Principles, Structure, and Core Advantages of Acoustic Transparent LED Displays

6 views admin 2025-11-26

As an innovative segmented product in the LED display field, acoustic transparent LED displays have become the preferred solution for conference rooms, cinemas, command centers, commercial exhibitions, and other scenarios, thanks to their integrated "display + sound transmission" functionality. Below is a comprehensive analysis from three dimensions—principles, structure, and core advantages—combined with industry technical trends, balancing professionalism and accessibility:

The core logic of acoustic transparent LED displays is to ensure high-definition display while enabling sound waves to penetrate the screen smoothly, overcoming the technical pain point of "sound insulation" in traditional LED displays.

Sound Transmission Design: By optimizing pixel arrangement and opening structure, tiny and uniform sound-transmitting holes (with an aperture size of 0.5-2mm and an opening rate of 20%-40%) are reserved between LED chips. This allows sound waves from speakers to propagate through these gaps, preventing sound from being blocked or reflected by the screen.

Display Compensation: The impact of openings on display quality is offset through "high-density LED chips + precise optical design". By reducing pixel pitch (P1.0-P2.5 as the mainstream), improving chip luminous efficiency and contrast, it ensures no "black spots" in the opening areas, maintaining the integrity and clarity of the overall image.

Collaborative Working Logic: Acoustic transparent LED displays are usually used with speakers hidden behind the screen. Sound waves penetrate the screen directly to the audience, eliminating the need for additional speaker installation space and achieving an integrated experience of "the screen as the sound source".

The structure of acoustic transparent LED displays is built around three core requirements: sound transmission, display performance, and durability, adopting an overall layered modular design. Key components include:

Display Panel Layer (Core Layer): Composed of LED chips, PCB boards, and sound-transmitting holes. LED chips adopt SMD (Surface Mount Device) or COB (Chip on Board) packaging technology; PCB boards are made of high thermal conductivity and lightweight materials; holes are processed via laser precision cutting to ensure uniform aperture and smooth edges, avoiding impacts on sound transmission and chip heat dissipation.

Sound-Transparent Protection Layer: Some products add a layer of transparent protective material (such as tempered glass or transparent PC board) on the outer side of the display panel. This layer also features corresponding sound-transmitting holes, providing dustproof, scratch-resistant, and anti-glare functions without affecting light transmittance and sound transmission efficiency.

Drive and Control Layer: Includes driver ICs, signal receiving modules, and power management units. Adopting a lightweight design to avoid occupying excessive space, it ensures stable signal transmission, supports high refresh rates (≥60Hz) and low latency (≤10ms), and is compatible with dynamic image display.

Heat Dissipation and Support Layer: Equipped with thin heat sinks or heat dissipation nets on the back, achieving air circulation through the opening structure to reduce the operating temperature of LED chips. The frame is made of aluminum alloy or steel, balancing lightweight design and mechanical strength for easy installation and maintenance.

Compared with the traditional combination of "LED display + independent speakers", the advantages of acoustic transparent LED displays focus on three dimensions: integration, space utilization, and user experience, meeting the lightweight and high-aesthetic requirements of modern scenarios:

Doubled Space Utilization, Adaptable to Complex Installation Scenarios: No additional space for speaker installation is required—speakers can be directly hidden behind the screen, saving over 50% of installation space. It is particularly suitable for narrow spaces (such as small conference rooms and embedded display walls) or scenarios with high aesthetic requirements (such as high-end commercial complexes and cinema screens).

Synchronized Audio and Video, Enhanced Immersion: Sound propagates directly from behind the screen, avoiding issues such as audio-visual asynchrony and messy sound reflections caused by "separated display and speakers" in traditional solutions. The audience can experience an immersive "sound from the screen" effect, making it ideal for scenarios with high audio requirements such as cinemas and lecture halls.

Dual Excellence in Display and Sound Transmission, No Performance Compromise: The opening design does not affect display quality—mainstream products offer a contrast ratio of over 10000:1, brightness of ≥500cd/㎡ (indoor), support for 4K resolution and wide color gamut; the sound transmission rate can reach over 85%, close to the sound propagation effect without obstruction, with minimal sound quality loss.

Easy Installation and Maintenance, Reduced Comprehensive Costs: The modular design supports quick assembly and disassembly, eliminating the need to remove the entire structure during later maintenance. The integrated solution reduces speaker wiring and installation steps, lowering construction difficulty and long-term maintenance costs.

Wide Application and Strong Compatibility: Suitable for various indoor and outdoor scenarios (outdoor products require additional waterproof coating), it seamlessly connects with video conferencing systems, central control systems, and audio equipment. It meets the needs of display, sound effects, and intelligent control, covering multiple industries including government and enterprises, commercial displays, and cultural tourism.

Currently, the technical upgrading direction of acoustic transparent LED displays focuses on "higher opening rates (exceeding 40%), smaller pixel pitches (below P0.9), and flexible design". Meanwhile, with the popularization of COB packaging technology, the flatness, heat dissipation, and sound transmission coordination of the screen are further improved. Its core value lies in solving the industry pain point of "mutually exclusive display and sound transmission", making it a typical representative of the development of LED displays towards "scenarioization and integration". In the future, its penetration rate in high-end display scenarios will continue to rise.