Defect Correction Or Compensation Patents (Class 349/192)
  • Publication number: 20110261287
    Abstract: A liquid crystal display device and a method of manufacturing the same, the device including a liquid crystal display panel, the liquid crystal display panel including substrates facing each other and a liquid crystal layer therebetween; a backlight unit below the liquid crystal display panel, the backlight unit being for emitting light toward the liquid crystal display panel; a filling that fills defect holes on surfaces of the substrates, which surfaces are relatively remote from the liquid crystal layer, the filling having horizontally even surfaces with respect to the surfaces of the substrates, and a cover member disposed over the defect holes filled with the filling.
    Type: Application
    Filed: April 22, 2011
    Publication date: October 27, 2011
    Inventor: Do-Hyun KIM
  • Patent number: 8045084
    Abstract: A display device includes a signal line formed on a substrate, a repair line formed on the substrate crossing and insulated from the signal line, and a first redundancy conductive pattern formed on a first region of the substrate where the signal line crosses the repair line, wherein the first redundancy conductive pattern is insulated from the signal line and the repair line.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bum Ki Baek, Dong Il Son
  • Patent number: 8045072
    Abstract: A thin film transistor substrate of a LCD device and a fabricating method thereof are disclosed for simplifying a fabricating process and enlarging a capacitance value of a storage capacitor without any reduction of aperture ratio. The LCD device includes: a double-layered gate line having a first transparent conductive layer and a second opaque conductive layer, the second opaque conductive layer have a step coverage; a gate insulation layer film on the gate line; a data line crossing the gate line to define a pixel region; a TFT connected to the gate line and the data line; a pixel electrode connected to the TFT via a contact hole of a protective film on the TFT; and a storage capacitor overlapping the pixel electrode and having a lower storage electrode formed of the first transparent conductive layer.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: October 25, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Byung Chul Ahn
  • Patent number: 8045132
    Abstract: A method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, irradiating at least part of the defective pixel outside the dust with laser light while the dust is not substantially irradiated with the laser light. Alternatively, a method of repairing a liquid crystal panel by irradiating a defective pixel of the liquid crystal panel with laser light, comprises: in a defective pixel including a dust, determining a non-irradiation area including the dust and an irradiation area not including the dust, and irradiating at least part of the irradiation area with laser light while the non-irradiation area is not irradiated with the laser light.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: October 25, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Kawada, Hiroshi Ito
  • Patent number: 8030650
    Abstract: A pixel structure comprises at least two scan and data lines. The scan and data lines substantially intersects one another to form at least one region therein. The pixel structure further comprises at least one thin film transistor, at least one passivation layer, at least one defect detection pattern, and at least one pixel electrode. The pixel electrode is disposed on the passivation layer and electrically connected to the thin film transistor via an opening of the passivation layer. The defect detection pattern is disposed in the region to detect whether any residue remains therebelow.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 4, 2011
    Assignee: AU Optronics Corp.
    Inventors: Yu-Hsin Lin, Chung-Chih Cheng
  • Patent number: 8031321
    Abstract: An LCD device and a method for manufacturing the same is disclosed, in which it is possible to correct a problem of insufficient or excessive supply of liquid crystal in an LCD device by controlling an amount of liquid crystal. The method includes preparing a liquid crystal cell comprised of a first substrate, a second substrate, a liquid crystal layer between the first and second substrates, and a first sealant formed in the periphery of the liquid crystal layer between the first and second substrates; measuring an amount of liquid crystal provided to the inside of liquid crystal cell; forming an inlet for liquid crystal in the first sealant; and regulating the amount of liquid crystal by supplying or discharging the liquid crystal through the inlet; and sealing the inlet.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: October 4, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Bum Soo Kim, Byoung Chul Choi, Byoung-Mok Ha, Chang Bo Shim, Chang-Soo Na, Cheol Joo Moon, Chong Chan Eun, Gu-Yun Bok, Hae Joon Son, Heung-Sun Kim, Hong Seok Lee, Hyung Jin Park, Hyun-Ho Song, In Kyu Lee, Jae Chuon Ryu, Jae Ho Shin, Jae Min Jong, Je Hyun Kim, Jeong-Ho Lee, Jeong-Joon Lee, Jong Won Kim, Jun Beom Cho, Jun Young Yu, Jung Seung Kim, Jung-Deog Yoo, Jung-Sik Kim, Se Joon Baek, Seung-Bum Lee, Seung-Won Moon, Sung-Mo Koo, Tae Man Kim, Young Phil Bang, Myoung Su Yang, Jae Kyun Lee, Hyun-Seok Jang, Jung Il Lee
