Liquid crystal display driver and method thereof
First Claim
Patent Images
1. A system comprising:
- a display element having an original luminance value in a frame periodcorresponding to an input data between a minimum gray scale and a maximum gray scale;
an adjusted gray scale generator for receiving the input data and outputting a plurality of adjusted gray scale signals including a first adjusted gray scale signal and a second adjusted gray scale signal; and
a driving unit for driving the display element according to the first adjusted gray scale signal in a first subframe period and driving the display element according to the second adjusted gray scale signal in a second subframe period to result in an adjusted luminance value of the display element, wherein the first subframe period and the second subframe period are within the frame period and the second subframe period follows the first subframe period;
wherein when the input data is between a first gray scale and a second gray scale, wherein the first gray scale and the second gray scale are predetermined values both higher than the minimum gray scale and lower than the maximum gray scale, the first adjusted gray scale signal is higher than the second adjusted gray scale signal and the first adjusted gray scale signal is substantially equal to a third gray scale and is lower than the maximum gray scale, wherein the third gray scale is lower than the second gray scale, andwherein when the input data is between the second gray scale and the maximum gray scale value, the first adjusted gray scale signal is equal to the second adjusted gray scale signal.
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Abstract
A system comprises a liquid crystal display viewable from front and side view points, and comprising a plurality of pixels having corresponding original luminance values, a plurality of data lines in the display, a plurality of data drivers for driving the data lines, and an adjusted gray scale generator for adjusting gray scales of the pixels and outputting adjusted gray scales to the data drivers for driving the data lines.
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Citations
17 Claims
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1. A system comprising:
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a display element having an original luminance value in a frame period corresponding to an input data between a minimum gray scale and a maximum gray scale; an adjusted gray scale generator for receiving the input data and outputting a plurality of adjusted gray scale signals including a first adjusted gray scale signal and a second adjusted gray scale signal; and a driving unit for driving the display element according to the first adjusted gray scale signal in a first subframe period and driving the display element according to the second adjusted gray scale signal in a second subframe period to result in an adjusted luminance value of the display element, wherein the first subframe period and the second subframe period are within the frame period and the second subframe period follows the first subframe period; wherein when the input data is between a first gray scale and a second gray scale, wherein the first gray scale and the second gray scale are predetermined values both higher than the minimum gray scale and lower than the maximum gray scale, the first adjusted gray scale signal is higher than the second adjusted gray scale signal and the first adjusted gray scale signal is substantially equal to a third gray scale and is lower than the maximum gray scale, wherein the third gray scale is lower than the second gray scale, and wherein when the input data is between the second gray scale and the maximum gray scale value, the first adjusted gray scale signal is equal to the second adjusted gray scale signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for driving a display comprising:
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obtaining an original luminance value in a frame period corresponding to an input data between a minimum gray scale and a maximum gray scale; receiving the input data and outputting a plurality of adjusted gray scale signals including a first adjusted gray scale signal and a second adjusted gray scale signal; and driving a display element according to the first adjusted gray scale signal in a first subframe period and driving the display element according to the second adjusted gray scale signal in a second subframe period to result in an adjusted luminance value of the display element, wherein the first subframe period and the second subframe period are within the frame period and the second subframe period follows the first subframe period; wherein when the input data is between a first gray scale and a second gray scale, wherein the first gray scale and the second gray scale are predetermined values both higher than the minimum gray scale and lower than the maximum gray scale, the first adjusted gray scale signal is higher than the second adjusted gray scale signal and the first adjusted gray scale signal is substantially equal to a third gray scale and is lower than the maximum gray scale, wherein the third gray scale is lower than the second gray scale, and wherein when the input data is between the second gray scale and the maximum gray scale value, the first adjusted gray scale signal is equal to the second adjusted gray scale signal. - View Dependent Claims (10, 11, 12, 13)
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14. A display device comprising:
