Splicing display device and terminal equipment

Abstract

The embodiment of the invention provides a tiled display device and terminal equipment. In the splicing display device, a second display module is arranged at a splicing seam between two adjacent first display modules. In one embodiment, at least two first light emitting units of the second display module are configured to emit light at a preset frequency. In another embodiment, the infrared light emitting assembly of the second display module is configured to emit infrared light. In another embodiment, the tiled display device comprises at least one frame, a transparent cover plate and at least two infrared light emitting assemblies, and the infrared light emitting assemblies are arranged between the frame and the transparent cover plate. The terminal equipment comprises a remote controller and a tiled display device, a camera of the remote controller is configured to shoot the tiled display device, obtain position information of the first light-emitting unit or the infrared light-emitting assembly and calculate pointing position coordinates, and the tiled display device displays a cursor according to the pointing position coordinates. According to the invention, the precision of remote interaction is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a splicing display device and terminal equipment. Background Technology

[0002] Video wall displays are typically composed of multiple LCD panels joined together to provide ultra-large display screens. However, existing large-size video wall displays have many limitations in terms of remote interaction.

[0003] Currently, remote interaction for large-size splicing display devices mainly relies on technologies such as voice control or gesture recognition. Voice control requires users to operate the display device using specific voice commands; however, the accuracy of voice command recognition is significantly affected by environmental noise, and users need to memorize a large number of voice commands, resulting in a long response time. While gesture recognition technology enables contactless operation, the recognition range of gestures is limited, and different users have different gesture habits, leading to low recognition accuracy and an inability to achieve precise location pointing. These interaction methods cannot achieve the same location pointing operation as touch-screen display devices; users find it difficult to accurately specify a particular location on the display screen, resulting in poor interaction precision.

[0004] For video wall displays composed of multiple liquid crystal display panels, there are seams between adjacent panels. To compensate for the display gaps at these seams, some video wall displays include a direct-display component. This component displays an image that matches the image on the liquid crystal display panel, thus achieving continuous image display. However, in existing video wall displays, the direct-display component is only used to display the image, failing to fully utilize its functional value and resulting in low hardware resource utilization.

[0005] Furthermore, existing large-size video wall displays typically require additional host devices to enable interactive functions. Operations such as highlighting pointers, selecting, marking, and drawing lines all need to be performed on the host device. This interactive mode requires additional hardware, increasing system complexity and cost. Simultaneously, users need to switch between the video wall display device and the host device, resulting in low interaction efficiency and hindering the widespread application of video wall displays.

[0006] Therefore, it is necessary to propose a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this application is to provide a splicing display device and terminal equipment, which aims to solve the technical problem of poor remote interaction accuracy of existing large-size splicing display devices.

[0008] This application provides a splicing display device, which includes at least two first display modules and at least one second display module. The at least two first display modules are spliced ​​together as one unit, and at least one second display module is disposed at the splicing seam between two adjacent first display modules. The at least one second display module includes a plurality of light-emitting units, and the plurality of light-emitting units include at least two first light-emitting units and a plurality of second light-emitting units. The first light-emitting units are configured to emit light at a preset frequency, and the second light-emitting units are configured to emit light at multiple frequencies.

[0009] In the above-mentioned splicing display device, at least one second display module includes a display part and a peripheral part. The display part is located in the display area of ​​the splicing display device, and the peripheral part is located in the peripheral area of ​​the splicing display device. The second light-emitting unit is disposed in the display part; the first light-emitting unit is disposed in the peripheral part; or a portion of the first light-emitting unit is disposed in the peripheral part, and another portion is disposed in the display part.

[0010] In the above-mentioned splicing display device, the display unit is configured to display an image that matches the image of the first display module, and the peripheral part is configured to display a solid color image that corresponds to the color of the peripheral area of ​​the splicing display device; when the first light-emitting unit is disposed in the peripheral part, the color of the light emitted by the first light-emitting unit is the color of the solid color image.

[0011] In the above-mentioned splicing display device, the diameter of the smallest circumscribed circle of the light-emitting area formed by at least two of the first light-emitting units is greater than or equal to 2 centimeters.

[0012] In the above-mentioned splicing display device, the preset frequency is greater than 700 Hz.

[0013] In the above-mentioned splicing display device, the splicing display device further includes a controller, which is configured to control at least two of the first light-emitting units to emit light at the preset frequency when receiving an activation command, and to control at least two of the first light-emitting units to stop emitting light at the preset frequency when receiving a shutdown command.

[0014] This application also provides a terminal device, which includes a remote controller and the above-mentioned splicing display device. The remote controller includes a camera, which is configured to capture images of the splicing display device and acquire position information of at least two of the first light-emitting units, calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the splicing display device. The splicing display device is configured to display a cursor based on the pointing position coordinates.

[0015] In the aforementioned terminal device, the camera is configured to filter out light signals of non-preset frequencies emitted by the splicing display device, while retaining light signals of the preset frequency.

[0016] In the aforementioned terminal device, the remote control further includes a processor configured to remove the light signal emitted by the second light-emitting unit at the preset frequency from the image captured by the camera.

[0017] This application also provides a splicing display device, which includes at least two first display modules and at least one second display module. The at least two first display modules are spliced ​​together as one unit, and at least one second display module is disposed at the seam between two adjacent first display modules. The at least one second display module includes multiple light-emitting units and at least two infrared light-emitting components, which are configured to emit infrared light.

[0018] In the above-mentioned splicing display device, at least one of the second display modules includes a display section and a peripheral section. The display section is located in the display area of ​​the splicing display device, and the peripheral section is located in the peripheral area of ​​the splicing display device. The light-emitting unit is disposed in the display section; at least two infrared light-emitting components are disposed in the peripheral section; or at least two infrared light-emitting components are disposed in the display section.

