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WO2019212089A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2019212089A1
WO2019212089A1 PCT/KR2018/007543 KR2018007543W WO2019212089A1 WO 2019212089 A1 WO2019212089 A1 WO 2019212089A1 KR 2018007543 W KR2018007543 W KR 2018007543W WO 2019212089 A1 WO2019212089 A1 WO 2019212089A1
Authority
WO
WIPO (PCT)
Prior art keywords
display panel
exciter
vibration
rear surface
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/007543
Other languages
English (en)
Korean (ko)
Inventor
허진하
고영인
박용남
양성은
이덕진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020180076914A external-priority patent/KR102650344B1/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to EP18917060.8A priority Critical patent/EP3748681B1/fr
Priority to US16/965,239 priority patent/US11146873B2/en
Publication of WO2019212089A1 publication Critical patent/WO2019212089A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00

Definitions

  • the present invention relates to a display device having an exciter on a rear surface of a display panel and capable of outputting sound by vibrating the display panel without a separate sound output device.
  • a video wall implemented by arranging display panels in a grid in order to implement a large display device is often used for a large screen or an outdoor advertisement for a large place such as an exhibition hall or an event hall.
  • Video wall is also called multi-vision, and it is possible to realize large screen by using small display panel, which reduces manufacturing cost of display device, and it is easy to disassemble and assemble when it is necessary to temporarily install or change position and arrangement as needed. There is an advantage.
  • materials such as LEDs and OLEDs emit light without a backlight structure of the rear surface, and thus, a curved display panel can be implemented, thereby enabling a curved display device.
  • An object of the present invention is to provide a display device having an exciter on a rear surface of a display panel to output sound by vibrating the display panel without a separate sound output device.
  • An image display on a front surface of the display panel capable of bending deformation;
  • An exciter positioned on a rear surface of the display panel to generate sound by vibrating the display panel;
  • a vibration transmitting unit positioned between the exciter and the display panel and transmitting vibrations of the exciter to the display panel;
  • a control unit controlling the display panel and the exciter; And a frame to which the display panel is fixed.
  • a plurality of chips positioned in a first area of the rear surface of the display panel, wherein the vibration transmitting unit is in contact with a second area of the rear surface of the display unit in which the chip is not formed, and a rear surface is in contact with the exciter. It may include a bracket.
  • the display panel may be bent in a first direction to be fixed to the frame, and the front surface of the vibration bracket may further include a first recess portion extending in a direction perpendicular to the first direction.
  • the front surface of the vibration bracket may include a protrusion contacting the rear surface of the display panel on which the chip is not formed and a second recess recess recessed so as not to directly contact the plurality of chips.
  • the exciter and the vibration bracket may include a plurality, and the vibration bracket may further include a first wing part positioned in the second area and extending in the direction of the neighboring vibration bracket.
  • the vibration bracket may further include a second wing portion extending in a line symmetry or point symmetry direction to the first wing portion.
  • the first wing part may be connected to a first wing part of a neighboring vibration bracket.
  • the display device may further include a rear cover coupled to the rear surface of the display panel and including an opening formed at a position corresponding to the vibration bracket.
  • It may further include a plurality of heat dissipation holes formed on the rear surface of the rear cover.
  • the rear cover may be made of a flexible material.
  • the vibration transmitting unit may include a rubber magnet coupled to a rear surface of the display panel; And a back plate coupled to the rear of the rubber magnet by the magnetic force of the rubber magnet, the exciter may be fixed to the back plate.
  • the back plate may further include aluminum or carbon fiber.
  • the touch sensor may further include a touch sensor positioned on a front surface of the display panel, and the controller may drive the exciter when a touch input is detected by the touch sensor.
  • the display panel may include a plurality of exciters and vibration transmitting units, and the controller may individually drive the plurality of exciters to output respective sounds.
  • the display device of the present invention has an advantage that the display panel itself may vibrate and output sound by using a display panel capable of bending deformation, and thus, there is no need to provide a separate sound output device.
