Iljin Display is a KOSPI-listed electronic components maker organized around two business lines—touch screen panels (TSP) and sapphire ingots/wafers—with its disclosed products and services listed as touch screen panels, sapphire, and wafers.
The TSP business is run through its Vietnamese subsidiary, operating as a DS division that supplies touch screen panels for notebooks, tablet PCs, smartphones, and automotive electronics.
Built on Samsung Electronics smartphone volumes, the company posted a record revenue of roughly KRW 660bn in 2013, but has since faced a prolonged decline as it failed to secure new growth drivers and came under pressure from low-cost Chinese competitors.
The sapphire segment produced LED-grade sapphire ingots and wafers at its Eumseong plant in Chungcheongbuk-do, continuing technology development aimed at next-generation optical component markets such as micro-LEDs.
However, in September 2025 the company halted operations at the Eumseong plant citing excess inventory and intensifying competition, and because that plant accounted for a substantial share of the Korean entity's standalone revenue, the shutdown subsequently triggered a listing eligibility issue.
In response to shrinking TSP demand as smartphone makers adopt on-cell touch integration, the company is pursuing customer and product diversification into notebooks, automotive electronics, and tablets.
The controlling shareholder is Chairman Heo Jin-kyu and related parties, whose combined stake expanded to 52.44% as of April 2026 through convertible bond conversions.
Competitively, the touch panel segment faces low-cost Chinese rivals while the sapphire segment competes against cost-efficient overseas wafer producers.