An adaptive anti-light interference micro-led display system for building facade

Abstract

The application discloses a kind of self-adaptive anti-light interference Micro-LED display systems for building facade, including display module, optical control layer, ambient light perception module and central controller.Display module has Micro-LED pixel array.Optical control layer includes microfluidic cavity unit aligned with each pixel, which encapsulates conductive and insulating liquid, forms variable optical interface, and changes curvature by voltage applied to its transparent electrode.Environmental light perception module real-time acquisition environmental light intensity and angular distribution.Central controller calculates the light beam control parameters of each pixel based on environmental light information and pre-stored viewing area coordinates, generates independent driving voltage, and controls the deformation of corresponding variable optical interface.Thus, the system synchronously realizes the convergence of pixel display light to the viewing area, and directs the environmental reflected light away from the viewing area, thereby significantly improving the contrast and visibility of the screen in outdoor complex light environment.

Description

Technical Field

[0001] This invention relates to the field of semiconductor optoelectronic technology, and in particular to an adaptive anti-light interference Micro-LED display system for building facades. Background Technology

[0002] With advancements in display technology, Micro-LED displays are increasingly becoming the ideal choice for digital media facades on building exteriors due to their advantages such as high brightness, high reliability, and long lifespan. These displays are expected to provide clear, high-contrast images to specific viewing areas such as streets and plazas, even under strong daylight conditions.

[0003] However, the visibility of current outdoor Micro-LED displays is severely affected by dynamically changing ambient light. When strong light sources such as sunlight shine on the screen surface at different angles, strong specular and diffuse reflections occur on the internal materials and pixel structure of the screen. This reflected light (i.e., ambient light) enters the viewer's line of sight along with the display light emitted by the Micro-LED pixels themselves, causing glare and whitening in some areas of the screen, significantly degrading the overall contrast and color saturation, and in severe cases, making the displayed content completely unreadable.

[0004] To address this issue, existing technologies primarily employ global, passive improvement methods. For example, they generally increase the overall drive current of the display to enhance brightness, attempting to "suppress" ambient light; or they add fixed anti-glare coatings or dark optical films to the screen surface to absorb some ambient light. These methods have inherent limitations: First, simply increasing brightness drastically increases system power consumption and heat dissipation, and has limited effectiveness in suppressing strong side-sunlight from specific directions; second, fixed optical films cannot adapt to the dynamic, non-uniform lighting changes caused by the sun's angle and weather conditions throughout the day, often at the expense of the display's inherent viewing angle or brightness.

[0005] Therefore, how to enable Micro-LED displays on building facades to actively and adaptively adjust their optical performance in response to dynamic and directional ambient light interference, thereby significantly and intelligently improving their display contrast and visibility in complex outdoor lighting environments without continuously increasing power consumption, has become a challenge for the application of Micro-LED displays on building facades. Summary of the Invention

[0006] In view of the aforementioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an adaptive anti-light interference Micro-LED display system for building facades, which aims to improve the contrast and visibility of the screen in complex outdoor lighting environments.

[0007] To achieve the above objectives, this invention discloses an adaptive anti-light interference Micro-LED display system for building facades. The system is applied to building facades and includes: The display module includes multiple Micro-LED pixel units arranged in an array; An optical control layer is attached to the light-emitting surface of the display module. The optical control layer includes multiple microfluidic cavity units that are spatially aligned with and correspond one-to-one with the Micro-LED pixel units. Each microfluidic cavity unit is a sealed cavity with transparent electrodes at both the top and bottom. It encapsulates two immiscible liquids, including a conductive liquid and an insulating liquid, and the interface between the two forms a variable optical interface. When a driving voltage is applied between the transparent electrodes at the top and bottom, the contact angle between the conductive liquid and the hydrophobic insulating layer at the bottom of the cavity changes, thereby driving a change in the curvature of the variable optical interface. An ambient light sensing module is installed on the exterior of the building to collect in real time the intensity and angle distribution information of ambient light incident on the optical control layer and the display module. The central controller is electrically connected to the ambient light sensing module, the display module, and the optical control layer, respectively. The central controller is configured to: calculate the beam control parameters required for each Micro-LED pixel unit in real time based on the ambient light information collected by the ambient light sensing module and the pre-stored viewing area spatial coordinates, and generate a corresponding driving voltage signal accordingly, which is then applied to the transparent electrode of the microfluidic cavity unit; the driving voltage signal causes the curvature of the variable optical interface to change, thereby changing the direction of light passing through the interface, and thus simultaneously achieving: directing the display light of the Micro-LED pixel unit toward the viewing area spatial coordinates, while causing the ambient light incident from the outside and reflected from inside the screen to deviate from the viewing area spatial coordinates.

