Image display device

Abstract

The invention relates to an image display device. An image display device according to an embodiment of the present disclosure includes: a display; a signal processing device for outputting an image signal to the display; a relay element for switching the input AC voltage; a converter connected in parallel with one end of the relay element; a microcomputer that operates on the basis of the DC voltage from the converter; a switch that is disposed between the converter and the signal processing device and operates on the basis of a control signal output from the microcomputer; a first standby mode in which a voltage of a first level is supplied to the microcomputer on the basis of the disconnection of the relay element, the disconnection of the switch, and the operation of the converter; in the second standby mode, a voltage of a second level higher than the first level is supplied to the signal processing device on the basis of the turn-off of the relay element, the turn-on of the switch, and the operation of the converter. Consequently, power consumption during the standby mode can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an image display apparatus, and more particularly, to an image display apparatus capable of reducing power consumption in a standby mode. BACKGROUND

[0002] An image display apparatus is an apparatus that displays an image.

[0003] In recent years, in response to demands due to an increase in image resolution and an increase in image definition, there is a tendency for display resolution or peak luminance in an image display apparatus to increase.

[0004] On the other hand, the greater the display resolution or peak luminance of a display, the greater the power consumption provided to the display.

[0005] On the other hand, various studies on reducing power consumption in a standby mode of an image display apparatus are being attempted. SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] The present disclosure solves the problem of providing an image display apparatus capable of reducing power consumption in a standby mode.

[0008] Another problem solved by the present disclosure is to provide an image display apparatus that implements a plurality of standby modes and is capable of reducing power consumption in each standby mode.

[0009] TECHNICAL SOLUTION TO THE PROBLEM

[0010] An image display apparatus according to an embodiment of the present disclosure for solving the above-described problem includes a display, a signal processing apparatus that outputs an image signal to the display, a relay element that switches an input alternating current voltage, a converter that is connected in parallel to one end of the relay element, a microcomputer that operates based on a direct current voltage from the converter, and a switch that is disposed between the converter and the signal processing apparatus and operates based on a control signal output from the microcomputer. In a first standby mode, a voltage of a first level is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, and operation of the converter. In a second standby mode, a voltage of a second level that is higher than the first level is supplied to the signal processing apparatus based on disconnection of the relay element, connection of the switch, and operation of the converter.

[0011] On the other hand, the converter can output a voltage of a first level in the first standby mode and output a voltage of a second level that is higher than the first level in the second standby mode.

[0012] On the other hand, power consumption in the first standby mode can be less than power consumption in the second standby mode.

[0013] On the other hand, in the first standby mode, the second level of voltage is not supplied to the signal processing device.

[0014] On the other hand, the image display device according to an embodiment of the disclosure can further include a second converter connected to the other end of the relay element, which converts the input AC voltage from the relay element into a DC voltage, and a third converter which converts the level of the DC voltage from the second converter.

[0015] On the other hand, the third converter can supply a third level of voltage higher than the second level to the signal processing device based on the turn-on of the relay element, the operation of the second converter, and the operation of the third converter in an operation mode after the first standby mode or the second standby mode.

[0016] On the other hand, when switching from the first standby mode to the second standby mode, the switch is turned on, and thus the second level of voltage higher than the first level can be supplied to the signal processing device.

[0017] On the other hand, when switching from the second standby mode to the first standby mode, the switch is turned off, and thus the first level of voltage can be supplied to the signal processing device.

[0018] On the other hand, the image display device according to an embodiment of the disclosure can further include a step-down unit which outputs the first level of voltage by stepping down the level of the DC voltage from the converter; in the first standby mode, the first level of voltage can be supplied to the microcomputer based on the turn-off of the relay element, the turn-off of the switch, the operation of the converter, and the operation of the step-down unit; and in the second standby mode, the second level of voltage higher than the first level can be supplied to the signal processing device based on the turn-off of the relay element, the turn-on of the switch, and the operation of the converter.

[0019] On the other hand, the converter can output a fourth level of voltage higher than the first level in the first standby mode, and output the second level of voltage higher than the fourth level in the second standby mode.

[0020] On the other hand, the converter can output a fourth level of voltage higher than the first level in the first standby mode; and the step-down unit can step down the fourth level of voltage to the first level in the first standby mode.

[0021] On the other hand, the step-down unit can step down the second level of voltage to the first level in the second standby mode.

[0022] On the other hand, the converter can include a flyback converter.

[0023] An image display device according to another embodiment of the present disclosure includes a display, a signal processing device that outputs an image signal to the display, a relay element that switches an input AC voltage, a converter that is connected in parallel to one end of the relay element, a step-down section that steps down a level of a DC voltage from the converter, a microcomputer that operates based on the DC voltage from the converter, a switch that is disposed between the converter and the signal processing device and operates based on a control signal output from the microcomputer, in a first standby mode, a first level of voltage is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, operation of the converter, and operation of the step-down section, and in a second standby mode, a second level of voltage that is higher than the first level is supplied to the signal processing device based on disconnection of the relay element, connection of the switch, and operation of the converter.

[0024] On the other hand, the image display device according to another embodiment of the present disclosure can further include a second converter that is connected to the other end of the relay element and converts the input AC voltage from the relay element into a DC voltage, and a third converter that steps down a level of the DC voltage from the second converter.

[0025] On the other hand, the third converter can supply a third level of voltage that is higher than the second level to the signal processing device based on connection of the relay element, operation of the second converter, and operation of the third converter in an operation mode after the first standby mode or the second standby mode.

[0026] Effects of Invention

[0027] An image display device according to one embodiment of the present disclosure includes a display, a signal processing device that outputs an image signal to the display, a relay element that switches an input AC voltage, a converter that is connected in parallel to one end of the relay element, a microcomputer that operates based on a DC voltage from the converter, and a switch that is disposed between the converter and the signal processing device and operates based on a control signal output from the microcomputer, in a first standby mode, a first level of voltage is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, and operation of the converter, and in a second standby mode, a second level of voltage that is higher than the first level is supplied to the signal processing device based on disconnection of the relay element, connection of the switch, and operation of the converter. Thus, power consumption in standby mode can be reduced. In particular, power consumption can be reduced in a plurality of standby modes.

[0028] On the other hand, the converter can output a first level of voltage in the first standby mode and a second level of voltage that is higher than the first level in the second standby mode. Thus, power consumption can be reduced in the first standby mode and the second standby mode.

[0029] On the other hand, the power consumption in the first standby mode can be smaller than the power consumption in the second standby mode. Thus, the power consumption in the standby mode can be reduced.

[0030] On the other hand, in the first standby mode, the second level of voltage can not be supplied to the signal processing device. Thus, the power consumption in the first standby mode can be reduced.

[0031] On the other hand, the image display device according to an embodiment of the present disclosure can further include a second converter connected to the other end of the relay element, which converts the input AC voltage from the relay element into a DC voltage, and a third converter which converts the level of the DC voltage from the second converter. Thus, the operating voltage can be stably supplied to the signal processing device through the third converter.

[0032] On the other hand, the third converter can supply, in the operating mode after the first standby mode or the second standby mode, a voltage of a third level higher than the second level to the signal processing device based on the turn-on of the relay element, the operation of the second converter, and the operation of the third converter. Thus, the operating voltage can be stably supplied to the signal processing device through the third converter.

[0033] On the other hand, when the first standby mode is converted to the second standby mode, the switch is turned on, so that a voltage of the second level higher than the first level can be supplied to the signal processing device. Thus, the power consumption in the standby mode can be reduced.

[0034] On the other hand, when the second standby mode is converted to the first standby mode, the switch is turned off, so that a voltage of the first level can be supplied to the signal processing device. Thus, the power consumption in the standby mode can be reduced.

[0035] On the other hand, the image display device according to an embodiment of the present disclosure can further include a step-down unit which outputs a voltage of the first level by stepping down the level of the DC voltage from the converter, and in the first standby mode, a voltage of the first level can be supplied to the microcomputer based on the turn-off of the relay element, the turn-off of the switch, the operation of the converter, and the operation of the step-down unit, and in the second standby mode, a voltage of the second level higher than the first level can be supplied to the signal processing device based on the turn-off of the relay element, the turn-on of the switch, and the operation of the converter. Thus, the power consumption in the standby mode can be reduced.

[0036] On the other hand, the converter can output a voltage of a fourth level higher than the first level in the first standby mode, and output a voltage of the second level higher than the fourth level in the second standby mode. Thus, the power consumption in the standby mode can be reduced.

[0037] On the other hand, the converter can output a voltage of a fourth level higher than the first level in the first standby mode; and the step-down unit can step down the voltage of the fourth level to the first level in the first standby mode. Thereby, it is possible to reduce the power consumption in the standby mode.

[0038] On the other hand, the step-down unit can step down the voltage of the second level to the first level in the second standby mode. Thereby, it is possible to reduce the power consumption in the standby mode.

[0039] On the other hand, the converter can include a flyback converter. Thereby, it is possible to reduce the power consumption in the standby mode.

[0040] An image display device according to another embodiment of the present disclosure includes a display; a signal processing device that outputs an image signal to the display; a relay element that switches an input AC voltage; a converter that is connected in parallel to one end of the relay element; a step-down unit that steps down a level of a DC voltage from the converter; a microcomputer that operates based on the DC voltage from the converter; a switch that is disposed between the converter and the signal processing device and operates based on a control signal output from the microcomputer; in a first standby mode, based on disconnection of the relay element, disconnection of the switch, operation of the converter, and operation of the step-down unit, a voltage of a first level is supplied to the microcomputer; and in a second standby mode, based on disconnection of the relay element, connection of the switch, and operation of the converter, a voltage of a second level higher than the first level is supplied to the signal processing device. Thereby, it is possible to reduce the power consumption in the standby mode. In particular, it is possible to reduce the power consumption in each of a plurality of standby modes.

