Display driving circuit, method for driving timing control circuit, and display device
AssigneesChongqing Boe Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsMing Deng, Jiantao Liu, Zhihua Sun, Wenliang Liu
Life of this patent
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Abstract
A display driving circuit is provided. The display driving circuit includes a source driver, a temperature detecting circuit, and a timing control circuit, wherein the temperature detecting circuit is connected to the timing control circuit, and is configured to detect a temperature of the source driver; and the timing control circuit is further connected to the source driver, and is configured to output a source signal to the source driver based on the temperature of the source driver; wherein a magnitude of a voltage of the source signal is negatively related to the temperature of the source driver.
Claims18
A display driving circuit, comprising:
- a source driver, a temperature detecting circuit, and a timing control circuit, wherein
- the temperature detecting circuit is connected to the timing control circuit, and is configured to detect a temperature of the source driver;
- the timing control circuit comprises a control sub-circuit and a timing controller;
- and the timing controller stores a first mapping relationship between gray scales and voltages of a source signal;
- the control sub-circuit is connected to the temperature detecting circuit and the timing controller, and the timing controller is further connected to the source driver;
- and
- the control sub-circuit is configured to control the timing controller to output the source signal to the source driver based on the first mapping relationship when the temperature of the source driver is less than a temperature threshold, and to control the timing controller to output the source signal to the source driver based on a second mapping relationship between the gray scales and the voltages of the source signal when the temperature of the source driver is greater than or equal to the temperature threshold;
- wherein each voltage of the source signal in the second mapping relationship is determined based on a product of a corresponding voltage of the source signal in the first mapping relationship and a gain coefficient, the gain coefficient being less than 1, and a magnitude of the voltage of the source signal is negatively related to the temperature of the source driver.
A method for driving a timing control circuit, wherein the timing control circuit comprises a control sub-circuit and a timing controller;
- the timing controller stores a first mapping relationship between gray scales and voltages of the source signal, and the method comprising:
- obtaining a temperature of a source driver through a temperature detecting circuit;
- controlling, by the control sub-circuit, the timing controller to output the source signal to the source driver based on the first mapping relationship when the temperature of the source driver is less than a temperature threshold;
- and
- controlling, by the control sub-circuit, the timing controller to output the source signal to the source driver based on a second mapping relationship between the gray scales and the voltages of the source signal when the temperature of the source driver is greater than or equal to the temperature threshold;
- wherein each voltage of the source signal in the second mapping relationship is determined based on a product of a corresponding voltage of the source signal in the first mapping relationship and a gain coefficient, the gain coefficient being less than 1, and a magnitude of the voltage of the source signal is negatively related to the temperature of the source driver.
A display device, comprising a display panel and a display driving circuit, wherein the display driving circuit is connected to the display panel, and is configured to drive the display panel to display;
- wherein the display driving circuit comprises a source driver, a temperature detecting circuit, and a timing control circuit;
- the temperature detecting circuit is connected to the timing control circuit, and is configured to detect a temperature of the source driver;
- the timing control circuit comprises a control sub-circuit and a timing controller;
- and
- the timing controller stores a first mapping relationship between gray scales and voltages of a source signal;
- the control sub-circuit is connected to the temperature detecting circuit and the timing controller, and the timing controller is further connected to the source driver;
- and
- the control sub-circuit is configured to control the timing controller to output the source signal to the source driver based on the first mapping relationship when the temperature of the source driver is less than a temperature threshold, and to control the timing controller to output the source signal to the source driver based on a second mapping relationship between the gray scales and the voltages of the source signal when the temperature of the source driver is greater than or equal to the temperature threshold;
- wherein each voltage of the source signal in the second mapping relationship is determined based on a product of a corresponding voltage of the source signal in the first mapping relationship and a gain coefficient, the gain coefficient being less than 1, and a magnitude of the voltage of the source signal is negatively related to the temperature of the source driver.
Dependencies are inferred from the claim text.