Patent ID: 7990342
Filing Date: 2011-08-02
Classification: G09G

Abstract:
1. A method of displaying an image in a display screen by displaying a gradation level for each pixel, the method comprising the steps of: forming a subfield group that includes a plurality of subfields each weighted with a brightness weight in a field; forming an emission pattern information, which is a combination of binary values, that indicates an emitted state by a value of “1” or a non-emitted state by a value of “0” corresponding to every subfield in the subfield group, forming each of gradation levels to be displayed using predetermined plural pieces of emission pattern information; making an average value of each of the gradation levels to be displayed using the predetermined pieces of emission pattern information be equal to one of the gradation levels to be displayed; and making an average emission rate for every subfield to be defined by averaging the binary values corresponding to each, of the same subfield; and wherein the predetermined pieces of emission pattern information are preliminarily set for each of the gradation levels to be displayed so that the average emission rate of any subfield with a brightness weight smaller than a maximum brightness weight is equal to or greater than 0.75 among the subfields where the average emission rate is not zero.