[0019] In the above-mentioned splicing display device, when at least two of the infrared light emitting components are disposed in the peripheral portion, the infrared light emitting components are disposed at the end of the peripheral portion away from the display portion.

[0020] In the above-mentioned splicing display device, when at least two of the infrared light-emitting components are disposed in the display unit, the infrared light-emitting components are disposed between the plurality of light-emitting units.

[0021] This application also provides a splicing display device, which includes at least two first display modules, at least one frame, at least one transparent cover plate, and at least two infrared light emitting components. The at least two first display modules are spliced ​​together as one unit. The edge of the first display module is disposed on the frame. The transparent cover plate is disposed on the first display module and the frame. The infrared light emitting components are disposed between the frame and the transparent cover plate. The infrared light emitting components are configured to emit infrared light.

[0022] In the above-mentioned splicing display device, the splicing display device further includes optical adhesive, which is disposed on the surface of the first display module and the surface of the frame, the transparent cover is disposed on the optical adhesive, and the optical adhesive is disposed on the surface of the frame at a position other than the position where the infrared light emitting component is located.

[0023] This application also provides a terminal device, which includes a remote control and the aforementioned splicing display device. The remote control includes a camera, which includes an infrared light filter film configured to transmit infrared light. The camera is configured to capture images of the splicing display device and acquire position information of at least two of the infrared light-emitting components, calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the splicing display device. The splicing display device is configured to display a cursor based on the pointing position coordinates.

[0024] The splicing display device and terminal equipment provided in this application, by setting at least two first light-emitting units configured to emit light at a preset frequency in the second display module, enables a remote control equipped with an event vision sensor to capture the position information of these first light-emitting units emitting light at the preset frequency. The event vision sensor has high sensitivity to changes in light intensity and can accurately identify the periodic changes in light intensity generated by the first light-emitting units emitting light at the preset frequency, thereby obtaining the precise position of these first light-emitting units on the splicing display device. Based on the obtained position information of at least two first light-emitting units, the remote control determines the spatial position relationship of the remote control relative to the splicing display device through geometric calculations, and then calculates the coordinates of the remote control's pointing position on the splicing display device. After receiving the pointing position coordinates, the splicing display device displays a cursor at the corresponding position, thereby realizing the remote position pointing function. This technical solution reuses the original second display module in the splicing display device, without adding additional hardware components, improving the utilization rate of hardware resources and reducing implementation costs. Meanwhile, the location recognition method based on event vision sensors is unaffected by changes in ambient light and can work stably under various lighting conditions. Compared with voice control and gesture recognition technologies, it has higher recognition accuracy and faster response speed, thus solving the technical problem of poor remote interaction accuracy of existing large-size splicing display devices.

[0025] The splicing display device and terminal equipment provided in this application can further enable a remote control equipped with an infrared light-emitting film to capture the position information of these infrared light-emitting components by setting at least two infrared light-emitting components in the second display module or between the frame and the transparent cover. Since infrared light is outside the visible light range, the infrared light emitted by the infrared light-emitting components will not interfere with the display screen of the splicing display device, ensuring the quality of the display screen. The remote control's camera filters out visible light through the infrared light-emitting film, receiving only infrared light signals, thereby accurately acquiring the position information of the infrared light-emitting components and avoiding position recognition errors caused by visible light interference. The remote control calculates the pointing position coordinates based on the acquired position information of at least two infrared light-emitting components and sends the pointing position coordinates to the splicing display device. The splicing display device displays a cursor based on the pointing position coordinates, realizing the remote position pointing function. This technical solution, by using infrared light as a position identification signal, avoids the influence of visible light on the display screen, while improving the anti-interference capability of position recognition, further enhancing the accuracy and stability of remote interaction. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the splicing display device provided in the first embodiment of this application.

[0027] Figure 2 for Figure 1 A schematic diagram of a first configuration in the first region Q1 shown, in which at least two first light-emitting units are configured to emit light at a preset frequency.

[0028] Figure 3 for Figure 1 A schematic diagram of a second configuration in the first region Q1 shown, in which at least two first light-emitting units are configured to emit light at a preset frequency.

[0029] Figure 4 This is a schematic diagram of the splicing display device provided in the first embodiment of this application before and after removing random preset frequency light signals.

[0030] Figure 5 This is a schematic diagram of the splicing display device provided in the second embodiment of this application.

[0031] Figure 6 for Figure 5 A schematic diagram showing the arrangement of the infrared light-emitting component in the second region Q2.

[0032] Figure 7 for Figure 5 A schematic diagram showing the arrangement of the infrared light-emitting component in the third region Q3.

[0033] Figure 8This is a schematic diagram of the splicing display device provided in the third embodiment of this application.

[0034] Figure 9 yes Figure 8 A schematic diagram of the B-B' section of the splicing display device shown. Detailed Implementation

[0035] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0036] The terms “first,” “second,” and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms “multiple,” and similar words mean two or more, unless otherwise expressly specified.

[0037] The technical solutions of different embodiments of this application can be combined with each other.

[0038] The embodiments of this application provide a splicing display device DA and a terminal device. By reusing the second display module DP2 in the splicing display device DA, a remote position pointing function is realized, which improves the accuracy of remote interaction and improves the utilization rate of hardware resources.

[0039] First Embodiment The splicing display device DA provided in the embodiments of this application includes at least two first display modules DP1 and at least one second display module DP2. The first display module DP1 may be, for example, a liquid crystal display panel, and the second display module DP2 may be, for example, a Mini-LED direct-view panel or a Micro-LED direct-view panel. Typical splicing display devices DA are dual-segment splicing display devices and triple-segment splicing display devices. A dual-segment splicing display device includes two first display modules DP1, such as... Figure 1 As shown, the three-panel splicing display device includes three first display modules DP1. Taking the two-panel splicing display device as an example, at least two first display modules DP1 are spliced ​​together as one unit, and at least one second display module DP2 is disposed at the seam between two adjacent first display modules DP1.

