52-1:Invited Paper: OLED Microdisplays Control Cell Behavior through Optogenetics

Abstract

OLED microdisplays are introduced as a microscopic illumination platform for cell biology. The µm-scale dimensions of each pixel and the µm-thin encapsulation enable controlled light exposure of individual live cells. This breakthrough is facilitated by recent progress in ultrathin metal electrodes and by quality control via high resolution hyperspectral imaging. IntroductionFor general lighting and for parts of the display industry, there is a drive towards larger and larger organic light emitting diodes (OLEDs). By contrast, displays for mobile applications and for wearable devices require OLED pixels with ever smaller dimensions. OLED microdisplays represent the culmination of this process. By integration with complementary metal-oxide semiconductor (CMOS) backplane driver electronics, it has become possible to produce arrays of >10 5 individually addressable OLEDs with each OLED pixel measuring well under 10 × 10 µm 2 . The primary use of these devices so far has been in 'near eye' applications, i.e. digital viewfinders, virtual and augmented reality, security and defense, etc. There has also been work towards using microdisplays in ultra-compact video projectors.