Liquid crystal panel and liquid crystal display apparatus

摘要

A liquid crystal panel (2) is a vertical alignment type liquid crystal panel using a horizontal electric field driving system which performs display by driving a liquid crystal layer (50) interposed between substrates (10, 20) in a horizontal electric field, each pixel includes three sub-pixels (6R, 6G, and 6B), which are of red, green, and blue, comb-shaped electrodes (14, 15) include a function as a diffraction grating with the comb-shaped electrodes (14, 15) and spaces between the comb-shaped electrodes (14, 15), and pitch distances (D) between electrodes are set such that an optical diffraction efficiency for red wavelength and an optical diffraction efficiency for green wavelength are greater than an optical diffraction efficiency for blue wavelength. Thus, it is possible to provide a liquid crystal panel and a liquid crystal display apparatus having a wide viewing angle with less color change with a simple configuration.

主权项

1. A liquid crystal panel comprising:
a first substrate on which first electrodes and second electrodes are provided with pitch distances between the first electrodes and the second electrodes, respectively; a second substrate provided to face the first substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein the horizontal electric field driving system is used in which the liquid crystal layer is driven with horizontal electric fields generated between the first electrodes and the second electrodes, and liquid crystal molecules in the liquid crystal layer are aligned vertically to the first substrate and the second substrate when no electric field is applied on the liquid crystal molecules, each pixel includes three sub-pixels, which are of red, green, and blue, the first electrodes and the second electrodes function as a diffraction grating constituted by the first electrodes, the second electrodes, and the pitch distances therebetween, the pitch distances between the first electrodes and the second electrodes are set such that an optical diffraction efficiency for red wavelength and an optical diffraction efficiency for green wavelength are greater than an optical diffraction efficiency for blue wavelength. in a case where a plurality of types are set for the pitch distances in one pixel, 6 μm ≦D1 ≦10 μm is satisfied when D1 is at least one of the plurality of types of pitch distances, and 6 μm ≦Dm ≦10 μm is satisfied when Dm is an average of all of the pitch distances occupying the pixel, and a display mode of the liquid crystal panel is a transmission mode in which display is performed by controlling light intensity of light transmitted through the liquid crystal panel.