  • Patent number: 8031314
    Abstract: A color liquid crystal display panel includes a first substrate having data lines and scan lines arranged in a matrix, a second substrate having four-color filter segments to provide four sub-pixels forming a pixel, a frame-shaped sealing material through which the first and second substrates are bonded together, and a liquid crystal sealed in a gap surrounded by the first and second substrates and the sealing material. The data lines and the scan lines are drawn out of the sealing material and arranged as inspection data lines having a predetermined length. Among the inspection data lines LR, LG, LB, LC corresponding to the four-color filter segments, at least one pair of the inspection lines for two colors sandwich one inspection data line for one color and have identical lengths.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: October 4, 2011
    Assignee: Sony Corporation
    Inventor: Yoshiaki Aramatsu
  • Patent number: 8027014
    Abstract: The invention provides: an optical element that includes a birefringence functional layer constituted of a polymerizable liquid crystal material, in which the birefringence functional layer is formed directly or indirectly on a substrate, and in a post-process carried out thereafter, alignment and characteristics of the birefringence functional layer are not disturbed, with the result that a high quality birefringence control function can be exerted; a liquid crystal display device provided with the optical element; a method of evaluating a birefringence functional layer that is not disturbed in the alignment and physical properties by the post-process; and a method of producing the optical element.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: September 27, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Yuji Nakatsugawa
  • Patent number: 8023097
    Abstract: A liquid crystal panel 11 includes a pair of substrates 18, 19, liquid crystal 20 disposed between the substrates 18, 19, and alignment films 30, 36 provided on the opposed surfaces of the substrates 18, 19. After formation of the alignment film 30 or 36 is completed in a manufacturing process, it is checked by an inspection process whether a pinhole H is formed on the alignment film 30, 36, and further the position of the pinhole H is detected. Thereafter, an alignment film repair filler 50 is applied to the pinhole H by a repair process, so that the pinhole H is repaired.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: September 20, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noriaki Onishi, Kimitaka Ohhata, Jun Mikami
  • Patent number: 8018560
    Abstract: A liquid crystal display (LCD) device comprises a first substrate having a grooved surface profile; an alignment film layer of inorganic material formed on the grooved surface and having the grooved surface profile, the alignment film of inorganic material being aligned in response to an ion beam incident to the grooved surface in a direction parallel to a groove direction; a second substrate aligned opposite the first substrate for forming a plurality of LCD cells having liquid crystal (LC) material deposited therein, wherein LC molecules align parallel to the grooves for enhanced LCD performance.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: September 13, 2011
    Assignee: International Business Machines Corporation
    Inventors: Minhua Lu, Ke-Hsiung Yang
  • Patent number: 8013876
    Abstract: This invention relates to a flat panel display device that is adaptive for optimizing data, which are to be displayed in a panel defect area, in used of a compensation value of a compensation circuit as well as compensating defect pixels by a repair process, and a method of controlling a picture quality thereof. A flat panel display device according to an embodiment of the present invention includes a display panel; a memory which stores a first compensation data, a second compensation data and a third compensation data; a first compensation part; a second compensation part; a third compensation part; and a driver for driving the display panel in use of the data modulated by the first to third compensation parts.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: September 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: In Jae Chung, Deuk Su Lee, Jong Hee Hwang
  • Patent number: 8013974
    Abstract: A thin film transistor substrate and a fabricating method that includes an opening hole that separates a gate shorting line connected to a gate shorting bar used upon a lighting-inspecting of a gate line into an odd and an even gate shorting line is provided.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: September 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Ji Hyun Jung
  • Patent number: 8013965
    Abstract: A liquid crystal display device is disclosed, which comprises an upper substrate, a lower substrate, and a liquid crystal layer. The lower substrate has several pixel electrodes, metal lines, and switch elements thereon. Each switch element comprises a source electrode, a drain electrode, a gate electrode, and an opening between the source electrode and the drain electrode. A passivation layer covering the surface of the source electrode and the drain electrode forms two inclined planes separately on two sides. The two inclined planes face each other and are locating on a kink or step of the source electrode and drain electrode. The inclined planes also contact each other at the upper side of the opening. The inclinations of the inclined planes to the lower substrate are in a range from 5 to 50 degrees.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: September 6, 2011