[0040] The splicing display device DA also includes a timing controller and a source driver chip. The first display module DP1 includes at least one gate driving circuit, multiple gate lines, multiple data lines, and multiple pixel units. The timing controller is configured to receive externally input image data and control signals, and convert the image data and control signals into timing signals required by the gate driving circuit and the source driver chip. The gate driving circuit is configured to sequentially provide scan signals to the multiple gate lines according to the timing signals provided by the timing controller. The source driver chip is configured to provide data voltage signals to the multiple data lines according to the timing signals and image data provided by the timing controller. The multiple gate lines extend along a first direction, and the multiple data lines extend along a second direction, intersecting the first and second directions. The multiple pixel units are respectively disposed at the intersections of the multiple gate lines and the multiple data lines. Each pixel unit includes a thin-film transistor and a liquid crystal capacitor. The gate of the thin-film transistor is connected to the gate line, the source of the thin-film transistor is connected to the data line, the drain of the thin-film transistor is connected to one end of the liquid crystal capacitor, and the other end of the liquid crystal capacitor is connected to a common electrode. When the scan signal on the gate line turns on the thin-film transistor, the data voltage signal on the data line is written into the liquid crystal capacitor through the thin-film transistor, thereby controlling the voltage across the liquid crystal capacitor, and thus controlling the deflection angle of the liquid crystal molecules to achieve grayscale display of the pixel unit.

[0041] At least one second display module DP2 is elongated, comprising a display section DP2-2 and a peripheral section DP2-1. The display section DP2-2 is located in the display area AA of the splicing display device DA, and the peripheral section DP2-1 is located in the peripheral area PA of the splicing display device DA. The peripheral section DP2-1 is located at both ends of the display section DP2-2, that is, the peripheral section DP2-1 includes a first peripheral section located at the first end of the display section DP2-2 and a second peripheral section located at the second end of the display section DP2-2, with the first and second ends positioned opposite each other. The display section DP2-2 is configured to display an image that matches the image of the first display module DP1, and the peripheral section DP2-1 is configured to display a solid color image corresponding to the color of the peripheral area PA of the splicing display device DA, or the peripheral section DP2-1 may remain black without displaying an image. The peripheral area PA of the splicing display device DA includes a border, which is typically black; therefore, the solid color image displayed by the peripheral section DP2-1 is typically a black image.

[0042] At least one second display module DP2 is a Mini-LED direct-view panel or a Micro-LED direct-view panel. Taking a Mini-LED direct-view panel as an example, the second display module includes multiple light-emitting units and a driving circuit. The light-emitting units are Mini-LED chips, with a size ranging from 50 micrometers to 200 micrometers. The driving circuit is configured to provide driving current to the multiple light-emitting units. The Mini-LED second display module also includes a substrate, on which the multiple light-emitting units are disposed, and the driving circuit is also disposed. The substrate is a printed circuit board or a flexible circuit board.

[0043] The plurality of light-emitting units includes at least two first light-emitting units LEDA and a plurality of second light-emitting units MLED. The first light-emitting units LEDA are configured to emit light at a preset frequency, and the second light-emitting units MLED are configured to emit light at multiple frequencies. At least two first light-emitting units LEDA form a light-emitting area, which has a characteristic pattern. The shape of the light-emitting area formed by the at least two first light-emitting units LEDA is circular or rectangular, such as... Figure 2 and Figure 3 As shown. When the shape of the light-emitting area is circular, the diameter of the circle is greater than or equal to 2 cm, for example, the diameter of the circle is 2 cm, 2.5 cm, 3 cm, or 3.5 cm. When the shape of the light-emitting area is rectangular, the side length of the rectangle is greater than or equal to 2 cm, for example, the side length of the rectangle is 2 cm, 2.5 cm, 3 cm, or 3.5 cm. In this way, the camera of the remote control can accurately capture the position information of at least two first light-emitting units LEDA. The preset frequency is greater than 700 Hz, for example, the preset frequency is 700 Hz, 800 Hz, 900 Hz, 1000 Hz, 1200 Hz, 1500 Hz, or 2000 Hz. When the preset frequency is greater than 700 Hz, the event vision sensor can accurately identify the periodic light intensity changes produced by the first light-emitting units LEDA emitting light at the preset frequency, thereby obtaining the precise position of these first light-emitting units LEDA on the splicing display device DA.

[0044] The emission frequency of the plurality of second light-emitting units MLEDs located in the display unit DP2-2 is a non-fixed value. The plurality of second light-emitting units MLEDs in the display unit DP2-2 are used to display an image that matches the image displayed on the first display module DP1. The emission state of the plurality of second light-emitting units MLEDs in the display unit DP2-2 changes according to changes in image data; therefore, the emission frequency of the plurality of second light-emitting units MLEDs in the display unit DP2-2 changes with changes in image data, and the emission frequency is a non-fixed value. The emission frequency of at least two first light-emitting units LEDA configured to emit light at a preset frequency is a fixed value, which is the preset frequency.

