Patents by Inventor Eung-Sang Lee
Eung-Sang 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: 8928550Abstract: A driver chip for controlling a high-resolution display panel is presented. The driver chip is not much larger than a conventional driver chip that is currently used for lower resolution display panels. The driver chip applies data signals to the data lines of the display panel and gate control signals to a gate driver that is formed in the peripheral region of the display panel. The gate driver, which may be made of amorphous silicon TFTs, generates gate signals in response to the gate control signals from the driver chip and applies the gate signals to gate lines. Since the driver chip of the invention controls more gate lines and data lines than a conventional chip of about the same size, the driver chip may be easily adapted for display devices having multiple panels. Where multiple panels are used, the panels may be scanned simultaneously or sequentially.Type: GrantFiled: May 13, 2008Date of Patent: January 6, 2015Assignee: Samsung Display Co., Ltd.Inventors: Young-Bae Jung, Won-Kyu Lee, Jin Jeon, Ji-Suk Lim, Min-Kyung Jung, Eung-Sang Lee, Won-Seok Ma
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Patent number: 8818073Abstract: A display panel test apparatus includes: an image pickup part which picks up an image from a target display panel; a jig including a receiving part which receives the target display panel, a fixing part which fixes the image pickup part, and an adjusting part which adjusts an image pickup angle of the image pickup part; a pattern generating part which provides the target display panel with a test pattern; a defect extracting part which analyzes test image data provided from the image pickup part using a defect extracting algorithm and extracts display defect information, where the defect extracting algorithm includes different settings corresponding to different types of display defects; and a control part which generates evaluated data corresponding to a viewing angle of the target display panel using the image pickup angle of the image pickup part and the display defect information.Type: GrantFiled: December 22, 2010Date of Patent: August 26, 2014Assignee: Samsung Display Co., Ltd.Inventors: Bum-Suk Lee, Eung-Sang Lee, Gi-Chang Park, Jong-Jin Kim, Chan-Youn Park
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Patent number: 8446164Abstract: A semiconductor device test system is disclosed. The semiconductor device test system extends driver- and comparator-functions acting as important functions of a test header to an external part (e.g., a HIFIX board) of the test header, such that it can double the productivity of a test without upgrading the test header. The semiconductor device test system includes a test header for testing a semiconductor device by a test controller, and a HIFIX board for establishing an electrical connection between the semiconductor device and the test header, and including a Device Under Test (DUT) test unit which processes a read signal generated from the semiconductor device by making one pair with a driver of the test header and transmits the processed read signal to the test header.Type: GrantFiled: October 17, 2008Date of Patent: May 21, 2013Assignee: International Trading & Technology Co., Ltd.Inventors: Kyung-hun Chang, Se-kyung Oh, Eung-sang Lee
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Publication number: 20120026315Abstract: A display panel test apparatus includes: an image pickup part which picks up an image from a target display panel; a jig including a receiving part which receives the target display panel, a fixing part which fixes the image pickup part, and an adjusting part which adjusts an image pickup angle of the image pickup part; a pattern generating part which provides the target display panel with a test pattern; a defect extracting part which analyzes test image data provided from the image pickup part using a defect extracting algorithm and extracts display defect information, where the defect extracting algorithm includes different settings corresponding to different types of display defects; and a control part which generates evaluated data corresponding to a viewing angle of the target display panel using the image pickup angle of the image pickup part and the display defect information.Type: ApplicationFiled: December 22, 2010Publication date: February 2, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Bum-Suk LEE, Eung-Sang LEE, Gi-Chang PARK, Jong-Jin KIM, Chan-Youn PARK
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Publication number: 20110018572Abstract: A semiconductor device test system is disclosed. The semiconductor device test system extends driver- and comparator-functions acting as important functions of a test header to an external part (e.g., a HIFIX board) of the test header, such that it can double the productivity of a test without upgrading the test header. The semiconductor device test system includes a test header for testing a semiconductor device by a test controller, and a HIFIX board for establishing an electrical connection between the semiconductor device and the test header, and including a Device Under Test (DUT) test unit which processes a read signal generated from the semiconductor device by making one pair with a driver of the test header and transmits the processed read signal to the test header.Type: ApplicationFiled: October 17, 2008Publication date: January 27, 2011Applicant: INTERNATIONAL TRADING & TECHNOLOGY CO., LTD.Inventors: Kyung-hun Chang, Se-kyung Oh, Eung-sang Lee
