• Ivan-Christophe Robin

     

    CTO Display

    ALEDIA

     

     

    主題

     

    Active Matrix on PCB Light Boards for Local Dimming Backlight Units Using Blue Digital LEDs

     

    講師簡介

     

    Ivan-Christophe Robin completed his PhD on single photon emitters at the University of Grenoble in 2005. He then did a post-doctorate fellowship at the University of British Columbia in Vancouver where he developed infra-red laser sources for medical applications. He joined CEA-LETI in 2007 where he occupied different positions form researcher and project manager on LEDs and µLED to Strategic Marketing Manager of the Photonic Devices. He joined Aledia as CTO Display in 2017.

     

    演講大綱

     

    Local Dimming Backlight Units (BLUs) for LCD displays provide improved optical performance to LCD displays. The number of zones has a direct correlation with contrast and power consumption.
    Most of the products available on the market are based on PCB lightboards using miniLED chips in a Passive-Matrix (PM) driving architecture. The PM driving complexity increases dramatically with the number of zones. As a consequence, the image quality cannot be perfectly mastered, and the overall system power efficiency is not yet fully optimized.
    To reach or even exceed OLED’s performance (contrast, power consumption), Aledia proposes an innovative chip, “the Blue Digital LED”, in which each LED embeds its individual CMOS based driving and memory circuit. Each LED becomes a zone. This unique technology has been conceived for cost-effective Active-Matrix (AM) driving architecture using a cheap PCB passive backplane. The driving principle will be detailed, and the first Blue Digital LED product will be presented. This solution paves the way for affordable high number of dimming zones BLUs.