Crosstalk elimination circuit, liquid crystal display apparatus, and display control method

Abstract

The crosstalk of a display apparatus can be efficiently eliminated to realize a precise, high-quality display. A liquid crystal display apparatus includes, as a crosstalk elimination circuit, an adjacent picture element acquisition circuit ( 1 ) that acquires display signals of picture elements adjacent to a self picture element, and two-dimensional LUTs ( 2 ) that use the display signals of the adjacent picture elements, acquired by the adjacent picture element acquisition circuit ( 1 ), to correct display signals of the self picture element so as to correct RGB display signals. The Picture element display signals as corrected by the correction values output from the LUTs ( 2 ) are output to a source driver ( 4 ) via a timing controlling unit (TC) ( 3 ). In the crosstalk elimination circuit, the display signals of a picture element to be corrected and those of picture elements adjacent tot the picture element that influence the picture element are used to acquire a correction value, thereby correcting the display signals of the correction target picture element.

Description

technical field [0001] The present invention relates to a crosstalk canceling circuit, a liquid crystal display device, and a display control method. Specifically, the present invention relates to a crosstalk canceling circuit for eliminating crosstalk in a liquid crystal display device for high-quality image display, a liquid crystal display device having the crosstalk canceling circuit, and a display control method. A display control method for eliminating crosstalk and performing high-quality image display. Background technique [0002] As displays for computers and television receivers, liquid crystal displays have been popularized. Most liquid crystal displays use active matrix liquid crystal display panels in which thin film transistors (TFT (Thin Film Transistor)) are used as address elements. [0003] Among such TFT-based active matrix liquid crystal panels, liquid crystal panels using ultra-high aperture ratio technology (that is, SHA (Super High Aperture Ratio) te...

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Problems solved by technology

[0019] The invention of Patent Document 2 focuses on the prevention of crosstalk caused by display signals input to two adjacent electrodes adjacent to the source line in the direction perpendicular to the pixel electrode, but there is a problem that the direction perpendicular to the source line cannot be eliminated. The problem of crosstalk generated in directions other than

[0020] For example, in the case of the invention of Patent Document 2, there is a problem that the display signal input to the other pixel electrode cannot be corrected in the next frame period after the display signal is input to the pixel electrode of interest. The effect of crosstalk on the resulting time axis

[0021] In the case of the invention of Patent Document 2, there is also a problem that the pixel electrode of interest cannot correct the influence of electrical crosstalk generated by display signals input to other pixel electrodes connected to the source line electrode in the horizontal direction.

[0022] Therefore, the invention of Patent Document 2 also has the problem that optical crosstalk cannot be corrected.

[0023] Furthermore, in the invention of Patent Document 2, there is a problem that only when the relationship between the crosstalk correction coefficient H and the crosstalk correction coefficient K satisfies H=K / (1-3K) and the same color pixel signal levels of adjacent pixels are the same (SR When [n]=SR[n+1], SB[n]=SB[n-1]), crosstalk can be corrected; when the difference between the pixel belonging to the pixel of interest and the adjacent pixel is large, a correction error occurs (obeying the difference value error)

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