Abstract: The present disclosure relates to a safe foothold apparatus for a platform, wherein a foothold plate protrudes from and is retracted into the platform by moving along a curved rotational route so that the foothold plate is re-retracted into the platform safely due to the operation structure even when a collision occurs between a train and the foothold plate in a protrusion state. Therefore, the present invention can prevent the foothold plate and the train from being damaged, thereby establishing safer boarding/alighting environment and stably maintaining the operational state of the foothold plate by using a frictional contact module even in an emergency situation. Accordingly, the present invention can improve safety through a simple structure, facilitate the manufacturing and establishment work by simplifying a structure of a manual operation module, reduce the size of a whole apparatus, and far enhance the operational stability.

Abstract: A double gate type thin film transistor includes a first electrode on a substrate; a gate insulating layer on the first gate electrode; a semiconductor layer on the gate insulating layer corresponding to the first gate electrode; an etch stop layer on the semiconductor layer; source and drain electrodes contacting both sides of the semiconductor layer, respectively, and spaced apart from each other on the etch stop layer; a passivation layer on the source and drain electrode; and a second gate electrode on the passivation layer and having a double-layered structure of a transparent electrode and an opaque electrode.

Abstract: A double gate type thin film transistor includes a first electrode on a substrate; a gate insulating layer on the first gate electrode; a semiconductor layer on the gate insulating layer corresponding to the first gate electrode; an etch stop layer on the semiconductor layer; source and drain electrodes contacting both sides of the semiconductor layer, respectively, and spaced apart from each other on the etch stop layer; a passivation layer on the source and drain electrode; and a second gate electrode on the passivation layer and having a double-layered structure of a transparent electrode and an opaque electrode.

Abstract: A universal serial bus (USB) type wireless data card is used for wireless communication in a multi-in/multi-out (MIMO) environment. The USB type wireless data card includes a card body. A USB connector is disposed at one end of the card body and connectable to a USB port of an electronic device. An antenna part includes first and second antennae connected to the card body such that the first and second antennae may be received in the card body and may be extended from the card body to move away from the card body and be spaced apart from the USB connector.

Abstract: Noise is introduced into test inputs and voltage supplies provided to logic devices while under going testing by modulating a test voltage output with a noise signal to produce the test input. In particular, a noise signal and a test voltage output are generated. The test voltage output is modulated with the noise signal to provide a test input to the logic device. A more accurate approximation of an actual operating environment is thereby provided.