  • the sound is output from the side and the direction of the sound is inconsistent with the direction of the image.
  • the direction in which the image is output and the direction of the sound have the advantage.
  • the sound of a plurality of channels can be output.
  • the effect obtained in the present invention is not limited to the above-mentioned effects, and other effects not mentioned above belong to the present invention from the following description.
  • FIG. 1 is a block diagram showing a display device of the present invention.
  • FIG. 2 is a view showing a display device of the present invention.
  • FIG. 3A illustrates a display panel and an exciter of the present invention.
  • 3B is a diagram showing a first embodiment of the display device of the present invention.
  • FIG. 4 is a view showing a second embodiment of the display device of the present invention.
  • FIG. 5 is a cross-sectional view of the display device of the present invention.
  • FIG. 6 is a graph showing the performance according to the shape of the vibration bracket of the display device of the present invention.
  • FIG. 7 is a diagram showing a third embodiment of the display device of the present invention.
  • FIG. 1 is a block diagram illustrating a display apparatus 100 related to the present invention.
  • the display apparatus 100 may include a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a controller 180, and a power supply unit 190. ) May be included.
  • the components illustrated in FIG. 1 are not essential to implementing the display apparatus, and thus the display apparatus 100 described herein may have more or fewer components than those listed above.
  • the wireless communication unit 110 of the components, between the display device 100 and the wireless communication system, between the display device 100 and another display device 100, or the display device 100 and the external server It may include one or more modules that enable wireless communication therebetween.
  • the wireless communication unit 110 may include one or more modules for connecting the display apparatus 100 to one or more networks.
  • the wireless communication unit 110 may include at least one of the broadcast receiving module 111, the mobile communication module 112, the wireless internet module 113, the short range communication module 114, and the location information module 115. .
  • the input unit 120 may include a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, an audio input unit, or a user input unit 123 for receiving information from a user. , Touch keys, mechanical keys, and the like.
  • the voice data or the image data collected by the input unit 120 may be analyzed and processed as a control command of the user.
  • the sensing unit 140 may include one or more sensors for sensing at least one of information in the display device, surrounding environment information surrounding the display device, and user information.
  • the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity.
  • Optical sensors e.g. cameras 121), microphones (see 122), battery gauges, environmental sensors (e.g.
  • the display device 100 disclosed herein may utilize a combination of information sensed by at least two or more of these sensors.
  • the output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154. can do.
  • the display unit 151 forms a layer structure with or is integrally formed with the touch sensor, thereby implementing a touch screen.
  • the touch screen may function as a user input unit 123 that provides an input interface between the display apparatus 100 and the user, and may also provide an output interface between the display apparatus 100 and the user.
  • the interface unit 160 serves as a path to various types of external devices connected to the display apparatus 100.
  • the interface unit 160 connects a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input / output (I / O) port, a video input / output (I / O) port, and an earphone port.
  • I / O audio input / output
  • I / O video input / output
  • earphone port an earphone port
  • the memory 170 stores data supporting various functions of the display apparatus 100.
  • the memory 170 may store a plurality of application programs or applications that are driven by the display apparatus 100, data for operating the display apparatus 100, and instructions. At least some of these applications may be downloaded from an external server through wireless communication.
  • at least some of these application programs may exist on the display device 100 from the time of shipment for basic functions of the display device 100 (for example, a call forwarding, a calling function, a message receiving, and a calling function).
  • the application program may be stored in the memory 170 and installed on the display apparatus 100 to be driven by the controller 180 to perform an operation (or function) of the display apparatus.
  • the controller 180 In addition to the operation related to the application program, the controller 180 typically controls the overall operation of the display apparatus 100.
  • the controller 180 may provide or process information or a function appropriate to a user by processing signals, data, information, and the like, which are input or output through the above-described components, or by driving an application program stored in the memory 170.
