| 摘要 |
A large number of display components are arranged and fixed, for example, in a matrix configuration on a first principal surface of a large optical guide plate to construct a main display device body. A substance having a light-transmitting property adjusted for its refractive index is allowed to intervene at least between the large optical guide plate and the display components. The refractive index of the substance is preferably similar to the refractive index of the large optical guide plate as closely as possible. As for the light-transmitting property of the substrate, it is preferable that the transmittance is not less than 50% for the perpendicular incident light at the wavelength in the visible light region, and it is more preferable that the transmittance is not less than 70%, in order to successfully introduce the light into the display component in an efficient manner and suppress the electric power consumption.
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