LCD drive method and device
A driving method and over-driving technology, applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., can solve the problems of poor picture quality, exceeding the target gray-scale brightness, and the N value cannot be large, etc.
Inactive Publication Date: 2012-05-30
INNOLUX CORP
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Problems solved by technology
[0005] However, in order to reduce hardware costs, the value of N in the conventional method must not be large, because it often occurs that the required target grayscale luminance (target grayscale luminance) or exceeds the target grayscale luminance within a certain time.
If the target grayscale brightness cannot be achieved, in other words, the response time of the liquid crystal is not improved much; but if the color shift (Color Shift) is caused in order to achieve the required liquid crystal response time and white balance effect, the picture quality will be reduced. bad
Therefore, the overdrive (OD) effect that the overdrive (OD) method in the prior art intends to achieve will become quite limited.
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[0047] In order to describe the liquid crystal driving method and device of the present invention, the following detailed examples are used to illustrate, but the scope of rights of the present invention is not limited to the following examples.
[0048] see figure 2 , which is a schematic diagram of an overdrive grayscale value curve (ODCurve) of a conventional liquid crystal panel. Such as figure 2 As shown, different initial grayscale values and different target grayscale values correspond to different overdrive grayscale values (OD values), so the output such as figure 2 The overdrive grayscale value curve (OD Curve) shown. according to figure 2 The shown overdrive grayscale value curve (OD Curve) shows that all overdrive grayscale value curves can be divided into the characteristics of segmental quadratic curves. Using the characteristics of segmental quadratic curves of this overdrive grayscale value curve, the application design The liquid crystal driving ...
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The invention provides a liquid drive method and a liquid drive device. The drive method is used for driving the pixel of a monitor and comprises the following steps that a compensation gray-scale value is used to drive the pixel to cause the pixel to change from an initial gray-scale value to a target gray-scale value within the frame time, and the compensation gray-scale value is a compensationgray-scale curve determined according to the initial gray-scale value and the target gray-scale value, wherein the compensation gray-scale curve is simulated by polynominal curves and utilized to determine the compensation gray-scale value.
Description
technical field [0001] The present invention relates to a liquid crystal driving method and device, in particular to a liquid crystal driving method and device, which utilizes the segmental linear characteristic of the overdrive gray scale value curve to achieve the effect of liquid crystal overdrive. Background technique [0002] In the prior art, liquid crystal has the disadvantage of being unable to cope with fast-changing dynamic images because the transmittance changes according to its response effect. In order to solve this problem, in the prior art, a method of improving the response speed of the liquid crystal is adopted by applying an overdrive method with a driving voltage higher than that of a general liquid crystal. Generally, it is used to obtain a higher over-drive voltage according to the input liquid crystal drive voltage, using an over-drive look-up table (Over-drive Look-Up Table). The over-drive look-up table can be a memory, for example. [0003] see fi...
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IPC IPC(8): G09G3/36G09G5/06G09G3/20G02F1/133
Inventor 陈宥烨彭国轩李茂南
Owner INNOLUX CORP