Abstract: An elastic member according to an embodiment includes a first surface and a second surface opposite to the first surface and a first region and a second region, wherein a first direction in a length direction and a second direction in a width direction are defined, the first region is defined as a folding region, and the second region is defined as an unfolding region, a first pattern portion having an intaglio shape and a second pattern portion having an embossed shape are formed in the first region, the second pattern portion includes a plurality of first patterns and a plurality of second patterns that are spaced apart from each other, and a length of the first pattern extends in a second direction, and a length of the second pattern extends in the first direction.

Abstract: A thin-film transistor including an active layer disposed on a substrate and including a channel region, a source region connected to a side of the channel region, and a drain region connected to the other side of the channel region; a gate insulating layer on the channel region of the active layer; and a gate electrode on the gate insulating layer. A slope of each side surface of the gate electrode with respect to a boundary surface between the gate insulating layer and the gate electrode is an obtuse angle (a substantially obtuse angel). A slope of each side surface of the gate insulating layer with respect to the boundary surface between the gate insulating layer and the gate electrode is an obtuse angle (a substantially obtuse angel).

Abstract: An elastic member according to an embodiment comprises a first area and a second area, wherein the first area is defined as a folding area and the second area is defined as an unfolding area, wherein the elastic member comprises: a first direction defined as a width direction of the elastic member; and a second direction defined as a length direction of the elastic member, wherein the first area comprises a 1-1 area close to a folding axis, and a 1-2 area that is further from the folding axis than the 1-1 area, wherein the first area comprises a first pattern portion extending in the first direction, the first area comprises a bridge portion extending the first pattern portion in the second direction, and the number of the bridge portion in the 1-1 area is 50% or less than the number of bridges in the 1-2 area in the first area.

Abstract: An elastic member according to an embodiment comprises: a first area; and a second area, the first area being defined as a folding area and the second area being defined as an unfolding area, wherein the elastic member comprises a first layer, a second layer on the first layer, and a third layer between the first layer and the second layer, the first layer comprises a metal, the second layer comprises a metal or plastic, the first layer comprises a plurality of pattern portions having a hole or groove shape, the third layer has a storage modulus of 29-150 kPa, and the third layer contacts the first layer with a first adhesive strength and contacts the second layer with a second adhesive strength, and the first adhesive strength and the second adhesive strength are 400-1800 gf/in.

Abstract: An elastic member, according to one embodiment, comprises: a first layer comprising a first region and a second region; and a second layer on the first layer, wherein the first region is defined as a folding region, the second region is defined as an unfolding region, the first layer is disposed on a second region of the second layer, a pattern part comprising a plurality of holes or grooves is disposed in at least one region among a first region and the second region of the second layer, and the second layer is thicker than the first layer.

Abstract: An elastic member according to an embodiment includes a first surface and a second surface opposite to the first surface and a first region and a second region, wherein a first direction in a length direction and a second direction in a width direction are defined, the first region is defined as a folding region, and the second region is defined as an unfolding region, a first pattern portion having an intaglio shape and a second pattern portion having an embossed shape are formed in the first region, the second pattern portion includes a plurality of first patterns and a plurality of second patterns that are spaced apart from each other, and a length of the first pattern extends in a second direction, and a length of the second pattern extends in the first direction.

Abstract: A light route control member according to an embodiment comprises: a first substrate into which light is incident from an external area; a first electrode disposed on the top surface of the first substrate; a second substrate disposed above the first substrate; a second electrode disposed on the bottom surface of the second substrate; and a light conversion unit disposed between the second electrode and the second electrode, wherein the light conversion unit comprises partition wall units and receiving units which are alternately arranged, each of the receiving units has a light transmittance that changes according to the application of voltage, the refractive index of the partition wall units is larger than the refractive index of the external areas, and the difference between the refractive index of the partition wall units and the refractive index of the external areas is 0.3 or higher.

Abstract: Provided is a method for dynamic resource allocation of uplink and downlink in an OFDMA/TDD cellular system. The method for dynamic resource allocation of uplink in an OFDMA/TDD cellular system includes the steps of determining the number of sub-channels which can be allocated to each user through an FLR algorithm; performing channel allocation for a first frame through a round-robin algorithm in which channel information is not needed; performing dynamic channel allocation for a next frame through uplink channel information measured by uplink channel sounding; and performing power control.

Abstract: Provided are a transmission method and apparatus for allocating a subchannel and forming a stationary beam to maximize transmission efficiency in an OFDMA based wireless communication system. The method includes determining the subchannel for the equipment of each user based on the channel state of the equipment of each user, determining a beam index for the equipment of each user, based on location information and direction of arrival information of the equipment of each user, generating an OFDM symbol by mapping a modulation symbol corresponding to the equipment of each user to the determined subchannel, and transmitting the generated OFDM symbol to a wireless space by forming a beam following the determined beam index. Using the method, the equipment of each user can be allocated with an advantageous subchannel, can remove an interference signal at low cost, and can increase total throughput of an OFDMA system downlink.

Abstract: Provided are a dynamic resource allocation method and apparatus in an Orthogonal Frequency Division Multiple Access (OFDMA)-based cognitive radio system and a downlink frame structure of the method and apparatus. The method includes a base station (BS) selecting one of an Adaptive Modulation and Coding (AMC) subchannel allocation scheme, in which a subchannel comprising at least one bin comprising a first plurality of continuous subcarriers in a frequency domain, is allocated, and a diversity subchannel allocation scheme, in which a subchannel comprising a second plurality of scattered subcarriers in the frequency domain is allocated, according to a level of frequency selectivity of an unused idle frequency band; and the BS allocating at least one subchannel to a terminal according to the selected subchannel allocation scheme. Accordingly, downlink throughput in the cognitive radio system can be increased.