Core Viewpoint - The compound semiconductor industry is experiencing strong growth driven by performance advantages in power, RF, and photonics applications, with significant long-term market potential for n-type SiC and InP despite short-term price pressures and application timing adjustments [2][3][6]. Group 1: Market Growth Projections - The CS substrate market is projected to grow from $1.29 billion in 2025 to $2.79 billion by 2031, reflecting a compound annual growth rate (CAGR) of 14% [2]. - The open epitaxial wafer market is expected to increase from $1 billion to $2.39 billion during the same period, also with a CAGR of 14% [2]. Group 2: Power Applications - Power applications dominate the market, with n-type SiC growth driven by the electrification of electric vehicles, 800V architectures, and the accelerated adoption of 8-inch wafers, although short-term price pressures may arise from overcapacity and slowing automotive industry growth [2][6]. - Power GaN applications have expanded from consumer fast charging to automotive and data centers, but its epitaxial wafer market remains smaller than that of SiC [2]. Group 3: RF and Photonics Markets - The RF market remains stable, primarily led by GaAs in mobile applications and GaN in telecommunications and defense, with limited short-term growth potential as the industry transitions towards 6G [3][6]. - The photonics market is experiencing the strongest growth, driven by AI data centers and bandwidth upgrades, accelerating the adoption of InP, 6-inch platforms, and high-speed lasers [3][6]. Group 4: Technology and Supply Chain Developments - The compound semiconductor supply chain is being reshaped by significant investments in power SiC and recent strategic moves in power GaN, with a focus on scalable platforms and applications [6][10]. - The transition from 6-inch to 8-inch wafers in SiC is enhancing cost competitiveness, while new Chinese suppliers are entering the market to meet demand [6][10]. - GaN is evolving towards a hybrid IDM and foundry model, with some foundries exiting the market while new entrants leverage internal epitaxial technology [6][10]. Group 5: LED and MicroLED Technologies - LED technology is mature and of lower value, while the adoption of MicroLED is expected to resume later in the century, initially targeting wearable devices and AR applications [3][7]. - Vertical integration is crucial for MicroLED as it enters high-end wearable markets, intensifying competition between pure compound semiconductor manufacturers and silicon wafer producers [7].