[0041] On the other hand, the image display device according to another embodiment of the present disclosure can further include a second converter that is connected to the other end of the relay element and converts the input AC voltage from the relay element into a DC voltage; and a third converter that steps down a level of the DC voltage from the second converter. Thereby, it is possible to stably supply an operating voltage to the signal processing device by the third converter.

[0042] On the other hand, the third converter can supply a voltage of a third level higher than the second level to the signal processing device based on connection of the relay element, operation of the second converter, and operation of the third converter in an operation mode after the first standby mode or the second standby mode. Thereby, it is possible to stably supply an operating voltage to the signal processing device by the third converter. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 FIG. 1 is a diagram illustrating an image display device according to an embodiment of the present disclosure.

[0044] Figure 2 is Figure 1 is an example of an internal block diagram of the image display device of FIG. 1.

[0045] Figure 3 is an example of an internal block diagram of a signal processing device of Figure 2

[0046] Figure 4a is a diagram illustrating a control method of a remote control device of Figure 2

[0047] Figure 4b is an internal block diagram of a remote control device of Figure 2

[0048] Figure 5 is an example of an internal block diagram of a display of Figure 2

[0049] Figures 6a to 6b is a diagram referred to in explaining an organic light emitting panel of Figure 5

[0050] Figure 7 is an example of an internal block diagram of an image display device of an embodiment of the present disclosure.

[0051] Figure 8 is an example of a circuit diagram of a second converter of Figure 7

[0052] Figure 9 is an example of a circuit diagram of a third converter of Figure 7

[0053] Figure 10 is an example of a circuit diagram of a converter of Figure 7

[0054] Figure 11 is an example of an internal block diagram of an image display device related to the present disclosure.

[0055] Figures 12a to 12e is a diagram referred to in explaining Figure 11

[0056] Figure 13 is an example of an internal block diagram of an image display device of an embodiment of the present disclosure.

[0057] Figures 14a to 16d is a diagram referred to in explaining Figure 13

[0058] Figure 17 is an example of an internal block diagram of an image display device of another embodiment of the present disclosure.

[0059] Figure 18 is an example of an internal block diagram of an image display device of yet another embodiment of the present disclosure.

[0060] ​​​​​​​​​​Figures 19a to 19d is a description Figure 18 of the figures.

[0061] Figure 20 is an internal block diagram of an image display apparatus according to another embodiment of the disclosure. DETAILED DESCRIPTION

[0062] Hereinafter, the disclosure will be described in greater detail with reference to the accompanying drawings.

[0063] The suffixes "module" and "part" used in the following description for components are merely assigned to facilitate the disclosure and are not intended to give a special meaning or role. Thus, the "module" and "part" can be used interchangeably with each other.

[0064] Figure 1 is a diagram illustrating an image display apparatus according to an embodiment of the disclosure.

[0065] Referring to the drawings, the image display apparatus 100 can include a display 180.

[0066] The display resolution of the display 180 is increasing in a tendency of 2K, 4K, 8K, 16K, etc., and the peak luminance that can be displayed in the display 180 is increasing. Thus, the power consumption of the power supply supplied to the display 180 is increasing.

[0067] On the other hand, the display 180 can be implemented in any one of various panels. For example, the display 180 can be any one of a liquid crystal display panel (LCD panel), an organic light emitting panel (OLED panel), an inorganic light emitting panel (LED panel), etc.

[0068] The liquid crystal display panel can need an additional backlight in addition to a panel for displaying an image.

[0069] On the other hand, the organic light emitting panel or the inorganic light emitting panel does not need an additional backlight for image display.

[0070] The image display apparatus 100 according to an embodiment of the disclosure proposes a scheme to reduce power consumption in a standby mode. In particular, a scheme to reduce power consumption in a plurality of standby modes, respectively, is proposed.

[0071] To this end, the image display apparatus 100 according to an embodiment of the disclosure includes a display 180, a signal processing apparatus 170 outputting an image signal to the display 180, a relay element RL performing switching control on an input alternating voltage Va, a converter 925 connected in parallel to one end n2 of the relay element RL, and a microcomputer 920. Figure 2 Figure 13 Figure 13 Figure 13 ​​​a switch (ST) configured between the converter 925 and the signal processing device 170, which operates based on a control signal output from the microcomputer 173. Figure 13

[0072] On the other hand, the image display device 100 of one embodiment of the present disclosure supplies the voltage Vzw of the first level to the microcomputer 173 based on the disconnection of the relay element RL, the disconnection of the switch ST, and the operation of the converter 925 in the first standby mode.

[0073] On the other hand, the image display device 100 of one embodiment of the present disclosure supplies the voltage Vst of the second level higher than the first level to the signal processing device 170 based on the disconnection of the relay element RL, the connection of the switch ST, and the operation of the converter 925 in the second standby mode. Thus, the power consumption in the standby mode can be reduced. In particular, the power consumption can be reduced in each of the plurality of standby modes.

[0074] On the other hand, Figure 1 The image display device 100 of one embodiment of the present disclosure can be a TV, a monitor, a tablet PC, a mobile terminal, or the like.

[0075] Figure 2 is Figure 1 An internal block diagram of the image display device of one embodiment of the present disclosure is described below.

[0076] With reference to Figure 2 The image display device 100 of one embodiment of the present disclosure can include an image receiving portion 105, an external device interface portion 130, a storage portion 140, a user input interface portion 150, a sensor portion (not illustrated), a signal processing device 170, a display 180, and an audio output portion 185.

[0077] The image receiving portion 105 can include a tuner portion 110, a demodulation portion 120, a network interface portion 130, and an external device interface portion 130.

[0078] On the other hand, the image receiving portion 105 can include only the tuner portion 110, the demodulation portion 120, and the external device interface portion 130, which are different from those of the drawing. That is, the network interface portion 130 can not be included.

[0079] The tuner portion 110 selects a channel selected by a user or an RF broadcast signal corresponding to all channels stored in advance from among RF (Radio Frequency) broadcast signals received through an antenna (not illustrated). The selected RF broadcast signal is then converted into an intermediate frequency signal or a baseband image or voice signal.

[0080] ​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 picture or voice signal (CVBS / SIF, Composite Video Broadcast Signal / Sound Intermediate Frequency). That is, the tuner section 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband picture or voice signal (CVBS / SIF) output from the tuner section 110 can be directly input to the signal processing device 170.

[0081] On the other hand, the tuner section 110 can have a plurality of tuners to receive broadcast signals of a plurality of channels. Alternatively, it can also be a single tuner that receives broadcast signals of a plurality of channels at the same time.

[0082] The demodulation section 120 receives the digital IF signal (DIF) converted by the tuner section 110 and performs a demodulation operation.

[0083] The demodulation section 120 can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal can be a signal in which a picture signal, a voice signal, or a data signal is multiplexed.

[0084] The stream signal output from the demodulation section 120 can be input to the signal processing device 170. The signal processing device 170 performs demultiplexing, picture / voice signal processing, etc., and then outputs a picture to the display 180 and a voice to the audio output section 185.

[0085] The external device interface section 130 can transceive data with an external device (not shown), for example, with the set-top box 50. To this end, the external device interface section 130 can include an A / V input / output section (not shown).

[0086] The external device interface section 130 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu-ray, a game machine, a camera, a camcorder, a computer (a notebook computer), a set-top box, etc. in a wired / wireless manner, and can perform an input / output operation with the external device.

[0087] The A / V input / output section can receive picture and voice signals of the external device. On the other hand, a wireless communication section (not shown) can perform close proximity wireless communication with other electronic devices.

[0088] Through such a wireless communication section (not shown), the external device interface section 130 can exchange data with a neighboring mobile terminal 600. In particular, the external device interface section 130 can receive device information, application information being executed, an application image, etc. from the mobile terminal 600 in a mirroring mode.

[0089] The network interface unit 135 provides an interface for connecting the image display device 100 to a wired / wireless network, including the Internet. For example, the network interface unit 135 can receive content or data provided by the Internet or a content provider or network operator via a network.

[0090] On the other hand, the network interface unit 135 may include a wireless communication unit (not shown).

[0091] The storage unit 140 can store programs for processing and controlling various signals within the signal processing device 170, and can also store processed image, voice, or data signals.

[0092] In addition, the storage unit 140 can also perform the function of temporarily storing image, voice, or data signals input from the external device interface unit 130. Furthermore, the storage unit 140 can also store information about a specified broadcast channel through channel storage functions such as channel mapping.

[0093] Although shown Figure 2 In embodiments where the storage unit 140 is separately disposed from the signal processing device 170, the scope of this disclosure is not limited thereto. The storage unit 140 may be included within the signal processing device 170.

[0094] The user input interface 150 transmits the user input signal to the signal processing device 170, or transmits the signal from the signal processing device 170 to the user.

[0095] For example, the remote control device 200 can receive and send user input signals such as power on / off, channel selection, and screen settings, or transmit user input signals input from local keys (not shown) such as power button, channel button, volume button, and setting button to the signal processing device 170, or transmit user input signals input from a sensor unit (not shown) that detects the user's gestures to the signal processing device 170, or send signals from the signal processing device 170 to the sensor unit (not shown).

[0096] The signal processing device 170 can demultiplex the stream input through the tuner unit 110, demodulation unit 120, network interface unit 135, or external device interface unit 130, or process the demultiplexed signal to generate and output a signal for image or voice output.

[0097] For example, the signal processing device 170 can receive broadcast signals or HDMI signals received by the image receiving unit 105, perform signal processing based on the received broadcast signals or HDMI signals, and output the processed image signal.

