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US 12,118,920 B2Granted
Display panel and driving method thereof
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorWenfang Li
Life of this patent
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Abstract
A display panel and a driving method thereof are provided. The display panel includes a power supply module, a driving module, a current detection module, and a control module. The current detection module detects a driving current of the driving module and outputs a first detection signal when a driving current is greater than a threshold current. The control module receives the first detection signal, regulates and outputs a first data voltage equal to a driving voltage according to the first detection signal, and transmits the first data voltage into the driving module.
Claims16
A display panel, comprising:
- a power supply module;
- a driving module electrically connected to the power supply module, wherein the power supply module provides a driving voltage to the driving module;
- a current detection module electrically connected to the driving module, wherein the current detection module is configured to detect a driving current of the driving module and to output a first detection signal when the driving current is greater than a threshold current;
- and
- a control module electrically connected to the current detection module and the driving module, wherein the control module is configured to receive the first detection signal, to regulate and output a first data voltage equal to the driving voltage according to the first detection signal, and to transmit the first data voltage into the driving module,
- wherein the current detection module comprises:
- a detection resistor electrically connected to the driving module;
- and
- a current detection integrated circuit electrically connected to the detection resistor,
- wherein the current detection integrated circuit is configured to calculate a detection current according to a detection voltage between two sides of the detection resistor, to compare the detection current to the threshold current, to output the first detection signal when the detection current is greater than the threshold current, and to output a second detection signal when the detection current is less than or equal to the threshold current,
- wherein the control module comprises:
- a field programmable gate array (FPGA) control circuit electrically connected to the current detection integrated circuit;
- a voltage raising circuit electrically connected to the FPGA control circuit;
- and
- an electric level conversion integrated circuit electrically connected to the voltage raising circuit, and
- wherein the FPGA control circuit is configured to receive the first detection signal or the second detection signal and to control the voltage raising circuit to output a first voltage or a second voltage, the electric level conversion integrated circuit correspondingly converts the first voltage or the second voltage into the first data voltage or a second data voltage and transmits the first data voltage or the second data voltage into the driving module.
13 more elements
A driving method of a display panel, wherein the display panel comprises a power supply module, a driving module, a light emitting module, a current detection module, and a control module, and the driving method of the display panel comprises:
- providing a driving voltage to the driving module by the power supply module;
- driving the light emitting module to emit light by the driving module;
- detecting a driving current of the driving module and outputting a first detection signal by the current detection module when the driving current is greater than a threshold current;
- and
- receiving the first detection signal, regulating and outputting a first data voltage equal to the driving voltage according to the first detection signal, and inputting the first data voltage into the driving module by the control module,
- wherein
- in the step of detecting the driving current of the driving module and outputting the first detection signal by the current detection module when the driving current is greater than the threshold current, when the driving current is less than or equal to the threshold current, the current detection module outputs a second detection signal, the second detection signal is high electric level, and the first detection signal is low electric level;
- and
- in the step off receiving the first detection signal, regulating and outputting the first data voltage equal to the driving voltage according to the first detection signal, and outputting the first data voltage into the driving module by the control module, the control module further receives the second detection signal, regulates and outputs a second data voltage equal to the driving voltage according to the second detection signal, and inputs the second data voltage into the driving module,
- wherein the control module comprises a field programmable gate array (FPGA) control circuit, a voltage raising circuit, and an electric level conversion integrated circuit, and the step of receiving the first detection signal, regulating and outputting the first data voltage equal to the driving voltage according to the first detection signal, and outputting the first data voltage into the driving module by the control module comprises:
- the FPGA control circuit receives the first detection signal or the second detection signal and controls the voltage raising circuit to output a first voltage or a second voltage;
- the voltage raising circuit outputs the first voltage or the second voltage;
- and
- the electric level conversion integrated circuit correspondingly converts the first voltage or the second voltage into the first data voltage or the second data voltage.
11 more elements
Dependencies are inferred from the claim text.