170 of the image display device 100. The signal processing device 170 can determine information relating to the operation and key operation of the remote control device 200 from the signal transmitted by the remote control device 200, and control the image display device 100 accordingly.

[0157] As another example, the remote control device 200 can calculate pointer coordinate values ​​corresponding to the operation and output them to the user input interface unit 150 of the image display device 100. In this case, the user input interface unit 150 of the image display device 100 can transmit information about the received pointer coordinate values ​​to the signal processing device 170 without a separate camera shake or error correction process.

[0158] As another example, the coordinate value calculation unit 415 may be provided inside the signal processing device 170, not inside the user input interface unit 150, unlike in the drawing.

[0159] FIG. 5 is an example of an internal block diagram of the display of FIG.

[0160] As shown in the drawing, the organic light emitting panel-based display 180 may include an organic light emitting panel 210, a first interface unit 230, a second interface unit 231, a timing controller 232, a gate driver 234, a data driver 236, a memory 240, a processor 270, a power supply unit 290, a current detection unit 510, etc.

[0161] The display 180 receives the image signal Vd, the first DC voltage V1, and the second DC voltage V2, and is capable of displaying a predetermined image based on the image signal Vd.

[0162] On the other hand, the first interface unit 230 in the display 180 can receive the image signal Vd and the first DC voltage V1 from the signal processing device 170.

[0163] Here, the first DC voltage V1 can be used for the operation of the power supply unit 290 in the display 180 and the timing controller 232.

[0164] Next, the second interface unit 231 can receive a second DC voltage V2 from the external power supply unit 190. Meanwhile, the second DC voltage V2 can be input to a data driver 236 in the display 180.

[0165] The timing controller 232 can output a data driving signal Sda and a gate driving signal Sga based on the image signal Vd.

[0166] 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 can output the data drive signal Sda and the gate drive signal Sga based on the converted image signal va1.

[0167] The timing controller 232 can receive not only the video signal Vd from the signal processing device 170 but also control signals, a vertical synchronization signal Vsync, and the like.

[0168] The timing controller 232 can output a gate driving signal Sga for operating the gate driver 234 and a data driving signal Sda for operating the data driver 236 based on the video signal Vd, control signals, vertical synchronization signal Vsync, etc.

[0169] In this case, if the panel 210 has RGBW sub-pixels, the data driving signal Sda can be a data driving signal for driving RGBW sub-pixels.

[0170] Meanwhile, the timing controller 232 can further output a control signal Cs to the gate driver 234 .

[0171] The gate driver 234 and the data driver 236 supply scanning signals and image signals to the organic light emitting panel 210 via the gate lines GL and the data lines DL, respectively, in response to the gate driving signal Sga and the data driving signal Sda from the timing controller 232. As a result, the organic light emitting panel 210 displays a predetermined image.

[0172] 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 may be arranged in a matrix form to cross each pixel corresponding to the organic light emitting layer.

[0173] Meanwhile, the data driver 236 may output a data signal to the organic light emitting panel 210 based on the second DC voltage V2 from the second interface unit 231.

[0174] The power supply unit 290 can supply various power sources to the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0175] The current detector 510 can detect a current flowing through a subpixel of the organic light emitting panel 210. The detected current can be input to the processor 270 for calculating an accumulated current.

[0176] The processor 270 can perform various controls within the display 180. For example, it can control the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0177] Meanwhile, the processor 270 may receive information about the current flowing through the subpixels of the organic light emitting panel 210 from the current detector 510 .

[0178] 6a and 6b are diagrams referred to in the description of the organic light-emitting panel of FIG.

[0179] First, FIG. 6a is a diagram showing a pixel in an organic light-emitting panel 210b.

[0180] As shown in the drawing, the organic light emitting panel 210b may include a plurality of scan lines Scan1 to Scann and a plurality of data lines R1, G1, B1, W1 to Rm, Gm, Bm, and Wm intersecting the scan lines.

[0181] Meanwhile, pixels (subpixels) are defined at the intersections of the scan lines and data lines in the organic light emitting panel 210b. The drawing shows a pixel (Pixel) having RGBW subpixels SR1, SG1, SB1, and SW1.

[0182] FIG. 6b illustrates the circuit of any one of the sub-pixels in the pixel of the organic light-emitting panel of FIG. 6a.

[0183] As shown in the drawing, the organic light emitting sub-pixel circuit CRTm is an active type and may include a scan switching element SW1, a storage capacitor Cst, a drive switching element SW2, and an organic light emitting layer OLED.

[0184] The scan switching element SW1 has a gate terminal connected to a scan line and is turned on in response to an input scan signal Vdscan, and when turned on, transmits an input data signal Vdata to the gate terminal of the drive switching element SW2 or one end of the storage capacitor Cst.

[0185] 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 voltage Vdd level transmitted to the other end of the storage capacitor Cst.

[0186] For example, when the data signals have different levels according to a PAM (Pulse Amplitude Modulation) method, the power supply level stored in the storage capacitor Cst varies depending on the level difference of the data signal Vdata.

