The domestic smart phone market has developed rapidly in recent years, but the most advanced AMOLED technology has been monopolized by foreign countries. With the domestic development of intelligent equipment upstream supply chain, in addition to semiconductor processors, DRAM, NAND Flash, small and medium-sized AMOLED panels have also received unprecedented attention.
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. 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.
AMOLED display
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. Samsung Display has been able to mass-produce 2K resolution panels with a fineness of 550 ppi or more. Truly has also mass-produced Full HD AMOLED panels, but the fineness is 387 ppi, and there is still a big gap. Soft AMOLED panels have been exhibited in major panel manufacturing in China, but mass production is still in doubt. Currently, only soft-weighted flexible displays are used in their own branded 3D VR glasses, but the output is not high.
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