Following its success in the LCD panel market, China’s BOE Technology Group has now been actively narrowing the technology gap with Korean giants in the organic light-emitting diode (OLED) panel domain. Citing industry experts, Business Korea reported that BOE has reduced the technological gap with Korea regarding the high-growth mid-sized OLED sector to one to one and a half years.

The Chinese display industry is rapidly expanding its presence in the OLED market, driven by robust governmental support as well as competitive pricing, while high domestic consumption also fuels sales growth.

BOE, top Chinese display maker, has gradually become a crucial part of the global supply chain for tech giants. In late 2023, Apple finally approved BOE as an iPhone 15 AMOLED supplier. Though the delivery time was delayed due to quality issues, making it falling behind Samsung and LG, BOE is said to supply 2 million panels to Apple, about 3% of its total OLED supply in 2023.

However, BOE has introduced a series of latest OLED panels at SID2024 in mid-May to showcase its progress. According to Business Korea, it disclosed a 31.6-inch slidable OLED panel, which can extend sideways when needed, concealing the screen while not in use. It is also noteworthy that BOE showcased 15-inch and 17-inch foldable panels, targeting the automotive OLED market.

According to an earlier report from Japanese media outlet Nikkei News, BOE plans to boost its OLED panel production capacity by more than 50% compared to the current level within the next three years, demonstrating its ambition in the field.

Reportedly, BOE’s new OLED panel plant “B16” in Chengdu, Sichuan Province, began construction in late March. The goal is to complete the plant building by 2024, install manufacturing equipment by September 2025, and start mass production in 2026, producing 8.6-generation OLED panels. BOE’s competitor, Samsung Electronics, is also said to be looking for mass production of 8.6-generation OLED panels in 2026 by upgrading its existing plants.

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• [News] BOE Looking to Become OLED Panel Leader, Rumored to Have a 50% Capacity Expansion

(Photo credit: BOE)

In the pursuit of a larger screen-to-body ratio, smartphones adopting a “bezel-less” design have become a trend. According to a report from the Korean media outlet “The Elec,” rumors in the market suggest that Apple’s iPhone 17 Pro, expected to be released in 2025, will achieve a “100% bezel-less” look, with supplier LG Innotek reportedly developing an under-display camera. This innovation could potentially become a major selling point for the new iPhone series.

LG Innotek, a major South Korean smartphone camera module manufacturer, is actively working on developing an Under-Panel Camera (UPC) in response to the specific requirements of its important customer, Apple.

The concept involves completely hiding the camera components beneath the screen, eliminating the need for a camera notch. This approach aims to offer a seamless, all-screen experience, and it is anticipated that iPhones featuring under-display cameras could be introduced within the next few years.

However, the report further indicated from its sources that, currently, Apple is more likely to adopt specifications for under-display Face ID rather than UPC.

The reason behind this lies in the fact that under-display cameras come with certain drawbacks. Since the camera is under the display panel, the light transmission of the cover glass can affect the entry of light into the image sensor. Poor resolution and the inability to support high-speed continuous shooting are common fatal flaws associated with under-display cameras.

Nevertheless, according to “The Elec”, in an attempt to overcome these drawbacks, LG Innotek is working on incorporating a free-curve prism under the display for UPC. This hardware enhancement aims to improve the light transmission of the camera under the screen, addressing the issues of low transparency and poor imaging quality.

However, an industry source has pointed out that it is currently uncertain when Apple will actually use the under-display cameras produced by LG Innotek. Reportedly, according to insiders, Apple is not entirely satisfied with the samples provided by LG Innotek.

As early as 2021, Apple’s competitor Samsung had already introduced the Z Fold 3 with an under-display camera design, but the image quality of the camera was significantly inferior to that of traditional punch-hole cameras.

(Photo credit: LG Innotek)

As costs continue to decline, it is projected that OLED technology will reach a 50% penetration rate in the smartphone market by 2023. Additionally, OLED is gradually making inroads into applications such as TVs, laptops, and tablets. According to TrendForce analysis, the current landscape of OLED technology presents various opportunities and challenges depending on the application. In the realm of smartphones, the number of OLED smartphone products is on the rise, and the technology is taking on diverse forms, including rigid OLED screens, OLED curved displays, and OLED foldable displays.

TrendForce predicts that by 2023, the penetration rate of OLED foldable smartphones will reach 1.6%, with sales volume increasing from 12.8 million units in 2022 to 18.26 million units. With advancements in OLED display specifications and increasingly competitive pricing, OLED foldable smartphones are poised to become mainstream in the market. Currently, the penetration rate of OLED foldable smartphones is relatively low, primarily because OLED technology has not fully met user demands for larger screens within the same form factor while maintaining affordability. This marks a significant development trend for foldable smartphones in the future.

