Liquid crystal display
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Abstract
The present invention relates to a method of controlling luminance of a backlight based on a processed image data after receiving information of image data, in order to improve the visibility of moving picture. An inverter according to the present invention includes a first block generating a first luminance control signal with an analog value depending on the luminance control signal with a duty ratio depending on a synchronization signal. The luminance control signals generated by the respective blocks are synthesized luminance control signal. Accordingly, a liquid crystal display employing two backlight control methods can be provided. Thus, it is possible to remove the drag phenomenon of a screen and, at the same time, to improve the visibility for moving picture.
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Citations
14 Claims
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1-6. -6. (canceled)
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7. A liquid crystal display comprising:
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a liquid crystal panel assembly including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels electrically connected to the gate lines and the data lines; a signal controller receiving image data and a synchronization signal from an external graphics source, generating a control signal for driving the liquid crystal panel assembly, and converting format of the image data; a gate driver scanning the gate lines of the liquid crystal panel assembly by unit of horizontal scan period based on a gate voltage; a data driver selecting gray voltages corresponding to the image data from the signal controller for respective data lines on the liquid crystal panel assembly; an inverter generating a driving signal based on a base signal having a predetermined pulse duty ratio and an amplitude depending on a luminance distribution of the image data; and a lamp having on and off states and intensity controlled in response to the driving signal from the inverter. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A liquid crystal display comprising:
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a liquid crystal panel assembly including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels electrically connected to the gate lines and the data lines; a signal controller receiving image data and a synchronization signal from an external graphic source, generating a control signal for driving the liquid crystal panel assembly, and converting format of the image data; a gate driver scanning the gate lines of the liquid crystal panel assembly by unit of horizontal scan period based on a gate voltage; a data driver selecting gray voltages corresponding to the image data from the signal controller for respective data lines on the liquid crystal panel assembly; an inverter generating a driving signal based on a base signal having a predetermined pulse duty ratio and an amplitude depending on a luminance distribution of the image data; a light source having on and off states and intensity controlled in response to the driving signal from the inverter. - View Dependent Claims (14)
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Specification