Patent ID: 8692759
Filing Date: 2014-04-08
Classification: G09G

Abstract:
1. A method for driving a light source, the light source comprising light-emitting blocks, each of the light-emitting blocks including a first-color light source which emits first-color light and a second-color light source which emits second-color light, the second-color light source comprising a third-color chip and a fourth-color phosphor disposed on the third-color chip, the third color chip and the fourth-color phosphor disposed as one package to emit the second-color light therefrom, the method comprising: compensating a driving current of the first-color light source and a driving current of the second-color light source of each of the light-emitting blocks based on image signal data corresponding to each of the light-emitting blocks, respectively, to generate a compensated driving current of the first-color light source and a compensated driving current of the second-color light source; and driving the first-color light source and the second-color light source based on the compensated driving current of the first-color light source and the compensated driving current of the second-color light source, respectively, wherein the compensating the driving current of the first-color light source and the driving current of the second-color light source comprises: determining a duty of the driving current of the first-color light source and a duty of the driving current of the second-color light source using image data corresponding to each of the light-emitting blocks; determining a driving mode of each of the light-emitting blocks based on the duty of the driving current of the first-color light source and the duty of the driving current of the second-color light source; and compensating the driving current of the first-color light source and the driving current of the second-color light source based on the driving mode, and wherein the determining the duty of the driving current of the second-color light source comprises: generating representative data by sampling a larger one of third-color and fourth-color data of the image data; and determining the duty of the driving current of the second-color light source based on the representative data.