[0098] The image signal image-processed by the signal processing device 170 can be input to the display 180, thereby displaying an image corresponding to the image signal. Also, the image signal image-processed in the signal processing device 170 can be input to an external output device through the external device interface 130.

[0099] The voice signal processed in the signal processing device 170 can be output as sound through the audio output 185. Also, the voice signal processed in the signal processing device 170 can be input to an external output device through the external device interface 130.

[0100] Although Figure 2 not shown in FIG. 1, the signal processing device 170 can include a Demultiplexer, an image processing section, etc. That is, the signal processing device 170 can perform various signal processing and be implemented in the form of a System On Chip (SOC). In this regard, a detailed description thereof will be given later with reference to FIG. 2. Figure 3

[0101] In addition thereto, the signal processing device 170 can control the overall operation within the image display device 100. For example, the signal processing device 170 can control to select (Tune) an RF broadcast corresponding to a channel selected by a user or a channel stored in advance by controlling the tuner section 110.

[0102] Also, the signal processing device 170 can control the image display device 100 according to a user instruction input through the user input interface 150 or an internal program.

[0103] On the other hand, 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 video, and can be a 2D (two-dimensional) image or a 3D (three-dimensional) image.

[0104] On the other hand, the signal processing device 170 can cause a predetermined object to be displayed within an image displayed on the display 180. For example, the object can be at least one of a connected web page screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, a control, an icon, a still image, a video, and text.

[0105] On the other hand, the signal processing device 170 can recognize a position of a user based on an image photographed by a photographing section (not shown). For example, a distance (z-axis coordinate) between the user and the image display device 100 can be grasped. In addition, an x-axis coordinate and a y-axis coordinate within the display 180 corresponding to the position of the user can also be grasped.

[0106] ​The display 180 can convert an image signal, a data signal, an OSD (On Screen Display) signal, a control signal processed by the signal processing apparatus 170, or an image signal, a data signal, a control signal, etc. received from the external device interface 130, and generate a driving signal.

[0107] On the other hand, the display 180 can also be constituted by a touch screen, and thus can be used as an input device as well as an output device.

[0108] The audio output part 185 can receive a signal processed by the signal processing apparatus 170 in a voice, and output it as a voice.

[0109] The photographing part (not shown) photographs a user. The photographing part (not shown) can be implemented by one camera, but is not limited thereto, and can be implemented by a plurality of cameras. Image information photographed by the photographing part (not shown) can be input to the signal processing apparatus 170.

[0110] The signal processing apparatus 170 can sense a user's gesture based on an image photographed by the photographing part (not shown) or a signal sensed by the sensor part (not shown), or a combination thereof.

[0111] The power supply part 190 supplies a corresponding power source to the entire image display apparatus 100. In particular, the power supply part 190 can supply power to the signal processing apparatus 170 which can be implemented in the form of a System On Chip (SOC), the display 180 for image display, the audio output part 185 for audio output, etc.

[0112] In particular, the power supply part 190 can have a converter which converts an alternating voltage into a direct voltage, and a dc / dc converter which converts a level of the direct voltage.

[0113] The remote control apparatus 200 transmits a user input to the user input interface part 150. To this end, the remote control apparatus 200 can employ a Bluetooth, a Radio Frequency (RF) communication, an Infrared Ray (IR) communication, an Ultra Wideband (UWB), a ZigBee, etc. In addition, the remote control apparatus 200 can receive an image, a voice, or a data signal, etc. output from the user input interface part 150, and display or voice-output them on the remote control apparatus 200.

[0114] On the other hand, the above-described image display apparatus 100 can be a fixed or mobile digital broadcasting receiver capable of receiving digital broadcasting.

[0115] On the other hand, Figure 2The block diagram of the illustrated image display apparatus 100 is a block diagram for an embodiment of the present disclosure. Each constituent element in the block diagram can be integrated, added, or omitted according to the configuration of the actually implemented image display apparatus 100. That is, two or more constituent elements can be integrated into one constituent element, or one constituent element can be subdivided into two or more constituent elements, as necessary. In addition, the functions performed in each block are for explaining the embodiments of the present disclosure, and the specific actions or apparatuses do not limit the scope of the present disclosure.

[0116] Figure 3 is Figure 2 an example of an internal block diagram of a signal processing apparatus.

[0117] Referring to the drawings, a signal processing apparatus 170 of an embodiment of the present disclosure can include a demultiplexing section 310, an image processing section 320, a processor 330, an audio processing section 370. In addition, a data processing section (not illustrated) can also be included.

[0118] The demultiplexing section 310 demultiplexes the input stream. For example, in the case of inputting an MPEG-2 TS, the MPEG-2 TS can be divided into an image, a voice, and a data signal by demultiplexing the MPEG-2 TS. Here, the stream signal input to the demultiplexing section 310 can be a stream signal output from the tuner section 110 or the demodulation section 120 or the external device interface section 130.

[0119] The image processing section 320 can perform signal processing on the input image. For example, the image processing section 320 can perform image processing on the image signal demultiplexed by the demultiplexing section 310.

[0120] To this end, the image processing section 320 can include an image decoder 325, a scaler 335, a picture quality processing section 635, an image encoder (not illustrated), an OSD processing section 340, a frame rate conversion section 350, and a formatter 360, and the like.

[0121] The image decoder 325 decodes the demultiplexed image signal, and the scaler 335 performs scaling to enable output of the resolution of the decoded image signal from the display 180.

[0122] The image decoder 325 can have various specifications of decoders. For example, it can have an MPEG-2, an H.264 decoder, a 3D image decoder for a color image and a depth image, a decoder for a plurality of time point images, and the like.

[0123] The scaler 335 can scale the input image signal for which image decoding is completed by the image decoder 325 or the like.

[0124] For example, the scaler 335 can upsize in a case where the size or resolution of the input image signal is small, and can downsize in a case where the size or resolution of the input image signal is large.

[0125] The quality processing section 635 can perform quality processing on the input image signal on which image decoding is completed in the image decoder 325 or the like.

[0126] For example, the quality processing section 635 can perform noise removal processing of the input image signal, or can expand the gradation resolution of the input image signal, or can perform image resolution improvement, or can perform signal processing based on high dynamic range (HDR), or can change the frame rate, or can perform quality processing corresponding to the panel characteristics, particularly, organic light emitting panel, or the like.

[0127] The OSD processing section 340 generates an OSD signal according to a user input or itself. For example, a signal for displaying various information in a graphic (Graphic) or text (Text) on a screen of the display 180 can be generated based on a user input signal. The generated OSD signal can include various data such as a user interface screen of the image display apparatus 100, various menu screens, a control, an icon, and the like. In addition, the generated OSD signal can include a 2D object or a 3D object.

[0128] In addition, the OSD processing section 340 can generate a pointer which can be displayed on the display based on a pointing signal input from the remote control apparatus 200. In particular, such a pointer can be generated by a pointing signal processing section, and the OSD processing section 240 can include such a pointing signal processing section (not shown). Of course, the pointing signal processing section (not shown) can be separately provided without being provided in the OSD processing section 240.

[0129] The frame rate converter (FRC) 350 can convert the frame rate of the input image. On the other hand, the frame rate converter 350 can be directly output without additionally performing frame rate conversion.

[0130] On the other hand, the formatter 360 can convert the format of the input image signal into an image signal for display on the display and output.

[0131] In particular, the formatter 360 can change the format of the image signal to correspond to the display panel.

[0132] On the other hand, the formatter 360 can also change the format of the image signal. For example, the format of the 3D image signal can be changed to any one of various 3D formats such as a side by side format, a top / down format, a frame sequential format, an interlaced format, a checker box format, etc.

[0133] The processor 330 can control the overall operation within the image display apparatus 100 or the signal processing apparatus 170.

[0134] For example, the processor 330 can control to select (Tuning) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel by controlling the tuner 110.

[0135] In addition, the processor 330 can control the image display apparatus 100 according to a user instruction input through the user input interface 150 or an internal program.

[0136] In addition, the processor 330 can perform data transmission control with the network interface 135 or the external device interface 130.

[0137] Alternatively, the processor 330 can control the operation of the demultiplexer 310, the image processing section 320, etc. within the signal processing apparatus 170.

[0138] On the other hand, the audio processing section 370 within the signal processing apparatus 170 can perform voice processing of the demultiplexed voice signal. To this end, the audio processing section 370 can have various decoders.

[0139] In addition, the audio processing section 370 within the signal processing apparatus 170 can process bass, treble, volume adjustment, etc.

[0140] The data processing section (not shown) within the signal processing apparatus 170 can perform data processing of the demultiplexed data signal. For example, in the case where 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 a start time, an end time, etc. of a broadcast program broadcast in each channel.

[0141] On the other hand, Figure 3 The block diagram of the signal processing apparatus 170 shown is a block diagram for explaining an embodiment of the present disclosure. Each constituent element of the block diagram can be integrated, added, or omitted according to the configuration of the actually implemented signal processing apparatus 170.

[0142] In particular, the frame rate conversion section 350 and the formatter 360 can also be provided separately with respect to the image processing section 320.

[0143] Figure 4a is a diagram illustrating Figure 2 a control method of the remote control device.

[0144] As Figure 4a shown in (a) thereof, an example is illustrated in which a pointer 205 corresponding to the remote control device 200 is displayed on the display 180.

[0145] The user can move or rotate the remote control device 200 up and down, left and right (as shown in (b) of Figure 4a ), forward and backward (as shown in (c) of Figure 4a ). The pointer 205 displayed on the display 180 of the image display device corresponds to the movement of the remote control device 200. As shown, since the corresponding pointer 205 of such a remote control device 200 moves and is displayed in accordance with the movement on the 3D space, it can be called a spatial remote controller or a 3D pointer device.

