To develop such a reflection plate that the balance between reflectance and transmittance can be easily controlled, that a plate with high reflectance can be easily obtd., that the diffusing degree for reflected light can be easily controlled, that coloring of the transmitted light can be prevented, that even when defects such as pinholes, irregularity and scratches are present on the reflection face, they do not cause significant decrease in the display quality, and that the plate can be produced by easy operation with high production efficiency and excellent mass productivity.

The semitransmitting reflection plate consists of a reflection plate having a light-shielding metal thin film 2 supported by a light transmitting base body 1. The metal thin film 2 has many fine openings on the surface and the openings have the light transmitting property. Further, the metal thin film 2 is coated with a light-diffusing cohesive layer 3 containing transparent particles having preferably 2.5 to 40 μm average particle size. By this method, visibility of the openings on the reflection face is reduced by the diffusing effect of the cohesive layer 3, and the openings are homogenized and become hardly conspicuous, to prevent it from causing decrease in the display quality of a liquid crystal display device or the like.