[0187] As another example, when the data signals have different pulse widths according to a Pulse Width Modulation (PWM) method, the power supply level stored in the storage capacitor Cst varies depending on the pulse width difference of the data signals Vdata.

[0188] The driving switching element SW2 is turned on by the power supply level stored in the storage capacitor Cst. When the driving switching element SW2 is turned on, a driving current IOLED proportional to the stored power supply level flows to the organic light emitting layer OLED, causing the organic light emitting layer OLED to emit light.

[0189] The organic light-emitting layer OLED includes an RGBW light-emitting layer EML 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.

[0190] Meanwhile, all sub-pixels output white light using an organic light-emitting layer (OLED), but green, red, and blue sub-pixels require separate color filters to achieve different colors. That is, green, red, and blue sub-pixels require additional green, red, and blue color filters, respectively. Meanwhile, white sub-pixels output white light, eliminating the need for a separate color filter.

[0191] Meanwhile, in the drawings, the scan switching element SW1 and the drive switching element SW2 are illustrated as p-type MOSFETs, but they may be n-type MOSFETs or other switching elements such as JFET, IGBT, or SIC.

[0192] Meanwhile, a pixel can continue to emit light from an organic light emitting layer OLED after a scan signal is applied during a unit display period, specifically, during a unit frame.

[0193] FIG. 7 is an example of an internal block diagram of a power supply unit according to an embodiment of the present disclosure.

[0194] As shown in the drawings, an image display device 100 according to an embodiment of the present disclosure includes a display 180, a signal processing device 170 that outputs an image signal to the display 180, and a power supply unit 190 that supplies a display driving voltage to the display 180.

[0195] The power supply unit 190 according to one embodiment of the present disclosure includes an ac / dc converter 905 that converts an input ac voltage Va into a dc voltage, and a dc / dc converter 910 that converts the level of the dc voltage from the ac / dc converter 905 and outputs a display drive voltage EVDD.

[0196] In the drawing, an ac / dc converter 905 is illustrated as being disposed between node n2, which is the input terminal of power supply unit 190, and n3, which is the input node of dc / dc converter 910.

[0197] Meanwhile, n1, which is the output node of the ac / dc converter 905, can be electrically connected to the display 180.

[0198] The ac / dc converter 905 includes a diode or a switching element, and can convert the input AC voltage Va into a DC voltage of a first level and output it.

[0199] The dc / dc converter 910 can convert an input DC voltage of a first level and output a display driving voltage EVDD of a second level.

[0200] For example, the converter 910 can boost a DC voltage of a first level and output a display driving voltage EVDD of a second level higher than the first level.

[0201] On the other hand, if the display 180 is an organic light-emitting panel, the display driving voltage EVDD may be a pixel driving voltage of an organic light-emitting pixel.

[0202] On the other hand, the image display device 100 according to an embodiment of the present disclosure further includes a main board 900 that includes a signal processing device 170 and a microcomputer 173.

[0203] The signal processor 170 can output the image signal to a display 180 .

[0204] The microcomputer 173 operates when a remote control signal is received, and can control the operation of the signal processing device 170 or the power supply unit 190 .

[0205] The power supply unit 190 according to an embodiment of the present disclosure can output a microcomputer driving voltage Vst for the operation of the microcomputer 173 .

[0206] To this end, the power supply unit 190 according to one embodiment of the present disclosure may further include a second DC / DC converter 915 that converts the input DC voltage of a first level and outputs a microcomputer driving voltage Vst of a third level.

[0207] At this time, the microcomputer drive voltage Vst can be lower than the display drive voltage EVDD.

[0208] Meanwhile, the main board 900 or the signal processing device 170 can output a display-on signal Spo or a display 180 -off signal Spf to the power supply unit 190 .

[0209] This allows the dc / dc converter 910 to operate when the display 180 is on and to cease operation when the display 180 is off.

[0210] Meanwhile, the main board 900 or the signal processing device 170 can output the switch drive control signal SSwa to the ac / dc converter 905. This allows the ac / dc converter 905 to be driven stably.

[0211] Meanwhile, the main board 900 or the signal processing device 170 can output the switch drive control signal SSwb to the dc / dc converter 910. This allows the dc / dc converter 910 to be driven stably.

[0212] Meanwhile, the main board 900 or the signal processing device 170 can output the switch drive control signal SSwc to the second dc / dc converter 915. This allows the second dc / dc converter 915 to be driven stably.

[0213] Meanwhile, the power supply unit 190 may further include a signal transmission unit FDK connected between the converter 910 and the main board 900 .

[0214] The signal transmission unit FDK can receive the display-on signal Spo or the display-off signal Spf from the main board 900 including the signal processing device 170 or the signal processing device 170 and transmit the display-on signal Spo or the display-off signal Spf to the converter 910 .

[0215] The power supply unit 190 according to an embodiment of the present disclosure may further include a third dc / dc converter 913 that converts an input DC voltage of a first level and outputs a gate driving voltage Vdd of a fourth level.

[0216] At this time, the gate drive voltage Vdd can be lower than the display drive voltage EVDD.

[0217] Meanwhile, the gate driving voltage Vdd and the display driving voltage EVDD can be supplied to the display 180 which is separate from the main board 900 .