[0146] Figure 4a (b) of illustrates that if 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 in correspondence therewith.

[0147] Information related to the movement of the remote control device 200 sensed by 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 related to the movement of the remote control device 200. The image display device can display the pointer 205 in correspondence with the calculated coordinates.

[0148] Figure 4a (c) of illustrates a case in which the user moves the remote control device 200 away from the display 180 in a state in which a specific button within the remote control device 200 is pressed. Thereby, a selection area within the display 180 corresponding to the pointer 205 can be zoomed in and displayed in an enlarged manner. Conversely, in a case in which the user moves the remote control device 200 to approach the display 180, the selection area within the display 180 corresponding to the pointer 205 can be zoomed out and displayed in a reduced manner. On the other hand, it is also possible that in a case in which the remote control device 200 is moved away from the display 180, the selection area is zoomed out, and in a case in which the remote control device 200 is moved to approach the display 180, the selection area is zoomed in.

[0149] On the other hand, in a state where a specific button in the remote control device 200 is pressed, recognition of the up-down and left-right movements can be excluded. That is, in a case where the remote control device 200 is moved in a manner of approaching or moving away from the display 180, the up, down, left, and right movements can not be recognized, and only the front and back movements can be recognized. In a state where the specific button in the remote control device 200 is not pressed, as the remote control device 200 is moved up, down, left, and right, only the pointer 205 is moved.

[0150] On the other hand, the moving speed or moving direction of the pointer 205 can correspond to the moving speed or moving direction of the remote control device 200.

[0151] Figure 4b is Figure 2 an internal block diagram of the remote control device.

[0152] Referring to the drawings, the remote control device 200 can include a wireless communication part 425, a user input part 435, a sensor part 440, an output part 450, a power supply part 460, a storage part 470, and a control part 480.

[0153] The wireless communication part 425 transceives signals with any one of the image display devices of the foregoing embodiments of the present disclosure. In the image display devices of the embodiments of the present disclosure, one image display device 100 is described as an example.

[0154] In the present embodiment, the remote control device 200 can have an RF module 421 that can transceive signals with the image display device 100 according to an RF communication standard. In addition, the remote control device 200 can have an IR module 423 that can transceive signals with the image display device 100 according to an IR communication standard.

[0155] In the present embodiment, the remote control device 200 transmits a signal including information related to movement of the remote control device 200 or the like to the image display device 100 through the RF module 421.

[0156] In addition, the remote control device 200 can receive a signal transmitted by the image display device 100 through the RF module 421. In addition, the remote control device 200 can transmit a command related to power on / off, channel change, volume change, or the like to the image display device 100 through the IR module 423 as needed.

[0157] The user input section 435 can be configured by a keyboard, a key, a touchpad, or a touch screen, etc. A user can operate the user input section 435 to input an instruction related to the image display apparatus 100 to the remote control apparatus 200. In a case where the user input section 435 has a hard key button, the user can input an instruction related to the image display apparatus 100 to the remote control apparatus 200 through a pressing action of the hard key button. In a case where the user input section 435 has a touch screen, the user can input an instruction related to the image display apparatus 100 to the remote control apparatus 200 by touching a soft key of the touch screen. In addition, the user input section 435 can have various types of input means which a user can operate, such as a scroll key, a jog key, etc., and the present embodiment does not limit the scope of the present disclosure.

[0158] The sensor section 440 can have a gyro sensor 441 or an acceleration sensor 443. The gyro sensor 441 can detect information related to a movement of the remote control apparatus 200.

[0159] As an example, the gyro sensor 441 can detect information related to a motion of the remote control apparatus 200 with x, y, z axes as a reference. The acceleration sensor 443 can detect information related to a moving speed of the remote control apparatus 200, etc. On the other hand, there can be a distance measurement sensor, and thus a distance between the display 180 can be detected.

[0160] The output section 450 can output an image or a voice signal corresponding to an operation of the user input section 435 or a signal transmitted from the image display apparatus 100. Through the output section 450, a user can recognize whether an operation of the user input section 435 is performed or not or whether a control of the image display apparatus 100 is performed or not.

[0161] As an example, the output section 450 can include an LED module 451 which is lighted when the user input section 435 is operated or transmits / receives a signal to / from the image display apparatus 100 through the wireless communication section 425, a vibration module 453 which generates vibration, a sound output module 455 which outputs sound, or a display module 457 which outputs an image.

[0162] The power supply section 460 supplies power to the remote control apparatus 200. In a case where the remote control apparatus 200 is not moved for a predetermined time period, the power supply section 460 can interrupt power supply, thereby reducing power waste. In a case where a predetermined key provided to the remote control apparatus 200 is operated, the power supply section 460 can resume power supply.

[0163] The storage 470 can store various types of programs, application data, etc. required for the control or action of the remote control device 200. If the remote control device 200 wirelessly transmits and receives signals with the image display device 100 through the RF module 421, the remote control device 200 and the image display device 100 transmit and receive signals through a prescribed frequency band. The control unit 480 of the remote control device 200 can store information related to the frequency band, etc. in which the image display device 100 that can be paired with the remote control device 200 wirelessly transmits and receives signals to the storage 470 and refer to the same.

[0164] The control unit 480 controls the overall matters related to the control of the remote control device 200. The control unit 480 can transmit a signal corresponding to a prescribed key operation of the user input unit 435 or a signal corresponding to the movement of the remote control device 200 detected by the sensor unit 440 to the image display device 100 through the wireless communication unit 425.

[0165] The user input interface unit 150 of the image display device 100 can 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 action of the remote control device 200.

[0166] The user input interface unit 150 can wirelessly transmit and receive signals with the remote control device 200 through the RF module 412. In addition, through the IR module 413, a signal transmitted by the remote control device 200 according to an IR communication standard can be received.

[0167] The coordinate value calculation unit 415 corrects hand shake or error from a signal corresponding to the action of the remote control device 200 received through the wireless communication unit 151, thereby being capable of calculating the coordinate values x, y of the pointer 202 to be displayed on the display 170.

[0168] The transmission signal of the remote control device 200 input to the image display device 100 through the user input interface unit 150 is transmitted to the signal processing device 180 of the image display device 100. The signal processing device 180 discriminates information related to the action and key operation of the remote control device 200 from the signal transmitted by the remote control device 200 and can control the image display device 100 accordingly.

[0169] As still another example, the remote control device 200 can calculate the pointer coordinate values corresponding to its action and output 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 related to the received pointer coordinate values to the signal processing device 180 without an additional process of correcting hand shake or error.

[0170] Further, as another example, the coordinate value calculation section 415 can also be provided inside the signal processing device 170, instead of the user input interface section 150, differently from the drawing.

[0171] Figure 5 is Figure 2 an example of an internal block diagram of the display.

[0172] Referring to the drawing, the display 180b based on the organic light emitting panel can include an organic light emitting panel 210b, a first interface section 230b, a second interface section 231b, a timing controller 232b, a gate driving section 234b, a data driving section 236b, a memory 240b, a processor 270b, a power supply section 290b, a current detection section 510b, and the like.

[0173] The display 180b can receive an image signal Vdb, a first direct current voltage V1b, and a second direct current voltage V2b, and display a prescribed image based on the image signal Vdb.

[0174] On the other hand, the first interface section 230b inside the display 180b can receive the image signal Vdb and the first direct current voltage V1b from the signal processing device 170b.

[0175] Here, the first direct current voltage V1b can be used for the operation of the power supply section 290b and the timing controller 232b inside the display 180b.

[0176] Next, the second interface section 231b can receive the second direct current voltage V2b from the external power supply section 190b. On the other hand, the second direct current voltage V2b can be input to the data driving section 236b inside the display 180b.

[0177] The timing controller 232b can output a data driving signal Sdab and a gate driving signal Sgab based on the image signal Vdb.

[0178] For example, in a case where the image signal Vdb input by the first interface section 230b is converted and the converted image signal va1b is output, the timing controller 232b can output the data driving signal Sdab and the gate driving signal Sgab based on the converted image signal va1b.

[0179] The timing controller 232b can receive a control signal, a vertical synchronization signal Vsyncb, and the like, in addition to the video signal Vdb from the signal processing device 170b.

[0180] Further, the timing controller 232b can output a gate drive signal Sgab for the operation of the gate drive section 234b, a data drive signal Sdab for the operation of the data drive section 236b, based on a control signal, a vertical synchronization signal Vsyncb, and the like, in addition to the video signal Vdb.

[0181] In a case where the panel 210b has RGBW subpixels, the data drive signal Sdab at this time can be an RGBW subpixel drive data drive signal.

[0182] On the other hand, the timing controller 232b can also output a control signal Csb to the gate drive section 234b.

[0183] The gate drive section 234b and the data drive section 236b can supply a scan signal and an image signal to the organic light emitting panel 210b through a gate line GLb and a data line DLb, respectively, in accordance with the gate drive signal Sgab and the data drive signal Sdab from the timing controller 232b. Thereby, the organic light emitting panel 210b displays a prescribed image.

[0184] On the other hand, the organic light emitting panel 210b can include an organic light emitting layer, and a plurality of gate lines GLb and data lines DLb can be arranged in a matrix form in each pixel corresponding to the organic light emitting layer in order to display an image.

[0185] On the other hand, the data drive section 236b can output a data signal to the organic light emitting panel 210b based on a second direct current voltage V2b from the second interface section 231b.

[0186] The power supply section 290b can supply various power sources to the gate drive section 234b, the data drive section 236b, the timing controller 232b, and the like.

