Voltage setting method for display device

A voltage-setting method for a display device for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method comprising:

• setting emission duty ratios with respect to the maximum luminances;
• setting first power voltages with respect to the maximum luminances based on a first maximum luminance;
• setting black data voltages with respect to the maximum luminances based on a second maximum luminance;
• setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance;
• setting a same first power voltage with respect to ones of the maximum luminances that are less than or equal to the third maximum luminance;
• setting a same emission duty ratio with respect to ones of the maximum luminances that are greater than or equal to the third maximum luminance;
• setting at least one maximum luminance, for which a smallest one of the emission duty ratios is set, as the fourth maximum luminance;
• setting first difference values with respect to maximum luminances that are less than the second maximum luminance and that are greater than the third maximum luminance;
• and
• performing first interpolation using a difference value set with respect to the second maximum luminance and a difference value set with respect to the third maximum luminance,
• wherein the second maximum luminance is greater than the third maximum luminance and is greater than the fourth maximum luminance, and the third maximum luminance and the fourth maximum luminance are different.

A voltage-setting method for a display device for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method comprising:

• setting emission duty ratios with respect to the maximum luminances;
• setting first power voltages with respect to the maximum luminances based on a first maximum luminance;
• setting black data voltages with respect to the maximum luminances based on a second maximum luminance;
• setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance;
• selecting a difference value of an anode initialization voltage and a first power voltage with respect to the second maximum luminance;
• repeatedly testing test black data voltages based on the difference value with respect to the second maximum luminance;
• setting a black data voltage with respect to the second maximum luminance;
• displaying a black image;
• applying offsets based on the black data voltage with respect to the second maximum luminance;
• setting black data voltages with respect to other ones of the maximum luminances;
• repeatedly testing test difference values based on a black data voltage set with respect to the third maximum luminance;
• setting a difference value with respect to the third maximum luminance;
• displaying a black image;
• repeatedly testing test difference values based on a black data voltage set with respect to the fourth maximum luminance;
• setting a difference value with respect to the fourth maximum luminance;
• displaying a black image;
• setting first difference values with respect to maximum luminances that are less than the second maximum luminance and that are greater than the third maximum luminance;
• and
• performing first interpolation using the difference value set with respect to the second maximum luminance and the difference value set with respect to the third maximum luminance such that a difference between the first difference values is in proportion to a difference between first power voltages with respect to corresponding maximum luminances.