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KR-20260066735-A - Video display device

KR20260066735AKR 20260066735 AKR20260066735 AKR 20260066735AKR-20260066735-A

Abstract

The present disclosure relates to an image display device. An image display device according to one embodiment of the present disclosure comprises a display, a signal processing device that outputs an image signal to the display, a relay element that switches an input AC voltage, a converter connected in parallel to one end of the relay element, a microcomputer that operates based on a DC voltage from the converter, and a switch disposed between the converter and the signal processing device and that operates based on a control signal output from the microcomputer. In a first standby mode, a first level voltage is supplied to the microcomputer based on the off of the relay element, the off of the switch, and the operation of the converter, and in a second standby mode, a second level voltage higher than the first level is supplied to the signal processing device based on the off of the relay element, the operation of the switch, and the operation of the converter. By doing so, power consumption during standby mode can be reduced.

Inventors

  • 백동철

Assignees

  • 엘지전자 주식회사

Dates

Publication Date
20260512
Application Date
20230912

Claims (15)

  1. display; A signal processing device that outputs a video signal to the above-mentioned display; A relay element that switches the input AC voltage; A converter connected in parallel to one end of the above relay element; A microcomputer that operates based on the DC voltage from the above converter; A switch disposed between the converter and the signal processing device and operating based on a control signal output from the microcomputer; comprising In the first standby mode, based on the off of the relay element, the off of the switch, and the operation of the converter, a first level voltage is supplied to the microcomputer, and A video display device that, in a second standby mode, supplies a second level voltage higher than the first level to the signal processing device based on the off of the relay element, the operation of the switch, and the operation of the converter.
  2. In paragraph 1, The above converter is, In the above first standby mode, the above first level voltage is output, and An image display device that outputs a voltage of the second level higher than the first level in the second standby mode.
  3. In paragraph 1, A video display device in which the power consumption in the first standby mode is smaller than the power consumption in the second standby mode.
  4. In paragraph 1, A second converter connected to the other end of the relay element and converting the input AC voltage from the relay element into a DC voltage; A video display device further comprising a third converter that converts the level of the DC voltage from the second converter.
  5. In paragraph 4, The above third converter is, An image display device that supplies a third level voltage higher than the second level to the signal processing device based on the ON of the relay element, the operation of the second converter, and the operation of the third converter in an operation mode after the first standby mode or the second standby mode.
  6. In paragraph 1, A video display device that, when switching from the first standby mode to the second standby mode, turns on the switch to supply a second level voltage higher than the first level to the signal processing device.
  7. In paragraph 1, A video display device that, when switching from the second standby mode to the first standby mode, turns off the switch and supplies the first level voltage to the signal processing device.
  8. In paragraph 1, A voltage stepping unit that steps down the level of the DC voltage from the converter to output the first level of voltage; further comprising In the first standby mode, based on the off of the relay element, the off of the switch, the operation of the converter, and the operation of the voltage step-down unit, the first level voltage is supplied to the microcomputer, and An image display device in which, in the second standby mode, a second level voltage higher than the first level is supplied to the signal processing device based on the off of the relay element, the operation of the switch, and the operation of the converter.
  9. In paragraph 8, The above converter is, In the first standby mode above, a fourth level voltage higher than the first level is output, and A video display device that outputs a voltage of the second level higher than the fourth level in the second standby mode.
  10. In paragraph 8, The above converter is, In the first standby mode above, a fourth level voltage higher than the first level is output, and The above voltage reduction unit is, A video display device that, in the first standby mode, reduces the voltage of the fourth level to the first level.
  11. In Paragraph 9, The above voltage reduction unit is, A video display device that, in the above second standby mode, reduces the voltage of the second level to the first level.
  12. In paragraph 1, The above converter is, A video display device including a flyback converter.
  13. display; A signal processing device that outputs a video signal to the above-mentioned display; A relay element that switches the input AC voltage; A converter connected in parallel to one end of the above relay element; A voltage stepping unit that steps down the level of the DC voltage from the above converter; A microcomputer that operates based on the DC voltage from the above converter; A switch disposed between the converter and the signal processing device and operating based on a control signal output from the microcomputer; comprising In the first standby mode, based on the off of the relay element, the off of the switch, the operation of the converter, and the operation of the voltage step-down unit, a first level voltage is supplied to the microcomputer, and A video display device that, in a second standby mode, supplies a second level voltage higher than the first level to the signal processing device based on the off of the relay element, the operation of the switch, and the operation of the converter.
  14. In Paragraph 13, A second converter connected to the other end of the relay element and converting the input AC voltage from the relay element into a DC voltage; A video display device further comprising a third converter that converts the level of the DC voltage from the second converter.
  15. In Paragraph 14, The above third converter is, An image display device that supplies a third level voltage higher than the second level to the signal processing device based on the ON of the relay element, the operation of the second converter, and the operation of the third converter in an operation mode after the first standby mode or the second standby mode.

