LG Display Achieves Milestone with Blue Phosphorescent OLEDs

LG Display Achieves a Groundbreaking Innovation in OLED Technology

Final Step to Achieving 'Dream OLED'

LG Display has made a significant leap in display technology by becoming the first company to verify the commercialization-level performance of blue phosphorescent OLED panels on a mass production line. This breakthrough follows an eight-month collaboration with UDC, marking a pivotal moment in the journey towards achieving the highly sought-after 'dream OLED'.

Understanding 'Dream OLED'

In the world of displays, 'dream OLED' signifies an OLED panel that can utilize phosphorescence for all three primary colors: red, green, and blue. The method of light emission in OLED panels is divided into fluorescence and phosphorescence. Fluorescence allows light to emit instantly upon receiving an electric charge but has a low luminous efficiency of about 25%. On the other hand, phosphorescence involves a storage phase for electrical energy before light emission, resulting in a stellar luminous efficiency of 100% and requiring significantly less power.

The Challenge of Blue Phosphorescence

Since the commercialization of red and green phosphorescence began over two decades ago, achieving blue phosphorescence has been particularly challenging. This is mainly due to blue's shorter wavelength, which necessitates a higher energy input.

Innovative Hybrid Two-Stack Tandem OLED Structure

LG Display has tackled this challenge head-on by developing a hybrid two-stack Tandem OLED structure. This innovative design incorporates blue fluorescence in the lower layer and blue phosphorescence in the upper layer. The integration of these technologies results in a power consumption reduction of about 15% while maintaining a similar level of stability compared to existing OLED panels.

By becoming the first to reach commercialization of blue phosphorescent OLED panels, LG Display has validated performance, optical characteristics, and processability through real mass production tests, achieving this milestone in partnership with UDC.

Patent Innovations and Future Showcases

LG Display has filed independent patents in both South Korea and the United States for its groundbreaking hybrid blue phosphorescent OLED technology. This innovative technology will be showcased at SID Display Week 2025, one of the largest display exhibitions in the world, where LG Display will present a blue phosphorescent OLED panel configured for small and medium-sized devices, including smartphones and tablets. Amid the rise in demand for high-definition, energy-efficient products like AI-driven PCs and AR/VR devices, the application of blue phosphorescence technology is expected to accelerate.

"The successful commercialization of blue phosphorescence technology, regarded as the final piece of the 'dream OLED' puzzle, will set a revolutionary benchmark for next-generation displays," stated Soo-young Yoon, LG Display's CTO and Executive Vice President. "We anticipate that this technology will enable us to secure a leadership position in the future display market."

About LG Display

LG Display Co., Ltd. is the world's foremost innovator in display technologies, specializing in thin-film transistor liquid crystal and OLED displays. The company provides a vast range of display panels for various applications such as televisions, laptops, desktop monitors, automotive displays, tablets, and mobile devices. With its manufacturing hubs in Korea and China, and assembly facilities in Korea, China, and Vietnam, LG Display employs around 70,707 professionals worldwide. To discover more about LG Display, please visit www.lgdisplay.com.

Media Contact:
Joo Yeon Jennifer Ha, Manager, Communication Team
Email: [email protected]

Frequently Asked Questions

What milestone did LG Display achieve?

LG Display became the first company to verify the commercialization of blue phosphorescent OLED panels, enhancing display technology significantly.

Why is blue phosphorescence significant?

Blue phosphorescence is crucial for OLED technology as it allows for improved efficiency and better color representation in displays, achieving full-color capability with optimal energy usage.

How does LG Display's technology stand out?

LG Display's hybrid two-stack tandem OLED structure cleverly combines both fluorescence and phosphorescence, resulting in lower power consumption and enhanced stability.

When will the technology be showcased?

The blue phosphorescent OLED panel will be displayed at SID Display Week 2025, happening in May, highlighting LG Display's innovative advancements.

How does LG Display contribute to the tech industry?

As a leader in display innovation, LG Display influences the market with their advanced technologies and diverse display solutions for various devices, driving evolution in visual experiences.

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