[0008] Optionally, the bottom and / or sidewalls of the microfluidic cavity unit are patterned with hydrophilic and hydrophobic properties to shrink the conductive liquid into the desired spherical shape, thereby presetting the initial shape of the variable optical interface and the reference direction of beam deflection.

[0009] Optionally, the ambient light sensing module includes a distributed array of multispectral sensors, which are used to measure the intensity and spectral composition of ambient light at different incident angles.

[0010] Optionally, the calculation process of the central controller includes: Based on the ambient light information, the ambient light incident angle entering each Micro-LED pixel unit is obtained; Based on the spatial coordinates of the viewing area, the incident angle of the ambient light, and the angle at which the display light from the Micro-LED pixel unit enters the microfluidic cavity unit, the first angle range that the display light needs to be deflected and the second angle range that the ambient light needs to be deflected are calculated. Based on the first angle range and the second angle range, the curvature that the variable optical interface needs to change is obtained, and then the corresponding driving voltage signal is obtained.

[0011] Optionally, the central controller is configured to: optimize by maximizing the optical contrast within the spatial coordinates of the viewing area, and solve for the driving voltage signal of each microfluidic cavity unit; the optical contrast is defined as the ratio of the display light intensity reaching the spatial coordinates of the viewing area to the ambient reflected light intensity.

[0012] Optionally, the display module and the optical control layer are integrated and packaged into a standardized building curtain wall unit, which includes a unified mechanical interface, electrical interface and heat dissipation structure.

[0013] Optionally, the conductive liquid is an aqueous solution doped with an electrolyte, and the insulating liquid is silicone oil or fluorinated oil; the refractive index difference between the aqueous solution and the insulating liquid is between 0.1 and 0.5.

[0014] Optionally, the central controller is further configured to: access astronomical calculations and real-time meteorological data, predict the trend of the incident angle and intensity of direct sunlight on the building facade in the future, and perform feedforward compensation control on the driving voltage signal based on the prediction.

[0015] The beneficial effects of this invention are as follows: 1. Compared with traditional passive solutions of global brightening or fixed film layers, this invention, through pixel-level independently controllable microfluidic cavity units, can dynamically and precisely adjust the optical path of each pixel based on the real-time sensed direction and intensity of ambient light. This not only enables the active convergence of display light to the target viewing area to enhance the signal, but also actively guides ambient reflected light to non-viewing areas to suppress noise, thereby directly and significantly improving the contrast, clarity, and color fidelity of the screen in complex dynamic lighting environments from a physical perspective. 2. This invention replaces traditional global brightness countermeasures with precise optical path guidance, achieving better visual contrast without continuously driving all pixels at ultra-high power. The system can selectively enhance the brightness of specific viewing angles as needed, thereby significantly reducing the overall power consumption and heat generation of the system and alleviating the pressure on heat dissipation design. 3. By integrating ambient light prediction algorithms (such as feedforward compensation control), this invention allows the system to predict the trend of light changes and adjust in advance, avoiding flickering or jitter caused by the rapid movement of the sun, ensuring the continuity and stability of the display effect. 4. This invention integrates Micro-LED display and optical control layer into a standardized building curtain wall unit with unified mechanical, electrical, and heat dissipation interfaces. This transforms it from an external device into a novel intelligent building skin material, achieving deep and seamless integration of display functions with building structure, aesthetic design, and management systems, thus expanding the possibilities of architectural design.

