Display device capable of performing compensation operation even under moisture permeated condition and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsHyeongi Lee, JaeHong Kim
Life of this patent
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Abstract
A display device includes a display panel in which a plurality of pixels is disposed, a timing controller configured to output a sensing pulse and a video data signal, and a data driver configured to apply sensing pulse and outputs a data voltage to the plurality of pixels according to the video data signal, in which the data driver includes a plurality of source integrated circuits, each of the plurality of source integrated circuits receives a plurality of delay pulses, and the timing controller compares timings of the plurality of delay pulses and compensate for the video data signal.
Claims18
A display device, comprising:
- a display panel in which a plurality of pixels is disposed;
- a timing controller configured to output a sensing pulse and a video data signal;
- and
- a data driver configured to apply the sensing pulse and outputs a data voltage to the plurality of pixels according to the video data signal, and including a plurality of source integrated circuits, each of the plurality of source integrated circuits receiving a plurality of delay pulses from the timing controller,
- wherein the timing controller compares timings of the plurality of delay pulses to compensate for the video data signal,
- wherein the data driver further includes a source printed circuit board connected to the plurality of source integrated circuits and a sensing line formed in the source printed circuit board and the plurality of source integrated circuits, and
- wherein the sensing pulse is transmitted through the sensing line.
A driving method of a display device which includes a display panel in which a plurality of pixels is disposed, a timing controller configured to output a sensing pulse and a video data signal, and a data driver which receives a plurality of delay pulses, the driving method comprising:
- a signal generating step of outputting the sensing pulse;
- a delay detecting step of analyzing the plurality of delay pulses and outputting delay information indicating a source integrated circuit having a defect;
- and
- a data compensating step of compensating for the video data signal according to the delay information,
- wherein, in the delay detecting step, a timing of each of a plurality of delay pulses in a normal state and a timing of each of a plurality of delay pulses in a defective state are compared and the delay information indicating a source integrated circuit having the defect is generated.
A display device, comprising:
- a display panel where a plurality of pixels are disposed;
- a timing controller configured to output a sensing pulse through a first sensing line for determining moisture permeation in the plurality of pixels;
- a plurality of source integrated circuits configured to receive the sensing pulse and output a plurality of delay pulses to the timing controller,
- wherein the timing controller is configured to compare timings of the plurality of delay pulses in a normal state and a defective state, to generate data reflecting the moisture permeation, to compensate for the video data signal based on the generated data reflecting the moisture permeation and configured to output a compensated video signal to the first source integrated circuit through a first feedback line, and
- wherein the plurality of source integrated circuits are configured to output a data voltage to the plurality of pixels in accordance with the compensated video data signal.
Dependencies are inferred from the claim text.