Patents by Inventor Yong Kon Lee
Yong Kon Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9183790Abstract: A liquid crystal display device and a controlling method thereof are provided. The liquid crystal display device includes a liquid crystal display panel screen divided into a plurality of areas; a plurality of backlight sources to selectively irradiate light respectively to the divided areas of the screen; and a controller to obtain at least one intermediate brightness value associated with data for at least one of the divided areas and to control a brightness of at least one of the backlight sources corresponding to the at least one divided area according to the at least one intermediate brightness value.Type: GrantFiled: June 29, 2005Date of Patent: November 10, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Yong Kon Lee, Tae Wook Lee
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Patent number: 8960935Abstract: Disclosed is a printed circuit board, on which a holder for fixing a lamp is mounted, is disposed on an upper surface of a bottom cover, and an inverter supplying a driving voltage to the lamp is disposed on a lower surface of the bottom cover. The printed circuit board is electrically connected to the holder as a conductive pattern is embedded in the printed circuit board. The connector is directly mounted on the inverter, or it is connected to the inverter via a wire. In this case, the connector is also connected to the printed circuit board. Therefore, the connector of the inverter and the connector of the printed circuit board are electrically connected.Type: GrantFiled: December 26, 2007Date of Patent: February 24, 2015Assignee: LG Display Co., Ltd.Inventors: Eun Seok Jang, Sung Keun Lee, Jae Ho Lee, Chang Ho Lee, Yong Kon Lee, Oh Sang Kwon, Dae Heung Lee, Seung Hyun Kim, Jin Seo Park
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Patent number: 8730429Abstract: A PCB and an LCD device with the same are disclosed. The PCB and the LCD device force an LED to directly contact either a heat radiation member or a metal plate. As such, heat generated in the LED is directly transferred to the heat radiation member or the metal plate without passing through wiring and prepreg layers. Therefore, the heat is effectively discharged to the exterior through a bottom cover. In other words, heat generated in the LED can be effectively discharged because of passing through the shortened heat radiation path.Type: GrantFiled: November 19, 2010Date of Patent: May 20, 2014Assignee: LG Display Co., Ltd.Inventors: Yong Kon Lee, Jae Ho Lee, Yong Seok Kwak
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Publication number: 20110122336Abstract: A PCB and an LCD device with the same are disclosed. The PCB and the LCD device force an LED to directly contact either a heat radiation member or a metal plate. As such, heat generated in the LED is directly transferred to the heat radiation member or the metal plate without passing through wiring and prepreg layers. Therefore, the heat is effectively discharged to the exterior through a bottom cover. In other words, heat generated in the LED can be effectively discharged because of passing through the shortened heat radiation path.Type: ApplicationFiled: November 19, 2010Publication date: May 26, 2011Inventors: Yong Kon LEE, Jae Ho Lee, Yong Seok Kwak
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Patent number: 7911147Abstract: A limited current circuit of this invention comprising: a transformer that raises an alternating current (AC) power supplied from the digital inverter to an AC voltage of a high voltage to light a lamp; a voltage/current detection unit that detects at least one of the current and voltage supplied to the lamp; an A/D converter that converts the detected voltage/current value of analog to a digital value; and a microcontroller unit (MCU) that induces an LCC check point after the start of a striking process, compares at least one of the output current value and voltage value from the transformer with a preset reference value on the basis of an output signal of the A/D converter and then shuts down the inverter when the output current value or voltage value is determined to be abnormal, wherein the reference value comprises at least one of the current value and voltage value measured at the LCC check point when an object having noninductive resistance is not contacted to the inverter.Type: GrantFiled: December 27, 2006Date of Patent: March 22, 2011Assignee: LG Display Co., Ltd.Inventors: Oh-Sang Kwon, Chang-Ho Lee, Yong-Kon Lee
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Patent number: 7834840Abstract: A liquid crystal display device including a liquid crystal display panel, a printed circuit board connected to the liquid crystal display panel, a transformer connected to the printed circuit board, and a ferrite core plate disposed between the printed circuit board and the transformer.Type: GrantFiled: June 29, 2006Date of Patent: November 16, 2010Assignee: LG Display Co., Ltd.Inventors: Yong-Kon Lee, Jae-Ho Lee
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Patent number: 7489091Abstract: A backlight unit includes: a plurality of cold cathode fluorescent lamps; a plurality of capacitors respectively connected to both ends of each of the cold cathode fluorescent lamps, the capacitors having respective impedance that are selected to allow the same amount of current to flow through each of the plurality of the cold cathode fluorescent lamps; and an inverter connected to the capacitors of the cold cathode fluorescent lamps.Type: GrantFiled: June 24, 2005Date of Patent: February 10, 2009Assignee: LG Display Co., Ltd.Inventors: Pu Jin Kim, Jae Ho Lee, Yong Kon Lee
