Patent ID: 7903206

Claim:
A liquid crystal display device for performing reflection display and transmission display, the device comprising: a backlight source, a color filter including filters of n colors which are at least three colors, the filters of n colors including a filter of one color formed corresponding to each of a plurality of pixels, the color filter having a color reproduction range of 0.079 or more, the color reproduction range, when light of n colors after passing through the filters of n colors is shown as chromaticity coordinates (x, y) of n points on a chromaticity diagram of a CIE 1931 standard colorimetric system, under conditions of a D 65 light source and a visual field of 2°, being defined by an area of a polygon having the n points as vertexes, the color filter being used for both of the reflection display and the transmission display, the filter of one color corresponding to one pixel and having a same configuration in the entire area of the pixel, wherein the reflection display and the transmission display are performed by only light that has passed through the color filter; and wherein light used for the reflection display passes through the color filter twice in a reflection area of the display device and light used for the transmission display passes through the color filter once in a transmission area of the display device, and wherein a value calculated by dividing a color reproduction range of the liquid crystal display device in the reflection display by a color reproduction range of the liquid crystal display device in the transmission display is 0.70 to 1.30, wherein the color reproduction range of the liquid crystal display device in the transmission display, when light of n colors emitted from the liquid crystal display device is shown as chromaticity coordinates (x, y) of n points on a chromaticity diagram of a CIE 1931 standard colorimetric system under conditions of the backlight source and a light receiving angle of 2°, being defined by an area of a polygon having the n points as vertexes, and the color reproduction range of the liquid crystal display device in the reflection display, when light of n colors emitted from the liquid crystal display device is shown as chromaticity coordinates (x, y) of n points on a chromaticity diagram of a CIE 1931 standard colorimetric system under conditions of a diffusion irradiation light without the backlight source and a light receiving angle of 2°, being defined by an area of a polygon having the n points as vertexes.