Laser speckle noise occurs owing to the strong interference that originates in the high coherency of laser light and the surface topography of the screen. The suppression of the speckle noise is necessary for laser displays such as in an image projection system. In order to reduce speckle noise, we try to control the speckle pattern by using liquid crystals (LCs) that have electrically controllable optical characteristics. In this paper, we formulate an idea for suppressing speckle noise using a voltage-gradient LC cell and a polymer-dispersed LC cell.