DISPLAY DEVICE AND DISPLAY DEVICE DRIVING MTEHOD

• Main Authors: HYUN, WON SIK, LEE, JAE HOON, LEE, BAEK WOON, LEONID KAPLAN, NA, HEUNG YEOL
• Format: Patent
• Language: English; Korean
• Published: 02.12.2014
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DISPLAY; EDUCATION; PHYSICS; SEALS

The present invention relates to a technique of reducing the brightness non-uniformity of a display device due to the voltage drop of the display device using an organic light emitting diode. A display device according to the present invention includes a display part which includes pixels which emit light according to each data voltage; a timing control part which divides the region of the display part into an upper part, a center part, and a lower part, divides the time of a frame into light emitting subframes of a light emitting period and the blank subframe of a blank period which supplies a black data signal, and generates an image data signal corresponding to each subframe; and a data driving part which applies data voltages corresponding to the image data signal to a display part. The timing control part divides the upper part into a first group to a third group, the center part into a forth group to a seventh group, and the lower part into at least the eighth group to a tenth group, differentiates the light emitting subframe scan point of each group from the scan point of the blank subframe, and gradually increases the light emitting period from the upper part to the center part and from the lower part to the center part, and reduces the blank period as the rate of the increased light emitting period.