Erratum: A study of an LED backlight thermal module

AN-9765 - LED Backlight Driving Boost Switch

FAN7340 is a single-channel boost controller that integrates an N-channel dimming MOSFET using Fairchild’s proprietary planar DMOS technology. The IC operates as a constant-current source for driving high-current LEDs. FAN7340 uses a current-mode control with programmable slope compensation to prevent sub-harmonic oscillation and provides protections such as Open-LED Protection (OLP) and Over-V...

Thermal distribution of multiple LED module

Light-emitting diode (LED) is an electronic device with high heat flux. The simulation and analysis of the heat dissipation play an important role in the improvement of performance and design of LEDmodule. In this paper, a thermal model was developed using ANSYS software to simulate the temperature distribution of LED module. The effect of thermal conductivity of MCPCB (metal-core printed circu...

Color performance of an MVA-LCD using an LED backlight

Ruibo Lu (SID Member) Xiangyi Nie Shin-Tson Wu (SID Fellow) Abstract — The color performance, including color gamut, color shift, and gamma curve, of a multidomain vertical-alignment (MVA) liquid-crystal display (LCD) using an LED backlight are calculated quantitatively. Simulation results indicate that an LED backlight exhibits better angular color uniformity and smaller color shifts than a CC...

Design and Fabrication of Light Guide Plate Application in LED BackLight Module

LED Backlight Driving Circuits and Dimming Method

In this paper, light-emitting-diode (LED) backlight driving circuits and dimming method for medium-sized and large liquid crystal displays (LCDs) are proposed. The double loop control method, the intelligent-phase-shifted PWM dimming method, the fast-switching current regulator, and the current matching techniques are proposed to improve not only the current regulation characteristics and the p...