Patents Assigned to Quanta Display Inc.
  • Publication number: 20060087608
    Abstract: A multi-domain vertical alignment liquid crystal display device comprises a first substrate having a plurality of protrusions and a first electrode; a second substrate having a plurality of pixel electrodes, a plurality of first slits and a plurality of second slits; and a liquid crystal layer interposed between the first substrate and the second substrate. The first electrode is disposed on the surface of the first substrate. The protrusions are disposed on part of the surface of the first electrode. The pixel electrodes are disposed on the surface of the second substrate. The first slits are disposed among the pixel electrodes without intersecting the projections of the protrusions on the second substrate. The second slits are disposed on the edge of the first slits, extending in a direction to intersect the projections of the protrusions on the second substrate.
    Type: Application
    Filed: October 19, 2005
    Publication date: April 27, 2006
    Applicant: Quanta Display Inc.
    Inventor: Seok-Lyul (Daniel) Lee
  • Publication number: 20060087607
    Abstract: A multi-domain vertical alignment liquid crystal display device is disclosed, comprising a first polarizer having a polarizer axis; a second polarizer having a polarizer axis which intersects the polarizer axis of the first polarizer; a first substrate having a plurality of protrusions forming an angle in the range of 0 degree and 10 degrees or 80 degrees and 90 degrees with respect to the polarizer axis of the first polarizer and the polarizer axis of the second polarizer; a second substrate having a plurality of pixel electrodes; and a liquid crystal layer filled between the first substrate and the second substrate. As such, the present invention is capable of reducing light-leakage generated around the protrusions in pixel electrodes and improving the image quality of the liquid crystal display devices.
    Type: Application
    Filed: September 16, 2005
    Publication date: April 27, 2006
    Applicant: Quanta Display Inc.
    Inventor: Daniel Lee
  • Patent number: 7011443
    Abstract: A backlight module with side fixing frames and assembly methods thereof are provided. The backlight module has a stack assembly including a supporting frame, a reflecting plate and a light guiding plate. At least one optical film is placed on the stack assembly, and at least one lamp assembly is accommodated at each side of the light guiding plate. At least one side fixing frame is disposed at the side of the stack assembly where the lamp assembly is accommodated. The side fixing frame is provided with a groove for containing the lamp assembly and fastening the stack assembly. The side fixing frame fastens the stack assembly and in combination with the optical film forms the backlight assembly. The backlight module is simpler, stronger, and more easily assembled. The manufacturing cost is also reduced.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 14, 2006
    Assignee: Quanta Display Inc.
    Inventor: Jinzu Chen
  • Patent number: 7005331
    Abstract: A method for manufacturing a thin film transistor array substrate is disclosed. A first metal layer, a gate insulating layer, a semiconductor layer, an ohmic contact layer and a second metal layer are sequentially formed over a substrate, and a first patterning process is carried out to define a source/drain electrodes area, a scan line area, a data line area, a terminal contact area and a pixel area. An interlayer insulating layer is formed, and a second patterning process is implemented to form a source/drain contact hole, a scan line contact hole and a terminal contact hole. A transparent conductive layer, a third metal layer and a passivation layer are sequentially formed over the substrate to achieve electrical contacts among above-mentioned contact holes, and a third patterning process is then implemented to form a thin film transistor, a scan line, a data line, a terminal contact and a pixel electrode.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: February 28, 2006
    Assignee: Quanta Display Inc.
