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US 11,908,403 B2Granted
Driving circuit of light-emitting device, backlight module and display panel
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsBin Liu, Quansheng Liu
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Abstract
A driving circuit of a light-emitting device, a backlight module and a display panel are disclosed in the present disclosure. The driving circuit of the light-emitting device includes a light-emitting device, a driving transistor, a data signal writing module, a first power signal writing module, a second power signal writing module, a light-emitting control module, and a storage module.
Claims20
A driving circuit of a light-emitting device, comprising:
- a light-emitting device, connected in series to a light-emitting circuit formed by a first power signal and a second power signal;
- a driving transistor, wherein a source and a drain of the driving transistor are connected in series to the light-emitting circuit, and the driving transistor is configured to control a current flowing through the light-emitting circuit;
- a data signal writing module, receiving a first scan signal and a data signal, and electrically connected to one of the source and the drain of the driving transistor, wherein the data signal writing module is configured to write the data signal to one of the source and the drain of the driving transistor under control of the first scan signal;
- a first power signal writing module, receiving a second scan signal and the first power signal, and electrically connected to a gate of the driving transistor, wherein the first power signal writing module is configured to write the first power signal into the gate of the driving transistor under control of the second scan signal;
- a second power signal writing module, receiving a third scan signal and the second power signal, and electrically connected to the gate of the driving transistor, wherein the second power signal writing module is configured to write the second power signal into the gate of the driving transistor under control of the third scan signal;
- a light-emitting control module, receiving a light-emitting control signal and connected in series to the light-emitting circuit, wherein the light-emitting control module is configured to control the light-emitting circuit to be turned on or to be turned off based on the light-emitting control signal;
- and
- a storage module, electrically connected to the gate of the driving transistor and receiving the second power signal, wherein the storage module is configured to store a potential of the gate of the driving transistor.
5 more elements
A backlight module, comprising:
- a data line, configured to provide a data signal;
- a first scan line, configured to provide a first scan signal;
- a second scan line, configured to provide a second scan signal;
- a third scan line, configured to provide a third scan signal;
- a light-emitting control signal line, configured to provide a light-emitting control signal;
- and
- a driving circuit of a light-emitting device, connected to the data line, the first scan line, the second scan line, the third scan line, and the light-emitting control signal line;
- wherein the driving circuit of the light-emitting device includes:
- a light-emitting device, connected in series to a light-emitting circuit formed by a first power signal and a second power signal;
- a driving transistor, wherein a source and a drain of the driving transistor are connected in series to the light-emitting circuit, and the driving transistor is configured to control a current flowing through the light-emitting circuit;
- a data signal writing module, receiving the first scan signal and the data signal, and electrically connected to one of the source and the drain of the driving transistor, wherein the data signal writing module is configured to write the data signal to one of the source and the drain of the driving transistor under control of the first scan signal;
- a first power signal writing module, receiving the second scan signal and the first power signal, and electrically connected to a gate of the driving transistor, wherein the first power signal writing module is configured to write the first power signal into the gate of the driving transistor under control of the second scan signal;
- a second power signal writing module, receiving the third scan signal and the second power signal, and electrically connected to the gate of the driving transistor, wherein the second power signal writing module is configured to write the second power signal into the gate of the driving transistor under control of the third scan signal;
- a light-emitting control module, receiving the light-emitting control signal and connected in series to the light-emitting circuit, wherein the light-emitting control module is configured to control the light-emitting circuit to be turned on or to be turned off based on the light-emitting control signal;
- and
- a storage module, electrically connected to the gate of the driving transistor and receiving the second power signal, wherein the storage module is configured to store a potential of the gate of the driving transistor.
13 more elements
A display panel, comprising:
- a plurality of pixel units arranged in an array, wherein each of the pixel units includes a driving circuit of a light-emitting device, and the driving circuit of the light-emitting device includes:
- a light-emitting device, connected in series to a light-emitting circuit formed by a first power signal and a second power signal;
- a driving transistor, wherein a source and a drain of the driving transistor are connected in series to the light-emitting circuit, and the driving transistor is configured to control a current flowing through the light-emitting circuit;
- a data signal writing module, receiving a first scan signal and a data signal, and electrically connected to one of the source and the drain of the driving transistor, wherein the data signal writing module is configured to write the data signal to one of the source and the drain of the driving transistor under control of the first scan signal;
- a first power signal writing module, receiving a second scan signal and the first power signal, and electrically connected to a gate of the driving transistor, wherein the first power signal writing module is configured to write the first power signal into the gate of the driving transistor under control of the second scan signal;
- a second power signal writing module, receiving a third scan signal and the second power signal, and electrically connected to the gate of the driving transistor, wherein the second power signal writing module is configured to write the second power signal into the gate of the driving transistor under control of the third scan signal;
- a light-emitting control module, receiving a light-emitting control signal and connected in series to the light-emitting circuit, wherein the light-emitting control module is configured to control the light-emitting circuit to be turned on or to be turned off based on the light-emitting control signal;
- and
- a storage module, electrically connected to the gate of the driving transistor and receiving the second power signal, wherein the storage module is configured to store a potential of the gate of the driving transistor.
6 more elements
Dependencies are inferred from the claim text.