Compensation method and compensation apparatus for OLED pixel and display apparatus
AssigneeBoe Technology Group Co., Ltd.
InventorsYi Chen, Min He
Life of this patent
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Abstract
The present disclosure relates to a compensation method and a compensation apparatus for an OLED pixel and a display apparatus, which relates to the field of display technology. The compensation method for an OLED pixel includes: acquiring a threshold voltage of a driving transistor; acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor; and compensating the OLED pixel according to the mobility of the driving transistor.
Claims14
A compensation method for an OLED pixel, comprising:
- acquiring a threshold voltage of a driving transistor;
- acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor;
- and
- compensating the OLED pixel according to the mobility of the driving transistor,
- wherein the acquiring a threshold voltage of a driving transistor comprises:
- applying a first driving voltage to a control terminal of the driving transistor to turn on the driving transistor;
- detecting a critical voltage of a first terminal of the driving transistor when an output current of the driving transistor changes from non-zero to zero;
- acquiring the threshold voltage of the driving transistor according to the first driving voltage and the critical voltage;
- and
- setting an initial voltage of the first terminal of the driving transistor to zero while the first driving voltage is applied to the control terminal of the driving transistor.
A compensation method for an OLED pixel, comprising:
- acquiring a threshold voltage of a driving transistor;
- acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor;
- and
- compensating the OLED pixel according to the mobility of the driving transistor;
- wherein the acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor comprises:
- applying a second driving voltage to a control terminal of the driving transistor to turn on the driving transistor;
- detecting a reference voltage of a first terminal of the driving transistor;
- and
- acquiring the mobility of the driving transistor according to the reference voltage,
- wherein a difference value between the second driving voltage and the threshold voltage of the driving transistor is at least ten times higher than the reference voltage.
A compensation method for an OLED pixel, comprising:
- acquiring a threshold voltage of a driving transistor;
- acquiring a mobility of the driving transistor according to the threshold voltage of the driving transistor;
- and
- compensating the OLED pixel according to the mobility of the driving transistor;
- wherein a voltage is provided to a control terminal of the driving transistor by a data line through a first transistor, and a voltage is provided to a first terminal of the driving transistor by a detection line through a second transistor,
- wherein the first transistor is turned on in response to a first scan signal and the second transistor is turned on in response to a second scan signal.
Dependencies are inferred from the claim text.