Description

Video display device Video display device The present disclosure relates to an image display device, and more specifically, to an image display device capable of reducing power consumption during standby mode. A video display device is a device that displays images. In response to recent demands for increased image resolution and image clarity, it is a cone in which the display resolution or peak brightness of the display within the image display device increases. Meanwhile, as the display resolution or peak brightness increases, the power consumption supplied to the display increases. Meanwhile, various studies are being attempted to reduce power consumption of video display devices in standby mode. FIG. 1 is a drawing illustrating an image display device according to one embodiment of the present disclosure. Figure 2 is an example of an internal block diagram of the image display device of Figure 1. Figure 3 is an example of an internal block diagram of the signal processing device of Figure 2. FIG. 4a is a diagram illustrating a control method of the remote control device of FIG. 2. Figure 4b is an internal block diagram of the remote control device of Figure 2. Figure 5 is an example of an internal block diagram of the display of Figure 2. FIGS. 6a and 6b are drawings referenced in the description of the organic light-emitting panel of FIG. 5. FIG. 7 is an example of an internal block diagram of an image display device according to an embodiment of the present disclosure. Figure 8 is an example of a circuit diagram of the second converter of Figure 7. Figure 9 is an example of a circuit diagram of the third converter of Figure 7. Figure 10 is an example of a circuit diagram of the converter of Figure 7. FIG. 11 is an example of an internal block diagram of an image display device related to the present disclosure. FIGS. 12a to 12e are drawings referenced in the description of FIG. 11. FIG. 13 is an example of an internal block diagram of an image display device according to one embodiment of the present disclosure. FIGS. 14a to 16d are drawings referenced in the description of FIG. 13. FIG. 17 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure. FIG. 18 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure. FIGS. 19a to 19d are drawings referenced in the description of FIG. 18. FIG. 20 is an example of an internal block diagram of an image display device according to another embodiment of the present disclosure. The present disclosure will be described in more detail below with reference to the drawings. The suffixes "module" and "part" for components used in the following description are assigned solely for the ease of drafting this specification and do not inherently confer any particularly significant meaning or role. Accordingly, the terms "module" and "part" may be used interchangeably. FIG. 1 is a drawing illustrating an image display device according to one embodiment of the present disclosure. Referring to the drawing, the image display device (100) may include a display (180). The display resolution of the display (180) is increasing in the trend of 2K, 4K, 8K, 16K, etc., and the peak brightness that can be displayed on the display (180) is also increasing in the trend. Accordingly, the power consumption of the power supplied to the display (180) increases. Meanwhile, the display (180) can be implemented as any one of various panels. For example, the display (180) can be any one of a liquid crystal display panel (LCD panel), an organic light-emitting panel (OLED panel), an inorganic light-emitting panel (LED panel), etc. A liquid crystal display panel may require a separate backlight in addition to the panel for image display. Meanwhile, organic or inorganic light-emitting panels do not require a separate backlight for image display. An image display device (100) according to an embodiment of the present disclosure provides a method for reducing power consumption during standby mode. In particular, it provides a method for reducing power consumption during each of a plurality of standby modes. To this end, an image display device (100) according to one embodiment of the present disclosure includes a display (180), a signal processing device (170 in FIG. 2) that outputs an image signal to the display (180), a relay element (RL in FIG. 13) that switches an input AC voltage (Va), a converter (925 in FIG. 13) that is connected in parallel to one end (n2) of the relay element (RL), a microcomputer (173 in FIG. 13) that operates based on a DC voltage from the converter (925), and a switch (ST in FIG. 13) that is disposed between the converter (925) and the signal processing device (170) and operates based on a control signal output from the microcomputer (173). Meanwhile, an image display device (100) according to one embodiment of the present disclosu