In response to the ever-evolving landscape of smartphone screens and high consumer demand, panel makers are taking a multi-faceted approach to upgrading OLED technology. To achieve full-screen displays while ensuring quality in screen visuals and camera functionality, certain brands have begun utilizing hole-punch screens, integrating the camera beneath the display – a prime example being the iPhone 14 Pro series with its Dynamic Island. On the other hand, companies like Samsung, BOE, and CSOT are opting to forego punch holes altogether. Instead, they are enhancing screen transparency and incorporating the camera beneath the display by rearranging specific display area pixels and reducing size.

Panel makers are enhancing OLED technology to improve both lifespan and efficiency. They are adopting LTPO technology to dynamically adjust screen refresh rates, reducing power consumption. Additionally, for foldable screens, companies are eliminating polarizers, using color filters to reduce reflection, and switching to ultra-thin glass cover panels. These optimizations are in response to the varied demands of smartphone applications, and they signal the continued growth of OLED in future smartphone uses.

In the realm of TV, TrendForce thinks that COVID-19, geopolitics, and rising shipping costs, furthermore, companies have been focusing on the development of larger-sized TVs, particularly in the 65, 77, and 85-inch categories, causing the overall decline in the TV market in recent years. The OLED TV market is primarily dominated by Korean manufacturers LG and Samsung. TrendForce projects that in 2023, OLED TVs will account for approximately 2% to 3% of the overall TV market.

TrendForce suggests that Samsung and LG are currently enhancing OLED technology by adopting new materials and incorporating quantum dot technology to improve OLED’s luminous efficiency. This has led to an increase in the cost of OLED technology, which in turn has limited the widespread adoption of OLED TVs. However, with factors such as depreciation of production machinery, improved yield rates for OLED products, and streamlining of the production process, it is expected that OLED TV prices will gradually decrease in the future.

Monitor

In 2023, OLED display shipments are expected to reach approximately 530,000 units, marking a 342% increase by YoY. However, OLED displays are projected to hold only a 2% to 3% market share in the overall display market. Within the OLED display market, LG is poised to surpass Dell and become the brand with the largest market share due to its proactive deployment of OLED product lines and diversified product offerings, along with strong demand for 27-inch products in the market.TrendForce states that the future of OLED displays lies in larger sizes, necessitating the use of higher-generation panel production lines for efficient and cost-effective OLED panel manufacturing.

Notebook, Tablet

In the laptop and tablet arena, as compared to smartphones and televisions, the application of OLED technology has been relatively limited. However, according to TrendForce, OLED technology is beginning to transition into IT-related applications. This includes innovations such as OLED Tandem device structures, as well as recent developments like JDI’s photolithography eLeap and Visionox’s ViP. These advancements are set to significantly enhance OLED performance and lifespan. When these technologies are ready for deployment, they are expected to effectively reduce OLED costs and substantially increase OLED panel penetration in the IT market.

Notably, Apple has already integrated OLED technology into its iPad products, and the Apple brand’s influence is expected to drive other brands to adopt OLED technology, accelerating OLED’s penetration in the IT market.

Automotive display

In the realm of automotive displays and other applications, TrendForce envisions a future for OLED technology characterized by transparency, extended lifespan, and versatility to meet the demands of foldable displays, automotive displays, and transparent displays. In automotive displays, OLED features such as high brightness, wide viewing angles, high contrast, and a broad operating temperature range make it suitable for applications like rear-seat entertainment systems and in-car infotainment displays. In the realm of transparent displays, OLED’s high transmittance and ability to display real-time information make it suitable for use in automotive windshields, windows, and A-pillars. Additionally, in the domain of stretchable displays, flexible OLED screens can be stretched and slid while maintaining a consistent thickness.

TrendForce’s latest report, “AMOLED Technology and Market Status”, reveals that OLED, the next generation of digital displays, has not only taken hold of the smartphone market but is also beginning to make its move into other applications. Organic OLED materials are the core of the industry supply chain, accounting for 23% of the cost of making smartphone panels. An increasing penetration rate has allowed the global value of OLED materials to be estimated at US$2.23 billion in 2022, with a YoY growth rate of 30%. Production values are expected to reach US$3 billion by 2025, owing to the support of manufacturers.

OLED light-emitting components are either based on polymers or small-molecule materials. Polymers have poor solubility in organic solvents, which results in impure color and poor film uniformity. However, when combined with printing technology, the high aperture ratio can fit more materials and compensate for the poor lifespan and efficiency of polymers. Small-molecule materials have purer color and exhibit higher brightness, which can be applied to larger-generation OLED production. However, they are currently limited to developing FMM and vapor deposition machines.

