In the early years, a P10 full-color unit board needed a double-layer burden, and an indoor full-color unit board also needed a backpack to drive the LED display. Now the small space is simplified, and cob is more integrated!
Led small spacing display technology, SMD discrete device technology products have been launched since 2010, which makes the point spacing of indoor LED display from 3mm era to 2.5mm led small spacing display era. With the promotion of market demand, the LED small spacing display market has achieved a high-speed growth far higher than the traditional LED display market, which has led to the maturity of SMD discrete device led small spacing display technology. The point spacing has also reached 1.0 mm from 2.5 mm, 1.9 mm, 1.5 mm and 1.2 mm. At this time, SMD discrete device led small spacing display technology has encountered insurmountable technical obstacles. With the gradual reduction of point spacing, SMD devices have poor anti-collision ability. The reliability of SMD discrete device led small spacing display technology can not meet the requirements of users, and it is difficult to achieve the point spacing below 1 mm.
In order to solve the problem of SMD discrete device led small space display technology, the leading manufacturers in LED industry began to explore an innovative cob (chip on board) integrated packaging technology in 2014. Through the integration of LED chip and PCB substrate, the reliability problem of SMD discrete device led small spacing technology can be effectively solved, and the problem of point spacing below 1 mm can not be realized. The LED small spacing display is realized from SMD discrete device era to cob “integrated circuit” era.
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Mini optoelectronics began to launch and mass produce micro LED display products based on cob technology in March 2018. The point spacing ranges from 1.9mm, 1.5mm, 1.2mm to 0.9mm, 0.6mm, especially for 0.9mm point spacing products below 1mm. Due to the cost and reliability advantages brought by the high integration of cob technology, it provides customers with a cost-effective micro led solution with small spacing display below 1mm. With the progress of technology, cob technology will be more and more integrated, providing users with 0.5mm, 0.4mm, 0.3mm, 0.2mm, 0.1mm and other micro LED display products with higher integration. Cob technology is expected to bring led small spacing technology into the “integrated circuit” era.