Tianma Microelectronics Co., Ltd.

Tianma Microelectronics Co., Ltd. (Tianma) is a publicly traded display technology company founded in 1983 and headquartered in Shenzhen, China. The company is listed on the Shenzhen Stock Exchange under the ticker SZ:000050. As of late 2025, Tianma had approximately 23,538 employees and reported annual revenue of around CNY 35.64 billion.

Tianma is an operating company that designs and manufactures a wide range of display solutions. Its major product lines include liquid crystal displays (LCDs) using TFT and LTPS technology, as well as newer active-matrix organic light-emitting diode (AM-OLED) and Micro-LED displays. These products are key components for customers in the smartphone, automotive, industrial, medical, and consumer electronics sectors. The company has a significant global footprint, with manufacturing and R&D facilities in China and Japan.

The company's patent litigation posture is that of an active, two-way litigant against a direct competitor. The provided data shows Tianma as both a plaintiff and a defendant in U.S. patent venues. This pattern is characteristic of a large operating company defending its market position and intellectual property, rather than a non-practicing entity (NPE). The litigation is concentrated in jurisdictions heavily involved in patent disputes, including the U.S. District Court for the Eastern District of Texas and the U.S. Patent and Trademark Office's Patent Trial and Appeal Board (PTAB).

The tracked cases highlight a significant dispute with competitor LG Display Co., Ltd. In June 2025, LG Display sued Tianma in the Eastern District of Texas for infringing seven patents related to LCD and OLED technologies. Tianma responded by filing a petition at the PTAB to invalidate an LG Display patent, a move that was ultimately denied by the patent office. The litigation followed the breakdown of licensing negotiations between the two companies.