OLED production begins with synthesizing intermediates from raw monomers. Then, the intermediates are processed to become precursors before finally being sublimated and purified into terminal OLED materials. When raw monomers are synthesized chemically into intermediates, there’s a gross margin of about 10–20%. These are mainly supplied by Chinese manufacturing companies such as Jilin OLED Material, Ruilian New Materials, Aglaia Tech, and Shenzhen Mason. Terminal materials are produced via sublimation and purification and their structure will not change through subsequent production. Therefore, the chemical structure, processes, and formulas are essential to trade secrets for terminal material manufacturers. The purity of these materials after sublimation is expected to be very high, meaning that technological barriers are also very high, allowing for gross margins as high as 60–70%. The technology and patents are concentrated within a few foreign manufacturers. However, the booming market has led to an influx of upstream manufacturers, gradually breaking down past technological barriers. Some Chinese manufacturers have been able to achieve mass production of precursors and terminal materials, and are now actively competing in the supply chain and driving growth.

Apart from two electrodes, the structure of an OLED component consists of organic light-emitting materials, including the main host (light-emitting layer), guest material (dopant), and functional layers (with electron or hole transport properties). DuPont and LG Chemical are the major manufacturers of red OLEDs, while Samsung DSI and Merck mostly produce green OLEDs. UDC has a monopoly on red and green phosphorescent dopant materials due to patent barriers. Blue light-emitting materials used to be primarily supplied by Idemitsu Kosan and Merck. Recently, LG’s next generation OLED evo TV uses deuterium-based blue emitter materials—supplied by DuPont and LG Chemical—to improve blue light-emitting efficiency. Its precursors are supplied by Ruilian New Materials.

Besides established manufacturers like Tokuyama, Idemitsu Kosan, and LG, Chinese manufacturers are also beginning to enter into the market to supply functional layers, such as Laite’s Red Prime. Samsung and UDC are planning to commercialize blue phosphorescent materials in 2024 in order to address the lifetime issues of blue OLEDs. Many new technologies, such as South Korean materials manufacturer, Lordin’s, patented Zero Radius Intra-Molecular Energy Transfer (ZRIET) rely on the efficiency of energy transfer between the main host and dopant, which is highly dependent on the distance between them. When that distance approaches zero, the quantum efficiencies of the molecules will not be affected at all. Therefore, efficiency can be improved by controlling the speed of energy transfer between the internal molecules of the material. Lordin has synthesized a material that maintains the respective characteristics of the main and dopant materials as well as a high energy transfer rate, which is expected to produce OLEDs that will be four times more efficient.

TrendForce believes the next stage of mobile terminal products will shift from folding smartphones to smart wearables, IT, and automotive applications, which will place more stringent demand on OLED components. The layout of panel manufacturers is becoming clearer thanks to brand endorsements. LG, Samsung, and BOE are all aggressively competing for priority for the Tokki G8.7 evaporation machine to gain an advantage in expanding application. The accelerated commercialization of blue phosphorescent materials and more innovative technologies, such as Samsung’s vertical evaporation developed with ULVAC, eLeap lithography, and printing processes to improve the aperture ratio will help push the expansion of OLEDs in the display industry. Meanwhile, costs will become more competitive as more Chinese manufacturers enter the market.

TrendForce’s research shows that material shortages, logistical delays, and relief subsidies for the American people not only supported global TV panel shipments in 1H21, but also drove an extended rise in quotations. However, as end product inventory climbed, stocking momentum fell rapidly in 2H21, not only inducing a sluggish peak season, but also bringing about a 1H22:2H22 shipment ratio that deviated from historical precedent. Shipment volume was not the only performance statistic to fluctuate in 2021. Originally planned factory closures were also delayed due to market demand, again transforming the entire industry landscape.

Looking forward to 2022, the global display production capacity of large generational fabs in 2022 will continue to grow through OLED production capacity generated by Korean panel manufacturers, the extension of LCD production, and continuing injection of maximum production capacity into the market from certain LCD production lines originating from panel manufacturers in other regions. Thus, overall TV panel supply is expected to spike dramatically. Although demand in emerging markets has recovered, TV panel quotations are also more prone to manipulation by branded panel companies than in 2021. A certain amount of momentum is expected in the end market for the stocking of TV panels. However, considering continually rising shipping and logistics costs, the unresolved global inflation issue, and life gradually returning to normal will inhibit the shipment performance of TV sets, demand for panels will also see an impact.

Therefore, after considering a number of factors, TrendForce expects global TV panel shipments to reach 281 million units in 2022, with an annual growth rate of 4.3%. As panel makers continue to implement a strategy of increasing panel size and overall shipments increase, positive growth is expected in size of shipped area.

The current global Gen5 and above large generational fab LCD panel supply and demand model shows that the growth rate of demand area cannot keep up with the growth rate of supply area and the shortfall between supply and demand in 2022 will be larger than that in 2021, which also suggests that panel manufacturers will meet tougher challenges in 2022. It is worth mentioning that there are still several key factors to be observed in 2022. For example, the closing schedule of LCD production lines at Korean panel factories, the adjustment of TV and IT panel capacity allocation, and the impact of the pandemic and war on whole device demand and component supply will all be key indicators of display industry trends leading into 2022.

（Image credit: Samsung）