[0218] On the other hand, the gate driving voltage Vdd and the display driving voltage EVDD can also be supplied to the main board 900 .

[0219] Meanwhile, the main board 900 or the signal processing device 170 can output the switch drive control signal SSwd to the third dc / dc converter 913. This allows the third dc / dc converter 913 to be driven stably.

[0220] FIG. 8a is a flow chart illustrating a method of operating an image display device in accordance with the present disclosure.

[0221] As shown in the drawing, when an image display device related to the present disclosure includes an organic light-emitting panel, the average brightness level of an input image is calculated (S810), and a brightness level calculated based on the average brightness level is output (S820).

[0222] Then, the image display device according to the present disclosure displays an image corresponding to the calculated brightness level (S830).

[0223] 8b and 8c are diagrams referred to in explaining the operation of FIG. 8a.

[0224] FIG. 8b is a diagram illustrating a luminance transformation based on an average luminance level.

[0225] As shown in the drawings, an image display device related to the present disclosure displays an image based on a level corresponding to approximately 30% of the maximum brightness in order to reduce power consumption when the average brightness level of an input image is approximately 64 based on the APL graph GPa.

[0226] On the other hand, when the average brightness level of an input image is approximately 48, the image display device according to the present disclosure displays the image based on a level corresponding to approximately 50% of the maximum brightness in order to reduce power consumption.

[0227] That is, in order to reduce power consumption, the image display device according to the present disclosure displays an image with a lower brightness level as the average brightness level of the input image increases.

[0228] However, adjusting the brightness level based on the average brightness level of the input image has the disadvantage of causing brightness loss, particularly since the brightness level is adjusted taking into account panel deviations of organic light-emitting panels, resulting in considerable brightness loss.

[0229] FIG. 8c is a diagram illustrating the panel deviation of an organic light-emitting panel.

[0230] In particular, FIG. 8c illustrates the luminance deviation based on the color coordinate for a number of organic light-emitting panels.

[0231] As shown in the drawing, a plurality of luminance deviations such as PTa to PTg may occur due to panel deviations for each organic light emitting panel based on a reference luminance PTm.

[0232] That is, the largest deviation among the luminance deviations between the reference luminance PTm and the plurality of luminances PTa to PTg can be approximately 20% based on the reference luminance PTm.

[0233] As a result, the image display device related to the present disclosure outputs a converted brightness level corresponding to the average brightness level of the input image based on the APL graph GPa of Figure 8b, taking into account the brightness deviation between panels of the organic light-emitting panel, which is approximately 20%.

[0234] Therefore, the image display device according to the present disclosure may suffer from a loss of brightness due to panel deviation or the like.

[0235] Therefore, the present disclosure proposes a method for meeting the power consumption standard while reducing brightness loss even when taking into account panel deviation.

[0236] For this reason, the present disclosure proposes a method for increasing the brightness level by adding an offset based on the current corresponding to the display driving voltage EVDD output from the timing controller 232. For this, see FIG. 9a and subsequent figures.

[0237] FIG. 9a is a flowchart illustrating an operation method of an image display device according to an embodiment of the present disclosure.

[0238] As shown in the drawing, a signal processing device 170 in an image display device 180 according to an embodiment of the present disclosure calculates an average luminance level of an input image (S910).

[0239] Next, the timing controller 232 detects the current corresponding to the display drive voltage EVDD (S915).

[0240] Meanwhile, the power supply unit 190 supplies the timing controller 232 with a display driving voltage EVDD.

[0241] Meanwhile, the timing controller 232 can output a current corresponding to the display driving voltage EVDD from the power supply unit 190 .

[0242] For example, the timing controller 232 may output a current corresponding to the display driving voltage EVDD from the power supply 190 to the data driver 236 or the organic light emitting panel 210 .

[0243] As a result, a current corresponding to the display driving voltage EVDD flows through each pixel of the organic light emitting panel 210, which means that each pixel emits light.

[0244] On the other hand, when outputting a current corresponding to the display drive voltage EVDD, the timing controller 232 detects the current corresponding to the display drive voltage EVDD.

[0245] Then, the timing controller 232 can transmit detected current information, which is information about the detected current, to the signal processing device 170.

[0246] For example, the timing controller 232 can send the detected current information to the signal processing device 170 via I2C communication.

[0247] Next, the signal processing device 170 outputs a brightness level based on the average brightness level of the input image and a brightness level calculated based on the detected current information (S920), and the display 180 displays an image based on the calculated brightness level (S930).

[0248] Specifically, the signal processing device 170 outputs an image signal corresponding to a brightness level calculated based on a brightness level based on the average brightness level of the input image and an offset level corresponding to the detected current information.

[0249] For example, the signal processing device 170 can perform control so that the offset level increases as the detected current information is smaller than the reference level and the difference between them increases.

[0250] That is, the current output from the timing controller 232 is smaller than the reference level, which is the target current level, and the greater the difference, the lower the brightness level displayed on the display 180 becomes.