    Assignee: AU Optronics Corporation
    Inventors: Yeong-Feng Wang, Liang-Pin Yu, Chih-Liang Liao, Chien-Hung Chen, I-Hua Ho, Yi-Wei Lee
  • Patent number: 7995184
    Abstract: A display substrate includes a signal line formed on a substrate, a connection pad receiving a driving signal from the signal line, at least one repair line formed along an outer periphery of the substrate, a first auxiliary repair line overlapping the signal line at a first position with an insulating layer disposed therebetween, a second auxiliary repair line overlapping the signal line at a second position with the insulating layer disposed therebetween, and a connection line connecting the second auxiliary repair line to the at least one repair line.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duk Sung Kim, Sung Haeng Cho
  • Patent number: 7995156
    Abstract: A display substrate includes a substrate, signal lines and test lines. The substrate includes a pixel region where pixels are disposed, a buffer region surrounding the pixel region and a grinding region surrounding the buffer region. The signal lines pass through the buffer region from the grinding region to provide the pixels with a driving signal. The test lines are disposed on the grinding region and the buffer region, respectively, so that the test lines intersect the signal lines in a lattice structure. Each of the test lines is electrically connected to the signal lines of a first number calculated by dividing a second number of the signal lines by a third number of the test lines. Thus, the performance of the pixels used for displaying an image may be tested more precisely.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kun-Jong Lee, Chan-Hyang Lim, Min-Young Won, Won-Hee Lee, In-Cheol Song
  • Patent number: 7990486
    Abstract: An exemplary liquid crystal display panel (2) includes a plurality of gate lines (21), a plurality of data lines (22), a plurality of pixel regions, and a plurality of repair lines (24). Each pixel region is surrounded by two corresponding gate lines and two corresponding data lines, and each pixel region includes a pixel electrode (20). Each repair line is provided at a respective one of the pixel regions. Each repair line is a substantially rectangular-shaped ring, two opposite long sides of the ring are located at two opposite sides of a corresponding data line or a corresponding gate line between two corresponding adjacent pixel electrodes, two opposite short sides of the ring cross the corresponding data line or gate line, and the repair line is electrically isolated from the corresponding data line or gate line. A method for repairing the liquid crystal display panel is also provided.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: August 2, 2011
    Assignee: Chimei Innolux Corporation
    Inventors: Sheng-Hsien Cheng, Chien-Ting Lai
  • Patent number: 7978278
    Abstract: A display apparatus comprises a substrate, a first lead, a second lead and a third lead. The first lead and second lead are provided on the substrate and intersect at a first overlapping area. The third lead surrounds the first overlapping area where the first lead and second lead cross each other. The third lead intersects the first lead respectively at a second overlapping area and a third overlapping area.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: July 12, 2011
    Assignee: Hannstar Display Corporation
    Inventors: Yi Tse Lin, Hsu Ho Wu, Chia Hua Yu, Hui Fang Cheng
  • Patent number: 7973871
    Abstract: The present invention provides an active matrix substrate of comprising on the substrate: a plurality of scanning signal lines and data signal lines; a thin film transistor provided at an intersecting point of the signal lines and comprising a gate electrode connected to the scanning signal line, a source electrode connected to the data signal line; and a pixel electrode electrically connected to a drain electrode of the thin film transistor, wherein the active matrix substrate comprises a structure having an at least partly multilinear data signal line and an interconnection electrode for correction.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 5, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshifumi Yagi, Masanori Takeuchi, Toshihide Tsubata, Nobuyoshi Nagashima, Akira Yamaguchi
  • Publication number: 20110146066
    Abstract: A display substrate includes a signal line formed on a substrate, a connection pad receiving a driving signal from the signal line, at least one repair line formed along an outer periphery of the substrate, a first auxiliary repair line overlapping the signal line at a first position with an insulating layer disposed therebetween, a second auxiliary repair line overlapping the signal line at a second position with the insulating layer disposed therebetween, and a connection line connecting the second auxiliary repair line to the at least one repair line.
