Samsung Display Co., Ltd.

Sap Se

Kt Corporation

Yonsei University

Snur & Db Foundation

University of Seoul Foundation of Industry Academic Cooperation

Joo Young Yoon

Hyeok Jin Lee

Sung-Jae Yun

Jae Hong Park

Oh Jeong Kwon

Kyung Hye Park

Su Jin Kim

Hyoung Sub Lee

Yung Ha Ji

Kyu Jeong Han

Jiang Shuai

Ki Chul Shin

Kwang-chul Jung

Sang Cheol Shin

Sang-uk Lim

Dong-Chul Shin

Seung-Yeon Chae

Heung Shik Park

Sung Heun Wi

Joo Ae Youn

Hyun-Cheol Moon

Hoon Jong Kang

Min Su Kim

Sung H Hong

Sang Won Lee

Jae-Hong Park

Suk Ho Choi

Sang Kyun Cha

Chung Sock Choi

Koichi Sugitani

Ki Hong Kim

Tae Woon Cha

Yongsik Yoon

Si Kwang Kim

Sun Ho Lee

Taehyung Lee

Eui Suk Jung

Seung Wook Nam

Sangyong Hwang

Jane Jung Lee

Sang Il Song

Yong Hoon Yang

Jae Ho Chung

Jang Hyun Kim

Seung Yeon Chae

Boyung Lee

Byung Wan Yoon

No-Cheol Park

Oh-Jeong Kwon

Hye In Kim

Shuai Jiang

Hee Jin Park

Junhee Woo

Eun Ok Paek

Kun Soo Park

The present invention relates to an elastic metamaterial for reducing vibrations of a flexible structure such as a main cable of a tether system for controlling an orbit of a satellite revolving around a planet, and a method for improving a vibration reduction performance thereof, and more particularly, to an elastic metamaterial having an improved precision, in which a ratio of a cross-sectional area of a pendulum ring may be adjusted to maintain a frequency characteristic other than a band gap generated due to the elastic metamaterial even in a state where a mass of the pendulum ring is not changed, and a band gap (R_ring) generated due to the pendulum ring of the elastic metamaterial and a band gap (R_beam) generated due to the elastic beams may be combined into one band gap to expand a vibration damping range, and a method for improving a vibration reduction performance thereof.

Elastic metamaterial and method for improving vibration reduction performance thereof

A display device includes a first pixel region (FPR), a second pixel region (SPR), a color conversion pattern (CCP), a first overcoat layer (FOL), a barrier layer (BL), a second overcoat layer (SOL), a liquid crystal layer (LCL), and a switching element (SE). The FPR is configured to display a first color (FC). The SPR is adjacent the FPR, and is configured to display a second color (SC) of a shorter peak wavelength than the FC. The CCP is disposed in the FPR, and is configured to: convert a color of incident light into the FC; and output converted light of the FC. The FOL is disposed on the CCP. The BL is of an inorganic material, and is disposed on the FOL. The SOL is of an organic material, and is disposed on the BL. The LCL is disposed on the SOL. The SE is disposed on the LCL.

Display device and method of manufacturing the same

According to an embodiment of the present disclosure, a display device includes a light source, a first substrate on the light source, a liquid crystal layer on the first substrate, and a second substrate on the liquid crystal layer, wherein the first substrate or the second substrate includes a base substrate, an insulating layer on the base substrate, and partially defining a first cavity and a second cavity having openings facing different directions, a first quantum dot in the first cavity, a second quantum dot in the second cavity, and a cover layer covering the openings of the first and second cavities.

Display device and manufacturing method thereof

A liquid crystal display includes: a first substrate and a pixel electrode thereon, a second substrate facing the first substrate and a common electrode thereon; at least one alignment layer on at least one of the pixel electrode and the common electrode; and a liquid crystal layer between the pixel electrode and the common electrode. A pixel including the pixel electrode includes a plurality of domains including a first domain. The domains have average orientations of the liquid crystal molecules different from each other. The pixel electrode has a first opening in the first domain, and the first opening extends substantially parallel to an edge of the pixel electrode.

Liquid crystal display

Disclosed herein are system, method, and computer program product embodiments for utilizing join cardinality to improve the performance of query processing. An embodiment operates by a database engine receiving a query including a join operation on a first and a second table using a join predicate, and a tag for the join operation indicating a cardinality relationship between the first and the second table when satisfying the join predicate. Then, the database engine generates a query processing plan for performing the query. For the join operation, the database engine selects one of the first or the second tables to remove from the join operation based on a type of the join operation and the tag. Based on the selecting, the database engine may remove may the join operation and the selected table from the query processing plan.

Query optimization using join cardinality

According to various embodiments, systems and methods for performing unit conversion operations in a database system are provided. According to embodiments, a database operation will require unit conversion. A number of unit conversions that might be required both before and after performance of the operation can then be estimated. At least some of the data entries implicated by the operation can then be converted from a first unit to a second unit depending on the result of the estimation.

