Power supply device and image display device having same

Abstract

The present disclosure relates to a power supply device and an image display device having same. A power supply device according to an embodiment of the present disclosure comprises: a power integrated circuit which has a first switching element and a second switching element connected in series to each other, and outputs a second direct-current voltage to an output terminal on the basis of a first direct-current voltage input to an input terminal; a first trace electrically connected to the input terminal; and at least one capacitor electrically connected to the first trace, wherein the first trace has a first region to which the capacitor is electrically connected, and a second region arranged for separation between the first region and the input terminal, and the distance between the capacitor and the power integrated circuit is greater than the length of the second region. Accordingly, it is possible to reduce the likelihood of burnout of other circuit elements when the power integrated circuit burns out.

Description

Power supply unit and video display unit equipped with same

[0001] The present disclosure relates to a power supply device and an image display device having the same, and more particularly, to an image display device capable of reducing the possibility of damage to other circuit elements when a power integrated circuit is damaged.

[0002] A video display device is a device that displays images.

[0003] For this purpose, the image display device includes a panel for displaying an image, a power supply device for supplying power to the panel, etc.

[0004] Recently, due to the increase in image resolution and the enlargement of panels, the power output from power supplies is increasing.

[0005] Meanwhile, as the power output from the power supply increases, the possibility of damage to the power integrated circuit inside the power supply increases.

[0006] Meanwhile, when a power integrated circuit is damaged, it also affects adjacent capacitors, and thus there is a problem that the possibility of damage expanding is high.

[0007] The problem to be solved by the present disclosure is to provide a power supply device capable of reducing the possibility of damage to other circuit elements when a power integrated circuit is damaged, and an image display device having the same.

[0008] Another problem of the present disclosure is to provide a power supply device capable of reducing heat transfer from a power integrated circuit to a capacitor and an image display device having the same.

[0009] According to one embodiment of the present disclosure for solving the above problem, a power supply device and an image display device including the same include a first switching element and a second switching element that are connected in series with each other, a power integrated circuit that outputs a second direct current voltage to an output terminal based on a first direct current voltage input to an input terminal, a first trace electrically connected to the input terminal, and at least one capacitor electrically connected to the first trace, wherein the first trace includes a first region to which the capacitor is electrically connected and a second region arranged to separate the first region and the input terminal, and a distance between the capacitor and the power integrated circuit is longer than a length of the second region.

[0010] Meanwhile, the length of the second region may be longer than the length of the input terminal.

[0011] Meanwhile, the length of the second region may be longer than the length of the power integrated circuit.

[0012] Meanwhile, the width of the second region may be smaller than the width of the first region.

[0013] Meanwhile, the width of the second region may be the same as the width of the input terminal.

[0014] Meanwhile, the width of the second region can increase as it goes from the input terminal toward the first region.

[0015] Meanwhile, the first trace may further include a region between the first region and the second region, the width of which increases from the second region toward the first region.

[0016] Meanwhile, the power integrated circuit can output a second DC voltage having a lower level than the first DC voltage through an output terminal based on the switching operation of the first switching element or the second switching element.

[0017] Meanwhile, a power supply device according to one embodiment of the present disclosure may further include an inductor electrically connected to a first terminal of the power integrated circuit.

[0018] Meanwhile, a power supply device according to one embodiment of the present disclosure further includes a second trace electrically connected to an output terminal, the second trace having a third region and a fourth region arranged to provide a gap between the third region and the output terminal, and a width of the fourth region may be smaller than a width of the third region.

[0019] Meanwhile, the length of the fourth region may be longer than the length of the output terminal.

[0020] Meanwhile, the length of the fourth region may be longer than the length of the power integrated circuit.

[0021] Meanwhile, the width of the fourth region may be smaller than the width of the third region.

[0022] Meanwhile, the width of the fourth region may be the same as the width of the output terminal.

[0023] Meanwhile, the width of the fourth region can increase as it goes from the output terminal toward the third region.

[0024] Meanwhile, the thickness of the first region may be greater than the thickness of the second region.

[0025] A power supply device according to another embodiment of the present disclosure comprises a power integrated circuit having a first switching element and a second switching element connected in series with each other, and outputting a second direct current voltage to an output terminal based on a first direct current voltage input to an input terminal, a first trace electrically connected to the input terminal, and at least one capacitor electrically connected to the first trace, wherein the first trace has a first region to which the capacitor is electrically connected and a second region arranged to provide a gap between the first region and the input terminal, and a length of the second region is longer than a length of the power integrated circuit.

[0026] A power supply device and an image display device including the same according to one embodiment of the present disclosure include a power integrated circuit having a first switching element and a second switching element that are connected in series with each other, and outputting a second direct current voltage to an output terminal based on a first direct current voltage input to an input terminal, a first trace electrically connected to the input terminal, and at least one capacitor electrically connected to the first trace, wherein the first trace has a first region to which the capacitor is electrically connected and a second region arranged to separate the first region from the input terminal, and a distance between the capacitor and the power integrated circuit is longer than a length of the second region. Accordingly, the possibility of damage to other circuit elements when the power integrated circuit is damaged can be reduced. Furthermore, heat transfer from the power integrated circuit to the capacitor can be reduced.

[0027] Meanwhile, the length of the second region may be longer than the length of the input terminal. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0028] Meanwhile, the length of the second region may be longer than the length of the power integrated circuit. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0029] Meanwhile, the width of the second region may be smaller than the width of the first region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0030] Meanwhile, the width of the second region may be equal to the width of the input terminal. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0031] Meanwhile, the width of the second region can increase from the input terminal toward the first region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0032] Meanwhile, the first trace may further include a region between the first region and the second region, the width of which increases from the second region toward the first region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0033] Meanwhile, the power integrated circuit can output a second DC voltage having a lower level than the first DC voltage through the output terminal based on the switching operation of the first switching element or the second switching element. Accordingly, the power integrated circuit can output a voltage-stepped DC voltage.

[0034] Meanwhile, a power supply device according to one embodiment of the present disclosure may further include an inductor electrically connected to the first terminal of the power integrated circuit. Accordingly, a level-converted DC voltage can be output through the power integrated circuit.

[0035] Meanwhile, a power supply device according to one embodiment of the present disclosure further includes a second trace electrically connected to an output terminal, wherein the second trace has a third region and a fourth region arranged to provide a gap between the third region and the output terminal, and the width of the fourth region may be smaller than the width of the third region. Accordingly, the possibility of damage to other circuit elements when the power integrated circuit is damaged can be reduced.

[0036] Meanwhile, the length of the fourth region may be longer than the length of the output terminal. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0037] Meanwhile, the length of the fourth region may be longer than the length of the power integrated circuit. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0038] Meanwhile, the width of the fourth region may be smaller than the width of the third region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0039] Meanwhile, the width of the fourth region may be equal to the width of the output terminal. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0040] Meanwhile, the width of the fourth region can increase from the output terminal toward the third region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0041] Meanwhile, the thickness of the first region may be greater than the thickness of the second region. Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit can be reduced.

[0042] A power supply device according to another embodiment of the present disclosure comprises a power integrated circuit having a first switching element and a second switching element connected in series with each other, and outputting a second direct current voltage to an output terminal based on a first direct current voltage input to an input terminal, a first trace electrically connected to the input terminal, and at least one capacitor electrically connected to the first trace, wherein the first trace has a first region to which the capacitor is electrically connected and a second region arranged to provide a gap between the first region and the input terminal, and the second region has a length longer than the length of the power integrated circuit. Accordingly, the possibility of damage to other circuit elements when the power integrated circuit is damaged can be reduced. Furthermore, heat transfer from the power integrated circuit to the capacitor can be reduced.

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

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

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

[0046] Fig. 4a is a drawing illustrating a control method of the remote control device of Fig. 2.

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

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

[0049] FIG. 6 is an example of an internal block diagram of a video display device according to an embodiment of the present disclosure.

[0050] Fig. 7 is an example of a circuit diagram of the ac / dc converter of Fig. 6.

[0051] Fig. 8 is an example of a circuit diagram of the dc / dc converter of Fig. 6.

[0052] Fig. 9 is an example of a circuit diagram of the third dc / dc converter of Fig. 6.

[0053] FIGS. 10A to 10D are drawings for reference in the description of a power supply device related to the present disclosure.

[0054] FIG. 11 is a diagram illustrating a power supply device according to one embodiment of the present disclosure.

[0055] FIG. 12 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0056] FIG. 13 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0057] FIG. 14 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0058] Figure 15 is a drawing referred to in the descriptions of Figures 11 to 14.

