Absorber and apparatus for fabricating liquid crystal display panel having the same

{
  "publication_number": "US8714532B2",
  "country": "US",
  "kind": "B2",
  "title": "Absorber and apparatus for fabricating liquid crystal display panel having the same",
  "abstract": "Disclosed are an absorber, in which the positions of absorption pads are automatically adjusted according to sizes of substrates, and an apparatus for fabricating a liquid crystal display panel having the same. The absorber includes an absorption plate gate attached to a robot arm having a transfer hand through a turn unit; and an absorption unit assembly mounted on the lower surface of the absorption plate, and the absorption unit assembly includes a middle absorption unit; a left absorption unit located at the left side of the middle absorption unit; a right absorption unit located at the right side of the middle absorption unit; an absorption support unit to guide moving routes of the absorption units and fix the absorption units to the absorption plate; and absorption pads respectively formed on the absorption units such that the positions of the absorption pads are adjusted according to sizes of substrates to allow the absorption pads to absorb the substrates.",
  "claims": [
    "1. An absorber comprising: an absorption plate attached to a robot arm having a transfer hand through a turn unit; and an absorption unit assembly mounted on the lower surface of the absorption plate, wherein the absorption unit assembly includes: a middle absorption unit; a left absorption unit located at the left side of the middle absorption unit; a right absorption unit located at the right side of the middle absorption unit; an absorption support unit to guide moving routes of the absorption units and fix the absorption units to the absorption plate; and absorption pads respectively included on the absorption units such that the positions of the absorption pads are adjusted according to sizes of substrates to allow the absorption pads to absorb the substrates, wherein each of the absorption units includes: a motor; a timing belt driven according to the rotation of the motor; a ball screw rotated according to the driving of the timing belt; and first and second absorption pad fixing parts, to which the absorption pads are fixed, respectively located at both sides of the ball screw such that the positions of the first and second absorption pad fixing parts are varied according to the rotation of the ball screw.",
    "2. The absorber according to claim 1, wherein the absorption support unit includes: a first LM guide installed on the first absorption pad fixing part of the left absorption unit and the first absorption pad fixing part of the right absorption unit; a second LM guide installed on the second absorption pad fixing part of the left absorption unit and the second absorption pad fixing part of the right absorption unit; a first block installed on the upper surface of the left side of the first LM guide and being movable in the lengthwise direction of the first LM guide; a second block installed on the upper surface of the right side of the first LM guide and being movable in the lengthwise direction of the first LM guide; a third block installed on the upper surface of the left side of the second LM guide and being movable in the lengthwise direction of the second LM guide; a fourth block installed on the upper surface of the right side of the second LM guide and being movable in the lengthwise direction of the second LM guide; a third LM guide installed on the first and third blocks and being perpendicular to the first and second LM guides; and a fourth LM guide installed on the second and fourth blocks and being perpendicular to the first and second LM guides.",
    "3. The absorber according to claim 2, wherein the absorption support unit further includes: a first screw unit connected to the first absorption pad fixing part of the left absorption unit and the first absorption pad fixing part of the right absorption unit, and being parallel with the first and second LM guides; and a second screw unit connected to the second absorption pad fixing part of the left absorption unit and the second absorption pad fixing part of the right absorption unit, and being parallel with the first and second LM guides, wherein the first and second screw units move the absorption pads connected to the first and second absorption pad fixing parts in the lengthwise direction of the first and second LM guides according to the sizes of the substrates.",
    "4. The absorber according to claim 3, wherein the first and second screw units move in the lengthwise direction of the third and fourth LM guides according to the sizes of the substrates by interlocking with the left and right absorption units.",
    "5. The absorber according to claim 3, wherein: the central portion of the first screw unit is connected to the first absorption pad fixing part of the middle absorption unit; and the central portion of the second screw unit is connected to the second absorption pad fixing part of the middle absorption unit.",
    "6. The absorber according to claim 1, wherein the middle absorption unit out of the absorption units further includes: fifth and sixth LM guides installed under the first and second absorption pad fixing parts, and being parallel with the ball screw; and a lower structure located under the fifth and sixth LM guides to fix the fifth and sixth LM guides."
  ],
  "description_excerpt": "This application claims the benefit of Korean Patent Application No. 2008-0128629, filed on Dec. 17, 2008, which is hereby incorporated by reference as if fully set forth herein.\n\n1. Field of the Invention The present invention relates to an absorber to transfer a unit liquid crystal display panel, and more particularly, to an absorber, in which the positions of absorption pads are automatically adjusted according to the size of a liquid crystal display panel, and an apparatus for fabricating a liquid crystal display panel having the same. 2. Discussion of the Related Art In general, a liquid crystal display device has a structure, in which a lower substrate provided with thin film transistors arranged thereon and an upper substrate provided with color filters formed thereon are bonded under the condition that a liquid crystal layer is interposed therebetween. A process for fabricating one liquid crystal display panel by bonding the upper substrate and the lower substrate, as described above, is referred to as a cell process. The cell process includes an aligning step of forming alignment films to align liquid crystal on the lower substrate provided with the thin film transistors arranged thereon and the upper substrate provided with the color filters formed thereon in one direction, a bonding step of bonding the two substrates to maintain a designated cell gap, a sealing step of injecting liquid crystal into a space between the bonded upper and lower substrates, and a cell cutting step of dividing the bonded substrates into unit liquid crystal display panels using equipment called a cutting penetrable scriber (CPS).",
  "cpc": [
    "G02F 1/133351",
    "B65G 2249/045",
    "B65G 49/061",
    "B65G 49/063",
    "B65G 49/067",
    "C03B 33/03",
    "C03B 33/09",
    "G02F 1/1303",
    "H10P 72/3202",
    "H10P 72/3212",
    "H10P 72/3302",
    "H10P 72/7602",
    "H10P 72/78"
  ],
  "ipc": [
    "B23Q 1/25"
  ],
  "assignees": [
    "LIM JONG-GO",
    "LG DISPLAY CO LTD"
  ],
  "inventors": [
    "LIM JONG-GO"
  ],
  "filing_date": "2009-09-17",
  "publication_date": "2014-05-06",
  "grant_date": "2014-05-06",
  "priority_date": "2008-12-17",
  "application_number": "US-56170609-A",
  "family_id": "42241089",
  "citations": [
    "JP2007210079A",
    "KR100456858B1",
    "KR20070071270A",
    "TW565489B",
    "TW587504U",
    "TWI238759B",
    "US2004074366A1",
    "US2004130085A1",
    "US2007153217A1",
    "US2010151764A1",
    "US3801090A",
    "US4768698A",
    "US5820116A",
    "US6796014B2",
    "US7029046B2",
    "US8025277B2",
    "US8136802B2"
  ]
}