Liquid crystal display device
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Abstract
A liquid crystal display device comprising a including signal correcting means correction for correcting a level of an original image signal to a level with which transmittance in a steady state of the pixel with the original image signal is attained within one frame period, a horizontal driving means for driver applying a voltage in correspondence with the corrected image signal to a liquid crystal material, and an illumination device for illuminating the display panel with a plurality of light emitting regions thereof, said the light emitting regions sequentially turns turning on and off in synchronization with the application of the corrected image signal, while holding a definite time delay thereto.
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Citations
27 Claims
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1-20. -20. (canceled)
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21. An active matrix type liquid crystal display device for displaying moving pictures comprising:
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a display panel having pixels arranged in a matrix of rows and columns in a display area, and switching elements connected to each of the pixels;
a vertical driving circuit for scanning a display area of the display panel by selecting rows of pixels sequentially with a period of one frame;
a horizontal driving circuit for applying a voltage corresponding to an image signal to each pixel in a selected row;
signal selection means for selectively providing one of the image signal and an erasure signal to the horizontal driving circuit, said signal selection means providing the erasure signal for adjusting a potential of each pixel to a same level in an interval between successive image signals; and
an illumination device having a plurality of light emitting regions in rows for illuminating the display panel, the light emitting regions sequentially turning on and off in synchronization with a selection of rows of the light emitting regions, while maintaining a definite time delay in the selection of rows. - View Dependent Claims (22, 23)
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24. An active matrix type liquid crystal display device for displaying moving pictures comprising:
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a display panel having pixels arranged in a matrix of rows and columns in a display area, and switching elements connected to each of the pixels;
a vertical driving circuit for scanning a display area of the display panel by selecting rows of pixels sequentially with a period of one frame;
a horizontal driving circuit for applying a voltage corresponding to an image signal to each pixel in a selected row;
signal selection means for selectively providing one of the image signal and an erasure signal to the horizontal driving circuit, said signal selection means providing the erasure signal for adjusting a potential of each pixel to a same level in an interval between successive image signals;
signal correcting means for generating a corrected signal so that a level difference between original image signal and the erasure signal is enhanced in order to attain a transmittance approaching a value designated by the original image signal by applying a voltage determined by the corrected image signal to the pixels; and
an illumination device having a plurality of light emitting regions along in rows for illuminating the display panel, the light emitting regions sequentially turning on and off in synchronization with a selection of rows of the light emitting region, while maintaining a definite time delay in the selection of rows. - View Dependent Claims (25, 26, 27)
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Specification