[0187] The current detection section 510b can detect a current flowing in a subpixel of the organic light emitting panel 210b. The detected current can be input to the processor 270b and the like to calculate a cumulative current.

[0188] The processor 270b can perform various controls within the display 180b. For example, the gate drive section 234b, the data drive section 236b, the timing controller 232b, and the like can be controlled.

[0189] On the other hand, the processor 270b can receive current information flowing in a subpixel of the organic light emitting panel 210b from the current detection section 510b.

[0190] Figures 6a to 6b is a diagram referred to when explaining Figure 5 an organic light emitting panel.

[0191] First, Figure 6a is a diagram showing a pixel (Pixel) within the organic light emitting panel 210b.

[0192] Referring to the drawings, the organic light emitting panel 210b can include a plurality of scan lines Scan 1~Scan n and a plurality of data lines R1, G1, B1, W1~Rm, Gm, Bm, Wm crossing the same.

[0193] On the other hand, a pixel (subpixel) is defined in a crossing area of the scan lines and the data lines within the organic light emitting panel 210b. In the diagram, a pixel (Pixel) having RGBW subpixels SR1, SG1, SB1, SW1 is shown.

[0194] Figure 6b The circuit of any one of the subpixels (sub pixel) within the pixel (Pixel) of the organic light emitting panel is exemplified. Figure 6a

[0195] Referring to the drawings, the organic light emitting subpixel (sub pixel) circuit CRTm, as an active type, can include a scan switching element SW1, a storage capacitor Cst, a driving switching element SW2, an organic light emitting layer OLED.

[0196] A gate terminal of the scan switching element SW1 is connected with a scan line and is turned on according to an input scan signal Vdscan. In the case of being turned on, an input data signal Vdata is transferred to a gate terminal of the driving switching element SW2 or one end of the storage capacitor Cst.

[0197] The storage capacitor Cst is formed between the gate terminal and a source terminal of the driving switching element SW2 and stores a prescribed difference between a data signal level transferred to one end of the storage capacitor Cst and a direct current voltage Vdd level transferred to the other end of the storage capacitor Cst.

[0198] For example, in the case where the data signal has mutually different levels according to a PAM (Pluse Amplitude Modulation) method, the power source level stored in the storage capacitor Cst is changed according to a level difference of the data signal Vdata.

[0199] As another example, in the case where the data signal has mutually different pulse widths according to a PWM (Pluse Width Modulation) method, the power source level stored in the storage capacitor Cst is changed according to a pulse width difference of the data signal Vdata.

[0200] ​The drive switching element SW2 is turned on in accordance with the power supply level stored in the storage capacitor Cst. In the case where the drive switching element SW2 is turned on, a drive current IOLED proportional to the stored power supply level flows in the organic light emitting layer OLED. Thus, the organic light emitting layer OLED performs a light emitting operation.

[0201] The organic light emitting layer OLED includes light emitting layers EML corresponding to RGBW of the sub-pixels, and can include at least one of a hole injection layer HIL, a hole transport layer HTL, an electron transport layer ETL, an electron injection layer EIL, and can further include a hole blocking layer, etc.

[0202] On the other hand, the sub-pixels (sub pixels) all output white light in the organic light emitting layer OLED, but in the case of green, red, and blue sub-pixels, in order to realize color, an additional color filter is provided. That is, in the case of green, red, and blue sub-pixels, green, red, and blue color filters are also provided, respectively. On the other hand, in the case of the white sub-pixel, since white light is output, an additional color filter is not required.

[0203] On the other hand, in the figure, the case where the scanning switching element SW1 and the drive switching element SW2 are p-type MOSFETs is illustrated, but n-type MOSFETs can also be used, and in addition, JFETs, IGBTs, or SICs, etc. can also be used.

[0204] On the other hand, the pixel (Pixel) is a hold type element in which a scanning signal is applied during a unit display period, specifically a unit frame period, and then the organic light emitting layer OLED continues to emit light.

[0205] Figure 7 is an example of an internal block diagram of an image display apparatus of an embodiment of the present disclosure.

[0206] Referring to the drawings, an image display apparatus 100 of an embodiment of the present disclosure includes a display 180, a signal processing apparatus 170 outputting an image signal to the display 180, and a power supply part 190 supplying a display driving voltage to the display 180.

[0207] The power supply part 190 of an embodiment of the present disclosure can include a relay element RL switching an input alternating voltage Va, a converter 925 connected in parallel to one end n2 which is an input terminal of the relay element RL, a second converter 905 connected to the other end n4 which is an output terminal of the relay element RL, converting the input alternating voltage Va from the relay element RL into a direct current voltage, and a third converter 910 converting a level of the direct current voltage from the second converter 905.

[0208] The converter 925 and the second converter 905 can be AC / DC converters that convert an input AC voltage Va into a DC voltage, respectively.

[0209] The third converter 910 can convert a level of the DC voltage from the second converter 905 and output a display driving voltage Vdd to the display 180 or an operation voltage Vop or a standby voltage Vst to the signal processing device 170.

[0210] To this end, the third converter 910 can have an LLC converter of multiple levels.

[0211] For example, the third converter 910 can have a first LLC converter 912 that outputs a display driving voltage Vdd of approximately 24 V and a second LLC converter 915 that outputs an operation voltage Vop of approximately 12 V or a standby voltage Vst of approximately 8 V to the signal processing device 170.

[0212] At this time, the first LLC converter 912 and the second LLC converter 915 can be connected in parallel.

[0213] In the drawing, a case where the first LLC converter 912 is configured between an n3 node and an n1 node and the second LLC converter 915 is configured between the n3 node and an n5 node is illustrated.

[0214] In addition, in the drawing, a case where the converter 925 is configured between an n2 node and an n6 node and the second converter 905 is configured between an n4 node and the n3 node is illustrated.

[0215] On the other hand, the n1, which is an output node of the second converter 905, can be electrically connected with the display 180.

[0216] The second converter 905 can have a diode or a switching element to convert an input AC voltage Va into a DC voltage and output the same.

[0217] The third converter 910 can convert a level of an input DC voltage and output a display driving voltage Vdd.

[0218] For example, the third converter 910 can output a display driving voltage Vdd by boosting a DC voltage.

[0219] On the other hand, in a case where the display 180 is an organic light emitting panel, the display driving voltage Vdd can be a pixel driving voltage of an organic light emitting pixel.

[0220] On the other hand, in a case where the display 180 is an inorganic light emitting panel, the display driving voltage Vdd can be a pixel driving voltage of an inorganic light emitting pixel.

[0221] On the other hand, in a case where the display 180 is a liquid crystal panel, the display driving voltage Vdd can be a backlight driving voltage or a liquid crystal pixel driving voltage.

[0222] On the other hand, the image display apparatus 100 according to an embodiment of the present disclosure further includes a main board 900 including the signal processing apparatus 170 and the microcomputer 173.

[0223] On the other hand, the main board 900 or the signal processing apparatus 170 can output a switch driving control signal SSwd to the converter 925. Thereby, the converter 925 can be stably driven.

[0224] On the other hand, the main board 900 or the signal processing apparatus 170 can output a switch driving control signal SSwa to the second converter 905. Thereby, the second converter 905 can be stably driven.

[0225] On the other hand, the main board 900 or the signal processing apparatus 170 can output a switch driving control signal SSwb to the first LLC converter 912 within the third converter 910. Thereby, the first LLC converter 912 within the third converter 910 can be stably driven.

[0226] On the other hand, the main board 900 or the signal processing apparatus 170 can output a switch driving control signal SSwc to the second LLC converter 915 within the third converter 910. Thereby, the second LLC converter 915 within the third converter 910 can be stably driven.

[0227] On the other hand, the power supply part 190 can further include a signal transfer part FDK connected between the third converter 910 and the main board 900.

[0228] The signal transfer part FDK can receive the display on signal Spo or the display off signal Spf from the main board 900 including the signal processing apparatus 170 or the signal processing apparatus 170, and transfer the display on signal Spo or the display off signal Spf to the third converter 910.

[0229] Figure 8 is Figure 7 An example of a circuit diagram of the second converter.

[0230] Referring to the drawings, Figure 7 The second converter 905 can have a plurality of switching elements Sa, Sb and a plurality of diode elements Da, Db in order to efficiently supply a large power supply, and convert a level of an input alternating voltage Vac based on a switching operation of the switching elements Sa, Sb, and output a direct current voltage Vdc.

[0231] Specifically, the second converter 905 can include a first leg lega having a first diode element Da and a first switch element Sa connected in series with each other, and a second leg legb connected in parallel with the first leg lega, having a second diode element Db and a second switch element Sb connected in series with each other.

[0232] One end (cathode) of the first diode element Da can be connected to one end na of the output na-nb of the second converter 905, and the other end (anode) of the first diode element Da can be connected to the first node nc.

[0233] One end of the first switch element Sa can be connected to the first node nc, and the other end of the first switch element Sa can be connected to the other end nb of the output na-nb of the second converter 905.

[0234] One end (cathode) of the second diode element Db can be connected to one end na of the output na-nb of the second converter 905, and the other end (anode) of the second diode element Db can be connected to the second node nd.

[0235] One end of the second switch element Sb can be connected to the second node nd, and the other end of the second switch element Sb can be connected to the other end nb of the output na-nb of the second converter 905.

[0236] On the other hand, the second converter 905 of Figure 8 may be named as a half-bridge AC / DC converter.

[0237] On the other hand, the second converter 905 can further include an inductor L configured between the first node na between the first diode element Da and the first switch element Sa and an input end to which an input AC voltage Vac is input.

[0238] On the other hand, a third converter 910 connected to both ends of a dc terminal capacitor Ca can be connected to the output nc-nd of the second converter 905.

