In 2016, the millet MIX concept phone made its debut, sparking a wave of excitement with its full-screen design. This innovation received widespread acclaim from the industry and marked the beginning of a new era in smartphone development. For the display sector, the rise of full-screen OLED panels created a high demand, ushering in a period of rapid growth and technological advancement. By the second half of 2017, the full-screen trend exploded across the market. Major domestic and international brands launched their latest full-screen devices, while Apple's iPhone X, a symbol of premium smartphones, also adopted the full-screen design, pushing the trend to new heights. OLED panels became the ideal choice for full-screen phones due to their superior performance, leading to their dominance in the high-end market. OLED panels offer several advantages over traditional LCDs, such as being lighter, more energy-efficient, and delivering richer colors. Their adoption in full-screen smartphones not only increases the screen-to-body ratio but also helps address power consumption issues associated with larger displays. As the full-screen trend continued to grow in 2018, the demand for OLED panels surged, leading to supply shortages, especially as low-end models began adopting the technology. However, the global OLED panel market is currently dominated by Samsung, which has secured major orders, including those from Apple. This situation poses a challenge for domestic manufacturers looking to compete in the high-end segment. While companies like BOE and Huaxing Optoelectronics are investing heavily in OLED production, they still face technical hurdles, particularly in achieving stable mass production. Meanwhile, Sharp, now under Foxconn's ownership, announced plans to start mass-producing OLED panels in early 2018, potentially challenging Samsung’s monopoly. If successful, Sharp could become a key supplier for Apple, making it harder for Chinese brands to secure enough OLED panels. Apple's growing demand for OLED panels in 2018 intensified the competition, forcing domestic brands to seek alternatives. In response, companies like Huawei, Xiaomi, and OPPO have started exploring MicroLED as a potential replacement for AMOLED. This emerging technology, known for its faster response times, better contrast, and higher color saturation, is seen as the next big step in display evolution. Although MicroLED is still in early stages, Apple and other industry leaders are actively investing in its development. Taiwanese manufacturers are also preparing to transition their production lines to support MicroLED. Industry forecasts suggest that by 2018, millions of smartphones could be equipped with MicroLED screens, signaling a potential shift in the display landscape. Despite the promise, challenges remain. MicroLED requires advanced manufacturing techniques and ultra-high-density packaging, which are still being refined. Sony is one of the few companies that have successfully commercialized the technology, showcasing a 10.1-inch MicroLED display at CES 2018. As domestic brands push forward with MicroLED, a new battle for the future of smartphone displays is on the horizon. Whether they can lead the charge or catch up remains to be seen, but one thing is clear: the screen war is just beginning.

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