Unit and method of controlling frame rate and liquid crystal display device using the same
AssigneeLG Display Co., Ltd.
InventorsSung Joon Moon, Sang Hoon Lee, Kyu Ha Oh
Life of this patent
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Abstract
A frame rate control method capable of enhancing picture-quality is disclosed. The frame rate control method generates red, green, and blue frame rate control signals by frame-rate-modulating red, green, and blue frame rate control patterns on the basis of lower-bit red, green, and blue data. The lower-bit red, green, and blue data are extracted from red, green, and blue data. The red, green and blue frame rate control patterns are obtained through a process of shifting basic frame rate control patterns by different sub-pixel numbers in one direction. The basic frame rate control patterns are established for a plurality of frames.
Claims11
A frame rate control unit comprising:
- a frame rate control pattern generator configured to generate red, green, and blue frame rate control patterns from basic frame rate control patterns which are established for a plurality of continuous frames;
- a data bit extractor configured to extract higher-bit red, green, and blue data and lower-bit red, green, and blue data from each of red, green, and blue data;
- and
- a frame rate modulator configured to generate red, green, and blue frame rate control signals by frame-rate-modulating the red, green, and blue frame rate control patterns on the basis of the respective lower-bit red, green, and blue data,
- wherein the green and blue frame rate control patterns are obtained through a process of shifting the basic frame rate control patterns by different sub-pixel numbers in one direction.
A frame rate control method comprising:
- deriving red, green, and blue frame rate control patterns from basic frame rate control patterns which are established for a plurality of continuous frames;
- extracting higher-bit red, green, and blue data and lower-bit red, green, and blue data from each of red, green, and blue data;
- and
- generating red, green, and blue frame rate control signals by frame-rate-modulating the red, green, and blue frame rate control patterns on the basis of the respective lower-bit red, green, and blue data,
- wherein the green and blue frame rate control patterns are obtained through a process of shifting the basic frame rate control patterns by different sub-pixel numbers in one direction.
A liquid crystal display device comprising:
- a liquid crystal panel on which pixels configured to include red, green, and blue sub-pixels are arranged in a matrix;
- a timing controller configured to generate gate and data control signals and a horizontal 2-dot control signal used for inverting the liquid crystal panel in a horizontal 2-dot inversion system, and providing red, green, and blue frame rate control signals by generating red, green, and blue frame rate control patterns from basic frame rate control patterns which are established for a plurality of continuous frames, extracting higher-bit red, green, and blue data and lower-bit red, green, and blue data from each of red, green, and blue data, and frame-rate-modulating the red, green, and blue frame rate control patterns on the basis of the respective lower-bit red, green, and blue data;
- a gate driver configured to respond to the gate control signal and drive the liquid crystal panel;
- and
- a data driver configured to convert the higher-bit red, green, and blue data into analog red, green, and blue data voltages and drive the liquid crystal panel using the converted red, green, and blue data voltage according to the red, green, and blue frame rate control signals during the plurality of frames,
- wherein the green and blue frame rate control patterns are obtained through a process of shifting the basic frame rate control patterns by different sub-pixel numbers in one direction.
Dependencies are inferred from the claim text.