In today’s display‑technology landscape, Mini LED is rapidly emerging as the preferred choice for high‑end applications, thanks to its superior contrast ratio, exceptional brightness, and long lifespan. In the manufacturing of Mini LED displays, adhesive—acting as a critical packaging material—directly impacts the performance and quality of the final product.
Betely silicone‑based LED potting compounds not only boast proprietary intellectual property but also fill a critical domestic market gap. The products enjoy strong sales both at home and abroad, and the company has established strategic and technological partnerships with internationally renowned brands, underscoring its robust industry strength and competitive technical edge.
Focus on the Core: Betely Mini LED Adhesive
In response to the diverse packaging process requirements of Mini LED, Betely has meticulously developed two core adhesive product lines: the BQ-8351 series and the BQ-49×× series. Covers LENS, self‑flow, and mainstream packaging methods. , comprehensively meeting the performance requirements of high-end display applications.
Overview of Technical Specifications for Selected Products
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Glue model
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BQ-4911
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BQ-8351
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Glue type
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Phenylmethylsilicone resin
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Phenyl silicone resin
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Dispensing method
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LENS
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Self-leveling
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Mixing ratio
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Single-component
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1:10
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Thixotropy index
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4.2
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/
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Viscosity before curing (25°C, mPa·s)
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12000
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1200
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Refractive index before curing
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1.48
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1.54
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Transmittance before curing
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90%
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92%
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Density after curing (25°C, g/cm³)
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1.12
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1.16
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Hardness after curing (Shore D)
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30°
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50°
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Product Advantages: Four Core Pillars, Forging Uncompromising Quality
1. The solution boasts strong compatibility and addresses a wide range of needs.
Betely Mini LED adhesive is engineered to suit the specific characteristics of various packaging processes, ensuring precise alignment with production requirements.
● LENS Adhesive (BQ-49×× Series): A single-component formulation that is easy to handle, offering excellent molding performance and strong adhesion to substrates. It can be dispensed in circular or planar shapes, widening the viewing angle and enhancing visual effects, making it the preferred choice for mainstream packaging processes on today’s market.
● Self-leveling adhesive (BQ-8351): Low viscosity and excellent flowability; requires use with a damming adhesive (high‑reflectivity damming adhesive is recommended to minimize light leakage and enhance light output efficiency). Supports three damming methods: single‑zone, full‑area, and single‑pixel.
2. Excellent thixotropy, ensuring stable and reliable molding.
Thixotropy is a key parameter that influences the encapsulation performance of Mini LED adhesives. By optimizing the resin structure, Betely has endowed its adhesives with outstanding thixotropic properties:
● Taking BQ-4911 as an example, its thixotropy index reaches 4.2, and in a three-stage thixotropy test, it can recover 90% of its viscosity in as little as 5.1 seconds.
● After being rapidly jetted through a piezoelectric valve, the adhesive quickly regains its viscosity, effectively preventing deformation during molding and ensuring the uniformity and stability of Mini LED pixels.
3. Excellent light transmission and weather resistance, enhancing display performance.
● High light transmittance: BQ-4911 achieves a transmittance of 90%, while BQ-8351 reaches 92%. Combined with a mid‑refractive‑index design—close to the refractive index of anti‑sedimentation powder—this further minimizes light loss, delivering more vivid and true-to-life display colors.
● Wide-Temperature Adaptability: Designed to meet the broad-temperature operating requirements of Mini LED, it maintains stable performance across a -40°C to 120°C range, satisfying the rigorous environmental durability demands of automotive and outdoor display applications.
4. High environmental friendliness and stability, ensuring production safety.
● Betely possesses mature synthesis processes for phenyl‑silicone resins and phenyl‑silicone oils, enabling precise monitoring of the viscosity, molecular weight, and hydroxyl content of semi‑finished products to ensure material stability.
● Proficient in the processing and dispersion of precipitated silica, leveraging specialized analytical instruments such as rheometers and infrared spectrometers to ensure end-to-end quality control from production to finished product. Our products meet stringent industry standards for environmental friendliness and safety.
Application Scenarios: Empowering High-End Displays Across Multiple Industries
Betely Mini LED adhesive, thanks to its outstanding performance, is widely used in a variety of high-end display applications:
● Consumer Electronics: Compatible with TVs, laptops, high-end monitors, and more, it enhances screen contrast and color accuracy, delivering an immersive visual experience.
● In-vehicle display ： Compatible with in‑vehicle central control screens, instrument panels, and more; maintains stable performance across a wide range of temperatures, ensuring driving safety and clear display visibility.
As a key partner in the Mini LED display industry, Betely has consistently been driven by technological innovation and centered on high‑quality products, providing professional Mini LED adhesive solutions to customers worldwide. Looking ahead, Betely will continue to deepen its expertise in materials, helping bring more high‑end display products to market and fostering the industry’s sustained growth.