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Patent number: 7830478Abstract: An LCD device includes a lower panel having a first substrate; an organic layer formed on the first substrate; a trans-reflection layer formed on the organic layer and having a reflection area reflecting a portion of incidence light from exterior and a transmission area transmitting other portion of the incidence light; color filters formed on the trans-reflection layer; an overcoating layer formed on the color filters; and a common electrode formed on the overcoating layer. A portion of the overcoating layer corresponding to the reflection area is thicker than a portion of the overcoating layer corresponding to the transmission area. The LCD device also includes an upper panel including a second substrate facing the first substrate with a predetermined gap; thin film transistors formed on the second substrate; and pixel electrodes connected to the thin film transistors; and a liquid crystal layer disposed between the lower and upper panels.Type: GrantFiled: May 10, 2005Date of Patent: November 9, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Eung-Sang Lee, Ho-Jung Lee, Akira Hirai, Bong-Ju Kim, Yong-Je Jeon, Sang-Woo Park
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Patent number: 7737911Abstract: A display apparatus includes first and second display panels, a driver chip and a first flexible printed circuit. The first display panel displays a first image in response to first driving signals. The second display panel displays a second image in response to second driving signals. The driver chip is disposed between the first and second display panels, and the driver chip provides the first and second driving signals to the first and second display panels. The first flexible printed circuit is disposed between the first and second display panels, and the first flexible printed circuit applies the second driving signal generated from the driver chip to the second display panel. Therefore, an electrical resistance is reduced, so that a signal delay is prevented to enhance display qualities.Type: GrantFiled: January 7, 2005Date of Patent: June 15, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Joo Park, Eung-Sang Lee, Jin-Hyuk Yun
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Publication number: 20080211732Abstract: A driver chip for controlling a high-resolution display panel is presented. The driver chip is not much larger than a conventional driver chip that is currently used for lower resolution display panels. The driver chip applies data signals to the data lines of the display panel and gate control signals to a gate driver that is formed in the peripheral region of the display panel. The gate driver, which may be made of amorphous silicon TFTs, generates gate signals in response to the gate control signals from the driver chip and applies the gate signals to gate lines. Since the driver chip of the invention controls more gate lines and data lines than a conventional chip of about the same size, the driver chip may be easily adapted for display devices having multiple panels. Where multiple panels are used, the panels may be scanned simultaneously or sequentially.Type: ApplicationFiled: May 13, 2008Publication date: September 4, 2008Inventors: Young-Bae Jung, Won-Kyu Lee, Jin Jeon, Ji-Suk Lim, Min-Kyung Jung, Eung-Sang Lee, Won-Seok Ma
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Patent number: 7385598Abstract: A driver chip for controlling a high-resolution display panel is presented. The driver chip is not much larger than a conventional driver chip that is currently used for lower resolution display panels. The driver chip applies data signals to the data lines of the display panel and gate control signals to a gate driver that is formed in the peripheral region of the display panel. The gate driver, which may be made of amorphous silicon TFTs, generates gate signals in response to the gate control signals from the driver chip and applies the gate signals to gate lines. Since the driver chip of the invention controls more gate lines and data lines than a conventional chip of about the same size, the driver chip may be easily adapted for display devices having multiple panels. Where multiple panels are used, the panels may be scanned simultaneously or sequentially.Type: GrantFiled: June 21, 2004Date of Patent: June 10, 2008Assignee: Samsung Electronics, Co., Ltd.Inventors: Young-Bae Jung, Won-Kyu Lee, Jin Jeon, Ji-Suk Lim, Min-Kyung Jung, Eung-Sang Lee, Won-Seok Ma
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Publication number: 20060238472Abstract: A driver of a display device is provided. The driver for a display device includes a signal controller receiving first and second input image data, converting the first input image data into first output image data having a grayscale higher than that of the first input image data and converting the second input image data into second output image data having a grayscale lower than that of the second input image data; and a data driver converting the first and second output image data received from the signal controller into first and second data voltages and applying the first and second data voltages to corresponding pixels, respectively.Type: ApplicationFiled: March 20, 2006Publication date: October 26, 2006Inventors: Eung-Sang Lee, Byoung-Suk Kim, Myeong-Su Kim
