Liquid crystal driving device
AssigneeSharp Kabushiki Kaisha
InventorMasahiko Monomohshi
Life of this patent
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Abstract
A liquid crystal driving device in accordance with the present invention includes an offset information storing register for storing digital compensation data, an amplitude information storing register, and a variable resistor for adjusting the maximum gradation display voltage and minimum gradation display voltage in order to cause an absolute value of the difference between a voltage applied to a pixel electrode and a voltage applied to a common electrode to be consistent in all frames. With this, the number of components of the liquid crystal driving device can be restrained and the offset adjustment can be easily carried out with low costs.
Claims14
A liquid crystal driving device which drives a liquid crystal pixel between a pixel electrode and common electrode opposing the pixel electrode, by carrying out AC conversion by changing a first voltage for gradation displaying and a second voltage on a frame-by-frame basis, the first voltage changing in accordance with display data and being applied to the pixel electrode, and the second voltage being applied to the common electrode,
- the liquid crystal driving device comprising:
- storing means for storing compensation data;
- and
- adjusting means for adjusting, in accordance with the compensation data, the first voltage so as to cause an absolute value of a difference between the first voltage and the second voltage to be consistent in all frames.
A liquid crystal driving device which drives a liquid crystal pixel between a pixel electrode and common electrode opposing the pixel electrode, by carrying out AC conversion by changing a first voltage for gradation displaying and a second voltage on a frame-by-frame basis, the first voltage changing in accordance with display data and being applied to the pixel electrode, and the second voltage being applied to the common electrode,
- the liquid crystal driving device comprising:
- compensation data generating means for generating compensation data in accordance with the second voltage;
- and
- adjusting means for adjusting, in accordance with the compensation data having been generated, the first voltage so as to cause an absolute value of a difference between the first voltage and the second voltage to be consistent in all frames.
Dependencies are inferred from the claim text.