    Inventor: Hung-De Chen
  • Patent number: 6999135
    Abstract: A pixel structure and a fabricating method thereof are described. The method comprises forming a conductive layer, a data line and a source/drain at the same time. The conductive layer has a coupling portion and a connecting portion. The coupling portion is used as a top electrode of a pixel storage capacitor, and the connecting portion connects the coupling portion and the drain. Thereafter, a contact window is defined on the connecting portion, and a pixel electrode formed subsequently can be electrically connected to the connecting portion through the contact window. Thus, the pixel electrode, the conductive layer (includes the coupling portion) and the drain are electrically connected each other. Since the contact window is not formed above the pixel storage capacitor, the leakage of the pixel storage capacitor will not occur when the etching process of the contact window etches away the gate insulating layer.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: February 14, 2006
    Assignees: Quanta Display Inc., Sharp Corporation
    Inventors: Chih-Hung Chiang, Daisuke Nishino
  • Publication number: 20060028604
    Abstract: The present invention discloses a liquid crystal display device, comprising a pair of upper and lower substrates and a liquid crystal layer interposed between the substrates. A plurality of thin film transistors, video signal lines, scan signal lines, common lines, pixel electrodes and counter electrodes are formed over one substrate surface, where the pixel electrodes and the counter electrodes are alternately arranged and their starting points and end points are positioned on one side of a pixel region defined by the video signal lines and the scan signal lines. A transparent auxiliary electrode is formed on the other substrate surface, having a voltage as that of the counter electrodes. A liquid crystal display device so constructed has not only electric fields generated in a plane partly parallel with the substrate but also electric fields generated in a plane substantially perpendicular to the substrate. The transmittance of the substrates of a component is improved.
    Type: Application
    Filed: July 6, 2005
    Publication date: February 9, 2006
    Applicant: Quanta Display Inc.
    Inventor: Chen-Yu Liu
  • Publication number: 20050276680
    Abstract: The present invention relates to a substrate-transporting device, including a base, a substrate carrier unit and a shaft unit mounted between the base and the substrate carrier unit. The shaft unit has a supporting shaft and a shaft base to support and control rotation of the substrate carrier unit. The substrate carrier unit includes a bottom carrier seat connected to the supporting shaft, a plurality of first supporting components mounted on a surface of the bottom carrier seat, a top carrier seat having a plurality of vacuum suction nozzles and a plurality of second supporting components, and at least a retractable component sandwiched between the top carrier seat and the bottom carrier seat. The top carrier seat is used to affix and detect the substrate. The retractable component is capable of adjusting the distance between the top carrier seat and the bottom carrier seat.
    Type: Application
    Filed: August 10, 2004
    Publication date: December 15, 2005
    Applicant: Quanta Display Inc.
    Inventors: Ching Chen, Tai Lee
  • Publication number: 20050248939
    Abstract: The present invention relates to a lens-arrayed backlight module, consisting of a housing, a plurality of lamps, and a plurality of lens plates. The lamps are disposed in parallel between the housing and the lens plates to provide illuminating rays. The lens plates correspond to the lamps respectively, each of which being mounted at the center axis of the corresponding lens plate so that the illuminating rays provided by the lamps diffuse through the lens plates. The present invention also provides a liquid crystal display device using the lens-arrayed backlight module.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 10, 2005
    Applicant: Quanta Display Inc.
    Inventors: Szu-Han Li, Yi-Chen Kuo, Hui-Ju Hsu, Chun-Chung Hsiao, Chun-Chien Chu
  • Publication number: 20050244261
    Abstract: An apparatus for overturning and positioning a cassette is disclosed in the present invention so as to overturn a cassette and position the cassette after overturn. The apparatus for overturning and positioning a cassette comprises a overturning unit mounted on one side of the cassette to overturn the cassette, and at least one movable positioning unit including a base, a positioning member and a rolling member, the movable positioning unit being mounted on one side of the cassette being overturned. The positioning member and the rolling member are mounted on the base. The rolling member projects between the positioning member and the cassette so as to position the overturned cassette in a vertical direction while the positioning member positions the overturned cassette in a horizontal direction.
    Type: Application
    Filed: April 25, 2005
    Publication date: November 3, 2005
    Applicant: Quanta Display Inc.
    Inventor: Kuo-Feng Ting
  • Publication number: 20050243230
    Abstract: A method for manufacturing a panel of a thin film transistor liquid crystal display device with three mask processes is disclosed. The method includes following steps: forming a transparent conductive layer, a first insulating layer, and a second metal layer on a transparent substrate in sequence; forming a source area, a drain area, a transparent electrode area, and data signal lines through a halftone photolithography and an etching; forming a semiconducting layer and a second insulating layer on the substrate in sequence; forming a semiconducting channel area in a thin film transistor area and contacts on the source area, the drain area, and the data signal lines through a photolithography and an etching; forming a third metal layer and a third insulating layer on the substrate in sequence; forming scanning signal lines and gate lines through a photolithography and an etching.
