Tianma Microelectronics (HONG KONG) Limited is a subsidiary of Tianma Microelectronics Co., Ltd., a publicly traded Chinese company founded in 1983. The parent company, headquartered in Shenzhen, is listed on the Shenzhen Stock Exchange (SZ: 000050). For the trailing twelve months ending March 31, 2026, the company reported revenue of approximately $5.02 billion with a market capitalization of around $2.8 billion as of May 2026. The company's major shareholders include state-affiliated entities like Aviation Industry Corporation of China, Ltd. (AVIC).
Tianma is an operating company that manufactures and supplies small- and medium-sized display solutions globally. Its product lines include liquid crystal displays (LCD), thin-film-transistor (TFT) displays, LTPS-TFT, and AM-OLED displays. These products are used in a wide range of applications, including smartphones, tablets, automotive displays (instrument clusters, center information displays), industrial and medical instrumentation, and smart home devices. The company has manufacturing and research facilities in multiple locations in China and Japan.
Based on available data, Tianma is an operating company defending its products in patent litigation rather than an entity that initiates it. The company has been tracked as a defendant in one U.S. patent case and has not been a plaintiff. This defensive posture is typical for a manufacturing company. The single tracked case was filed in the U.S. District Court for the Eastern District of Texas, a common venue for patent disputes.
The notable tracked case is LG Display Co., Ltd. v. Tianma Microelectronics Co., Ltd. et al., filed in June 2025. This lawsuit, brought by a major South Korean competitor, accuses Tianma and its related entities of infringing patents related to LCD and OLED technologies. The litigation reportedly followed a breakdown in licensing negotiations between the two display manufacturers. The defendants named in the suit include the parent company, Tianma Microelectronics Co., Ltd., as well as its Hong Kong and Wuhan subsidiaries.