[0045] The second light-emitting unit MLED is disposed in the display unit DP2-2. At least two first light-emitting units LEDA, configured to emit light at a preset frequency, are disposed in the peripheral unit DP2-1, such as... Figure 2 As shown, or a portion of at least two first light-emitting units LEDA configured to emit light at a preset frequency are disposed in the peripheral portion DP2-1, and the other portion is disposed in the display portion DP2-2, as shown. Figure 3 As shown. In one embodiment, at least two first light-emitting units LEDA configured to emit light at a preset frequency are all disposed in the peripheral portion DP2-1. In this case, the light-emitting area formed by the at least two first light-emitting units LEDA is completely located within the peripheral area PA of the splicing display device DA, and the size of the light-emitting area is smaller than the width of the peripheral area PA of the splicing display device DA. In another embodiment, a portion of the at least two first light-emitting units LEDA configured to emit light at a preset frequency is disposed in the peripheral portion DP2-1, and the other portion is disposed in the display portion DP2-2. In this case, the light-emitting area formed by the at least two first light-emitting units LEDA spans both the peripheral area PA and the display area AA of the splicing display device DA, with a portion of the light-emitting area located in the peripheral area PA and the other portion located in the display area AA.

[0046] When the first light-emitting units LEDA, configured to emit light at a preset frequency, are located in the peripheral section, the color of the light emitted by at least two of the first light-emitting units LEDA is the color of the solid color image. The peripheral section DP2-1 is configured to display a solid color image corresponding to the color of the peripheral area PA of the video wall display device DA. The peripheral area PA of the video wall display device DA is usually black, so the solid color image is usually a black image, and the color of the light emitted by the at least two first light-emitting units LEDA configured to emit light at the preset frequency is black. In this way, the at least two first light-emitting units LEDA configured to emit light at the preset frequency will not have a significant impact on the display image of the video wall display device DA when emitting light.

[0047] The video wall display device DA also includes a controller, which is configured to control at least two first light-emitting units (LEDA) to emit light at a preset frequency upon receiving an activation command, and to control at least two first light-emitting units (LEDA) to stop emitting light at the preset frequency upon receiving a shutdown command. The controller is configured to control the operating state of at least two first light-emitting units (LEDA), including a state of emitting light at the preset frequency and a state of stopping emitting light at the preset frequency. The controller controls at least two first light-emitting units (LEDA) in at least one second display module DP2 to emit light at the preset frequency via software programs and drivers, thereby forming an emitting area. When the remote control does not need to perform pointing interaction functions, the controller controls at least two first light-emitting units (LEDA) to stop emitting light at the preset frequency, without affecting the normal display of the video wall display device DA.

[0048] The controller includes a processing unit and a storage unit. The processing unit is a central processing unit or a microcontroller, and the storage unit is a read-only memory or random access memory. The storage unit stores software programs and drivers. The processing unit executes the software programs and drivers to control the operating state of at least two first light-emitting units (LEDA). The controller also includes a communication interface configured to receive activation and deactivation commands. The communication interface can be a wireless communication interface or a wired communication interface.

[0049] The video wall display device DA also includes a first wireless communication circuit configured to communicate wirelessly with a second wireless communication circuit of a remote controller. Both the first and second wireless communication circuits include a Bluetooth module or a WiFi module. The first wireless communication circuit receives activation and deactivation commands from the second wireless communication circuit of the remote controller and transmits these commands to a controller. The first wireless communication circuit also receives pointing coordinates from the second wireless communication circuit of the remote controller and transmits these coordinates to the controller, which then controls the display cursor on the video wall display device DA based on these coordinates.

[0050] The terminal device provided in the embodiments of this application includes a remote control and a splicing display device DA. The remote control includes a camera and a second wireless communication circuit. The camera is an event vision sensor camera. The event vision sensor camera includes an event vision sensor, which is used to identify periodic light intensity changes generated by a first light-emitting unit LEDA that emits light at a preset frequency.

[0051] The camera is configured to capture images of the splicing display device DA and acquire position information of at least two first light-emitting units LEDA, calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the splicing display device DA. The splicing display device DA is configured to display a cursor based on the pointing position coordinates.

[0052] The terminal device operates as follows: When the remote control is activated, it sends an activation command to the first wireless communication circuit of the splicing display device DA via a second wireless communication circuit. Upon receiving the activation command, the first wireless communication circuit of the splicing display device DA transmits it to the controller. Upon receiving the activation command, the controller controls at least two first light-emitting units (LEDA) to emit light at a preset frequency. The remote control's camera captures images of the splicing display device DA and acquires the position information of at least two first light-emitting units (LEDA). The remote control calculates the pointing coordinates based on the position information and sends these coordinates to the first wireless communication circuit of the splicing display device DA via the second wireless communication circuit. The first wireless communication circuit of the splicing display device DA transmits the pointing coordinates to the controller. The controller then controls the splicing display device DA to display a cursor based on the pointing coordinates, thus achieving remote pointing functionality. When the remote control is deactivated, it sends a deactivation command to the first wireless communication circuit of the splicing display device DA via the second wireless communication circuit. Upon receiving the deactivation command, the first wireless communication circuit of the splicing display device DA transmits it to the controller. Upon receiving the deactivation command, the controller stops at least two first light-emitting units (LEDA) from emitting light at the preset frequency.

[0053] The camera is configured to filter out light signals of non-preset frequencies emitted by the splicing display device DA, while retaining light signals of the preset frequency PFL1, such as... Figure 4 As shown. The camera's system configuration includes frequency filtering parameters, which the camera uses to filter out light signals of non-preset frequencies. For example, if the preset frequency is 1000 Hz and the camera's system configuration sets the frequency filtering parameter to 1000 Hz, only data from light sources that change at 1000 Hz in the camera's captured image will be transmitted to the remote control's processor.

