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Active Matrix Type Liquid Crystal Display Apparatus
Patent

Active Matrix Type Liquid Crystal Display Apparatus

Hitachi, Ltd., 大江昌人, Ashizawa, Keiichiro, Kondo, Katsumi, Yanagawa, Kazuhiko, Hiyama, Ikuo, Itoh, Osamu and Utsumi, Yuka
12/02/2009

Abstract

A liquid crystal display apparatus includes a liquid crystal panel having polarizers, and a back light having a light source for illumination of the liquid crystal panel which has a characteristic of spectral transmittance required to satisfy the following equation, x>y>z, when a medium tone display voltage varies in a range between a minimum and maximum voltage for a Blue pixel, where “x” is a value of the transmittance in the panel at a wavelength corresponding to a longest wavelength in a range of wavelengths designated for blue light, “y” is a value of the transmittance in the panel at a wavelength corresponding to a maximum value of the intensity in a range of wavelengths designated for green light, and “z” is a value of the transmittance in the panel at a wavelength corresponding to a maximum value of the intensity in a range of wavelengths designated for red light.

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