Optical sheet, image source unit, display device, process for producing optical sheet, and method for manufacturing display device

摘要

An optical sheet is disposed on an observer side relative to an image source and includes a plurality of layers that control light emitted from the image source to emit the light on the observer side. At least one of the plurality of layers is a base material layer. One layer disposed on one side of the base material layer is an optical functional sheet layer which includes prisms arranged in parallel along the sheet surface of the optical sheet whereby light can be transmitted and light-absorbing parts are arranged in parallel between the prisms whereby light can be absorbed. One layer disposed on the other side of the base material layer is an adhesive layer. An adhesive layer is not provided on a side surface of the optical functional sheet layer facing the side disposed with the base material layer.