[0016] In summary, this invention, starting from fundamental optical principles, provides an innovative solution to the problem of outdoor visibility of building facade displays, combining excellent display performance, efficient energy utilization, intelligent environmental adaptability, and user-friendly building integration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the electrical connection structure of each module of an adaptive anti-light interference Micro-LED display system for building facades provided in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the display module and optical control layer provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the principle of how an optical control layer changes the optical path, according to a specific embodiment of the present invention. Detailed Implementation

[0018] This invention discloses an adaptive anti-light interference Micro-LED display system for building facades. Those skilled in the art can refer to this document and appropriately modify the technical details to achieve the desired implementation. It is particularly important to note that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The apparatus and application of this invention have been described through preferred embodiments. Those skilled in the art can clearly modify or appropriately change and combine the apparatus and application described herein without departing from the content, spirit, and scope of this invention to implement and apply the technology of this invention.

[0019] This invention provides an adaptive anti-light interference Micro-LED display system for building facades, wherein the system is applied to building facades, such as... Figure 1 and Figure 2 As shown, it includes: Display module 1, such as Figure 2 As shown, the display module 1 includes multiple Micro-LED pixel units 11 arranged in an array; Optical control layer 2, such as Figure 2 As shown, the optical control layer 2 is attached to the light-emitting surface of the display module 1. The optical control layer 2 includes multiple microfluidic cavity units 21 that are spatially aligned with and correspond one-to-one with the Micro-LED pixel units 11. Each microfluidic cavity unit 21 is a sealed cavity with transparent electrodes 211 at both the top and bottom. It contains two immiscible liquids, including a conductive liquid 212 and an insulating liquid 213. The interface between the two liquids forms a variable optical interface 214. When a driving voltage is applied between the transparent electrodes 211 at the top and bottom, the contact angle between the conductive liquid 212 and the hydrophobic insulating layer at the bottom of the cavity changes, thereby driving the curvature of the variable optical interface 214 to change. Ambient light sensing module 3 is installed on the exterior of the building and is used to collect the intensity distribution and angle distribution information of ambient light incident on the optical control layer 2 and the display module 1 in real time. The central controller 4 is electrically connected to the ambient light sensing module 3, the display module 1, and the optical control layer 2, respectively. The central controller 4 is configured to: calculate the beam control parameters required for each Micro-LED pixel unit 11 in real time based on the ambient light information collected by the ambient light sensing module 3 and the pre-stored viewing area spatial coordinates, and generate the corresponding driving voltage signal accordingly, which is applied to the transparent electrode 211 of the microfluidic cavity unit 21; the driving voltage signal causes the curvature of the variable optical interface 214 to change, thereby changing the direction of light passing through the interface, and thus simultaneously achieving: directing the display light of the Micro-LED pixel unit 11 toward the viewing area spatial coordinates, while causing the ambient light incident from the outside and reflected from inside the screen to deviate from the viewing area spatial coordinates.

[0020] It should be noted that: Display module 1 is the foundation for image information generation in the entire system. Its core consists of multiple Micro-LED pixel units 11 arranged in a dense matrix. Each Micro-LED pixel unit 11 is a miniaturized semiconductor device capable of independent light emission, typically containing red, green, and blue sub-pixels, achieving full-color display through light mixing. These pixel units 11 are integrated at extremely high density (e.g., hundreds to thousands of pixels per inch) on a common substrate, forming a high-resolution display surface. This module receives image signals from the controller and drives each pixel unit 11 to emit light through precise current, forming the original display image. Its high brightness and high reliability provide essential light source assurance for building facade displays.

