Oled pixel circuit and method for driving the same, display apparatus
AssigneeBoe Technology Group Co., Ltd.
InventorLing SHI
Life of this patent
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Abstract
An OLED pixel circuit includes an initialization and compensation sub-circuit configured to initialize a driving sub-circuit and compensate a threshold voltage of the driving sub-circuit; a data writing sub-circuit configured to input a signal of a second signal end to the driving sub-circuit; a light-emitting control sub-circuit configured to input a signal of the first voltage end to the driving sub-circuit, and input a driving signal output by the driving sub-circuit to a light emitting sub-circuit; the driving sub-circuit configured to output the driving signal; and the light emitting sub-circuit configured to emit light.
Claims15
An OLED pixel circuit, comprising:
- an initialization and compensation sub-circuit, connected to a driving sub-circuit, a first signal end and an initial voltage end, and configured to initialize the driving sub-circuit and compensate a threshold voltage of the driving sub-circuit according to a signal input by the initial voltage end under control of a signal from the first signal end;
- a data writing sub-circuit, connected to the driving sub-circuit, the first signal end and a second signal end, and configured to input a signal of the second signal end to the driving sub-circuit under control of a signal from the first signal end;
- a light-emitting control sub-circuit, connected to the driving sub-circuit, a light emitting sub-circuit, an enable signal end and a first voltage end;
- and configured to input a signal of the first voltage end to the driving sub-circuit, and to input a driving signal output by the driving sub-circuit to the light emitting sub-circuit under control of a signal from the enable signal end;
- the driving sub-circuit, further connected to a third signal end, and configured to output the driving signal under control of a signal from the third signal end and in a case of the signal of the first voltage end being input to the driving sub-circuit;
- and
- the light emitting sub-circuit, further connected to a second voltage end, and configured to emit light under a driving of the second voltage end and the driving signal output by the light-emitting control sub-circuit.
A method for driving an OLED pixel circuit, comprising:
- in a first phase of a frame, by a initialization and compensation sub-circuit, inputting a reset signal output via an initial voltage end to a driving sub-circuit, initializing the driving sub-circuit and compensating a threshold voltage of the driving sub-circuit under control of a signal from a first signal end;
- inputting, by a data writing sub-circuit, a data signal output via a second signal end to the driving sub-circuit under control of the signal from the first signal end, to store the data signal into the driving sub-circuit;
- in a second phase of the frame, inputting, by a light-emitting control sub-circuit, a supply voltage output via a first voltage end to the driving sub-circuit under control of a signal from an enable signal end;
- outputting, by the driving sub-circuit, a driving signal under control of a signal from a third signal end;
- inputting, by the light-emitting control sub-circuit, the driving signal output by the driving sub-circuit to a light emitting sub-circuit under control of a signal from the enable signal end;
- and emitting light, by the light emitting sub-circuit under a driving of the driving signal input by the light-emitting control sub-circuit and a second voltage end.
Dependencies are inferred from the claim text.