Taiwan's Display Industry: The Shift from a Single TFT-LCD to Micro LED

30-Second Overview: Taiwan's optoelectronics industry took shape in the 1970s; the Industrial Technology Research Institute (ITRI) actively invested in display technology starting in 1987, completing Taiwan's first 10.4-inch TFT-LCD panel in 1996. By 2002, Taiwan had become the world's second-largest panel producer and supplier, with a market share exceeding 30%. Today, this industry, once driven by large-size LCDs to pursue scale, is shifting its competitive arena toward Micro LED, smart in-vehicle displays, transparent displays, panel-level packaging, and system integration. ¹

How a Single Glass Substrate Became an Entire Industry Chain

Taiwan's display industry did not emerge suddenly from a single panel manufacturer. According to ITRI's retrospective analysis, Taiwan's optoelectronics industry began developing in the 1970s and subsequently built a complete industry chain. ITRI invested in display technology in 1987, establishing within seven years a display industry chain comparable to that of the semiconductor sector. The key to this history lies not merely in producing a panel, but in gradually connecting components, materials, processes, equipment, and downstream products. ¹

Image: First MicroLED.jpg; Author: Santasgift; License: CC BY-SA 4.0; Image Page. The image is a schematic illustration of Micro LED technology and does not represent products from Taiwanese companies or evidence of the industry history discussed in this article.

The milestones listed by ITRI give concrete shape to this process of "connecting." In 1996, ITRI completed Taiwan's first 10.4-inch TFT-LCD panel and transferred the technology to companies such as China Vision Group (formerly Formosa Plastics Group's display division), Nan Ya Plastics, China Steel, and Quanta Computer. In 2000, ITRI, together with Acer Display Technology, China Vision Group, HannStar, E Ink, Unipac Optoelectronics, Chi Mei Electronics, and Quanta, jointly established the Taiwan TFT LCD Association, creating a collaboration platform for upstream and downstream industries. ¹

The Taiwan Institute of Economic Research (TIER) places another industrialization milestone in 2000: Delta Electronics' predecessor, Delta Display Technologies (later AUO), produced Taiwan's first 17-inch TFT-LCD panel module; in February 2001, this production line began mass production, which TIER refers to as Taiwan's first fourth-generation factory. These two time points are not contradictory: the former is a milestone in R&D and technology transfer, while the latter marks the industrialization node where panel modules entered mass production on the line. ²

Source: Industrial Technology Research Institute, Taiwan Institute of Economic Research

Scale Was Once the Answer

2002 was the moment Taiwan's panel industry was most easily understood at a glance. ITRI's industry history data indicates that Taiwan became the world's second-largest panel producer and supplier in that year, with a market share exceeding 30%, and the display industry's output value reached the trillion-dollar scale. ¹ In 2018, the Presidential Office reviewed the industry, citing government statements at the time that Taiwan's panel output value remained second in the world, reaching NT$1.35 trillion in the previous year and supporting over 100,000 jobs. This is historical data from 2018, not current statistics, but it illustrates how panels once became the main pillar of Taiwan's industrial policy and employment structure. ³

In 2017, the Center for Science and Technology Policy Research and Information at the National Applied Research Laboratories (NARL) compiled notes from a Micro LED process and equipment symposium involving over 50 companies and nearly 100 panel, LED, solution, equipment, and material experts. This scene demonstrates that the industry's transformation was never about panel manufacturers simply swapping products; rather, panel, LED, equipment, material, and solution companies had to enter the field together. The article also reminded readers that Micro LED still faced challenges such as mass transfer, repair, particulate matter, and optoelectronic testing; judgments regarding the timeline for future commercialization were industry perspectives from the 2017 event and should not be treated as realized predictions. ⁴

Source: Industrial Technology Research Institute, NARL Center for Science and Technology Policy, Presidential Office, Nanomaterials

📝 Curator's Note: Panels are not a subsidiary story to semiconductors. They similarly rely on cleanrooms, materials, process integration, precision equipment, and long-term capital investment, yet they place technological results directly into objects people see every day: TVs, phones, car windows, and e-paper signs. What is most memorable about Taiwan's display industry is not just that it once ranked second in the world, but that it demonstrated how Taiwan transformed the technology of research institutions into manufacturing capabilities shared by many companies. This is why the next transformation will not be completed by a single panel manufacturer alone.

LCD's Success Brought the Cost of Scale Competition

The difficulties of the panel industry are the flip side of its past success. A 2021 industry analysis by TIER indicates that after 2018, technological improvements and capacity expansion by Chinese panel makers led to oversupply in the global market; data compiled in the article shows that China's share of LCD panel capacity reached 33.7% in 2018 and exceeded 50% in 2020, creating competitive pressure on Taiwan. These figures belong to the historical analysis compiled in TIER's 2021 article and cannot be misappropriated as 2026 market shares. ²

The same analysis also points out that in 2021, Micro LED was still in the early stages of commercialization, with cost, mass transfer, and testing technologies remaining challenges. In other words, the industry's shift to Micro LED does not end with finding a prettier screen material; it must address how to precisely place millions of tiny light-emitting components, how to test them, how to repair them, and how to maintain yield rates across different sizes and applications. ²

This turning point changed the nature of the questions asked. In the LCD era, the question was closer to "Can we build larger factories and produce more panels?" In the Micro LED era, the question is "Can we integrate chips, backplanes, transfer, testing, driving, materials, and applications into a deliverable system?" Taiwan's accumulated process and supply chain capabilities are therefore not just historical assets but necessary conditions for entering the next stage; however, they do not guarantee commercial success on their own.

