PER, EPS, PBR and BPS are calculated in-house from the last 4 quarters (2025Q3–2026Q2) · Dividend yield is based on ₩0 per share · Prices as of the 2026-10-02 close
LDT returned to consolidated profitability in 2025, but sharp quarter-to-quarter swings in 2026 leave the durability of the recovery as the key question.
2025 consolidated revenue reached KRW 11.05 billion with operating profit of KRW 306 million and net profit of KRW 1.24 billion, marking a return to profit after three years of losses
An operating loss of KRW 440 million in Q1 2026 was followed by a sharp rebound to KRW 874 million in Q2 2026, highlighting pronounced quarterly volatility
The core business is a two-track structure of OLED/LED display driver IC design and the IoT-based fire detection solution SafeMate (SSN division)
Major shareholder TSE Inc. participated in a December 2025 third-party share placement, raising its stake to 43.78% and providing R&D funding
The company maintains a no-dividend policy and market capitalization remains small, limiting trading liquidity
Founded in 1997, LDT is a fabless semiconductor company originally focused on developing, producing, and selling display driver ICs, which added an IoT-based disaster-prevention (SSN) business through its 2014 merger with Art System.
The semiconductor division supplies OLED and LED display driver ICs built on MCU, timing control, current/voltage driving, DC/DC, and graphic memory design technologies, holding the top market share in PM OLED driver ICs and maintaining a partnership with the world's largest AM-OLED customer.
The SSN division supplies the integrated fire and disaster early-detection solution SafeMate, which has been installed and operated across tens of thousands of sites including local governments, research institutes, large corporations, and energy storage systems.
The company also runs a Network Integration (NI) business providing bypass switches and TAP solutions. Headquartered in Ochang, North Chungcheong Province, LDT operates as a small-to-mid-sized venture company with additional sites in Daegu and Bundang.
Its customer base leans toward overseas finished-product makers, including Japanese clients, making revenue sensitive to inventory adjustment cycles in end markets.
The largest shareholder is TSE Inc., a semiconductor and display test equipment specialist, which raised its stake to 43.78% by participating in a December 2025 third-party share placement.
Competitively, LDT positions itself as a small fabless player differentiating through niche PM OLED expertise and customized customer support rather than head-on competition with large display driver IC makers.
| Quarter | Revenue | Operating profit | Op. margin |
|---|---|---|---|
| 2025Q2 | ₩3.2B | ₩400M | 11.4% |
| 2025Q3 | ₩2.9B | ₩100M | 4.6% |
| 2025Q4 | ₩3.1B | ₩200M | 6.1% |
| 2026Q1 | ₩1.7B | -₩400M | −26.3% |
| 2026Q2 | ₩3.9B | ₩900M | 22.7% |
| Year | Revenue | Operating profit | Net income (parent) | Op. margin | ROE | Debt-to-equity |
|---|---|---|---|---|---|---|
| 2022 | ₩11.7B | ₩1.5B | ₩2B | 12.7% | 12.7% | 11.5% |
| 2023 | ₩8.9B | -₩300M | -₩100M | −3.9% | −0.9% | 20.6% |
| 2024 | ₩10B | -₩800M | -₩300M | −8.3% | −1.8% | 14.9% |
| 2025 | ₩11B | ₩300M | ₩1.2B | 2.8% | 6.1% | 11.2% |
Consolidated basis (financial statements including subsidiaries) · Final figures from DART filings · Net income attributable to owners of the parent · Data as of 2026-08-23
On a confirmed basis, LDT posted 2022 revenue of KRW 11.73 billion, operating profit of KRW 1.48 billion, and net profit of KRW 1.95 billion, for a 12.7% operating margin, before revenue fell to KRW 8.93 billion in 2023 alongside an operating loss of KRW 349 million and a net loss of KRW 140 million.
In 2024, revenue recovered to KRW 10.03 billion, but the operating loss widened to KRW 836 million, extending losses into a second consecutive year.
In 2025, revenue reached KRW 11.05 billion with operating profit of KRW 306 million and net profit of KRW 1.24 billion, marking a return to profitability after three years, with the operating margin improving to 2.8%.