[0251] To compensate for this difference, the signal processing device 170 controls the current output from the timing controller 232 so that it is smaller than a reference level, which is a target current level, and the larger the difference, the larger the offset level becomes.

[0252] As a result, the current output from the timing controller 232 is smaller than the reference level, which is the target current level, and the greater the difference, the lower the brightness level becomes, so that the brightness level can be increased similarly to the target current level by compensating for this.

[0253] That is, the brightness of the display 180 can be improved while satisfying the power consumption standard. Also, the brightness of the display 180 can be improved based on efficient calculation while satisfying the power consumption standard. Furthermore, the brightness of the display 180 can be improved by taking into account panel deviation while satisfying the power consumption standard.

[0254] FIG. 9b is a flowchart showing an operating method of an image display device according to another embodiment of the present disclosure.

[0255] As shown in the drawing, a signal processing device 170 in an image display device 180 according to an embodiment of the present disclosure calculates an average luminance level of an input image (S910).

[0256] Next, the timing controller 232 detects the current corresponding to the display drive voltage EVDD (S915).

[0257] For example, the current output unit 1024 in the timing controller 232 may output a current corresponding to the display driving voltage EVDD from the power supply unit 190 to the data driver 236 or the organic light emitting panel 210 .

[0258] Then, the current detection unit 1026 in the timing controller 232 detects the current corresponding to the display drive voltage EVDD when outputting the current corresponding to the display drive voltage EVDD.

[0259] For example, the timing controller 232 can send the detected current information to the signal processing device 170 via I2C communication.

[0260] Next, the signal processing device 170 calculates a luminance level corresponding to the average luminance level of the input image (S924).

[0261] Next, the signal processing device 170 calculates an offset level corresponding to the difference between the detected current information and the reference level (S924).

[0262] Next, the signal processing device 170 calculates and outputs a second luminance level based on the luminance level corresponding to the average luminance level and the offset level (S926).

[0263] For example, the signal processing device 170 can sum the luminance level corresponding to the average luminance level and the offset level, and output the summed second luminance level.

[0264] Then, the signal processing device 170 can perform control to display the image based on the second brightness level (S932).

[0265] For example, the signal processing device 170 can output an image signal corresponding to a second brightness level, and the timing controller 232 can control the image data signal based on the image signal corresponding to the second brightness level.

[0266] This allows the organic light emitting panel 210 to display an image corresponding to the second brightness level.

[0267] On the other hand, the signal processing device 170 can perform control such that the offset level increases as the detected current information is smaller than the reference level and the difference between them increases.

[0268] As a result, the current output from the timing controller 232 is smaller than the reference level, which is the target current level, and the greater the difference, the lower the brightness level becomes, so that the brightness level can be increased similarly to the target current level by compensating for this.

[0269] That is, the brightness of the display 180 can be improved while satisfying the power consumption standard. Also, the brightness of the display 180 can be improved based on efficient calculation while satisfying the power consumption standard. Furthermore, the brightness of the display 180 can be improved by taking into account panel deviation while satisfying the power consumption standard.

[0270] FIG. 10 is an example of an internal block diagram of an image display device according to an embodiment of the present disclosure.

[0271] As shown in the drawing, the signal processing device 170 processes an input image and outputs an image signal to a timing controller 232 .

[0272] On the other hand, the signal processing device 170 can include an average brightness level calculation unit 1010 that calculates the average brightness level of the input image, an offset level calculation unit 1015 that calculates the offset level based on the detected current information Idt from the timing controller 232, and a data output unit 1018 that outputs an image signal corresponding to the brightness level based on the average brightness level and the brightness level calculated based on the offset level.

[0273] Meanwhile, the power supply unit 190 supplies the timing controller 232 with a display driving voltage EVDD.

[0274] Meanwhile, the power supply unit 190 can further supply the gate driving voltage Vdd to the timing controller 232 .

[0275] At this time, it is preferable that the voltage level of the display driving voltage EVDD is about 24V, which is higher than the gate driving voltage Vdd, which is about 12V.

[0276] On the other hand, the timing controller 232 drives the organic light-emitting panel 210 based on the image signal from the signal processing device 170 .

[0277] Meanwhile, the timing controller 232 may include a current output unit 1024 that outputs a current lv corresponding to the display drive voltage EVDD from the power supply unit 190, and a current detection unit 1026 that detects a current corresponding to the display drive voltage EVDD.

[0278] Meanwhile, the timing controller 232 can transmit the detected current information Idt to the signal processing device 170 via I2C communication.

[0279] Meanwhile, the timing controller 232 may further include a data output unit 1020 that outputs an image data signal (RGB data) based on the image signal from the signal processing device 170, and a clock output unit 1022 that outputs a clock signal (Timing CLK).

[0280] 10, the timing controller 232 outputs the display driving voltage EVDD or a first current corresponding to the display driving voltage EVDD, detects the first current, and sends detected current information Idt of the first current to the signal processing device 170.

[0281] On the other hand, the signal processing device 170 according to one embodiment of the present disclosure outputs an image signal corresponding to a brightness level based on the average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information Idt detected by the timing controller 232 in response to the display drive voltage EVDD.