[0021] The pixel-level optical control layer 2 is the core physical structure for achieving adaptive optical path control in this invention. It is directly attached to the light-emitting surface of the display module 1. This layer consists of millions of microfluidic cavity units 21 that are spatially aligned one-to-one with the Micro-LED pixel units 11 below. Each microfluidic cavity unit 21 is a miniature sealed cavity with transparent indium tin oxide electrodes at both the top and bottom. The cavity encapsulates two immiscible transparent fluids with different refractive indices—typically a conductive aqueous solution and an insulating oil solution. The liquid-liquid interface between the two constitutes the "variable optical interface 214". When a specific driving voltage is applied between the upper and lower electrodes, the contact angle between the conductive solution and the bottom hydrophobic insulating layer changes continuously due to the electrowetting effect, thereby precisely driving the liquid interface to undergo controllable curvature deformation. This deformation is directly equivalent to a microlens with dynamically adjustable focal length and optical axis.

[0022] The ambient light sensing module 3 is the system's "sensory" system, responsible for quantifying interference from the external light environment in real time. This module consists of a distributed array of embedded multispectral sensors installed on the building facade (usually around the display area). These sensors do not simply measure the overall brightness of the ambient light, but rather can collect multi-dimensional information such as the intensity distribution, spectral composition, and incident angle distribution of ambient light incident on different locations on the display screen surface with high spatial and angular resolution. The collected data constructs a dynamic digital light field model, enabling the system to "know" in real time the precise location, intensity, and time-varying trend of interfering light sources (such as the sun or strong reflectors), providing accurate input for subsequent intelligent control.

[0023] The central controller 4 is the "brain" of the system, a hardware and software complex integrating a high-performance processor, storage unit, and dedicated drive circuitry. It is interconnected with the three modules mentioned above via electrical wiring. Its core function is to run a dedicated adaptive control algorithm: First, it receives and processes multi-dimensional light field data from the ambient light sensing module 3 in real time, combining it with pre-stored internal three-dimensional spatial coordinates corresponding to a specific viewing area (such as the plaza floor). Based on this information, the controller solves an optimization model aimed at maximizing the optical contrast of the viewing area, independently calculating an optimal "beam control parameter" for each Micro-LED pixel unit 11. This parameter is immediately converted into a specific driving voltage signal and applied to the electrodes of the corresponding microfluidic cavity unit 21. Through this independent, parallel, real-time control, the controller directs the entire optical control layer 2 to work collaboratively, ultimately achieving two core optical effects simultaneously: precisely "projecting" the display light of each pixel onto the viewing area, and "guiding" the reflected main lobe of the ambient light incident on that pixel to other directions.

[0024] In this specific embodiment, the optical control layer 2 can change the emission angles of the display light and ambient light from the Micro-LED pixel unit 11 by altering the curvature of the variable optical interface 214. Specifically, as shown... Figure 3 As shown, Figure 3 In this process, by adjusting the curvature of the variable optical interface 214, the same incident angle θ1 can be made to exhibit different deflection directions θ2 after passing through the microfluidic cavity unit 21. Figure 3 a) and θ3 ( Figure 3 (b) Based on this, embodiments of the present invention can orient the display light of the Micro-LED pixel unit 11 toward the spatial coordinates of the viewing area, while simultaneously causing ambient light incident from the outside and reflected from inside the screen to deviate from the spatial coordinates of the viewing area. Furthermore, this principle demonstrates that by independently controlling the curvature of each microfluidic cavity unit 21, the outgoing light path of each pixel can be independently customized.

[0025] In this specific embodiment, the bottom and / or sidewalls of the microfluidic cavity unit 21 are patterned with hydrophilic and hydrophobic properties to shrink the conductive liquid 212 into the desired spherical shape, thereby presetting the initial shape of the variable optical interface 214 and the reference direction of beam deflection.

