Abstract: A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.

Abstract: The present application relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the short sequences with the respective scrambling sequences; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain.

Abstract: The present disclosure relates to a memory system capable of encrypting and storing data, and a memory controller. The memory controller may include a first interface configured to perform data Communication with a first external device, a second interface configured to generate a signal for controlling an operation of a second extern& device and transmit the signal; and a processor configured to receive, from the first external device, a data write command to write data to the second external device, encrypt the data by using one of a plurality of keys stored in a key area provided in the first external device in response to the data write command, and then control the encrypted data to be written to the second external device.

Abstract: A polarizing plate and an optical display including the same are provided. A polarizing plate includes: a polarizer; and a first protective layer and a second protective layer sequentially stacked on a surface of the polarizer, and the second protective layer includes a positive C retardation layer, the positive C retardation layer having a thickness of about 10 ?m or less, an index of refraction of about 1.50 to about 1.55, and a glass transition temperature (Tg) of about 150° C. to about 250° C.

Abstract: Disclosed is a method of producing an electron-absorption modulator having a reverse mesa structure. In the electron-absorption modulator, a first clad of a first conductivity type, an active layer of the first conductivity type, a second clad layer of a second conductivity type and an ohmic contact layer of the second conductivity type are formed on a semiconductor substrate of the first conductivity type. Then, a predetermined mask pattern is formed on the ohmic contact layer. Afterwards, the ohmic contact layer is etched by using the mask pattern. Then, the second clad layer and the active layer below the ohmic contact layer are etched in the form of the reverse mesa structure to expose the first clad layer. Then, the first clad layer is etched at a predetermined depth in the form of a mesa structure.