[0054] Since at least one of the second display modules DP2's display units DP2-2 may also display light signals of a preset frequency during the display process, the image captured by the camera includes not only the light signals PFL1 of the preset frequency from at least two first light-emitting units LEDA serving as anchor points, but also random light signals PFL2 of the preset frequency from the display unit DP2-2 located between the at least two first light-emitting units LEDA. Figure 4 As shown, the camera therefore acquires two parts of data, including light signals PFL1 of a preset frequency from at least two first light-emitting units (LEDA) and random light signals PFL2 of a preset frequency that appear in the display unit DP2-2 during the display process. These random light signals PFL2 of a preset frequency interfere with the light signals PFL1 of the preset frequency from the at least two first light-emitting units (LEDA) that serve as anchor points.

[0055] The remote control also includes a processor configured to remove light signals of a preset frequency emitted by the second light-emitting unit MLED in the second display module DP2, excluding the at least two first light-emitting units LEDA configured to emit light at a preset frequency. In other words, the processor is configured to remove light signals emitted at a preset frequency by the second light-emitting unit MLED in the image captured by the camera. Figure 4 As shown, the processor uses an algorithm to retain the light signal PFL1 of a preset frequency corresponding to the light-emitting area formed by at least two first light-emitting units (LEDA) in the image captured by the camera, while removing all random light signals PFL2 of a preset frequency appearing outside the light-emitting area formed by at least two first light-emitting units (LEDA). After executing the algorithm, the processor calculates the pointing position coordinates based on the retained position information of the at least two first light-emitting units (LEDA).

[0056] The algorithm executed by the processor includes the following steps: First, the processor acquires the position information of all light signals of preset frequencies in the image captured by the camera; second, the processor determines the boundary of the light-emitting area based on the shape and size of the light-emitting area formed by at least two first light-emitting units (LEDA); then, the processor determines whether the position of each light signal of preset frequency is within the boundary of the light-emitting area. If it is within the boundary of the light-emitting area, the data of the light signal of preset frequency is retained; if it is not within the boundary of the light-emitting area, the data of the light signal of preset frequency is removed; finally, the processor determines the position information of at least two first light-emitting units (LEDA) based on the retained data of the light signals of preset frequencies.

[0057] The processor determines the spatial positional relationship between the remote control and the video wall display device DA through geometric calculations based on the position information of at least two first light-emitting units (LEDA). Then, it calculates the coordinates of the remote control's pointing position on the video wall display device DA. Specifically, the processor obtains the pixel coordinates of at least two first light-emitting units (LEDA) in the image captured by the camera. Based on the pixel coordinates and the camera's intrinsic parameters, it calculates the positions of the at least two first light-emitting units (LEDA) in the camera coordinate system. Based on the positions of the at least two first light-emitting units (LEDA) in the camera coordinate system and their known positions in the video wall display device DA coordinate system, it calculates the spatial positional relationship between the camera and the video wall display device DA. Finally, based on the spatial positional relationship between the camera and the video wall display device DA and the camera's pointing direction, it calculates the coordinates of the camera's pointing position on the video wall display device DA, i.e., the pointing position coordinates.

[0058] The camera's intrinsic parameters include focal length, principal point coordinates, and distortion coefficients. Focal length represents the focal length of the camera lens; principal point coordinates represent the coordinates of the center position of the camera's image sensor in the pixel coordinate system; and distortion coefficients represent the coefficients of radial and tangential distortion of the camera lens. Based on the camera's intrinsic parameters, the processor converts the pixel coordinates of at least two first light-emitting units (LEDA) in the image captured by the camera into the positions of at least two first light-emitting units (LEDA) in the camera coordinate system.

[0059] The processor calculates the spatial positional relationship between the camera and the splicing display device DA using a perspective transformation algorithm, based on the positions of at least two first light-emitting units (LEDA) in the camera coordinate system and the known positions of at least two first light-emitting units (LEDA) in the splicing display device DA coordinate system. The perspective transformation algorithm includes solving for the rotation matrix and translation vector. The rotation matrix represents the rotation relationship of the camera coordinate system relative to the splicing display device DA coordinate system, and the translation vector represents the translation relationship of the camera coordinate system relative to the splicing display device DA coordinate system.

[0060] The processor calculates the coordinates of the camera's pointing position on the video wall display device DA based on the camera's spatial position relative to the device and its pointing direction. The camera's pointing direction is the direction of its optical axis, and the intersection of the camera's optical axis and the display plane of the video wall display device DA is the camera's pointing position. The processor calculates the coordinates of the intersection point of the camera's optical axis and the display plane of the video wall display device DA based on the direction of the camera's optical axis and the equation of the display plane; these intersection coordinates are the pointing position coordinates.

[0061] Second Embodiment like Figure 5 As shown, the splicing display device DA provided in the embodiments of this application includes at least two first display modules DP1 and at least one second display module DP2. The at least two first display modules DP1 are spliced ​​together as one unit, and the at least one second display module DP2 is disposed at the splicing seam between two adjacent first display modules DP1. The at least one second display module DP2 includes multiple light-emitting units (second light-emitting units MLED) and at least two infrared light-emitting components ILED, which are configured to emit infrared light.

[0062] At least one second display module DP2 includes a display section DP2-2 and a peripheral section DP2-1. The display section DP2-2 is located in the display area AA of the splicing display device DA, and the peripheral section DP2-1 is located in the peripheral area PA of the splicing display device DA. The peripheral section DP2-1 is located at both ends of the display section DP2-2, that is, the peripheral section DP2-1 includes a first peripheral section located at the first end of the display section DP2-2 and a second peripheral section located at the second end of the display section DP2-2, with the first end and the second end disposed opposite to each other.