[0282] This allows the brightness of the display 180 to be improved while satisfying the power consumption standard. Also, the brightness of the display 180 can be improved based on efficient calculation while satisfying the power consumption standard. Furthermore, the brightness of the display 180 can be improved by taking into account panel deviation while satisfying the power consumption standard.

[0283] Meanwhile, the signal processing device 170 can control the offset level so that the greater the difference between the detected current information Idt and the reference level, the greater the offset level, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0284] On the other hand, when the detected current information Idt is equal to or greater than the reference level, the signal processing device 170 can output an image signal corresponding to a luminance level based on the average luminance level of the input image without an offset level, thereby satisfying the power consumption standard.

[0285] Meanwhile, the signal processing device 170 outputs an image signal corresponding to a brightness level based on the average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information Idt. This makes it possible to improve the brightness of the display 180 while satisfying the power consumption standard. Also, it makes it possible to improve the brightness of the display 180 based on efficient calculation while satisfying the power consumption standard. Furthermore, it makes it possible to improve the brightness of the display 180 by taking panel deviation into consideration while satisfying the power consumption standard.

[0286] Meanwhile, the signal processing device 170 may control the offset level to be smaller as the level of the display driving voltage EVDD increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0287] 11a to 12 are diagrams to be referred to in explaining the operations of FIGS. 9a to 10. FIG.

[0288] FIG. 11a illustrates a case where the average luminance level of the input image is a first level, and the level of the detected current information Idt is a second level that is lower than the reference level.

[0289] As shown in the figure, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a second level Ida that is smaller than the reference level Iref, the signal processing device 170 can calculate a first offset level Δa corresponding to the second level.

[0290] FIG. 11b illustrates an APL graph corresponding to the first offset level Δa in FIG. 11a.

[0291] As shown in the drawing, when the average brightness level of the input image is a first level, the signal processing device 170 can output a brightness level based on a first APL graph GR1.

[0292] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a second level Ida that is lower than the reference level Iref, the signal processing device 170 can output the brightness level based on the second APL graph GR2 that is increased by the first offset level Δa.

[0293] That is, the signal processing device 170 can output an image signal based on the first offset level Δa and the first level.

[0294] For example, the signal processing device 170 can output an image signal based on a luminance level obtained by adding the first offset level Δa and the first level.

[0295] This allows the brightness level of the image displayed on the display 180 to be improved by the first offset level Δa. That is, the brightness of the display 180 can be improved based on the detected current while still satisfying the power consumption standard.

[0296] For example, when the average brightness level of the input image is the Lpa level, if the level of the detected current information Idt is a second level lower than the reference level while outputting an image signal corresponding to the brightness level of LV1, the signal processing device 170 can add an offset level of Δpa and output an image signal corresponding to the brightness level of LV1a, which is higher than LV1.

[0297] As another example, when the average brightness level of the input image is at the LPb level, which is greater than Lpa, the signal processing device 170 can output an image signal corresponding to a brightness level of LV2, which is less than LV1, by adding an offset level of Δpb, which is less than Δpa, if the level of the detected current information Idt is at a second level, which is less than the reference level, and output an image signal corresponding to a brightness level of LV2a, which is greater than LV2.

[0298] As yet another example, when the average brightness level of the input image is an LPc level greater than Lpb, the signal processing device 170 can output an image signal corresponding to a brightness level of LV3, which is lower than LV2, by adding an offset level of Δpc, which is smaller than Δpb, if the level of the detected current information Idt is a second level, which is lower than the reference level, and output an image signal corresponding to a brightness level of LV3a, which is higher than LV3.

[0299] As yet another example, when the average brightness level of the input image is an LPd level greater than Lpc, the signal processing device 170 can output an image signal corresponding to a brightness level of LV4, which is lower than LV3, by adding an offset level of Δpd, which is smaller than Δpc, if the level of the detected current information Idt is a second level, which is lower than the reference level, and output an image signal corresponding to a brightness level of LV4a, which is higher than LV4.

[0300] That is, the signal processing device 170 can perform control such that the offset level decreases as the average luminance level of the input image increases.

[0301] For example, when the average luminance level of the input image is a first level LV1 and the level of the detected current information Idt is a second level Ida that is lower than the reference level, the signal processing device 170 can output an image signal based on a first offset level Δpa corresponding to the second level Ida and the first level, and when the average luminance level of the input image is a third level LV3 that is higher than the first level LV1 and the level of the detected current information Idt is the second level that is lower than the reference level, the signal processing device 170 can output an image signal based on a second offset level Δpc that is lower than the first offset level Δpa and the third level. This makes it possible to improve the luminance of the display 180 based on the detected current while satisfying the power consumption standard.

[0302] FIG. 11c illustrates a case where the average luminance level of the input image is a first level, and the level of the detected current information Idt is a third level that is smaller than the reference level and larger than the second level.

[0303] As shown in the drawing, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a third level Idb that is smaller than the reference level Iref and larger than the second level Ida, the signal processing device 170 can calculate a second offset level Δb corresponding to the third level.

