Abstract: Disclosed are a light emitting device having a plurality of non-polar light emitting cells and a method of fabricating the same. This method comprises preparing a first substrate of sapphire or silicon carbide having an upper surface with an r-plane, an a-plane or an m-plane. The first substrate has stripe-shaped anti-growth patterns on the upper surface thereof, and recess regions having sidewalls of a c-plane between the anti-growth patterns. Nitride semiconductor layers are grown on the substrate having the recess regions, and the nitride semiconductor layers are patterned to form the light emitting cells separated from one another. Accordingly, there is provided a light emitting device having non-polar light emitting cells with excellent crystal quality.
Type:
Grant
Filed:
January 6, 2012
Date of Patent:
October 23, 2012
Assignee:
Seoul Opto Device Co., Ltd.
Inventors:
Won Cheol Seo, Kwang Choong Kim, Kyung Hee Ye
Abstract: A thin film transistor (TFT) includes a substrate, a semiconductor layer disposed on the substrate and including source and drain regions, each having a first metal catalyst crystallization region and a second metal catalyst crystallization region, and a channel region having the second metal catalyst crystallization region, a gate electrode disposed in a position corresponding to the channel region of the semiconductor layer, a gate insulating layer interposed between the semiconductor layer and the gate electrode to electrically insulate the semiconductor layer from the gate electrode, and source and drain electrodes electrically insulated from the gate electrode and electrically connected to the source and drain regions, respectively. An OLED display device includes the thin film transistor and a first electrode, an organic layer, and a second electrode electrically connected to the source and drain electrodes.
Type:
Grant
Filed:
December 30, 2009
Date of Patent:
October 23, 2012
Assignee:
Samsung Display Co., Ltd.
Inventors:
Byoung-Keon Park, Jin-Wook Seo, Tae-Hoon Yang, Kil-Won Lee, Dong-Hyun Lee, Maxim Lisachenko, Ki-Yong Lee
Abstract: A gate driving circuit that may be capable of improving driving margin and maintaining reliability even after long use, and a display device having the gate driving circuit. The gate driving circuit includes a shift register having a plurality of stages dependently connected to one another, wherein each stage includes a pull-up unit outputting a first clock signal as a gate signal in response to a signal of a first node, to which a first input signal is applied, a pull-down unit discharging the gate signal to a gate-off voltage in response to a second input signal, a discharging unit discharging the signal of the first node to the gate-off voltage in response to the second input signal, and a holding unit maintaining the signal of the first node at the gate-off voltage in response to a delay signal of the first clock signal.
Abstract: A liquid crystal display includes a first substrate, a second substrate having a first surface and a second surface facing the first substrate, a liquid crystal layer between the first and second substrates, and a touch sensor layer on the first surface. The touch sensor layer includes a first electrode in a first direction on the first surface, a second electrode in a second direction crossing the first direction on the first surface and including first and second portions that are separated by the first electrode, a bridge wire including first and second contacts on the first surface. The first contact is electrically connected to the first portion of the second electrode, and the second contact is electrically connected to the second portion of the second electrode. An insulating layer insulates the bridge wire from the first electrode and exposes the first contact and the second contact.
Type:
Grant
Filed:
December 10, 2010
Date of Patent:
October 16, 2012
Assignee:
Samsung Display Co., Ltd.
Inventors:
Seong-Mo Hwang, Young-Joon Cho, Jae-Jin Pyun, Ki-Tae Kim, Seung-Ho Nam, Hyun-Ju Lee
Abstract: The present invention relates to an LED package including a lead frame including a chip attaching portion with at least one LED chip attached thereto and a plurality of terminal portions each having a width narrower than the chip attaching portion, and a housing for supporting the lead frame. The plurality of terminal portions include at least one first terminal portion extending from a portion of a width of the chip attaching portion, and a plurality of second terminal portions spaced apart from the chip attaching portion.
Abstract: An LED includes a light-emitting chip, a metal member, and a housing. The light-emitting chip generates light. The light-emitting chip is arranged on the metal member. The housing is combined with the metal member to fix the metal member. The housing has an opening portion exposing at least a portion of the light-emitting chip and the metal member. The metal member includes a base metal layer, a light-reflecting layer arranged on the base metal layer, and a protection layer arranged on the light-reflecting layer and including a metal.
