Source: http://www.google.com/patents/US6755724?dq=6,163,776
Timestamp: 2013-12-12 13:17:09
Document Index: 504812987

Matched Legal Cases: ['art 13', 'art 14', 'art 13', 'art 15', 'art 13', 'arts 14']

Patent US6755724 - Device for grinding liquid crystal display panel - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Advanced Patent Search | Sign inAdvanced Patent SearchPatentsDisclosed is a device for grinding a liquid crystal display panel improving the efficiency of using equipment by independently operating first and second grinding units for grinding the unit liquid crystal display panel. The present invention includes a first grinding unit grinding edges of short or...http://www.google.com/patents/US6755724?utm_source=gb-gplus-sharePatent US6755724 - Device for grinding liquid crystal display panelPublication numberUS6755724 B2Publication typeGrantApplication numberUS 10/327,085Publication dateJun 29, 2004Filing dateDec 24, 2002Priority dateMar 21, 2002Fee statusPaidAlso published asCN1320389C, CN1447173A, US7179155, US20030181130, US20040224609Publication number10327085, 327085, US 6755724 B2, US 6755724B2, US-B2-6755724, US6755724 B2, US6755724B2InventorsSang-Sun Shin, Jong-Go LimOriginal AssigneeLg.Philips Lcd Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (104), Referenced by (6), Classifications (18), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetDevice for grinding liquid crystal display panelUS 6755724 B2Abstract Disclosed is a device for grinding a liquid crystal display panel improving the efficiency of using equipment by independently operating first and second grinding units for grinding the unit liquid crystal display panel. The present invention includes a first grinding unit grinding edges of short or long sides of the unit liquid crystal display panel in a normal mode and a second grinding unit grinding the edges of the short or long sides of the unit liquid crystal display panel that are not ground by the first grinding unit in the normal mode or grinding the edges of the long and short sides of the unit liquid crystal display panel in an emergency mode.
What is claimed is: 1. A device for grinding a liquid crystal display panel, comprising:
a first grinding unit including grinding wheels of the first grinding unit for grinding edges of one of short and long sides of the unit liquid crystal display panel in a first mode; and a second grinding unit, the second grinding unit including first grinding wheels of the second grinding unit for grinding the edges of the other of the short and long sides of the unit liquid crystal display panel in the first mode and including second grinding wheels of the second grinding unit being capable of grinding the edges of the one of the long and short sides of the unit liquid crystal display panel in a second mode; wherein in the first mode, the first grinding unit and the second grinding unit are functional and, in the second mode, only the second grinding unit is functional. 2. The device of claim 1, further comprising a loading unit for transferring the unit liquid crystal display panel to the first grinding unit in the first mode, the loading unit for transferring the unit liquid crystal display panel to one of the first and second grinding unit in the second mode.
3. The device of claim 1, further comprising a turning unit for turning the unit liquid crystal display panel by about 90� wherein the edges of the long or short sides are ground by the first grinding unit in the first mode.
a first grinding unit having a first grinding wheel capable of grinding one of long and short sides of a unit liquid crystal display panel and a second grinding wheel capable of grinding the other of long and short sides of the unit liquid crystal display panel. 6. The device of claim 5, wherein the first grinding unit further includes a first grinding table.
a first grinding unit having a first pair of grinding wheels capable of grinding one of short and long sides of the unit liquid crystal display panel and a second pair of grinding wheels capable of grinding the other of the short and long sides of the unit liquid crystal display panel; and a second grinding unit having at least a third pair of grinding wheels for grinding one of the short and long sides of the unit liquid crystal display panel. 12. The device for grinding a liquid crystal display panel of claim 11, wherein the second grinding unit includes a fourth pair of grinding wheels for grinding the other of the short and long sides of the unit liquid crystal display panel.
14. The device of claim 11, further comprising a turning unit between the first grinding unit and the second grinding unit for turning the unit liquid crystal display panel by about 90�.
grinding first opposing edges of the liquid crystal display panel in a first grinding unit; grinding second opposing edges of the liquid crystal display panel in a second grinding unit; and grinding first and second edges of the liquid crystal display panel in the first grinding unit if the second grinding unit is not functional. 17. A method for grinding edges of a liquid crystal display panel, comprising:
grinding one of long and short edges of the liquid crystal display panel in a first grinding unit; and grinding the other of long and short edges of the liquid crystal display panel in the first grinding unit.
Referring to FIG. 2, a unit liquid crystal display panel 10 includes an image display part 13 having liquid crystal cells arranged in a matrix form, a gate pad part 14 connecting gate lines GL1�GLm of the image display part 13 to a gate driver integrated circuit(not shown in the drawing) for supplying gate signals, and a data pad part 15 connecting data lines DL1�DLn of the image display part 13 to a data driver integrated circuit(not shown in the drawing) for supplying image information. In this case, the gate and data pad parts 14 and 15 are formed on edge areas of a thin film transistor array substrate 1 having long sides and short sides protruding longer than those of a color filter substrate 2.
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availableJPS63311233A Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7018272 *Jul 29, 2003Mar 28, 2006Corning IncorporatedPressure feed grinding of AMLCD substrate edgesUS7101268 *Jun 28, 2002Sep 5, 2006Lg.Philips Lcd Co., Ltd.Grinding table for liquid crystal display panel and grinder apparatus using the sameUS7131893Jan 5, 2006Nov 7, 2006Lg.Philips Lcd Co., Ltd.Method for grinding liquid crystal display panelUS7207866Jan 17, 2006Apr 24, 2007Corning IncorporatedPressure feed grinding of AMLCD substrate edgesUS8047898 *Dec 28, 2005Nov 1, 2011Lg Display Co., Ltd.Grinder wheel for liquid crystal display device and method of fabricating liquid crystal display device using the sameUS8178878Jun 8, 2009May 15, 2012Chimei Innolux CorporationMother thin film transistor array substrate and thin film transistor array substrate fabricated therefrom* Cited by examinerClassifications U.S. Classification451/64, 451/41, 451/261, 451/262, 451/28, 451/388, 451/190, 451/178, 451/194, 451/44, 451/364International ClassificationB24B7/22, B24B9/00, G02F1/13, B24B9/10, G02F1/1333Cooperative ClassificationB24B9/102European ClassificationB24B9/10BLegal EventsDateCodeEventDescriptionSep 22, 2011FPAYFee paymentYear of fee payment: 8Oct 27, 2008ASAssignmentOwner name: LG DISPLAY CO., LTD., KOREA, REPUBLIC OFFree format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021763/0212Effective date: 20080304Sep 24, 2007FPAYFee paymentYear of fee payment: 4Dec 24, 2002ASAssignmentOwner name: LG.PHILIPS LCD CO., LTD., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIN, SANG-SUN;LIM, JONG-GO;REEL/FRAME:013609/0555Effective date: 20021224Owner name: LG.PHILIPS LCD CO., LTD. 20, YOIDO-DONG, YOUNGDUNGFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIN, SANG-SUN /AR;REEL/FRAME:013609/0555RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of 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