The mainland is actively developing the small and medium-sized AMOLED industry in the near future. If only the production capacity is concerned, the land plant will grow to more than half of South Korea by 2020. However, because the Korean factory has the advantage of the first mover, it still leads the land manufacturer in terms of technology. Therefore, it is difficult for the land factory to attack major international manufacturers such as Apple in at least five years. However, due to the rapid development of the mainland's own smart phone brand, and the quality of AMOLED is better than TFT LCD. .
The progress of mainland AMOLED core technology is rapidly falling behind the Korean factory for about 3~4 years (1)
The three main bottlenecks of AMOLED technology are Top Emission technology, high-resolution technology, and curved panel technology.
Compared with the traditional Bottom Emission technology, the top illuminating technology has the advantages of higher panel opening rate, higher luminous efficiency and more power saving, but the panel structure is more complicated.
Based on the requirements of power saving, mobile phones and wearable applications all need top lighting technology, and currently the land plants have mass production capabilities.
The AMOLED luminescent material evaporation process is one of the main obstacles to the improvement of yield, and as the panel fineness is improved, the technical obstacles are also increased.
At present, the mainstream specifications of mid-to-high-end smart phone panels are about 5~5.5 inches, Full HD resolution, and the fineness is about 400~450 ppi. Hefei has the ability to mass produce this specification.
Truly also mass-produced the Full HD AMOLED panel, but the size is 5.7 inches and the fineness is slightly lower, 387 ppi.
Samsung Display has already produced 2K resolution panels with a fineness of 550 ppi or more.
The potential for developing flexible substrates is the main advantage of AMOLED over TFT LCD. Technically, PI materials have become mainstream. At present, Korean manufacturers Samsung Display and LG Display have been mass-produced.
Soft AMOLED panels have been demonstrated in major land plants, but mass production is still questionable.
Only the soft-weight production of soft displays and their own brand 3D VR glasses, but the output is not high.
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