Type:
Grant
Filed:
January 9, 2009
Date of Patent:
October 16, 2012
Assignee:
Seoul Semiconductor Co., Ltd.
Inventors:
Jae-Ho Cho, Sean-Jhin Yoon, Tae-Kwang Kim, Kyung-Nam Kim
Abstract: A display device and a method of driving the same are provided. The display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each display pixel includes: a driving transistor that has a control terminal, an input terminal, and an output terminal; a capacitor that is connected to the control terminal of the driving transistor; a first switching transistor that is connected to the data line and the control terminal of the driving transistor; a light-emitting element that receives a driving current from the driving transistor to emit light; a second switching transistor that is connected between the sensing line and the light-emitting element; and a third switching transistor that is connected between the output terminal of the driving transistor and the light-emitting element.
Type:
Grant
Filed:
March 11, 2009
Date of Patent:
October 16, 2012
Assignees:
Samsung Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University
Abstract: Disclosed are a light emitting device and a method of fabricating the same. The light emitting device comprises a substrate. A plurality of light emitting cells are disposed on top of the substrate to be spaced apart from one another. Each of the light emitting cells comprises a first upper semiconductor layer, an active layer, and a second lower semiconductor layer. Reflective metal layers are positioned between the substrate and the light emitting cells. The reflective metal layers are prevented from being exposed to the outside.
Type:
Grant
Filed:
September 30, 2009
Date of Patent:
October 16, 2012
Assignee:
Seoul Opto Device Co., Ltd.
Inventors:
Won Cheol Seo, Joon Hee Lee, Jong Kyun You, Chang Youn Kim, Jin Cheul Shin, Hwa Mok Kim, Jang Woo Lee, Yeo Jin Yoon, Jong Kyu Kim
Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.
Abstract: An apparatus for allocating a resource in a wireless communication system using an orthogonal frequency division multiple access (OFDMA) scheme includes an analysis unit to analyze a signal received from a terminal over a channel to determine characteristics of the channel; an allocation unit to allocate a first frequency band to the terminal based on the characteristics of the channel; and a frequency hopping unit to perform frequency hopping from the first frequency band to a second frequency band after a first time period. A method for allocating the resource in an OFDMA wireless communication system includes analyzing a signal received from a terminal over a channel to determine characteristics of the channel, allocating a first frequency band to the terminal based on the characteristics of the channel, and performing frequency hopping from the first frequency band to a second frequency band after the first time period.
Abstract: Disclosed herein is a light emitting device with a silicone lens. The light emitting device comprises a heat sink. A package body surrounds at least a portion of the heat sink, and a light emitting diode is mounted on the heat sink. Meanwhile, the light emitting diode is covered with a silicone lens molded on the package body. The molded silicone lens can be employed to prevent reduction in light extraction efficiency due to poor bonding between lens and encapsulant.
Abstract: The present invention provides a light emitting apparatus comprising: a first light emitting portion for emitting white light with a color temperature of 5700K or more; and a second light emitting portion capable of changing the color temperature of the white light emitted from the first light emitting portion, wherein the first and second light emitting portions are independently driven. Accordingly, the present invention has the advantage that it can be diversely applied to desired atmospheres and uses by implementing white light with various light emitting intensities and color temperatures. Further, there is an advantage in that the cumbersomeness in a process is reduced, the space efficiency is enhanced, and the costs are reduced.
Abstract: A display device includes a light emitting element to emit light having an intensity that varies depending on a magnitude of a driving current, a capacitor connected between a first node and a second node, a driving transistor having an input terminal connected to a first voltage, an output terminal, and a control terminal connected to the second node, a first switching unit to connect a data voltage and a second voltage to the first node, a second switching unit to switch a connection between the second voltage and the second node, a third switching unit to connect the second node and the light emitting element to the output terminal of the driving transistor, and a fourth switching unit to switch a connection between the control terminal and the input terminal of the driving transistor.
Abstract: Provided are a vertical-type light emitting device and a method of manufacturing the same. The light emitting device includes a p-type semiconductor layer, an active layer, and an n-type semiconductor layer that are stacked, a cover layer disposed on a p-type electrode layer to surround the p-type electrode layer, a conductive support layer disposed on the cover layer, and an n-type electrode layer disposed on the n-type semiconductor layer.
