Numerical Analysis of High-Luminance, Spatial, Multiple-Layer, Light Emitting Diode, Backlighting System

Abstract

Currently, light emitting diodes (LED) have replaced cold cathode fluorescent lamps (CCFL) as backlighting systems in liquid crystal displays (LCD). However, the original single layer alone can only satisfy the needs of the panel display and cannot satisfy the requirements for a 3D display system or outdoor displays. In this paper, a new method is proposed to demonstrate that a high output can be achieved using spatial stacking of integrated LED light sources. Moreover, we also simulate the system and measure the light output and the distribution of the light. The system is efficient to provide high luminance while keeping a balanced light distribution. With this proposed high luminance spatial multiple-layer LED back-lighting system, many requirements, especially for the high light source, are supposed to be satisfied.