Samsung

About: Samsung is a company organization based out in Seoul, South Korea. It is known for research contribution in the topics: Layer (electronics) & Signal. The organization has 134067 authors who have published 163691 publications receiving 2057505 citations. The organization is also known as: Samsung Group & Samsung chaebol.

Three dimensional stack package device having exposed coupling lead portions and vertical interconnection elements

Abstract: A three dimensional stack package device that can realize vertical electrical interconnection of the stacked individual package devices without a cost increase or additional complicated processing steps. The three dimensional package device includes a plurality of individual semiconductor devices, each individual semiconductor device including (1) a semiconductor chip, (2) a protective body for encapsulating the semiconductor chip, (3) a lead frame comprising inner lead portions electrically interconnected to the semiconductor chip and included within the protective body, outer lead portions formed as a single body with the inner lead portions, and coupling lead portions located between the inner and outer lead portions and having a top surface exposed upward from the protective body, and (4) a plurality of vertical interconnection elements attached to a back surface of the coupling lead portions and exposed from the protective body in a direction opposing the exposed top surface of the coupling lead portions, whereby, an electrical interconnection of the plurality of individual semiconductor devices is accomplished by the coupling lead portions and the vertical interconnection elements, and electrical interconnection of the three dimensional stack package device to an external circuit device is accomplished by the outer lead portions of a lowermost semiconductor device.

Display device and method of manufacturing the same

Abstract: A display device includes a lattice-shaped light-shielding pattern disposed on a transparent insulating substrate, and a color filter disposed on transparent insulating substrate, wherein the color filter overlaps with an edge portion of the light-shielding pattern. Moreover, a portion of the color filter that overlaps with the edge portion of the light-shielding pattern is rounded, and a portion of the color filter that does not overlap with the edge portion of the light-shielding pattern is planar.

LLC Resonant Converter With Adaptive Link-Voltage Variation for a High-Power-Density Adapter

Abstract: The output voltage of an adapter for a laptop computer should vary according to the load current in order to supply power to the computer To satisfy this requirement, an LLC resonant converter with an adaptive link-voltage-variation (ALVV) scheme is proposed in this letter The proposed ALVV scheme helps the LLC resonant converter to operate at a nearly constant resonant frequency and also allows for the optimal design of the converter High power density and high efficiency can therefore be obtained The proposed LLC resonant converter with the ALVV scheme is analyzed theoretically and verified experimentally

Mobile terminal, method of controlling wireless charging thereof, and wireless charging system thereof

Abstract: Methods and apparatuses for controlling wireless charging of the mobile terminal are provided. A method of controlling wireless charging of a mobile terminal may include: finding devices in a vicinity of the mobile terminal; if a wireless charging device is not found, comparing a previous charging environment with the found devices to determine whether a current state of the mobile terminal is in an environment where wireless charging can be performed; otherwise, if at least one wireless charging device is found, selecting a wireless charging device having a more optimal connection state from among the wireless charging device found; and outputting a result of the determining or the selecting to a user through the mobile terminal.

Effect of Carboxymethyl Cellulose on Aqueous Processing of Natural Graphite Negative Electrodes and their Electrochemical Performance for Lithium Batteries

Abstract: cMaterials LAB, Samsung Advanced Institute of Technology, Suwon 440-600, Korea Suspensions of natural graphite particles were prepared in an aqueous medium using carboxymethyl cellulose CMC and emulsified styrene-butadiene copolymer latex as part of an environmentally friendly fabrication process for graphite anodes negative electrodes intended for application in Li-ion batteries. Suspensions were characterized by adsorption isotherms, electroacoustic measurements, rheology and sedimentation tests, at two different degrees of carboxymethyl substitution DS on CMC. A lower DS value 0.7 resulted in greater uptake of CMC on graphite compared with a higher DS value 1.28. This was attributed to attractive hydrophobic interactions associated with the lower carboxymethyl substitution. The greater adsorption for DS = 0.7 correlates with lower relative viscosity in concentrated graphite suspensions, a higher adhesion strength with a copper substrate, and a greater retention of discharge capacity after cycling. The effect of DS is attributed to differences in the aqueous dispersion properties and stability of graphite suspensions. Based on these results, we fabricated high-capacity graphite negative electrodes characterized by gravimetric and volumetric energy densities of greater than 340 mAh/g and 560 mAh/cm 3 , respectively. This formulation also led to improved adhesion strength, giving the as-fabricated cell an attractive cycle life greater than 90% of initial discharge capacity after 200 cycles.