Tone correction data preparation device, tone correction device, electronic apparatus, and tone correction data preparation method

A tone correction data preparation device comprising:

• a white gamma curve calculating section which calculates a white gamma curve based on a deviation of a tone of white displayed on a display panel with respect to a target tone value and on a measured gamma value, the tone including a maximum tone and being measured at one or more measurement points, the measured gamma value being measured at one or more measurement points which are at respective one or more arbitrary tones excluding a maximum tone in a white gamma characteristic of the display panel;
• a three primary gamma curve calculating section which calculates three primary gamma curves of respective red, green, and blue by applying, to the white gamma curve, a relation obtained by comparing a gamma curve of white of a reference display panel having an ideal gamma characteristic with gamma curves of respective red, green, and blue of the reference display panel;
• and
• a conversion value calculating section which calculates, based on expected output values of respective three primary colors and the three primary gamma curves, a conversion value for converting inputted display data into corrected display data in which a white balance has been corrected, the expected output values being calculated by the conversion value calculating section based on highest tone values of respective three primary colors of the reference display panel and on a highest tone value of white of the display panel.