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US 2022/0036835 A1Published application
Driving method and driver chip for display panel, and display device
AssigneesChongqing Hkc Optoelectronics Technology Co., Ltd., Hkc Corporation Limited
InventorsWei Chen, Wei Li
Life of this patent
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Abstract
The present application discloses a driving method and a driver chip for a display panel, and a display device, where the driving method includes steps of: acquiring a refresh rate of a first data information; performing local dimming on the first data information to generate a first backlight driving information and a first data driving information; and adjusting the first backlight driving information and the first data driving information according to the refresh rate to generate a second backlight driving information and a second data driving information, respectively.
Claims19
A driving method for a display panel, comprising steps of:
- acquiring a refresh rate of a first data information inputted from the display panel,
- performing local dimming on the first data information to generate a first backlight driving information and a first data driving information;
- and
- adjusting the first backlight driving information and the first data driving information according to the refresh rate of the first data information to correspondingly generate a second backlight driving information to a backlight driving circuit of the display panel, and further generate a second data driving information to a data driving circuit of the display panel;
- wherein the greater the refresh rate of the first data information is, the darker a backlight of the backlight driving circuit is made by the second backlight driving information, and further the greater the refresh rate of the first data information is, the greater a grayscale value of the data driving circuit is made by the second data driving information;
- the smaller the refresh rate is, the brighter the backlight of the backlight driving circuit is made by the second backlight driving information, and further the smaller the refresh rate is, the smaller the grayscale value of the data driving circuit is made by the second data driving information.
3 more elements
A driver chip for a display panel, comprising:
- a local dimming circuit configured for receiving a first data information inputted by the display panel for local dimming and outputting a first backlight driving information and a first data driving information;
- a refresh rate gain adjusting circuit configured for receiving the first data information inputted by the display panel, acquiring a refresh rate of the first data information, and adjusting the first backlight driving information according to the refresh rate to form and output a second backlight driving information, and adjusting the first data driving information according to the refresh rate to form and output a second data driving information;
- a backlight driving circuit connected to the refresh rate gain adjusting circuit and configured for receiving the second backlight driving information and driving a backlight module of the display panel to display;
- and
- a data driving circuit connected to the refresh rate gain adjusting circuit and configured for receiving the second data driving information and driving the display panel to display;
- wherein the greater the refresh rate of the first data information is, the darker a backlight of the backlight driving circuit is made by the second backlight driving information, and further the greater the refresh rate of the first data information is, the greater a grayscale value of the data driving circuit is made by the second data driving information;
- the smaller the refresh rate is, the brighter the backlight of the backlight driving circuit is made by the second backlight driving information, and further the smaller the refresh rate is, the smaller the grayscale value of the data driving circuit is made by the second data driving information.
4 more elements
A display device, comprising a display panel, a backlight module and a driver chip, wherein the driver chip drives the backlight module and the display panel for image display, and the driver chip comprises:
- a local dimming circuit configured for receiving a first data information inputted by the display panel for local dimming and outputting a first backlight driving information and a first data driving information;
- a refresh rate gain adjusting circuit configured for receiving the first data information inputted by the display panel, acquiring a refresh rate of the first data information, and adjusting the first backlight driving information according to the refresh rate to form and output a second backlight driving information, and adjusting the first data driving information according to the refresh rate to form and output a second data driving information;
- a backlight driving circuit connected to the refresh rate gain adjusting circuit and configured for receiving the second backlight driving information and driving a backlight module of the display panel to display;
- and
- a data driving circuit connected to the refresh rate gain adjusting circuit and configured for receiving the second data driving information and driving the display panel to display;
- wherein the greater the refresh rate of the first data information is, the darker a backlight of the backlight driving circuit is made by the second backlight driving information, and further the greater the refresh rate of the first data information is, the greater a grayscale value of the data driving circuit is made by the second data driving information;
- the smaller the refresh rate is, the brighter the backlight of the backlight driving circuit is made by the second backlight driving information, and further the smaller the refresh rate is, the smaller the grayscale value of the data driving circuit is made by the second data driving information.
4 more elements
Dependencies are inferred from the claim text.