  • controller 180 may control at least some of the components described with reference to FIG. 1 in order to drive an application program stored in the memory 170. In addition, the controller 180 may operate by combining at least two or more of the components included in the display apparatus 100 to drive the application program.
  • the power supply unit 190 receives power from an external power source or an internal power source under the control of the controller 180 to supply power to each component included in the display apparatus 100.
  • the power supply unit 190 includes a battery, which may be a built-in battery or a replaceable battery.
  • At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of the display apparatus according to various embodiments described below.
  • the operation, control, or control method of the display apparatus may be implemented on the display apparatus by driving at least one application program stored in the memory 170.
  • FIG. 2 is a diagram illustrating a display device 100 of the present invention.
  • a plurality of display panels 210 for outputting an image may be attached to the frame 260 to implement a large screen.
  • the display apparatus 100 may be bent such as LEDs (Light Emitting Diodes) or OLEDs (Organic Light Emitting Diodes) to implement curved screens. Can be used.
  • the backlight unit is a device that supplies the light source and the light supplied from the light source to the liquid crystal that is uniformly positioned on the front surface. As the backlight unit becomes thinner and thinner, a thin LCD can be realized, but it is difficult to implement the backlight unit with a curved material, and when the backlight unit is bent, it is difficult to supply uniform light to the liquid crystal, thereby changing the brightness of the screen.
  • each of the elements constituting the pixel emits its own light, and thus the LED or OLED can be bent without using a backlight unit.
  • the display panel 210 may be bent using LEDs or OLEDs because the brightness of each device does not affect its brightness even if the positional relationship with neighboring devices is changed.
  • OLED Organic Light Emitting Diodes
  • display panel 210 appeared in mid-2010 and is rapidly replacing LCD in small and medium-sized display market.
  • OLED is a display made using a self-luminous phenomenon that emits light when a current flows through a fluorescent organic compound. Since the image quality is faster than LCD, virtually no afterimages appear when a video is realized.
  • OLED uses three phosphor organic compounds with red light, green, and blue, which have self-luminous functions, and electrons and positively charged particles injected from cathode and anode As it is a light-emitting display product using the phenomenon that it combines in organic materials and emits light by itself, it does not need a backlight to reduce color.
  • the LED (Light Emitting Diode) display panel 210 is a technology that uses one LED element as one pixel, and can reduce the size of the LED element compared to the prior art, thereby realizing a curved display panel 210.
  • a device called an LED TV uses LED as a light source of a backlight unit for supplying light to the LCD, but the LED itself did not form a screen.
  • Each LED is driven independently by red, green, and blue pixels, and emits light by itself.
  • the contrast ratio is higher and it is advantageous in terms of response speed and viewing angle. It also has excellent brightness and marginal resolution in terms of lifetime. Its chemical and mechanical stability is superior to OLED, so it can be expected to have a long life, and it is also excellent in brightness and power consumption.
  • Each display panel 210 may be bent, and the display panel 210 may be bent to be fixed to the curved frame 260 to implement the curved display device 100.
  • the curved display device 100 may be attached by attaching the display panel 210 to a frame 260 having a lattice shape.
  • the display panel 210 and the frame 260 may be coupled to each other using a fastener such as a screw, or may be attached using a magnetic force of a magnet.
  • the display panel 210 By vibrating the flexible display panel 210 of the present invention, the display panel 210 itself can be used as the sound output unit. Sound may be output from the display panel 210 by attaching an exciter 230 that applies vibration to a rear surface of the display panel 210 according to an acoustic signal.
  • the exciter 230 is a device for generating a vibration in the diaphragm of the speaker, the present invention may omit the diaphragm and vibrate the display panel 210 using the exciter 230 to output sound.
  • the display panel 210 of the present exemplary embodiment is an LED panel, and each pixel may be implemented by the LED and operate as the display panel 210 according to a color output by the LED according to an image signal.
  • the LED display panel 210 may have a plurality of chips 215 mounted thereon to control the LEDs.
