SMD vs MIP vs COBLED display technology comparisonSMDMIPCOBSurface-mounted deviceMini/Micro LED in packageChip on boardStructure(cross-section)Pre-packaged RGB lamp beadsTiny chips are packaged, testedBare chips are bonded straight toare soldered onto the PCB.and binned first, then mountedthe PCB, then sealed under aonto the PCB.resin layer.Pixel pitchP1.2 and above (P0.9 at the limit).About P0.4 to P1.0.About P0.4 to P1.2 and finer.SurfaceprotectionLow: exposed lamps, vulnerableMedium to good: each chip isHigh: sealed surface resists dust,to knocks and moisture.individually packaged.moisture and impact.Contrast anduniformityGood; fine-pitch units can showVery good: pre-binned chips giveVery good: dark, uniform surface;mixed-color patches.consistent color.can show batch variation.Wide viewingangleWide (typically about 140–160°);Wide (about 160°):Widest (up to about 170°): flatcolor can shift at steep sideblack-packaged chips keep colorsealed surface gives evenangles.and contrast steadier off-axis.brightness and less glare.HeatdissipationModerate.Good.Good: heat spreads directly intothe board.ScreenlifespanLong (typically aboutLong (about 100,000 hours): chipsLongest (100,000 hours or more):50,000–100,000 hours); exposedare tested before mounting, sosealed surface limits damagelamps can fail earlier fromfewer early failures.from the environment.moisture or knocks.MaintenanceEasiest: replace single lamps.Moderate: replace singleHardest: usually module-levelpackages, but they're tiny.repair.ManufacturingyieldHigh and mature.Improving: testing beforeLower at fine pitch: defects aremounting catches defects.found after bonding.CostLowest.Mid to high, falling with scale.Mid to high, higher at ultra-finepitch.Best forOutdoor, rental and generalPremium fine-pitch displays,Fine-pitch walls in tough orindoor signage.control rooms.high-touch spaces.Illustrations are simplified schematics, not product photos. Figures are typical industry values and vary by manufacturer.