Title :
Electromagnetic Design Techniques for Liquid Crystal Display Driver ICs
Author :
Ga, Fumikazu ; Umeda, Kengo ; Nakajima, Keiichi ; Watanabe, Takeshi ; Takahashi, Masaharu
Author_Institution :
NEC Electron. Corp., Kawasaki
Abstract :
A simple method of verifying electromagnetic interference (EMI) reduction effects for liquid crystal display (LCD) driver integrated circuits (ICs) is proposed. In this paper, we discuss correlations between radiated emissions and high-frequency currents of power system at three different levels: print circuit board (PCB) level, chip level, and functional circuit level. The EMI design points for LCD driver ICs are presented too. Simulated and measured results prove that our EMI design effectively reduces LCD EMI noise.
Keywords :
driver circuits; electromagnetic interference; integrated circuits; interference suppression; EMI reduction; LCD; PCB; driver integrated circuits; electromagnetic design techniques; electromagnetic interference reduction; high-frequency currents; liquid crystal display driver IC; power system; print circuit board; radiated emissions; Driver circuits; electromagnetic interference; liquid crystal displays (LCDs); simulation;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2007.904357