Quarterly, Q2 2025 showed solid results with revenue of KRW 3.15 billion, operating profit of KRW 360 million, and net profit of KRW 741 million, but Q3 2025 revenue fell to KRW 2.87 billion with operating profit shrinking to KRW 130 million.
Q4 2025 revenue rose slightly to KRW 3.13 billion with operating profit of KRW 191 million and net profit of KRW 542 million, but Q1 2026 revenue plunged to KRW 1.67 billion, swinging back into an operating loss of KRW 440 million and a net loss of KRW 217 million.
Q2 2026, however, saw revenue jump to KRW 3.85 billion with operating profit of KRW 874 million and net profit of KRW 949 million, the strongest single quarter in the recent five-quarter window.
Such quarterly fluctuations reflect the customer-order concentration typical of a small fabless supplier along with timing differences in the recognition of fire-detection installation contracts.
Separate-entity data cited by FnGuide for the nine months through Q3 2024 also showed revenue up 47.4% year-on-year on higher display driver IC and SSN sales, with the operating loss narrowing 52%, suggesting the 2025 turnaround extended a recovery trend already underway.
In the display driver IC market where LDT operates, large fabless players such as Samsung LSI, LX Semicon, Silicon Works, and Taiwan's Novatek dominate the mainstream segment, positioning LDT as a small niche supplier with competitiveness concentrated in PM OLED and specialized compact driver ICs.
The downstream wearable and small-display finished-goods market is sensitive to global economic conditions and inventory adjustment cycles, with order flow from key customers, including those in Japan, directly affecting revenue.
Meanwhile, the IoT-based fire detection and disaster-prevention market appears to be growing, driven by stricter safety management for aging buildings, expanded industrial safety obligations, and the rise of new fire-risk facilities such as EV charging stations and logistics warehouses.
Interest in this market is growing for wireless detectors linked to fire-fighting equipment and AIoT-based early-detection solutions, and trade press reports indicate that LDT's SafeMate is expanding adoption particularly across industrial and public-sector sites.
Major shareholder TSE Inc. is a back-end semiconductor test component maker whose results have improved sharply on rising HBM and DRAM probe card demand tied to the AI semiconductor boom; while its core business differs from LDT's, the two are linked through a controlling shareholder relationship.
Overall, LDT is not a direct beneficiary of the broad semiconductor upcycle but occupies a hybrid position combining a structural fire-safety demand driver with a niche foothold in the display driver IC market.
The company launched a new 900MHz LoRa-based product in the first half of 2025, describing it as an address-based system leveraging existing fire-fighting infrastructure that it expects to serve as an alternative safety-management solution for older buildings.
Proceeds of roughly KRW 4.015 billion raised through a December 2025 third-party share placement are earmarked for R&D spending on semiconductors and IoT sensors, with the company disclosing plans to invest about KRW 2.0 billion in 2026 and roughly KRW 2.015 billion in 2027.
Major shareholder TSE Inc. participated in this placement, receiving 1,669,599 new shares at an issue price of KRW 2,405, which substantially increased its ownership stake.
Commentary has noted a gradual recovery in the semiconductor division centered on major customers including those in Japan, while the SSN division appears to be broadening its base amid rising demand for fire-detection solutions across public and industrial sites.
However, as illustrated by the swing from a large loss in Q1 2026 to a sharp rebound in Q2 2026, quarterly results can diverge significantly depending on the timing of customer orders and contract recognition.
Going forward, key points to watch include whether the raised R&D funds translate into new products and technologies that broaden the revenue base, and whether the expanding installed base of the SSN business converts into stable recurring revenue.
The share price trades at a level that appears discounted relative to net asset value, sitting below book value per share.
Factoring in earnings over the most recent four quarters (Q3 2025 through Q2 2026), the price-to-earnings ratio has come down compared with the prior period of continued losses, reflecting the return to annual profitability in 2025 and the earnings recovery seen in Q2 2026.
That said, the recurrence of a single-quarter loss in Q1 2026 means interpretation of this ratio depends on whether the recent improvement proves durable.
On the dividend front, no cash dividend has been paid in the most recent fiscal year, continuing a no-dividend policy that is not uncommon among small fabless semiconductor peers.
Given the small market capitalization and limited trading activity typical of a micro-cap stock, liquidity factors should also be weighed when interpreting valuation metrics.
PER, EPS, PBR and BPS are all calculated in-house (the same method as Naver and Toss) · Dividend yield = cash dividend per share from DART filings (supplemented by KRX) ÷ current price · As of 2026-08-23
LDT posted a consolidated operating profit of KRW 306 million and net profit of KRW 1.24 billion in 2025, ending two straight years of losses in 2023-2024. Q2 2026 delivered the strongest results of the recent stretch, with operating profit of KRW 874 million and net profit of KRW 949 million. Continued improvement could support balance sheet stability.
The SSN division's SafeMate solution is deployed across numerous sites including local governments, large corporations, and energy storage systems, aligning with trends toward stricter safety management of aging buildings and industrial safety regulation.
The lineup was also expanded with a 900MHz LoRa-based product launched in the first half of 2025. As long as social attention to fire safety persists, there is room for this business to broaden its base.
Major shareholder TSE Inc. raised its stake to 43.78% by participating in a December 2025 third-party share placement, providing R&D funding earmarked for semiconductor and IoT sensor development to be executed through 2026-2027. The increased ownership by the controlling shareholder is a fact relevant to management stability.
Quarterly results show extremely wide swings, from an operating loss of KRW 440 million in Q1 2026 to a rebound to KRW 874 million in operating profit in Q2 2026.
This appears to reflect volatility tied to customer order concentration and contract recognition timing, making future quarterly results difficult to predict.
Consolidated revenue, which stood at KRW 11.73 billion in 2022, fell to KRW 8.93 billion in 2023 and, even by 2025, reached only KRW 11.05 billion, still not fully recovering to 2022 levels. Stagnant revenue growth could also constrain the sustainability of earnings improvement.
With a very small market capitalization and an ongoing no-dividend policy, the stock exhibits the low trading activity and limited shareholder returns typical of a micro-cap, which can amplify volatility in valuation metrics.
The semiconductor division is understood to have exposure to specific customers, including those in Japan, meaning revenue can be directly affected if finished-goods makers undergo inventory adjustments or demand slows. The revenue decline and widened operating loss in the separate-entity Q1 2025 results illustrated this risk.
The display driver IC market includes large fabless competitors such as Samsung LSI, LX Semicon, Silicon Works, and Taiwan's Novatek, meaning price and technology competition can persist. As a small player, LDT bears the burden of defending its niche market position.
Major shareholder TSE Inc.'s stake expanded significantly from 29.72% in 2020 to 43.78% in December 2025. As ownership concentration rises, any future changes in management policy or governance structure warrant ongoing monitoring for their impact on minority shareholders.
A point to check the Q3 2026 quarterly report to see the direction of results following the Q1 2026 loss and Q2 2026 profit.
Check whether the roughly KRW 2.0 billion in R&D spending planned for 2026 from the December 2025 capital raise is executed and how new product development progresses.
Monitor trade press or disclosures on new orders and installation expansion for SafeMate to gauge the pace of SSN business growth.
Check for any additional disclosures on stake changes by major shareholder TSE Inc. or related affiliate policy.
Confirm through the 2026 annual business report (audited annual report) whether annual profitability is sustained and the scale of revenue recovery.
LDT achieved its first consolidated annual profit in three years in 2025 and posted its strongest recent-period result in Q2 2026. However, as illustrated by the large loss in Q1 2026, quarterly results show significant variability, making it premature to judge the durability of the earnings improvement.
The business consists of two distinct pillars—display driver ICs and IoT-based fire detection solutions—with the latter underpinned by structural demand from tightening safety regulations.
Notably, major shareholder TSE Inc. increased its stake to 43.78% by participating in a December 2025 capital raise, simultaneously supporting R&D funding and governance stability.
Revenue scale has not yet fully recovered to 2022 levels, and given the stock's micro-cap characteristics, caution is warranted when interpreting liquidity and valuation metrics.
Going forward, the consistency of quarterly results, the conversion of the SSN business's installed base into recurring revenue, and the outcomes of R&D investment will likely serve as key indicators of the company's direction.
Report written 2026-09-05 · Data as of 2026-09-04
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