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US 8,552,951 B2Granted
Driving method for liquid crystal panel and LCD
AssigneeChimei Innolux Corporation
InventorsYao-Ching Chiang, Yu-Yeh Chen
Life of this patent
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Abstract
In a driving method for a liquid crystal panel, overdriving pixel data is obtained either independently of the FRC pixel data or depending on a difference between the FRC pixel data and previous FRC pixel data.
Claims17
A driving method of driving a liquid crystal panel, the method comprising:
- converting M-bit pixel data into N-bit FRC pixel data according to a frame rate control (FRC) conversion procedure, where M and N are positive integers, and M is larger than N;
- independently of the N-bit FRC pixel data, generating a pixel data offset from the M-bit pixel data received via a different path from a path of the N-bit FRC pixel data;
- determining overdriving pixel data according to (i) the pixel data offset and (ii) the N-bit FRC pixel data;
- and
- outputting the overdriving pixel data to drive the liquid crystal panel.
2 more elements
A control circuit for a liquid crystal display (LCD), the control circuit comprising:
- a frame rate control (FRC) unit for converting M-bit pixel data into N-bit FRC pixel data according to a conversion procedure of frame rate control, where M and N are positive integers, and M is larger than N;
- an overdriving unit for outputting, independently of the N-bit FRC pixel data, a pixel data offset from the M-bit pixel data inputted into the overdriving unit via a different path from a path of the N-bit FRC pixel data;
- a processing unit for obtaining overdriving pixel data according to inputs of (i) the pixel data offset and (ii) the N-bit FRC pixel data into the processing unit;
- and
- a data driving unit for driving the liquid crystal panel according to the overdriving pixel data.
2 more elements
Dependencies are inferred from the claim text.