[0026] It should be noted that, to achieve a controllable initial state for the variable optical interface 214, the bottom or inner surface of the sidewall of the microfluidic cavity unit 21 underwent precise hydrophilic-hydrophobic patterning. A hydrophobic coating was formed in designated areas using micro / nano fabrication techniques, while maintaining hydrophilic properties in other areas. This process causes the conductive liquid 212 within the cavity to spontaneously contract and stabilize in a specific spherical shape due to surface tension in the absence of voltage, thus pre-setting the initial curvature and spatial orientation of the variable optical interface 214. This initial shape defines the reference zero point for beam deflection, ensuring the directional consistency and linearity of subsequent electronically controlled adjustments, and is a crucial technological foundation for achieving repeatable and precise optical path control.

[0027] In this specific embodiment, the ambient light sensing module 3 includes a distributed array of multispectral sensors, which are used to measure the intensity and spectral composition of ambient light at different incident angles.

[0028] It should be noted that the core of the ambient light sensing module 3 is a distributed multispectral sensor array. These sensor nodes are installed in a grid pattern around the perimeter of the display area or integrated into the gaps between the curtain wall units, rather than simply sensing overall brightness. Each sensor unit can measure ambient light from different directions, resolving its intensity, spectral composition (i.e., color information), and even specific polarization states. By fusing the data from all nodes, the system can reconstruct a dynamic, high-resolution light field map illuminating the building facade in digital space, accurately calibrating the incident azimuth and spectral characteristics of major interfering light sources (such as the sun and neon lights), providing crucial input parameters for pixel-level control.

[0029] In this specific embodiment, the calculation process of the central controller 4 includes: Based on the ambient light information, the ambient light incident angle entering each Micro-LED pixel unit 11 is obtained; Based on the spatial coordinates of the viewing area, the incident angle of the ambient light, and the angle at which the display light from the Micro-LED pixel unit 11 enters the microfluidic cavity unit 21, the first angle range that the display light needs to be deflected and the second angle range that the ambient light needs to be deflected are calculated. Based on the first angle range and the second angle range, the curvature that the variable optical interface 214 needs to change is obtained, and then the corresponding driving voltage signal is obtained.

[0030] It should be noted that the execution of the control algorithm involves a series of coherent geometric optical calculations. First, based on data from the perception module, the three-dimensional angle vector of the ambient light incident on each specific pixel position on the screen is calculated. Next, combining the preset three-dimensional coordinates of the viewing area and the spatial coordinates of the pixel itself, the algorithm calculates the ideal ray vector from that pixel to the viewing area. By comparing the ambient light incident vector, the ideal display light exit vector, and the current state of the optical interface, the algorithm solves for the display light deflection angle and the ambient reflected light deflection angle required to achieve the dual goals of "signal enhancement and noise suppression". Finally, based on the physical model of the optical interface curvature and deflection angle, the precise driving voltage value required to achieve this dual-angle deflection is solved.

[0031] In this specific embodiment, the central controller 4 is configured to: optimize by maximizing the optical contrast within the spatial coordinates of the viewing area, and solve for the driving voltage signal of each microfluidic cavity unit 21; the optical contrast is defined as the ratio of the intensity of the displayed light reaching the spatial coordinates of the viewing area to the intensity of the ambient reflected light.

[0032] It's important to note that the core operations of the central controller 4 revolve around a specific physical optimization objective: maximizing the optical contrast of the viewing area. Here, contrast is precisely defined as the ratio of the intensity of the Micro-LED display light signal reaching the viewer's eye to the intensity of ambient reflected light interference. The controller treats the display screen as a whole composed of hundreds of thousands of independent, controllable optical units, and uses optimization algorithms (such as gradient descent or linear programming) to rapidly search among millions of possible voltage combinations for a solution that achieves global or local optima for the aforementioned contrast objective function. This process ensures that the system always operates in an optimal or near-optimal state against ambient light.

