May 2008

Rev 1

1/11

AN2686

Application note

Using the STVM100 to fully auto adjust LCD flicker

Introduction

Liquid crystal displays (LCDs), from advanced VGA computer monitors to wide-screen TVs,

are very popular with consumers. Compared to its conventional cathode-ray tube (CRT)

counterpart, the LCD screen is superior as it is lightweight, thin, and consumes less power.

Another advantage is that in principle the LCD screen does not flicker as much as a CRT

screen and the flicker on an LCD screen can be minimized. This application note presents

the principle of LCDs and the cause of flicker. We also propose a solution of automatically

minimizing flicker using the STVM100 (LCD VCOM calibrator).

www.st.com