Patents by Inventor Kee-Han Uh

Kee-Han Uh 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).

  • Patent number: 8587511
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a plurality of pixels and a plurality of sensing parts. Each of the sensing parts generates an output signal containing location information in response to an input signal. The location information indicates a location where the input signal is inputted. The second substrate is connected to the first substrate. The second substrate faces the first substrate. The liquid crystal layer is interposed between the first substrate and the second substrate. The liquid crystal display device needs no additional touch panel, so that no air space exists between the liquid crystal display panel and the touch panel. Therefore, a display quality is enhanced.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: November 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Sang Park, Kee-Han Uh, Hyung-Guel Kim, Jong-Hwan Cho, Sang-Jin Park, Jae-Hoon Jung, Young-Bae Jung
  • Publication number: 20130286462
    Abstract: Provided is a flexible display device including a display body having flexibility; an actuator for changing and driving the display body; and an initial shape forming substrate for maintaining an initial state of the display body before the display body is changed and driven. The flexible display device allows a user to exactly control a change state of the flexible display device by driving the actuator and to decrease power consumption for changing and driving the flexible display device. Thus, by using the flexible display device, user convenience can be improved and the flexible display device can be driven with low power consumption.
    Type: Application
    Filed: June 26, 2013
    Publication date: October 31, 2013
    Inventors: Yong-Seok YEO, Kee-Han UH UH
  • Publication number: 20130278559
    Abstract: In a touch sensible display device, a first sensing unit is connected to a row sensor data line and outputs a first sensing signal according to a touch, and a second sensing unit is connected to a column sensor data line and outputs a second sensing signal according to the touch. A sensing signal processor alternately applies a reset voltage to the row sensor data line and the column sensor data line and generates a sensing data signal according to the first sensing signal and the second sensing signal, and a touch determiner processes a sensing data signal to generate touch information.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 24, 2013
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Man-Seung Cho
  • Patent number: 8547338
    Abstract: A display panel includes a plurality of pixels; a plurality of detection units formed in row and column directions that generate an element output signal when the display panel is touched; a detection signal processor that generates detection data based on the element output signal; and a touch determination unit that classifies the detection data in a row or column direction, that converts a row or column coordinate of a touch position or sustains a previous coordinate by comparing a reference value of each direction with the detection data, and that determines whether the touch has occurred according to the conversion number of the row or column coordinate. When the screen is continuously touched along a row or column direction, the touch or lack thereof and its position can be accurately determined by using the previous touch position information as current touch position information.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: October 1, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Woung Park, Young-Ok Cha, Kee-Han Uh, Joo-Hyung Lee
  • Patent number: 8514163
    Abstract: In a display apparatus and a method for driving the display apparatus, the display apparatus includes a display panel and a gate driving part. The display panel has a gate line, and a gate driving part has a plurality of stages and a plurality of signal lines. At least one of the stages includes a transferring stage sequentially driving the stage, and an output stage partially driving the gate line, in response to a signal outputted from the transferring stage and a driving area selection signal. Accordingly, the display apparatus is partially driven, so that current consumption may be decreased, the display apparatus may be more safely driven, and a position, a size and the number of a non-display area may be more easily controlled.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Jin Pak, Chang-Hyeon Shin, Joo-Seok Yeom, Myung-Woo Lee, Hyung-Guel Kim, Kee-Han Uh
  • Patent number: 8471827
    Abstract: In a touch sensible display device, a first sensing unit is connected to a row sensor data line and outputs a first sensing signal according to a touch, and a second sensing unit is connected to a column sensor data line and outputs a second sensing signal according to the touch. A sensing signal processor alternately applies a reset voltage to the row sensor data line and the column sensor data line and generates a sensing data signal according to the first sensing signal and the second sensing signal, and a touch determiner processes a sensing data signal to generate touch information.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 25, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Man-Seung Cho
  • Patent number: 8395575
    Abstract: A liquid crystal display includes a first panel, a second panel facing the first panel and spaced apart from the first panel, a liquid crystal layer disposed between the first panel and the second panel, a variable capacitor having a capacitance that varies by a touch and generating a control voltage that has a magnitude depending on the capacitance, and a sensing element disposed on the second panel and generating a sensing signal based on the control voltage.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Jong-Woung Park, Sang-Jin Park
  • Patent number: 8378991
    Abstract: A method of detecting a touch position and a touch panel for performing the method are disclosed. In the above-mentioned method, a plurality of scan signals is sequentially supplied to a plurality of first sensor lines arranged in a first direction. Then, at least one of the scan signals is analyzed based on touch events, which is transferred from the first sensor lines to a plurality of second sensor lines arranged in a second direction substantially across to the first direction, and then at least one of touch positions is detected. Therefore, a plurality of scan signals is sequentially applied to the first sensor lines in the first direction, so that a plurality of touch events is simultaneously detected so that a plurality of touch positions may be detected.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: February 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Jeon, Hyung-Guel Kim, Kee-Han Uh
  • Publication number: 20130002970
    Abstract: Provided are a liquid crystal lens which controls an optical path, and a display including the liquid crystal lens. The liquid crystal lens includes a first and a second electrode which face each other, a liquid crystal layer interposed between the first electrode and the second electrode and has flat top and bottom surfaces, and a dielectric layer interposed between the second electrode and the liquid crystal layer, where the dielectric layer includes a first and a second dielectric sub-layer, the first dielectric sub-layer made of a material having a different dielectric constant from that of the second dielectric sub-layer, the first dielectric sub-layer includes one or more unit patterns, a surface of each of the unit patterns includes a plurality of flat sections, and a height of each of the unit patterns in a first flat section is different from the height thereof in a second flat section.
