Liquid crystal display driving method and drive device
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorDekang ZENG
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Abstract
A liquid crystal display driving method provided includes the following steps: acquiring a current gray level value of a current frame image; determining a gray level of the current gray level value; if the current gray level value is the high gray level, then determining whether to perform an overvoltage driving according to a first gray level difference threshold value; if the current gray level value is the low gray level, then determining whether to perform the overvoltage driving according to a second gray level difference threshold value. The present invention can precisely determine whether to perform the overvoltage driving on the pixel electrode.
Claims18
A liquid crystal display driving method, comprising the following steps:
- acquiring a gray level value of a current frame image of a pixel electrode of a liquid crystal display when the liquid crystal display is activated;
- determining a gray level of the current gray level value, the gray level including a high gray level and a low gray level;
- if the current gray level value is the high gray level, then determining whether to perform an overvoltage driving on the pixel electrode according to a first gray level difference threshold value which is predetermined;
- if the current gray level value is the low gray level, then determining whether to perform the overvoltage driving on the pixel electrode according to a second gray level difference threshold value which is predetermined, and the first gray level difference threshold value being less than the second gray level difference threshold value;
- wherein determining whether to perform the overvoltage driving on the pixel electrode according to the first gray level difference threshold value which is predetermined comprises:
- acquiring a first gray level difference value of the current frame image and a previous frame image;
- determining whether the first gray level difference value is larger than the first gray level difference threshold value;
- if the first gray level difference value is larger than the first gray level difference threshold value, then activating the overvoltage driving;
- wherein determining whether to perform the overvoltage driving on the pixel electrode according to the second gray level difference threshold value which is predetermined comprises:
- acquiring a second gray level difference value of the current frame image and the previous frame image;
- determining whether the second gray level difference value is larger than the second gray level difference threshold value;
- if the second gray level difference value is larger than the second gray level difference threshold value, then activating the overvoltage driving.
A liquid crystal display driving method, comprising the following steps:
- acquiring a current gray level value of a current frame image of a pixel electrode frame image of a liquid crystal display when the liquid crystal display is activated;
- determining a gray level of the current gray level value, the gray level including a high gray level and a low gray level;
- if the current gray level value is the high gray level, then determining whether to perform an overvoltage driving on the pixel electrode according to a first gray level difference threshold value which is predetermined;
- and
- if the current gray level value being the low gray level, then determining whether to perform the overvoltage driving on the pixel electrode according to a second gray level difference threshold value which is predetermined, and the first gray level difference threshold value being less than the second gray level difference threshold value.
A liquid crystal display driving device, comprising:
- a gray level value acquiring module acquiring a gray level value of a current frame image of a pixel electrode of a liquid crystal display when the liquid crystal display is activated;
- a gray level determining module determining a gray level of the current gray level value, the gray level including a high gray level and a low gray level;
- a first driving module determining whether to perform an overvoltage driving on the pixel electrode according to a first gray level difference threshold value which is predetermined if the current gray level value is the high gray level;
- a second driving module determining whether to perform the overvoltage driving to the pixel electrode according to a second gray level difference threshold value which is predetermined if the current gray level value is the low gray level, and the first gray level difference threshold value being less than the second gray level difference threshold value.
Dependencies are inferred from the claim text.