Use of TiOF2 as semiconductor in a photoelectric conversion device, in particular in a dye-sensitized solar cell. An ellipticity of elliptically polarized light, which is incident on the liquid crystal display panel LPN in a principal viewing-angle direction is greater than an ellipticity of elliptically polarized light, which is incident in a anti-principal viewing-angle direction. The MCU determines if the read input voltage of the power supply device falls within a predetermined input voltage range, determines if the read output voltage of the power supply device falls within a predetermined output voltage range, and determines if the read power of the power supply device falls within a predetermined power range. A pulley subassembly has a rotator bolt with two threaded ends and a bushing and threaded nuts and larger and smaller pulleys each with a central hole, and a belt between the pulleys. Each active noise cancellation device within the array, when combined with the outputs of the other devices within the array, produces a noise cancellation wavefront that actively cancels a portion of an ambient sound wavefront.