Taiwan Semiconductor Manufacturing has been granted a patent for apparatus and circuits with transistors of different threshold voltages. The semiconductor structure includes active portions, polarization modulation layers, and transistors with varying gate structures and materials, resulting in at least three different threshold voltages. GlobalData’s report on Taiwan Semiconductor Manufacturing gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Taiwan Semiconductor Manufacturing, 3D memory devices was a key innovation area identified from patents. Taiwan Semiconductor Manufacturing's grant share as of April 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.
Semiconductor structure with transistors having different threshold voltages
A recently granted patent (Publication Number: US11973078B2) discloses a novel structure comprising a substrate, a plurality of active portions, polarization modulation portions, and transistors. The transistors have different gate structures with varying materials and threshold voltages. The structure includes high electron mobility transistors designed for use in a multi-stage driver circuit. Additionally, the transistors can have varying threshold voltages, with different materials and compositions in the active portions, polarization modulation portions, and gate structures.
Furthermore, the patent details the unique configurations of the transistors, highlighting differences in gate materials, active portion materials, thicknesses, compositions, and structures. The structure also includes channel layers made of specific semiconductor materials like gallium nitride (GaN) and aluminum gallium nitride (AlGaN). The patent emphasizes the distinct characteristics of each transistor, showcasing variations in polarization modulation portions and threshold voltages, providing a comprehensive overview of the innovative design and functionality of the structure.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
