COB display screen, a new type of display screen that uses chip on board packaging technology, is indeed an innovative display technology that directly packages LED chips on a printed circuit board (PCB). This design not only significantly improves the display performance of the screen, but also enhances its stability and durability.
⑴ Packaging technology characteristics
① Direct packaging: Unlike traditional SMD (Surface Mount Technology), COB displays integrate LED chips directly onto PCB boards without the need for brackets or solder joints, simplifying the manufacturing process.
② Surface light source design: By tightly arranging LED chips on the PCB board, COB displays achieve a transition from "point" light sources to "surface" light sources, providing a more uniform and soft lighting effect.
③ Fully sealed structure: The LED chip is covered with materials such as epoxy resin to form a fully sealed structure, effectively improving the waterproof, moisture-proof, and dustproof capabilities of the display screen.
⑵ Display effect advantages
① High contrast and refresh rate: COB displays typically have extremely high contrast and refresh rates, which can present more delicate and clear images and video content.
② Suppressing moir é patterns: The surface light source design effectively reduces light refraction, thereby suppressing the generation of moir é patterns and improving the clarity of the image.
③ Wide viewing angle: The wide viewing angle feature of COB displays allows viewers to have a consistent viewing experience from different angles.
⑶ Stability and durability
① Long lifespan: Due to the reduction of vulnerable components such as welding points and brackets, the lifespan of COB displays is usually longer, reaching 80000 to 100000 hours.
② Low dead light rate: The fully sealed structure reduces the risk of bad lights caused by external environmental factors, and the dead light rate is much lower than traditional SMD displays.
③ Efficient heat dissipation: LED chips are directly fixed on the PCB board, which facilitates rapid heat transfer and dissipation, reducing the failure rate caused by overheating.
COB display screens are becoming a leader in the field of display technology due to their unique packaging technology, excellent display performance, high stability and durability, as well as a wide range of applications and development prospects.
Post time: Feb-25-2025
