GIST Changhwan Kim PhD student.
The Gwangju Institute of Science and Technology (GIST) announced on the 23rd that Changhwan Kim, a PhD student in the Department of Electrical, Electronic and Computer Engineering, received the 'Distinguished Paper Award' at 'SID Display Week 2025,' hosted by the Society for Information Display (SID), the world's most prestigious international conference in the display field.
The 'Distinguished Paper Award' is presented by SID to papers that achieve outstanding technical results, representing the top approximately 5% of the hundreds of papers published each year. This award is given only to research with high academic contribution and significant industrial impact.
Through his paper, Changhwan Kim proposed a new circuit architecture that can significantly improve the performance of display driver ICs for mobile displays.
He introduced a Double Capacitor-Coupled Adder circuit structure, which uses two capacitors to calculate signals more accurately in order to reduce errors occurring during display driving. He also implemented an Offset Calibration technology that automatically compensates for minute circuit errors. As a result, the accuracy and image quality of displays have been greatly enhanced, along with overall product performance.
In addition, the new circuit (Source Driver IC) developed by Changhwan Kim features an architecture that can perform input signal sampling and output processing simultaneously. This enables precise operation and immediate response to signal changes even during slow screen transitions.
As a result, the screen driving time has improved to 2.0 microseconds (μs), and the signal transmission speed has reached 9.9 volts per microsecond (V/μs). Power efficiency has increased, and screen uniformity has also been improved.
Changhwan Kim stated, "It is a great honor to have my research recognized at such a prestigious international conference," and added, "I hope to continue contributing to the advancement of next-generation display technology by developing precise calibration techniques and high-performance circuit architectures."
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