Light emitting devices using only edge emission reflected by cone-shaped micro-tip reflectors

In this work we report an experimental demonstration of the concept of EL pixel with tip-shaped Si reflector earlier proposed by us. The new concept is based on the use of Si-tip reflectors as part of a edge emitting pixel. Based on this concept we propose novel structures and fabricate TFEL pixel surrounded by Si-tip reflectors. These picture elements create a well-concentrated visible light around the point reflectors under the bipolar pulse excitation. The concept can be applied in fields where effective control of the luminance is important.