[0059] Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

[0060] The suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification and do not impart any particularly significant meaning or role to the components themselves. Therefore, the terms "module" and "part" may be used interchangeably.

[0061] FIG. 1 is a drawing illustrating an image display device according to one embodiment of the present disclosure.

[0062] Referring to the drawing, the image display device (100) may include a display (180).

[0063] Meanwhile, due to enlargement of the display (180) or increase in image resolution, the power output from the power supply unit (190) of FIG. 2 may increase.

[0064] Meanwhile, as the power output from the power supply unit (190) increases, the possibility of damage to the power integrated circuit inside the power supply unit increases.

[0065] Accordingly, in this disclosure, a method is proposed that can reduce the possibility of damage to other circuit elements when a switching element, etc. in a power supply unit (190) is damaged.

[0066] To this end, a power supply unit (190) in an image display device (100) according to one embodiment of the present disclosure comprises a power integrated circuit having a switching element, a first trace electrically connected to an input terminal of the power integrated circuit, and at least one capacitor electrically connected to the first trace, wherein the first trace has a first region to which the capacitor is electrically connected and a second region arranged to provide a gap between the first region and the input terminal, and the width of the second region is smaller than the width of the first region. Accordingly, the possibility of damage to other circuit elements when the power integrated circuit is damaged can be reduced.

[0067] Meanwhile, a power supply unit (180) in a video display device (100) according to one embodiment of the present disclosure includes a power integrated circuit having a switching element, a first trace electrically connected to an input terminal of the power integrated circuit, and at least one capacitor electrically connected to the first trace, wherein the first trace includes a first region to which the capacitor is electrically connected and a second region arranged to provide a gap between the first region and the input terminal, and the length of the second region is longer than the length of the input terminal. Accordingly, the possibility of damage to other circuit elements when the power integrated circuit is damaged can be reduced.

[0068] Meanwhile, the video display device (100) of FIG. 1 can be a TV, monitor, vehicle display, tablet PC, mobile terminal, etc.

[0069] Figure 2 is an example of an internal block diagram of the video display device of Figure 1.

[0070] Referring to FIG. 2, an image display device (100) according to an embodiment of the present disclosure may include an image receiving unit (105), an external device interface unit (130), a storage unit (140), a user input interface unit (150), a sensor unit (not shown), a signal processing unit (170), a display (180), and an audio output unit (185).

[0071] The video receiving unit (105) may include a tuner unit (110), a demodulation unit (120), a network interface unit (130), and an external device interface unit (130).

[0072] Meanwhile, unlike the drawing, the video receiving unit (105) may include only a tuner unit (110), a demodulator unit (120), and an external device interface unit (130). That is, it may not include a network interface unit (130).

[0073] The tuner unit (110) selects an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an antenna (not shown). In addition, it converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video or audio signal.

[0074] 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 video or audio signal (CVBS / SIF). That is, the tuner unit (110) can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner unit (110) can be directly input to the signal processing device (170).

[0075] Meanwhile, the tuner unit (110) may be equipped with multiple tuners to receive broadcast signals of multiple channels. Alternatively, a single tuner that simultaneously receives broadcast signals of multiple channels is also possible.

[0076] The demodulation unit (120) receives the digital IF signal (DIF) converted from the tuner unit (110) and performs a demodulation operation.

[0077] The demodulator (120) can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal may be a signal in which a video signal, an audio signal, or a data signal is multiplexed.

[0078] The stream signal output from the demodulator (120) can be input to the signal processing device (170). The signal processing device (170) performs demultiplexing, image / audio signal processing, etc., and then outputs an image to the display (180) and outputs an audio to the audio output device (185).

[0079] The external device interface unit (130) can transmit or receive data to or from a connected external device (not shown), for example, a set-top box (50). To this end, the external device interface unit (130) may include an A / V input / output unit (not shown).

[0080] The external device interface unit (130) can be connected to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), set-top box, etc., via wired / wireless connection, and can also perform input / output operations with the external devices.

[0081] The A / V input / output unit can receive video and audio signals from an external device. Meanwhile, the wireless communication unit (not shown) can perform short-range wireless communication with other electronic devices.

[0082] Through this wireless communication unit (not shown), the external device interface unit (130) can exchange data with an adjacent mobile terminal (600). In particular, the external device interface unit (130) can receive device information, running application information, application images, etc. from the mobile terminal (600) in mirroring mode.

[0083] The network interface unit (135) provides an interface for connecting the video 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, a content provider, or a network operator via a network.

[0084] Meanwhile, the network interface unit (135) may include a wireless communication unit (not shown).

[0085] The storage unit (140) may store programs for each signal processing and control within the signal processing device (170), and may also store signal-processed image, voice, or data signals.

[0086] In addition, the storage unit (140) may also perform a function for temporary storage of video, audio, or data signals input to the external device interface unit (130). In addition, the storage unit (140) may store information regarding a specific broadcast channel through a channel memory function such as a channel map.

[0087] Although the storage unit (140) of FIG. 2 illustrates an embodiment in which the storage unit (140) is provided separately from the signal processing device (170), the scope of the present disclosure is not limited thereto. The storage unit (140) may be included within the signal processing device (170).

[0088] The user input interface unit (150) transmits a signal input by the user to the signal processing device (170) or transmits a signal from the signal processing device (170) to the user.

[0089] For example, a user input signal such as power on / off, channel selection, screen setting, etc. may be transmitted / received from a remote control device (200), a user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, a setting value, etc. may be transmitted to a signal processing device (170), a user input signal input from a sensor unit (not shown) that senses a user's gesture may be transmitted to the signal processing device (170), or a signal from the signal processing device (170) may be transmitted to a sensor unit (not shown).

[0090] The signal processing device (170) can demultiplex an input stream or process demultiplexed signals through a tuner unit (110), a demodulator unit (120), a network interface unit (135), or an external device interface unit (130) to generate and output a signal for video or audio output.

[0091] For example, the signal processing device (170) can receive a broadcast signal or an HDMI signal received from the image receiving unit (105), perform signal processing based on the received broadcast signal or HDMI signal, and output a signal-processed image signal.

[0092] An image signal processed by a signal processing device (170) may be input to a display (180) and displayed as an image corresponding to the image signal. In addition, an image signal processed by a signal processing device (170) may be input to an external output device through an external device interface unit (130).

[0093] The voice signal processed in the signal processing device (170) can be output as sound to the audio output unit (185). In addition, the voice signal processed in the signal processing device (170) can be input to an external output device through the external device interface unit (130).

[0094] Although not illustrated in FIG. 2, the signal processing device (170) may include a demultiplexing unit, an image processing unit, etc. That is, the signal processing device (170) may perform various signal processing operations and, accordingly, may be implemented in the form of a system on chip (SOC). This will be described later with reference to FIG. 3.

[0095] In addition, the signal processing device (170) can control the overall operation within the video display device (100). For example, the signal processing device (170) can control the tuner unit (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

[0096] In addition, the signal processing device (170) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

[0097] Meanwhile, the signal processing device (170) can control the display (180) to display an image. At this time, the image displayed on the display (180) may be a still image or a moving image, and may be a 2D image or a 3D image.

[0098] Meanwhile, 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 screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.

[0099] Meanwhile, the signal processing device (170) can recognize the user's location based on an image captured from a camera (not shown). For example, the distance (z-axis coordinate) between the user and the image display device (100) can be determined. In addition, the x-axis coordinate and y-axis coordinate within the display (180) corresponding to the user's location can be determined.

[0100] The display (180) generates a driving signal by converting a video signal, data signal, OSD signal, control signal, etc. processed by the signal processing device (170) or a video signal, data signal, control signal, etc. received from the external device interface unit (130).

[0101] Meanwhile, the display (180) is configured as a touch screen and can be used as an input device in addition to an output device.

[0102] The audio output unit (185) receives a signal processed by the signal processing device (170) and outputs it as voice.

[0103] A camera unit (not shown) photographs a user. The camera unit (not shown) may be implemented with a single camera, but is not limited thereto, and may also be implemented with multiple cameras. Image information captured by the camera unit (not shown) may be input to a signal processing device (170).

[0104] The signal processing device (170) can detect the user's gesture based on an image captured from a shooting unit (not shown) or a signal detected from a sensor unit (not shown), or a combination thereof.

[0105] The power supply unit (190) supplies power to the entire video display device (100).

[0106] In particular, the power supply unit (190) can supply power to a signal processing unit (170) that can be implemented in the form of a system on chip (SOC), a display (180) for displaying images, and an audio output unit (185) for audio output.

