| 摘要 |
PROBLEM TO BE SOLVED: To enhance contrast ratio by a method, wherein the relations between the fluorescent materials, a light-transmitting molding member, and the optical diffusion agents are set, so that the specific gravities of the fluorescent materials become higher than those of the molding member and the diffusion agents. SOLUTION: Fluorescent materials 101 are contained in a material, which is used as a light-emitting molding member 103, along with light-diffusion agents 102 and stirred. Here, the materials 101 colored in a chromatic color, such as a red color or a yellow color, are selected in ones of a specific gravity higher than the specific gravities of the agents 102 and the specific gravity of a resin, where the materials 101 are made to contain. Whereupon, the high-specific gravity materials 101 are settled out on the side of a light-emitting element 106 by reduction in the viscosity of the resin, which is generated at curing of the resin or the like, and the difference between the specific gravities of the agents 102 an the materials 101. The agents 102 are scattered or are distributed in the side of the surface, which opposes to the element 106 of the member 103. Accordingly, as the agents 102 relax the color of the materials 101 of the colored color from the side of the emission observation surface of a light- emitting device, of since the color of the materials 101 results in being seen in an achromatic color, the contrast between the materials 101 and the agents 102 is enhanced. |
