To provide brightness amplifying function to a projection screen so as to realize the brighter observation of an image projected by a motion picture projector or a projector.

A package 10 is made by bringing a light-receiving element 3, an amplifier, and a light-emitting element 5 close to each other to form a unit pixel. The unit pixels are integrated to form a screen, and the power is supplied to the unit pixels. When an image is projected on the screen, the image is amplified to be a light-emitting amplified light-emitting screen. By adding various functions to the unit pixel, the color image readiness, the polarization type three-dimensional image readiness, and the light-emitting duty ratio can be improved.