[0107] Specifically, the power supply (190) may be equipped with a converter that converts the level of the input voltage.

[0108] For example, the power supply (190) may have an ac / dc converter and a dc / dc converter when the input voltage is an alternating voltage.

[0109] As another example, the power supply (190) may have a dc / dc converter when the input voltage is a direct current voltage.

[0110] The remote control device (200) transmits user input to the user input interface unit (150). To this end, the remote control device (200) may use Bluetooth, RF (Radio Frequency) communication, IR (Infrared) communication, UWB (Ultra Wideband), ZigBee, etc. In addition, the remote control device (200) may receive video, audio, or data signals output from the user input interface unit (150) and display or output the same as audio on the remote control device (200).

[0111] Meanwhile, the above-described video display device (100) may be a digital broadcast receiver capable of receiving fixed or mobile digital broadcasts.

[0112] Meanwhile, the block diagram of the image display device (100) illustrated in FIG. 2 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the image display device (100) actually implemented. That is, two or more components may be combined into one component, or one component may be subdivided into two or more components, as needed. In addition, the functions performed by each block are intended to explain the embodiment of the present disclosure, and the specific operations or devices thereof do not limit the scope of the present disclosure.

[0113] Figure 3 is an example of an internal block diagram of the signal processing device of Figure 2.

[0114] Referring to the drawings, a signal processing device (170) according to an embodiment of the present disclosure may include a demultiplexing unit (310), an image processing unit (320), a processor (330), and an audio processing unit (370). In addition, a data processing unit (not shown) may be further included.

[0115] The demultiplexer (310) demultiplexes the input stream. For example, when MPEG-2 TS is input, it can be demultiplexed to separate it into video, audio, and data signals, respectively. Here, the stream signal input to the demultiplexer (310) may be a stream signal output from the tuner (110), the demodulator (120), or the external device interface (130).

[0116] The image processing unit (320) can perform signal processing on an input image. For example, the image processing unit (320) can perform image processing on an image signal demultiplexed from the demultiplexing unit (310).

[0117] To this end, the image processing unit (320) may include an image decoder (325), a scaler (335), an image quality processing unit (635), an image encoder (not shown), a graphics processing unit (340), a frame rate conversion unit (350), and a formatter (360).

[0118] The video decoder (325) decodes the demultiplexed video signal, and the scaler (335) scales the resolution of the decoded video signal so that it can be output on the display (180).

[0119] The video decoder (325) can be equipped with decoders of various standards. For example, it can be equipped with an MPEG-2, H.264 decoder, a 3D video decoder for color images and depth images, a decoder for multi-view images, etc.

[0120] The scaler (335) can scale an input video signal that has been decoded by a video decoder (325), etc.

[0121] For example, the scaler (335) can upscale when the size or resolution of the input image signal is small, and downscale when the size or resolution of the input image signal is large.

[0122] The image quality processing unit (635) can perform image quality processing on an input image signal for which image decoding has been completed in the image decoder (325), etc.

[0123] For example, the image quality processing unit (635) may perform noise removal processing of an input image signal, expand the resolution of the gradation of an input image signal, perform image resolution enhancement, perform signal processing based on high dynamic range (HDR), vary the frame rate, or perform image quality processing corresponding to panel characteristics, particularly the panel.

[0124] The graphic processing unit (340) generates an OSD signal based on user input or on its own. For example, based on a user input signal, a signal for displaying various information in the form of graphics or text on the screen of the display (180) may be generated. The generated OSD signal may include various data such as the user interface screen of the image display device (100), various menu screens, widgets, and icons. In addition, the generated OSD signal may include a 2D object or a 3D object.

[0125] In addition, the graphic processing unit (340) can generate a pointer that can be displayed on the display based on a pointing signal input from the remote control device (200). In particular, such a pointer can be generated by the pointing signal processing unit, and the graphic processing unit (240) can include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) can also be provided separately rather than being included within the graphic processing unit (240).

[0126] The frame rate converter (FRC) (350) can convert the frame rate of an input video. Meanwhile, the frame rate converter (350) can also output the video as is without a separate frame rate conversion.

[0127] Meanwhile, the formatter (360) can change the format of an input video signal into a video signal for display on a display and output it.

[0128] In particular, the formatter (360) can change the format of the video signal to correspond to the display panel.

[0129] Meanwhile, the formatter (360) can also change the format of the video signal.

[0130] The processor (330) can control the overall operation within the image display device (100) or the signal processing device (170).

[0131] For example, the processor (330) can control the tuner (110) to select (tuning) an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

[0132] In addition, the processor (330) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

[0133] Additionally, the processor (330) can perform data transmission control with the network interface unit (135) or the external device interface unit (130).

[0134] Additionally, the processor (330) can control the operation of the demultiplexing unit (310), the image processing unit (320), etc., within the signal processing device (170).

[0135] Meanwhile, the audio processing unit (370) within the signal processing device (170) can perform audio processing of the demultiplexed audio signal. To this end, the audio processing unit (370) can be equipped with various decoders.

[0136] Additionally, the audio processing unit (370) within the signal processing device (170) can process bass, treble, volume control, etc.

[0137] A data processing unit (not shown) within a signal processing device (170) can perform data processing on a demultiplexed data signal. For example, if the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal may be electronic program guide information (EPG) information that includes broadcast information such as the start time and end time of a broadcast program broadcast on each channel.

[0138] Meanwhile, the block diagram of the signal processing device (170) illustrated in FIG. 3 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the signal processing device (170) actually implemented.

[0139] In particular, the frame rate conversion unit (350) and formatter (360) may be provided separately from the image processing unit (320).

[0140] Meanwhile, a signal processing device (170) according to an embodiment of the present disclosure may further include a neural network processor (333) for learning processing, etc.

[0141] Fig. 4a is a drawing illustrating a control method of the remote control device of Fig. 2.

[0142] As shown in (a) of FIG. 4a, a pointer (205) corresponding to a remote control device (200) is displayed on the display (180).

[0143] The user can move or rotate the remote control device (200) up and down, left and right ((b) of FIG. 4a), and forward and backward ((c) of FIG. 4a). The pointer (205) displayed on the display (180) of the video display device corresponds to the movement of the remote control device (200). As shown in the drawing, the pointer (205) moves and is displayed according to the movement in 3D space, so the remote control device (200) can be called a space remote control or a 3D pointing device.

[0144] Figure 4a (b) illustrates that when a user moves the remote control device (200) to the left, the pointer (205) displayed on the display (180) of the video display device also moves to the left in response.

[0145] Information about the movement of the remote control device (200) detected 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 about the movement of the remote control device (200). The image display device can display the pointer (205) to correspond to the calculated coordinates.

[0146] FIG. 4A (c) illustrates a case where, while pressing a specific button within the remote control device (200), the user moves the remote control device (200) away from the display (180). As a result, the selection area within the display (180) corresponding to the pointer (205) may be zoomed in and displayed in an enlarged manner. Conversely, when the user moves the remote control device (200) closer to the display (180), the selection area within the display (180) corresponding to the pointer (205) may be zoomed out and displayed in a reduced manner. Meanwhile, when the remote control device (200) moves away from the display (180), the selection area may be zoomed out, and when the remote control device (200) moves closer to the display (180), the selection area may be zoomed in.

[0147] Meanwhile, when a specific button within the remote control device (200) is pressed, recognition of up, down, left, and right movements may be excluded. That is, when the remote control device (200) moves away from or toward the display (180), up, down, left, and right movements may not be recognized, and only forward and backward movements may be recognized. When a specific button within the remote control device (200) is not pressed, only the pointer (205) moves in accordance with the up, down, left, and right movements of the remote control device (200).

[0148] Meanwhile, the movement speed or movement direction of the pointer (205) can correspond to the movement speed or movement direction of the remote control device (200).

[0149] Figure 4b is an internal block diagram of the remote control device of Figure 2.

[0150] Referring to the drawing, the remote control device (200) may include a wireless communication unit (425), a user input unit (435), a sensor unit (440), an output unit (450), a power supply unit (460), a storage unit (470), and a control unit (480).

[0151] The wireless communication unit (425) transmits and receives signals with any one of the image display devices according to the embodiments of the present disclosure described above. Among the image display devices according to the embodiments of the present disclosure, one image display device (100) will be described as an example.

[0152] In this embodiment, the remote control device (200) may be equipped with an RF module (421) capable of transmitting and receiving signals with the image display device (100) in accordance with RF communication standards. In addition, the remote control device (200) may be equipped with an IR module (423) capable of transmitting and receiving signals with the image display device (100) in accordance with IR communication standards.

