A photosensitive resin composition for an insulating film of a display device includes an alkali soluble resin including a polybenzoxazole precursor, polyamic acid, polyimide, or a combination thereof; a photosensitive diazoquinone compound; an ultraviolet absorber having a maximum absorption wavelength of about 300 to about 400 nm; and a solvent. An apparatus may comprise, for example, power management logic operative to receive idle duration information from one or more inputoutput devices and to modify a power state for one or more components based on the idle information. The stiffening layers also comprise a blend of nonwoven fibers. Patterned ZnO nanotips are also used as the gate for field-effect transistor type sensors. The rooftop is a hard top and is lightweight, allowing a single person to mount or remove the rooftop from the jeep-type vehicle.