This inventor holds 3 USPTO granted patents and 2 EPO patents. Top assignee: Diodes Inc.. Active years: 2025-2026.
Company Filing History:
Years Active: 2025-2026
Title: Innovations by Joy Das
Introduction
Joy Das is an accomplished inventor based in Shyamnagar, India. He has made significant contributions to the field of LED technology, holding a total of 3 patents. His work focuses on enhancing the control of color and brightness in LED applications.
Latest Patents
Joy Das's latest patents include an innovative LED color and brightness control apparatus and method. This apparatus features a plurality of MOSFET device groups connected in parallel. A first common node of these MOSFET device groups is coupled to the cathode of a light-emitting diode channel, while a second common node is connected to ground. The control circuit generates gate drive signals for the MOSFET device groups, allowing for the adjustment of current flowing through the LED channel based on predetermined color and brightness levels. The control circuit is also designed to manage current flow proportional to different duty cycles.
Another patent by Joy Das involves a similar LED color and brightness control apparatus. This apparatus includes a bandgap voltage reference that generates a current reference for controlling multiple LED channels. The MOSFET devices are configured to control the current flowing through the LED channel, with a control circuit generating gate drive signals to adjust the current based on predetermined color and brightness levels.
Career Highlights
Joy Das is currently employed at Diodes Inc., where he continues to innovate in the field of LED technology. His work has contributed to advancements in lighting solutions that are both efficient and versatile.
Collaborations
Joy has collaborated with notable coworkers, including Dongjie Cheng and Vijay Hugar, who have supported his innovative endeavors.
Conclusion
Joy Das is a prominent inventor whose work in LED technology has led to significant advancements in color and brightness control. His contributions are paving the way for more efficient lighting solutions in various applications.