Three Sentences and a Currency Effect

In 1975 a customer handed Nitto Denko a polarizer and asked whether the company could coat it with adhesive. Nitto had been coating things with adhesive since 1946, when, its Tokyo works gone in the war and the head office relocated to Ibaraki in Osaka, it began producing black tape for electrical wiring. It said yes. Two years later, in 1977, it had developed a polarizer of its own — the company's account is that the appetite to make the thing, rather than merely stick to it, grew out of the coating work. The customer is not named.

The firm was established on 25 October 1918 in Osaki, Tokyo, as Nitto Electric Industrial, for the purpose of making electrical insulating materials domestically after the First World War cut off European and American supply. Insulating varnish, varnish cloth for transformers. Black tape arrived in October 1946. The consumer arm — dry cells, magnetic tape — was separated as Maxell in February 1961. Production of polarizing film for liquid crystal displays began in April 1975. Twenty-nine years from the tape to the film.

The obvious next question is how much of Optronics is polarizing film, and the annual report does not answer it. Optronics contains information fine materials, the group the note says includes optical film, and circuit materials, where the report names high-precision boards and circuit integrated suspensions. The annual report for the year to March 2026 gives each of them a revenue line, ¥384,855 million (US$2,349.5 million) and ¥139,742 million (US$853.1 million) from outside customers. It gives neither of them a profit line. Profit stops at the segment, ¥149,871 million (US$915.0 million), and polarizing film has no number of its own anywhere in the document.

Customs data does not close the gap either. Japan's trade statistics carry a nine-digit code, 900120000, which sits under HS heading 9001.20, the heading generally understood to cover sheets and plates of polarizing material — generally understood, because the e-Stat table shows its codes as bare numbers with no Japanese product names attached. The export table (statistical table ID 0003425293, published 12 March 2026) carries 6,443 item codes and 229 countries, and its four dimensions are item, quantity-and-value, country and year. There is no end-use dimension. The annual axis begins in 2021.

So two systems of record touch this material and neither is built for the question. The segment note is organized by internal management units, and those units were re-cut in the year to March 2026. The change first surfaces in the interim report for April to September 2025, which restates the prior period, keeps the same three reporting segments and an Other, and does not say which business moved between which segments; the annual report repeats the change and the restatement and does not say either. The other record, described above, is a nine-digit number with a country attached. It cannot be split by application, and nothing stops other uses of the same material from sitting inside it.

Then the year to March 2026, reported on 27 April 2026. Group revenue ¥1,028,171 million (US$6,277.0 million), up 1.4%; operating profit ¥183,615 million (US$1,121.0 million), down 1.1%. Optronics segment revenue fell 2.6% to ¥527,812 million (US$3,222.3 million) and its segment profit fell 13.4% to ¥149,871 million (US$915.0 million). The plan for the year to March 2027 has Optronics revenue up 2.3% and its profit down 0.1% — growth in the top line, flat at the bottom, on a stated assumption of ¥153.0 to the dollar.

Underneath the group's 1.1% the segments do not move by 1.1%. Cost of sales took 62.0% of revenue against 61.0%. Optronics profit fell ¥23,246 million (US$141.9 million); Industrial Tape rose ¥5,798 million (US$35.4 million) to ¥51,662 million (US$315.4 million), a 14.1% margin on ¥366,607 million (US$2,238.1 million); Human Life's loss narrowed by ¥6,677 million (US$40.8 million) to ¥5,041 million (US$30.8 million); and a segment called Other, whose revenue for the year was ¥11 million (US$67,000), lost ¥5,258 million (US$32.1 million) less than before. The three improvements come to ¥17,733 million (US$108.3 million). The four segments sum to ¥189,521 million (US$1,157.0 million), the income statement says ¥183,615 million (US$1,121.0 million), and the corporate line the report gives for the difference is ¥5,905 million (US$36.1 million), a million short of the subtraction.

The company's own account of the decline is three sentences long. Optical film demand rose on firm production of high-end notebooks and tablets. Optical film for LCD smartphones fell because of a strategic withdrawal from that business. Process protection film prices were cut in connection with material rationalisation. Information fine materials went from ¥407,654 million (US$2,488.7 million) to ¥386,234 million (US$2,358.0 million). Demand and deliberate pruning move the same line, in opposite directions, and the disclosure contains no utilisation rate, no volume and no pricing figure with which to separate them.

Those two product groups then appear twice, with different numbers, in documents seven weeks apart. The figure for information fine materials quoted above, ¥386,234 million (US$2,358.0 million), is the one given with the results of 27 April 2026. The annual report, filed on 17 June, gives ¥384,855 million (US$2,349.5 million) for the same product group and the same year, ¥1,379 million (US$8.4 million) less, with circuit materials at ¥139,742 million (US$853.1 million), up 5.5% from ¥132,417 million (US$808.4 million). Neither is wrong. The annual report's note counts revenue from external customers: its two lines sum to ¥524,597 million (US$3,202.7 million) and the note's own total is ¥524,598 million (US$3,202.7 million). Segment revenue is ¥527,812 million (US$3,222.3 million), which the report says includes ¥3,213 million (US$19.6 million) sold to the rest of the company, where subtracting the external total gives ¥3,214 million (US$19.6 million). The April figure and the June one differ in the shape of that same distinction, and no document performs the reconciliation. Everything here is truncated to the million, which is where the stray million yen keeps coming from.