    Type: Application
    Filed: August 2, 2004
    Publication date: November 3, 2005
    Applicant: Quanta Display Inc.
    Inventor: Hung-De Chen
  • Patent number: 6956631
    Abstract: The present invention relates to a liquid crystal display device, which comprises a top polarizer and a lower polarizer, a liquid crystal cell, and a back light assemble, the device is characterized in that the lower polarizer is subjected to an anti-glaring treatment while the top polarizer is not. In the liquid crystal display device (LCD) according to the present invention, since the top polarizer is not subjected to the anti-glaring treatment, the prepared device exhibits a vision property similar to that of cathode ray tube (CRT) display device without brownish nor glittering problems associated with conventional LCD in which a top polarizer is subjected to anti-glaring treatment.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: October 18, 2005
    Assignee: Quanta Display Inc.
    Inventors: Pei-Hsun Wu, Ying-Che Huang, Yu-Han Pan
  • Publication number: 20050212986
    Abstract: A four-mask process and a three-mask process proposal are constructed for a TN-type liquid crystal display device and an IPS-type liquid crystal device in which the formation of a passivation insulating layer is not required by streamlining the formation of a scan line and a pseudo-pixel element, both comprising a laminate made of a transparent conductive layer and a metal layer, at the same time and the formation of the transparent conductive pixel electrode by removing the metal layer on the pseudo-pixel electrode at the time of the formation of the opening in the gate insulating layer, by streamlining the treatment of the formation process of the contact and the formation process of the protective insulating layer using one photomask due to the introduction of half-tone exposure technology, and the formation of source-drain wires for etch-stop type insulating gate-type transistor using a photosensitive organic insulating layer and leaving the photosensitive organic insulating layer unchanged on source-drai
    Type: Application
    Filed: October 14, 2004
    Publication date: September 29, 2005
    Applicant: Quanta Display Inc.
    Inventor: Kiyohiro Kawasaki
  • Patent number: 6940480
    Abstract: A pixel structure on a substrate is provided. The pixel structure includes a scan line, a gate dielectric layer, a data line, a passivation layer, a transparent pixel electrode and a double drain thin film transistor (double drain TFT). The scan line is positioned over the substrate and the gate dielectric layer is positioned over the substrate covering the scan line. The data line is positioned over the gate dielectric layer. The data line extends in a direction different from the scan line. The passivation layer is positioned over the gate dielectric layer covering the data line. The transparent pixel electrode is positioned over the passivation. The double drain TFT is positioned over the substrate in the middle of the pixel structure. The double drain TFT has a gate, a channel layer, a source and two drains. The source and the data line are electrically connected. The two drains are electrically connected to transparent pixel electrode.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: September 6, 2005
    Assignee: Quanta Display Inc.
    Inventor: An-Hsu Lu
  • Patent number: 6940095
    Abstract: A method of fabricating a thin film transistor array is provided. A first patterned conductive layer that distributes over an area range exceeding the designated display region is formed over a substrate. A first dielectric layer is formed over the substrate, wherein the first dielectric layer has the thickness getting smaller toward the edge, so that the first patterned conductive layer outside the designated display region is exposed. A second patterned conductive layer is formed over the first dielectric layer. The second patterned conductive layer and the exposed first patterned conductive layer are electrically connected. A second dielectric layer having a plurality of contact openings therein is formed over the substrate. A plurality of pixel electrodes is formed over the second dielectric layer such that the pixel electrode and the second patterned conductive layer are electrically connected through the contact openings. Finally, various layers outside the designated display regions are removed.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: September 6, 2005
    Assignee: Quanta Display Inc.
    Inventor: Meng-Yi Hung
  • Publication number: 20050185126
    Abstract: Four-mask and three-mask process for TN-type liquid crystal display made with combination of the formation process of the signal line and the formation process of the pixel electrode by forming a signal line of a laminate of a transparent conductive layer and a low-resistance metal layer and a pseudo-pixel electrode, removing a low resistance metal layer on the pseudo-pixel electrode during formation of an opening in a passivation insulating layer to obtain a pixel electrode having a transparent conductive layer. Contact formation process by removing the gate insulating layer during formation of the semiconductor layer, and the formation process of the contact and the formation process of the semiconductor layer, or the formation process of the scan line and the formation process of the contact or the formation process of the scan line and the formation process of the semiconductor layer by introducing half-tone exposure technology.
