Patent application number | Description | Published |
20080224168 | Intride-based semiconductor light emitting diode and method of manufacturing the same - A nitride-based semiconductor LED includes a substrate; an n-type nitride semiconductor layer formed on the substrate; an active layer and a p-type nitride semiconductor layer that are sequentially formed on a predetermined region of the n-type nitride semiconductor layer; a transparent electrode formed on the p-type nitride semiconductor layer; a p-electrode pad formed on the transparent electrode, the p-electrode pad being spaced from the outer edge line of the p-type nitride semiconductor layer by 50 to 200 μm; and an n-electrode pad formed on the n-type nitride semiconductor layer. | 09-18-2008 |
20100006878 | SEMICONDUCTOR LIGHT EMITTING DEVICE HAVING PATTERNED SUBSTRATE AND MANUFACTURING METHOD OF THE SAME - There is provided a semiconductor light emitting device having a patterned substrate and a manufacturing method of the same. The semiconductor light emitting device includes a substrate; a first conductivity type nitride semiconductor layer, an active layer and a second conductivity type nitride semiconductor layer sequentially formed on the substrate, wherein the substrate is provided on a surface thereof with a pattern having a plurality of convex portions, wherein out of the plurality of convex portions of the pattern, a distance between a first convex portion and an adjacent one of the convex portions is different from a distance between a second convex portion and an adjacent one of the convex portions. | 01-14-2010 |
20100065877 | SEMICONDUCTOR LIGHT-EMITTING DEVICE WITH IMPROVED LIGHT EXTRACTION EFFICIENCY - The present invention provides a semiconductor light-emitting device. The light-emitting device comprises a first conductive clad layer, an active layer, and a second conductive clad layer sequentially formed on a substrate. In the light-emitting device, the substrate has one or more side patterns formed on an upper surface thereof while being joined to one or more edges of the upper surface. The side patterns consist of protrusions or depressions so as to scatter or diffract light to an upper portion or a lower portion of the light-emitting device. | 03-18-2010 |
20100085772 | SIDE-VIEW TYPE LIGHT EMITTING DEVICE AND OPTICAL DEVICE INCLUDING THE SAME - A side-view type light emitting device includes a package body, first and second lead frames, a light emitting diode chip, a resin covering portion, and at least one spacer portion. The package body has a first surface provided as a mounting surface, a second surface located opposite to the first surface, side surfaces located between the first surface and the second surface, and a concave portion formed at one of the side surfaces corresponding to the light emitting surface. The first and second lead frames are formed at the package body to be exposed to the bottom of the concave portion. The light emitting diode chip is mounted on the bottom of the concave portion to be electrically connected to each of the first and second lead frames. The resin covering portion is formed in the concave portion to enclose the light emitting diode chip. The spacer portion is formed at the side surface around the concave portion to maintain a constant distance from a light irradiation target without reducing the view angle of light emitted from the light emitting diode chip in the major-axis direction of the concave portion. | 04-08-2010 |
20100276725 | NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE - The invention relates to a high-output nitride light emitting device. The light emitting device includes a first conductivity type nitride semiconductor layer, an active layer and a second conductivity type nitride semiconductor layer deposited in their order on a substrate. The light emitting device also includes first and second insulation layers formed in different upper surface portions of the nitride semiconductor light emitting device, and first and second bonding pads formed respectively on the first and second insulation layers. The light emitting device further includes first and second extension electrodes extended from the first and second bonding pads and coupled respectively to the first and second conductivity semiconductor layers. The electrode arrangement according to the present invention prevents direct coupling between the bonding pads and the light emitting device, thus allowing a symmetrical structure that can achieve more uniform current spreading using only the extension electrodes. | 11-04-2010 |
