Global semiconductor giants are concentrating their R&D efforts on advanced packaging technologies to drive performance enhancements. According to a report from Commercial Times, as packaging technology progresses from 2.5D to 3D, chip stacking technologies have become a showcase for the competitive prowess of major companies.

“Hybrid Bonding” is seen as the key technology for future chip connections. In addition to international companies like Applied Materials and Besi actively positioning themselves, Taiwanese companies led by TSMC, including Gallant Micro, MPI Corporation, E&R Engineering Corporation, C SUN, Saultech, and Grand Process Technology, are also developing and seizing opportunities in Hybrid Bonding.

The report also cited industry sources, pointing out that Grand Process Technology has been supplying TSMC since the inception of InFO (Integrated Fan-Out Packaging). It is revealed that Grand Process Technology is also actively participating in future SoIC (System on Integrated Chips) advanced packaging, focusing on wafer cleaning and photoresist removal in etching processes.

It is indicated by the report that Grand Process Technology’s capacity will be operating at full speed until the first quarter of next year, with lead times extended to nine months. Last year’s orders are currently being installed gradually, with most concentrated on advanced packaging.

Semiconductor equipment manufacturer C SUN and its investment company Gallant Micro are currently investing in Hybrid Bonding-related equipment. C SUN primarily focuses on developing the best solutions for permanent bonding to enhance yield rates. Meanwhile, Gallant Micro leverages its relative advantage in chip sorting machines within its product line.

MPI Corporation, a testing interface vendor, has also entered the initial stages of inspection and analysis for Hybrid Bonding processes. Development of related products is nearing completion.

E&R Engineering Corporation also emphasizes that its top-tier plasma cleaning equipment is currently aimed at achieving high cleanliness of bonding surfaces to enhance adhesion.

Saultech Technology holds a positive outlook on the future market trends of Hybrid Bonding as well. The company has introduced equipment that corresponds to both Hybrid Bonding and Fan-Out technologies. Saultech has independently developed key technologies including bonding and die cleaning processes.

Read more

• [News] Samsung and SK hynix to Implement Hybrid Bonding with 3D DRAM
• [News] The HBM4 Battle Begins! Memory Stacking Challenges Remain, Hybrid Bonding as the Key Breakthrough
  

(Photo credit: Applied Materials)

As various TV manufacturers such as Samsung, LG, and TCL announced their new models equipped with Mini LED backlights at CES 2021, TrendForce’s 2021 Mini LED New Backlight Display Trend Analysis report shows that total Mini LED chip revenue from Mini LED backlight TVs to potentially reach US$270 million in 2021, as manufacturers gradually overcome technological bottlenecks and lower their overall manufacturing costs, according to TrendForce’s latest investigations.

Mini LED backlight TVs possess a highly cost-effective competitive advantage, as Mini LED backlight costs for the entry-level segment are only 50% higher than traditional LCD equivalents

TrendForce further indicates that, with regards to TV backlight technologies, the cost of Mini LED solutions is about two to three times lower than that of white OLED and entry-level, direct-lit LCD solutions. This cost difference therefore serves as Mini LED technology’s competitive advantage over its competitors in display backlight adoption. At the moment, high-end TVs contain about 16,000 Mini LED chips per TV, divided into 2,000 local dimming zones.

In this market segment, PM (passive matrix) Mini LED TV panels with BLU (backlight unit) still cost about 15% less than OLED TV panels and therefore hold a cost advantage. On the other hand, in the mid-range TV segment, each TV contains about 10,000-12,000 Mini LED chips and 500 local dimming zones, meaning the cost of Mini LED backlight integration in this market segment is about a mere 50% more than entry-level, direct-lit LCD backlight units, making Mini LED a viable alternative to traditional LCD solutions in this segment too. Given the high cost-effectiveness of Mini LED backlight units, TV manufacturers are therefore likely to adopt them as a viable technology and initiate an industry-wide competition over Mini LED TV specs this year.

HDR and 8K resolution will be the two mainstream features of high-end TVs this year. With regards to Korean brands, Samsung’s Neo QLED Mini LED TV and LG’s QNED Mini LED TV, both unveiled at CES this year, are equipped with Mini LED backlights as a performance-enhancing technical feature. These TVs feature not only 8K resolution, but also Mini LED backlight units, which require more than 20,000 Mini LED chips (divided across more than 1,000 local dimming zones, with more than 1,000 nits in peak brightness), in addition to passive matrix FALD technology, which allows for contrast ratios of 1,000,000:1, a significant improvement that puts these TVs on almost equal footing with OLED TVs in terms of image quality. At the same time, China-based TCL is also set to release its OD Zero Mini LED TV, which has comparable specs with Korean offerings and is also equipped with Mini LED backlight units. Going forward, more and more TV manufacturers, such as Hisense and Xiaomi, are expected to participate in the burgeoning Mini LED backlight TV market.

The pace of optimizing Mini LED chips, backplanes, and driver ICs will be key to the Mini LED industry’s rapid expansion

As various manufacturers successively release their Mini LED backlight TVs this year, related companies in the supply chain are expected to benefit as a result. Currently, there are multiple major suppliers of Mini LED components on the market: Chip suppliers include Taiwanese (Epistar and Lextar), Chinese (San’an and HC SemiTek), and Korean (Seoul Semiconductor) companies. Testing and sorting companies include FitTech, Saultech, and YTEC. SMT companies include Taiwan-based Lextar and China-based Hongli Zhihui. Driver IC suppliers include Taiwanese (Macroblock, Elan, Parade, Himax, and Novatek) and Chinese (Chipone) companies. Backplane suppliers include Tawanese (Apex and Zhen Ding Tech) and Korean (Young Poong Group) companies. Panel suppliers include SDC, LGD, AUO, Innolux, BOE, and CSOT.

TrendForce believes that Mini LED backlight displays currently possess a competitive advantage over OLED displays due to the former’s 15% comparatively lower cost. Ultimately, the future development and profitability of the Mini LED backlight market in the long run will depend on the continued optimization of components that account for a relatively higher allocation of backlight costs, including Mini LED chips, Mini LED backplanes, and driver ICs.

For more information on reports and market data from TrendForce’s Department of Optoelectronics Research, please click here, or email Ms. Grace Li from the Sales Department at graceli@trendforce.com