Liquid crystal panel and liquid crystal display apparatus

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, and
• 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.