[0153] In this embodiment, the remote control device (200) transmits a signal containing information about the movement of the remote control device (200) to the image display device (100) through the RF module (421).

[0154] 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 commands for power on / off, channel change, volume change, etc. to the image display device (100) through the IR module (423) as needed.

[0155] The user input unit (435) may be configured as a keypad, a button, a touch pad, or a touch screen. The user can input a command related to the image display device (100) to the remote control device (200) by operating the user input unit (435). If the user input unit (435) has a hard key button, the user can input a command related to the image display device (100) to the remote control device (200) by pushing the hard key button. If the user input unit (435) has a touch screen, the user can input a command related to the image display device (100) to the remote control device (200) by touching a soft key of the touch screen. In addition, the user input unit (435) may be equipped with various types of input means that the user can operate, such as a scroll key or a jog key, and the present embodiment does not limit the scope of the present disclosure.

[0156] The sensor unit (440) may be equipped with a gyro sensor (441) or an acceleration sensor (443). The gyro sensor (441) may sense information regarding the movement of the remote control device (200).

[0157] For example, a gyro sensor (441) can sense information about the operation of a remote control device (200) based on the x, y, and z axes. An acceleration sensor (443) can sense information about the movement speed of the remote control device (200). Meanwhile, a distance measuring sensor can be further provided, thereby sensing the distance to the display (180).

[0158] The output unit (450) can output a video or audio signal corresponding to the operation of the user input unit (435) or to a signal transmitted from the video display device (100). Through the output unit (450), the user can recognize whether the user input unit (435) is being operated or whether the video display device (100) is being controlled.

[0159] For example, the output unit (450) may be equipped with an LED module (451) that lights up when the user input unit (435) is operated or a signal is transmitted and received with the image display device (100) through the wireless communication unit (425), a vibration module (453) that generates vibration, an audio output module (455) that outputs audio, or a display module (457) that outputs audio.

[0160] The power supply unit (460) supplies power to the remote control device (200). The power supply unit (460) can reduce power waste by stopping the power supply when the remote control device (200) is not moved for a predetermined period of time. The power supply unit (460) can resume the power supply when a predetermined key provided on the remote control device (200) is operated.

[0161] The storage unit (470) can store various types of programs, application data, etc. required for the control or operation of the remote control device (200). If the remote control device (200) wirelessly transmits and receives signals through the image display device (100) and the RF module (421), the remote control device (200) and the image display device (100) transmit and receive signals through a predetermined frequency band. The control unit (480) of the remote control device (200) can store and refer to information regarding the frequency band through which signals can be wirelessly transmitted and received between the remote control device (200) and the paired image display device (100), etc., in the storage unit (470).

[0162] The control unit (480) controls all matters related to the control of the remote control device (200). The control unit (480) can transmit a signal corresponding to a predetermined key operation of the user input unit (435) or a signal corresponding to the movement of the remote control device (200) sensed by the sensor unit (440) to the image display device (100) via the wireless communication unit (425).

[0163] The user input interface unit (150) of the video display device (100) may be equipped with a wireless communication unit (151) capable of wirelessly transmitting and receiving signals with a remote control device (200), and a coordinate value calculation unit (415) capable of calculating the coordinate value of a pointer corresponding to the operation of the remote control device (200).

[0164] The user input interface unit (150) can wirelessly transmit and receive signals to and from the remote control device (200) via the RF module (412). In addition, the user input interface unit (150) can receive signals transmitted by the remote control device (200) according to the IR communication standard via the IR module (413).

[0165] The coordinate value calculation unit (415) can calculate the coordinate values ​​(x, y) of the pointer (205) to be displayed on the display (170) by correcting hand shake or error from a signal corresponding to the operation of the remote control device (200) received through the wireless communication unit (151).

[0166] A transmission signal of a remote control device (200) input to a video display device (100) through a user input interface unit (150) is transmitted to a signal processing device (170) of the video display device (100). The signal processing device (170) can determine information about the operation and key operation of the remote control device (200) from the signal transmitted from the remote control device (200) and control the video display device (100) in response thereto.

[0167] As another example, the remote control device (200) can calculate pointer coordinate values ​​corresponding to the operation and output them to the user input interface unit (150) of the image display device (100). In this case, the user input interface unit (150) of the image display device (100) can transmit information about the received pointer coordinate values ​​to the signal processing device (170) without a separate hand shake or error correction process.

[0168] In addition, as another example, the coordinate value calculation unit (415) may be provided inside the signal processing device (170) rather than the user input interface unit (150), unlike in the drawing.

[0169] Figure 5 is an example of an internal block diagram of the display of Figure 2.

[0170] Referring to the drawing, the display (180) based on an organic light-emitting panel may include an organic light-emitting panel (210), a first interface unit (230), a second interface unit (231), a timing controller (232), a gate driver unit (234), a data driver unit (236), a memory (240), a processor (270), a power supply unit (290), a current detector unit (510), etc.

[0171] The display (180) receives a video signal (Vd), a first DC voltage (V1), and a second DC voltage (V2), and can display a predetermined image based on the video signal (Vd).

[0172] Meanwhile, the first interface unit (230) within the display (180) can receive a video signal (Vd) and a first DC voltage (V1) from the signal processing device (170).

[0173] Here, the first DC voltage (V1) can be used for the operation of the power supply (290) and the timing controller (232) within the display (180).

[0174] Next, the second interface unit (231) can receive a second DC voltage (V2) from an external power supply unit (190). Meanwhile, the second DC voltage (V2) can be input to a data driving unit (236) within the display (180).

[0175] The timing controller (232) can output a data driving signal (Sda) and a gate driving signal (Sga) based on a video signal (Vd).

[0176] For example, when the first interface unit (230) converts an input image signal (Vd) and outputs a converted image signal (va1), the timing controller (232) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the converted image signal (va1).

[0177] The timing controller (232) can receive, in addition to the video signal (Vd) from the signal processing device (170), a control signal, a vertical synchronization signal (Vsync), etc.

[0178] In addition, the timing controller (232) can output a gate drive signal (Sga) for the operation of the gate drive unit (234) and a data drive signal (Sda) for the operation of the data drive unit (236) based on a control signal, a vertical synchronization signal (Vsync), etc., in addition to a video signal (Vd).

[0179] The data driving signal (Sda) at this time may be a data driving signal for driving RGBW subpixels when the panel (210) has RGBW subpixels.

[0180] Meanwhile, the timing controller (232) can further output a control signal (Cs) to the gate driver (234).

[0181] The gate driving unit (234) and the data driving unit (236) supply a scan signal and an image signal to the organic light-emitting panel (210) through the gate line (GL) and the data line (DL), respectively, in accordance with the gate driving signal (Sga) and the data driving signal (Sda) from the timing controller (232). Accordingly, the organic light-emitting panel (210) displays a predetermined image.

[0182] Meanwhile, the organic light-emitting panel (210) may include an organic light-emitting layer, and in order to display an image, a plurality of gate lines (GL) and data lines (DL) may be arranged in a matrix form to cross each pixel corresponding to the organic light-emitting layer.

[0183] Meanwhile, the data driving unit (236) can output a data signal to the organic light-emitting panel (210) based on the second DC voltage (V2) from the second interface unit (231).

[0184] The power supply unit (290) can supply various power sources to the gate driver unit (234), the data driver unit (236), the timing controller (232), etc.

[0185] The current detection unit (510) can detect the current flowing in the subpixel of the organic light-emitting panel (210). The detected current can be input to a processor (270) or the like for cumulative current calculation.

[0186] The processor (270) can perform various controls within the display (180). For example, it can control the gate driver (234), the data driver (236), the timing controller (232), etc.

[0187] Meanwhile, the processor (270) can receive information on current flowing in the subpixel of the organic light-emitting panel (210) from the current detection unit (510).

[0188] FIG. 6 is an example of an internal block diagram of a video display device according to an embodiment of the present disclosure.

[0189] Referring to the drawings, an image display device (100) according to an embodiment of the present disclosure includes a display (180), a signal processing device (170) that outputs an image signal to the display (180), and a power supply device (190) that outputs a driving voltage to the display (180).

[0190] The power supply unit (190) in the drawing may correspond to the power supply unit (190) of FIG. 2.

[0191] A power supply device (190) according to one embodiment of the present disclosure includes an ac / dc converter (905) that converts an input alternating current voltage (Va) into a direct current voltage, and a dc / dc converter (910) that converts the level of the direct current voltage from the ac / dc converter (905) to output a display driving voltage (EVDD).