    Type: Application
    Filed: November 7, 2011
    Publication date: January 3, 2013
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Jong-In Baek, Kee-Han Uh
  • Patent number: 8314906
    Abstract: A phase delay element includes a brightness enhancement layer intermediate a reflection layer and an artificial light. The brightness enhancement layer is defined by a first surface and an opposite second surface. The first surface faces the reflection layer. A first light from the artificial light is incident on the second surface. A phase of the first light is delayed by about 1/4 phase (?/4) so that a second light is emitted from the first surface toward the reflection layer. The second light is reflected from the reflection layer so that a third light is emitted from the reflection layer toward the first surface. A phase of the third light is delayed by about 1/4 phase (?/4) so that a fourth light is emitted from the second surface. Therefore, a portion of the artificial light, which is reflected from the reflection layer, is recycled to improve a luminance of an LCD apparatus.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: November 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Akira Hirai, Jin-Hyuk Yun, Kee-Han Uh, Min-Soo Park
  • Patent number: 8305340
    Abstract: The present invention relates to a touch sensitive display device, the display device including a display panel unit, a sensing unit formed on the display panel unit, receiving a sensor control signal, and generating a sensor data signal based on a touch exerted on the display panel unit, an output unit generating a sensing signal based on the sensor data signal from the sensing unit, and a compensation unit adjusting the sensor control signal such that the sensing signal is bounded in a predetermined range.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: November 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Woung Park, Joo-Hyung Lee, Kee-Han Uh, Young-Jun Choi, Man-Seung Cho
  • Patent number: 8300026
    Abstract: A display device according to an embodiment of the present invention includes: a display panel; a plurality of pixels disposed on the display panel; a plurality of sensor data lines disposed on the display panel and disposed between two adjacent pixels; and a plurality of sensing units disposed on the display panel and disposed between two adjacent pixels.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: October 30, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Hyung Lee, Hyung-Guel Kim, Kee-Han Uh, Sang-Jin Pak
  • Patent number: 8228310
    Abstract: A display device includes a display panel, a plurality of pixels formed on the display panel, a plurality of sensing units formed on the display panel and generating sensor output signals in response to a touch exerted on the display panel, a sensing signal processor receiving and processing an analog sensor data signal originated from the sensor output signals to generate a digital sensor data signal, a first touch-determination unit detecting whether a touch exists based on the digital sensor data signal for a plurality of frames, and operating in a power saving mode, and a second touch-determination unit detecting whether and where a touch exists based on the digital sensor data signal for the plurality of frames, and operating in a normal mode. The display device includes hardwired logic units for detecting the touch, it detects the touch using the hardwired logic units in the power saving mode and converts the operation mode to the normal mode when the touch is detected, thus reducing power consumption.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Hyung Lee, Kee-Han Uh, Jong-Woung Park
  • Patent number: 8212752
    Abstract: A method of economically manufacturing display devices having a matrix of drivable pixels arranged in rows and columns arranged to be driven by IC drivers, including the steps of including a plurality of sensor signal lines in the display device that are selectively connectable to certain of the pixel rows, a plurality of sensor signal lines selectively connectable to certain of the pixel columns, transmitting test signals to test predetermined ones of the rows and columns of pixels, and connecting pixel driving circuits to those display devices exhibiting uniform pixel brightness in response to the test signals.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: July 3, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Woo Lee, Joo-Hyung Lee, Sang-Jin Pak, Kee-Han Uh
  • Publication number: 20120162586
    Abstract: An apparatus for manufacturing encapsulated liquid crystals including at least one first flow duct configured to have liquid crystals flow therethrough, at least one second flow duct configured to have encapsulation film materials flow therethrough, a third flow duct configured to have an inflow portion connected to an outflow portion of the first flow duct and an outflow portion of the second flow duct and to have liquid crystal droplets in which the liquid crystals and the encapsulation film materials are mixed flow therethrough, and a curing machine configured to manufacture the encapsulated liquid crystals by curing the liquid crystal droplets.
