8.2: Bi‐Directional OLED Microdisplay for Interactive HMD

Abstract

First prototypes of bi-directional OLED microdisplay devices have been designed, that combine both display and camera functionality on a single CMOS chip (OLED-on-CMOS). Major aim of this integration is to provide capabilities for eye-trackingin see-through HMD to achieve gaze-based human-displayinteraction, e.g. in augmented-reality applications.

13.5L: Late‐News Paper: A Simple Pixel Circuit for Ultra High Resolution Active Matrix OLED‐on‐Silicon (OLEDoS) Microdisplays with Highly Uniform Luminance

“…The emission current deviation due to the variation of VTH,ND is suppressed using the capacitive coupling effect. When VTH,ND becomes larger due to process variation, IOLED decreases according to equation (4) and thereby VANODE also decreases according to equation (1). Accordingly, (1−α)VANODE, which is determined by the capacitive coupling effect, decreases and then VGS,ND increases as shown in equation (3).…”

“…Recently, an organic light-emitting diode-on-silicon (OLEDoS) has been used for microdisplay applications such as picoprojectors implemented on cellular phones, electrical viewfinders (EVFs), and head-mount displays (HMDs). Unlike conventional display applications which are implemented using a thin film transistor (TFT) process on glass substrate, the OLEDoS microdisplay of which size is less than 1-inch is implemented using a CMOS process on the single crystalline silicon substrate, which has fine design rules [1]. Moreover, a CMOS process on the single crystalline silicon substrate enables to integrate peripheral circuits such as gate drivers, data drivers, timing controllers, and DC-DC converters on a single chip.…”

Organic Light-Emitting Diode-on-Silicon Pixel Circuit Using the Source Follower Structure with Active Load for Microdisplays

“…An organic light-emitting diode on silicon (OLEDoS) is used for microdisplay applications such as picoprojectors implemented in cellular phones, electronic viewfinders, and head-mounted displays (HMDs). [1][2][3][4] The OLEDoS can be implemented using single-crystalline silicon as a backplane. Therefore, the OLEDoS can be realized in smaller and lighter form than organic light-emitting diode (OLED) displays using other backplane technologies such as poly and amorphous silicon.…”

Pixel Circuit for Organic Light-Emitting Diode-on-Silicon Microdisplays Using the Source Follower Structure

“…[1][2][3] The organic light-emitting diode-on-silicon (OLEDoS) displays, which use a complementary metal oxide semiconductor (CMOS) process as backplane technology, have been proposed for realizing microdisplays with organic light-emitting diode (OLED) displays. 1,2) Because devices using the standard CMOS process are much smaller than those using the thinfilm transistor (TFT) process, pixel circuits using the standard CMOS process can be integrated into a small pixel area, usually several tens of mm 2 . 1,2) Therefore, microdisplays can be realized using OLEDoS displays.…”

“…1,2) Because devices using the standard CMOS process are much smaller than those using the thinfilm transistor (TFT) process, pixel circuits using the standard CMOS process can be integrated into a small pixel area, usually several tens of mm 2 . 1,2) Therefore, microdisplays can be realized using OLEDoS displays.…”