[0192] In the drawing, an ac / dc converter (905) is illustrated as being placed between node n2, which is an input terminal of a power supply (190), and n3, which is an input node of a dc / dc converter (910).

[0193] Meanwhile, n1, the output node of the ac / dc converter (905), can be electrically connected to the display (180).

[0194] The AC / DC converter (905) can convert an input AC voltage (Va) into a first level DC voltage and output it by having a diode or switching element.

[0195] The dc / dc converter (910) can convert a first level direct current voltage input and output a second level display driving voltage (EVDD).

[0196] For example, the converter (910) can step up a first level DC voltage to output a second level display driving voltage (EVDD) higher than the first level.

[0197] Meanwhile, if the display (180) is an organic light-emitting panel, the display driving voltage (EVDD) may be a pixel driving voltage of an organic light-emitting pixel.

[0198] Meanwhile, the image display device (100) according to one embodiment of the present disclosure further includes a main board (900) including a signal processing device (170) and a microcomputer (173).

[0199] The signal processing device (170) can output a video signal to a display (180).

[0200] When a remote control signal is received, the microcomputer (173) operates and can control the operation of the signal processing device (170) or the power supply device (190).

[0201] A power supply device (190) according to one embodiment of the present disclosure can output a microcomputer driving voltage (Vst) for the operation of a microcomputer (173).

[0202] To this end, a power supply device (190) according to one embodiment of the present disclosure may further include a second dc / dc converter (915) that converts a first level direct current voltage input and outputs a third level microcomputer driving voltage (Vst).

[0203] At this time, the microcomputer driving voltage (Vst) may be lower than the display driving voltage (EVDD).

[0204] Meanwhile, the main board (900) or signal processing device (170) can output a display on signal (Spo) or a display (180) off signal (Spf) to the power supply device (190).

[0205] Accordingly, when the display (180) is on, the dc / dc converter (910) operates, and when the display (180) is off, the operation of the dc / dc converter (910) may be stopped.

[0206] Meanwhile, the main board (900) or signal processing device (170) can output a switch drive control signal (SSwa) to the ac / dc converter (905). Accordingly, the ac / dc converter (905) can be driven stably.

[0207] Meanwhile, the main board (900) or signal processing device (170) can output a switch driving control signal (SSwb) to the dc / dc converter (910). Accordingly, the dc / dc converter (910) can be driven stably.

[0208] Meanwhile, the main board (900) or signal processing device (170) can output a switch drive control signal (SSwc) to the second dc / dc converter (915). Accordingly, the second dc / dc converter (915) can be stably driven.

[0209] Meanwhile, the power supply unit (190) may further include a signal transmission unit (FDK) connected between the converter (910) and the main board (900).

[0210] The signal transmission unit (FDK) can receive a display on signal (Spo) or a display off signal (Spf) from a main board (900) including a signal processing device (170) or a signal processing device (170), and transmit the display on signal (Spo) or the display off signal (Spf) to the converter (910).

[0211] A power supply device (190) according to one embodiment of the present disclosure may further include a third dc / dc converter (913) that converts a first level of input DC voltage to output a fourth level of gate driving voltage (VDD).

[0212] The gate driving voltage (VDD) at this time may be lower than the display driving voltage (EVDD).

[0213] Meanwhile, the gate driving voltage (VDD) and the display driving voltage (EVDD) can be supplied to a display (180) separate from the main board (900).

[0214] Meanwhile, the gate driving voltage (VDD) and the display driving voltage (EVDD) may also be supplied to the main board (900).

[0215] Meanwhile, the main board (900) or signal processing device (170) can output a switch drive control signal (SSwd) to the third dc / dc converter (913). Accordingly, the third dc / dc converter (913) can be driven stably.

[0216] Fig. 7 is an example of a circuit diagram of the ac / dc converter of Fig. 6.

[0217] Referring to the drawing, the ac / dc converter (905) of FIG. 6 has a plurality of switching elements (Sa, Sb) and a plurality of diode elements (Da, Db) to efficiently supply high power, and can convert the level of an input alternating current voltage (Vac) based on the switching operation of the switching elements (Sa, Sb) to output a direct current voltage (Vdc).

[0218] Specifically, the ac / dc converter (905) may include a first leg (lega) having a first diode element (Da) and a first leg switching element (Sa) that are connected in series with each other, and a second leg (legb) that is connected in parallel to the first leg (lega) and has a second diode element (Db) and a second leg switching element (Sb) that are connected in series with each other.

[0219] One end (cathode) of the first diode element (Da) is connected to one end (na) of the output terminal (na-nb) of the ac / dc converter (905), and the other end (anode) of the first diode element (Da) can be connected to the first node (nc).

[0220] One end of the first leg switching element (Sa) is connected to the first node (nc), and the other end of the first leg switching element (Sa) can be connected to the other end (nb) of the output terminal (na-nb) of the ac / dc converter (905).

[0221] One end (cathode) of the second diode element (Db) is connected to one end (na) of the output terminal (na-nb) of the ac / dc converter (905), and the other end (anode) of the second diode element (Db) can be connected to the second node (nd).

[0222] One end of the second leg switching element (Sb) is connected to the second node (nd), and the other end of the second leg switching element (Sb) can be connected to the other end (nb) of the output terminal (na-nb) of the ac / dc converter (905).

[0223] Meanwhile, the AC / DC converter (905) of FIG. 7 can be named a half-bridge type AC / DC converter.

[0224] Meanwhile, the ac / dc converter (905) may further include an inductor (L) disposed between the first node (na) between the first diode element (Da) and the first leg switching element (Sa) and the input terminal to which the input AC voltage (Vac) is input.

[0225] Meanwhile, a dc / dc converter (910) connected to both ends of a dc capacitor (Ca) can be connected to the output terminal (nc-nd) of the ac / dc converter (905).

[0226] Fig. 8 is an example of a circuit diagram of the dc / dc converter of Fig. 6.

[0227] The dc / dc converter (910) may include a transformer (805), a first input switching element (SW1) and a second input switching element (SW2) arranged at an input terminal of the transformer (805) and connected in series with each other, and a resonant capacitor (Cr) and a resonant inductor (Lr) respectively connected between the input terminal of the transformer (805) and the second input switching element (SW2). Accordingly, a display driving voltage (EVDD) can be output based on resonance.

[0228] Meanwhile, the dc / dc converter (910) may further include full bridge diode elements (D1 to D4) arranged at the output terminal of the transformer (805) and a capacitor element (Cd) arranged at both ends (nda-ndb) of the output terminal of the full bridge diode elements (D1 to D4). Accordingly, the display driving voltage (EVDD) can be stably output based on resonance.

[0229] Meanwhile, it is preferable that no resistor elements are placed at both ends (nda-ndb) of the capacitor element (Cd).

[0230] Since no resistor elements are placed at both ends (nda-ndb) of the capacitor element (Cd), unnecessary power consumption due to the resistor elements can be reduced. Accordingly, the power consumption of the power supply unit (190) can be reduced.

[0231] Meanwhile, the dc / dc converter (910) may further include a voltage detection circuit (935) that detects the voltage across both ends of the second input switching element (SW2).

[0232] Meanwhile, the dc / dc converter (910) can turn on the second input switching element (SW2) when the voltage across both terminals (nm-nb) of the second input switching element (SW2) detected by the voltage detection circuit (935) is zero voltage. Accordingly, zero voltage switching of the second input switching element (SW2) can be performed, thereby reducing noise.

[0233] Meanwhile, the voltage detection circuit (935) may include a capacitor (Ct) connected to a node (nm) between the first input switching element (SW1) and the second input switching element (SW2), a Zener diode (Dt) disposed 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). Accordingly, the voltage across both ends of the second input switching element (SW2) can be stably detected.

[0234] Meanwhile, the dc / dc converter (910) may further include a switching control unit (925) that controls the first input switching element (SW1) and the second input switching element (SW2).

[0235] Meanwhile, the switching control unit (925) can control the zero-voltage switching of the second input switching element (SW2) based on the voltage of the nb node. Accordingly, by performing zero-voltage switching of the second input switching element (SW2), noise can be reduced.

[0236] Fig. 9 is an example of a circuit diagram of the third dc / dc converter of Fig. 6.

[0237] Referring to the drawings, the third dc / dc converter (913) according to the embodiment of the present disclosure may further include a first switching element (SWa), a second switching element (SWb) that are connected in series with each other, an inductor (Lm) having one end connected to a node between the first switching element (SWa) and the second switching element (SWb), an input capacitor (Cin) disposed between the first switching element (SWa) and a ground terminal (GND), and a switching control unit (933) that outputs a switching control signal to the first switching element (SWa) and the second switching element (SWb).