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Publication number: 20060164354Abstract: A display device includes a display panel and a voltage generating part. The display panel includes a switching element, a main pixel section, a coupling capacitor and a sub pixel section. The main pixel section is electrically connected to the switching element. The coupling capacitor has a first end electrically connected to the switching element. The sub pixel section is electrically connected to a second end of the coupling capacitor. The voltage generating part controls data voltages corresponding to a gray-scale in a range from a low gray-scale to a high gray-scale that corresponds to a saturation voltage of the sub pixel section for displaying an image. The data voltages are applied to the display panel. Therefore, the viewing angle and the luminance are improved.Type: ApplicationFiled: October 31, 2005Publication date: July 27, 2006Inventors: Eung-Sang Lee, Byoung-Suk Kim
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Patent number: 7053407Abstract: Disclosed are a liquid crystal display device and a method for manufacturing the same, in which wirings connected between pads and an integrated circuit is protected from being corroded. A pixel array is formed on a display region of a substrate. A plurality of pads are formed on a non-display region of the substrate. An integrated circuit is formed on the non-display region of the substrate and connected to the pads to generate a signal for operating the pixel array. Conductive barrier layers separated from each of the pads are formed on peripheral portions of the pads connected to the integrated circuit. The conductive barrier layers have electric potential equivalent to that of each of the pads in accordance with internal connections of the integrated circuit. When bumps of the integrated circuit and the pads are attached to each other, the conductive barrier layers prevent the pads and the wirings connected to the pads from being corroded.Type: GrantFiled: July 9, 2004Date of Patent: May 30, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Won-Seok Ma, Eung-Sang Lee, Young-Bae Jung, Won-Kyu Lee
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Publication number: 20050248703Abstract: An LCD device includes a lower panel having a first substrate; an organic layer formed on the first substrate; a trans-reflection layer formed on the organic layer and having a reflection area reflecting a portion of incidence light from exterior and a transmission area transmitting other portion of the incidence light; color filters formed on the trans-reflection layer; an overcoating layer formed on the color filters; and a common electrode formed on the overcoating layer. A portion of the overcoating layer corresponding to the reflection area is thicker than a portion of the overcoating layer corresponding to the transmission area. The LCD device also includes an upper panel including a second substrate facing the first substrate with a predetermined gap; thin film transistors formed on the second substrate; and pixel electrodes connected to the thin film transistors; and a liquid crystal layer disposed between the lower and upper panels.Type: ApplicationFiled: May 10, 2005Publication date: November 10, 2005Inventors: Eung-Sang Lee, Ho-Jung Lee, Akira Hirai, Bong-Ju Kim, Yong-Je Jeon, Sang-Woo Park
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Publication number: 20050219150Abstract: A display apparatus includes first and second display panels, a driver chip and a first flexible printed circuit. The first display panel displays a first image in response to first driving signals. The second display panel displays a second image in response to second driving signals. The driver chip is disposed between the first and second display panels, and the driver chip provides the first and second driving signals to the first and second display panels. The first flexible printed circuit is disposed between the first and second display panels, and the first flexible printed circuit applies the second driving signal generated from the driver chip to the second display panel. Therefore, an electrical resistance is reduced, so that a signal delay is prevented to enhance display qualities.Type: ApplicationFiled: January 7, 2005Publication date: October 6, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-Joo Park, Eung-Sang Lee, Jin-Hyuk Yun
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Publication number: 20050151918Abstract: A display apparatus includes first and second display panels, a driver chip and a flexible printed circuit board. The driver chip disposed on the first display panel provides the first display panel with first and second driving signals. The flexible pcb electrically connects the first and second display panels to transfer the first and second driving signals to the second display panel. Each of the first and second display panels includes lower and upper substrates, a liquid crystal interposed between the lower and upper substrates, a combining member combining the lower and upper substrates and has an opening portion formed between sides of the lower and upper substrates, and a sealing member sealing the opening portion. By using a single chip to drive both LCD panels, both size reduction and yield/productivity increase are achieved.Type: ApplicationFiled: January 7, 2005Publication date: July 14, 2005Inventors: Jin-Hee Park, Eung-Sang Lee