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a plurality of first pixels; a plurality of second pixels; a circuit for receiving an original signal corresponding to a first intensity value between a minimum gray scale and a maximum gray scale for a first pixel at a first frequency in a frame period consisting of a plurality of subframe periods; a converter for converting the original signal into two adjusted signals, including a first adjusted gray scale signal and a second adjusted gray scale signal, corresponding to a second intensity value and a third intensity value, respectively, at a second frequency wherein the second frequency is larger than the first frequency, wherein the first intensity value is between the second and the third intensity values; and a memory for storing and outputting the two adjusted signals to the first pixel; wherein each of the first pixels and the second pixels has a pair of first color sub-pixels, a pair of second color sub-pixels, and a pair of third color sub-pixels, and the first pixels and the second pixels are interlaced in an alternating fashion horizontally and vertically to compose the display device; wherein the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels in each of the first pixels are arranged in a first shape, the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels in each of the second pixels are arranged in a second shape, wherein the first shape and the second shape are symmetrical to each other; wherein each pair of the first color sub-pixels are arranged along a first diagonal line, and each pair of the second color sub-pixels are arranged along a second diagonal line, wherein the first diagonal line is substantially perpendicular to the second diagonal line, wherein one of the first color sub-pixels in each first pixel is directly adjacent to one of the first color sub-pixels in one of the second pixels adjacent to the first pixel, and one of the second color sub-pixels in the first pixel is directly adjacent to one of the second color sub-pixels in the other one of the second pixels adjacent to the first pixel, and wherein when the original signal is between a first gray scale and a second gray scale, wherein the first gray scale and the second gray scale are predetermined values both higher than the minimum gray scale and lower than the maximum gray scale, the first adjusted gray scale signal is higher than the second adjusted gray scale signal and the first adjusted gray scale signal is substantially equal to a third gray scale and is lower than the maximum gray scale, wherein the third gray scale is lower than the second gray scale, and wherein when the input data is between the second gray scale and the maximum gray scale value, the first adjusted gray scale signal is equal to the second adjusted gray scale signal. - View Dependent Claims (15)
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16. A display device comprising:
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a plurality of first pixels; a plurality of second pixels; a circuit for receiving an original signal corresponding to a first intensity value between a minimum gray scale and a maximum gray scale for a first pixel at a first frequency in a frame period consisting of a plurality of subframe periods; a converter for converting the original signal into two adjusted signals, including a first adjusted gray scale signal and a second adjusted gray scale signal, corresponding to a second intensity value and a third intensity value, respectively, at a second frequency wherein the second frequency is larger than the first frequency, wherein the first intensity value is between the second and the third intensity values; and a memory for storing and outputting the two adjusted signals to the first pixel, wherein each of the first pixels and the second pixels has a pair of first color sub-pixels, a pair of second color sub-pixels, and a pair of third color sub-pixels, and the first pixels and the second pixels are interlaced in an alternating fashion horizontally and vertically to compose the display device, wherein the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels in each of the first pixels are arranged in a first shape, the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels in each of the second pixels are arranged in a second shape, wherein the first shape and the second shape are symmetrical to each other, wherein each pair of the first color sub-pixels are arranged along a first diagonal line, and each pair of the second color sub-pixels are arranged along a second diagonal line, wherein the first diagonal line is substantially perpendicular to the second diagonal line, wherein when the original signal is between a first gray scale and a second gray scale, wherein the first gray scale and the second gray scale are predetermined values both higher than the minimum gray scale and lower than the maximum gray scale, the first adjusted gray scale signal is higher than the second adjusted gray scale signal and the first adjusted gray scale signal is substantially equal to a third gray scale and is lower than the maximum gray scale, wherein the third gray scale is lower than the second gray scale, and wherein when the input data is between the second gray scale and the maximum gray scale value, the first adjusted gray scale signal is equal to the second adjusted gray scale signal. - View Dependent Claims (17)
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Specification