[0238] Meanwhile, the switching control unit (933), the first switching element (SWa), and the second switching element (SWb) may be provided in one power integrated chip (IC) (1000).

[0239] The power integrated circuit (1000) may include a first switching element (SWa), a second switching element (SWb), an input terminal (VIN), and an output terminal (VOT).

[0240] Meanwhile, the third dc / dc converter (913) according to the embodiment of the present disclosure may further include an output capacitor (Cout) placed between the other end of the inductor (Lm) and the ground terminal (GND).

[0241] Based on the turn-on of the first switching element (SWa) and the turn-off of the second switching element (SWb), a current path can be formed through the input terminal (VIN), the first switching element (SWa), and the inductor (Lm).

[0242] Accordingly, based on the turn-on of the first switching element (SWa) and the turn-off of the second switching element (SWb), a current of Iupper may flow through the input terminal (VIN) and the first switching element (SWa), and a current of ILo may flow through the inductor (Lm). At this time, ILo may correspond to Iupper.

[0243] Next, based on the turn-off of the first switching element (SWa) and the turn-on of the second switching element (SWb), a current path can be formed through the second switching element (SWb) and the inductor (Lm).

[0244] Accordingly, based on the turn-off of the first switching element (SWa) and the turn-on of the second switching element (SWb), a current of Ilower may flow in the second switching element (SWb), and a current of ILo may flow in the inductor (Lm). At this time, ILo may correspond to Ilower.

[0245] By this operation, the third dc / dc converter (913) according to the embodiment of the present disclosure can operate as a buck converter.

[0246] That is, the third dc / dc converter (913) can output a second dc voltage at a lower level than the first dc voltage to the output terminal (VOT) based on the first dc voltage input to the input terminal (VIN) by the operation of the power integrated circuit (1000).

[0247] Meanwhile, the current (Iout) flowing in the output terminal (Vout) of the third dc / dc converter (913) can be detected and fed back to the switching control unit (933) through the feedback terminal (FB) of the power integrated circuit (1000).

[0248] Accordingly, the switching control unit (933) can perform switching control of the first switching element (SWa) or the second switching element (SWb) based on the current (Iout) flowing in the output terminal (Vout).

[0249] FIGS. 10A to 10D are drawings for reference in the description of a power supply device related to the present disclosure.

[0250] FIG. 10a illustrates an example of a power supply device related to the present disclosure.

[0251] Referring to the drawings, a power supply device (1100x) related to the present disclosure includes a power integrated circuit (1000x) having a plurality of terminals, and a plurality of traces (TRax to TRex) electrically connected to each terminal of the power integrated circuit (1000x).

[0252] That is, the power supply device (1100x) related to the present disclosure includes a power integrated circuit (1000x) mounted on a printed circuit board (PCB) and a plurality of traces (TRax to TRex) formed of a metal member such as copper.

[0253] Among the plurality of traces (TRax~TRex), the first trace (TRax) and the second trace (TRbx) are electrically connected to the input terminal of the power integrated circuit (1000x), and capacitors (Cma, CMb) can be mounted on the first trace (TRax) and the second trace (TRbx), respectively.

[0254] Meanwhile, among the plurality of traces (TRax~TRex), the third trace (TRcx) and the fourth trace (TRdx) are electrically connected to the ground terminal or the output terminal of the power integrated circuit (1000x), and capacitors may be mounted on the third trace (TRcx) and the fourth trace (TRdx), respectively.

[0255] Meanwhile, among the plurality of traces (TRax~TRex), the fifth trace (TRex) is electrically connected to the first terminal of the power integrated circuit (1000x), and an inductor (Lm) can be mounted on the fifth trace (TRex).

[0256] As shown in the drawing, when capacitors (Cma, CMb) mounted on the first trace (TRax) and the second trace (TRbx) are placed near the power integrated circuit (1000x), when the power integrated circuit (1000x) is damaged, the possibility of damage to the capacitors (Cma, CMb) increases.

[0257] For example, when the horizontal length of a power integrated circuit (1000x) is Hax, if the distance (Dx) between the capacitor (Cma, CMb) and the power integrated circuit (1000x) is smaller than the horizontal length of the power integrated circuit (1000x), when the power integrated circuit (1000x) is damaged, the possibility of damage to the capacitor (Cma, CMb) increases.

[0258] In particular, when the horizontal length of the power integrated circuit (1000x) is Hax, if the distance between the capacitor (Cma, CMb) and the input terminal of the power integrated circuit (1000x) is smaller than the horizontal length of the power integrated circuit (1000x), when the power integrated circuit (1000x) is damaged, the possibility of damage to the capacitor (Cma, CMb) increases.

[0259] FIG. 10b illustrates another example of a power supply device related to the present disclosure.

[0260] Referring to the drawing, a power supply device (1100y) related to the present disclosure includes a power integrated circuit (1000y) having a plurality of terminals, and a plurality of traces (TRay to TRdy) electrically connected to each terminal of the power integrated circuit (1000y).

[0261] That is, the power supply device (1100y) related to the present disclosure includes a power integrated circuit (1000y) mounted on a printed circuit board (PCB) and a plurality of traces (TRay to TRdy) formed of a metal member such as copper.

[0262] Among the plurality of traces (TRay~TRdy), the first trace (TRay) is electrically connected to an input terminal of a power integrated circuit (1000y), and an input capacitor (Cin) can be mounted on the first trace (TRay).

[0263] Meanwhile, among the plurality of traces (TRay~TRdy), the second trace (TRby) can be electrically connected to the first terminal of the power integrated circuit (1000y).

[0264] Meanwhile, an inductor (Lm) may be placed between the third trace (TRcy) among the plurality of traces (TRay~TRdy) or between the third trace (TRcy) and the second trace (TRby).

[0265] Meanwhile, among the plurality of traces (TRay~TRdy), the fourth trace (TRdy) can be electrically connected to the ground terminal of the power integrated circuit (1000y).

[0266] Meanwhile, an output capacitor (Cout) may be placed on the fourth trace (TRdy) or between the fourth trace (TRdy) and the third trace (TRcy).

[0267] As shown in the drawing, when an input capacitor (Cin) mounted on the first trace (TRay) is placed near a power integrated circuit (1000y), there is a high possibility that damage to the power integrated circuit (1000y) will lead to damage to the input capacitor (Cin).

[0268] For example, when the horizontal length of a power integrated circuit (1000y) is Hay, if the distance (Dy) between the capacitor (Cma, CMb) and the power integrated circuit (1000y) is smaller than the horizontal length of the power integrated circuit (1000y), when the power integrated circuit (1000y) is damaged, the possibility of damage to the capacitor (Cma, CMb) increases.

[0269] In particular, when the horizontal length of the power integrated circuit (1000y) is Hay, if the distance between the capacitor (Cma, CMb) and the input terminal of the power integrated circuit (1000y) is smaller than the horizontal length of the power integrated circuit (1000y), when the power integrated circuit (1000y) is damaged, the possibility of damage to the capacitor (Cma, CMb) increases.

[0270] Figure 10c is a drawing referenced in the description of the operation of the power supply device of Figure 10a or Figure 10b.

[0271] Referring to the drawing, it is preferable that the first switching element (SWa) and the second switching element (SWb) in the power integrated circuit (1000x, 1000y) in the power supply unit (1100x, 1000y) of FIG. 10a or FIG. 10b are complementarily turned on or off.

[0272] Meanwhile, when the first switching element (SWa) and the second switching element (SWb) are turned on together due to an abnormal operation, a current (Iphm) based on the input voltage (Vin) stored in the input capacitor (Cin) flows to the first switching element (SWa) and the second switching element (SWb).

[0273] Due to the short operation of the first switching element (SWa) and the second switching element (SWb), an overcurrent may flow, and thus, there is a high possibility that the first switching element (SWa) and the second switching element (SWb) may be damaged.

[0274] Meanwhile, when an input capacitor (Cin) is placed adjacent to a power integrated circuit (1000x, 1000y), such as a power supply unit (1100x, 1000y) of FIG. 10a or 10b, a short may occur in at least some of the capacitors (C4) among the plurality of capacitors (C1 to C4) in the input capacitor (Cin), causing the Iphn current to flow.

[0275] This increases the likelihood of damage to at least some of the capacitors (C4).

[0276] FIG. 10d is a diagram illustrating damage to a power integrated circuit (1000x, 1000y) and damage to some capacitors (C3, C4) due to the operation of FIG. 10c.

