Patent ID: 8842172

Claim:
An operation method of shutter glasses based 3D (3-Dimensional) display devices, which alternatively supplies left-eye and right-eye frame signals to a liquid crystal panel to drive the liquid crystal panel to respectively form left-eye and right-eye images, which cooperate with illumination of a scanning back light unit and timing control of the shutter glasses to simulate left and right eyes respectively with left-eye and right-eye signals for perception of a 3D image, wherein in a period of a current frame signal, duty time of each of blocks of the back light unit is located between the time when liquid crystal corresponding to the block completely responds after being driven by the current frame signal and the time when the liquid crystal corresponding to the block starts to respond as being driven by a subsequent frame signal; wherein each of the blocks of the back light unit has identical duty time; and wherein for each of pixels located in the liquid crystal corresponding to each of the blocks of the back light unit, transmittance of the pixel is individually changed to T m,pixel =T m,pixel,0 ×T Max /T M , where Max indicates maximum signal grey level of the liquid crystal panel, T Max indicates liquid crystal transmittance corresponding to the maximum signal grey level Max, m indicates the liquid crystal corresponding to a mth block of the back light unit in which the pixel is located, M indicates the original maximum signal grey level of the current frame for the liquid crystal corresponding to the mth block of the back light unit, T M indicates liquid crystal transmittance corresponding to the signal grey level M, and T m,pixel,0 indicates original transmittance of the pixel located in the liquid crystal corresponding to the mth block of the back light unit for the current frame.