Display Substrate and Driving Method and Preparation Method Therefor, and Display Apparatus
AssigneesChengdu Boe Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd., Beijing BOE Technology Development Co., Ltd.
InventorsZhu WANG, Zhongman ZHAO, Ling SHI
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Abstract
A display substrate includes a plurality of circuit units, and at least one circuit unit includes a pixel driving circuit, a sensing circuit and a photosensitive device, wherein the pixel driving circuit includes at least one light emitting control transistor, the sensing circuit at least includes a sensing control transistor, the sensing control transistor is connected to the photosensitive device, the light emitting control transistor and the sensing control transistor are different types of transistors; and in the at least one circuit unit, the light emitting control transistors and the sensing control transistors are connected to the same light emitting signal line.
Claims21
A display substrate, comprising a plurality of circuit units, wherein
- at least one circuit unit comprises a pixel driving circuit, a sensing circuit and a photosensitive device, the pixel driving circuit at least comprises a driving transistor and at least one light emitting control transistor;
- a first end of the light emitting control transistor is connected to a first power supply line, and a second end of the light emitting control transistor is connected to a first end of the driving transistor;
- or the first end of the light emitting control transistor is connected to a second end of the driving transistor, and the second end of the light emitting control transistor is connected to a light emitting device;
- the sensing circuit at least comprises a sensing control transistor, a first end of the sensing control transistor is connected with the photosensitive device, a second end of the sensing control transistor is connected to a sensing signal line, and the light emitting control transistor and the sensing control transistor are different types of transistors;
- and
- in at least one circuit unit, the light emitting control transistor and the sensing control transistor are connected to a same light emitting signal line, and the light emitting signal line is configured to provide a light emitting control signal to the pixel driving circuit.
(canceled)
A driving method of a display substrate, which comprises a plurality of circuit units, and at least one circuit unit comprises a pixel driving circuit, a sensing circuit and a photosensitive device;
- wherein
- the pixel driving circuit at least comprises a driving transistor and at least one light emitting control transistor;
- wherein
- a first end of the light emitting control transistor is connected to a first power supply line, and a second end of the light emitting control transistor is connected to a first end of the driving transistor;
- or
- the first end of the light emitting control transistor is connected to a second end of the driving transistor, and the second end of the light emitting control transistor is connected to a light emitting device;
- the sensing circuit at least comprises a sensing control transistor, wherein a first end of the sensing control transistor is connected with the photosensitive device, a second end of the sensing control transistor is connected to a sensing signal line, and the light emitting control transistor and the sensing control transistor are different types of transistors;
- in at least one circuit unit, the light emitting control transistor and the sensing control transistor are connected to a same light emitting signal line, the light emitting signal line is configured to provide a light emitting control signal to the pixel driving circuit;
- and
- the driving method comprises following periods:
- in a first sensing period, controlling, by the light emitting signal line, the sensing circuit to generate a photosensitive current;
- and
- in a second sensing period, controlling, by the light emitting signal line, the pixel driving circuit to output a driving current.
A preparation method for a display substrate comprising a plurality of circuit units, the method comprising:
- forming a pixel driving circuit, a sensing circuit and a photosensitive device in at least one circuit unit;
- wherein
- the pixel driving circuit at least comprises a driving transistor and at least one light emitting control transistor, wherein
- a first end of the light emitting control transistor is connected to a first power supply line, and a second end of the light emitting control transistor is connected to a first end of the driving transistor;
- or
- the first end of the light emitting control transistor is connected to a second end of the driving transistor, and the second end of the light emitting control transistor is connected to a light emitting device;
- the sensing circuit at least comprises a sensing control transistor, wherein a first end of the sensing control transistor is connected with the photosensitive device, a second end of the sensing control transistor is connected to a sensing signal line, and the light emitting control transistor and the sensing control transistor are different types of transistors;
- and
- in at least one circuit unit, the light emitting control transistor and the sensing control transistor are connected to the same light emitting signal line, the light emitting signal line is configured to provide a light emitting control signal to the pixel driving circuit.
Dependencies are inferred from the claim text.