Nanchang Silicon Semiconductor and others applied for a patent for a Micro-LED micro-display and its preparation method to improve the brightness uniformity of Micro-LED micro-displays.

According to information from the State Intellectual Property Office on August 4, 2025, Nanchang University, Nanchang Laboratory, and Nanchang Silicon Semiconductor Technology Co., Ltd. applied for a patent titled "A Micro-LED microdisplay and its preparation method", with the publication number CN120417598A, and the application date is April 2025.

The patent abstract shows that the present invention provides a MicroLED microdisplay and a preparation method thereof. The preparation method includes: preparing a MicroLED chip; preparing a first resin layer on the surface of the MicroLED chip; providing a first substrate, preparing a second resin layer on the surface of the first substrate; bonding the MicroLED chip and the third resin layer. A substrate is made into a primary transfer chip, and the first resin layer and the second resin layer are bonded to form a polymer sealing layer; the growth substrate is removed to expose the second side of the N-type semiconductor layer; a second substrate is provided, and the second substrate is bonded to the second side of the N-type semiconductor layer; the polymer sealing layer and the first substrate are removed to expose the first side of the N-type semiconductor layer to form a secondary transferchip; provide a CMOS driving substrate, align and bond the secondary transfer chip with the CMOS driving substrate to complete the preparation of the MicroLED microdisplay; and also include arranging metal wires on the first or second side of the exposed N-type semiconductor layer.