This year, various Micro LED transparent products showcased at exhibitions have attracted a lot of attention. Not only can these displays show various types of information, but they also have a transparent quality that gives them a refreshing appeal. According to incomplete statistics, over ten companies have released more than ten types of transparent Micro LED display products so far.
Comparison Between Micro LED Transparent Screens and OLED Displays
Currently, small and medium-sized transparent display products are primarily dominated by OLED transparent screens, with China accounting for more than half of the global market share (51%). Since OLED technology has matured, why are so many companies turning to Micro LED transparent screens? Let’s compare the advantages of both:
Brightness:
Transparent Micro LED displays offer significantly higher brightness compared to transparent OLED screens, which makes them less affected by ambient light. This makes them especially suitable for commercial advertising displays, automotive displays, and other applications. Micro LED displays can achieve a brightness of at least 1000 nits and a contrast ratio of 150,000:1, while OLED displays are currently limited to 200–300 nits, making Micro LED a better option for AR and VR products.
Lifespan and Stability:
In terms of lifespan and display performance stability, Micro LED is more stable and longer-lasting compared to OLED. Micro LED does not suffer from screen burn-in issues even after long periods of use and is less likely to experience failures or dead pixels. Transparent Micro LED is better suited for engineering displays, as these often involve long-term use of fixed colors, images, or text. OLED technology, which uses organic compounds to emit light, is prone to permanent marks over time, so transparent OLED has not been widely used in engineering products.
Environmental Adaptability:
OLED displays typically operate in environments ranging from -30°C to 85°C, while Micro LED displays can function in environments as extreme as -100°C to 120°C. This high environmental adaptability makes Micro LED transparent displays ideal for specialized applications, such as automotive glass.
Customizability:
Micro LED offers more flexibility in customization. With the elimination of boundary issues between modules, Micro LED screens can be tailored to various shapes, sizes, and proportions. As a result, these products not only can be scaled up in size but also customized in form factor. While OLED screens can cover a range from small to large sizes, the cost increases significantly with larger sizes, whereas Micro LED is the opposite.
Cost:
Currently, transparent Micro LED displays are expensive, and OLED screens are more affordable. However, with the maturation of Micro LED technology, costs are expected to decrease, and the price gap with OLED displays will narrow.
Future Development of Transparent Micro LED Displays
From a technological standpoint, Micro LED addresses the shortcomings of OLED, such as aging and burn-in issues, and also has advantages in terms of lifespan. This is why some companies are betting on Micro LED. Many companies are investing in both technologies for their portfolios.
In terms of product applications, transparent Micro LED displays have various potential use cases, including automotive displays, AR glasses, laptops, commercial exhibitions, cinemas, and outdoor advertising. Among these, the automotive sector has seen a particularly high level of investment. AUO‘s Micro LED smart window display has already been implemented on cruise ship windows, though mass-market products have not yet been released.
Overall, transparent Micro LED display technology is still in its early stages. Challenges such as breakthroughs in TFT glass substrate technology, mass transfer technology, product yield, and cost reduction need to be addressed, which will take time. Therefore, industry experts expect the demand for transparent Micro LED displays to increase significantly in the next 2-3 years.
Conclusion:
Transparent Micro LED displays have been a major highlight this year as a new development in Micro LED technology, frequently appearing at exhibitions. With advantages such as high brightness, long lifespan, seamless splicing, high contrast, and strong stability, the application fields for transparent Micro LED displays are rapidly expanding. While the technology is still in the exploratory phase and requires further refinement, it has the potential to achieve significant breakthroughs alongside OLED transparent displays in their respective application areas.
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