Display driving circuit, display driving method and display device
A display driver and display device technology, applied to static indicators, instruments, etc., can solve problems such as bad flickering screen and inability to effectively release residual charge of pixel electrodes, so as to prevent bad flickering of the screen and improve the effect of flickering screen
Inactive Publication Date: 2019-06-04
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a display driving circuit, a display driving method and a display device, so as to solve the problem that the display device in the prior art cannot effectively release the residual charge in the pixel electrode when the display device is abnormally powered off, resulting in poor flickering when the screen is clicked again The problem
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specific Embodiment approach
[0069] According to a specific implementation manner, the power supply voltage input terminal includes a 3.3V DC voltage input terminal, a 1.8V DC voltage input terminal, a positive liquid crystal driving voltage input terminal, and a negative liquid crystal driving voltage input terminal;
[0070] The predetermined range of voltage values includes a first predetermined range of voltage values, a second predetermined range of voltage values, a third predetermined range of voltage values and a fourth predetermined range of voltage values;
[0071] The abnormal power-down monitoring unit is specifically configured to output the first abnormal power-down indication when it is judged that the voltage value of the 3.3V DC voltage signal input by the 3.3V DC voltage input terminal is not within the first predetermined voltage value range signal, when it is judged that the voltage value of the 1.8V DC voltage signal input by the 1.8V DC voltage input terminal is not within the sec...
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The invention provides a display drive circuit, a display drive method and a display device. The display drive circuit includes an abnormal power-off monitoring unit and a drive control unit; a power supply circuit controls a first level output end to continuously output a first level in a discharge time period after receiving an abnormal power-off control signal; a timing control circuit controls, after receiving the abnormal power-off control signal, a clock signal output end to output a first level according to the first level output by the first level output end in the discharge time period so that a gate drive circuit controls the on of multiple rows of gate lines at the same time; and a data drive circuit controls the output of a predetermined discharge level to a plurality of data lines after receiving the abnormal power-off control signal. According to the invention, the residual charge in a pixel electrode can be discharged to the data lines at the time of abnormal power-off to remove the residual charge.
Description
technical field [0001] The present invention relates to the technical field of display driving, in particular to a display driving circuit, a display driving method and a display device. Background technique [0002] With the rapid development of the liquid crystal display industry, people's requirements for mobile electronic products are getting higher and higher. Thinning, high resolution, and stable performance have gradually become the basic needs of consumers, making the highly integrated One-chip (one-chip ) IC (Integrated Circuit, integrated circuit) and GOA (Gate On Array, gate drive circuit disposed on the array substrate) design came into being. [0003] The new One-Chip IC integrates the data drive circuit, timing control circuit and Power IC (power supply circuit) on the source drive chip, which reduces the space and reduces the overall cost, but the process complexity and design requirements are increased. When dealing with some abnormal and special situations,...
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IPC IPC(8): G09G3/36
CPCG09G3/3648G09G2320/02G09G2330/02
Inventor 丁鹏
Owner BOE TECH GRP CO LTD