    Type: Application
    Filed: August 17, 2011
    Publication date: June 28, 2012
    Applicants: HOSEO UNIVERSITY ACADEMIC COOPERATION FOUNDATION, SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Jong-In BAEK, Kee-Han UH, Jae-Hyun KIM, Chul Gyu JHUN, Won-Sang PARK, Jae-Ik LIM
  • Patent number: 8193478
    Abstract: In a light sensor test unit, a test circuit is built in a display panel and connected to an output node of a light sensor which senses an intensity of an external light. When external light having a predetermined intensity is provided to the light sensor, the test circuit outputs a driving signal in response to a sensing signal output from the output node. A test pixel part includes pixels selected from a plurality of pixels arranged in the display panel and receives the driving signal from the test circuit to display a gray-scale corresponding to the driving signal. A brightness measurer measures a brightness corresponding to the gray-scale displayed in the test pixel part to compare the measured brightness with a predetermined brightness, thereby testing whether the light sensor built in the display panel is normally operated.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Jin Pak, Kee-Han Uh, Ho-Suk Maeng, Man-Seung Cho, Young-Ok Cha
  • Patent number: 8188979
    Abstract: A display device includes: a plurality of sensing data lines; a plurality of sensing units that output sensing signals through the plurality of sensing data lines; a signal selector that selects one sensing signal among the plurality of sensing signals; an automatic voltage adjusting unit that, when one sensing signal is selected by the signal selector, performs a controlling operation so as to allow a magnitude of the selected sensing signal to be in a predetermined range; and a voltage generator that adjusts the magnitude of the voltage applied to the sensing data lines based on a control signal output from the automatic voltage adjusting unit. According to the voltage adjusting operation, the sensing signal output through the sensing data line is always in an appropriate range. As a result, the touch determining operation on the sensing units can be accurately performed, so that it is possible to improve reliability of the sensing units.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: May 29, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Man-Seung Cho, Hyung-Guel Kim, Kee-Han Uh, Joo-Hyung Lee, Jong-Woung Park, Myung-Woo Lee, Young-Ok Cha
  • Patent number: 8174505
    Abstract: A touch screen display device and a driving method of the same are provided.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: May 8, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Woung Park, Sung-Woo Lee, Kee-Han Uh
  • Patent number: 8144114
    Abstract: A liquid crystal display includes a substrate, first and second pixel groups, a first gate line group comprising first gate lines connected to the pixels of the first pixel group, a second gate line group comprising second gate lines connected to the pixels of the second pixel group, a first data line group connected to the pixels of the first pixel group and comprising first data lines extending in a second direction, and a second data line group connected to the pixels of the second pixel group and comprising second data lines extending in the second direction. Each data line of the first data line group and each data line of the second data line group are connected to each other, and the first and second pixel groups are adjacent in the first direction.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: March 27, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Jeon, Kee-Han Uh
  • Patent number: 8134535
    Abstract: A display device including a plurality of sensing units, a plurality of first sensing signal lines, a first output unit, a first sensing output line, and a sensing signal processor. The sensing units are arranged in a matrix and generate a detection signal according to user contact. The first sensing signal lines transfer the detection signal of the sensing unit arranged in a first direction. The second sensing signal lines transfer the detection signal of the sensing units arranged in a second direction that is perpendicular to the first direction. The first output unit sequentially outputs the detection signals of the first sensing signal lines. The first sensing output line extends in the second direction for transferring the detection signal of the first output unit. The sensing signal processor determines whether contact is made or not by processing the detection signals of the first sensing signal lines and the second sensing signal lines.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: March 13, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Young Choi, Hyung-Guel Kim, Kee-Han Uh, Jin Jeon