The present invention relates to a compound having a leukotriene inhibitory action, and useful for the prophylaxis or treatment of diseases such as allergy, asthma, inflammation, cancer and the like. A display device is also disclosed, the display device comprising the above lens grating and a display module. A \u201cquality-of-service\u201d process manages the transmission of digital data over various sub-channels based on the reliability of the sub-channel, the amount of digital data and the type of digital data to be transmitted. writing, reading, or erasing, using the ExpressCard interface.