    Type: Application
    Filed: February 25, 2011
    Publication date: June 23, 2011
    Inventors: DUK SUNG KIM, Sung Haeng Cho
  • Patent number: 7956977
    Abstract: A liquid crystal display includes: a first substrate and a second substrate; a liquid crystal layer filling between the first substrate and the second substrate; and a plurality of sealant observation windows arranged on the second substrate, wherein each sealant observation windows is an enclosed pattern formed by smooth curve; and a sealant covering a portion of sealant observation windows and surrounding the liquid crystal layer to bond the first substrate and the second substrate. In the present invention, those sealant observation windows can avoid the condition of unequal cell gap and increase the convenience of monitoring the spreading condition of the sealant.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: June 7, 2011
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hsiao-Fen Chen, Chen-Chi Lin, Hung-Cheng Lin
  • Patent number: 7950132
    Abstract: Disclosed is an integrated device which can peel a protective film from a board assembly and mount the board assembly on a backlight unit. The integrated peeling and mounting device includes: an index rotary unit having a shaft for rotating heads facing in different directions; an alignment calibration unit for calibrating an aligned state of the board assembly and the backlight unit; and a mounting unit for mounting a board assembly adsorbed to a first head of the index rotary unit on the backlight unit.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: May 31, 2011
    Assignees: LG Display Co., Ltd., LG Electronics Inc.
    Inventors: Sungmin Kim, Yongjin Kim, Byungsu Chae, Youngjin Lee
  • Patent number: 7948602
    Abstract: A liquid crystal display and method for driving the same to prevent a repaired pixel from being a bright spot. The LCD panel includes a plurality of pixels, each pixel including: a pixel capacitor, a storage capacitor, and a thin film transistor (TFT) having a first electrode coupled to first terminals of the pixel capacitor and storage capacitor. Two different common voltages are applied to a second terminal of the pixel capacitor and a second terminal of the storage capacitor, respectively. The two different common voltages are DC voltages and an absolute difference between them is based on a value in a voltage range corresponding to a transmittance range which indicates a pixel in a dark state substantially and is determined according to a minimum transmittance and a maximum transmittance of the LCD panel.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: May 24, 2011
    Assignee: Chimei Innolux Corporation
    Inventor: Chao-Chun Chung
  • Patent number: 7948568
    Abstract: A display substrate includes a pixel electrode including a main electrode and a sub-electrode disposed apart from the main electrode and including an opening part. The display substrate includes a first switching device and a second switching device. The first switching device is connected to the main electrode. An extension electrode extends from the second switching device and overlaps the opening part. The extension electrode is connected to the sub-electrode via a contact part. According to the present invention, after a defective pixel is repaired, the repaired pixel operates normally.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hyun Park, Kyung-Wook Kim, Sung-Hwan Bae
  • Patent number: 7944516
    Abstract: A liquid crystal display device and its fabrication method may prevent occurrence of light leakage generated from the sides of a data line. A dummy pattern at sides of the data line with glass powder as an insulation film may simplify the repairing process. A method for fabricating a liquid crystal display device includes a gate electrode, a gate line, a dummy pattern and a first insulation film that are formed on a substrate. A switching element is formed on a portion of the gate electrode and includes a source electrode, a drain electrode and an active layer. A data line formed at a portion of the dummy pattern. A second insulation film is formed on the substrate and has a first contact hole that exposes a portion of the drain electrode. A pixel electrode is formed on the substrate and is electrically connected with the drain electrode through the first contact hole.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 17, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Kyoung Mook Lee, Jae Young Oh, Kye Chan Song
  • Patent number: 7932962
    Abstract: A liquid crystal display device includes a pixel electrode, a thin film transistor, a gate line electrically coupled to the pixel through the thin film transistor and a first auxiliary layer having a first connecting portion overlapped with the pixel electrode and a second connecting portion overlapped with the gate line. The pixel electrode is non-overlapped with the gate line and the first auxiliary layer is electrically insulated from the pixel electrode and the gate line. When a white defect occurs, the pixel electrode is electrically connected to the gate line through the first auxiliary layer thereby repairing the white defect as a black defect.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 26, 2011
    Assignee: Hannstar Display Corp.
