Lg Display Co., Ltd.

Ilkwon Park

Dongkyoung Oh

Kyeongsu Mun

An organic light emitting diode display device can include a display panel in which data lines and gate lines intersect each other; an image processing circuit converting a first digital image data including a plurality of color digital data into any one of a second digital image data including the plurality of color digital data and a first white digital data and a third digital image data including a plurality of color conversion digital data that converts the plurality of color digital data and a second white digital data according to whether the first digital image data is included in a first gray scale region or a second gray scale region which is higher than the first gray scale region; and a data driving circuit converting the second digital image data into data voltages and supplying the data voltages to the data lines.

Organic light emitting diode display device and method for driving the same

An optical compensation method for an organic light emitting display device comprises: setting initial gain values of RGB subpixels; making each of the RGB subpixels converge on target luminance; selecting subpixels to emit light with the W subpixel from the RGB subpixels, and setting an initial gain value of the W subpixel; measuring color coordinates and luminance of the W subpixel to which the initial gain value is applied; calculating the luminance ratio of the W subpixel and the selected subpixels; adjusting maximum gains of the W subpixel and the selected subpixels; measuring maximum color coordinates and luminance ratio of the W subpixel and the selected subpixels; and making the W subpixel and the selected subpixels converge on target color coordinates and luminance.

Growing community of inventors

Goyang-si, South Korea

Ilkwon Park