[0239] Figure 9 is Figure 7 a circuit diagram of the third converter.

[0240] Referring to the drawings, the third converter 910 can be a multi-level LLC converter.

[0241] Figure 9 The third converter 910 of Figure 7 may be a first LLC converter 912 or a second LLC converter 915.

[0242] The third converter 910 can include the transformer 805, first and second switching elements SW1 and SW2 configured at an input of the transformer 805 and connected in series with each other, and a resonance capacitor Cr and a resonance inductor Lr each connected between the input of the transformer 805 and the second switching element SW2. Thereby, the display driving voltage Vdd or the operation voltage Vop of the signal processing device 170 or the standby voltage Vst can be output based on resonance.

[0243] On the other hand, the third converter 910 can further include a plurality of full-bridge diode elements D1 to D4 configured at an output of the transformer 805, and a capacitor element Cd configured across both ends nda-ndb of the output of the plurality of full-bridge diode elements D1 to D4. Thereby, the display driving voltage Vdd can be stably output based on resonance.

[0244] On the other hand, it is preferable that no resistance element be configured across both ends nda-ndb of the capacitor element Cd.

[0245] Since no resistance element is configured across both ends nda-ndb of the capacitor element Cd, unnecessary power consumption caused by the resistance element can be reduced. Thereby, power consumption of the power supply unit 190 can be reduced.

[0246] On the other hand, the third converter 910 can further include a voltage detection circuit 935 that detects a voltage across the second switching element SW2.

[0247] On the other hand, the third converter 910 can turn on the second switching element SW2 in a case where the voltage across the second switching element SW2 detected by the voltage detection circuit 935 is zero voltage. Thereby, noise can be reduced by performing zero voltage switching of the second switching element SW2.

[0248] On the other hand, the voltage detection circuit 935 can include a capacitor Ct connected to a node nm between the first and second switching elements SW1 and SW2, a zener diode Dt configured between the capacitor Ct and a ground terminal, and a resistance element Rt having one end connected to a node nb between the capacitor Ct and the zener diode Dt. Thereby, the voltage across the second switching element SW2 can be stably detected.

[0249] On the other hand, the third converter 910 can further include a switching control unit 925 that controls the first and second switching elements SW1 and SW2.

[0250] On the other hand, the switching control unit 925 can control zero voltage switching of the second switching element SW2 based on the voltage of the nb node. Thereby, noise can be reduced by performing zero voltage switching of the second switching element SW2.

[0251] Figure 10 is Figure 7 an example of a circuit diagram of a converter.

[0252] Referring to the drawings, the converter 925 can include a flyback converter.

[0253] That is, the converter 925 can have a transformer Ts, a switching element sm connected to a node nt of an input side of the transformer Ts, and a diode element Dm connected to a node n6 of an output side of the transformer Ts.

[0254] Thereby, an input alternating current voltage Va from a node n2 can be converted to a direct current voltage based on switching of the switching element sm and output through both ends of a node n6-n7.

[0255] Figure 11 is an example of an internal block diagram of an image display apparatus related to the present disclosure.

[0256] Referring to the drawings, the image display apparatus 100x related to the present disclosure includes a signal processing apparatus 170 outputting an image signal to a display 180, a relay element RL switching an input alternating current voltage Va, a converter 925 connected to an input terminal of the relay element RL, converting the input alternating current voltage Va to a direct current voltage, a microcomputer 173 operating based on the direct current voltage from the converter 925, a second converter 905 connected to an output terminal of the relay element RL, converting the input alternating current voltage Va to a direct current voltage, and a third converter 910 converting a level of the direct current voltage from the second converter 905.

[0257] Figures 12a to 12e is a drawing referred to when explaining Figure 11

[0258] Figure 12a is a drawing for explaining an operation of the image display apparatus 100x related to the present disclosure in a low power standby mode, i.e., a first standby mode.

[0259] Referring to the drawings, in the first standby mode, in a case where the relay element RL is off and the converter 925 operates, a voltage Vzw of a first level of approximately 3.3 V can be supplied to the microcomputer 173 based on a current path of PTHax.

[0260] On the other hand, since the input side and the output side of the transformer Ts are insulated in a case where the converter 925 is a flyback converter, the converter 925 hardly consumes power.

[0261] Therefore, the first standby mode can be named a zero watt standby mode. ​

[0262] Figure 12b is a diagram for explaining an action of the image display apparatus 100x related to the present disclosure in a normal standby mode, i.e., in the second standby mode.

[0263] Referring to the drawings, in the second standby mode, in a case where the relay element RL is on, and the second converter 905 and the third converter 910 act, a voltage Voax of a second level of approximately 8 V can be supplied to the signal processing apparatus 170 based on a current path according to the PTHbx.

[0264] For the second standby mode, the third converter 910 can output a voltage Voax of a second level of approximately 8 V to the signal processing apparatus 170 as a standby mode voltage.

[0265] On the other hand, in the second standby mode, since the current path according to the PTHbx passes through the relay element RL, the second converter 905, and the third converter 910, power consumption is higher than in the first standby mode.

[0266] In particular, there is a problem that power consumption when the relay element RL is on exceeds an allowable reference value at the time of standby mode.

[0267] Figure 12c is a diagram for explaining an action of the image display apparatus 100x related to the present disclosure in a normal standby mode, i.e., in the second standby mode.

[0268] Referring to the drawings, in the second standby mode, in a case where the relay element RL is on, and the second converter 905 and the third converter 910 act, a voltage Voax of a second level of approximately 8 V can be supplied to the signal processing apparatus 170 based on a current path according to the PTHbx.

[0269] On the other hand, in the second standby mode, since the current path according to the PTHbx passes through the relay element RL, the second converter 905, and the third converter 910, power consumption is higher than in the first standby mode. Figure 12b

[0270] On the other hand, in the second standby mode, since the current path according to the PTHbx passes through the relay element RL, the second converter 905, and the third converter 910, power consumption is higher than in the first standby mode.

[0271] Figure 12d is a diagram for explaining an action of the image display apparatus 100x related to the present disclosure in a normal standby mode, i.e., in the second standby mode. Figure 11

[0272] ​​Referring to the drawings, the third converter 910 does not act in the first standby mode, and outputs a voltage Voax of a second level of approximately 8 V during the second standby mode, i.e., from Txa to Txb, and starts to output a voltage Vobx of a third level of approximately 12 V from the active mode, i.e., after Txb.

[0273] Figure 12e is a diagram for explaining the actions of the converter 920 and the third converter 910 in the first standby mode, the second standby mode, and the active mode.

[0274] Referring to the drawings, in the first standby mode, the relay RL is turned off, the converter 920 acts, the second converter 905 is turned off, and the third converter 910 is turned off.

[0275] On the other hand, in the second standby mode and the active mode, the relay RL is turned on, the converter 920 acts, the second converter 905 acts, and the third converter 910 acts.

[0276] On the other hand, in the second standby mode and the active mode, the third converter 910 outputs voltages of different levels from each other.

[0277] Referring to Figures 11 to 12e The image display device 100x related to the present disclosure has a problem that, although the power consumption in the first standby mode is below the allowable reference value at the time of the standby mode, the power consumption in the second standby mode exceeds the allowable reference value at the time of the standby mode.

[0278] Therefore, the present disclosure proposes a scheme in which the power consumption in the first standby mode and the second standby mode becomes below the allowable reference value at the time of the standby mode. For this, the drawings below will be described with reference to Figure 13 and Figure 13 The drawings below will be described.

[0279] Figure 13 is an example of an internal block diagram of the image display device of an embodiment of the present disclosure.

[0280] Referring to the drawings, the image display device 100 of an embodiment of the present disclosure includes a display 180, a signal processing device 170 that outputs an image signal to the display 180, a relay element RL that switches an input alternating voltage Va, a converter 925 that is connected in parallel to one end n2 of the relay element RL, a microcomputer 173 that acts based on a direct current voltage from the converter 925, and a switch ST that is disposed between the converter 925 and the signal processing device 170 and that acts based on a control signal output from the microcomputer 173.

[0281] In the drawings, a case in which the converter 925 is disposed between the input end of the relay element RL and a node n6 is exemplified.

[0282] On the other hand, a case where a switch ST is provided between the n6 node that is the output end of the converter 925 and the ns node that is a part of the input end of the signal processing device 170 is illustrated in the drawing.

[0283] On the other hand, in the image display device 100 of the embodiment of the present disclosure, in the first standby mode, based on the off of the relay element RL, the off of the switch ST, and the operation of the converter 925, the voltage Vzw of the first level is supplied to the microcomputer 173, and in the second standby mode, based on the off of the relay element RL, the operation of the switch ST, and the operation of the converter 925, the voltage Vst of the second level that is higher than the first level is supplied to the signal processing device 170. Thereby, the power consumption in the standby mode can be reduced. In particular, the power consumption can be reduced in the plurality of standby modes, respectively.

[0284] On the other hand, the microcomputer 173 can output a control signal Sr for the operation of the relay RL based on the direct current voltage from the converter 925.

[0285] On the other hand, the image display device 100 of the embodiment of the present disclosure can further include a second converter 905 connected to the other end n4 of the relay element RL, which converts the input alternating current voltage Va from the relay element RL into a direct current voltage, and a third converter 910 that converts the level of the direct current voltage from the second converter 905.

[0286] On the other hand, the converter 925 can output the voltage Vzw of the first level in the first standby mode and the voltage Vst of the second level that is higher than the first level in the second standby mode. Thereby, the power consumption in the first standby mode and the second standby mode can be reduced.

[0287] Figures 14a to 16d is a drawing for explaining Figure 13 the figures referred to in the description.