[0277] That is, after the power integrated circuit (1000x, 1000y) is damaged, some of the adjacent capacitors (C3, C4) are damaged.

[0278] Accordingly, in this disclosure, a method is proposed to reduce the possibility of damage to other circuit elements when a power integrated circuit is damaged. This is described with reference to FIG. 11 and below.

[0279] FIG. 11 is a diagram illustrating a power supply device according to one embodiment of the present disclosure.

[0280] Referring to the drawings, a power supply device (1100a) according to one embodiment of the present disclosure includes a power integrated circuit (1000), a first trace (TRa) electrically connected to an input terminal (1002), and at least one capacitor (C1 to C4) electrically connected to the first trace (TRa).

[0281] Meanwhile, the first trace (TRa) has a first region (AR1) to which capacitors (C1 to C4) are electrically connected, and a second region (AR2) arranged to provide a separation between the first region (AR1) and the input terminal (1002).

[0282] The second region (Ar2) is positioned between the first region (AR1) and the input terminal (1002), and it is preferable that no capacitor is positioned therein.

[0283] Meanwhile, it is preferable that the distance (Da) between the capacitor (C3) and the power integrated circuit (1000) be longer than the length (Hc) of the second region (AR2).

[0284] Accordingly, when the power integrated circuit (1000) is damaged, the possibility of damage to other circuit elements can be reduced. In particular, since the capacitors (C1 to C4) and the power integrated circuit (1000) can be sufficiently separated, the possibility of damage to at least one capacitor (C1 to C4) can be reduced. Furthermore, heat transfer from the power integrated circuit (1000) to the capacitor can be reduced.

[0285] Meanwhile, it is preferable that the size of the second area (AR2) be smaller than the size of the first area (AR1).

[0286] For example, it is preferable that the width (Wb) of the second region (AR2) be smaller than the width (Wd) of the first region (AR1). Accordingly, the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0287] Meanwhile, the power integrated circuit (1000) has a first switching element (SWa) and a second switching element (SWb) that are connected in series with each other, as shown in FIG. 9, and outputs a second DC voltage (Vout) to an output terminal (1003) based on a first DC voltage (Vin) input to an input terminal (1002).

[0288] Meanwhile, the power integrated circuit (1000) may further include a switching control unit (933) that outputs a switching control signal to the first switching element (SWa) and the second switching element (SWb), as shown in FIG. 9.

[0289] Meanwhile, the power integrated circuit (1000) can output a second DC voltage (Vout) having a lower level than the first DC voltage (Vin) through the output terminal (1003) based on the switching operation of the first switching element (SWa) or the second switching element (SWb).

[0290] That is, the power integrated circuit (1000) operates as a buck converter and can output a second DC voltage (Vout) that is lower in level than the first DC voltage (Vin). Accordingly, a voltage-stepped DC voltage can be output through the power integrated circuit (1000).

[0291] Meanwhile, the power supply unit (1100a) of FIG. 11 may further include an inductor (Lm) electrically connected to the first terminal (1004) of the power integrated circuit (1000), as shown in FIG. 9. Accordingly, a level-converted DC voltage can be output through the power integrated circuit (1000).

[0292] Meanwhile, the length (Hc) of the second region (AR2) may be longer than the length (Ho) of the input terminal (1002). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0293] Meanwhile, the length (Hc) of the second region (AR2) may be longer than the length (Ha) of the power integrated circuit (1000). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0294] Meanwhile, it is preferable that the distance (Da) between the capacitor (C3) and the power integrated circuit (1000) be greater than the length (Ha) of the power integrated circuit (1000). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated from each other, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0295] Meanwhile, the width (Wb) of the second region (AR2) may be the same as the width (Wa) of the input terminal (1002). In this way, since the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated by the second region (AR2), the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0296] Meanwhile, unlike the drawing, the width (Wb) of the second region (AR2) can also increase as it goes from the input terminal (1002) toward the first region (AR1). In this way, since the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated by the second region (AR2), the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0297] FIG. 12 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0298] Referring to the drawings, a power supply device (1100b) according to another embodiment of the present disclosure includes a power integrated circuit (1000), a first trace (TRab) electrically connected to an input terminal (1002), and at least one capacitor (C1 to C4) electrically connected to the first trace (TRab).

[0299] Meanwhile, the first trace (TRab) has a first region (AR1m) to which capacitors (C1 to C4) are electrically connected, a second region (AR2m) arranged to separate the first region (AR1m) from the input terminal (1002), and a region (AR3m) between the first region (AR1m) and the second region (AR2m) whose width increases as it goes from the second region (AR2m) toward the first region (AR1m).

[0300] The second region (Ar2) and the third region (AR3m) are arranged between the first region (AR1m) and the input terminal (1002), and it is preferable that no capacitor is arranged.

[0301] Meanwhile, it is preferable that the distance (Db) between the capacitor (C3) and the power integrated circuit (1000) be longer than the length (Hcb) of the second region (AR2m). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be sufficiently spaced apart from each other, thereby reducing the possibility of damage to at least one capacitor (C1 to C4).

[0302] Meanwhile, it is preferable that the size of the second area (AR2m) is smaller than the size of the first area (AR1m) or the size of the third area (AR3m).

[0303] For example, it is preferable that the width (Wb) of the second region (AR2m) be smaller than the width (Wd) of the first region (AR1m). In addition, it is preferable that the width (Wb) of the second region (AR2m) be smaller than or equal to the width of the third region (AR3m). Accordingly, when the power integrated circuit (1000) is damaged, the possibility of damage to other circuit elements can be reduced.

[0304] Meanwhile, the length (Hcb) of the second region (AR2m) may be longer than the length (Ho) of the input terminal (1002). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0305] Meanwhile, the length (Hcb) of the second region (AR2m) may be longer than the length (Ha) of the power integrated circuit (1000). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0306] Meanwhile, it is preferable that the distance (Db) between the capacitor (C3) and the power integrated circuit (1000) be greater than the length (Ha) of the power integrated circuit (1000). Accordingly, the capacitors (C1 to C4) and the power integrated circuit (1000) can be separated from each other, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0307] Meanwhile, the width (Wb) of the second region (AR2m) may be equal to the width (Wa) of the input terminal (1002). Accordingly, the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0308] Meanwhile, unlike the drawing, the width (Wb) of the second region (AR2m) may increase from the input terminal (1002) toward the first region (AR1m). Accordingly, the possibility of damage to other circuit elements in the event of damage to the power integrated circuit (1000) can be reduced.

[0309] Meanwhile, it is preferable that the length (Hcc) of the third region (AR3m) be smaller than the length (Hcb) of the second region (AR2m).

[0310] FIG. 13 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0311] Referring to the drawings, a power supply device (1100c) according to another embodiment of the present disclosure is similar to the power supply device (1100a) of FIG. 11, but differs in that it further includes a second trace (TRb) electrically connected to the output terminal (1003). The following description focuses on the differences from FIG. 11.

[0312] That is, a power supply device (1100c) according to another embodiment of the present disclosure includes a power integrated circuit (1000), a first trace (TRa) electrically connected to an input terminal (1002), a second trace (TRb) electrically connected to an output terminal (1003), and at least one capacitor (C1 to C4) electrically connected to the first trace (TRa).

[0313] Meanwhile, the first trace (TRa) has a first region (AR1) to which capacitors (C1 to C4) are electrically connected, and a second region (AR2) arranged to provide a separation between the first region (AR1) and the input terminal (1002).

[0314] The second region (Ar2) is positioned between the first region (AR1) and the input terminal (1002), and it is preferable that no capacitor is positioned therein.

[0315] Meanwhile, the second trace (TRb) has a third region (AR3) and a fourth region (AR4) arranged to provide a gap between the third region (AR3) and the output terminal (1003).

[0316] Meanwhile, in the third region (AR3), an output capacitor (Cout in Fig. 9) and the like can be placed.

[0317] Meanwhile, it is desirable that no capacitor be placed in the fourth region (AR4).

[0318] Meanwhile, it is preferable that the distance between the output capacitor (Cout) and the power integrated circuit (1000) placed in the third region (AR3) be longer than the length (Hc) of the fourth region (AR4).

[0319] Accordingly, the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced. In particular, since the output capacitor (Cout) and the power integrated circuit (1000) can be sufficiently separated, the possibility of damage to the output capacitor (Cout) can be reduced. Furthermore, heat transfer from the power integrated circuit (1000) to the output capacitor (Cout) can be reduced.

