COMUNICATO STAMPA - CONTENUTO PROMOZIONALE
KYOTO, Japan, April 15, 2026 /PRNewswire/ -- Nuvoton Technology Corporation Japan (hereinafter "NTCJ") announced on April 15 that it will start mass production of a "high-power violet laser diode (402 nm, 4.5 W)" that achieves industry-leading-class (*1) optical output in a 9.0 mm diameter CAN
(*1) As of April 15, 2026, based on NTCJ's research of laser diodes emitting at 402 nm in a TO-9 CAN package under continuous-wave (CW) operation at a case temperature (Tc) of 25C.
(*2) NTCJ's conventional product KLC432FL01WW (402 nm, 3.0 W, TO-9 CAN package)
Key visual: https://cdn.kyodonewsprwire.jp/prwfile/release/M108245/202604087113/_prw_PI1fl_XY4583C0.png
Image2: https://cdn.kyodonewsprwire.jp/prwfile/release/M108245/202604087113/_prw_PI2fl_5u4N7B22.jpg
Violet 402 nm laser diodes generally face relatively low wall-plug efficiency (WPE), self-heating, and short wavelength-induced degradation, limiting stable high-power operation. To address these challenges, the "device structure that enhances WPE" and the "high thermal conduction package technology that effectively dissipates heat," used in the high-power ultraviolet laser diode announced in January 2026, were expanded to the violet band. As a result, NTCJ is launching a high-power violet laser diode achieving 1.5 times the optical output of NTCJ's conventional product, with improved lifetime at high-power operation and enhanced heat dissipation, contributing to higher production throughput in industrial optical equipment.
Figure1: https://cdn.kyodonewsprwire.jp/prwfile/release/M108245/202604087113/_prw_PI3fl_HKi1hBb1.png
This product delivers significant value in maskless lithography for advanced semiconductor packaging, a rapidly growing market driven by AI demand. Maskless lithography directly exposes wiring patterns from design data, reducing cost and development time while enabling high-precision correction of substrate warpage and distortion. Laser diodes are increasingly required to support wavelengths close to the mercury lamp i-line 365 nm and h-line 405 nm, and higher optical output to improve throughput. Following the 379 nm, 1.0 W high-power ultraviolet laser diode for i-line applications announced in January 2026, NTCJ is adding a 402 nm, 4.5 W high-power violet laser diode for h-line applications, strengthening its maskless lithography light source lineup to support multiple major photosensitive materials and higher throughput.
Table1: https://cdn.kyodonewsprwire.jp/prwfile/release/M108245/202604087113/_prw_PI4fl_k57YN02p.png
In addition, this product expands NTCJ's "semiconductor laser-based alternatives to mercury lamps," providing a new h-line light source option for photocuring, 3D printing, sensing, biomedical, and marking. This contributes to improving process efficiency and enabling new optical applications.
Figure2: https://cdn.kyodonewsprwire.jp/prwfile/release/M108245/202604087113/_prw_PI5fl_sKw00fyg.jpg
This product is scheduled to be exhibited at NTCJ's booth at "OPIE '26" to be held in Yokohama, Japan, on April 22-24, 2026.
For more information about the product, please visit: https://nuvoton.co.jp/semi-spt/apl/rd/?id=1100-0268
About Nuvoton Technology Corporation Japan: https://www.nuvoton.co.jp/en/
OPIE (OPTICS & PHOTONICS International Exhibition): https://www.opie.jp/en/
View original content:https://www.prnewswire.co.uk/news-releases/nuvoton-releases-industry-leading-class-high-power-violet-laser-diode-402-nm-4-5-w----1-5-times-higher-output-than-its-conventional-product-302742561.html
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