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Patent number: 6900120Abstract: Disclosed are a liquid crystal display device and a method for manufacturing the same, in which wirings connected between pads and an integrated circuit is protected from being corroded. A pixel array is formed on a display region of a substrate. A plurality of pads are formed on a non-display region of the substrate. An integrated circuit is formed on the non-display region of the substrate and connected to the pads to generate a signal for operating the pixel array. Conductive barrier layers separated from each of the pads are formed on peripheral portions of the pads connected to the integrated circuit. The conductive barrier layers have electric potential equivalent to that of each of the pads in accordance with internal connections of the integrated circuit. When bumps of the integrated circuit and the pads are attached to each other, the conductive barrier layers prevent the pads and the wirings connected to the pads from being corroded.Type: GrantFiled: July 9, 2004Date of Patent: May 31, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Won-Seok Ma, Eung-Sang Lee, Young-Bae Jung, Won-Kyu Lee
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Publication number: 20050030254Abstract: A driver chip for controlling a high-resolution display panel is presented. The driver chip is not much larger than a conventional driver chip that is currently used for lower resolution display panels. The driver chip applies data signals to the data lines of the display panel and gate control signals to a gate driver that is formed in the peripheral region of the display panel. The gate driver, which may be made of amorphous silicon TFTs, generates gate signals in response to the gate control signals from the driver chip and applies the gate signals to gate lines. Since the driver chip of the invention controls more gate lines and data lines than a conventional chip of about the same size, the driver chip may be easily adapted for display devices having multiple panels. Where multiple panels are used, the panels may be scanned simultaneously or sequentially.Type: ApplicationFiled: June 21, 2004Publication date: February 10, 2005Inventors: Young-Bae Jung, Won-Kyu Lee, Jin Jeon, Ji-Suk Lim, Min-Kyung Jung, Eung-Sang Lee, Won-Seok Ma
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Publication number: 20040252267Abstract: Disclosed are a liquid crystal display device and a method for manufacturing the same, in which wirings connected between pads and an integrated circuit is protected from being corroded. A pixel array is formed on a display region of a substrate. A plurality of pads are formed on a non-display region of the substrate. An integrated circuit is formed on the non-display region of the substrate and connected to the pads to generate a signal for operating the pixel array. Conductive barrier layers separated from each of the pads are formed on peripheral portions of the pads connected to the integrated circuit. The conductive barrier layers have electric potential equivalent to that of each of the pads in accordance with internal connections of the integrated circuit. When bumps of the integrated circuit and the pads are attached to each other, the conductive barrier layers prevent the pads and the wirings connected to the pads from being corroded.Type: ApplicationFiled: July 9, 2004Publication date: December 16, 2004Inventors: Won-Seok Ma, Eung-Sang Lee, Young-Bae Jung, Won-Kyu Lee
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Publication number: 20040248333Abstract: Disclosed are a liquid crystal display device and a method for manufacturing the same, in which wirings connected between pads and an integrated circuit is protected from being corroded. A pixel array is formed on a display region of a substrate. A plurality of pads are formed on a non-display region of the substrate. An integrated circuit is formed on the non-display region of the substrate and connected to the pads to generate a signal for operating the pixel array. Conductive barrier layers separated from each of the pads are formed on peripheral portions of the pads connected to the integrated circuit. The conductive barrier layers have electric potential equivalent to that of each of the pads in accordance with internal connections of the integrated circuit. When bumps of the integrated circuit and the pads are attached to each other, the conductive barrier layers prevent the pads and the wirings connected to the pads from being corroded.Type: ApplicationFiled: July 9, 2004Publication date: December 9, 2004Inventors: Won-Seok Ma, Eung-Sang Lee, Young-Bae Jung, Won-Kyu Lee
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Patent number: 6774969Abstract: Disclosed are a liquid crystal display device and a method for manufacturing the same, in which wirings connected between pads and an integrated circuit is protected from being corroded. A pixel array is formed on a display region of a substrate. A plurality of pads are formed on a non-display region of the substrate. An integrated circuit is formed on the non-display region of the substrate and connected to the pads to generate a signal for operating the pixel array. Conductive barrier layers separated from each of the pads are formed on peripheral portions of the pads connected to the integrated circuit. The conductive barrier layers have electric potential equivalent to that of each of the pads in accordance with internal connections of the integrated circuit. When bumps of the integrated circuit and the pads are attached to each other, the conductive barrier layers prevent the pads and the wirings connected to the pads from being corroded.Type: GrantFiled: August 14, 2002Date of Patent: August 10, 2004Assignee: Samsung Electronics Co. Ltd.Inventors: Won-Seok Ma, Eung-Sang Lee, Young-Bae Jung, Won-Kyu Lee