[0063] At least one second display module DP2 is a Mini-LED second display module. The Mini-LED second display module includes multiple light-emitting units (second light-emitting units MLED), at least two infrared light-emitting components ILED, and a driving circuit. The multiple light-emitting units (second light-emitting units MLED) are Mini-LED chips, with a size ranging from 50 micrometers to 200 micrometers. The driving circuit is configured to provide driving current to the multiple light-emitting units (second light-emitting units MLED) and at least two infrared light-emitting components ILED. The Mini-LED second display module also includes a substrate, on which the multiple light-emitting units (second light-emitting units MLED) and at least two infrared light-emitting components ILED are disposed, and the driving circuit is also disposed on the substrate. The substrate is a printed circuit board or a flexible circuit board.

[0064] A light-emitting unit (second light-emitting unit MLED) is disposed in the display unit DP2-2. At least two infrared light-emitting components ILED are disposed in the peripheral part DP2-1, such as... Figure 6 As shown, or at least two infrared light-emitting components (ILEDs) are disposed in the display unit DP2-2, such as Figure 7 As shown. When at least two infrared light-emitting components ILED are disposed in the peripheral portion DP2-1, the infrared light-emitting components ILED are disposed at the end of the peripheral portion DP2-1 away from the display portion DP2-2, that is, the infrared light-emitting components ILED are disposed at the end of the first peripheral portion away from the display portion DP2-2 and / or the end of the second peripheral portion away from the display portion DP2-2. When at least two infrared light-emitting components ILED are disposed in the display portion DP2-2, the infrared light-emitting components ILED are disposed among multiple light-emitting units (second light-emitting units MLED), that is, the infrared light-emitting components ILED and multiple light-emitting units (second light-emitting units MLED) are mixed and arranged.

[0065] The infrared light-emitting component (ILED) includes Mini-LED beads that emit infrared light. The Mini-LED beads are configured to emit infrared light. Infrared light has a wavelength range of 700 nanometers to 1 millimeter. Since infrared light is outside the visible light range, the infrared light emitted by the ILED component will not interfere with the display image of the DA (Display Array) video wall.

[0066] At least one second display module DP2 includes a lamp board with multiple light-emitting units (second light-emitting units MLED) and at least two infrared light-emitting components ILED. The multiple light-emitting units (second light-emitting units MLED) are used to display images, and the at least two infrared light-emitting components ILED are used to emit infrared light as a position identification signal. The lamp board also includes a driving circuit configured to drive the multiple light-emitting units (second light-emitting units MLED) to display images and to drive the at least two infrared light-emitting components ILED to emit infrared light. The driving circuit includes multiple driving chips, each configured to drive a group of light-emitting units (second light-emitting units MLED) or a group of infrared light-emitting components ILED. The driving circuit also includes multiple power lines and multiple signal lines; the power lines provide power to the driving chips, and the signal lines provide control signals to the driving chips.

[0067] The terminal device provided in the embodiments of this application includes a remote control and a splicing display device DA. The remote control includes a camera and a second wireless communication circuit. The camera is an event vision sensor camera and includes an infrared light filter film configured to transmit infrared light. The infrared light filter film is disposed on the lens of the camera, and only allows infrared light to pass through, blocking visible light from passing through. In this way, the camera only receives infrared light signals and does not receive visible light signals, thereby avoiding interference from visible light on position recognition.

[0068] Infrared light filters are optical thin films composed of multiple layers of dielectric materials, resulting in high transmittance of infrared light and high reflectance or absorption of visible light. Infrared light filters exhibit greater than 90% transmittance of infrared light in the wavelength range of 700 nm to 1 mm, and less than 10% transmittance of visible light in the wavelength range of 380 nm to 700 nm.

[0069] A camera is configured to capture the position information of at least two infrared light-emitting components (ILEDs) on a video wall display device (DA), calculate the pointing coordinates based on the position information, and send the pointing coordinates to the DA. The DA is configured to display a cursor based on the pointing coordinates. The camera filters out visible light using an infrared filter, receiving only infrared signals to accurately acquire the position information of the at least two ILEDs. The remote control's processor, based on the acquired position information of the at least two ILEDs, determines the spatial relationship between the remote control and the DA through geometric calculations, and then calculates the pointing coordinates of the remote control on the DA. The remote control sends the pointing coordinates to the first wireless communication circuit of the DA via a second wireless communication circuit. The first wireless communication circuit of the DA transmits the pointing coordinates to the controller, which then controls the DA to display a cursor based on the pointing coordinates, thus achieving remote pointing functionality.

[0070] Third Embodiment like Figure 8 and Figure 9 As shown, the splicing display device DA provided in the embodiments of this application includes at least two first display modules DP1, at least one frame BF, at least one transparent cover plate CG, and at least two infrared light emitting components ILED. The at least two first display modules DP1 are spliced ​​together as one unit. The edge of the first display module DP1 is disposed on the frame BF. The transparent cover plate CG is disposed on the first display module DP1 and the frame BF. The infrared light emitting component ILED is disposed between the frame BF and the transparent cover plate CG. The infrared light emitting component ILED is configured to emit infrared light.

[0071] The bezel BF is a metal support component used to support the first display module DP1. The bezel BF is made of aluminum alloy or stainless steel. The edge of the first display module DP1 overlaps with the bezel BF, and the edge of the first display module DP1 is fixedly connected to the bezel BF with an adhesive. The adhesive is epoxy resin or acrylic adhesive.

[0072] The transparent cover CG can be a glass cover or a plastic cover, and it is used to protect the first display module DP1. The glass cover is made of soda-lime glass or borosilicate glass, and the plastic cover is made of polymethyl methacrylate or polycarbonate.

[0073] The splicing display device DA also includes optical adhesive OCA, which is applied to the surface of the first display module DP1 and the surface of the bezel BF. A transparent cover plate CG is applied to the optical adhesive OCA, which is positioned on the surface of the bezel BF except for the location of the infrared light-emitting component ILED. The optical adhesive OCA is used to bond the transparent cover plate CG to the first display module DP1 and the bezel BF, and avoids the infrared light-emitting component ILED.