[0288] Figure 14a is a drawing for explaining the operation of the image display device 100 of the embodiment of the present disclosure in the low power consumption standby mode, i.e., the first standby mode.

[0289] Referring to the drawing, in the first standby mode, in the case where the relay element RL is off, the switch ST is off, and the converter 925 is operated, the voltage Vzw of the first level of approximately 3.3 V can be supplied to the microcomputer 173 based on the current path of the PTHa.

[0290] That is, in the first standby mode, the voltage Vzw of the first level of approximately 3.3 V can be supplied to the microcomputer 173 according to the current path of the PTHa via the converter 925.

[0291] To this end, in the first standby mode, the converter 925 can output a voltage Vzw of a first level of approximately 3.3 V.

[0292] On the other hand, in the case where the converter 925 is a flyback converter, since the input side and the output side of the transformer Ts are insulated, the power consumption of the converter 925 is almost nothing.

[0293] Therefore, the first standby mode can be named a zero watt standby mode.

[0294] On the other hand, in the first standby mode, a voltage Vst of a second level is not supplied to the signal processing device 170. Thereby, it is possible to reduce the power consumption in the first standby mode.

[0295] On the other hand, the power consumption in the first standby mode can be less than the power consumption in the second standby mode.

[0296] Figure 14b is a diagram for explaining the action of the image display device 100 of the embodiment of the present disclosure in the normal standby mode, i.e., the second standby mode.

[0297] Referring to the drawings, in the second standby mode, in the case where the relay element RL is turned off, the switch ST is turned on, and the converter 925 is in action, a voltage Vst of a second level of approximately 8 V can be supplied to the signal processing device 170 based on the current path of the PTHb.

[0298] That is, in the second standby mode, a voltage Vst of a second level of approximately 8 V can be supplied to the signal processing device 170 according to the current path of the PTHb via the converter 925 and the switch ST.

[0299] To this end, in the second standby mode, the converter 925 can output a voltage Vst of a second level of approximately 8 V.

[0300] On the other hand, unlike Figure 12b since the relay element RL is turned off in the second standby mode, the power consumption is significantly reduced.

[0301] Especially, since it is only via the converter 925 and the switch ST, although the power consumption in the second standby mode is higher than the power consumption in the first standby mode, it is possible to stably maintain below the allowable reference value in the standby mode.

[0302] Figure 14c is a diagram for explaining the action of the image display device 100 of the embodiment of the present disclosure in the action mode.

[0303] Referring to the drawings, in the action mode, in a case where the relay element RL is turned on and the second converter 905 and the third converter 910 are in action, a voltage Vop of a third level of approximately 12 V is supplied to the signal processing device 170 based on the current path of the PTHc.

[0304] On the other hand, the third converter 910 can supply a voltage Vop of a third level higher than the second level to the signal processing device 170 based on the turning on of the relay element RL, the action of the second converter 905, and the action of the third converter 910 in the action mode after the first standby mode or the second standby mode. Thereby, the action voltage Vop can be stably supplied to the signal processing device 170 by the third converter 910.

[0305] On the other hand, in the action mode, since the current path according to the PTHc is via the relay element RL, the second converter 905, and the third converter 910, the power consumption is higher than the first standby mode and the second standby mode.

[0306] Figure 15a is a diagram for explaining the action of the converter 925 of FIG. 12.

[0307] Referring to the drawings, the converter 925 can output a voltage Vzw of a first level of approximately 3.3 V during the first standby mode, i.e., from Tm1 to Tm2, and output a voltage Vst of a second level of approximately 8 V during the second standby mode, i.e., from Tm2 onward.

[0308] Figure 15b is a diagram for explaining the action of the third converter 910 in the action mode.

[0309] Referring to the drawings, the third converter 910 does not act during the first standby mode and the second standby mode.

[0310] On the other hand, the third converter 910 can output a voltage Vop of a third level of approximately 12 V during the action mode after the first standby mode or the second standby mode, i.e., from Tm3 onward.

[0311] Figure 16a is a flowchart showing a method of action of the image display device in the first standby mode.

[0312] Referring to the drawings, in the first standby mode, the converter 925 within the image display device 100 is turned on (S1510), the relay element RL is turned off (S1520), and the switch ST is turned off (S1530).

[0313] In the first standby mode, the converter 925 can output a voltage Vzw of a first level of approximately 3.3 V, whereby the voltage Vzw of the first level of approximately 3.3 V can be supplied to the microcomputer 173.

[0314] Figure 16b is a flowchart showing a method of operation of the image display apparatus in the second standby mode.

[0315] Referring to the drawings, in the second standby mode, the converter 925 within the image display apparatus 100 is turned on (S1512), the relay element RL is turned off (S1522), and the switch ST is turned on (S1532).

[0316] In the second standby mode, the converter 925 can output a voltage Vst of a second level of approximately 8 V, whereby the voltage Vst of the second level of approximately 8 V can be supplied to the signal processing apparatus 170.

[0317] Figure 16c is a flowchart showing a method of operation of the image display apparatus when transitioning from the first standby mode to the second standby mode.

[0318] Referring to the drawings, in the first standby mode, the converter 925 within the image display apparatus 100 is turned on (S1540), and in the first standby mode, the converter 925 outputs a voltage Vzw of a first level of approximately 3.3 V.

[0319] On the other hand, with the transition to the second standby mode, the converter 925 within the image display apparatus 100 outputs a voltage Vst of a second level of approximately 8 V (S1543), and enters the second standby mode (S1544).

[0320] Finally, when transitioning from the first standby mode to the second standby mode, the switch ST is turned on, whereby the voltage Vst of the second level higher than the first level can be supplied to the signal processing apparatus 170. Thereby, it is possible to reduce the power consumption in the standby mode.

[0321] Figure 16d is a flowchart showing a method of operation of the image display apparatus when transitioning from the second standby mode to the first standby mode.

[0322] Referring to the drawings, for the transition from the second standby mode to the first standby mode, the second standby mode is turned off (S1550).

[0323] Next, with the transition to the first standby mode, the converter 925 within the image display apparatus 100 outputs a voltage Vzw of a first level of approximately 3.3 V (S1553), and enters the first standby mode.

[0324] On the other hand, at the time of the transition from the second standby mode to the first standby mode, the switch ST is turned off, so that the voltage Vzw of the first level can be supplied to the signal processing device 170. Thereby, the power consumption at the standby mode can be reduced.

[0325] Figure 17 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure.

[0326] Referring to the drawings, compared with the image display device 100 of FIG. 14, Figure 17 The image display device 100b of can further include a step-down portion 177 that outputs the voltage Vzw of the first level by stepping down the level of the direct current voltage from the converter 925.

[0327] That is, Figure 17 The image display device 100b of can supply the voltage Vzw of the first level to the microcomputer 173 based on the turn-off of the relay element RL, the turn-off of the switch ST, the operation of the converter 925, and the operation of the step-down portion 177 in the first standby mode, and supply the voltage Vst of the second level higher than the first level to the signal processing device 170 based on the turn-off of the relay element RL, the turn-on of the switch ST, and the operation of the converter 925 in the second standby mode. Thereby, the power consumption at the standby mode can be reduced.

[0328] That is, the image display device 100 according to another embodiment of the present disclosure includes a display 180, a signal processing device 170 that outputs an image signal to the display 180, a relay element RL that switches an input alternating current voltage Va, a converter 925 that is connected in parallel to one end n2 of the relay element RL, a step-down portion 177 that steps down the level of a direct current voltage from the converter 925, a microcomputer 173 that operates based on the direct current voltage from the converter 925, and a switch ST that is disposed between the converter 925 and the signal processing device 170 and operates based on a control signal output from the microcomputer 173.

[0329] On the other hand, the image display device 100 according to another embodiment of the present disclosure supplies the voltage Vzw of the first level to the microcomputer 173 based on the turn-off of the relay element RL, the turn-off of the switch ST, the operation of the converter 925, and the operation of the step-down portion 177 in the first standby mode.

[0330] On the other hand, the image display device 100 according to another embodiment of the present disclosure supplies the voltage Vst of the second level higher than the first level to the signal processing device 170 based on the turn-off of the relay element RL, the turn-on of the switch ST, and the operation of the converter 925 in the second standby mode. Thereby, the power consumption at the standby mode can be reduced. In particular, the power consumption can be reduced in each of a plurality of standby modes.

[0331] On the other hand, the converter 925 can output a voltage Vow of a fourth level higher than the first level of approximately 3.3 V in the first standby mode. The fourth level at this time can be approximately 4 V.

[0332] On the other hand, the converter 925 can output a voltage Vst of a second level of approximately 8 V higher than the fourth level in the second standby mode. Thereby, it is possible to reduce the power consumption in the standby mode.

[0333] On the other hand, the converter 925 can output a voltage Vow of a fourth level higher than the first level in the first standby mode, and the step-down unit 177 can step down the voltage Vow of the fourth level to the first level of approximately 3.3 V in the first standby mode.

[0334] On the other hand, the step-down unit 177 can step down a voltage Vst of a second level of approximately 8 V to the first level of approximately 3.3 V in the second standby mode. Thereby, it is possible to reduce the power consumption in the standby mode.

[0335] On the other hand, the image display device 100 of another embodiment of the present disclosure can further include a second converter 905 connected to the other end n4 of the relay element RL, which converts the input alternating voltage Va from the relay element RL into a direct current voltage, and a third converter 910 which converts the level of the direct current voltage from the second converter 905. Thereby, it is possible to stably supply the operating voltage Vop to the signal processing device 170 using the third converter 910.

