Liquid crystal display and driving method thereof
A liquid crystal display having adaptive driving mechanism includes plural pixel array areas and a driving module. Each pixel array area has a plurality of pixels. The driving module includes a signal generation unit for generating grey-level signals corresponding to the pixels based on input image data, a weighting conversion unit for converting the grey-level signals corresponding to the pixels into a plurality of weightings, a weighting processing unit for generating a weighting sum by summing up the weightings corresponding to the pixel array area, an inversion-mode setting unit for setting a polarity inversion mode according to the weighting sum, and a data signal output unit. The data signal output unit is utilized for providing a plurality of data signals to be written into the pixel array area based on the polarity inversion mode.
1. A liquid crystal display, comprising:
a plurality of pixel array areas, each pixel array area including plural pixels;
a signal generation unit for generating grey-level signals corresponding to the pixels based on input image data;
a weighting conversion unit for converting the grey-level signals corresponding to the pixels into a plurality of weightings;
a weighting processing unit for generating a weighting sum by summing up the weightings corresponding to the pixel array area;
an inversion-mode setting unit for outputting a selection signal according to the weighting sum;
a polarity control unit for providing a plurality of polarity control signals;
a multiplexer for selecting one polarity control signal corresponding to a weighting range into which the weighting sum falls according to the selection signal; and
a data signal output unit for providing a plurality of data signals to be written into the pixel array area based on a polarity inversion mode under control of the selected polarity control signal.
2. The liquid crystal display of claim 1 , wherein the polarity inversion mode is a column inversion mode.
3. The liquid crystal display of claim 1 , wherein the polarity inversion mode is a dot inversion mode or a plural-dot inversion mode.
4. The liquid crystal display of claim 3 , wherein the plural-dot inversion mode is a two-dot inversion mode, a four-dot inversion mode, or an eight-dot inversion mode.
5. The liquid crystal display of claim 1 , wherein the weighting conversion unit is utilized for converting the grey-level signals corresponding to the pixels into the weightings according to a predetermined grey-level/weighting mapping relationship.
6. The liquid crystal display of claim 5 , wherein the grey-level/weighting mapping relationship is created based on inversion flickering seriousness corresponding to each grey level.
7. The liquid crystal display of claim 5 , wherein the weighting conversion unit is utilized for mapping a lowermost grey level to a first low weighting, mapping an uppermost grey level to a second low weighting, and mapping a first middle grey level to a highest weighting based on the grey-level/weighting mapping relationship.
8. The liquid crystal display of claim 7 , wherein the second low weighting is identical to or different from the first low weighting.
9. The liquid crystal display of claim 7 , wherein the weighting conversion unit is further utilized for mapping a second middle grey level between the lowermost grey level and the first middle grey level to a weighting between the first low weighting and the highest weighting, and mapping a third middle grey level between the uppermost grey level and the first middle grey level to a weighting between the second low weighting and the highest weighting based on the grey-level/weighting mapping relationship.