    Type: Application
    Filed: November 24, 2004
    Publication date: August 25, 2005
    Applicant: Quanta Display Inc.
    Inventor: Kiyohiro Kawasaki
  • Publication number: 20050169010
    Abstract: This invention is related to a backlight module for a liquid crystal display device and, more particularly, to a backlight module having a frame with an impact damping design. The impact damping design can damp impact or absorb impact energy, and thereby protect the important components of the backlight module, such as the lamp or the light guide plate. The backlight module includes a light guide plate that has at least one protrusion located at its periphery, and a frame that has at least one indentation part located at its inner side edge. The indentation part engages with the protrusion to fix the light guide plate, and has at least one opening nearby to damp an impact to the indentation part.
    Type: Application
    Filed: May 19, 2004
    Publication date: August 4, 2005
    Applicant: Quanta Display Inc.
    Inventor: Deng-Kuen Shiau
  • Publication number: 20050168667
    Abstract: In the 5-mask and 4-mask processes, during the formation of contacts, breakings in the pixel electrodes and unstable contacts that follow tend to occur. Using source-drain wires consisting of a lamination layer of a heat resistant metal layer and an aluminum layer, the undercuts of the passivation insulating layer formed by removing an aluminum layer in the openings on drain electrodes is resolved by adding manufacturing processes to enlarge the said openings.
    Type: Application
    Filed: January 28, 2005
    Publication date: August 4, 2005
    Applicant: Quanta Display Inc.
    Inventors: Kiyohiro Kawasaki, Ching-Lung Chiang
  • Publication number: 20050168666
    Abstract: In the conventional manufacture method that has reduced the number of manufacture processes by forming semiconductor layers and source-drain wires for a channel-etch type insulating gate transistor in a single photo etching process using halftone exposure technology, the channel length increases when the photosensitive resin pattern used at above formation process of source-drain patterning is reduced. Hence the manufacture tolerance (margin) is small, and the yield decreases when the distance between the source wire and drain wire is shortened.
    Type: Application
    Filed: October 14, 2004
    Publication date: August 4, 2005
    Applicant: Quanta Display Inc.
    Inventor: Kiyohiro Kawasaki
  • Publication number: 20050157236
    Abstract: When the channel length is shortened in a conventional manufacturing method with a reduced numbers of processes, the manufacturing margin is decreased, causing a lower yield. A four-mask process and a three-mask process proposal are constructed for a TN type liquid crystal display device made by combining a novel technology for streamlining the signal wire formation process and pixel electrode formation process by adopting a half-tone exposure technology, a novel technology for streamlining the electrode terminal protective layer formation process by adopting a half-tone exposure technology in a publicly known source and drain wiring anodization process, and a novel technology for streamlining the scan line formation process and the semiconductor layer formation process, the scan line formation process and the etch stop layer formation process, and the scan line formation process and the contact formation process.
    Type: Application
    Filed: September 28, 2004
    Publication date: July 21, 2005
    Applicant: Quanta Display Inc.
    Inventor: Kiyohiro Kawasaki
  • Publication number: 20050157520
    Abstract: A housing for a backlight module is disclosed. The housing has a bottom casing and a side frame for holding a lighting unit, a light guide plate having a protrusion, and optionally a plurality of optical sheets. In particular, an indentation part is formed on the side frame for holding the protrusion, and a slit with unequal width is formed adjacent to the indentation part. A backlight module using the above-mentioned housing is also disclosed therewith.
    Type: Application
    Filed: May 10, 2004
    Publication date: July 21, 2005
    Applicant: Quanta Display Inc.
    Inventors: Yung-Ping Chuang, Keng-Ju Liu, Chun-Chi Hsu, Bing-Han Tsai, Mao-Wei Lin, Szu-Han Li, Li-Hwang Lu, Deng-Kuen Shiau, Chun-Ming Chen, Chun-Chien Chu