[0074] The portion of the transparent cover plate CG located on the frame BF has a black ink layer BIL, which serves to shield the frame BF. The black ink layer BIL is a layer of black ink printed on the surface of the transparent cover plate CG. The portion of the transparent cover plate CG above the infrared light-emitting component ILED does not have the black ink layer BIL, allowing the infrared light emitted by the ILED to pass through the transparent cover plate CG. This portion of the transparent cover plate CG above the infrared light-emitting component ILED remains transparent, with a transmittance greater than 90%.

[0075] The infrared light-emitting component (ILED) includes LED beads that emit infrared light. The LED beads are configured to emit infrared light. The wavelength range of infrared light is from 700 nanometers to 1 millimeter. Infrared light is not in the visible light range, so the infrared light emitted by the infrared light-emitting component (ILED) will not interfere with the display screen of the video wall display (DA).

[0076] The infrared light-emitting component (ILED) is mounted on the frame (BF) and is fixed to the frame BF by adhesive or soldering. The adhesive is a thermally conductive adhesive or epoxy resin, which conducts the heat generated by the infrared light-emitting component (ILED) during operation to the frame BF, thereby improving the heat dissipation performance of the ILED. The soldering method is either tin soldering or laser soldering, which ensures a secure connection between the infrared light-emitting component (ILED) and the frame BF.

[0077] The number of infrared light-emitting components (ILEDs) is at least two, and these two ILEDs are respectively positioned at different locations on the splicing display device DA. For example, at least two infrared light-emitting components (ILEDs) are respectively positioned on the lower border BF of the two first display modules DP1. The distance between the at least two infrared light-emitting components (ILEDs) is greater than one-tenth of the diagonal length of the display area AA of the splicing display device DA. This allows the remote control camera to accurately capture the position information of the at least two infrared light-emitting components (ILEDs), thereby improving the accuracy of the calculation of the pointing position coordinates.

[0078] The terminal device provided in the embodiments of this application includes a remote controller and a video wall display device (DA). The remote controller includes a camera and a second wireless communication circuit. The camera is an event vision sensor camera and includes an infrared light filter film configured to transmit infrared light. The camera is configured to capture images of the video wall display device (DA) and acquire position information of at least two infrared light-emitting components (ILEDs), calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the video wall display device (DA). The video wall display device (DA) is configured to display a cursor based on the pointing position coordinates.

[0079] The splicing display device DA also includes a controller and a first wireless communication circuit. The controller is configured to control the operating state of at least two infrared light-emitting components (ILEDs), and the first wireless communication circuit is configured to communicate wirelessly with a second wireless communication circuit of the remote controller. The first and second wireless communication circuits include Bluetooth or WiFi modules. Upon receiving an activation command, the controller controls at least two infrared light-emitting components (ILEDs) to emit infrared light; upon receiving a deactivation command, it controls at least two infrared light-emitting components (ILEDs) to stop emitting infrared light.

[0080] The terminal device operates as follows: When the remote control is activated, it sends an activation command to the first wireless communication circuit of the video wall display device (DA) via a second wireless communication circuit. Upon receiving the activation command, the first wireless communication circuit of the DA transmits it to the controller. Upon receiving the activation command, the controller controls at least two infrared light-emitting components (ILEDs) to emit infrared light. The remote control's camera captures images of the DA and acquires the position information of the at least two infrared light-emitting components (ILEDs). The remote control calculates the pointing coordinates based on the position information and sends these coordinates to the first wireless communication circuit of the DA via the second wireless communication circuit. The first wireless communication circuit of the DA transmits the pointing coordinates to the controller. The controller then controls the DA to display a cursor based on the pointing coordinates, thus achieving remote pointing functionality. When the remote control is deactivated, it sends a deactivation command to the first wireless communication circuit of the DA via the second wireless communication circuit. Upon receiving the deactivation command, the first wireless communication circuit of the DA transmits it to the controller. Upon receiving the deactivation command, the controller stops the at least two infrared light-emitting components (ILEDs) from emitting infrared light.

[0081] The splicing display device DA and terminal equipment provided in this application, by setting at least two first light-emitting units (LEDA) configured to emit light at a preset frequency in the second display module DP2, enables a remote control equipped with an event vision sensor to capture the position information of these first light-emitting units (LEDA) emitting light at the preset frequency. The event vision sensor has high sensitivity to changes in light intensity and can accurately identify the periodic changes in light intensity generated by the first light-emitting units (LEDA) emitting light at the preset frequency, thereby obtaining the precise position of these first light-emitting units (LEDA) on the splicing display device DA. Based on the obtained position information of at least two first light-emitting units (LEDA), the remote control determines the spatial position relationship of the remote control relative to the splicing display device DA through geometric calculations, and then calculates the coordinates of the remote control's pointing position on the splicing display device DA. After receiving the pointing position coordinates, the splicing display device DA displays a cursor at the corresponding position, thereby realizing the remote pointing function. This technical solution reuses the original second display module DP2 in the splicing display device DA, without adding additional hardware components, improving the utilization rate of hardware resources and reducing implementation costs. Meanwhile, the location recognition method based on event vision sensors is unaffected by changes in ambient light and can work stably under various lighting conditions. Compared with voice control and gesture recognition technologies, it has higher recognition accuracy and faster response speed, thus solving the technical problem of poor remote interaction accuracy of existing large-size splicing display devices.

