Here is an accurate introduction to MNLED (Mini Optoelectronics) flip-chip COB pure aluminum surface technology and products, combined with your previous COB-HW outdoor small-pitch scenarios to provide an integrated explanation, highlighting the core structure, performance advantages and adaptability.
1. Core definition and structure
MNLED： Jiangsu Mini Optoelectronics's brand identity focuses on high-end LED displays and creative mechanical screens; flip chip COB eliminates traditional gold wire bonding wires, the RGB chip electrode faces down, directly bonds to the substrate pads through metal bumps, and then uses special resin as a whole package; The pure aluminum plate surface (pure aluminum substrate, commonly used 6061/5052 aluminum alloy) adopts a sandwich structure of "aluminum substrate + high thermal conductivity insulating layer + circuit layer" to replace ordinary FR-4. The thermal conductivity can reach 180 - 200 W/(m·K), which is hundreds of times that of FR-4.
Process points: flip chip mounting → eutectic soldering/reflow soldering → overall resin coating → integration of pure aluminum substrate heat dissipation; there are no independent lamp beads, the panel is seamless and smooth, and it is extremely protective.
2. Key performance advantages
Extreme heat dissipation: The flip-chip structure allows the heat source to be directly close to the aluminum base, greatly reducing the thermal resistance. Outdoor 3500 - 7000nits highlights and long-term operation. The junction temperature is controllable, effectively avoiding light fading and color cast, and significantly extending life; suitable for high temperature, High power density scenarios.
Image quality upgrade: No gold wire blocking, improved light uniformity, combined with a high contrast ratio of 100000:1 and a top refresh rate of 15360Hz, moire and water ripples are completely eliminated, making the dynamic picture clearer; dot spacing 0.6/0.8/1.2/1.6mm supports the full range.
Strong outdoor protection: COB fully sealed + pure aluminum rigid support, with IP65 dust and water resistance, impact resistance, static resistance, and salt fog resistance; adapt to rain, snow, sand, and drastic temperature differences.
Strong size compatibility: 320× 180mm standard module can accurately splice a full range of resolutions such as 1080P, 2K, 4K, 6K, 8K, 16K, etc., without additional cutting, making engineering efficiency high.
3. Application scenarios
Perfectly suitable for your previous COB-HW outdoor product line: large outdoor advertising screens, live broadcast of sports venues, transportation hubs, cultural and tourism landscape screens, and high-end outdoor exhibition halls. It is especially suitable for long-term high-intensity operation and requires heat dissipation and reliability. demanding projects.
supplementary note
The pure aluminum plate surface is not an "exposed aluminum surface", but the bottom layer of the substrate is pure aluminum, and the display surface is the resin protective layer of the COB package; compared with the formal COB, the flip-chip COB has fewer solder joints, stronger earthquake resistance, and lower failure rate. Lower, is the high-end preferred solution for outdoor small spacing.