Using smaller CMOS nodes for the design of backplanes for light modulator enables the integration of additional features. This paper reports on a backplane designed in 28nm technology which embeds a complete framebuffer as well as a programmable high speed data interface which can realize up to 576Gbit/s data transfer rate to pixel array utilizing a 1440 x 1080 resolution with a 2.5 micron pixel capable for LCOS, OLED and micro-LED front planes. The programmable modulation scheme will be discussed in detail using typical scanning examples.
It is commonly known for digital logic integrated circuitries that they heavily scale with down-scaling of the process node enabling the integration of more functionality. However, this was not true so far for OLED microdisplays which were basically stuck at 90nm…250nm process nodes for several reasons. This paper will present a new approach to realize a microdisplay architecture with extended functionality as well as a first implementation in 28nm utilizing very small pixels of 2.5um, a flexible interface architecture, framerates up to 10kHz along with integration of totally new driving schemes to serve the power and form factor requirements of upcoming near-to-eye systems in AR/VR/MR applications.
OLED-on-Silicon technology has reached industry maturity for OLED (organic light emitting diode) microdisplays, e.g., in near-to-eye applications. Anyway, there is a huge amount of further applications, which can be addressed with an organic frontplane on an integrated CMOS backplane, e.g., OPD (organic photo diode). This paper will report on latest results in the field of OPD-on-silicon sensing as well as OLED-on-silicon displays, sketching up the impact of a universal photonic platform comprising emitters, photodetectors and CMOS driving and read-out circuitry, based on application scenarios.
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