However, it is understood that there are not many domestic screen companies that can mass produce and ship COB display products, and the overall number is only maintained in single digits.
However, correspondingly, since the beginning of 2021, major manufacturers such as Lanpu Video and Absen have announced their participation in the flip-chip COB display camp and released related flip-chip COB display products.
In the process of developing from small-pitch to fine-pitch display, the original SMD package has been difficult to break through the limitation of smaller dot pitch, and it is difficult to guarantee higher reliability and protection. Fine-pitch display requires COB technology to support it. Towards a smaller pitch.
Big factories have entered the game
On March 14, Lanpu Video held the 2021 new product global launch conference. The full-flip co-cathode COB display panel is the star product of the LANPU video conference this time.
It is understood that the Lanpu Video full flip-chip common cathode COB display panel uses Micro pixel pitch and Mini chips. At the same time, the full flip-chip COB packaging technology cooperates with the common cathode to ensure the high reliability and stability of the product to a greater extent. Sex and energy saving.
According to Dai Zhiming, Chairman of Lanpu Video, introduced at the press conference, the new Lanpu Video size products cover P0.2-0.3-0.4-0.5-0.6-0.7-0.8-0.9-1.0-1.2-1.5 and other different point pitches. .
Prior to this, Absen also announced that it had joined the flip-chip COB+Micro LED camp.
On March 12, Absen launched its online spring new product launch conference focusing on introducing a new generation of Micro LED display technology and new products.
Absen Micro LED technology also uses flip-chip COB packaging technology.
As Li Mantie, chairman of Lehman Optoelectronics, said before, "COB technology is actually an integrated packaging technology. We believe that in the future, whether it is called Mini or Micro LED products, COB integrated packaging technology should be adopted."
Li Mantie believes that COB integrated packaging technology to replace previous discrete devices is an industry advancement.
This trend will undoubtedly be recognized and supported by major display manufacturers in 2021.
The Display Home also learned that, at present, Chuangxian Optoelectronics, Lianjian Optoelectronics, and Cedar Electronics are still carrying out or planning to further expand the COB display production capacity this year.
How many are there for mass production and shipment?
For a long time, affected by technology and supporting equipment, the price of COB products is much higher than that of SMD discrete devices. This has also led to the fact that the domestic COB shows that the camp is lonely.
It is understood that there are currently no more than 8 domestic COB display companies capable of mass production and shipment, including Lehman Optoelectronics, Cedar Electronics, Chuangxian Optoelectronics, and Zhongqi Optoelectronics.
The mass production time of Lehman Optoelectronics and Cedar Electronics will be around 2018, while the mass production time of enterprises such as Zhongqi Optoelectronics and Chuangxian Optoelectronics will be in 2020.
The reason is that, on the one hand, the COB technology threshold is high, and the demand for ultra-high-definition display market has only started to accelerate in the second half of 2019.
"With the increasing demand for ultra-high-definition displays on the application side, the scale of the LED display industry and technological process innovation are more important." Li Mantie said in an interview, especially in the era of Micro LED ultra-high-definition display, only COB technology A large number of enterprises have been blocked out.
Display Home also noticed that most display companies currently recognize that COB is the inevitable trend of LED displays in the future.
In particular, several large listed display screen companies have invested heavily in the COB field for R&D and production in the past two years.
However, it is understood that some display companies have encountered many problems in the research and development process, and the progress is relatively slow.
There have also been rumors in the industry that a well-known display screen company has invested tens of millions of yuan in COB research and development in recent years, but has not been able to mass produce it, and its shipments basically rely on external procurement and OEM.
The market acceptance problem caused by cost is also an important reason why many display companies have not dared to invest heavily in entering the COB market.
