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LCD Power Saving by low refresh rate drive of Liquid Crystal at Screen Saver Mode

IP.com Disclosure Number: IPCOM000013199D
Original Publication Date: 2001-Jul-01
Included in the Prior Art Database: 2003-Jun-17

Publishing Venue

IBM

Abstract

This idea is power consumption reduction at screen saver mode. Power consumption of LCD is related display refresh rate. Generally TFT LCD's refresh rate is fixed at 60 Hz. If the refresh rate reduce from 60 Hz to 50Hz, at this time LCD's power consumption can be reduced about 16%. This idea is automatic refresh rate control by application software. The operation flow is following