Type:
Grant
Filed:
October 23, 2008
Date of Patent:
October 9, 2012
Assignees:
Seoul Opto Device Co., Ltd., POSTECH Academy-Industry Foundation
Abstract: A mobile communication terminal includes a receiver converting an audio signal outputted from the mobile communication terminal into an audible sound; a coupler dividing the audio signal outputted from the receiver into first and second audio signals which are different in phase from each other; an audio signal amplifier amplifying the second audio signal outputted from the coupler according to a predetermined amplification gain; a receiver port to which the receiver is detachably connected and which includes a first output port transmitting the first audio signal outputted from the coupler to the receiver and a second output port transmitting the second audio signal amplified by the audio signal amplifier to the receiver; and a controller controlling the mobile communication terminal and the amplification gain of the audio signal amplifier.
Abstract: A thin film transistor (TFT) includes a substrate, a semiconductor layer disposed on the substrate and crystallized using a metal catalyst, a gate insulating layer disposed on the semiconductor layer, a gate electrode disposed on the gate insulating layer, an interlayer insulating layer disposed on the gate electrode, and source and drain electrodes disposed on the interlayer insulating layer and electrically connected to source and drain regions of the semiconductor layer through contact holes exposing predetermined regions of the source and drain regions of the semiconductor layer formed within the gate insulating layer and the interlayer insulating layer. A metal silicide including a metal that is different from the metal catalyst is present within a region of the semiconductor layer under the contact hole from the surface of the semiconductor layer to a predetermined depth.
Abstract: Provided is an organic light-emitting display device (OLED) and method of manufacturing the same. The OLED comprises a substrate and a thin film transistor, with source/drain electrodes, located at a predetermined area on the substrate. A passivation layer is located on the source/drain electrodes with a via hole exposing one of the source/drain electrodes. A first pixel electrode is located at the bottom of the via hole, electrically coupled to the exposed source/drain electrode, and extending onto the side wall of the via hole and the passivation layer. A planarization pattern fills the via hole in which the first pixel electrode is located and exposes the portion of the first pixel electrode on the passivation layer.
Abstract: A stereoscopic image display apparatus includes a display panel and an image conversion sheet. The display panel includes a plurality of pixel units. Each pixel unit has a zigzag shape that extends in a first direction. The image conversion sheet includes a plurality of lens units. Each lens unit extends in the first direction and is disposed in a second direction different from the first direction. A plurality of the lens units is disposed in parallel with each other.
Type:
Grant
Filed:
May 12, 2009
Date of Patent:
October 9, 2012
Assignee:
Samsung Display Co., Ltd.
Inventors:
Seung-Hoon Lee, Kyoung-Ju Shin, Hae-Young Yun, Sung-Woon Kim, Lu Jian Gang
Abstract: A method, apparatus and a computer readable record media storing instructions for executing the same method for interfacing among a hybrid type synchronous or asynchronous terminal to a core network in a next generation mobile telecommunications system. The hybrid type synchronous or asynchronous radio network determines the operating type of the core network when the core network has a connection thereto, and sends the determined core network operating type information and information related to the core network to the hybrid type synchronous or asynchronous terminal, thereby allowing the synchronous or asynchronous terminal to smoothly perform a data interfacing operation with the core network.
Type:
Grant
Filed:
December 28, 2007
Date of Patent:
October 9, 2012
Assignee:
Pantech Co., Ltd.
Inventors:
Jae-Hong Park, Woon-Hee Hwang, Yeon-Sang Koo, Chong-Won Lee, Shin-Hyun Yang, Jeong-Hwa Ye
Abstract: The present invention comprises a substrate, and at least one serial array having a plurality of light emitting cells connected in series on the substrate. Each of the light emitting cells comprises a lower semiconductor layer, an upper semiconductor layer, an active layer interposed between the lower and upper semiconductor layers, a lower electrode formed on the lower semiconductor layer exposed at a first corner of the substrate, an upper electrode layer formed on the upper semiconductor layer, and an upper electrode pad formed on the upper electrode layer exposed at a second corner of the substrate. The upper electrode pad and the lower electrode are respectively disposed at the corners diagonally opposite to each other, and are symmetric with respect to those of adjacent another of the light emitting cells.
Type:
Grant
Filed:
May 19, 2011
Date of Patent:
October 9, 2012
Assignee:
Seoul Opto Device Co., Ltd.
Inventors:
Yeo Jin Yoon, Jong Kyu Kim, Jun Hee Lee