Demultiplexing circuit and control method thereof and display device
AssigneeGuangzhou China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorDong YUAN
Life of this patent
Estimating the term…
Abstract
The present application provides a demultiplexing circuit, a control method thereof and a display device, which include at least one demultiplexing module and a switch control module. A compensation unit of each demultiplexing unit in the demultiplexing module is coupled to a voltage level of an output end of a data writing transistor according to a clock signal received by a control end of the data writing transistor. The output end of each switch control unit of the switch control module is electrically connected to the control end of the data writing transistor included in a demultiplexing unit.
Claims20
A demultiplexing circuit, comprising:
- at least one demultiplexing module, in which each demultiplexing module is electrically connected to an input signal line and a plurality of output signal lines, each demultiplexing module comprises a plurality of demultiplexing units, each of the demultiplexing units comprises a data writing transistor and a compensation unit electrically connected to the data writing transistor, an output end of the data writing transistor is electrically connected to a corresponding output signal line;
- and
- a switch control module, comprising a plurality of switch control units electrically connected to a switch control line, in which each of the switch control units is electrically connected to a clock signal line, each of the switch control units has an output end electrically connected to a control end of the data writing transistor of one of the demultiplexing units,
- wherein each of the switch control units is configured to output the clock signal transmitted by the clock signal line to the control end of a corresponding demultiplexing unit according to a switch control signal transmitted by the switch control line, the compensation unit of each of the demultiplexing units is configured to detect a threshold voltage of the data writing transistor and receive a corresponding compensation control signal to compensate for the threshold voltage of the data writing transistor.
A control method for a demultiplexing circuit, in which the demultiplexing circuit comprises at least one demultiplexing module, a switch control module and a reset control module, each demultiplexing module comprises a plurality of demultiplexing units, each of the demultiplexing units comprises a data writing transistor and a compensation unit electrically connected to the data writing transistor, the switch control module and the reset control module are coupled to each of the demultiplexing units, and the method comprises:
- outputting, by the switch control module, a clock signal with a first voltage level to a control end of the data writing transistor of the demultiplexing unit according to a switch control signal to reset a voltage level of the control end of the data writing transistor;
- outputting, by the reset control module, a reset signal to an output end of the data writing transistor of the demultiplexing unit according to a reset control signal to reset the voltage level of the output end of the data writing transistor;
- transmitting, by the switch control module, the clock signal with a second voltage level to the control end of the data writing transistor according to the switch control signal to detect a threshold voltage of the data writing transistor by the compensation unit comprised in the demultiplexing unit;
- and
- compensating, by the compensation unit of the demultiplexing unit, for the threshold voltage of the data writing transistor according to a corresponding compensation control signal.
A display device, which comprises a demultiplexing circuit, the demultiplexing circuit comprising:
- at least one demultiplexing module, in which each demultiplexing module is electrically connected to an input signal line and a plurality of output signal lines, each demultiplexing module comprises a plurality of demultiplexing units, each of the demultiplexing units comprises a data writing transistor and a compensation unit electrically connected to the data writing transistor, an output end of the data writing transistor is electrically connected to a corresponding output signal line;
- and
- a switch control module, comprising a plurality of switch control units electrically connected to a switch control line, in which each of the switch control units is electrically connected to a clock signal line, each of the switch control units has an output end electrically connected to a control end of the data writing transistor of one of the demultiplexing units,
- wherein each of the switch control units is configured to output the clock signal transmitted by the clock signal line to the control end of a corresponding demultiplexing unit according to a switch control signal transmitted by the switch control line, the compensation unit of each of the demultiplexing units is configured to detect a threshold voltage of the data writing transistor and receive a corresponding compensation control signal to compensate for the threshold voltage of the data writing transistor.
Dependencies are inferred from the claim text.