[0320] Meanwhile, it is desirable that the size of the fourth area (AR4) be smaller than that of the third area (AR3).

[0321] For example, the width (We) of the fourth region (AR4) may be smaller than the width (Wh) of the third region (AR3). Accordingly, the fourth region (AR4) and the power integrated circuit (1000) can be separated by the third region (AR3).

[0322] Meanwhile, the length (He) of the fourth region (AR4) may be longer than the length (Ho) of the output terminal (1003). Accordingly, the output capacitor (Cout) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0323] Meanwhile, the length (He) of the fourth region (AR4) may be longer than the length (Ha) of the power integrated circuit (1000). Accordingly, the output capacitor (Cout) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0324] Meanwhile, it is preferable that the distance between the output capacitor (Cout) and the power integrated circuit (1000) be greater than the length (Ha) of the power integrated circuit (1000). Accordingly, the output capacitor (Cout) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0325] Meanwhile, the width (We) of the fourth region (AR4) may be the same as the width (Wf) of the output terminal (1003). In this way, the fourth region (AR4) allows the output capacitor (Cout) and the power integrated circuit (1000) to be separated, thereby reducing the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged.

[0326] FIG. 14 is a diagram illustrating a power supply device according to another embodiment of the present disclosure.

[0327] Referring to the drawings, a power supply device (1100d) according to another embodiment of the present disclosure is similar to the power supply device (1100c) of FIG. 13, but differs in the shape of the second trace (TRbb) electrically connected to the output terminal (1003). The following description focuses on the differences from FIG. 13.

[0328] A power supply device (1100d) according to another embodiment of the present disclosure comprises a power integrated circuit (1000), a first trace (TRa) electrically connected to an input terminal (1002), a second trace (TRbb) electrically connected to an output terminal (1003), and at least one capacitor (C1 to C4) electrically connected to the first trace (TRa).

[0329] Meanwhile, the first trace (TRa) has a first region (AR1) to which capacitors (C1 to C4) are electrically connected, and a second region (AR2) arranged to provide a separation between the first region (AR1) and the input terminal (1002).

[0330] The second region (Ar2) is positioned between the first region (AR1) and the input terminal (1002), and it is preferable that no capacitor is positioned therein.

[0331] Meanwhile, the second trace (TRbb) has a third region (AR3n) and a fourth region (AR4n) arranged to provide a separation between the third region (AR3n) and the output terminal (1003).

[0332] Meanwhile, it is desirable that the size of the fourth area (AR4n) be smaller than that of the third area (AR3n).

[0333] For example, the width (We) of the fourth region (AR4n) may be smaller than the width (Wh) of the third region (AR3n). Accordingly, the fourth region (AR4n) and the power integrated circuit (1000) can be separated by the third region (AR3n).

[0334] Meanwhile, the length (He) of the fourth region (AR4n) may be longer than the length (Ha) of the power integrated circuit (1000). Accordingly, the output capacitor (Cout) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0335] Meanwhile, it is preferable that the distance between the output capacitor (Cout) and the power integrated circuit (1000) be greater than the length (Ha) of the power integrated circuit (1000). Accordingly, the output capacitor (Cout) and the power integrated circuit (1000) can be separated, and the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged can be reduced.

[0336] Meanwhile, the width (We) of the fourth region (AR4n) may increase as it moves from the output terminal (1003) toward the third region (AR3n). In this way, the fourth region (AR4n) allows the output capacitor (Cout) and the power integrated circuit (1000) to be separated, thereby reducing the possibility of damage to other circuit elements when the power integrated circuit (1000) is damaged.

[0337] Meanwhile, the first region (AR1) and the second region (AR2) illustrated in FIGS. 11 to 14 are spaced apart from each other on a printed circuit board, and it is preferable that the thickness of the first region (AR1) is greater than the thickness of the second region (AR2) based on the printed circuit board.

[0338] In this way, since the first region (AR1) and the second region (AR2) are spaced apart and have different thicknesses, the high temperature of the power integrated circuit (1000) during operation is not directly transferred to the first region (AR1). Accordingly, heat transfer from the power integrated circuit (1000) to the capacitor can be reduced.

[0339] Figure 15 is a drawing referred to in the descriptions of Figures 11 to 14.

[0340] Referring to the drawings, the first graph (GRa) may represent the temperature of the capacitor (C4) within the first region (AR1) illustrated in FIGS. 11 to 14, and the second graph (GRa) may represent the internal temperature of the power integrated circuit (1000) illustrated in FIGS. 11 to 14.

[0341] When a switching operation of an internal switching element (SWa, SWb) in a power integrated circuit (1000) is performed, the temperature rises, and when the switching element (SWa, SWb) is turned off, the temperature falls.

[0342] Accordingly, as in the second graph (GRa), the temperature can rise and fall periodically.

[0343] Meanwhile, the temperature of the first graph (GRa) rises and falls like the second graph (GRa), but the temperature rises and falls more gradually than that of the second graph (GRa).

[0344] Meanwhile, it is desirable to maintain the temperature of the capacitor (C4) below the first reference temperature (refa).

[0345] Meanwhile, if the temperature of the power integrated circuit (1000) is higher than the second reference temperature (refb), it may be a dangerous zone due to temperature rise.

[0346] Meanwhile, if the temperature of the power integrated circuit (1000) is higher than the third reference temperature (refc), it may be a section in which the possibility of damage to the power integrated circuit (1000) is high.

[0347] Accordingly, in the present disclosure, a method for reducing the possibility of damage to an input capacitor, etc., is applied based on the possibility of damage to a power integrated circuit (1000), as described in FIGS. 11 to 14.

[0348] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the present invention pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. A power integrated circuit having a first switching element and a second switching element that are connected in series with each other, and outputting a second DC voltage to an output terminal based on a first DC voltage input to an input terminal; A first trace electrically connected to the input terminal; At least one capacitor electrically connected to the first trace; The above first trace is, The capacitor has a first region to which it is electrically connected, and a second region arranged to provide a gap between the first region and the input terminal, A power supply device in which the distance between the capacitor and the power integrated circuit is longer than the length of the second region.

2. In paragraph 1, A power supply device in which the length of the second region is longer than the length of the input terminal.

3. In paragraph 1, A power supply device wherein the length of the second region is longer than the length of the power integrated circuit.

4. In paragraph 1, A power supply device wherein the width of the second region is smaller than the width of the first region.

5. In paragraph 1, A power supply device wherein the width of the second region is the same as the width of the input terminal.

6. In paragraph 1, A power supply device wherein the width of the second region increases as it moves from the input terminal toward the first region.

7. In paragraph 1, The above first trace is, A power supply device further comprising a region between the first region and the second region, the region having a width that increases as it moves from the second region toward the first region.

8. In paragraph 1, The above power integrated circuit, A power supply device that outputs the second DC voltage, which is lower in level than the first DC voltage, through the output terminal based on the switching operation of the first switching element or the second switching element.

9. In paragraph 1, A power supply device further comprising an inductor electrically connected to a first terminal of the power integrated circuit.

10. In paragraph 1, further comprising a second trace electrically connected to the output terminal; The second trace above is, A third region, a fourth region arranged to provide a gap between the third region and the output terminal, A power supply device wherein the width of the fourth region is smaller than the width of the third region.

11. In paragraph 10, A power supply device in which the length of the fourth region is longer than the length of the output terminal.

12. In paragraph 10, A power supply device wherein the length of the fourth region is longer than the length of the power integrated circuit.

13. In paragraph 10, A power supply device wherein the width of the fourth region is smaller than the width of the third region.

14. In paragraph 10, A power supply device wherein the width of the fourth region is the same as the width of the output terminal.

15. In paragraph 10, A power supply device in which the width of the fourth region increases as it moves from the output terminal toward the third region.

16. In paragraph 1, A power supply device wherein the thickness of the first region is greater than the thickness of the second region.

17. A power integrated circuit having a first switching element and a second switching element that are connected in series with each other, and outputting a second DC voltage to an output terminal based on a first DC voltage input to an input terminal; A first trace electrically connected to the input terminal; At least one capacitor electrically connected to the first trace; The above first trace is, The capacitor has a first region to which it is electrically connected, and a second region arranged to provide a gap between the first region and the input terminal, A power supply device in which the length of the second region is longer than the length of the power integrated circuit.

18. In paragraph 17, A power supply device wherein the width of the second region is smaller than the width of the first region.

19. Display; A signal processing device that outputs a video signal to the above display; A power supply unit for outputting a driving voltage to the above display; The above power supply unit, A video display device having a power supply device according to any one of claims 1 to 18.

Images