    Inventors: Chang Ching Yeh, Te Cheng Chung, Ming Tien Lin
  • Publication number: 20110085105
    Abstract: A liquid crystal display includes a plurality of data lines and a plurality of pixels arranged in a matrix, wherein the plurality of pixels include a first pixel and a second pixel, and each of the first pixel and the second pixel includes a first subpixel electrode and a second subpixel electrode, a first switching element, a second switching element, a third switching element, and a voltage-changing capacitor, wherein a first source electrode on the first switching element and a second source electrode on the second switching element from the first pixel are connected to a data line, the first source electrode and the second source electrode of the second pixel are disconnected from the plurality of data lines, and the two terminals of the voltage-changing capacitor of the second pixel are shorted to each other.
    Type: Application
    Filed: March 24, 2010
    Publication date: April 14, 2011
    Inventors: Kyung-ho Park, Yoon-Jang Kim
  • Patent number: 7916266
    Abstract: A method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device includes injecting a liquid crystal into a liquid crystal receiving space. The liquid crystal receiving space is disposed between a first substrate, a second substrate that faces the first substrate, and a sealing member interposed between the first and second substrates. The method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device further includes reducing a thickness of the sealing member at a predetermined portion of the sealing member to form a repair region, and pressurizing the liquid crystal to break the sealing member at the repair region to discharge some of the liquid crystal from the liquid crystal receiving space, so as to adjust the amount of the liquid crystal in the liquid crystal receiving space. The method for adjusting an amount of liquid crystal in a liquid crystal display (LCD) device also includes resealing the broken repair region of the sealing member.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 29, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Chong Chan Eun, Sang Ho Park, Tae Man Kim, Jun Beom Cho, Chang Gun Song
  • Patent number: 7916109
    Abstract: A panel of a liquid crystal display panel with a plurality of pixels is disclosed, wherein each pixel comprises one switch, one pixel electrode and one floating line. The switch comprises a gate, a source, and two drains. The pixel electrode can be electrically connected to the switch through the drain. Besides, each floating conductive line and two drains of the same switch are crossed but electrically disconnected. Hence, the design of the dual drain (or dual source) illustrated above and the combined the technique of laser welding can be used to repair the source-drain leakage of the substrate of the liquid crystal display device.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: March 29, 2011
    Assignee: Au Optronics Corporation
    Inventors: Wen-Yi Shyu, Chun-Chang Chiu, Liang-Neng Chien
  • Patent number: 7916228
    Abstract: A thin film transistor array comprising a substrate, a plurality of scan lines, a plurality of data lines, a plurality of thin film transistors, a plurality of common lines, a plurality of top electrodes, a plurality of connection lines and a plurality of pixel electrodes is provided. Wherein, each thin film transistor is disposed in one of the pixel areas and driven through the corresponding scan line and data line. Each thin film transistor includes a gate, a source and a drain. The drain of the thin film transistor is electrically connected to the corresponding top electrode by the corresponding connection line. Besides, the drain of the thin film transistor is electrically connected to the pixel electrode, and a portion of the connection line is not covered by the pixel electrode.
    Type: Grant
    Filed: December 27, 2009
    Date of Patent: March 29, 2011
    Assignee: Au Optronics Corporation
    Inventor: Han-Chung Lai
  • Patent number: 7915810
    Abstract: A display device 10 including a supporting substrate 12, pixels arranged over the supporting substrate, and a member which is arranged on the light extraction side of a defective pixel 22b, the defective pixel being in a constantly non-lit state, the member being imparted with a light scattering property by the selective application of external energy. Preferably, disposed is a thermosensitive layer 24 which changes from a transparent state to a light scattering state when the layer is heated to a specified temperature or higher. An examination is performed for specifying the constantly non-lit defective pixel from among the pixels arranged over the supporting substrate. An external energy is selectively applied to at least one member arranged on the light extraction side of the defective pixel specified by the examination, thereby imparting the light scattering property to the member.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: March 29, 2011
    Assignee: Fujifilm Corporation
    Inventors: Masaru Kinoshita, Tasuku Satou
  • Patent number: 7916236
