Liquid crystal display and a driving method thereof
First Claim
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1. A liquid crystal display comprising:
- a liquid crystal display panel comprising a plurality of scan lines for transferring scan signals, a plurality of data lines insulated and crossed with the scan lines, and a plurality of pixels at areas surrounded by the scan lines and data lines, the pixels including switches coupled to the scan lines and data lines and being arranged in a matrix format;
a gate driver for sequentially supplying scan signals to the scan lines;
a gray waveform generator for generating gray waveforms corresponding to gray data;
a data driver for supplying the gray waveforms outputted from the gray waveform generator and for supplying reset pulses to corresponding data lines of the plurality of data lines, the reset pulses for resetting at least one liquid crystal state to a desired state; and
a light source for sequentially outputting red, green, and blue light on at least one of the plurality of pixels,wherein the light source is outputted on the liquid crystal display during at least some part of each period when the data driver supplies at least one of the reset pulses to the corresponding data lines, andwherein the gray waveform generator comprises;
a pattern table for storing gray waveform patterns corresponding to the gray data;
a constant voltage generator for generating a first voltage and a second voltage;
at least one of the switches coupled to the scan lines and data lines for selecting a voltage between the first voltage and the second voltage; and
a voltage applying time controller for extracting at least one of the gray waveform patterns corresponding to input gray data from the pattern table, and controlling operation of the at least one of the switches based on the extracted gray waveform pattern.
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Abstract
A method for driving a liquid crystal display is provided. The display includes a liquid crystal formed between a first substrate and a second substrate, a first electrode arranged at the first substrate, a second electrode arranged at the second substrate, and red, green, and blue lights sequentially transmitting on one pixel of the display. The driving method includes applying a gray voltage based on gray data between the first electrode and the second electrode during a first part in a first period and applying a reset voltage to reset a liquid crystal between the first electrode and the second electrode to a desired state during a second part in the first period.
16 Citations
4 Claims
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1. A liquid crystal display comprising:
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a liquid crystal display panel comprising a plurality of scan lines for transferring scan signals, a plurality of data lines insulated and crossed with the scan lines, and a plurality of pixels at areas surrounded by the scan lines and data lines, the pixels including switches coupled to the scan lines and data lines and being arranged in a matrix format; a gate driver for sequentially supplying scan signals to the scan lines; a gray waveform generator for generating gray waveforms corresponding to gray data; a data driver for supplying the gray waveforms outputted from the gray waveform generator and for supplying reset pulses to corresponding data lines of the plurality of data lines, the reset pulses for resetting at least one liquid crystal state to a desired state; and a light source for sequentially outputting red, green, and blue light on at least one of the plurality of pixels, wherein the light source is outputted on the liquid crystal display during at least some part of each period when the data driver supplies at least one of the reset pulses to the corresponding data lines, and wherein the gray waveform generator comprises; a pattern table for storing gray waveform patterns corresponding to the gray data; a constant voltage generator for generating a first voltage and a second voltage; at least one of the switches coupled to the scan lines and data lines for selecting a voltage between the first voltage and the second voltage; and a voltage applying time controller for extracting at least one of the gray waveform patterns corresponding to input gray data from the pattern table, and controlling operation of the at least one of the switches based on the extracted gray waveform pattern. - View Dependent Claims (2, 3, 4)
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Specification
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Current AssigneeSamsung Display Company Limited (Samsung Electronics Co. Ltd.)
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Original AssigneeSamsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
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InventorsPark, Jun-Ho
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Primary Examiner(s)Hjerpe; Richard
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Assistant Examiner(s)Shapiro; Leonid
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Application NumberUS10/938,083Publication NumberTime in Patent Office1,859 DaysField of Search345/88, 345/55, 345/203, 345/690, 345/89US Class Current345/89CPC Class CodesG09G 2310/0235 Field-sequential colour dis...G09G 2310/024 Scrolling of light from the...G09G 2310/061 for resetting or blankingG09G 2310/08 Details of timing specific ...G09G 2320/0242 Compensation of deficiencie...G09G 2320/0646 Modulation of illumination ...G09G 3/3413 Details of control of colou...G09G 3/3648 using an active matrix G09G...
