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LCD module with checkered common voltage swing

IP.com Disclosure Number: IPCOM000015437D
Original Publication Date: 2001-Nov-17
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

Abstruct Described in this paper is a method to reduce the voltage rating of the source drivers used in TFT-LCD modules. To pattern the VCOM lines into checkered two channels and swinging each VCOM electrode opposite to the source electrode, make it possible to provide higher voltage than conventional method using conventional dot inversion source drivers without losing the advantages of the dot inversion drive method. In other words, makes it possible to use lower rating source drivers, which cost lower than the higher rating ones.