Driving circuit and display device
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorWenfang Li
Life of this patent
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Abstract
The present disclosure provides a driving circuit and a display device. An output control module of the driving circuit includes a first resistor, a second resistor, a third resistor, and a switching control unit. The switching control unit connected in series with the third resistor is connected in parallel with the second resistor, and then connected in series with the first resistor. During a first state, the switching control unit is turned off, and the driving circuit outputs a voltage Vout1. During a second state, the switching control unit is turned on, and the driving circuit outputs a voltage Vout2. An absolute value of Vout2 is greater than an absolute value of Vout1.
Claims13
A driving circuit, comprising:
- a power control module and an output control module, wherein an output end of the power control module is connected to an input end of the output control module, and the output control module comprises:
- a first resistor;
- a second resistor;
- a third resistor;
- and
- a switching control unit, wherein the switching control unit connected in series with the third resistor is connected in parallel with the second resistor and then connected in series with the first resistor;
- when the driving circuit is in a first state, the switching control unit is turned off, a branch where the third resistor is disposed is disconnected, the first resistor and the second resistor are connected in series, and the driving circuit outputs a voltage Vout1;
- when the driving circuit is in a second state, the switching control unit is turned on, the branch where the third resistor is disposed is turned on, the third resistor is connected in parallel with the second resistor and then connected in series with the first resistor, and the driving circuit outputs a voltage Vout2;
- wherein an absolute value of the Vout2 is greater than an absolute value of the Vout1;
- wherein the switching control unit comprises a metal oxide semiconductor (MOS) transistor, a dial switch, and a fifth resistor, wherein the dial switch and the fifth resistor are connected in series to form a first branch, the MOS transistor is connected in series with the third resistor, and a gate of the MOS transistor is connected to the first branch;
- and
- wherein a first end of the first branch is connected to an input voltage, a second end of the first branch is grounded, and the dial switch is disposed between a voltage input end of the first branch and the gate of the MOS transistor.
A display device, comprising a driving circuit, wherein the driving circuit comprises:
- a power control module and an output control module, wherein an output end of the power control module is connected to an input end of the output control module, and the output control module comprises:
- a first resistor;
- a second resistor;
- a third resistor;
- and
- a switching control unit, wherein the switching control unit connected in series with the third resistor is connected in parallel with the second resistor and then connected in series with the first resistor;
- when the driving circuit is in a first state, the switching control unit is turned off, a branch where the third resistor is disposed is disconnected, the first resistor and the second resistor are connected in series, and the driving circuit outputs a voltage Vout1;
- when the driving circuit is in a second state, the switching control unit is turned on, the branch where the third resistor is disposed is turned on, the third resistor is connected in parallel with the second resistor and then connected in series with the first resistor, and the driving circuit outputs a voltage Vout2;
- wherein an absolute value of the Vout2 is greater than an absolute value of the Vout1;
- wherein the switching control unit comprises a metal oxide semiconductor (MOS) transistor, a dial switch, and a fifth resistor, wherein the dial switch and the fifth resistor are connected in series to form a first branch, the MOS transistor is connected in series with the third resistor, and a gate of the MOS transistor is connected to the first branch;
- and
- wherein a first end of the first branch is connected to an input voltage, a second end of the first branch is grounded, and the dial switch is disposed between a voltage input end of the first branch and the gate of the MOS transistor.
Dependencies are inferred from the claim text.