Video processing circuit, video processing method, liquid crystal display apparatus, and electronic apparatus

Abstract

The invention provides a video processing circuit, a processing method thereof, a liquid crystal display apparatus and an electronics device, which inhibit declination of display quality owing to influence of a horizontal electric field. A liquid crystal panel 100 has liquid crystal elements each including liquid crystals 105 interposed between the pixel electrode 118 arranged on an element substrate 100a and the common electrode 108 arranged on an opposite substrate. A video processing circuit 30, in a normally black mode, detects a frame of dark pixels of a liquid crystal element whose application voltage is smaller than a threshold Vth1 and bright pixels whose application voltage is larger or equal to the threshold Vth2, in correspondence with the gray scale designated by the image signal Vid-in and utilizes the application voltage of the dark pixels adjacent to the section of detected boundary change of a frame prior to the current frame to replace of the application corresponding to the gray level designated by the image signal of the current frame to a voltage Vc1 more than Vth1 and less than Vth2.

Description

technical field [0001] The present invention relates to a technique for reducing defects in display of a liquid crystal panel. Background technique [0002] A liquid crystal panel is a structure in which liquid crystal is sandwiched between a pair of substrates with a certain gap between them. [0003] In detail, the liquid crystal panel is configured such that pixel electrodes are arranged in a matrix for each pixel on one substrate, and common electrodes are common to pixels on the other substrate, and liquid crystal is sandwiched between the pixel electrodes and the common electrodes. When a voltage corresponding to the gray scale is applied and maintained between the pixel electrode and the common electrode, the alignment state of the liquid crystal is defined for each pixel, and thus the transmittance or reflectance is controlled. Therefore, in the above configuration, it can be said that among the electric fields acting on the liquid crystal molecules, only the direct...

AI Technical Summary

Problems solved by technology

[0008] However, in the technology of reducing the reverse tilt domain by the structure of the liquid crystal panel, there is a disadvantage that the aperture ratio tends to decrease, and it cannot be applied to the already-made liquid crystal panel without improving the structure.

On the other hand, in the technique of removing image signals above the set value, there is a disadvantage that the brightness of the displayed image is limited by the set value.

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