Patent ID: 8446548

Claim:
A display panel comprising: a light source for emitting white light in a plane; a transparent/scattering state switching element which includes a liquid crystal layer, the liquid crystal layer including liquid crystal molecules and a blue dichroic dye of which orientation states are changed by voltage application, and the transparent/scattering state switching element being capable of switching between a transparent state for transmitting the white light emitted from the light source and a scattering state for scattering the white light by changing the orientation state of the liquid crystal molecules; and a transmissive liquid crystal display panel that transmits light emitted from the transparent/scattering state switching element to thereby add an image to the light, wherein a wide-angle display and a narrow-angle display are switched upon switching between the transparent state and the scattering state of the transparent/scattering state switching element, wherein the liquid crystal molecules have a characteristic of scattering more light in a blue wavelength band than light in other wavelength bands out of incident white light from the light source in the scattering state, and wherein the blue dichroic dye whose light absorption in the blue wavelength band is weaker than light absorption in the other wavelength bands is included in such an amount so as to compensate for the light in a blue wavelength band that has been more scattered by the liquid crystal molecules and to correct a color of the light emitted by the transparent/scattering state switching element into white color, same as incident light, when the transparent/scattering state switching element switches from the transparent state to the scattering state, thereby preventing a change in the color of the light emitted by the transparent/scattering state switching element at the time of switching between the transparent state and the scattering state.