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Chang-Hee Lee
Chang-Hee Lee, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090029546 | METHOD FOR FORMING METAL LINES OF SEMICONDUCTOR DEVICE - Methods are disclosed for forming metal lines of a semiconductor device that can reduce interconnection or contact resistance, and can reduce defects in a barrier metal layer having a column structure. The method can include forming a first metal line on a semiconductor substrate, forming an insulating film on the first metal line, forming a contact hole in the insulating film, sequentially forming a barrier metal layer and a capping layer for protecting the barrier metal layer on an entire upper surface of the resultant substrate, oxidizing the capping layer to form a capping oxide film, depositing a contact metal material on the resultant substrate, planarizing the contact metal material to expose the insulating film, and forming a second metal line on the insulating film. | 01-29-2009 |
| 20090198772 | DATA SYNCHRONIZATION METHOD AND SYSTEM BETWEEN DEVICES - A data synchronization method for more than three networked devices including at least one client and one server for efficiently synchronizing data among multiple devices supporting a Synchronization Markup Language (SyncML) protocol is provided. The data synchronization method includes determining whether a data item indicated by synchronization information contained in a synchronization request message exists in a change log table of the server, when a server receives the synchronization request message sent by a first client, and updating the change log table by adding the data item indicated by the synchronization information and transmitting a synchronization request message containing a data identifier and the change log of the data item to a second client, if a data item indicated by the synchronization information does not exist, otherwise, ending data synchronization by transmitting a synchronization response message containing status information to the first client. | 08-06-2009 |
| 20100006830 | Organic semiconductor compound based on 2,7-bis-(vinyl)[1]benzothieno[3,2-b]benzothiophene, organic semiconductor thin film and transistor using the same and methods of forming the same - An organic semiconductor compound based on a 2,7-bis-(vinyl)[1]benzothieno[3,2-b]benzothiophene backbone, an organic semiconductor thin film, an organic thin film transistor and methods of forming the same are provided, the organic semiconductor compound including a vinyl group derived from a phosphonate derivative represented by Formula 1 and an aldehyde derivative represented by Formula 2 below: | 01-14-2010 |
| 20100181900 | CARBAZOLE COMPOUNDS AND ORGANO-ELECTROLUMINESCENT DEVICES USING THE SAME - A carbazole compound represented by Formula 1: | 07-22-2010 |
Chang-Hee Lee, Hwaseong-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100138595 | SEMICONDUCTOR DEVICE COMPRISING FLASH MEMORY AND ADDRESS MAPPING METHOD - A semiconductor device with flash memory includes; a log type determining unit configured to select log type from among a plurality of log types with respect to a log block storing program data requested to be programmed in the flash memory and generate a control signal indicating information indicating the selected log type, and a plurality of log units configured to store program data in the log block having a corresponding log type in response to the control signal, wherein the log type determining unit converts a first type log block formed by a first log type and included in a first type log unit from among the plurality of log units into second type log block formed by a second log type and converts the log block included in a second type log unit from among the plurality of log units into the first type log blocks, the first loge type being different from the second log type. | 06-03-2010 |
Chang-Hee Lee, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090211640 | Electron injecting layer including superacid salt, lithium salt or mixture thereof, photovoltaic device including the electron injecting layer, method of manufacturing the photovoltaic device, and organic light-emitting device including the electron injecting layer - Provided are an electron injecting layer formed by spin-coating a solution of a superacid salt, a lithium salt or a mixture thereof dissolved in a solvent, a photovoltaic device including the same, a method of manufacturing the photovoltaic device, and an organic light-emitting device including the electron injecting layer. | 08-27-2009 |
Chang-Hee Lee, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090196612 | Optical modulation method and system in wavelength locked fp-ld by injecting broadband light source using mutually injected fp-ld - The present invention relates to an optical modulation method and optical modulation system of a wavelength locked Fabry Perot-Laser Diode (FP-LD) by injecting a broadband light source (BLS) using mutual injection of FP-LDs. More specifically, the present invention relates to a novel modulation technology which embodies a wavelength locked FP-LD capable of being used as an economic light source in an optical network based on a wavelength-division multiplexing passive optical network (WDM-PON). According to the present invention, a light modulation system is suggested comprising: BLS being constructed by mutual injection between two FP-LDs and an optical fiber being used for light transmission; first AWG for filtering light from a plurality of oscillation modes of the BLS into n group; n FP-LDs outputting wavelength locked light which is divided through the first AWG; an encoder being provided at a transmitting end of a subscriber to which the output from the first AWG is transmitted; a circulator outputting light which is inputted through the first AWG; second AWG de-multiplexing WDM signals from the first AWG into n group; and a decoder being provided at a receiving end to which the output from the second AWG is transmitted. Therefore, the present invention makes it possible to provide a more economic light source for WDM-PON subscribers by embodying a wavelength locked FP-LD by injecting a low-cost BLS. | 08-06-2009 |
Chang-Hee Lee, Daejon City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080232805 | Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source - The present invention relates to a wavelength-tunable light source whose output wavelength can be externally controlled and a wavelength-division multiplexed transmission system using the source. | 09-25-2008 |
Chang-Hee Lee, Hwaseong KR
| Patent application number | Description | Published |
|---|---|---|
| 20110266253 | MASTER MOLD, MASTER MOLD FABRICATION METHOD, AND METHOD FOR FABRICATING LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A method for fabricating a liquid crystal display (LCD) device wherein a photolithography technique is replaced by soft lithography is disclosed. The method includes: forming a thin film transistor array substrate; forming a color filter substrate; bonding the thin film transistor array substrate and the color filter substrate; and applying a liquid crystal between the thin film transistor array substrate and the color filter substrate, wherein at least one of the forming the thin film transistor array substrate and the forming the color filter substrate includes a pattern forming method using a soft mold. The pattern forming method may be a soft lithography process that includes: contacting a soft mold having a particular pattern with a surface of a buffer layer and applying a constant heat to the soft mold and buffer layer to transfer the particular pattern onto the buffer layer. | 11-03-2011 |