Abstract: A reflective display device includes an antenna array that includes a dielectric material array with an electrochromic material thin film is disposed on one side of a substrate; a control circuit is connected to the electrochromic material thin film using a conductive material so as to control an electrochromic material using an electrical signal; and a change of an imaginary part of a refractive index of the electrochromic material thin film is controlled using the electrical signal to change a specific color of a display luminance.

Abstract: One example image sensor includes a metasurface, a substrate, and an optical-to-electrical converter. Arrays in the metasurface are arranged on the top of the substrate. The metasurface includes multiple subunits. Each subunit includes an array including multiple columnar structures. The bottom of the substrate is disposed on a surface of the optical-to-electrical converter in the image sensor. The metasurface includes at least two media with different refractive indexes. The optical-to-electrical converter includes an array for optical-to-electrical conversion. The array of the optical-to-electrical converter is divided into multiple color regions. The metasurface is configured to refract incident light and transmit, through the substrate, refracted light to a corresponding color region in the array of the optical-to-electrical converter. In addition, each subunit refracts incident light and then transmits refracted light to a color region in a corresponding color unit.

Abstract: The present invention provides a storage medium adapting interface device, comprising a connecting interface and a wireless module for connecting to an application device and an electronic device having a storage device respectively, and a buffer to temporarily store the data from the connecting interface and the wireless module. If the application device asks for writing data into the memory card, the data will be written into the buffer temporarily, and a file is created and opened in the storage device, so that the data can be written into the file via the wireless module. If the application device asks for reading data from the memory card, the file in the storage device is opened, and then the data is written into the buffer via the wireless module. Finally, the data in the buffer is transferred to the application device via the connecting interface.