  • a portion in which the chip 215 is mounted may be referred to as a first region 211, and a region in which the chip 215 is not mounted may be referred to as a second region 212, and the first region 211 may have a checkerboard shape.
  • the second region 212 may be disposed in a lattice form between the first regions 211.
  • the display panel 210 has a rear surface including three first regions 211 at three lower portions and a second region 212 passing therebetween, but is not limited thereto. It doesn't work.
  • a rear cover may be further included to protect the chip 215 of the display panel 210.
  • the cover When the display panel 210 is bent, the cover may be deformed accordingly, so that a deformable material such as silicone or rubber may be used. However, a plurality of heat dissipation holes 226 may be formed on the rear surface so that heat may be released.
  • the exciter 230 attached to the rear surface of the display panel 210 to vibrate the display panel 210 includes a magnet and a coil disposed adjacent to the magnet, and the magnet is formed when a current is applied to the coil. In the magnetic field to form a magnetic field in the opposite direction to the magnetic field to move the magnet. Alternatively, the coil moves in accordance with Fleming's left hand law in the magnetic field formed by the magnet. Using this principle, the exciter 230 may generate vibrations and transmit the vibrations to the flexible display panel 210 so that the display panel 210 may vibrate and output sound.
  • the flexible display panel 210 replaces the conventional diaphragm of the sound output unit.
  • the chip 215 may be attached to the second region 212 which is not mounted on the back of the display panel 210.
  • the durability of the chip 215 may be affected, and vibration of the exciter 230 may be lost.
  • a vibration bracket for transmitting the vibration of the exciter 230 to the display panel 210 may be further included.
  • the exciter 230 and the vibration bracket 240 may be integrally attached, or the vibration bracket 240 may be injection molded and attached with an adhesive. Since the thickness of the exciter 230 is thicker than the rear cover, an opening 225 may be formed in the rear cover corresponding to the size of the exciter 230.
  • FIG. 3B is a view showing another embodiment of the display apparatus 100 of the present invention. As shown in FIG. 3B, only one exciter 230 may be provided in one display panel 210, and is shown in FIG. 3A. As shown, a plurality may be provided.
  • the exciter 230 having a large output is used, and the size of the exciter 230 is increased, which may be difficult to arrange in the limited second region 212.
  • the size of the vibration bracket 240 also increases, and it is difficult for the vibration bracket 240 to align the second region 212 by aligning the first region 211 on which the chip 215 is formed.
  • the vibrations between two or more exciters 230 must match exactly, but noise may occur because there is a distance between the exciters 230. You need to tune to match.
  • the vibration bracket 240 may have a rectangular shape as shown in FIG. 3B or a circular shape as shown in FIG. 3A.
  • 4 is a view showing an example of the front surface of the vibration bracket 240 of the present invention
  • Figure 4 (a) is a vibration bracket 240 of Figure 3a
  • Figure 4 (b) is a vibration bracket 240 of Figure 3b
  • C) is a modification of (a).
  • the exciter 230 is seated on the rear surface 244 of the vibration bracket 240.
  • the front surface of the vibration bracket 240 includes a contact portion 241 which contacts the second area 212 where the chip 215 on the rear surface of the display panel 210 is not formed, and the chip 215 in the first area 211. It may include a first recessed portion 242 recessed recessed so as not to contact with.
  • the first recess 242 is formed at a position corresponding to the first region 211 and as shown in FIG. 3A, the first region 211 disposed in a lattice shape and a second cross disposed between them.
  • the contact portion 241 and the first recess 242 are positioned corresponding to the shape of the region.
  • the vibrating bracket 240 may be placed at the cross-crossing point of the second region 212 to make the contact area 241 as wide as possible.
  • a second recess 243 may be formed in a portion of the contact portion 241.
  • the second recess 243 displays grooves formed in advance so that the vibration bracket 240 can be deformed to correspond to the bending of the display panel 210.
  • the second recess 243 extending in parallel with the short side of the display panel 210 may be formed.
  • the second recess 243 is located in the second region 212, and thus, the second recess 243 may be shallower than the first recess 242.