[0304] In this case, the signal processing device 170 can control the second offset level Δb to be smaller than the first offset level Δa, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0305] FIG. 11d illustrates an APL graph corresponding to the second offset level Δb in FIG. 11c.

[0306] As shown in the drawing, when the average brightness level of the input image is a first level, the signal processing device 170 can output a brightness level based on a first APL graph GR1.

[0307] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a third level Idb that is smaller than the reference level Iref and larger than the second level Ida, the signal processing device 170 can output the brightness level based on the third APL graph GR3 that is increased by the second offset level Δb.

[0308] In this case, the third APL graph GR3 can be at a lower level than the second APL graph GR2.

[0309] That is, the signal processing device 170 can output an image signal based on the third APL graph GR3 and the first level.

[0310] For example, the signal processing device 170 can output an image signal based on the luminance level obtained by adding the second offset level Δb and the first level.

[0311] This allows the brightness level of the image displayed on the display 180 to be improved by the second offset level Δb. That is, the brightness of the display 180 can be improved based on the detected current while still satisfying the power consumption standard.

[0312] For example, when the average luminance level of the input image is the Lpa level, if the level of the detected current information Idt is lower than the reference level and is a third level higher than the second level while outputting an image signal corresponding to the luminance level of LV1, the signal processing device 170 can add an offset level and output an image signal corresponding to a luminance level of LV1b higher than LV1. In this case, LV1b can be lower than LV1a.

[0313] As another example, when the average brightness level of the input image is a level LPb that is greater than Lpa, the signal processing device 170 may output an image signal corresponding to a brightness level LV2 that is less than LV1, and when the level of the detected current information Idt is a third level that is less than the reference level and greater than the second level, add an offset level to output an image signal corresponding to a brightness level LV2b that is greater than LV2. In this case, LV2b may be less than LV2a.

[0314] As yet another example, when the average luminance level of the input image is a level LPc greater than Lpb, the signal processing device 170 may output an image signal corresponding to a luminance level LV3 less than LV2, and when the level of the detected current information Idt is a third level less than the reference level and greater than the second level, add an offset level to output an image signal corresponding to a luminance level LV3b greater than LV3. In this case, LV3b may be smaller than LV3a.

[0315] As yet another example, when the average luminance level of the input image is a level LPd greater than Lpc, the signal processing device 170 may output an image signal corresponding to a luminance level LV4 lower than LV3, and when the level of the detected current information Idt is a third level lower than the reference level and higher than the second level, add an offset level to output an image signal corresponding to a luminance level LV4b higher than LV4. In this case, LV4b may be lower than LV4a.

[0316] That is, the signal processing device 170 can perform control such that the offset level decreases as the average luminance level of the input image increases.

[0317] Furthermore, the signal processing device 170 can perform control such that the average brightness level of the input image is constant, but the detected current information Idt is smaller than the reference level, and the larger the difference, the larger the offset level becomes.

[0318] That is, the signal processing device 170 can control the offset level so that, while the average brightness level of the input image is constant, the detected current information Idt is smaller than the reference level, and the smaller the difference between the detected current and the reference level, the smaller the offset level becomes. This makes it possible to improve the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0319] FIG. 11e illustrates a case where the average luminance level of the input image is the first level, and the level of the detected current information Idt is the fourth level that is equal to or higher than the reference level.

[0320] As shown in the figure, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a fourth level Iref that is greater than or equal to the reference level Iref, the signal processing device 170 can calculate the offset level to zero or can not calculate the offset level.

[0321] FIG. 11f illustrates an APL graph corresponding to FIG. 11e.

[0322] As shown in the drawing, when the average brightness level of the input image is a first level, the signal processing device 170 can output a brightness level based on a first APL graph GR1.

[0323] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a fourth level that is equal to or higher than the reference level Iref, the signal processing device 170 can output an image signal corresponding to the first level.

[0324] That is, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a fourth level that is equal to or higher than the reference level Iref, the signal processing device 170 can output the brightness level based on the first APL graph GR1.

[0325] This allows the brightness of the display 180 to be increased based on the detected current while still meeting power consumption standards.

[0326] For example, when the average brightness level of the input image is the Lpa level, the signal processing device 170 can output an image signal corresponding to the brightness level of LV1 without adding an offset level if the level of the detected current information Idt is a fourth level that is higher than the reference level while outputting the image signal corresponding to the brightness level of LV1.

[0327] As another example, when the average brightness level of the input image is at the LPb level, which is greater than Lpa, the signal processing device 170 can output an image signal corresponding to the brightness level of LV2, which is less than LV1, without adding an offset level if the level of the detected current information Idt is at a fourth level, which is greater than or equal to the reference level.

[0328] As yet another example, when the average brightness level of the input image is an LPc level that is greater than Lpb, the signal processing device 170 can output an image signal corresponding to a brightness level of LV3 that is less than LV2 while the level of the detected current information Idt is a fourth level that is greater than or equal to the reference level, without adding an offset level.

[0329] As yet another example, when the average brightness level of the input image is an LPd level greater than Lpc, the signal processing device 170 can output an image signal corresponding to a brightness level of LV4, which is lower than LV3, without adding an offset level if the level of the detected current information Idt is a fourth level greater than or equal to the reference level.