[0082] The splicing display device DA and terminal equipment provided in this application further enable a remote control equipped with an infrared light-emitting film to capture the position information of these infrared light-emitting components ILEDs by setting at least two infrared light-emitting components ILEDs in the second display module DP2, or between the frame BF and the transparent cover CG. Since infrared light is outside the visible light range, the infrared light emitted by the infrared light-emitting components ILEDs will not interfere with the display screen of the splicing display device DA, ensuring the quality of the display screen. The remote control's camera filters out visible light through the infrared light-emitting film, receiving only infrared light signals, thereby accurately acquiring the position information of the infrared light-emitting components ILEDs and avoiding position recognition errors caused by visible light interference. The remote control calculates the pointing position coordinates based on the acquired position information of at least two infrared light-emitting components ILEDs and sends the pointing position coordinates to the splicing display device DA. The splicing display device DA displays a cursor based on the pointing position coordinates, realizing the remote position pointing function. This technical solution, by using infrared light as a position identification signal, avoids the influence of visible light on the display screen, while improving the anti-interference capability of position recognition, further enhancing the accuracy and stability of remote interaction.

[0083] The embodiments of this application have been described in detail above. The content of this specification should not be construed as limiting the scope of protection of this application.

Claims

1. A splicing display device, characterized in that, The splicing display device includes at least two first display modules and at least one second display module. The at least two first display modules are spliced ​​together as one unit. The at least one second display module is disposed at the seam between two adjacent first display modules. The at least one second display module includes multiple light-emitting units. The multiple light-emitting units include at least two first light-emitting units and multiple second light-emitting units. The first light-emitting units are configured to emit light at a preset frequency, and the second light-emitting units are configured to emit light at multiple frequencies.

2. The splicing display device according to claim 1, characterized in that, At least one of the second display modules includes a display section and a peripheral section, the display section being located in the display area of ​​the splicing display device, the peripheral section being located in the peripheral area of ​​the splicing display device, and the second light-emitting unit being disposed in the display section; The first light-emitting unit is disposed in the peripheral portion; or A portion of the first light-emitting unit is disposed in the peripheral portion, and another portion is disposed in the display portion.

3. The splicing display device according to claim 2, characterized in that, The display unit is configured to display an image that matches the image of the first display module, and the peripheral unit is configured to display a solid color image that corresponds to the color of the peripheral area of ​​the splicing display device; When the first light-emitting unit is disposed in the peripheral portion, the color of the light emitted by the first light-emitting unit is the color of the solid color image.

4. The splicing display device according to claim 1, characterized in that, The diameter of the smallest circumcircle of the light-emitting area formed by at least two of the first light-emitting units is greater than or equal to 2 cm.

5. The splicing display device according to claim 1, characterized in that, The preset frequency is greater than 700 Hz.

6. The splicing display device according to claim 1, characterized in that, The splicing display device further includes a controller, which is configured to control at least two of the first light-emitting units to emit light at the preset frequency when an activation command is received, and to control at least two of the first light-emitting units to stop emitting light at the preset frequency when a shutdown command is received.

7. A terminal device, characterized in that, The terminal device includes a remote controller and a splicing display device as described in any one of claims 1 to 6. The remote controller includes a camera, which is configured to capture images of the splicing display device and acquire position information of at least two of the first light-emitting units, calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the splicing display device. The splicing display device is configured to display a cursor based on the pointing position coordinates.

8. The terminal device according to claim 7, characterized in that, The camera is configured to filter out light signals of non-preset frequencies emitted by the splicing display device and retain light signals of the preset frequency.

9. The terminal device according to claim 8, characterized in that, The remote control also includes a processor configured to remove light signals emitted by the second light-emitting unit at the preset frequency from the image captured by the camera.

10. A splicing display device, characterized in that, The splicing display device includes at least two first display modules and at least one second display module. The at least two first display modules are spliced ​​together as one unit. The at least one second display module is disposed at the seam between two adjacent first display modules. The at least one second display module includes multiple light-emitting units and at least two infrared light-emitting components, which are configured to emit infrared light.

11. The splicing display device according to claim 10, characterized in that, At least one of the second display modules includes a display section and a peripheral section, the display section being located in the display area of ​​the splicing display device, the peripheral section being located in the peripheral area of ​​the splicing display device, and the light-emitting unit being disposed in the display section; At least two of the infrared light-emitting components are disposed in the peripheral portion; or At least two of the infrared light-emitting components are disposed in the display unit.

12. The splicing display device according to claim 11, characterized in that, When at least two of the infrared light-emitting components are disposed in the peripheral portion, the infrared light-emitting components are disposed at the end of the peripheral portion away from the display portion.

13. The splicing display device according to claim 11, characterized in that, When at least two of the infrared light-emitting components are disposed in the display unit, the infrared light-emitting components are disposed among the plurality of light-emitting units.

14. A splicing display device, characterized in that, The splicing display device includes at least two first display modules, at least one frame, at least one transparent cover plate, and at least two infrared light emitting components. The at least two first display modules are spliced ​​together as one unit. The edge of the first display module is disposed on the frame. The transparent cover plate is disposed on the first display module and the frame. The infrared light emitting components are disposed between the frame and the transparent cover plate. The infrared light emitting components are configured to emit infrared light.

15. The splicing display device according to claim 14, characterized in that, The splicing display device also includes optical adhesive, which is disposed on the surface of the first display module and the surface of the frame. The transparent cover is disposed on the optical adhesive, and the optical adhesive is disposed on the surface of the frame at a position other than the location of the infrared light emitting component.

16. A terminal device, characterized in that, The terminal device includes a remote controller and a splicing display device as described in any one of claims 10 to 15. The remote controller includes a camera, which includes an infrared light filter film configured to transmit infrared light. The camera is configured to capture images of the splicing display device and acquire position information of at least two of the infrared light-emitting components, calculate pointing position coordinates based on the position information, and send the pointing position coordinates to the splicing display device. The splicing display device is configured to display a cursor based on the pointing position coordinates.

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