[0033] In this specific embodiment, the display module 1 and the optical control layer 2 are integrated and packaged into a standardized building curtain wall unit, which includes a unified mechanical interface, electrical interface and heat dissipation structure.

[0034] It should be noted that, to achieve deep integration with the building, display module 1 and optical control layer 2 are jointly integrated and packaged into a standardized, prefabricated building curtain wall unit. This unit has standardized mechanical installation interfaces compatible with conventional building curtain wall glass or panels, unified low-voltage electrical and data interfaces, and a built-in heat dissipation structure. This design allows the display system to be quickly assembled onto the building frame like a regular curtain wall, and easily connected to the building's power and control systems, truly becoming part of the building's facade, rather than a post-installed device.

[0035] In this specific embodiment, the conductive liquid 212 is an aqueous solution doped with electrolyte, and the insulating liquid 213 is silicone oil or fluorinated oil; the refractive index difference between the aqueous solution and the insulating liquid 213 is between 0.1 and 0.5.

[0036] It should be noted that the working medium within the microfluidic cavity must meet specific electrical, optical, and chemical requirements. The conductive liquid 212 is typically an aqueous solution doped with electrolytes such as potassium chloride to provide conductivity; the insulating liquid 213 is often optically transparent, chemically inert silicone oil or a specially formulated fluorinated oil. A key design parameter is the refractive index difference between the two liquids, which is usually controlled between 0.1 and 0.5. This range ensures that the variable optical interface 214 has sufficient light deflection capability while avoiding excessive total internal reflection or excessive aberrations due to a large refractive index difference, forming the material basis for achieving efficient, low-distortion beam manipulation.

[0037] In this specific embodiment, the central controller 4 is also configured to: access astronomical and real-time meteorological data, predict the trend of the incident angle and intensity of direct sunlight on the building facade in the future, and perform feedforward compensation control on the driving voltage signal based on the prediction.

[0038] It should be noted that, to improve the system's smoothness in responding to rapidly changing lighting conditions (such as moving clouds, sunrise, and sunset), the central controller 4 integrates a more advanced predictive feedforward function. The controller connects to an astronomical database and real-time meteorological data stream via a communication interface. Based on geographic location, date and time, and weather forecasts, the algorithm can predict the sun's direct trajectory on the building facade, its intensity changes, and the possibility of cloud obstruction several minutes to several hours in advance. Based on this predicted trend, the system fine-tunes the drive voltage in advance, achieving "pre-cancellation" of ambient light interference. This significantly reduces delays and flickering caused by sudden changes in ambient light, maintaining a consistent and stable visual experience.

[0039] Compared to traditional passive solutions that rely on global brightening or fixed film layers, this invention utilizes pixel-level independently controllable microfluidic cavity units 21 to dynamically and precisely adjust the optical path of each pixel based on the real-time sensed direction and intensity of ambient light. This not only enables the active convergence of display light to the target viewing area to enhance the signal but also actively guides ambient reflected light to non-viewing areas to suppress noise, thereby directly and significantly improving the screen's contrast, clarity, and color fidelity in complex dynamic lighting environments from a physical perspective.

[0040] This invention replaces traditional global brightness suppression with precise optical path guidance, achieving superior visual contrast without continuously driving all pixels at ultra-high power. The system can selectively enhance brightness only at specific viewing angles, significantly reducing overall system power consumption and heat generation, and alleviating the pressure on thermal design.

[0041] By integrating an ambient light prediction algorithm (such as feedforward compensation control), the system can predict the trend of light changes and adjust in advance, avoiding flickering or jittering of the screen caused by the rapid movement of the sun, and ensuring the continuity and stability of the display effect.

[0042] This invention integrates the Micro-LED display and optical control layer 2 into a standardized building curtain wall unit with unified mechanical, electrical, and heat dissipation interfaces. This transforms it from an external device into a novel intelligent building skin material, achieving deep and seamless integration of display functionality with building structure, aesthetic design, and management systems, thus expanding the possibilities of architectural design.