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Publication number: 20080180947Abstract: Disclosed is a printed circuit board, on which a holder for fixing a lamp is mounted, is disposed on an upper surface of a bottom cover, and an inverter supplying a driving voltage to the lamp is disposed on a lower surface of the bottom cover. The printed circuit board is electrically connected to the holder as a conductive pattern is embedded in the printed circuit board. The connector is directly mounted on the inverter, or it is connected to the inverter via a wire. In this case, the connector is also connected to the printed circuit board. Therefore, the connector of the inverter and the connector of the printed circuit board are electrically connected.Type: ApplicationFiled: December 26, 2007Publication date: July 31, 2008Inventors: Eun Seok Jang, Sung Keun Lee, Jae Ho Lee, Chang Ho Lee, Yong Kon Lee, Oh Sang Kwon, Dae Heung Lee, Seung Hyun Kim, Jin Seo Park
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Publication number: 20080001554Abstract: Disclosed is a technique suitable for performing a stable protection function while satisfying a standard specification in the implementation of an LCC of a digital inverter for an LCD backlight. The LCC of a digital inverter for an LCD backlight comprises: a transformer which raises a AC power supplied from the inverter to an AC voltage of a high voltage for lighting a lamp; a voltage/current detection unit for detecting at least one of the current and voltage supplied to the lamp; an A/D converter for converting the detected voltage/current value of analog to a digital value; and an MCU which induces an LCC check point after the start of a striking process, compares at least one of the output current value and voltage value from the transformer with a preset reference value on the basis of an output signal of the A/D converter and then shuts down the inverter when the output current value or voltage value is determined to be abnormal.Type: ApplicationFiled: December 27, 2006Publication date: January 3, 2008Inventors: Oh-Sang Kwon, Chang-Ho Lee, Yong-Kon Lee
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Patent number: 7314304Abstract: A backlight unit is disclosed, to remove an unnecessary portion from a PCB and to decrease the number of connectors and wires, which includes a plurality of light-emitting lamps arranged in one direction inside a lamp housing; first and second driving unit PCBs positioned at both sides on the rear surface of the lamp housing, to apply a power to the light-emitting lamps; first and second connection PCBs positioned at both sides of the lamp housing, wherein the respective first and second connection PCBs are separately provided from the first and second driving unit PCBs; and first and second power supplying wires for the respective connection between the first and second driving unit PCBs with the first and second connection unit PCBs.Type: GrantFiled: June 30, 2005Date of Patent: January 1, 2008Assignee: Alps Electric Co., Ltd.Inventors: In Ho Ahn, Jae Ho Lee, Yong Kon Lee, Tae Wook Lee
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Publication number: 20070296903Abstract: A liquid crystal display device includes a liquid crystal display panel, a plurality of lamps for irradiating light onto the liquid crystal display panel, a cover bottom that houses the plurality of lamps, an inverter printed circuit board having a first surface and a second surface opposite to the first surface with an insulation base layer between the first and second surfaces, wherein the second surface is adjacent to the cover bottom, a transformer on the first surface of the inverter printed circuit board, and a metal shielding pattern on the second surface of the inverter printed circuit board directly between the transformer and the cover bottom.Type: ApplicationFiled: December 18, 2006Publication date: December 27, 2007Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Chang Ho Lee, Yong Kon Lee, Oh Sang Kwon
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Patent number: 7312583Abstract: An apparatus for driving a lamp comprising at least one lamp, an inverter to supply an alternating current signal, a transformer to boost the signal from the inverter and to supply the boosted signal to the lamp, and a safety circuit to detect the signal flowing to the lamp and to compare the signal with a predetermined threshold to shut down the inverter in accordance with the compared result.Type: GrantFiled: June 29, 2005Date of Patent: December 25, 2007Assignee: LG.Philips Co., Ltd.Inventors: Pu Jin Kim, Jae Ho Lee, Yong Kon Lee
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Publication number: 20070165151Abstract: A liquid crystal display device including a liquid crystal display panel, a printed circuit board connected to the liquid crystal display panel, a transformer connected to the printed circuit board, and a ferrite core plate disposed between the printed circuit board and the transformer.Type: ApplicationFiled: June 29, 2006Publication date: July 19, 2007Inventors: Yong-Kon Lee, Jae-Ho Lee
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Publication number: 20060208999Abstract: A liquid crystal display device and a controlling method thereof are provided. The liquid crystal display device includes a liquid crystal display panel screen divided into a plurality of areas; a plurality of backlight sources to selectively irradiate light respectively to the divided areas of the screen; and a controller to obtain at least one intermediate brightness value associated with data for at least one of the divided areas and to control a brightness of at least one of the backlight sources corresponding to the at least one divided area according to the at least one intermediate brightness value.Type: ApplicationFiled: June 29, 2005Publication date: September 21, 2006Inventors: Yong Kon Lee, Tae Wook Lee