20110084305 | NITRIDE-BASED SEMICONDUCTOR LIGHT EMITTING DIODE - A nitride-based semiconductor LED includes a substrate; an n-type nitride semiconductor layer formed on the substrate; an active layer and a p-type nitride semiconductor layer that are sequentially formed on a predetermined region of the n-type nitride semiconductor layer; a transparent electrode formed on the p-type nitride semiconductor layer; a p-electrode pad formed on the transparent electrode, the p-electrode pad being spaced from the outer edge line of the p-type nitride semiconductor layer by 50 to 200 μm; and an n-electrode pad formed on the n-type nitride semiconductor layer. | 04-14-2011 |
20110193060 | NITRIDE-BASED SEMICONDUCTOR LIGHT EMITTING DIODE - A nitride-based semiconductor LED includes a substrate; an n-type nitride semiconductor layer formed on the substrate; an active layer and a p-type nitride semiconductor layer that are sequentially formed on a predetermined region of the n-type nitride semiconductor layer; a transparent electrode formed on the p-type nitride semiconductor layer; a p-electrode pad formed on the transparent electrode, the p-electrode pad being spaced from the outer edge line of the p-type nitride semiconductor layer by 50 to 200 μm; and an n-electrode pad formed on the n-type nitride semiconductor layer. | 08-11-2011 |
20110263061 | SEMICONDUCTOR LIGHT EMITTING DEVICE HAVING PATTERNED SUBSTRATE AND MANUFACTURING METHOD OF THE SAME - There is provided a semiconductor light emitting device having a patterned substrate and a manufacturing method of the same. The semiconductor light emitting device includes a substrate; a first conductivity type nitride semiconductor layer, an active layer and a second conductivity type nitride semiconductor layer sequentially formed on the substrate, wherein the substrate is provided on a surface thereof with a pattern having a plurality of convex portions, wherein out of the plurality of convex portions of the pattern, a distance between a first convex portion and an adjacent one of the convex portions is different from a distance between a second convex portion and an adjacent one of the convex portions. | 10-27-2011 |
20120038289 | LED LAMP AND DRIVING CIRCUIT FOR THE SAME - An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp. | 02-16-2012 |
20120043557 | SEMICONDUCTOR LIGHT-EMITTING DEVICE WITH IMPROVED LIGHT EXTRACTION EFFICIENCY - The present invention provides a semiconductor light-emitting device. The light-emitting device comprises a first conductive clad layer, an active layer, and a second conductive clad layer sequentially formed on a substrate. In the light-emitting device, the substrate has one or more side patterns formed on an upper surface thereof while being joined to one or more edges of the upper surface. The side patterns consist of protrusions or depressions so as to scatter or diffract light to an upper portion or a lower portion of the light-emitting device. | 02-23-2012 |
Patent application number | Description | Published |
20120104327 | Spinel-Type Lithium Titanium Oxide/Graphene Composite and Method of Preparing the Same - A spinel-type lithium titanium oxide/graphene composite and a method of preparing the same are provided. The method can be useful in simplifying a manufacturing process and shortening a manufacturing time using microwave associated solvothermal reaction and post heat treatment, and the spinel-type lithium titanium oxide/graphene composite may have high electrochemical performances due to its excellent capacity and rate capability and long lifespan, and thus be used as an electrode material of the lithium secondary battery. | 05-03-2012 |
20130037758 | Preparation Method of Transition Metal Oxide and Carbon Nanotube Composite, and Composite Thereof - Provided is a method of preparing a complex of a transition metal oxide and carbon nanotube. The method includes (a) dispersing carbon nanotube powder in a solvent, (b) mixing the dispersion with a transition metal salt, and (c) synthesizing a complex of transition metal oxide and carbon nanotube by applying microwave to the mixed solution. The method may considerably reduce the time required to synthesize the complex. In the complex of transition metal oxide and carbon nanotube prepared by the method, the transition metal oxide may be stacked on the surface of the carbon nanotube in the size of a nanoparticle, and may enhance charge/discharge characteristics when being applied to a lithium secondary battery as an anode material. | 02-14-2013 |
20140370262 | THREE-DIMENSIONAL GRAPHENE STRUCTURE, AND PREPARATION METHOD THEREOF - A method of preparing a three-dimensional graphene structure, and a graphene structure prepared by the method are provided. The method includes preparing a dispersion in which a graphite oxide is dispersed, and preparing a gel by controlling a degree of reduction of the dispersion. The method can be useful in providing a three-dimensional graphene structure having a specific surface area, a pore size or a volume per unit mass, which is suitable for the field of applications thereof. | 12-18-2014 |