One series in the filing moves with units, or nearly, and the company connects it to nothing. Production is stated at converted selling value: Optronics produced ¥511,311 million (US$3,121.6 million), 82.1% of the prior year, and sold 97.5% of the prior year. Industrial Tape produced 104.2% and sold 104.5%. Human Life produced 110.1% and sold 109.3%. Only Optronics separates, by 15.4 points. Group production, ¥888,564 million (US$5,424.7 million), is 86.4% of the ¥1,028,171 million of group sales, and the filing explains neither the level nor the change. A production figure converted to selling value is not a unit count. It is the closest the disclosure comes to one.

So how much of the ¥23,246 million (US$141.9 million) was the yen. The company gives one number: ¥8.1 billion (US$49 million) of operating profit, at an average of ¥150.2 to the dollar, 1.7% stronger than the year before, for the group and not for the segment. If all of it landed in Optronics, which nothing in the filing says, it covers 35% of the fall. The notes then give a second currency number that is not the first — a 1% stronger yen against dollar exposure moves pre-tax profit by ¥1,124 million (US$6.9 million) — where dividing the management figure by its 1.7 points gives ¥4,765 million (US$29.1 million) a point, four times as much. The sensitivity, the company says, excludes translation of overseas revenue and expenses and is not a statement about consolidated results, which is a careful way of saying the two count different things.

The half-year report puts the first-half currency effect at ¥10.5 billion (US$64 million), measured against a rate of ¥146.4, 4.7% stronger than the same half a year earlier, where the full year is measured at ¥150.2 and 1.7%. Both are stated as an effect on group operating profit, and neither document says how it was computed — translation only, or transaction effects too — so the ¥2.4 billion (US$15 million) that comes back in the second half is a subtraction performed here and not by the company. Optronics profit fell ¥19,050 million (US$116.3 million) in the first half and, by the same kind of subtraction from the full year, ¥4,196 million (US$25.6 million) in the second, both on the restated basis, the only basis either document offers. Eighty-two per cent of the year's decline happened before October.

The risk section does not mention a shift to OLED, or thinner panels, or displays that need no polarizer. It mentions commoditisation of embedded components, market maturity, competitors entering, US tariff policy, and semiconductors going short because of AI demand. OLED appears elsewhere in the same document, under research and development, as a market spreading from phones into tablets, notebooks and cars. Raw material risk is petroleum-derived supply and the Strait of Hormuz; the word monomer does not appear at all.

Meanwhile the plan attaches ¥39.0 billion (US$238 million) to a single site, a next-generation works at Toyohashi, as a joint investment by Industrial Tape and information fine materials, for electro-release tape and optically clear adhesive, at capacity 1.7 times the year just ended. The deck does not separate that figure from its theme totals, so it may sit inside them. Group capital expenditure was ¥92,976 million (US$567.6 million) and then ¥86,841 million (US$530.2 million) on an accrual basis, of which Optronics took ¥47,875 million (US$292.3 million) and then ¥43,628 million (US$266.3 million), down 8.9%. The cash flow statement calls the same year's spending ¥96,607 million (US$589.8 million), ¥9,766 million (US$59.6 million) more, and the two are not interchangeable.

The three-year plan published on 29 May 2026, Nitto RISE 2028, raises the investment theme named information tape, ITO film and polarizing film from ¥55.0 billion (US$336 million) to ¥83.0 billion (US$507 million) or more, inside total capital expenditure of ¥300–400 billion (US$1.8–2.4 billion) against ¥263.3 billion (US$1,607 million) over the previous three years. Every theme figure carries or more and no ceiling. The same deck sorts polarizing film into three tiers at once: automotive polarizers and the adhesive that goes with them at the top, wide-viewing-angle polarizers in the middle, television polarizers at the bottom, where the earnings are royalties rather than manufacture. The bottom of the same slide names withdrawal, exit and divestment, and names no product; the withdrawal from LCD smartphone optical film is in the annual report's account of the year, not in the deck. The polarizer is being funded.

Where the money comes from is less ambiguous than what it is called, although Japan comes in two sizes. Overseas revenue was 86.1% of the total, with China alone at ¥420,049 million (US$2,564.4 million), or 40.9%. Japan is ¥142,657 million (US$870.9 million) in the note that counts by customer location and ¥172,839 million (US$1,055.2 million) in the note that counts by the location of the selling company: same country, same document, ¥30,182 million (US$184.3 million) apart. Regional profit is not disclosed at all. The single window is a subsidiary large enough to require its own line — Shanghai Nitto Optical, revenue ¥192,507 million (US$1,175.3 million), or 18.7% of the group, profit ¥10,489 million (US$64.0 million), a 5.4% margin against the 13.0% the group reports for itself — and what that gap measures depends on transfer pricing the filing does not give.

