Patent ID: 9613560
Date: 2017-04-04
CPC Classifications: G09G,H04N

Claim:
1. A backlight driving method, comprising steps of: acquiring preset turn-on time periods of respective areas of a backlight source of a display device and an opening time period of a 3D glasses; calculating each length of overlapping time periods ΔT1, ΔT2, . . . , ΔTn between the opening time period of the 3D glasses and each of the preset turn-on time periods of the respective areas of the backlight source, wherein n indicates the number of areas of the backlight source; calculating and adjusting amplitudes of driving signals I1, I2, . . . , In for the respective areas of the backlight source, so that wherein brightness is represented by an integral value of the amplitude of the driving signal over the length of the overlapping time period, and L is a preset brightness value; and driving the corresponding areas in the backlight source to be turned on by using the adjusted driving signals for the respective areas of the backlight source, wherein the backlight driving method further comprises, prior to the step of driving the corresponding areas in the backlight source, a step of adjusting durations of the driving signals I1, I2, . . . , In during which the driving signals I1, I2, . . . , In are turned on, such that the durations of the driving signals I1, I2, . . . , In are controlled to be equivalent to the respective overlapping time periods ΔT1, ΔT2, . . . , ΔTn, and that the driving signals I1, I2, . . . , In are controlled to be turned off when the 3D glasses are not open, creating adjusted turn-on time periods; and wherein the adjusted turn-on time periods of the respective areas of the backlight source, after the steps of adjusting the durations of the driving signals I1, I2, . . . , In and driving the corresponding areas in the backlight source, are less than the preset turn-on time periods of the respective areas of the backlight source.