ThinkLaser Semiconductor laser Marking Machine SC300

The ThinkLaser SC300 is a high-end, fully automated "Soft Marking" laser marking system designed specifically for 300mm wafers. Its core value lies in its ability to apply durable, highly legible markings without causing damage to the wafer or generating debris—thereby meeting the extremely stringent requirements for yield and traceability within front-end semiconductor processing.

It was originally developed to satisfy the rigorous demand for contamination-free marking of wafers once they have entered a cleanroom environment.

**Operating Principles and Core Technologies**

The operation and technical advantages of the SC300 can be best understood through the following comparison:

**Core Technology** | **Operating Principle** | **Key Advantages**

**SuperSoftMark™ Marking** | Utilizes a patented Diode-Pumped Solid-State (DPSS) laser; by precisely controlling laser energy, it creates markings as shallow as 2.5µm on the wafer surface, altering only the material's reflectivity without causing physical damage. | Debris-free, high cleanliness, clear markings, and no damage to the wafer.

**Patented Laser Technology** | Employs a 1053 nm Nd:YLF laser with exceptional pulse stability (<0.5%), ensuring that the depth of every marked dot is consistent and well-formed. | Stable marking quality with high dot circularity (major-to-minor axis ratio <1.1), meeting strict quality standards.

**Advanced Control System** | Integrates system-level closed-loop control and a SECS/GEM interface, enabling the precise recording of all laser performance data down to the Statistical Process Control (SPC) level. | Highly controllable and traceable process, capable of seamless integration into factory automation systems.

**Technical Specifications**

Based on its core technologies, the SC300 features the following key technical specifications:

**Supported Wafer Sizes:** Standard 300mm (12-inch), with downward compatibility for 200mm (8-inch) wafers.

**Marking Performance:** Single-character marking speed of up to 125 wafers per hour (WPH). Each marking group supports a maximum of 80 characters.

**Marking Accuracy:** High positioning repeatability, achieving ±0.125mm within a 50×50mm area. Physical Specifications: Features an air-cooling system design and complies with numerous international safety and environmental standards, including CE, SEMI S2, S8, and S14.

Application Areas

The SC300 serves as a core traceability device within large-scale semiconductor production lines, primarily utilized for:

Front-End Wafer Fabrication: Marking wafers with unique IDs to facilitate yield analysis, process optimization, and wafer tracking.

Advanced Packaging: Providing "soft marks" on reconstructed wafers or panels during Wafer-Level Packaging (WLP) processes, thereby ensuring end-to-end process traceability.

Compound Semiconductors: Capably processing next-generation semiconductor materials—such as SiC, GaN, and GaAs—to meet the specific requirements of specialized fabrication processes.

Complementary Products

ThinkLaser offers a comprehensive wafer identification solution suite, within which the SC300 plays a pivotal role:

Complementary to the HM300: The SC300 specializes in "soft marking"—a technique requiring zero surface damage or contamination—whereas the HM300 is designed for "hard marking" applications that demand high durability.

Part of the SigmaClean/SigmaDSC Product Line: While the SC300 focuses on the 300mm market, the SigmaClean and SigmaDSC systems serve as automated soft-marking solutions for wafers sized 200mm and smaller; together, these systems form a complete product matrix for wafer marking solutions.

Summary

In conclusion, the ThinkLaser SC300 is a technologically advanced soft-marking system engineered specifically for large-scale 300mm wafer manufacturing. Its core value lies in its proprietary SuperSoftMark™ technology, which enables efficient, dust-free, and high-precision marking without causing any damage to the wafer surface—making it an indispensable device for ensuring end-to-end process traceability in modern semiconductor production.