Location History:
- Yueyang County, CN (2023)
- Yueyang, CN (2023)
Company Filing History:
2 out of 2 
1 out of 1 
1 out of 1,505 
Years Active: 2023
Title: Innovations of Xi Ren in Transparent Films
Introduction
Xi Ren is an accomplished inventor based in Yueyang County, China. He has made significant contributions to the field of materials science, particularly in the development of advanced transparent films. With a total of 2 patents, his work focuses on enhancing the thermal and mechanical properties of these materials for various applications.
Latest Patents
Ren's latest patents include groundbreaking innovations in the realm of copolyamide-imide films. One of his notable inventions is the "Colorless transparent copolyamide-imide films with high modulus and low coefficient of thermal expansion and preparation thereof." This patent discloses a method for preparing a colorless transparent copolyamide-imide resin solution, which is then fabricated into thin films. The method involves formulations derived from a reaction between dianhydride and diamine monomers, with some monomers containing fluorine atoms. The resulting films exhibit superior thermal and mechanical properties, with a coefficient of thermal expansion as low as 2 ppm/°C and a tensile modulus reaching up to 9 GPa. These films are poised for use in flexible displays, including substrates for thin film transistors (TFT), touch sensor panels (TSP), and cover windows in organic light-emitting diode (OLED) and liquid crystal display (LCD) applications.
Another significant patent is the "Colorless polyimide film containing fluorine and cardo structure and preparation method thereof." This polyimide film incorporates fluorinated substituents and cardo structures, showcasing excellent heat resistance, transparency, and mechanical properties. It has a glass-transition temperature (Tg) of at least 360°C, a coefficient of thermal expansion (CTE) of 50 ppm/°C or lower, and a modulus of at least 4.0 GPa. The film's characteristics make it suitable for use as a display substrate or optical film in LCDs and OLEDs, among other applications.
Career Highlights
Xi Ren has worked with notable companies in the film technology sector, including Rayitek Hi-tech Film Company, Ltd. and Jiaxing Rayitek Film Technology Co., Ltd. His experience in these organizations has allowed him to refine his expertise in the development of advanced materials.
Collaborations
Throughout his career, Ren has collaborated with talented individuals such as ZhenZhong Wang and YanYan Jiang, who is