Patent ID: 8305332

Claim:
A backlight unit of a liquid crystal display device that supplies light to one or more corresponding pixels of a liquid crystal display panel, comprising: a plurality of blocks, each block including a light emitting diode having first and second distinct terminals, the blocks formed into a matrix shape, wherein the blocks in a row of the matrix are driven by a same row driving signal and the blocks in a column of the matrix are driven by a same column driving signal, to adjust luminance of the light supplied to the corresponding pixels; a row driving circuit applying the row driving signal to the first terminals of the light emitting diodes in the row; and a column driving circuit applying the column driving signal to the second terminals of the light emitting diodes in the column, wherein illumination of the light emitting diode is adjusted by the column driving circuit in a first duration and by the row driving circuit in a second duration, wherein the row driving circuit applies the row driving signal at a first voltage level during a first part of an image period and then transitions the row driving signal to a second voltage level, wherein the column driving circuit applies the column driving signal at a third voltage level during the first part and then transitions the column driving signal to a fourth voltage level, and wherein the second and third voltages differ from one another and the second and third voltages are in between the first and fourth voltages.