Last year one customer group crossed the 10% disclosure threshold, at ¥106,899 million (US$652.6 million), spanning Optronics and Industrial Tape, unnamed. This year the filing says no customer reached 10% and drops the table; the document shows no earlier period, so how long the group had been visible is not in it. The threshold moves with revenue: 10% of ¥1,028,171 million (US$6,277.0 million) is ¥102,817 million (US$627.7 million), so a fall of ¥4,082 million (US$24.9 million), or 3.8%, was enough to remove the customer from the disclosure. It may have fallen much further. The filing does not say, and does not say why, and the group is back inside a number that contains everyone else.

The plan asks for ¥220.0 billion (US$1,343 million) of operating profit in the year to March 2029, at a 20% margin, from ¥183,615 million (US$1,121.0 million) at 17.9%. Profit compounds at 6.2% a year over the three years to get there. The revenue is not printed, but 220,000 divided by 0.20 is ¥1.10 trillion (US$6.7 billion), which compounds at 2.3% from ¥1,028,171 million (US$6,277.0 million). Hold the margin still and that revenue yields ¥196.9 billion (US$1,202 million); the other ¥23.1 billion (US$141 million) of the ¥36.4 billion (US$222 million) increase has to come out of the margin. And because the 20% is printed as a whole number, the revenue it implies is a range about ¥55 billion (US$336 million) wide.

The same deck prints a profit mix for that year: Optronics 65%, Industrial Tape 30%, Human Life 5%, on a basis that excludes the corporate line and any segment losing money. It does not print the mix for the year just reported. Put that year on the same exclusion and Optronics is ¥149,871 million (US$915.0 million) of ¥201,533 million (US$1,230.4 million), or 74.4%, with Industrial Tape at 25.6%, because Human Life lost ¥5,041 million (US$30.8 million) and Other lost ¥6,971 million (US$42.6 million) and neither is in the denominator. The headline distance is 9.4 points, of which about 3.4 is Human Life turning profitable and entering the denominator. Strip it out of both and Optronics is 65 divided by 95, or 68.4%, six points below 74.4, with Industrial Tape six points above 25.6. Two-thirds of the profit still comes from the segment that cannot be split.

The previous plan, published on 31 May 2023, asked for ¥170.0 billion (US$1,038 million) of operating profit in the year just reported, a 17% margin and a 15% return on equity, from ¥147.2 billion (US$899 million), 15.8% and 12.7%. The profit and the margin arrived: ¥183.6 billion (US$1,121 million) and 17.9%. The return on equity did not. It was 12.2%, below where it started, with this year forecast at 12.0% and the new plan asking for 14%. The company decomposes it one way only — net margin 13.0%, asset turnover 0.74 times, leverage 1.26 times, which multiply to 12.1% and are reported as 12.2% — and leverage sits where it sits because equity is 79.6% of assets against a self-imposed ceiling of 80%. Hold two of the three still and 14% needs turnover at 0.85, which is 14.0 divided by 13.0 times 1.26, or margin at 15.0%, which is 14.0 divided by 0.74 times 1.26.

Cash from operations fell 11.8% from ¥217,908 million (US$1,330.3 million) to ¥192,183 million (US$1,173.3 million), and ¥22,998 million (US$140.4 million) of the ¥25,725 million (US$157.1 million) decline is tax paid, which went from ¥34,304 million (US$209.4 million) to ¥57,302 million (US$349.8 million). Operating less investing leaves ¥84,747 million (US$517.4 million), a subtraction the company does not perform. Against it: dividends of ¥39,667 million (US$242.2 million) and ¥60,287 million (US$368.1 million) of its own shares, ¥99,954 million (US$610.2 million) in all. The policy is a dividend of at least 4% of equity and a total payout of at least 60%, on a denominator the document does not define; the last five years ran 33.5%, 49.0%, 81.9%, 54.1% and 75.4%.

There is one more place to look, which is the company's English product page for optical materials. The US path, /us/en/products/optical/, redirects server-side to the India site, and it was the India site that returned seven results under the heading FPD / Touch Panel Related Products, as of 28 July 2026 — a lineup after a regional filter, the US one unverified. Polarizing Film NPF. Transparent Conductive Film ELECRYSTA. One optically clear adhesive tape. And four series of E-MASK surface protective material, which is the layer applied so that it can later be removed.

On conversion: yen amounts are translated at ¥163.8 = US$1, the rate on 24 July 2026 as published by TradingEconomics, applied uniformly to every period mentioned here, including years in which the prevailing rate was different — the dollar figures are therefore a common yardstick and not a record of what anything was worth at the time. Dollar figures are rounded to the precision of the yen figure they translate: to 0.1 million where the source states millions, to whole millions or 0.1 billion where the yen figure is itself already rounded. Ratios, percentages, multiples, share counts and headcounts are not converted.