Abstract: A multi-layer mirror for a micro-cavity structure of a luminescent device and method for forming the same. A buffer layer is formed on a transparent substrate of a luminescent device. A plurality of thin films of different refractive indices is formed on the buffer layer to serve as a multi-layer mirror.

Abstract: A multi-layer mirror and the fabricating method thereof. The mirror is applicable for manufacture of micro-cavities in light emitting devices. The method of fabricating the multi-layer mirror includes sputtering a first-layer mirror with a first refractive index on a transparent substrate of a light-emitting device using a first reactive gas, sputtering a second-layer mirror with a second refractive index using a second reactive gas, and repeating the previous two steps to form a multi-layer mirror having at least two adjacent layers with various refractive indices.

Abstract: A digital business card has a rectangular substrate and a magnetic stripe. The substrate has a printing surface disposed on a surface of the substrate for printing visual data, and a photo-recording region disposed on the rear of the substrate for storing digital data. The magnetic stripe is disposed on the surface of the substrate adjacent to a short side of the substrate for recording magnetic recording data and storing a specific encoded password. The digital business card effectively controls reading data in the digital business card through the combination of the magnetic stripe and the photo-recording region so as to prevent the data from being stolen. Besides, the digital business card has the same size as a conventional printed business card, so that the digital business card is carried handily and has high capacity of storing data.

Abstract: A digital business card has a rectangular substrate and a magnetic stripe. The substrate has a printing surface disposed on a surface of the substrate for printing visual data, and a photo-recording region disposed on the rear of the substrate for storing digital data. The magnetic stripe is disposed on the surface of the substrate adjacent to a short side of the substrate for recording magnetic recording data and storing a specific encoded password. The digital business card effectively controls reading data in the digital business card through the combination of the magnetic stripe and the photo-recording region so as to prevent the data from being stolen. Besides, the digital business card has the same size as a conventional printed business card, so that the digital business card is carried handily and has high capacity of storing data.