LED sign board design using solar cells

RS-232 Led Board

This article demonstrates how to develop a Microchip PIC16F84 based device that supports RS-232 interface with PC. Circuit (LED Board) design and software development will be discussed. PicBasic Pro Compiler from microEngineering Labs, Inc. is used for PIC programming. Development of LED Board Control Console using C/C++ is also briefly discussed. The project requires basic work experience with...

LED/OLED Design Using Mixed-Level Simulation

Dan Herrmann CAE Manager, Synopsys Introduction Over the last two decades, there has been extensive research to improve the design of light-emitting diodes (LEDs) to enhance light extraction efficiency, improve beam shaping, and allow color tuning. Techniques such as patterned substrates, polarization-sensitive gratings, back reflectors, surface textures, and phosphor down-conversion have all b...

Optimized design for controlling LED display matrix by an FPGA board

The very important objective of the digital designer when using discrete gates for implement a Boolean function is to keep the number of used gates to a minimum and win a memory space without lost the original information. In this sense, the Simplification is very important and could be achieved by a purely algebraic process, but it can be tedious when it arrived to a very large number of varia...

Design and implementation of an FPGA-based multiple-colour LED display board

Design of Silicon Nano-Bars Anti-Reflection Coating to Enhance Thin Film Solar Cells Efficiency

In this paper a novel anti-reflection (AR) coating based on silicon nano-bars is designed and its impact on the performance of crystalline silicon (c-Si) thin-film solar cells is extensively studied. Silicon nano-bars with optimized size and period are embedded on top of the active layer, under a 100nm Si3N4 layer. As a result of the proposed layer stack, an inhomogeneous intermediate layer wit...