Patent ID: 7952657

Claim:
A liquid crystal display (LCD), comprising: a backlight module comprising at least one white point source, emitting a spectrum of light comprising at least three peaks; a liquid crystal display panel, disposed over the backlight module and comprising a color filter substrate, an opposite substrate and a liquid crystal layer, wherein the liquid crystal layer is disposed between the color filter substrate and the opposite substrate; the color filter substrate consists of a blue filter, a green filter and a red filter; and the color filter substrate and the backlight module satisfy the following formulas: ∑ 555 605 ⁢ ⁢ BL ⁡ ( λ ) × CF Red ⁡ ( λ ) × Δ ⁢ ⁢ λ ≤ 6.0 ∑ 580 630 ⁢ ⁢ BL ⁡ ( λ ) × CF Green ⁡ ( λ ) × Δ ⁢ ⁢ λ ≤ 3.5 ∑ 505 580 ⁢ ⁢ BL ⁡ ( λ ) × CF Blue ⁡ ( λ ) × Δ ⁢ ⁢ λ ≤ 3.5 ∑ 605 680 ⁢ ⁢ BL ⁡ ( λ ) × CF Red ⁡ ( λ ) × Δ ⁢ ⁢ λ ≥ 11.0 ∑ 500 560 ⁢ ⁢ BL ⁡ ( λ ) × CF Green ⁡ ( λ ) × Δ ⁢ ⁢ λ ≥ 12.6 wherein the backlight module has the maximum luminance in one wavelength, with the maximum luminance being set at 1.0; BL(λ) represents the normalized luminance spectrum at each wavelength; CF Blue (λ) represents the transmittance of light at each wavelength passing through the blue filter; CF Green (λ) represents the transmittance of light at each wavelength passing through the green filter; CF Red (λ) represents the transmittance of light at each wavelength passing through the red filter; and Δλ represents the wavelength interval.