Patent application number | Description | Published |
20100295805 | METHOD OF OPERATING A PORTABLE TERMINAL AND PORTABLE TERMINAL SUPPORTING THE SAME - Disclosed is a portable terminal operation method and a portable terminal supporting the same that enable rapid and convenient operation of a user function in relation to a particular item on a touch screen. The method includes: outputting an area in which one or more scrollable items are arranged; appointing a particular item when a first touch event occurs, determining if a second touch event occurs on the appointed item within a range in which item scrolling does not occur; and changing at least one of a part of a color, and a shape of an image, corresponding to the appointed particular item according to the occurrence of the second touch event. | 11-25-2010 |
20100298034 | LIST SEARCH METHOD AND MOBILE TERMINAL SUPPORTING THE SAME - A list search method and a mobile terminal that implements the list search method are provided. In the list search method, a plurality of search areas for outputting a plurality of index groups respectively are output in a display area where at least one list is output. The index groups include independent indexes or indexes linked with each other. Such operation occurs without screen switching and thereby enables a mobile terminal to implement a list search quickly and easily. | 11-25-2010 |
20100299599 | MOBILE DEVICE AND METHOD FOR EXECUTING PARTICULAR FUNCTION THROUGH TOUCH EVENT ON COMMUNICATION RELATED LIST - A mobile device and a touch-based operation method allow a user to easily and conveniently use a desired communication-related function through a touch-sensitive interface. The mobile device displays a scrollable communication-related list that includes but is not limited to a call log list, a message list, a phonebook list, and an email list. When a specific item is selected in response to a first touch event, the mobile device determines whether or not a second touch event occurs on the selected item in a non-scrollable direction. Then the mobile device executes a particular function predefined in the selected item in response to the second touch event occurring in the non-scrollable direction. | 11-25-2010 |
20110083105 | LIST-EDITING METHOD AND MOBILE DEVICE ADAPTED THERETO - A list-editing method and a mobile device adapted to the method are provided. The method includes displaying a plurality of items on a screen, selecting at least one of the plurality of items according to an input signal, fixing at least one selected item at one side of the screen, and moving at least one non-selected item on the screen, according to a scroll signal. | 04-07-2011 |
20110265040 | METHOD FOR PROVIDING GRAPHICAL USER INTERFACE AND MOBILE DEVICE ADAPTED THERETO - A method for providing a Graphic User Interface (GUI) and a touch screen-based mobile device adapted thereto permit the user to be notified that additional items are available for display. The method preferably includes: determining whether there is an item to be displayed, other than at least one item arranged in an item display allocation area; and displaying, when there is an item to be displayed, an image object, shaped as a certain shape, at a boundary portion of the item display allocation area at which the item to be displayed is created. The intensity, color, pattern, etc. of the image at the boundary can be varied in accordance with the number and urgency of non-displayed items. | 10-27-2011 |
20110294467 | MOBILE DEVICE HAVING A TOUCH-LOCK STATE AND METHOD FOR OPERATING THE MOBILE DEVICE - A mobile device with a touch panel and a touch-lock operating method thereof are provided. The mobile device preferably includes an RF communication unit for supporting communication services; a touch panel for sensing input touches; a display unit for displaying a screen, where the screen includes at least one of a preset image, text, and map; and a controller for setting a touch-lock in the touch panel according to a preset condition. The controller also controls the display unit to display at least one of a text and image or at least one particular icon corresponding to the information reception event that occurs, based on the RF communication unit, in the touch-lock state. A portion of the display screen can be locked, or only certain predetermined touch functions permitted. | 12-01-2011 |
