Pixel-to-Pixel Fiber-Coupled Emissive Micro-Light-Emitting Diode Arrays

Miniaturized optoelectronic tweezers controlled by GaN micro-pixel light emitting diode arrays.

A novel, miniaturized optoelectronic tweezers (OET) system has been developed using a CMOS-controlled GaN micro-pixelated light emitting diode (LED) array as an integrated micro-light source. The micro-LED array offers spatio-temporal and intensity control of the emission pattern, enabling the creation of reconfigurable virtual electrodes to achieve OET. In order to analyse the mechanism respon...

Regularly patterned nanorod light-emitting diode arrays

Regularly patterned InGaN/GaN quantum-well nanorod (NR) light-emitting diode (LED) arrays are grown with MOCVD and characterized with cathodoluminescence and transmission electron microscopy. The dependencies of their morphologies and emission behaviors on the geometry of growth pattern and MOCVD growth condition are investigated. Also, a light-emitting device consisting of such an NR LED array...

Micro-Cavity in Organic Light-Emitting Diode

The study on micro-cavity in organic light-emitting diode(OLED) demands understanding the theory of multi-layer films. It is because OLED is basically an optical device and its structure consists of organic or inorganic layers of sub-wavelength thickness with different refractive indices. When the electron and holes are injected through the electrodes, they combine in the emission layers emitti...

Overview of All Pixel Circuits for Active Matrix Organic Light Emitting Diode (AMOLED)

4.2: Design of an Improved Pixel for a Polysilicon Active Matrix Organic Light Emitting Diode Display

A polysilicon transistor based active matrix organic light emitting diode (AMOLED) pixel with high pixel to pixel luminance uniformity is reported. The new pixel powers the OLEDs with small constant currents to ensure consistent brightness and extended life. Excellent pixel to pixel current drive uniformity is obtained despite the threshold voltage variation inherent in polysilicon transistors....