Unit conversion in database systems

Total global minimum costs can be determined for multiple sub-plans for completing a multi-operation database process to be performed in a distributed database management system that includes a plurality of nodes. The multiple sub-plans can include different distributions of node locations of a plurality of operators among the plurality of nodes. An optimal plan having a lowest total minimum global cost can be selected from the multiple sub-plans.

Optimal operator placement for distributed query processing

A liquid crystal display panel includes substrates opposed to each other, a liquid crystal layer interposed between the substrates, a seal line surrounding an outer peripheral portion of the liquid crystal layer and disposed between the substrates and a liquid crystal alignment layer including a polyimide, the liquid crystal alignment layer including a first region and a second region disposed in an outer peripheral portion of the first region and disposed on one surface of at least one of the substrates, wherein at least a portion of the second region is overlapped with the seal line, the second region having a surface roughness value greater than that of the first region.

Liquid crystal display panel and method of manufacturing the same

A liquid crystal display includes: a first substrate; a pixel electrode disposed on the first substrate; a second substrate facing the first substrate; a common electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate. The common electrode includes a first cross-shaped cutout overlapping the pixel electrode, and a second cutout parallel to an edge of the pixel electrode, the second cutout being separated from the edge of the pixel electrode.

A liquid crystal display including a first substrate, a pixel electrode on the first substrate and including a first subpixel electrode and a second subpixel electrode separated from each other and located in one pixel area, a second substrate facing the first substrate, a common electrode on the second substrate, and a liquid crystal layer between the first substrate and the second substrate, wherein a first voltage applied to the first subpixel electrode is higher than a second voltage applied to the second subpixel electrode, wherein the first subpixel electrode includes first branch electrodes, the second subpixel electrode includes second branch electrodes, the second subpixel electrode is located around the pixel area to enclose the first subpixel electrode, wherein the first branch electrodes and the second branch electrodes face each other in a boundary portion of the first subpixel electrode and the second subpixel electrode.

A WiFi roaming method and device which perform an authentication and accounting process once for multiple APs, thereby reducing the load of an authentication server (RADIUS) in a WiFi roaming method, which separates a terminal session management function and a traffic control function by a access controller and a access point interworked with a tunneling method according to a CAPWAP (Control and Provisioning of Wireless Access Points) protocol.

Method and device for accounting in WiFi roaming based on AC and AP interworking

A display device including a substrate, and pixels disposed on the substrate, each of the pixels including a first sub-pixel and a second sub-pixel, in which the first sub-pixel includes a first cover layer defining a first cavity on the substrate, a first liquid crystal layer disposed in the first cavity, and a first pixel electrode and a first common electrode configured to apply an electric field to the first liquid crystal layer, the second sub-pixel includes a second cover layer defining a second cavity on the substrate, a second liquid crystal layer disposed in the second cavity, and a second pixel electrode and a second common electrode configured to apply an electric field to the second liquid crystal layer, and a first distance between the first pixel electrode and the first common electrode is different from a second distance between the second pixel electrode and the second common electrode.

Display device

A WiFi roaming management method and device which redirect an HTTP request of a mobile terminal from an AP to an AC even though the AC and the AP do not exist in the same subnet, which redirects a source IP address for an HTTP request, after transferring, to an IP address of the AC, and which smoothly support a wireless Internet service in a distributed processing system according to a web authentication of the AC in a WiFi roaming method is provided. A terminal session management function and a traffic control function are separated by a premium AC (Access Controller) and a premium AP (Access Point) interworked with a tunneling method according to a CAPWAP protocol.

Method and device for web redirect authentication in WiFi roaming based on AC and AP interworking

A liquid crystal display includes first and second substrates facing each other, the first and second substrates including facing display areas and peripheral areas around the display areas, a plurality of pixels on the display area of the first substrate, a common voltage applying unit on the peripheral area of the first substrate, a data driving circuit unit on the peripheral area of the first substrate, a data driver connecting line on the peripheral area of the first substrate, the data driver connecting line being positioned between the common voltage applying unit and the display area of the first substrate, and connecting the data driving circuit unit and a data line in the display area, and a sealant between the peripheral areas of the first and second substrates and covering the common voltage applying unit and part of the data driver connecting line.

A liquid crystal display includes a first substrate, a pixel electrode which is disposed on the first substrate and includes a first subpixel electrode which is disposed at a pixel area and includes a plurality of first branch electrodes, and a second subpixel electrode which is separated from the first subpixel electrode, disposed at an outer edge of the pixel area, encloses the first subpixel electrode and includes a plurality of second branch electrodes, a second substrate facing the first substrate, a common electrode disposed on the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, where a first voltage applied to the first subpixel electrode is larger than a second voltage applied to the second subpixel electrode.

Growing community of inventors

Suwon-si, South Korea

Joo Young Yoon