15.1: Emissive Microdisplay using Light Emitting Polymer

Abstract

An emissive microdisplay technology has been developed which incorporates a layer of light emitting polymer on a CMOS substrate. Monochrome microdisplays of QVGA (320 × 240) resolution have been manufactured and early aspects of their initial characterization are presented. Benefits of the technology include very low power consumption plus relatively simple drive electronics and opto‐mechanics.

Polymer OLED microdisplay technology: pixel design in context

“…The circuit shown in Figure 8 has been implemented in a microdisplay backplane that has been used successfully in two prototype microdisplays -the ME3201 monochrome QVGA microdisplay [9] and the ME1602 color QQVGA microdisplay [10]. In the case of ME1602, the 320x240 individual pixel circuits are grouped into 160x120 color pixels where each color pixel has 4 sub-pixels in a 2x2 format.…”

Emissive Microdisplays

“…They report that the CMOS backplane used to drive the LEP is the same one reported by Blalock et al 63 as a backplane for a ferroelectric LC microdisplay. In 2003, Bodammer et al 64 reported a QVGA monochrome active matrix backplane used in conjunction with a green emitter and a white emitter. This leads us to the conclusion that grayscale was achieved by pulse width modulation and the LEP was driven in constant voltage mode.…”

LP‐2: Late‐News Poster: QVGA Color Microdisplay using Light Emitting Polymer on CMOS

“…We have previously described a QVGA monochrome microdisplay [5] and a QQVGA color microdisplay [6] utilizing LEP on CMOS technology.…”