Micro LED: Not Changing the Backlight, But Rewriting the Panel's Composition

ITRI's technical description of Micro LED includes characteristics such as high brightness, high efficiency, fast response, no need for a backlight, and self-emissive properties. ITRI also states that this technology can be used for small-pitch displays, transparent displays, AR/MR, wearable devices, and in-vehicle displays, and has integrated Micro LED onto different substrates including glass, flexible substrates, silicon, and PCBs. ⁵

These applications are important because they no longer treat the panel merely as a flat surface. Curved surfaces in cars, store windows, museum display cases, and non-rectangular surfaces of wearable devices all require displays to simultaneously handle brightness, transparency, shape, durability, and interactivity. The display has changed from a "component that broadcasts images" to "part of the venue," and industry value has thus extended from single panel prices to the integration of design, control, sensing, content, and services.

ITRI's technology history shows that the Micro LED Alliance was established in 2016, a technical breakthrough in Micro LED mass transfer to PCBs was completed in 2020, and in 2022, collaboration with 50 supply chain companies, including NCE and Jorjin, developed high-precision full-color Micro LED display modules. Application directions include TVs, indoor displays, flexible in-vehicle panels, flexible wearable devices, and smart glasses. This path shows that Micro LED development is not a single research result, but a joint advancement from alliances and processes to applications. ¹

Panel Makers Start Selling "Scenarios"

AUO's own Micro LED technology page states that Micro LED can mass-transfer millions of tiny LED chips onto LTPS backplanes and be used for in-vehicle, wearable, transparent windows, and foldable displays. The 14.6-inch foldable Micro LED display listed on AUO's page has a folding hinge radius of 4 mm and a pixel density of 202 ppi. These are AUO's technical and product descriptions; this article treats them as corporate claims of capability rather than independent test conclusions. ⁶

Image: The Wall (Samsung MicroLED display).jpg; Author: Santasgift; License: CC BY-SA 4.0; Image Page. The image is an illustration of an exhibition scenario and does not represent Taiwanese manufacturing or products from Taiwanese companies; brand names and trademarks remain protected by third-party rights.

Innolux, on its official technology page, states that its Micro LED is driven by LTPS backplane technology, laying out technologies such as color conversion, selective mass transfer, mass repair, seamless splicing, and direct fine patterning; the company divides application directions into smart entertainment, smart mobility, smart healthcare, and smart retail. These technical terms indicate that competition in the panel industry has extended from "can the screen light up" to "can the process be stably replicated, can modules be spliced, and can products enter different venues." ⁷

In September 2025, the Taiwan Display Industry United Association (TDUA) reported on a Micro LED application event co-hosted by the Industrial Technology Research Institute and the Association: five domestic companies shared their experiences, and 22 potential demand companies participated in matchmaking. Participating fields included displays, retail, entertainment, healthcare, mobility, and system integration. The exhibitions in the report were no longer just a single screen, but combinations of applications including transparent displays, naked-eye 3D, mirror displays, adjustable transparency, and AI mass transfer. ⁸

Here, a subtle but important change can be seen: panel makers are attempting to sell "scenarios," not just "panels." A transparent window requires a display, optical structure, and retail context to function together; smart in-vehicle displays require displays to match car interior curves, sunlight, and information interfaces; medical displays require reliability and workflow to be placed within the same product definition. Technology only becomes an industry when it enters the venue, transforming from a demonstration piece into an industrial reality.

The Direction for 2026: Stepping Out of the Panel Factory

A Micro-LED industrialization review published in Nanomaterials in 2025 indicates that the industry currently lacks standardized Micro LED production processes; major manufacturers adjust equipment and materials according to product applications. The study records that before 2021, most displays were smaller than 10 inches; although there were spliced displays exceeding 100 inches from 2022 to 2024, single panels were mostly still around 12 inches. In 2025, AUO displayed a 42-inch panel manufactured on a Gen 4.5 substrate. This research clarifies the difficulty of "venue integration": the next stage of displays lies not only in screen size, but in whether processes, materials, and costs can form repeatable industrial flows. ⁹

Therefore, panel-level technologies are being re-evaluated: large-area, precision coating, thin-film, material, and packaging capabilities may find markets outside of displays. This does not mean Taiwan has successfully entered all new fields, but rather that the next question for the display industry has expanded from a specification competition for a single product to whether equipment, processes, and system solutions can be delivered together. ⁹

Can This Turn Hold Steady?

Taiwan's display industry has already proven once: government research institutions can develop display technology, enterprises can turn it into production lines, and the supply chain can turn a single panel into an entire industry. The second-place global ranking in 2002 was the first time this path was seen by the world. ¹

But the next competition will not merely be a重现 of that history. The scale war of LCDs gave China larger capacity; Taiwan cannot answer with merely increasing glass substrate area. Micro LED still faces challenges such as mass transfer, testing, cost, and yield rates, as clearly written in TIER's 2021 analysis. ² Therefore, the real question is not whether Taiwan can announce "leading again" on a certain day, but whether it can combine existing panel, LED, semiconductor, equipment, and system integration capabilities into products that customers are willing to adopt long-term.

The five sharing companies and 22 demand companies from 2025 events, along with the 42-inch display recorded in academic reviews and the non-standardized production processes, reveal an industry scene still being assembled, not a completed declaration of victory. ^{8 9} Taiwan's display chapter may not be written by the single largest panel, but by a group of companies that can make transparent windows, car interior curves, e-paper signs, medical interfaces, and new packaging truly work.

References

Further Reading:

• Semiconductor Industry — The shared process, materials, and precision manufacturing foundation between displays and semiconductors.
• Science Park Development — The spatial context of the optoelectronics and semiconductor industries forming industrial clusters in Taiwan.
• justfont and Taiwan Typeface Development — Another path of Taiwan's display culture from hardware displays to typefaces and reading interfaces.

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