    Abstract: A display device has a pixel including a transmitting region to transmit light and a reflecting region to reflect external light. The display device includes: a transparent conductive film containing a first transparent conductive film forming a pixel electrode in the transmitting region, a second transparent conductive film provided as an upper layer of a reflecting electrode forming the reflecting region, and a connecting portion integrally formed with and connecting the first transparent conductive film and the second transparent conductive film; and a opaque conductive film provided as a lower layer of the transparent conductive film, and located below an area of the transparent conductive film including the connection portion.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: March 29, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventor: Katsuaki Murakami
  • Patent number: 7911552
    Abstract: A display substrate includes a signal line formed on a substrate, a connection pad receiving a driving signal from the signal line, at least one repair line formed along an outer periphery of the substrate, a first auxiliary repair line overlapping the signal fine at a first position with an insulating layer disposed therebetween, a second auxiliary repair line overlapping the signal line at a second position with the insulating layer disposed therebetween, and a connection line connecting the second auxiliary repair fine to the at least one repair line.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 22, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duk Sung Kim, Sung Haeng Cho
  • Publication number: 20110065349
    Abstract: The primary cause of degradation of a liquid crystal is the presence of trapped water within the liquid crystal, and the properties of a degraded liquid crystal can be recovered by removing the water from the degraded liquid crystal. A method for recovering the properties of a liquid crystal is disclosed to include a step of removing the trapped water.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY
    Inventors: WEI LEE, I-SHENG LIN
  • Patent number: 7893931
    Abstract: A shift register array includes a plurality of first shift registers, a second shift register, a first connection line, a second connection line, and a third connection line. A signal output terminal of each first shift register overlaps the first connection line and the third connection line without electric connection. The first connection line is connected to a signal input terminal of the second shift register. The second connection line is connected to a signal output terminal of the second shift register, and establishes a plurality of electric connection paths. When one of the first shift registers malfunctions, the corresponding connection points and overlapping points are cut or connected so that the malfunctioned first shift register can be replaced by the second shift register.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: February 22, 2011
    Assignee: Au Optronics Corp.
    Inventors: Chun-Chin Wei, Yen-Hsien Yeh, Shih Hsun Lo
  • Patent number: 7889311
    Abstract: An apparatus for testing a liquid crystal display (LCD) panel which is capable of easily attaching or detaching a large polarizer to/from a test board when testing a large LCD panel, the apparatus comprising a test board for outputting light to an LCD panel which is placed thereon, a polarizer fixing unit rotatably formed at the test board and having a groove in which a polarizer is inserted, and a stop formed at the test board to fix the polarizer fixing unit to a desired position.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: February 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Seung-Bum Lee
  • Patent number: 7889188
    Abstract: This invention relates to a flat panel display device that is adaptive for perfectly compensating a panel defect by performing an electrical compensation on pixels in a panel defect location, and a method of controlling a picture quality thereof. A flat panel display device according to an embodiment of the present invention includes a display panel which has a non-defect area and a panel defect area; a memory which stores a first compensation, a second compensation data, a third compensation data, a fourth compensation data, and a fifth compensation data; a compensation part; and a driver for driving the display panel in use of the data modulated by the compensation part.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: February 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Jong Hee Hwang
  • Patent number: 7883647
    Abstract: An optical substrate possesses a structured surface that enhances luminance or brightness and reduces the effects of structural defects on perceived image quality. User perceivable image cosmetic defects caused by manufacturing or handling, can be masked by introducing structural irregularities in the optical substrate, which may be non-facet flat sections or in-kind to the defects. Optical defects caused by non-facet flat sections in the prism structure of the optical substrate (e.g., flat-bottom valleys with a certain valley bottom thickness above the base layer, and/or flat-top peaks, and/or openings in the optical substrates that expose flat sections of underlying base layer) can be masked by providing distributed in-kind non-facet flat sections (e.g., flat-bottom valleys, and/or flat-top peaks, and/or openings exposing sections of underlying base layer), to diffuse the prominence of the original defects with the introduced irregularities.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: February 8, 2011
    Assignee: Ubright Optronics Corporation
    Inventors: Kong-Hua Wang, Craig Lin, Daniel Yaw-Chung Ko
