LG Display Becomes World's First to Verify Commercialization of Blue Phosphorescent OLED Panels

Rhea-AI Summary

LG Display has achieved a major breakthrough as the first company to verify commercialization-level performance of blue phosphorescent OLED panels in mass production. This development marks a significant step toward creating the "dream OLED" - a display incorporating phosphorescence for all three primary colors.

The innovation uses a hybrid two-stack Tandem OLED structure, combining blue fluorescence and phosphorescence to achieve 15% lower power consumption while maintaining stability. This breakthrough comes just eight months after partnering with UDC, solving a 20-year industry challenge.

Key developments include:

• Patents filed in South Korea and United States
• Technology to be showcased at SID Display Week 2025
• Applications planned for smartphones, tablets, AI PCs, and AR/VR devices

The technology represents a major advancement in display efficiency, as phosphorescence offers 100% luminous efficiency compared to fluorescence's 25%, using only a quarter of the power.

Positive

• First company globally to verify commercial-level blue phosphorescent OLED panels for mass production
• Technology reduces power consumption by 15% while maintaining stability
• Successfully secured patents in South Korea and United States for hybrid blue phosphorescent OLED technology
• Technology applicable to high-growth markets including AI PCs and AR/VR devices
• Achieved breakthrough in blue phosphorescence after 20+ years of industry attempts

Negative

• Requires complex two-stack Tandem OLED structure for implementation
• Currently limited to small and medium-sized panels

Insights

Display Technology Analyst

LG Display's blue phosphorescent OLED breakthrough solves a 20-year industry challenge, enabling more power-efficient displays for next-generation devices.

LG Display has achieved a significant technological milestone by becoming the first company to verify commercialization-level performance of blue phosphorescent OLED panels. This represents the final piece in achieving the "dream OLED" - a display that achieves phosphorescence for all three primary colors (red, green, and blue).

The technical significance is substantial: while fluorescent materials offer only 25% luminous efficiency, phosphorescent materials achieve 100% efficiency, using just a quarter of the power. LG's innovative hybrid approach with a two-stack Tandem OLED structure (blue fluorescence in lower stack, blue phosphorescence in upper stack) maintains stability while reducing power consumption by 15%.

What distinguishes this announcement is LG's verification on actual mass production lines - moving beyond laboratory concepts to commercial viability. The company has secured intellectual property protection through patents in both South Korea and the United States.

The timing aligns perfectly with market demands, as the technology will initially be applied to small and medium-sized panels for smartphones, tablets, AI PCs and AR/VR devices - all categories where power efficiency and high definition are increasingly critical requirements. This positions LG Display as a technology leader in a strategic segment of the display market where power efficiency creates meaningful competitive differentiation.

Final Step to Achieving "Dream OLED"

SEOUL, South Korea, April 30, 2025 /PRNewswire/ -- LG Display, the world's leading innovator of display technologies, announced today that it has become the world's first company to successfully verify the commercialization-level performance of blue phosphorescent OLED panels on a mass production line. The achievement comes about eight months after the company partnered with UDC to develop blue phosphorescence, and is considered a significant step closer to realizing a "dream OLED" display.

In the display industry, "dream OLED" refers to an OLED panel that achieves phosphorescence for all three primary colors of light (red, green, and blue). OLED panel light emission methods are broadly categorized into fluorescence and phosphorescence. Fluorescence is a simpler process in which materials emit light immediately upon receiving electrical energy, but its luminous efficiency is only 25%. In contrast, phosphorescence briefly stores received electrical energy before emitting light. Although it is technically more complex, this method offers luminous efficiency of 100% and uses a quarter as much power as fluorescence.

However, achieving blue phosphorescence has remained a major challenge even more than 20 years after the commercialization of red and green phosphorescence. This is due to blue, among the three primary colors, having the shortest wavelength and demanding the greatest energy.

LG Display has solved this issue by using a hybrid two-stack Tandem OLED structure, with blue fluorescence in the lower stack and blue phosphorescence in the upper stack. By combining the stability of fluorescence with the lower power consumption of phosphorescence, it consumes about 15% less power while maintaining a similar level of stability to existing OLED panels.

In particular, LG Display is the first to succeed in reaching the commercialization stage of blue phosphorescent OLED panels, where performance evaluation, optical characteristics, and processability on actual mass production lines should all be confirmed. The company has already completed commercialization verification with UDC.

LG Display has independently filed patents for its hybrid blue phosphorescent OLED technology in both South Korea and the United States.

The company will showcase a blue phosphorescent OLED panel featuring two-stack Tandem technology at SID Display Week 2025, the world's largest display event, in San Jose, California from May 11th (local time).

At the show, LG Display will be unveiling a blue phosphorescent OLED panel featuring two-stack Tandem technology applied to a small and medium-sized panel that can be applied to IT devices such as smartphones and tablets. As more and more products require high definition and high efficiency such as AI PCs and AR/VR devices, the application of blue phosphorescence technology is expected to expand rapidly.

"The successful commercialization of blue phosphorescence technology, which has been called the final piece of the 'dream OLED' puzzle, will become an innovative milestone towards the next generation of OLED," said Soo-young Yoon, CTO and Executive Vice President of LG Display. "We expect to secure a leading position in the future display market through blue phosphorescence technology."

About LG Display

LG Display Co., Ltd. [NYSE: LPL, KRX: 034220] is the world's leading innovator of display technologies, including thin-film transistor liquid crystal and OLED displays. The company manufactures display panels in a broad range of sizes and specifications primarily for use in TVs, notebook computers, desktop monitors, automobiles, and various other applications, including tablets and mobile devices. LG Display currently operates manufacturing facilities in Korea and China, and back-end assembly facilities in Korea, China, and Vietnam. The company has approximately 70,707 employees operating worldwide. For more news and information about LG Display, please visit www.lgdisplay.com.

Media Contact:
Joo Yeon Jennifer Ha, Manager, Communication Team
Email: hjy05@lgdisplay.com

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SOURCE LG Display

FAQ

What breakthrough did LG Display (LPL) achieve with blue phosphorescent OLED in 2025?

LG Display became the first company to verify commercialization-level performance of blue phosphorescent OLED panels on a mass production line, using a hybrid two-stack Tandem OLED structure that reduces power consumption by 15%.

How does LG Display's new blue phosphorescent OLED technology reduce power consumption?

The technology combines blue fluorescence in the lower stack and blue phosphorescence in the upper stack, achieving 15% lower power consumption while maintaining stability comparable to existing OLED panels.

When will LG Display showcase its blue phosphorescent OLED technology at SID Display Week 2025?

LG Display will showcase its blue phosphorescent OLED panel with two-stack Tandem technology at SID Display Week 2025 in San Jose, California, starting May 11th, 2025.

What devices will benefit from LG Display's blue phosphorescent OLED technology?

The technology will be applied to small and medium-sized panels for IT devices like smartphones, tablets, AI PCs, and AR/VR devices that require high definition and high efficiency.

Why is blue phosphorescent OLED considered the final piece of 'dream OLED'?

Blue phosphorescence completes the 'dream OLED' by achieving phosphorescence for all three primary colors (red, green, and blue), offering 100% luminous efficiency compared to fluorescence's 25%.