[0336] On the other hand, the third converter 910 can supply a voltage Vop of a third level higher than the second level to the signal processing device 170 based on the turn-on of the relay element RL, the operation of the second converter 905, and the operation of the third converter 910 in the operating mode after the first standby mode or the second standby mode. Thereby, it is possible to stably supply the operating voltage Vop to the signal processing device 170 using the third converter 910.

[0337] Figure 18 is an example of an internal block diagram of an image display device of yet another embodiment of the present disclosure.

[0338] Referring to the drawings, the image display device 100c of yet another embodiment of the present disclosure is similar to the image display device 100 of FIG. 14, except that a latching relay LAR is configured instead of the relay element RL, and the switch ST is omitted.

[0339] The image display device 100c of the further embodiment of the present disclosure can supply the voltage Vzw of the first level to the microcomputer 173 based on the disconnection of the latching relay LAR and the action of the converter 925 in the first standby mode, and supply the voltage Vst of the second level higher than the first level to the signal processing device 170 based on the connection of the latching relay LAR, the action of the second converter 905, and the action of the third converter 910 in the second standby mode.

[0340] On the other hand, since the power consumption of the latching relay LAR is lower than that of the relay element RL of FIG. 14, the power consumption in the second standby mode can also be kept below the allowable reference value in the standby mode.

[0341] On the other hand, the image display device 100c according to the further embodiment of the present disclosure, in the first standby mode, the converter 925 can output the voltage Vzw of the first level, and in the second standby mode, the third converter 910 can output the voltage Vst of the second level.

[0342] On the other hand, the image display device 100c according to the further embodiment of the present disclosure, in the action mode, based on the connection of the latching relay LAR, the action of the second converter 905, and the action of the third converter 910, the voltage Vop of the third level output from the third converter 910 can be supplied to the signal processing device 170.

[0343] Figure 19a is a flowchart showing an action method of the image display device 100c in the first standby mode, Figure 18 is a flowchart showing an action method of the image display device 100c in the second standby mode.

[0344] Referring to the drawings, in the first standby mode, the converter 925 in the image display device 100c is turned on (S1810), and the latching relay LAR is disconnected based on a reset signal (S1825).

[0345] On the other hand, in the first standby mode, the converter 925 can output the voltage Vzw of the first level of approximately 3.3 V, and thus the voltage Vzw of the first level of approximately 3.3 V can be supplied to the microcomputer 173.

[0346] Figure 19b is a flowchart showing an action method of the image display device 100c in the second standby mode, Figure 18 is a flowchart showing an action method of the image display device 100c in the second standby mode.

[0347] Referring to the drawings, in the second standby mode, the switch 925 within the image display apparatus 100c is turned on (S1820), the latching relay LAR is turned on based on a set signal (S1522), and the second switch 905 and the third switch 910 are operated (S1824).

[0348] In the second standby mode, the third switch 910 can output the voltage Vst of the second level of approximately 8V, and thus the voltage Vst of the second level of approximately 8V is supplied to the signal processing apparatus 170.

[0349] Figure 19c is a flowchart of the operation method of the image display apparatus 100c, which indicates when the second standby mode is converted to the first standby mode. Figure 18 is a flowchart of the operation method of the image display apparatus 100c, which indicates when the second standby mode is converted to the first standby mode.

[0350] Referring to the drawings, in the first standby mode, the switch 925 within the image display apparatus 100c is turned on (S1830), and in the first standby mode, the switch 925 outputs the voltage Vzw of the first level of approximately 3.3V.

[0351] On the other hand, as the conversion to the second standby mode, the switch 925 within the image display apparatus 100c outputs the voltage Vst of the second level of approximately 8V (S1832), and enters the second standby mode.

[0352] Finally, as the conversion from the first standby mode to the second standby mode, the latching relay LAR is turned on based on a set signal (S1834), and the second switch 905 and the third switch 910 are operated (S1836).

[0353] Thus, the voltage Vst of the second level higher than the first level can be supplied to the signal processing apparatus 170, and finally the power consumption in the standby mode can be reduced.

[0354] Figure 19d is a flowchart of the operation method of the image display apparatus 100c, which indicates when the second standby mode is converted to the first standby mode. Figure 18 is a flowchart of the operation method of the image display apparatus 100c, which indicates when the second standby mode is converted to the first standby mode.

[0355] Referring to the drawings, for the conversion from the second standby mode to the first standby mode, the latching relay LAR is turned off based on a reset signal (S1850), and thus the second switch 905 and the third switch 910 are turned off (S1852).

[0356] Next, as the conversion to the first standby mode, the switch 925 within the image display apparatus 100c outputs the voltage Vzw of the first level of approximately 3.3V (S1854), and enters the first standby mode (S1856).

[0357] On the other hand, when switching from the second standby mode to the first standby mode, the signal processing device 170 can be supplied with the voltage Vzw of the first level. Thereby, it is possible to reduce the power consumption in the standby mode.

[0358] Figure 20 is an example of an internal block diagram of an image display device according to still another embodiment of the present disclosure.

[0359] With reference to the drawings, and Figure 18 Compared with the image display device 100c of Figure 20 The image display device 100d according to the present embodiment can further include a step-down unit 177 that outputs the voltage Vzw of the first level by stepping down the level of the direct-current voltage from the converter 925.

[0360] On the other hand, the converter 925 can output the voltage Vow of the fourth level higher than the first level of approximately 3.3 V in the first standby mode. The fourth level at this time can be approximately 4 V.

[0361] On the other hand, the converter 925 can output the voltage Vow of the fourth level higher than the first level in the first standby mode, and the step-down unit 177 can step down the voltage Vow of the fourth level to the first level of approximately 3.3 V in the first standby mode.

[0362] Although the preferred embodiments of the present disclosure are illustrated and described above, the present disclosure is not limited to the above-described specific embodiments, and it is natural for those skilled in the art to which the present disclosure pertains to make various modifications and implementations without departing from the gist of the present disclosure as claimed in the claims, and these modifications and implementations should not be individually understood as departing from the technical idea or prospect of the present disclosure.

Claims

1. An image display device, wherein, comprising: a display; a signal processing device that outputs an image signal to the display; a relay element that switches an input AC voltage; a converter that is connected in parallel to one end of the relay element; a microcomputer that operates based on a DC voltage from the converter; a switch that is disposed between the converter and the signal processing device, and that operates based on a control signal output from the microcomputer; in a first standby mode, a first level of voltage is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, and operation of the converter; in a second standby mode, a second level of voltage that is higher than the first level is supplied to the signal processing device based on disconnection of the relay element, connection of the switch, and operation of the converter.

2. The image display device according to claim 1, wherein the converter outputs the first level of voltage in the first standby mode, and outputs the second level of voltage that is higher than the first level in the second standby mode.

3. The image display device according to claim 1, wherein power consumption in the first standby mode is smaller than power consumption in the second standby mode.

4. The image display device according to claim 1, wherein further comprising: a second converter that is connected to the other end of the relay element, and that converts the input AC voltage from the relay element into a DC voltage; and a third converter that converts a level of the DC voltage from the second converter.

5. The image display device according to claim 4, wherein the third converter supplies a third level of voltage that is higher than the second level to the signal processing device based on connection of the relay element, operation of the second converter, and operation of the third converter in an operation mode that follows the first standby mode or the second standby mode.

6. The image display device according to claim 1, wherein when transitioning from the first standby mode to the second standby mode, the switch is connected, and thereby the second level of voltage that is higher than the first level is supplied to the signal processing device.

7. The image display device according to claim 1, wherein when transitioning from the second standby mode to the first standby mode, the switch is disconnected, and thereby the first level of voltage is supplied to the signal processing device.

8. The image display device according to claim 1, further comprising: a step-down unit that outputs the first level of voltage by stepping down a level of the DC voltage from the converter; in the first standby mode, the first level of voltage is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, operation of the converter, and operation of the step-down unit; in the second standby mode, the second level of voltage that is higher than the first level is supplied to the signal processing device based on disconnection of the relay element, connection of the switch, and operation of the converter.

9. The image display device according to claim 8, wherein ​ The converter outputs a voltage of a fourth level higher than the first level in the first standby mode. In the second standby mode, a voltage of the second level higher than the fourth level is output.

10. The image display apparatus according to claim 8, wherein The converter outputs a voltage of a fourth level higher than the first level in the first standby mode. The step-down portion steps down the voltage of the fourth level to the first level in the first standby mode.

11. The image display apparatus according to claim 9, wherein The step-down portion steps down the voltage of the second level to the first level in the second standby mode.

12. The image display apparatus according to claim 1, wherein The converter includes a flyback converter.

13. An image display device, wherein, comprises: a display; a signal processing apparatus that outputs an image signal to the display; a relay element that switches an input alternating voltage; a converter that is connected in parallel to one end of the relay element; a step-down portion that steps down a level of a direct current voltage from the converter; a microcomputer that operates based on the direct current voltage from the converter; a switch that is disposed between the converter and the signal processing apparatus, and that operates based on a control signal output from the microcomputer; in a first standby mode, a first level voltage is supplied to the microcomputer based on disconnection of the relay element, disconnection of the switch, operation of the converter, and operation of the step-down portion; in a second standby mode, a second level voltage higher than the first level is supplied to the signal processing apparatus based on disconnection of the relay element, connection of the switch, and operation of the converter.

14. The image display device according to claim 13, wherein further comprises: a second converter that is connected to the other end of the relay element, and that converts the input alternating voltage from the relay element into a direct current voltage; and a third converter that steps down a level of the direct current voltage from the second converter.

15. The image display apparatus according to claim 14, wherein the third converter supplies a third level voltage higher than the second level to the signal processing apparatus based on connection of the relay element, operation of the second converter, and operation of the third converter in an operation mode after the first standby mode or the second standby mode.

Images