  • Patent number: 7884893
    Abstract: Disclosed is a method of testing a liquid crystal display device enabling a quick test by determining a test of a liquid crystal panel according to a liquid crystal filling state of the liquid crystal panel. The method includes: checking a liquid crystal filling state of a liquid crystal panel for a defective liquid crystal filling state; and executing a test of a liquid crystal panel having a defective liquid crystal filling state. The process for testing a liquid crystal filling state may include detecting a dispensed amount of liquid crystal dropped using a liquid crystal dispensing apparatus or may include measuring the weight of liquid crystal dropped. Other methods of identifying the filling state of the liquid crystal panel may be used.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Gu-Yun Bok
  • Patent number: 7880857
    Abstract: An active matrix substrate includes a transistor, a pixel electrode connected with one of the current-flowing electrodes of the transistor, a storage capacitor wiring, a lead wiring extending from one of the current-flowing electrodes of the transistor, and a repair wiring extending from the storage capacitor wiring. The repair wiring overlaps a portion of the lead wiring with an insulating layer interposed therebetween. As a result, TFT defects (for example, a short circuit between a source electrode and a drain electrode) can be repaired, and performance of fast display and reduction in electric power consumption can be realized.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: February 1, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihide Tsubata, Yoshihiro Okada, Atsushi Ban, Toshinori Sugihara
  • Patent number: 7880856
    Abstract: A pixel unit including a pixel electrode, a scan electrode, a common voltage electrode, a data electrode and at least one redundancy electrode is provided. During the fabricating process of the pixel unit, if a particle is simultaneously located between any two of the pixel electrode, the scan electrode and the common voltage electrode, it would cause a short circuit between the two electrodes. The pixel unit can generate a cross-shaped defect signal at the location where a short circuit happens when the pixel unit undergoes an array test or a cell test. The user can thereby quickly locate the defect and repair it.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: February 1, 2011
    Assignee: Au Optronics Corporation
    Inventors: Chung-Hung Peng, Meng-ying Hsieh, Chi-Hung Lu, Chin-Fon Chen
  • Patent number: 7868994
    Abstract: A liquid crystal display device includes a first substrate and a second substrate facing each other, column spacers at designated areas of the second substrate, protrusions having a first height on the first substrate corresponding to portions of the column spacers, compensation patterns having a second height on the first substrate corresponding to the edges of the column spacers, the second height being lower than the first height, and a liquid crystal layer filling a gap between the first and second substrates.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: January 11, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Seoung Jin Park, Moo Hyoung Song
  • Patent number: 7868993
    Abstract: A method for repairing a defective cell of a liquid crystal panel includes: providing a liquid crystal panel including an upper array substrate with a black matrix and a pigment layer formed thereon, a lower array substrate with a thin film transistor and attached with the upper array substrate, and a liquid crystal layer formed between the upper and lower substrates and including a plurality of cells; forming a certain gap between the black matrix and the upper array substrate by irradiating laser to a defective cell region among the plurality of cells in the liquid crystal panel; forming a comb-like structure with a certain gap between its teeth between the pigment layer and the upper array substrate by irradiating laser to the defective cell region; processing the black matrix by irradiating laser to the defective cell region to generate black matrix particles; and dispersing the black matrix particles between the pigment layer and the upper array substrate, by irradiating laser to the defective cell regio
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: January 11, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Eun-Sub Lim, Chang-Seok Geum
  • Publication number: 20100309401
    Abstract: A liquid crystal display device includes a plurality of pixels arranged near intersections between signal lines and scan lines in a matrix to form a display area. The scan lines and signal lines extend in a row and a column directions of the pixels in the display area. A first conductive layer is arranged on an insulating substrate. A second conductive layer is arranged on the first conductive layer through an insulating layer. The second conductive layer is electrically connected to the signal line. The first conductive layer includes an opposite region opposite to the second conductive layer and is arranged to surround the display area. The opposite region includes a cut out portion in which a disconnected scan line is repaired by irradiating the cut out portion with laser.
    Type: Application
    Filed: December 30, 2009
    Publication date: December 9, 2010
    Applicant: Toshiba Mobile Display Co., Ltd.
