Patent ID: 8659709

Claim:
A display device, comprising: an image display part having a plurality of pixels for displaying an image based on an image signal; a chromaticity adjusting part that adjusts chromaticity of the pixels; a light source that supplies light to the image display part; a usage amount measuring part that measures a cumulative usage amount of the light source; a memory that stores in advance data relating to an amount of chromaticity change in relation to the cumulative usage amount of the light source; and a correction processing part that conducts a process to modify the image signal based on the data stored in the memory and the cumulative usage amount of the light source measured by the usage amount measuring part, to compensate for chromaticity shift over time, wherein the correction processing part determines a first chromaticity change amount from the data stored in the memory, with reference to a first cumulative usage amount that is a total cumulative usage amount of the light source measured by the usage amount measuring part up to the present, the correction processing part determines a second chromaticity change amount from the data stored in the memory, with reference to a second cumulative usage amount that is measured by the usage amount measuring part and that is a cumulative usage amount of the light source up to when the chromaticity of the pixels was adjusted by the chromaticity adjusting part, and the correction processing part obtains a target value to which chromaticity modification is performed by subtracting the second chromaticity change amount from the first chromaticity change amount, and modifies the image signal based on the target value to which the chromaticity modification is to be performed.