Organic light emitting display device and driving method thereof

A method for driving an organic light emitting display (OLED) device, the method comprising:

• determining current flowing across an element to obtain an increase estimated current value having at least one increased gray level and a decrease estimated current value having at least one decreased gray level;
• measuring the current flowing across the element to obtain a measured current value;
• and
• when a result value obtained by adding a marginal value to or subtracting the marginal value from the measured current value is smaller than the estimated current value, reducing the luminance, when the result value is larger than the estimated current value, increasing the luminance, and when the result value is equal to the estimated current value, maintaining the luminance,
• wherein the estimated current value is obtained by a look-up table,
• wherein the look-up table obtains the increase estimated current value and the decrease estimated current value according to the estimated current value,
• wherein the look-up table comprises:
• an increase estimated current data comprising the respective increments with respect to the current values flowing across the red, green, and blue elements to allow for obtaining the increase estimated current value according to the estimated current value provided by the estimating operation;
• and
• a decrease estimated current data comprising the respective decrements with respect to the current values flowing across the red, green, and blue elements to allow for obtaining the decrease estimated current value according to the estimated current value provided by the estimating operation.

A method for driving an organic light emitting display (OLED) device, the method comprising:

• determining current flowing across an element to obtain an increase estimated current value having at least one increased gray level and a decrease estimated current value having at least one decreased gray level;
• measuring the current flowing across the element to obtain a measured current value;
• and
• when a first result value obtained by adding an adjustment value to the increase estimated current value is smaller than the measured current value, decreasing the luminance, when a second result value obtained by adding the adjustment value to the measured current value is greater than the decrease estimated current value, increasing the luminance, and when the first result value or the second result value are equal to the measured current value, maintaining the luminance,
• wherein the estimated current value is obtained by a look-up table,
• wherein the look-up table obtains the increase estimated current value and the decrease estimated current value according to the estimated current value, and
• wherein the look-up table comprises:
• an increase estimated current data comprising the respective increments with respect to the current values flowing across the red, green, and blue elements to allow for obtaining the increase estimated current value according to the estimated current value provided by the estimating operation, and
• a decrease estimated current data comprising the respective decrements with respect to the current values flowing across the red, green, and blue elements to allow for obtaining the decrease estimated current value according to the estimated current value provided by the estimating operation.