2024년 05월 28일 (화) 오후 5시

연사: 고려대 전자공학과 이형민 교수님

제목: A Low-Stimulus-Scattering Pixel-Sharing Sub-Retinal Prosthesis System-on-Chip
초록: Retinal prosthesis (RP) systems-on-chip (SoC) for the treatment of age-related macular degeneration (AMD) and retinal pigment degeneration have been widely studied for restoring visual function. RP SoCs allow the brain to perceive visual information by applying current stimuli to the retinal cells. An epi-retinal prosthesis (epi-RP) obtains image information from an external camera and provides appropriate stimuli to the ganglion cells. On the other hand, a sub-retinal prosthesis (sub-RP) uses photodiodes (PD) to directly recognize light and stimulate bipolar cells. Although the sub-RP SoC has potential to restore the patient’s vision without bulky external devices, it suffers from three major problems that limit the functionality and safety: (1) stimulus scattering, (2) limited dynamic range of the light sensor, and (3) RP power consumption. In this talk, I will present the low-stimulus-scattering pixel-sharing sub-retinal prosthesis system-on-chip with advanced integrated circuit (IC) solutions to overcome those limitations.