  • FIG. 4 (c) shows that when using a plurality of exciters 230, interference may occur between neighboring exciters 230, thereby forming a bar extending from the vibration bracket 240 to form a neighbor. Interference between the exciter 230 can be reduced.
  • the wing may extend only one side toward the neighboring vibration bracket 240, but the vibration is stably transmitted only when it is symmetrically shaped, and may extend in a cross shape as shown in FIG.
  • FIG. 5 is a cross-sectional view of the display apparatus 100 of the present invention.
  • a rear cover may be further included to cover the chip 215 disposed on the rear surface of the display panel 210.
  • the second region 212 of the display panel 210 may also be positioned at the end portion such that the ends of the rear cover are coupled to each other.
  • a fastening magnet 250 may be further provided between the rear surface and the display panel 210.
  • the display panel 210 may be coupled to the metal frame 260 using the magnetism of the fastening magnet 250.
  • a plurality of fastening magnets 250 may be provided along the circumference of the display panel 210.
  • the front surface of the rear cover 220 may further include a magnet seating portion 221 corresponding to the shape of the fastening magnet 250.
  • the thickness of the exciter 230 may form an opening for the exciter 230 in the back cover of the bar thicker than the thickness of the back cover, as shown in FIG.
  • the vibration bracket 240 positioned at the front of the exciter 230 may be coupled to the rear surface of the display panel 210 by using a member having an adhesive component such as a tape.
  • FIG. 6 is a graph showing the performance according to the shape of the vibration bracket 240 of the display device 100 of the present invention. As illustrated in FIG. 6, various detective vibration brackets 240 may be used. Ref. 1 and case 4 are vibration brackets for one exciter 230, and Ref. 2, case 1 to case 3 are vibration brackets 240 for two exciters 230. In the case of using one vibration bracket 240, the vibration performance is relatively good at most frequencies as a whole, but the size is small.
  • the wing unit may further include a wing portion extended along the second area 212 at a portion where the exciter 230 is seated.
  • the rear surface of the wing is not in direct contact with the exciter 230, but may transmit vibration to the display panel 210 on the front surface, thereby transmitting more vibration.
  • the size of the vibration bracket 240 is increased, and thus, when the display panel 210 is bent and coupled to the frame 260, the vibration bracket 240 is not attached to the display panel 210. As in case 3, it is also possible to use a vibration bracket 240 without the wing.
  • the display panel 210 of the present exemplary embodiment includes the OLED 210, and the OLED 210 has no chip 215 on the back thereof, so that the constraint of coupling the exciter 230 to the back of the display panel 210 is small.
  • the back plate 246 may be combined without directly coupling the exciter 230 to the rear surface of the OLED 210.
  • the back plate 246 is a plate-shaped member capable of bending deformation, and supports the OLED 210 at the back of the OLED 210.
  • the back plate 246 may use a material such as aluminum or carbon fiber reinforced plastic, and the aluminum or carbon fiber reinforced plastic may have a greater rigidity than the OLED 210, thereby preventing the OLED 210 from being damaged or distorted.
  • the exciter 230 may be coupled to the rear panel through an adhesive tape or a fastening member, and the vibration of the exciter 230 may be transmitted to the display panel 210 through the rear panel. However, when the exciter 230 is driven for a long time, heat generated from the exciter 230 may be transferred to the display panel 210. In this case, a local temperature rise (hot spot occurrence) occurs in the display panel 210, which may cause distortion or color difference of the screen output from the display panel 210.
  • a local temperature rise hot spot occurrence
  • hot spots may be removed by diffusing heat generated from the exciter 230.
  • the back plate 246 includes a carbon fiber reinforced plastic, heat generated by the display panel 210 may be blocked to prevent hot spots from occurring.
  • a rubber magnet 245 may be attached between the display panel 210 and the rear plate 246. Since the rubber magnet 245 may use a soft material such as the OLED 210, the rubber magnet 245 may be modified as the display panel 210 is deformed.
