Patent ID: 8593391
Filing Date: 2013-11-26
Classification: G09G

Abstract:
1. A liquid crystal display control circuit that controls a liquid crystal display device including a liquid crystal panel and a light emitting element that emits light to the liquid crystal panel, comprising: a current reduction rate setting circuit configured to analyze original gradations of pixels included in an input image signal, and set a current reduction rate in response to a height distribution of the original gradations; a light emitting element control circuit configured to adjust a magnitude of a drive current of the light emitting element in response to the current reduction rate; a gradation changing circuit configured to change the original gradations in response to the current reduction rate to thereby set display gradations, and generate a display image signal in which the original gradations of the input image signal are changed to the display gradations; and a liquid crystal panel control circuit configured to set a transmittance of the liquid crystal panel in response to the display gradations of pixels included in the display image signal, wherein the current reduction rate setting circuit sets the current reduction rate so that a difference between the current reduction rates among continuous frames falls within a range of 0.5% to 1%, wherein the gradation changing circuit comprises: