Mass Production of 4 mm-Pitch Products, Development of 2.5 mm-Pitch Products Completed; Advertising Revenue-Sharing Model Underway
Dongwoo Fine-Chem is developing transparent LED displays as a new growth business. After establishing a dedicated business division in April this year and showcasing its products and application solutions at K-Display 2026, the company is expanding its activities, particularly in the convenience store and bus advertising markets.
At K-Display 2026, held at COEX in Seoul in July, Dongwoo Fine-Chem exhibited its glass-based transparent LED display, G-TLD (Glass Transparent LED Display). G-TLD embeds LED devices in a glass structure, allowing video and advertising content to be displayed while maintaining transparency. The exhibition featured applications including smart advertising kiosks, subway platform screen doors, and architectural displays.
Dongwoo Fine-Chem’s G-TLD Exhibit at K-Display 2026
Dongwoo Fine-Chem initially considered spinning off its transparent display business but shifted to operating it directly through a separate business division. Its main mass-produced product is currently a transparent LED display with a 4 mm pixel pitch, and development of a 2.5 mm-pitch product has reportedly also been completed recently. The standard panel measures 0.5 m × 1 m and uses a configuration in which one driver IC controls two LEDs.
The key to business expansion is a model combining display sales with advertising revenue sharing. Dongwoo Fine-Chem is pursuing a project to install transparent LED displays at 185 convenience stores associated with KORAIL. With approximately 3 m² per store, the project covers a total of 555 m². Under this model, the company installs the displays and shares advertising revenue. The business is currently in its initial promotional stage and is expected to gain momentum from 2027.
The company is also entering the bus advertising market. Its approach involves installing transparent LED displays on bus side windows to show advertising content, with an initial supply of approximately eight buses anticipated. Overseas, the company is pursuing entry into Japan, while it is not considering entry into China due to price competition, local business conditions, and differences in bus specifications.
Following the restructuring of its polarizer and color filter businesses, Dongwoo Fine-Chem has been realigning its operations toward areas such as semiconductor chemicals. Transparent LED displays are part of this business diversification. The growth potential of the business is expected to become clearer as installations expand in convenience stores and bus advertising and as the advertising revenue-sharing model achieves commercial traction.