A matrix display comprises pixels based on switching elements which comprise a switchable layer which can be switched from one chemical state to another, the optical properties of said chemical states being different. The present invention also relates to the use of the adhesive in engineered wood boards and to methods for the production thereof. Because decomposition temperature of the separation layer A is higher than growth temperature of the protection layer B and lower than growth temperature of the semiconductor crystal C, the separation layer A vanishes by thermal decomposition, which generates this separation process. Alternatively, plasma treatment is performed on the surface of the interlayer insulating film on the TFT for surface modification. Embodiments include a plurality of attachment points to which a lower end of an adjustment lanyard can be attached. An elongated slot is provided along the base and dimensioned so as to receive an end of the roll of sheet material for dispensing through the slot.