Development of Low-Power-Consumption System on Glass Liquid Crystal Display

概要

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A new ($12+1$)-channel block-addressing driving method and a cost-effective drive IC have been successfully developed. The power consumption of the new block-addressing driving method is nearly 50% less than that of the conventional block-addressing method. The panel integrated dc/dc converter for the voltage of transistor-turning-off ($V_{\text{off}}$) enabled us to reduce the size and the manufacturing cost of the driver IC. On the basis of these technologies, a 1.89$''$ active-matrix liquid crystal display with 240 $\times$ RGB $\times$ 320 pixels was fabricated with a data driver, a dc/dc converter for $V_{\text{off}}$, a gate driver, and a level shifter for a gate driver. The power consumption of the panel using the low-voltage driving liquid crystal is typically 13 mW.
2007-03-30