[0330] That is, the signal processing device 170 can control the brightness level of the image signal output from the signal processing device 170 so that the higher the average brightness level, the lower the brightness level of the image signal output from the signal processing device 170. This makes it possible to improve the brightness of the display 180 while satisfying the power consumption standard.

[0331] FIG. 12 illustrates an example in which the level of the display drive voltage EVDD increases or the current corresponding to the display drive voltage EVDD increases as the cumulative drive period of the display 180 increases.

[0332] FIG. 12(a) illustrates an example in which the level of the display driving voltage EVDD increases as the cumulative driving period of the display 180 based on the organic light emitting panel 210 increases.

[0333] As shown in the figure, the signal processing device 170 can control the power supply unit 190 to increase the level of the display driving voltage EVDD to prevent deterioration as the cumulative driving period of the display 180 based on the organic light emitting panel 210 increases.

[0334] In this case, the signal processing device 170 may control the offset level to be smaller as the level of the display driving voltage EVDD increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0335] That is, the signal processing device 170 can control the offset level to be smaller as the cumulative driving period of the display 180 increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0336] FIG. 12(b) illustrates an example in which the level of the display driving current Idd increases as the cumulative driving period of the display 180 based on the organic light emitting panel 210 increases.

[0337] As shown in the figure, the signal processing device 170 can control the power supply unit 190 to increase the level of the display driving current Idd to prevent deterioration as the cumulative driving period of the display 180 based on the organic light emitting panel 210 increases.

[0338] In this case, the signal processing device 170 may control the offset level to be smaller as the level of the display driving current Idd increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0339] That is, the signal processing device 170 can control the offset level to be smaller as the cumulative driving period of the display 180 increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0340] FIG. 13 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure.

[0341] As shown in the drawings, an image display device 100b according to another embodiment of the present disclosure includes an organic light-emitting panel 210, a signal processing device 170b that performs signal processing on an input image and outputs an image signal, a timing controller 232b that drives the organic light-emitting panel 210 based on the image signal from the signal processing device 170b, and a power supply unit 190 that supplies a display drive voltage EVDD to the timing controller 232b.

[0342] On the other hand, the signal processing device 170b in FIG. 13 does not include the offset level calculation unit 1015, unlike the device in FIG.

[0343] Instead, the timing controller 232b in FIG. 13 differs from that in FIG. 10 in that it includes an offset level calculation unit 1015b.

[0344] That is, the signal processing device 170b in FIG. 13 can include an average brightness level calculation unit 1010 that calculates the average brightness level of the input image, and a data output unit 1018 that outputs an image signal corresponding to a brightness level based on the average brightness level.

[0345] On the other hand, a timing controller 232b according to another embodiment of the present disclosure may include a current output unit 1024 that outputs a current lv corresponding to the display drive voltage EVDD from the power supply unit 190, a current detection unit 1026 that detects a current corresponding to the display drive voltage EVDD, and an offset level calculation unit 1015 that calculates an offset level based on detected current information Idt from the current detection unit 1026.

[0346] Meanwhile, the timing controller 232b may further include a data output unit 1020b that outputs an image data signal (RGB data) based on the image signal from the signal processing device 170b, and a clock output unit 1022 that outputs a clock signal (Timing CLK).

[0347] Meanwhile, a timing controller 232b according to another embodiment of the present disclosure outputs image data signals (RGB data) corresponding to a brightness level based on the average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information Idt detected by the timing controller 232b in response to the display driving voltage EVDD.

[0348] This allows the brightness of the display 180 to be improved while satisfying the power consumption standard. Also, the brightness of the display 180 can be improved based on efficient calculation while satisfying the power consumption standard. Furthermore, the brightness of the display 180 can be improved by taking into account panel deviation while satisfying the power consumption standard.

[0349] Meanwhile, the timing controller 232b may control the offset level so that the greater the difference between the detected current information Idt and the reference level, the greater the offset level, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0350] On the other hand, when the detected current information Idt is equal to or greater than the reference level, the timing controller 232b can output an image data signal corresponding to a luminance level based on the average luminance level of the input image without an offset level, thereby satisfying the power consumption standard.

[0351] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a second level lower than the reference level, the timing controller 232b can output an image data signal (RGB data) based on the first level and a first offset level corresponding to the second level, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0352] On the other hand, when the average brightness level of the input image is a first level and the level of the detected current information Idt is a third level that is lower than the reference level and higher than the second level, the timing controller 232b can output an image data signal (RGB data) based on the first level and a second offset level corresponding to the third level, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0353] Meanwhile, the timing controller 232b may include a current detection unit 1026 that detects a current output corresponding to the display drive voltage EVDD, an offset level calculation unit 1015 that calculates an offset level based on detected current information Idt from the current detection unit 1026, and a data output unit 1018 that outputs image data signals (RGB data) corresponding to a brightness level based on an average brightness level and a brightness level calculated based on the offset level. This makes it possible to improve the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0354] Meanwhile, the timing controller 232b can control the brightness level of the output image data signal to be lower as the average brightness level increases, thereby improving the brightness of the display 180 while satisfying the power consumption standard.