    Inventor: Shin MORITA
  • Patent number: 7847875
    Abstract: An exemplary anti-interference wiring assembly for a liquid crystal display device includes a base substrate (210), gate lines (201) formed at the base substrate, anti-interference wires (230), and data lines (202). The anti-interference wires are provided between the gate lines and the data lines and are insulated from the gate lines and the data lines respectively. The anti-interference wires are configured for carrying signals having a reverse phase compared to signals carried by the corresponding gate lines.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: December 7, 2010
    Assignee: Chimei Innolux Corporation
    Inventor: Shuo-Ting Yan
  • Patent number: 7847914
    Abstract: A thin film transistor (TFT) array panel, a liquid crystal display (LCD), and a method of repairing a TFT array panel with a defective pixel is disclosed. When a white defect occurs such that a pixel is always in a white state, a corresponding pixel electrode is supplied with the predetermined voltage applied to a corresponding storage electrode line so that the pixel becomes permanently dark, which may not be easily detected. The connection between the pixel electrode and the storage electrode line is provided by illuminating a laser beam from a common electrode panel through a contact hole in the TFT array panel to electrically couple the storage electrode and the pixel electrode. Advantageously, a backlight unit or chassis does not need to be separated or disassembled from the LCD when repairing the defect. Furthermore, the color filter stripes and the light blocking member are not damaged, thereby improving the reliability of the repair.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: December 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Wook Kim, Dong-Gyu Kim
  • Publication number: 20100296020
    Abstract: A liquid crystal display uses a pixel division method by which the size of a defect can be reduced much more than conventionally possible, and a defect correcting method for the liquid crystal display. The liquid crystal display is provided with an active matrix array substrate including a plurality of gate lines and a plurality of source lines arranged on a transparent substrate so as to intersect with each other, and a plurality of pixel electrodes arranged in a matrix, each pixel electrode including an assembly of a plurality of sub-pixel electrodes, separate TFTs respectively connected to the sub-pixel electrodes in the vicinity of an intersection portion of the gate line and the source line, the TFTs being driven by the common gate line and the common source line, and at least one opening portion being formed in a lower-layer side line placed in a lower layer at the intersection portion.
    Type: Application
    Filed: July 30, 2010
    Publication date: November 25, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoki NODA, Toshihide TSUBATA, Masanori TAKEUCHI, Kenji ENDA
  • Patent number: 7839395
    Abstract: A flat panel display device may improve picture quality by compensating a panel defect by use of a circuit and a picture quality controlling method. A flat panel display device includes a display panel. A memory stores a location information and a compensation value for a panel defect location on the display panel. A first converter calculates a brightness and color difference signals from red, green, blue video signals to be displayed in the display panel. The first converter expands the number of data bits of the brightness signal to generate the expanded brightness signal. A compensating part generates a compensated brightness signal by increasing or decreasing the expanded brightness signal of the video signal to be displayed in the panel defect location. A second converter calculates the red, green, blue signals from the color difference signal and the compensated brightness signal, and generates the compensated video signal by reducing the number of bits of the calculated red, green, blue signals.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: November 23, 2010
    Assignee: LG. Display Co., Ltd.
    Inventors: In Jae Chung, Chul Sang Jang, Young Woo Choi, Jong Hee Hwang
  • Patent number: 7829895
    Abstract: The pixel structure and the repairing method of the TFT array substrate are provided. The pixel has a semiconductor electrode which is partially overlapped with a floating metal located in the first conductive layer. Both the data line and the drain electrode have protruded regions partially overlapped with the semiconductor electrode and the floating metal. Once the pixel is found to be a white defect, a laser beam is used to irradiate the protruded region of the data line to electrically connect the data line and the floating metal and so as to form a diode structure having the rectified effect. Consequently, after the laser repair, the pixel defect will display as the non-flicked white point and black point in the white-picture inspection and the black-picture inspection respectively.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: November 9, 2010
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Yuan-Hsin Tsou
  • Patent number: 7821588
    Abstract: A thin film transistor substrate includes a substrate, first and second pad sections, a signal wiring and a pixel array. The first pad section includes first and second lines. The first pad section receives a driving signal through at least one of the first and second lines. The second pad section includes a third line extending from the first line and a fourth line extending from the second line. The second pad section receives the driving signal through at least one of the third and fourth lines. The signal wiring in a display area is electrically connected to at least one of the third and fourth lines to receive the driving signal from the second pad section. The pixel array receives the driving signal from the signal wiring.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Woong Chang, Jeong-Il Kim, Dong-Gyu Kim, Yeong-Keun Kwon
  • Publication number: 20100265424
    Abstract: A display panel having a repair structure utilizes floating repair lines integrated into the display panel. Each of the floating repair lines bridges across each of any two adjacent pixels so as to be used for the repair of open lines on scan lines, data lines and common lines in the display panel as required. The display panel of the present invention having a repair structure integrates each of the floating repair lines between each of any two adjacent pixels so as to form new substitutional signal transmission routes of various types of open lines. The substitutional signal transmission route is able to reduce the resistive-capacitive delay of the repaired display panel and the impedance of repaired lines, and avoid signal decay and distortion.
    Type: Application
    Filed: August 19, 2009
    Publication date: October 21, 2010
    Inventors: Chuei-Lin Chiu, Chi-Chao Liu