20150074594 | METHOD OF OPERATING A PORTABLE TERMINAL AND PORTABLE TERMINAL SUPPORTING THE SAME - Disclosed is a portable terminal operation method and a portable terminal supporting the same that enable rapid and convenient operation of a user function in relation to a particular item on a touch screen. The method includes: outputting an area in which one or more scrollable items are arranged; appointing a particular item when a first touch event occurs, determining if a second touch event occurs on the appointed item within a range in which item scrolling does not occur; and changing at least one of a part of a color, and a shape of an image, corresponding to the appointed particular item according to the occurrence of the second touch event. | 03-12-2015 |
Patent application number | Description | Published |
20080310361 | APPARATUS AND METHOD FOR RETRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for retransmission in a wireless communication system. The method includes transmitting data to a Mobile Station (MS), identifying if there is an error in the transmitted data through a control message, if there occurs an error in the data, allocating resources for retransmitting data for erroneous data, transmitting information on the resources allocated for retransmission, to the MS, and retransmitting the data for the erroneous data to the MS. | 12-18-2008 |
20090022111 | APPARATUS AND METHOD FOR CIRCUIT MODE RESOURCE ALLOCATION IN BROADBAND WIRELESS ACCESS (BWA) SYSTEM - An apparatus and method for circuit mode resource allocation in a Broadband Wireless Access (BWA) system is disclosed. The method includes generating a first resource allocation message which comprises currently used slot bitmap information with respect to a circuit mode region in a frame; allocating resources to one or more terminals with respect to currently unused slots in the circuit mode region according to the currently used slot bitmap information; and generating a second resource allocation message which comprises information relating to the resource allocation. Thus, the effective circuit mode resource allocation can be achieved without holes in the circuit mode, while maintaining backward compatibility with the existing standards. | 01-22-2009 |
20090067379 | SYSTEM AND METHOD FOR ALLOCATING RESOURCES IN A COMMUNICATION SYSTEM - A method and system for allocating feedback resources in a communication system are provided, in which a Base Station (BS) allocates a first feedback resource area for ACKnowledgment/Negative ACKnowledgment (ACK/NACK) messages for general packets and a second feedback resource area for ACK/NACK messages for fixed packets, transmits the general packets and the fixed packets to at least one Mobile Station (MS), receives ACK/NACK messages in the first and second feedback resource areas, and when at least one of the fixed packets is canceled from transmission after the transmission of the general packets and the fixed packets, transmits a bitmap message to the at least one MS indicating use or non-use of the second feedback resource area for each packet, to enable a feedback resource area allocated for the canceled fixed packet to be allocated to an ACK/NACK message for an additionally generated general packet. | 03-12-2009 |
Patent application number | Description | Published |
20090053608 | Anode active material hybridizing carbon nanofiber for lithium secondary battery - The present invention provides a composite silicon anode material hybridizing carbon nanofiber for lithium secondary battery prepared by the steps comprising: i) preparing a support made by amorphous silicon alloy after processing amorphous silicon and metal; ii) dispersing the catalyst selected from Fe, Co, Ni, Cu, Mg, Mn, Ti, Sn, Si, Zr, Zn, Ge, Pb or In on the surface of said support made by amorphous silicon alloy; and iii) growing the carbon nanofiber using a carbon source selected from carbon monoxide, methane, acetylene or ethylene on said support by a chemical vapor deposition method, wherein the amount of grown carbon nanofiber is 1˜110 wt % of the amount of said support. | 02-26-2009 |
20100230642 | CATALYST FOR PREPARING CARBON NANOTUBE COMPRISING MULTI-COMPONENT SUPPORT MATERIALS CONTAINING AMORPHOUS SILICON PARTICLES AND THE BULK SCALE PREPARATION OF CARBON NANOTUBE USING THE SAME - The present invention relates to a catalyst composition for preparing carbon nanotube containing multi-component support materials of amorphous Si, Mg and Al as well as a bulk scale preparation process for preparing carbon nanotube using said catalyst composition. More specifically, this invention relates to a process for preparing carbon nanotube using the catalyst composition comprising a transition metal catalyst and support materials of amorphous Si, Mg and Al. | 09-16-2010 |