In a semiconductor device including a laminate of a first insulating layer, a crystalline semiconductor layer, and a second insulating layer, characteristics of the device are improved by determining its structure in view of stress balance. A one- or two-component epoxy adhesive, structural foam, or matrix material for composites, comprising the aforesaid resin components. The chalkboard is placed in a public mode that allows the chalkboard to control a common display, and information is controlled on the common display using the chalkboard. Local region brightness is localized brightness in an image determined based on the dark and light regions within the image by, for example, using a 2-D Gaussian filter.