An object of the present invention is to provide a liquid crystal display, which can surely perform an instillation process used when liquid crystal is sealed between substrates in a cell process, and a fabrication method thereof. An OLED may be used to emit light and detect ambient light in such a system. The invention also relates to a method and intermediate product for the production of said compound in addition to the use thereof for combating undesirable plants. A hole is formed in the dielectric layer to expose the first conductive layer, and the hole is filled with a conductive material.