  • the rear plate 246 and the rubber magnet 245 are magnetically coupled to each other so that the rubber magnet 245 and the rear plate 246 are not separated in the coupling direction (the direction perpendicular to the plane) but slip in the direction parallel to the plane.
  • the display panel 210 may be bent while sliding between the rear plate 246 and the rubber magnet 245.
  • the rubber magnet 245 and the rear plate 246 are slightly displaced as shown in FIG. 7 to prevent the display panel 210 from being damaged.
  • a touch sensor may be further provided on the front surface of the display panel 210.
  • the touch sensor may receive a user's input and, when the user touches it, may provide a corresponding haptic vibration by driving the exciter. For example, when a user hits a book output on the display panel 210 by hand, the vibration may be transmitted to the user's hand, and the sound and vibration may be transmitted to the user as if the user hits a drum.
  • the display apparatus of the present invention may be implemented by arranging a plurality of display panels in various ways, and each of the plurality of touch panels may include an exciter, and outputs sound through the exciter. Through this can provide a stereo sound having a plurality of channels.
  • the display device of the present invention has an advantage that the display panel itself may vibrate and output sound by using a display panel capable of bending deformation, and thus, there is no need to provide a separate sound output device.
  • the sound is output from the side and the direction of the sound is inconsistent with the direction of the image.
  • the direction in which the image is output and the direction of the sound have the advantage.
  • the sound of a plurality of channels can be output.

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Abstract

La présente invention concerne un dispositif d'affichage comprenant : un panneau d'affichage qui délivre une image sur une surface avant de celui-ci et qui est pliable ; un excitateur, positionné sur une surface arrière du panneau d'affichage, pour générer un son par vibration du panneau d'affichage ; une unité de transmission de vibrations, positionnée entre l'excitateur et le panneau d'affichage, pour transmettre des vibrations de l'excitateur au panneau d'affichage ; une unité de commande pour commander le panneau d'affichage et l'excitateur ; et un cadre auquel le panneau d'affichage est fixé. Lorsque le dispositif d'affichage utilise le panneau d'affichage pliable, de telle sorte que le panneau d'affichage lui-même peut vibrer pour émettre un son, le dispositif d'affichage a un avantage en ce qu'il n'est pas nécessaire de disposer d'un dispositif d'émission sonore séparé.
PCT/KR2018/007543 2018-05-03 2018-07-04 Dispositif d'affichage Ceased WO2019212089A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18917060.8A EP3748681B1 (fr) 2018-05-03 2018-07-04 Dispositif d'affichage
US16/965,239 US11146873B2 (en) 2018-05-03 2018-07-04 Display device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2018-0051300 2018-05-03
KR20180051300 2018-05-03
KR1020180076914A KR102650344B1 (ko) 2018-05-03 2018-07-03 디스플레이 장치
KR10-2018-0076914 2018-07-03

Publications (1)

Publication Number Publication Date
WO2019212089A1 true WO2019212089A1 (fr) 2019-11-07

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN111288369A (zh) * 2020-02-27 2020-06-16 东莞精旺电子有限公司 智能表面汽车内饰触控面板csp led光源处理技术
JPWO2022075168A1 (fr) * 2020-10-07 2022-04-14
WO2023179446A1 (fr) * 2022-03-21 2023-09-28 海信视像科技股份有限公司 Dispositif d'affichage

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JPWO2022075168A1 (fr) * 2020-10-07 2022-04-14
JP7740252B2 (ja) 2020-10-07 2025-09-17 ソニーグループ株式会社 出力装置
US12474877B2 (en) 2020-10-07 2025-11-18 Sony Group Corporation Output apparatus
WO2023179446A1 (fr) * 2022-03-21 2023-09-28 海信视像科技股份有限公司 Dispositif d'affichage
US12523901B2 (en) 2022-03-21 2026-01-13 Hisense Visual Technology Co., Ltd. Display device

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