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US 12,755,692 B2Granted
Display apparatus and sensing method for compensation
AssigneeLG Display Co., Ltd.
InventorsJunyoung Lee, Heeye Oh, Sanggoo Kwon
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Abstract
A display apparatus and a sensing method for compensation is disclosed, and more particularly, a method for sensing and compensating for degradation of a driving transistor of a display apparatus and a display apparatus performing the method is disclosed. A method for sensing a threshold voltage of a driving transistor after a display apparatus is powered on and before an image is displayed, and a display apparatus performing the sensing method are provided. Accordingly, it is possible to reduce the sensing time in sensing the threshold voltage of the driving transistor.
Claims13
A display apparatus comprising:
- a display panel including a plurality of subpixels, each of the plurality of subpixels including a driving transistor;
- a gate driver configured to supply a scan signal to the plurality of subpixels through gate lines that are connected to the plurality of subpixels;
- and
- a data driver configured to supply data voltages to the plurality of subpixels through data lines that are connected to the plurality of subpixels,
- wherein a fourth sensing during which a threshold voltage of a driving transistor from at least one of the plurality of subpixels is sensed is performed responsive to a power signal changing from a first level to a second level that initiates a process of turning on the display panel, the fourth sensing occurring while the display panel is turned off and before an image is displayed by the display panel,
- wherein a third sensing during which the threshold voltage of the driving transistor is sensed is performed after the image was displayed by the display panel and while the display panel is turned off, and
- wherein a time period of the fourth sensing is shorter than a time period of the third sensing.
4 more elements
Dependencies are inferred from the claim text.