CROSS REFERENCE TO RELATED APPLICATION

This application claims priority from Korean Patent Application No. 10-2018-0105745, filed Sep. 5, 2018, which is hereby incorporated by reference for all purposes as if fully set forth herein.

BACKGROUND

Technical Field

Embodiments of the present disclosure relate to a timing controller, an organic light-emitting display device, and a driving method thereof.

Description of the Related Art

With advancement in information-oriented societies, requirements for display devices displaying an image have increased in various types, and various types of flat-panel display devices such as a liquid crystal display device, a plasma display device, and an organic light-emitting display device have emerged.

Recently, organic light-emitting display devices which can be easily decreased in thickness and which are excellent in viewing angle and contrast range, and the like have widely utilized. An organic light-emitting display device emits light to display an image by supplying a drive current to organic light emitting diodes which are spontaneous light emitting elements. When an organic light emitting diode emits light for a long time, deterioration occurs. Deterioration can be more likely to occur, particularly, when a still image with high luminance is displayed. An organic light emitting diode can cause a problem in that an afterimage appears to shorten a lifespan thereof due to deterioration.

A difference in threshold voltage can occur between driving transistors that supply a drive current to organic light emitting diodes due to a process deviation and thus a difference in drive current can occur between subpixels. The drive current can deviate depending on electron mobility. When a deviation in drive current occurs, there is a problem in that luminance becomes uneven and image quality degrades.

BRIEF SUMMARY

One or more embodiments of the present disclosure provide a timing controller, an organic light-emitting display device, and a driving method thereof that can prevent a degradation in image quality. The organic light-emitting display device according to one or more embodiments of the present disclosure senses characteristics based on threshold voltage and electron mobility to prevent uneven display on the device.

According to an aspect of embodiments of the disclosure, there is provided an organic light-emitting display device including: a display panel in which a plurality of data lines and a plurality of gate lines are arranged to overlap each other and that includes a plurality of subpixels which are arranged in areas in which the plurality of data lines and the plurality of gate lines overlap each other; a data driver that supplies a data signal to the plurality of data lines; a gate driver that supplies a gate signal to the plurality of gate lines; and a timing controller that controls the data driver and the gate driver such that the data driver outputs a sensing voltage in a first section, outputs a compensation voltage in a second section, and outputs a data voltage in a third section.

According to another aspect of embodiments of the disclosure, there is provided a timing controller circuit including: a data extracting unit configured to extract image data which is stored in a frame memory; a lookup table configured to store compensation voltage information on a voltage level of a compensation voltage corresponding to the image data; and a data processing unit configured to be supplied with the compensation voltage information on the voltage level of the compensation voltage from the lookup table depending on the image data extracted by the data extracting unit and to output the compensation voltage information.

According to another aspect of embodiments of the disclosure, there is provided a method of driving an organic light-emitting display device in which a plurality of data lines and a plurality of gate lines are arranged and an image including a plurality of frames is driven, the method including: a step of outputting a sensing voltage in one frame section; a step of outputting a compensation voltage in the one frame section; and a step of outputting a data voltage in the one frame section.

According to the embodiments of the disclosure, it is possible to provide a timing controller, an organic light-emitting display device, and a driving method thereof that can prevent a degradation in image quality.