[0355] Meanwhile, the timing controller 232b may control the offset level to be smaller as the level of the display driving voltage EVDD increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0356] Meanwhile, the timing controller 232b may control the offset level to be smaller as the cumulative driving period of the display 180 increases, thereby improving the brightness of the display 180 based on the detected current while satisfying the power consumption standard.

[0357] While the above illustrates and describes preferred embodiments of the present disclosure, the present disclosure is not limited to the specific embodiments described above, and various modifications can be made by a person having ordinary skill in the art to which the invention pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical ideas and perspectives of the present disclosure.

Claims

1. An image display device, Organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The signal processing device includes: an image display device that outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to a display drive voltage.

2. 2. The image display device according to claim 1, wherein said signal processing device controls said offset level so that the greater the difference between said detected current information and a reference level, the greater said offset level becomes.

3. 2. The image display device according to claim 1, wherein the signal processing device outputs an image signal corresponding to a luminance level based on an average luminance level of an input image without the offset level when the detected current information is equal to or greater than a reference level.

4. 2. The image display device according to claim 1, wherein when the average brightness level of the input image is a first level and the level of the detected current information is a second level that is lower than a reference level, the signal processing device outputs an image signal based on a first offset level corresponding to the second level and the first level.

5. 5. The image display device according to claim 4, wherein when the average luminance level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than a second level, the signal processing device outputs an image signal based on a second offset level corresponding to the third level and the first level.

6. 6. The image display device according to claim 5, wherein the signal processing device controls the second offset level so that the second offset level is smaller than the first offset level.

7. 5. The image display device according to claim 4, wherein the signal processing device outputs an image signal corresponding to the first level when the average brightness level of the input image is a first level and the level of the detected current information is a fourth level that is equal to or higher than a reference level.

8. 5. The image display device according to claim 4, wherein said signal processing device controls the luminance level of the image signal output from said signal processing device so that the luminance level of the image signal output from said signal processing device decreases as said average luminance level increases.

9. The signal processing device includes: When the average luminance level of the input image is a first level and the level of the detected current information is a second level lower than a reference level, outputting an image signal based on a first offset level corresponding to the second level and the first level; 2. The image display device according to claim 1, wherein when the average luminance level of the input image is a third level greater than the first level and the level of the detected current information is the second level less than a reference level, an image signal based on a second offset level less than the first offset level and the third level is output.

10. 2. The image display device according to claim 1, wherein the signal processing device controls the offset level so that the offset level decreases as the level of the display drive voltage increases.

11. 2. The image display device according to claim 1, wherein the signal processing device controls the offset level so that the offset level decreases as the cumulative driving period of the display increases.

12. The signal processing device includes: an average brightness level calculation unit that calculates an average brightness level of the input image; an offset level calculation unit that calculates the offset level based on the detected current information from the timing controller; 2. The image display device according to claim 1, further comprising: a data output section that outputs an image signal corresponding to a luminance level based on the average luminance level and a luminance level calculated based on the offset level.

13. Organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The timing controller outputting the display driving voltage or a first current corresponding to the display driving voltage, detecting the first current, and transmitting detected current information of the first current to a signal processing device; The signal processing device includes: an image display device that outputs an image signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to the detected current information;

14. 14. The image display device according to claim 13, wherein the signal processing device controls the offset level so that the greater the difference between the detected current information and a reference level, the greater the offset level becomes.

15. 14. The image display device according to claim 13, wherein when the average luminance level of the input image is a first level and the level of the detected current information is a second level that is lower than a reference level, the signal processing device outputs an image signal based on a first offset level corresponding to the second level and the first level.

16. 16. The image display device according to claim 15, wherein when the average luminance level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than the second level, the signal processing device outputs an image signal based on a second offset level corresponding to the third level and the first level.

17. Organic light-emitting panels; a signal processing device that processes an input image and outputs an image signal; a timing controller that drives the organic light-emitting panel based on an image signal from the signal processing device; a power supply unit that supplies a display drive voltage to the timing controller; The timing controller outputs an image data signal corresponding to a brightness level based on an average brightness level of the input image and a brightness level calculated based on an offset level corresponding to detected current information detected by the timing controller in response to the display drive voltage.

18. 18. The image display device according to claim 17, wherein when the average luminance level of the input image is a first level and the level of the detected current information is a second level lower than a reference level, the timing controller outputs an image data signal based on a first offset level corresponding to the second level and the first level.

19. 18. The image display device according to claim 17, wherein when the average luminance level of the input image is a first level and the level of the detected current information is a third level that is smaller than a reference level and larger than the second level, the timing controller outputs an image data signal based on a second offset level corresponding to the third level and the first level.

20. The timing controller a current detection unit that detects a current output corresponding to the display drive voltage; an offset level calculation unit that calculates the offset level based on detected current information from the current detection unit; 18. The image display device according to claim 17, further comprising: a data output section that outputs an image data signal corresponding to a luminance level based on the average luminance level and a luminance level calculated based on the offset level.

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