[0043] In summary, this invention provides an innovative solution to the problem of outdoor visibility of building facade displays, based on fundamental optical principles. It combines excellent display performance, efficient energy utilization, intelligent environmental adaptability, and user-friendly building integration.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0045] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. An adaptive anti-light interference Micro-LED display system for building facades, characterized in that, The system is applied to the exterior facade of a building and includes: The display module includes multiple Micro-LED pixel units arranged in an array; An optical control layer is attached to the light-emitting surface of the display module. The optical control layer includes multiple microfluidic cavity units that are spatially aligned with and correspond one-to-one with the Micro-LED pixel units. Each microfluidic cavity unit is a sealed cavity with transparent electrodes at both the top and bottom. It encapsulates two immiscible liquids, including a conductive liquid and an insulating liquid, and the interface between the two forms a variable optical interface. When a driving voltage is applied between the transparent electrodes at the top and bottom, the contact angle between the conductive liquid and the hydrophobic insulating layer at the bottom of the cavity changes, thereby driving a change in the curvature of the variable optical interface. An ambient light sensing module is installed on the exterior of the building to collect in real time the intensity and angle distribution information of ambient light incident on the optical control layer and the display module. The central controller is electrically connected to the ambient light sensing module, the display module, and the optical control layer, respectively. The central controller is configured to: calculate the beam control parameters required for each Micro-LED pixel unit in real time based on the ambient light information collected by the ambient light sensing module and the pre-stored viewing area spatial coordinates, and generate a corresponding driving voltage signal accordingly, which is then applied to the transparent electrode of the microfluidic cavity unit; the driving voltage signal causes the curvature of the variable optical interface to change, thereby changing the direction of light passing through the interface, and thus simultaneously achieving: directing the display light of the Micro-LED pixel unit toward the viewing area spatial coordinates, while causing the ambient light incident from the outside and reflected from inside the screen to deviate from the viewing area spatial coordinates.

2. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The bottom and / or sidewalls of the microfluidic cavity unit are patterned with hydrophilic and hydrophobic properties to shrink the conductive liquid into the desired spherical shape, thereby presetting the initial shape of the variable optical interface and the reference direction of beam deflection.

3. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The ambient light sensing module includes a distributed array of multispectral sensors, which are used to measure the intensity and spectral composition of ambient light at different incident angles.

4. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The calculation process of the central controller includes: Based on the ambient light information, the ambient light incident angle entering each Micro-LED pixel unit is obtained; Based on the spatial coordinates of the viewing area, the incident angle of the ambient light, and the angle at which the display light from the Micro-LED pixel unit enters the microfluidic cavity unit, the first angle range that the display light needs to be deflected and the second angle range that the ambient light needs to be deflected are calculated. Based on the first angle range and the second angle range, the curvature that the variable optical interface needs to change is obtained, and then the corresponding driving voltage signal is obtained.

5. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The central controller is configured to: optimize by maximizing the optical contrast within the spatial coordinates of the viewing area, and solve for the driving voltage signal of each microfluidic cavity unit; the optical contrast is defined as the ratio of the display light intensity reaching the spatial coordinates of the viewing area to the ambient reflected light intensity.

6. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The display module and the optical control layer are integrated and packaged into a standardized building curtain wall unit, which includes a unified mechanical interface, electrical interface and heat dissipation structure.

7. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The conductive liquid is an aqueous solution doped with electrolyte, and the insulating liquid is silicone oil or fluorinated oil; the refractive index difference between the aqueous solution and the insulating liquid is between 0.1 and 0.

5.

8. The adaptive anti-light interference Micro-LED display system for building facades according to claim 1, characterized in that, The central controller is also configured to: access astronomical calculations and real-time meteorological data, predict the trend of the incident angle and intensity of direct sunlight on the building facade in the future, and perform feedforward compensation control on the driving voltage signal based on the prediction.

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